v4.19.13 snapshot.
diff --git a/scripts/dtc/.gitignore b/scripts/dtc/.gitignore
new file mode 100644
index 0000000..2e6e60d
--- /dev/null
+++ b/scripts/dtc/.gitignore
@@ -0,0 +1 @@
+dtc
diff --git a/scripts/dtc/Makefile b/scripts/dtc/Makefile
new file mode 100644
index 0000000..1c943e0
--- /dev/null
+++ b/scripts/dtc/Makefile
@@ -0,0 +1,19 @@
+# SPDX-License-Identifier: GPL-2.0
+# scripts/dtc makefile
+
+hostprogs-y := dtc
+always := $(hostprogs-y)
+
+dtc-objs := dtc.o flattree.o fstree.o data.o livetree.o treesource.o \
+ srcpos.o checks.o util.o
+dtc-objs += dtc-lexer.lex.o dtc-parser.tab.o
+
+# Source files need to get at the userspace version of libfdt_env.h to compile
+HOST_EXTRACFLAGS := -I$(src)/libfdt
+
+# Generated files need one more search path to include headers in source tree
+HOSTCFLAGS_dtc-lexer.lex.o := -I$(src)
+HOSTCFLAGS_dtc-parser.tab.o := -I$(src)
+
+# dependencies on generated files need to be listed explicitly
+$(obj)/dtc-lexer.lex.o: $(obj)/dtc-parser.tab.h
diff --git a/scripts/dtc/Makefile.dtc b/scripts/dtc/Makefile.dtc
new file mode 100644
index 0000000..bece49b
--- /dev/null
+++ b/scripts/dtc/Makefile.dtc
@@ -0,0 +1,18 @@
+# Makefile.dtc
+#
+# This is not a complete Makefile of itself. Instead, it is designed to
+# be easily embeddable into other systems of Makefiles.
+#
+DTC_SRCS = \
+ checks.c \
+ data.c \
+ dtc.c \
+ flattree.c \
+ fstree.c \
+ livetree.c \
+ srcpos.c \
+ treesource.c \
+ util.c
+
+DTC_GEN_SRCS = dtc-lexer.lex.c dtc-parser.tab.c
+DTC_OBJS = $(DTC_SRCS:%.c=%.o) $(DTC_GEN_SRCS:%.c=%.o)
diff --git a/scripts/dtc/checks.c b/scripts/dtc/checks.c
new file mode 100644
index 0000000..a2cc103
--- /dev/null
+++ b/scripts/dtc/checks.c
@@ -0,0 +1,1702 @@
+/*
+ * (C) Copyright David Gibson <dwg@au1.ibm.com>, IBM Corporation. 2007.
+ *
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ * USA
+ */
+
+#include "dtc.h"
+
+#ifdef TRACE_CHECKS
+#define TRACE(c, ...) \
+ do { \
+ fprintf(stderr, "=== %s: ", (c)->name); \
+ fprintf(stderr, __VA_ARGS__); \
+ fprintf(stderr, "\n"); \
+ } while (0)
+#else
+#define TRACE(c, fmt, ...) do { } while (0)
+#endif
+
+enum checkstatus {
+ UNCHECKED = 0,
+ PREREQ,
+ PASSED,
+ FAILED,
+};
+
+struct check;
+
+typedef void (*check_fn)(struct check *c, struct dt_info *dti, struct node *node);
+
+struct check {
+ const char *name;
+ check_fn fn;
+ void *data;
+ bool warn, error;
+ enum checkstatus status;
+ bool inprogress;
+ int num_prereqs;
+ struct check **prereq;
+};
+
+#define CHECK_ENTRY(nm_, fn_, d_, w_, e_, ...) \
+ static struct check *nm_##_prereqs[] = { __VA_ARGS__ }; \
+ static struct check nm_ = { \
+ .name = #nm_, \
+ .fn = (fn_), \
+ .data = (d_), \
+ .warn = (w_), \
+ .error = (e_), \
+ .status = UNCHECKED, \
+ .num_prereqs = ARRAY_SIZE(nm_##_prereqs), \
+ .prereq = nm_##_prereqs, \
+ };
+#define WARNING(nm_, fn_, d_, ...) \
+ CHECK_ENTRY(nm_, fn_, d_, true, false, __VA_ARGS__)
+#define ERROR(nm_, fn_, d_, ...) \
+ CHECK_ENTRY(nm_, fn_, d_, false, true, __VA_ARGS__)
+#define CHECK(nm_, fn_, d_, ...) \
+ CHECK_ENTRY(nm_, fn_, d_, false, false, __VA_ARGS__)
+
+static inline void PRINTF(5, 6) check_msg(struct check *c, struct dt_info *dti,
+ struct node *node,
+ struct property *prop,
+ const char *fmt, ...)
+{
+ va_list ap;
+ va_start(ap, fmt);
+
+ if ((c->warn && (quiet < 1))
+ || (c->error && (quiet < 2))) {
+ fprintf(stderr, "%s: %s (%s): ",
+ strcmp(dti->outname, "-") ? dti->outname : "<stdout>",
+ (c->error) ? "ERROR" : "Warning", c->name);
+ if (node) {
+ fprintf(stderr, "%s", node->fullpath);
+ if (prop)
+ fprintf(stderr, ":%s", prop->name);
+ fputs(": ", stderr);
+ }
+ vfprintf(stderr, fmt, ap);
+ fprintf(stderr, "\n");
+ }
+ va_end(ap);
+}
+
+#define FAIL(c, dti, node, ...) \
+ do { \
+ TRACE((c), "\t\tFAILED at %s:%d", __FILE__, __LINE__); \
+ (c)->status = FAILED; \
+ check_msg((c), dti, node, NULL, __VA_ARGS__); \
+ } while (0)
+
+#define FAIL_PROP(c, dti, node, prop, ...) \
+ do { \
+ TRACE((c), "\t\tFAILED at %s:%d", __FILE__, __LINE__); \
+ (c)->status = FAILED; \
+ check_msg((c), dti, node, prop, __VA_ARGS__); \
+ } while (0)
+
+
+static void check_nodes_props(struct check *c, struct dt_info *dti, struct node *node)
+{
+ struct node *child;
+
+ TRACE(c, "%s", node->fullpath);
+ if (c->fn)
+ c->fn(c, dti, node);
+
+ for_each_child(node, child)
+ check_nodes_props(c, dti, child);
+}
+
+static bool run_check(struct check *c, struct dt_info *dti)
+{
+ struct node *dt = dti->dt;
+ bool error = false;
+ int i;
+
+ assert(!c->inprogress);
+
+ if (c->status != UNCHECKED)
+ goto out;
+
+ c->inprogress = true;
+
+ for (i = 0; i < c->num_prereqs; i++) {
+ struct check *prq = c->prereq[i];
+ error = error || run_check(prq, dti);
+ if (prq->status != PASSED) {
+ c->status = PREREQ;
+ check_msg(c, dti, NULL, NULL, "Failed prerequisite '%s'",
+ c->prereq[i]->name);
+ }
+ }
+
+ if (c->status != UNCHECKED)
+ goto out;
+
+ check_nodes_props(c, dti, dt);
+
+ if (c->status == UNCHECKED)
+ c->status = PASSED;
+
+ TRACE(c, "\tCompleted, status %d", c->status);
+
+out:
+ c->inprogress = false;
+ if ((c->status != PASSED) && (c->error))
+ error = true;
+ return error;
+}
+
+/*
+ * Utility check functions
+ */
+
+/* A check which always fails, for testing purposes only */
+static inline void check_always_fail(struct check *c, struct dt_info *dti,
+ struct node *node)
+{
+ FAIL(c, dti, node, "always_fail check");
+}
+CHECK(always_fail, check_always_fail, NULL);
+
+static void check_is_string(struct check *c, struct dt_info *dti,
+ struct node *node)
+{
+ struct property *prop;
+ char *propname = c->data;
+
+ prop = get_property(node, propname);
+ if (!prop)
+ return; /* Not present, assumed ok */
+
+ if (!data_is_one_string(prop->val))
+ FAIL_PROP(c, dti, node, prop, "property is not a string");
+}
+#define WARNING_IF_NOT_STRING(nm, propname) \
+ WARNING(nm, check_is_string, (propname))
+#define ERROR_IF_NOT_STRING(nm, propname) \
+ ERROR(nm, check_is_string, (propname))
+
+static void check_is_string_list(struct check *c, struct dt_info *dti,
+ struct node *node)
+{
+ int rem, l;
+ struct property *prop;
+ char *propname = c->data;
+ char *str;
+
+ prop = get_property(node, propname);
+ if (!prop)
+ return; /* Not present, assumed ok */
+
+ str = prop->val.val;
+ rem = prop->val.len;
+ while (rem > 0) {
+ l = strnlen(str, rem);
+ if (l == rem) {
+ FAIL_PROP(c, dti, node, prop, "property is not a string list");
+ break;
+ }
+ rem -= l + 1;
+ str += l + 1;
+ }
+}
+#define WARNING_IF_NOT_STRING_LIST(nm, propname) \
+ WARNING(nm, check_is_string_list, (propname))
+#define ERROR_IF_NOT_STRING_LIST(nm, propname) \
+ ERROR(nm, check_is_string_list, (propname))
+
+static void check_is_cell(struct check *c, struct dt_info *dti,
+ struct node *node)
+{
+ struct property *prop;
+ char *propname = c->data;
+
+ prop = get_property(node, propname);
+ if (!prop)
+ return; /* Not present, assumed ok */
+
+ if (prop->val.len != sizeof(cell_t))
+ FAIL_PROP(c, dti, node, prop, "property is not a single cell");
+}
+#define WARNING_IF_NOT_CELL(nm, propname) \
+ WARNING(nm, check_is_cell, (propname))
+#define ERROR_IF_NOT_CELL(nm, propname) \
+ ERROR(nm, check_is_cell, (propname))
+
+/*
+ * Structural check functions
+ */
+
+static void check_duplicate_node_names(struct check *c, struct dt_info *dti,
+ struct node *node)
+{
+ struct node *child, *child2;
+
+ for_each_child(node, child)
+ for (child2 = child->next_sibling;
+ child2;
+ child2 = child2->next_sibling)
+ if (streq(child->name, child2->name))
+ FAIL(c, dti, child2, "Duplicate node name");
+}
+ERROR(duplicate_node_names, check_duplicate_node_names, NULL);
+
+static void check_duplicate_property_names(struct check *c, struct dt_info *dti,
+ struct node *node)
+{
+ struct property *prop, *prop2;
+
+ for_each_property(node, prop) {
+ for (prop2 = prop->next; prop2; prop2 = prop2->next) {
+ if (prop2->deleted)
+ continue;
+ if (streq(prop->name, prop2->name))
+ FAIL_PROP(c, dti, node, prop, "Duplicate property name");
+ }
+ }
+}
+ERROR(duplicate_property_names, check_duplicate_property_names, NULL);
+
+#define LOWERCASE "abcdefghijklmnopqrstuvwxyz"
+#define UPPERCASE "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+#define DIGITS "0123456789"
+#define PROPNODECHARS LOWERCASE UPPERCASE DIGITS ",._+*#?-"
+#define PROPNODECHARSSTRICT LOWERCASE UPPERCASE DIGITS ",-"
+
+static void check_node_name_chars(struct check *c, struct dt_info *dti,
+ struct node *node)
+{
+ int n = strspn(node->name, c->data);
+
+ if (n < strlen(node->name))
+ FAIL(c, dti, node, "Bad character '%c' in node name",
+ node->name[n]);
+}
+ERROR(node_name_chars, check_node_name_chars, PROPNODECHARS "@");
+
+static void check_node_name_chars_strict(struct check *c, struct dt_info *dti,
+ struct node *node)
+{
+ int n = strspn(node->name, c->data);
+
+ if (n < node->basenamelen)
+ FAIL(c, dti, node, "Character '%c' not recommended in node name",
+ node->name[n]);
+}
+CHECK(node_name_chars_strict, check_node_name_chars_strict, PROPNODECHARSSTRICT);
+
+static void check_node_name_format(struct check *c, struct dt_info *dti,
+ struct node *node)
+{
+ if (strchr(get_unitname(node), '@'))
+ FAIL(c, dti, node, "multiple '@' characters in node name");
+}
+ERROR(node_name_format, check_node_name_format, NULL, &node_name_chars);
+
+static void check_unit_address_vs_reg(struct check *c, struct dt_info *dti,
+ struct node *node)
+{
+ const char *unitname = get_unitname(node);
+ struct property *prop = get_property(node, "reg");
+
+ if (get_subnode(node, "__overlay__")) {
+ /* HACK: Overlay fragments are a special case */
+ return;
+ }
+
+ if (!prop) {
+ prop = get_property(node, "ranges");
+ if (prop && !prop->val.len)
+ prop = NULL;
+ }
+
+ if (prop) {
+ if (!unitname[0])
+ FAIL(c, dti, node, "node has a reg or ranges property, but no unit name");
+ } else {
+ if (unitname[0])
+ FAIL(c, dti, node, "node has a unit name, but no reg property");
+ }
+}
+WARNING(unit_address_vs_reg, check_unit_address_vs_reg, NULL);
+
+static void check_property_name_chars(struct check *c, struct dt_info *dti,
+ struct node *node)
+{
+ struct property *prop;
+
+ for_each_property(node, prop) {
+ int n = strspn(prop->name, c->data);
+
+ if (n < strlen(prop->name))
+ FAIL_PROP(c, dti, node, prop, "Bad character '%c' in property name",
+ prop->name[n]);
+ }
+}
+ERROR(property_name_chars, check_property_name_chars, PROPNODECHARS);
+
+static void check_property_name_chars_strict(struct check *c,
+ struct dt_info *dti,
+ struct node *node)
+{
+ struct property *prop;
+
+ for_each_property(node, prop) {
+ const char *name = prop->name;
+ int n = strspn(name, c->data);
+
+ if (n == strlen(prop->name))
+ continue;
+
+ /* Certain names are whitelisted */
+ if (streq(name, "device_type"))
+ continue;
+
+ /*
+ * # is only allowed at the beginning of property names not counting
+ * the vendor prefix.
+ */
+ if (name[n] == '#' && ((n == 0) || (name[n-1] == ','))) {
+ name += n + 1;
+ n = strspn(name, c->data);
+ }
+ if (n < strlen(name))
+ FAIL_PROP(c, dti, node, prop, "Character '%c' not recommended in property name",
+ name[n]);
+ }
+}
+CHECK(property_name_chars_strict, check_property_name_chars_strict, PROPNODECHARSSTRICT);
+
+#define DESCLABEL_FMT "%s%s%s%s%s"
+#define DESCLABEL_ARGS(node,prop,mark) \
+ ((mark) ? "value of " : ""), \
+ ((prop) ? "'" : ""), \
+ ((prop) ? (prop)->name : ""), \
+ ((prop) ? "' in " : ""), (node)->fullpath
+
+static void check_duplicate_label(struct check *c, struct dt_info *dti,
+ const char *label, struct node *node,
+ struct property *prop, struct marker *mark)
+{
+ struct node *dt = dti->dt;
+ struct node *othernode = NULL;
+ struct property *otherprop = NULL;
+ struct marker *othermark = NULL;
+
+ othernode = get_node_by_label(dt, label);
+
+ if (!othernode)
+ otherprop = get_property_by_label(dt, label, &othernode);
+ if (!othernode)
+ othermark = get_marker_label(dt, label, &othernode,
+ &otherprop);
+
+ if (!othernode)
+ return;
+
+ if ((othernode != node) || (otherprop != prop) || (othermark != mark))
+ FAIL(c, dti, node, "Duplicate label '%s' on " DESCLABEL_FMT
+ " and " DESCLABEL_FMT,
+ label, DESCLABEL_ARGS(node, prop, mark),
+ DESCLABEL_ARGS(othernode, otherprop, othermark));
+}
+
+static void check_duplicate_label_node(struct check *c, struct dt_info *dti,
+ struct node *node)
+{
+ struct label *l;
+ struct property *prop;
+
+ for_each_label(node->labels, l)
+ check_duplicate_label(c, dti, l->label, node, NULL, NULL);
+
+ for_each_property(node, prop) {
+ struct marker *m = prop->val.markers;
+
+ for_each_label(prop->labels, l)
+ check_duplicate_label(c, dti, l->label, node, prop, NULL);
+
+ for_each_marker_of_type(m, LABEL)
+ check_duplicate_label(c, dti, m->ref, node, prop, m);
+ }
+}
+ERROR(duplicate_label, check_duplicate_label_node, NULL);
+
+static cell_t check_phandle_prop(struct check *c, struct dt_info *dti,
+ struct node *node, const char *propname)
+{
+ struct node *root = dti->dt;
+ struct property *prop;
+ struct marker *m;
+ cell_t phandle;
+
+ prop = get_property(node, propname);
+ if (!prop)
+ return 0;
+
+ if (prop->val.len != sizeof(cell_t)) {
+ FAIL_PROP(c, dti, node, prop, "bad length (%d) %s property",
+ prop->val.len, prop->name);
+ return 0;
+ }
+
+ m = prop->val.markers;
+ for_each_marker_of_type(m, REF_PHANDLE) {
+ assert(m->offset == 0);
+ if (node != get_node_by_ref(root, m->ref))
+ /* "Set this node's phandle equal to some
+ * other node's phandle". That's nonsensical
+ * by construction. */ {
+ FAIL(c, dti, node, "%s is a reference to another node",
+ prop->name);
+ }
+ /* But setting this node's phandle equal to its own
+ * phandle is allowed - that means allocate a unique
+ * phandle for this node, even if it's not otherwise
+ * referenced. The value will be filled in later, so
+ * we treat it as having no phandle data for now. */
+ return 0;
+ }
+
+ phandle = propval_cell(prop);
+
+ if ((phandle == 0) || (phandle == -1)) {
+ FAIL_PROP(c, dti, node, prop, "bad value (0x%x) in %s property",
+ phandle, prop->name);
+ return 0;
+ }
+
+ return phandle;
+}
+
+static void check_explicit_phandles(struct check *c, struct dt_info *dti,
+ struct node *node)
+{
+ struct node *root = dti->dt;
+ struct node *other;
+ cell_t phandle, linux_phandle;
+
+ /* Nothing should have assigned phandles yet */
+ assert(!node->phandle);
+
+ phandle = check_phandle_prop(c, dti, node, "phandle");
+
+ linux_phandle = check_phandle_prop(c, dti, node, "linux,phandle");
+
+ if (!phandle && !linux_phandle)
+ /* No valid phandles; nothing further to check */
+ return;
+
+ if (linux_phandle && phandle && (phandle != linux_phandle))
+ FAIL(c, dti, node, "mismatching 'phandle' and 'linux,phandle'"
+ " properties");
+
+ if (linux_phandle && !phandle)
+ phandle = linux_phandle;
+
+ other = get_node_by_phandle(root, phandle);
+ if (other && (other != node)) {
+ FAIL(c, dti, node, "duplicated phandle 0x%x (seen before at %s)",
+ phandle, other->fullpath);
+ return;
+ }
+
+ node->phandle = phandle;
+}
+ERROR(explicit_phandles, check_explicit_phandles, NULL);
+
+static void check_name_properties(struct check *c, struct dt_info *dti,
+ struct node *node)
+{
+ struct property **pp, *prop = NULL;
+
+ for (pp = &node->proplist; *pp; pp = &((*pp)->next))
+ if (streq((*pp)->name, "name")) {
+ prop = *pp;
+ break;
+ }
+
+ if (!prop)
+ return; /* No name property, that's fine */
+
+ if ((prop->val.len != node->basenamelen+1)
+ || (memcmp(prop->val.val, node->name, node->basenamelen) != 0)) {
+ FAIL(c, dti, node, "\"name\" property is incorrect (\"%s\" instead"
+ " of base node name)", prop->val.val);
+ } else {
+ /* The name property is correct, and therefore redundant.
+ * Delete it */
+ *pp = prop->next;
+ free(prop->name);
+ data_free(prop->val);
+ free(prop);
+ }
+}
+ERROR_IF_NOT_STRING(name_is_string, "name");
+ERROR(name_properties, check_name_properties, NULL, &name_is_string);
+
+/*
+ * Reference fixup functions
+ */
+
+static void fixup_phandle_references(struct check *c, struct dt_info *dti,
+ struct node *node)
+{
+ struct node *dt = dti->dt;
+ struct property *prop;
+
+ for_each_property(node, prop) {
+ struct marker *m = prop->val.markers;
+ struct node *refnode;
+ cell_t phandle;
+
+ for_each_marker_of_type(m, REF_PHANDLE) {
+ assert(m->offset + sizeof(cell_t) <= prop->val.len);
+
+ refnode = get_node_by_ref(dt, m->ref);
+ if (! refnode) {
+ if (!(dti->dtsflags & DTSF_PLUGIN))
+ FAIL(c, dti, node, "Reference to non-existent node or "
+ "label \"%s\"\n", m->ref);
+ else /* mark the entry as unresolved */
+ *((fdt32_t *)(prop->val.val + m->offset)) =
+ cpu_to_fdt32(0xffffffff);
+ continue;
+ }
+
+ phandle = get_node_phandle(dt, refnode);
+ *((fdt32_t *)(prop->val.val + m->offset)) = cpu_to_fdt32(phandle);
+
+ reference_node(refnode);
+ }
+ }
+}
+ERROR(phandle_references, fixup_phandle_references, NULL,
+ &duplicate_node_names, &explicit_phandles);
+
+static void fixup_path_references(struct check *c, struct dt_info *dti,
+ struct node *node)
+{
+ struct node *dt = dti->dt;
+ struct property *prop;
+
+ for_each_property(node, prop) {
+ struct marker *m = prop->val.markers;
+ struct node *refnode;
+ char *path;
+
+ for_each_marker_of_type(m, REF_PATH) {
+ assert(m->offset <= prop->val.len);
+
+ refnode = get_node_by_ref(dt, m->ref);
+ if (!refnode) {
+ FAIL(c, dti, node, "Reference to non-existent node or label \"%s\"\n",
+ m->ref);
+ continue;
+ }
+
+ path = refnode->fullpath;
+ prop->val = data_insert_at_marker(prop->val, m, path,
+ strlen(path) + 1);
+
+ reference_node(refnode);
+ }
+ }
+}
+ERROR(path_references, fixup_path_references, NULL, &duplicate_node_names);
+
+static void fixup_omit_unused_nodes(struct check *c, struct dt_info *dti,
+ struct node *node)
+{
+ if (node->omit_if_unused && !node->is_referenced)
+ delete_node(node);
+}
+ERROR(omit_unused_nodes, fixup_omit_unused_nodes, NULL, &phandle_references, &path_references);
+
+/*
+ * Semantic checks
+ */
+WARNING_IF_NOT_CELL(address_cells_is_cell, "#address-cells");
+WARNING_IF_NOT_CELL(size_cells_is_cell, "#size-cells");
+WARNING_IF_NOT_CELL(interrupt_cells_is_cell, "#interrupt-cells");
+
+WARNING_IF_NOT_STRING(device_type_is_string, "device_type");
+WARNING_IF_NOT_STRING(model_is_string, "model");
+WARNING_IF_NOT_STRING(status_is_string, "status");
+WARNING_IF_NOT_STRING(label_is_string, "label");
+
+WARNING_IF_NOT_STRING_LIST(compatible_is_string_list, "compatible");
+
+static void check_names_is_string_list(struct check *c, struct dt_info *dti,
+ struct node *node)
+{
+ struct property *prop;
+
+ for_each_property(node, prop) {
+ const char *s = strrchr(prop->name, '-');
+ if (!s || !streq(s, "-names"))
+ continue;
+
+ c->data = prop->name;
+ check_is_string_list(c, dti, node);
+ }
+}
+WARNING(names_is_string_list, check_names_is_string_list, NULL);
+
+static void check_alias_paths(struct check *c, struct dt_info *dti,
+ struct node *node)
+{
+ struct property *prop;
+
+ if (!streq(node->name, "aliases"))
+ return;
+
+ for_each_property(node, prop) {
+ if (!prop->val.val || !get_node_by_path(dti->dt, prop->val.val)) {
+ FAIL_PROP(c, dti, node, prop, "aliases property is not a valid node (%s)",
+ prop->val.val);
+ continue;
+ }
+ if (strspn(prop->name, LOWERCASE DIGITS "-") != strlen(prop->name))
+ FAIL(c, dti, node, "aliases property name must include only lowercase and '-'");
+ }
+}
+WARNING(alias_paths, check_alias_paths, NULL);
+
+static void fixup_addr_size_cells(struct check *c, struct dt_info *dti,
+ struct node *node)
+{
+ struct property *prop;
+
+ node->addr_cells = -1;
+ node->size_cells = -1;
+
+ prop = get_property(node, "#address-cells");
+ if (prop)
+ node->addr_cells = propval_cell(prop);
+
+ prop = get_property(node, "#size-cells");
+ if (prop)
+ node->size_cells = propval_cell(prop);
+}
+WARNING(addr_size_cells, fixup_addr_size_cells, NULL,
+ &address_cells_is_cell, &size_cells_is_cell);
+
+#define node_addr_cells(n) \
+ (((n)->addr_cells == -1) ? 2 : (n)->addr_cells)
+#define node_size_cells(n) \
+ (((n)->size_cells == -1) ? 1 : (n)->size_cells)
+
+static void check_reg_format(struct check *c, struct dt_info *dti,
+ struct node *node)
+{
+ struct property *prop;
+ int addr_cells, size_cells, entrylen;
+
+ prop = get_property(node, "reg");
+ if (!prop)
+ return; /* No "reg", that's fine */
+
+ if (!node->parent) {
+ FAIL(c, dti, node, "Root node has a \"reg\" property");
+ return;
+ }
+
+ if (prop->val.len == 0)
+ FAIL_PROP(c, dti, node, prop, "property is empty");
+
+ addr_cells = node_addr_cells(node->parent);
+ size_cells = node_size_cells(node->parent);
+ entrylen = (addr_cells + size_cells) * sizeof(cell_t);
+
+ if (!entrylen || (prop->val.len % entrylen) != 0)
+ FAIL_PROP(c, dti, node, prop, "property has invalid length (%d bytes) "
+ "(#address-cells == %d, #size-cells == %d)",
+ prop->val.len, addr_cells, size_cells);
+}
+WARNING(reg_format, check_reg_format, NULL, &addr_size_cells);
+
+static void check_ranges_format(struct check *c, struct dt_info *dti,
+ struct node *node)
+{
+ struct property *prop;
+ int c_addr_cells, p_addr_cells, c_size_cells, p_size_cells, entrylen;
+
+ prop = get_property(node, "ranges");
+ if (!prop)
+ return;
+
+ if (!node->parent) {
+ FAIL_PROP(c, dti, node, prop, "Root node has a \"ranges\" property");
+ return;
+ }
+
+ p_addr_cells = node_addr_cells(node->parent);
+ p_size_cells = node_size_cells(node->parent);
+ c_addr_cells = node_addr_cells(node);
+ c_size_cells = node_size_cells(node);
+ entrylen = (p_addr_cells + c_addr_cells + c_size_cells) * sizeof(cell_t);
+
+ if (prop->val.len == 0) {
+ if (p_addr_cells != c_addr_cells)
+ FAIL_PROP(c, dti, node, prop, "empty \"ranges\" property but its "
+ "#address-cells (%d) differs from %s (%d)",
+ c_addr_cells, node->parent->fullpath,
+ p_addr_cells);
+ if (p_size_cells != c_size_cells)
+ FAIL_PROP(c, dti, node, prop, "empty \"ranges\" property but its "
+ "#size-cells (%d) differs from %s (%d)",
+ c_size_cells, node->parent->fullpath,
+ p_size_cells);
+ } else if ((prop->val.len % entrylen) != 0) {
+ FAIL_PROP(c, dti, node, prop, "\"ranges\" property has invalid length (%d bytes) "
+ "(parent #address-cells == %d, child #address-cells == %d, "
+ "#size-cells == %d)", prop->val.len,
+ p_addr_cells, c_addr_cells, c_size_cells);
+ }
+}
+WARNING(ranges_format, check_ranges_format, NULL, &addr_size_cells);
+
+static const struct bus_type pci_bus = {
+ .name = "PCI",
+};
+
+static void check_pci_bridge(struct check *c, struct dt_info *dti, struct node *node)
+{
+ struct property *prop;
+ cell_t *cells;
+
+ prop = get_property(node, "device_type");
+ if (!prop || !streq(prop->val.val, "pci"))
+ return;
+
+ node->bus = &pci_bus;
+
+ if (!strprefixeq(node->name, node->basenamelen, "pci") &&
+ !strprefixeq(node->name, node->basenamelen, "pcie"))
+ FAIL(c, dti, node, "node name is not \"pci\" or \"pcie\"");
+
+ prop = get_property(node, "ranges");
+ if (!prop)
+ FAIL(c, dti, node, "missing ranges for PCI bridge (or not a bridge)");
+
+ if (node_addr_cells(node) != 3)
+ FAIL(c, dti, node, "incorrect #address-cells for PCI bridge");
+ if (node_size_cells(node) != 2)
+ FAIL(c, dti, node, "incorrect #size-cells for PCI bridge");
+
+ prop = get_property(node, "bus-range");
+ if (!prop)
+ return;
+
+ if (prop->val.len != (sizeof(cell_t) * 2)) {
+ FAIL_PROP(c, dti, node, prop, "value must be 2 cells");
+ return;
+ }
+ cells = (cell_t *)prop->val.val;
+ if (fdt32_to_cpu(cells[0]) > fdt32_to_cpu(cells[1]))
+ FAIL_PROP(c, dti, node, prop, "1st cell must be less than or equal to 2nd cell");
+ if (fdt32_to_cpu(cells[1]) > 0xff)
+ FAIL_PROP(c, dti, node, prop, "maximum bus number must be less than 256");
+}
+WARNING(pci_bridge, check_pci_bridge, NULL,
+ &device_type_is_string, &addr_size_cells);
+
+static void check_pci_device_bus_num(struct check *c, struct dt_info *dti, struct node *node)
+{
+ struct property *prop;
+ unsigned int bus_num, min_bus, max_bus;
+ cell_t *cells;
+
+ if (!node->parent || (node->parent->bus != &pci_bus))
+ return;
+
+ prop = get_property(node, "reg");
+ if (!prop)
+ return;
+
+ cells = (cell_t *)prop->val.val;
+ bus_num = (fdt32_to_cpu(cells[0]) & 0x00ff0000) >> 16;
+
+ prop = get_property(node->parent, "bus-range");
+ if (!prop) {
+ min_bus = max_bus = 0;
+ } else {
+ cells = (cell_t *)prop->val.val;
+ min_bus = fdt32_to_cpu(cells[0]);
+ max_bus = fdt32_to_cpu(cells[0]);
+ }
+ if ((bus_num < min_bus) || (bus_num > max_bus))
+ FAIL_PROP(c, dti, node, prop, "PCI bus number %d out of range, expected (%d - %d)",
+ bus_num, min_bus, max_bus);
+}
+WARNING(pci_device_bus_num, check_pci_device_bus_num, NULL, ®_format, &pci_bridge);
+
+static void check_pci_device_reg(struct check *c, struct dt_info *dti, struct node *node)
+{
+ struct property *prop;
+ const char *unitname = get_unitname(node);
+ char unit_addr[5];
+ unsigned int dev, func, reg;
+ cell_t *cells;
+
+ if (!node->parent || (node->parent->bus != &pci_bus))
+ return;
+
+ prop = get_property(node, "reg");
+ if (!prop) {
+ FAIL(c, dti, node, "missing PCI reg property");
+ return;
+ }
+
+ cells = (cell_t *)prop->val.val;
+ if (cells[1] || cells[2])
+ FAIL_PROP(c, dti, node, prop, "PCI reg config space address cells 2 and 3 must be 0");
+
+ reg = fdt32_to_cpu(cells[0]);
+ dev = (reg & 0xf800) >> 11;
+ func = (reg & 0x700) >> 8;
+
+ if (reg & 0xff000000)
+ FAIL_PROP(c, dti, node, prop, "PCI reg address is not configuration space");
+ if (reg & 0x000000ff)
+ FAIL_PROP(c, dti, node, prop, "PCI reg config space address register number must be 0");
+
+ if (func == 0) {
+ snprintf(unit_addr, sizeof(unit_addr), "%x", dev);
+ if (streq(unitname, unit_addr))
+ return;
+ }
+
+ snprintf(unit_addr, sizeof(unit_addr), "%x,%x", dev, func);
+ if (streq(unitname, unit_addr))
+ return;
+
+ FAIL(c, dti, node, "PCI unit address format error, expected \"%s\"",
+ unit_addr);
+}
+WARNING(pci_device_reg, check_pci_device_reg, NULL, ®_format, &pci_bridge);
+
+static const struct bus_type simple_bus = {
+ .name = "simple-bus",
+};
+
+static bool node_is_compatible(struct node *node, const char *compat)
+{
+ struct property *prop;
+ const char *str, *end;
+
+ prop = get_property(node, "compatible");
+ if (!prop)
+ return false;
+
+ for (str = prop->val.val, end = str + prop->val.len; str < end;
+ str += strnlen(str, end - str) + 1) {
+ if (strprefixeq(str, end - str, compat))
+ return true;
+ }
+ return false;
+}
+
+static void check_simple_bus_bridge(struct check *c, struct dt_info *dti, struct node *node)
+{
+ if (node_is_compatible(node, "simple-bus"))
+ node->bus = &simple_bus;
+}
+WARNING(simple_bus_bridge, check_simple_bus_bridge, NULL, &addr_size_cells);
+
+static void check_simple_bus_reg(struct check *c, struct dt_info *dti, struct node *node)
+{
+ struct property *prop;
+ const char *unitname = get_unitname(node);
+ char unit_addr[17];
+ unsigned int size;
+ uint64_t reg = 0;
+ cell_t *cells = NULL;
+
+ if (!node->parent || (node->parent->bus != &simple_bus))
+ return;
+
+ prop = get_property(node, "reg");
+ if (prop)
+ cells = (cell_t *)prop->val.val;
+ else {
+ prop = get_property(node, "ranges");
+ if (prop && prop->val.len)
+ /* skip of child address */
+ cells = ((cell_t *)prop->val.val) + node_addr_cells(node);
+ }
+
+ if (!cells) {
+ if (node->parent->parent && !(node->bus == &simple_bus))
+ FAIL(c, dti, node, "missing or empty reg/ranges property");
+ return;
+ }
+
+ size = node_addr_cells(node->parent);
+ while (size--)
+ reg = (reg << 32) | fdt32_to_cpu(*(cells++));
+
+ snprintf(unit_addr, sizeof(unit_addr), "%"PRIx64, reg);
+ if (!streq(unitname, unit_addr))
+ FAIL(c, dti, node, "simple-bus unit address format error, expected \"%s\"",
+ unit_addr);
+}
+WARNING(simple_bus_reg, check_simple_bus_reg, NULL, ®_format, &simple_bus_bridge);
+
+static void check_unit_address_format(struct check *c, struct dt_info *dti,
+ struct node *node)
+{
+ const char *unitname = get_unitname(node);
+
+ if (node->parent && node->parent->bus)
+ return;
+
+ if (!unitname[0])
+ return;
+
+ if (!strncmp(unitname, "0x", 2)) {
+ FAIL(c, dti, node, "unit name should not have leading \"0x\"");
+ /* skip over 0x for next test */
+ unitname += 2;
+ }
+ if (unitname[0] == '0' && isxdigit(unitname[1]))
+ FAIL(c, dti, node, "unit name should not have leading 0s");
+}
+WARNING(unit_address_format, check_unit_address_format, NULL,
+ &node_name_format, &pci_bridge, &simple_bus_bridge);
+
+/*
+ * Style checks
+ */
+static void check_avoid_default_addr_size(struct check *c, struct dt_info *dti,
+ struct node *node)
+{
+ struct property *reg, *ranges;
+
+ if (!node->parent)
+ return; /* Ignore root node */
+
+ reg = get_property(node, "reg");
+ ranges = get_property(node, "ranges");
+
+ if (!reg && !ranges)
+ return;
+
+ if (node->parent->addr_cells == -1)
+ FAIL(c, dti, node, "Relying on default #address-cells value");
+
+ if (node->parent->size_cells == -1)
+ FAIL(c, dti, node, "Relying on default #size-cells value");
+}
+WARNING(avoid_default_addr_size, check_avoid_default_addr_size, NULL,
+ &addr_size_cells);
+
+static void check_avoid_unnecessary_addr_size(struct check *c, struct dt_info *dti,
+ struct node *node)
+{
+ struct property *prop;
+ struct node *child;
+ bool has_reg = false;
+
+ if (!node->parent || node->addr_cells < 0 || node->size_cells < 0)
+ return;
+
+ if (get_property(node, "ranges") || !node->children)
+ return;
+
+ for_each_child(node, child) {
+ prop = get_property(child, "reg");
+ if (prop)
+ has_reg = true;
+ }
+
+ if (!has_reg)
+ FAIL(c, dti, node, "unnecessary #address-cells/#size-cells without \"ranges\" or child \"reg\" property");
+}
+WARNING(avoid_unnecessary_addr_size, check_avoid_unnecessary_addr_size, NULL, &avoid_default_addr_size);
+
+static void check_unique_unit_address(struct check *c, struct dt_info *dti,
+ struct node *node)
+{
+ struct node *childa;
+
+ if (node->addr_cells < 0 || node->size_cells < 0)
+ return;
+
+ if (!node->children)
+ return;
+
+ for_each_child(node, childa) {
+ struct node *childb;
+ const char *addr_a = get_unitname(childa);
+
+ if (!strlen(addr_a))
+ continue;
+
+ for_each_child(node, childb) {
+ const char *addr_b = get_unitname(childb);
+ if (childa == childb)
+ break;
+
+ if (streq(addr_a, addr_b))
+ FAIL(c, dti, childb, "duplicate unit-address (also used in node %s)", childa->fullpath);
+ }
+ }
+}
+WARNING(unique_unit_address, check_unique_unit_address, NULL, &avoid_default_addr_size);
+
+static void check_obsolete_chosen_interrupt_controller(struct check *c,
+ struct dt_info *dti,
+ struct node *node)
+{
+ struct node *dt = dti->dt;
+ struct node *chosen;
+ struct property *prop;
+
+ if (node != dt)
+ return;
+
+
+ chosen = get_node_by_path(dt, "/chosen");
+ if (!chosen)
+ return;
+
+ prop = get_property(chosen, "interrupt-controller");
+ if (prop)
+ FAIL_PROP(c, dti, node, prop,
+ "/chosen has obsolete \"interrupt-controller\" property");
+}
+WARNING(obsolete_chosen_interrupt_controller,
+ check_obsolete_chosen_interrupt_controller, NULL);
+
+static void check_chosen_node_is_root(struct check *c, struct dt_info *dti,
+ struct node *node)
+{
+ if (!streq(node->name, "chosen"))
+ return;
+
+ if (node->parent != dti->dt)
+ FAIL(c, dti, node, "chosen node must be at root node");
+}
+WARNING(chosen_node_is_root, check_chosen_node_is_root, NULL);
+
+static void check_chosen_node_bootargs(struct check *c, struct dt_info *dti,
+ struct node *node)
+{
+ struct property *prop;
+
+ if (!streq(node->name, "chosen"))
+ return;
+
+ prop = get_property(node, "bootargs");
+ if (!prop)
+ return;
+
+ c->data = prop->name;
+ check_is_string(c, dti, node);
+}
+WARNING(chosen_node_bootargs, check_chosen_node_bootargs, NULL);
+
+static void check_chosen_node_stdout_path(struct check *c, struct dt_info *dti,
+ struct node *node)
+{
+ struct property *prop;
+
+ if (!streq(node->name, "chosen"))
+ return;
+
+ prop = get_property(node, "stdout-path");
+ if (!prop) {
+ prop = get_property(node, "linux,stdout-path");
+ if (!prop)
+ return;
+ FAIL_PROP(c, dti, node, prop, "Use 'stdout-path' instead");
+ }
+
+ c->data = prop->name;
+ check_is_string(c, dti, node);
+}
+WARNING(chosen_node_stdout_path, check_chosen_node_stdout_path, NULL);
+
+struct provider {
+ const char *prop_name;
+ const char *cell_name;
+ bool optional;
+};
+
+static void check_property_phandle_args(struct check *c,
+ struct dt_info *dti,
+ struct node *node,
+ struct property *prop,
+ const struct provider *provider)
+{
+ struct node *root = dti->dt;
+ int cell, cellsize = 0;
+
+ if (prop->val.len % sizeof(cell_t)) {
+ FAIL_PROP(c, dti, node, prop,
+ "property size (%d) is invalid, expected multiple of %zu",
+ prop->val.len, sizeof(cell_t));
+ return;
+ }
+
+ for (cell = 0; cell < prop->val.len / sizeof(cell_t); cell += cellsize + 1) {
+ struct node *provider_node;
+ struct property *cellprop;
+ int phandle;
+
+ phandle = propval_cell_n(prop, cell);
+ /*
+ * Some bindings use a cell value 0 or -1 to skip over optional
+ * entries when each index position has a specific definition.
+ */
+ if (phandle == 0 || phandle == -1) {
+ /* Give up if this is an overlay with external references */
+ if (dti->dtsflags & DTSF_PLUGIN)
+ break;
+
+ cellsize = 0;
+ continue;
+ }
+
+ /* If we have markers, verify the current cell is a phandle */
+ if (prop->val.markers) {
+ struct marker *m = prop->val.markers;
+ for_each_marker_of_type(m, REF_PHANDLE) {
+ if (m->offset == (cell * sizeof(cell_t)))
+ break;
+ }
+ if (!m)
+ FAIL_PROP(c, dti, node, prop,
+ "cell %d is not a phandle reference",
+ cell);
+ }
+
+ provider_node = get_node_by_phandle(root, phandle);
+ if (!provider_node) {
+ FAIL_PROP(c, dti, node, prop,
+ "Could not get phandle node for (cell %d)",
+ cell);
+ break;
+ }
+
+ cellprop = get_property(provider_node, provider->cell_name);
+ if (cellprop) {
+ cellsize = propval_cell(cellprop);
+ } else if (provider->optional) {
+ cellsize = 0;
+ } else {
+ FAIL(c, dti, node, "Missing property '%s' in node %s or bad phandle (referred from %s[%d])",
+ provider->cell_name,
+ provider_node->fullpath,
+ prop->name, cell);
+ break;
+ }
+
+ if (prop->val.len < ((cell + cellsize + 1) * sizeof(cell_t))) {
+ FAIL_PROP(c, dti, node, prop,
+ "property size (%d) too small for cell size %d",
+ prop->val.len, cellsize);
+ }
+ }
+}
+
+static void check_provider_cells_property(struct check *c,
+ struct dt_info *dti,
+ struct node *node)
+{
+ struct provider *provider = c->data;
+ struct property *prop;
+
+ prop = get_property(node, provider->prop_name);
+ if (!prop)
+ return;
+
+ check_property_phandle_args(c, dti, node, prop, provider);
+}
+#define WARNING_PROPERTY_PHANDLE_CELLS(nm, propname, cells_name, ...) \
+ static struct provider nm##_provider = { (propname), (cells_name), __VA_ARGS__ }; \
+ WARNING(nm##_property, check_provider_cells_property, &nm##_provider, &phandle_references);
+
+WARNING_PROPERTY_PHANDLE_CELLS(clocks, "clocks", "#clock-cells");
+WARNING_PROPERTY_PHANDLE_CELLS(cooling_device, "cooling-device", "#cooling-cells");
+WARNING_PROPERTY_PHANDLE_CELLS(dmas, "dmas", "#dma-cells");
+WARNING_PROPERTY_PHANDLE_CELLS(hwlocks, "hwlocks", "#hwlock-cells");
+WARNING_PROPERTY_PHANDLE_CELLS(interrupts_extended, "interrupts-extended", "#interrupt-cells");
+WARNING_PROPERTY_PHANDLE_CELLS(io_channels, "io-channels", "#io-channel-cells");
+WARNING_PROPERTY_PHANDLE_CELLS(iommus, "iommus", "#iommu-cells");
+WARNING_PROPERTY_PHANDLE_CELLS(mboxes, "mboxes", "#mbox-cells");
+WARNING_PROPERTY_PHANDLE_CELLS(msi_parent, "msi-parent", "#msi-cells", true);
+WARNING_PROPERTY_PHANDLE_CELLS(mux_controls, "mux-controls", "#mux-control-cells");
+WARNING_PROPERTY_PHANDLE_CELLS(phys, "phys", "#phy-cells");
+WARNING_PROPERTY_PHANDLE_CELLS(power_domains, "power-domains", "#power-domain-cells");
+WARNING_PROPERTY_PHANDLE_CELLS(pwms, "pwms", "#pwm-cells");
+WARNING_PROPERTY_PHANDLE_CELLS(resets, "resets", "#reset-cells");
+WARNING_PROPERTY_PHANDLE_CELLS(sound_dai, "sound-dai", "#sound-dai-cells");
+WARNING_PROPERTY_PHANDLE_CELLS(thermal_sensors, "thermal-sensors", "#thermal-sensor-cells");
+
+static bool prop_is_gpio(struct property *prop)
+{
+ char *str;
+
+ /*
+ * *-gpios and *-gpio can appear in property names,
+ * so skip over any false matches (only one known ATM)
+ */
+ if (strstr(prop->name, "nr-gpio"))
+ return false;
+
+ str = strrchr(prop->name, '-');
+ if (str)
+ str++;
+ else
+ str = prop->name;
+ if (!(streq(str, "gpios") || streq(str, "gpio")))
+ return false;
+
+ return true;
+}
+
+static void check_gpios_property(struct check *c,
+ struct dt_info *dti,
+ struct node *node)
+{
+ struct property *prop;
+
+ /* Skip GPIO hog nodes which have 'gpios' property */
+ if (get_property(node, "gpio-hog"))
+ return;
+
+ for_each_property(node, prop) {
+ struct provider provider;
+
+ if (!prop_is_gpio(prop))
+ continue;
+
+ provider.prop_name = prop->name;
+ provider.cell_name = "#gpio-cells";
+ provider.optional = false;
+ check_property_phandle_args(c, dti, node, prop, &provider);
+ }
+
+}
+WARNING(gpios_property, check_gpios_property, NULL, &phandle_references);
+
+static void check_deprecated_gpio_property(struct check *c,
+ struct dt_info *dti,
+ struct node *node)
+{
+ struct property *prop;
+
+ for_each_property(node, prop) {
+ char *str;
+
+ if (!prop_is_gpio(prop))
+ continue;
+
+ str = strstr(prop->name, "gpio");
+ if (!streq(str, "gpio"))
+ continue;
+
+ FAIL_PROP(c, dti, node, prop,
+ "'[*-]gpio' is deprecated, use '[*-]gpios' instead");
+ }
+
+}
+CHECK(deprecated_gpio_property, check_deprecated_gpio_property, NULL);
+
+static bool node_is_interrupt_provider(struct node *node)
+{
+ struct property *prop;
+
+ prop = get_property(node, "interrupt-controller");
+ if (prop)
+ return true;
+
+ prop = get_property(node, "interrupt-map");
+ if (prop)
+ return true;
+
+ return false;
+}
+static void check_interrupts_property(struct check *c,
+ struct dt_info *dti,
+ struct node *node)
+{
+ struct node *root = dti->dt;
+ struct node *irq_node = NULL, *parent = node;
+ struct property *irq_prop, *prop = NULL;
+ int irq_cells, phandle;
+
+ irq_prop = get_property(node, "interrupts");
+ if (!irq_prop)
+ return;
+
+ if (irq_prop->val.len % sizeof(cell_t))
+ FAIL_PROP(c, dti, node, irq_prop, "size (%d) is invalid, expected multiple of %zu",
+ irq_prop->val.len, sizeof(cell_t));
+
+ while (parent && !prop) {
+ if (parent != node && node_is_interrupt_provider(parent)) {
+ irq_node = parent;
+ break;
+ }
+
+ prop = get_property(parent, "interrupt-parent");
+ if (prop) {
+ phandle = propval_cell(prop);
+ /* Give up if this is an overlay with external references */
+ if ((phandle == 0 || phandle == -1) &&
+ (dti->dtsflags & DTSF_PLUGIN))
+ return;
+
+ irq_node = get_node_by_phandle(root, phandle);
+ if (!irq_node) {
+ FAIL_PROP(c, dti, parent, prop, "Bad phandle");
+ return;
+ }
+ if (!node_is_interrupt_provider(irq_node))
+ FAIL(c, dti, irq_node,
+ "Missing interrupt-controller or interrupt-map property");
+
+ break;
+ }
+
+ parent = parent->parent;
+ }
+
+ if (!irq_node) {
+ FAIL(c, dti, node, "Missing interrupt-parent");
+ return;
+ }
+
+ prop = get_property(irq_node, "#interrupt-cells");
+ if (!prop) {
+ FAIL(c, dti, irq_node, "Missing #interrupt-cells in interrupt-parent");
+ return;
+ }
+
+ irq_cells = propval_cell(prop);
+ if (irq_prop->val.len % (irq_cells * sizeof(cell_t))) {
+ FAIL_PROP(c, dti, node, prop,
+ "size is (%d), expected multiple of %d",
+ irq_prop->val.len, (int)(irq_cells * sizeof(cell_t)));
+ }
+}
+WARNING(interrupts_property, check_interrupts_property, &phandle_references);
+
+static const struct bus_type graph_port_bus = {
+ .name = "graph-port",
+};
+
+static const struct bus_type graph_ports_bus = {
+ .name = "graph-ports",
+};
+
+static void check_graph_nodes(struct check *c, struct dt_info *dti,
+ struct node *node)
+{
+ struct node *child;
+
+ for_each_child(node, child) {
+ if (!(strprefixeq(child->name, child->basenamelen, "endpoint") ||
+ get_property(child, "remote-endpoint")))
+ continue;
+
+ node->bus = &graph_port_bus;
+
+ /* The parent of 'port' nodes can be either 'ports' or a device */
+ if (!node->parent->bus &&
+ (streq(node->parent->name, "ports") || get_property(node, "reg")))
+ node->parent->bus = &graph_ports_bus;
+
+ break;
+ }
+
+}
+WARNING(graph_nodes, check_graph_nodes, NULL);
+
+static void check_graph_child_address(struct check *c, struct dt_info *dti,
+ struct node *node)
+{
+ int cnt = 0;
+ struct node *child;
+
+ if (node->bus != &graph_ports_bus && node->bus != &graph_port_bus)
+ return;
+
+ for_each_child(node, child) {
+ struct property *prop = get_property(child, "reg");
+
+ /* No error if we have any non-zero unit address */
+ if (prop && propval_cell(prop) != 0)
+ return;
+
+ cnt++;
+ }
+
+ if (cnt == 1 && node->addr_cells != -1)
+ FAIL(c, dti, node, "graph node has single child node '%s', #address-cells/#size-cells are not necessary",
+ node->children->name);
+}
+WARNING(graph_child_address, check_graph_child_address, NULL, &graph_nodes);
+
+static void check_graph_reg(struct check *c, struct dt_info *dti,
+ struct node *node)
+{
+ char unit_addr[9];
+ const char *unitname = get_unitname(node);
+ struct property *prop;
+
+ prop = get_property(node, "reg");
+ if (!prop || !unitname)
+ return;
+
+ if (!(prop->val.val && prop->val.len == sizeof(cell_t))) {
+ FAIL(c, dti, node, "graph node malformed 'reg' property");
+ return;
+ }
+
+ snprintf(unit_addr, sizeof(unit_addr), "%x", propval_cell(prop));
+ if (!streq(unitname, unit_addr))
+ FAIL(c, dti, node, "graph node unit address error, expected \"%s\"",
+ unit_addr);
+
+ if (node->parent->addr_cells != 1)
+ FAIL_PROP(c, dti, node, get_property(node, "#address-cells"),
+ "graph node '#address-cells' is %d, must be 1",
+ node->parent->addr_cells);
+ if (node->parent->size_cells != 0)
+ FAIL_PROP(c, dti, node, get_property(node, "#size-cells"),
+ "graph node '#size-cells' is %d, must be 0",
+ node->parent->size_cells);
+}
+
+static void check_graph_port(struct check *c, struct dt_info *dti,
+ struct node *node)
+{
+ if (node->bus != &graph_port_bus)
+ return;
+
+ if (!strprefixeq(node->name, node->basenamelen, "port"))
+ FAIL(c, dti, node, "graph port node name should be 'port'");
+
+ check_graph_reg(c, dti, node);
+}
+WARNING(graph_port, check_graph_port, NULL, &graph_nodes);
+
+static struct node *get_remote_endpoint(struct check *c, struct dt_info *dti,
+ struct node *endpoint)
+{
+ int phandle;
+ struct node *node;
+ struct property *prop;
+
+ prop = get_property(endpoint, "remote-endpoint");
+ if (!prop)
+ return NULL;
+
+ phandle = propval_cell(prop);
+ /* Give up if this is an overlay with external references */
+ if (phandle == 0 || phandle == -1)
+ return NULL;
+
+ node = get_node_by_phandle(dti->dt, phandle);
+ if (!node)
+ FAIL_PROP(c, dti, endpoint, prop, "graph phandle is not valid");
+
+ return node;
+}
+
+static void check_graph_endpoint(struct check *c, struct dt_info *dti,
+ struct node *node)
+{
+ struct node *remote_node;
+
+ if (!node->parent || node->parent->bus != &graph_port_bus)
+ return;
+
+ if (!strprefixeq(node->name, node->basenamelen, "endpoint"))
+ FAIL(c, dti, node, "graph endpont node name should be 'endpoint'");
+
+ check_graph_reg(c, dti, node);
+
+ remote_node = get_remote_endpoint(c, dti, node);
+ if (!remote_node)
+ return;
+
+ if (get_remote_endpoint(c, dti, remote_node) != node)
+ FAIL(c, dti, node, "graph connection to node '%s' is not bidirectional",
+ remote_node->fullpath);
+}
+WARNING(graph_endpoint, check_graph_endpoint, NULL, &graph_nodes);
+
+static struct check *check_table[] = {
+ &duplicate_node_names, &duplicate_property_names,
+ &node_name_chars, &node_name_format, &property_name_chars,
+ &name_is_string, &name_properties,
+
+ &duplicate_label,
+
+ &explicit_phandles,
+ &phandle_references, &path_references,
+ &omit_unused_nodes,
+
+ &address_cells_is_cell, &size_cells_is_cell, &interrupt_cells_is_cell,
+ &device_type_is_string, &model_is_string, &status_is_string,
+ &label_is_string,
+
+ &compatible_is_string_list, &names_is_string_list,
+
+ &property_name_chars_strict,
+ &node_name_chars_strict,
+
+ &addr_size_cells, ®_format, &ranges_format,
+
+ &unit_address_vs_reg,
+ &unit_address_format,
+
+ &pci_bridge,
+ &pci_device_reg,
+ &pci_device_bus_num,
+
+ &simple_bus_bridge,
+ &simple_bus_reg,
+
+ &avoid_default_addr_size,
+ &avoid_unnecessary_addr_size,
+ &unique_unit_address,
+ &obsolete_chosen_interrupt_controller,
+ &chosen_node_is_root, &chosen_node_bootargs, &chosen_node_stdout_path,
+
+ &clocks_property,
+ &cooling_device_property,
+ &dmas_property,
+ &hwlocks_property,
+ &interrupts_extended_property,
+ &io_channels_property,
+ &iommus_property,
+ &mboxes_property,
+ &msi_parent_property,
+ &mux_controls_property,
+ &phys_property,
+ &power_domains_property,
+ &pwms_property,
+ &resets_property,
+ &sound_dai_property,
+ &thermal_sensors_property,
+
+ &deprecated_gpio_property,
+ &gpios_property,
+ &interrupts_property,
+
+ &alias_paths,
+
+ &graph_nodes, &graph_child_address, &graph_port, &graph_endpoint,
+
+ &always_fail,
+};
+
+static void enable_warning_error(struct check *c, bool warn, bool error)
+{
+ int i;
+
+ /* Raising level, also raise it for prereqs */
+ if ((warn && !c->warn) || (error && !c->error))
+ for (i = 0; i < c->num_prereqs; i++)
+ enable_warning_error(c->prereq[i], warn, error);
+
+ c->warn = c->warn || warn;
+ c->error = c->error || error;
+}
+
+static void disable_warning_error(struct check *c, bool warn, bool error)
+{
+ int i;
+
+ /* Lowering level, also lower it for things this is the prereq
+ * for */
+ if ((warn && c->warn) || (error && c->error)) {
+ for (i = 0; i < ARRAY_SIZE(check_table); i++) {
+ struct check *cc = check_table[i];
+ int j;
+
+ for (j = 0; j < cc->num_prereqs; j++)
+ if (cc->prereq[j] == c)
+ disable_warning_error(cc, warn, error);
+ }
+ }
+
+ c->warn = c->warn && !warn;
+ c->error = c->error && !error;
+}
+
+void parse_checks_option(bool warn, bool error, const char *arg)
+{
+ int i;
+ const char *name = arg;
+ bool enable = true;
+
+ if ((strncmp(arg, "no-", 3) == 0)
+ || (strncmp(arg, "no_", 3) == 0)) {
+ name = arg + 3;
+ enable = false;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(check_table); i++) {
+ struct check *c = check_table[i];
+
+ if (streq(c->name, name)) {
+ if (enable)
+ enable_warning_error(c, warn, error);
+ else
+ disable_warning_error(c, warn, error);
+ return;
+ }
+ }
+
+ die("Unrecognized check name \"%s\"\n", name);
+}
+
+void process_checks(bool force, struct dt_info *dti)
+{
+ int i;
+ int error = 0;
+
+ for (i = 0; i < ARRAY_SIZE(check_table); i++) {
+ struct check *c = check_table[i];
+
+ if (c->warn || c->error)
+ error = error || run_check(c, dti);
+ }
+
+ if (error) {
+ if (!force) {
+ fprintf(stderr, "ERROR: Input tree has errors, aborting "
+ "(use -f to force output)\n");
+ exit(2);
+ } else if (quiet < 3) {
+ fprintf(stderr, "Warning: Input tree has errors, "
+ "output forced\n");
+ }
+ }
+}
diff --git a/scripts/dtc/data.c b/scripts/dtc/data.c
new file mode 100644
index 0000000..aa37a16
--- /dev/null
+++ b/scripts/dtc/data.c
@@ -0,0 +1,269 @@
+/*
+ * (C) Copyright David Gibson <dwg@au1.ibm.com>, IBM Corporation. 2005.
+ *
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ * USA
+ */
+
+#include "dtc.h"
+
+void data_free(struct data d)
+{
+ struct marker *m, *nm;
+
+ m = d.markers;
+ while (m) {
+ nm = m->next;
+ free(m->ref);
+ free(m);
+ m = nm;
+ }
+
+ if (d.val)
+ free(d.val);
+}
+
+struct data data_grow_for(struct data d, int xlen)
+{
+ struct data nd;
+ int newsize;
+
+ if (xlen == 0)
+ return d;
+
+ nd = d;
+
+ newsize = xlen;
+
+ while ((d.len + xlen) > newsize)
+ newsize *= 2;
+
+ nd.val = xrealloc(d.val, newsize);
+
+ return nd;
+}
+
+struct data data_copy_mem(const char *mem, int len)
+{
+ struct data d;
+
+ d = data_grow_for(empty_data, len);
+
+ d.len = len;
+ memcpy(d.val, mem, len);
+
+ return d;
+}
+
+struct data data_copy_escape_string(const char *s, int len)
+{
+ int i = 0;
+ struct data d;
+ char *q;
+
+ d = data_grow_for(empty_data, len + 1);
+
+ q = d.val;
+ while (i < len) {
+ char c = s[i++];
+
+ if (c == '\\')
+ c = get_escape_char(s, &i);
+
+ q[d.len++] = c;
+ }
+
+ q[d.len++] = '\0';
+ return d;
+}
+
+struct data data_copy_file(FILE *f, size_t maxlen)
+{
+ struct data d = empty_data;
+
+ while (!feof(f) && (d.len < maxlen)) {
+ size_t chunksize, ret;
+
+ if (maxlen == -1)
+ chunksize = 4096;
+ else
+ chunksize = maxlen - d.len;
+
+ d = data_grow_for(d, chunksize);
+ ret = fread(d.val + d.len, 1, chunksize, f);
+
+ if (ferror(f))
+ die("Error reading file into data: %s", strerror(errno));
+
+ if (d.len + ret < d.len)
+ die("Overflow reading file into data\n");
+
+ d.len += ret;
+ }
+
+ return d;
+}
+
+struct data data_append_data(struct data d, const void *p, int len)
+{
+ d = data_grow_for(d, len);
+ memcpy(d.val + d.len, p, len);
+ d.len += len;
+ return d;
+}
+
+struct data data_insert_at_marker(struct data d, struct marker *m,
+ const void *p, int len)
+{
+ d = data_grow_for(d, len);
+ memmove(d.val + m->offset + len, d.val + m->offset, d.len - m->offset);
+ memcpy(d.val + m->offset, p, len);
+ d.len += len;
+
+ /* Adjust all markers after the one we're inserting at */
+ m = m->next;
+ for_each_marker(m)
+ m->offset += len;
+ return d;
+}
+
+static struct data data_append_markers(struct data d, struct marker *m)
+{
+ struct marker **mp = &d.markers;
+
+ /* Find the end of the markerlist */
+ while (*mp)
+ mp = &((*mp)->next);
+ *mp = m;
+ return d;
+}
+
+struct data data_merge(struct data d1, struct data d2)
+{
+ struct data d;
+ struct marker *m2 = d2.markers;
+
+ d = data_append_markers(data_append_data(d1, d2.val, d2.len), m2);
+
+ /* Adjust for the length of d1 */
+ for_each_marker(m2)
+ m2->offset += d1.len;
+
+ d2.markers = NULL; /* So data_free() doesn't clobber them */
+ data_free(d2);
+
+ return d;
+}
+
+struct data data_append_integer(struct data d, uint64_t value, int bits)
+{
+ uint8_t value_8;
+ fdt16_t value_16;
+ fdt32_t value_32;
+ fdt64_t value_64;
+
+ switch (bits) {
+ case 8:
+ value_8 = value;
+ return data_append_data(d, &value_8, 1);
+
+ case 16:
+ value_16 = cpu_to_fdt16(value);
+ return data_append_data(d, &value_16, 2);
+
+ case 32:
+ value_32 = cpu_to_fdt32(value);
+ return data_append_data(d, &value_32, 4);
+
+ case 64:
+ value_64 = cpu_to_fdt64(value);
+ return data_append_data(d, &value_64, 8);
+
+ default:
+ die("Invalid literal size (%d)\n", bits);
+ }
+}
+
+struct data data_append_re(struct data d, uint64_t address, uint64_t size)
+{
+ struct fdt_reserve_entry re;
+
+ re.address = cpu_to_fdt64(address);
+ re.size = cpu_to_fdt64(size);
+
+ return data_append_data(d, &re, sizeof(re));
+}
+
+struct data data_append_cell(struct data d, cell_t word)
+{
+ return data_append_integer(d, word, sizeof(word) * 8);
+}
+
+struct data data_append_addr(struct data d, uint64_t addr)
+{
+ return data_append_integer(d, addr, sizeof(addr) * 8);
+}
+
+struct data data_append_byte(struct data d, uint8_t byte)
+{
+ return data_append_data(d, &byte, 1);
+}
+
+struct data data_append_zeroes(struct data d, int len)
+{
+ d = data_grow_for(d, len);
+
+ memset(d.val + d.len, 0, len);
+ d.len += len;
+ return d;
+}
+
+struct data data_append_align(struct data d, int align)
+{
+ int newlen = ALIGN(d.len, align);
+ return data_append_zeroes(d, newlen - d.len);
+}
+
+struct data data_add_marker(struct data d, enum markertype type, char *ref)
+{
+ struct marker *m;
+
+ m = xmalloc(sizeof(*m));
+ m->offset = d.len;
+ m->type = type;
+ m->ref = ref;
+ m->next = NULL;
+
+ return data_append_markers(d, m);
+}
+
+bool data_is_one_string(struct data d)
+{
+ int i;
+ int len = d.len;
+
+ if (len == 0)
+ return false;
+
+ for (i = 0; i < len-1; i++)
+ if (d.val[i] == '\0')
+ return false;
+
+ if (d.val[len-1] != '\0')
+ return false;
+
+ return true;
+}
diff --git a/scripts/dtc/dt_to_config b/scripts/dtc/dt_to_config
new file mode 100755
index 0000000..5dfd1bf
--- /dev/null
+++ b/scripts/dtc/dt_to_config
@@ -0,0 +1,1213 @@
+#!/usr/bin/env perl
+
+# Copyright 2016 by Frank Rowand
+# Copyright 2016 by Gaurav Minocha
+#
+# This file is subject to the terms and conditions of the GNU General Public
+# License v2.
+
+use strict 'refs';
+use strict subs;
+
+use Getopt::Long;
+
+$VUFX = "160610a";
+
+$script_name = $0;
+$script_name =~ s|^.*/||;
+
+
+# ----- constants for print_flags()
+
+# Position in string $pr_flags. Range of 0..($num_pr_flags - 1).
+$pr_flag_pos_mcompatible = 0;
+$pr_flag_pos_driver = 1;
+$pr_flag_pos_mdriver = 2;
+$pr_flag_pos_config = 3;
+$pr_flag_pos_mconfig = 4;
+$pr_flag_pos_node_not_enabled = 5;
+$pr_flag_pos_white_list = 6;
+$pr_flag_pos_hard_coded = 7;
+$pr_flag_pos_config_hard_coded = 8;
+$pr_flag_pos_config_none = 9;
+$pr_flag_pos_config_m = 10;
+$pr_flag_pos_config_y = 11;
+$pr_flag_pos_config_test_fail = 12;
+
+$num_pr_flags = $pr_flag_pos_config_test_fail + 1;
+
+# flags in @pr_flag_value must be unique values to allow simple regular
+# expessions to work for --include_flags and --exclude_flags.
+# Convention: use upper case letters for potential issues or problems.
+
+@pr_flag_value = ('M', 'd', 'D', 'c', 'C', 'E', 'W', 'H', 'x', 'n', 'm', 'y', 'F');
+
+@pr_flag_help = (
+ "multiple compatibles found for this node",
+ "driver found for this compatible",
+ "multiple drivers found for this compatible",
+ "kernel config found for this driver",
+ "multiple config options found for this driver",
+ "node is not enabled",
+ "compatible is white listed",
+ "matching driver and/or kernel config is hard coded",
+ "kernel config hard coded in Makefile",
+ "one or more kernel config file options is not set",
+ "one or more kernel config file options is set to 'm'",
+ "one or more kernel config file options is set to 'y'",
+ "one of more kernel config file options fails to have correct value"
+);
+
+
+# -----
+
+%driver_config = (); # driver config array, indexed by driver source file
+%driver_count = (); # driver_cnt, indexed by compatible
+%compat_driver = (); # compatible driver array, indexed by compatible
+%existing_config = (); # existing config symbols present in given config file
+ # expected values are: "y", "m", a decimal number, a
+ # hex number, or a string
+
+# ----- magic compatibles, do not have a driver
+#
+# Will not search for drivers for these compatibles.
+
+%compat_white_list = (
+ 'none' => '1',
+ 'pci' => '1',
+ 'simple-bus' => '1',
+);
+
+# Will not search for drivers for these compatibles.
+#
+# These compatibles have a very large number of false positives.
+#
+# 'hardcoded_no_driver' is a magic value. Other code knows this
+# magic value. Do not use 'no_driver' here!
+#
+# Revisit each 'hardcoded_no_driver' to see how the compatible
+# is used. Are there drivers that can be provided?
+
+%driver_hard_code_list = (
+ 'cache' => ['hardcoded_no_driver'],
+ 'eeprom' => ['hardcoded_no_driver'],
+ 'gpio' => ['hardcoded_no_driver'],
+ 'gpio-keys' => ['drivers/input/keyboard/gpio_keys.c'],
+ 'i2c-gpio' => ['drivers/i2c/busses/i2c-gpio.c'],
+ 'isa' => ['arch/mips/mti-malta/malta-dt.c',
+ 'arch/x86/kernel/devicetree.c'],
+ 'led' => ['hardcoded_no_driver'],
+ 'm25p32' => ['hardcoded_no_driver'],
+ 'm25p64' => ['hardcoded_no_driver'],
+ 'm25p80' => ['hardcoded_no_driver'],
+ 'mtd-ram' => ['drivers/mtd/maps/physmap_of.c'],
+ 'pwm-backlight' => ['drivers/video/backlight/pwm_bl.c'],
+ 'spidev' => ['hardcoded_no_driver'],
+ 'syscon' => ['drivers/mfd/syscon.c'],
+ 'tlv320aic23' => ['hardcoded_no_driver'],
+ 'wm8731' => ['hardcoded_no_driver'],
+);
+
+# Use these config options instead of searching makefiles
+
+%driver_config_hard_code_list = (
+
+ # this one needed even if %driver_hard_code_list is empty
+ 'no_driver' => ['no_config'],
+ 'hardcoded_no_driver' => ['no_config'],
+
+ # drivers/usb/host/ehci-ppc-of.c
+ # drivers/usb/host/ehci-xilinx-of.c
+ # are included from:
+ # drivers/usb/host/ehci-hcd.c
+ # thus the search of Makefile for the included .c files is incorrect
+ # ehci-hcd.c wraps the includes with ifdef CONFIG_USB_EHCI_HCD_..._OF
+ #
+ # similar model for ohci-hcd.c (but no ohci-xilinx-of.c)
+ #
+ # similarly, uhci-hcd.c includes uhci-platform.c
+
+ 'drivers/usb/host/ehci-ppc-of.c' => ['CONFIG_USB_EHCI_HCD',
+ 'CONFIG_USB_EHCI_HCD_PPC_OF'],
+ 'drivers/usb/host/ohci-ppc-of.c' => ['CONFIG_USB_OHCI_HCD',
+ 'CONFIG_USB_OHCI_HCD_PPC_OF'],
+
+ 'drivers/usb/host/ehci-xilinx-of.c' => ['CONFIG_USB_EHCI_HCD',
+ 'CONFIG_USB_EHCI_HCD_XILINX'],
+
+ 'drivers/usb/host/uhci-platform.c' => ['CONFIG_USB_UHCI_HCD',
+ 'CONFIG_USB_UHCI_PLATFORM'],
+
+ # scan_makefile will find only one of these config options:
+ # ifneq ($(CONFIG_SOC_IMX6)$(CONFIG_SOC_LS1021A),)
+ 'arch/arm/mach-imx/platsmp.c' => ['CONFIG_SOC_IMX6 && CONFIG_SMP',
+ 'CONFIG_SOC_LS1021A && CONFIG_SMP'],
+);
+
+
+# 'virt/kvm/arm/.*' are controlled by makefiles in other directories,
+# using relative paths, such as 'KVM := ../../../virt/kvm'. Do not
+# add complexity to find_kconfig() to deal with this. There is a long
+# term intent to change the kvm related makefiles to the normal kernel
+# style. After that is done, this entry can be removed from the
+# black_list_driver.
+
+@black_list_driver = (
+ # kvm no longer a problem after commit 503a62862e8f in 4.7-rc1
+ # 'virt/kvm/arm/.*',
+);
+
+
+sub usage()
+{
+ print
+"
+Usage: $script_name [options] device-tree...
+
+ device_tree is: dts_file | dtb_file | proc_device-tree
+
+
+Valid options:
+ -c FILE Read kernel config options from FILE
+ --config FILE synonym for 'c'
+ --config-format config file friendly output format
+ --exclude-flag FLAG exclude entries with a matching flag
+ -h Display this message and exit
+ --help synonym for 'h'
+ --black-list-driver use driver black list
+ --white-list-config use config white list
+ --white-list-driver use driver white list
+ --include-flag FLAG include only entries with a matching flag
+ --include-suspect include only entries with an uppercase flag
+ --short-name do not show the path portion of the node name
+ --show-lists report of white and black lists
+ --version Display program version and exit
+
+
+ Report driver source files that match the compatibles in the device
+ tree file and the kernel config options that enable the driver source
+ files.
+
+ This program must be run in the root directory of a Linux kernel
+ source tree.
+
+ The default format is a report that is intended to be easily human
+ scannable.
+
+ An alternate format can be selected by --config-format. This will
+ create output that can easily be edited to create a fragment that can
+ be appended to the existing kernel config file. Each entry consists of
+ multiple lines. The first line reports flags, the node path, compatible
+ value, driver file matching the compatible, configuration options, and
+ current values of the configuration options. For each configuration
+ option, the following lines report the current value and the value that
+ is required for the driver file to be included in the kernel.
+
+ If a large number of drivers or config options is listed for a node,
+ and the '$pr_flag_value[$pr_flag_pos_hard_coded]' flag is set consider using --white-list-config and/or
+ --white-list-driver. If the white list option suppresses the correct
+ entry please report that as a bug.
+
+ CAUTION:
+ This program uses heuristics to guess which driver(s) support each
+ compatible string and which config option(s) enables the driver(s).
+ Do not believe that the reported information is fully correct.
+ This program is intended to aid the process of determining the
+ proper kernel configuration for a device tree, but this is not
+ a fully automated process -- human involvement may still be
+ required!
+
+ The driver match heuristic used is to search for source files
+ containing the compatible string enclosed in quotes.
+
+ This program might not be able to find all drivers matching a
+ compatible string.
+
+ Some makefiles are overly clever. This program was not made
+ complex enough to handle them. If no config option is listed
+ for a driver, look at the makefile for the driver source file.
+ Even if a config option is listed for a driver, some other
+ available config options may not be listed.
+
+ FLAG values:
+";
+
+ for ($k = 0; $k < $num_pr_flags; $k++) {
+ printf " %s %s\n", $pr_flag_value[$k], $pr_flag_help[$k];
+ }
+
+ print
+"
+ Upper case letters indicate potential issues or problems.
+
+ The flag:
+
+";
+
+ $k = $pr_flag_pos_hard_coded;
+ printf " %s %s\n", $pr_flag_value[$k], $pr_flag_help[$k];
+
+ print
+"
+ will be set if the config or driver is in the white lists, even if
+ --white-list-config and --white-list-driver are not specified.
+ This is a hint that 1) many of these reported lines are likely to
+ be incorrect, and 2) using those options will reduce the number of
+ drivers and/or config options reported.
+
+ --white-list-config and --white-list-driver may not be accurate if this
+ program is not well maintained. Use them with appropriate skepticism.
+ Use the --show-lists option to report the values in the list.
+
+ Return value:
+ 0 if no error
+ 1 error processing command line
+ 2 unable to open or read kernel config file
+ 3 unable to open or process input device tree file(s)
+
+ EXAMPLES:
+
+ dt_to_config arch/arm/boot/dts/my_dts_file.dts
+
+ Basic report.
+
+ dt_to_config \\
+ --config \${KBUILD_OUTPUT}/.config \\
+ arch/\${ARCH}/boot/dts/my_dts_file.dts
+
+ Full report, with config file issues noted.
+
+ dt_to_config --include-suspect \\
+ --config \${KBUILD_OUTPUT}/.config \\
+ arch/\${ARCH}/boot/dts/my_dts_file.dts
+
+ Report of node / compatible string / driver tuples that should
+ be further investigated. A node may have multiple compatible
+ strings. A compatible string may be matched by multiple drivers.
+ A driver may have config file issues noted. The compatible string
+ and/or driver may be in the white lists.
+
+ dt_to_config --include-suspect --config-format \\
+ --config ${KBUILD_OUTPUT}/.config \\
+ arch/\${ARCH}/boot/dts/my_dts_file.dts
+
+ Report of node / compatible string / driver tuples that should
+ be further investigated. The report can be edited to uncomment
+ the config options to select the desired tuple for a given node.
+ A node may have multiple compatible strings. A compatible string
+ may be matched by multiple drivers. A driver may have config file
+ issues noted. The compatible string and/or driver may be in the
+ white lists.
+
+";
+}
+
+sub set_flag()
+{
+ # pr_flags_ref is a reference to $pr_flags
+
+ my $pr_flags_ref = shift;
+ my $pos = shift;
+
+ substr $$pr_flags_ref, $pos, 1, $pr_flag_value[$pos];
+
+ return $pr_flags;
+}
+
+sub print_flags()
+{
+ # return 1 if anything printed, else 0
+
+ # some fields of pn_arg_ref might not be used in this function, but
+ # extract all of them anyway.
+ my $pn_arg_ref = shift;
+
+ my $compat = $pn_arg_ref->{compat};
+ my $compatible_cnt = $pn_arg_ref->{compatible_cnt};
+ my $config = $pn_arg_ref->{config};
+ my $config_cnt = $pn_arg_ref->{config_cnt};
+ my $driver = $pn_arg_ref->{driver};
+ my $driver_cnt = $pn_arg_ref->{driver_cnt};
+ my $full_node = $pn_arg_ref->{full_node};
+ my $node = $pn_arg_ref->{node};
+ my $node_enabled = $pn_arg_ref->{node_enabled};
+ my $white_list = $pn_arg_ref->{white_list};
+
+ my $pr_flags = '-' x $num_pr_flags;
+
+
+ # ----- set flags in $pr_flags
+
+ if ($compatible_cnt > 1) {
+ &set_flag(\$pr_flags, $pr_flag_pos_mcompatible);
+ }
+
+ if ($config_cnt > 1) {
+ &set_flag(\$pr_flags, $pr_flag_pos_mconfig);
+ }
+
+ if ($driver_cnt >= 1) {
+ &set_flag(\$pr_flags, $pr_flag_pos_driver);
+ }
+
+ if ($driver_cnt > 1) {
+ &set_flag(\$pr_flags, $pr_flag_pos_mdriver);
+ }
+
+ # These strings are the same way the linux kernel tests.
+ # The ePapr lists of values is slightly different.
+ if (!(
+ ($node_enabled eq "") ||
+ ($node_enabled eq "ok") ||
+ ($node_enabled eq "okay")
+ )) {
+ &set_flag(\$pr_flags, $pr_flag_pos_node_not_enabled);
+ }
+
+ if ($white_list) {
+ &set_flag(\$pr_flags, $pr_flag_pos_white_list);
+ }
+
+ if (exists($driver_hard_code_list{$compat}) ||
+ (exists($driver_config_hard_code_list{$driver}) &&
+ ($driver ne "no_driver"))) {
+ &set_flag(\$pr_flags, $pr_flag_pos_hard_coded);
+ }
+
+ my @configs = split(' && ', $config);
+ for $configs (@configs) {
+ $not = $configs =~ /^!/;
+ $configs =~ s/^!//;
+
+ if (($configs ne "no_config") && ($configs ne "no_makefile")) {
+ &set_flag(\$pr_flags, $pr_flag_pos_config);
+ }
+
+ if (($config_cnt >= 1) &&
+ ($configs !~ /CONFIG_/) &&
+ (($configs ne "no_config") && ($configs ne "no_makefile"))) {
+ &set_flag(\$pr_flags, $pr_flag_pos_config_hard_coded);
+ }
+
+ my $existing_config = $existing_config{$configs};
+ if ($existing_config eq "m") {
+ &set_flag(\$pr_flags, $pr_flag_pos_config_m);
+ # Possible fail, depends on whether built in or
+ # module is desired.
+ &set_flag(\$pr_flags, $pr_flag_pos_config_test_fail);
+ } elsif ($existing_config eq "y") {
+ &set_flag(\$pr_flags, $pr_flag_pos_config_y);
+ if ($not) {
+ &set_flag(\$pr_flags, $pr_flag_pos_config_test_fail);
+ }
+ } elsif (($config_file) && ($configs =~ /CONFIG_/)) {
+ &set_flag(\$pr_flags, $pr_flag_pos_config_none);
+ if (!$not) {
+ &set_flag(\$pr_flags, $pr_flag_pos_config_test_fail);
+ }
+ }
+ }
+
+ # ----- include / exclude filters
+
+ if ($include_flag_pattern && ($pr_flags !~ m/$include_flag_pattern/)) {
+ return 0;
+ }
+
+ if ($exclude_flag_pattern && ($pr_flags =~ m/$exclude_flag_pattern/)) {
+ return 0;
+ }
+
+ if ($config_format) {
+ print "# ";
+ }
+ print "$pr_flags : ";
+
+ return 1;
+}
+
+
+sub print_node()
+{
+ # return number of lines printed
+
+ # some fields of pn_arg_ref might not be used in this function, but
+ # extract all of them anyway.
+ my $pn_arg_ref = shift;
+
+ my $compat = $pn_arg_ref->{compat};
+ my $compatible_cnt = $pn_arg_ref->{compatible_cnt};
+ my $config = $pn_arg_ref->{config};
+ my $config_cnt = $pn_arg_ref->{config_cnt};
+ my $driver = $pn_arg_ref->{driver};
+ my $driver_cnt = $pn_arg_ref->{driver_cnt};
+ my $full_node = $pn_arg_ref->{full_node};
+ my $node = $pn_arg_ref->{node};
+ my $node_enabled = $pn_arg_ref->{node_enabled};
+ my $white_list = $pn_arg_ref->{white_list};
+
+ my $separator;
+
+ if (! &print_flags($pn_arg_ref)) {
+ return 0;
+ }
+
+
+ if ($short_name) {
+ print "$node";
+ } else {
+ print "$full_node";
+ }
+ print " : $compat : $driver : $config : ";
+
+ my @configs = split(' && ', $config);
+
+ if ($config_file) {
+ for $configs (@configs) {
+ $configs =~ s/^!//;
+ my $existing_config = $existing_config{$configs};
+ if (!$existing_config) {
+ # check for /-m/, /-y/, or /-objs/
+ if ($configs !~ /CONFIG_/) {
+ $existing_config = "x";
+ };
+ };
+ if ($existing_config) {
+ print "$separator", "$existing_config";
+ $separator = ", ";
+ } else {
+ print "$separator", "n";
+ $separator = ", ";
+ }
+ }
+ } else {
+ print "none";
+ }
+
+ print "\n";
+
+ if ($config_format) {
+ for $configs (@configs) {
+ $not = $configs =~ /^!/;
+ $configs =~ s/^!//;
+ my $existing_config = $existing_config{$configs};
+
+ if ($not) {
+ if ($configs !~ /CONFIG_/) {
+ print "# $configs\n";
+ } elsif ($existing_config eq "m") {
+ print "# $configs is m\n";
+ print "# $configs=n\n";
+ } elsif ($existing_config eq "y") {
+ print "# $configs is set\n";
+ print "# $configs=n\n";
+ } else {
+ print "# $configs is not set\n";
+ print "# $configs=n\n";
+ }
+
+ } else {
+ if ($configs !~ /CONFIG_/) {
+ print "# $configs\n";
+ } elsif ($existing_config eq "m") {
+ print "# $configs is m\n";
+ print "# $configs=y\n";
+ } elsif ($existing_config eq "y") {
+ print "# $configs is set\n";
+ print "# $configs=y\n";
+ } else {
+ print "# $configs is not set\n";
+ print "# $configs=y\n";
+ }
+ }
+ }
+ }
+
+ return 1;
+}
+
+
+sub scan_makefile
+{
+ my $pn_arg_ref = shift;
+ my $driver = shift;
+
+ # ----- Find Kconfig symbols that enable driver
+
+ my ($dir, $base) = $driver =~ m{(.*)/(.*).c};
+
+ my $makefile = $dir . "/Makefile";
+ if (! -r $makefile) {
+ $makefile = $dir . "/Kbuild";
+ }
+ if (! -r $makefile) {
+ my $config;
+
+ $config = 'no_makefile';
+ push @{ $driver_config{$driver} }, $config;
+ return;
+ }
+
+ if (!open(MAKEFILE_FILE, "<", "$makefile")) {
+ return;
+ }
+
+ my $line;
+ my @config;
+ my @if_config;
+ my @make_var;
+
+ NEXT_LINE:
+ while ($next_line = <MAKEFILE_FILE>) {
+ my $config;
+ my $if_config;
+ my $ifdef;
+ my $ifeq;
+ my $ifndef;
+ my $ifneq;
+ my $ifdef_config;
+ my $ifeq_config;
+ my $ifndef_config;
+ my $ifneq_config;
+
+ chomp($next_line);
+ $line = $line . $next_line;
+ if ($next_line =~ /\\$/) {
+ $line =~ s/\\$/ /;
+ next NEXT_LINE;
+ }
+ if ($line =~ /^\s*#/) {
+ $line = "";
+ next NEXT_LINE;
+ }
+
+ # ----- condition ... else ... endif
+
+ if ($line =~ /^([ ]\s*|)else\b/) {
+ $if_config = "!" . pop @if_config;
+ $if_config =~ s/^!!//;
+ push @if_config, $if_config;
+ $line =~ s/^([ ]\s*|)else\b//;
+ }
+
+ ($null, $ifeq_config, $ifeq_config_val ) = $line =~ /^([ ]\s*|)ifeq\b.*\b(CONFIG_[A-Za-z0-9_]*)(.*)/;
+ ($null, $ifneq_config, $ifneq_config_val) = $line =~ /^([ ]\s*|)ifneq\b.*\b(CONFIG_[A-Za-z0-9_]*)(.*)/;
+ ($null, $ifdef_config) = $line =~ /^([ ]\s*|)ifdef\b.*\b(CONFIG_[A-Za-z0-9_]*)/;
+ ($null, $ifndef_config) = $line =~ /^([ ]\s*|)ifndef\b.*\b(CONFIG_[A-Za-z0-9_]*)/;
+
+ ($null, $ifeq) = $line =~ /^([ ]\s*|)ifeq\b\s*(.*)/;
+ ($null, $ifneq) = $line =~ /^([ ]\s*|)ifneq\b\s*(.*)/;
+ ($null, $ifdef) = $line =~ /^([ ]\s*|)ifdef\b\s*(.*)/;
+ ($null, $ifndef) = $line =~ /^([ ]\s*|)ifndef\b\s*(.*)/;
+
+ # Order of tests is important. Prefer "CONFIG_*" regex match over
+ # less specific regex match.
+ if ($ifdef_config) {
+ $if_config = $ifdef_config;
+ } elsif ($ifeq_config) {
+ if ($ifeq_config_val =~ /y/) {
+ $if_config = $ifeq_config;
+ } else {
+ $if_config = "!" . $ifeq_config;
+ }
+ } elsif ($ifndef_config) {
+ $if_config = "!" . $ifndef_config;
+ } elsif ($ifneq_config) {
+ if ($ifneq_config_val =~ /y/) {
+ $if_config = "!" . $ifneq_config;
+ } else {
+ $if_config = $ifneq_config;
+ }
+ } elsif ($ifdef) {
+ $if_config = $ifdef;
+ } elsif ($ifeq) {
+ $if_config = $ifeq;
+ } elsif ($ifndef) {
+ $if_config = "!" . $ifndef;
+ } elsif ($ifneq) {
+ $if_config = "!" . $ifneq;
+ } else {
+ $if_config = "";
+ }
+ $if_config =~ s/^!!//;
+
+ if ($if_config) {
+ push @if_config, $if_config;
+ $line = "";
+ next NEXT_LINE;
+ }
+
+ if ($line =~ /^([ ]\s*|)endif\b/) {
+ pop @if_config;
+ $line = "";
+ next NEXT_LINE;
+ }
+
+ # ----- simple CONFIG_* = *.[co] or xxx [+:?]*= *.[co]
+ # Most makefiles select on *.o, but
+ # arch/powerpc/boot/Makefile selects on *.c
+
+ ($config) = $line =~ /(CONFIG_[A-Za-z0-9_]+).*\b$base.[co]\b/;
+
+ # ----- match a make variable instead of *.[co]
+ # Recursively expanded variables are not handled.
+
+ if (!$config) {
+ my $make_var;
+ ($make_var) = $line =~ /\s*(\S+?)\s*[+:\?]*=.*\b$base.[co]\b/;
+ if ($make_var) {
+ if ($make_var =~ /[a-zA-Z0-9]+-[ym]/) {
+ $config = $make_var;
+ } elsif ($make_var =~ /[a-zA-Z0-9]+-objs/) {
+ $config = $make_var;
+ } else {
+ push @make_var, $make_var;
+ }
+ }
+ }
+
+ if (!$config) {
+ for $make_var (@make_var) {
+ ($config) = $line =~ /(CONFIG_[A-Za-z0-9_]+).*\b$make_var\b/;
+ last if ($config);
+ }
+ }
+
+ if (!$config) {
+ for $make_var (@make_var) {
+ ($config) = $line =~ /\s*(\S+?)\s*[+:\?]*=.*\b$make_var\b/;
+ last if ($config);
+ }
+ }
+
+ # ----- next if no config found
+
+ if (!$config) {
+ $line = "";
+ next NEXT_LINE;
+ }
+
+ for $if_config (@if_config) {
+ $config = $if_config . " && " . $config;
+ }
+
+ push @{ $driver_config{$driver} }, $config;
+
+ $line = "";
+ }
+
+ close(MAKEFILE_FILE);
+
+}
+
+
+sub find_kconfig
+{
+ my $pn_arg_ref = shift;
+ my $driver = shift;
+
+ my $lines_printed = 0;
+ my @configs;
+
+ if (!@{ $driver_config{$driver} }) {
+ &scan_makefile($pn_arg_ref, $driver);
+ if (!@{ $driver_config{$driver} }) {
+ push @{ $driver_config{$driver} }, "no_config";
+ }
+ }
+
+ @configs = @{ $driver_config{$driver} };
+
+ $$pn_arg_ref{config_cnt} = $#configs + 1;
+ for my $config (@configs) {
+ $$pn_arg_ref{config} = $config;
+ $lines_printed += &print_node($pn_arg_ref);
+ }
+
+ return $lines_printed;
+}
+
+
+sub handle_compatible()
+{
+ my $full_node = shift;
+ my $node = shift;
+ my $compatible = shift;
+ my $node_enabled = shift;
+
+ my $compat;
+ my $lines_printed = 0;
+ my %pn_arg = ();
+
+ return if (!$node or !$compatible);
+
+ # Do not process compatible property of root node,
+ # it is used to match board, not to bind a driver.
+ return if ($node eq "/");
+
+ $pn_arg{full_node} = $full_node;
+ $pn_arg{node} = $node;
+ $pn_arg{node_enabled} = $node_enabled;
+
+ my @compatibles = split('", "', $compatible);
+
+ $compatibles[0] =~ s/^"//;
+ $compatibles[$#compatibles] =~ s/"$//;
+
+ $pn_arg{compatible_cnt} = $#compatibles + 1;
+
+ COMPAT:
+ for $compat (@compatibles) {
+
+ $pn_arg{compat} = $compat;
+ $pn_arg{driver_cnt} = 0;
+ $pn_arg{white_list} = 0;
+
+ if (exists($compat_white_list{$compat})) {
+ $pn_arg{white_list} = 1;
+ $pn_arg{driver} = "no_driver";
+ $pn_arg{config_cnt} = 1;
+ $pn_arg{config} = "no_config";
+ $lines_printed += &print_node(\%pn_arg);
+ next COMPAT;
+ }
+
+ # ----- if compat previously seen, use cached info
+
+ if (exists($compat_driver{$compat})) {
+ for my $driver (@{ $compat_driver{$compat} }) {
+ $pn_arg{driver} = $driver;
+ $pn_arg{driver_cnt} = $driver_count{$compat};
+ $pn_arg{config_cnt} = $#{ $driver_config{$driver}} + 1;
+
+ for my $config (@{ $driver_config{$driver} }) {
+ $pn_arg{config} = $config;
+ $lines_printed += &print_node(\%pn_arg);
+ }
+
+ if (!@{ $driver_config{$driver} }) {
+ # no config cached yet
+ # $driver in %driver_hard_code_list
+ # but not %driver_config_hard_code_list
+ $lines_printed += &find_kconfig(\%pn_arg, $driver);
+ }
+ }
+ next COMPAT;
+ }
+
+
+ # ----- Find drivers (source files that contain compatible)
+
+ # this will miss arch/sparc/include/asm/parport.h
+ # It is better to move the compatible out of the .h
+ # than to add *.h. to the files list, because *.h generates
+ # a lot of false negatives.
+ my $files = '"*.c"';
+ my $drivers = `git grep -l '"$compat"' -- $files`;
+ chomp($drivers);
+ if ($drivers eq "") {
+ $pn_arg{driver} = "no_driver";
+ $pn_arg{config_cnt} = 1;
+ $pn_arg{config} = "no_config";
+ push @{ $compat_driver{$compat} }, "no_driver";
+ $lines_printed += &print_node(\%pn_arg);
+ next COMPAT;
+ }
+
+ my @drivers = split("\n", $drivers);
+ $driver_count{$compat} = $#drivers + 1;
+ $pn_arg{driver_cnt} = $#drivers + 1;
+
+ DRIVER:
+ for my $driver (@drivers) {
+ push @{ $compat_driver{$compat} }, $driver;
+ $pn_arg{driver} = $driver;
+
+ # ----- if driver previously seen, use cached info
+
+ $pn_arg{config_cnt} = $#{ $driver_config{$driver} } + 1;
+ for my $config (@{ $driver_config{$driver} }) {
+ $pn_arg{config} = $config;
+ $lines_printed += &print_node(\%pn_arg);
+ }
+ if (@{ $driver_config{$driver} }) {
+ next DRIVER;
+ }
+
+ if ($black_list_driver) {
+ for $black (@black_list_driver) {
+ next DRIVER if ($driver =~ /^$black$/);
+ }
+ }
+
+
+ # ----- Find Kconfig symbols that enable driver
+
+ $lines_printed += &find_kconfig(\%pn_arg, $driver);
+
+ }
+ }
+
+ # White space (line) between nodes for readability.
+ # Each node may report several compatibles.
+ # For each compatible, multiple drivers may be reported.
+ # For each driver, multiple CONFIG_ options may be reported.
+ if ($lines_printed) {
+ print "\n";
+ }
+}
+
+sub read_dts()
+{
+ my $file = shift;
+
+ my $compatible = "";
+ my $line;
+ my $node = "";
+ my $node_enabled = "";
+
+ if (! -r $file) {
+ print STDERR "file '$file' is not readable or does not exist\n";
+ exit 3;
+ }
+
+ if (!open(DT_FILE, "-|", "$dtx_diff $file")) {
+ print STDERR "\n";
+ print STDERR "shell command failed:\n";
+ print STDERR " $dtx_diff $file\n";
+ print STDERR "\n";
+ exit 3;
+ }
+
+ FILE:
+ while ($line = <DT_FILE>) {
+ chomp($line);
+
+ if ($line =~ /{/) {
+
+ &handle_compatible($full_node, $node, $compatible,
+ $node_enabled);
+
+ while ($end_node_count-- > 0) {
+ pop @full_node;
+ };
+ $end_node_count = 0;
+ $full_node = @full_node[-1];
+
+ $node = $line;
+ $node =~ s/^\s*(.*)\s+\{.*/$1/;
+ $node =~ s/.*: //;
+ if ($node eq '/' ) {
+ $full_node = '/';
+ } elsif ($full_node ne '/') {
+ $full_node = $full_node . '/' . $node;
+ } else {
+ $full_node = '/' . $node;
+ }
+ push @full_node, $full_node;
+
+ $compatible = "";
+ $node_enabled = "";
+ next FILE;
+ }
+
+ if ($line =~ /}/) {
+ $end_node_count++;
+ }
+
+ if ($line =~ /(\s+|^)status =/) {
+ $node_enabled = $line;
+ $node_enabled =~ s/^\t*//;
+ $node_enabled =~ s/^status = "//;
+ $node_enabled =~ s/";$//;
+ next FILE;
+ }
+
+ if ($line =~ /(\s+|^)compatible =/) {
+ # Extract all compatible entries for this device
+ # White space matching here and in handle_compatible() is
+ # precise, because input format is the output of dtc,
+ # which is invoked by dtx_diff.
+ $compatible = $line;
+ $compatible =~ s/^\t*//;
+ $compatible =~ s/^compatible = //;
+ $compatible =~ s/;$//;
+ }
+ }
+
+ &handle_compatible($full_node, $node, $compatible, $node_enabled);
+
+ close(DT_FILE);
+}
+
+
+sub read_config_file()
+{
+ if (! -r $config_file) {
+ print STDERR "file '$config_file' is not readable or does not exist\n";
+ exit 2;
+ }
+
+ if (!open(CONFIG_FILE, "<", "$config_file")) {
+ print STDERR "open $config_file failed\n";
+ exit 2;
+ }
+
+ my @line;
+
+ LINE:
+ while ($line = <CONFIG_FILE>) {
+ chomp($line);
+ next LINE if ($line =~ /^\s*#/);
+ next LINE if ($line =~ /^\s*$/);
+ @line = split /=/, $line;
+ $existing_config{@line[0]} = @line[1];
+ }
+
+ close(CONFIG_FILE);
+}
+
+
+sub cmd_line_err()
+{
+ my $msg = shift;
+
+ print STDERR "\n";
+ print STDERR " ERROR processing command line options\n";
+ print STDERR " $msg\n" if ($msg ne "");
+ print STDERR "\n";
+ print STDERR " For help, type '$script_name --help'\n";
+ print STDERR "\n";
+}
+
+
+# -----------------------------------------------------------------------------
+# program entry point
+
+Getopt::Long::Configure("no_ignore_case", "bundling");
+
+if (!GetOptions(
+ "c=s" => \$config_file,
+ "config=s" => \$config_file,
+ "config-format" => \$config_format,
+ "exclude-flag=s" => \@exclude_flag,
+ "h" => \$help,
+ "help" => \$help,
+ "black-list-driver" => \$black_list_driver,
+ "white-list-config" => \$white_list_config,
+ "white-list-driver" => \$white_list_driver,
+ "include-flag=s" => \@include_flag,
+ "include-suspect" => \$include_suspect,
+ "short-name" => \$short_name,
+ "show-lists" => \$show_lists,
+ "version" => \$version,
+ )) {
+
+ &cmd_line_err();
+
+ exit 1;
+}
+
+
+my $exit_after_messages = 0;
+
+if ($version) {
+ print STDERR "\n$script_name $VUFX\n\n";
+ $exit_after_messages = 1;
+}
+
+
+if ($help) {
+ &usage;
+ $exit_after_messages = 1;
+}
+
+
+if ($show_lists) {
+
+ print "\n";
+ print "These compatibles are hard coded to have no driver.\n";
+ print "\n";
+ for my $compat (sort keys %compat_white_list) {
+ print " $compat\n";
+ }
+
+
+ print "\n\n";
+ print "The driver for these compatibles is hard coded (white list).\n";
+ print "\n";
+ my $max_compat_len = 0;
+ for my $compat (sort keys %driver_hard_code_list) {
+ if (length $compat > $max_compat_len) {
+ $max_compat_len = length $compat;
+ }
+ }
+ for my $compat (sort keys %driver_hard_code_list) {
+ if (($driver ne "hardcoded_no_driver") && ($driver ne "no_driver")) {
+ my $first = 1;
+ for my $driver (@{ $driver_hard_code_list{$compat} }) {
+ if ($first) {
+ print " $compat";
+ print " " x ($max_compat_len - length $compat);
+ $first = 0;
+ } else {
+ print " ", " " x $max_compat_len;
+ }
+ print " $driver\n";
+ }
+ }
+ }
+
+
+ print "\n\n";
+ print "The configuration option for these drivers is hard coded (white list).\n";
+ print "\n";
+ my $max_driver_len = 0;
+ for my $driver (sort keys %driver_config_hard_code_list) {
+ if (length $driver > $max_driver_len) {
+ $max_driver_len = length $driver;
+ }
+ }
+ for my $driver (sort keys %driver_config_hard_code_list) {
+ if (($driver ne "hardcoded_no_driver") && ($driver ne "no_driver")) {
+ my $first = 1;
+ for my $config (@{ $driver_config_hard_code_list{$driver} }) {
+ if ($first) {
+ print " $driver";
+ print " " x ($max_driver_len - length $driver);
+ $first = 0;
+ } else {
+ print " ", " " x $max_driver_len;
+ }
+ print " $config\n";
+ }
+ }
+ }
+
+
+ print "\n\n";
+ print "These drivers are black listed.\n";
+ print "\n";
+ for my $driver (@black_list_driver) {
+ print " $driver\n";
+ }
+
+ print "\n";
+
+ $exit_after_messages = 1;
+}
+
+
+if ($exit_after_messages) {
+ exit 0;
+}
+
+
+$exclude_flag_pattern = "[";
+for my $exclude_flag (@exclude_flag) {
+ $exclude_flag_pattern = $exclude_flag_pattern . $exclude_flag;
+}
+$exclude_flag_pattern = $exclude_flag_pattern . "]";
+# clean up if empty
+$exclude_flag_pattern =~ s/^\[\]$//;
+
+
+$include_flag_pattern = "[";
+for my $include_flag (@include_flag) {
+ $include_flag_pattern = $include_flag_pattern . $include_flag;
+}
+$include_flag_pattern = $include_flag_pattern . "]";
+# clean up if empty
+$include_flag_pattern =~ s/^\[\]$//;
+
+
+if ($exclude_flag_pattern) {
+ my $found = 0;
+ for $pr_flag_value (@pr_flag_value) {
+ if ($exclude_flag_pattern =~ m/$pr_flag_value/) {
+ $found = 1;
+ }
+ }
+ if (!$found) {
+ &cmd_line_err("invalid value for FLAG in --exclude-flag\n");
+ exit 1
+ }
+}
+
+if ($include_flag_pattern) {
+ my $found = 0;
+ for $pr_flag_value (@pr_flag_value) {
+ if ($include_flag_pattern =~ m/$pr_flag_value/) {
+ $found = 1;
+ }
+ }
+ if (!$found) {
+ &cmd_line_err("invalid value for FLAG in --include-flag\n");
+ exit 1
+ }
+}
+
+if ($include_suspect) {
+ $include_flag_pattern =~ s/\[//;
+ $include_flag_pattern =~ s/\]//;
+ $include_flag_pattern = "[" . $include_flag_pattern . "A-Z]";
+}
+
+if ($exclude_flag_pattern =~ m/$include_flag_pattern/) {
+ &cmd_line_err("the same flag appears in both --exclude-flag and --include-flag or --include-suspect\n");
+ exit 1
+}
+
+
+# ($#ARGV < 0) is valid for --help, --version
+if ($#ARGV < 0) {
+ &cmd_line_err("device-tree... is required");
+ exit 1
+}
+
+
+if ($config_file) {
+ &read_config_file();
+}
+
+
+# avoid pushing duplicates for this value
+$driver = "hardcoded_no_driver";
+for $config ( @{ $driver_config_hard_code_list{$driver} } ) {
+ push @{ $driver_config{$driver} }, $config;
+}
+
+if ($white_list_driver) {
+ for my $compat (keys %driver_hard_code_list) {
+ for my $driver (@{ $driver_hard_code_list{$compat} }) {
+ push @{ $compat_driver{$compat} }, $driver;
+ if ($driver ne "hardcoded_no_driver") {
+ $driver_count{$compat} = scalar @{ $compat_driver{$compat} };
+ }
+ }
+ }
+}
+
+if ($white_list_config) {
+ for my $driver (keys %driver_config_hard_code_list) {
+ if ($driver ne "hardcoded_no_driver") {
+ for $config ( @{ $driver_config_hard_code_list{$driver} } ) {
+ push @{ $driver_config{$driver} }, $config;
+ }
+ }
+ }
+}
+
+if (-x "scripts/dtc/dtx_diff") {
+ $dtx_diff = "scripts/dtc/dtx_diff";
+} else {
+
+ print STDERR "\n";
+ print STDERR "$script_name must be run from the root directory of a Linux kernel tree\n";
+ print STDERR "\n";
+ exit 3;
+}
+
+for $file (@ARGV) {
+ &read_dts($file);
+}
diff --git a/scripts/dtc/dtc-lexer.l b/scripts/dtc/dtc-lexer.l
new file mode 100644
index 0000000..615b7ec
--- /dev/null
+++ b/scripts/dtc/dtc-lexer.l
@@ -0,0 +1,313 @@
+/*
+ * (C) Copyright David Gibson <dwg@au1.ibm.com>, IBM Corporation. 2005.
+ *
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ * USA
+ */
+
+%option noyywrap nounput noinput never-interactive
+
+%x BYTESTRING
+%x PROPNODENAME
+%s V1
+
+PROPNODECHAR [a-zA-Z0-9,._+*#?@-]
+PATHCHAR ({PROPNODECHAR}|[/])
+LABEL [a-zA-Z_][a-zA-Z0-9_]*
+STRING \"([^\\"]|\\.)*\"
+CHAR_LITERAL '([^']|\\')*'
+WS [[:space:]]
+COMMENT "/*"([^*]|\*+[^*/])*\*+"/"
+LINECOMMENT "//".*\n
+
+%{
+#include "dtc.h"
+#include "srcpos.h"
+#include "dtc-parser.tab.h"
+
+YYLTYPE yylloc;
+extern bool treesource_error;
+
+/* CAUTION: this will stop working if we ever use yyless() or yyunput() */
+#define YY_USER_ACTION \
+ { \
+ srcpos_update(&yylloc, yytext, yyleng); \
+ }
+
+/*#define LEXDEBUG 1*/
+
+#ifdef LEXDEBUG
+#define DPRINT(fmt, ...) fprintf(stderr, fmt, ##__VA_ARGS__)
+#else
+#define DPRINT(fmt, ...) do { } while (0)
+#endif
+
+static int dts_version = 1;
+
+#define BEGIN_DEFAULT() DPRINT("<V1>\n"); \
+ BEGIN(V1); \
+
+static void push_input_file(const char *filename);
+static bool pop_input_file(void);
+static void PRINTF(1, 2) lexical_error(const char *fmt, ...);
+
+%}
+
+%%
+<*>"/include/"{WS}*{STRING} {
+ char *name = strchr(yytext, '\"') + 1;
+ yytext[yyleng-1] = '\0';
+ push_input_file(name);
+ }
+
+<*>^"#"(line)?[ \t]+[0-9]+[ \t]+{STRING}([ \t]+[0-9]+)? {
+ char *line, *fnstart, *fnend;
+ struct data fn;
+ /* skip text before line # */
+ line = yytext;
+ while (!isdigit((unsigned char)*line))
+ line++;
+
+ /* regexp ensures that first and list "
+ * in the whole yytext are those at
+ * beginning and end of the filename string */
+ fnstart = memchr(yytext, '"', yyleng);
+ for (fnend = yytext + yyleng - 1;
+ *fnend != '"'; fnend--)
+ ;
+ assert(fnstart && fnend && (fnend > fnstart));
+
+ fn = data_copy_escape_string(fnstart + 1,
+ fnend - fnstart - 1);
+
+ /* Don't allow nuls in filenames */
+ if (memchr(fn.val, '\0', fn.len - 1))
+ lexical_error("nul in line number directive");
+
+ /* -1 since #line is the number of the next line */
+ srcpos_set_line(xstrdup(fn.val), atoi(line) - 1);
+ data_free(fn);
+ }
+
+<*><<EOF>> {
+ if (!pop_input_file()) {
+ yyterminate();
+ }
+ }
+
+<*>{STRING} {
+ DPRINT("String: %s\n", yytext);
+ yylval.data = data_copy_escape_string(yytext+1,
+ yyleng-2);
+ return DT_STRING;
+ }
+
+<*>"/dts-v1/" {
+ DPRINT("Keyword: /dts-v1/\n");
+ dts_version = 1;
+ BEGIN_DEFAULT();
+ return DT_V1;
+ }
+
+<*>"/plugin/" {
+ DPRINT("Keyword: /plugin/\n");
+ return DT_PLUGIN;
+ }
+
+<*>"/memreserve/" {
+ DPRINT("Keyword: /memreserve/\n");
+ BEGIN_DEFAULT();
+ return DT_MEMRESERVE;
+ }
+
+<*>"/bits/" {
+ DPRINT("Keyword: /bits/\n");
+ BEGIN_DEFAULT();
+ return DT_BITS;
+ }
+
+<*>"/delete-property/" {
+ DPRINT("Keyword: /delete-property/\n");
+ DPRINT("<PROPNODENAME>\n");
+ BEGIN(PROPNODENAME);
+ return DT_DEL_PROP;
+ }
+
+<*>"/delete-node/" {
+ DPRINT("Keyword: /delete-node/\n");
+ DPRINT("<PROPNODENAME>\n");
+ BEGIN(PROPNODENAME);
+ return DT_DEL_NODE;
+ }
+
+<*>"/omit-if-no-ref/" {
+ DPRINT("Keyword: /omit-if-no-ref/\n");
+ DPRINT("<PROPNODENAME>\n");
+ BEGIN(PROPNODENAME);
+ return DT_OMIT_NO_REF;
+ }
+
+<*>{LABEL}: {
+ DPRINT("Label: %s\n", yytext);
+ yylval.labelref = xstrdup(yytext);
+ yylval.labelref[yyleng-1] = '\0';
+ return DT_LABEL;
+ }
+
+<V1>([0-9]+|0[xX][0-9a-fA-F]+)(U|L|UL|LL|ULL)? {
+ char *e;
+ DPRINT("Integer Literal: '%s'\n", yytext);
+
+ errno = 0;
+ yylval.integer = strtoull(yytext, &e, 0);
+
+ if (*e && e[strspn(e, "UL")]) {
+ lexical_error("Bad integer literal '%s'",
+ yytext);
+ }
+
+ if (errno == ERANGE)
+ lexical_error("Integer literal '%s' out of range",
+ yytext);
+ else
+ /* ERANGE is the only strtoull error triggerable
+ * by strings matching the pattern */
+ assert(errno == 0);
+ return DT_LITERAL;
+ }
+
+<*>{CHAR_LITERAL} {
+ struct data d;
+ DPRINT("Character literal: %s\n", yytext);
+
+ d = data_copy_escape_string(yytext+1, yyleng-2);
+ if (d.len == 1) {
+ lexical_error("Empty character literal");
+ yylval.integer = 0;
+ } else {
+ yylval.integer = (unsigned char)d.val[0];
+
+ if (d.len > 2)
+ lexical_error("Character literal has %d"
+ " characters instead of 1",
+ d.len - 1);
+ }
+
+ data_free(d);
+ return DT_CHAR_LITERAL;
+ }
+
+<*>\&{LABEL} { /* label reference */
+ DPRINT("Ref: %s\n", yytext+1);
+ yylval.labelref = xstrdup(yytext+1);
+ return DT_REF;
+ }
+
+<*>"&{/"{PATHCHAR}*\} { /* new-style path reference */
+ yytext[yyleng-1] = '\0';
+ DPRINT("Ref: %s\n", yytext+2);
+ yylval.labelref = xstrdup(yytext+2);
+ return DT_REF;
+ }
+
+<BYTESTRING>[0-9a-fA-F]{2} {
+ yylval.byte = strtol(yytext, NULL, 16);
+ DPRINT("Byte: %02x\n", (int)yylval.byte);
+ return DT_BYTE;
+ }
+
+<BYTESTRING>"]" {
+ DPRINT("/BYTESTRING\n");
+ BEGIN_DEFAULT();
+ return ']';
+ }
+
+<PROPNODENAME>\\?{PROPNODECHAR}+ {
+ DPRINT("PropNodeName: %s\n", yytext);
+ yylval.propnodename = xstrdup((yytext[0] == '\\') ?
+ yytext + 1 : yytext);
+ BEGIN_DEFAULT();
+ return DT_PROPNODENAME;
+ }
+
+"/incbin/" {
+ DPRINT("Binary Include\n");
+ return DT_INCBIN;
+ }
+
+<*>{WS}+ /* eat whitespace */
+<*>{COMMENT}+ /* eat C-style comments */
+<*>{LINECOMMENT}+ /* eat C++-style comments */
+
+<*>"<<" { return DT_LSHIFT; };
+<*>">>" { return DT_RSHIFT; };
+<*>"<=" { return DT_LE; };
+<*>">=" { return DT_GE; };
+<*>"==" { return DT_EQ; };
+<*>"!=" { return DT_NE; };
+<*>"&&" { return DT_AND; };
+<*>"||" { return DT_OR; };
+
+<*>. {
+ DPRINT("Char: %c (\\x%02x)\n", yytext[0],
+ (unsigned)yytext[0]);
+ if (yytext[0] == '[') {
+ DPRINT("<BYTESTRING>\n");
+ BEGIN(BYTESTRING);
+ }
+ if ((yytext[0] == '{')
+ || (yytext[0] == ';')) {
+ DPRINT("<PROPNODENAME>\n");
+ BEGIN(PROPNODENAME);
+ }
+ return yytext[0];
+ }
+
+%%
+
+static void push_input_file(const char *filename)
+{
+ assert(filename);
+
+ srcfile_push(filename);
+
+ yyin = current_srcfile->f;
+
+ yypush_buffer_state(yy_create_buffer(yyin, YY_BUF_SIZE));
+}
+
+
+static bool pop_input_file(void)
+{
+ if (srcfile_pop() == 0)
+ return false;
+
+ yypop_buffer_state();
+ yyin = current_srcfile->f;
+
+ return true;
+}
+
+static void lexical_error(const char *fmt, ...)
+{
+ va_list ap;
+
+ va_start(ap, fmt);
+ srcpos_verror(&yylloc, "Lexical error", fmt, ap);
+ va_end(ap);
+
+ treesource_error = true;
+}
diff --git a/scripts/dtc/dtc-parser.y b/scripts/dtc/dtc-parser.y
new file mode 100644
index 0000000..011a5b2
--- /dev/null
+++ b/scripts/dtc/dtc-parser.y
@@ -0,0 +1,555 @@
+/*
+ * (C) Copyright David Gibson <dwg@au1.ibm.com>, IBM Corporation. 2005.
+ *
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ * USA
+ */
+%{
+#include <stdio.h>
+#include <inttypes.h>
+
+#include "dtc.h"
+#include "srcpos.h"
+
+extern int yylex(void);
+extern void yyerror(char const *s);
+#define ERROR(loc, ...) \
+ do { \
+ srcpos_error((loc), "Error", __VA_ARGS__); \
+ treesource_error = true; \
+ } while (0)
+
+extern struct dt_info *parser_output;
+extern bool treesource_error;
+%}
+
+%union {
+ char *propnodename;
+ char *labelref;
+ uint8_t byte;
+ struct data data;
+
+ struct {
+ struct data data;
+ int bits;
+ } array;
+
+ struct property *prop;
+ struct property *proplist;
+ struct node *node;
+ struct node *nodelist;
+ struct reserve_info *re;
+ uint64_t integer;
+ unsigned int flags;
+}
+
+%token DT_V1
+%token DT_PLUGIN
+%token DT_MEMRESERVE
+%token DT_LSHIFT DT_RSHIFT DT_LE DT_GE DT_EQ DT_NE DT_AND DT_OR
+%token DT_BITS
+%token DT_DEL_PROP
+%token DT_DEL_NODE
+%token DT_OMIT_NO_REF
+%token <propnodename> DT_PROPNODENAME
+%token <integer> DT_LITERAL
+%token <integer> DT_CHAR_LITERAL
+%token <byte> DT_BYTE
+%token <data> DT_STRING
+%token <labelref> DT_LABEL
+%token <labelref> DT_REF
+%token DT_INCBIN
+
+%type <data> propdata
+%type <data> propdataprefix
+%type <flags> header
+%type <flags> headers
+%type <re> memreserve
+%type <re> memreserves
+%type <array> arrayprefix
+%type <data> bytestring
+%type <prop> propdef
+%type <proplist> proplist
+
+%type <node> devicetree
+%type <node> nodedef
+%type <node> subnode
+%type <nodelist> subnodes
+
+%type <integer> integer_prim
+%type <integer> integer_unary
+%type <integer> integer_mul
+%type <integer> integer_add
+%type <integer> integer_shift
+%type <integer> integer_rela
+%type <integer> integer_eq
+%type <integer> integer_bitand
+%type <integer> integer_bitxor
+%type <integer> integer_bitor
+%type <integer> integer_and
+%type <integer> integer_or
+%type <integer> integer_trinary
+%type <integer> integer_expr
+
+%%
+
+sourcefile:
+ headers memreserves devicetree
+ {
+ parser_output = build_dt_info($1, $2, $3,
+ guess_boot_cpuid($3));
+ }
+ ;
+
+header:
+ DT_V1 ';'
+ {
+ $$ = DTSF_V1;
+ }
+ | DT_V1 ';' DT_PLUGIN ';'
+ {
+ $$ = DTSF_V1 | DTSF_PLUGIN;
+ }
+ ;
+
+headers:
+ header
+ | header headers
+ {
+ if ($2 != $1)
+ ERROR(&@2, "Header flags don't match earlier ones");
+ $$ = $1;
+ }
+ ;
+
+memreserves:
+ /* empty */
+ {
+ $$ = NULL;
+ }
+ | memreserve memreserves
+ {
+ $$ = chain_reserve_entry($1, $2);
+ }
+ ;
+
+memreserve:
+ DT_MEMRESERVE integer_prim integer_prim ';'
+ {
+ $$ = build_reserve_entry($2, $3);
+ }
+ | DT_LABEL memreserve
+ {
+ add_label(&$2->labels, $1);
+ $$ = $2;
+ }
+ ;
+
+devicetree:
+ '/' nodedef
+ {
+ $$ = name_node($2, "");
+ }
+ | devicetree '/' nodedef
+ {
+ $$ = merge_nodes($1, $3);
+ }
+ | DT_REF nodedef
+ {
+ /*
+ * We rely on the rule being always:
+ * versioninfo plugindecl memreserves devicetree
+ * so $-1 is what we want (plugindecl)
+ */
+ if (!($<flags>-1 & DTSF_PLUGIN))
+ ERROR(&@2, "Label or path %s not found", $1);
+ $$ = add_orphan_node(name_node(build_node(NULL, NULL), ""), $2, $1);
+ }
+ | devicetree DT_LABEL DT_REF nodedef
+ {
+ struct node *target = get_node_by_ref($1, $3);
+
+ if (target) {
+ add_label(&target->labels, $2);
+ merge_nodes(target, $4);
+ } else
+ ERROR(&@3, "Label or path %s not found", $3);
+ $$ = $1;
+ }
+ | devicetree DT_REF nodedef
+ {
+ /*
+ * We rely on the rule being always:
+ * versioninfo plugindecl memreserves devicetree
+ * so $-1 is what we want (plugindecl)
+ */
+ if ($<flags>-1 & DTSF_PLUGIN) {
+ add_orphan_node($1, $3, $2);
+ } else {
+ struct node *target = get_node_by_ref($1, $2);
+
+ if (target)
+ merge_nodes(target, $3);
+ else
+ ERROR(&@2, "Label or path %s not found", $2);
+ }
+ $$ = $1;
+ }
+ | devicetree DT_DEL_NODE DT_REF ';'
+ {
+ struct node *target = get_node_by_ref($1, $3);
+
+ if (target)
+ delete_node(target);
+ else
+ ERROR(&@3, "Label or path %s not found", $3);
+
+
+ $$ = $1;
+ }
+ | devicetree DT_OMIT_NO_REF DT_REF ';'
+ {
+ struct node *target = get_node_by_ref($1, $3);
+
+ if (target)
+ omit_node_if_unused(target);
+ else
+ ERROR(&@3, "Label or path %s not found", $3);
+
+
+ $$ = $1;
+ }
+ ;
+
+nodedef:
+ '{' proplist subnodes '}' ';'
+ {
+ $$ = build_node($2, $3);
+ }
+ ;
+
+proplist:
+ /* empty */
+ {
+ $$ = NULL;
+ }
+ | proplist propdef
+ {
+ $$ = chain_property($2, $1);
+ }
+ ;
+
+propdef:
+ DT_PROPNODENAME '=' propdata ';'
+ {
+ $$ = build_property($1, $3);
+ }
+ | DT_PROPNODENAME ';'
+ {
+ $$ = build_property($1, empty_data);
+ }
+ | DT_DEL_PROP DT_PROPNODENAME ';'
+ {
+ $$ = build_property_delete($2);
+ }
+ | DT_LABEL propdef
+ {
+ add_label(&$2->labels, $1);
+ $$ = $2;
+ }
+ ;
+
+propdata:
+ propdataprefix DT_STRING
+ {
+ $$ = data_merge($1, $2);
+ }
+ | propdataprefix arrayprefix '>'
+ {
+ $$ = data_merge($1, $2.data);
+ }
+ | propdataprefix '[' bytestring ']'
+ {
+ $$ = data_merge($1, $3);
+ }
+ | propdataprefix DT_REF
+ {
+ $$ = data_add_marker($1, REF_PATH, $2);
+ }
+ | propdataprefix DT_INCBIN '(' DT_STRING ',' integer_prim ',' integer_prim ')'
+ {
+ FILE *f = srcfile_relative_open($4.val, NULL);
+ struct data d;
+
+ if ($6 != 0)
+ if (fseek(f, $6, SEEK_SET) != 0)
+ die("Couldn't seek to offset %llu in \"%s\": %s",
+ (unsigned long long)$6, $4.val,
+ strerror(errno));
+
+ d = data_copy_file(f, $8);
+
+ $$ = data_merge($1, d);
+ fclose(f);
+ }
+ | propdataprefix DT_INCBIN '(' DT_STRING ')'
+ {
+ FILE *f = srcfile_relative_open($4.val, NULL);
+ struct data d = empty_data;
+
+ d = data_copy_file(f, -1);
+
+ $$ = data_merge($1, d);
+ fclose(f);
+ }
+ | propdata DT_LABEL
+ {
+ $$ = data_add_marker($1, LABEL, $2);
+ }
+ ;
+
+propdataprefix:
+ /* empty */
+ {
+ $$ = empty_data;
+ }
+ | propdata ','
+ {
+ $$ = $1;
+ }
+ | propdataprefix DT_LABEL
+ {
+ $$ = data_add_marker($1, LABEL, $2);
+ }
+ ;
+
+arrayprefix:
+ DT_BITS DT_LITERAL '<'
+ {
+ unsigned long long bits;
+
+ bits = $2;
+
+ if ((bits != 8) && (bits != 16) &&
+ (bits != 32) && (bits != 64)) {
+ ERROR(&@2, "Array elements must be"
+ " 8, 16, 32 or 64-bits");
+ bits = 32;
+ }
+
+ $$.data = empty_data;
+ $$.bits = bits;
+ }
+ | '<'
+ {
+ $$.data = empty_data;
+ $$.bits = 32;
+ }
+ | arrayprefix integer_prim
+ {
+ if ($1.bits < 64) {
+ uint64_t mask = (1ULL << $1.bits) - 1;
+ /*
+ * Bits above mask must either be all zero
+ * (positive within range of mask) or all one
+ * (negative and sign-extended). The second
+ * condition is true if when we set all bits
+ * within the mask to one (i.e. | in the
+ * mask), all bits are one.
+ */
+ if (($2 > mask) && (($2 | mask) != -1ULL))
+ ERROR(&@2, "Value out of range for"
+ " %d-bit array element", $1.bits);
+ }
+
+ $$.data = data_append_integer($1.data, $2, $1.bits);
+ }
+ | arrayprefix DT_REF
+ {
+ uint64_t val = ~0ULL >> (64 - $1.bits);
+
+ if ($1.bits == 32)
+ $1.data = data_add_marker($1.data,
+ REF_PHANDLE,
+ $2);
+ else
+ ERROR(&@2, "References are only allowed in "
+ "arrays with 32-bit elements.");
+
+ $$.data = data_append_integer($1.data, val, $1.bits);
+ }
+ | arrayprefix DT_LABEL
+ {
+ $$.data = data_add_marker($1.data, LABEL, $2);
+ }
+ ;
+
+integer_prim:
+ DT_LITERAL
+ | DT_CHAR_LITERAL
+ | '(' integer_expr ')'
+ {
+ $$ = $2;
+ }
+ ;
+
+integer_expr:
+ integer_trinary
+ ;
+
+integer_trinary:
+ integer_or
+ | integer_or '?' integer_expr ':' integer_trinary { $$ = $1 ? $3 : $5; }
+ ;
+
+integer_or:
+ integer_and
+ | integer_or DT_OR integer_and { $$ = $1 || $3; }
+ ;
+
+integer_and:
+ integer_bitor
+ | integer_and DT_AND integer_bitor { $$ = $1 && $3; }
+ ;
+
+integer_bitor:
+ integer_bitxor
+ | integer_bitor '|' integer_bitxor { $$ = $1 | $3; }
+ ;
+
+integer_bitxor:
+ integer_bitand
+ | integer_bitxor '^' integer_bitand { $$ = $1 ^ $3; }
+ ;
+
+integer_bitand:
+ integer_eq
+ | integer_bitand '&' integer_eq { $$ = $1 & $3; }
+ ;
+
+integer_eq:
+ integer_rela
+ | integer_eq DT_EQ integer_rela { $$ = $1 == $3; }
+ | integer_eq DT_NE integer_rela { $$ = $1 != $3; }
+ ;
+
+integer_rela:
+ integer_shift
+ | integer_rela '<' integer_shift { $$ = $1 < $3; }
+ | integer_rela '>' integer_shift { $$ = $1 > $3; }
+ | integer_rela DT_LE integer_shift { $$ = $1 <= $3; }
+ | integer_rela DT_GE integer_shift { $$ = $1 >= $3; }
+ ;
+
+integer_shift:
+ integer_shift DT_LSHIFT integer_add { $$ = $1 << $3; }
+ | integer_shift DT_RSHIFT integer_add { $$ = $1 >> $3; }
+ | integer_add
+ ;
+
+integer_add:
+ integer_add '+' integer_mul { $$ = $1 + $3; }
+ | integer_add '-' integer_mul { $$ = $1 - $3; }
+ | integer_mul
+ ;
+
+integer_mul:
+ integer_mul '*' integer_unary { $$ = $1 * $3; }
+ | integer_mul '/' integer_unary
+ {
+ if ($3 != 0) {
+ $$ = $1 / $3;
+ } else {
+ ERROR(&@$, "Division by zero");
+ $$ = 0;
+ }
+ }
+ | integer_mul '%' integer_unary
+ {
+ if ($3 != 0) {
+ $$ = $1 % $3;
+ } else {
+ ERROR(&@$, "Division by zero");
+ $$ = 0;
+ }
+ }
+ | integer_unary
+ ;
+
+integer_unary:
+ integer_prim
+ | '-' integer_unary { $$ = -$2; }
+ | '~' integer_unary { $$ = ~$2; }
+ | '!' integer_unary { $$ = !$2; }
+ ;
+
+bytestring:
+ /* empty */
+ {
+ $$ = empty_data;
+ }
+ | bytestring DT_BYTE
+ {
+ $$ = data_append_byte($1, $2);
+ }
+ | bytestring DT_LABEL
+ {
+ $$ = data_add_marker($1, LABEL, $2);
+ }
+ ;
+
+subnodes:
+ /* empty */
+ {
+ $$ = NULL;
+ }
+ | subnode subnodes
+ {
+ $$ = chain_node($1, $2);
+ }
+ | subnode propdef
+ {
+ ERROR(&@2, "Properties must precede subnodes");
+ YYERROR;
+ }
+ ;
+
+subnode:
+ DT_PROPNODENAME nodedef
+ {
+ $$ = name_node($2, $1);
+ }
+ | DT_DEL_NODE DT_PROPNODENAME ';'
+ {
+ $$ = name_node(build_node_delete(), $2);
+ }
+ | DT_OMIT_NO_REF subnode
+ {
+ $$ = omit_node_if_unused($2);
+ }
+ | DT_LABEL subnode
+ {
+ add_label(&$2->labels, $1);
+ $$ = $2;
+ }
+ ;
+
+%%
+
+void yyerror(char const *s)
+{
+ ERROR(&yylloc, "%s", s);
+}
diff --git a/scripts/dtc/dtc.c b/scripts/dtc/dtc.c
new file mode 100644
index 0000000..c36994e
--- /dev/null
+++ b/scripts/dtc/dtc.c
@@ -0,0 +1,364 @@
+/*
+ * (C) Copyright David Gibson <dwg@au1.ibm.com>, IBM Corporation. 2005.
+ *
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ * USA
+ */
+
+#include <sys/stat.h>
+
+#include "dtc.h"
+#include "srcpos.h"
+
+/*
+ * Command line options
+ */
+int quiet; /* Level of quietness */
+int reservenum; /* Number of memory reservation slots */
+int minsize; /* Minimum blob size */
+int padsize; /* Additional padding to blob */
+int alignsize; /* Additional padding to blob accroding to the alignsize */
+int phandle_format = PHANDLE_EPAPR; /* Use linux,phandle or phandle properties */
+int generate_symbols; /* enable symbols & fixup support */
+int generate_fixups; /* suppress generation of fixups on symbol support */
+int auto_label_aliases; /* auto generate labels -> aliases */
+
+static int is_power_of_2(int x)
+{
+ return (x > 0) && ((x & (x - 1)) == 0);
+}
+
+static void fill_fullpaths(struct node *tree, const char *prefix)
+{
+ struct node *child;
+ const char *unit;
+
+ tree->fullpath = join_path(prefix, tree->name);
+
+ unit = strchr(tree->name, '@');
+ if (unit)
+ tree->basenamelen = unit - tree->name;
+ else
+ tree->basenamelen = strlen(tree->name);
+
+ for_each_child(tree, child)
+ fill_fullpaths(child, tree->fullpath);
+}
+
+/* Usage related data. */
+static const char usage_synopsis[] = "dtc [options] <input file>";
+static const char usage_short_opts[] = "qI:O:o:V:d:R:S:p:a:fb:i:H:sW:E:@Ahv";
+static struct option const usage_long_opts[] = {
+ {"quiet", no_argument, NULL, 'q'},
+ {"in-format", a_argument, NULL, 'I'},
+ {"out", a_argument, NULL, 'o'},
+ {"out-format", a_argument, NULL, 'O'},
+ {"out-version", a_argument, NULL, 'V'},
+ {"out-dependency", a_argument, NULL, 'd'},
+ {"reserve", a_argument, NULL, 'R'},
+ {"space", a_argument, NULL, 'S'},
+ {"pad", a_argument, NULL, 'p'},
+ {"align", a_argument, NULL, 'a'},
+ {"boot-cpu", a_argument, NULL, 'b'},
+ {"force", no_argument, NULL, 'f'},
+ {"include", a_argument, NULL, 'i'},
+ {"sort", no_argument, NULL, 's'},
+ {"phandle", a_argument, NULL, 'H'},
+ {"warning", a_argument, NULL, 'W'},
+ {"error", a_argument, NULL, 'E'},
+ {"symbols", no_argument, NULL, '@'},
+ {"auto-alias", no_argument, NULL, 'A'},
+ {"help", no_argument, NULL, 'h'},
+ {"version", no_argument, NULL, 'v'},
+ {NULL, no_argument, NULL, 0x0},
+};
+static const char * const usage_opts_help[] = {
+ "\n\tQuiet: -q suppress warnings, -qq errors, -qqq all",
+ "\n\tInput formats are:\n"
+ "\t\tdts - device tree source text\n"
+ "\t\tdtb - device tree blob\n"
+ "\t\tfs - /proc/device-tree style directory",
+ "\n\tOutput file",
+ "\n\tOutput formats are:\n"
+ "\t\tdts - device tree source text\n"
+ "\t\tdtb - device tree blob\n"
+ "\t\tasm - assembler source",
+ "\n\tBlob version to produce, defaults to "stringify(DEFAULT_FDT_VERSION)" (for dtb and asm output)",
+ "\n\tOutput dependency file",
+ "\n\tMake space for <number> reserve map entries (for dtb and asm output)",
+ "\n\tMake the blob at least <bytes> long (extra space)",
+ "\n\tAdd padding to the blob of <bytes> long (extra space)",
+ "\n\tMake the blob align to the <bytes> (extra space)",
+ "\n\tSet the physical boot cpu",
+ "\n\tTry to produce output even if the input tree has errors",
+ "\n\tAdd a path to search for include files",
+ "\n\tSort nodes and properties before outputting (useful for comparing trees)",
+ "\n\tValid phandle formats are:\n"
+ "\t\tlegacy - \"linux,phandle\" properties only\n"
+ "\t\tepapr - \"phandle\" properties only\n"
+ "\t\tboth - Both \"linux,phandle\" and \"phandle\" properties",
+ "\n\tEnable/disable warnings (prefix with \"no-\")",
+ "\n\tEnable/disable errors (prefix with \"no-\")",
+ "\n\tEnable generation of symbols",
+ "\n\tEnable auto-alias of labels",
+ "\n\tPrint this help and exit",
+ "\n\tPrint version and exit",
+ NULL,
+};
+
+static const char *guess_type_by_name(const char *fname, const char *fallback)
+{
+ const char *s;
+
+ s = strrchr(fname, '.');
+ if (s == NULL)
+ return fallback;
+ if (!strcasecmp(s, ".dts"))
+ return "dts";
+ if (!strcasecmp(s, ".dtb"))
+ return "dtb";
+ return fallback;
+}
+
+static const char *guess_input_format(const char *fname, const char *fallback)
+{
+ struct stat statbuf;
+ fdt32_t magic;
+ FILE *f;
+
+ if (stat(fname, &statbuf) != 0)
+ return fallback;
+
+ if (S_ISDIR(statbuf.st_mode))
+ return "fs";
+
+ if (!S_ISREG(statbuf.st_mode))
+ return fallback;
+
+ f = fopen(fname, "r");
+ if (f == NULL)
+ return fallback;
+ if (fread(&magic, 4, 1, f) != 1) {
+ fclose(f);
+ return fallback;
+ }
+ fclose(f);
+
+ if (fdt32_to_cpu(magic) == FDT_MAGIC)
+ return "dtb";
+
+ return guess_type_by_name(fname, fallback);
+}
+
+int main(int argc, char *argv[])
+{
+ struct dt_info *dti;
+ const char *inform = NULL;
+ const char *outform = NULL;
+ const char *outname = "-";
+ const char *depname = NULL;
+ bool force = false, sort = false;
+ const char *arg;
+ int opt;
+ FILE *outf = NULL;
+ int outversion = DEFAULT_FDT_VERSION;
+ long long cmdline_boot_cpuid = -1;
+
+ quiet = 0;
+ reservenum = 0;
+ minsize = 0;
+ padsize = 0;
+ alignsize = 0;
+
+ while ((opt = util_getopt_long()) != EOF) {
+ switch (opt) {
+ case 'I':
+ inform = optarg;
+ break;
+ case 'O':
+ outform = optarg;
+ break;
+ case 'o':
+ outname = optarg;
+ break;
+ case 'V':
+ outversion = strtol(optarg, NULL, 0);
+ break;
+ case 'd':
+ depname = optarg;
+ break;
+ case 'R':
+ reservenum = strtol(optarg, NULL, 0);
+ break;
+ case 'S':
+ minsize = strtol(optarg, NULL, 0);
+ break;
+ case 'p':
+ padsize = strtol(optarg, NULL, 0);
+ break;
+ case 'a':
+ alignsize = strtol(optarg, NULL, 0);
+ if (!is_power_of_2(alignsize))
+ die("Invalid argument \"%d\" to -a option\n",
+ alignsize);
+ break;
+ case 'f':
+ force = true;
+ break;
+ case 'q':
+ quiet++;
+ break;
+ case 'b':
+ cmdline_boot_cpuid = strtoll(optarg, NULL, 0);
+ break;
+ case 'i':
+ srcfile_add_search_path(optarg);
+ break;
+ case 'v':
+ util_version();
+ case 'H':
+ if (streq(optarg, "legacy"))
+ phandle_format = PHANDLE_LEGACY;
+ else if (streq(optarg, "epapr"))
+ phandle_format = PHANDLE_EPAPR;
+ else if (streq(optarg, "both"))
+ phandle_format = PHANDLE_BOTH;
+ else
+ die("Invalid argument \"%s\" to -H option\n",
+ optarg);
+ break;
+
+ case 's':
+ sort = true;
+ break;
+
+ case 'W':
+ parse_checks_option(true, false, optarg);
+ break;
+
+ case 'E':
+ parse_checks_option(false, true, optarg);
+ break;
+
+ case '@':
+ generate_symbols = 1;
+ break;
+ case 'A':
+ auto_label_aliases = 1;
+ break;
+
+ case 'h':
+ usage(NULL);
+ default:
+ usage("unknown option");
+ }
+ }
+
+ if (argc > (optind+1))
+ usage("missing files");
+ else if (argc < (optind+1))
+ arg = "-";
+ else
+ arg = argv[optind];
+
+ /* minsize and padsize are mutually exclusive */
+ if (minsize && padsize)
+ die("Can't set both -p and -S\n");
+
+ if (depname) {
+ depfile = fopen(depname, "w");
+ if (!depfile)
+ die("Couldn't open dependency file %s: %s\n", depname,
+ strerror(errno));
+ fprintf(depfile, "%s:", outname);
+ }
+
+ if (inform == NULL)
+ inform = guess_input_format(arg, "dts");
+ if (outform == NULL) {
+ outform = guess_type_by_name(outname, NULL);
+ if (outform == NULL) {
+ if (streq(inform, "dts"))
+ outform = "dtb";
+ else
+ outform = "dts";
+ }
+ }
+ if (streq(inform, "dts"))
+ dti = dt_from_source(arg);
+ else if (streq(inform, "fs"))
+ dti = dt_from_fs(arg);
+ else if(streq(inform, "dtb"))
+ dti = dt_from_blob(arg);
+ else
+ die("Unknown input format \"%s\"\n", inform);
+
+ dti->outname = outname;
+
+ if (depfile) {
+ fputc('\n', depfile);
+ fclose(depfile);
+ }
+
+ if (cmdline_boot_cpuid != -1)
+ dti->boot_cpuid_phys = cmdline_boot_cpuid;
+
+ fill_fullpaths(dti->dt, "");
+
+ /* on a plugin, generate by default */
+ if (dti->dtsflags & DTSF_PLUGIN) {
+ generate_fixups = 1;
+ }
+
+ process_checks(force, dti);
+
+ if (auto_label_aliases)
+ generate_label_tree(dti, "aliases", false);
+
+ if (generate_symbols)
+ generate_label_tree(dti, "__symbols__", true);
+
+ if (generate_fixups) {
+ generate_fixups_tree(dti, "__fixups__");
+ generate_local_fixups_tree(dti, "__local_fixups__");
+ }
+
+ if (sort)
+ sort_tree(dti);
+
+ if (streq(outname, "-")) {
+ outf = stdout;
+ } else {
+ outf = fopen(outname, "wb");
+ if (! outf)
+ die("Couldn't open output file %s: %s\n",
+ outname, strerror(errno));
+ }
+
+ if (streq(outform, "dts")) {
+ dt_to_source(outf, dti);
+ } else if (streq(outform, "dtb")) {
+ dt_to_blob(outf, dti, outversion);
+ } else if (streq(outform, "asm")) {
+ dt_to_asm(outf, dti, outversion);
+ } else if (streq(outform, "null")) {
+ /* do nothing */
+ } else {
+ die("Unknown output format \"%s\"\n", outform);
+ }
+
+ exit(0);
+}
diff --git a/scripts/dtc/dtc.h b/scripts/dtc/dtc.h
new file mode 100644
index 0000000..6d66770
--- /dev/null
+++ b/scripts/dtc/dtc.h
@@ -0,0 +1,297 @@
+#ifndef DTC_H
+#define DTC_H
+
+/*
+ * (C) Copyright David Gibson <dwg@au1.ibm.com>, IBM Corporation. 2005.
+ *
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ * USA
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <stdbool.h>
+#include <stdarg.h>
+#include <assert.h>
+#include <ctype.h>
+#include <errno.h>
+#include <unistd.h>
+#include <inttypes.h>
+
+#include <libfdt_env.h>
+#include <fdt.h>
+
+#include "util.h"
+
+#ifdef DEBUG
+#define debug(...) printf(__VA_ARGS__)
+#else
+#define debug(...)
+#endif
+
+#define DEFAULT_FDT_VERSION 17
+
+/*
+ * Command line options
+ */
+extern int quiet; /* Level of quietness */
+extern int reservenum; /* Number of memory reservation slots */
+extern int minsize; /* Minimum blob size */
+extern int padsize; /* Additional padding to blob */
+extern int alignsize; /* Additional padding to blob accroding to the alignsize */
+extern int phandle_format; /* Use linux,phandle or phandle properties */
+extern int generate_symbols; /* generate symbols for nodes with labels */
+extern int generate_fixups; /* generate fixups */
+extern int auto_label_aliases; /* auto generate labels -> aliases */
+
+#define PHANDLE_LEGACY 0x1
+#define PHANDLE_EPAPR 0x2
+#define PHANDLE_BOTH 0x3
+
+typedef uint32_t cell_t;
+
+
+#define streq(a, b) (strcmp((a), (b)) == 0)
+#define strstarts(s, prefix) (strncmp((s), (prefix), strlen(prefix)) == 0)
+#define strprefixeq(a, n, b) (strlen(b) == (n) && (memcmp(a, b, n) == 0))
+
+#define ALIGN(x, a) (((x) + (a) - 1) & ~((a) - 1))
+
+/* Data blobs */
+enum markertype {
+ REF_PHANDLE,
+ REF_PATH,
+ LABEL,
+};
+
+struct marker {
+ enum markertype type;
+ int offset;
+ char *ref;
+ struct marker *next;
+};
+
+struct data {
+ int len;
+ char *val;
+ struct marker *markers;
+};
+
+
+#define empty_data ((struct data){ 0 /* all .members = 0 or NULL */ })
+
+#define for_each_marker(m) \
+ for (; (m); (m) = (m)->next)
+#define for_each_marker_of_type(m, t) \
+ for_each_marker(m) \
+ if ((m)->type == (t))
+
+void data_free(struct data d);
+
+struct data data_grow_for(struct data d, int xlen);
+
+struct data data_copy_mem(const char *mem, int len);
+struct data data_copy_escape_string(const char *s, int len);
+struct data data_copy_file(FILE *f, size_t len);
+
+struct data data_append_data(struct data d, const void *p, int len);
+struct data data_insert_at_marker(struct data d, struct marker *m,
+ const void *p, int len);
+struct data data_merge(struct data d1, struct data d2);
+struct data data_append_cell(struct data d, cell_t word);
+struct data data_append_integer(struct data d, uint64_t word, int bits);
+struct data data_append_re(struct data d, uint64_t address, uint64_t size);
+struct data data_append_addr(struct data d, uint64_t addr);
+struct data data_append_byte(struct data d, uint8_t byte);
+struct data data_append_zeroes(struct data d, int len);
+struct data data_append_align(struct data d, int align);
+
+struct data data_add_marker(struct data d, enum markertype type, char *ref);
+
+bool data_is_one_string(struct data d);
+
+/* DT constraints */
+
+#define MAX_PROPNAME_LEN 31
+#define MAX_NODENAME_LEN 31
+
+/* Live trees */
+struct label {
+ bool deleted;
+ char *label;
+ struct label *next;
+};
+
+struct bus_type {
+ const char *name;
+};
+
+struct property {
+ bool deleted;
+ char *name;
+ struct data val;
+
+ struct property *next;
+
+ struct label *labels;
+};
+
+struct node {
+ bool deleted;
+ char *name;
+ struct property *proplist;
+ struct node *children;
+
+ struct node *parent;
+ struct node *next_sibling;
+
+ char *fullpath;
+ int basenamelen;
+
+ cell_t phandle;
+ int addr_cells, size_cells;
+
+ struct label *labels;
+ const struct bus_type *bus;
+
+ bool omit_if_unused, is_referenced;
+};
+
+#define for_each_label_withdel(l0, l) \
+ for ((l) = (l0); (l); (l) = (l)->next)
+
+#define for_each_label(l0, l) \
+ for_each_label_withdel(l0, l) \
+ if (!(l)->deleted)
+
+#define for_each_property_withdel(n, p) \
+ for ((p) = (n)->proplist; (p); (p) = (p)->next)
+
+#define for_each_property(n, p) \
+ for_each_property_withdel(n, p) \
+ if (!(p)->deleted)
+
+#define for_each_child_withdel(n, c) \
+ for ((c) = (n)->children; (c); (c) = (c)->next_sibling)
+
+#define for_each_child(n, c) \
+ for_each_child_withdel(n, c) \
+ if (!(c)->deleted)
+
+void add_label(struct label **labels, char *label);
+void delete_labels(struct label **labels);
+
+struct property *build_property(char *name, struct data val);
+struct property *build_property_delete(char *name);
+struct property *chain_property(struct property *first, struct property *list);
+struct property *reverse_properties(struct property *first);
+
+struct node *build_node(struct property *proplist, struct node *children);
+struct node *build_node_delete(void);
+struct node *name_node(struct node *node, char *name);
+struct node *omit_node_if_unused(struct node *node);
+struct node *reference_node(struct node *node);
+struct node *chain_node(struct node *first, struct node *list);
+struct node *merge_nodes(struct node *old_node, struct node *new_node);
+struct node *add_orphan_node(struct node *old_node, struct node *new_node, char *ref);
+
+void add_property(struct node *node, struct property *prop);
+void delete_property_by_name(struct node *node, char *name);
+void delete_property(struct property *prop);
+void add_child(struct node *parent, struct node *child);
+void delete_node_by_name(struct node *parent, char *name);
+void delete_node(struct node *node);
+void append_to_property(struct node *node,
+ char *name, const void *data, int len);
+
+const char *get_unitname(struct node *node);
+struct property *get_property(struct node *node, const char *propname);
+cell_t propval_cell(struct property *prop);
+cell_t propval_cell_n(struct property *prop, int n);
+struct property *get_property_by_label(struct node *tree, const char *label,
+ struct node **node);
+struct marker *get_marker_label(struct node *tree, const char *label,
+ struct node **node, struct property **prop);
+struct node *get_subnode(struct node *node, const char *nodename);
+struct node *get_node_by_path(struct node *tree, const char *path);
+struct node *get_node_by_label(struct node *tree, const char *label);
+struct node *get_node_by_phandle(struct node *tree, cell_t phandle);
+struct node *get_node_by_ref(struct node *tree, const char *ref);
+cell_t get_node_phandle(struct node *root, struct node *node);
+
+uint32_t guess_boot_cpuid(struct node *tree);
+
+/* Boot info (tree plus memreserve information */
+
+struct reserve_info {
+ uint64_t address, size;
+
+ struct reserve_info *next;
+
+ struct label *labels;
+};
+
+struct reserve_info *build_reserve_entry(uint64_t start, uint64_t len);
+struct reserve_info *chain_reserve_entry(struct reserve_info *first,
+ struct reserve_info *list);
+struct reserve_info *add_reserve_entry(struct reserve_info *list,
+ struct reserve_info *new);
+
+
+struct dt_info {
+ unsigned int dtsflags;
+ struct reserve_info *reservelist;
+ uint32_t boot_cpuid_phys;
+ struct node *dt; /* the device tree */
+ const char *outname; /* filename being written to, "-" for stdout */
+};
+
+/* DTS version flags definitions */
+#define DTSF_V1 0x0001 /* /dts-v1/ */
+#define DTSF_PLUGIN 0x0002 /* /plugin/ */
+
+struct dt_info *build_dt_info(unsigned int dtsflags,
+ struct reserve_info *reservelist,
+ struct node *tree, uint32_t boot_cpuid_phys);
+void sort_tree(struct dt_info *dti);
+void generate_label_tree(struct dt_info *dti, char *name, bool allocph);
+void generate_fixups_tree(struct dt_info *dti, char *name);
+void generate_local_fixups_tree(struct dt_info *dti, char *name);
+
+/* Checks */
+
+void parse_checks_option(bool warn, bool error, const char *arg);
+void process_checks(bool force, struct dt_info *dti);
+
+/* Flattened trees */
+
+void dt_to_blob(FILE *f, struct dt_info *dti, int version);
+void dt_to_asm(FILE *f, struct dt_info *dti, int version);
+
+struct dt_info *dt_from_blob(const char *fname);
+
+/* Tree source */
+
+void dt_to_source(FILE *f, struct dt_info *dti);
+struct dt_info *dt_from_source(const char *f);
+
+/* FS trees */
+
+struct dt_info *dt_from_fs(const char *dirname);
+
+#endif /* DTC_H */
diff --git a/scripts/dtc/dtx_diff b/scripts/dtc/dtx_diff
new file mode 100755
index 0000000..8c4fbad
--- /dev/null
+++ b/scripts/dtc/dtx_diff
@@ -0,0 +1,345 @@
+#! /bin/bash
+
+# Copyright (C) 2015 Frank Rowand
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; version 2 of the License.
+
+
+usage() {
+
+ # use spaces instead of tabs in the usage message
+ cat >&2 <<eod
+
+Usage:
+
+ `basename $0` DTx
+ decompile DTx
+
+ `basename $0` DTx_1 DTx_2
+ diff DTx_1 and DTx_2
+
+
+ -f print full dts in diff (--unified=99999)
+ -h synonym for --help
+ -help synonym for --help
+ --help print this message and exit
+ -s SRCTREE linux kernel source tree is at path SRCTREE
+ (default is current directory)
+ -S linux kernel source tree is at root of current git repo
+ -u unsorted, do not sort DTx
+
+
+Each DTx is processed by the dtc compiler to produce a sorted dts source
+file. If DTx is a dts source file then it is pre-processed in the same
+manner as done for the compile of the dts source file in the Linux kernel
+build system ('#include' and '/include/' directives are processed).
+
+If two DTx are provided, the resulting dts source files are diffed.
+
+If DTx is a directory, it is treated as a DT subtree, such as
+ /proc/device-tree.
+
+If DTx contains the binary blob magic value in the first four bytes,
+ it is treated as a binary blob (aka .dtb or FDT).
+
+Otherwise DTx is treated as a dts source file (aka .dts).
+
+ If this script is not run from the root of the linux source tree,
+ and DTx utilizes '#include' or '/include/' then the path of the
+ linux source tree can be provided by '-s SRCTREE' or '-S' so that
+ include paths will be set properly.
+
+ The shell variable \${ARCH} must provide the architecture containing
+ the dts source file for include paths to be set properly for '#include'
+ or '/include/' to be processed.
+
+ If DTx_1 and DTx_2 are in different architectures, then this script
+ may not work since \${ARCH} is part of the include path. Two possible
+ workarounds:
+
+ `basename $0` \\
+ <(ARCH=arch_of_dtx_1 `basename $0` DTx_1) \\
+ <(ARCH=arch_of_dtx_2 `basename $0` DTx_2)
+
+ `basename $0` ARCH=arch_of_dtx_1 DTx_1 >tmp_dtx_1.dts
+ `basename $0` ARCH=arch_of_dtx_2 DTx_2 >tmp_dtx_2.dts
+ `basename $0` tmp_dtx_1.dts tmp_dtx_2.dts
+ rm tmp_dtx_1.dts tmp_dtx_2.dts
+
+ If DTx_1 and DTx_2 are in different directories, then this script will
+ add the path of DTx_1 and DTx_2 to the include paths. If DTx_2 includes
+ a local file that exists in both the path of DTx_1 and DTx_2 then the
+ file in the path of DTx_1 will incorrectly be included. Possible
+ workaround:
+
+ `basename $0` DTx_1 >tmp_dtx_1.dts
+ `basename $0` DTx_2 >tmp_dtx_2.dts
+ `basename $0` tmp_dtx_1.dts tmp_dtx_2.dts
+ rm tmp_dtx_1.dts tmp_dtx_2.dts
+
+eod
+}
+
+
+compile_to_dts() {
+
+ dtx="$1"
+ dtc_include="$2"
+
+ if [ -d "${dtx}" ] ; then
+
+ # ----- input is file tree
+
+ if ( ! ${DTC} -I fs ${dtx} ) ; then
+ exit 3
+ fi
+
+ elif [ -f "${dtx}" ] && [ -r "${dtx}" ] ; then
+
+ magic=`hexdump -n 4 -e '/1 "%02x"' ${dtx}`
+ if [ "${magic}" = "d00dfeed" ] ; then
+
+ # ----- input is FDT (binary blob)
+
+ if ( ! ${DTC} -I dtb ${dtx} ) ; then
+ exit 3
+ fi
+
+ return
+
+ fi
+
+ # ----- input is DTS (source)
+
+ if ( cpp ${cpp_flags} -x assembler-with-cpp ${dtx} \
+ | ${DTC} ${dtc_include} -I dts ) ; then
+ return
+ fi
+
+ echo "" >&2
+ echo "Possible hints to resolve the above error:" >&2
+ echo " (hints might not fix the problem)" >&2
+
+ hint_given=0
+
+ if [ "${ARCH}" = "" ] ; then
+ hint_given=1
+ echo "" >&2
+ echo " shell variable \$ARCH not set" >&2
+ fi
+
+ dtx_arch=`echo "/${dtx}" | sed -e 's|.*/arch/||' -e 's|/.*||'`
+
+ if [ "${dtx_arch}" != "" -a "${dtx_arch}" != "${ARCH}" ] ; then
+ hint_given=1
+ echo "" >&2
+ echo " architecture ${dtx_arch} is in file path," >&2
+ echo " but does not match shell variable \$ARCH" >&2
+ echo " >>\$ARCH<< is: >>${ARCH}<<" >&2
+ fi
+
+ if [ ! -d ${srctree}/arch/${ARCH} ] ; then
+ hint_given=1
+ echo "" >&2
+ echo " ${srctree}/arch/${ARCH}/ does not exist" >&2
+ echo " Is \$ARCH='${ARCH}' correct?" >&2
+ echo " Possible fix: use '-s' option" >&2
+
+ git_root=`git rev-parse --show-toplevel 2>/dev/null`
+ if [ -d ${git_root}/arch/ ] ; then
+ echo " Possible fix: use '-S' option" >&2
+ fi
+ fi
+
+ if [ $hint_given = 0 ] ; then
+ echo "" >&2
+ echo " No hints available." >&2
+ fi
+
+ echo "" >&2
+
+ exit 3
+
+ else
+ echo "" >&2
+ echo "ERROR: ${dtx} does not exist or is not readable" >&2
+ echo "" >&2
+ exit 2
+ fi
+
+}
+
+
+# ----- start of script
+
+cmd_diff=0
+diff_flags="-u"
+dtx_file_1=""
+dtx_file_2=""
+dtc_sort="-s"
+help=0
+srctree=""
+
+
+while [ $# -gt 0 ] ; do
+
+ case $1 in
+
+ -f )
+ diff_flags="--unified=999999"
+ shift
+ ;;
+
+ -h | -help | --help )
+ help=1
+ shift
+ ;;
+
+ -s )
+ srctree="$2"
+ shift 2
+ ;;
+
+ -S )
+ git_root=`git rev-parse --show-toplevel 2>/dev/null`
+ srctree="${git_root}"
+ shift
+ ;;
+
+ -u )
+ dtc_sort=""
+ shift
+ ;;
+
+ *)
+ if [ "${dtx_file_1}" = "" ] ; then
+ dtx_file_1="$1"
+ elif [ "${dtx_file_2}" = "" ] ; then
+ dtx_file_2="$1"
+ else
+ echo "" >&2
+ echo "ERROR: Unexpected parameter: $1" >&2
+ echo "" >&2
+ exit 2
+ fi
+ shift
+ ;;
+
+ esac
+
+done
+
+if [ "${srctree}" = "" ] ; then
+ srctree="."
+fi
+
+if [ "${dtx_file_2}" != "" ]; then
+ cmd_diff=1
+fi
+
+if (( ${help} )) ; then
+ usage
+ exit 1
+fi
+
+# this must follow check for ${help}
+if [ "${dtx_file_1}" = "" ]; then
+ echo "" >&2
+ echo "ERROR: parameter DTx required" >&2
+ echo "" >&2
+ exit 2
+fi
+
+
+# ----- prefer dtc from linux kernel, allow fallback to dtc in $PATH
+
+if [ "${KBUILD_OUTPUT:0:2}" = ".." ] ; then
+ __KBUILD_OUTPUT="${srctree}/${KBUILD_OUTPUT}"
+elif [ "${KBUILD_OUTPUT}" = "" ] ; then
+ __KBUILD_OUTPUT="."
+else
+ __KBUILD_OUTPUT="${KBUILD_OUTPUT}"
+fi
+
+DTC="${__KBUILD_OUTPUT}/scripts/dtc/dtc"
+
+if [ ! -x ${DTC} ] ; then
+ __DTC="dtc"
+ if grep -q "^CONFIG_DTC=y" ${__KBUILD_OUTPUT}/.config 2>/dev/null; then
+ make_command='
+ make scripts'
+ else
+ make_command='
+ Enable CONFIG_DTC in the kernel configuration
+ make scripts'
+ fi
+ if ( ! which ${__DTC} >/dev/null ) ; then
+
+ # use spaces instead of tabs in the error message
+ cat >&2 <<eod
+
+ERROR: unable to find a 'dtc' program
+
+ Preferred 'dtc' (built from Linux kernel source tree) was not found or
+ is not executable.
+
+ 'dtc' is: ${DTC}
+
+ If it does not exist, create it from the root of the Linux source tree:
+${make_command}
+
+ If not at the root of the Linux kernel source tree -s SRCTREE or -S
+ may need to be specified to find 'dtc'.
+
+ If 'O=\${dir}' is specified in your Linux builds, this script requires
+ 'export KBUILD_OUTPUT=\${dir}' or add \${dir}/scripts/dtc to \$PATH
+ before running.
+
+ If \${KBUILD_OUTPUT} is a relative path, then '-s SRCDIR', -S, or run
+ this script from the root of the Linux kernel source tree is required.
+
+ Fallback '${__DTC}' was also not in \${PATH} or is not executable.
+
+eod
+ exit 2
+ fi
+ DTC=${__DTC}
+fi
+
+
+# ----- cpp and dtc flags same as for linux source tree build of .dtb files,
+# plus directories of the dtx file(s)
+
+dtx_path_1_dtc_include="-i `dirname ${dtx_file_1}`"
+
+dtx_path_2_dtc_include=""
+if (( ${cmd_diff} )) ; then
+ dtx_path_2_dtc_include="-i `dirname ${dtx_file_2}`"
+fi
+
+cpp_flags="\
+ -nostdinc \
+ -I${srctree}/scripts/dtc/include-prefixes \
+ -undef -D__DTS__"
+
+DTC="\
+ ${DTC} \
+ -i ${srctree}/scripts/dtc/include-prefixes \
+ -O dts -qq -f ${dtc_sort} -o -"
+
+
+# ----- do the diff or decompile
+
+if (( ${cmd_diff} )) ; then
+
+ diff ${diff_flags} --label "${dtx_file_1}" --label "${dtx_file_2}" \
+ <(compile_to_dts "${dtx_file_1}" "${dtx_path_1_dtc_include}") \
+ <(compile_to_dts "${dtx_file_2}" "${dtx_path_2_dtc_include}")
+
+else
+
+ compile_to_dts "${dtx_file_1}" "${dtx_path_1_dtc_include}"
+
+fi
diff --git a/scripts/dtc/fdtdump.c b/scripts/dtc/fdtdump.c
new file mode 100644
index 0000000..7d460a5
--- /dev/null
+++ b/scripts/dtc/fdtdump.c
@@ -0,0 +1,163 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * fdtdump.c - Contributed by Pantelis Antoniou <pantelis.antoniou AT gmail.com>
+ */
+
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+
+#include <fdt.h>
+#include <libfdt_env.h>
+
+#include "util.h"
+
+#define ALIGN(x, a) (((x) + ((a) - 1)) & ~((a) - 1))
+#define PALIGN(p, a) ((void *)(ALIGN((unsigned long)(p), (a))))
+#define GET_CELL(p) (p += 4, *((const uint32_t *)(p-4)))
+
+static void print_data(const char *data, int len)
+{
+ int i;
+ const char *p = data;
+
+ /* no data, don't print */
+ if (len == 0)
+ return;
+
+ if (util_is_printable_string(data, len)) {
+ printf(" = \"%s\"", (const char *)data);
+ } else if ((len % 4) == 0) {
+ printf(" = <");
+ for (i = 0; i < len; i += 4)
+ printf("0x%08x%s", fdt32_to_cpu(GET_CELL(p)),
+ i < (len - 4) ? " " : "");
+ printf(">");
+ } else {
+ printf(" = [");
+ for (i = 0; i < len; i++)
+ printf("%02x%s", *p++, i < len - 1 ? " " : "");
+ printf("]");
+ }
+}
+
+static void dump_blob(void *blob)
+{
+ struct fdt_header *bph = blob;
+ uint32_t off_mem_rsvmap = fdt32_to_cpu(bph->off_mem_rsvmap);
+ uint32_t off_dt = fdt32_to_cpu(bph->off_dt_struct);
+ uint32_t off_str = fdt32_to_cpu(bph->off_dt_strings);
+ struct fdt_reserve_entry *p_rsvmap =
+ (struct fdt_reserve_entry *)((char *)blob + off_mem_rsvmap);
+ const char *p_struct = (const char *)blob + off_dt;
+ const char *p_strings = (const char *)blob + off_str;
+ uint32_t version = fdt32_to_cpu(bph->version);
+ uint32_t totalsize = fdt32_to_cpu(bph->totalsize);
+ uint32_t tag;
+ const char *p, *s, *t;
+ int depth, sz, shift;
+ int i;
+ uint64_t addr, size;
+
+ depth = 0;
+ shift = 4;
+
+ printf("/dts-v1/;\n");
+ printf("// magic:\t\t0x%x\n", fdt32_to_cpu(bph->magic));
+ printf("// totalsize:\t\t0x%x (%d)\n", totalsize, totalsize);
+ printf("// off_dt_struct:\t0x%x\n", off_dt);
+ printf("// off_dt_strings:\t0x%x\n", off_str);
+ printf("// off_mem_rsvmap:\t0x%x\n", off_mem_rsvmap);
+ printf("// version:\t\t%d\n", version);
+ printf("// last_comp_version:\t%d\n",
+ fdt32_to_cpu(bph->last_comp_version));
+ if (version >= 2)
+ printf("// boot_cpuid_phys:\t0x%x\n",
+ fdt32_to_cpu(bph->boot_cpuid_phys));
+
+ if (version >= 3)
+ printf("// size_dt_strings:\t0x%x\n",
+ fdt32_to_cpu(bph->size_dt_strings));
+ if (version >= 17)
+ printf("// size_dt_struct:\t0x%x\n",
+ fdt32_to_cpu(bph->size_dt_struct));
+ printf("\n");
+
+ for (i = 0; ; i++) {
+ addr = fdt64_to_cpu(p_rsvmap[i].address);
+ size = fdt64_to_cpu(p_rsvmap[i].size);
+ if (addr == 0 && size == 0)
+ break;
+
+ printf("/memreserve/ %llx %llx;\n",
+ (unsigned long long)addr, (unsigned long long)size);
+ }
+
+ p = p_struct;
+ while ((tag = fdt32_to_cpu(GET_CELL(p))) != FDT_END) {
+
+ /* printf("tag: 0x%08x (%d)\n", tag, p - p_struct); */
+
+ if (tag == FDT_BEGIN_NODE) {
+ s = p;
+ p = PALIGN(p + strlen(s) + 1, 4);
+
+ if (*s == '\0')
+ s = "/";
+
+ printf("%*s%s {\n", depth * shift, "", s);
+
+ depth++;
+ continue;
+ }
+
+ if (tag == FDT_END_NODE) {
+ depth--;
+
+ printf("%*s};\n", depth * shift, "");
+ continue;
+ }
+
+ if (tag == FDT_NOP) {
+ printf("%*s// [NOP]\n", depth * shift, "");
+ continue;
+ }
+
+ if (tag != FDT_PROP) {
+ fprintf(stderr, "%*s ** Unknown tag 0x%08x\n", depth * shift, "", tag);
+ break;
+ }
+ sz = fdt32_to_cpu(GET_CELL(p));
+ s = p_strings + fdt32_to_cpu(GET_CELL(p));
+ if (version < 16 && sz >= 8)
+ p = PALIGN(p, 8);
+ t = p;
+
+ p = PALIGN(p + sz, 4);
+
+ printf("%*s%s", depth * shift, "", s);
+ print_data(t, sz);
+ printf(";\n");
+ }
+}
+
+
+int main(int argc, char *argv[])
+{
+ char *buf;
+
+ if (argc < 2) {
+ fprintf(stderr, "supply input filename\n");
+ return 5;
+ }
+
+ buf = utilfdt_read(argv[1]);
+ if (buf)
+ dump_blob(buf);
+ else
+ return 10;
+
+ return 0;
+}
diff --git a/scripts/dtc/fdtget.c b/scripts/dtc/fdtget.c
new file mode 100644
index 0000000..c2fbab2
--- /dev/null
+++ b/scripts/dtc/fdtget.c
@@ -0,0 +1,366 @@
+/*
+ * Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
+ *
+ * Portions from U-Boot cmd_fdt.c (C) Copyright 2007
+ * Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com
+ * Based on code written by:
+ * Pantelis Antoniou <pantelis.antoniou@gmail.com> and
+ * Matthew McClintock <msm@freescale.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <assert.h>
+#include <ctype.h>
+#include <getopt.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <libfdt.h>
+
+#include "util.h"
+
+enum display_mode {
+ MODE_SHOW_VALUE, /* show values for node properties */
+ MODE_LIST_PROPS, /* list the properties for a node */
+ MODE_LIST_SUBNODES, /* list the subnodes of a node */
+};
+
+/* Holds information which controls our output and options */
+struct display_info {
+ int type; /* data type (s/i/u/x or 0 for default) */
+ int size; /* data size (1/2/4) */
+ enum display_mode mode; /* display mode that we are using */
+ const char *default_val; /* default value if node/property not found */
+};
+
+static void report_error(const char *where, int err)
+{
+ fprintf(stderr, "Error at '%s': %s\n", where, fdt_strerror(err));
+}
+
+/**
+ * Displays data of a given length according to selected options
+ *
+ * If a specific data type is provided in disp, then this is used. Otherwise
+ * we try to guess the data type / size from the contents.
+ *
+ * @param disp Display information / options
+ * @param data Data to display
+ * @param len Maximum length of buffer
+ * @return 0 if ok, -1 if data does not match format
+ */
+static int show_data(struct display_info *disp, const char *data, int len)
+{
+ int i, size;
+ const uint8_t *p = (const uint8_t *)data;
+ const char *s;
+ int value;
+ int is_string;
+ char fmt[3];
+
+ /* no data, don't print */
+ if (len == 0)
+ return 0;
+
+ is_string = (disp->type) == 's' ||
+ (!disp->type && util_is_printable_string(data, len));
+ if (is_string) {
+ if (data[len - 1] != '\0') {
+ fprintf(stderr, "Unterminated string\n");
+ return -1;
+ }
+ for (s = data; s - data < len; s += strlen(s) + 1) {
+ if (s != data)
+ printf(" ");
+ printf("%s", (const char *)s);
+ }
+ return 0;
+ }
+ size = disp->size;
+ if (size == -1) {
+ size = (len % 4) == 0 ? 4 : 1;
+ } else if (len % size) {
+ fprintf(stderr, "Property length must be a multiple of "
+ "selected data size\n");
+ return -1;
+ }
+ fmt[0] = '%';
+ fmt[1] = disp->type ? disp->type : 'd';
+ fmt[2] = '\0';
+ for (i = 0; i < len; i += size, p += size) {
+ if (i)
+ printf(" ");
+ value = size == 4 ? fdt32_to_cpu(*(const uint32_t *)p) :
+ size == 2 ? (*p << 8) | p[1] : *p;
+ printf(fmt, value);
+ }
+ return 0;
+}
+
+/**
+ * List all properties in a node, one per line.
+ *
+ * @param blob FDT blob
+ * @param node Node to display
+ * @return 0 if ok, or FDT_ERR... if not.
+ */
+static int list_properties(const void *blob, int node)
+{
+ const struct fdt_property *data;
+ const char *name;
+ int prop;
+
+ prop = fdt_first_property_offset(blob, node);
+ do {
+ /* Stop silently when there are no more properties */
+ if (prop < 0)
+ return prop == -FDT_ERR_NOTFOUND ? 0 : prop;
+ data = fdt_get_property_by_offset(blob, prop, NULL);
+ name = fdt_string(blob, fdt32_to_cpu(data->nameoff));
+ if (name)
+ puts(name);
+ prop = fdt_next_property_offset(blob, prop);
+ } while (1);
+}
+
+#define MAX_LEVEL 32 /* how deeply nested we will go */
+
+/**
+ * List all subnodes in a node, one per line
+ *
+ * @param blob FDT blob
+ * @param node Node to display
+ * @return 0 if ok, or FDT_ERR... if not.
+ */
+static int list_subnodes(const void *blob, int node)
+{
+ int nextoffset; /* next node offset from libfdt */
+ uint32_t tag; /* current tag */
+ int level = 0; /* keep track of nesting level */
+ const char *pathp;
+ int depth = 1; /* the assumed depth of this node */
+
+ while (level >= 0) {
+ tag = fdt_next_tag(blob, node, &nextoffset);
+ switch (tag) {
+ case FDT_BEGIN_NODE:
+ pathp = fdt_get_name(blob, node, NULL);
+ if (level <= depth) {
+ if (pathp == NULL)
+ pathp = "/* NULL pointer error */";
+ if (*pathp == '\0')
+ pathp = "/"; /* root is nameless */
+ if (level == 1)
+ puts(pathp);
+ }
+ level++;
+ if (level >= MAX_LEVEL) {
+ printf("Nested too deep, aborting.\n");
+ return 1;
+ }
+ break;
+ case FDT_END_NODE:
+ level--;
+ if (level == 0)
+ level = -1; /* exit the loop */
+ break;
+ case FDT_END:
+ return 1;
+ case FDT_PROP:
+ break;
+ default:
+ if (level <= depth)
+ printf("Unknown tag 0x%08X\n", tag);
+ return 1;
+ }
+ node = nextoffset;
+ }
+ return 0;
+}
+
+/**
+ * Show the data for a given node (and perhaps property) according to the
+ * display option provided.
+ *
+ * @param blob FDT blob
+ * @param disp Display information / options
+ * @param node Node to display
+ * @param property Name of property to display, or NULL if none
+ * @return 0 if ok, -ve on error
+ */
+static int show_data_for_item(const void *blob, struct display_info *disp,
+ int node, const char *property)
+{
+ const void *value = NULL;
+ int len, err = 0;
+
+ switch (disp->mode) {
+ case MODE_LIST_PROPS:
+ err = list_properties(blob, node);
+ break;
+
+ case MODE_LIST_SUBNODES:
+ err = list_subnodes(blob, node);
+ break;
+
+ default:
+ assert(property);
+ value = fdt_getprop(blob, node, property, &len);
+ if (value) {
+ if (show_data(disp, value, len))
+ err = -1;
+ else
+ printf("\n");
+ } else if (disp->default_val) {
+ puts(disp->default_val);
+ } else {
+ report_error(property, len);
+ err = -1;
+ }
+ break;
+ }
+
+ return err;
+}
+
+/**
+ * Run the main fdtget operation, given a filename and valid arguments
+ *
+ * @param disp Display information / options
+ * @param filename Filename of blob file
+ * @param arg List of arguments to process
+ * @param arg_count Number of arguments
+ * @param return 0 if ok, -ve on error
+ */
+static int do_fdtget(struct display_info *disp, const char *filename,
+ char **arg, int arg_count, int args_per_step)
+{
+ char *blob;
+ const char *prop;
+ int i, node;
+
+ blob = utilfdt_read(filename);
+ if (!blob)
+ return -1;
+
+ for (i = 0; i + args_per_step <= arg_count; i += args_per_step) {
+ node = fdt_path_offset(blob, arg[i]);
+ if (node < 0) {
+ if (disp->default_val) {
+ puts(disp->default_val);
+ continue;
+ } else {
+ report_error(arg[i], node);
+ return -1;
+ }
+ }
+ prop = args_per_step == 1 ? NULL : arg[i + 1];
+
+ if (show_data_for_item(blob, disp, node, prop))
+ return -1;
+ }
+ return 0;
+}
+
+static const char *usage_msg =
+ "fdtget - read values from device tree\n"
+ "\n"
+ "Each value is printed on a new line.\n\n"
+ "Usage:\n"
+ " fdtget <options> <dt file> [<node> <property>]...\n"
+ " fdtget -p <options> <dt file> [<node> ]...\n"
+ "Options:\n"
+ "\t-t <type>\tType of data\n"
+ "\t-p\t\tList properties for each node\n"
+ "\t-l\t\tList subnodes for each node\n"
+ "\t-d\t\tDefault value to display when the property is "
+ "missing\n"
+ "\t-h\t\tPrint this help\n\n"
+ USAGE_TYPE_MSG;
+
+static void usage(const char *msg)
+{
+ if (msg)
+ fprintf(stderr, "Error: %s\n\n", msg);
+
+ fprintf(stderr, "%s", usage_msg);
+ exit(2);
+}
+
+int main(int argc, char *argv[])
+{
+ char *filename = NULL;
+ struct display_info disp;
+ int args_per_step = 2;
+
+ /* set defaults */
+ memset(&disp, '\0', sizeof(disp));
+ disp.size = -1;
+ disp.mode = MODE_SHOW_VALUE;
+ for (;;) {
+ int c = getopt(argc, argv, "d:hlpt:");
+ if (c == -1)
+ break;
+
+ switch (c) {
+ case 'h':
+ case '?':
+ usage(NULL);
+
+ case 't':
+ if (utilfdt_decode_type(optarg, &disp.type,
+ &disp.size))
+ usage("Invalid type string");
+ break;
+
+ case 'p':
+ disp.mode = MODE_LIST_PROPS;
+ args_per_step = 1;
+ break;
+
+ case 'l':
+ disp.mode = MODE_LIST_SUBNODES;
+ args_per_step = 1;
+ break;
+
+ case 'd':
+ disp.default_val = optarg;
+ break;
+ }
+ }
+
+ if (optind < argc)
+ filename = argv[optind++];
+ if (!filename)
+ usage("Missing filename");
+
+ argv += optind;
+ argc -= optind;
+
+ /* Allow no arguments, and silently succeed */
+ if (!argc)
+ return 0;
+
+ /* Check for node, property arguments */
+ if (args_per_step == 2 && (argc % 2))
+ usage("Must have an even number of arguments");
+
+ if (do_fdtget(&disp, filename, argv, argc, args_per_step))
+ return 1;
+ return 0;
+}
diff --git a/scripts/dtc/fdtput.c b/scripts/dtc/fdtput.c
new file mode 100644
index 0000000..f2197f5
--- /dev/null
+++ b/scripts/dtc/fdtput.c
@@ -0,0 +1,362 @@
+/*
+ * Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <assert.h>
+#include <ctype.h>
+#include <getopt.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <libfdt.h>
+
+#include "util.h"
+
+/* These are the operations we support */
+enum oper_type {
+ OPER_WRITE_PROP, /* Write a property in a node */
+ OPER_CREATE_NODE, /* Create a new node */
+};
+
+struct display_info {
+ enum oper_type oper; /* operation to perform */
+ int type; /* data type (s/i/u/x or 0 for default) */
+ int size; /* data size (1/2/4) */
+ int verbose; /* verbose output */
+ int auto_path; /* automatically create all path components */
+};
+
+
+/**
+ * Report an error with a particular node.
+ *
+ * @param name Node name to report error on
+ * @param namelen Length of node name, or -1 to use entire string
+ * @param err Error number to report (-FDT_ERR_...)
+ */
+static void report_error(const char *name, int namelen, int err)
+{
+ if (namelen == -1)
+ namelen = strlen(name);
+ fprintf(stderr, "Error at '%1.*s': %s\n", namelen, name,
+ fdt_strerror(err));
+}
+
+/**
+ * Encode a series of arguments in a property value.
+ *
+ * @param disp Display information / options
+ * @param arg List of arguments from command line
+ * @param arg_count Number of arguments (may be 0)
+ * @param valuep Returns buffer containing value
+ * @param *value_len Returns length of value encoded
+ */
+static int encode_value(struct display_info *disp, char **arg, int arg_count,
+ char **valuep, int *value_len)
+{
+ char *value = NULL; /* holding area for value */
+ int value_size = 0; /* size of holding area */
+ char *ptr; /* pointer to current value position */
+ int len; /* length of this cell/string/byte */
+ int ival;
+ int upto; /* the number of bytes we have written to buf */
+ char fmt[3];
+
+ upto = 0;
+
+ if (disp->verbose)
+ fprintf(stderr, "Decoding value:\n");
+
+ fmt[0] = '%';
+ fmt[1] = disp->type ? disp->type : 'd';
+ fmt[2] = '\0';
+ for (; arg_count > 0; arg++, arg_count--, upto += len) {
+ /* assume integer unless told otherwise */
+ if (disp->type == 's')
+ len = strlen(*arg) + 1;
+ else
+ len = disp->size == -1 ? 4 : disp->size;
+
+ /* enlarge our value buffer by a suitable margin if needed */
+ if (upto + len > value_size) {
+ value_size = (upto + len) + 500;
+ value = realloc(value, value_size);
+ if (!value) {
+ fprintf(stderr, "Out of mmory: cannot alloc "
+ "%d bytes\n", value_size);
+ return -1;
+ }
+ }
+
+ ptr = value + upto;
+ if (disp->type == 's') {
+ memcpy(ptr, *arg, len);
+ if (disp->verbose)
+ fprintf(stderr, "\tstring: '%s'\n", ptr);
+ } else {
+ int *iptr = (int *)ptr;
+ sscanf(*arg, fmt, &ival);
+ if (len == 4)
+ *iptr = cpu_to_fdt32(ival);
+ else
+ *ptr = (uint8_t)ival;
+ if (disp->verbose) {
+ fprintf(stderr, "\t%s: %d\n",
+ disp->size == 1 ? "byte" :
+ disp->size == 2 ? "short" : "int",
+ ival);
+ }
+ }
+ }
+ *value_len = upto;
+ *valuep = value;
+ if (disp->verbose)
+ fprintf(stderr, "Value size %d\n", upto);
+ return 0;
+}
+
+static int store_key_value(void *blob, const char *node_name,
+ const char *property, const char *buf, int len)
+{
+ int node;
+ int err;
+
+ node = fdt_path_offset(blob, node_name);
+ if (node < 0) {
+ report_error(node_name, -1, node);
+ return -1;
+ }
+
+ err = fdt_setprop(blob, node, property, buf, len);
+ if (err) {
+ report_error(property, -1, err);
+ return -1;
+ }
+ return 0;
+}
+
+/**
+ * Create paths as needed for all components of a path
+ *
+ * Any components of the path that do not exist are created. Errors are
+ * reported.
+ *
+ * @param blob FDT blob to write into
+ * @param in_path Path to process
+ * @return 0 if ok, -1 on error
+ */
+static int create_paths(void *blob, const char *in_path)
+{
+ const char *path = in_path;
+ const char *sep;
+ int node, offset = 0;
+
+ /* skip leading '/' */
+ while (*path == '/')
+ path++;
+
+ for (sep = path; *sep; path = sep + 1, offset = node) {
+ /* equivalent to strchrnul(), but it requires _GNU_SOURCE */
+ sep = strchr(path, '/');
+ if (!sep)
+ sep = path + strlen(path);
+
+ node = fdt_subnode_offset_namelen(blob, offset, path,
+ sep - path);
+ if (node == -FDT_ERR_NOTFOUND) {
+ node = fdt_add_subnode_namelen(blob, offset, path,
+ sep - path);
+ }
+ if (node < 0) {
+ report_error(path, sep - path, node);
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+/**
+ * Create a new node in the fdt.
+ *
+ * This will overwrite the node_name string. Any error is reported.
+ *
+ * TODO: Perhaps create fdt_path_offset_namelen() so we don't need to do this.
+ *
+ * @param blob FDT blob to write into
+ * @param node_name Name of node to create
+ * @return new node offset if found, or -1 on failure
+ */
+static int create_node(void *blob, const char *node_name)
+{
+ int node = 0;
+ char *p;
+
+ p = strrchr(node_name, '/');
+ if (!p) {
+ report_error(node_name, -1, -FDT_ERR_BADPATH);
+ return -1;
+ }
+ *p = '\0';
+
+ if (p > node_name) {
+ node = fdt_path_offset(blob, node_name);
+ if (node < 0) {
+ report_error(node_name, -1, node);
+ return -1;
+ }
+ }
+
+ node = fdt_add_subnode(blob, node, p + 1);
+ if (node < 0) {
+ report_error(p + 1, -1, node);
+ return -1;
+ }
+
+ return 0;
+}
+
+static int do_fdtput(struct display_info *disp, const char *filename,
+ char **arg, int arg_count)
+{
+ char *value;
+ char *blob;
+ int len, ret = 0;
+
+ blob = utilfdt_read(filename);
+ if (!blob)
+ return -1;
+
+ switch (disp->oper) {
+ case OPER_WRITE_PROP:
+ /*
+ * Convert the arguments into a single binary value, then
+ * store them into the property.
+ */
+ assert(arg_count >= 2);
+ if (disp->auto_path && create_paths(blob, *arg))
+ return -1;
+ if (encode_value(disp, arg + 2, arg_count - 2, &value, &len) ||
+ store_key_value(blob, *arg, arg[1], value, len))
+ ret = -1;
+ break;
+ case OPER_CREATE_NODE:
+ for (; ret >= 0 && arg_count--; arg++) {
+ if (disp->auto_path)
+ ret = create_paths(blob, *arg);
+ else
+ ret = create_node(blob, *arg);
+ }
+ break;
+ }
+ if (ret >= 0)
+ ret = utilfdt_write(filename, blob);
+
+ free(blob);
+ return ret;
+}
+
+static const char *usage_msg =
+ "fdtput - write a property value to a device tree\n"
+ "\n"
+ "The command line arguments are joined together into a single value.\n"
+ "\n"
+ "Usage:\n"
+ " fdtput <options> <dt file> <node> <property> [<value>...]\n"
+ " fdtput -c <options> <dt file> [<node>...]\n"
+ "Options:\n"
+ "\t-c\t\tCreate nodes if they don't already exist\n"
+ "\t-p\t\tAutomatically create nodes as needed for the node path\n"
+ "\t-t <type>\tType of data\n"
+ "\t-v\t\tVerbose: display each value decoded from command line\n"
+ "\t-h\t\tPrint this help\n\n"
+ USAGE_TYPE_MSG;
+
+static void usage(const char *msg)
+{
+ if (msg)
+ fprintf(stderr, "Error: %s\n\n", msg);
+
+ fprintf(stderr, "%s", usage_msg);
+ exit(2);
+}
+
+int main(int argc, char *argv[])
+{
+ struct display_info disp;
+ char *filename = NULL;
+
+ memset(&disp, '\0', sizeof(disp));
+ disp.size = -1;
+ disp.oper = OPER_WRITE_PROP;
+ for (;;) {
+ int c = getopt(argc, argv, "chpt:v");
+ if (c == -1)
+ break;
+
+ /*
+ * TODO: add options to:
+ * - delete property
+ * - delete node (optionally recursively)
+ * - rename node
+ * - pack fdt before writing
+ * - set amount of free space when writing
+ * - expand fdt if value doesn't fit
+ */
+ switch (c) {
+ case 'c':
+ disp.oper = OPER_CREATE_NODE;
+ break;
+ case 'h':
+ case '?':
+ usage(NULL);
+ case 'p':
+ disp.auto_path = 1;
+ break;
+ case 't':
+ if (utilfdt_decode_type(optarg, &disp.type,
+ &disp.size))
+ usage("Invalid type string");
+ break;
+
+ case 'v':
+ disp.verbose = 1;
+ break;
+ }
+ }
+
+ if (optind < argc)
+ filename = argv[optind++];
+ if (!filename)
+ usage("Missing filename");
+
+ argv += optind;
+ argc -= optind;
+
+ if (disp.oper == OPER_WRITE_PROP) {
+ if (argc < 1)
+ usage("Missing node");
+ if (argc < 2)
+ usage("Missing property");
+ }
+
+ if (do_fdtput(&disp, filename, argv, argc))
+ return 1;
+ return 0;
+}
diff --git a/scripts/dtc/flattree.c b/scripts/dtc/flattree.c
new file mode 100644
index 0000000..8d268fb
--- /dev/null
+++ b/scripts/dtc/flattree.c
@@ -0,0 +1,940 @@
+/*
+ * (C) Copyright David Gibson <dwg@au1.ibm.com>, IBM Corporation. 2005.
+ *
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ * USA
+ */
+
+#include "dtc.h"
+#include "srcpos.h"
+
+#define FTF_FULLPATH 0x1
+#define FTF_VARALIGN 0x2
+#define FTF_NAMEPROPS 0x4
+#define FTF_BOOTCPUID 0x8
+#define FTF_STRTABSIZE 0x10
+#define FTF_STRUCTSIZE 0x20
+#define FTF_NOPS 0x40
+
+static struct version_info {
+ int version;
+ int last_comp_version;
+ int hdr_size;
+ int flags;
+} version_table[] = {
+ {1, 1, FDT_V1_SIZE,
+ FTF_FULLPATH|FTF_VARALIGN|FTF_NAMEPROPS},
+ {2, 1, FDT_V2_SIZE,
+ FTF_FULLPATH|FTF_VARALIGN|FTF_NAMEPROPS|FTF_BOOTCPUID},
+ {3, 1, FDT_V3_SIZE,
+ FTF_FULLPATH|FTF_VARALIGN|FTF_NAMEPROPS|FTF_BOOTCPUID|FTF_STRTABSIZE},
+ {16, 16, FDT_V3_SIZE,
+ FTF_BOOTCPUID|FTF_STRTABSIZE|FTF_NOPS},
+ {17, 16, FDT_V17_SIZE,
+ FTF_BOOTCPUID|FTF_STRTABSIZE|FTF_STRUCTSIZE|FTF_NOPS},
+};
+
+struct emitter {
+ void (*cell)(void *, cell_t);
+ void (*string)(void *, const char *, int);
+ void (*align)(void *, int);
+ void (*data)(void *, struct data);
+ void (*beginnode)(void *, struct label *labels);
+ void (*endnode)(void *, struct label *labels);
+ void (*property)(void *, struct label *labels);
+};
+
+static void bin_emit_cell(void *e, cell_t val)
+{
+ struct data *dtbuf = e;
+
+ *dtbuf = data_append_cell(*dtbuf, val);
+}
+
+static void bin_emit_string(void *e, const char *str, int len)
+{
+ struct data *dtbuf = e;
+
+ if (len == 0)
+ len = strlen(str);
+
+ *dtbuf = data_append_data(*dtbuf, str, len);
+ *dtbuf = data_append_byte(*dtbuf, '\0');
+}
+
+static void bin_emit_align(void *e, int a)
+{
+ struct data *dtbuf = e;
+
+ *dtbuf = data_append_align(*dtbuf, a);
+}
+
+static void bin_emit_data(void *e, struct data d)
+{
+ struct data *dtbuf = e;
+
+ *dtbuf = data_append_data(*dtbuf, d.val, d.len);
+}
+
+static void bin_emit_beginnode(void *e, struct label *labels)
+{
+ bin_emit_cell(e, FDT_BEGIN_NODE);
+}
+
+static void bin_emit_endnode(void *e, struct label *labels)
+{
+ bin_emit_cell(e, FDT_END_NODE);
+}
+
+static void bin_emit_property(void *e, struct label *labels)
+{
+ bin_emit_cell(e, FDT_PROP);
+}
+
+static struct emitter bin_emitter = {
+ .cell = bin_emit_cell,
+ .string = bin_emit_string,
+ .align = bin_emit_align,
+ .data = bin_emit_data,
+ .beginnode = bin_emit_beginnode,
+ .endnode = bin_emit_endnode,
+ .property = bin_emit_property,
+};
+
+static void emit_label(FILE *f, const char *prefix, const char *label)
+{
+ fprintf(f, "\t.globl\t%s_%s\n", prefix, label);
+ fprintf(f, "%s_%s:\n", prefix, label);
+ fprintf(f, "_%s_%s:\n", prefix, label);
+}
+
+static void emit_offset_label(FILE *f, const char *label, int offset)
+{
+ fprintf(f, "\t.globl\t%s\n", label);
+ fprintf(f, "%s\t= . + %d\n", label, offset);
+}
+
+#define ASM_EMIT_BELONG(f, fmt, ...) \
+ { \
+ fprintf((f), "\t.byte\t((" fmt ") >> 24) & 0xff\n", __VA_ARGS__); \
+ fprintf((f), "\t.byte\t((" fmt ") >> 16) & 0xff\n", __VA_ARGS__); \
+ fprintf((f), "\t.byte\t((" fmt ") >> 8) & 0xff\n", __VA_ARGS__); \
+ fprintf((f), "\t.byte\t(" fmt ") & 0xff\n", __VA_ARGS__); \
+ }
+
+static void asm_emit_cell(void *e, cell_t val)
+{
+ FILE *f = e;
+
+ fprintf(f, "\t.byte 0x%02x; .byte 0x%02x; .byte 0x%02x; .byte 0x%02x\n",
+ (val >> 24) & 0xff, (val >> 16) & 0xff,
+ (val >> 8) & 0xff, val & 0xff);
+}
+
+static void asm_emit_string(void *e, const char *str, int len)
+{
+ FILE *f = e;
+
+ if (len != 0)
+ fprintf(f, "\t.string\t\"%.*s\"\n", len, str);
+ else
+ fprintf(f, "\t.string\t\"%s\"\n", str);
+}
+
+static void asm_emit_align(void *e, int a)
+{
+ FILE *f = e;
+
+ fprintf(f, "\t.balign\t%d, 0\n", a);
+}
+
+static void asm_emit_data(void *e, struct data d)
+{
+ FILE *f = e;
+ int off = 0;
+ struct marker *m = d.markers;
+
+ for_each_marker_of_type(m, LABEL)
+ emit_offset_label(f, m->ref, m->offset);
+
+ while ((d.len - off) >= sizeof(uint32_t)) {
+ asm_emit_cell(e, fdt32_to_cpu(*((fdt32_t *)(d.val+off))));
+ off += sizeof(uint32_t);
+ }
+
+ while ((d.len - off) >= 1) {
+ fprintf(f, "\t.byte\t0x%hhx\n", d.val[off]);
+ off += 1;
+ }
+
+ assert(off == d.len);
+}
+
+static void asm_emit_beginnode(void *e, struct label *labels)
+{
+ FILE *f = e;
+ struct label *l;
+
+ for_each_label(labels, l) {
+ fprintf(f, "\t.globl\t%s\n", l->label);
+ fprintf(f, "%s:\n", l->label);
+ }
+ fprintf(f, "\t/* FDT_BEGIN_NODE */\n");
+ asm_emit_cell(e, FDT_BEGIN_NODE);
+}
+
+static void asm_emit_endnode(void *e, struct label *labels)
+{
+ FILE *f = e;
+ struct label *l;
+
+ fprintf(f, "\t/* FDT_END_NODE */\n");
+ asm_emit_cell(e, FDT_END_NODE);
+ for_each_label(labels, l) {
+ fprintf(f, "\t.globl\t%s_end\n", l->label);
+ fprintf(f, "%s_end:\n", l->label);
+ }
+}
+
+static void asm_emit_property(void *e, struct label *labels)
+{
+ FILE *f = e;
+ struct label *l;
+
+ for_each_label(labels, l) {
+ fprintf(f, "\t.globl\t%s\n", l->label);
+ fprintf(f, "%s:\n", l->label);
+ }
+ fprintf(f, "\t/* FDT_PROP */\n");
+ asm_emit_cell(e, FDT_PROP);
+}
+
+static struct emitter asm_emitter = {
+ .cell = asm_emit_cell,
+ .string = asm_emit_string,
+ .align = asm_emit_align,
+ .data = asm_emit_data,
+ .beginnode = asm_emit_beginnode,
+ .endnode = asm_emit_endnode,
+ .property = asm_emit_property,
+};
+
+static int stringtable_insert(struct data *d, const char *str)
+{
+ int i;
+
+ /* FIXME: do this more efficiently? */
+
+ for (i = 0; i < d->len; i++) {
+ if (streq(str, d->val + i))
+ return i;
+ }
+
+ *d = data_append_data(*d, str, strlen(str)+1);
+ return i;
+}
+
+static void flatten_tree(struct node *tree, struct emitter *emit,
+ void *etarget, struct data *strbuf,
+ struct version_info *vi)
+{
+ struct property *prop;
+ struct node *child;
+ bool seen_name_prop = false;
+
+ if (tree->deleted)
+ return;
+
+ emit->beginnode(etarget, tree->labels);
+
+ if (vi->flags & FTF_FULLPATH)
+ emit->string(etarget, tree->fullpath, 0);
+ else
+ emit->string(etarget, tree->name, 0);
+
+ emit->align(etarget, sizeof(cell_t));
+
+ for_each_property(tree, prop) {
+ int nameoff;
+
+ if (streq(prop->name, "name"))
+ seen_name_prop = true;
+
+ nameoff = stringtable_insert(strbuf, prop->name);
+
+ emit->property(etarget, prop->labels);
+ emit->cell(etarget, prop->val.len);
+ emit->cell(etarget, nameoff);
+
+ if ((vi->flags & FTF_VARALIGN) && (prop->val.len >= 8))
+ emit->align(etarget, 8);
+
+ emit->data(etarget, prop->val);
+ emit->align(etarget, sizeof(cell_t));
+ }
+
+ if ((vi->flags & FTF_NAMEPROPS) && !seen_name_prop) {
+ emit->property(etarget, NULL);
+ emit->cell(etarget, tree->basenamelen+1);
+ emit->cell(etarget, stringtable_insert(strbuf, "name"));
+
+ if ((vi->flags & FTF_VARALIGN) && ((tree->basenamelen+1) >= 8))
+ emit->align(etarget, 8);
+
+ emit->string(etarget, tree->name, tree->basenamelen);
+ emit->align(etarget, sizeof(cell_t));
+ }
+
+ for_each_child(tree, child) {
+ flatten_tree(child, emit, etarget, strbuf, vi);
+ }
+
+ emit->endnode(etarget, tree->labels);
+}
+
+static struct data flatten_reserve_list(struct reserve_info *reservelist,
+ struct version_info *vi)
+{
+ struct reserve_info *re;
+ struct data d = empty_data;
+ int j;
+
+ for (re = reservelist; re; re = re->next) {
+ d = data_append_re(d, re->address, re->size);
+ }
+ /*
+ * Add additional reserved slots if the user asked for them.
+ */
+ for (j = 0; j < reservenum; j++) {
+ d = data_append_re(d, 0, 0);
+ }
+
+ return d;
+}
+
+static void make_fdt_header(struct fdt_header *fdt,
+ struct version_info *vi,
+ int reservesize, int dtsize, int strsize,
+ int boot_cpuid_phys)
+{
+ int reserve_off;
+
+ reservesize += sizeof(struct fdt_reserve_entry);
+
+ memset(fdt, 0xff, sizeof(*fdt));
+
+ fdt->magic = cpu_to_fdt32(FDT_MAGIC);
+ fdt->version = cpu_to_fdt32(vi->version);
+ fdt->last_comp_version = cpu_to_fdt32(vi->last_comp_version);
+
+ /* Reserve map should be doubleword aligned */
+ reserve_off = ALIGN(vi->hdr_size, 8);
+
+ fdt->off_mem_rsvmap = cpu_to_fdt32(reserve_off);
+ fdt->off_dt_struct = cpu_to_fdt32(reserve_off + reservesize);
+ fdt->off_dt_strings = cpu_to_fdt32(reserve_off + reservesize
+ + dtsize);
+ fdt->totalsize = cpu_to_fdt32(reserve_off + reservesize + dtsize + strsize);
+
+ if (vi->flags & FTF_BOOTCPUID)
+ fdt->boot_cpuid_phys = cpu_to_fdt32(boot_cpuid_phys);
+ if (vi->flags & FTF_STRTABSIZE)
+ fdt->size_dt_strings = cpu_to_fdt32(strsize);
+ if (vi->flags & FTF_STRUCTSIZE)
+ fdt->size_dt_struct = cpu_to_fdt32(dtsize);
+}
+
+void dt_to_blob(FILE *f, struct dt_info *dti, int version)
+{
+ struct version_info *vi = NULL;
+ int i;
+ struct data blob = empty_data;
+ struct data reservebuf = empty_data;
+ struct data dtbuf = empty_data;
+ struct data strbuf = empty_data;
+ struct fdt_header fdt;
+ int padlen = 0;
+
+ for (i = 0; i < ARRAY_SIZE(version_table); i++) {
+ if (version_table[i].version == version)
+ vi = &version_table[i];
+ }
+ if (!vi)
+ die("Unknown device tree blob version %d\n", version);
+
+ flatten_tree(dti->dt, &bin_emitter, &dtbuf, &strbuf, vi);
+ bin_emit_cell(&dtbuf, FDT_END);
+
+ reservebuf = flatten_reserve_list(dti->reservelist, vi);
+
+ /* Make header */
+ make_fdt_header(&fdt, vi, reservebuf.len, dtbuf.len, strbuf.len,
+ dti->boot_cpuid_phys);
+
+ /*
+ * If the user asked for more space than is used, adjust the totalsize.
+ */
+ if (minsize > 0) {
+ padlen = minsize - fdt32_to_cpu(fdt.totalsize);
+ if (padlen < 0) {
+ padlen = 0;
+ if (quiet < 1)
+ fprintf(stderr,
+ "Warning: blob size %d >= minimum size %d\n",
+ fdt32_to_cpu(fdt.totalsize), minsize);
+ }
+ }
+
+ if (padsize > 0)
+ padlen = padsize;
+
+ if (alignsize > 0)
+ padlen = ALIGN(fdt32_to_cpu(fdt.totalsize) + padlen, alignsize)
+ - fdt32_to_cpu(fdt.totalsize);
+
+ if (padlen > 0) {
+ int tsize = fdt32_to_cpu(fdt.totalsize);
+ tsize += padlen;
+ fdt.totalsize = cpu_to_fdt32(tsize);
+ }
+
+ /*
+ * Assemble the blob: start with the header, add with alignment
+ * the reserve buffer, add the reserve map terminating zeroes,
+ * the device tree itself, and finally the strings.
+ */
+ blob = data_append_data(blob, &fdt, vi->hdr_size);
+ blob = data_append_align(blob, 8);
+ blob = data_merge(blob, reservebuf);
+ blob = data_append_zeroes(blob, sizeof(struct fdt_reserve_entry));
+ blob = data_merge(blob, dtbuf);
+ blob = data_merge(blob, strbuf);
+
+ /*
+ * If the user asked for more space than is used, pad out the blob.
+ */
+ if (padlen > 0)
+ blob = data_append_zeroes(blob, padlen);
+
+ if (fwrite(blob.val, blob.len, 1, f) != 1) {
+ if (ferror(f))
+ die("Error writing device tree blob: %s\n",
+ strerror(errno));
+ else
+ die("Short write on device tree blob\n");
+ }
+
+ /*
+ * data_merge() frees the right-hand element so only the blob
+ * remains to be freed.
+ */
+ data_free(blob);
+}
+
+static void dump_stringtable_asm(FILE *f, struct data strbuf)
+{
+ const char *p;
+ int len;
+
+ p = strbuf.val;
+
+ while (p < (strbuf.val + strbuf.len)) {
+ len = strlen(p);
+ fprintf(f, "\t.string \"%s\"\n", p);
+ p += len+1;
+ }
+}
+
+void dt_to_asm(FILE *f, struct dt_info *dti, int version)
+{
+ struct version_info *vi = NULL;
+ int i;
+ struct data strbuf = empty_data;
+ struct reserve_info *re;
+ const char *symprefix = "dt";
+
+ for (i = 0; i < ARRAY_SIZE(version_table); i++) {
+ if (version_table[i].version == version)
+ vi = &version_table[i];
+ }
+ if (!vi)
+ die("Unknown device tree blob version %d\n", version);
+
+ fprintf(f, "/* autogenerated by dtc, do not edit */\n\n");
+
+ emit_label(f, symprefix, "blob_start");
+ emit_label(f, symprefix, "header");
+ fprintf(f, "\t/* magic */\n");
+ asm_emit_cell(f, FDT_MAGIC);
+ fprintf(f, "\t/* totalsize */\n");
+ ASM_EMIT_BELONG(f, "_%s_blob_abs_end - _%s_blob_start",
+ symprefix, symprefix);
+ fprintf(f, "\t/* off_dt_struct */\n");
+ ASM_EMIT_BELONG(f, "_%s_struct_start - _%s_blob_start",
+ symprefix, symprefix);
+ fprintf(f, "\t/* off_dt_strings */\n");
+ ASM_EMIT_BELONG(f, "_%s_strings_start - _%s_blob_start",
+ symprefix, symprefix);
+ fprintf(f, "\t/* off_mem_rsvmap */\n");
+ ASM_EMIT_BELONG(f, "_%s_reserve_map - _%s_blob_start",
+ symprefix, symprefix);
+ fprintf(f, "\t/* version */\n");
+ asm_emit_cell(f, vi->version);
+ fprintf(f, "\t/* last_comp_version */\n");
+ asm_emit_cell(f, vi->last_comp_version);
+
+ if (vi->flags & FTF_BOOTCPUID) {
+ fprintf(f, "\t/* boot_cpuid_phys */\n");
+ asm_emit_cell(f, dti->boot_cpuid_phys);
+ }
+
+ if (vi->flags & FTF_STRTABSIZE) {
+ fprintf(f, "\t/* size_dt_strings */\n");
+ ASM_EMIT_BELONG(f, "_%s_strings_end - _%s_strings_start",
+ symprefix, symprefix);
+ }
+
+ if (vi->flags & FTF_STRUCTSIZE) {
+ fprintf(f, "\t/* size_dt_struct */\n");
+ ASM_EMIT_BELONG(f, "_%s_struct_end - _%s_struct_start",
+ symprefix, symprefix);
+ }
+
+ /*
+ * Reserve map entries.
+ * Align the reserve map to a doubleword boundary.
+ * Each entry is an (address, size) pair of u64 values.
+ * Always supply a zero-sized temination entry.
+ */
+ asm_emit_align(f, 8);
+ emit_label(f, symprefix, "reserve_map");
+
+ fprintf(f, "/* Memory reserve map from source file */\n");
+
+ /*
+ * Use .long on high and low halfs of u64s to avoid .quad
+ * as it appears .quad isn't available in some assemblers.
+ */
+ for (re = dti->reservelist; re; re = re->next) {
+ struct label *l;
+
+ for_each_label(re->labels, l) {
+ fprintf(f, "\t.globl\t%s\n", l->label);
+ fprintf(f, "%s:\n", l->label);
+ }
+ ASM_EMIT_BELONG(f, "0x%08x", (unsigned int)(re->address >> 32));
+ ASM_EMIT_BELONG(f, "0x%08x",
+ (unsigned int)(re->address & 0xffffffff));
+ ASM_EMIT_BELONG(f, "0x%08x", (unsigned int)(re->size >> 32));
+ ASM_EMIT_BELONG(f, "0x%08x", (unsigned int)(re->size & 0xffffffff));
+ }
+ for (i = 0; i < reservenum; i++) {
+ fprintf(f, "\t.long\t0, 0\n\t.long\t0, 0\n");
+ }
+
+ fprintf(f, "\t.long\t0, 0\n\t.long\t0, 0\n");
+
+ emit_label(f, symprefix, "struct_start");
+ flatten_tree(dti->dt, &asm_emitter, f, &strbuf, vi);
+
+ fprintf(f, "\t/* FDT_END */\n");
+ asm_emit_cell(f, FDT_END);
+ emit_label(f, symprefix, "struct_end");
+
+ emit_label(f, symprefix, "strings_start");
+ dump_stringtable_asm(f, strbuf);
+ emit_label(f, symprefix, "strings_end");
+
+ emit_label(f, symprefix, "blob_end");
+
+ /*
+ * If the user asked for more space than is used, pad it out.
+ */
+ if (minsize > 0) {
+ fprintf(f, "\t.space\t%d - (_%s_blob_end - _%s_blob_start), 0\n",
+ minsize, symprefix, symprefix);
+ }
+ if (padsize > 0) {
+ fprintf(f, "\t.space\t%d, 0\n", padsize);
+ }
+ if (alignsize > 0)
+ asm_emit_align(f, alignsize);
+ emit_label(f, symprefix, "blob_abs_end");
+
+ data_free(strbuf);
+}
+
+struct inbuf {
+ char *base, *limit, *ptr;
+};
+
+static void inbuf_init(struct inbuf *inb, void *base, void *limit)
+{
+ inb->base = base;
+ inb->limit = limit;
+ inb->ptr = inb->base;
+}
+
+static void flat_read_chunk(struct inbuf *inb, void *p, int len)
+{
+ if ((inb->ptr + len) > inb->limit)
+ die("Premature end of data parsing flat device tree\n");
+
+ memcpy(p, inb->ptr, len);
+
+ inb->ptr += len;
+}
+
+static uint32_t flat_read_word(struct inbuf *inb)
+{
+ fdt32_t val;
+
+ assert(((inb->ptr - inb->base) % sizeof(val)) == 0);
+
+ flat_read_chunk(inb, &val, sizeof(val));
+
+ return fdt32_to_cpu(val);
+}
+
+static void flat_realign(struct inbuf *inb, int align)
+{
+ int off = inb->ptr - inb->base;
+
+ inb->ptr = inb->base + ALIGN(off, align);
+ if (inb->ptr > inb->limit)
+ die("Premature end of data parsing flat device tree\n");
+}
+
+static char *flat_read_string(struct inbuf *inb)
+{
+ int len = 0;
+ const char *p = inb->ptr;
+ char *str;
+
+ do {
+ if (p >= inb->limit)
+ die("Premature end of data parsing flat device tree\n");
+ len++;
+ } while ((*p++) != '\0');
+
+ str = xstrdup(inb->ptr);
+
+ inb->ptr += len;
+
+ flat_realign(inb, sizeof(uint32_t));
+
+ return str;
+}
+
+static struct data flat_read_data(struct inbuf *inb, int len)
+{
+ struct data d = empty_data;
+
+ if (len == 0)
+ return empty_data;
+
+ d = data_grow_for(d, len);
+ d.len = len;
+
+ flat_read_chunk(inb, d.val, len);
+
+ flat_realign(inb, sizeof(uint32_t));
+
+ return d;
+}
+
+static char *flat_read_stringtable(struct inbuf *inb, int offset)
+{
+ const char *p;
+
+ p = inb->base + offset;
+ while (1) {
+ if (p >= inb->limit || p < inb->base)
+ die("String offset %d overruns string table\n",
+ offset);
+
+ if (*p == '\0')
+ break;
+
+ p++;
+ }
+
+ return xstrdup(inb->base + offset);
+}
+
+static struct property *flat_read_property(struct inbuf *dtbuf,
+ struct inbuf *strbuf, int flags)
+{
+ uint32_t proplen, stroff;
+ char *name;
+ struct data val;
+
+ proplen = flat_read_word(dtbuf);
+ stroff = flat_read_word(dtbuf);
+
+ name = flat_read_stringtable(strbuf, stroff);
+
+ if ((flags & FTF_VARALIGN) && (proplen >= 8))
+ flat_realign(dtbuf, 8);
+
+ val = flat_read_data(dtbuf, proplen);
+
+ return build_property(name, val);
+}
+
+
+static struct reserve_info *flat_read_mem_reserve(struct inbuf *inb)
+{
+ struct reserve_info *reservelist = NULL;
+ struct reserve_info *new;
+ struct fdt_reserve_entry re;
+
+ /*
+ * Each entry is a pair of u64 (addr, size) values for 4 cell_t's.
+ * List terminates at an entry with size equal to zero.
+ *
+ * First pass, count entries.
+ */
+ while (1) {
+ uint64_t address, size;
+
+ flat_read_chunk(inb, &re, sizeof(re));
+ address = fdt64_to_cpu(re.address);
+ size = fdt64_to_cpu(re.size);
+ if (size == 0)
+ break;
+
+ new = build_reserve_entry(address, size);
+ reservelist = add_reserve_entry(reservelist, new);
+ }
+
+ return reservelist;
+}
+
+
+static char *nodename_from_path(const char *ppath, const char *cpath)
+{
+ int plen;
+
+ plen = strlen(ppath);
+
+ if (!strstarts(cpath, ppath))
+ die("Path \"%s\" is not valid as a child of \"%s\"\n",
+ cpath, ppath);
+
+ /* root node is a special case */
+ if (!streq(ppath, "/"))
+ plen++;
+
+ return xstrdup(cpath + plen);
+}
+
+static struct node *unflatten_tree(struct inbuf *dtbuf,
+ struct inbuf *strbuf,
+ const char *parent_flatname, int flags)
+{
+ struct node *node;
+ char *flatname;
+ uint32_t val;
+
+ node = build_node(NULL, NULL);
+
+ flatname = flat_read_string(dtbuf);
+
+ if (flags & FTF_FULLPATH)
+ node->name = nodename_from_path(parent_flatname, flatname);
+ else
+ node->name = flatname;
+
+ do {
+ struct property *prop;
+ struct node *child;
+
+ val = flat_read_word(dtbuf);
+ switch (val) {
+ case FDT_PROP:
+ if (node->children)
+ fprintf(stderr, "Warning: Flat tree input has "
+ "subnodes preceding a property.\n");
+ prop = flat_read_property(dtbuf, strbuf, flags);
+ add_property(node, prop);
+ break;
+
+ case FDT_BEGIN_NODE:
+ child = unflatten_tree(dtbuf,strbuf, flatname, flags);
+ add_child(node, child);
+ break;
+
+ case FDT_END_NODE:
+ break;
+
+ case FDT_END:
+ die("Premature FDT_END in device tree blob\n");
+ break;
+
+ case FDT_NOP:
+ if (!(flags & FTF_NOPS))
+ fprintf(stderr, "Warning: NOP tag found in flat tree"
+ " version <16\n");
+
+ /* Ignore */
+ break;
+
+ default:
+ die("Invalid opcode word %08x in device tree blob\n",
+ val);
+ }
+ } while (val != FDT_END_NODE);
+
+ if (node->name != flatname) {
+ free(flatname);
+ }
+
+ return node;
+}
+
+
+struct dt_info *dt_from_blob(const char *fname)
+{
+ FILE *f;
+ fdt32_t magic_buf, totalsize_buf;
+ uint32_t magic, totalsize, version, size_dt, boot_cpuid_phys;
+ uint32_t off_dt, off_str, off_mem_rsvmap;
+ int rc;
+ char *blob;
+ struct fdt_header *fdt;
+ char *p;
+ struct inbuf dtbuf, strbuf;
+ struct inbuf memresvbuf;
+ int sizeleft;
+ struct reserve_info *reservelist;
+ struct node *tree;
+ uint32_t val;
+ int flags = 0;
+
+ f = srcfile_relative_open(fname, NULL);
+
+ rc = fread(&magic_buf, sizeof(magic_buf), 1, f);
+ if (ferror(f))
+ die("Error reading DT blob magic number: %s\n",
+ strerror(errno));
+ if (rc < 1) {
+ if (feof(f))
+ die("EOF reading DT blob magic number\n");
+ else
+ die("Mysterious short read reading magic number\n");
+ }
+
+ magic = fdt32_to_cpu(magic_buf);
+ if (magic != FDT_MAGIC)
+ die("Blob has incorrect magic number\n");
+
+ rc = fread(&totalsize_buf, sizeof(totalsize_buf), 1, f);
+ if (ferror(f))
+ die("Error reading DT blob size: %s\n", strerror(errno));
+ if (rc < 1) {
+ if (feof(f))
+ die("EOF reading DT blob size\n");
+ else
+ die("Mysterious short read reading blob size\n");
+ }
+
+ totalsize = fdt32_to_cpu(totalsize_buf);
+ if (totalsize < FDT_V1_SIZE)
+ die("DT blob size (%d) is too small\n", totalsize);
+
+ blob = xmalloc(totalsize);
+
+ fdt = (struct fdt_header *)blob;
+ fdt->magic = cpu_to_fdt32(magic);
+ fdt->totalsize = cpu_to_fdt32(totalsize);
+
+ sizeleft = totalsize - sizeof(magic) - sizeof(totalsize);
+ p = blob + sizeof(magic) + sizeof(totalsize);
+
+ while (sizeleft) {
+ if (feof(f))
+ die("EOF before reading %d bytes of DT blob\n",
+ totalsize);
+
+ rc = fread(p, 1, sizeleft, f);
+ if (ferror(f))
+ die("Error reading DT blob: %s\n",
+ strerror(errno));
+
+ sizeleft -= rc;
+ p += rc;
+ }
+
+ off_dt = fdt32_to_cpu(fdt->off_dt_struct);
+ off_str = fdt32_to_cpu(fdt->off_dt_strings);
+ off_mem_rsvmap = fdt32_to_cpu(fdt->off_mem_rsvmap);
+ version = fdt32_to_cpu(fdt->version);
+ boot_cpuid_phys = fdt32_to_cpu(fdt->boot_cpuid_phys);
+
+ if (off_mem_rsvmap >= totalsize)
+ die("Mem Reserve structure offset exceeds total size\n");
+
+ if (off_dt >= totalsize)
+ die("DT structure offset exceeds total size\n");
+
+ if (off_str > totalsize)
+ die("String table offset exceeds total size\n");
+
+ if (version >= 3) {
+ uint32_t size_str = fdt32_to_cpu(fdt->size_dt_strings);
+ if ((off_str+size_str < off_str) || (off_str+size_str > totalsize))
+ die("String table extends past total size\n");
+ inbuf_init(&strbuf, blob + off_str, blob + off_str + size_str);
+ } else {
+ inbuf_init(&strbuf, blob + off_str, blob + totalsize);
+ }
+
+ if (version >= 17) {
+ size_dt = fdt32_to_cpu(fdt->size_dt_struct);
+ if ((off_dt+size_dt < off_dt) || (off_dt+size_dt > totalsize))
+ die("Structure block extends past total size\n");
+ }
+
+ if (version < 16) {
+ flags |= FTF_FULLPATH | FTF_NAMEPROPS | FTF_VARALIGN;
+ } else {
+ flags |= FTF_NOPS;
+ }
+
+ inbuf_init(&memresvbuf,
+ blob + off_mem_rsvmap, blob + totalsize);
+ inbuf_init(&dtbuf, blob + off_dt, blob + totalsize);
+
+ reservelist = flat_read_mem_reserve(&memresvbuf);
+
+ val = flat_read_word(&dtbuf);
+
+ if (val != FDT_BEGIN_NODE)
+ die("Device tree blob doesn't begin with FDT_BEGIN_NODE (begins with 0x%08x)\n", val);
+
+ tree = unflatten_tree(&dtbuf, &strbuf, "", flags);
+
+ val = flat_read_word(&dtbuf);
+ if (val != FDT_END)
+ die("Device tree blob doesn't end with FDT_END\n");
+
+ free(blob);
+
+ fclose(f);
+
+ return build_dt_info(DTSF_V1, reservelist, tree, boot_cpuid_phys);
+}
diff --git a/scripts/dtc/fstree.c b/scripts/dtc/fstree.c
new file mode 100644
index 0000000..ae7d06c
--- /dev/null
+++ b/scripts/dtc/fstree.c
@@ -0,0 +1,90 @@
+/*
+ * (C) Copyright David Gibson <dwg@au1.ibm.com>, IBM Corporation. 2005.
+ *
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ * USA
+ */
+
+#include "dtc.h"
+
+#include <dirent.h>
+#include <sys/stat.h>
+
+static struct node *read_fstree(const char *dirname)
+{
+ DIR *d;
+ struct dirent *de;
+ struct stat st;
+ struct node *tree;
+
+ d = opendir(dirname);
+ if (!d)
+ die("Couldn't opendir() \"%s\": %s\n", dirname, strerror(errno));
+
+ tree = build_node(NULL, NULL);
+
+ while ((de = readdir(d)) != NULL) {
+ char *tmpname;
+
+ if (streq(de->d_name, ".")
+ || streq(de->d_name, ".."))
+ continue;
+
+ tmpname = join_path(dirname, de->d_name);
+
+ if (lstat(tmpname, &st) < 0)
+ die("stat(%s): %s\n", tmpname, strerror(errno));
+
+ if (S_ISREG(st.st_mode)) {
+ struct property *prop;
+ FILE *pfile;
+
+ pfile = fopen(tmpname, "rb");
+ if (! pfile) {
+ fprintf(stderr,
+ "WARNING: Cannot open %s: %s\n",
+ tmpname, strerror(errno));
+ } else {
+ prop = build_property(xstrdup(de->d_name),
+ data_copy_file(pfile,
+ st.st_size));
+ add_property(tree, prop);
+ fclose(pfile);
+ }
+ } else if (S_ISDIR(st.st_mode)) {
+ struct node *newchild;
+
+ newchild = read_fstree(tmpname);
+ newchild = name_node(newchild, xstrdup(de->d_name));
+ add_child(tree, newchild);
+ }
+
+ free(tmpname);
+ }
+
+ closedir(d);
+ return tree;
+}
+
+struct dt_info *dt_from_fs(const char *dirname)
+{
+ struct node *tree;
+
+ tree = read_fstree(dirname);
+ tree = name_node(tree, "");
+
+ return build_dt_info(DTSF_V1, NULL, tree, guess_boot_cpuid(tree));
+}
diff --git a/scripts/dtc/include-prefixes/arc b/scripts/dtc/include-prefixes/arc
new file mode 120000
index 0000000..5d21b5a
--- /dev/null
+++ b/scripts/dtc/include-prefixes/arc
@@ -0,0 +1 @@
+../../../arch/arc/boot/dts
\ No newline at end of file
diff --git a/scripts/dtc/include-prefixes/arm b/scripts/dtc/include-prefixes/arm
new file mode 120000
index 0000000..eb14d45
--- /dev/null
+++ b/scripts/dtc/include-prefixes/arm
@@ -0,0 +1 @@
+../../../arch/arm/boot/dts
\ No newline at end of file
diff --git a/scripts/dtc/include-prefixes/arm64 b/scripts/dtc/include-prefixes/arm64
new file mode 120000
index 0000000..275c42c
--- /dev/null
+++ b/scripts/dtc/include-prefixes/arm64
@@ -0,0 +1 @@
+../../../arch/arm64/boot/dts
\ No newline at end of file
diff --git a/scripts/dtc/include-prefixes/c6x b/scripts/dtc/include-prefixes/c6x
new file mode 120000
index 0000000..49ded4c
--- /dev/null
+++ b/scripts/dtc/include-prefixes/c6x
@@ -0,0 +1 @@
+../../../arch/c6x/boot/dts
\ No newline at end of file
diff --git a/scripts/dtc/include-prefixes/dt-bindings b/scripts/dtc/include-prefixes/dt-bindings
new file mode 120000
index 0000000..04fdbb3
--- /dev/null
+++ b/scripts/dtc/include-prefixes/dt-bindings
@@ -0,0 +1 @@
+../../../include/dt-bindings
\ No newline at end of file
diff --git a/scripts/dtc/include-prefixes/h8300 b/scripts/dtc/include-prefixes/h8300
new file mode 120000
index 0000000..3bdaa33
--- /dev/null
+++ b/scripts/dtc/include-prefixes/h8300
@@ -0,0 +1 @@
+../../../arch/h8300/boot/dts
\ No newline at end of file
diff --git a/scripts/dtc/include-prefixes/microblaze b/scripts/dtc/include-prefixes/microblaze
new file mode 120000
index 0000000..d983033
--- /dev/null
+++ b/scripts/dtc/include-prefixes/microblaze
@@ -0,0 +1 @@
+../../../arch/microblaze/boot/dts
\ No newline at end of file
diff --git a/scripts/dtc/include-prefixes/mips b/scripts/dtc/include-prefixes/mips
new file mode 120000
index 0000000..ae8d494
--- /dev/null
+++ b/scripts/dtc/include-prefixes/mips
@@ -0,0 +1 @@
+../../../arch/mips/boot/dts
\ No newline at end of file
diff --git a/scripts/dtc/include-prefixes/nios2 b/scripts/dtc/include-prefixes/nios2
new file mode 120000
index 0000000..5177233
--- /dev/null
+++ b/scripts/dtc/include-prefixes/nios2
@@ -0,0 +1 @@
+../../../arch/nios2/boot/dts
\ No newline at end of file
diff --git a/scripts/dtc/include-prefixes/openrisc b/scripts/dtc/include-prefixes/openrisc
new file mode 120000
index 0000000..71c3bc7
--- /dev/null
+++ b/scripts/dtc/include-prefixes/openrisc
@@ -0,0 +1 @@
+../../../arch/openrisc/boot/dts
\ No newline at end of file
diff --git a/scripts/dtc/include-prefixes/powerpc b/scripts/dtc/include-prefixes/powerpc
new file mode 120000
index 0000000..7cd6ec1
--- /dev/null
+++ b/scripts/dtc/include-prefixes/powerpc
@@ -0,0 +1 @@
+../../../arch/powerpc/boot/dts
\ No newline at end of file
diff --git a/scripts/dtc/include-prefixes/sh b/scripts/dtc/include-prefixes/sh
new file mode 120000
index 0000000..67d3780
--- /dev/null
+++ b/scripts/dtc/include-prefixes/sh
@@ -0,0 +1 @@
+../../../arch/sh/boot/dts
\ No newline at end of file
diff --git a/scripts/dtc/include-prefixes/xtensa b/scripts/dtc/include-prefixes/xtensa
new file mode 120000
index 0000000..d1eaf6e
--- /dev/null
+++ b/scripts/dtc/include-prefixes/xtensa
@@ -0,0 +1 @@
+../../../arch/xtensa/boot/dts
\ No newline at end of file
diff --git a/scripts/dtc/libfdt/Makefile.libfdt b/scripts/dtc/libfdt/Makefile.libfdt
new file mode 100644
index 0000000..098b3f3
--- /dev/null
+++ b/scripts/dtc/libfdt/Makefile.libfdt
@@ -0,0 +1,11 @@
+# Makefile.libfdt
+#
+# This is not a complete Makefile of itself. Instead, it is designed to
+# be easily embeddable into other systems of Makefiles.
+#
+LIBFDT_soname = libfdt.$(SHAREDLIB_EXT).1
+LIBFDT_INCLUDES = fdt.h libfdt.h libfdt_env.h
+LIBFDT_VERSION = version.lds
+LIBFDT_SRCS = fdt.c fdt_ro.c fdt_wip.c fdt_sw.c fdt_rw.c fdt_strerror.c fdt_empty_tree.c \
+ fdt_addresses.c fdt_overlay.c
+LIBFDT_OBJS = $(LIBFDT_SRCS:%.c=%.o)
diff --git a/scripts/dtc/libfdt/fdt.c b/scripts/dtc/libfdt/fdt.c
new file mode 100644
index 0000000..7855a17
--- /dev/null
+++ b/scripts/dtc/libfdt/fdt.c
@@ -0,0 +1,254 @@
+/*
+ * libfdt - Flat Device Tree manipulation
+ * Copyright (C) 2006 David Gibson, IBM Corporation.
+ *
+ * libfdt is dual licensed: you can use it either under the terms of
+ * the GPL, or the BSD license, at your option.
+ *
+ * a) This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ *
+ * Alternatively,
+ *
+ * b) Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ * 2. Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include "libfdt_env.h"
+
+#include <fdt.h>
+#include <libfdt.h>
+
+#include "libfdt_internal.h"
+
+int fdt_check_header(const void *fdt)
+{
+ if (fdt_magic(fdt) == FDT_MAGIC) {
+ /* Complete tree */
+ if (fdt_version(fdt) < FDT_FIRST_SUPPORTED_VERSION)
+ return -FDT_ERR_BADVERSION;
+ if (fdt_last_comp_version(fdt) > FDT_LAST_SUPPORTED_VERSION)
+ return -FDT_ERR_BADVERSION;
+ } else if (fdt_magic(fdt) == FDT_SW_MAGIC) {
+ /* Unfinished sequential-write blob */
+ if (fdt_size_dt_struct(fdt) == 0)
+ return -FDT_ERR_BADSTATE;
+ } else {
+ return -FDT_ERR_BADMAGIC;
+ }
+
+ return 0;
+}
+
+const void *fdt_offset_ptr(const void *fdt, int offset, unsigned int len)
+{
+ unsigned absoffset = offset + fdt_off_dt_struct(fdt);
+
+ if ((absoffset < offset)
+ || ((absoffset + len) < absoffset)
+ || (absoffset + len) > fdt_totalsize(fdt))
+ return NULL;
+
+ if (fdt_version(fdt) >= 0x11)
+ if (((offset + len) < offset)
+ || ((offset + len) > fdt_size_dt_struct(fdt)))
+ return NULL;
+
+ return fdt_offset_ptr_(fdt, offset);
+}
+
+uint32_t fdt_next_tag(const void *fdt, int startoffset, int *nextoffset)
+{
+ const fdt32_t *tagp, *lenp;
+ uint32_t tag;
+ int offset = startoffset;
+ const char *p;
+
+ *nextoffset = -FDT_ERR_TRUNCATED;
+ tagp = fdt_offset_ptr(fdt, offset, FDT_TAGSIZE);
+ if (!tagp)
+ return FDT_END; /* premature end */
+ tag = fdt32_to_cpu(*tagp);
+ offset += FDT_TAGSIZE;
+
+ *nextoffset = -FDT_ERR_BADSTRUCTURE;
+ switch (tag) {
+ case FDT_BEGIN_NODE:
+ /* skip name */
+ do {
+ p = fdt_offset_ptr(fdt, offset++, 1);
+ } while (p && (*p != '\0'));
+ if (!p)
+ return FDT_END; /* premature end */
+ break;
+
+ case FDT_PROP:
+ lenp = fdt_offset_ptr(fdt, offset, sizeof(*lenp));
+ if (!lenp)
+ return FDT_END; /* premature end */
+ /* skip-name offset, length and value */
+ offset += sizeof(struct fdt_property) - FDT_TAGSIZE
+ + fdt32_to_cpu(*lenp);
+ if (fdt_version(fdt) < 0x10 && fdt32_to_cpu(*lenp) >= 8 &&
+ ((offset - fdt32_to_cpu(*lenp)) % 8) != 0)
+ offset += 4;
+ break;
+
+ case FDT_END:
+ case FDT_END_NODE:
+ case FDT_NOP:
+ break;
+
+ default:
+ return FDT_END;
+ }
+
+ if (!fdt_offset_ptr(fdt, startoffset, offset - startoffset))
+ return FDT_END; /* premature end */
+
+ *nextoffset = FDT_TAGALIGN(offset);
+ return tag;
+}
+
+int fdt_check_node_offset_(const void *fdt, int offset)
+{
+ if ((offset < 0) || (offset % FDT_TAGSIZE)
+ || (fdt_next_tag(fdt, offset, &offset) != FDT_BEGIN_NODE))
+ return -FDT_ERR_BADOFFSET;
+
+ return offset;
+}
+
+int fdt_check_prop_offset_(const void *fdt, int offset)
+{
+ if ((offset < 0) || (offset % FDT_TAGSIZE)
+ || (fdt_next_tag(fdt, offset, &offset) != FDT_PROP))
+ return -FDT_ERR_BADOFFSET;
+
+ return offset;
+}
+
+int fdt_next_node(const void *fdt, int offset, int *depth)
+{
+ int nextoffset = 0;
+ uint32_t tag;
+
+ if (offset >= 0)
+ if ((nextoffset = fdt_check_node_offset_(fdt, offset)) < 0)
+ return nextoffset;
+
+ do {
+ offset = nextoffset;
+ tag = fdt_next_tag(fdt, offset, &nextoffset);
+
+ switch (tag) {
+ case FDT_PROP:
+ case FDT_NOP:
+ break;
+
+ case FDT_BEGIN_NODE:
+ if (depth)
+ (*depth)++;
+ break;
+
+ case FDT_END_NODE:
+ if (depth && ((--(*depth)) < 0))
+ return nextoffset;
+ break;
+
+ case FDT_END:
+ if ((nextoffset >= 0)
+ || ((nextoffset == -FDT_ERR_TRUNCATED) && !depth))
+ return -FDT_ERR_NOTFOUND;
+ else
+ return nextoffset;
+ }
+ } while (tag != FDT_BEGIN_NODE);
+
+ return offset;
+}
+
+int fdt_first_subnode(const void *fdt, int offset)
+{
+ int depth = 0;
+
+ offset = fdt_next_node(fdt, offset, &depth);
+ if (offset < 0 || depth != 1)
+ return -FDT_ERR_NOTFOUND;
+
+ return offset;
+}
+
+int fdt_next_subnode(const void *fdt, int offset)
+{
+ int depth = 1;
+
+ /*
+ * With respect to the parent, the depth of the next subnode will be
+ * the same as the last.
+ */
+ do {
+ offset = fdt_next_node(fdt, offset, &depth);
+ if (offset < 0 || depth < 1)
+ return -FDT_ERR_NOTFOUND;
+ } while (depth > 1);
+
+ return offset;
+}
+
+const char *fdt_find_string_(const char *strtab, int tabsize, const char *s)
+{
+ int len = strlen(s) + 1;
+ const char *last = strtab + tabsize - len;
+ const char *p;
+
+ for (p = strtab; p <= last; p++)
+ if (memcmp(p, s, len) == 0)
+ return p;
+ return NULL;
+}
+
+int fdt_move(const void *fdt, void *buf, int bufsize)
+{
+ FDT_CHECK_HEADER(fdt);
+
+ if (fdt_totalsize(fdt) > bufsize)
+ return -FDT_ERR_NOSPACE;
+
+ memmove(buf, fdt, fdt_totalsize(fdt));
+ return 0;
+}
diff --git a/scripts/dtc/libfdt/fdt.h b/scripts/dtc/libfdt/fdt.h
new file mode 100644
index 0000000..74961f9
--- /dev/null
+++ b/scripts/dtc/libfdt/fdt.h
@@ -0,0 +1,111 @@
+#ifndef FDT_H
+#define FDT_H
+/*
+ * libfdt - Flat Device Tree manipulation
+ * Copyright (C) 2006 David Gibson, IBM Corporation.
+ * Copyright 2012 Kim Phillips, Freescale Semiconductor.
+ *
+ * libfdt is dual licensed: you can use it either under the terms of
+ * the GPL, or the BSD license, at your option.
+ *
+ * a) This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ *
+ * Alternatively,
+ *
+ * b) Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ * 2. Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __ASSEMBLY__
+
+struct fdt_header {
+ fdt32_t magic; /* magic word FDT_MAGIC */
+ fdt32_t totalsize; /* total size of DT block */
+ fdt32_t off_dt_struct; /* offset to structure */
+ fdt32_t off_dt_strings; /* offset to strings */
+ fdt32_t off_mem_rsvmap; /* offset to memory reserve map */
+ fdt32_t version; /* format version */
+ fdt32_t last_comp_version; /* last compatible version */
+
+ /* version 2 fields below */
+ fdt32_t boot_cpuid_phys; /* Which physical CPU id we're
+ booting on */
+ /* version 3 fields below */
+ fdt32_t size_dt_strings; /* size of the strings block */
+
+ /* version 17 fields below */
+ fdt32_t size_dt_struct; /* size of the structure block */
+};
+
+struct fdt_reserve_entry {
+ fdt64_t address;
+ fdt64_t size;
+};
+
+struct fdt_node_header {
+ fdt32_t tag;
+ char name[0];
+};
+
+struct fdt_property {
+ fdt32_t tag;
+ fdt32_t len;
+ fdt32_t nameoff;
+ char data[0];
+};
+
+#endif /* !__ASSEMBLY */
+
+#define FDT_MAGIC 0xd00dfeed /* 4: version, 4: total size */
+#define FDT_TAGSIZE sizeof(fdt32_t)
+
+#define FDT_BEGIN_NODE 0x1 /* Start node: full name */
+#define FDT_END_NODE 0x2 /* End node */
+#define FDT_PROP 0x3 /* Property: name off,
+ size, content */
+#define FDT_NOP 0x4 /* nop */
+#define FDT_END 0x9
+
+#define FDT_V1_SIZE (7*sizeof(fdt32_t))
+#define FDT_V2_SIZE (FDT_V1_SIZE + sizeof(fdt32_t))
+#define FDT_V3_SIZE (FDT_V2_SIZE + sizeof(fdt32_t))
+#define FDT_V16_SIZE FDT_V3_SIZE
+#define FDT_V17_SIZE (FDT_V16_SIZE + sizeof(fdt32_t))
+
+#endif /* FDT_H */
diff --git a/scripts/dtc/libfdt/fdt_addresses.c b/scripts/dtc/libfdt/fdt_addresses.c
new file mode 100644
index 0000000..eff4dbc
--- /dev/null
+++ b/scripts/dtc/libfdt/fdt_addresses.c
@@ -0,0 +1,96 @@
+/*
+ * libfdt - Flat Device Tree manipulation
+ * Copyright (C) 2014 David Gibson <david@gibson.dropbear.id.au>
+ *
+ * libfdt is dual licensed: you can use it either under the terms of
+ * the GPL, or the BSD license, at your option.
+ *
+ * a) This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ *
+ * Alternatively,
+ *
+ * b) Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ * 2. Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include "libfdt_env.h"
+
+#include <fdt.h>
+#include <libfdt.h>
+
+#include "libfdt_internal.h"
+
+int fdt_address_cells(const void *fdt, int nodeoffset)
+{
+ const fdt32_t *ac;
+ int val;
+ int len;
+
+ ac = fdt_getprop(fdt, nodeoffset, "#address-cells", &len);
+ if (!ac)
+ return 2;
+
+ if (len != sizeof(*ac))
+ return -FDT_ERR_BADNCELLS;
+
+ val = fdt32_to_cpu(*ac);
+ if ((val <= 0) || (val > FDT_MAX_NCELLS))
+ return -FDT_ERR_BADNCELLS;
+
+ return val;
+}
+
+int fdt_size_cells(const void *fdt, int nodeoffset)
+{
+ const fdt32_t *sc;
+ int val;
+ int len;
+
+ sc = fdt_getprop(fdt, nodeoffset, "#size-cells", &len);
+ if (!sc)
+ return 2;
+
+ if (len != sizeof(*sc))
+ return -FDT_ERR_BADNCELLS;
+
+ val = fdt32_to_cpu(*sc);
+ if ((val < 0) || (val > FDT_MAX_NCELLS))
+ return -FDT_ERR_BADNCELLS;
+
+ return val;
+}
diff --git a/scripts/dtc/libfdt/fdt_empty_tree.c b/scripts/dtc/libfdt/fdt_empty_tree.c
new file mode 100644
index 0000000..f2ae9b7
--- /dev/null
+++ b/scripts/dtc/libfdt/fdt_empty_tree.c
@@ -0,0 +1,83 @@
+/*
+ * libfdt - Flat Device Tree manipulation
+ * Copyright (C) 2012 David Gibson, IBM Corporation.
+ *
+ * libfdt is dual licensed: you can use it either under the terms of
+ * the GPL, or the BSD license, at your option.
+ *
+ * a) This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ *
+ * Alternatively,
+ *
+ * b) Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ * 2. Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include "libfdt_env.h"
+
+#include <fdt.h>
+#include <libfdt.h>
+
+#include "libfdt_internal.h"
+
+int fdt_create_empty_tree(void *buf, int bufsize)
+{
+ int err;
+
+ err = fdt_create(buf, bufsize);
+ if (err)
+ return err;
+
+ err = fdt_finish_reservemap(buf);
+ if (err)
+ return err;
+
+ err = fdt_begin_node(buf, "");
+ if (err)
+ return err;
+
+ err = fdt_end_node(buf);
+ if (err)
+ return err;
+
+ err = fdt_finish(buf);
+ if (err)
+ return err;
+
+ return fdt_open_into(buf, buf, bufsize);
+}
diff --git a/scripts/dtc/libfdt/fdt_overlay.c b/scripts/dtc/libfdt/fdt_overlay.c
new file mode 100644
index 0000000..bf75388
--- /dev/null
+++ b/scripts/dtc/libfdt/fdt_overlay.c
@@ -0,0 +1,912 @@
+/*
+ * libfdt - Flat Device Tree manipulation
+ * Copyright (C) 2016 Free Electrons
+ * Copyright (C) 2016 NextThing Co.
+ *
+ * libfdt is dual licensed: you can use it either under the terms of
+ * the GPL, or the BSD license, at your option.
+ *
+ * a) This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ *
+ * Alternatively,
+ *
+ * b) Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ * 2. Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include "libfdt_env.h"
+
+#include <fdt.h>
+#include <libfdt.h>
+
+#include "libfdt_internal.h"
+
+/**
+ * overlay_get_target_phandle - retrieves the target phandle of a fragment
+ * @fdto: pointer to the device tree overlay blob
+ * @fragment: node offset of the fragment in the overlay
+ *
+ * overlay_get_target_phandle() retrieves the target phandle of an
+ * overlay fragment when that fragment uses a phandle (target
+ * property) instead of a path (target-path property).
+ *
+ * returns:
+ * the phandle pointed by the target property
+ * 0, if the phandle was not found
+ * -1, if the phandle was malformed
+ */
+static uint32_t overlay_get_target_phandle(const void *fdto, int fragment)
+{
+ const fdt32_t *val;
+ int len;
+
+ val = fdt_getprop(fdto, fragment, "target", &len);
+ if (!val)
+ return 0;
+
+ if ((len != sizeof(*val)) || (fdt32_to_cpu(*val) == (uint32_t)-1))
+ return (uint32_t)-1;
+
+ return fdt32_to_cpu(*val);
+}
+
+/**
+ * overlay_get_target - retrieves the offset of a fragment's target
+ * @fdt: Base device tree blob
+ * @fdto: Device tree overlay blob
+ * @fragment: node offset of the fragment in the overlay
+ * @pathp: pointer which receives the path of the target (or NULL)
+ *
+ * overlay_get_target() retrieves the target offset in the base
+ * device tree of a fragment, no matter how the actual targetting is
+ * done (through a phandle or a path)
+ *
+ * returns:
+ * the targetted node offset in the base device tree
+ * Negative error code on error
+ */
+static int overlay_get_target(const void *fdt, const void *fdto,
+ int fragment, char const **pathp)
+{
+ uint32_t phandle;
+ const char *path = NULL;
+ int path_len = 0, ret;
+
+ /* Try first to do a phandle based lookup */
+ phandle = overlay_get_target_phandle(fdto, fragment);
+ if (phandle == (uint32_t)-1)
+ return -FDT_ERR_BADPHANDLE;
+
+ /* no phandle, try path */
+ if (!phandle) {
+ /* And then a path based lookup */
+ path = fdt_getprop(fdto, fragment, "target-path", &path_len);
+ if (path)
+ ret = fdt_path_offset(fdt, path);
+ else
+ ret = path_len;
+ } else
+ ret = fdt_node_offset_by_phandle(fdt, phandle);
+
+ /*
+ * If we haven't found either a target or a
+ * target-path property in a node that contains a
+ * __overlay__ subnode (we wouldn't be called
+ * otherwise), consider it a improperly written
+ * overlay
+ */
+ if (ret < 0 && path_len == -FDT_ERR_NOTFOUND)
+ ret = -FDT_ERR_BADOVERLAY;
+
+ /* return on error */
+ if (ret < 0)
+ return ret;
+
+ /* return pointer to path (if available) */
+ if (pathp)
+ *pathp = path ? path : NULL;
+
+ return ret;
+}
+
+/**
+ * overlay_phandle_add_offset - Increases a phandle by an offset
+ * @fdt: Base device tree blob
+ * @node: Device tree overlay blob
+ * @name: Name of the property to modify (phandle or linux,phandle)
+ * @delta: offset to apply
+ *
+ * overlay_phandle_add_offset() increments a node phandle by a given
+ * offset.
+ *
+ * returns:
+ * 0 on success.
+ * Negative error code on error
+ */
+static int overlay_phandle_add_offset(void *fdt, int node,
+ const char *name, uint32_t delta)
+{
+ const fdt32_t *val;
+ uint32_t adj_val;
+ int len;
+
+ val = fdt_getprop(fdt, node, name, &len);
+ if (!val)
+ return len;
+
+ if (len != sizeof(*val))
+ return -FDT_ERR_BADPHANDLE;
+
+ adj_val = fdt32_to_cpu(*val);
+ if ((adj_val + delta) < adj_val)
+ return -FDT_ERR_NOPHANDLES;
+
+ adj_val += delta;
+ if (adj_val == (uint32_t)-1)
+ return -FDT_ERR_NOPHANDLES;
+
+ return fdt_setprop_inplace_u32(fdt, node, name, adj_val);
+}
+
+/**
+ * overlay_adjust_node_phandles - Offsets the phandles of a node
+ * @fdto: Device tree overlay blob
+ * @node: Offset of the node we want to adjust
+ * @delta: Offset to shift the phandles of
+ *
+ * overlay_adjust_node_phandles() adds a constant to all the phandles
+ * of a given node. This is mainly use as part of the overlay
+ * application process, when we want to update all the overlay
+ * phandles to not conflict with the overlays of the base device tree.
+ *
+ * returns:
+ * 0 on success
+ * Negative error code on failure
+ */
+static int overlay_adjust_node_phandles(void *fdto, int node,
+ uint32_t delta)
+{
+ int child;
+ int ret;
+
+ ret = overlay_phandle_add_offset(fdto, node, "phandle", delta);
+ if (ret && ret != -FDT_ERR_NOTFOUND)
+ return ret;
+
+ ret = overlay_phandle_add_offset(fdto, node, "linux,phandle", delta);
+ if (ret && ret != -FDT_ERR_NOTFOUND)
+ return ret;
+
+ fdt_for_each_subnode(child, fdto, node) {
+ ret = overlay_adjust_node_phandles(fdto, child, delta);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+/**
+ * overlay_adjust_local_phandles - Adjust the phandles of a whole overlay
+ * @fdto: Device tree overlay blob
+ * @delta: Offset to shift the phandles of
+ *
+ * overlay_adjust_local_phandles() adds a constant to all the
+ * phandles of an overlay. This is mainly use as part of the overlay
+ * application process, when we want to update all the overlay
+ * phandles to not conflict with the overlays of the base device tree.
+ *
+ * returns:
+ * 0 on success
+ * Negative error code on failure
+ */
+static int overlay_adjust_local_phandles(void *fdto, uint32_t delta)
+{
+ /*
+ * Start adjusting the phandles from the overlay root
+ */
+ return overlay_adjust_node_phandles(fdto, 0, delta);
+}
+
+/**
+ * overlay_update_local_node_references - Adjust the overlay references
+ * @fdto: Device tree overlay blob
+ * @tree_node: Node offset of the node to operate on
+ * @fixup_node: Node offset of the matching local fixups node
+ * @delta: Offset to shift the phandles of
+ *
+ * overlay_update_local_nodes_references() update the phandles
+ * pointing to a node within the device tree overlay by adding a
+ * constant delta.
+ *
+ * This is mainly used as part of a device tree application process,
+ * where you want the device tree overlays phandles to not conflict
+ * with the ones from the base device tree before merging them.
+ *
+ * returns:
+ * 0 on success
+ * Negative error code on failure
+ */
+static int overlay_update_local_node_references(void *fdto,
+ int tree_node,
+ int fixup_node,
+ uint32_t delta)
+{
+ int fixup_prop;
+ int fixup_child;
+ int ret;
+
+ fdt_for_each_property_offset(fixup_prop, fdto, fixup_node) {
+ const fdt32_t *fixup_val;
+ const char *tree_val;
+ const char *name;
+ int fixup_len;
+ int tree_len;
+ int i;
+
+ fixup_val = fdt_getprop_by_offset(fdto, fixup_prop,
+ &name, &fixup_len);
+ if (!fixup_val)
+ return fixup_len;
+
+ if (fixup_len % sizeof(uint32_t))
+ return -FDT_ERR_BADOVERLAY;
+
+ tree_val = fdt_getprop(fdto, tree_node, name, &tree_len);
+ if (!tree_val) {
+ if (tree_len == -FDT_ERR_NOTFOUND)
+ return -FDT_ERR_BADOVERLAY;
+
+ return tree_len;
+ }
+
+ for (i = 0; i < (fixup_len / sizeof(uint32_t)); i++) {
+ fdt32_t adj_val;
+ uint32_t poffset;
+
+ poffset = fdt32_to_cpu(fixup_val[i]);
+
+ /*
+ * phandles to fixup can be unaligned.
+ *
+ * Use a memcpy for the architectures that do
+ * not support unaligned accesses.
+ */
+ memcpy(&adj_val, tree_val + poffset, sizeof(adj_val));
+
+ adj_val = cpu_to_fdt32(fdt32_to_cpu(adj_val) + delta);
+
+ ret = fdt_setprop_inplace_namelen_partial(fdto,
+ tree_node,
+ name,
+ strlen(name),
+ poffset,
+ &adj_val,
+ sizeof(adj_val));
+ if (ret == -FDT_ERR_NOSPACE)
+ return -FDT_ERR_BADOVERLAY;
+
+ if (ret)
+ return ret;
+ }
+ }
+
+ fdt_for_each_subnode(fixup_child, fdto, fixup_node) {
+ const char *fixup_child_name = fdt_get_name(fdto, fixup_child,
+ NULL);
+ int tree_child;
+
+ tree_child = fdt_subnode_offset(fdto, tree_node,
+ fixup_child_name);
+ if (tree_child == -FDT_ERR_NOTFOUND)
+ return -FDT_ERR_BADOVERLAY;
+ if (tree_child < 0)
+ return tree_child;
+
+ ret = overlay_update_local_node_references(fdto,
+ tree_child,
+ fixup_child,
+ delta);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+/**
+ * overlay_update_local_references - Adjust the overlay references
+ * @fdto: Device tree overlay blob
+ * @delta: Offset to shift the phandles of
+ *
+ * overlay_update_local_references() update all the phandles pointing
+ * to a node within the device tree overlay by adding a constant
+ * delta to not conflict with the base overlay.
+ *
+ * This is mainly used as part of a device tree application process,
+ * where you want the device tree overlays phandles to not conflict
+ * with the ones from the base device tree before merging them.
+ *
+ * returns:
+ * 0 on success
+ * Negative error code on failure
+ */
+static int overlay_update_local_references(void *fdto, uint32_t delta)
+{
+ int fixups;
+
+ fixups = fdt_path_offset(fdto, "/__local_fixups__");
+ if (fixups < 0) {
+ /* There's no local phandles to adjust, bail out */
+ if (fixups == -FDT_ERR_NOTFOUND)
+ return 0;
+
+ return fixups;
+ }
+
+ /*
+ * Update our local references from the root of the tree
+ */
+ return overlay_update_local_node_references(fdto, 0, fixups,
+ delta);
+}
+
+/**
+ * overlay_fixup_one_phandle - Set an overlay phandle to the base one
+ * @fdt: Base Device Tree blob
+ * @fdto: Device tree overlay blob
+ * @symbols_off: Node offset of the symbols node in the base device tree
+ * @path: Path to a node holding a phandle in the overlay
+ * @path_len: number of path characters to consider
+ * @name: Name of the property holding the phandle reference in the overlay
+ * @name_len: number of name characters to consider
+ * @poffset: Offset within the overlay property where the phandle is stored
+ * @label: Label of the node referenced by the phandle
+ *
+ * overlay_fixup_one_phandle() resolves an overlay phandle pointing to
+ * a node in the base device tree.
+ *
+ * This is part of the device tree overlay application process, when
+ * you want all the phandles in the overlay to point to the actual
+ * base dt nodes.
+ *
+ * returns:
+ * 0 on success
+ * Negative error code on failure
+ */
+static int overlay_fixup_one_phandle(void *fdt, void *fdto,
+ int symbols_off,
+ const char *path, uint32_t path_len,
+ const char *name, uint32_t name_len,
+ int poffset, const char *label)
+{
+ const char *symbol_path;
+ uint32_t phandle;
+ fdt32_t phandle_prop;
+ int symbol_off, fixup_off;
+ int prop_len;
+
+ if (symbols_off < 0)
+ return symbols_off;
+
+ symbol_path = fdt_getprop(fdt, symbols_off, label,
+ &prop_len);
+ if (!symbol_path)
+ return prop_len;
+
+ symbol_off = fdt_path_offset(fdt, symbol_path);
+ if (symbol_off < 0)
+ return symbol_off;
+
+ phandle = fdt_get_phandle(fdt, symbol_off);
+ if (!phandle)
+ return -FDT_ERR_NOTFOUND;
+
+ fixup_off = fdt_path_offset_namelen(fdto, path, path_len);
+ if (fixup_off == -FDT_ERR_NOTFOUND)
+ return -FDT_ERR_BADOVERLAY;
+ if (fixup_off < 0)
+ return fixup_off;
+
+ phandle_prop = cpu_to_fdt32(phandle);
+ return fdt_setprop_inplace_namelen_partial(fdto, fixup_off,
+ name, name_len, poffset,
+ &phandle_prop,
+ sizeof(phandle_prop));
+};
+
+/**
+ * overlay_fixup_phandle - Set an overlay phandle to the base one
+ * @fdt: Base Device Tree blob
+ * @fdto: Device tree overlay blob
+ * @symbols_off: Node offset of the symbols node in the base device tree
+ * @property: Property offset in the overlay holding the list of fixups
+ *
+ * overlay_fixup_phandle() resolves all the overlay phandles pointed
+ * to in a __fixups__ property, and updates them to match the phandles
+ * in use in the base device tree.
+ *
+ * This is part of the device tree overlay application process, when
+ * you want all the phandles in the overlay to point to the actual
+ * base dt nodes.
+ *
+ * returns:
+ * 0 on success
+ * Negative error code on failure
+ */
+static int overlay_fixup_phandle(void *fdt, void *fdto, int symbols_off,
+ int property)
+{
+ const char *value;
+ const char *label;
+ int len;
+
+ value = fdt_getprop_by_offset(fdto, property,
+ &label, &len);
+ if (!value) {
+ if (len == -FDT_ERR_NOTFOUND)
+ return -FDT_ERR_INTERNAL;
+
+ return len;
+ }
+
+ do {
+ const char *path, *name, *fixup_end;
+ const char *fixup_str = value;
+ uint32_t path_len, name_len;
+ uint32_t fixup_len;
+ char *sep, *endptr;
+ int poffset, ret;
+
+ fixup_end = memchr(value, '\0', len);
+ if (!fixup_end)
+ return -FDT_ERR_BADOVERLAY;
+ fixup_len = fixup_end - fixup_str;
+
+ len -= fixup_len + 1;
+ value += fixup_len + 1;
+
+ path = fixup_str;
+ sep = memchr(fixup_str, ':', fixup_len);
+ if (!sep || *sep != ':')
+ return -FDT_ERR_BADOVERLAY;
+
+ path_len = sep - path;
+ if (path_len == (fixup_len - 1))
+ return -FDT_ERR_BADOVERLAY;
+
+ fixup_len -= path_len + 1;
+ name = sep + 1;
+ sep = memchr(name, ':', fixup_len);
+ if (!sep || *sep != ':')
+ return -FDT_ERR_BADOVERLAY;
+
+ name_len = sep - name;
+ if (!name_len)
+ return -FDT_ERR_BADOVERLAY;
+
+ poffset = strtoul(sep + 1, &endptr, 10);
+ if ((*endptr != '\0') || (endptr <= (sep + 1)))
+ return -FDT_ERR_BADOVERLAY;
+
+ ret = overlay_fixup_one_phandle(fdt, fdto, symbols_off,
+ path, path_len, name, name_len,
+ poffset, label);
+ if (ret)
+ return ret;
+ } while (len > 0);
+
+ return 0;
+}
+
+/**
+ * overlay_fixup_phandles - Resolve the overlay phandles to the base
+ * device tree
+ * @fdt: Base Device Tree blob
+ * @fdto: Device tree overlay blob
+ *
+ * overlay_fixup_phandles() resolves all the overlay phandles pointing
+ * to nodes in the base device tree.
+ *
+ * This is one of the steps of the device tree overlay application
+ * process, when you want all the phandles in the overlay to point to
+ * the actual base dt nodes.
+ *
+ * returns:
+ * 0 on success
+ * Negative error code on failure
+ */
+static int overlay_fixup_phandles(void *fdt, void *fdto)
+{
+ int fixups_off, symbols_off;
+ int property;
+
+ /* We can have overlays without any fixups */
+ fixups_off = fdt_path_offset(fdto, "/__fixups__");
+ if (fixups_off == -FDT_ERR_NOTFOUND)
+ return 0; /* nothing to do */
+ if (fixups_off < 0)
+ return fixups_off;
+
+ /* And base DTs without symbols */
+ symbols_off = fdt_path_offset(fdt, "/__symbols__");
+ if ((symbols_off < 0 && (symbols_off != -FDT_ERR_NOTFOUND)))
+ return symbols_off;
+
+ fdt_for_each_property_offset(property, fdto, fixups_off) {
+ int ret;
+
+ ret = overlay_fixup_phandle(fdt, fdto, symbols_off, property);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+/**
+ * overlay_apply_node - Merges a node into the base device tree
+ * @fdt: Base Device Tree blob
+ * @target: Node offset in the base device tree to apply the fragment to
+ * @fdto: Device tree overlay blob
+ * @node: Node offset in the overlay holding the changes to merge
+ *
+ * overlay_apply_node() merges a node into a target base device tree
+ * node pointed.
+ *
+ * This is part of the final step in the device tree overlay
+ * application process, when all the phandles have been adjusted and
+ * resolved and you just have to merge overlay into the base device
+ * tree.
+ *
+ * returns:
+ * 0 on success
+ * Negative error code on failure
+ */
+static int overlay_apply_node(void *fdt, int target,
+ void *fdto, int node)
+{
+ int property;
+ int subnode;
+
+ fdt_for_each_property_offset(property, fdto, node) {
+ const char *name;
+ const void *prop;
+ int prop_len;
+ int ret;
+
+ prop = fdt_getprop_by_offset(fdto, property, &name,
+ &prop_len);
+ if (prop_len == -FDT_ERR_NOTFOUND)
+ return -FDT_ERR_INTERNAL;
+ if (prop_len < 0)
+ return prop_len;
+
+ ret = fdt_setprop(fdt, target, name, prop, prop_len);
+ if (ret)
+ return ret;
+ }
+
+ fdt_for_each_subnode(subnode, fdto, node) {
+ const char *name = fdt_get_name(fdto, subnode, NULL);
+ int nnode;
+ int ret;
+
+ nnode = fdt_add_subnode(fdt, target, name);
+ if (nnode == -FDT_ERR_EXISTS) {
+ nnode = fdt_subnode_offset(fdt, target, name);
+ if (nnode == -FDT_ERR_NOTFOUND)
+ return -FDT_ERR_INTERNAL;
+ }
+
+ if (nnode < 0)
+ return nnode;
+
+ ret = overlay_apply_node(fdt, nnode, fdto, subnode);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+/**
+ * overlay_merge - Merge an overlay into its base device tree
+ * @fdt: Base Device Tree blob
+ * @fdto: Device tree overlay blob
+ *
+ * overlay_merge() merges an overlay into its base device tree.
+ *
+ * This is the next to last step in the device tree overlay application
+ * process, when all the phandles have been adjusted and resolved and
+ * you just have to merge overlay into the base device tree.
+ *
+ * returns:
+ * 0 on success
+ * Negative error code on failure
+ */
+static int overlay_merge(void *fdt, void *fdto)
+{
+ int fragment;
+
+ fdt_for_each_subnode(fragment, fdto, 0) {
+ int overlay;
+ int target;
+ int ret;
+
+ /*
+ * Each fragments will have an __overlay__ node. If
+ * they don't, it's not supposed to be merged
+ */
+ overlay = fdt_subnode_offset(fdto, fragment, "__overlay__");
+ if (overlay == -FDT_ERR_NOTFOUND)
+ continue;
+
+ if (overlay < 0)
+ return overlay;
+
+ target = overlay_get_target(fdt, fdto, fragment, NULL);
+ if (target < 0)
+ return target;
+
+ ret = overlay_apply_node(fdt, target, fdto, overlay);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+static int get_path_len(const void *fdt, int nodeoffset)
+{
+ int len = 0, namelen;
+ const char *name;
+
+ FDT_CHECK_HEADER(fdt);
+
+ for (;;) {
+ name = fdt_get_name(fdt, nodeoffset, &namelen);
+ if (!name)
+ return namelen;
+
+ /* root? we're done */
+ if (namelen == 0)
+ break;
+
+ nodeoffset = fdt_parent_offset(fdt, nodeoffset);
+ if (nodeoffset < 0)
+ return nodeoffset;
+ len += namelen + 1;
+ }
+
+ /* in case of root pretend it's "/" */
+ if (len == 0)
+ len++;
+ return len;
+}
+
+/**
+ * overlay_symbol_update - Update the symbols of base tree after a merge
+ * @fdt: Base Device Tree blob
+ * @fdto: Device tree overlay blob
+ *
+ * overlay_symbol_update() updates the symbols of the base tree with the
+ * symbols of the applied overlay
+ *
+ * This is the last step in the device tree overlay application
+ * process, allowing the reference of overlay symbols by subsequent
+ * overlay operations.
+ *
+ * returns:
+ * 0 on success
+ * Negative error code on failure
+ */
+static int overlay_symbol_update(void *fdt, void *fdto)
+{
+ int root_sym, ov_sym, prop, path_len, fragment, target;
+ int len, frag_name_len, ret, rel_path_len;
+ const char *s, *e;
+ const char *path;
+ const char *name;
+ const char *frag_name;
+ const char *rel_path;
+ const char *target_path;
+ char *buf;
+ void *p;
+
+ ov_sym = fdt_subnode_offset(fdto, 0, "__symbols__");
+
+ /* if no overlay symbols exist no problem */
+ if (ov_sym < 0)
+ return 0;
+
+ root_sym = fdt_subnode_offset(fdt, 0, "__symbols__");
+
+ /* it no root symbols exist we should create them */
+ if (root_sym == -FDT_ERR_NOTFOUND)
+ root_sym = fdt_add_subnode(fdt, 0, "__symbols__");
+
+ /* any error is fatal now */
+ if (root_sym < 0)
+ return root_sym;
+
+ /* iterate over each overlay symbol */
+ fdt_for_each_property_offset(prop, fdto, ov_sym) {
+ path = fdt_getprop_by_offset(fdto, prop, &name, &path_len);
+ if (!path)
+ return path_len;
+
+ /* verify it's a string property (terminated by a single \0) */
+ if (path_len < 1 || memchr(path, '\0', path_len) != &path[path_len - 1])
+ return -FDT_ERR_BADVALUE;
+
+ /* keep end marker to avoid strlen() */
+ e = path + path_len;
+
+ /* format: /<fragment-name>/__overlay__/<relative-subnode-path> */
+
+ if (*path != '/')
+ return -FDT_ERR_BADVALUE;
+
+ /* get fragment name first */
+ s = strchr(path + 1, '/');
+ if (!s)
+ return -FDT_ERR_BADOVERLAY;
+
+ frag_name = path + 1;
+ frag_name_len = s - path - 1;
+
+ /* verify format; safe since "s" lies in \0 terminated prop */
+ len = sizeof("/__overlay__/") - 1;
+ if ((e - s) < len || memcmp(s, "/__overlay__/", len))
+ return -FDT_ERR_BADOVERLAY;
+
+ rel_path = s + len;
+ rel_path_len = e - rel_path;
+
+ /* find the fragment index in which the symbol lies */
+ ret = fdt_subnode_offset_namelen(fdto, 0, frag_name,
+ frag_name_len);
+ /* not found? */
+ if (ret < 0)
+ return -FDT_ERR_BADOVERLAY;
+ fragment = ret;
+
+ /* an __overlay__ subnode must exist */
+ ret = fdt_subnode_offset(fdto, fragment, "__overlay__");
+ if (ret < 0)
+ return -FDT_ERR_BADOVERLAY;
+
+ /* get the target of the fragment */
+ ret = overlay_get_target(fdt, fdto, fragment, &target_path);
+ if (ret < 0)
+ return ret;
+ target = ret;
+
+ /* if we have a target path use */
+ if (!target_path) {
+ ret = get_path_len(fdt, target);
+ if (ret < 0)
+ return ret;
+ len = ret;
+ } else {
+ len = strlen(target_path);
+ }
+
+ ret = fdt_setprop_placeholder(fdt, root_sym, name,
+ len + (len > 1) + rel_path_len + 1, &p);
+ if (ret < 0)
+ return ret;
+
+ if (!target_path) {
+ /* again in case setprop_placeholder changed it */
+ ret = overlay_get_target(fdt, fdto, fragment, &target_path);
+ if (ret < 0)
+ return ret;
+ target = ret;
+ }
+
+ buf = p;
+ if (len > 1) { /* target is not root */
+ if (!target_path) {
+ ret = fdt_get_path(fdt, target, buf, len + 1);
+ if (ret < 0)
+ return ret;
+ } else
+ memcpy(buf, target_path, len + 1);
+
+ } else
+ len--;
+
+ buf[len] = '/';
+ memcpy(buf + len + 1, rel_path, rel_path_len);
+ buf[len + 1 + rel_path_len] = '\0';
+ }
+
+ return 0;
+}
+
+int fdt_overlay_apply(void *fdt, void *fdto)
+{
+ uint32_t delta = fdt_get_max_phandle(fdt);
+ int ret;
+
+ FDT_CHECK_HEADER(fdt);
+ FDT_CHECK_HEADER(fdto);
+
+ ret = overlay_adjust_local_phandles(fdto, delta);
+ if (ret)
+ goto err;
+
+ ret = overlay_update_local_references(fdto, delta);
+ if (ret)
+ goto err;
+
+ ret = overlay_fixup_phandles(fdt, fdto);
+ if (ret)
+ goto err;
+
+ ret = overlay_merge(fdt, fdto);
+ if (ret)
+ goto err;
+
+ ret = overlay_symbol_update(fdt, fdto);
+ if (ret)
+ goto err;
+
+ /*
+ * The overlay has been damaged, erase its magic.
+ */
+ fdt_set_magic(fdto, ~0);
+
+ return 0;
+
+err:
+ /*
+ * The overlay might have been damaged, erase its magic.
+ */
+ fdt_set_magic(fdto, ~0);
+
+ /*
+ * The base device tree might have been damaged, erase its
+ * magic.
+ */
+ fdt_set_magic(fdt, ~0);
+
+ return ret;
+}
diff --git a/scripts/dtc/libfdt/fdt_ro.c b/scripts/dtc/libfdt/fdt_ro.c
new file mode 100644
index 0000000..dfb3236
--- /dev/null
+++ b/scripts/dtc/libfdt/fdt_ro.c
@@ -0,0 +1,773 @@
+/*
+ * libfdt - Flat Device Tree manipulation
+ * Copyright (C) 2006 David Gibson, IBM Corporation.
+ *
+ * libfdt is dual licensed: you can use it either under the terms of
+ * the GPL, or the BSD license, at your option.
+ *
+ * a) This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ *
+ * Alternatively,
+ *
+ * b) Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ * 2. Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include "libfdt_env.h"
+
+#include <fdt.h>
+#include <libfdt.h>
+
+#include "libfdt_internal.h"
+
+static int fdt_nodename_eq_(const void *fdt, int offset,
+ const char *s, int len)
+{
+ int olen;
+ const char *p = fdt_get_name(fdt, offset, &olen);
+
+ if (!p || olen < len)
+ /* short match */
+ return 0;
+
+ if (memcmp(p, s, len) != 0)
+ return 0;
+
+ if (p[len] == '\0')
+ return 1;
+ else if (!memchr(s, '@', len) && (p[len] == '@'))
+ return 1;
+ else
+ return 0;
+}
+
+const char *fdt_string(const void *fdt, int stroffset)
+{
+ return (const char *)fdt + fdt_off_dt_strings(fdt) + stroffset;
+}
+
+static int fdt_string_eq_(const void *fdt, int stroffset,
+ const char *s, int len)
+{
+ const char *p = fdt_string(fdt, stroffset);
+
+ return (strlen(p) == len) && (memcmp(p, s, len) == 0);
+}
+
+uint32_t fdt_get_max_phandle(const void *fdt)
+{
+ uint32_t max_phandle = 0;
+ int offset;
+
+ for (offset = fdt_next_node(fdt, -1, NULL);;
+ offset = fdt_next_node(fdt, offset, NULL)) {
+ uint32_t phandle;
+
+ if (offset == -FDT_ERR_NOTFOUND)
+ return max_phandle;
+
+ if (offset < 0)
+ return (uint32_t)-1;
+
+ phandle = fdt_get_phandle(fdt, offset);
+ if (phandle == (uint32_t)-1)
+ continue;
+
+ if (phandle > max_phandle)
+ max_phandle = phandle;
+ }
+
+ return 0;
+}
+
+int fdt_get_mem_rsv(const void *fdt, int n, uint64_t *address, uint64_t *size)
+{
+ FDT_CHECK_HEADER(fdt);
+ *address = fdt64_to_cpu(fdt_mem_rsv_(fdt, n)->address);
+ *size = fdt64_to_cpu(fdt_mem_rsv_(fdt, n)->size);
+ return 0;
+}
+
+int fdt_num_mem_rsv(const void *fdt)
+{
+ int i = 0;
+
+ while (fdt64_to_cpu(fdt_mem_rsv_(fdt, i)->size) != 0)
+ i++;
+ return i;
+}
+
+static int nextprop_(const void *fdt, int offset)
+{
+ uint32_t tag;
+ int nextoffset;
+
+ do {
+ tag = fdt_next_tag(fdt, offset, &nextoffset);
+
+ switch (tag) {
+ case FDT_END:
+ if (nextoffset >= 0)
+ return -FDT_ERR_BADSTRUCTURE;
+ else
+ return nextoffset;
+
+ case FDT_PROP:
+ return offset;
+ }
+ offset = nextoffset;
+ } while (tag == FDT_NOP);
+
+ return -FDT_ERR_NOTFOUND;
+}
+
+int fdt_subnode_offset_namelen(const void *fdt, int offset,
+ const char *name, int namelen)
+{
+ int depth;
+
+ FDT_CHECK_HEADER(fdt);
+
+ for (depth = 0;
+ (offset >= 0) && (depth >= 0);
+ offset = fdt_next_node(fdt, offset, &depth))
+ if ((depth == 1)
+ && fdt_nodename_eq_(fdt, offset, name, namelen))
+ return offset;
+
+ if (depth < 0)
+ return -FDT_ERR_NOTFOUND;
+ return offset; /* error */
+}
+
+int fdt_subnode_offset(const void *fdt, int parentoffset,
+ const char *name)
+{
+ return fdt_subnode_offset_namelen(fdt, parentoffset, name, strlen(name));
+}
+
+int fdt_path_offset_namelen(const void *fdt, const char *path, int namelen)
+{
+ const char *end = path + namelen;
+ const char *p = path;
+ int offset = 0;
+
+ FDT_CHECK_HEADER(fdt);
+
+ /* see if we have an alias */
+ if (*path != '/') {
+ const char *q = memchr(path, '/', end - p);
+
+ if (!q)
+ q = end;
+
+ p = fdt_get_alias_namelen(fdt, p, q - p);
+ if (!p)
+ return -FDT_ERR_BADPATH;
+ offset = fdt_path_offset(fdt, p);
+
+ p = q;
+ }
+
+ while (p < end) {
+ const char *q;
+
+ while (*p == '/') {
+ p++;
+ if (p == end)
+ return offset;
+ }
+ q = memchr(p, '/', end - p);
+ if (! q)
+ q = end;
+
+ offset = fdt_subnode_offset_namelen(fdt, offset, p, q-p);
+ if (offset < 0)
+ return offset;
+
+ p = q;
+ }
+
+ return offset;
+}
+
+int fdt_path_offset(const void *fdt, const char *path)
+{
+ return fdt_path_offset_namelen(fdt, path, strlen(path));
+}
+
+const char *fdt_get_name(const void *fdt, int nodeoffset, int *len)
+{
+ const struct fdt_node_header *nh = fdt_offset_ptr_(fdt, nodeoffset);
+ const char *nameptr;
+ int err;
+
+ if (((err = fdt_check_header(fdt)) != 0)
+ || ((err = fdt_check_node_offset_(fdt, nodeoffset)) < 0))
+ goto fail;
+
+ nameptr = nh->name;
+
+ if (fdt_version(fdt) < 0x10) {
+ /*
+ * For old FDT versions, match the naming conventions of V16:
+ * give only the leaf name (after all /). The actual tree
+ * contents are loosely checked.
+ */
+ const char *leaf;
+ leaf = strrchr(nameptr, '/');
+ if (leaf == NULL) {
+ err = -FDT_ERR_BADSTRUCTURE;
+ goto fail;
+ }
+ nameptr = leaf+1;
+ }
+
+ if (len)
+ *len = strlen(nameptr);
+
+ return nameptr;
+
+ fail:
+ if (len)
+ *len = err;
+ return NULL;
+}
+
+int fdt_first_property_offset(const void *fdt, int nodeoffset)
+{
+ int offset;
+
+ if ((offset = fdt_check_node_offset_(fdt, nodeoffset)) < 0)
+ return offset;
+
+ return nextprop_(fdt, offset);
+}
+
+int fdt_next_property_offset(const void *fdt, int offset)
+{
+ if ((offset = fdt_check_prop_offset_(fdt, offset)) < 0)
+ return offset;
+
+ return nextprop_(fdt, offset);
+}
+
+static const struct fdt_property *fdt_get_property_by_offset_(const void *fdt,
+ int offset,
+ int *lenp)
+{
+ int err;
+ const struct fdt_property *prop;
+
+ if ((err = fdt_check_prop_offset_(fdt, offset)) < 0) {
+ if (lenp)
+ *lenp = err;
+ return NULL;
+ }
+
+ prop = fdt_offset_ptr_(fdt, offset);
+
+ if (lenp)
+ *lenp = fdt32_to_cpu(prop->len);
+
+ return prop;
+}
+
+const struct fdt_property *fdt_get_property_by_offset(const void *fdt,
+ int offset,
+ int *lenp)
+{
+ /* Prior to version 16, properties may need realignment
+ * and this API does not work. fdt_getprop_*() will, however. */
+
+ if (fdt_version(fdt) < 0x10) {
+ if (lenp)
+ *lenp = -FDT_ERR_BADVERSION;
+ return NULL;
+ }
+
+ return fdt_get_property_by_offset_(fdt, offset, lenp);
+}
+
+static const struct fdt_property *fdt_get_property_namelen_(const void *fdt,
+ int offset,
+ const char *name,
+ int namelen,
+ int *lenp,
+ int *poffset)
+{
+ for (offset = fdt_first_property_offset(fdt, offset);
+ (offset >= 0);
+ (offset = fdt_next_property_offset(fdt, offset))) {
+ const struct fdt_property *prop;
+
+ if (!(prop = fdt_get_property_by_offset_(fdt, offset, lenp))) {
+ offset = -FDT_ERR_INTERNAL;
+ break;
+ }
+ if (fdt_string_eq_(fdt, fdt32_to_cpu(prop->nameoff),
+ name, namelen)) {
+ if (poffset)
+ *poffset = offset;
+ return prop;
+ }
+ }
+
+ if (lenp)
+ *lenp = offset;
+ return NULL;
+}
+
+
+const struct fdt_property *fdt_get_property_namelen(const void *fdt,
+ int offset,
+ const char *name,
+ int namelen, int *lenp)
+{
+ /* Prior to version 16, properties may need realignment
+ * and this API does not work. fdt_getprop_*() will, however. */
+ if (fdt_version(fdt) < 0x10) {
+ if (lenp)
+ *lenp = -FDT_ERR_BADVERSION;
+ return NULL;
+ }
+
+ return fdt_get_property_namelen_(fdt, offset, name, namelen, lenp,
+ NULL);
+}
+
+
+const struct fdt_property *fdt_get_property(const void *fdt,
+ int nodeoffset,
+ const char *name, int *lenp)
+{
+ return fdt_get_property_namelen(fdt, nodeoffset, name,
+ strlen(name), lenp);
+}
+
+const void *fdt_getprop_namelen(const void *fdt, int nodeoffset,
+ const char *name, int namelen, int *lenp)
+{
+ int poffset;
+ const struct fdt_property *prop;
+
+ prop = fdt_get_property_namelen_(fdt, nodeoffset, name, namelen, lenp,
+ &poffset);
+ if (!prop)
+ return NULL;
+
+ /* Handle realignment */
+ if (fdt_version(fdt) < 0x10 && (poffset + sizeof(*prop)) % 8 &&
+ fdt32_to_cpu(prop->len) >= 8)
+ return prop->data + 4;
+ return prop->data;
+}
+
+const void *fdt_getprop_by_offset(const void *fdt, int offset,
+ const char **namep, int *lenp)
+{
+ const struct fdt_property *prop;
+
+ prop = fdt_get_property_by_offset_(fdt, offset, lenp);
+ if (!prop)
+ return NULL;
+ if (namep)
+ *namep = fdt_string(fdt, fdt32_to_cpu(prop->nameoff));
+
+ /* Handle realignment */
+ if (fdt_version(fdt) < 0x10 && (offset + sizeof(*prop)) % 8 &&
+ fdt32_to_cpu(prop->len) >= 8)
+ return prop->data + 4;
+ return prop->data;
+}
+
+const void *fdt_getprop(const void *fdt, int nodeoffset,
+ const char *name, int *lenp)
+{
+ return fdt_getprop_namelen(fdt, nodeoffset, name, strlen(name), lenp);
+}
+
+uint32_t fdt_get_phandle(const void *fdt, int nodeoffset)
+{
+ const fdt32_t *php;
+ int len;
+
+ /* FIXME: This is a bit sub-optimal, since we potentially scan
+ * over all the properties twice. */
+ php = fdt_getprop(fdt, nodeoffset, "phandle", &len);
+ if (!php || (len != sizeof(*php))) {
+ php = fdt_getprop(fdt, nodeoffset, "linux,phandle", &len);
+ if (!php || (len != sizeof(*php)))
+ return 0;
+ }
+
+ return fdt32_to_cpu(*php);
+}
+
+const char *fdt_get_alias_namelen(const void *fdt,
+ const char *name, int namelen)
+{
+ int aliasoffset;
+
+ aliasoffset = fdt_path_offset(fdt, "/aliases");
+ if (aliasoffset < 0)
+ return NULL;
+
+ return fdt_getprop_namelen(fdt, aliasoffset, name, namelen, NULL);
+}
+
+const char *fdt_get_alias(const void *fdt, const char *name)
+{
+ return fdt_get_alias_namelen(fdt, name, strlen(name));
+}
+
+int fdt_get_path(const void *fdt, int nodeoffset, char *buf, int buflen)
+{
+ int pdepth = 0, p = 0;
+ int offset, depth, namelen;
+ const char *name;
+
+ FDT_CHECK_HEADER(fdt);
+
+ if (buflen < 2)
+ return -FDT_ERR_NOSPACE;
+
+ for (offset = 0, depth = 0;
+ (offset >= 0) && (offset <= nodeoffset);
+ offset = fdt_next_node(fdt, offset, &depth)) {
+ while (pdepth > depth) {
+ do {
+ p--;
+ } while (buf[p-1] != '/');
+ pdepth--;
+ }
+
+ if (pdepth >= depth) {
+ name = fdt_get_name(fdt, offset, &namelen);
+ if (!name)
+ return namelen;
+ if ((p + namelen + 1) <= buflen) {
+ memcpy(buf + p, name, namelen);
+ p += namelen;
+ buf[p++] = '/';
+ pdepth++;
+ }
+ }
+
+ if (offset == nodeoffset) {
+ if (pdepth < (depth + 1))
+ return -FDT_ERR_NOSPACE;
+
+ if (p > 1) /* special case so that root path is "/", not "" */
+ p--;
+ buf[p] = '\0';
+ return 0;
+ }
+ }
+
+ if ((offset == -FDT_ERR_NOTFOUND) || (offset >= 0))
+ return -FDT_ERR_BADOFFSET;
+ else if (offset == -FDT_ERR_BADOFFSET)
+ return -FDT_ERR_BADSTRUCTURE;
+
+ return offset; /* error from fdt_next_node() */
+}
+
+int fdt_supernode_atdepth_offset(const void *fdt, int nodeoffset,
+ int supernodedepth, int *nodedepth)
+{
+ int offset, depth;
+ int supernodeoffset = -FDT_ERR_INTERNAL;
+
+ FDT_CHECK_HEADER(fdt);
+
+ if (supernodedepth < 0)
+ return -FDT_ERR_NOTFOUND;
+
+ for (offset = 0, depth = 0;
+ (offset >= 0) && (offset <= nodeoffset);
+ offset = fdt_next_node(fdt, offset, &depth)) {
+ if (depth == supernodedepth)
+ supernodeoffset = offset;
+
+ if (offset == nodeoffset) {
+ if (nodedepth)
+ *nodedepth = depth;
+
+ if (supernodedepth > depth)
+ return -FDT_ERR_NOTFOUND;
+ else
+ return supernodeoffset;
+ }
+ }
+
+ if ((offset == -FDT_ERR_NOTFOUND) || (offset >= 0))
+ return -FDT_ERR_BADOFFSET;
+ else if (offset == -FDT_ERR_BADOFFSET)
+ return -FDT_ERR_BADSTRUCTURE;
+
+ return offset; /* error from fdt_next_node() */
+}
+
+int fdt_node_depth(const void *fdt, int nodeoffset)
+{
+ int nodedepth;
+ int err;
+
+ err = fdt_supernode_atdepth_offset(fdt, nodeoffset, 0, &nodedepth);
+ if (err)
+ return (err < 0) ? err : -FDT_ERR_INTERNAL;
+ return nodedepth;
+}
+
+int fdt_parent_offset(const void *fdt, int nodeoffset)
+{
+ int nodedepth = fdt_node_depth(fdt, nodeoffset);
+
+ if (nodedepth < 0)
+ return nodedepth;
+ return fdt_supernode_atdepth_offset(fdt, nodeoffset,
+ nodedepth - 1, NULL);
+}
+
+int fdt_node_offset_by_prop_value(const void *fdt, int startoffset,
+ const char *propname,
+ const void *propval, int proplen)
+{
+ int offset;
+ const void *val;
+ int len;
+
+ FDT_CHECK_HEADER(fdt);
+
+ /* FIXME: The algorithm here is pretty horrible: we scan each
+ * property of a node in fdt_getprop(), then if that didn't
+ * find what we want, we scan over them again making our way
+ * to the next node. Still it's the easiest to implement
+ * approach; performance can come later. */
+ for (offset = fdt_next_node(fdt, startoffset, NULL);
+ offset >= 0;
+ offset = fdt_next_node(fdt, offset, NULL)) {
+ val = fdt_getprop(fdt, offset, propname, &len);
+ if (val && (len == proplen)
+ && (memcmp(val, propval, len) == 0))
+ return offset;
+ }
+
+ return offset; /* error from fdt_next_node() */
+}
+
+int fdt_node_offset_by_phandle(const void *fdt, uint32_t phandle)
+{
+ int offset;
+
+ if ((phandle == 0) || (phandle == -1))
+ return -FDT_ERR_BADPHANDLE;
+
+ FDT_CHECK_HEADER(fdt);
+
+ /* FIXME: The algorithm here is pretty horrible: we
+ * potentially scan each property of a node in
+ * fdt_get_phandle(), then if that didn't find what
+ * we want, we scan over them again making our way to the next
+ * node. Still it's the easiest to implement approach;
+ * performance can come later. */
+ for (offset = fdt_next_node(fdt, -1, NULL);
+ offset >= 0;
+ offset = fdt_next_node(fdt, offset, NULL)) {
+ if (fdt_get_phandle(fdt, offset) == phandle)
+ return offset;
+ }
+
+ return offset; /* error from fdt_next_node() */
+}
+
+int fdt_stringlist_contains(const char *strlist, int listlen, const char *str)
+{
+ int len = strlen(str);
+ const char *p;
+
+ while (listlen >= len) {
+ if (memcmp(str, strlist, len+1) == 0)
+ return 1;
+ p = memchr(strlist, '\0', listlen);
+ if (!p)
+ return 0; /* malformed strlist.. */
+ listlen -= (p-strlist) + 1;
+ strlist = p + 1;
+ }
+ return 0;
+}
+
+int fdt_stringlist_count(const void *fdt, int nodeoffset, const char *property)
+{
+ const char *list, *end;
+ int length, count = 0;
+
+ list = fdt_getprop(fdt, nodeoffset, property, &length);
+ if (!list)
+ return length;
+
+ end = list + length;
+
+ while (list < end) {
+ length = strnlen(list, end - list) + 1;
+
+ /* Abort if the last string isn't properly NUL-terminated. */
+ if (list + length > end)
+ return -FDT_ERR_BADVALUE;
+
+ list += length;
+ count++;
+ }
+
+ return count;
+}
+
+int fdt_stringlist_search(const void *fdt, int nodeoffset, const char *property,
+ const char *string)
+{
+ int length, len, idx = 0;
+ const char *list, *end;
+
+ list = fdt_getprop(fdt, nodeoffset, property, &length);
+ if (!list)
+ return length;
+
+ len = strlen(string) + 1;
+ end = list + length;
+
+ while (list < end) {
+ length = strnlen(list, end - list) + 1;
+
+ /* Abort if the last string isn't properly NUL-terminated. */
+ if (list + length > end)
+ return -FDT_ERR_BADVALUE;
+
+ if (length == len && memcmp(list, string, length) == 0)
+ return idx;
+
+ list += length;
+ idx++;
+ }
+
+ return -FDT_ERR_NOTFOUND;
+}
+
+const char *fdt_stringlist_get(const void *fdt, int nodeoffset,
+ const char *property, int idx,
+ int *lenp)
+{
+ const char *list, *end;
+ int length;
+
+ list = fdt_getprop(fdt, nodeoffset, property, &length);
+ if (!list) {
+ if (lenp)
+ *lenp = length;
+
+ return NULL;
+ }
+
+ end = list + length;
+
+ while (list < end) {
+ length = strnlen(list, end - list) + 1;
+
+ /* Abort if the last string isn't properly NUL-terminated. */
+ if (list + length > end) {
+ if (lenp)
+ *lenp = -FDT_ERR_BADVALUE;
+
+ return NULL;
+ }
+
+ if (idx == 0) {
+ if (lenp)
+ *lenp = length - 1;
+
+ return list;
+ }
+
+ list += length;
+ idx--;
+ }
+
+ if (lenp)
+ *lenp = -FDT_ERR_NOTFOUND;
+
+ return NULL;
+}
+
+int fdt_node_check_compatible(const void *fdt, int nodeoffset,
+ const char *compatible)
+{
+ const void *prop;
+ int len;
+
+ prop = fdt_getprop(fdt, nodeoffset, "compatible", &len);
+ if (!prop)
+ return len;
+
+ return !fdt_stringlist_contains(prop, len, compatible);
+}
+
+int fdt_node_offset_by_compatible(const void *fdt, int startoffset,
+ const char *compatible)
+{
+ int offset, err;
+
+ FDT_CHECK_HEADER(fdt);
+
+ /* FIXME: The algorithm here is pretty horrible: we scan each
+ * property of a node in fdt_node_check_compatible(), then if
+ * that didn't find what we want, we scan over them again
+ * making our way to the next node. Still it's the easiest to
+ * implement approach; performance can come later. */
+ for (offset = fdt_next_node(fdt, startoffset, NULL);
+ offset >= 0;
+ offset = fdt_next_node(fdt, offset, NULL)) {
+ err = fdt_node_check_compatible(fdt, offset, compatible);
+ if ((err < 0) && (err != -FDT_ERR_NOTFOUND))
+ return err;
+ else if (err == 0)
+ return offset;
+ }
+
+ return offset; /* error from fdt_next_node() */
+}
diff --git a/scripts/dtc/libfdt/fdt_rw.c b/scripts/dtc/libfdt/fdt_rw.c
new file mode 100644
index 0000000..9b82905
--- /dev/null
+++ b/scripts/dtc/libfdt/fdt_rw.c
@@ -0,0 +1,505 @@
+/*
+ * libfdt - Flat Device Tree manipulation
+ * Copyright (C) 2006 David Gibson, IBM Corporation.
+ *
+ * libfdt is dual licensed: you can use it either under the terms of
+ * the GPL, or the BSD license, at your option.
+ *
+ * a) This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ *
+ * Alternatively,
+ *
+ * b) Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ * 2. Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include "libfdt_env.h"
+
+#include <fdt.h>
+#include <libfdt.h>
+
+#include "libfdt_internal.h"
+
+static int fdt_blocks_misordered_(const void *fdt,
+ int mem_rsv_size, int struct_size)
+{
+ return (fdt_off_mem_rsvmap(fdt) < FDT_ALIGN(sizeof(struct fdt_header), 8))
+ || (fdt_off_dt_struct(fdt) <
+ (fdt_off_mem_rsvmap(fdt) + mem_rsv_size))
+ || (fdt_off_dt_strings(fdt) <
+ (fdt_off_dt_struct(fdt) + struct_size))
+ || (fdt_totalsize(fdt) <
+ (fdt_off_dt_strings(fdt) + fdt_size_dt_strings(fdt)));
+}
+
+static int fdt_rw_check_header_(void *fdt)
+{
+ FDT_CHECK_HEADER(fdt);
+
+ if (fdt_version(fdt) < 17)
+ return -FDT_ERR_BADVERSION;
+ if (fdt_blocks_misordered_(fdt, sizeof(struct fdt_reserve_entry),
+ fdt_size_dt_struct(fdt)))
+ return -FDT_ERR_BADLAYOUT;
+ if (fdt_version(fdt) > 17)
+ fdt_set_version(fdt, 17);
+
+ return 0;
+}
+
+#define FDT_RW_CHECK_HEADER(fdt) \
+ { \
+ int err_; \
+ if ((err_ = fdt_rw_check_header_(fdt)) != 0) \
+ return err_; \
+ }
+
+static inline int fdt_data_size_(void *fdt)
+{
+ return fdt_off_dt_strings(fdt) + fdt_size_dt_strings(fdt);
+}
+
+static int fdt_splice_(void *fdt, void *splicepoint, int oldlen, int newlen)
+{
+ char *p = splicepoint;
+ char *end = (char *)fdt + fdt_data_size_(fdt);
+
+ if (((p + oldlen) < p) || ((p + oldlen) > end))
+ return -FDT_ERR_BADOFFSET;
+ if ((p < (char *)fdt) || ((end - oldlen + newlen) < (char *)fdt))
+ return -FDT_ERR_BADOFFSET;
+ if ((end - oldlen + newlen) > ((char *)fdt + fdt_totalsize(fdt)))
+ return -FDT_ERR_NOSPACE;
+ memmove(p + newlen, p + oldlen, end - p - oldlen);
+ return 0;
+}
+
+static int fdt_splice_mem_rsv_(void *fdt, struct fdt_reserve_entry *p,
+ int oldn, int newn)
+{
+ int delta = (newn - oldn) * sizeof(*p);
+ int err;
+ err = fdt_splice_(fdt, p, oldn * sizeof(*p), newn * sizeof(*p));
+ if (err)
+ return err;
+ fdt_set_off_dt_struct(fdt, fdt_off_dt_struct(fdt) + delta);
+ fdt_set_off_dt_strings(fdt, fdt_off_dt_strings(fdt) + delta);
+ return 0;
+}
+
+static int fdt_splice_struct_(void *fdt, void *p,
+ int oldlen, int newlen)
+{
+ int delta = newlen - oldlen;
+ int err;
+
+ if ((err = fdt_splice_(fdt, p, oldlen, newlen)))
+ return err;
+
+ fdt_set_size_dt_struct(fdt, fdt_size_dt_struct(fdt) + delta);
+ fdt_set_off_dt_strings(fdt, fdt_off_dt_strings(fdt) + delta);
+ return 0;
+}
+
+static int fdt_splice_string_(void *fdt, int newlen)
+{
+ void *p = (char *)fdt
+ + fdt_off_dt_strings(fdt) + fdt_size_dt_strings(fdt);
+ int err;
+
+ if ((err = fdt_splice_(fdt, p, 0, newlen)))
+ return err;
+
+ fdt_set_size_dt_strings(fdt, fdt_size_dt_strings(fdt) + newlen);
+ return 0;
+}
+
+static int fdt_find_add_string_(void *fdt, const char *s)
+{
+ char *strtab = (char *)fdt + fdt_off_dt_strings(fdt);
+ const char *p;
+ char *new;
+ int len = strlen(s) + 1;
+ int err;
+
+ p = fdt_find_string_(strtab, fdt_size_dt_strings(fdt), s);
+ if (p)
+ /* found it */
+ return (p - strtab);
+
+ new = strtab + fdt_size_dt_strings(fdt);
+ err = fdt_splice_string_(fdt, len);
+ if (err)
+ return err;
+
+ memcpy(new, s, len);
+ return (new - strtab);
+}
+
+int fdt_add_mem_rsv(void *fdt, uint64_t address, uint64_t size)
+{
+ struct fdt_reserve_entry *re;
+ int err;
+
+ FDT_RW_CHECK_HEADER(fdt);
+
+ re = fdt_mem_rsv_w_(fdt, fdt_num_mem_rsv(fdt));
+ err = fdt_splice_mem_rsv_(fdt, re, 0, 1);
+ if (err)
+ return err;
+
+ re->address = cpu_to_fdt64(address);
+ re->size = cpu_to_fdt64(size);
+ return 0;
+}
+
+int fdt_del_mem_rsv(void *fdt, int n)
+{
+ struct fdt_reserve_entry *re = fdt_mem_rsv_w_(fdt, n);
+
+ FDT_RW_CHECK_HEADER(fdt);
+
+ if (n >= fdt_num_mem_rsv(fdt))
+ return -FDT_ERR_NOTFOUND;
+
+ return fdt_splice_mem_rsv_(fdt, re, 1, 0);
+}
+
+static int fdt_resize_property_(void *fdt, int nodeoffset, const char *name,
+ int len, struct fdt_property **prop)
+{
+ int oldlen;
+ int err;
+
+ *prop = fdt_get_property_w(fdt, nodeoffset, name, &oldlen);
+ if (!*prop)
+ return oldlen;
+
+ if ((err = fdt_splice_struct_(fdt, (*prop)->data, FDT_TAGALIGN(oldlen),
+ FDT_TAGALIGN(len))))
+ return err;
+
+ (*prop)->len = cpu_to_fdt32(len);
+ return 0;
+}
+
+static int fdt_add_property_(void *fdt, int nodeoffset, const char *name,
+ int len, struct fdt_property **prop)
+{
+ int proplen;
+ int nextoffset;
+ int namestroff;
+ int err;
+
+ if ((nextoffset = fdt_check_node_offset_(fdt, nodeoffset)) < 0)
+ return nextoffset;
+
+ namestroff = fdt_find_add_string_(fdt, name);
+ if (namestroff < 0)
+ return namestroff;
+
+ *prop = fdt_offset_ptr_w_(fdt, nextoffset);
+ proplen = sizeof(**prop) + FDT_TAGALIGN(len);
+
+ err = fdt_splice_struct_(fdt, *prop, 0, proplen);
+ if (err)
+ return err;
+
+ (*prop)->tag = cpu_to_fdt32(FDT_PROP);
+ (*prop)->nameoff = cpu_to_fdt32(namestroff);
+ (*prop)->len = cpu_to_fdt32(len);
+ return 0;
+}
+
+int fdt_set_name(void *fdt, int nodeoffset, const char *name)
+{
+ char *namep;
+ int oldlen, newlen;
+ int err;
+
+ FDT_RW_CHECK_HEADER(fdt);
+
+ namep = (char *)(uintptr_t)fdt_get_name(fdt, nodeoffset, &oldlen);
+ if (!namep)
+ return oldlen;
+
+ newlen = strlen(name);
+
+ err = fdt_splice_struct_(fdt, namep, FDT_TAGALIGN(oldlen+1),
+ FDT_TAGALIGN(newlen+1));
+ if (err)
+ return err;
+
+ memcpy(namep, name, newlen+1);
+ return 0;
+}
+
+int fdt_setprop_placeholder(void *fdt, int nodeoffset, const char *name,
+ int len, void **prop_data)
+{
+ struct fdt_property *prop;
+ int err;
+
+ FDT_RW_CHECK_HEADER(fdt);
+
+ err = fdt_resize_property_(fdt, nodeoffset, name, len, &prop);
+ if (err == -FDT_ERR_NOTFOUND)
+ err = fdt_add_property_(fdt, nodeoffset, name, len, &prop);
+ if (err)
+ return err;
+
+ *prop_data = prop->data;
+ return 0;
+}
+
+int fdt_setprop(void *fdt, int nodeoffset, const char *name,
+ const void *val, int len)
+{
+ void *prop_data;
+ int err;
+
+ err = fdt_setprop_placeholder(fdt, nodeoffset, name, len, &prop_data);
+ if (err)
+ return err;
+
+ if (len)
+ memcpy(prop_data, val, len);
+ return 0;
+}
+
+int fdt_appendprop(void *fdt, int nodeoffset, const char *name,
+ const void *val, int len)
+{
+ struct fdt_property *prop;
+ int err, oldlen, newlen;
+
+ FDT_RW_CHECK_HEADER(fdt);
+
+ prop = fdt_get_property_w(fdt, nodeoffset, name, &oldlen);
+ if (prop) {
+ newlen = len + oldlen;
+ err = fdt_splice_struct_(fdt, prop->data,
+ FDT_TAGALIGN(oldlen),
+ FDT_TAGALIGN(newlen));
+ if (err)
+ return err;
+ prop->len = cpu_to_fdt32(newlen);
+ memcpy(prop->data + oldlen, val, len);
+ } else {
+ err = fdt_add_property_(fdt, nodeoffset, name, len, &prop);
+ if (err)
+ return err;
+ memcpy(prop->data, val, len);
+ }
+ return 0;
+}
+
+int fdt_delprop(void *fdt, int nodeoffset, const char *name)
+{
+ struct fdt_property *prop;
+ int len, proplen;
+
+ FDT_RW_CHECK_HEADER(fdt);
+
+ prop = fdt_get_property_w(fdt, nodeoffset, name, &len);
+ if (!prop)
+ return len;
+
+ proplen = sizeof(*prop) + FDT_TAGALIGN(len);
+ return fdt_splice_struct_(fdt, prop, proplen, 0);
+}
+
+int fdt_add_subnode_namelen(void *fdt, int parentoffset,
+ const char *name, int namelen)
+{
+ struct fdt_node_header *nh;
+ int offset, nextoffset;
+ int nodelen;
+ int err;
+ uint32_t tag;
+ fdt32_t *endtag;
+
+ FDT_RW_CHECK_HEADER(fdt);
+
+ offset = fdt_subnode_offset_namelen(fdt, parentoffset, name, namelen);
+ if (offset >= 0)
+ return -FDT_ERR_EXISTS;
+ else if (offset != -FDT_ERR_NOTFOUND)
+ return offset;
+
+ /* Try to place the new node after the parent's properties */
+ fdt_next_tag(fdt, parentoffset, &nextoffset); /* skip the BEGIN_NODE */
+ do {
+ offset = nextoffset;
+ tag = fdt_next_tag(fdt, offset, &nextoffset);
+ } while ((tag == FDT_PROP) || (tag == FDT_NOP));
+
+ nh = fdt_offset_ptr_w_(fdt, offset);
+ nodelen = sizeof(*nh) + FDT_TAGALIGN(namelen+1) + FDT_TAGSIZE;
+
+ err = fdt_splice_struct_(fdt, nh, 0, nodelen);
+ if (err)
+ return err;
+
+ nh->tag = cpu_to_fdt32(FDT_BEGIN_NODE);
+ memset(nh->name, 0, FDT_TAGALIGN(namelen+1));
+ memcpy(nh->name, name, namelen);
+ endtag = (fdt32_t *)((char *)nh + nodelen - FDT_TAGSIZE);
+ *endtag = cpu_to_fdt32(FDT_END_NODE);
+
+ return offset;
+}
+
+int fdt_add_subnode(void *fdt, int parentoffset, const char *name)
+{
+ return fdt_add_subnode_namelen(fdt, parentoffset, name, strlen(name));
+}
+
+int fdt_del_node(void *fdt, int nodeoffset)
+{
+ int endoffset;
+
+ FDT_RW_CHECK_HEADER(fdt);
+
+ endoffset = fdt_node_end_offset_(fdt, nodeoffset);
+ if (endoffset < 0)
+ return endoffset;
+
+ return fdt_splice_struct_(fdt, fdt_offset_ptr_w_(fdt, nodeoffset),
+ endoffset - nodeoffset, 0);
+}
+
+static void fdt_packblocks_(const char *old, char *new,
+ int mem_rsv_size, int struct_size)
+{
+ int mem_rsv_off, struct_off, strings_off;
+
+ mem_rsv_off = FDT_ALIGN(sizeof(struct fdt_header), 8);
+ struct_off = mem_rsv_off + mem_rsv_size;
+ strings_off = struct_off + struct_size;
+
+ memmove(new + mem_rsv_off, old + fdt_off_mem_rsvmap(old), mem_rsv_size);
+ fdt_set_off_mem_rsvmap(new, mem_rsv_off);
+
+ memmove(new + struct_off, old + fdt_off_dt_struct(old), struct_size);
+ fdt_set_off_dt_struct(new, struct_off);
+ fdt_set_size_dt_struct(new, struct_size);
+
+ memmove(new + strings_off, old + fdt_off_dt_strings(old),
+ fdt_size_dt_strings(old));
+ fdt_set_off_dt_strings(new, strings_off);
+ fdt_set_size_dt_strings(new, fdt_size_dt_strings(old));
+}
+
+int fdt_open_into(const void *fdt, void *buf, int bufsize)
+{
+ int err;
+ int mem_rsv_size, struct_size;
+ int newsize;
+ const char *fdtstart = fdt;
+ const char *fdtend = fdtstart + fdt_totalsize(fdt);
+ char *tmp;
+
+ FDT_CHECK_HEADER(fdt);
+
+ mem_rsv_size = (fdt_num_mem_rsv(fdt)+1)
+ * sizeof(struct fdt_reserve_entry);
+
+ if (fdt_version(fdt) >= 17) {
+ struct_size = fdt_size_dt_struct(fdt);
+ } else {
+ struct_size = 0;
+ while (fdt_next_tag(fdt, struct_size, &struct_size) != FDT_END)
+ ;
+ if (struct_size < 0)
+ return struct_size;
+ }
+
+ if (!fdt_blocks_misordered_(fdt, mem_rsv_size, struct_size)) {
+ /* no further work necessary */
+ err = fdt_move(fdt, buf, bufsize);
+ if (err)
+ return err;
+ fdt_set_version(buf, 17);
+ fdt_set_size_dt_struct(buf, struct_size);
+ fdt_set_totalsize(buf, bufsize);
+ return 0;
+ }
+
+ /* Need to reorder */
+ newsize = FDT_ALIGN(sizeof(struct fdt_header), 8) + mem_rsv_size
+ + struct_size + fdt_size_dt_strings(fdt);
+
+ if (bufsize < newsize)
+ return -FDT_ERR_NOSPACE;
+
+ /* First attempt to build converted tree at beginning of buffer */
+ tmp = buf;
+ /* But if that overlaps with the old tree... */
+ if (((tmp + newsize) > fdtstart) && (tmp < fdtend)) {
+ /* Try right after the old tree instead */
+ tmp = (char *)(uintptr_t)fdtend;
+ if ((tmp + newsize) > ((char *)buf + bufsize))
+ return -FDT_ERR_NOSPACE;
+ }
+
+ fdt_packblocks_(fdt, tmp, mem_rsv_size, struct_size);
+ memmove(buf, tmp, newsize);
+
+ fdt_set_magic(buf, FDT_MAGIC);
+ fdt_set_totalsize(buf, bufsize);
+ fdt_set_version(buf, 17);
+ fdt_set_last_comp_version(buf, 16);
+ fdt_set_boot_cpuid_phys(buf, fdt_boot_cpuid_phys(fdt));
+
+ return 0;
+}
+
+int fdt_pack(void *fdt)
+{
+ int mem_rsv_size;
+
+ FDT_RW_CHECK_HEADER(fdt);
+
+ mem_rsv_size = (fdt_num_mem_rsv(fdt)+1)
+ * sizeof(struct fdt_reserve_entry);
+ fdt_packblocks_(fdt, fdt, mem_rsv_size, fdt_size_dt_struct(fdt));
+ fdt_set_totalsize(fdt, fdt_data_size_(fdt));
+
+ return 0;
+}
diff --git a/scripts/dtc/libfdt/fdt_strerror.c b/scripts/dtc/libfdt/fdt_strerror.c
new file mode 100644
index 0000000..9677a18
--- /dev/null
+++ b/scripts/dtc/libfdt/fdt_strerror.c
@@ -0,0 +1,102 @@
+/*
+ * libfdt - Flat Device Tree manipulation
+ * Copyright (C) 2006 David Gibson, IBM Corporation.
+ *
+ * libfdt is dual licensed: you can use it either under the terms of
+ * the GPL, or the BSD license, at your option.
+ *
+ * a) This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ *
+ * Alternatively,
+ *
+ * b) Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ * 2. Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include "libfdt_env.h"
+
+#include <fdt.h>
+#include <libfdt.h>
+
+#include "libfdt_internal.h"
+
+struct fdt_errtabent {
+ const char *str;
+};
+
+#define FDT_ERRTABENT(val) \
+ [(val)] = { .str = #val, }
+
+static struct fdt_errtabent fdt_errtable[] = {
+ FDT_ERRTABENT(FDT_ERR_NOTFOUND),
+ FDT_ERRTABENT(FDT_ERR_EXISTS),
+ FDT_ERRTABENT(FDT_ERR_NOSPACE),
+
+ FDT_ERRTABENT(FDT_ERR_BADOFFSET),
+ FDT_ERRTABENT(FDT_ERR_BADPATH),
+ FDT_ERRTABENT(FDT_ERR_BADPHANDLE),
+ FDT_ERRTABENT(FDT_ERR_BADSTATE),
+
+ FDT_ERRTABENT(FDT_ERR_TRUNCATED),
+ FDT_ERRTABENT(FDT_ERR_BADMAGIC),
+ FDT_ERRTABENT(FDT_ERR_BADVERSION),
+ FDT_ERRTABENT(FDT_ERR_BADSTRUCTURE),
+ FDT_ERRTABENT(FDT_ERR_BADLAYOUT),
+ FDT_ERRTABENT(FDT_ERR_INTERNAL),
+ FDT_ERRTABENT(FDT_ERR_BADNCELLS),
+ FDT_ERRTABENT(FDT_ERR_BADVALUE),
+ FDT_ERRTABENT(FDT_ERR_BADOVERLAY),
+ FDT_ERRTABENT(FDT_ERR_NOPHANDLES),
+};
+#define FDT_ERRTABSIZE (sizeof(fdt_errtable) / sizeof(fdt_errtable[0]))
+
+const char *fdt_strerror(int errval)
+{
+ if (errval > 0)
+ return "<valid offset/length>";
+ else if (errval == 0)
+ return "<no error>";
+ else if (errval > -FDT_ERRTABSIZE) {
+ const char *s = fdt_errtable[-errval].str;
+
+ if (s)
+ return s;
+ }
+
+ return "<unknown error>";
+}
diff --git a/scripts/dtc/libfdt/fdt_sw.c b/scripts/dtc/libfdt/fdt_sw.c
new file mode 100644
index 0000000..6d33cc2
--- /dev/null
+++ b/scripts/dtc/libfdt/fdt_sw.c
@@ -0,0 +1,300 @@
+/*
+ * libfdt - Flat Device Tree manipulation
+ * Copyright (C) 2006 David Gibson, IBM Corporation.
+ *
+ * libfdt is dual licensed: you can use it either under the terms of
+ * the GPL, or the BSD license, at your option.
+ *
+ * a) This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ *
+ * Alternatively,
+ *
+ * b) Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ * 2. Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include "libfdt_env.h"
+
+#include <fdt.h>
+#include <libfdt.h>
+
+#include "libfdt_internal.h"
+
+static int fdt_sw_check_header_(void *fdt)
+{
+ if (fdt_magic(fdt) != FDT_SW_MAGIC)
+ return -FDT_ERR_BADMAGIC;
+ /* FIXME: should check more details about the header state */
+ return 0;
+}
+
+#define FDT_SW_CHECK_HEADER(fdt) \
+ { \
+ int err; \
+ if ((err = fdt_sw_check_header_(fdt)) != 0) \
+ return err; \
+ }
+
+static void *fdt_grab_space_(void *fdt, size_t len)
+{
+ int offset = fdt_size_dt_struct(fdt);
+ int spaceleft;
+
+ spaceleft = fdt_totalsize(fdt) - fdt_off_dt_struct(fdt)
+ - fdt_size_dt_strings(fdt);
+
+ if ((offset + len < offset) || (offset + len > spaceleft))
+ return NULL;
+
+ fdt_set_size_dt_struct(fdt, offset + len);
+ return fdt_offset_ptr_w_(fdt, offset);
+}
+
+int fdt_create(void *buf, int bufsize)
+{
+ void *fdt = buf;
+
+ if (bufsize < sizeof(struct fdt_header))
+ return -FDT_ERR_NOSPACE;
+
+ memset(buf, 0, bufsize);
+
+ fdt_set_magic(fdt, FDT_SW_MAGIC);
+ fdt_set_version(fdt, FDT_LAST_SUPPORTED_VERSION);
+ fdt_set_last_comp_version(fdt, FDT_FIRST_SUPPORTED_VERSION);
+ fdt_set_totalsize(fdt, bufsize);
+
+ fdt_set_off_mem_rsvmap(fdt, FDT_ALIGN(sizeof(struct fdt_header),
+ sizeof(struct fdt_reserve_entry)));
+ fdt_set_off_dt_struct(fdt, fdt_off_mem_rsvmap(fdt));
+ fdt_set_off_dt_strings(fdt, bufsize);
+
+ return 0;
+}
+
+int fdt_resize(void *fdt, void *buf, int bufsize)
+{
+ size_t headsize, tailsize;
+ char *oldtail, *newtail;
+
+ FDT_SW_CHECK_HEADER(fdt);
+
+ headsize = fdt_off_dt_struct(fdt);
+ tailsize = fdt_size_dt_strings(fdt);
+
+ if ((headsize + tailsize) > bufsize)
+ return -FDT_ERR_NOSPACE;
+
+ oldtail = (char *)fdt + fdt_totalsize(fdt) - tailsize;
+ newtail = (char *)buf + bufsize - tailsize;
+
+ /* Two cases to avoid clobbering data if the old and new
+ * buffers partially overlap */
+ if (buf <= fdt) {
+ memmove(buf, fdt, headsize);
+ memmove(newtail, oldtail, tailsize);
+ } else {
+ memmove(newtail, oldtail, tailsize);
+ memmove(buf, fdt, headsize);
+ }
+
+ fdt_set_off_dt_strings(buf, bufsize);
+ fdt_set_totalsize(buf, bufsize);
+
+ return 0;
+}
+
+int fdt_add_reservemap_entry(void *fdt, uint64_t addr, uint64_t size)
+{
+ struct fdt_reserve_entry *re;
+ int offset;
+
+ FDT_SW_CHECK_HEADER(fdt);
+
+ if (fdt_size_dt_struct(fdt))
+ return -FDT_ERR_BADSTATE;
+
+ offset = fdt_off_dt_struct(fdt);
+ if ((offset + sizeof(*re)) > fdt_totalsize(fdt))
+ return -FDT_ERR_NOSPACE;
+
+ re = (struct fdt_reserve_entry *)((char *)fdt + offset);
+ re->address = cpu_to_fdt64(addr);
+ re->size = cpu_to_fdt64(size);
+
+ fdt_set_off_dt_struct(fdt, offset + sizeof(*re));
+
+ return 0;
+}
+
+int fdt_finish_reservemap(void *fdt)
+{
+ return fdt_add_reservemap_entry(fdt, 0, 0);
+}
+
+int fdt_begin_node(void *fdt, const char *name)
+{
+ struct fdt_node_header *nh;
+ int namelen = strlen(name) + 1;
+
+ FDT_SW_CHECK_HEADER(fdt);
+
+ nh = fdt_grab_space_(fdt, sizeof(*nh) + FDT_TAGALIGN(namelen));
+ if (! nh)
+ return -FDT_ERR_NOSPACE;
+
+ nh->tag = cpu_to_fdt32(FDT_BEGIN_NODE);
+ memcpy(nh->name, name, namelen);
+ return 0;
+}
+
+int fdt_end_node(void *fdt)
+{
+ fdt32_t *en;
+
+ FDT_SW_CHECK_HEADER(fdt);
+
+ en = fdt_grab_space_(fdt, FDT_TAGSIZE);
+ if (! en)
+ return -FDT_ERR_NOSPACE;
+
+ *en = cpu_to_fdt32(FDT_END_NODE);
+ return 0;
+}
+
+static int fdt_find_add_string_(void *fdt, const char *s)
+{
+ char *strtab = (char *)fdt + fdt_totalsize(fdt);
+ const char *p;
+ int strtabsize = fdt_size_dt_strings(fdt);
+ int len = strlen(s) + 1;
+ int struct_top, offset;
+
+ p = fdt_find_string_(strtab - strtabsize, strtabsize, s);
+ if (p)
+ return p - strtab;
+
+ /* Add it */
+ offset = -strtabsize - len;
+ struct_top = fdt_off_dt_struct(fdt) + fdt_size_dt_struct(fdt);
+ if (fdt_totalsize(fdt) + offset < struct_top)
+ return 0; /* no more room :( */
+
+ memcpy(strtab + offset, s, len);
+ fdt_set_size_dt_strings(fdt, strtabsize + len);
+ return offset;
+}
+
+int fdt_property_placeholder(void *fdt, const char *name, int len, void **valp)
+{
+ struct fdt_property *prop;
+ int nameoff;
+
+ FDT_SW_CHECK_HEADER(fdt);
+
+ nameoff = fdt_find_add_string_(fdt, name);
+ if (nameoff == 0)
+ return -FDT_ERR_NOSPACE;
+
+ prop = fdt_grab_space_(fdt, sizeof(*prop) + FDT_TAGALIGN(len));
+ if (! prop)
+ return -FDT_ERR_NOSPACE;
+
+ prop->tag = cpu_to_fdt32(FDT_PROP);
+ prop->nameoff = cpu_to_fdt32(nameoff);
+ prop->len = cpu_to_fdt32(len);
+ *valp = prop->data;
+ return 0;
+}
+
+int fdt_property(void *fdt, const char *name, const void *val, int len)
+{
+ void *ptr;
+ int ret;
+
+ ret = fdt_property_placeholder(fdt, name, len, &ptr);
+ if (ret)
+ return ret;
+ memcpy(ptr, val, len);
+ return 0;
+}
+
+int fdt_finish(void *fdt)
+{
+ char *p = (char *)fdt;
+ fdt32_t *end;
+ int oldstroffset, newstroffset;
+ uint32_t tag;
+ int offset, nextoffset;
+
+ FDT_SW_CHECK_HEADER(fdt);
+
+ /* Add terminator */
+ end = fdt_grab_space_(fdt, sizeof(*end));
+ if (! end)
+ return -FDT_ERR_NOSPACE;
+ *end = cpu_to_fdt32(FDT_END);
+
+ /* Relocate the string table */
+ oldstroffset = fdt_totalsize(fdt) - fdt_size_dt_strings(fdt);
+ newstroffset = fdt_off_dt_struct(fdt) + fdt_size_dt_struct(fdt);
+ memmove(p + newstroffset, p + oldstroffset, fdt_size_dt_strings(fdt));
+ fdt_set_off_dt_strings(fdt, newstroffset);
+
+ /* Walk the structure, correcting string offsets */
+ offset = 0;
+ while ((tag = fdt_next_tag(fdt, offset, &nextoffset)) != FDT_END) {
+ if (tag == FDT_PROP) {
+ struct fdt_property *prop =
+ fdt_offset_ptr_w_(fdt, offset);
+ int nameoff;
+
+ nameoff = fdt32_to_cpu(prop->nameoff);
+ nameoff += fdt_size_dt_strings(fdt);
+ prop->nameoff = cpu_to_fdt32(nameoff);
+ }
+ offset = nextoffset;
+ }
+ if (nextoffset < 0)
+ return nextoffset;
+
+ /* Finally, adjust the header */
+ fdt_set_totalsize(fdt, newstroffset + fdt_size_dt_strings(fdt));
+ fdt_set_magic(fdt, FDT_MAGIC);
+ return 0;
+}
diff --git a/scripts/dtc/libfdt/fdt_wip.c b/scripts/dtc/libfdt/fdt_wip.c
new file mode 100644
index 0000000..534c1cb
--- /dev/null
+++ b/scripts/dtc/libfdt/fdt_wip.c
@@ -0,0 +1,139 @@
+/*
+ * libfdt - Flat Device Tree manipulation
+ * Copyright (C) 2006 David Gibson, IBM Corporation.
+ *
+ * libfdt is dual licensed: you can use it either under the terms of
+ * the GPL, or the BSD license, at your option.
+ *
+ * a) This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ *
+ * Alternatively,
+ *
+ * b) Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ * 2. Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include "libfdt_env.h"
+
+#include <fdt.h>
+#include <libfdt.h>
+
+#include "libfdt_internal.h"
+
+int fdt_setprop_inplace_namelen_partial(void *fdt, int nodeoffset,
+ const char *name, int namelen,
+ uint32_t idx, const void *val,
+ int len)
+{
+ void *propval;
+ int proplen;
+
+ propval = fdt_getprop_namelen_w(fdt, nodeoffset, name, namelen,
+ &proplen);
+ if (!propval)
+ return proplen;
+
+ if (proplen < (len + idx))
+ return -FDT_ERR_NOSPACE;
+
+ memcpy((char *)propval + idx, val, len);
+ return 0;
+}
+
+int fdt_setprop_inplace(void *fdt, int nodeoffset, const char *name,
+ const void *val, int len)
+{
+ const void *propval;
+ int proplen;
+
+ propval = fdt_getprop(fdt, nodeoffset, name, &proplen);
+ if (!propval)
+ return proplen;
+
+ if (proplen != len)
+ return -FDT_ERR_NOSPACE;
+
+ return fdt_setprop_inplace_namelen_partial(fdt, nodeoffset, name,
+ strlen(name), 0,
+ val, len);
+}
+
+static void fdt_nop_region_(void *start, int len)
+{
+ fdt32_t *p;
+
+ for (p = start; (char *)p < ((char *)start + len); p++)
+ *p = cpu_to_fdt32(FDT_NOP);
+}
+
+int fdt_nop_property(void *fdt, int nodeoffset, const char *name)
+{
+ struct fdt_property *prop;
+ int len;
+
+ prop = fdt_get_property_w(fdt, nodeoffset, name, &len);
+ if (!prop)
+ return len;
+
+ fdt_nop_region_(prop, len + sizeof(*prop));
+
+ return 0;
+}
+
+int fdt_node_end_offset_(void *fdt, int offset)
+{
+ int depth = 0;
+
+ while ((offset >= 0) && (depth >= 0))
+ offset = fdt_next_node(fdt, offset, &depth);
+
+ return offset;
+}
+
+int fdt_nop_node(void *fdt, int nodeoffset)
+{
+ int endoffset;
+
+ endoffset = fdt_node_end_offset_(fdt, nodeoffset);
+ if (endoffset < 0)
+ return endoffset;
+
+ fdt_nop_region_(fdt_offset_ptr_w(fdt, nodeoffset, 0),
+ endoffset - nodeoffset);
+ return 0;
+}
diff --git a/scripts/dtc/libfdt/libfdt.h b/scripts/dtc/libfdt/libfdt.h
new file mode 100644
index 0000000..1e27780
--- /dev/null
+++ b/scripts/dtc/libfdt/libfdt.h
@@ -0,0 +1,1902 @@
+#ifndef LIBFDT_H
+#define LIBFDT_H
+/*
+ * libfdt - Flat Device Tree manipulation
+ * Copyright (C) 2006 David Gibson, IBM Corporation.
+ *
+ * libfdt is dual licensed: you can use it either under the terms of
+ * the GPL, or the BSD license, at your option.
+ *
+ * a) This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ *
+ * Alternatively,
+ *
+ * b) Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ * 2. Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "libfdt_env.h"
+#include "fdt.h"
+
+#define FDT_FIRST_SUPPORTED_VERSION 0x02
+#define FDT_LAST_SUPPORTED_VERSION 0x11
+
+/* Error codes: informative error codes */
+#define FDT_ERR_NOTFOUND 1
+ /* FDT_ERR_NOTFOUND: The requested node or property does not exist */
+#define FDT_ERR_EXISTS 2
+ /* FDT_ERR_EXISTS: Attempted to create a node or property which
+ * already exists */
+#define FDT_ERR_NOSPACE 3
+ /* FDT_ERR_NOSPACE: Operation needed to expand the device
+ * tree, but its buffer did not have sufficient space to
+ * contain the expanded tree. Use fdt_open_into() to move the
+ * device tree to a buffer with more space. */
+
+/* Error codes: codes for bad parameters */
+#define FDT_ERR_BADOFFSET 4
+ /* FDT_ERR_BADOFFSET: Function was passed a structure block
+ * offset which is out-of-bounds, or which points to an
+ * unsuitable part of the structure for the operation. */
+#define FDT_ERR_BADPATH 5
+ /* FDT_ERR_BADPATH: Function was passed a badly formatted path
+ * (e.g. missing a leading / for a function which requires an
+ * absolute path) */
+#define FDT_ERR_BADPHANDLE 6
+ /* FDT_ERR_BADPHANDLE: Function was passed an invalid phandle.
+ * This can be caused either by an invalid phandle property
+ * length, or the phandle value was either 0 or -1, which are
+ * not permitted. */
+#define FDT_ERR_BADSTATE 7
+ /* FDT_ERR_BADSTATE: Function was passed an incomplete device
+ * tree created by the sequential-write functions, which is
+ * not sufficiently complete for the requested operation. */
+
+/* Error codes: codes for bad device tree blobs */
+#define FDT_ERR_TRUNCATED 8
+ /* FDT_ERR_TRUNCATED: Structure block of the given device tree
+ * ends without an FDT_END tag. */
+#define FDT_ERR_BADMAGIC 9
+ /* FDT_ERR_BADMAGIC: Given "device tree" appears not to be a
+ * device tree at all - it is missing the flattened device
+ * tree magic number. */
+#define FDT_ERR_BADVERSION 10
+ /* FDT_ERR_BADVERSION: Given device tree has a version which
+ * can't be handled by the requested operation. For
+ * read-write functions, this may mean that fdt_open_into() is
+ * required to convert the tree to the expected version. */
+#define FDT_ERR_BADSTRUCTURE 11
+ /* FDT_ERR_BADSTRUCTURE: Given device tree has a corrupt
+ * structure block or other serious error (e.g. misnested
+ * nodes, or subnodes preceding properties). */
+#define FDT_ERR_BADLAYOUT 12
+ /* FDT_ERR_BADLAYOUT: For read-write functions, the given
+ * device tree has it's sub-blocks in an order that the
+ * function can't handle (memory reserve map, then structure,
+ * then strings). Use fdt_open_into() to reorganize the tree
+ * into a form suitable for the read-write operations. */
+
+/* "Can't happen" error indicating a bug in libfdt */
+#define FDT_ERR_INTERNAL 13
+ /* FDT_ERR_INTERNAL: libfdt has failed an internal assertion.
+ * Should never be returned, if it is, it indicates a bug in
+ * libfdt itself. */
+
+/* Errors in device tree content */
+#define FDT_ERR_BADNCELLS 14
+ /* FDT_ERR_BADNCELLS: Device tree has a #address-cells, #size-cells
+ * or similar property with a bad format or value */
+
+#define FDT_ERR_BADVALUE 15
+ /* FDT_ERR_BADVALUE: Device tree has a property with an unexpected
+ * value. For example: a property expected to contain a string list
+ * is not NUL-terminated within the length of its value. */
+
+#define FDT_ERR_BADOVERLAY 16
+ /* FDT_ERR_BADOVERLAY: The device tree overlay, while
+ * correctly structured, cannot be applied due to some
+ * unexpected or missing value, property or node. */
+
+#define FDT_ERR_NOPHANDLES 17
+ /* FDT_ERR_NOPHANDLES: The device tree doesn't have any
+ * phandle available anymore without causing an overflow */
+
+#define FDT_ERR_MAX 17
+
+/**********************************************************************/
+/* Low-level functions (you probably don't need these) */
+/**********************************************************************/
+
+#ifndef SWIG /* This function is not useful in Python */
+const void *fdt_offset_ptr(const void *fdt, int offset, unsigned int checklen);
+#endif
+static inline void *fdt_offset_ptr_w(void *fdt, int offset, int checklen)
+{
+ return (void *)(uintptr_t)fdt_offset_ptr(fdt, offset, checklen);
+}
+
+uint32_t fdt_next_tag(const void *fdt, int offset, int *nextoffset);
+
+/**********************************************************************/
+/* Traversal functions */
+/**********************************************************************/
+
+int fdt_next_node(const void *fdt, int offset, int *depth);
+
+/**
+ * fdt_first_subnode() - get offset of first direct subnode
+ *
+ * @fdt: FDT blob
+ * @offset: Offset of node to check
+ * @return offset of first subnode, or -FDT_ERR_NOTFOUND if there is none
+ */
+int fdt_first_subnode(const void *fdt, int offset);
+
+/**
+ * fdt_next_subnode() - get offset of next direct subnode
+ *
+ * After first calling fdt_first_subnode(), call this function repeatedly to
+ * get direct subnodes of a parent node.
+ *
+ * @fdt: FDT blob
+ * @offset: Offset of previous subnode
+ * @return offset of next subnode, or -FDT_ERR_NOTFOUND if there are no more
+ * subnodes
+ */
+int fdt_next_subnode(const void *fdt, int offset);
+
+/**
+ * fdt_for_each_subnode - iterate over all subnodes of a parent
+ *
+ * @node: child node (int, lvalue)
+ * @fdt: FDT blob (const void *)
+ * @parent: parent node (int)
+ *
+ * This is actually a wrapper around a for loop and would be used like so:
+ *
+ * fdt_for_each_subnode(node, fdt, parent) {
+ * Use node
+ * ...
+ * }
+ *
+ * if ((node < 0) && (node != -FDT_ERR_NOT_FOUND)) {
+ * Error handling
+ * }
+ *
+ * Note that this is implemented as a macro and @node is used as
+ * iterator in the loop. The parent variable be constant or even a
+ * literal.
+ *
+ */
+#define fdt_for_each_subnode(node, fdt, parent) \
+ for (node = fdt_first_subnode(fdt, parent); \
+ node >= 0; \
+ node = fdt_next_subnode(fdt, node))
+
+/**********************************************************************/
+/* General functions */
+/**********************************************************************/
+#define fdt_get_header(fdt, field) \
+ (fdt32_to_cpu(((const struct fdt_header *)(fdt))->field))
+#define fdt_magic(fdt) (fdt_get_header(fdt, magic))
+#define fdt_totalsize(fdt) (fdt_get_header(fdt, totalsize))
+#define fdt_off_dt_struct(fdt) (fdt_get_header(fdt, off_dt_struct))
+#define fdt_off_dt_strings(fdt) (fdt_get_header(fdt, off_dt_strings))
+#define fdt_off_mem_rsvmap(fdt) (fdt_get_header(fdt, off_mem_rsvmap))
+#define fdt_version(fdt) (fdt_get_header(fdt, version))
+#define fdt_last_comp_version(fdt) (fdt_get_header(fdt, last_comp_version))
+#define fdt_boot_cpuid_phys(fdt) (fdt_get_header(fdt, boot_cpuid_phys))
+#define fdt_size_dt_strings(fdt) (fdt_get_header(fdt, size_dt_strings))
+#define fdt_size_dt_struct(fdt) (fdt_get_header(fdt, size_dt_struct))
+
+#define fdt_set_hdr_(name) \
+ static inline void fdt_set_##name(void *fdt, uint32_t val) \
+ { \
+ struct fdt_header *fdth = (struct fdt_header *)fdt; \
+ fdth->name = cpu_to_fdt32(val); \
+ }
+fdt_set_hdr_(magic);
+fdt_set_hdr_(totalsize);
+fdt_set_hdr_(off_dt_struct);
+fdt_set_hdr_(off_dt_strings);
+fdt_set_hdr_(off_mem_rsvmap);
+fdt_set_hdr_(version);
+fdt_set_hdr_(last_comp_version);
+fdt_set_hdr_(boot_cpuid_phys);
+fdt_set_hdr_(size_dt_strings);
+fdt_set_hdr_(size_dt_struct);
+#undef fdt_set_hdr_
+
+/**
+ * fdt_check_header - sanity check a device tree or possible device tree
+ * @fdt: pointer to data which might be a flattened device tree
+ *
+ * fdt_check_header() checks that the given buffer contains what
+ * appears to be a flattened device tree with sane information in its
+ * header.
+ *
+ * returns:
+ * 0, if the buffer appears to contain a valid device tree
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE, standard meanings, as above
+ */
+int fdt_check_header(const void *fdt);
+
+/**
+ * fdt_move - move a device tree around in memory
+ * @fdt: pointer to the device tree to move
+ * @buf: pointer to memory where the device is to be moved
+ * @bufsize: size of the memory space at buf
+ *
+ * fdt_move() relocates, if possible, the device tree blob located at
+ * fdt to the buffer at buf of size bufsize. The buffer may overlap
+ * with the existing device tree blob at fdt. Therefore,
+ * fdt_move(fdt, fdt, fdt_totalsize(fdt))
+ * should always succeed.
+ *
+ * returns:
+ * 0, on success
+ * -FDT_ERR_NOSPACE, bufsize is insufficient to contain the device tree
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE, standard meanings
+ */
+int fdt_move(const void *fdt, void *buf, int bufsize);
+
+/**********************************************************************/
+/* Read-only functions */
+/**********************************************************************/
+
+/**
+ * fdt_string - retrieve a string from the strings block of a device tree
+ * @fdt: pointer to the device tree blob
+ * @stroffset: offset of the string within the strings block (native endian)
+ *
+ * fdt_string() retrieves a pointer to a single string from the
+ * strings block of the device tree blob at fdt.
+ *
+ * returns:
+ * a pointer to the string, on success
+ * NULL, if stroffset is out of bounds
+ */
+const char *fdt_string(const void *fdt, int stroffset);
+
+/**
+ * fdt_get_max_phandle - retrieves the highest phandle in a tree
+ * @fdt: pointer to the device tree blob
+ *
+ * fdt_get_max_phandle retrieves the highest phandle in the given
+ * device tree. This will ignore badly formatted phandles, or phandles
+ * with a value of 0 or -1.
+ *
+ * returns:
+ * the highest phandle on success
+ * 0, if no phandle was found in the device tree
+ * -1, if an error occurred
+ */
+uint32_t fdt_get_max_phandle(const void *fdt);
+
+/**
+ * fdt_num_mem_rsv - retrieve the number of memory reserve map entries
+ * @fdt: pointer to the device tree blob
+ *
+ * Returns the number of entries in the device tree blob's memory
+ * reservation map. This does not include the terminating 0,0 entry
+ * or any other (0,0) entries reserved for expansion.
+ *
+ * returns:
+ * the number of entries
+ */
+int fdt_num_mem_rsv(const void *fdt);
+
+/**
+ * fdt_get_mem_rsv - retrieve one memory reserve map entry
+ * @fdt: pointer to the device tree blob
+ * @address, @size: pointers to 64-bit variables
+ *
+ * On success, *address and *size will contain the address and size of
+ * the n-th reserve map entry from the device tree blob, in
+ * native-endian format.
+ *
+ * returns:
+ * 0, on success
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE, standard meanings
+ */
+int fdt_get_mem_rsv(const void *fdt, int n, uint64_t *address, uint64_t *size);
+
+/**
+ * fdt_subnode_offset_namelen - find a subnode based on substring
+ * @fdt: pointer to the device tree blob
+ * @parentoffset: structure block offset of a node
+ * @name: name of the subnode to locate
+ * @namelen: number of characters of name to consider
+ *
+ * Identical to fdt_subnode_offset(), but only examine the first
+ * namelen characters of name for matching the subnode name. This is
+ * useful for finding subnodes based on a portion of a larger string,
+ * such as a full path.
+ */
+#ifndef SWIG /* Not available in Python */
+int fdt_subnode_offset_namelen(const void *fdt, int parentoffset,
+ const char *name, int namelen);
+#endif
+/**
+ * fdt_subnode_offset - find a subnode of a given node
+ * @fdt: pointer to the device tree blob
+ * @parentoffset: structure block offset of a node
+ * @name: name of the subnode to locate
+ *
+ * fdt_subnode_offset() finds a subnode of the node at structure block
+ * offset parentoffset with the given name. name may include a unit
+ * address, in which case fdt_subnode_offset() will find the subnode
+ * with that unit address, or the unit address may be omitted, in
+ * which case fdt_subnode_offset() will find an arbitrary subnode
+ * whose name excluding unit address matches the given name.
+ *
+ * returns:
+ * structure block offset of the requested subnode (>=0), on success
+ * -FDT_ERR_NOTFOUND, if the requested subnode does not exist
+ * -FDT_ERR_BADOFFSET, if parentoffset did not point to an FDT_BEGIN_NODE
+ * tag
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE,
+ * -FDT_ERR_TRUNCATED, standard meanings.
+ */
+int fdt_subnode_offset(const void *fdt, int parentoffset, const char *name);
+
+/**
+ * fdt_path_offset_namelen - find a tree node by its full path
+ * @fdt: pointer to the device tree blob
+ * @path: full path of the node to locate
+ * @namelen: number of characters of path to consider
+ *
+ * Identical to fdt_path_offset(), but only consider the first namelen
+ * characters of path as the path name.
+ */
+#ifndef SWIG /* Not available in Python */
+int fdt_path_offset_namelen(const void *fdt, const char *path, int namelen);
+#endif
+
+/**
+ * fdt_path_offset - find a tree node by its full path
+ * @fdt: pointer to the device tree blob
+ * @path: full path of the node to locate
+ *
+ * fdt_path_offset() finds a node of a given path in the device tree.
+ * Each path component may omit the unit address portion, but the
+ * results of this are undefined if any such path component is
+ * ambiguous (that is if there are multiple nodes at the relevant
+ * level matching the given component, differentiated only by unit
+ * address).
+ *
+ * returns:
+ * structure block offset of the node with the requested path (>=0), on
+ * success
+ * -FDT_ERR_BADPATH, given path does not begin with '/' or is invalid
+ * -FDT_ERR_NOTFOUND, if the requested node does not exist
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE,
+ * -FDT_ERR_TRUNCATED, standard meanings.
+ */
+int fdt_path_offset(const void *fdt, const char *path);
+
+/**
+ * fdt_get_name - retrieve the name of a given node
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: structure block offset of the starting node
+ * @lenp: pointer to an integer variable (will be overwritten) or NULL
+ *
+ * fdt_get_name() retrieves the name (including unit address) of the
+ * device tree node at structure block offset nodeoffset. If lenp is
+ * non-NULL, the length of this name is also returned, in the integer
+ * pointed to by lenp.
+ *
+ * returns:
+ * pointer to the node's name, on success
+ * If lenp is non-NULL, *lenp contains the length of that name
+ * (>=0)
+ * NULL, on error
+ * if lenp is non-NULL *lenp contains an error code (<0):
+ * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE
+ * tag
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE, standard meanings
+ */
+const char *fdt_get_name(const void *fdt, int nodeoffset, int *lenp);
+
+/**
+ * fdt_first_property_offset - find the offset of a node's first property
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: structure block offset of a node
+ *
+ * fdt_first_property_offset() finds the first property of the node at
+ * the given structure block offset.
+ *
+ * returns:
+ * structure block offset of the property (>=0), on success
+ * -FDT_ERR_NOTFOUND, if the requested node has no properties
+ * -FDT_ERR_BADOFFSET, if nodeoffset did not point to an FDT_BEGIN_NODE tag
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE,
+ * -FDT_ERR_TRUNCATED, standard meanings.
+ */
+int fdt_first_property_offset(const void *fdt, int nodeoffset);
+
+/**
+ * fdt_next_property_offset - step through a node's properties
+ * @fdt: pointer to the device tree blob
+ * @offset: structure block offset of a property
+ *
+ * fdt_next_property_offset() finds the property immediately after the
+ * one at the given structure block offset. This will be a property
+ * of the same node as the given property.
+ *
+ * returns:
+ * structure block offset of the next property (>=0), on success
+ * -FDT_ERR_NOTFOUND, if the given property is the last in its node
+ * -FDT_ERR_BADOFFSET, if nodeoffset did not point to an FDT_PROP tag
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE,
+ * -FDT_ERR_TRUNCATED, standard meanings.
+ */
+int fdt_next_property_offset(const void *fdt, int offset);
+
+/**
+ * fdt_for_each_property_offset - iterate over all properties of a node
+ *
+ * @property_offset: property offset (int, lvalue)
+ * @fdt: FDT blob (const void *)
+ * @node: node offset (int)
+ *
+ * This is actually a wrapper around a for loop and would be used like so:
+ *
+ * fdt_for_each_property_offset(property, fdt, node) {
+ * Use property
+ * ...
+ * }
+ *
+ * if ((property < 0) && (property != -FDT_ERR_NOT_FOUND)) {
+ * Error handling
+ * }
+ *
+ * Note that this is implemented as a macro and property is used as
+ * iterator in the loop. The node variable can be constant or even a
+ * literal.
+ */
+#define fdt_for_each_property_offset(property, fdt, node) \
+ for (property = fdt_first_property_offset(fdt, node); \
+ property >= 0; \
+ property = fdt_next_property_offset(fdt, property))
+
+/**
+ * fdt_get_property_by_offset - retrieve the property at a given offset
+ * @fdt: pointer to the device tree blob
+ * @offset: offset of the property to retrieve
+ * @lenp: pointer to an integer variable (will be overwritten) or NULL
+ *
+ * fdt_get_property_by_offset() retrieves a pointer to the
+ * fdt_property structure within the device tree blob at the given
+ * offset. If lenp is non-NULL, the length of the property value is
+ * also returned, in the integer pointed to by lenp.
+ *
+ * Note that this code only works on device tree versions >= 16. fdt_getprop()
+ * works on all versions.
+ *
+ * returns:
+ * pointer to the structure representing the property
+ * if lenp is non-NULL, *lenp contains the length of the property
+ * value (>=0)
+ * NULL, on error
+ * if lenp is non-NULL, *lenp contains an error code (<0):
+ * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_PROP tag
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE,
+ * -FDT_ERR_TRUNCATED, standard meanings
+ */
+const struct fdt_property *fdt_get_property_by_offset(const void *fdt,
+ int offset,
+ int *lenp);
+
+/**
+ * fdt_get_property_namelen - find a property based on substring
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of the node whose property to find
+ * @name: name of the property to find
+ * @namelen: number of characters of name to consider
+ * @lenp: pointer to an integer variable (will be overwritten) or NULL
+ *
+ * Identical to fdt_get_property(), but only examine the first namelen
+ * characters of name for matching the property name.
+ */
+#ifndef SWIG /* Not available in Python */
+const struct fdt_property *fdt_get_property_namelen(const void *fdt,
+ int nodeoffset,
+ const char *name,
+ int namelen, int *lenp);
+#endif
+
+/**
+ * fdt_get_property - find a given property in a given node
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of the node whose property to find
+ * @name: name of the property to find
+ * @lenp: pointer to an integer variable (will be overwritten) or NULL
+ *
+ * fdt_get_property() retrieves a pointer to the fdt_property
+ * structure within the device tree blob corresponding to the property
+ * named 'name' of the node at offset nodeoffset. If lenp is
+ * non-NULL, the length of the property value is also returned, in the
+ * integer pointed to by lenp.
+ *
+ * returns:
+ * pointer to the structure representing the property
+ * if lenp is non-NULL, *lenp contains the length of the property
+ * value (>=0)
+ * NULL, on error
+ * if lenp is non-NULL, *lenp contains an error code (<0):
+ * -FDT_ERR_NOTFOUND, node does not have named property
+ * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE
+ * tag
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE,
+ * -FDT_ERR_TRUNCATED, standard meanings
+ */
+const struct fdt_property *fdt_get_property(const void *fdt, int nodeoffset,
+ const char *name, int *lenp);
+static inline struct fdt_property *fdt_get_property_w(void *fdt, int nodeoffset,
+ const char *name,
+ int *lenp)
+{
+ return (struct fdt_property *)(uintptr_t)
+ fdt_get_property(fdt, nodeoffset, name, lenp);
+}
+
+/**
+ * fdt_getprop_by_offset - retrieve the value of a property at a given offset
+ * @fdt: pointer to the device tree blob
+ * @ffset: offset of the property to read
+ * @namep: pointer to a string variable (will be overwritten) or NULL
+ * @lenp: pointer to an integer variable (will be overwritten) or NULL
+ *
+ * fdt_getprop_by_offset() retrieves a pointer to the value of the
+ * property at structure block offset 'offset' (this will be a pointer
+ * to within the device blob itself, not a copy of the value). If
+ * lenp is non-NULL, the length of the property value is also
+ * returned, in the integer pointed to by lenp. If namep is non-NULL,
+ * the property's namne will also be returned in the char * pointed to
+ * by namep (this will be a pointer to within the device tree's string
+ * block, not a new copy of the name).
+ *
+ * returns:
+ * pointer to the property's value
+ * if lenp is non-NULL, *lenp contains the length of the property
+ * value (>=0)
+ * if namep is non-NULL *namep contiains a pointer to the property
+ * name.
+ * NULL, on error
+ * if lenp is non-NULL, *lenp contains an error code (<0):
+ * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_PROP tag
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE,
+ * -FDT_ERR_TRUNCATED, standard meanings
+ */
+#ifndef SWIG /* This function is not useful in Python */
+const void *fdt_getprop_by_offset(const void *fdt, int offset,
+ const char **namep, int *lenp);
+#endif
+
+/**
+ * fdt_getprop_namelen - get property value based on substring
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of the node whose property to find
+ * @name: name of the property to find
+ * @namelen: number of characters of name to consider
+ * @lenp: pointer to an integer variable (will be overwritten) or NULL
+ *
+ * Identical to fdt_getprop(), but only examine the first namelen
+ * characters of name for matching the property name.
+ */
+#ifndef SWIG /* Not available in Python */
+const void *fdt_getprop_namelen(const void *fdt, int nodeoffset,
+ const char *name, int namelen, int *lenp);
+static inline void *fdt_getprop_namelen_w(void *fdt, int nodeoffset,
+ const char *name, int namelen,
+ int *lenp)
+{
+ return (void *)(uintptr_t)fdt_getprop_namelen(fdt, nodeoffset, name,
+ namelen, lenp);
+}
+#endif
+
+/**
+ * fdt_getprop - retrieve the value of a given property
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of the node whose property to find
+ * @name: name of the property to find
+ * @lenp: pointer to an integer variable (will be overwritten) or NULL
+ *
+ * fdt_getprop() retrieves a pointer to the value of the property
+ * named 'name' of the node at offset nodeoffset (this will be a
+ * pointer to within the device blob itself, not a copy of the value).
+ * If lenp is non-NULL, the length of the property value is also
+ * returned, in the integer pointed to by lenp.
+ *
+ * returns:
+ * pointer to the property's value
+ * if lenp is non-NULL, *lenp contains the length of the property
+ * value (>=0)
+ * NULL, on error
+ * if lenp is non-NULL, *lenp contains an error code (<0):
+ * -FDT_ERR_NOTFOUND, node does not have named property
+ * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE
+ * tag
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE,
+ * -FDT_ERR_TRUNCATED, standard meanings
+ */
+const void *fdt_getprop(const void *fdt, int nodeoffset,
+ const char *name, int *lenp);
+static inline void *fdt_getprop_w(void *fdt, int nodeoffset,
+ const char *name, int *lenp)
+{
+ return (void *)(uintptr_t)fdt_getprop(fdt, nodeoffset, name, lenp);
+}
+
+/**
+ * fdt_get_phandle - retrieve the phandle of a given node
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: structure block offset of the node
+ *
+ * fdt_get_phandle() retrieves the phandle of the device tree node at
+ * structure block offset nodeoffset.
+ *
+ * returns:
+ * the phandle of the node at nodeoffset, on success (!= 0, != -1)
+ * 0, if the node has no phandle, or another error occurs
+ */
+uint32_t fdt_get_phandle(const void *fdt, int nodeoffset);
+
+/**
+ * fdt_get_alias_namelen - get alias based on substring
+ * @fdt: pointer to the device tree blob
+ * @name: name of the alias th look up
+ * @namelen: number of characters of name to consider
+ *
+ * Identical to fdt_get_alias(), but only examine the first namelen
+ * characters of name for matching the alias name.
+ */
+#ifndef SWIG /* Not available in Python */
+const char *fdt_get_alias_namelen(const void *fdt,
+ const char *name, int namelen);
+#endif
+
+/**
+ * fdt_get_alias - retrieve the path referenced by a given alias
+ * @fdt: pointer to the device tree blob
+ * @name: name of the alias th look up
+ *
+ * fdt_get_alias() retrieves the value of a given alias. That is, the
+ * value of the property named 'name' in the node /aliases.
+ *
+ * returns:
+ * a pointer to the expansion of the alias named 'name', if it exists
+ * NULL, if the given alias or the /aliases node does not exist
+ */
+const char *fdt_get_alias(const void *fdt, const char *name);
+
+/**
+ * fdt_get_path - determine the full path of a node
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of the node whose path to find
+ * @buf: character buffer to contain the returned path (will be overwritten)
+ * @buflen: size of the character buffer at buf
+ *
+ * fdt_get_path() computes the full path of the node at offset
+ * nodeoffset, and records that path in the buffer at buf.
+ *
+ * NOTE: This function is expensive, as it must scan the device tree
+ * structure from the start to nodeoffset.
+ *
+ * returns:
+ * 0, on success
+ * buf contains the absolute path of the node at
+ * nodeoffset, as a NUL-terminated string.
+ * -FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
+ * -FDT_ERR_NOSPACE, the path of the given node is longer than (bufsize-1)
+ * characters and will not fit in the given buffer.
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE, standard meanings
+ */
+int fdt_get_path(const void *fdt, int nodeoffset, char *buf, int buflen);
+
+/**
+ * fdt_supernode_atdepth_offset - find a specific ancestor of a node
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of the node whose parent to find
+ * @supernodedepth: depth of the ancestor to find
+ * @nodedepth: pointer to an integer variable (will be overwritten) or NULL
+ *
+ * fdt_supernode_atdepth_offset() finds an ancestor of the given node
+ * at a specific depth from the root (where the root itself has depth
+ * 0, its immediate subnodes depth 1 and so forth). So
+ * fdt_supernode_atdepth_offset(fdt, nodeoffset, 0, NULL);
+ * will always return 0, the offset of the root node. If the node at
+ * nodeoffset has depth D, then:
+ * fdt_supernode_atdepth_offset(fdt, nodeoffset, D, NULL);
+ * will return nodeoffset itself.
+ *
+ * NOTE: This function is expensive, as it must scan the device tree
+ * structure from the start to nodeoffset.
+ *
+ * returns:
+ * structure block offset of the node at node offset's ancestor
+ * of depth supernodedepth (>=0), on success
+ * -FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
+ * -FDT_ERR_NOTFOUND, supernodedepth was greater than the depth of
+ * nodeoffset
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE, standard meanings
+ */
+int fdt_supernode_atdepth_offset(const void *fdt, int nodeoffset,
+ int supernodedepth, int *nodedepth);
+
+/**
+ * fdt_node_depth - find the depth of a given node
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of the node whose parent to find
+ *
+ * fdt_node_depth() finds the depth of a given node. The root node
+ * has depth 0, its immediate subnodes depth 1 and so forth.
+ *
+ * NOTE: This function is expensive, as it must scan the device tree
+ * structure from the start to nodeoffset.
+ *
+ * returns:
+ * depth of the node at nodeoffset (>=0), on success
+ * -FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE, standard meanings
+ */
+int fdt_node_depth(const void *fdt, int nodeoffset);
+
+/**
+ * fdt_parent_offset - find the parent of a given node
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of the node whose parent to find
+ *
+ * fdt_parent_offset() locates the parent node of a given node (that
+ * is, it finds the offset of the node which contains the node at
+ * nodeoffset as a subnode).
+ *
+ * NOTE: This function is expensive, as it must scan the device tree
+ * structure from the start to nodeoffset, *twice*.
+ *
+ * returns:
+ * structure block offset of the parent of the node at nodeoffset
+ * (>=0), on success
+ * -FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE, standard meanings
+ */
+int fdt_parent_offset(const void *fdt, int nodeoffset);
+
+/**
+ * fdt_node_offset_by_prop_value - find nodes with a given property value
+ * @fdt: pointer to the device tree blob
+ * @startoffset: only find nodes after this offset
+ * @propname: property name to check
+ * @propval: property value to search for
+ * @proplen: length of the value in propval
+ *
+ * fdt_node_offset_by_prop_value() returns the offset of the first
+ * node after startoffset, which has a property named propname whose
+ * value is of length proplen and has value equal to propval; or if
+ * startoffset is -1, the very first such node in the tree.
+ *
+ * To iterate through all nodes matching the criterion, the following
+ * idiom can be used:
+ * offset = fdt_node_offset_by_prop_value(fdt, -1, propname,
+ * propval, proplen);
+ * while (offset != -FDT_ERR_NOTFOUND) {
+ * // other code here
+ * offset = fdt_node_offset_by_prop_value(fdt, offset, propname,
+ * propval, proplen);
+ * }
+ *
+ * Note the -1 in the first call to the function, if 0 is used here
+ * instead, the function will never locate the root node, even if it
+ * matches the criterion.
+ *
+ * returns:
+ * structure block offset of the located node (>= 0, >startoffset),
+ * on success
+ * -FDT_ERR_NOTFOUND, no node matching the criterion exists in the
+ * tree after startoffset
+ * -FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE, standard meanings
+ */
+int fdt_node_offset_by_prop_value(const void *fdt, int startoffset,
+ const char *propname,
+ const void *propval, int proplen);
+
+/**
+ * fdt_node_offset_by_phandle - find the node with a given phandle
+ * @fdt: pointer to the device tree blob
+ * @phandle: phandle value
+ *
+ * fdt_node_offset_by_phandle() returns the offset of the node
+ * which has the given phandle value. If there is more than one node
+ * in the tree with the given phandle (an invalid tree), results are
+ * undefined.
+ *
+ * returns:
+ * structure block offset of the located node (>= 0), on success
+ * -FDT_ERR_NOTFOUND, no node with that phandle exists
+ * -FDT_ERR_BADPHANDLE, given phandle value was invalid (0 or -1)
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE, standard meanings
+ */
+int fdt_node_offset_by_phandle(const void *fdt, uint32_t phandle);
+
+/**
+ * fdt_node_check_compatible: check a node's compatible property
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of a tree node
+ * @compatible: string to match against
+ *
+ *
+ * fdt_node_check_compatible() returns 0 if the given node contains a
+ * 'compatible' property with the given string as one of its elements,
+ * it returns non-zero otherwise, or on error.
+ *
+ * returns:
+ * 0, if the node has a 'compatible' property listing the given string
+ * 1, if the node has a 'compatible' property, but it does not list
+ * the given string
+ * -FDT_ERR_NOTFOUND, if the given node has no 'compatible' property
+ * -FDT_ERR_BADOFFSET, if nodeoffset does not refer to a BEGIN_NODE tag
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE, standard meanings
+ */
+int fdt_node_check_compatible(const void *fdt, int nodeoffset,
+ const char *compatible);
+
+/**
+ * fdt_node_offset_by_compatible - find nodes with a given 'compatible' value
+ * @fdt: pointer to the device tree blob
+ * @startoffset: only find nodes after this offset
+ * @compatible: 'compatible' string to match against
+ *
+ * fdt_node_offset_by_compatible() returns the offset of the first
+ * node after startoffset, which has a 'compatible' property which
+ * lists the given compatible string; or if startoffset is -1, the
+ * very first such node in the tree.
+ *
+ * To iterate through all nodes matching the criterion, the following
+ * idiom can be used:
+ * offset = fdt_node_offset_by_compatible(fdt, -1, compatible);
+ * while (offset != -FDT_ERR_NOTFOUND) {
+ * // other code here
+ * offset = fdt_node_offset_by_compatible(fdt, offset, compatible);
+ * }
+ *
+ * Note the -1 in the first call to the function, if 0 is used here
+ * instead, the function will never locate the root node, even if it
+ * matches the criterion.
+ *
+ * returns:
+ * structure block offset of the located node (>= 0, >startoffset),
+ * on success
+ * -FDT_ERR_NOTFOUND, no node matching the criterion exists in the
+ * tree after startoffset
+ * -FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE, standard meanings
+ */
+int fdt_node_offset_by_compatible(const void *fdt, int startoffset,
+ const char *compatible);
+
+/**
+ * fdt_stringlist_contains - check a string list property for a string
+ * @strlist: Property containing a list of strings to check
+ * @listlen: Length of property
+ * @str: String to search for
+ *
+ * This is a utility function provided for convenience. The list contains
+ * one or more strings, each terminated by \0, as is found in a device tree
+ * "compatible" property.
+ *
+ * @return: 1 if the string is found in the list, 0 not found, or invalid list
+ */
+int fdt_stringlist_contains(const char *strlist, int listlen, const char *str);
+
+/**
+ * fdt_stringlist_count - count the number of strings in a string list
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of a tree node
+ * @property: name of the property containing the string list
+ * @return:
+ * the number of strings in the given property
+ * -FDT_ERR_BADVALUE if the property value is not NUL-terminated
+ * -FDT_ERR_NOTFOUND if the property does not exist
+ */
+int fdt_stringlist_count(const void *fdt, int nodeoffset, const char *property);
+
+/**
+ * fdt_stringlist_search - find a string in a string list and return its index
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of a tree node
+ * @property: name of the property containing the string list
+ * @string: string to look up in the string list
+ *
+ * Note that it is possible for this function to succeed on property values
+ * that are not NUL-terminated. That's because the function will stop after
+ * finding the first occurrence of @string. This can for example happen with
+ * small-valued cell properties, such as #address-cells, when searching for
+ * the empty string.
+ *
+ * @return:
+ * the index of the string in the list of strings
+ * -FDT_ERR_BADVALUE if the property value is not NUL-terminated
+ * -FDT_ERR_NOTFOUND if the property does not exist or does not contain
+ * the given string
+ */
+int fdt_stringlist_search(const void *fdt, int nodeoffset, const char *property,
+ const char *string);
+
+/**
+ * fdt_stringlist_get() - obtain the string at a given index in a string list
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of a tree node
+ * @property: name of the property containing the string list
+ * @index: index of the string to return
+ * @lenp: return location for the string length or an error code on failure
+ *
+ * Note that this will successfully extract strings from properties with
+ * non-NUL-terminated values. For example on small-valued cell properties
+ * this function will return the empty string.
+ *
+ * If non-NULL, the length of the string (on success) or a negative error-code
+ * (on failure) will be stored in the integer pointer to by lenp.
+ *
+ * @return:
+ * A pointer to the string at the given index in the string list or NULL on
+ * failure. On success the length of the string will be stored in the memory
+ * location pointed to by the lenp parameter, if non-NULL. On failure one of
+ * the following negative error codes will be returned in the lenp parameter
+ * (if non-NULL):
+ * -FDT_ERR_BADVALUE if the property value is not NUL-terminated
+ * -FDT_ERR_NOTFOUND if the property does not exist
+ */
+const char *fdt_stringlist_get(const void *fdt, int nodeoffset,
+ const char *property, int index,
+ int *lenp);
+
+/**********************************************************************/
+/* Read-only functions (addressing related) */
+/**********************************************************************/
+
+/**
+ * FDT_MAX_NCELLS - maximum value for #address-cells and #size-cells
+ *
+ * This is the maximum value for #address-cells, #size-cells and
+ * similar properties that will be processed by libfdt. IEE1275
+ * requires that OF implementations handle values up to 4.
+ * Implementations may support larger values, but in practice higher
+ * values aren't used.
+ */
+#define FDT_MAX_NCELLS 4
+
+/**
+ * fdt_address_cells - retrieve address size for a bus represented in the tree
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of the node to find the address size for
+ *
+ * When the node has a valid #address-cells property, returns its value.
+ *
+ * returns:
+ * 0 <= n < FDT_MAX_NCELLS, on success
+ * 2, if the node has no #address-cells property
+ * -FDT_ERR_BADNCELLS, if the node has a badly formatted or invalid
+ * #address-cells property
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE,
+ * -FDT_ERR_TRUNCATED, standard meanings
+ */
+int fdt_address_cells(const void *fdt, int nodeoffset);
+
+/**
+ * fdt_size_cells - retrieve address range size for a bus represented in the
+ * tree
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of the node to find the address range size for
+ *
+ * When the node has a valid #size-cells property, returns its value.
+ *
+ * returns:
+ * 0 <= n < FDT_MAX_NCELLS, on success
+ * 2, if the node has no #address-cells property
+ * -FDT_ERR_BADNCELLS, if the node has a badly formatted or invalid
+ * #size-cells property
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE,
+ * -FDT_ERR_TRUNCATED, standard meanings
+ */
+int fdt_size_cells(const void *fdt, int nodeoffset);
+
+
+/**********************************************************************/
+/* Write-in-place functions */
+/**********************************************************************/
+
+/**
+ * fdt_setprop_inplace_namelen_partial - change a property's value,
+ * but not its size
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of the node whose property to change
+ * @name: name of the property to change
+ * @namelen: number of characters of name to consider
+ * @idx: index of the property to change in the array
+ * @val: pointer to data to replace the property value with
+ * @len: length of the property value
+ *
+ * Identical to fdt_setprop_inplace(), but modifies the given property
+ * starting from the given index, and using only the first characters
+ * of the name. It is useful when you want to manipulate only one value of
+ * an array and you have a string that doesn't end with \0.
+ */
+#ifndef SWIG /* Not available in Python */
+int fdt_setprop_inplace_namelen_partial(void *fdt, int nodeoffset,
+ const char *name, int namelen,
+ uint32_t idx, const void *val,
+ int len);
+#endif
+
+/**
+ * fdt_setprop_inplace - change a property's value, but not its size
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of the node whose property to change
+ * @name: name of the property to change
+ * @val: pointer to data to replace the property value with
+ * @len: length of the property value
+ *
+ * fdt_setprop_inplace() replaces the value of a given property with
+ * the data in val, of length len. This function cannot change the
+ * size of a property, and so will only work if len is equal to the
+ * current length of the property.
+ *
+ * This function will alter only the bytes in the blob which contain
+ * the given property value, and will not alter or move any other part
+ * of the tree.
+ *
+ * returns:
+ * 0, on success
+ * -FDT_ERR_NOSPACE, if len is not equal to the property's current length
+ * -FDT_ERR_NOTFOUND, node does not have the named property
+ * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE,
+ * -FDT_ERR_TRUNCATED, standard meanings
+ */
+#ifndef SWIG /* Not available in Python */
+int fdt_setprop_inplace(void *fdt, int nodeoffset, const char *name,
+ const void *val, int len);
+#endif
+
+/**
+ * fdt_setprop_inplace_u32 - change the value of a 32-bit integer property
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of the node whose property to change
+ * @name: name of the property to change
+ * @val: 32-bit integer value to replace the property with
+ *
+ * fdt_setprop_inplace_u32() replaces the value of a given property
+ * with the 32-bit integer value in val, converting val to big-endian
+ * if necessary. This function cannot change the size of a property,
+ * and so will only work if the property already exists and has length
+ * 4.
+ *
+ * This function will alter only the bytes in the blob which contain
+ * the given property value, and will not alter or move any other part
+ * of the tree.
+ *
+ * returns:
+ * 0, on success
+ * -FDT_ERR_NOSPACE, if the property's length is not equal to 4
+ * -FDT_ERR_NOTFOUND, node does not have the named property
+ * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE,
+ * -FDT_ERR_TRUNCATED, standard meanings
+ */
+static inline int fdt_setprop_inplace_u32(void *fdt, int nodeoffset,
+ const char *name, uint32_t val)
+{
+ fdt32_t tmp = cpu_to_fdt32(val);
+ return fdt_setprop_inplace(fdt, nodeoffset, name, &tmp, sizeof(tmp));
+}
+
+/**
+ * fdt_setprop_inplace_u64 - change the value of a 64-bit integer property
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of the node whose property to change
+ * @name: name of the property to change
+ * @val: 64-bit integer value to replace the property with
+ *
+ * fdt_setprop_inplace_u64() replaces the value of a given property
+ * with the 64-bit integer value in val, converting val to big-endian
+ * if necessary. This function cannot change the size of a property,
+ * and so will only work if the property already exists and has length
+ * 8.
+ *
+ * This function will alter only the bytes in the blob which contain
+ * the given property value, and will not alter or move any other part
+ * of the tree.
+ *
+ * returns:
+ * 0, on success
+ * -FDT_ERR_NOSPACE, if the property's length is not equal to 8
+ * -FDT_ERR_NOTFOUND, node does not have the named property
+ * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE,
+ * -FDT_ERR_TRUNCATED, standard meanings
+ */
+static inline int fdt_setprop_inplace_u64(void *fdt, int nodeoffset,
+ const char *name, uint64_t val)
+{
+ fdt64_t tmp = cpu_to_fdt64(val);
+ return fdt_setprop_inplace(fdt, nodeoffset, name, &tmp, sizeof(tmp));
+}
+
+/**
+ * fdt_setprop_inplace_cell - change the value of a single-cell property
+ *
+ * This is an alternative name for fdt_setprop_inplace_u32()
+ */
+static inline int fdt_setprop_inplace_cell(void *fdt, int nodeoffset,
+ const char *name, uint32_t val)
+{
+ return fdt_setprop_inplace_u32(fdt, nodeoffset, name, val);
+}
+
+/**
+ * fdt_nop_property - replace a property with nop tags
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of the node whose property to nop
+ * @name: name of the property to nop
+ *
+ * fdt_nop_property() will replace a given property's representation
+ * in the blob with FDT_NOP tags, effectively removing it from the
+ * tree.
+ *
+ * This function will alter only the bytes in the blob which contain
+ * the property, and will not alter or move any other part of the
+ * tree.
+ *
+ * returns:
+ * 0, on success
+ * -FDT_ERR_NOTFOUND, node does not have the named property
+ * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE,
+ * -FDT_ERR_TRUNCATED, standard meanings
+ */
+int fdt_nop_property(void *fdt, int nodeoffset, const char *name);
+
+/**
+ * fdt_nop_node - replace a node (subtree) with nop tags
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of the node to nop
+ *
+ * fdt_nop_node() will replace a given node's representation in the
+ * blob, including all its subnodes, if any, with FDT_NOP tags,
+ * effectively removing it from the tree.
+ *
+ * This function will alter only the bytes in the blob which contain
+ * the node and its properties and subnodes, and will not alter or
+ * move any other part of the tree.
+ *
+ * returns:
+ * 0, on success
+ * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE,
+ * -FDT_ERR_TRUNCATED, standard meanings
+ */
+int fdt_nop_node(void *fdt, int nodeoffset);
+
+/**********************************************************************/
+/* Sequential write functions */
+/**********************************************************************/
+
+int fdt_create(void *buf, int bufsize);
+int fdt_resize(void *fdt, void *buf, int bufsize);
+int fdt_add_reservemap_entry(void *fdt, uint64_t addr, uint64_t size);
+int fdt_finish_reservemap(void *fdt);
+int fdt_begin_node(void *fdt, const char *name);
+int fdt_property(void *fdt, const char *name, const void *val, int len);
+static inline int fdt_property_u32(void *fdt, const char *name, uint32_t val)
+{
+ fdt32_t tmp = cpu_to_fdt32(val);
+ return fdt_property(fdt, name, &tmp, sizeof(tmp));
+}
+static inline int fdt_property_u64(void *fdt, const char *name, uint64_t val)
+{
+ fdt64_t tmp = cpu_to_fdt64(val);
+ return fdt_property(fdt, name, &tmp, sizeof(tmp));
+}
+static inline int fdt_property_cell(void *fdt, const char *name, uint32_t val)
+{
+ return fdt_property_u32(fdt, name, val);
+}
+
+/**
+ * fdt_property_placeholder - add a new property and return a ptr to its value
+ *
+ * @fdt: pointer to the device tree blob
+ * @name: name of property to add
+ * @len: length of property value in bytes
+ * @valp: returns a pointer to where where the value should be placed
+ *
+ * returns:
+ * 0, on success
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_NOSPACE, standard meanings
+ */
+int fdt_property_placeholder(void *fdt, const char *name, int len, void **valp);
+
+#define fdt_property_string(fdt, name, str) \
+ fdt_property(fdt, name, str, strlen(str)+1)
+int fdt_end_node(void *fdt);
+int fdt_finish(void *fdt);
+
+/**********************************************************************/
+/* Read-write functions */
+/**********************************************************************/
+
+int fdt_create_empty_tree(void *buf, int bufsize);
+int fdt_open_into(const void *fdt, void *buf, int bufsize);
+int fdt_pack(void *fdt);
+
+/**
+ * fdt_add_mem_rsv - add one memory reserve map entry
+ * @fdt: pointer to the device tree blob
+ * @address, @size: 64-bit values (native endian)
+ *
+ * Adds a reserve map entry to the given blob reserving a region at
+ * address address of length size.
+ *
+ * This function will insert data into the reserve map and will
+ * therefore change the indexes of some entries in the table.
+ *
+ * returns:
+ * 0, on success
+ * -FDT_ERR_NOSPACE, there is insufficient free space in the blob to
+ * contain the new reservation entry
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE,
+ * -FDT_ERR_BADLAYOUT,
+ * -FDT_ERR_TRUNCATED, standard meanings
+ */
+int fdt_add_mem_rsv(void *fdt, uint64_t address, uint64_t size);
+
+/**
+ * fdt_del_mem_rsv - remove a memory reserve map entry
+ * @fdt: pointer to the device tree blob
+ * @n: entry to remove
+ *
+ * fdt_del_mem_rsv() removes the n-th memory reserve map entry from
+ * the blob.
+ *
+ * This function will delete data from the reservation table and will
+ * therefore change the indexes of some entries in the table.
+ *
+ * returns:
+ * 0, on success
+ * -FDT_ERR_NOTFOUND, there is no entry of the given index (i.e. there
+ * are less than n+1 reserve map entries)
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE,
+ * -FDT_ERR_BADLAYOUT,
+ * -FDT_ERR_TRUNCATED, standard meanings
+ */
+int fdt_del_mem_rsv(void *fdt, int n);
+
+/**
+ * fdt_set_name - change the name of a given node
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: structure block offset of a node
+ * @name: name to give the node
+ *
+ * fdt_set_name() replaces the name (including unit address, if any)
+ * of the given node with the given string. NOTE: this function can't
+ * efficiently check if the new name is unique amongst the given
+ * node's siblings; results are undefined if this function is invoked
+ * with a name equal to one of the given node's siblings.
+ *
+ * This function may insert or delete data from the blob, and will
+ * therefore change the offsets of some existing nodes.
+ *
+ * returns:
+ * 0, on success
+ * -FDT_ERR_NOSPACE, there is insufficient free space in the blob
+ * to contain the new name
+ * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE, standard meanings
+ */
+int fdt_set_name(void *fdt, int nodeoffset, const char *name);
+
+/**
+ * fdt_setprop - create or change a property
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of the node whose property to change
+ * @name: name of the property to change
+ * @val: pointer to data to set the property value to
+ * @len: length of the property value
+ *
+ * fdt_setprop() sets the value of the named property in the given
+ * node to the given value and length, creating the property if it
+ * does not already exist.
+ *
+ * This function may insert or delete data from the blob, and will
+ * therefore change the offsets of some existing nodes.
+ *
+ * returns:
+ * 0, on success
+ * -FDT_ERR_NOSPACE, there is insufficient free space in the blob to
+ * contain the new property value
+ * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
+ * -FDT_ERR_BADLAYOUT,
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE,
+ * -FDT_ERR_BADLAYOUT,
+ * -FDT_ERR_TRUNCATED, standard meanings
+ */
+int fdt_setprop(void *fdt, int nodeoffset, const char *name,
+ const void *val, int len);
+
+/**
+ * fdt_setprop_placeholder - allocate space for a property
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of the node whose property to change
+ * @name: name of the property to change
+ * @len: length of the property value
+ * @prop_data: return pointer to property data
+ *
+ * fdt_setprop_placeholer() allocates the named property in the given node.
+ * If the property exists it is resized. In either case a pointer to the
+ * property data is returned.
+ *
+ * This function may insert or delete data from the blob, and will
+ * therefore change the offsets of some existing nodes.
+ *
+ * returns:
+ * 0, on success
+ * -FDT_ERR_NOSPACE, there is insufficient free space in the blob to
+ * contain the new property value
+ * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
+ * -FDT_ERR_BADLAYOUT,
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE,
+ * -FDT_ERR_BADLAYOUT,
+ * -FDT_ERR_TRUNCATED, standard meanings
+ */
+int fdt_setprop_placeholder(void *fdt, int nodeoffset, const char *name,
+ int len, void **prop_data);
+
+/**
+ * fdt_setprop_u32 - set a property to a 32-bit integer
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of the node whose property to change
+ * @name: name of the property to change
+ * @val: 32-bit integer value for the property (native endian)
+ *
+ * fdt_setprop_u32() sets the value of the named property in the given
+ * node to the given 32-bit integer value (converting to big-endian if
+ * necessary), or creates a new property with that value if it does
+ * not already exist.
+ *
+ * This function may insert or delete data from the blob, and will
+ * therefore change the offsets of some existing nodes.
+ *
+ * returns:
+ * 0, on success
+ * -FDT_ERR_NOSPACE, there is insufficient free space in the blob to
+ * contain the new property value
+ * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
+ * -FDT_ERR_BADLAYOUT,
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE,
+ * -FDT_ERR_BADLAYOUT,
+ * -FDT_ERR_TRUNCATED, standard meanings
+ */
+static inline int fdt_setprop_u32(void *fdt, int nodeoffset, const char *name,
+ uint32_t val)
+{
+ fdt32_t tmp = cpu_to_fdt32(val);
+ return fdt_setprop(fdt, nodeoffset, name, &tmp, sizeof(tmp));
+}
+
+/**
+ * fdt_setprop_u64 - set a property to a 64-bit integer
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of the node whose property to change
+ * @name: name of the property to change
+ * @val: 64-bit integer value for the property (native endian)
+ *
+ * fdt_setprop_u64() sets the value of the named property in the given
+ * node to the given 64-bit integer value (converting to big-endian if
+ * necessary), or creates a new property with that value if it does
+ * not already exist.
+ *
+ * This function may insert or delete data from the blob, and will
+ * therefore change the offsets of some existing nodes.
+ *
+ * returns:
+ * 0, on success
+ * -FDT_ERR_NOSPACE, there is insufficient free space in the blob to
+ * contain the new property value
+ * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
+ * -FDT_ERR_BADLAYOUT,
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE,
+ * -FDT_ERR_BADLAYOUT,
+ * -FDT_ERR_TRUNCATED, standard meanings
+ */
+static inline int fdt_setprop_u64(void *fdt, int nodeoffset, const char *name,
+ uint64_t val)
+{
+ fdt64_t tmp = cpu_to_fdt64(val);
+ return fdt_setprop(fdt, nodeoffset, name, &tmp, sizeof(tmp));
+}
+
+/**
+ * fdt_setprop_cell - set a property to a single cell value
+ *
+ * This is an alternative name for fdt_setprop_u32()
+ */
+static inline int fdt_setprop_cell(void *fdt, int nodeoffset, const char *name,
+ uint32_t val)
+{
+ return fdt_setprop_u32(fdt, nodeoffset, name, val);
+}
+
+/**
+ * fdt_setprop_string - set a property to a string value
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of the node whose property to change
+ * @name: name of the property to change
+ * @str: string value for the property
+ *
+ * fdt_setprop_string() sets the value of the named property in the
+ * given node to the given string value (using the length of the
+ * string to determine the new length of the property), or creates a
+ * new property with that value if it does not already exist.
+ *
+ * This function may insert or delete data from the blob, and will
+ * therefore change the offsets of some existing nodes.
+ *
+ * returns:
+ * 0, on success
+ * -FDT_ERR_NOSPACE, there is insufficient free space in the blob to
+ * contain the new property value
+ * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
+ * -FDT_ERR_BADLAYOUT,
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE,
+ * -FDT_ERR_BADLAYOUT,
+ * -FDT_ERR_TRUNCATED, standard meanings
+ */
+#define fdt_setprop_string(fdt, nodeoffset, name, str) \
+ fdt_setprop((fdt), (nodeoffset), (name), (str), strlen(str)+1)
+
+
+/**
+ * fdt_setprop_empty - set a property to an empty value
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of the node whose property to change
+ * @name: name of the property to change
+ *
+ * fdt_setprop_empty() sets the value of the named property in the
+ * given node to an empty (zero length) value, or creates a new empty
+ * property if it does not already exist.
+ *
+ * This function may insert or delete data from the blob, and will
+ * therefore change the offsets of some existing nodes.
+ *
+ * returns:
+ * 0, on success
+ * -FDT_ERR_NOSPACE, there is insufficient free space in the blob to
+ * contain the new property value
+ * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
+ * -FDT_ERR_BADLAYOUT,
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE,
+ * -FDT_ERR_BADLAYOUT,
+ * -FDT_ERR_TRUNCATED, standard meanings
+ */
+#define fdt_setprop_empty(fdt, nodeoffset, name) \
+ fdt_setprop((fdt), (nodeoffset), (name), NULL, 0)
+
+/**
+ * fdt_appendprop - append to or create a property
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of the node whose property to change
+ * @name: name of the property to append to
+ * @val: pointer to data to append to the property value
+ * @len: length of the data to append to the property value
+ *
+ * fdt_appendprop() appends the value to the named property in the
+ * given node, creating the property if it does not already exist.
+ *
+ * This function may insert data into the blob, and will therefore
+ * change the offsets of some existing nodes.
+ *
+ * returns:
+ * 0, on success
+ * -FDT_ERR_NOSPACE, there is insufficient free space in the blob to
+ * contain the new property value
+ * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
+ * -FDT_ERR_BADLAYOUT,
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE,
+ * -FDT_ERR_BADLAYOUT,
+ * -FDT_ERR_TRUNCATED, standard meanings
+ */
+int fdt_appendprop(void *fdt, int nodeoffset, const char *name,
+ const void *val, int len);
+
+/**
+ * fdt_appendprop_u32 - append a 32-bit integer value to a property
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of the node whose property to change
+ * @name: name of the property to change
+ * @val: 32-bit integer value to append to the property (native endian)
+ *
+ * fdt_appendprop_u32() appends the given 32-bit integer value
+ * (converting to big-endian if necessary) to the value of the named
+ * property in the given node, or creates a new property with that
+ * value if it does not already exist.
+ *
+ * This function may insert data into the blob, and will therefore
+ * change the offsets of some existing nodes.
+ *
+ * returns:
+ * 0, on success
+ * -FDT_ERR_NOSPACE, there is insufficient free space in the blob to
+ * contain the new property value
+ * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
+ * -FDT_ERR_BADLAYOUT,
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE,
+ * -FDT_ERR_BADLAYOUT,
+ * -FDT_ERR_TRUNCATED, standard meanings
+ */
+static inline int fdt_appendprop_u32(void *fdt, int nodeoffset,
+ const char *name, uint32_t val)
+{
+ fdt32_t tmp = cpu_to_fdt32(val);
+ return fdt_appendprop(fdt, nodeoffset, name, &tmp, sizeof(tmp));
+}
+
+/**
+ * fdt_appendprop_u64 - append a 64-bit integer value to a property
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of the node whose property to change
+ * @name: name of the property to change
+ * @val: 64-bit integer value to append to the property (native endian)
+ *
+ * fdt_appendprop_u64() appends the given 64-bit integer value
+ * (converting to big-endian if necessary) to the value of the named
+ * property in the given node, or creates a new property with that
+ * value if it does not already exist.
+ *
+ * This function may insert data into the blob, and will therefore
+ * change the offsets of some existing nodes.
+ *
+ * returns:
+ * 0, on success
+ * -FDT_ERR_NOSPACE, there is insufficient free space in the blob to
+ * contain the new property value
+ * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
+ * -FDT_ERR_BADLAYOUT,
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE,
+ * -FDT_ERR_BADLAYOUT,
+ * -FDT_ERR_TRUNCATED, standard meanings
+ */
+static inline int fdt_appendprop_u64(void *fdt, int nodeoffset,
+ const char *name, uint64_t val)
+{
+ fdt64_t tmp = cpu_to_fdt64(val);
+ return fdt_appendprop(fdt, nodeoffset, name, &tmp, sizeof(tmp));
+}
+
+/**
+ * fdt_appendprop_cell - append a single cell value to a property
+ *
+ * This is an alternative name for fdt_appendprop_u32()
+ */
+static inline int fdt_appendprop_cell(void *fdt, int nodeoffset,
+ const char *name, uint32_t val)
+{
+ return fdt_appendprop_u32(fdt, nodeoffset, name, val);
+}
+
+/**
+ * fdt_appendprop_string - append a string to a property
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of the node whose property to change
+ * @name: name of the property to change
+ * @str: string value to append to the property
+ *
+ * fdt_appendprop_string() appends the given string to the value of
+ * the named property in the given node, or creates a new property
+ * with that value if it does not already exist.
+ *
+ * This function may insert data into the blob, and will therefore
+ * change the offsets of some existing nodes.
+ *
+ * returns:
+ * 0, on success
+ * -FDT_ERR_NOSPACE, there is insufficient free space in the blob to
+ * contain the new property value
+ * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
+ * -FDT_ERR_BADLAYOUT,
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE,
+ * -FDT_ERR_BADLAYOUT,
+ * -FDT_ERR_TRUNCATED, standard meanings
+ */
+#define fdt_appendprop_string(fdt, nodeoffset, name, str) \
+ fdt_appendprop((fdt), (nodeoffset), (name), (str), strlen(str)+1)
+
+/**
+ * fdt_delprop - delete a property
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of the node whose property to nop
+ * @name: name of the property to nop
+ *
+ * fdt_del_property() will delete the given property.
+ *
+ * This function will delete data from the blob, and will therefore
+ * change the offsets of some existing nodes.
+ *
+ * returns:
+ * 0, on success
+ * -FDT_ERR_NOTFOUND, node does not have the named property
+ * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
+ * -FDT_ERR_BADLAYOUT,
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE,
+ * -FDT_ERR_TRUNCATED, standard meanings
+ */
+int fdt_delprop(void *fdt, int nodeoffset, const char *name);
+
+/**
+ * fdt_add_subnode_namelen - creates a new node based on substring
+ * @fdt: pointer to the device tree blob
+ * @parentoffset: structure block offset of a node
+ * @name: name of the subnode to locate
+ * @namelen: number of characters of name to consider
+ *
+ * Identical to fdt_add_subnode(), but use only the first namelen
+ * characters of name as the name of the new node. This is useful for
+ * creating subnodes based on a portion of a larger string, such as a
+ * full path.
+ */
+#ifndef SWIG /* Not available in Python */
+int fdt_add_subnode_namelen(void *fdt, int parentoffset,
+ const char *name, int namelen);
+#endif
+
+/**
+ * fdt_add_subnode - creates a new node
+ * @fdt: pointer to the device tree blob
+ * @parentoffset: structure block offset of a node
+ * @name: name of the subnode to locate
+ *
+ * fdt_add_subnode() creates a new node as a subnode of the node at
+ * structure block offset parentoffset, with the given name (which
+ * should include the unit address, if any).
+ *
+ * This function will insert data into the blob, and will therefore
+ * change the offsets of some existing nodes.
+
+ * returns:
+ * structure block offset of the created nodeequested subnode (>=0), on
+ * success
+ * -FDT_ERR_NOTFOUND, if the requested subnode does not exist
+ * -FDT_ERR_BADOFFSET, if parentoffset did not point to an FDT_BEGIN_NODE
+ * tag
+ * -FDT_ERR_EXISTS, if the node at parentoffset already has a subnode of
+ * the given name
+ * -FDT_ERR_NOSPACE, if there is insufficient free space in the
+ * blob to contain the new node
+ * -FDT_ERR_NOSPACE
+ * -FDT_ERR_BADLAYOUT
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE,
+ * -FDT_ERR_TRUNCATED, standard meanings.
+ */
+int fdt_add_subnode(void *fdt, int parentoffset, const char *name);
+
+/**
+ * fdt_del_node - delete a node (subtree)
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of the node to nop
+ *
+ * fdt_del_node() will remove the given node, including all its
+ * subnodes if any, from the blob.
+ *
+ * This function will delete data from the blob, and will therefore
+ * change the offsets of some existing nodes.
+ *
+ * returns:
+ * 0, on success
+ * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
+ * -FDT_ERR_BADLAYOUT,
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE,
+ * -FDT_ERR_TRUNCATED, standard meanings
+ */
+int fdt_del_node(void *fdt, int nodeoffset);
+
+/**
+ * fdt_overlay_apply - Applies a DT overlay on a base DT
+ * @fdt: pointer to the base device tree blob
+ * @fdto: pointer to the device tree overlay blob
+ *
+ * fdt_overlay_apply() will apply the given device tree overlay on the
+ * given base device tree.
+ *
+ * Expect the base device tree to be modified, even if the function
+ * returns an error.
+ *
+ * returns:
+ * 0, on success
+ * -FDT_ERR_NOSPACE, there's not enough space in the base device tree
+ * -FDT_ERR_NOTFOUND, the overlay points to some inexistant nodes or
+ * properties in the base DT
+ * -FDT_ERR_BADPHANDLE,
+ * -FDT_ERR_BADOVERLAY,
+ * -FDT_ERR_NOPHANDLES,
+ * -FDT_ERR_INTERNAL,
+ * -FDT_ERR_BADLAYOUT,
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADOFFSET,
+ * -FDT_ERR_BADPATH,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTRUCTURE,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_TRUNCATED, standard meanings
+ */
+int fdt_overlay_apply(void *fdt, void *fdto);
+
+/**********************************************************************/
+/* Debugging / informational functions */
+/**********************************************************************/
+
+const char *fdt_strerror(int errval);
+
+#endif /* LIBFDT_H */
diff --git a/scripts/dtc/libfdt/libfdt_env.h b/scripts/dtc/libfdt/libfdt_env.h
new file mode 100644
index 0000000..bd24746
--- /dev/null
+++ b/scripts/dtc/libfdt/libfdt_env.h
@@ -0,0 +1,139 @@
+#ifndef LIBFDT_ENV_H
+#define LIBFDT_ENV_H
+/*
+ * libfdt - Flat Device Tree manipulation
+ * Copyright (C) 2006 David Gibson, IBM Corporation.
+ * Copyright 2012 Kim Phillips, Freescale Semiconductor.
+ *
+ * libfdt is dual licensed: you can use it either under the terms of
+ * the GPL, or the BSD license, at your option.
+ *
+ * a) This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ *
+ * Alternatively,
+ *
+ * b) Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ * 2. Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <stddef.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+
+#ifdef __CHECKER__
+#define FDT_FORCE __attribute__((force))
+#define FDT_BITWISE __attribute__((bitwise))
+#else
+#define FDT_FORCE
+#define FDT_BITWISE
+#endif
+
+typedef uint16_t FDT_BITWISE fdt16_t;
+typedef uint32_t FDT_BITWISE fdt32_t;
+typedef uint64_t FDT_BITWISE fdt64_t;
+
+#define EXTRACT_BYTE(x, n) ((unsigned long long)((uint8_t *)&x)[n])
+#define CPU_TO_FDT16(x) ((EXTRACT_BYTE(x, 0) << 8) | EXTRACT_BYTE(x, 1))
+#define CPU_TO_FDT32(x) ((EXTRACT_BYTE(x, 0) << 24) | (EXTRACT_BYTE(x, 1) << 16) | \
+ (EXTRACT_BYTE(x, 2) << 8) | EXTRACT_BYTE(x, 3))
+#define CPU_TO_FDT64(x) ((EXTRACT_BYTE(x, 0) << 56) | (EXTRACT_BYTE(x, 1) << 48) | \
+ (EXTRACT_BYTE(x, 2) << 40) | (EXTRACT_BYTE(x, 3) << 32) | \
+ (EXTRACT_BYTE(x, 4) << 24) | (EXTRACT_BYTE(x, 5) << 16) | \
+ (EXTRACT_BYTE(x, 6) << 8) | EXTRACT_BYTE(x, 7))
+
+static inline uint16_t fdt16_to_cpu(fdt16_t x)
+{
+ return (FDT_FORCE uint16_t)CPU_TO_FDT16(x);
+}
+static inline fdt16_t cpu_to_fdt16(uint16_t x)
+{
+ return (FDT_FORCE fdt16_t)CPU_TO_FDT16(x);
+}
+
+static inline uint32_t fdt32_to_cpu(fdt32_t x)
+{
+ return (FDT_FORCE uint32_t)CPU_TO_FDT32(x);
+}
+static inline fdt32_t cpu_to_fdt32(uint32_t x)
+{
+ return (FDT_FORCE fdt32_t)CPU_TO_FDT32(x);
+}
+
+static inline uint64_t fdt64_to_cpu(fdt64_t x)
+{
+ return (FDT_FORCE uint64_t)CPU_TO_FDT64(x);
+}
+static inline fdt64_t cpu_to_fdt64(uint64_t x)
+{
+ return (FDT_FORCE fdt64_t)CPU_TO_FDT64(x);
+}
+#undef CPU_TO_FDT64
+#undef CPU_TO_FDT32
+#undef CPU_TO_FDT16
+#undef EXTRACT_BYTE
+
+#ifdef __APPLE__
+#include <AvailabilityMacros.h>
+
+/* strnlen() is not available on Mac OS < 10.7 */
+# if !defined(MAC_OS_X_VERSION_10_7) || (MAC_OS_X_VERSION_MAX_ALLOWED < \
+ MAC_OS_X_VERSION_10_7)
+
+#define strnlen fdt_strnlen
+
+/*
+ * fdt_strnlen: returns the length of a string or max_count - which ever is
+ * smallest.
+ * Input 1 string: the string whose size is to be determined
+ * Input 2 max_count: the maximum value returned by this function
+ * Output: length of the string or max_count (the smallest of the two)
+ */
+static inline size_t fdt_strnlen(const char *string, size_t max_count)
+{
+ const char *p = memchr(string, 0, max_count);
+ return p ? p - string : max_count;
+}
+
+#endif /* !defined(MAC_OS_X_VERSION_10_7) || (MAC_OS_X_VERSION_MAX_ALLOWED <
+ MAC_OS_X_VERSION_10_7) */
+
+#endif /* __APPLE__ */
+
+#endif /* LIBFDT_ENV_H */
diff --git a/scripts/dtc/libfdt/libfdt_internal.h b/scripts/dtc/libfdt/libfdt_internal.h
new file mode 100644
index 0000000..7681e19
--- /dev/null
+++ b/scripts/dtc/libfdt/libfdt_internal.h
@@ -0,0 +1,95 @@
+#ifndef LIBFDT_INTERNAL_H
+#define LIBFDT_INTERNAL_H
+/*
+ * libfdt - Flat Device Tree manipulation
+ * Copyright (C) 2006 David Gibson, IBM Corporation.
+ *
+ * libfdt is dual licensed: you can use it either under the terms of
+ * the GPL, or the BSD license, at your option.
+ *
+ * a) This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ *
+ * Alternatively,
+ *
+ * b) Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ * 2. Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <fdt.h>
+
+#define FDT_ALIGN(x, a) (((x) + (a) - 1) & ~((a) - 1))
+#define FDT_TAGALIGN(x) (FDT_ALIGN((x), FDT_TAGSIZE))
+
+#define FDT_CHECK_HEADER(fdt) \
+ { \
+ int err_; \
+ if ((err_ = fdt_check_header(fdt)) != 0) \
+ return err_; \
+ }
+
+int fdt_check_node_offset_(const void *fdt, int offset);
+int fdt_check_prop_offset_(const void *fdt, int offset);
+const char *fdt_find_string_(const char *strtab, int tabsize, const char *s);
+int fdt_node_end_offset_(void *fdt, int nodeoffset);
+
+static inline const void *fdt_offset_ptr_(const void *fdt, int offset)
+{
+ return (const char *)fdt + fdt_off_dt_struct(fdt) + offset;
+}
+
+static inline void *fdt_offset_ptr_w_(void *fdt, int offset)
+{
+ return (void *)(uintptr_t)fdt_offset_ptr_(fdt, offset);
+}
+
+static inline const struct fdt_reserve_entry *fdt_mem_rsv_(const void *fdt, int n)
+{
+ const struct fdt_reserve_entry *rsv_table =
+ (const struct fdt_reserve_entry *)
+ ((const char *)fdt + fdt_off_mem_rsvmap(fdt));
+
+ return rsv_table + n;
+}
+static inline struct fdt_reserve_entry *fdt_mem_rsv_w_(void *fdt, int n)
+{
+ return (void *)(uintptr_t)fdt_mem_rsv_(fdt, n);
+}
+
+#define FDT_SW_MAGIC (~FDT_MAGIC)
+
+#endif /* LIBFDT_INTERNAL_H */
diff --git a/scripts/dtc/livetree.c b/scripts/dtc/livetree.c
new file mode 100644
index 0000000..6e4c367
--- /dev/null
+++ b/scripts/dtc/livetree.c
@@ -0,0 +1,1033 @@
+/*
+ * (C) Copyright David Gibson <dwg@au1.ibm.com>, IBM Corporation. 2005.
+ *
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ * USA
+ */
+
+#include "dtc.h"
+
+/*
+ * Tree building functions
+ */
+
+void add_label(struct label **labels, char *label)
+{
+ struct label *new;
+
+ /* Make sure the label isn't already there */
+ for_each_label_withdel(*labels, new)
+ if (streq(new->label, label)) {
+ new->deleted = 0;
+ return;
+ }
+
+ new = xmalloc(sizeof(*new));
+ memset(new, 0, sizeof(*new));
+ new->label = label;
+ new->next = *labels;
+ *labels = new;
+}
+
+void delete_labels(struct label **labels)
+{
+ struct label *label;
+
+ for_each_label(*labels, label)
+ label->deleted = 1;
+}
+
+struct property *build_property(char *name, struct data val)
+{
+ struct property *new = xmalloc(sizeof(*new));
+
+ memset(new, 0, sizeof(*new));
+
+ new->name = name;
+ new->val = val;
+
+ return new;
+}
+
+struct property *build_property_delete(char *name)
+{
+ struct property *new = xmalloc(sizeof(*new));
+
+ memset(new, 0, sizeof(*new));
+
+ new->name = name;
+ new->deleted = 1;
+
+ return new;
+}
+
+struct property *chain_property(struct property *first, struct property *list)
+{
+ assert(first->next == NULL);
+
+ first->next = list;
+ return first;
+}
+
+struct property *reverse_properties(struct property *first)
+{
+ struct property *p = first;
+ struct property *head = NULL;
+ struct property *next;
+
+ while (p) {
+ next = p->next;
+ p->next = head;
+ head = p;
+ p = next;
+ }
+ return head;
+}
+
+struct node *build_node(struct property *proplist, struct node *children)
+{
+ struct node *new = xmalloc(sizeof(*new));
+ struct node *child;
+
+ memset(new, 0, sizeof(*new));
+
+ new->proplist = reverse_properties(proplist);
+ new->children = children;
+
+ for_each_child(new, child) {
+ child->parent = new;
+ }
+
+ return new;
+}
+
+struct node *build_node_delete(void)
+{
+ struct node *new = xmalloc(sizeof(*new));
+
+ memset(new, 0, sizeof(*new));
+
+ new->deleted = 1;
+
+ return new;
+}
+
+struct node *name_node(struct node *node, char *name)
+{
+ assert(node->name == NULL);
+
+ node->name = name;
+
+ return node;
+}
+
+struct node *omit_node_if_unused(struct node *node)
+{
+ node->omit_if_unused = 1;
+
+ return node;
+}
+
+struct node *reference_node(struct node *node)
+{
+ node->is_referenced = 1;
+
+ return node;
+}
+
+struct node *merge_nodes(struct node *old_node, struct node *new_node)
+{
+ struct property *new_prop, *old_prop;
+ struct node *new_child, *old_child;
+ struct label *l;
+
+ old_node->deleted = 0;
+
+ /* Add new node labels to old node */
+ for_each_label_withdel(new_node->labels, l)
+ add_label(&old_node->labels, l->label);
+
+ /* Move properties from the new node to the old node. If there
+ * is a collision, replace the old value with the new */
+ while (new_node->proplist) {
+ /* Pop the property off the list */
+ new_prop = new_node->proplist;
+ new_node->proplist = new_prop->next;
+ new_prop->next = NULL;
+
+ if (new_prop->deleted) {
+ delete_property_by_name(old_node, new_prop->name);
+ free(new_prop);
+ continue;
+ }
+
+ /* Look for a collision, set new value if there is */
+ for_each_property_withdel(old_node, old_prop) {
+ if (streq(old_prop->name, new_prop->name)) {
+ /* Add new labels to old property */
+ for_each_label_withdel(new_prop->labels, l)
+ add_label(&old_prop->labels, l->label);
+
+ old_prop->val = new_prop->val;
+ old_prop->deleted = 0;
+ free(new_prop);
+ new_prop = NULL;
+ break;
+ }
+ }
+
+ /* if no collision occurred, add property to the old node. */
+ if (new_prop)
+ add_property(old_node, new_prop);
+ }
+
+ /* Move the override child nodes into the primary node. If
+ * there is a collision, then merge the nodes. */
+ while (new_node->children) {
+ /* Pop the child node off the list */
+ new_child = new_node->children;
+ new_node->children = new_child->next_sibling;
+ new_child->parent = NULL;
+ new_child->next_sibling = NULL;
+
+ if (new_child->deleted) {
+ delete_node_by_name(old_node, new_child->name);
+ free(new_child);
+ continue;
+ }
+
+ /* Search for a collision. Merge if there is */
+ for_each_child_withdel(old_node, old_child) {
+ if (streq(old_child->name, new_child->name)) {
+ merge_nodes(old_child, new_child);
+ new_child = NULL;
+ break;
+ }
+ }
+
+ /* if no collision occurred, add child to the old node. */
+ if (new_child)
+ add_child(old_node, new_child);
+ }
+
+ /* The new node contents are now merged into the old node. Free
+ * the new node. */
+ free(new_node);
+
+ return old_node;
+}
+
+struct node * add_orphan_node(struct node *dt, struct node *new_node, char *ref)
+{
+ static unsigned int next_orphan_fragment = 0;
+ struct node *node;
+ struct property *p;
+ struct data d = empty_data;
+ char *name;
+
+ if (ref[0] == '/') {
+ d = data_append_data(d, ref, strlen(ref) + 1);
+
+ p = build_property("target-path", d);
+ } else {
+ d = data_add_marker(d, REF_PHANDLE, ref);
+ d = data_append_integer(d, 0xffffffff, 32);
+
+ p = build_property("target", d);
+ }
+
+ xasprintf(&name, "fragment@%u",
+ next_orphan_fragment++);
+ name_node(new_node, "__overlay__");
+ node = build_node(p, new_node);
+ name_node(node, name);
+
+ add_child(dt, node);
+ return dt;
+}
+
+struct node *chain_node(struct node *first, struct node *list)
+{
+ assert(first->next_sibling == NULL);
+
+ first->next_sibling = list;
+ return first;
+}
+
+void add_property(struct node *node, struct property *prop)
+{
+ struct property **p;
+
+ prop->next = NULL;
+
+ p = &node->proplist;
+ while (*p)
+ p = &((*p)->next);
+
+ *p = prop;
+}
+
+void delete_property_by_name(struct node *node, char *name)
+{
+ struct property *prop = node->proplist;
+
+ while (prop) {
+ if (streq(prop->name, name)) {
+ delete_property(prop);
+ return;
+ }
+ prop = prop->next;
+ }
+}
+
+void delete_property(struct property *prop)
+{
+ prop->deleted = 1;
+ delete_labels(&prop->labels);
+}
+
+void add_child(struct node *parent, struct node *child)
+{
+ struct node **p;
+
+ child->next_sibling = NULL;
+ child->parent = parent;
+
+ p = &parent->children;
+ while (*p)
+ p = &((*p)->next_sibling);
+
+ *p = child;
+}
+
+void delete_node_by_name(struct node *parent, char *name)
+{
+ struct node *node = parent->children;
+
+ while (node) {
+ if (streq(node->name, name)) {
+ delete_node(node);
+ return;
+ }
+ node = node->next_sibling;
+ }
+}
+
+void delete_node(struct node *node)
+{
+ struct property *prop;
+ struct node *child;
+
+ node->deleted = 1;
+ for_each_child(node, child)
+ delete_node(child);
+ for_each_property(node, prop)
+ delete_property(prop);
+ delete_labels(&node->labels);
+}
+
+void append_to_property(struct node *node,
+ char *name, const void *data, int len)
+{
+ struct data d;
+ struct property *p;
+
+ p = get_property(node, name);
+ if (p) {
+ d = data_append_data(p->val, data, len);
+ p->val = d;
+ } else {
+ d = data_append_data(empty_data, data, len);
+ p = build_property(name, d);
+ add_property(node, p);
+ }
+}
+
+struct reserve_info *build_reserve_entry(uint64_t address, uint64_t size)
+{
+ struct reserve_info *new = xmalloc(sizeof(*new));
+
+ memset(new, 0, sizeof(*new));
+
+ new->address = address;
+ new->size = size;
+
+ return new;
+}
+
+struct reserve_info *chain_reserve_entry(struct reserve_info *first,
+ struct reserve_info *list)
+{
+ assert(first->next == NULL);
+
+ first->next = list;
+ return first;
+}
+
+struct reserve_info *add_reserve_entry(struct reserve_info *list,
+ struct reserve_info *new)
+{
+ struct reserve_info *last;
+
+ new->next = NULL;
+
+ if (! list)
+ return new;
+
+ for (last = list; last->next; last = last->next)
+ ;
+
+ last->next = new;
+
+ return list;
+}
+
+struct dt_info *build_dt_info(unsigned int dtsflags,
+ struct reserve_info *reservelist,
+ struct node *tree, uint32_t boot_cpuid_phys)
+{
+ struct dt_info *dti;
+
+ dti = xmalloc(sizeof(*dti));
+ dti->dtsflags = dtsflags;
+ dti->reservelist = reservelist;
+ dti->dt = tree;
+ dti->boot_cpuid_phys = boot_cpuid_phys;
+
+ return dti;
+}
+
+/*
+ * Tree accessor functions
+ */
+
+const char *get_unitname(struct node *node)
+{
+ if (node->name[node->basenamelen] == '\0')
+ return "";
+ else
+ return node->name + node->basenamelen + 1;
+}
+
+struct property *get_property(struct node *node, const char *propname)
+{
+ struct property *prop;
+
+ for_each_property(node, prop)
+ if (streq(prop->name, propname))
+ return prop;
+
+ return NULL;
+}
+
+cell_t propval_cell(struct property *prop)
+{
+ assert(prop->val.len == sizeof(cell_t));
+ return fdt32_to_cpu(*((fdt32_t *)prop->val.val));
+}
+
+cell_t propval_cell_n(struct property *prop, int n)
+{
+ assert(prop->val.len / sizeof(cell_t) >= n);
+ return fdt32_to_cpu(*((fdt32_t *)prop->val.val + n));
+}
+
+struct property *get_property_by_label(struct node *tree, const char *label,
+ struct node **node)
+{
+ struct property *prop;
+ struct node *c;
+
+ *node = tree;
+
+ for_each_property(tree, prop) {
+ struct label *l;
+
+ for_each_label(prop->labels, l)
+ if (streq(l->label, label))
+ return prop;
+ }
+
+ for_each_child(tree, c) {
+ prop = get_property_by_label(c, label, node);
+ if (prop)
+ return prop;
+ }
+
+ *node = NULL;
+ return NULL;
+}
+
+struct marker *get_marker_label(struct node *tree, const char *label,
+ struct node **node, struct property **prop)
+{
+ struct marker *m;
+ struct property *p;
+ struct node *c;
+
+ *node = tree;
+
+ for_each_property(tree, p) {
+ *prop = p;
+ m = p->val.markers;
+ for_each_marker_of_type(m, LABEL)
+ if (streq(m->ref, label))
+ return m;
+ }
+
+ for_each_child(tree, c) {
+ m = get_marker_label(c, label, node, prop);
+ if (m)
+ return m;
+ }
+
+ *prop = NULL;
+ *node = NULL;
+ return NULL;
+}
+
+struct node *get_subnode(struct node *node, const char *nodename)
+{
+ struct node *child;
+
+ for_each_child(node, child)
+ if (streq(child->name, nodename))
+ return child;
+
+ return NULL;
+}
+
+struct node *get_node_by_path(struct node *tree, const char *path)
+{
+ const char *p;
+ struct node *child;
+
+ if (!path || ! (*path)) {
+ if (tree->deleted)
+ return NULL;
+ return tree;
+ }
+
+ while (path[0] == '/')
+ path++;
+
+ p = strchr(path, '/');
+
+ for_each_child(tree, child) {
+ if (p && (strlen(child->name) == p-path) &&
+ strprefixeq(path, p - path, child->name))
+ return get_node_by_path(child, p+1);
+ else if (!p && streq(path, child->name))
+ return child;
+ }
+
+ return NULL;
+}
+
+struct node *get_node_by_label(struct node *tree, const char *label)
+{
+ struct node *child, *node;
+ struct label *l;
+
+ assert(label && (strlen(label) > 0));
+
+ for_each_label(tree->labels, l)
+ if (streq(l->label, label))
+ return tree;
+
+ for_each_child(tree, child) {
+ node = get_node_by_label(child, label);
+ if (node)
+ return node;
+ }
+
+ return NULL;
+}
+
+struct node *get_node_by_phandle(struct node *tree, cell_t phandle)
+{
+ struct node *child, *node;
+
+ if ((phandle == 0) || (phandle == -1)) {
+ assert(generate_fixups);
+ return NULL;
+ }
+
+ if (tree->phandle == phandle) {
+ if (tree->deleted)
+ return NULL;
+ return tree;
+ }
+
+ for_each_child(tree, child) {
+ node = get_node_by_phandle(child, phandle);
+ if (node)
+ return node;
+ }
+
+ return NULL;
+}
+
+struct node *get_node_by_ref(struct node *tree, const char *ref)
+{
+ if (streq(ref, "/"))
+ return tree;
+ else if (ref[0] == '/')
+ return get_node_by_path(tree, ref);
+ else
+ return get_node_by_label(tree, ref);
+}
+
+cell_t get_node_phandle(struct node *root, struct node *node)
+{
+ static cell_t phandle = 1; /* FIXME: ick, static local */
+
+ if ((node->phandle != 0) && (node->phandle != -1))
+ return node->phandle;
+
+ while (get_node_by_phandle(root, phandle))
+ phandle++;
+
+ node->phandle = phandle;
+
+ if (!get_property(node, "linux,phandle")
+ && (phandle_format & PHANDLE_LEGACY))
+ add_property(node,
+ build_property("linux,phandle",
+ data_append_cell(empty_data, phandle)));
+
+ if (!get_property(node, "phandle")
+ && (phandle_format & PHANDLE_EPAPR))
+ add_property(node,
+ build_property("phandle",
+ data_append_cell(empty_data, phandle)));
+
+ /* If the node *does* have a phandle property, we must
+ * be dealing with a self-referencing phandle, which will be
+ * fixed up momentarily in the caller */
+
+ return node->phandle;
+}
+
+uint32_t guess_boot_cpuid(struct node *tree)
+{
+ struct node *cpus, *bootcpu;
+ struct property *reg;
+
+ cpus = get_node_by_path(tree, "/cpus");
+ if (!cpus)
+ return 0;
+
+
+ bootcpu = cpus->children;
+ if (!bootcpu)
+ return 0;
+
+ reg = get_property(bootcpu, "reg");
+ if (!reg || (reg->val.len != sizeof(uint32_t)))
+ return 0;
+
+ /* FIXME: Sanity check node? */
+
+ return propval_cell(reg);
+}
+
+static int cmp_reserve_info(const void *ax, const void *bx)
+{
+ const struct reserve_info *a, *b;
+
+ a = *((const struct reserve_info * const *)ax);
+ b = *((const struct reserve_info * const *)bx);
+
+ if (a->address < b->address)
+ return -1;
+ else if (a->address > b->address)
+ return 1;
+ else if (a->size < b->size)
+ return -1;
+ else if (a->size > b->size)
+ return 1;
+ else
+ return 0;
+}
+
+static void sort_reserve_entries(struct dt_info *dti)
+{
+ struct reserve_info *ri, **tbl;
+ int n = 0, i = 0;
+
+ for (ri = dti->reservelist;
+ ri;
+ ri = ri->next)
+ n++;
+
+ if (n == 0)
+ return;
+
+ tbl = xmalloc(n * sizeof(*tbl));
+
+ for (ri = dti->reservelist;
+ ri;
+ ri = ri->next)
+ tbl[i++] = ri;
+
+ qsort(tbl, n, sizeof(*tbl), cmp_reserve_info);
+
+ dti->reservelist = tbl[0];
+ for (i = 0; i < (n-1); i++)
+ tbl[i]->next = tbl[i+1];
+ tbl[n-1]->next = NULL;
+
+ free(tbl);
+}
+
+static int cmp_prop(const void *ax, const void *bx)
+{
+ const struct property *a, *b;
+
+ a = *((const struct property * const *)ax);
+ b = *((const struct property * const *)bx);
+
+ return strcmp(a->name, b->name);
+}
+
+static void sort_properties(struct node *node)
+{
+ int n = 0, i = 0;
+ struct property *prop, **tbl;
+
+ for_each_property_withdel(node, prop)
+ n++;
+
+ if (n == 0)
+ return;
+
+ tbl = xmalloc(n * sizeof(*tbl));
+
+ for_each_property_withdel(node, prop)
+ tbl[i++] = prop;
+
+ qsort(tbl, n, sizeof(*tbl), cmp_prop);
+
+ node->proplist = tbl[0];
+ for (i = 0; i < (n-1); i++)
+ tbl[i]->next = tbl[i+1];
+ tbl[n-1]->next = NULL;
+
+ free(tbl);
+}
+
+static int cmp_subnode(const void *ax, const void *bx)
+{
+ const struct node *a, *b;
+
+ a = *((const struct node * const *)ax);
+ b = *((const struct node * const *)bx);
+
+ return strcmp(a->name, b->name);
+}
+
+static void sort_subnodes(struct node *node)
+{
+ int n = 0, i = 0;
+ struct node *subnode, **tbl;
+
+ for_each_child_withdel(node, subnode)
+ n++;
+
+ if (n == 0)
+ return;
+
+ tbl = xmalloc(n * sizeof(*tbl));
+
+ for_each_child_withdel(node, subnode)
+ tbl[i++] = subnode;
+
+ qsort(tbl, n, sizeof(*tbl), cmp_subnode);
+
+ node->children = tbl[0];
+ for (i = 0; i < (n-1); i++)
+ tbl[i]->next_sibling = tbl[i+1];
+ tbl[n-1]->next_sibling = NULL;
+
+ free(tbl);
+}
+
+static void sort_node(struct node *node)
+{
+ struct node *c;
+
+ sort_properties(node);
+ sort_subnodes(node);
+ for_each_child_withdel(node, c)
+ sort_node(c);
+}
+
+void sort_tree(struct dt_info *dti)
+{
+ sort_reserve_entries(dti);
+ sort_node(dti->dt);
+}
+
+/* utility helper to avoid code duplication */
+static struct node *build_and_name_child_node(struct node *parent, char *name)
+{
+ struct node *node;
+
+ node = build_node(NULL, NULL);
+ name_node(node, xstrdup(name));
+ add_child(parent, node);
+
+ return node;
+}
+
+static struct node *build_root_node(struct node *dt, char *name)
+{
+ struct node *an;
+
+ an = get_subnode(dt, name);
+ if (!an)
+ an = build_and_name_child_node(dt, name);
+
+ if (!an)
+ die("Could not build root node /%s\n", name);
+
+ return an;
+}
+
+static bool any_label_tree(struct dt_info *dti, struct node *node)
+{
+ struct node *c;
+
+ if (node->labels)
+ return true;
+
+ for_each_child(node, c)
+ if (any_label_tree(dti, c))
+ return true;
+
+ return false;
+}
+
+static void generate_label_tree_internal(struct dt_info *dti,
+ struct node *an, struct node *node,
+ bool allocph)
+{
+ struct node *dt = dti->dt;
+ struct node *c;
+ struct property *p;
+ struct label *l;
+
+ /* if there are labels */
+ if (node->labels) {
+
+ /* now add the label in the node */
+ for_each_label(node->labels, l) {
+
+ /* check whether the label already exists */
+ p = get_property(an, l->label);
+ if (p) {
+ fprintf(stderr, "WARNING: label %s already"
+ " exists in /%s", l->label,
+ an->name);
+ continue;
+ }
+
+ /* insert it */
+ p = build_property(l->label,
+ data_copy_mem(node->fullpath,
+ strlen(node->fullpath) + 1));
+ add_property(an, p);
+ }
+
+ /* force allocation of a phandle for this node */
+ if (allocph)
+ (void)get_node_phandle(dt, node);
+ }
+
+ for_each_child(node, c)
+ generate_label_tree_internal(dti, an, c, allocph);
+}
+
+static bool any_fixup_tree(struct dt_info *dti, struct node *node)
+{
+ struct node *c;
+ struct property *prop;
+ struct marker *m;
+
+ for_each_property(node, prop) {
+ m = prop->val.markers;
+ for_each_marker_of_type(m, REF_PHANDLE) {
+ if (!get_node_by_ref(dti->dt, m->ref))
+ return true;
+ }
+ }
+
+ for_each_child(node, c) {
+ if (any_fixup_tree(dti, c))
+ return true;
+ }
+
+ return false;
+}
+
+static void add_fixup_entry(struct dt_info *dti, struct node *fn,
+ struct node *node, struct property *prop,
+ struct marker *m)
+{
+ char *entry;
+
+ /* m->ref can only be a REF_PHANDLE, but check anyway */
+ assert(m->type == REF_PHANDLE);
+
+ /* there shouldn't be any ':' in the arguments */
+ if (strchr(node->fullpath, ':') || strchr(prop->name, ':'))
+ die("arguments should not contain ':'\n");
+
+ xasprintf(&entry, "%s:%s:%u",
+ node->fullpath, prop->name, m->offset);
+ append_to_property(fn, m->ref, entry, strlen(entry) + 1);
+
+ free(entry);
+}
+
+static void generate_fixups_tree_internal(struct dt_info *dti,
+ struct node *fn,
+ struct node *node)
+{
+ struct node *dt = dti->dt;
+ struct node *c;
+ struct property *prop;
+ struct marker *m;
+ struct node *refnode;
+
+ for_each_property(node, prop) {
+ m = prop->val.markers;
+ for_each_marker_of_type(m, REF_PHANDLE) {
+ refnode = get_node_by_ref(dt, m->ref);
+ if (!refnode)
+ add_fixup_entry(dti, fn, node, prop, m);
+ }
+ }
+
+ for_each_child(node, c)
+ generate_fixups_tree_internal(dti, fn, c);
+}
+
+static bool any_local_fixup_tree(struct dt_info *dti, struct node *node)
+{
+ struct node *c;
+ struct property *prop;
+ struct marker *m;
+
+ for_each_property(node, prop) {
+ m = prop->val.markers;
+ for_each_marker_of_type(m, REF_PHANDLE) {
+ if (get_node_by_ref(dti->dt, m->ref))
+ return true;
+ }
+ }
+
+ for_each_child(node, c) {
+ if (any_local_fixup_tree(dti, c))
+ return true;
+ }
+
+ return false;
+}
+
+static void add_local_fixup_entry(struct dt_info *dti,
+ struct node *lfn, struct node *node,
+ struct property *prop, struct marker *m,
+ struct node *refnode)
+{
+ struct node *wn, *nwn; /* local fixup node, walk node, new */
+ fdt32_t value_32;
+ char **compp;
+ int i, depth;
+
+ /* walk back retreiving depth */
+ depth = 0;
+ for (wn = node; wn; wn = wn->parent)
+ depth++;
+
+ /* allocate name array */
+ compp = xmalloc(sizeof(*compp) * depth);
+
+ /* store names in the array */
+ for (wn = node, i = depth - 1; wn; wn = wn->parent, i--)
+ compp[i] = wn->name;
+
+ /* walk the path components creating nodes if they don't exist */
+ for (wn = lfn, i = 1; i < depth; i++, wn = nwn) {
+ /* if no node exists, create it */
+ nwn = get_subnode(wn, compp[i]);
+ if (!nwn)
+ nwn = build_and_name_child_node(wn, compp[i]);
+ }
+
+ free(compp);
+
+ value_32 = cpu_to_fdt32(m->offset);
+ append_to_property(wn, prop->name, &value_32, sizeof(value_32));
+}
+
+static void generate_local_fixups_tree_internal(struct dt_info *dti,
+ struct node *lfn,
+ struct node *node)
+{
+ struct node *dt = dti->dt;
+ struct node *c;
+ struct property *prop;
+ struct marker *m;
+ struct node *refnode;
+
+ for_each_property(node, prop) {
+ m = prop->val.markers;
+ for_each_marker_of_type(m, REF_PHANDLE) {
+ refnode = get_node_by_ref(dt, m->ref);
+ if (refnode)
+ add_local_fixup_entry(dti, lfn, node, prop, m, refnode);
+ }
+ }
+
+ for_each_child(node, c)
+ generate_local_fixups_tree_internal(dti, lfn, c);
+}
+
+void generate_label_tree(struct dt_info *dti, char *name, bool allocph)
+{
+ if (!any_label_tree(dti, dti->dt))
+ return;
+ generate_label_tree_internal(dti, build_root_node(dti->dt, name),
+ dti->dt, allocph);
+}
+
+void generate_fixups_tree(struct dt_info *dti, char *name)
+{
+ if (!any_fixup_tree(dti, dti->dt))
+ return;
+ generate_fixups_tree_internal(dti, build_root_node(dti->dt, name),
+ dti->dt);
+}
+
+void generate_local_fixups_tree(struct dt_info *dti, char *name)
+{
+ if (!any_local_fixup_tree(dti, dti->dt))
+ return;
+ generate_local_fixups_tree_internal(dti, build_root_node(dti->dt, name),
+ dti->dt);
+}
diff --git a/scripts/dtc/srcpos.c b/scripts/dtc/srcpos.c
new file mode 100644
index 0000000..cb6ed0e
--- /dev/null
+++ b/scripts/dtc/srcpos.c
@@ -0,0 +1,297 @@
+/*
+ * Copyright 2007 Jon Loeliger, Freescale Semiconductor, Inc.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ * USA
+ */
+
+#define _GNU_SOURCE
+
+#include <stdio.h>
+
+#include "dtc.h"
+#include "srcpos.h"
+
+/* A node in our list of directories to search for source/include files */
+struct search_path {
+ struct search_path *next; /* next node in list, NULL for end */
+ const char *dirname; /* name of directory to search */
+};
+
+/* This is the list of directories that we search for source files */
+static struct search_path *search_path_head, **search_path_tail;
+
+
+static char *get_dirname(const char *path)
+{
+ const char *slash = strrchr(path, '/');
+
+ if (slash) {
+ int len = slash - path;
+ char *dir = xmalloc(len + 1);
+
+ memcpy(dir, path, len);
+ dir[len] = '\0';
+ return dir;
+ }
+ return NULL;
+}
+
+FILE *depfile; /* = NULL */
+struct srcfile_state *current_srcfile; /* = NULL */
+
+/* Detect infinite include recursion. */
+#define MAX_SRCFILE_DEPTH (100)
+static int srcfile_depth; /* = 0 */
+
+
+/**
+ * Try to open a file in a given directory.
+ *
+ * If the filename is an absolute path, then dirname is ignored. If it is a
+ * relative path, then we look in that directory for the file.
+ *
+ * @param dirname Directory to look in, or NULL for none
+ * @param fname Filename to look for
+ * @param fp Set to NULL if file did not open
+ * @return allocated filename on success (caller must free), NULL on failure
+ */
+static char *try_open(const char *dirname, const char *fname, FILE **fp)
+{
+ char *fullname;
+
+ if (!dirname || fname[0] == '/')
+ fullname = xstrdup(fname);
+ else
+ fullname = join_path(dirname, fname);
+
+ *fp = fopen(fullname, "rb");
+ if (!*fp) {
+ free(fullname);
+ fullname = NULL;
+ }
+
+ return fullname;
+}
+
+/**
+ * Open a file for read access
+ *
+ * If it is a relative filename, we search the full search path for it.
+ *
+ * @param fname Filename to open
+ * @param fp Returns pointer to opened FILE, or NULL on failure
+ * @return pointer to allocated filename, which caller must free
+ */
+static char *fopen_any_on_path(const char *fname, FILE **fp)
+{
+ const char *cur_dir = NULL;
+ struct search_path *node;
+ char *fullname;
+
+ /* Try current directory first */
+ assert(fp);
+ if (current_srcfile)
+ cur_dir = current_srcfile->dir;
+ fullname = try_open(cur_dir, fname, fp);
+
+ /* Failing that, try each search path in turn */
+ for (node = search_path_head; !*fp && node; node = node->next)
+ fullname = try_open(node->dirname, fname, fp);
+
+ return fullname;
+}
+
+FILE *srcfile_relative_open(const char *fname, char **fullnamep)
+{
+ FILE *f;
+ char *fullname;
+
+ if (streq(fname, "-")) {
+ f = stdin;
+ fullname = xstrdup("<stdin>");
+ } else {
+ fullname = fopen_any_on_path(fname, &f);
+ if (!f)
+ die("Couldn't open \"%s\": %s\n", fname,
+ strerror(errno));
+ }
+
+ if (depfile)
+ fprintf(depfile, " %s", fullname);
+
+ if (fullnamep)
+ *fullnamep = fullname;
+ else
+ free(fullname);
+
+ return f;
+}
+
+void srcfile_push(const char *fname)
+{
+ struct srcfile_state *srcfile;
+
+ if (srcfile_depth++ >= MAX_SRCFILE_DEPTH)
+ die("Includes nested too deeply");
+
+ srcfile = xmalloc(sizeof(*srcfile));
+
+ srcfile->f = srcfile_relative_open(fname, &srcfile->name);
+ srcfile->dir = get_dirname(srcfile->name);
+ srcfile->prev = current_srcfile;
+
+ srcfile->lineno = 1;
+ srcfile->colno = 1;
+
+ current_srcfile = srcfile;
+}
+
+bool srcfile_pop(void)
+{
+ struct srcfile_state *srcfile = current_srcfile;
+
+ assert(srcfile);
+
+ current_srcfile = srcfile->prev;
+
+ if (fclose(srcfile->f))
+ die("Error closing \"%s\": %s\n", srcfile->name,
+ strerror(errno));
+
+ /* FIXME: We allow the srcfile_state structure to leak,
+ * because it could still be referenced from a location
+ * variable being carried through the parser somewhere. To
+ * fix this we could either allocate all the files from a
+ * table, or use a pool allocator. */
+
+ return current_srcfile ? true : false;
+}
+
+void srcfile_add_search_path(const char *dirname)
+{
+ struct search_path *node;
+
+ /* Create the node */
+ node = xmalloc(sizeof(*node));
+ node->next = NULL;
+ node->dirname = xstrdup(dirname);
+
+ /* Add to the end of our list */
+ if (search_path_tail)
+ *search_path_tail = node;
+ else
+ search_path_head = node;
+ search_path_tail = &node->next;
+}
+
+/*
+ * The empty source position.
+ */
+
+struct srcpos srcpos_empty = {
+ .first_line = 0,
+ .first_column = 0,
+ .last_line = 0,
+ .last_column = 0,
+ .file = NULL,
+};
+
+void srcpos_update(struct srcpos *pos, const char *text, int len)
+{
+ int i;
+
+ pos->file = current_srcfile;
+
+ pos->first_line = current_srcfile->lineno;
+ pos->first_column = current_srcfile->colno;
+
+ for (i = 0; i < len; i++)
+ if (text[i] == '\n') {
+ current_srcfile->lineno++;
+ current_srcfile->colno = 1;
+ } else {
+ current_srcfile->colno++;
+ }
+
+ pos->last_line = current_srcfile->lineno;
+ pos->last_column = current_srcfile->colno;
+}
+
+struct srcpos *
+srcpos_copy(struct srcpos *pos)
+{
+ struct srcpos *pos_new;
+
+ pos_new = xmalloc(sizeof(struct srcpos));
+ memcpy(pos_new, pos, sizeof(struct srcpos));
+
+ return pos_new;
+}
+
+char *
+srcpos_string(struct srcpos *pos)
+{
+ const char *fname = "<no-file>";
+ char *pos_str;
+
+ if (pos->file && pos->file->name)
+ fname = pos->file->name;
+
+
+ if (pos->first_line != pos->last_line)
+ xasprintf(&pos_str, "%s:%d.%d-%d.%d", fname,
+ pos->first_line, pos->first_column,
+ pos->last_line, pos->last_column);
+ else if (pos->first_column != pos->last_column)
+ xasprintf(&pos_str, "%s:%d.%d-%d", fname,
+ pos->first_line, pos->first_column,
+ pos->last_column);
+ else
+ xasprintf(&pos_str, "%s:%d.%d", fname,
+ pos->first_line, pos->first_column);
+
+ return pos_str;
+}
+
+void srcpos_verror(struct srcpos *pos, const char *prefix,
+ const char *fmt, va_list va)
+{
+ char *srcstr;
+
+ srcstr = srcpos_string(pos);
+
+ fprintf(stderr, "%s: %s ", prefix, srcstr);
+ vfprintf(stderr, fmt, va);
+ fprintf(stderr, "\n");
+
+ free(srcstr);
+}
+
+void srcpos_error(struct srcpos *pos, const char *prefix,
+ const char *fmt, ...)
+{
+ va_list va;
+
+ va_start(va, fmt);
+ srcpos_verror(pos, prefix, fmt, va);
+ va_end(va);
+}
+
+void srcpos_set_line(char *f, int l)
+{
+ current_srcfile->name = f;
+ current_srcfile->lineno = l;
+}
diff --git a/scripts/dtc/srcpos.h b/scripts/dtc/srcpos.h
new file mode 100644
index 0000000..9ded12a
--- /dev/null
+++ b/scripts/dtc/srcpos.h
@@ -0,0 +1,117 @@
+/*
+ * Copyright 2007 Jon Loeliger, Freescale Semiconductor, Inc.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ * USA
+ */
+
+#ifndef SRCPOS_H
+#define SRCPOS_H
+
+#include <stdio.h>
+#include <stdbool.h>
+#include "util.h"
+
+struct srcfile_state {
+ FILE *f;
+ char *name;
+ char *dir;
+ int lineno, colno;
+ struct srcfile_state *prev;
+};
+
+extern FILE *depfile; /* = NULL */
+extern struct srcfile_state *current_srcfile; /* = NULL */
+
+/**
+ * Open a source file.
+ *
+ * If the source file is a relative pathname, then it is searched for in the
+ * current directory (the directory of the last source file read) and after
+ * that in the search path.
+ *
+ * We work through the search path in order from the first path specified to
+ * the last.
+ *
+ * If the file is not found, then this function does not return, but calls
+ * die().
+ *
+ * @param fname Filename to search
+ * @param fullnamep If non-NULL, it is set to the allocated filename of the
+ * file that was opened. The caller is then responsible
+ * for freeing the pointer.
+ * @return pointer to opened FILE
+ */
+FILE *srcfile_relative_open(const char *fname, char **fullnamep);
+
+void srcfile_push(const char *fname);
+bool srcfile_pop(void);
+
+/**
+ * Add a new directory to the search path for input files
+ *
+ * The new path is added at the end of the list.
+ *
+ * @param dirname Directory to add
+ */
+void srcfile_add_search_path(const char *dirname);
+
+struct srcpos {
+ int first_line;
+ int first_column;
+ int last_line;
+ int last_column;
+ struct srcfile_state *file;
+};
+
+#define YYLTYPE struct srcpos
+
+#define YYLLOC_DEFAULT(Current, Rhs, N) \
+ do { \
+ if (N) { \
+ (Current).first_line = YYRHSLOC(Rhs, 1).first_line; \
+ (Current).first_column = YYRHSLOC(Rhs, 1).first_column; \
+ (Current).last_line = YYRHSLOC(Rhs, N).last_line; \
+ (Current).last_column = YYRHSLOC (Rhs, N).last_column; \
+ (Current).file = YYRHSLOC(Rhs, N).file; \
+ } else { \
+ (Current).first_line = (Current).last_line = \
+ YYRHSLOC(Rhs, 0).last_line; \
+ (Current).first_column = (Current).last_column = \
+ YYRHSLOC(Rhs, 0).last_column; \
+ (Current).file = YYRHSLOC (Rhs, 0).file; \
+ } \
+ } while (0)
+
+
+/*
+ * Fictional source position used for IR nodes that are
+ * created without otherwise knowing a true source position.
+ * For example,constant definitions from the command line.
+ */
+extern struct srcpos srcpos_empty;
+
+extern void srcpos_update(struct srcpos *pos, const char *text, int len);
+extern struct srcpos *srcpos_copy(struct srcpos *pos);
+extern char *srcpos_string(struct srcpos *pos);
+
+extern void PRINTF(3, 0) srcpos_verror(struct srcpos *pos, const char *prefix,
+ const char *fmt, va_list va);
+extern void PRINTF(3, 4) srcpos_error(struct srcpos *pos, const char *prefix,
+ const char *fmt, ...);
+
+extern void srcpos_set_line(char *f, int l);
+
+#endif /* SRCPOS_H */
diff --git a/scripts/dtc/treesource.c b/scripts/dtc/treesource.c
new file mode 100644
index 0000000..2461a3d
--- /dev/null
+++ b/scripts/dtc/treesource.c
@@ -0,0 +1,284 @@
+/*
+ * (C) Copyright David Gibson <dwg@au1.ibm.com>, IBM Corporation. 2005.
+ *
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ * USA
+ */
+
+#include "dtc.h"
+#include "srcpos.h"
+
+extern FILE *yyin;
+extern int yyparse(void);
+extern YYLTYPE yylloc;
+
+struct dt_info *parser_output;
+bool treesource_error;
+
+struct dt_info *dt_from_source(const char *fname)
+{
+ parser_output = NULL;
+ treesource_error = false;
+
+ srcfile_push(fname);
+ yyin = current_srcfile->f;
+ yylloc.file = current_srcfile;
+
+ if (yyparse() != 0)
+ die("Unable to parse input tree\n");
+
+ if (treesource_error)
+ die("Syntax error parsing input tree\n");
+
+ return parser_output;
+}
+
+static void write_prefix(FILE *f, int level)
+{
+ int i;
+
+ for (i = 0; i < level; i++)
+ fputc('\t', f);
+}
+
+static bool isstring(char c)
+{
+ return (isprint((unsigned char)c)
+ || (c == '\0')
+ || strchr("\a\b\t\n\v\f\r", c));
+}
+
+static void write_propval_string(FILE *f, struct data val)
+{
+ const char *str = val.val;
+ int i;
+ struct marker *m = val.markers;
+
+ assert(str[val.len-1] == '\0');
+
+ while (m && (m->offset == 0)) {
+ if (m->type == LABEL)
+ fprintf(f, "%s: ", m->ref);
+ m = m->next;
+ }
+ fprintf(f, "\"");
+
+ for (i = 0; i < (val.len-1); i++) {
+ char c = str[i];
+
+ switch (c) {
+ case '\a':
+ fprintf(f, "\\a");
+ break;
+ case '\b':
+ fprintf(f, "\\b");
+ break;
+ case '\t':
+ fprintf(f, "\\t");
+ break;
+ case '\n':
+ fprintf(f, "\\n");
+ break;
+ case '\v':
+ fprintf(f, "\\v");
+ break;
+ case '\f':
+ fprintf(f, "\\f");
+ break;
+ case '\r':
+ fprintf(f, "\\r");
+ break;
+ case '\\':
+ fprintf(f, "\\\\");
+ break;
+ case '\"':
+ fprintf(f, "\\\"");
+ break;
+ case '\0':
+ fprintf(f, "\", ");
+ while (m && (m->offset <= (i + 1))) {
+ if (m->type == LABEL) {
+ assert(m->offset == (i+1));
+ fprintf(f, "%s: ", m->ref);
+ }
+ m = m->next;
+ }
+ fprintf(f, "\"");
+ break;
+ default:
+ if (isprint((unsigned char)c))
+ fprintf(f, "%c", c);
+ else
+ fprintf(f, "\\x%02hhx", c);
+ }
+ }
+ fprintf(f, "\"");
+
+ /* Wrap up any labels at the end of the value */
+ for_each_marker_of_type(m, LABEL) {
+ assert (m->offset == val.len);
+ fprintf(f, " %s:", m->ref);
+ }
+}
+
+static void write_propval_cells(FILE *f, struct data val)
+{
+ void *propend = val.val + val.len;
+ fdt32_t *cp = (fdt32_t *)val.val;
+ struct marker *m = val.markers;
+
+ fprintf(f, "<");
+ for (;;) {
+ while (m && (m->offset <= ((char *)cp - val.val))) {
+ if (m->type == LABEL) {
+ assert(m->offset == ((char *)cp - val.val));
+ fprintf(f, "%s: ", m->ref);
+ }
+ m = m->next;
+ }
+
+ fprintf(f, "0x%x", fdt32_to_cpu(*cp++));
+ if ((void *)cp >= propend)
+ break;
+ fprintf(f, " ");
+ }
+
+ /* Wrap up any labels at the end of the value */
+ for_each_marker_of_type(m, LABEL) {
+ assert (m->offset == val.len);
+ fprintf(f, " %s:", m->ref);
+ }
+ fprintf(f, ">");
+}
+
+static void write_propval_bytes(FILE *f, struct data val)
+{
+ void *propend = val.val + val.len;
+ const char *bp = val.val;
+ struct marker *m = val.markers;
+
+ fprintf(f, "[");
+ for (;;) {
+ while (m && (m->offset == (bp-val.val))) {
+ if (m->type == LABEL)
+ fprintf(f, "%s: ", m->ref);
+ m = m->next;
+ }
+
+ fprintf(f, "%02hhx", (unsigned char)(*bp++));
+ if ((const void *)bp >= propend)
+ break;
+ fprintf(f, " ");
+ }
+
+ /* Wrap up any labels at the end of the value */
+ for_each_marker_of_type(m, LABEL) {
+ assert (m->offset == val.len);
+ fprintf(f, " %s:", m->ref);
+ }
+ fprintf(f, "]");
+}
+
+static void write_propval(FILE *f, struct property *prop)
+{
+ int len = prop->val.len;
+ const char *p = prop->val.val;
+ struct marker *m = prop->val.markers;
+ int nnotstring = 0, nnul = 0;
+ int nnotstringlbl = 0, nnotcelllbl = 0;
+ int i;
+
+ if (len == 0) {
+ fprintf(f, ";\n");
+ return;
+ }
+
+ for (i = 0; i < len; i++) {
+ if (! isstring(p[i]))
+ nnotstring++;
+ if (p[i] == '\0')
+ nnul++;
+ }
+
+ for_each_marker_of_type(m, LABEL) {
+ if ((m->offset > 0) && (prop->val.val[m->offset - 1] != '\0'))
+ nnotstringlbl++;
+ if ((m->offset % sizeof(cell_t)) != 0)
+ nnotcelllbl++;
+ }
+
+ fprintf(f, " = ");
+ if ((p[len-1] == '\0') && (nnotstring == 0) && (nnul < (len-nnul))
+ && (nnotstringlbl == 0)) {
+ write_propval_string(f, prop->val);
+ } else if (((len % sizeof(cell_t)) == 0) && (nnotcelllbl == 0)) {
+ write_propval_cells(f, prop->val);
+ } else {
+ write_propval_bytes(f, prop->val);
+ }
+
+ fprintf(f, ";\n");
+}
+
+static void write_tree_source_node(FILE *f, struct node *tree, int level)
+{
+ struct property *prop;
+ struct node *child;
+ struct label *l;
+
+ write_prefix(f, level);
+ for_each_label(tree->labels, l)
+ fprintf(f, "%s: ", l->label);
+ if (tree->name && (*tree->name))
+ fprintf(f, "%s {\n", tree->name);
+ else
+ fprintf(f, "/ {\n");
+
+ for_each_property(tree, prop) {
+ write_prefix(f, level+1);
+ for_each_label(prop->labels, l)
+ fprintf(f, "%s: ", l->label);
+ fprintf(f, "%s", prop->name);
+ write_propval(f, prop);
+ }
+ for_each_child(tree, child) {
+ fprintf(f, "\n");
+ write_tree_source_node(f, child, level+1);
+ }
+ write_prefix(f, level);
+ fprintf(f, "};\n");
+}
+
+
+void dt_to_source(FILE *f, struct dt_info *dti)
+{
+ struct reserve_info *re;
+
+ fprintf(f, "/dts-v1/;\n\n");
+
+ for (re = dti->reservelist; re; re = re->next) {
+ struct label *l;
+
+ for_each_label(re->labels, l)
+ fprintf(f, "%s: ", l->label);
+ fprintf(f, "/memreserve/\t0x%016llx 0x%016llx;\n",
+ (unsigned long long)re->address,
+ (unsigned long long)re->size);
+ }
+
+ write_tree_source_node(f, dti->dt, 0);
+}
+
diff --git a/scripts/dtc/update-dtc-source.sh b/scripts/dtc/update-dtc-source.sh
new file mode 100755
index 0000000..1a009fd
--- /dev/null
+++ b/scripts/dtc/update-dtc-source.sh
@@ -0,0 +1,79 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+# Simple script to update the version of DTC carried by the Linux kernel
+#
+# This script assumes that the dtc and the linux git trees are in the
+# same directory. After building dtc in the dtc directory, it copies the
+# source files and generated source file(s) into the scripts/dtc directory
+# in the kernel and creates a git commit updating them to the new
+# version.
+#
+# Usage: from the top level Linux source tree, run:
+# $ ./scripts/dtc/update-dtc-source.sh
+#
+# The script will change into the dtc tree, build and test dtc, copy the
+# relevant files into the kernel tree and create a git commit. The commit
+# message will need to be modified to reflect the version of DTC being
+# imported
+#
+# TODO:
+# This script is pretty basic, but it is seldom used so a few manual tasks
+# aren't a big deal. If anyone is interested in making it more robust, the
+# the following would be nice:
+# * Actually fail to complete if any testcase fails.
+# - The dtc "make check" target needs to return a failure
+# * Extract the version number from the dtc repo for the commit message
+# * Build dtc in the kernel tree
+# * run 'make check" on dtc built from the kernel tree
+
+set -ev
+
+DTC_UPSTREAM_PATH=`pwd`/../dtc
+DTC_LINUX_PATH=`pwd`/scripts/dtc
+
+DTC_SOURCE="checks.c data.c dtc.c dtc.h flattree.c fstree.c livetree.c srcpos.c \
+ srcpos.h treesource.c util.c util.h version_gen.h Makefile.dtc \
+ dtc-lexer.l dtc-parser.y"
+LIBFDT_SOURCE="Makefile.libfdt fdt.c fdt.h fdt_addresses.c fdt_empty_tree.c \
+ fdt_overlay.c fdt_ro.c fdt_rw.c fdt_strerror.c fdt_sw.c \
+ fdt_wip.c libfdt.h libfdt_env.h libfdt_internal.h"
+
+get_last_dtc_version() {
+ git log --oneline scripts/dtc/ | grep 'upstream' | head -1 | sed -e 's/^.* \(.*\)/\1/'
+}
+
+last_dtc_ver=$(get_last_dtc_version)
+
+# Build DTC
+cd $DTC_UPSTREAM_PATH
+make clean
+make check
+dtc_version=$(git describe HEAD)
+dtc_log=$(git log --oneline ${last_dtc_ver}..)
+
+
+# Copy the files into the Linux tree
+cd $DTC_LINUX_PATH
+for f in $DTC_SOURCE; do
+ cp ${DTC_UPSTREAM_PATH}/${f} ${f}
+ git add ${f}
+done
+for f in $LIBFDT_SOURCE; do
+ cp ${DTC_UPSTREAM_PATH}/libfdt/${f} libfdt/${f}
+ git add libfdt/${f}
+done
+
+sed -i -- 's/#include <libfdt_env.h>/#include "libfdt_env.h"/g' ./libfdt/libfdt.h
+sed -i -- 's/#include <fdt.h>/#include "fdt.h"/g' ./libfdt/libfdt.h
+git add ./libfdt/libfdt.h
+
+commit_msg=$(cat << EOF
+scripts/dtc: Update to upstream version ${dtc_version}
+
+This adds the following commits from upstream:
+
+${dtc_log}
+EOF
+)
+
+git commit -e -v -s -m "${commit_msg}"
diff --git a/scripts/dtc/util.c b/scripts/dtc/util.c
new file mode 100644
index 0000000..9953c32
--- /dev/null
+++ b/scripts/dtc/util.c
@@ -0,0 +1,474 @@
+/*
+ * Copyright 2011 The Chromium Authors, All Rights Reserved.
+ * Copyright 2008 Jon Loeliger, Freescale Semiconductor, Inc.
+ *
+ * util_is_printable_string contributed by
+ * Pantelis Antoniou <pantelis.antoniou AT gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ * USA
+ */
+
+#include <ctype.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+#include <assert.h>
+
+#include <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#include "libfdt.h"
+#include "util.h"
+#include "version_gen.h"
+
+char *xstrdup(const char *s)
+{
+ int len = strlen(s) + 1;
+ char *d = xmalloc(len);
+
+ memcpy(d, s, len);
+
+ return d;
+}
+
+/* based in part from (3) vsnprintf */
+int xasprintf(char **strp, const char *fmt, ...)
+{
+ int n, size = 128; /* start with 128 bytes */
+ char *p;
+ va_list ap;
+
+ /* initial pointer is NULL making the fist realloc to be malloc */
+ p = NULL;
+ while (1) {
+ p = xrealloc(p, size);
+
+ /* Try to print in the allocated space. */
+ va_start(ap, fmt);
+ n = vsnprintf(p, size, fmt, ap);
+ va_end(ap);
+
+ /* If that worked, return the string. */
+ if (n > -1 && n < size)
+ break;
+ /* Else try again with more space. */
+ if (n > -1) /* glibc 2.1 */
+ size = n + 1; /* precisely what is needed */
+ else /* glibc 2.0 */
+ size *= 2; /* twice the old size */
+ }
+ *strp = p;
+ return strlen(p);
+}
+
+char *join_path(const char *path, const char *name)
+{
+ int lenp = strlen(path);
+ int lenn = strlen(name);
+ int len;
+ int needslash = 1;
+ char *str;
+
+ len = lenp + lenn + 2;
+ if ((lenp > 0) && (path[lenp-1] == '/')) {
+ needslash = 0;
+ len--;
+ }
+
+ str = xmalloc(len);
+ memcpy(str, path, lenp);
+ if (needslash) {
+ str[lenp] = '/';
+ lenp++;
+ }
+ memcpy(str+lenp, name, lenn+1);
+ return str;
+}
+
+bool util_is_printable_string(const void *data, int len)
+{
+ const char *s = data;
+ const char *ss, *se;
+
+ /* zero length is not */
+ if (len == 0)
+ return 0;
+
+ /* must terminate with zero */
+ if (s[len - 1] != '\0')
+ return 0;
+
+ se = s + len;
+
+ while (s < se) {
+ ss = s;
+ while (s < se && *s && isprint((unsigned char)*s))
+ s++;
+
+ /* not zero, or not done yet */
+ if (*s != '\0' || s == ss)
+ return 0;
+
+ s++;
+ }
+
+ return 1;
+}
+
+/*
+ * Parse a octal encoded character starting at index i in string s. The
+ * resulting character will be returned and the index i will be updated to
+ * point at the character directly after the end of the encoding, this may be
+ * the '\0' terminator of the string.
+ */
+static char get_oct_char(const char *s, int *i)
+{
+ char x[4];
+ char *endx;
+ long val;
+
+ x[3] = '\0';
+ strncpy(x, s + *i, 3);
+
+ val = strtol(x, &endx, 8);
+
+ assert(endx > x);
+
+ (*i) += endx - x;
+ return val;
+}
+
+/*
+ * Parse a hexadecimal encoded character starting at index i in string s. The
+ * resulting character will be returned and the index i will be updated to
+ * point at the character directly after the end of the encoding, this may be
+ * the '\0' terminator of the string.
+ */
+static char get_hex_char(const char *s, int *i)
+{
+ char x[3];
+ char *endx;
+ long val;
+
+ x[2] = '\0';
+ strncpy(x, s + *i, 2);
+
+ val = strtol(x, &endx, 16);
+ if (!(endx > x))
+ die("\\x used with no following hex digits\n");
+
+ (*i) += endx - x;
+ return val;
+}
+
+char get_escape_char(const char *s, int *i)
+{
+ char c = s[*i];
+ int j = *i + 1;
+ char val;
+
+ switch (c) {
+ case 'a':
+ val = '\a';
+ break;
+ case 'b':
+ val = '\b';
+ break;
+ case 't':
+ val = '\t';
+ break;
+ case 'n':
+ val = '\n';
+ break;
+ case 'v':
+ val = '\v';
+ break;
+ case 'f':
+ val = '\f';
+ break;
+ case 'r':
+ val = '\r';
+ break;
+ case '0':
+ case '1':
+ case '2':
+ case '3':
+ case '4':
+ case '5':
+ case '6':
+ case '7':
+ j--; /* need to re-read the first digit as
+ * part of the octal value */
+ val = get_oct_char(s, &j);
+ break;
+ case 'x':
+ val = get_hex_char(s, &j);
+ break;
+ default:
+ val = c;
+ }
+
+ (*i) = j;
+ return val;
+}
+
+int utilfdt_read_err_len(const char *filename, char **buffp, off_t *len)
+{
+ int fd = 0; /* assume stdin */
+ char *buf = NULL;
+ off_t bufsize = 1024, offset = 0;
+ int ret = 0;
+
+ *buffp = NULL;
+ if (strcmp(filename, "-") != 0) {
+ fd = open(filename, O_RDONLY);
+ if (fd < 0)
+ return errno;
+ }
+
+ /* Loop until we have read everything */
+ buf = xmalloc(bufsize);
+ do {
+ /* Expand the buffer to hold the next chunk */
+ if (offset == bufsize) {
+ bufsize *= 2;
+ buf = xrealloc(buf, bufsize);
+ }
+
+ ret = read(fd, &buf[offset], bufsize - offset);
+ if (ret < 0) {
+ ret = errno;
+ break;
+ }
+ offset += ret;
+ } while (ret != 0);
+
+ /* Clean up, including closing stdin; return errno on error */
+ close(fd);
+ if (ret)
+ free(buf);
+ else
+ *buffp = buf;
+ *len = bufsize;
+ return ret;
+}
+
+int utilfdt_read_err(const char *filename, char **buffp)
+{
+ off_t len;
+ return utilfdt_read_err_len(filename, buffp, &len);
+}
+
+char *utilfdt_read_len(const char *filename, off_t *len)
+{
+ char *buff;
+ int ret = utilfdt_read_err_len(filename, &buff, len);
+
+ if (ret) {
+ fprintf(stderr, "Couldn't open blob from '%s': %s\n", filename,
+ strerror(ret));
+ return NULL;
+ }
+ /* Successful read */
+ return buff;
+}
+
+char *utilfdt_read(const char *filename)
+{
+ off_t len;
+ return utilfdt_read_len(filename, &len);
+}
+
+int utilfdt_write_err(const char *filename, const void *blob)
+{
+ int fd = 1; /* assume stdout */
+ int totalsize;
+ int offset;
+ int ret = 0;
+ const char *ptr = blob;
+
+ if (strcmp(filename, "-") != 0) {
+ fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC, 0666);
+ if (fd < 0)
+ return errno;
+ }
+
+ totalsize = fdt_totalsize(blob);
+ offset = 0;
+
+ while (offset < totalsize) {
+ ret = write(fd, ptr + offset, totalsize - offset);
+ if (ret < 0) {
+ ret = -errno;
+ break;
+ }
+ offset += ret;
+ }
+ /* Close the file/stdin; return errno on error */
+ if (fd != 1)
+ close(fd);
+ return ret < 0 ? -ret : 0;
+}
+
+
+int utilfdt_write(const char *filename, const void *blob)
+{
+ int ret = utilfdt_write_err(filename, blob);
+
+ if (ret) {
+ fprintf(stderr, "Couldn't write blob to '%s': %s\n", filename,
+ strerror(ret));
+ }
+ return ret ? -1 : 0;
+}
+
+int utilfdt_decode_type(const char *fmt, int *type, int *size)
+{
+ int qualifier = 0;
+
+ if (!*fmt)
+ return -1;
+
+ /* get the conversion qualifier */
+ *size = -1;
+ if (strchr("hlLb", *fmt)) {
+ qualifier = *fmt++;
+ if (qualifier == *fmt) {
+ switch (*fmt++) {
+/* TODO: case 'l': qualifier = 'L'; break;*/
+ case 'h':
+ qualifier = 'b';
+ break;
+ }
+ }
+ }
+
+ /* we should now have a type */
+ if ((*fmt == '\0') || !strchr("iuxs", *fmt))
+ return -1;
+
+ /* convert qualifier (bhL) to byte size */
+ if (*fmt != 's')
+ *size = qualifier == 'b' ? 1 :
+ qualifier == 'h' ? 2 :
+ qualifier == 'l' ? 4 : -1;
+ *type = *fmt++;
+
+ /* that should be it! */
+ if (*fmt)
+ return -1;
+ return 0;
+}
+
+void utilfdt_print_data(const char *data, int len)
+{
+ int i;
+ const char *s;
+
+ /* no data, don't print */
+ if (len == 0)
+ return;
+
+ if (util_is_printable_string(data, len)) {
+ printf(" = ");
+
+ s = data;
+ do {
+ printf("\"%s\"", s);
+ s += strlen(s) + 1;
+ if (s < data + len)
+ printf(", ");
+ } while (s < data + len);
+
+ } else if ((len % 4) == 0) {
+ const fdt32_t *cell = (const fdt32_t *)data;
+
+ printf(" = <");
+ for (i = 0, len /= 4; i < len; i++)
+ printf("0x%08x%s", fdt32_to_cpu(cell[i]),
+ i < (len - 1) ? " " : "");
+ printf(">");
+ } else {
+ const unsigned char *p = (const unsigned char *)data;
+ printf(" = [");
+ for (i = 0; i < len; i++)
+ printf("%02x%s", *p++, i < len - 1 ? " " : "");
+ printf("]");
+ }
+}
+
+void NORETURN util_version(void)
+{
+ printf("Version: %s\n", DTC_VERSION);
+ exit(0);
+}
+
+void NORETURN util_usage(const char *errmsg, const char *synopsis,
+ const char *short_opts,
+ struct option const long_opts[],
+ const char * const opts_help[])
+{
+ FILE *fp = errmsg ? stderr : stdout;
+ const char a_arg[] = "<arg>";
+ size_t a_arg_len = strlen(a_arg) + 1;
+ size_t i;
+ int optlen;
+
+ fprintf(fp,
+ "Usage: %s\n"
+ "\n"
+ "Options: -[%s]\n", synopsis, short_opts);
+
+ /* prescan the --long opt length to auto-align */
+ optlen = 0;
+ for (i = 0; long_opts[i].name; ++i) {
+ /* +1 is for space between --opt and help text */
+ int l = strlen(long_opts[i].name) + 1;
+ if (long_opts[i].has_arg == a_argument)
+ l += a_arg_len;
+ if (optlen < l)
+ optlen = l;
+ }
+
+ for (i = 0; long_opts[i].name; ++i) {
+ /* helps when adding new applets or options */
+ assert(opts_help[i] != NULL);
+
+ /* first output the short flag if it has one */
+ if (long_opts[i].val > '~')
+ fprintf(fp, " ");
+ else
+ fprintf(fp, " -%c, ", long_opts[i].val);
+
+ /* then the long flag */
+ if (long_opts[i].has_arg == no_argument)
+ fprintf(fp, "--%-*s", optlen, long_opts[i].name);
+ else
+ fprintf(fp, "--%s %s%*s", long_opts[i].name, a_arg,
+ (int)(optlen - strlen(long_opts[i].name) - a_arg_len), "");
+
+ /* finally the help text */
+ fprintf(fp, "%s\n", opts_help[i]);
+ }
+
+ if (errmsg) {
+ fprintf(fp, "\nError: %s\n", errmsg);
+ exit(EXIT_FAILURE);
+ } else
+ exit(EXIT_SUCCESS);
+}
diff --git a/scripts/dtc/util.h b/scripts/dtc/util.h
new file mode 100644
index 0000000..66fba8e
--- /dev/null
+++ b/scripts/dtc/util.h
@@ -0,0 +1,266 @@
+#ifndef UTIL_H
+#define UTIL_H
+
+#include <stdarg.h>
+#include <stdbool.h>
+#include <getopt.h>
+
+/*
+ * Copyright 2011 The Chromium Authors, All Rights Reserved.
+ * Copyright 2008 Jon Loeliger, Freescale Semiconductor, Inc.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ * USA
+ */
+
+#ifdef __GNUC__
+#define PRINTF(i, j) __attribute__((format (printf, i, j)))
+#define NORETURN __attribute__((noreturn))
+#else
+#define PRINTF(i, j)
+#define NORETURN
+#endif
+
+#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
+
+#define stringify(s) stringify_(s)
+#define stringify_(s) #s
+
+static inline void NORETURN PRINTF(1, 2) die(const char *str, ...)
+{
+ va_list ap;
+
+ va_start(ap, str);
+ fprintf(stderr, "FATAL ERROR: ");
+ vfprintf(stderr, str, ap);
+ va_end(ap);
+ exit(1);
+}
+
+static inline void *xmalloc(size_t len)
+{
+ void *new = malloc(len);
+
+ if (!new)
+ die("malloc() failed\n");
+
+ return new;
+}
+
+static inline void *xrealloc(void *p, size_t len)
+{
+ void *new = realloc(p, len);
+
+ if (!new)
+ die("realloc() failed (len=%zd)\n", len);
+
+ return new;
+}
+
+extern char *xstrdup(const char *s);
+
+extern int PRINTF(2, 3) xasprintf(char **strp, const char *fmt, ...);
+extern char *join_path(const char *path, const char *name);
+
+/**
+ * Check a property of a given length to see if it is all printable and
+ * has a valid terminator. The property can contain either a single string,
+ * or multiple strings each of non-zero length.
+ *
+ * @param data The string to check
+ * @param len The string length including terminator
+ * @return 1 if a valid printable string, 0 if not
+ */
+bool util_is_printable_string(const void *data, int len);
+
+/*
+ * Parse an escaped character starting at index i in string s. The resulting
+ * character will be returned and the index i will be updated to point at the
+ * character directly after the end of the encoding, this may be the '\0'
+ * terminator of the string.
+ */
+char get_escape_char(const char *s, int *i);
+
+/**
+ * Read a device tree file into a buffer. This will report any errors on
+ * stderr.
+ *
+ * @param filename The filename to read, or - for stdin
+ * @return Pointer to allocated buffer containing fdt, or NULL on error
+ */
+char *utilfdt_read(const char *filename);
+
+/**
+ * Like utilfdt_read(), but also passes back the size of the file read.
+ *
+ * @param len If non-NULL, the amount of data we managed to read
+ */
+char *utilfdt_read_len(const char *filename, off_t *len);
+
+/**
+ * Read a device tree file into a buffer. Does not report errors, but only
+ * returns them. The value returned can be passed to strerror() to obtain
+ * an error message for the user.
+ *
+ * @param filename The filename to read, or - for stdin
+ * @param buffp Returns pointer to buffer containing fdt
+ * @return 0 if ok, else an errno value representing the error
+ */
+int utilfdt_read_err(const char *filename, char **buffp);
+
+/**
+ * Like utilfdt_read_err(), but also passes back the size of the file read.
+ *
+ * @param len If non-NULL, the amount of data we managed to read
+ */
+int utilfdt_read_err_len(const char *filename, char **buffp, off_t *len);
+
+/**
+ * Write a device tree buffer to a file. This will report any errors on
+ * stderr.
+ *
+ * @param filename The filename to write, or - for stdout
+ * @param blob Poiner to buffer containing fdt
+ * @return 0 if ok, -1 on error
+ */
+int utilfdt_write(const char *filename, const void *blob);
+
+/**
+ * Write a device tree buffer to a file. Does not report errors, but only
+ * returns them. The value returned can be passed to strerror() to obtain
+ * an error message for the user.
+ *
+ * @param filename The filename to write, or - for stdout
+ * @param blob Poiner to buffer containing fdt
+ * @return 0 if ok, else an errno value representing the error
+ */
+int utilfdt_write_err(const char *filename, const void *blob);
+
+/**
+ * Decode a data type string. The purpose of this string
+ *
+ * The string consists of an optional character followed by the type:
+ * Modifier characters:
+ * hh or b 1 byte
+ * h 2 byte
+ * l 4 byte, default
+ *
+ * Type character:
+ * s string
+ * i signed integer
+ * u unsigned integer
+ * x hex
+ *
+ * TODO: Implement ll modifier (8 bytes)
+ * TODO: Implement o type (octal)
+ *
+ * @param fmt Format string to process
+ * @param type Returns type found(s/d/u/x), or 0 if none
+ * @param size Returns size found(1,2,4,8) or 4 if none
+ * @return 0 if ok, -1 on error (no type given, or other invalid format)
+ */
+int utilfdt_decode_type(const char *fmt, int *type, int *size);
+
+/*
+ * This is a usage message fragment for the -t option. It is the format
+ * supported by utilfdt_decode_type.
+ */
+
+#define USAGE_TYPE_MSG \
+ "<type>\ts=string, i=int, u=unsigned, x=hex\n" \
+ "\tOptional modifier prefix:\n" \
+ "\t\thh or b=byte, h=2 byte, l=4 byte (default)";
+
+/**
+ * Print property data in a readable format to stdout
+ *
+ * Properties that look like strings will be printed as strings. Otherwise
+ * the data will be displayed either as cells (if len is a multiple of 4
+ * bytes) or bytes.
+ *
+ * If len is 0 then this function does nothing.
+ *
+ * @param data Pointers to property data
+ * @param len Length of property data
+ */
+void utilfdt_print_data(const char *data, int len);
+
+/**
+ * Show source version and exit
+ */
+void NORETURN util_version(void);
+
+/**
+ * Show usage and exit
+ *
+ * This helps standardize the output of various utils. You most likely want
+ * to use the usage() helper below rather than call this.
+ *
+ * @param errmsg If non-NULL, an error message to display
+ * @param synopsis The initial example usage text (and possible examples)
+ * @param short_opts The string of short options
+ * @param long_opts The structure of long options
+ * @param opts_help An array of help strings (should align with long_opts)
+ */
+void NORETURN util_usage(const char *errmsg, const char *synopsis,
+ const char *short_opts,
+ struct option const long_opts[],
+ const char * const opts_help[]);
+
+/**
+ * Show usage and exit
+ *
+ * If you name all your usage variables with usage_xxx, then you can call this
+ * help macro rather than expanding all arguments yourself.
+ *
+ * @param errmsg If non-NULL, an error message to display
+ */
+#define usage(errmsg) \
+ util_usage(errmsg, usage_synopsis, usage_short_opts, \
+ usage_long_opts, usage_opts_help)
+
+/**
+ * Call getopt_long() with standard options
+ *
+ * Since all util code runs getopt in the same way, provide a helper.
+ */
+#define util_getopt_long() getopt_long(argc, argv, usage_short_opts, \
+ usage_long_opts, NULL)
+
+/* Helper for aligning long_opts array */
+#define a_argument required_argument
+
+/* Helper for usage_short_opts string constant */
+#define USAGE_COMMON_SHORT_OPTS "hV"
+
+/* Helper for usage_long_opts option array */
+#define USAGE_COMMON_LONG_OPTS \
+ {"help", no_argument, NULL, 'h'}, \
+ {"version", no_argument, NULL, 'V'}, \
+ {NULL, no_argument, NULL, 0x0}
+
+/* Helper for usage_opts_help array */
+#define USAGE_COMMON_OPTS_HELP \
+ "Print this help and exit", \
+ "Print version and exit", \
+ NULL
+
+/* Helper for getopt case statements */
+#define case_USAGE_COMMON_FLAGS \
+ case 'h': usage(NULL); \
+ case 'V': util_version(); \
+ case '?': usage("unknown option");
+
+#endif /* UTIL_H */
diff --git a/scripts/dtc/version_gen.h b/scripts/dtc/version_gen.h
new file mode 100644
index 0000000..b00f14f
--- /dev/null
+++ b/scripts/dtc/version_gen.h
@@ -0,0 +1 @@
+#define DTC_VERSION "DTC 1.4.6-g84e414b0"