Update Linux to v5.10.109
Sourced from [1]
[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.10.109.tar.xz
Change-Id: I19bca9fc6762d4e63bcf3e4cba88bbe560d9c76c
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/tools/bootconfig/.gitignore b/tools/bootconfig/.gitignore
new file mode 100644
index 0000000..b77513c
--- /dev/null
+++ b/tools/bootconfig/.gitignore
@@ -0,0 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0-only
+bootconfig
diff --git a/tools/bootconfig/Makefile b/tools/bootconfig/Makefile
new file mode 100644
index 0000000..da59757
--- /dev/null
+++ b/tools/bootconfig/Makefile
@@ -0,0 +1,30 @@
+# SPDX-License-Identifier: GPL-2.0
+# Makefile for bootconfig command
+include ../scripts/Makefile.include
+
+bindir ?= /usr/bin
+
+ifeq ($(srctree),)
+srctree := $(patsubst %/,%,$(dir $(CURDIR)))
+srctree := $(patsubst %/,%,$(dir $(srctree)))
+endif
+
+LIBSRC = $(srctree)/lib/bootconfig.c $(srctree)/include/linux/bootconfig.h
+CFLAGS = -Wall -g -I$(CURDIR)/include
+
+ALL_TARGETS := bootconfig
+ALL_PROGRAMS := $(patsubst %,$(OUTPUT)%,$(ALL_TARGETS))
+
+all: $(ALL_PROGRAMS)
+
+$(OUTPUT)bootconfig: main.c $(LIBSRC)
+ $(CC) $(filter %.c,$^) $(CFLAGS) -o $@
+
+test: $(ALL_PROGRAMS) test-bootconfig.sh
+ ./test-bootconfig.sh $(OUTPUT)
+
+install: $(ALL_PROGRAMS)
+ install $(OUTPUT)bootconfig $(DESTDIR)$(bindir)
+
+clean:
+ $(RM) -f $(OUTPUT)*.o $(ALL_PROGRAMS)
diff --git a/tools/bootconfig/include/linux/bootconfig.h b/tools/bootconfig/include/linux/bootconfig.h
new file mode 100644
index 0000000..078cbd2
--- /dev/null
+++ b/tools/bootconfig/include/linux/bootconfig.h
@@ -0,0 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _BOOTCONFIG_LINUX_BOOTCONFIG_H
+#define _BOOTCONFIG_LINUX_BOOTCONFIG_H
+
+#include "../../../../include/linux/bootconfig.h"
+
+#endif
diff --git a/tools/bootconfig/include/linux/bug.h b/tools/bootconfig/include/linux/bug.h
new file mode 100644
index 0000000..7b65a38
--- /dev/null
+++ b/tools/bootconfig/include/linux/bug.h
@@ -0,0 +1,12 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _SKC_LINUX_BUG_H
+#define _SKC_LINUX_BUG_H
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#define WARN_ON(cond) \
+ ((cond) ? printf("Internal warning(%s:%d, %s): %s\n", \
+ __FILE__, __LINE__, __func__, #cond) : 0)
+
+#endif
diff --git a/tools/bootconfig/include/linux/ctype.h b/tools/bootconfig/include/linux/ctype.h
new file mode 100644
index 0000000..c56ecc1
--- /dev/null
+++ b/tools/bootconfig/include/linux/ctype.h
@@ -0,0 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _SKC_LINUX_CTYPE_H
+#define _SKC_LINUX_CTYPE_H
+
+#include <ctype.h>
+
+#endif
diff --git a/tools/bootconfig/include/linux/errno.h b/tools/bootconfig/include/linux/errno.h
new file mode 100644
index 0000000..5d9f91e
--- /dev/null
+++ b/tools/bootconfig/include/linux/errno.h
@@ -0,0 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _SKC_LINUX_ERRNO_H
+#define _SKC_LINUX_ERRNO_H
+
+#include <asm/errno.h>
+
+#endif
diff --git a/tools/bootconfig/include/linux/kernel.h b/tools/bootconfig/include/linux/kernel.h
new file mode 100644
index 0000000..2d93320
--- /dev/null
+++ b/tools/bootconfig/include/linux/kernel.h
@@ -0,0 +1,18 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _SKC_LINUX_KERNEL_H
+#define _SKC_LINUX_KERNEL_H
+
+#include <stdlib.h>
+#include <stdbool.h>
+
+#include <linux/printk.h>
+
+typedef unsigned short u16;
+typedef unsigned int u32;
+
+#define unlikely(cond) (cond)
+
+#define __init
+#define __initdata
+
+#endif
diff --git a/tools/bootconfig/include/linux/memblock.h b/tools/bootconfig/include/linux/memblock.h
new file mode 100644
index 0000000..7862f21
--- /dev/null
+++ b/tools/bootconfig/include/linux/memblock.h
@@ -0,0 +1,12 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _XBC_LINUX_MEMBLOCK_H
+#define _XBC_LINUX_MEMBLOCK_H
+
+#include <stdlib.h>
+
+#define __pa(addr) (addr)
+#define SMP_CACHE_BYTES 0
+#define memblock_alloc(size, align) malloc(size)
+#define memblock_free(paddr, size) free(paddr)
+
+#endif
diff --git a/tools/bootconfig/include/linux/printk.h b/tools/bootconfig/include/linux/printk.h
new file mode 100644
index 0000000..036e667
--- /dev/null
+++ b/tools/bootconfig/include/linux/printk.h
@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _SKC_LINUX_PRINTK_H
+#define _SKC_LINUX_PRINTK_H
+
+#include <stdio.h>
+
+#define printk(fmt, ...) printf(fmt, ##__VA_ARGS__)
+
+#define pr_err printk
+#define pr_warn printk
+#define pr_info printk
+#define pr_debug printk
+
+#endif
diff --git a/tools/bootconfig/include/linux/string.h b/tools/bootconfig/include/linux/string.h
new file mode 100644
index 0000000..8267af7
--- /dev/null
+++ b/tools/bootconfig/include/linux/string.h
@@ -0,0 +1,32 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _SKC_LINUX_STRING_H
+#define _SKC_LINUX_STRING_H
+
+#include <string.h>
+
+/* Copied from lib/string.c */
+static inline char *skip_spaces(const char *str)
+{
+ while (isspace(*str))
+ ++str;
+ return (char *)str;
+}
+
+static inline char *strim(char *s)
+{
+ size_t size;
+ char *end;
+
+ size = strlen(s);
+ if (!size)
+ return s;
+
+ end = s + size - 1;
+ while (end >= s && isspace(*end))
+ end--;
+ *(end + 1) = '\0';
+
+ return skip_spaces(s);
+}
+
+#endif
diff --git a/tools/bootconfig/main.c b/tools/bootconfig/main.c
new file mode 100644
index 0000000..6cd6080
--- /dev/null
+++ b/tools/bootconfig/main.c
@@ -0,0 +1,508 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Boot config tool for initrd image
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+#include <endian.h>
+
+#include <linux/kernel.h>
+#include <linux/bootconfig.h>
+
+static int xbc_show_value(struct xbc_node *node, bool semicolon)
+{
+ const char *val, *eol;
+ char q;
+ int i = 0;
+
+ eol = semicolon ? ";\n" : "\n";
+ xbc_array_for_each_value(node, val) {
+ if (strchr(val, '"'))
+ q = '\'';
+ else
+ q = '"';
+ printf("%c%s%c%s", q, val, q, node->next ? ", " : eol);
+ i++;
+ }
+ return i;
+}
+
+static void xbc_show_compact_tree(void)
+{
+ struct xbc_node *node, *cnode;
+ int depth = 0, i;
+
+ node = xbc_root_node();
+ while (node && xbc_node_is_key(node)) {
+ for (i = 0; i < depth; i++)
+ printf("\t");
+ cnode = xbc_node_get_child(node);
+ while (cnode && xbc_node_is_key(cnode) && !cnode->next) {
+ printf("%s.", xbc_node_get_data(node));
+ node = cnode;
+ cnode = xbc_node_get_child(node);
+ }
+ if (cnode && xbc_node_is_key(cnode)) {
+ printf("%s {\n", xbc_node_get_data(node));
+ depth++;
+ node = cnode;
+ continue;
+ } else if (cnode && xbc_node_is_value(cnode)) {
+ printf("%s = ", xbc_node_get_data(node));
+ xbc_show_value(cnode, true);
+ } else {
+ printf("%s;\n", xbc_node_get_data(node));
+ }
+
+ if (node->next) {
+ node = xbc_node_get_next(node);
+ continue;
+ }
+ while (!node->next) {
+ node = xbc_node_get_parent(node);
+ if (!node)
+ return;
+ if (!xbc_node_get_child(node)->next)
+ continue;
+ depth--;
+ for (i = 0; i < depth; i++)
+ printf("\t");
+ printf("}\n");
+ }
+ node = xbc_node_get_next(node);
+ }
+}
+
+static void xbc_show_list(void)
+{
+ char key[XBC_KEYLEN_MAX];
+ struct xbc_node *leaf;
+ const char *val;
+ int ret = 0;
+
+ xbc_for_each_key_value(leaf, val) {
+ ret = xbc_node_compose_key(leaf, key, XBC_KEYLEN_MAX);
+ if (ret < 0)
+ break;
+ printf("%s = ", key);
+ if (!val || val[0] == '\0') {
+ printf("\"\"\n");
+ continue;
+ }
+ xbc_show_value(xbc_node_get_child(leaf), false);
+ }
+}
+
+/* Simple real checksum */
+static int checksum(unsigned char *buf, int len)
+{
+ int i, sum = 0;
+
+ for (i = 0; i < len; i++)
+ sum += buf[i];
+
+ return sum;
+}
+
+#define PAGE_SIZE 4096
+
+static int load_xbc_fd(int fd, char **buf, int size)
+{
+ int ret;
+
+ *buf = malloc(size + 1);
+ if (!*buf)
+ return -ENOMEM;
+
+ ret = read(fd, *buf, size);
+ if (ret < 0)
+ return -errno;
+ (*buf)[size] = '\0';
+
+ return ret;
+}
+
+/* Return the read size or -errno */
+static int load_xbc_file(const char *path, char **buf)
+{
+ struct stat stat;
+ int fd, ret;
+
+ fd = open(path, O_RDONLY);
+ if (fd < 0)
+ return -errno;
+ ret = fstat(fd, &stat);
+ if (ret < 0)
+ return -errno;
+
+ ret = load_xbc_fd(fd, buf, stat.st_size);
+
+ close(fd);
+
+ return ret;
+}
+
+static int pr_errno(const char *msg, int err)
+{
+ pr_err("%s: %d\n", msg, err);
+ return err;
+}
+
+static int load_xbc_from_initrd(int fd, char **buf)
+{
+ struct stat stat;
+ int ret;
+ u32 size = 0, csum = 0, rcsum;
+ char magic[BOOTCONFIG_MAGIC_LEN];
+ const char *msg;
+
+ ret = fstat(fd, &stat);
+ if (ret < 0)
+ return -errno;
+
+ if (stat.st_size < 8 + BOOTCONFIG_MAGIC_LEN)
+ return 0;
+
+ if (lseek(fd, -BOOTCONFIG_MAGIC_LEN, SEEK_END) < 0)
+ return pr_errno("Failed to lseek for magic", -errno);
+
+ if (read(fd, magic, BOOTCONFIG_MAGIC_LEN) < 0)
+ return pr_errno("Failed to read", -errno);
+
+ /* Check the bootconfig magic bytes */
+ if (memcmp(magic, BOOTCONFIG_MAGIC, BOOTCONFIG_MAGIC_LEN) != 0)
+ return 0;
+
+ if (lseek(fd, -(8 + BOOTCONFIG_MAGIC_LEN), SEEK_END) < 0)
+ return pr_errno("Failed to lseek for size", -errno);
+
+ if (read(fd, &size, sizeof(u32)) < 0)
+ return pr_errno("Failed to read size", -errno);
+ size = le32toh(size);
+
+ if (read(fd, &csum, sizeof(u32)) < 0)
+ return pr_errno("Failed to read checksum", -errno);
+ csum = le32toh(csum);
+
+ /* Wrong size error */
+ if (stat.st_size < size + 8 + BOOTCONFIG_MAGIC_LEN) {
+ pr_err("bootconfig size is too big\n");
+ return -E2BIG;
+ }
+
+ if (lseek(fd, stat.st_size - (size + 8 + BOOTCONFIG_MAGIC_LEN),
+ SEEK_SET) < 0)
+ return pr_errno("Failed to lseek", -errno);
+
+ ret = load_xbc_fd(fd, buf, size);
+ if (ret < 0)
+ return ret;
+
+ /* Wrong Checksum */
+ rcsum = checksum((unsigned char *)*buf, size);
+ if (csum != rcsum) {
+ pr_err("checksum error: %d != %d\n", csum, rcsum);
+ return -EINVAL;
+ }
+
+ ret = xbc_init(*buf, &msg, NULL);
+ /* Wrong data */
+ if (ret < 0) {
+ pr_err("parse error: %s.\n", msg);
+ return ret;
+ }
+
+ return size;
+}
+
+static void show_xbc_error(const char *data, const char *msg, int pos)
+{
+ int lin = 1, col, i;
+
+ if (pos < 0) {
+ pr_err("Error: %s.\n", msg);
+ return;
+ }
+
+ /* Note that pos starts from 0 but lin and col should start from 1. */
+ col = pos + 1;
+ for (i = 0; i < pos; i++) {
+ if (data[i] == '\n') {
+ lin++;
+ col = pos - i;
+ }
+ }
+ pr_err("Parse Error: %s at %d:%d\n", msg, lin, col);
+
+}
+
+static int init_xbc_with_error(char *buf, int len)
+{
+ char *copy = strdup(buf);
+ const char *msg;
+ int ret, pos;
+
+ if (!copy)
+ return -ENOMEM;
+
+ ret = xbc_init(buf, &msg, &pos);
+ if (ret < 0)
+ show_xbc_error(copy, msg, pos);
+ free(copy);
+
+ return ret;
+}
+
+static int show_xbc(const char *path, bool list)
+{
+ int ret, fd;
+ char *buf = NULL;
+ struct stat st;
+
+ ret = stat(path, &st);
+ if (ret < 0) {
+ ret = -errno;
+ pr_err("Failed to stat %s: %d\n", path, ret);
+ return ret;
+ }
+
+ fd = open(path, O_RDONLY);
+ if (fd < 0) {
+ ret = -errno;
+ pr_err("Failed to open initrd %s: %d\n", path, ret);
+ return ret;
+ }
+
+ ret = load_xbc_from_initrd(fd, &buf);
+ close(fd);
+ if (ret < 0) {
+ pr_err("Failed to load a boot config from initrd: %d\n", ret);
+ goto out;
+ }
+ /* Assume a bootconfig file if it is enough small */
+ if (ret == 0 && st.st_size <= XBC_DATA_MAX) {
+ ret = load_xbc_file(path, &buf);
+ if (ret < 0) {
+ pr_err("Failed to load a boot config: %d\n", ret);
+ goto out;
+ }
+ if (init_xbc_with_error(buf, ret) < 0)
+ goto out;
+ }
+ if (list)
+ xbc_show_list();
+ else
+ xbc_show_compact_tree();
+ ret = 0;
+out:
+ free(buf);
+
+ return ret;
+}
+
+static int delete_xbc(const char *path)
+{
+ struct stat stat;
+ int ret = 0, fd, size;
+ char *buf = NULL;
+
+ fd = open(path, O_RDWR);
+ if (fd < 0) {
+ ret = -errno;
+ pr_err("Failed to open initrd %s: %d\n", path, ret);
+ return ret;
+ }
+
+ size = load_xbc_from_initrd(fd, &buf);
+ if (size < 0) {
+ ret = size;
+ pr_err("Failed to load a boot config from initrd: %d\n", ret);
+ } else if (size > 0) {
+ ret = fstat(fd, &stat);
+ if (!ret)
+ ret = ftruncate(fd, stat.st_size
+ - size - 8 - BOOTCONFIG_MAGIC_LEN);
+ if (ret)
+ ret = -errno;
+ } /* Ignore if there is no boot config in initrd */
+
+ close(fd);
+ free(buf);
+
+ return ret;
+}
+
+static int apply_xbc(const char *path, const char *xbc_path)
+{
+ char *buf, *data, *p;
+ size_t total_size;
+ struct stat stat;
+ const char *msg;
+ u32 size, csum;
+ int pos, pad;
+ int ret, fd;
+
+ ret = load_xbc_file(xbc_path, &buf);
+ if (ret < 0) {
+ pr_err("Failed to load %s : %d\n", xbc_path, ret);
+ return ret;
+ }
+ size = strlen(buf) + 1;
+ csum = checksum((unsigned char *)buf, size);
+
+ /* Backup the bootconfig data */
+ data = calloc(size + BOOTCONFIG_ALIGN +
+ sizeof(u32) + sizeof(u32) + BOOTCONFIG_MAGIC_LEN, 1);
+ if (!data)
+ return -ENOMEM;
+ memcpy(data, buf, size);
+
+ /* Check the data format */
+ ret = xbc_init(buf, &msg, &pos);
+ if (ret < 0) {
+ show_xbc_error(data, msg, pos);
+ free(data);
+ free(buf);
+
+ return ret;
+ }
+ printf("Apply %s to %s\n", xbc_path, path);
+ printf("\tNumber of nodes: %d\n", ret);
+ printf("\tSize: %u bytes\n", (unsigned int)size);
+ printf("\tChecksum: %d\n", (unsigned int)csum);
+
+ /* TODO: Check the options by schema */
+ xbc_destroy_all();
+ free(buf);
+
+ /* Remove old boot config if exists */
+ ret = delete_xbc(path);
+ if (ret < 0) {
+ pr_err("Failed to delete previous boot config: %d\n", ret);
+ free(data);
+ return ret;
+ }
+
+ /* Apply new one */
+ fd = open(path, O_RDWR | O_APPEND);
+ if (fd < 0) {
+ ret = -errno;
+ pr_err("Failed to open %s: %d\n", path, ret);
+ free(data);
+ return ret;
+ }
+ /* TODO: Ensure the @path is initramfs/initrd image */
+ if (fstat(fd, &stat) < 0) {
+ ret = -errno;
+ pr_err("Failed to get the size of %s\n", path);
+ goto out;
+ }
+
+ /* To align up the total size to BOOTCONFIG_ALIGN, get padding size */
+ total_size = stat.st_size + size + sizeof(u32) * 2 + BOOTCONFIG_MAGIC_LEN;
+ pad = ((total_size + BOOTCONFIG_ALIGN - 1) & (~BOOTCONFIG_ALIGN_MASK)) - total_size;
+ size += pad;
+
+ /* Add a footer */
+ p = data + size;
+ *(u32 *)p = htole32(size);
+ p += sizeof(u32);
+
+ *(u32 *)p = htole32(csum);
+ p += sizeof(u32);
+
+ memcpy(p, BOOTCONFIG_MAGIC, BOOTCONFIG_MAGIC_LEN);
+ p += BOOTCONFIG_MAGIC_LEN;
+
+ total_size = p - data;
+
+ ret = write(fd, data, total_size);
+ if (ret < total_size) {
+ if (ret < 0)
+ ret = -errno;
+ pr_err("Failed to apply a boot config: %d\n", ret);
+ if (ret >= 0)
+ goto out_rollback;
+ } else
+ ret = 0;
+
+out:
+ close(fd);
+ free(data);
+
+ return ret;
+
+out_rollback:
+ /* Map the partial write to -ENOSPC */
+ if (ret >= 0)
+ ret = -ENOSPC;
+ if (ftruncate(fd, stat.st_size) < 0) {
+ ret = -errno;
+ pr_err("Failed to rollback the write error: %d\n", ret);
+ pr_err("The initrd %s may be corrupted. Recommend to rebuild.\n", path);
+ }
+ goto out;
+}
+
+static int usage(void)
+{
+ printf("Usage: bootconfig [OPTIONS] <INITRD>\n"
+ "Or bootconfig <CONFIG>\n"
+ " Apply, delete or show boot config to initrd.\n"
+ " Options:\n"
+ " -a <config>: Apply boot config to initrd\n"
+ " -d : Delete boot config file from initrd\n"
+ " -l : list boot config in initrd or file\n\n"
+ " If no option is given, show the bootconfig in the given file.\n");
+ return -1;
+}
+
+int main(int argc, char **argv)
+{
+ char *path = NULL;
+ char *apply = NULL;
+ bool delete = false, list = false;
+ int opt;
+
+ while ((opt = getopt(argc, argv, "hda:l")) != -1) {
+ switch (opt) {
+ case 'd':
+ delete = true;
+ break;
+ case 'a':
+ apply = optarg;
+ break;
+ case 'l':
+ list = true;
+ break;
+ case 'h':
+ default:
+ return usage();
+ }
+ }
+
+ if ((apply && delete) || (delete && list) || (apply && list)) {
+ pr_err("Error: You can give one of -a, -d or -l at once.\n");
+ return usage();
+ }
+
+ if (optind >= argc) {
+ pr_err("Error: No initrd is specified.\n");
+ return usage();
+ }
+
+ path = argv[optind];
+
+ if (apply)
+ return apply_xbc(path, apply);
+ else if (delete)
+ return delete_xbc(path);
+
+ return show_xbc(path, list);
+}
diff --git a/tools/bootconfig/samples/bad-array-space-comment.bconf b/tools/bootconfig/samples/bad-array-space-comment.bconf
new file mode 100644
index 0000000..fda19e4
--- /dev/null
+++ b/tools/bootconfig/samples/bad-array-space-comment.bconf
@@ -0,0 +1,5 @@
+key = # comment
+ "value1", # comment1
+ "value2" # comment2
+,
+ "value3"
diff --git a/tools/bootconfig/samples/bad-array.bconf b/tools/bootconfig/samples/bad-array.bconf
new file mode 100644
index 0000000..0174af0
--- /dev/null
+++ b/tools/bootconfig/samples/bad-array.bconf
@@ -0,0 +1,2 @@
+# Array must be comma separated.
+key = "value1" "value2"
diff --git a/tools/bootconfig/samples/bad-dotword.bconf b/tools/bootconfig/samples/bad-dotword.bconf
new file mode 100644
index 0000000..ba5557b
--- /dev/null
+++ b/tools/bootconfig/samples/bad-dotword.bconf
@@ -0,0 +1,4 @@
+# do not start keyword with .
+key {
+ .word = 1
+}
diff --git a/tools/bootconfig/samples/bad-empty.bconf b/tools/bootconfig/samples/bad-empty.bconf
new file mode 100644
index 0000000..2ba3f6c
--- /dev/null
+++ b/tools/bootconfig/samples/bad-empty.bconf
@@ -0,0 +1 @@
+# Wrong boot config: comment only
diff --git a/tools/bootconfig/samples/bad-keyerror.bconf b/tools/bootconfig/samples/bad-keyerror.bconf
new file mode 100644
index 0000000..b6e247a
--- /dev/null
+++ b/tools/bootconfig/samples/bad-keyerror.bconf
@@ -0,0 +1,2 @@
+# key word can not contain ","
+key,word
diff --git a/tools/bootconfig/samples/bad-longkey.bconf b/tools/bootconfig/samples/bad-longkey.bconf
new file mode 100644
index 0000000..eb97369
--- /dev/null
+++ b/tools/bootconfig/samples/bad-longkey.bconf
@@ -0,0 +1 @@
+key_word_is_too_long01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345
diff --git a/tools/bootconfig/samples/bad-manywords.bconf b/tools/bootconfig/samples/bad-manywords.bconf
new file mode 100644
index 0000000..8db8196
--- /dev/null
+++ b/tools/bootconfig/samples/bad-manywords.bconf
@@ -0,0 +1 @@
+key1.is2.too3.long4.5.6.7.8.9.10.11.12.13.14.15.16.17
diff --git a/tools/bootconfig/samples/bad-mixed-kv1.bconf b/tools/bootconfig/samples/bad-mixed-kv1.bconf
new file mode 100644
index 0000000..1761547
--- /dev/null
+++ b/tools/bootconfig/samples/bad-mixed-kv1.bconf
@@ -0,0 +1,3 @@
+# value -> subkey pattern
+key = value
+key.subkey = another-value
diff --git a/tools/bootconfig/samples/bad-mixed-kv2.bconf b/tools/bootconfig/samples/bad-mixed-kv2.bconf
new file mode 100644
index 0000000..6b32e0c
--- /dev/null
+++ b/tools/bootconfig/samples/bad-mixed-kv2.bconf
@@ -0,0 +1,3 @@
+# subkey -> value pattern
+key.subkey = value
+key = another-value
diff --git a/tools/bootconfig/samples/bad-no-keyword.bconf b/tools/bootconfig/samples/bad-no-keyword.bconf
new file mode 100644
index 0000000..eff2680
--- /dev/null
+++ b/tools/bootconfig/samples/bad-no-keyword.bconf
@@ -0,0 +1,2 @@
+# No keyword
+{}
diff --git a/tools/bootconfig/samples/bad-nonprintable.bconf b/tools/bootconfig/samples/bad-nonprintable.bconf
new file mode 100644
index 0000000..3bb1a28
--- /dev/null
+++ b/tools/bootconfig/samples/bad-nonprintable.bconf
@@ -0,0 +1,2 @@
+# Non printable
+key = ""
diff --git a/tools/bootconfig/samples/bad-override.bconf b/tools/bootconfig/samples/bad-override.bconf
new file mode 100644
index 0000000..fde6c56
--- /dev/null
+++ b/tools/bootconfig/samples/bad-override.bconf
@@ -0,0 +1,3 @@
+key.subkey = value
+# We can not override pre-defined subkeys with value
+key := value
diff --git a/tools/bootconfig/samples/bad-override2.bconf b/tools/bootconfig/samples/bad-override2.bconf
new file mode 100644
index 0000000..688587c
--- /dev/null
+++ b/tools/bootconfig/samples/bad-override2.bconf
@@ -0,0 +1,3 @@
+key = value
+# We can not override pre-defined value with subkey
+key.subkey := value
diff --git a/tools/bootconfig/samples/bad-samekey.bconf b/tools/bootconfig/samples/bad-samekey.bconf
new file mode 100644
index 0000000..e8d983a
--- /dev/null
+++ b/tools/bootconfig/samples/bad-samekey.bconf
@@ -0,0 +1,6 @@
+# Same key value is not allowed
+key {
+ foo = value
+ bar = value2
+}
+key.foo = value
diff --git a/tools/bootconfig/samples/bad-spaceword.bconf b/tools/bootconfig/samples/bad-spaceword.bconf
new file mode 100644
index 0000000..90c703d
--- /dev/null
+++ b/tools/bootconfig/samples/bad-spaceword.bconf
@@ -0,0 +1,2 @@
+# No space between words
+key . word
diff --git a/tools/bootconfig/samples/bad-tree.bconf b/tools/bootconfig/samples/bad-tree.bconf
new file mode 100644
index 0000000..5a6038e
--- /dev/null
+++ b/tools/bootconfig/samples/bad-tree.bconf
@@ -0,0 +1,5 @@
+# brace is not closing
+tree {
+ node {
+ value = 1
+}
diff --git a/tools/bootconfig/samples/bad-value.bconf b/tools/bootconfig/samples/bad-value.bconf
new file mode 100644
index 0000000..a1217fe
--- /dev/null
+++ b/tools/bootconfig/samples/bad-value.bconf
@@ -0,0 +1,3 @@
+# Quotes error
+value = "data
+
diff --git a/tools/bootconfig/samples/escaped.bconf b/tools/bootconfig/samples/escaped.bconf
new file mode 100644
index 0000000..9f72043
--- /dev/null
+++ b/tools/bootconfig/samples/escaped.bconf
@@ -0,0 +1,3 @@
+key1 = "A\B\C"
+key2 = '\'\''
+key3 = "\\"
diff --git a/tools/bootconfig/samples/good-array-space-comment.bconf b/tools/bootconfig/samples/good-array-space-comment.bconf
new file mode 100644
index 0000000..45b938d
--- /dev/null
+++ b/tools/bootconfig/samples/good-array-space-comment.bconf
@@ -0,0 +1,4 @@
+key = # comment
+ "value1", # comment1
+ "value2" , # comment2
+ "value3"
diff --git a/tools/bootconfig/samples/good-comment-after-value.bconf b/tools/bootconfig/samples/good-comment-after-value.bconf
new file mode 100644
index 0000000..0d92a85
--- /dev/null
+++ b/tools/bootconfig/samples/good-comment-after-value.bconf
@@ -0,0 +1 @@
+key = "value" # comment
diff --git a/tools/bootconfig/samples/good-override.bconf b/tools/bootconfig/samples/good-override.bconf
new file mode 100644
index 0000000..7d31d5f
--- /dev/null
+++ b/tools/bootconfig/samples/good-override.bconf
@@ -0,0 +1,6 @@
+# Override the value
+key.word = 1,2,4
+key.word := 2,3
+
+# No pre-defined key
+key.new.word := "new"
diff --git a/tools/bootconfig/samples/good-printables.bconf b/tools/bootconfig/samples/good-printables.bconf
new file mode 100644
index 0000000..ebb985a
--- /dev/null
+++ b/tools/bootconfig/samples/good-printables.bconf
@@ -0,0 +1,2 @@
+key = "
+ !#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~"
diff --git a/tools/bootconfig/samples/good-simple.bconf b/tools/bootconfig/samples/good-simple.bconf
new file mode 100644
index 0000000..37dd6d2
--- /dev/null
+++ b/tools/bootconfig/samples/good-simple.bconf
@@ -0,0 +1,11 @@
+# A good simple bootconfig
+
+key.word1 = 1
+key.word2=2
+key.word3 = 3;
+
+key {
+word4 = 4 }
+
+key { word5 = 5; word6 = 6 }
+
diff --git a/tools/bootconfig/samples/good-single.bconf b/tools/bootconfig/samples/good-single.bconf
new file mode 100644
index 0000000..98e55ad
--- /dev/null
+++ b/tools/bootconfig/samples/good-single.bconf
@@ -0,0 +1,4 @@
+# single key style
+key = 1
+key2 = 2
+key3 = "alpha", "beta"
diff --git a/tools/bootconfig/samples/good-space-after-value.bconf b/tools/bootconfig/samples/good-space-after-value.bconf
new file mode 100644
index 0000000..56c15cb
--- /dev/null
+++ b/tools/bootconfig/samples/good-space-after-value.bconf
@@ -0,0 +1 @@
+key = "value"
diff --git a/tools/bootconfig/samples/good-tree.bconf b/tools/bootconfig/samples/good-tree.bconf
new file mode 100644
index 0000000..f2ddefc
--- /dev/null
+++ b/tools/bootconfig/samples/good-tree.bconf
@@ -0,0 +1,12 @@
+key {
+ word {
+ tree {
+ value = "0"}
+ }
+ word2 {
+ tree {
+ value = 1,2 }
+ }
+}
+other.tree {
+ value = 2; value2 = 3;}
diff --git a/tools/bootconfig/scripts/bconf2ftrace.sh b/tools/bootconfig/scripts/bconf2ftrace.sh
new file mode 100755
index 0000000..feb30c2
--- /dev/null
+++ b/tools/bootconfig/scripts/bconf2ftrace.sh
@@ -0,0 +1,200 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0-only
+
+usage() {
+ echo "Ftrace boottime trace test tool"
+ echo "Usage: $0 [--apply|--init] [--debug] BOOTCONFIG-FILE"
+ echo " --apply: Test actual apply to tracefs (need sudo)"
+ echo " --init: Initialize ftrace before applying (imply --apply)"
+ exit 1
+}
+
+[ $# -eq 0 ] && usage
+
+BCONF=
+DEBUG=
+APPLY=
+INIT=
+while [ x"$1" != x ]; do
+ case "$1" in
+ "--debug")
+ DEBUG=$1;;
+ "--apply")
+ APPLY=$1;;
+ "--init")
+ APPLY=$1
+ INIT=$1;;
+ *)
+ [ ! -f $1 ] && usage
+ BCONF=$1;;
+ esac
+ shift 1
+done
+
+if [ x"$APPLY" != x ]; then
+ if [ `id -u` -ne 0 ]; then
+ echo "This must be run by root user. Try sudo." 1>&2
+ exec sudo $0 $DEBUG $APPLY $BCONF
+ fi
+fi
+
+run_cmd() { # command
+ echo "$*"
+ if [ x"$APPLY" != x ]; then # apply command
+ eval $*
+ fi
+}
+
+if [ x"$DEBUG" != x ]; then
+ set -x
+fi
+
+TRACEFS=`grep -m 1 -w tracefs /proc/mounts | cut -f 2 -d " "`
+if [ -z "$TRACEFS" ]; then
+ if ! grep -wq debugfs /proc/mounts; then
+ echo "Error: No tracefs/debugfs was mounted." 1>&2
+ exit 1
+ fi
+ TRACEFS=`grep -m 1 -w debugfs /proc/mounts | cut -f 2 -d " "`/tracing
+ if [ ! -d $TRACEFS ]; then
+ echo "Error: ftrace is not enabled on this kernel." 1>&2
+ exit 1
+ fi
+fi
+
+if [ x"$INIT" != x ]; then
+ . `dirname $0`/ftrace.sh
+ (cd $TRACEFS; initialize_ftrace)
+fi
+
+. `dirname $0`/xbc.sh
+
+######## main #########
+set -e
+
+xbc_init $BCONF
+
+set_value_of() { # key file
+ if xbc_has_key $1; then
+ val=`xbc_get_val $1 1`
+ run_cmd "echo '$val' >> $2"
+ fi
+}
+
+set_array_of() { # key file
+ if xbc_has_key $1; then
+ xbc_get_val $1 | while read line; do
+ run_cmd "echo '$line' >> $2"
+ done
+ fi
+}
+
+compose_synth() { # event_name branch
+ echo -n "$1 "
+ xbc_get_val $2 | while read field; do echo -n "$field; "; done
+}
+
+setup_event() { # prefix group event [instance]
+ branch=$1.$2.$3
+ if [ "$4" ]; then
+ eventdir="$TRACEFS/instances/$4/events/$2/$3"
+ else
+ eventdir="$TRACEFS/events/$2/$3"
+ fi
+ case $2 in
+ kprobes)
+ xbc_get_val ${branch}.probes | while read line; do
+ run_cmd "echo 'p:kprobes/$3 $line' >> $TRACEFS/kprobe_events"
+ done
+ ;;
+ synthetic)
+ run_cmd "echo '`compose_synth $3 ${branch}.fields`' >> $TRACEFS/synthetic_events"
+ ;;
+ esac
+
+ set_value_of ${branch}.filter ${eventdir}/filter
+ set_array_of ${branch}.actions ${eventdir}/trigger
+
+ if xbc_has_key ${branch}.enable; then
+ run_cmd "echo 1 > ${eventdir}/enable"
+ fi
+}
+
+setup_events() { # prefix("ftrace" or "ftrace.instance.INSTANCE") [instance]
+ prefix="${1}.event"
+ if xbc_has_branch ${1}.event; then
+ for grpev in `xbc_subkeys ${1}.event 2`; do
+ setup_event $prefix ${grpev%.*} ${grpev#*.} $2
+ done
+ fi
+}
+
+size2kb() { # size[KB|MB]
+ case $1 in
+ *KB)
+ echo ${1%KB};;
+ *MB)
+ expr ${1%MB} \* 1024;;
+ *)
+ expr $1 / 1024 ;;
+ esac
+}
+
+setup_instance() { # [instance]
+ if [ "$1" ]; then
+ instance="ftrace.instance.${1}"
+ instancedir=$TRACEFS/instances/$1
+ else
+ instance="ftrace"
+ instancedir=$TRACEFS
+ fi
+
+ set_array_of ${instance}.options ${instancedir}/trace_options
+ set_value_of ${instance}.trace_clock ${instancedir}/trace_clock
+ set_value_of ${instance}.cpumask ${instancedir}/tracing_cpumask
+ set_value_of ${instance}.tracing_on ${instancedir}/tracing_on
+ set_value_of ${instance}.tracer ${instancedir}/current_tracer
+ set_array_of ${instance}.ftrace.filters \
+ ${instancedir}/set_ftrace_filter
+ set_array_of ${instance}.ftrace.notrace \
+ ${instancedir}/set_ftrace_notrace
+
+ if xbc_has_key ${instance}.alloc_snapshot; then
+ run_cmd "echo 1 > ${instancedir}/snapshot"
+ fi
+
+ if xbc_has_key ${instance}.buffer_size; then
+ size=`xbc_get_val ${instance}.buffer_size 1`
+ size=`eval size2kb $size`
+ run_cmd "echo $size >> ${instancedir}/buffer_size_kb"
+ fi
+
+ setup_events ${instance} $1
+ set_array_of ${instance}.events ${instancedir}/set_event
+}
+
+# ftrace global configs (kernel.*)
+if xbc_has_key "kernel.dump_on_oops"; then
+ dump_mode=`xbc_get_val "kernel.dump_on_oops" 1`
+ [ "$dump_mode" ] && dump_mode=`eval echo $dump_mode` || dump_mode=1
+ run_cmd "echo \"$dump_mode\" > /proc/sys/kernel/ftrace_dump_on_oops"
+fi
+
+set_value_of kernel.fgraph_max_depth $TRACEFS/max_graph_depth
+set_array_of kernel.fgraph_filters $TRACEFS/set_graph_function
+set_array_of kernel.fgraph_notraces $TRACEFS/set_graph_notrace
+
+# Per-instance/per-event configs
+if ! xbc_has_branch "ftrace" ; then
+ exit 0
+fi
+
+setup_instance # root instance
+
+if xbc_has_branch "ftrace.instance"; then
+ for i in `xbc_subkeys "ftrace.instance" 1`; do
+ run_cmd "mkdir -p $TRACEFS/instances/$i"
+ setup_instance $i
+ done
+fi
+
diff --git a/tools/bootconfig/scripts/ftrace.sh b/tools/bootconfig/scripts/ftrace.sh
new file mode 100644
index 0000000..186eed9
--- /dev/null
+++ b/tools/bootconfig/scripts/ftrace.sh
@@ -0,0 +1,109 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
+clear_trace() { # reset trace output
+ echo > trace
+}
+
+disable_tracing() { # stop trace recording
+ echo 0 > tracing_on
+}
+
+enable_tracing() { # start trace recording
+ echo 1 > tracing_on
+}
+
+reset_tracer() { # reset the current tracer
+ echo nop > current_tracer
+}
+
+reset_trigger_file() {
+ # remove action triggers first
+ grep -H ':on[^:]*(' $@ |
+ while read line; do
+ cmd=`echo $line | cut -f2- -d: | cut -f1 -d"["`
+ file=`echo $line | cut -f1 -d:`
+ echo "!$cmd" >> $file
+ done
+ grep -Hv ^# $@ |
+ while read line; do
+ cmd=`echo $line | cut -f2- -d: | cut -f1 -d"["`
+ file=`echo $line | cut -f1 -d:`
+ echo "!$cmd" > $file
+ done
+}
+
+reset_trigger() { # reset all current setting triggers
+ if [ -d events/synthetic ]; then
+ reset_trigger_file events/synthetic/*/trigger
+ fi
+ reset_trigger_file events/*/*/trigger
+}
+
+reset_events_filter() { # reset all current setting filters
+ grep -v ^none events/*/*/filter |
+ while read line; do
+ echo 0 > `echo $line | cut -f1 -d:`
+ done
+}
+
+reset_ftrace_filter() { # reset all triggers in set_ftrace_filter
+ if [ ! -f set_ftrace_filter ]; then
+ return 0
+ fi
+ echo > set_ftrace_filter
+ grep -v '^#' set_ftrace_filter | while read t; do
+ tr=`echo $t | cut -d: -f2`
+ if [ "$tr" = "" ]; then
+ continue
+ fi
+ if ! grep -q "$t" set_ftrace_filter; then
+ continue;
+ fi
+ name=`echo $t | cut -d: -f1 | cut -d' ' -f1`
+ if [ $tr = "enable_event" -o $tr = "disable_event" ]; then
+ tr=`echo $t | cut -d: -f2-4`
+ limit=`echo $t | cut -d: -f5`
+ else
+ tr=`echo $t | cut -d: -f2`
+ limit=`echo $t | cut -d: -f3`
+ fi
+ if [ "$limit" != "unlimited" ]; then
+ tr="$tr:$limit"
+ fi
+ echo "!$name:$tr" > set_ftrace_filter
+ done
+}
+
+disable_events() {
+ echo 0 > events/enable
+}
+
+clear_synthetic_events() { # reset all current synthetic events
+ grep -v ^# synthetic_events |
+ while read line; do
+ echo "!$line" >> synthetic_events
+ done
+}
+
+initialize_ftrace() { # Reset ftrace to initial-state
+# As the initial state, ftrace will be set to nop tracer,
+# no events, no triggers, no filters, no function filters,
+# no probes, and tracing on.
+ disable_tracing
+ reset_tracer
+ reset_trigger
+ reset_events_filter
+ reset_ftrace_filter
+ disable_events
+ [ -f set_event_pid ] && echo > set_event_pid
+ [ -f set_ftrace_pid ] && echo > set_ftrace_pid
+ [ -f set_ftrace_notrace ] && echo > set_ftrace_notrace
+ [ -f set_graph_function ] && echo | tee set_graph_*
+ [ -f stack_trace_filter ] && echo > stack_trace_filter
+ [ -f kprobe_events ] && echo > kprobe_events
+ [ -f uprobe_events ] && echo > uprobe_events
+ [ -f synthetic_events ] && echo > synthetic_events
+ [ -f snapshot ] && echo 0 > snapshot
+ clear_trace
+ enable_tracing
+}
diff --git a/tools/bootconfig/scripts/ftrace2bconf.sh b/tools/bootconfig/scripts/ftrace2bconf.sh
new file mode 100755
index 0000000..fb201d5
--- /dev/null
+++ b/tools/bootconfig/scripts/ftrace2bconf.sh
@@ -0,0 +1,248 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0-only
+
+usage() {
+ echo "Dump boot-time tracing bootconfig from ftrace"
+ echo "Usage: $0 [--debug] [ > BOOTCONFIG-FILE]"
+ exit 1
+}
+
+DEBUG=
+while [ x"$1" != x ]; do
+ case "$1" in
+ "--debug")
+ DEBUG=$1;;
+ -*)
+ usage
+ ;;
+ esac
+ shift 1
+done
+
+if [ x"$DEBUG" != x ]; then
+ set -x
+fi
+
+TRACEFS=`grep -m 1 -w tracefs /proc/mounts | cut -f 2 -d " "`
+if [ -z "$TRACEFS" ]; then
+ if ! grep -wq debugfs /proc/mounts; then
+ echo "Error: No tracefs/debugfs was mounted."
+ exit 1
+ fi
+ TRACEFS=`grep -m 1 -w debugfs /proc/mounts | cut -f 2 -d " "`/tracing
+ if [ ! -d $TRACEFS ]; then
+ echo "Error: ftrace is not enabled on this kernel." 1>&2
+ exit 1
+ fi
+fi
+
+######## main #########
+
+set -e
+
+emit_kv() { # key =|+= value
+ echo "$@"
+}
+
+global_options() {
+ val=`cat $TRACEFS/max_graph_depth`
+ [ $val != 0 ] && emit_kv kernel.fgraph_max_depth = $val
+ if grep -qv "^#" $TRACEFS/set_graph_function $TRACEFS/set_graph_notrace ; then
+ cat 1>&2 << EOF
+# WARN: kernel.fgraph_filters and kernel.fgraph_notrace are not supported, since the wild card expression was expanded and lost from memory.
+EOF
+ fi
+}
+
+kprobe_event_options() {
+ cat $TRACEFS/kprobe_events | while read p args; do
+ case $p in
+ r*)
+ cat 1>&2 << EOF
+# WARN: A return probe found but it is not supported by bootconfig. Skip it.
+EOF
+ continue;;
+ esac
+ p=${p#*:}
+ event=${p#*/}
+ group=${p%/*}
+ if [ $group != "kprobes" ]; then
+ cat 1>&2 << EOF
+# WARN: kprobes group name $group is changed to "kprobes" for bootconfig.
+EOF
+ fi
+ emit_kv $PREFIX.event.kprobes.$event.probes += $args
+ done
+}
+
+synth_event_options() {
+ cat $TRACEFS/synthetic_events | while read event fields; do
+ emit_kv $PREFIX.event.synthetic.$event.fields = `echo $fields | sed "s/;/,/g"`
+ done
+}
+
+# Variables resolver
+DEFINED_VARS=
+UNRESOLVED_EVENTS=
+
+defined_vars() { # event-dir
+ grep "^hist" $1/trigger | grep -o ':[a-zA-Z0-9]*='
+}
+referred_vars() {
+ grep "^hist" $1/trigger | grep -o '$[a-zA-Z0-9]*'
+}
+
+per_event_options() { # event-dir
+ evdir=$1
+ # Check the special event which has no filter and no trigger
+ [ ! -f $evdir/filter ] && return
+
+ if grep -q "^hist:" $evdir/trigger; then
+ # hist action can refer the undefined variables
+ __vars=`defined_vars $evdir`
+ for v in `referred_vars $evdir`; do
+ if echo $DEFINED_VARS $__vars | grep -vqw ${v#$}; then
+ # $v is not defined yet, defer it
+ UNRESOLVED_EVENTS="$UNRESOLVED_EVENTS $evdir"
+ return;
+ fi
+ done
+ DEFINED_VARS="$DEFINED_VARS "`defined_vars $evdir`
+ fi
+ grep -v "^#" $evdir/trigger | while read action active; do
+ emit_kv $PREFIX.event.$group.$event.actions += \'$action\'
+ done
+
+ # enable is not checked; this is done by set_event in the instance.
+ val=`cat $evdir/filter`
+ if [ "$val" != "none" ]; then
+ emit_kv $PREFIX.event.$group.$event.filter = "$val"
+ fi
+}
+
+retry_unresolved() {
+ unresolved=$UNRESOLVED_EVENTS
+ UNRESOLVED_EVENTS=
+ for evdir in $unresolved; do
+ event=${evdir##*/}
+ group=${evdir%/*}; group=${group##*/}
+ per_event_options $evdir
+ done
+}
+
+event_options() {
+ # PREFIX and INSTANCE must be set
+ if [ $PREFIX = "ftrace" ]; then
+ # define the dynamic events
+ kprobe_event_options
+ synth_event_options
+ fi
+ for group in `ls $INSTANCE/events/` ; do
+ [ ! -d $INSTANCE/events/$group ] && continue
+ for event in `ls $INSTANCE/events/$group/` ;do
+ [ ! -d $INSTANCE/events/$group/$event ] && continue
+ per_event_options $INSTANCE/events/$group/$event
+ done
+ done
+ retry=0
+ while [ $retry -lt 3 ]; do
+ retry_unresolved
+ retry=$((retry + 1))
+ done
+ if [ "$UNRESOLVED_EVENTS" ]; then
+ cat 1>&2 << EOF
+! ERROR: hist triggers in $UNRESOLVED_EVENTS use some undefined variables.
+EOF
+ fi
+}
+
+is_default_trace_option() { # option
+grep -qw $1 << EOF
+print-parent
+nosym-offset
+nosym-addr
+noverbose
+noraw
+nohex
+nobin
+noblock
+trace_printk
+annotate
+nouserstacktrace
+nosym-userobj
+noprintk-msg-only
+context-info
+nolatency-format
+record-cmd
+norecord-tgid
+overwrite
+nodisable_on_free
+irq-info
+markers
+noevent-fork
+nopause-on-trace
+function-trace
+nofunction-fork
+nodisplay-graph
+nostacktrace
+notest_nop_accept
+notest_nop_refuse
+EOF
+}
+
+instance_options() { # [instance-name]
+ if [ $# -eq 0 ]; then
+ PREFIX="ftrace"
+ INSTANCE=$TRACEFS
+ else
+ PREFIX="ftrace.instance.$1"
+ INSTANCE=$TRACEFS/instances/$1
+ fi
+ val=
+ for i in `cat $INSTANCE/trace_options`; do
+ is_default_trace_option $i && continue
+ val="$val, $i"
+ done
+ [ "$val" ] && emit_kv $PREFIX.options = "${val#,}"
+ val="local"
+ for i in `cat $INSTANCE/trace_clock` ; do
+ [ "${i#*]}" ] && continue
+ i=${i%]}; val=${i#[}
+ done
+ [ $val != "local" ] && emit_kv $PREFIX.trace_clock = $val
+ val=`cat $INSTANCE/buffer_size_kb`
+ if echo $val | grep -vq "expanded" ; then
+ emit_kv $PREFIX.buffer_size = $val"KB"
+ fi
+ if grep -q "is allocated" $INSTANCE/snapshot ; then
+ emit_kv $PREFIX.alloc_snapshot
+ fi
+ val=`cat $INSTANCE/tracing_cpumask`
+ if [ `echo $val | sed -e s/f//g`x != x ]; then
+ emit_kv $PREFIX.cpumask = $val
+ fi
+ val=`cat $INSTANCE/tracing_on`
+ if [ "$val" = "0" ]; then
+ emit_kv $PREFIX.tracing_on = 0
+ fi
+
+ val=
+ for i in `cat $INSTANCE/set_event`; do
+ val="$val, $i"
+ done
+ [ "$val" ] && emit_kv $PREFIX.events = "${val#,}"
+ val=`cat $INSTANCE/current_tracer`
+ [ $val != nop ] && emit_kv $PREFIX.tracer = $val
+ if grep -qv "^#" $INSTANCE/set_ftrace_filter $INSTANCE/set_ftrace_notrace; then
+ cat 1>&2 << EOF
+# WARN: kernel.ftrace.filters and kernel.ftrace.notrace are not supported, since the wild card expression was expanded and lost from memory.
+EOF
+ fi
+ event_options
+}
+
+global_options
+instance_options
+for i in `ls $TRACEFS/instances` ; do
+ instance_options $i
+done
diff --git a/tools/bootconfig/scripts/xbc.sh b/tools/bootconfig/scripts/xbc.sh
new file mode 100644
index 0000000..b8c84e6
--- /dev/null
+++ b/tools/bootconfig/scripts/xbc.sh
@@ -0,0 +1,56 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0-only
+
+# bootconfig utility functions
+
+XBC_TMPFILE=
+XBC_BASEDIR=`dirname $0`
+BOOTCONFIG=${BOOTCONFIG:=$XBC_BASEDIR/../bootconfig}
+if [ ! -x "$BOOTCONFIG" ]; then
+ BOOTCONFIG=`which bootconfig`
+ if [ -z "$BOOTCONFIG" ]; then
+ echo "Erorr: bootconfig command is not found" 1>&2
+ exit 1
+ fi
+fi
+
+xbc_cleanup() {
+ if [ "$XBC_TMPFILE" ]; then
+ rm -f "$XBC_TMPFILE"
+ fi
+}
+
+xbc_init() { # bootconfig-file
+ xbc_cleanup
+ XBC_TMPFILE=`mktemp bconf-XXXX`
+ trap xbc_cleanup EXIT TERM
+
+ $BOOTCONFIG -l $1 > $XBC_TMPFILE || exit 1
+}
+
+nr_args() { # args
+ echo $#
+}
+
+xbc_get_val() { # key [maxnum]
+ if [ "$2" ]; then
+ MAXOPT="-L $2"
+ fi
+ grep "^$1 =" $XBC_TMPFILE | cut -d= -f2- | \
+ sed -e 's/", /" /g' -e "s/',/' /g" | \
+ xargs $MAXOPT -n 1 echo
+}
+
+xbc_has_key() { # key
+ grep -q "^$1 =" $XBC_TMPFILE
+}
+
+xbc_has_branch() { # prefix-key
+ grep -q "^$1" $XBC_TMPFILE
+}
+
+xbc_subkeys() { # prefix-key depth
+ __keys=`echo $1 | sed "s/\./ /g"`
+ __s=`nr_args $__keys`
+ grep "^$1" $XBC_TMPFILE | cut -d= -f1| cut -d. -f$((__s + 1))-$((__s + $2)) | uniq
+}
diff --git a/tools/bootconfig/test-bootconfig.sh b/tools/bootconfig/test-bootconfig.sh
new file mode 100755
index 0000000..baed891
--- /dev/null
+++ b/tools/bootconfig/test-bootconfig.sh
@@ -0,0 +1,191 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0-only
+
+echo "Boot config test script"
+
+if [ -d "$1" ]; then
+ TESTDIR=$1
+else
+ TESTDIR=.
+fi
+BOOTCONF=${TESTDIR}/bootconfig
+ALIGN=4
+
+INITRD=`mktemp ${TESTDIR}/initrd-XXXX`
+TEMPCONF=`mktemp ${TESTDIR}/temp-XXXX.bconf`
+OUTFILE=`mktemp ${TESTDIR}/tempout-XXXX`
+NG=0
+
+cleanup() {
+ rm -f $INITRD $TEMPCONF $OUTFILE
+ exit $NG
+}
+
+trap cleanup EXIT TERM
+
+NO=1
+
+xpass() { # pass test command
+ echo "test case $NO ($3)... "
+ if ! ($@ && echo "\t\t[OK]"); then
+ echo "\t\t[NG]"; NG=$((NG + 1))
+ fi
+ NO=$((NO + 1))
+}
+
+xfail() { # fail test command
+ echo "test case $NO ($3)... "
+ if ! (! $@ && echo "\t\t[OK]"); then
+ echo "\t\t[NG]"; NG=$((NG + 1))
+ fi
+ NO=$((NO + 1))
+}
+
+echo "Basic command test"
+xpass $BOOTCONF $INITRD
+
+echo "Delete command should success without bootconfig"
+xpass $BOOTCONF -d $INITRD
+
+dd if=/dev/zero of=$INITRD bs=4096 count=1
+echo "key = value;" > $TEMPCONF
+bconf_size=$(stat -c %s $TEMPCONF)
+initrd_size=$(stat -c %s $INITRD)
+
+echo "Apply command test"
+xpass $BOOTCONF -a $TEMPCONF $INITRD
+new_size=$(stat -c %s $INITRD)
+
+echo "Show command test"
+xpass $BOOTCONF $INITRD
+
+echo "File size check"
+total_size=$(expr $bconf_size + $initrd_size + 9 + 12 + $ALIGN - 1 )
+total_size=$(expr $total_size / $ALIGN)
+total_size=$(expr $total_size \* $ALIGN)
+xpass test $new_size -eq $total_size
+
+echo "Apply command repeat test"
+xpass $BOOTCONF -a $TEMPCONF $INITRD
+
+echo "File size check"
+xpass test $new_size -eq $(stat -c %s $INITRD)
+
+echo "Delete command check"
+xpass $BOOTCONF -d $INITRD
+
+echo "File size check"
+new_size=$(stat -c %s $INITRD)
+xpass test $new_size -eq $initrd_size
+
+echo "No error messge while applying"
+dd if=/dev/zero of=$INITRD bs=4096 count=1
+printf " \0\0\0 \0\0\0" >> $INITRD
+$BOOTCONF -a $TEMPCONF $INITRD > $OUTFILE 2>&1
+xfail grep -i "failed" $OUTFILE
+xfail grep -i "error" $OUTFILE
+
+echo "Max node number check"
+
+echo -n > $TEMPCONF
+for i in `seq 1 1024` ; do
+ echo "node$i" >> $TEMPCONF
+done
+xpass $BOOTCONF -a $TEMPCONF $INITRD
+
+echo "badnode" >> $TEMPCONF
+xfail $BOOTCONF -a $TEMPCONF $INITRD
+
+echo "Max filesize check"
+
+# Max size is 32767 (including terminal byte)
+echo -n "data = \"" > $TEMPCONF
+dd if=/dev/urandom bs=768 count=32 | base64 -w0 >> $TEMPCONF
+echo "\"" >> $TEMPCONF
+xfail $BOOTCONF -a $TEMPCONF $INITRD
+
+truncate -s 32764 $TEMPCONF
+echo "\"" >> $TEMPCONF # add 2 bytes + terminal ('\"\n\0')
+xpass $BOOTCONF -a $TEMPCONF $INITRD
+
+echo "Adding same-key values"
+cat > $TEMPCONF << EOF
+key = bar, baz
+key += qux
+EOF
+echo > $INITRD
+
+xpass $BOOTCONF -a $TEMPCONF $INITRD
+$BOOTCONF $INITRD > $OUTFILE
+xpass grep -q "bar" $OUTFILE
+xpass grep -q "baz" $OUTFILE
+xpass grep -q "qux" $OUTFILE
+
+echo "Override same-key values"
+cat > $TEMPCONF << EOF
+key = bar, baz
+key := qux
+EOF
+echo > $INITRD
+
+xpass $BOOTCONF -a $TEMPCONF $INITRD
+$BOOTCONF $INITRD > $OUTFILE
+xfail grep -q "bar" $OUTFILE
+xfail grep -q "baz" $OUTFILE
+xpass grep -q "qux" $OUTFILE
+
+echo "Double/single quotes test"
+echo "key = '\"string\"';" > $TEMPCONF
+$BOOTCONF -a $TEMPCONF $INITRD
+$BOOTCONF $INITRD > $TEMPCONF
+cat $TEMPCONF
+xpass grep \'\"string\"\' $TEMPCONF
+
+echo "Repeat same-key tree"
+cat > $TEMPCONF << EOF
+foo
+bar
+foo { buz }
+EOF
+echo > $INITRD
+
+xpass $BOOTCONF -a $TEMPCONF $INITRD
+$BOOTCONF $INITRD > $OUTFILE
+xpass grep -q "bar" $OUTFILE
+
+
+echo "Remove/keep tailing spaces"
+cat > $TEMPCONF << EOF
+foo = val # comment
+bar = "val2 " # comment
+EOF
+echo > $INITRD
+
+xpass $BOOTCONF -a $TEMPCONF $INITRD
+$BOOTCONF $INITRD > $OUTFILE
+xfail grep -q val[[:space:]] $OUTFILE
+xpass grep -q val2[[:space:]] $OUTFILE
+
+echo "=== expected failure cases ==="
+for i in samples/bad-* ; do
+ xfail $BOOTCONF -a $i $INITRD
+done
+
+echo "=== expected success cases ==="
+for i in samples/good-* ; do
+ xpass $BOOTCONF -a $i $INITRD
+done
+
+
+echo
+echo "=== Summary ==="
+echo "# of Passed: $(expr $NO - $NG - 1)"
+echo "# of Failed: $NG"
+
+echo
+if [ $NG -eq 0 ]; then
+ echo "All tests passed"
+else
+ echo "$NG tests failed"
+ exit 1
+fi