v4.19.13 snapshot.
diff --git a/arch/sh/kernel/machvec.c b/arch/sh/kernel/machvec.c
new file mode 100644
index 0000000..ec05f49
--- /dev/null
+++ b/arch/sh/kernel/machvec.c
@@ -0,0 +1,124 @@
+/*
+ * arch/sh/kernel/machvec.c
+ *
+ * The SuperH machine vector setup handlers, yanked from setup.c
+ *
+ * Copyright (C) 1999 Niibe Yutaka
+ * Copyright (C) 2002 - 2007 Paul Mundt
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#include <linux/init.h>
+#include <linux/string.h>
+#include <asm/machvec.h>
+#include <asm/sections.h>
+#include <asm/addrspace.h>
+#include <asm/setup.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+
+#define MV_NAME_SIZE 32
+
+#define for_each_mv(mv) \
+ for ((mv) = (struct sh_machine_vector *)&__machvec_start; \
+ (mv) && (unsigned long)(mv) < (unsigned long)&__machvec_end; \
+ (mv)++)
+
+static struct sh_machine_vector * __init get_mv_byname(const char *name)
+{
+ struct sh_machine_vector *mv;
+
+ for_each_mv(mv)
+ if (strcasecmp(name, mv->mv_name) == 0)
+ return mv;
+
+ return NULL;
+}
+
+static unsigned int __initdata machvec_selected;
+
+static int __init early_parse_mv(char *from)
+{
+ char mv_name[MV_NAME_SIZE] = "";
+ char *mv_end;
+ char *mv_comma;
+ int mv_len;
+ struct sh_machine_vector *mvp;
+
+ mv_end = strchr(from, ' ');
+ if (mv_end == NULL)
+ mv_end = from + strlen(from);
+
+ mv_comma = strchr(from, ',');
+ mv_len = mv_end - from;
+ if (mv_len > (MV_NAME_SIZE-1))
+ mv_len = MV_NAME_SIZE-1;
+ memcpy(mv_name, from, mv_len);
+ mv_name[mv_len] = '\0';
+ from = mv_end;
+
+ machvec_selected = 1;
+
+ /* Boot with the generic vector */
+ if (strcmp(mv_name, "generic") == 0)
+ return 0;
+
+ mvp = get_mv_byname(mv_name);
+ if (unlikely(!mvp)) {
+ printk("Available vectors:\n\n\t'%s', ", sh_mv.mv_name);
+ for_each_mv(mvp)
+ printk("'%s', ", mvp->mv_name);
+ printk("\n\n");
+ panic("Failed to select machvec '%s' -- halting.\n",
+ mv_name);
+ } else
+ sh_mv = *mvp;
+
+ return 0;
+}
+early_param("sh_mv", early_parse_mv);
+
+void __init sh_mv_setup(void)
+{
+ /*
+ * Only overload the machvec if one hasn't been selected on
+ * the command line with sh_mv=
+ */
+ if (!machvec_selected) {
+ unsigned long machvec_size;
+
+ machvec_size = ((unsigned long)&__machvec_end -
+ (unsigned long)&__machvec_start);
+
+ /*
+ * Sanity check for machvec section alignment. Ensure
+ * __initmv hasn't been misused.
+ */
+ if (machvec_size % sizeof(struct sh_machine_vector))
+ panic("machvec misaligned, invalid __initmv use?");
+
+ /*
+ * If the machvec hasn't been preselected, use the first
+ * vector (usually the only one) from .machvec.init.
+ */
+ if (machvec_size >= sizeof(struct sh_machine_vector))
+ sh_mv = *(struct sh_machine_vector *)&__machvec_start;
+ }
+
+ printk(KERN_NOTICE "Booting machvec: %s\n", get_system_type());
+
+ /*
+ * Manually walk the vec, fill in anything that the board hasn't yet
+ * by hand, wrapping to the generic implementation.
+ */
+#define mv_set(elem) do { \
+ if (!sh_mv.mv_##elem) \
+ sh_mv.mv_##elem = generic_##elem; \
+} while (0)
+
+ mv_set(irq_demux);
+ mv_set(mode_pins);
+ mv_set(mem_init);
+}