1 files changed, 105 insertions, 0 deletions

diff --git a/arch/sh/kernel/machvec.c b/arch/sh/kernel/machvec.c
new file mode 100644
index 000000000000..1e78191154e3
--- /dev/null
+++ b/arch/sh/kernel/machvec.c
@@ -0,0 +1,105 @@
+/*
+ * 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/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, get_system_type()) == 0)
+                        return mv;
+
+        return NULL;
+}
+
+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;
+
+        if (strcmp(sh_mv.mv_name, mv_name) != 0) {
+                mvp = get_mv_byname(mv_name);
+                if (unlikely(!mvp)) {
+                        printk("Available vectors:\n\n\t");
+                        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;
+        }
+
+        printk(KERN_NOTICE "Booting machvec: %s\n", sh_mv.mv_name);
+        return 0;
+}
+early_param("sh_mv", early_parse_mv);
+
+void __init sh_mv_setup(void)
+{
+        /*
+         * 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(inb);    mv_set(inw);    mv_set(inl);
+        mv_set(outb);   mv_set(outw);   mv_set(outl);
+
+        mv_set(inb_p);  mv_set(inw_p);  mv_set(inl_p);
+        mv_set(outb_p); mv_set(outw_p); mv_set(outl_p);
+
+        mv_set(insb);   mv_set(insw);   mv_set(insl);
+        mv_set(outsb);  mv_set(outsw);  mv_set(outsl);
+
+        mv_set(readb);  mv_set(readw);  mv_set(readl);
+        mv_set(writeb); mv_set(writew); mv_set(writel);
+
+        mv_set(ioport_map);
+        mv_set(ioport_unmap);
+        mv_set(irq_demux);
+
+        if (!sh_mv.mv_nr_irqs)
+                sh_mv.mv_nr_irqs = NR_IRQS;
+}