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-rw-r--r--arch/sh/kernel/machvec.c105
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 00000000000..1e78191154e
--- /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;
+}