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/*
* 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;
}
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