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sh: Kill off machvec aliases.

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We now throw all of the machvecs in to .machvec.init and either
select one on the command line, or copy out the first (and
usually only) one to sh_mv. The rest are freed as usual.

This gets rid of all of the silly sh_mv aliasing and makes the
selection explicit rather than link-order dependent.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Paul Mundt
2007-05-15 15:19:34 +09:00
committed by Paul Mundt
parent 25f8151bdc
commit 82f81f4784
32 changed files with 69 additions and 91 deletions
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45
arch/sh/kernel/machvec.c
View File

@@ -29,7 +29,7 @@ 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)
if (strcasecmp(name, mv->mv_name) == 0)
return mv;
return NULL;
@@ -55,26 +55,43 @@ static int __init early_parse_mv(char *from)
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;
}
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)
{
/*
* Only overload the machvec if one hasn't been selected on
* the command line with sh_mv=
*/
if (strcmp(sh_mv.mv_name, "Unknown") != 0) {
unsigned long machvec_size;
machvec_size = ((unsigned long)&__machvec_end -
(unsigned long)&__machvec_start);
/*
* 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.

7
arch/sh/kernel/setup.c
View File

@@ -42,6 +42,13 @@ extern void * __rd_start, * __rd_end;
* The bigger value means no problem.
*/
struct sh_cpuinfo boot_cpu_data = { CPU_SH_NONE, 10000000, };
/*
* The machine vector. First entry in .machvec.init, or clobbered by
* sh_mv= on the command line, prior to .machvec.init teardown.
*/
struct sh_machine_vector sh_mv = { .mv_name = "Unknown", };
#ifdef CONFIG_VT
struct screen_info screen_info;
#endif