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[POWERPC] Move some kexec logic into machine_kexec.c

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We're missing a few functions for kexec to compile on 32-bit. There's
nothing really 64-bit specific about the 64-bit versions, so make them
generic rather than adding empty definitions for 32-bit.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Michael Ellerman 2006-07-05 14:39:42 +10:00 committed by Paul Mackerras
parent 90bdde362c
commit 47585d8f5d
2 changed files with 56 additions and 56 deletions
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56
arch/powerpc/kernel/machine_kexec.c
View file

@ -13,6 +13,7 @@
#include <linux/reboot.h>
#include <linux/threads.h>
#include <asm/machdep.h>
#include <asm/lmb.h>
void machine_crash_shutdown(struct pt_regs *regs)
{
@ -59,3 +60,58 @@ NORET_TYPE void machine_kexec(struct kimage *image)
}
for(;;);
}
static int __init early_parse_crashk(char *p)
{
unsigned long size;
if (!p)
return 1;
size = memparse(p, &p);
if (*p == '@')
crashk_res.start = memparse(p + 1, &p);
else
crashk_res.start = KDUMP_KERNELBASE;
crashk_res.end = crashk_res.start + size - 1;
return 0;
}
early_param("crashkernel", early_parse_crashk);
void __init reserve_crashkernel(void)
{
unsigned long size;
if (crashk_res.start == 0)
return;
/* We might have got these values via the command line or the
* device tree, either way sanitise them now. */
size = crashk_res.end - crashk_res.start + 1;
if (crashk_res.start != KDUMP_KERNELBASE)
printk("Crash kernel location must be 0x%x\n",
KDUMP_KERNELBASE);
crashk_res.start = KDUMP_KERNELBASE;
size = PAGE_ALIGN(size);
crashk_res.end = crashk_res.start + size - 1;
/* Crash kernel trumps memory limit */
if (memory_limit && memory_limit <= crashk_res.end) {
memory_limit = crashk_res.end + 1;
printk("Adjusted memory limit for crashkernel, now 0x%lx\n",
memory_limit);
}
lmb_reserve(crashk_res.start, size);
}
int overlaps_crashkernel(unsigned long start, unsigned long size)
{
return (start + size) > crashk_res.start && start <= crashk_res.end;
}

56
arch/powerpc/kernel/machine_kexec_64.c
View file

@ -21,7 +21,6 @@
#include <asm/machdep.h>
#include <asm/cacheflush.h>
#include <asm/paca.h>
#include <asm/lmb.h>
#include <asm/mmu.h>
#include <asm/sections.h> /* _end */
#include <asm/prom.h>
@ -385,58 +384,3 @@ static int __init kexec_setup(void)
return 0;
}
__initcall(kexec_setup);
static int __init early_parse_crashk(char *p)
{
unsigned long size;
if (!p)
return 1;
size = memparse(p, &p);
if (*p == '@')
crashk_res.start = memparse(p + 1, &p);
else
crashk_res.start = KDUMP_KERNELBASE;
crashk_res.end = crashk_res.start + size - 1;
return 0;
}
early_param("crashkernel", early_parse_crashk);
void __init reserve_crashkernel(void)
{
unsigned long size;
if (crashk_res.start == 0)
return;
/* We might have got these values via the command line or the
* device tree, either way sanitise them now. */
size = crashk_res.end - crashk_res.start + 1;
if (crashk_res.start != KDUMP_KERNELBASE)
printk("Crash kernel location must be 0x%x\n",
KDUMP_KERNELBASE);
crashk_res.start = KDUMP_KERNELBASE;
size = PAGE_ALIGN(size);
crashk_res.end = crashk_res.start + size - 1;
/* Crash kernel trumps memory limit */
if (memory_limit && memory_limit <= crashk_res.end) {
memory_limit = crashk_res.end + 1;
printk("Adjusted memory limit for crashkernel, now 0x%lx\n",
memory_limit);
}
lmb_reserve(crashk_res.start, size);
}
int overlaps_crashkernel(unsigned long start, unsigned long size)
{
return (start + size) > crashk_res.start && start <= crashk_res.end;
}