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reboot: move arch/x86 reboot= handling to generic kernel

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Merge together the unicore32, arm, and x86 reboot= command line
parameter handling.

Signed-off-by: Robin Holt <holt@sgi.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Cc: Russ Anderson <rja@sgi.com>
Cc: Robin Holt <holt@sgi.com>
Acked-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Guan Xuetao <gxt@mprc.pku.edu.cn>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Robin Holt
2013-07-08 16:01:42 -07:00
committed by Linus Torvalds
parent 7b6d864b48
commit 1b3a5d02ee
8 changed files with 107 additions and 145 deletions
Download Patch File Download Diff File Expand all files Collapse all files

76
kernel/reboot.c
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@@ -6,6 +6,7 @@
#define pr_fmt(fmt) "reboot: " fmt
#include <linux/ctype.h>
#include <linux/export.h>
#include <linux/kexec.h>
#include <linux/kmod.h>
@@ -24,6 +25,18 @@ int C_A_D = 1;
struct pid *cad_pid;
EXPORT_SYMBOL(cad_pid);
#if defined(CONFIG_ARM) || defined(CONFIG_UNICORE32)
#define DEFAULT_REBOOT_MODE = REBOOT_HARD
#else
#define DEFAULT_REBOOT_MODE
#endif
enum reboot_mode reboot_mode DEFAULT_REBOOT_MODE;
int reboot_default;
int reboot_cpu;
enum reboot_type reboot_type = BOOT_ACPI;
int reboot_force;
/*
* If set, this is used for preparing the system to power off.
*/
@@ -87,7 +100,7 @@ EXPORT_SYMBOL(unregister_reboot_notifier);
static void migrate_to_reboot_cpu(void)
{
/* The boot cpu is always logical cpu 0 */
int cpu = 0;
int cpu = reboot_cpu;
cpu_hotplug_disable();
@@ -343,3 +356,64 @@ int orderly_poweroff(bool force)
return 0;
}
EXPORT_SYMBOL_GPL(orderly_poweroff);
static int __init reboot_setup(char *str)
{
for (;;) {
/*
* Having anything passed on the command line via
* reboot= will cause us to disable DMI checking
* below.
*/
reboot_default = 0;
switch (*str) {
case 'w':
reboot_mode = REBOOT_WARM;
break;
case 'c':
reboot_mode = REBOOT_COLD;
break;
case 'h':
reboot_mode = REBOOT_HARD;
break;
case 's':
if (isdigit(*(str+1)))
reboot_cpu = simple_strtoul(str+1, NULL, 0);
else if (str[1] == 'm' && str[2] == 'p' &&
isdigit(*(str+3)))
reboot_cpu = simple_strtoul(str+3, NULL, 0);
else
reboot_mode = REBOOT_SOFT;
break;
case 'g':
reboot_mode = REBOOT_GPIO;
break;
case 'b':
case 'a':
case 'k':
case 't':
case 'e':
case 'p':
reboot_type = *str;
break;
case 'f':
reboot_force = 1;
break;
}
str = strchr(str, ',');
if (str)
str++;
else
break;
}
return 1;
}
__setup("reboot=", reboot_setup);