kernel-ark/arch/mips/kernel/reset.c
Andrew Bresticker f45e388ff0 MIPS: Provide fallback reboot/poweroff/halt implementations
If a machine-specific hook is not implemented for restart, poweroff,
or halt, fall back to halting secondary CPUs, disabling interrupts,
and spinning.  In the case of restart, attempt to restart the system
via do_kernel_restart() (which will call any registered restart
handlers) before halting.

Signed-off-by: Andrew Bresticker <abrestic@chromium.org>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Maciej W. Rozycki <macro@linux-mips.org>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/9600/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-04-01 17:21:58 +02:00

70 lines
1.3 KiB
C

/*
* 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.
*
* Copyright (C) 2001, 06 by Ralf Baechle (ralf@linux-mips.org)
* Copyright (C) 2001 MIPS Technologies, Inc.
*/
#include <linux/kernel.h>
#include <linux/export.h>
#include <linux/pm.h>
#include <linux/types.h>
#include <linux/reboot.h>
#include <linux/delay.h>
#include <asm/reboot.h>
/*
* Urgs ... Too many MIPS machines to handle this in a generic way.
* So handle all using function pointers to machine specific
* functions.
*/
void (*_machine_restart)(char *command);
void (*_machine_halt)(void);
void (*pm_power_off)(void);
EXPORT_SYMBOL(pm_power_off);
void machine_restart(char *command)
{
if (_machine_restart)
_machine_restart(command);
#ifdef CONFIG_SMP
preempt_disable();
smp_send_stop();
#endif
do_kernel_restart(command);
mdelay(1000);
pr_emerg("Reboot failed -- System halted\n");
local_irq_disable();
while (1);
}
void machine_halt(void)
{
if (_machine_halt)
_machine_halt();
#ifdef CONFIG_SMP
preempt_disable();
smp_send_stop();
#endif
local_irq_disable();
while (1);
}
void machine_power_off(void)
{
if (pm_power_off)
pm_power_off();
#ifdef CONFIG_SMP
preempt_disable();
smp_send_stop();
#endif
local_irq_disable();
while (1);
}