97 lines
1.7 KiB
C
97 lines
1.7 KiB
C
|
// SPDX-License-Identifier: GPL-2.0
|
||
|
|
#include <linux/pm.h>
|
||
|
|
#include <linux/kexec.h>
|
||
|
|
#include <linux/kernel.h>
|
||
|
|
#include <linux/reboot.h>
|
||
|
|
#include <linux/module.h>
|
||
|
|
#include <asm/watchdog.h>
|
||
|
|
#include <asm/addrspace.h>
|
||
|
|
#include <asm/reboot.h>
|
||
|
|
#include <asm/tlbflush.h>
|
||
|
|
#include <asm/traps.h>
|
||
|
|
|
||
|
|
void (*pm_power_off)(void);
|
||
|
|
EXPORT_SYMBOL(pm_power_off);
|
||
|
|
|
||
|
|
static void watchdog_trigger_immediate(void)
|
||
|
|
{
|
||
|
|
sh_wdt_write_cnt(0xFF);
|
||
|
|
sh_wdt_write_csr(0xC2);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void native_machine_restart(char * __unused)
|
||
|
|
{
|
||
|
|
local_irq_disable();
|
||
|
|
|
||
|
|
/* Destroy all of the TLBs in preparation for reset by MMU */
|
||
|
|
__flush_tlb_global();
|
||
|
|
|
||
|
|
/* Address error with SR.BL=1 first. */
|
||
|
|
trigger_address_error();
|
||
|
|
|
||
|
|
/* If that fails or is unsupported, go for the watchdog next. */
|
||
|
|
watchdog_trigger_immediate();
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Give up and sleep.
|
||
|
|
*/
|
||
|
|
while (1)
|
||
|
|
cpu_sleep();
|
||
|
|
}
|
||
|
|
|
||
|
|
static void native_machine_shutdown(void)
|
||
|
|
{
|
||
|
|
smp_send_stop();
|
||
|
|
}
|
||
|
|
|
||
|
|
static void native_machine_power_off(void)
|
||
|
|
{
|
||
|
|
do_kernel_power_off();
|
||
|
|
}
|
||
|
|
|
||
|
|
static void native_machine_halt(void)
|
||
|
|
{
|
||
|
|
/* stop other cpus */
|
||
|
|
machine_shutdown();
|
||
|
|
|
||
|
|
/* stop this cpu */
|
||
|
|
stop_this_cpu(NULL);
|
||
|
|
}
|
||
|
|
|
||
|
|
struct machine_ops machine_ops = {
|
||
|
|
.power_off = native_machine_power_off,
|
||
|
|
.shutdown = native_machine_shutdown,
|
||
|
|
.restart = native_machine_restart,
|
||
|
|
.halt = native_machine_halt,
|
||
|
|
#ifdef CONFIG_KEXEC
|
||
|
|
.crash_shutdown = native_machine_crash_shutdown,
|
||
|
|
#endif
|
||
|
|
};
|
||
|
|
|
||
|
|
void machine_power_off(void)
|
||
|
|
{
|
||
|
|
machine_ops.power_off();
|
||
|
|
}
|
||
|
|
|
||
|
|
void machine_shutdown(void)
|
||
|
|
{
|
||
|
|
machine_ops.shutdown();
|
||
|
|
}
|
||
|
|
|
||
|
|
void machine_restart(char *cmd)
|
||
|
|
{
|
||
|
|
machine_ops.restart(cmd);
|
||
|
|
}
|
||
|
|
|
||
|
|
void machine_halt(void)
|
||
|
|
{
|
||
|
|
machine_ops.halt();
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifdef CONFIG_KEXEC
|
||
|
|
void machine_crash_shutdown(struct pt_regs *regs)
|
||
|
|
{
|
||
|
|
machine_ops.crash_shutdown(regs);
|
||
|
|
}
|
||
|
|
#endif
|