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// 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_CORE
.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_CORE
void machine_crash_shutdown(struct pt_regs *regs)
{
machine_ops.crash_shutdown(regs);
}
#endif
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