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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2020-2022 Loongson Technology Corporation Limited
*/
#include <linux/kernel.h>
#include <linux/acpi.h>
#include <linux/efi.h>
#include <linux/export.h>
#include <linux/pm.h>
#include <linux/types.h>
#include <linux/reboot.h>
#include <linux/delay.h>
#include <linux/console.h>
#include <acpi/reboot.h>
#include <asm/idle.h>
#include <asm/loongarch.h>
#include <asm/reboot.h>
static void default_halt(void)
{
local_irq_disable();
clear_csr_ecfg(ECFG0_IM);
pr_notice("\n\n** You can safely turn off the power now **\n\n");
console_flush_on_panic(CONSOLE_FLUSH_PENDING);
while (true) {
__arch_cpu_idle();
}
}
static void default_poweroff(void)
{
#ifdef CONFIG_EFI
efi.reset_system(EFI_RESET_SHUTDOWN, EFI_SUCCESS, 0, NULL);
#endif
while (true) {
__arch_cpu_idle();
}
}
static void default_restart(void)
{
#ifdef CONFIG_EFI
if (efi_capsule_pending(NULL))
efi_reboot(REBOOT_WARM, NULL);
else
efi_reboot(REBOOT_COLD, NULL);
#endif
if (!acpi_disabled)
acpi_reboot();
while (true) {
__arch_cpu_idle();
}
}
void (*pm_restart)(void);
EXPORT_SYMBOL(pm_restart);
void (*pm_power_off)(void);
EXPORT_SYMBOL(pm_power_off);
void machine_halt(void)
{
#ifdef CONFIG_SMP
preempt_disable();
smp_send_stop();
#endif
default_halt();
}
void machine_power_off(void)
{
#ifdef CONFIG_SMP
preempt_disable();
smp_send_stop();
#endif
pm_power_off();
}
void machine_restart(char *command)
{
#ifdef CONFIG_SMP
preempt_disable();
smp_send_stop();
#endif
do_kernel_restart(command);
pm_restart();
}
static int __init loongarch_reboot_setup(void)
{
pm_restart = default_restart;
pm_power_off = default_poweroff;
return 0;
}
arch_initcall(loongarch_reboot_setup);
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