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