| 1 | // SPDX-License-Identifier: GPL-2.0 |
|---|---|
| 2 | /* |
| 3 | * Copyright (C) 2020-2022 Loongson Technology Corporation Limited |
| 4 | */ |
| 5 | #include <linux/kernel.h> |
| 6 | #include <linux/acpi.h> |
| 7 | #include <linux/efi.h> |
| 8 | #include <linux/export.h> |
| 9 | #include <linux/pm.h> |
| 10 | #include <linux/types.h> |
| 11 | #include <linux/reboot.h> |
| 12 | #include <linux/delay.h> |
| 13 | #include <linux/console.h> |
| 14 | |
| 15 | #include <acpi/reboot.h> |
| 16 | #include <asm/idle.h> |
| 17 | #include <asm/loongarch.h> |
| 18 | #include <asm/loongson.h> |
| 19 | |
| 20 | void (*pm_power_off)(void); |
| 21 | EXPORT_SYMBOL(pm_power_off); |
| 22 | |
| 23 | void machine_halt(void) |
| 24 | { |
| 25 | #ifdef CONFIG_SMP |
| 26 | preempt_disable(); |
| 27 | smp_send_stop(); |
| 28 | #endif |
| 29 | local_irq_disable(); |
| 30 | clear_csr_ecfg(ECFG0_IM); |
| 31 | |
| 32 | pr_notice("\n\n** You can safely turn off the power now **\n\n"); |
| 33 | console_flush_on_panic(mode: CONSOLE_FLUSH_PENDING); |
| 34 | |
| 35 | while (true) { |
| 36 | __arch_cpu_idle(); |
| 37 | } |
| 38 | } |
| 39 | |
| 40 | void machine_power_off(void) |
| 41 | { |
| 42 | #ifdef CONFIG_SMP |
| 43 | preempt_disable(); |
| 44 | smp_send_stop(); |
| 45 | #endif |
| 46 | #ifdef CONFIG_PM |
| 47 | if (!acpi_disabled) |
| 48 | enable_pci_wakeup(); |
| 49 | #endif |
| 50 | do_kernel_power_off(); |
| 51 | #ifdef CONFIG_EFI |
| 52 | efi.reset_system(EFI_RESET_SHUTDOWN, EFI_SUCCESS, 0, NULL); |
| 53 | #endif |
| 54 | |
| 55 | while (true) { |
| 56 | __arch_cpu_idle(); |
| 57 | } |
| 58 | } |
| 59 | |
| 60 | void machine_restart(char *command) |
| 61 | { |
| 62 | #ifdef CONFIG_SMP |
| 63 | preempt_disable(); |
| 64 | smp_send_stop(); |
| 65 | #endif |
| 66 | do_kernel_restart(cmd: command); |
| 67 | #ifdef CONFIG_EFI |
| 68 | if (efi_capsule_pending(NULL)) |
| 69 | efi_reboot(reboot_mode: REBOOT_WARM, NULL); |
| 70 | else |
| 71 | efi_reboot(reboot_mode: REBOOT_COLD, NULL); |
| 72 | #endif |
| 73 | if (!acpi_disabled) |
| 74 | acpi_reboot(); |
| 75 | |
| 76 | while (true) { |
| 77 | __arch_cpu_idle(); |
| 78 | } |
| 79 | } |
| 80 |