projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 8562c99c MF |
1 | /* |
| 2 | * Copyright (C) 2014 Intel Corporation; author Matt Fleming | |
| 3 | * Copyright (c) 2014 Red Hat, Inc., Mark Salter <msalter@redhat.com> | |
| 4 | */ | |
| 5 | #include <linux/efi.h> | |
| 6 | #include <linux/reboot.h> | |
| 7 | ||
| 44be28e9 MF |
8 | int efi_reboot_quirk_mode = -1; |
| 9 | ||
| 8562c99c MF |
10 | void efi_reboot(enum reboot_mode reboot_mode, const char *__unused) |
| 11 | { | |
| 12 | int efi_mode; | |
| 13 | ||
| 14 | if (!efi_enabled(EFI_RUNTIME_SERVICES)) | |
| 15 | return; | |
| 16 | ||
| 17 | switch (reboot_mode) { | |
| 18 | case REBOOT_WARM: | |
| 19 | case REBOOT_SOFT: | |
| 20 | efi_mode = EFI_RESET_WARM; | |
| 21 | break; | |
| 22 | default: | |
| 23 | efi_mode = EFI_RESET_COLD; | |
| 24 | break; | |
| 25 | } | |
| 26 | ||
| 44be28e9 MF |
27 | /* |
| 28 | * If a quirk forced an EFI reset mode, always use that. | |
| 29 | */ | |
| 30 | if (efi_reboot_quirk_mode != -1) | |
| 31 | efi_mode = efi_reboot_quirk_mode; | |
| 32 | ||
| 8562c99c MF |
33 | efi.reset_system(efi_mode, EFI_SUCCESS, 0, NULL); |
| 34 | } | |
| 0c5ed61a MF |
35 | |
| 36 | bool __weak efi_poweroff_required(void) | |
| 37 | { | |
| 38 | return false; | |
| 39 | } | |
| 40 | ||
| 41 | static void efi_power_off(void) | |
| 42 | { | |
| 43 | efi.reset_system(EFI_RESET_SHUTDOWN, EFI_SUCCESS, 0, NULL); | |
| 44 | } | |
| 45 | ||
| 46 | static int __init efi_shutdown_init(void) | |
| 47 | { | |
| 48 | if (!efi_enabled(EFI_RUNTIME_SERVICES)) | |
| 49 | return -ENODEV; | |
| 50 | ||
| 51 | if (efi_poweroff_required()) | |
| 52 | pm_power_off = efi_power_off; | |
| 53 | ||
| 54 | return 0; | |
| 55 | } | |
| 56 | late_initcall(efi_shutdown_init); |