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 | { | |
| f0133f3c MF |
12 | const char *str[] = { "cold", "warm", "shutdown", "platform" }; |
| 13 | int efi_mode, cap_reset_mode; | |
| 8562c99c MF |
14 | |
| 15 | if (!efi_enabled(EFI_RUNTIME_SERVICES)) | |
| 16 | return; | |
| 17 | ||
| 18 | switch (reboot_mode) { | |
| 19 | case REBOOT_WARM: | |
| 20 | case REBOOT_SOFT: | |
| 21 | efi_mode = EFI_RESET_WARM; | |
| 22 | break; | |
| 23 | default: | |
| 24 | efi_mode = EFI_RESET_COLD; | |
| 25 | break; | |
| 26 | } | |
| 27 | ||
| 44be28e9 MF |
28 | /* |
| 29 | * If a quirk forced an EFI reset mode, always use that. | |
| 30 | */ | |
| 31 | if (efi_reboot_quirk_mode != -1) | |
| 32 | efi_mode = efi_reboot_quirk_mode; | |
| 33 | ||
| f0133f3c MF |
34 | if (efi_capsule_pending(&cap_reset_mode)) { |
| 35 | if (efi_mode != cap_reset_mode) | |
| 36 | printk(KERN_CRIT "efi: %s reset requested but pending " | |
| 37 | "capsule update requires %s reset... Performing " | |
| 38 | "%s reset.\n", str[efi_mode], str[cap_reset_mode], | |
| 39 | str[cap_reset_mode]); | |
| 40 | efi_mode = cap_reset_mode; | |
| 41 | } | |
| 42 | ||
| 8562c99c MF |
43 | efi.reset_system(efi_mode, EFI_SUCCESS, 0, NULL); |
| 44 | } | |
| 0c5ed61a MF |
45 | |
| 46 | bool __weak efi_poweroff_required(void) | |
| 47 | { | |
| 48 | return false; | |
| 49 | } | |
| 50 | ||
| 51 | static void efi_power_off(void) | |
| 52 | { | |
| 53 | efi.reset_system(EFI_RESET_SHUTDOWN, EFI_SUCCESS, 0, NULL); | |
| 54 | } | |
| 55 | ||
| 56 | static int __init efi_shutdown_init(void) | |
| 57 | { | |
| 58 | if (!efi_enabled(EFI_RUNTIME_SERVICES)) | |
| 59 | return -ENODEV; | |
| 60 | ||
| 61 | if (efi_poweroff_required()) | |
| 62 | pm_power_off = efi_power_off; | |
| 63 | ||
| 64 | return 0; | |
| 65 | } | |
| 66 | late_initcall(efi_shutdown_init); |