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); |