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1 | /** @file\r |
2 | Template library implementation to support ResetSystem Runtime call.\r | |
3 | \r | |
4 | Fill in the templates with what ever makes you system reset.\r | |
5 | \r | |
6 | \r | |
60274cca | 7 | Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>\r |
2ef2b01e | 8 | \r |
60274cca | 9 | This program and the accompanying materials\r |
2ef2b01e A |
10 | are licensed and made available under the terms and conditions of the BSD License\r |
11 | which accompanies this distribution. The full text of the license may be found at\r | |
12 | http://opensource.org/licenses/bsd-license.php\r | |
13 | \r | |
14 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
15 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
16 | \r | |
17 | **/\r | |
18 | \r | |
19 | \r | |
20 | #include <PiDxe.h>\r | |
21 | \r | |
22 | #include <Library/BaseLib.h>\r | |
23 | #include <Library/IoLib.h>\r | |
24 | #include <Library/EfiResetSystemLib.h>\r | |
25 | \r | |
26 | \r | |
27 | /**\r | |
28 | Resets the entire platform.\r | |
29 | \r | |
30 | @param ResetType The type of reset to perform.\r | |
31 | @param ResetStatus The status code for the reset.\r | |
32 | @param DataSize The size, in bytes, of WatchdogData.\r | |
33 | @param ResetData For a ResetType of EfiResetCold, EfiResetWarm, or\r | |
34 | EfiResetShutdown the data buffer starts with a Null-terminated\r | |
35 | Unicode string, optionally followed by additional binary data.\r | |
36 | \r | |
37 | **/\r | |
38 | EFI_STATUS\r | |
39 | EFIAPI\r | |
40 | LibResetSystem (\r | |
41 | IN EFI_RESET_TYPE ResetType,\r | |
42 | IN EFI_STATUS ResetStatus,\r | |
43 | IN UINTN DataSize,\r | |
44 | IN CHAR16 *ResetData OPTIONAL\r | |
45 | )\r | |
46 | {\r | |
47 | UINTN Address;\r | |
48 | UINT8 Data;\r | |
49 | \r | |
50 | \r | |
51 | switch (ResetType) {\r | |
52 | case EfiResetCold:\r | |
53 | // system power cycle\r | |
54 | \r | |
55 | // Example using IoLib functions to do IO.\r | |
56 | Address = 0x12345678;\r | |
57 | Data = MmioRead8 (Address);\r | |
58 | MmioWrite8 (Address, Data | 0x01);\r | |
59 | \r | |
60 | // Note this is a bad example asa MmioOr8 (Address, 0x01) does the same thing\r | |
61 | break;\r | |
62 | \r | |
63 | case EfiResetWarm:\r | |
64 | // not a full power cycle, maybe memory stays around. \r | |
65 | // if not support do the same thing as EfiResetCold.\r | |
66 | break;\r | |
67 | \r | |
68 | case EfiResetShutdown:\r | |
69 | // turn off the system.\r | |
70 | // if not support do the same thing as EfiResetCold.\r | |
71 | break;\r | |
72 | \r | |
73 | default:\r | |
74 | return EFI_INVALID_PARAMETER;\r | |
75 | }\r | |
76 | \r | |
77 | //\r | |
78 | // If we reset, we would not have returned...\r | |
79 | //\r | |
80 | return EFI_DEVICE_ERROR;\r | |
81 | }\r | |
82 | \r | |
83 | \r | |
84 | \r | |
85 | /**\r | |
86 | Initialize any infrastructure required for LibResetSystem () to function.\r | |
87 | \r | |
88 | @param ImageHandle The firmware allocated handle for the EFI image.\r | |
89 | @param SystemTable A pointer to the EFI System Table.\r | |
90 | \r | |
91 | @retval EFI_SUCCESS The constructor always returns EFI_SUCCESS.\r | |
92 | \r | |
93 | **/\r | |
94 | EFI_STATUS\r | |
95 | EFIAPI\r | |
96 | LibInitializeResetSystem (\r | |
97 | IN EFI_HANDLE ImageHandle,\r | |
98 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
99 | )\r | |
100 | {\r | |
101 | return EFI_SUCCESS;\r | |
102 | }\r | |
103 | \r |