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1 | /** @file\r |
| 2 | Reset System Library functions for OVMF\r |
| 3 | \r |
| 4 | Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>\r |
| 5 | This program and the accompanying materials\r |
| 6 | are licensed and made available under the terms and conditions of the BSD License\r |
| 7 | which accompanies this distribution. The full text of the license may be found at\r |
| 8 | http://opensource.org/licenses/bsd-license.php\r |
| 9 | \r |
| 10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r |
| 11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r |
| 12 | \r |
| 13 | **/\r |
| 14 | \r |
| 15 | #include <Base.h>\r |
| 16 | \r |
| 17 | #include <Library/BaseLib.h>\r |
| 18 | #include <Library/DebugLib.h>\r |
| 19 | #include <Library/IoLib.h>\r |
| 20 | \r |
| 21 | VOID\r |
| 22 | AcpiPmControl (\r |
| 23 | UINTN SuspendType\r |
| 24 | )\r |
| 25 | {\r |
| 26 | ASSERT (SuspendType < 6);\r |
| 27 | \r |
| 46316448 |
28 | IoAndThenOr16 (0x404, (UINT16) ~0x3c00, (UINT16) (SuspendType << 10));\r |
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29 | IoOr16 (0x404, BIT13);\r |
| 30 | CpuDeadLoop ();\r |
| 31 | }\r |
| 32 | \r |
| 33 | /**\r |
| 34 | Calling this function causes a system-wide reset. This sets\r |
| 35 | all circuitry within the system to its initial state. This type of reset\r |
| 36 | is asynchronous to system operation and operates without regard to\r |
| 37 | cycle boundaries.\r |
| 38 | \r |
| 39 | System reset should not return, if it returns, it means the system does\r |
| 40 | not support cold reset.\r |
| 41 | **/\r |
| 42 | VOID\r |
| 43 | EFIAPI\r |
| 44 | ResetCold (\r |
| 45 | VOID\r |
| 46 | )\r |
| 47 | {\r |
| 48 | IoWrite8 (0x64, 0xfe);\r |
| 49 | }\r |
| 50 | \r |
| 51 | /**\r |
| 52 | Calling this function causes a system-wide initialization. The processors\r |
| 53 | are set to their initial state, and pending cycles are not corrupted.\r |
| 54 | \r |
| 55 | System reset should not return, if it returns, it means the system does\r |
| 56 | not support warm reset.\r |
| 57 | **/\r |
| 58 | VOID\r |
| 59 | EFIAPI\r |
| 60 | ResetWarm (\r |
| 61 | VOID\r |
| 62 | )\r |
| 63 | {\r |
| 64 | IoWrite8 (0x64, 0xfe);\r |
| 65 | }\r |
| 66 | \r |
| 67 | /**\r |
| 68 | Calling this function causes the system to enter a power state equivalent\r |
| 69 | to the ACPI G2/S5 or G3 states.\r |
| 70 | \r |
| 71 | System shutdown should not return, if it returns, it means the system does\r |
| 72 | not support shut down reset.\r |
| 73 | **/\r |
| 74 | VOID\r |
| 75 | EFIAPI\r |
| 76 | ResetShutdown (\r |
| 77 | VOID\r |
| 78 | )\r |
| 79 | {\r |
| 80 | AcpiPmControl (0);\r |
| 81 | ASSERT (FALSE);\r |
| 82 | }\r |
| 83 | \r |
| 84 | \r |
| 85 | /**\r |
| 86 | Calling this function causes the system to enter a power state for capsule\r |
| 87 | update.\r |
| 88 | \r |
| 89 | Reset update should not return, if it returns, it means the system does\r |
| 90 | not support capsule update.\r |
| 91 | \r |
| 92 | **/\r |
| 93 | VOID\r |
| 94 | EFIAPI\r |
| 95 | EnterS3WithImmediateWake (\r |
| 96 | VOID\r |
| 97 | )\r |
| 98 | {\r |
| 99 | AcpiPmControl (1);\r |
| 100 | ASSERT (FALSE);\r |
| 101 | }\r |
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