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1 | /** @file\r |
2 | Reset System Library functions for coreboot\r | |
3 | \r | |
4 | Copyright (c) 2014, 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 <PiDxe.h>\r | |
16 | #include <Library/BaseLib.h>\r | |
17 | #include <Library/DebugLib.h>\r | |
18 | #include <Library/IoLib.h>\r | |
19 | #include <Library/HobLib.h>\r | |
20 | \r | |
21 | #include <Guid/AcpiBoardInfoGuid.h>\r | |
22 | \r | |
23 | VOID\r | |
24 | AcpiPmControl (\r | |
25 | UINTN SuspendType\r | |
26 | )\r | |
27 | {\r | |
28 | EFI_HOB_GUID_TYPE *GuidHob;\r | |
29 | ACPI_BOARD_INFO *pAcpiBoardInfo; \r | |
30 | UINTN PmCtrlReg = 0;\r | |
31 | \r | |
32 | ASSERT (SuspendType <= 7); \r | |
33 | //\r | |
34 | // Find the acpi board information guid hob\r | |
35 | //\r | |
36 | GuidHob = GetFirstGuidHob (&gUefiAcpiBoardInfoGuid);\r | |
37 | ASSERT (GuidHob != NULL);\r | |
38 | pAcpiBoardInfo = (ACPI_BOARD_INFO *)GET_GUID_HOB_DATA (GuidHob); \r | |
39 | \r | |
40 | PmCtrlReg = (UINTN)pAcpiBoardInfo->PmCtrlRegBase; \r | |
41 | IoAndThenOr16 (PmCtrlReg, (UINT16) ~0x3c00, (UINT16) (SuspendType << 10));\r | |
42 | IoOr16 (PmCtrlReg, BIT13);\r | |
43 | CpuDeadLoop ();\r | |
44 | }\r | |
45 | \r | |
46 | /**\r | |
47 | Calling this function causes a system-wide reset. This sets\r | |
48 | all circuitry within the system to its initial state. This type of reset\r | |
49 | is asynchronous to system operation and operates without regard to\r | |
50 | cycle boundaries.\r | |
51 | \r | |
52 | System reset should not return, if it returns, it means the system does\r | |
53 | not support cold reset.\r | |
54 | **/\r | |
55 | VOID\r | |
56 | EFIAPI\r | |
57 | ResetCold (\r | |
58 | VOID\r | |
59 | )\r | |
60 | {\r | |
61 | EFI_HOB_GUID_TYPE *GuidHob;\r | |
62 | ACPI_BOARD_INFO *pAcpiBoardInfo; \r | |
63 | \r | |
64 | //\r | |
65 | // Find the acpi board information guid hob\r | |
66 | //\r | |
67 | GuidHob = GetFirstGuidHob (&gUefiAcpiBoardInfoGuid);\r | |
68 | ASSERT (GuidHob != NULL);\r | |
69 | pAcpiBoardInfo = (ACPI_BOARD_INFO *)GET_GUID_HOB_DATA (GuidHob); \r | |
70 | \r | |
71 | IoWrite8 ((UINTN)pAcpiBoardInfo->ResetRegAddress, pAcpiBoardInfo->ResetValue);\r | |
72 | CpuDeadLoop ();\r | |
73 | }\r | |
74 | \r | |
75 | /**\r | |
76 | Calling this function causes a system-wide initialization. The processors\r | |
77 | are set to their initial state, and pending cycles are not corrupted.\r | |
78 | \r | |
79 | System reset should not return, if it returns, it means the system does\r | |
80 | not support warm reset.\r | |
81 | **/\r | |
82 | VOID\r | |
83 | EFIAPI\r | |
84 | ResetWarm (\r | |
85 | VOID\r | |
86 | )\r | |
87 | {\r | |
88 | EFI_HOB_GUID_TYPE *GuidHob;\r | |
89 | ACPI_BOARD_INFO *pAcpiBoardInfo; \r | |
90 | \r | |
91 | //\r | |
92 | // Find the acpi board information guid hob\r | |
93 | //\r | |
94 | GuidHob = GetFirstGuidHob (&gUefiAcpiBoardInfoGuid);\r | |
95 | ASSERT (GuidHob != NULL);\r | |
96 | pAcpiBoardInfo = (ACPI_BOARD_INFO *)GET_GUID_HOB_DATA (GuidHob); \r | |
97 | \r | |
98 | IoWrite8 ((UINTN)pAcpiBoardInfo->ResetRegAddress, pAcpiBoardInfo->ResetValue);\r | |
99 | CpuDeadLoop ();\r | |
100 | }\r | |
101 | \r | |
102 | /**\r | |
103 | Calling this function causes the system to enter a power state equivalent\r | |
104 | to the ACPI G2/S5 or G3 states.\r | |
105 | \r | |
106 | System shutdown should not return, if it returns, it means the system does\r | |
107 | not support shut down reset.\r | |
108 | **/\r | |
109 | VOID\r | |
110 | EFIAPI\r | |
111 | ResetShutdown (\r | |
112 | VOID\r | |
113 | )\r | |
114 | {\r | |
115 | AcpiPmControl (7);\r | |
116 | ASSERT (FALSE);\r | |
117 | }\r | |
118 | \r | |
119 | \r | |
120 | /**\r | |
121 | Calling this function causes the system to enter a power state for capsule\r | |
122 | update.\r | |
123 | \r | |
124 | Reset update should not return, if it returns, it means the system does\r | |
125 | not support capsule update.\r | |
126 | \r | |
127 | **/\r | |
128 | VOID\r | |
129 | EFIAPI\r | |
130 | EnterS3WithImmediateWake (\r | |
131 | VOID\r | |
132 | )\r | |
133 | {\r | |
134 | AcpiPmControl (5);\r | |
135 | ASSERT (FALSE);\r | |
136 | }\r |