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1 | /*++ @file\r | |
2 | Reset Architectural Protocol implementation.\r | |
3 | \r | |
4 | Copyright (c) 2006 - 2010, 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 | \r | |
17 | #include <Protocol/Reset.h>\r | |
18 | \r | |
19 | #include <Guid/AcpiDescription.h>\r | |
20 | \r | |
21 | #include <Library/BaseLib.h>\r | |
22 | #include <Library/IoLib.h>\r | |
23 | #include <Library/PciLib.h>\r | |
24 | #include <Library/HobLib.h>\r | |
25 | #include <Library/DebugLib.h>\r | |
26 | #include <Library/BaseMemoryLib.h>\r | |
27 | #include <Library/UefiBootServicesTableLib.h>\r | |
28 | \r | |
29 | ///\r | |
30 | /// Handle for the Reset Architectural Protocol\r | |
31 | ///\r | |
32 | EFI_HANDLE mResetHandle = NULL;\r | |
33 | \r | |
34 | ///\r | |
35 | /// Copy of ACPI Description HOB in runtime memory\r | |
36 | ///\r | |
37 | EFI_ACPI_DESCRIPTION mAcpiDescription;\r | |
38 | \r | |
39 | /**\r | |
40 | Reset the system.\r | |
41 | \r | |
42 | @param[in] ResetType Warm or cold\r | |
43 | @param[in] ResetStatus Possible cause of reset\r | |
44 | @param[in] DataSize Size of ResetData in bytes\r | |
45 | @param[in] ResetData Optional Unicode string\r | |
46 | \r | |
47 | **/\r | |
48 | VOID\r | |
49 | EFIAPI\r | |
50 | EfiAcpiResetSystem (\r | |
51 | IN EFI_RESET_TYPE ResetType,\r | |
52 | IN EFI_STATUS ResetStatus,\r | |
53 | IN UINTN DataSize,\r | |
54 | IN VOID *ResetData OPTIONAL\r | |
55 | )\r | |
56 | {\r | |
57 | UINT8 Dev;\r | |
58 | UINT8 Func;\r | |
59 | UINT8 Register;\r | |
60 | \r | |
61 | switch (ResetType) {\r | |
62 | case EfiResetShutdown:\r | |
63 | //\r | |
64 | // 1. Write SLP_TYPa\r | |
65 | //\r | |
66 | if ((mAcpiDescription.PM1a_CNT_BLK.Address != 0) && (mAcpiDescription.SLP_TYPa != 0)) {\r | |
67 | switch (mAcpiDescription.PM1a_CNT_BLK.AddressSpaceId) {\r | |
68 | case EFI_ACPI_3_0_SYSTEM_IO:\r | |
69 | IoAndThenOr16 ((UINTN)mAcpiDescription.PM1a_CNT_BLK.Address, 0xc3ff, (UINT16)(0x2000 | (mAcpiDescription.SLP_TYPa << 10)));\r | |
70 | break;\r | |
71 | case EFI_ACPI_3_0_SYSTEM_MEMORY:\r | |
72 | MmioAndThenOr16 ((UINTN)mAcpiDescription.PM1a_CNT_BLK.Address, 0xc3ff, (UINT16)(0x2000 | (mAcpiDescription.SLP_TYPa << 10)));\r | |
73 | break;\r | |
74 | }\r | |
75 | }\r | |
76 | \r | |
77 | //\r | |
78 | // 2. Write SLP_TYPb\r | |
79 | //\r | |
80 | if ((mAcpiDescription.PM1b_CNT_BLK.Address != 0) && (mAcpiDescription.SLP_TYPb != 0)) {\r | |
81 | switch (mAcpiDescription.PM1b_CNT_BLK.AddressSpaceId) {\r | |
82 | case EFI_ACPI_3_0_SYSTEM_IO:\r | |
83 | IoAndThenOr16 ((UINTN)mAcpiDescription.PM1b_CNT_BLK.Address, 0xc3ff, (UINT16)(0x2000 | (mAcpiDescription.SLP_TYPb << 10)));\r | |
84 | break;\r | |
85 | case EFI_ACPI_3_0_SYSTEM_MEMORY:\r | |
86 | MmioAndThenOr16 ((UINTN)mAcpiDescription.PM1b_CNT_BLK.Address, 0xc3ff, (UINT16)(0x2000 | (mAcpiDescription.SLP_TYPb << 10)));\r | |
87 | break;\r | |
88 | }\r | |
89 | }\r | |
90 | //\r | |
91 | // If Shutdown fails, then let fall through to reset \r | |
92 | //\r | |
93 | case EfiResetWarm:\r | |
94 | case EfiResetCold:\r | |
95 | if ((mAcpiDescription.RESET_REG.Address != 0) &&\r | |
96 | ((mAcpiDescription.RESET_REG.AddressSpaceId == EFI_ACPI_3_0_SYSTEM_IO) ||\r | |
97 | (mAcpiDescription.RESET_REG.AddressSpaceId == EFI_ACPI_3_0_SYSTEM_MEMORY) ||\r | |
98 | (mAcpiDescription.RESET_REG.AddressSpaceId == EFI_ACPI_3_0_PCI_CONFIGURATION_SPACE))) {\r | |
99 | //\r | |
100 | // Use ACPI System Reset\r | |
101 | //\r | |
102 | switch (mAcpiDescription.RESET_REG.AddressSpaceId) {\r | |
103 | case EFI_ACPI_3_0_SYSTEM_IO:\r | |
104 | //\r | |
105 | // Send reset request through I/O port register\r | |
106 | //\r | |
107 | IoWrite8 ((UINTN)mAcpiDescription.RESET_REG.Address, mAcpiDescription.RESET_VALUE);\r | |
108 | //\r | |
109 | // Halt \r | |
110 | //\r | |
111 | CpuDeadLoop ();\r | |
112 | case EFI_ACPI_3_0_SYSTEM_MEMORY:\r | |
113 | //\r | |
114 | // Send reset request through MMIO register\r | |
115 | //\r | |
116 | MmioWrite8 ((UINTN)mAcpiDescription.RESET_REG.Address, mAcpiDescription.RESET_VALUE);\r | |
117 | //\r | |
118 | // Halt \r | |
119 | //\r | |
120 | CpuDeadLoop ();\r | |
121 | case EFI_ACPI_3_0_PCI_CONFIGURATION_SPACE:\r | |
122 | //\r | |
123 | // Send reset request through PCI register\r | |
124 | //\r | |
125 | Register = (UINT8)mAcpiDescription.RESET_REG.Address;\r | |
126 | Func = (UINT8) (RShiftU64 (mAcpiDescription.RESET_REG.Address, 16) & 0x7);\r | |
127 | Dev = (UINT8) (RShiftU64 (mAcpiDescription.RESET_REG.Address, 32) & 0x1F);\r | |
128 | PciWrite8 (PCI_LIB_ADDRESS (0, Dev, Func, Register), mAcpiDescription.RESET_VALUE);\r | |
129 | //\r | |
130 | // Halt \r | |
131 | //\r | |
132 | CpuDeadLoop ();\r | |
133 | }\r | |
134 | }\r | |
135 | \r | |
136 | //\r | |
137 | // If system comes here, means ACPI reset is not supported, so do Legacy System Reset, assume 8042 available\r | |
138 | //\r | |
139 | IoWrite8 (0x64, 0xfe);\r | |
140 | CpuDeadLoop ();\r | |
141 | \r | |
142 | default:\r | |
143 | break;\r | |
144 | }\r | |
145 | \r | |
146 | //\r | |
147 | // Given we should have reset getting here would be bad\r | |
148 | //\r | |
149 | ASSERT (FALSE);\r | |
150 | CpuDeadLoop();\r | |
151 | }\r | |
152 | \r | |
153 | /**\r | |
154 | Initialize the state information for the Reset Architectural Protocol.\r | |
155 | \r | |
156 | @param[in] ImageHandle Image handle of the loaded driver\r | |
157 | @param[in] SystemTable Pointer to the System Table\r | |
158 | \r | |
159 | @retval EFI_SUCCESS Thread can be successfully created\r | |
160 | @retval EFI_UNSUPPORTED Cannot find the info to reset system\r | |
161 | \r | |
162 | **/\r | |
163 | EFI_STATUS\r | |
164 | EFIAPI\r | |
165 | InitializeReset (\r | |
166 | IN EFI_HANDLE ImageHandle,\r | |
167 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
168 | )\r | |
169 | {\r | |
170 | EFI_STATUS Status;\r | |
171 | EFI_HOB_GUID_TYPE *HobAcpiDescription;\r | |
172 | \r | |
173 | //\r | |
174 | // Make sure the Reset Architectural Protocol is not already installed in the system\r | |
175 | //\r | |
176 | ASSERT_PROTOCOL_ALREADY_INSTALLED (NULL, &gEfiResetArchProtocolGuid);\r | |
177 | \r | |
178 | //\r | |
179 | // Get ACPI Description HOB\r | |
180 | //\r | |
181 | HobAcpiDescription = GetFirstGuidHob (&gEfiAcpiDescriptionGuid);\r | |
182 | if (HobAcpiDescription == NULL) {\r | |
183 | return EFI_UNSUPPORTED;\r | |
184 | }\r | |
185 | \r | |
186 | //\r | |
187 | // Copy it to Runtime Memory\r | |
188 | //\r | |
189 | ASSERT (sizeof (EFI_ACPI_DESCRIPTION) == GET_GUID_HOB_DATA_SIZE (HobAcpiDescription));\r | |
190 | CopyMem (&mAcpiDescription, GET_GUID_HOB_DATA (HobAcpiDescription), sizeof (EFI_ACPI_DESCRIPTION));\r | |
191 | \r | |
192 | DEBUG ((DEBUG_INFO, "ACPI Reset Base - %lx\n", mAcpiDescription.RESET_REG.Address));\r | |
193 | DEBUG ((DEBUG_INFO, "ACPI Reset Value - %02x\n", (UINTN)mAcpiDescription.RESET_VALUE));\r | |
194 | DEBUG ((DEBUG_INFO, "IAPC support - %x\n", (UINTN)(mAcpiDescription.IAPC_BOOT_ARCH)));\r | |
195 | \r | |
196 | //\r | |
197 | // Hook the runtime service table\r | |
198 | //\r | |
199 | SystemTable->RuntimeServices->ResetSystem = EfiAcpiResetSystem;\r | |
200 | \r | |
201 | //\r | |
202 | // Install the Reset Architectural Protocol onto a new handle\r | |
203 | //\r | |
204 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
205 | &mResetHandle,\r | |
206 | &gEfiResetArchProtocolGuid, NULL,\r | |
207 | NULL\r | |
208 | );\r | |
209 | ASSERT_EFI_ERROR (Status);\r | |
210 | \r | |
211 | return Status;\r | |
212 | }\r |