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Commit | Line | Data |
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0c18794e | 1 | /** @file\r |
2 | It updates TPM items in ACPI table and registers SMI callback\r | |
3 | functions for physical presence and ClearMemory.\r | |
4 | \r | |
dc204d5a JY |
5 | Caution: This module requires additional review when modified.\r |
6 | This driver will have external input - variable and ACPINvs data in SMM mode.\r | |
7 | This external input must be validated carefully to avoid security issue.\r | |
8 | \r | |
9 | PhysicalPresenceCallback() and MemoryClearCallback() will receive untrusted input and do some check.\r | |
10 | \r | |
b3548d32 | 11 | Copyright (c) 2011 - 2018, Intel Corporation. All rights reserved.<BR>\r |
289b714b | 12 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
0c18794e | 13 | \r |
14 | **/\r | |
15 | \r | |
82a1e09c | 16 | #include "TcgSmm.h"\r |
0c18794e | 17 | \r |
18 | EFI_SMM_VARIABLE_PROTOCOL *mSmmVariable;\r | |
19 | TCG_NVS *mTcgNvs;\r | |
20 | \r | |
21 | /**\r | |
22 | Software SMI callback for TPM physical presence which is called from ACPI method.\r | |
23 | \r | |
dc204d5a JY |
24 | Caution: This function may receive untrusted input.\r |
25 | Variable and ACPINvs are external input, so this function will validate\r | |
26 | its data structure to be valid value.\r | |
27 | \r | |
0c18794e | 28 | @param[in] DispatchHandle The unique handle assigned to this handler by SmiHandlerRegister().\r |
29 | @param[in] Context Points to an optional handler context which was specified when the\r | |
30 | handler was registered.\r | |
31 | @param[in, out] CommBuffer A pointer to a collection of data in memory that will\r | |
32 | be conveyed from a non-SMM environment into an SMM environment.\r | |
33 | @param[in, out] CommBufferSize The size of the CommBuffer.\r | |
34 | \r | |
35 | @retval EFI_SUCCESS The interrupt was handled successfully.\r | |
36 | \r | |
37 | **/\r | |
38 | EFI_STATUS\r | |
39 | EFIAPI\r | |
40 | PhysicalPresenceCallback (\r | |
c411b485 MK |
41 | IN EFI_HANDLE DispatchHandle,\r |
42 | IN CONST VOID *Context,\r | |
43 | IN OUT VOID *CommBuffer,\r | |
44 | IN OUT UINTN *CommBufferSize\r | |
0c18794e | 45 | )\r |
46 | {\r | |
c411b485 MK |
47 | EFI_STATUS Status;\r |
48 | UINTN DataSize;\r | |
49 | EFI_PHYSICAL_PRESENCE PpData;\r | |
50 | EFI_PHYSICAL_PRESENCE_FLAGS Flags;\r | |
51 | BOOLEAN RequestConfirmed;\r | |
0c18794e | 52 | \r |
53 | //\r | |
54 | // Get the Physical Presence variable\r | |
55 | //\r | |
56 | DataSize = sizeof (EFI_PHYSICAL_PRESENCE);\r | |
c411b485 MK |
57 | Status = mSmmVariable->SmmGetVariable (\r |
58 | PHYSICAL_PRESENCE_VARIABLE,\r | |
59 | &gEfiPhysicalPresenceGuid,\r | |
60 | NULL,\r | |
61 | &DataSize,\r | |
62 | &PpData\r | |
63 | );\r | |
0c18794e | 64 | \r |
e905fbb0 | 65 | DEBUG ((DEBUG_INFO, "[TPM] PP callback, Parameter = %x\n", mTcgNvs->PhysicalPresence.Parameter));\r |
82a1e09c | 66 | if (mTcgNvs->PhysicalPresence.Parameter == ACPI_FUNCTION_RETURN_REQUEST_RESPONSE_TO_OS) {\r |
4610b23a JY |
67 | if (EFI_ERROR (Status)) {\r |
68 | mTcgNvs->PhysicalPresence.ReturnCode = PP_RETURN_TPM_OPERATION_RESPONSE_FAILURE;\r | |
69 | mTcgNvs->PhysicalPresence.LastRequest = 0;\r | |
70 | mTcgNvs->PhysicalPresence.Response = 0;\r | |
e905fbb0 | 71 | DEBUG ((DEBUG_ERROR, "[TPM] Get PP variable failure! Status = %r\n", Status));\r |
4610b23a JY |
72 | return EFI_SUCCESS;\r |
73 | }\r | |
c411b485 | 74 | \r |
4610b23a | 75 | mTcgNvs->PhysicalPresence.ReturnCode = PP_RETURN_TPM_OPERATION_RESPONSE_SUCCESS;\r |
0c18794e | 76 | mTcgNvs->PhysicalPresence.LastRequest = PpData.LastPPRequest;\r |
77 | mTcgNvs->PhysicalPresence.Response = PpData.PPResponse;\r | |
c411b485 MK |
78 | } else if ( (mTcgNvs->PhysicalPresence.Parameter == ACPI_FUNCTION_SUBMIT_REQUEST_TO_BIOS)\r |
79 | || (mTcgNvs->PhysicalPresence.Parameter == ACPI_FUNCTION_SUBMIT_REQUEST_TO_BIOS_2))\r | |
80 | {\r | |
4610b23a JY |
81 | if (EFI_ERROR (Status)) {\r |
82 | mTcgNvs->PhysicalPresence.ReturnCode = TCG_PP_SUBMIT_REQUEST_TO_PREOS_GENERAL_FAILURE;\r | |
e905fbb0 | 83 | DEBUG ((DEBUG_ERROR, "[TPM] Get PP variable failure! Status = %r\n", Status));\r |
4610b23a JY |
84 | return EFI_SUCCESS;\r |
85 | }\r | |
c411b485 | 86 | \r |
607599bf | 87 | if (mTcgNvs->PhysicalPresence.Request == PHYSICAL_PRESENCE_SET_OPERATOR_AUTH) {\r |
0c18794e | 88 | //\r |
82a1e09c | 89 | // This command requires UI to prompt user for Auth data.\r |
0c18794e | 90 | //\r |
4610b23a | 91 | mTcgNvs->PhysicalPresence.ReturnCode = TCG_PP_SUBMIT_REQUEST_TO_PREOS_NOT_IMPLEMENTED;\r |
0c18794e | 92 | return EFI_SUCCESS;\r |
93 | }\r | |
94 | \r | |
95 | if (PpData.PPRequest != mTcgNvs->PhysicalPresence.Request) {\r | |
c411b485 MK |
96 | PpData.PPRequest = (UINT8)mTcgNvs->PhysicalPresence.Request;\r |
97 | DataSize = sizeof (EFI_PHYSICAL_PRESENCE);\r | |
98 | Status = mSmmVariable->SmmSetVariable (\r | |
99 | PHYSICAL_PRESENCE_VARIABLE,\r | |
100 | &gEfiPhysicalPresenceGuid,\r | |
101 | EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r | |
102 | DataSize,\r | |
103 | &PpData\r | |
104 | );\r | |
0c18794e | 105 | }\r |
106 | \r | |
b3548d32 | 107 | if (EFI_ERROR (Status)) {\r |
4610b23a | 108 | mTcgNvs->PhysicalPresence.ReturnCode = TCG_PP_SUBMIT_REQUEST_TO_PREOS_GENERAL_FAILURE;\r |
0c18794e | 109 | return EFI_SUCCESS;\r |
110 | }\r | |
c411b485 | 111 | \r |
4610b23a JY |
112 | mTcgNvs->PhysicalPresence.ReturnCode = TCG_PP_SUBMIT_REQUEST_TO_PREOS_SUCCESS;\r |
113 | \r | |
114 | if (mTcgNvs->PhysicalPresence.Request >= TCG_PHYSICAL_PRESENCE_VENDOR_SPECIFIC_OPERATION) {\r | |
115 | DataSize = sizeof (EFI_PHYSICAL_PRESENCE_FLAGS);\r | |
c411b485 MK |
116 | Status = mSmmVariable->SmmGetVariable (\r |
117 | PHYSICAL_PRESENCE_FLAGS_VARIABLE,\r | |
118 | &gEfiPhysicalPresenceGuid,\r | |
119 | NULL,\r | |
120 | &DataSize,\r | |
121 | &Flags\r | |
122 | );\r | |
4610b23a JY |
123 | if (EFI_ERROR (Status)) {\r |
124 | Flags.PPFlags = TCG_BIOS_TPM_MANAGEMENT_FLAG_NO_PPI_PROVISION;\r | |
125 | }\r | |
c411b485 | 126 | \r |
4610b23a JY |
127 | mTcgNvs->PhysicalPresence.ReturnCode = TcgPpVendorLibSubmitRequestToPreOSFunction (mTcgNvs->PhysicalPresence.Request, Flags.PPFlags);\r |
128 | }\r | |
82a1e09c | 129 | } else if (mTcgNvs->PhysicalPresence.Parameter == ACPI_FUNCTION_GET_USER_CONFIRMATION_STATUS_FOR_REQUEST) {\r |
4610b23a JY |
130 | if (EFI_ERROR (Status)) {\r |
131 | mTcgNvs->PhysicalPresence.ReturnCode = TCG_PP_GET_USER_CONFIRMATION_BLOCKED_BY_BIOS_CONFIGURATION;\r | |
e905fbb0 | 132 | DEBUG ((DEBUG_ERROR, "[TPM] Get PP variable failure! Status = %r\n", Status));\r |
4610b23a JY |
133 | return EFI_SUCCESS;\r |
134 | }\r | |
c411b485 | 135 | \r |
ed094569 DG |
136 | //\r |
137 | // Get the Physical Presence flags\r | |
138 | //\r | |
4610b23a | 139 | DataSize = sizeof (EFI_PHYSICAL_PRESENCE_FLAGS);\r |
c411b485 MK |
140 | Status = mSmmVariable->SmmGetVariable (\r |
141 | PHYSICAL_PRESENCE_FLAGS_VARIABLE,\r | |
142 | &gEfiPhysicalPresenceGuid,\r | |
143 | NULL,\r | |
144 | &DataSize,\r | |
145 | &Flags\r | |
146 | );\r | |
ed094569 | 147 | if (EFI_ERROR (Status)) {\r |
4610b23a | 148 | mTcgNvs->PhysicalPresence.ReturnCode = TCG_PP_GET_USER_CONFIRMATION_BLOCKED_BY_BIOS_CONFIGURATION;\r |
e905fbb0 | 149 | DEBUG ((DEBUG_ERROR, "[TPM] Get PP flags failure! Status = %r\n", Status));\r |
ed094569 DG |
150 | return EFI_SUCCESS;\r |
151 | }\r | |
152 | \r | |
0c18794e | 153 | RequestConfirmed = FALSE;\r |
154 | \r | |
053f31e3 | 155 | switch (mTcgNvs->PPRequestUserConfirm) {\r |
607599bf | 156 | case PHYSICAL_PRESENCE_ENABLE:\r |
157 | case PHYSICAL_PRESENCE_DISABLE:\r | |
158 | case PHYSICAL_PRESENCE_ACTIVATE:\r | |
159 | case PHYSICAL_PRESENCE_DEACTIVATE:\r | |
160 | case PHYSICAL_PRESENCE_ENABLE_ACTIVATE:\r | |
161 | case PHYSICAL_PRESENCE_DEACTIVATE_DISABLE:\r | |
162 | case PHYSICAL_PRESENCE_SET_OWNER_INSTALL_TRUE:\r | |
163 | case PHYSICAL_PRESENCE_SET_OWNER_INSTALL_FALSE:\r | |
164 | case PHYSICAL_PRESENCE_ENABLE_ACTIVATE_OWNER_TRUE:\r | |
165 | case PHYSICAL_PRESENCE_DEACTIVATE_DISABLE_OWNER_FALSE:\r | |
4610b23a | 166 | if ((Flags.PPFlags & TCG_BIOS_TPM_MANAGEMENT_FLAG_NO_PPI_PROVISION) != 0) {\r |
0c18794e | 167 | RequestConfirmed = TRUE;\r |
168 | }\r | |
c411b485 | 169 | \r |
0c18794e | 170 | break;\r |
171 | \r | |
607599bf | 172 | case PHYSICAL_PRESENCE_CLEAR:\r |
173 | case PHYSICAL_PRESENCE_ENABLE_ACTIVATE_CLEAR:\r | |
4610b23a | 174 | if ((Flags.PPFlags & TCG_BIOS_TPM_MANAGEMENT_FLAG_NO_PPI_CLEAR) != 0) {\r |
0c18794e | 175 | RequestConfirmed = TRUE;\r |
176 | }\r | |
c411b485 | 177 | \r |
0c18794e | 178 | break;\r |
179 | \r | |
607599bf | 180 | case PHYSICAL_PRESENCE_DEFERRED_PP_UNOWNERED_FIELD_UPGRADE:\r |
4610b23a | 181 | if ((Flags.PPFlags & TCG_BIOS_TPM_MANAGEMENT_FLAG_NO_PPI_MAINTENANCE) != 0) {\r |
0c18794e | 182 | RequestConfirmed = TRUE;\r |
183 | }\r | |
c411b485 | 184 | \r |
0c18794e | 185 | break;\r |
186 | \r | |
607599bf | 187 | case PHYSICAL_PRESENCE_ENABLE_ACTIVATE_CLEAR_ENABLE_ACTIVATE:\r |
188 | case PHYSICAL_PRESENCE_CLEAR_ENABLE_ACTIVATE:\r | |
c411b485 | 189 | if (((Flags.PPFlags & TCG_BIOS_TPM_MANAGEMENT_FLAG_NO_PPI_CLEAR) != 0) && ((Flags.PPFlags & TCG_BIOS_TPM_MANAGEMENT_FLAG_NO_PPI_PROVISION) != 0)) {\r |
0c18794e | 190 | RequestConfirmed = TRUE;\r |
191 | }\r | |
c411b485 | 192 | \r |
b3548d32 | 193 | break;\r |
0c18794e | 194 | \r |
607599bf | 195 | case PHYSICAL_PRESENCE_SET_NO_PPI_PROVISION_FALSE:\r |
196 | case PHYSICAL_PRESENCE_SET_NO_PPI_CLEAR_FALSE:\r | |
197 | case PHYSICAL_PRESENCE_SET_NO_PPI_MAINTENANCE_FALSE:\r | |
198 | case PHYSICAL_PRESENCE_NO_ACTION:\r | |
0c18794e | 199 | RequestConfirmed = TRUE;\r |
200 | break;\r | |
201 | \r | |
607599bf | 202 | case PHYSICAL_PRESENCE_SET_OPERATOR_AUTH:\r |
0c18794e | 203 | //\r |
204 | // This command requires UI to prompt user for Auth data\r | |
0c18794e | 205 | //\r |
b3548d32 | 206 | mTcgNvs->PhysicalPresence.ReturnCode = TCG_PP_GET_USER_CONFIRMATION_NOT_IMPLEMENTED;\r |
0c18794e | 207 | return EFI_SUCCESS;\r |
4610b23a JY |
208 | default:\r |
209 | break;\r | |
0c18794e | 210 | }\r |
211 | \r | |
212 | if (RequestConfirmed) {\r | |
4610b23a | 213 | mTcgNvs->PhysicalPresence.ReturnCode = TCG_PP_GET_USER_CONFIRMATION_ALLOWED_AND_PPUSER_NOT_REQUIRED;\r |
0c18794e | 214 | } else {\r |
4610b23a | 215 | mTcgNvs->PhysicalPresence.ReturnCode = TCG_PP_GET_USER_CONFIRMATION_ALLOWED_AND_PPUSER_REQUIRED;\r |
b3548d32 | 216 | }\r |
c411b485 | 217 | \r |
4610b23a JY |
218 | if (mTcgNvs->PhysicalPresence.Request >= TCG_PHYSICAL_PRESENCE_VENDOR_SPECIFIC_OPERATION) {\r |
219 | mTcgNvs->PhysicalPresence.ReturnCode = TcgPpVendorLibGetUserConfirmationStatusFunction (mTcgNvs->PhysicalPresence.Request, Flags.PPFlags);\r | |
220 | }\r | |
b3548d32 | 221 | }\r |
0c18794e | 222 | \r |
223 | return EFI_SUCCESS;\r | |
224 | }\r | |
225 | \r | |
0c18794e | 226 | /**\r |
227 | Software SMI callback for MemoryClear which is called from ACPI method.\r | |
228 | \r | |
dc204d5a JY |
229 | Caution: This function may receive untrusted input.\r |
230 | Variable and ACPINvs are external input, so this function will validate\r | |
231 | its data structure to be valid value.\r | |
232 | \r | |
0c18794e | 233 | @param[in] DispatchHandle The unique handle assigned to this handler by SmiHandlerRegister().\r |
234 | @param[in] Context Points to an optional handler context which was specified when the\r | |
235 | handler was registered.\r | |
236 | @param[in, out] CommBuffer A pointer to a collection of data in memory that will\r | |
237 | be conveyed from a non-SMM environment into an SMM environment.\r | |
238 | @param[in, out] CommBufferSize The size of the CommBuffer.\r | |
239 | \r | |
240 | @retval EFI_SUCCESS The interrupt was handled successfully.\r | |
241 | \r | |
242 | **/\r | |
243 | EFI_STATUS\r | |
244 | EFIAPI\r | |
245 | MemoryClearCallback (\r | |
c411b485 MK |
246 | IN EFI_HANDLE DispatchHandle,\r |
247 | IN CONST VOID *Context,\r | |
248 | IN OUT VOID *CommBuffer,\r | |
249 | IN OUT UINTN *CommBufferSize\r | |
0c18794e | 250 | )\r |
251 | {\r | |
c411b485 MK |
252 | EFI_STATUS Status;\r |
253 | UINTN DataSize;\r | |
254 | UINT8 MorControl;\r | |
0c18794e | 255 | \r |
82a1e09c | 256 | mTcgNvs->MemoryClear.ReturnCode = MOR_REQUEST_SUCCESS;\r |
257 | if (mTcgNvs->MemoryClear.Parameter == ACPI_FUNCTION_DSM_MEMORY_CLEAR_INTERFACE) {\r | |
c411b485 | 258 | MorControl = (UINT8)mTcgNvs->MemoryClear.Request;\r |
82a1e09c | 259 | } else if (mTcgNvs->MemoryClear.Parameter == ACPI_FUNCTION_PTS_CLEAR_MOR_BIT) {\r |
0c18794e | 260 | DataSize = sizeof (UINT8);\r |
c411b485 MK |
261 | Status = mSmmVariable->SmmGetVariable (\r |
262 | MEMORY_OVERWRITE_REQUEST_VARIABLE_NAME,\r | |
263 | &gEfiMemoryOverwriteControlDataGuid,\r | |
264 | NULL,\r | |
265 | &DataSize,\r | |
266 | &MorControl\r | |
267 | );\r | |
0c18794e | 268 | if (EFI_ERROR (Status)) {\r |
8a8c6c96 | 269 | mTcgNvs->MemoryClear.ReturnCode = MOR_REQUEST_GENERAL_FAILURE;\r |
e905fbb0 | 270 | DEBUG ((DEBUG_ERROR, "[TPM] Get MOR variable failure! Status = %r\n", Status));\r |
0c18794e | 271 | return EFI_SUCCESS;\r |
272 | }\r | |
273 | \r | |
274 | if (MOR_CLEAR_MEMORY_VALUE (MorControl) == 0x0) {\r | |
275 | return EFI_SUCCESS;\r | |
276 | }\r | |
c411b485 | 277 | \r |
0c18794e | 278 | MorControl &= ~MOR_CLEAR_MEMORY_BIT_MASK;\r |
831bb137 ZC |
279 | } else {\r |
280 | mTcgNvs->MemoryClear.ReturnCode = MOR_REQUEST_GENERAL_FAILURE;\r | |
e905fbb0 | 281 | DEBUG ((DEBUG_ERROR, "[TPM] MOR Parameter error! Parameter = %x\n", mTcgNvs->MemoryClear.Parameter));\r |
831bb137 | 282 | return EFI_SUCCESS;\r |
0c18794e | 283 | }\r |
284 | \r | |
285 | DataSize = sizeof (UINT8);\r | |
c411b485 MK |
286 | Status = mSmmVariable->SmmSetVariable (\r |
287 | MEMORY_OVERWRITE_REQUEST_VARIABLE_NAME,\r | |
288 | &gEfiMemoryOverwriteControlDataGuid,\r | |
289 | EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r | |
290 | DataSize,\r | |
291 | &MorControl\r | |
292 | );\r | |
b3548d32 | 293 | if (EFI_ERROR (Status)) {\r |
82a1e09c | 294 | mTcgNvs->MemoryClear.ReturnCode = MOR_REQUEST_GENERAL_FAILURE;\r |
e905fbb0 | 295 | DEBUG ((DEBUG_ERROR, "[TPM] Set MOR variable failure! Status = %r\n", Status));\r |
82a1e09c | 296 | }\r |
0c18794e | 297 | \r |
298 | return EFI_SUCCESS;\r | |
299 | }\r | |
300 | \r | |
301 | /**\r | |
302 | Find the operation region in TCG ACPI table by given Name and Size,\r | |
303 | and initialize it if the region is found.\r | |
304 | \r | |
305 | @param[in, out] Table The TPM item in ACPI table.\r | |
306 | @param[in] Name The name string to find in TPM table.\r | |
307 | @param[in] Size The size of the region to find.\r | |
308 | \r | |
309 | @return The allocated address for the found region.\r | |
310 | \r | |
311 | **/\r | |
312 | VOID *\r | |
313 | AssignOpRegion (\r | |
c411b485 MK |
314 | EFI_ACPI_DESCRIPTION_HEADER *Table,\r |
315 | UINT32 Name,\r | |
316 | UINT16 Size\r | |
0c18794e | 317 | )\r |
318 | {\r | |
c411b485 MK |
319 | EFI_STATUS Status;\r |
320 | AML_OP_REGION_32_8 *OpRegion;\r | |
321 | EFI_PHYSICAL_ADDRESS MemoryAddress;\r | |
0c18794e | 322 | \r |
323 | MemoryAddress = SIZE_4GB - 1;\r | |
324 | \r | |
325 | //\r | |
326 | // Patch some pointers for the ASL code before loading the SSDT.\r | |
327 | //\r | |
c411b485 MK |
328 | for (OpRegion = (AML_OP_REGION_32_8 *)(Table + 1);\r |
329 | OpRegion <= (AML_OP_REGION_32_8 *)((UINT8 *)Table + Table->Length);\r | |
330 | OpRegion = (AML_OP_REGION_32_8 *)((UINT8 *)OpRegion + 1))\r | |
331 | {\r | |
b3548d32 | 332 | if ((OpRegion->OpRegionOp == AML_EXT_REGION_OP) &&\r |
0c18794e | 333 | (OpRegion->NameString == Name) &&\r |
0c18794e | 334 | (OpRegion->DWordPrefix == AML_DWORD_PREFIX) &&\r |
c411b485 MK |
335 | (OpRegion->BytePrefix == AML_BYTE_PREFIX))\r |
336 | {\r | |
337 | Status = gBS->AllocatePages (AllocateMaxAddress, EfiACPIMemoryNVS, EFI_SIZE_TO_PAGES (Size), &MemoryAddress);\r | |
0c18794e | 338 | ASSERT_EFI_ERROR (Status);\r |
339 | ZeroMem ((VOID *)(UINTN)MemoryAddress, Size);\r | |
c411b485 MK |
340 | OpRegion->RegionOffset = (UINT32)(UINTN)MemoryAddress;\r |
341 | OpRegion->RegionLen = (UINT8)Size;\r | |
0c18794e | 342 | break;\r |
343 | }\r | |
344 | }\r | |
345 | \r | |
c411b485 | 346 | return (VOID *)(UINTN)MemoryAddress;\r |
0c18794e | 347 | }\r |
348 | \r | |
349 | /**\r | |
350 | Initialize and publish TPM items in ACPI table.\r | |
351 | \r | |
352 | @retval EFI_SUCCESS The TCG ACPI table is published successfully.\r | |
353 | @retval Others The TCG ACPI table is not published.\r | |
354 | \r | |
355 | **/\r | |
356 | EFI_STATUS\r | |
357 | PublishAcpiTable (\r | |
358 | VOID\r | |
359 | )\r | |
360 | {\r | |
c411b485 MK |
361 | EFI_STATUS Status;\r |
362 | EFI_ACPI_TABLE_PROTOCOL *AcpiTable;\r | |
363 | UINTN TableKey;\r | |
364 | EFI_ACPI_DESCRIPTION_HEADER *Table;\r | |
365 | UINTN TableSize;\r | |
0c18794e | 366 | \r |
367 | Status = GetSectionFromFv (\r | |
368 | &gEfiCallerIdGuid,\r | |
369 | EFI_SECTION_RAW,\r | |
370 | 0,\r | |
c411b485 | 371 | (VOID **)&Table,\r |
0c18794e | 372 | &TableSize\r |
373 | );\r | |
374 | ASSERT_EFI_ERROR (Status);\r | |
375 | \r | |
a332cfd3 | 376 | //\r |
377 | // Measure to PCR[0] with event EV_POST_CODE ACPI DATA\r | |
378 | //\r | |
c411b485 | 379 | TpmMeasureAndLogData (\r |
a332cfd3 | 380 | 0,\r |
381 | EV_POST_CODE,\r | |
382 | EV_POSTCODE_INFO_ACPI_DATA,\r | |
383 | ACPI_DATA_LEN,\r | |
384 | Table,\r | |
385 | TableSize\r | |
386 | );\r | |
387 | \r | |
0c18794e | 388 | ASSERT (Table->OemTableId == SIGNATURE_64 ('T', 'c', 'g', 'T', 'a', 'b', 'l', 'e'));\r |
c411b485 MK |
389 | CopyMem (Table->OemId, PcdGetPtr (PcdAcpiDefaultOemId), sizeof (Table->OemId));\r |
390 | mTcgNvs = AssignOpRegion (Table, SIGNATURE_32 ('T', 'N', 'V', 'S'), (UINT16)sizeof (TCG_NVS));\r | |
0c18794e | 391 | ASSERT (mTcgNvs != NULL);\r |
392 | \r | |
393 | //\r | |
394 | // Publish the TPM ACPI table\r | |
395 | //\r | |
c411b485 | 396 | Status = gBS->LocateProtocol (&gEfiAcpiTableProtocolGuid, NULL, (VOID **)&AcpiTable);\r |
0c18794e | 397 | ASSERT_EFI_ERROR (Status);\r |
398 | \r | |
399 | TableKey = 0;\r | |
c411b485 MK |
400 | Status = AcpiTable->InstallAcpiTable (\r |
401 | AcpiTable,\r | |
402 | Table,\r | |
403 | TableSize,\r | |
404 | &TableKey\r | |
405 | );\r | |
0c18794e | 406 | ASSERT_EFI_ERROR (Status);\r |
407 | \r | |
408 | return Status;\r | |
409 | }\r | |
410 | \r | |
411 | /**\r | |
412 | The driver's entry point.\r | |
413 | \r | |
b3548d32 | 414 | It install callbacks for TPM physical presence and MemoryClear, and locate\r |
0c18794e | 415 | SMM variable to be used in the callback function.\r |
416 | \r | |
b3548d32 | 417 | @param[in] ImageHandle The firmware allocated handle for the EFI image.\r |
0c18794e | 418 | @param[in] SystemTable A pointer to the EFI System Table.\r |
b3548d32 | 419 | \r |
0c18794e | 420 | @retval EFI_SUCCESS The entry point is executed successfully.\r |
421 | @retval Others Some error occurs when executing this entry point.\r | |
422 | \r | |
423 | **/\r | |
424 | EFI_STATUS\r | |
425 | EFIAPI\r | |
426 | InitializeTcgSmm (\r | |
c411b485 MK |
427 | IN EFI_HANDLE ImageHandle,\r |
428 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
0c18794e | 429 | )\r |
430 | {\r | |
431 | EFI_STATUS Status;\r | |
432 | EFI_SMM_SW_DISPATCH2_PROTOCOL *SwDispatch;\r | |
433 | EFI_SMM_SW_REGISTER_CONTEXT SwContext;\r | |
434 | EFI_HANDLE SwHandle;\r | |
435 | \r | |
c411b485 | 436 | if (!CompareGuid (PcdGetPtr (PcdTpmInstanceGuid), &gEfiTpmDeviceInstanceTpm12Guid)) {\r |
e905fbb0 | 437 | DEBUG ((DEBUG_ERROR, "No TPM12 instance required!\n"));\r |
c1d93242 JY |
438 | return EFI_UNSUPPORTED;\r |
439 | }\r | |
440 | \r | |
0c18794e | 441 | Status = PublishAcpiTable ();\r |
442 | ASSERT_EFI_ERROR (Status);\r | |
443 | \r | |
444 | //\r | |
445 | // Get the Sw dispatch protocol and register SMI callback functions.\r | |
446 | //\r | |
c411b485 | 447 | Status = gSmst->SmmLocateProtocol (&gEfiSmmSwDispatch2ProtocolGuid, NULL, (VOID **)&SwDispatch);\r |
0c18794e | 448 | ASSERT_EFI_ERROR (Status);\r |
c411b485 MK |
449 | SwContext.SwSmiInputValue = (UINTN)-1;\r |
450 | Status = SwDispatch->Register (SwDispatch, PhysicalPresenceCallback, &SwContext, &SwHandle);\r | |
0c18794e | 451 | ASSERT_EFI_ERROR (Status);\r |
452 | if (EFI_ERROR (Status)) {\r | |
453 | return Status;\r | |
454 | }\r | |
0c18794e | 455 | \r |
c411b485 MK |
456 | mTcgNvs->PhysicalPresence.SoftwareSmi = (UINT8)SwContext.SwSmiInputValue;\r |
457 | \r | |
458 | SwContext.SwSmiInputValue = (UINTN)-1;\r | |
459 | Status = SwDispatch->Register (SwDispatch, MemoryClearCallback, &SwContext, &SwHandle);\r | |
0c18794e | 460 | ASSERT_EFI_ERROR (Status);\r |
461 | if (EFI_ERROR (Status)) {\r | |
462 | return Status;\r | |
463 | }\r | |
c411b485 MK |
464 | \r |
465 | mTcgNvs->MemoryClear.SoftwareSmi = (UINT8)SwContext.SwSmiInputValue;\r | |
b3548d32 | 466 | \r |
0c18794e | 467 | //\r |
468 | // Locate SmmVariableProtocol.\r | |
469 | //\r | |
c411b485 | 470 | Status = gSmst->SmmLocateProtocol (&gEfiSmmVariableProtocolGuid, NULL, (VOID **)&mSmmVariable);\r |
0c18794e | 471 | ASSERT_EFI_ERROR (Status);\r |
472 | \r | |
473 | return EFI_SUCCESS;\r | |
474 | }\r |