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1abfa4ce JY |
1 | /** @file\r |
2 | It updates TPM2 items in ACPI table and registers SMI2 callback\r | |
3 | functions for Tcg2 physical presence, ClearMemory, and sample\r | |
4 | for dTPM StartMethod.\r | |
5 | \r | |
6 | Caution: This module requires additional review when modified.\r | |
7 | This driver will have external input - variable and ACPINvs data in SMM mode.\r | |
8 | This external input must be validated carefully to avoid security issue.\r | |
9 | \r | |
10 | PhysicalPresenceCallback() and MemoryClearCallback() will receive untrusted input and do some check.\r | |
11 | \r | |
d967d6d9 | 12 | Copyright (c) 2015 - 2016, Intel Corporation. All rights reserved.<BR>\r |
1abfa4ce JY |
13 | This program and the accompanying materials \r |
14 | are licensed and made available under the terms and conditions of the BSD License \r | |
15 | which accompanies this distribution. The full text of the license may be found at \r | |
16 | http://opensource.org/licenses/bsd-license.php\r | |
17 | \r | |
18 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r | |
19 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
20 | \r | |
21 | **/\r | |
22 | \r | |
23 | #include "Tcg2Smm.h"\r | |
24 | \r | |
d967d6d9 JY |
25 | typedef enum {\r |
26 | PtpInterfaceTis,\r | |
27 | PtpInterfaceFifo,\r | |
28 | PtpInterfaceCrb,\r | |
29 | PtpInterfaceMax,\r | |
30 | } PTP_INTERFACE_TYPE;\r | |
31 | \r | |
32 | /**\r | |
33 | Return PTP interface type.\r | |
34 | \r | |
35 | @param[in] Register Pointer to PTP register.\r | |
36 | \r | |
37 | @return PTP interface type.\r | |
38 | **/\r | |
39 | PTP_INTERFACE_TYPE\r | |
40 | GetPtpInterface (\r | |
41 | IN VOID *Register\r | |
42 | )\r | |
43 | {\r | |
44 | PTP_CRB_INTERFACE_IDENTIFIER InterfaceId;\r | |
45 | PTP_FIFO_INTERFACE_CAPABILITY InterfaceCapability;\r | |
46 | \r | |
47 | //\r | |
48 | // Check interface id\r | |
49 | //\r | |
50 | InterfaceId.Uint32 = MmioRead32 ((UINTN)&((PTP_CRB_REGISTERS *)Register)->InterfaceId);\r | |
51 | InterfaceCapability.Uint32 = MmioRead32 ((UINTN)&((PTP_FIFO_REGISTERS *)Register)->InterfaceCapability);\r | |
52 | \r | |
3b5624b0 ZC |
53 | if (InterfaceId.Bits.InterfaceType == PTP_INTERFACE_IDENTIFIER_INTERFACE_TYPE_TIS) {\r |
54 | return PtpInterfaceTis;\r | |
55 | }\r | |
56 | \r | |
d967d6d9 JY |
57 | if ((InterfaceId.Bits.InterfaceType == PTP_INTERFACE_IDENTIFIER_INTERFACE_TYPE_CRB) &&\r |
58 | (InterfaceId.Bits.InterfaceVersion == PTP_INTERFACE_IDENTIFIER_INTERFACE_VERSION_CRB) &&\r | |
59 | (InterfaceId.Bits.CapCRB != 0)) {\r | |
60 | return PtpInterfaceCrb;\r | |
61 | }\r | |
3b5624b0 | 62 | \r |
d967d6d9 JY |
63 | if ((InterfaceId.Bits.InterfaceType == PTP_INTERFACE_IDENTIFIER_INTERFACE_TYPE_FIFO) &&\r |
64 | (InterfaceId.Bits.InterfaceVersion == PTP_INTERFACE_IDENTIFIER_INTERFACE_VERSION_FIFO) &&\r | |
65 | (InterfaceId.Bits.CapFIFO != 0) &&\r | |
66 | (InterfaceCapability.Bits.InterfaceVersion == INTERFACE_CAPABILITY_INTERFACE_VERSION_PTP)) {\r | |
67 | return PtpInterfaceFifo;\r | |
68 | }\r | |
3b5624b0 ZC |
69 | \r |
70 | //\r | |
71 | // No Ptp interface available\r | |
72 | //\r | |
73 | return PtpInterfaceMax;\r | |
d967d6d9 JY |
74 | }\r |
75 | \r | |
1abfa4ce JY |
76 | EFI_TPM2_ACPI_TABLE mTpm2AcpiTemplate = {\r |
77 | {\r | |
78 | EFI_ACPI_5_0_TRUSTED_COMPUTING_PLATFORM_2_TABLE_SIGNATURE,\r | |
79 | sizeof (mTpm2AcpiTemplate),\r | |
80 | EFI_TPM2_ACPI_TABLE_REVISION,\r | |
81 | //\r | |
82 | // Compiler initializes the remaining bytes to 0\r | |
83 | // These fields should be filled in in production\r | |
84 | //\r | |
85 | },\r | |
86 | 0, // Flags\r | |
87 | 0, // Control Area\r | |
88 | EFI_TPM2_ACPI_TABLE_START_METHOD_TIS, // StartMethod\r | |
89 | };\r | |
90 | \r | |
91 | EFI_SMM_VARIABLE_PROTOCOL *mSmmVariable;\r | |
92 | TCG_NVS *mTcgNvs;\r | |
93 | \r | |
94 | /**\r | |
95 | Software SMI callback for TPM physical presence which is called from ACPI method.\r | |
96 | \r | |
97 | Caution: This function may receive untrusted input.\r | |
98 | Variable and ACPINvs are external input, so this function will validate\r | |
99 | its data structure to be valid value.\r | |
100 | \r | |
101 | @param[in] DispatchHandle The unique handle assigned to this handler by SmiHandlerRegister().\r | |
102 | @param[in] Context Points to an optional handler context which was specified when the\r | |
103 | handler was registered.\r | |
104 | @param[in, out] CommBuffer A pointer to a collection of data in memory that will\r | |
105 | be conveyed from a non-SMM environment into an SMM environment.\r | |
106 | @param[in, out] CommBufferSize The size of the CommBuffer.\r | |
107 | \r | |
108 | @retval EFI_SUCCESS The interrupt was handled successfully.\r | |
109 | \r | |
110 | **/\r | |
111 | EFI_STATUS\r | |
112 | EFIAPI\r | |
113 | PhysicalPresenceCallback (\r | |
114 | IN EFI_HANDLE DispatchHandle,\r | |
115 | IN CONST VOID *Context,\r | |
116 | IN OUT VOID *CommBuffer,\r | |
117 | IN OUT UINTN *CommBufferSize\r | |
118 | )\r | |
119 | {\r | |
120 | UINT32 MostRecentRequest;\r | |
121 | UINT32 Response;\r | |
edb0fda2 ZC |
122 | UINT32 OperationRequest;\r |
123 | UINT32 RequestParameter;\r | |
124 | \r | |
1abfa4ce JY |
125 | \r |
126 | if (mTcgNvs->PhysicalPresence.Parameter == TCG_ACPI_FUNCTION_RETURN_REQUEST_RESPONSE_TO_OS) {\r | |
127 | mTcgNvs->PhysicalPresence.ReturnCode = Tcg2PhysicalPresenceLibReturnOperationResponseToOsFunction (\r | |
128 | &MostRecentRequest,\r | |
129 | &Response\r | |
130 | );\r | |
131 | mTcgNvs->PhysicalPresence.LastRequest = MostRecentRequest;\r | |
132 | mTcgNvs->PhysicalPresence.Response = Response;\r | |
133 | return EFI_SUCCESS;\r | |
134 | } else if ((mTcgNvs->PhysicalPresence.Parameter == TCG_ACPI_FUNCTION_SUBMIT_REQUEST_TO_BIOS) \r | |
135 | || (mTcgNvs->PhysicalPresence.Parameter == TCG_ACPI_FUNCTION_SUBMIT_REQUEST_TO_BIOS_2)) {\r | |
edb0fda2 ZC |
136 | \r |
137 | OperationRequest = mTcgNvs->PhysicalPresence.Request;\r | |
138 | RequestParameter = mTcgNvs->PhysicalPresence.RequestParameter;\r | |
139 | mTcgNvs->PhysicalPresence.ReturnCode = Tcg2PhysicalPresenceLibSubmitRequestToPreOSFunctionEx (\r | |
140 | &OperationRequest,\r | |
141 | &RequestParameter\r | |
1abfa4ce | 142 | );\r |
edb0fda2 ZC |
143 | mTcgNvs->PhysicalPresence.Request = OperationRequest;\r |
144 | mTcgNvs->PhysicalPresence.RequestParameter = RequestParameter;\r | |
1abfa4ce | 145 | } else if (mTcgNvs->PhysicalPresence.Parameter == TCG_ACPI_FUNCTION_GET_USER_CONFIRMATION_STATUS_FOR_REQUEST) {\r |
053f31e3 ZC |
146 | mTcgNvs->PhysicalPresence.ReturnCode = Tcg2PhysicalPresenceLibGetUserConfirmationStatusFunction (mTcgNvs->PPRequestUserConfirm);\r |
147 | }\r | |
1abfa4ce JY |
148 | \r |
149 | return EFI_SUCCESS;\r | |
150 | }\r | |
151 | \r | |
152 | \r | |
153 | /**\r | |
154 | Software SMI callback for MemoryClear which is called from ACPI method.\r | |
155 | \r | |
156 | Caution: This function may receive untrusted input.\r | |
157 | Variable and ACPINvs are external input, so this function will validate\r | |
158 | its data structure to be valid value.\r | |
159 | \r | |
160 | @param[in] DispatchHandle The unique handle assigned to this handler by SmiHandlerRegister().\r | |
161 | @param[in] Context Points to an optional handler context which was specified when the\r | |
162 | handler was registered.\r | |
163 | @param[in, out] CommBuffer A pointer to a collection of data in memory that will\r | |
164 | be conveyed from a non-SMM environment into an SMM environment.\r | |
165 | @param[in, out] CommBufferSize The size of the CommBuffer.\r | |
166 | \r | |
167 | @retval EFI_SUCCESS The interrupt was handled successfully.\r | |
168 | \r | |
169 | **/\r | |
170 | EFI_STATUS\r | |
171 | EFIAPI\r | |
172 | MemoryClearCallback (\r | |
173 | IN EFI_HANDLE DispatchHandle,\r | |
174 | IN CONST VOID *Context,\r | |
175 | IN OUT VOID *CommBuffer,\r | |
176 | IN OUT UINTN *CommBufferSize\r | |
177 | )\r | |
178 | {\r | |
179 | EFI_STATUS Status;\r | |
180 | UINTN DataSize;\r | |
181 | UINT8 MorControl;\r | |
182 | \r | |
183 | mTcgNvs->MemoryClear.ReturnCode = MOR_REQUEST_SUCCESS;\r | |
184 | if (mTcgNvs->MemoryClear.Parameter == ACPI_FUNCTION_DSM_MEMORY_CLEAR_INTERFACE) {\r | |
185 | MorControl = (UINT8) mTcgNvs->MemoryClear.Request;\r | |
186 | } else if (mTcgNvs->MemoryClear.Parameter == ACPI_FUNCTION_PTS_CLEAR_MOR_BIT) {\r | |
187 | DataSize = sizeof (UINT8);\r | |
188 | Status = mSmmVariable->SmmGetVariable (\r | |
189 | MEMORY_OVERWRITE_REQUEST_VARIABLE_NAME,\r | |
190 | &gEfiMemoryOverwriteControlDataGuid,\r | |
191 | NULL,\r | |
192 | &DataSize,\r | |
193 | &MorControl\r | |
194 | );\r | |
195 | if (EFI_ERROR (Status)) {\r | |
196 | mTcgNvs->MemoryClear.ReturnCode = MOR_REQUEST_GENERAL_FAILURE;\r | |
197 | DEBUG ((EFI_D_ERROR, "[TPM] Get MOR variable failure! Status = %r\n", Status));\r | |
198 | return EFI_SUCCESS;\r | |
199 | }\r | |
200 | \r | |
201 | if (MOR_CLEAR_MEMORY_VALUE (MorControl) == 0x0) {\r | |
202 | return EFI_SUCCESS;\r | |
203 | }\r | |
204 | MorControl &= ~MOR_CLEAR_MEMORY_BIT_MASK;\r | |
205 | }\r | |
206 | \r | |
207 | DataSize = sizeof (UINT8);\r | |
208 | Status = mSmmVariable->SmmSetVariable (\r | |
209 | MEMORY_OVERWRITE_REQUEST_VARIABLE_NAME,\r | |
210 | &gEfiMemoryOverwriteControlDataGuid,\r | |
211 | EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r | |
212 | DataSize,\r | |
213 | &MorControl\r | |
214 | );\r | |
215 | if (EFI_ERROR (Status)) { \r | |
216 | mTcgNvs->MemoryClear.ReturnCode = MOR_REQUEST_GENERAL_FAILURE;\r | |
217 | DEBUG ((EFI_D_ERROR, "[TPM] Set MOR variable failure! Status = %r\n", Status));\r | |
218 | }\r | |
219 | \r | |
220 | return EFI_SUCCESS;\r | |
221 | }\r | |
222 | \r | |
223 | /**\r | |
224 | Find the operation region in TCG ACPI table by given Name and Size,\r | |
225 | and initialize it if the region is found.\r | |
226 | \r | |
227 | @param[in, out] Table The TPM item in ACPI table.\r | |
228 | @param[in] Name The name string to find in TPM table.\r | |
229 | @param[in] Size The size of the region to find.\r | |
230 | \r | |
231 | @return The allocated address for the found region.\r | |
232 | \r | |
233 | **/\r | |
234 | VOID *\r | |
235 | AssignOpRegion (\r | |
236 | EFI_ACPI_DESCRIPTION_HEADER *Table,\r | |
237 | UINT32 Name,\r | |
238 | UINT16 Size\r | |
239 | )\r | |
240 | {\r | |
241 | EFI_STATUS Status;\r | |
242 | AML_OP_REGION_32_8 *OpRegion;\r | |
243 | EFI_PHYSICAL_ADDRESS MemoryAddress;\r | |
244 | \r | |
245 | MemoryAddress = SIZE_4GB - 1;\r | |
246 | \r | |
247 | //\r | |
248 | // Patch some pointers for the ASL code before loading the SSDT.\r | |
249 | //\r | |
250 | for (OpRegion = (AML_OP_REGION_32_8 *) (Table + 1);\r | |
251 | OpRegion <= (AML_OP_REGION_32_8 *) ((UINT8 *) Table + Table->Length);\r | |
252 | OpRegion = (AML_OP_REGION_32_8 *) ((UINT8 *) OpRegion + 1)) {\r | |
253 | if ((OpRegion->OpRegionOp == AML_EXT_REGION_OP) && \r | |
254 | (OpRegion->NameString == Name) &&\r | |
255 | (OpRegion->DWordPrefix == AML_DWORD_PREFIX) &&\r | |
256 | (OpRegion->BytePrefix == AML_BYTE_PREFIX)) {\r | |
257 | \r | |
258 | Status = gBS->AllocatePages(AllocateMaxAddress, EfiACPIMemoryNVS, EFI_SIZE_TO_PAGES (Size), &MemoryAddress);\r | |
259 | ASSERT_EFI_ERROR (Status);\r | |
260 | ZeroMem ((VOID *)(UINTN)MemoryAddress, Size);\r | |
261 | OpRegion->RegionOffset = (UINT32) (UINTN) MemoryAddress;\r | |
262 | OpRegion->RegionLen = (UINT8) Size;\r | |
263 | break;\r | |
264 | }\r | |
265 | }\r | |
266 | \r | |
267 | return (VOID *) (UINTN) MemoryAddress;\r | |
268 | }\r | |
269 | \r | |
cd643013 ZC |
270 | /**\r |
271 | Patch version string of Physical Presence interface supported by platform. The initial string tag in TPM \r | |
272 | ACPI table is "$PV".\r | |
273 | \r | |
274 | @param[in, out] Table The TPM item in ACPI table.\r | |
275 | @param[in] PPVer Version string of Physical Presence interface supported by platform.\r | |
276 | \r | |
277 | @return The allocated address for the found region.\r | |
278 | \r | |
279 | **/\r | |
280 | EFI_STATUS\r | |
281 | UpdatePPVersion (\r | |
282 | EFI_ACPI_DESCRIPTION_HEADER *Table,\r | |
283 | CHAR8 *PPVer\r | |
284 | )\r | |
285 | {\r | |
286 | EFI_STATUS Status;\r | |
287 | UINT8 *DataPtr;\r | |
288 | \r | |
289 | //\r | |
290 | // Patch some pointers for the ASL code before loading the SSDT.\r | |
291 | //\r | |
292 | for (DataPtr = (UINT8 *)(Table + 1);\r | |
293 | DataPtr <= (UINT8 *) ((UINT8 *) Table + Table->Length - PHYSICAL_PRESENCE_VERSION_SIZE);\r | |
294 | DataPtr += 1) {\r | |
0c687d02 ZC |
295 | if (AsciiStrCmp((CHAR8 *)DataPtr, PHYSICAL_PRESENCE_VERSION_TAG) == 0) {\r |
296 | Status = AsciiStrCpyS((CHAR8 *)DataPtr, PHYSICAL_PRESENCE_VERSION_SIZE, PPVer);\r | |
cd643013 ZC |
297 | DEBUG((EFI_D_INFO, "TPM2 Physical Presence Interface Version update status 0x%x\n", Status));\r |
298 | return Status;\r | |
299 | }\r | |
300 | }\r | |
301 | \r | |
302 | return EFI_NOT_FOUND;\r | |
303 | }\r | |
304 | \r | |
1abfa4ce JY |
305 | /**\r |
306 | Initialize and publish TPM items in ACPI table.\r | |
307 | \r | |
308 | @retval EFI_SUCCESS The TCG ACPI table is published successfully.\r | |
309 | @retval Others The TCG ACPI table is not published.\r | |
310 | \r | |
311 | **/\r | |
312 | EFI_STATUS\r | |
313 | PublishAcpiTable (\r | |
314 | VOID\r | |
315 | )\r | |
316 | {\r | |
317 | EFI_STATUS Status;\r | |
318 | EFI_ACPI_TABLE_PROTOCOL *AcpiTable;\r | |
319 | UINTN TableKey;\r | |
320 | EFI_ACPI_DESCRIPTION_HEADER *Table;\r | |
321 | UINTN TableSize;\r | |
322 | \r | |
323 | Status = GetSectionFromFv (\r | |
324 | &gEfiCallerIdGuid,\r | |
325 | EFI_SECTION_RAW,\r | |
326 | 0,\r | |
327 | (VOID **) &Table,\r | |
328 | &TableSize\r | |
329 | );\r | |
330 | ASSERT_EFI_ERROR (Status);\r | |
331 | \r | |
cd643013 ZC |
332 | //\r |
333 | // Update Table version before measuring it to PCR\r | |
334 | //\r | |
335 | Status = UpdatePPVersion(Table, (CHAR8 *)PcdGetPtr(PcdTcgPhysicalPresenceInterfaceVer));\r | |
336 | ASSERT_EFI_ERROR (Status);\r | |
1abfa4ce JY |
337 | \r |
338 | //\r | |
339 | // Measure to PCR[0] with event EV_POST_CODE ACPI DATA\r | |
340 | //\r | |
341 | TpmMeasureAndLogData(\r | |
342 | 0,\r | |
343 | EV_POST_CODE,\r | |
344 | EV_POSTCODE_INFO_ACPI_DATA,\r | |
345 | ACPI_DATA_LEN,\r | |
346 | Table,\r | |
347 | TableSize\r | |
348 | );\r | |
349 | \r | |
350 | \r | |
351 | ASSERT (Table->OemTableId == SIGNATURE_64 ('T', 'p', 'm', '2', 'T', 'a', 'b', 'l'));\r | |
352 | CopyMem (Table->OemId, PcdGetPtr (PcdAcpiDefaultOemId), sizeof (Table->OemId) );\r | |
353 | mTcgNvs = AssignOpRegion (Table, SIGNATURE_32 ('T', 'N', 'V', 'S'), (UINT16) sizeof (TCG_NVS));\r | |
354 | ASSERT (mTcgNvs != NULL);\r | |
355 | \r | |
356 | //\r | |
cd643013 | 357 | // Publish the TPM ACPI table. Table is re-checksumed.\r |
1abfa4ce JY |
358 | //\r |
359 | Status = gBS->LocateProtocol (&gEfiAcpiTableProtocolGuid, NULL, (VOID **) &AcpiTable);\r | |
360 | ASSERT_EFI_ERROR (Status);\r | |
361 | \r | |
362 | TableKey = 0;\r | |
363 | Status = AcpiTable->InstallAcpiTable (\r | |
364 | AcpiTable,\r | |
365 | Table,\r | |
366 | TableSize,\r | |
367 | &TableKey\r | |
368 | );\r | |
369 | ASSERT_EFI_ERROR (Status);\r | |
370 | \r | |
371 | return Status;\r | |
372 | }\r | |
373 | \r | |
374 | /**\r | |
375 | Publish TPM2 ACPI table\r | |
376 | \r | |
377 | @retval EFI_SUCCESS The TPM2 ACPI table is published successfully.\r | |
378 | @retval Others The TPM2 ACPI table is not published.\r | |
379 | \r | |
380 | **/\r | |
381 | EFI_STATUS\r | |
382 | PublishTpm2 (\r | |
383 | VOID\r | |
384 | )\r | |
385 | {\r | |
386 | EFI_STATUS Status;\r | |
387 | EFI_ACPI_TABLE_PROTOCOL *AcpiTable;\r | |
388 | UINTN TableKey;\r | |
389 | UINT64 OemTableId;\r | |
d967d6d9 JY |
390 | EFI_TPM2_ACPI_CONTROL_AREA *ControlArea;\r |
391 | PTP_INTERFACE_TYPE InterfaceType;\r | |
1abfa4ce JY |
392 | \r |
393 | //\r | |
394 | // Measure to PCR[0] with event EV_POST_CODE ACPI DATA\r | |
395 | //\r | |
396 | TpmMeasureAndLogData(\r | |
397 | 0,\r | |
398 | EV_POST_CODE,\r | |
399 | EV_POSTCODE_INFO_ACPI_DATA,\r | |
400 | ACPI_DATA_LEN,\r | |
401 | &mTpm2AcpiTemplate,\r | |
402 | sizeof(mTpm2AcpiTemplate)\r | |
403 | );\r | |
404 | \r | |
d967d6d9 JY |
405 | InterfaceType = GetPtpInterface ((VOID *) (UINTN) PcdGet64 (PcdTpmBaseAddress));\r |
406 | switch (InterfaceType) {\r | |
407 | case PtpInterfaceCrb:\r | |
408 | mTpm2AcpiTemplate.StartMethod = EFI_TPM2_ACPI_TABLE_START_METHOD_COMMAND_RESPONSE_BUFFER_INTERFACE;\r | |
409 | mTpm2AcpiTemplate.AddressOfControlArea = PcdGet64 (PcdTpmBaseAddress) + 0x40;\r | |
410 | ControlArea = (EFI_TPM2_ACPI_CONTROL_AREA *)(UINTN)mTpm2AcpiTemplate.AddressOfControlArea;\r | |
411 | ControlArea->CommandSize = 0xF80;\r | |
412 | ControlArea->ResponseSize = 0xF80;\r | |
413 | ControlArea->Command = PcdGet64 (PcdTpmBaseAddress) + 0x80;\r | |
414 | ControlArea->Response = PcdGet64 (PcdTpmBaseAddress) + 0x80;\r | |
415 | break;\r | |
416 | case PtpInterfaceFifo:\r | |
417 | case PtpInterfaceTis:\r | |
418 | break;\r | |
419 | default:\r | |
3b5624b0 | 420 | DEBUG((EFI_D_ERROR, "TPM2 InterfaceType get error! %d\n", InterfaceType));\r |
d967d6d9 JY |
421 | break;\r |
422 | }\r | |
423 | \r | |
1abfa4ce JY |
424 | CopyMem (mTpm2AcpiTemplate.Header.OemId, PcdGetPtr (PcdAcpiDefaultOemId), sizeof (mTpm2AcpiTemplate.Header.OemId));\r |
425 | OemTableId = PcdGet64 (PcdAcpiDefaultOemTableId);\r | |
426 | CopyMem (&mTpm2AcpiTemplate.Header.OemTableId, &OemTableId, sizeof (UINT64));\r | |
427 | mTpm2AcpiTemplate.Header.OemRevision = PcdGet32 (PcdAcpiDefaultOemRevision);\r | |
428 | mTpm2AcpiTemplate.Header.CreatorId = PcdGet32 (PcdAcpiDefaultCreatorId);\r | |
429 | mTpm2AcpiTemplate.Header.CreatorRevision = PcdGet32 (PcdAcpiDefaultCreatorRevision);\r | |
430 | \r | |
431 | //\r | |
432 | // Construct ACPI table\r | |
433 | //\r | |
434 | Status = gBS->LocateProtocol (&gEfiAcpiTableProtocolGuid, NULL, (VOID **) &AcpiTable);\r | |
435 | ASSERT_EFI_ERROR (Status);\r | |
436 | \r | |
437 | Status = AcpiTable->InstallAcpiTable (\r | |
438 | AcpiTable,\r | |
439 | &mTpm2AcpiTemplate,\r | |
440 | sizeof(mTpm2AcpiTemplate),\r | |
441 | &TableKey\r | |
442 | );\r | |
443 | ASSERT_EFI_ERROR (Status);\r | |
444 | \r | |
445 | return Status;\r | |
446 | }\r | |
447 | \r | |
448 | /**\r | |
449 | The driver's entry point.\r | |
450 | \r | |
451 | It install callbacks for TPM physical presence and MemoryClear, and locate \r | |
452 | SMM variable to be used in the callback function.\r | |
453 | \r | |
454 | @param[in] ImageHandle The firmware allocated handle for the EFI image. \r | |
455 | @param[in] SystemTable A pointer to the EFI System Table.\r | |
456 | \r | |
457 | @retval EFI_SUCCESS The entry point is executed successfully.\r | |
458 | @retval Others Some error occurs when executing this entry point.\r | |
459 | \r | |
460 | **/\r | |
461 | EFI_STATUS\r | |
462 | EFIAPI\r | |
463 | InitializeTcgSmm (\r | |
464 | IN EFI_HANDLE ImageHandle,\r | |
465 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
466 | )\r | |
467 | {\r | |
468 | EFI_STATUS Status;\r | |
469 | EFI_SMM_SW_DISPATCH2_PROTOCOL *SwDispatch;\r | |
470 | EFI_SMM_SW_REGISTER_CONTEXT SwContext;\r | |
471 | EFI_HANDLE SwHandle;\r | |
472 | \r | |
473 | if (!CompareGuid (PcdGetPtr(PcdTpmInstanceGuid), &gEfiTpmDeviceInstanceTpm20DtpmGuid)){\r | |
474 | DEBUG ((EFI_D_ERROR, "No TPM2 DTPM instance required!\n"));\r | |
475 | return EFI_UNSUPPORTED;\r | |
476 | }\r | |
477 | \r | |
478 | Status = PublishAcpiTable ();\r | |
479 | ASSERT_EFI_ERROR (Status);\r | |
480 | \r | |
481 | //\r | |
482 | // Get the Sw dispatch protocol and register SMI callback functions.\r | |
483 | //\r | |
484 | Status = gSmst->SmmLocateProtocol (&gEfiSmmSwDispatch2ProtocolGuid, NULL, (VOID**)&SwDispatch);\r | |
485 | ASSERT_EFI_ERROR (Status);\r | |
486 | SwContext.SwSmiInputValue = (UINTN) -1;\r | |
487 | Status = SwDispatch->Register (SwDispatch, PhysicalPresenceCallback, &SwContext, &SwHandle);\r | |
488 | ASSERT_EFI_ERROR (Status);\r | |
489 | if (EFI_ERROR (Status)) {\r | |
490 | return Status;\r | |
491 | }\r | |
492 | mTcgNvs->PhysicalPresence.SoftwareSmi = (UINT8) SwContext.SwSmiInputValue;\r | |
493 | \r | |
494 | SwContext.SwSmiInputValue = (UINTN) -1;\r | |
495 | Status = SwDispatch->Register (SwDispatch, MemoryClearCallback, &SwContext, &SwHandle);\r | |
496 | ASSERT_EFI_ERROR (Status);\r | |
497 | if (EFI_ERROR (Status)) {\r | |
498 | return Status;\r | |
499 | }\r | |
500 | mTcgNvs->MemoryClear.SoftwareSmi = (UINT8) SwContext.SwSmiInputValue;\r | |
501 | \r | |
502 | //\r | |
503 | // Locate SmmVariableProtocol.\r | |
504 | //\r | |
505 | Status = gSmst->SmmLocateProtocol (&gEfiSmmVariableProtocolGuid, NULL, (VOID**)&mSmmVariable);\r | |
506 | ASSERT_EFI_ERROR (Status);\r | |
507 | \r | |
508 | //\r | |
509 | // Set TPM2 ACPI table\r | |
510 | //\r | |
511 | Status = PublishTpm2 ();\r | |
512 | ASSERT_EFI_ERROR (Status);\r | |
513 | \r | |
514 | \r | |
515 | return EFI_SUCCESS;\r | |
516 | }\r | |
517 | \r |