]> git.proxmox.com Git - mirror_edk2.git/blame_incremental - SecurityPkg/Tcg/Tcg2Smm/Tcg2Smm.c
projects / mirror_edk2.git / blame_incremental
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (non-incremental) | history | HEAD
SecuritPkg: Tcg2: Fix coding style issue
[mirror_edk2.git] / SecurityPkg / Tcg / Tcg2Smm / Tcg2Smm.c
... / ...
CommitLineData
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
12Copyright (c) 2015 - 2017, Intel Corporation. All rights reserved.<BR>\r
13This program and the accompanying materials \r
14are licensed and made available under the terms and conditions of the BSD License \r
15which accompanies this distribution. The full text of the license may be found at \r
16http://opensource.org/licenses/bsd-license.php\r
17\r
18THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r
19WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
20\r
21**/\r
22\r
23#include "Tcg2Smm.h"\r
24\r
25typedef 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
39PTP_INTERFACE_TYPE\r
40GetPtpInterface (\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
53 if (InterfaceId.Bits.InterfaceType == PTP_INTERFACE_IDENTIFIER_INTERFACE_TYPE_TIS) {\r
54 return PtpInterfaceTis;\r
55 }\r
56\r
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
62\r
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
69\r
70 //\r
71 // No Ptp interface available\r
72 //\r
73 return PtpInterfaceMax;\r
74}\r
75\r
76EFI_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
91EFI_SMM_VARIABLE_PROTOCOL *mSmmVariable;\r
92TCG_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
111EFI_STATUS\r
112EFIAPI\r
113PhysicalPresenceCallback (\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
122 UINT32 OperationRequest;\r
123 UINT32 RequestParameter;\r
124\r
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
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
142 );\r
143 mTcgNvs->PhysicalPresence.Request = OperationRequest;\r
144 mTcgNvs->PhysicalPresence.RequestParameter = RequestParameter;\r
145 } else if (mTcgNvs->PhysicalPresence.Parameter == TCG_ACPI_FUNCTION_GET_USER_CONFIRMATION_STATUS_FOR_REQUEST) {\r
146 mTcgNvs->PhysicalPresence.ReturnCode = Tcg2PhysicalPresenceLibGetUserConfirmationStatusFunction (mTcgNvs->PPRequestUserConfirm);\r
147 }\r
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
170EFI_STATUS\r
171EFIAPI\r
172MemoryClearCallback (\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
234VOID *\r
235AssignOpRegion (\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
270/**\r
271 Patch version string of Physical Presence interface supported by platform. The initial string tag in TPM \r
272ACPI 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
280EFI_STATUS\r
281UpdatePPVersion (\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
295 if (AsciiStrCmp((CHAR8 *)DataPtr, PHYSICAL_PRESENCE_VERSION_TAG) == 0) {\r
296 Status = AsciiStrCpyS((CHAR8 *)DataPtr, PHYSICAL_PRESENCE_VERSION_SIZE, PPVer);\r
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
305/**\r
306 Patch TPM2 device HID string. The initial string tag in TPM2 ACPI table is "NNN0000".\r
307\r
308 @param[in, out] Table The TPM2 SSDT ACPI table.\r
309\r
310 @return HID Update status.\r
311\r
312**/\r
313EFI_STATUS\r
314UpdateHID (\r
315 EFI_ACPI_DESCRIPTION_HEADER *Table\r
316 )\r
317{\r
318 EFI_STATUS Status;\r
319 UINT8 *DataPtr;\r
320 CHAR8 Hid[TPM_HID_ACPI_SIZE];\r
321 UINT32 ManufacturerID;\r
322 UINT32 FirmwareVersion1;\r
323 UINT32 FirmwareVersion2;\r
324 BOOLEAN PnpHID;\r
325\r
326 PnpHID = TRUE;\r
327\r
328 //\r
329 // Initialize HID with Default PNP string\r
330 //\r
331 ZeroMem(Hid, TPM_HID_ACPI_SIZE);\r
332\r
333 //\r
334 // Get Manufacturer ID\r
335 //\r
336 Status = Tpm2GetCapabilityManufactureID(&ManufacturerID);\r
337 if (!EFI_ERROR(Status)) {\r
338 DEBUG((EFI_D_INFO, "TPM_PT_MANUFACTURER 0x%08x\n", ManufacturerID));\r
339 //\r
340 // ManufacturerID defined in TCG Vendor ID Registry \r
341 // may tailed with 0x00 or 0x20\r
342 //\r
343 if ((ManufacturerID >> 24) == 0x00 || ((ManufacturerID >> 24) == 0x20)) {\r
344 //\r
345 // HID containing PNP ID "NNN####"\r
346 // NNN is uppercase letter for Vendor ID specified by manufacturer\r
347 //\r
348 CopyMem(Hid, &ManufacturerID, 3);\r
349 } else {\r
350 //\r
351 // HID containing ACP ID "NNNN####"\r
352 // NNNN is uppercase letter for Vendor ID specified by manufacturer\r
353 //\r
354 CopyMem(Hid, &ManufacturerID, 4);\r
355 PnpHID = FALSE;\r
356 }\r
357 } else {\r
358 DEBUG ((EFI_D_ERROR, "Get TPM_PT_MANUFACTURER failed %x!\n", Status));\r
359 ASSERT(FALSE);\r
360 return Status;\r
361 }\r
362\r
363 Status = Tpm2GetCapabilityFirmwareVersion(&FirmwareVersion1, &FirmwareVersion2);\r
364 if (!EFI_ERROR(Status)) {\r
365 DEBUG((EFI_D_INFO, "TPM_PT_FIRMWARE_VERSION_1 0x%x\n", FirmwareVersion1));\r
366 DEBUG((EFI_D_INFO, "TPM_PT_FIRMWARE_VERSION_2 0x%x\n", FirmwareVersion2));\r
367 //\r
368 // #### is Firmware Version 1\r
369 //\r
370 if (PnpHID) {\r
371 AsciiSPrint(Hid + 3, TPM_HID_PNP_SIZE - 3, "%02d%02d", ((FirmwareVersion1 & 0xFFFF0000) >> 16), (FirmwareVersion1 && 0x0000FFFF));\r
372 } else {\r
373 AsciiSPrint(Hid + 4, TPM_HID_ACPI_SIZE - 4, "%02d%02d", ((FirmwareVersion1 & 0xFFFF0000) >> 16), (FirmwareVersion1 && 0x0000FFFF));\r
374 }\r
375 \r
376 } else {\r
377 DEBUG ((EFI_D_ERROR, "Get TPM_PT_FIRMWARE_VERSION_X failed %x!\n", Status));\r
378 ASSERT(FALSE);\r
379 return Status;\r
380 }\r
381\r
382 //\r
383 // Patch HID in ASL code before loading the SSDT.\r
384 //\r
385 for (DataPtr = (UINT8 *)(Table + 1);\r
386 DataPtr <= (UINT8 *) ((UINT8 *) Table + Table->Length - TPM_HID_PNP_SIZE);\r
387 DataPtr += 1) {\r
388 if (AsciiStrCmp((CHAR8 *)DataPtr, TPM_HID_TAG) == 0) {\r
389 if (PnpHID) {\r
390 CopyMem(DataPtr, Hid, TPM_HID_PNP_SIZE);\r
391 //\r
392 // if HID is PNP ID, patch the last byte in HID TAG to Noop\r
393 //\r
394 *(DataPtr + TPM_HID_PNP_SIZE) = AML_NOOP_OP;\r
395 } else {\r
396\r
397 CopyMem(DataPtr, Hid, TPM_HID_ACPI_SIZE);\r
398 }\r
399 DEBUG((DEBUG_INFO, "TPM2 ACPI _HID is patched to %a\n", DataPtr));\r
400\r
401 return Status;\r
402 }\r
403 }\r
404\r
405 DEBUG((EFI_D_ERROR, "TPM2 ACPI HID TAG for patch not found!\n"));\r
406 return EFI_NOT_FOUND;\r
407}\r
408\r
409/**\r
410 Initialize and publish TPM items in ACPI table.\r
411\r
412 @retval EFI_SUCCESS The TCG ACPI table is published successfully.\r
413 @retval Others The TCG ACPI table is not published.\r
414\r
415**/\r
416EFI_STATUS\r
417PublishAcpiTable (\r
418 VOID\r
419 )\r
420{\r
421 EFI_STATUS Status;\r
422 EFI_ACPI_TABLE_PROTOCOL *AcpiTable;\r
423 UINTN TableKey;\r
424 EFI_ACPI_DESCRIPTION_HEADER *Table;\r
425 UINTN TableSize;\r
426\r
427 Status = GetSectionFromFv (\r
428 &gEfiCallerIdGuid,\r
429 EFI_SECTION_RAW,\r
430 0,\r
431 (VOID **) &Table,\r
432 &TableSize\r
433 );\r
434 ASSERT_EFI_ERROR (Status);\r
435\r
436 //\r
437 // Update Table version before measuring it to PCR\r
438 //\r
439 Status = UpdatePPVersion(Table, (CHAR8 *)PcdGetPtr(PcdTcgPhysicalPresenceInterfaceVer));\r
440 ASSERT_EFI_ERROR (Status);\r
441\r
442 //\r
443 // Update TPM2 HID before measuring it to PCR\r
444 //\r
445 Status = UpdateHID(Table);\r
446 if (EFI_ERROR(Status)) {\r
447 return Status;\r
448 }\r
449\r
450 //\r
451 // Measure to PCR[0] with event EV_POST_CODE ACPI DATA\r
452 //\r
453 TpmMeasureAndLogData(\r
454 0,\r
455 EV_POST_CODE,\r
456 EV_POSTCODE_INFO_ACPI_DATA,\r
457 ACPI_DATA_LEN,\r
458 Table,\r
459 TableSize\r
460 );\r
461\r
462\r
463 ASSERT (Table->OemTableId == SIGNATURE_64 ('T', 'p', 'm', '2', 'T', 'a', 'b', 'l'));\r
464 CopyMem (Table->OemId, PcdGetPtr (PcdAcpiDefaultOemId), sizeof (Table->OemId) );\r
465 mTcgNvs = AssignOpRegion (Table, SIGNATURE_32 ('T', 'N', 'V', 'S'), (UINT16) sizeof (TCG_NVS));\r
466 ASSERT (mTcgNvs != NULL);\r
467\r
468 //\r
469 // Publish the TPM ACPI table. Table is re-checksumed.\r
470 //\r
471 Status = gBS->LocateProtocol (&gEfiAcpiTableProtocolGuid, NULL, (VOID **) &AcpiTable);\r
472 ASSERT_EFI_ERROR (Status);\r
473\r
474 TableKey = 0;\r
475 Status = AcpiTable->InstallAcpiTable (\r
476 AcpiTable,\r
477 Table,\r
478 TableSize,\r
479 &TableKey\r
480 );\r
481 ASSERT_EFI_ERROR (Status);\r
482\r
483 return Status;\r
484}\r
485\r
486/**\r
487 Publish TPM2 ACPI table\r
488\r
489 @retval EFI_SUCCESS The TPM2 ACPI table is published successfully.\r
490 @retval Others The TPM2 ACPI table is not published.\r
491\r
492**/\r
493EFI_STATUS\r
494PublishTpm2 (\r
495 VOID\r
496 )\r
497{\r
498 EFI_STATUS Status;\r
499 EFI_ACPI_TABLE_PROTOCOL *AcpiTable;\r
500 UINTN TableKey;\r
501 UINT64 OemTableId;\r
502 EFI_TPM2_ACPI_CONTROL_AREA *ControlArea;\r
503 PTP_INTERFACE_TYPE InterfaceType;\r
504\r
505 //\r
506 // Measure to PCR[0] with event EV_POST_CODE ACPI DATA\r
507 //\r
508 TpmMeasureAndLogData(\r
509 0,\r
510 EV_POST_CODE,\r
511 EV_POSTCODE_INFO_ACPI_DATA,\r
512 ACPI_DATA_LEN,\r
513 &mTpm2AcpiTemplate,\r
514 sizeof(mTpm2AcpiTemplate)\r
515 );\r
516\r
517 InterfaceType = GetPtpInterface ((VOID *) (UINTN) PcdGet64 (PcdTpmBaseAddress));\r
518 switch (InterfaceType) {\r
519 case PtpInterfaceCrb:\r
520 mTpm2AcpiTemplate.StartMethod = EFI_TPM2_ACPI_TABLE_START_METHOD_COMMAND_RESPONSE_BUFFER_INTERFACE;\r
521 mTpm2AcpiTemplate.AddressOfControlArea = PcdGet64 (PcdTpmBaseAddress) + 0x40;\r
522 ControlArea = (EFI_TPM2_ACPI_CONTROL_AREA *)(UINTN)mTpm2AcpiTemplate.AddressOfControlArea;\r
523 ControlArea->CommandSize = 0xF80;\r
524 ControlArea->ResponseSize = 0xF80;\r
525 ControlArea->Command = PcdGet64 (PcdTpmBaseAddress) + 0x80;\r
526 ControlArea->Response = PcdGet64 (PcdTpmBaseAddress) + 0x80;\r
527 break;\r
528 case PtpInterfaceFifo:\r
529 case PtpInterfaceTis:\r
530 break;\r
531 default:\r
532 DEBUG((EFI_D_ERROR, "TPM2 InterfaceType get error! %d\n", InterfaceType));\r
533 break;\r
534 }\r
535\r
536 CopyMem (mTpm2AcpiTemplate.Header.OemId, PcdGetPtr (PcdAcpiDefaultOemId), sizeof (mTpm2AcpiTemplate.Header.OemId));\r
537 OemTableId = PcdGet64 (PcdAcpiDefaultOemTableId);\r
538 CopyMem (&mTpm2AcpiTemplate.Header.OemTableId, &OemTableId, sizeof (UINT64));\r
539 mTpm2AcpiTemplate.Header.OemRevision = PcdGet32 (PcdAcpiDefaultOemRevision);\r
540 mTpm2AcpiTemplate.Header.CreatorId = PcdGet32 (PcdAcpiDefaultCreatorId);\r
541 mTpm2AcpiTemplate.Header.CreatorRevision = PcdGet32 (PcdAcpiDefaultCreatorRevision);\r
542\r
543 //\r
544 // Construct ACPI table\r
545 //\r
546 Status = gBS->LocateProtocol (&gEfiAcpiTableProtocolGuid, NULL, (VOID **) &AcpiTable);\r
547 ASSERT_EFI_ERROR (Status);\r
548\r
549 Status = AcpiTable->InstallAcpiTable (\r
550 AcpiTable,\r
551 &mTpm2AcpiTemplate,\r
552 sizeof(mTpm2AcpiTemplate),\r
553 &TableKey\r
554 );\r
555 ASSERT_EFI_ERROR (Status);\r
556\r
557 return Status;\r
558}\r
559\r
560/**\r
561 The driver's entry point.\r
562\r
563 It install callbacks for TPM physical presence and MemoryClear, and locate \r
564 SMM variable to be used in the callback function.\r
565\r
566 @param[in] ImageHandle The firmware allocated handle for the EFI image. \r
567 @param[in] SystemTable A pointer to the EFI System Table.\r
568 \r
569 @retval EFI_SUCCESS The entry point is executed successfully.\r
570 @retval Others Some error occurs when executing this entry point.\r
571\r
572**/\r
573EFI_STATUS\r
574EFIAPI\r
575InitializeTcgSmm (\r
576 IN EFI_HANDLE ImageHandle,\r
577 IN EFI_SYSTEM_TABLE *SystemTable\r
578 )\r
579{\r
580 EFI_STATUS Status;\r
581 EFI_SMM_SW_DISPATCH2_PROTOCOL *SwDispatch;\r
582 EFI_SMM_SW_REGISTER_CONTEXT SwContext;\r
583 EFI_HANDLE SwHandle;\r
584\r
585 if (!CompareGuid (PcdGetPtr(PcdTpmInstanceGuid), &gEfiTpmDeviceInstanceTpm20DtpmGuid)){\r
586 DEBUG ((EFI_D_ERROR, "No TPM2 DTPM instance required!\n"));\r
587 return EFI_UNSUPPORTED;\r
588 }\r
589\r
590 Status = PublishAcpiTable ();\r
591 ASSERT_EFI_ERROR (Status);\r
592\r
593 //\r
594 // Get the Sw dispatch protocol and register SMI callback functions.\r
595 //\r
596 Status = gSmst->SmmLocateProtocol (&gEfiSmmSwDispatch2ProtocolGuid, NULL, (VOID**)&SwDispatch);\r
597 ASSERT_EFI_ERROR (Status);\r
598 SwContext.SwSmiInputValue = (UINTN) -1;\r
599 Status = SwDispatch->Register (SwDispatch, PhysicalPresenceCallback, &SwContext, &SwHandle);\r
600 ASSERT_EFI_ERROR (Status);\r
601 if (EFI_ERROR (Status)) {\r
602 return Status;\r
603 }\r
604 mTcgNvs->PhysicalPresence.SoftwareSmi = (UINT8) SwContext.SwSmiInputValue;\r
605\r
606 SwContext.SwSmiInputValue = (UINTN) -1;\r
607 Status = SwDispatch->Register (SwDispatch, MemoryClearCallback, &SwContext, &SwHandle);\r
608 ASSERT_EFI_ERROR (Status);\r
609 if (EFI_ERROR (Status)) {\r
610 return Status;\r
611 }\r
612 mTcgNvs->MemoryClear.SoftwareSmi = (UINT8) SwContext.SwSmiInputValue;\r
613 \r
614 //\r
615 // Locate SmmVariableProtocol.\r
616 //\r
617 Status = gSmst->SmmLocateProtocol (&gEfiSmmVariableProtocolGuid, NULL, (VOID**)&mSmmVariable);\r
618 ASSERT_EFI_ERROR (Status);\r
619\r
620 //\r
621 // Set TPM2 ACPI table\r
622 //\r
623 Status = PublishTpm2 ();\r
624 ASSERT_EFI_ERROR (Status);\r
625\r
626\r
627 return EFI_SUCCESS;\r
628}\r
629\r
EFI Development Kit II mirror for PVE