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3c2dc30d KQ |
1 | /** @file\r |
2 | This driver implements TPM 2.0 definition block in ACPI table and\r | |
3 | populates registered SMI callback functions for Tcg2 physical presence\r | |
4 | and MemoryClear to handle the requests for ACPI method. It needs to be\r | |
5 | used together with Tcg2 MM drivers to exchange information on registered\r | |
6 | SwSmiValue and allocated NVS region address.\r | |
7 | \r | |
8 | Caution: This module requires additional review when modified.\r | |
9 | This driver will have external input - variable and ACPINvs data in SMM mode.\r | |
10 | This external input must be validated carefully to avoid security issue.\r | |
11 | \r | |
12 | Copyright (c) 2015 - 2018, Intel Corporation. All rights reserved.<BR>\r | |
13 | Copyright (c) Microsoft Corporation.\r | |
14 | SPDX-License-Identifier: BSD-2-Clause-Patent\r | |
15 | \r | |
16 | **/\r | |
17 | \r | |
18 | #include <PiDxe.h>\r | |
19 | \r | |
20 | #include <IndustryStandard/Tpm2Acpi.h>\r | |
21 | \r | |
22 | #include <Guid/TpmInstance.h>\r | |
23 | #include <Guid/TpmNvsMm.h>\r | |
24 | #include <Guid/PiSmmCommunicationRegionTable.h>\r | |
25 | \r | |
26 | #include <Protocol/AcpiTable.h>\r | |
27 | #include <Protocol/Tcg2Protocol.h>\r | |
28 | #include <Protocol/MmCommunication.h>\r | |
29 | \r | |
30 | #include <Library/BaseLib.h>\r | |
31 | #include <Library/BaseMemoryLib.h>\r | |
32 | #include <Library/DxeServicesLib.h>\r | |
33 | #include <Library/UefiBootServicesTableLib.h>\r | |
34 | #include <Library/DebugLib.h>\r | |
35 | #include <Library/PcdLib.h>\r | |
36 | #include <Library/PrintLib.h>\r | |
37 | #include <Library/TpmMeasurementLib.h>\r | |
38 | #include <Library/Tpm2DeviceLib.h>\r | |
39 | #include <Library/Tpm2CommandLib.h>\r | |
40 | #include <Library/UefiLib.h>\r | |
59a3ccb0 | 41 | #include <Library/MmUnblockMemoryLib.h>\r |
3c2dc30d KQ |
42 | \r |
43 | //\r | |
44 | // Physical Presence Interface Version supported by Platform\r | |
45 | //\r | |
46 | #define PHYSICAL_PRESENCE_VERSION_TAG "$PV"\r | |
47 | #define PHYSICAL_PRESENCE_VERSION_SIZE 4\r | |
48 | \r | |
49 | //\r | |
50 | // PNP _HID for TPM2 device\r | |
51 | //\r | |
52 | #define TPM_HID_TAG "NNNN0000"\r | |
53 | #define TPM_HID_PNP_SIZE 8\r | |
54 | #define TPM_HID_ACPI_SIZE 9\r | |
55 | \r | |
56 | #define TPM_PRS_RESL "RESL"\r | |
57 | #define TPM_PRS_RESS "RESS"\r | |
58 | #define TPM_PRS_RES_NAME_SIZE 4\r | |
59 | //\r | |
60 | // Minimum PRS resource template size\r | |
61 | // 1 byte for BufferOp\r | |
62 | // 1 byte for PkgLength\r | |
63 | // 2 bytes for BufferSize\r | |
64 | // 12 bytes for Memory32Fixed descriptor\r | |
65 | // 5 bytes for Interrupt descriptor\r | |
66 | // 2 bytes for END Tag\r | |
67 | //\r | |
68 | #define TPM_POS_RES_TEMPLATE_MIN_SIZE (1 + 1 + 2 + 12 + 5 + 2)\r | |
69 | \r | |
70 | //\r | |
71 | // Max Interrupt buffer size for PRS interrupt resource\r | |
72 | // Now support 15 interrupts in maxmum\r | |
73 | //\r | |
74 | #define MAX_PRS_INT_BUF_SIZE (15*4)\r | |
75 | \r | |
76 | #pragma pack(1)\r | |
77 | \r | |
78 | typedef struct {\r | |
79 | EFI_ACPI_DESCRIPTION_HEADER Header;\r | |
80 | // Flags field is replaced in version 4 and above\r | |
81 | // BIT0~15: PlatformClass This field is only valid for version 4 and above\r | |
82 | // BIT16~31: Reserved\r | |
83 | UINT32 Flags;\r | |
84 | UINT64 AddressOfControlArea;\r | |
85 | UINT32 StartMethod;\r | |
86 | UINT8 PlatformSpecificParameters[12]; // size up to 12\r | |
87 | UINT32 Laml; // Optional\r | |
88 | UINT64 Lasa; // Optional\r | |
89 | } EFI_TPM2_ACPI_TABLE_V4;\r | |
90 | \r | |
91 | #pragma pack()\r | |
92 | \r | |
93 | EFI_TPM2_ACPI_TABLE_V4 mTpm2AcpiTemplate = {\r | |
94 | {\r | |
95 | EFI_ACPI_5_0_TRUSTED_COMPUTING_PLATFORM_2_TABLE_SIGNATURE,\r | |
96 | sizeof (mTpm2AcpiTemplate),\r | |
97 | EFI_TPM2_ACPI_TABLE_REVISION,\r | |
98 | //\r | |
99 | // Compiler initializes the remaining bytes to 0\r | |
100 | // These fields should be filled in in production\r | |
101 | //\r | |
102 | },\r | |
103 | 0, // BIT0~15: PlatformClass\r | |
104 | // BIT16~31: Reserved\r | |
105 | 0, // Control Area\r | |
106 | EFI_TPM2_ACPI_TABLE_START_METHOD_TIS, // StartMethod\r | |
107 | };\r | |
108 | \r | |
109 | TCG_NVS *mTcgNvs;\r | |
110 | \r | |
111 | /**\r | |
112 | Find the operation region in TCG ACPI table by given Name and Size,\r | |
113 | and initialize it if the region is found.\r | |
114 | \r | |
115 | @param[in, out] Table The TPM item in ACPI table.\r | |
116 | @param[in] Name The name string to find in TPM table.\r | |
117 | @param[in] Size The size of the region to find.\r | |
118 | \r | |
119 | @return The allocated address for the found region.\r | |
120 | \r | |
121 | **/\r | |
122 | VOID *\r | |
123 | AssignOpRegion (\r | |
124 | EFI_ACPI_DESCRIPTION_HEADER *Table,\r | |
125 | UINT32 Name,\r | |
126 | UINT16 Size\r | |
127 | )\r | |
128 | {\r | |
129 | EFI_STATUS Status;\r | |
130 | AML_OP_REGION_32_8 *OpRegion;\r | |
131 | EFI_PHYSICAL_ADDRESS MemoryAddress;\r | |
132 | \r | |
133 | MemoryAddress = SIZE_4GB - 1;\r | |
134 | \r | |
135 | //\r | |
136 | // Patch some pointers for the ASL code before loading the SSDT.\r | |
137 | //\r | |
138 | for (OpRegion = (AML_OP_REGION_32_8 *) (Table + 1);\r | |
139 | OpRegion <= (AML_OP_REGION_32_8 *) ((UINT8 *) Table + Table->Length);\r | |
140 | OpRegion = (AML_OP_REGION_32_8 *) ((UINT8 *) OpRegion + 1)) {\r | |
141 | if ((OpRegion->OpRegionOp == AML_EXT_REGION_OP) &&\r | |
142 | (OpRegion->NameString == Name) &&\r | |
143 | (OpRegion->DWordPrefix == AML_DWORD_PREFIX) &&\r | |
144 | (OpRegion->BytePrefix == AML_BYTE_PREFIX)) {\r | |
145 | \r | |
146 | Status = gBS->AllocatePages(AllocateMaxAddress, EfiACPIMemoryNVS, EFI_SIZE_TO_PAGES (Size), &MemoryAddress);\r | |
147 | ASSERT_EFI_ERROR (Status);\r | |
148 | ZeroMem ((VOID *)(UINTN)MemoryAddress, Size);\r | |
149 | OpRegion->RegionOffset = (UINT32) (UINTN) MemoryAddress;\r | |
150 | OpRegion->RegionLen = (UINT8) Size;\r | |
59a3ccb0 KQ |
151 | // Request to unblock this region from MM core\r |
152 | Status = MmUnblockMemoryRequest (MemoryAddress, EFI_SIZE_TO_PAGES (Size));\r | |
153 | if (Status != EFI_UNSUPPORTED && EFI_ERROR (Status)) {\r | |
154 | ASSERT_EFI_ERROR (Status);\r | |
155 | }\r | |
3c2dc30d KQ |
156 | break;\r |
157 | }\r | |
158 | }\r | |
159 | \r | |
160 | return (VOID *) (UINTN) MemoryAddress;\r | |
161 | }\r | |
162 | \r | |
163 | /**\r | |
164 | Locate the MM communication buffer and protocol, then use it to exchange information with\r | |
165 | Tcg2StandaloneMmm on NVS address and SMI value.\r | |
166 | \r | |
167 | @param[in, out] TcgNvs The NVS subject to send to MM environment.\r | |
168 | \r | |
169 | @return The status for locating MM common buffer, communicate to MM, etc.\r | |
170 | \r | |
171 | **/\r | |
172 | EFI_STATUS\r | |
173 | EFIAPI\r | |
174 | ExchangeCommonBuffer (\r | |
175 | IN OUT TCG_NVS *TcgNvs\r | |
176 | )\r | |
177 | {\r | |
178 | EFI_STATUS Status;\r | |
179 | EFI_MM_COMMUNICATION_PROTOCOL *MmCommunication;\r | |
180 | EDKII_PI_SMM_COMMUNICATION_REGION_TABLE *PiSmmCommunicationRegionTable;\r | |
181 | EFI_MEMORY_DESCRIPTOR *MmCommMemRegion;\r | |
182 | EFI_MM_COMMUNICATE_HEADER *CommHeader;\r | |
183 | TPM_NVS_MM_COMM_BUFFER *CommBuffer;\r | |
184 | UINTN CommBufferSize;\r | |
185 | UINTN Index;\r | |
186 | \r | |
187 | // Step 0: Sanity check for input argument\r | |
188 | if (TcgNvs == NULL) {\r | |
189 | DEBUG ((DEBUG_ERROR, "%a - Input argument is NULL!\n", __FUNCTION__));\r | |
190 | return EFI_INVALID_PARAMETER;\r | |
191 | }\r | |
192 | \r | |
193 | // Step 1: Grab the common buffer header\r | |
194 | Status = EfiGetSystemConfigurationTable (&gEdkiiPiSmmCommunicationRegionTableGuid, (VOID**) &PiSmmCommunicationRegionTable);\r | |
195 | if (EFI_ERROR (Status)) {\r | |
196 | DEBUG ((DEBUG_ERROR, "%a - Failed to locate SMM communciation common buffer - %r!\n", __FUNCTION__, Status));\r | |
197 | return Status;\r | |
198 | }\r | |
199 | \r | |
200 | // Step 2: Grab one that is large enough to hold TPM_NVS_MM_COMM_BUFFER, the IPL one should be sufficient\r | |
201 | CommBufferSize = 0;\r | |
202 | MmCommMemRegion = (EFI_MEMORY_DESCRIPTOR*) (PiSmmCommunicationRegionTable + 1);\r | |
203 | for (Index = 0; Index < PiSmmCommunicationRegionTable->NumberOfEntries; Index++) {\r | |
204 | if (MmCommMemRegion->Type == EfiConventionalMemory) {\r | |
205 | CommBufferSize = EFI_PAGES_TO_SIZE ((UINTN)MmCommMemRegion->NumberOfPages);\r | |
206 | if (CommBufferSize >= (sizeof (TPM_NVS_MM_COMM_BUFFER) + OFFSET_OF (EFI_MM_COMMUNICATE_HEADER, Data))) {\r | |
207 | break;\r | |
208 | }\r | |
209 | }\r | |
210 | MmCommMemRegion = (EFI_MEMORY_DESCRIPTOR*)((UINT8*)MmCommMemRegion + PiSmmCommunicationRegionTable->DescriptorSize);\r | |
211 | }\r | |
212 | \r | |
213 | if (Index >= PiSmmCommunicationRegionTable->NumberOfEntries) {\r | |
214 | // Could not find one that meets our goal...\r | |
215 | DEBUG ((DEBUG_ERROR, "%a - Could not find a common buffer that is big enough for NVS!\n", __FUNCTION__));\r | |
216 | return EFI_OUT_OF_RESOURCES;\r | |
217 | }\r | |
218 | \r | |
219 | // Step 3: Start to populate contents\r | |
220 | // Step 3.1: MM Communication common header\r | |
221 | CommHeader = (EFI_MM_COMMUNICATE_HEADER *) (UINTN) MmCommMemRegion->PhysicalStart;\r | |
222 | CommBufferSize = sizeof (TPM_NVS_MM_COMM_BUFFER) + OFFSET_OF (EFI_MM_COMMUNICATE_HEADER, Data);\r | |
223 | ZeroMem (CommHeader, CommBufferSize);\r | |
224 | CopyGuid (&CommHeader->HeaderGuid, &gTpmNvsMmGuid);\r | |
225 | CommHeader->MessageLength = sizeof (TPM_NVS_MM_COMM_BUFFER);\r | |
226 | \r | |
227 | // Step 3.2: TPM_NVS_MM_COMM_BUFFER content per our needs\r | |
228 | CommBuffer = (TPM_NVS_MM_COMM_BUFFER *) (CommHeader->Data);\r | |
229 | CommBuffer->Function = TpmNvsMmExchangeInfo;\r | |
230 | CommBuffer->TargetAddress = (EFI_PHYSICAL_ADDRESS) (UINTN) TcgNvs;\r | |
231 | \r | |
232 | // Step 4: Locate the protocol and signal Mmi.\r | |
233 | Status = gBS->LocateProtocol (&gEfiMmCommunicationProtocolGuid, NULL, (VOID**) &MmCommunication);\r | |
234 | if (!EFI_ERROR (Status)) {\r | |
235 | Status = MmCommunication->Communicate (MmCommunication, CommHeader, &CommBufferSize);\r | |
236 | DEBUG ((DEBUG_INFO, "%a - Communicate() = %r\n", __FUNCTION__, Status));\r | |
237 | }\r | |
238 | else {\r | |
239 | DEBUG ((DEBUG_ERROR, "%a - Failed to locate MmCommunication protocol - %r\n", __FUNCTION__, Status));\r | |
240 | return Status;\r | |
241 | }\r | |
242 | \r | |
243 | // Step 5: If everything goes well, populate the channel number\r | |
244 | if (!EFI_ERROR (CommBuffer->ReturnStatus)) {\r | |
245 | // Need to demote to UINT8 according to SMI value definition\r | |
246 | TcgNvs->PhysicalPresence.SoftwareSmi = (UINT8) CommBuffer->RegisteredPpSwiValue;\r | |
247 | TcgNvs->MemoryClear.SoftwareSmi = (UINT8) CommBuffer->RegisteredMcSwiValue;\r | |
248 | DEBUG ((\r | |
249 | DEBUG_INFO,\r | |
250 | "%a Communication returned software SMI value. PP: 0x%x; MC: 0x%x.\n",\r | |
251 | __FUNCTION__,\r | |
252 | TcgNvs->PhysicalPresence.SoftwareSmi,\r | |
253 | TcgNvs->MemoryClear.SoftwareSmi\r | |
254 | ));\r | |
255 | }\r | |
256 | \r | |
257 | return (EFI_STATUS) CommBuffer->ReturnStatus;\r | |
258 | }\r | |
259 | \r | |
260 | /**\r | |
261 | Patch version string of Physical Presence interface supported by platform. The initial string tag in TPM\r | |
262 | ACPI table is "$PV".\r | |
263 | \r | |
264 | @param[in, out] Table The TPM item in ACPI table.\r | |
265 | @param[in] PPVer Version string of Physical Presence interface supported by platform.\r | |
266 | \r | |
267 | @return The allocated address for the found region.\r | |
268 | \r | |
269 | **/\r | |
270 | EFI_STATUS\r | |
271 | UpdatePPVersion (\r | |
272 | EFI_ACPI_DESCRIPTION_HEADER *Table,\r | |
273 | CHAR8 *PPVer\r | |
274 | )\r | |
275 | {\r | |
276 | EFI_STATUS Status;\r | |
277 | UINT8 *DataPtr;\r | |
278 | \r | |
279 | //\r | |
280 | // Patch some pointers for the ASL code before loading the SSDT.\r | |
281 | //\r | |
282 | for (DataPtr = (UINT8 *)(Table + 1);\r | |
283 | DataPtr <= (UINT8 *) ((UINT8 *) Table + Table->Length - PHYSICAL_PRESENCE_VERSION_SIZE);\r | |
284 | DataPtr += 1) {\r | |
285 | if (AsciiStrCmp((CHAR8 *)DataPtr, PHYSICAL_PRESENCE_VERSION_TAG) == 0) {\r | |
286 | Status = AsciiStrCpyS((CHAR8 *)DataPtr, PHYSICAL_PRESENCE_VERSION_SIZE, PPVer);\r | |
287 | DEBUG((DEBUG_INFO, "TPM2 Physical Presence Interface Version update status 0x%x\n", Status));\r | |
288 | return Status;\r | |
289 | }\r | |
290 | }\r | |
291 | \r | |
292 | return EFI_NOT_FOUND;\r | |
293 | }\r | |
294 | \r | |
295 | /**\r | |
296 | Patch interrupt resources returned by TPM _PRS. ResourceTemplate to patch is determined by input\r | |
297 | interrupt buffer size. BufferSize, PkgLength and interrupt descriptor in ByteList need to be patched\r | |
298 | \r | |
299 | @param[in, out] Table The TPM item in ACPI table.\r | |
300 | @param[in] IrqBuffer Input new IRQ buffer.\r | |
301 | @param[in] IrqBuffserSize Input new IRQ buffer size.\r | |
302 | @param[out] IsShortFormPkgLength If _PRS returns Short length Package(ACPI spec 20.2.4).\r | |
303 | \r | |
304 | @return patch status.\r | |
305 | \r | |
306 | **/\r | |
307 | EFI_STATUS\r | |
308 | UpdatePossibleResource (\r | |
309 | IN OUT EFI_ACPI_DESCRIPTION_HEADER *Table,\r | |
310 | IN UINT32 *IrqBuffer,\r | |
311 | IN UINT32 IrqBuffserSize,\r | |
312 | OUT BOOLEAN *IsShortFormPkgLength\r | |
313 | )\r | |
314 | {\r | |
315 | UINT8 *DataPtr;\r | |
316 | UINT8 *DataEndPtr;\r | |
317 | UINT32 NewPkgLength;\r | |
318 | UINT32 OrignalPkgLength;\r | |
319 | \r | |
320 | NewPkgLength = 0;\r | |
321 | OrignalPkgLength = 0;\r | |
322 | DataEndPtr = NULL;\r | |
323 | \r | |
324 | //\r | |
325 | // Follow ACPI spec\r | |
326 | // 6.4.3 Extend Interrupt Descriptor.\r | |
327 | // 19.3.3 ASL Resource Template\r | |
328 | // 20 AML specification\r | |
329 | // to patch TPM ACPI object _PRS returned ResourceTemplate() containing 2 resource descriptors and an auto appended End Tag\r | |
330 | //\r | |
331 | // AML data is organized by following rule.\r | |
332 | // Code need to patch BufferSize and PkgLength and interrupt descriptor in ByteList\r | |
333 | //\r | |
334 | // ============= Buffer ====================\r | |
335 | // DefBuffer := BufferOp PkgLength BufferSize ByteList\r | |
336 | // BufferOp := 0x11\r | |
337 | //\r | |
338 | // ==============PkgLength==================\r | |
339 | // PkgLength := PkgLeadByte |\r | |
340 | // <PkgLeadByte ByteData> |\r | |
341 | // <PkgLeadByte ByteData ByteData> |\r | |
342 | // <PkgLeadByte ByteData ByteData ByteData>\r | |
343 | //\r | |
344 | // PkgLeadByte := <bit 7-6: ByteData count that follows (0-3)>\r | |
345 | // <bit 5-4: Only used if PkgLength <= 63 >\r | |
346 | // <bit 3-0: Least significant package length nybble>\r | |
347 | //\r | |
348 | //==============BufferSize==================\r | |
349 | // BufferSize := Integer\r | |
350 | // Integer := ByteConst|WordConst|DwordConst....\r | |
351 | //\r | |
352 | // ByteConst := BytePrefix ByteData\r | |
353 | //\r | |
354 | //==============ByteList===================\r | |
355 | // ByteList := ByteData ByteList\r | |
356 | //\r | |
357 | //=========================================\r | |
358 | \r | |
359 | //\r | |
360 | // 1. Check TPM_PRS_RESS with PkgLength <=63 can hold the input interrupt number buffer for patching\r | |
361 | //\r | |
362 | for (DataPtr = (UINT8 *)(Table + 1);\r | |
363 | DataPtr < (UINT8 *) ((UINT8 *) Table + Table->Length - (TPM_PRS_RES_NAME_SIZE + TPM_POS_RES_TEMPLATE_MIN_SIZE));\r | |
364 | DataPtr += 1) {\r | |
365 | if (CompareMem(DataPtr, TPM_PRS_RESS, TPM_PRS_RES_NAME_SIZE) == 0) {\r | |
366 | //\r | |
367 | // Jump over object name & BufferOp\r | |
368 | //\r | |
369 | DataPtr += TPM_PRS_RES_NAME_SIZE + 1;\r | |
370 | \r | |
371 | if ((*DataPtr & (BIT7|BIT6)) == 0) {\r | |
372 | OrignalPkgLength = (UINT32)*DataPtr;\r | |
373 | DataEndPtr = DataPtr + OrignalPkgLength;\r | |
374 | \r | |
375 | //\r | |
376 | // Jump over PkgLength = PkgLeadByte only\r | |
377 | //\r | |
378 | NewPkgLength++;\r | |
379 | \r | |
380 | //\r | |
381 | // Jump over BufferSize\r | |
382 | //\r | |
383 | if (*(DataPtr + 1) == AML_BYTE_PREFIX) {\r | |
384 | NewPkgLength += 2;\r | |
385 | } else if (*(DataPtr + 1) == AML_WORD_PREFIX) {\r | |
386 | NewPkgLength += 3;\r | |
387 | } else if (*(DataPtr + 1) == AML_DWORD_PREFIX) {\r | |
388 | NewPkgLength += 5;\r | |
389 | } else {\r | |
390 | ASSERT(FALSE);\r | |
391 | return EFI_UNSUPPORTED;\r | |
392 | }\r | |
393 | } else {\r | |
394 | ASSERT(FALSE);\r | |
395 | return EFI_UNSUPPORTED;\r | |
396 | }\r | |
397 | \r | |
398 | //\r | |
399 | // Include Memory32Fixed Descriptor (12 Bytes) + Interrupt Descriptor header(5 Bytes) + End Tag(2 Bytes)\r | |
400 | //\r | |
401 | NewPkgLength += 19 + IrqBuffserSize;\r | |
402 | if (NewPkgLength > 63) {\r | |
403 | break;\r | |
404 | }\r | |
405 | \r | |
406 | if (NewPkgLength > OrignalPkgLength) {\r | |
407 | ASSERT(FALSE);\r | |
408 | return EFI_INVALID_PARAMETER;\r | |
409 | }\r | |
410 | \r | |
411 | //\r | |
412 | // 1.1 Patch PkgLength\r | |
413 | //\r | |
414 | *DataPtr = (UINT8)NewPkgLength;\r | |
415 | \r | |
416 | //\r | |
417 | // 1.2 Patch BufferSize = sizeof(Memory32Fixed Descriptor + Interrupt Descriptor + End Tag).\r | |
418 | // It is Little endian. So only patch lowest byte of BufferSize due to current interrupt number limit.\r | |
419 | //\r | |
420 | *(DataPtr + 2) = (UINT8)(IrqBuffserSize + 19);\r | |
421 | \r | |
422 | //\r | |
423 | // Notify _PRS to report short formed ResourceTemplate\r | |
424 | //\r | |
425 | *IsShortFormPkgLength = TRUE;\r | |
426 | \r | |
427 | break;\r | |
428 | }\r | |
429 | }\r | |
430 | \r | |
431 | //\r | |
432 | // 2. Use TPM_PRS_RESL with PkgLength > 63 to hold longer input interrupt number buffer for patching\r | |
433 | //\r | |
434 | if (NewPkgLength > 63) {\r | |
435 | NewPkgLength = 0;\r | |
436 | OrignalPkgLength = 0;\r | |
437 | for (DataPtr = (UINT8 *)(Table + 1);\r | |
438 | DataPtr < (UINT8 *) ((UINT8 *) Table + Table->Length - (TPM_PRS_RES_NAME_SIZE + TPM_POS_RES_TEMPLATE_MIN_SIZE));\r | |
439 | DataPtr += 1) {\r | |
440 | if (CompareMem(DataPtr, TPM_PRS_RESL, TPM_PRS_RES_NAME_SIZE) == 0) {\r | |
441 | //\r | |
442 | // Jump over object name & BufferOp\r | |
443 | //\r | |
444 | DataPtr += TPM_PRS_RES_NAME_SIZE + 1;\r | |
445 | \r | |
446 | if ((*DataPtr & (BIT7|BIT6)) != 0) {\r | |
447 | OrignalPkgLength = (UINT32)(*(DataPtr + 1) << 4) + (*DataPtr & 0x0F);\r | |
448 | DataEndPtr = DataPtr + OrignalPkgLength;\r | |
449 | //\r | |
450 | // Jump over PkgLength = PkgLeadByte + ByteData length\r | |
451 | //\r | |
452 | NewPkgLength += 1 + ((*DataPtr & (BIT7|BIT6)) >> 6);\r | |
453 | \r | |
454 | //\r | |
455 | // Jump over BufferSize\r | |
456 | //\r | |
457 | if (*(DataPtr + NewPkgLength) == AML_BYTE_PREFIX) {\r | |
458 | NewPkgLength += 2;\r | |
459 | } else if (*(DataPtr + NewPkgLength) == AML_WORD_PREFIX) {\r | |
460 | NewPkgLength += 3;\r | |
461 | } else if (*(DataPtr + NewPkgLength) == AML_DWORD_PREFIX) {\r | |
462 | NewPkgLength += 5;\r | |
463 | } else {\r | |
464 | ASSERT(FALSE);\r | |
465 | return EFI_UNSUPPORTED;\r | |
466 | }\r | |
467 | } else {\r | |
468 | ASSERT(FALSE);\r | |
469 | return EFI_UNSUPPORTED;\r | |
470 | }\r | |
471 | \r | |
472 | //\r | |
473 | // Include Memory32Fixed Descriptor (12 Bytes) + Interrupt Descriptor header(5 Bytes) + End Tag(2 Bytes)\r | |
474 | //\r | |
475 | NewPkgLength += 19 + IrqBuffserSize;\r | |
476 | \r | |
477 | if (NewPkgLength > OrignalPkgLength) {\r | |
478 | ASSERT(FALSE);\r | |
479 | return EFI_INVALID_PARAMETER;\r | |
480 | }\r | |
481 | \r | |
482 | //\r | |
483 | // 2.1 Patch PkgLength. Only patch PkgLeadByte and first ByteData\r | |
484 | //\r | |
485 | *DataPtr = (UINT8)((*DataPtr) & 0xF0) | (NewPkgLength & 0x0F);\r | |
486 | *(DataPtr + 1) = (UINT8)((NewPkgLength & 0xFF0) >> 4);\r | |
487 | \r | |
488 | //\r | |
489 | // 2.2 Patch BufferSize = sizeof(Memory32Fixed Descriptor + Interrupt Descriptor + End Tag).\r | |
490 | // It is Little endian. Only patch lowest byte of BufferSize due to current interrupt number limit.\r | |
491 | //\r | |
492 | *(DataPtr + 2 + ((*DataPtr & (BIT7|BIT6)) >> 6)) = (UINT8)(IrqBuffserSize + 19);\r | |
493 | \r | |
494 | //\r | |
495 | // Notify _PRS to report long formed ResourceTemplate\r | |
496 | //\r | |
497 | *IsShortFormPkgLength = FALSE;\r | |
498 | break;\r | |
499 | }\r | |
500 | }\r | |
501 | }\r | |
502 | \r | |
503 | if (DataPtr >= (UINT8 *) ((UINT8 *) Table + Table->Length - (TPM_PRS_RES_NAME_SIZE + TPM_POS_RES_TEMPLATE_MIN_SIZE))) {\r | |
504 | return EFI_NOT_FOUND;\r | |
505 | }\r | |
506 | \r | |
507 | //\r | |
508 | // 3. Move DataPtr to Interrupt descriptor header and patch interrupt descriptor.\r | |
509 | // 5 bytes for interrupt descriptor header, 2 bytes for End Tag\r | |
510 | //\r | |
511 | DataPtr += NewPkgLength - (5 + IrqBuffserSize + 2);\r | |
512 | //\r | |
513 | // 3.1 Patch Length bit[7:0] of Interrupt descriptor patch interrupt descriptor\r | |
514 | //\r | |
515 | *(DataPtr + 1) = (UINT8)(2 + IrqBuffserSize);\r | |
516 | //\r | |
517 | // 3.2 Patch Interrupt Table Length\r | |
518 | //\r | |
519 | *(DataPtr + 4) = (UINT8)(IrqBuffserSize / sizeof(UINT32));\r | |
520 | //\r | |
521 | // 3.3 Copy patched InterruptNumBuffer\r | |
522 | //\r | |
523 | CopyMem(DataPtr + 5, IrqBuffer, IrqBuffserSize);\r | |
524 | \r | |
525 | //\r | |
526 | // 4. Jump over Interrupt descriptor and Patch END Tag, set Checksum field to 0\r | |
527 | //\r | |
528 | DataPtr += 5 + IrqBuffserSize;\r | |
529 | *DataPtr = ACPI_END_TAG_DESCRIPTOR;\r | |
530 | *(DataPtr + 1) = 0;\r | |
531 | \r | |
532 | //\r | |
533 | // 5. Jump over new ResourceTemplate. Stuff rest bytes to NOOP\r | |
534 | //\r | |
535 | DataPtr += 2;\r | |
536 | if (DataPtr < DataEndPtr) {\r | |
537 | SetMem(DataPtr, (UINTN)DataEndPtr - (UINTN)DataPtr, AML_NOOP_OP);\r | |
538 | }\r | |
539 | \r | |
540 | return EFI_SUCCESS;\r | |
541 | }\r | |
542 | \r | |
543 | /**\r | |
544 | Patch TPM2 device HID string. The initial string tag in TPM2 ACPI table is "NNN0000".\r | |
545 | \r | |
546 | @param[in, out] Table The TPM2 SSDT ACPI table.\r | |
547 | \r | |
548 | @return HID Update status.\r | |
549 | \r | |
550 | **/\r | |
551 | EFI_STATUS\r | |
552 | UpdateHID (\r | |
553 | EFI_ACPI_DESCRIPTION_HEADER *Table\r | |
554 | )\r | |
555 | {\r | |
556 | EFI_STATUS Status;\r | |
557 | UINT8 *DataPtr;\r | |
558 | CHAR8 Hid[TPM_HID_ACPI_SIZE];\r | |
559 | UINT32 ManufacturerID;\r | |
560 | UINT32 FirmwareVersion1;\r | |
561 | UINT32 FirmwareVersion2;\r | |
562 | BOOLEAN PnpHID;\r | |
563 | \r | |
564 | PnpHID = TRUE;\r | |
565 | \r | |
566 | //\r | |
567 | // Initialize HID with Default PNP string\r | |
568 | //\r | |
569 | ZeroMem(Hid, TPM_HID_ACPI_SIZE);\r | |
570 | \r | |
571 | //\r | |
572 | // Get Manufacturer ID\r | |
573 | //\r | |
574 | Status = Tpm2GetCapabilityManufactureID(&ManufacturerID);\r | |
575 | if (!EFI_ERROR(Status)) {\r | |
576 | DEBUG((DEBUG_INFO, "TPM_PT_MANUFACTURER 0x%08x\n", ManufacturerID));\r | |
577 | //\r | |
578 | // ManufacturerID defined in TCG Vendor ID Registry\r | |
579 | // may tailed with 0x00 or 0x20\r | |
580 | //\r | |
581 | if ((ManufacturerID >> 24) == 0x00 || ((ManufacturerID >> 24) == 0x20)) {\r | |
582 | //\r | |
583 | // HID containing PNP ID "NNN####"\r | |
584 | // NNN is uppercase letter for Vendor ID specified by manufacturer\r | |
585 | //\r | |
586 | CopyMem(Hid, &ManufacturerID, 3);\r | |
587 | } else {\r | |
588 | //\r | |
589 | // HID containing ACP ID "NNNN####"\r | |
590 | // NNNN is uppercase letter for Vendor ID specified by manufacturer\r | |
591 | //\r | |
592 | CopyMem(Hid, &ManufacturerID, 4);\r | |
593 | PnpHID = FALSE;\r | |
594 | }\r | |
595 | } else {\r | |
596 | DEBUG ((DEBUG_ERROR, "Get TPM_PT_MANUFACTURER failed %x!\n", Status));\r | |
597 | ASSERT(FALSE);\r | |
598 | return Status;\r | |
599 | }\r | |
600 | \r | |
601 | Status = Tpm2GetCapabilityFirmwareVersion(&FirmwareVersion1, &FirmwareVersion2);\r | |
602 | if (!EFI_ERROR(Status)) {\r | |
603 | DEBUG((DEBUG_INFO, "TPM_PT_FIRMWARE_VERSION_1 0x%x\n", FirmwareVersion1));\r | |
604 | DEBUG((DEBUG_INFO, "TPM_PT_FIRMWARE_VERSION_2 0x%x\n", FirmwareVersion2));\r | |
605 | //\r | |
606 | // #### is Firmware Version 1\r | |
607 | //\r | |
608 | if (PnpHID) {\r | |
609 | AsciiSPrint(Hid + 3, TPM_HID_PNP_SIZE - 3, "%02d%02d", ((FirmwareVersion1 & 0xFFFF0000) >> 16), (FirmwareVersion1 & 0x0000FFFF));\r | |
610 | } else {\r | |
611 | AsciiSPrint(Hid + 4, TPM_HID_ACPI_SIZE - 4, "%02d%02d", ((FirmwareVersion1 & 0xFFFF0000) >> 16), (FirmwareVersion1 & 0x0000FFFF));\r | |
612 | }\r | |
613 | \r | |
614 | } else {\r | |
615 | DEBUG ((DEBUG_ERROR, "Get TPM_PT_FIRMWARE_VERSION_X failed %x!\n", Status));\r | |
616 | ASSERT(FALSE);\r | |
617 | return Status;\r | |
618 | }\r | |
619 | \r | |
620 | //\r | |
621 | // Patch HID in ASL code before loading the SSDT.\r | |
622 | //\r | |
623 | for (DataPtr = (UINT8 *)(Table + 1);\r | |
624 | DataPtr <= (UINT8 *) ((UINT8 *) Table + Table->Length - TPM_HID_PNP_SIZE);\r | |
625 | DataPtr += 1) {\r | |
626 | if (AsciiStrCmp((CHAR8 *)DataPtr, TPM_HID_TAG) == 0) {\r | |
627 | if (PnpHID) {\r | |
628 | CopyMem(DataPtr, Hid, TPM_HID_PNP_SIZE);\r | |
629 | //\r | |
630 | // if HID is PNP ID, patch the last byte in HID TAG to Noop\r | |
631 | //\r | |
632 | *(DataPtr + TPM_HID_PNP_SIZE) = AML_NOOP_OP;\r | |
633 | } else {\r | |
634 | \r | |
635 | CopyMem(DataPtr, Hid, TPM_HID_ACPI_SIZE);\r | |
636 | }\r | |
637 | DEBUG((DEBUG_INFO, "TPM2 ACPI _HID is patched to %a\n", DataPtr));\r | |
638 | \r | |
639 | return Status;\r | |
640 | }\r | |
641 | }\r | |
642 | \r | |
643 | DEBUG((DEBUG_ERROR, "TPM2 ACPI HID TAG for patch not found!\n"));\r | |
644 | return EFI_NOT_FOUND;\r | |
645 | }\r | |
646 | \r | |
647 | /**\r | |
648 | Initialize and publish TPM items in ACPI table.\r | |
649 | \r | |
650 | @retval EFI_SUCCESS The TCG ACPI table is published successfully.\r | |
651 | @retval Others The TCG ACPI table is not published.\r | |
652 | \r | |
653 | **/\r | |
654 | EFI_STATUS\r | |
655 | PublishAcpiTable (\r | |
656 | VOID\r | |
657 | )\r | |
658 | {\r | |
659 | EFI_STATUS Status;\r | |
660 | EFI_ACPI_TABLE_PROTOCOL *AcpiTable;\r | |
661 | UINTN TableKey;\r | |
662 | EFI_ACPI_DESCRIPTION_HEADER *Table;\r | |
663 | UINTN TableSize;\r | |
664 | UINT32 *PossibleIrqNumBuf;\r | |
665 | UINT32 PossibleIrqNumBufSize;\r | |
666 | BOOLEAN IsShortFormPkgLength;\r | |
667 | \r | |
668 | IsShortFormPkgLength = FALSE;\r | |
669 | \r | |
670 | Status = GetSectionFromFv (\r | |
671 | &gEfiCallerIdGuid,\r | |
672 | EFI_SECTION_RAW,\r | |
673 | 0,\r | |
674 | (VOID **) &Table,\r | |
675 | &TableSize\r | |
676 | );\r | |
677 | ASSERT_EFI_ERROR (Status);\r | |
678 | \r | |
679 | //\r | |
680 | // Measure to PCR[0] with event EV_POST_CODE ACPI DATA.\r | |
681 | // The measurement has to be done before any update.\r | |
682 | // Otherwise, the PCR record would be different after TPM FW update\r | |
683 | // or the PCD configuration change.\r | |
684 | //\r | |
685 | TpmMeasureAndLogData(\r | |
686 | 0,\r | |
687 | EV_POST_CODE,\r | |
688 | EV_POSTCODE_INFO_ACPI_DATA,\r | |
689 | ACPI_DATA_LEN,\r | |
690 | Table,\r | |
691 | TableSize\r | |
692 | );\r | |
693 | \r | |
694 | //\r | |
695 | // Update Table version before measuring it to PCR\r | |
696 | //\r | |
697 | Status = UpdatePPVersion(Table, (CHAR8 *)PcdGetPtr(PcdTcgPhysicalPresenceInterfaceVer));\r | |
698 | ASSERT_EFI_ERROR (Status);\r | |
699 | \r | |
700 | DEBUG ((\r | |
701 | DEBUG_INFO,\r | |
702 | "Current physical presence interface version - %a\n",\r | |
703 | (CHAR8 *) PcdGetPtr(PcdTcgPhysicalPresenceInterfaceVer)\r | |
704 | ));\r | |
705 | \r | |
706 | //\r | |
707 | // Update TPM2 HID after measuring it to PCR\r | |
708 | //\r | |
709 | Status = UpdateHID(Table);\r | |
710 | if (EFI_ERROR(Status)) {\r | |
711 | return Status;\r | |
712 | }\r | |
713 | \r | |
714 | if (PcdGet32(PcdTpm2CurrentIrqNum) != 0) {\r | |
715 | //\r | |
716 | // Patch _PRS interrupt resource only when TPM interrupt is supported\r | |
717 | //\r | |
718 | PossibleIrqNumBuf = (UINT32 *)PcdGetPtr(PcdTpm2PossibleIrqNumBuf);\r | |
719 | PossibleIrqNumBufSize = (UINT32)PcdGetSize(PcdTpm2PossibleIrqNumBuf);\r | |
720 | \r | |
721 | if (PossibleIrqNumBufSize <= MAX_PRS_INT_BUF_SIZE && (PossibleIrqNumBufSize % sizeof(UINT32)) == 0) {\r | |
722 | Status = UpdatePossibleResource(Table, PossibleIrqNumBuf, PossibleIrqNumBufSize, &IsShortFormPkgLength);\r | |
723 | DEBUG ((\r | |
724 | DEBUG_INFO,\r | |
725 | "UpdatePossibleResource status - %x. TPM2 service may not ready in OS.\n",\r | |
726 | Status\r | |
727 | ));\r | |
728 | } else {\r | |
729 | DEBUG ((\r | |
730 | DEBUG_INFO,\r | |
731 | "PcdTpm2PossibleIrqNumBuf size %x is not correct. TPM2 service may not ready in OS.\n",\r | |
732 | PossibleIrqNumBufSize\r | |
733 | ));\r | |
734 | }\r | |
735 | }\r | |
736 | \r | |
737 | ASSERT (Table->OemTableId == SIGNATURE_64 ('T', 'p', 'm', '2', 'T', 'a', 'b', 'l'));\r | |
738 | CopyMem (Table->OemId, PcdGetPtr (PcdAcpiDefaultOemId), sizeof (Table->OemId) );\r | |
739 | mTcgNvs = AssignOpRegion (Table, SIGNATURE_32 ('T', 'N', 'V', 'S'), (UINT16) sizeof (TCG_NVS));\r | |
740 | ASSERT (mTcgNvs != NULL);\r | |
741 | mTcgNvs->TpmIrqNum = PcdGet32(PcdTpm2CurrentIrqNum);\r | |
742 | mTcgNvs->IsShortFormPkgLength = IsShortFormPkgLength;\r | |
743 | \r | |
744 | Status = ExchangeCommonBuffer (mTcgNvs);\r | |
745 | \r | |
746 | //\r | |
747 | // Publish the TPM ACPI table. Table is re-checksummed.\r | |
748 | //\r | |
749 | Status = gBS->LocateProtocol (&gEfiAcpiTableProtocolGuid, NULL, (VOID **) &AcpiTable);\r | |
750 | ASSERT_EFI_ERROR (Status);\r | |
751 | \r | |
752 | TableKey = 0;\r | |
753 | Status = AcpiTable->InstallAcpiTable (\r | |
754 | AcpiTable,\r | |
755 | Table,\r | |
756 | TableSize,\r | |
757 | &TableKey\r | |
758 | );\r | |
759 | ASSERT_EFI_ERROR (Status);\r | |
760 | \r | |
761 | return Status;\r | |
762 | }\r | |
763 | \r | |
764 | /**\r | |
765 | Publish TPM2 ACPI table\r | |
766 | \r | |
767 | @retval EFI_SUCCESS The TPM2 ACPI table is published successfully.\r | |
768 | @retval Others The TPM2 ACPI table is not published.\r | |
769 | \r | |
770 | **/\r | |
771 | EFI_STATUS\r | |
772 | PublishTpm2 (\r | |
773 | VOID\r | |
774 | )\r | |
775 | {\r | |
776 | EFI_STATUS Status;\r | |
777 | EFI_ACPI_TABLE_PROTOCOL *AcpiTable;\r | |
778 | UINTN TableKey;\r | |
779 | UINT64 OemTableId;\r | |
780 | EFI_TPM2_ACPI_CONTROL_AREA *ControlArea;\r | |
781 | TPM2_PTP_INTERFACE_TYPE InterfaceType;\r | |
782 | \r | |
783 | //\r | |
784 | // Measure to PCR[0] with event EV_POST_CODE ACPI DATA.\r | |
785 | // The measurement has to be done before any update.\r | |
786 | // Otherwise, the PCR record would be different after event log update\r | |
787 | // or the PCD configuration change.\r | |
788 | //\r | |
789 | TpmMeasureAndLogData(\r | |
790 | 0,\r | |
791 | EV_POST_CODE,\r | |
792 | EV_POSTCODE_INFO_ACPI_DATA,\r | |
793 | ACPI_DATA_LEN,\r | |
794 | &mTpm2AcpiTemplate,\r | |
795 | mTpm2AcpiTemplate.Header.Length\r | |
796 | );\r | |
797 | \r | |
798 | mTpm2AcpiTemplate.Header.Revision = PcdGet8(PcdTpm2AcpiTableRev);\r | |
799 | DEBUG((DEBUG_INFO, "Tpm2 ACPI table revision is %d\n", mTpm2AcpiTemplate.Header.Revision));\r | |
800 | \r | |
801 | //\r | |
802 | // PlatformClass is only valid for version 4 and above\r | |
803 | // BIT0~15: PlatformClass\r | |
804 | // BIT16~31: Reserved\r | |
805 | //\r | |
806 | if (mTpm2AcpiTemplate.Header.Revision >= EFI_TPM2_ACPI_TABLE_REVISION_4) {\r | |
807 | mTpm2AcpiTemplate.Flags = (mTpm2AcpiTemplate.Flags & 0xFFFF0000) | PcdGet8(PcdTpmPlatformClass);\r | |
808 | DEBUG((DEBUG_INFO, "Tpm2 ACPI table PlatformClass is %d\n", (mTpm2AcpiTemplate.Flags & 0x0000FFFF)));\r | |
809 | }\r | |
810 | \r | |
811 | mTpm2AcpiTemplate.Laml = PcdGet32(PcdTpm2AcpiTableLaml);\r | |
812 | mTpm2AcpiTemplate.Lasa = PcdGet64(PcdTpm2AcpiTableLasa);\r | |
813 | if ((mTpm2AcpiTemplate.Header.Revision < EFI_TPM2_ACPI_TABLE_REVISION_4) ||\r | |
814 | (mTpm2AcpiTemplate.Laml == 0) || (mTpm2AcpiTemplate.Lasa == 0)) {\r | |
815 | //\r | |
816 | // If version is smaller than 4 or Laml/Lasa is not valid, rollback to original Length.\r | |
817 | //\r | |
818 | mTpm2AcpiTemplate.Header.Length = sizeof(EFI_TPM2_ACPI_TABLE);\r | |
819 | }\r | |
820 | \r | |
821 | InterfaceType = PcdGet8(PcdActiveTpmInterfaceType);\r | |
822 | switch (InterfaceType) {\r | |
823 | case Tpm2PtpInterfaceCrb:\r | |
824 | mTpm2AcpiTemplate.StartMethod = EFI_TPM2_ACPI_TABLE_START_METHOD_COMMAND_RESPONSE_BUFFER_INTERFACE;\r | |
825 | mTpm2AcpiTemplate.AddressOfControlArea = PcdGet64 (PcdTpmBaseAddress) + 0x40;\r | |
826 | ControlArea = (EFI_TPM2_ACPI_CONTROL_AREA *)(UINTN)mTpm2AcpiTemplate.AddressOfControlArea;\r | |
827 | ControlArea->CommandSize = 0xF80;\r | |
828 | ControlArea->ResponseSize = 0xF80;\r | |
829 | ControlArea->Command = PcdGet64 (PcdTpmBaseAddress) + 0x80;\r | |
830 | ControlArea->Response = PcdGet64 (PcdTpmBaseAddress) + 0x80;\r | |
831 | break;\r | |
832 | case Tpm2PtpInterfaceFifo:\r | |
833 | case Tpm2PtpInterfaceTis:\r | |
834 | break;\r | |
835 | default:\r | |
836 | DEBUG((DEBUG_ERROR, "TPM2 InterfaceType get error! %d\n", InterfaceType));\r | |
837 | break;\r | |
838 | }\r | |
839 | \r | |
840 | CopyMem (mTpm2AcpiTemplate.Header.OemId, PcdGetPtr (PcdAcpiDefaultOemId), sizeof (mTpm2AcpiTemplate.Header.OemId));\r | |
841 | OemTableId = PcdGet64 (PcdAcpiDefaultOemTableId);\r | |
842 | CopyMem (&mTpm2AcpiTemplate.Header.OemTableId, &OemTableId, sizeof (UINT64));\r | |
843 | mTpm2AcpiTemplate.Header.OemRevision = PcdGet32 (PcdAcpiDefaultOemRevision);\r | |
844 | mTpm2AcpiTemplate.Header.CreatorId = PcdGet32 (PcdAcpiDefaultCreatorId);\r | |
845 | mTpm2AcpiTemplate.Header.CreatorRevision = PcdGet32 (PcdAcpiDefaultCreatorRevision);\r | |
846 | \r | |
847 | //\r | |
848 | // Construct ACPI table\r | |
849 | //\r | |
850 | Status = gBS->LocateProtocol (&gEfiAcpiTableProtocolGuid, NULL, (VOID **) &AcpiTable);\r | |
851 | ASSERT_EFI_ERROR (Status);\r | |
852 | \r | |
853 | Status = AcpiTable->InstallAcpiTable (\r | |
854 | AcpiTable,\r | |
855 | &mTpm2AcpiTemplate,\r | |
856 | mTpm2AcpiTemplate.Header.Length,\r | |
857 | &TableKey\r | |
858 | );\r | |
859 | ASSERT_EFI_ERROR (Status);\r | |
860 | \r | |
861 | return Status;\r | |
862 | }\r | |
863 | \r | |
864 | /**\r | |
865 | The driver's entry point.\r | |
866 | \r | |
867 | It patches and installs ACPI tables used for handling TPM physical presence\r | |
868 | and Memory Clear requests through ACPI method.\r | |
869 | \r | |
870 | @param[in] ImageHandle The firmware allocated handle for the EFI image.\r | |
871 | @param[in] SystemTable A pointer to the EFI System Table.\r | |
872 | \r | |
873 | @retval EFI_SUCCESS The entry point is executed successfully.\r | |
874 | @retval Others Some error occurs when executing this entry point.\r | |
875 | \r | |
876 | **/\r | |
877 | EFI_STATUS\r | |
878 | EFIAPI\r | |
879 | InitializeTcgAcpi (\r | |
880 | IN EFI_HANDLE ImageHandle,\r | |
881 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
882 | )\r | |
883 | {\r | |
884 | EFI_STATUS Status;\r | |
885 | \r | |
886 | if (!CompareGuid (PcdGetPtr(PcdTpmInstanceGuid), &gEfiTpmDeviceInstanceTpm20DtpmGuid)){\r | |
887 | DEBUG ((DEBUG_ERROR, "No TPM2 DTPM instance required!\n"));\r | |
888 | return EFI_UNSUPPORTED;\r | |
889 | }\r | |
890 | \r | |
891 | Status = PublishAcpiTable ();\r | |
892 | ASSERT_EFI_ERROR (Status);\r | |
893 | \r | |
894 | //\r | |
895 | // Set TPM2 ACPI table\r | |
896 | //\r | |
897 | Status = PublishTpm2 ();\r | |
898 | ASSERT_EFI_ERROR (Status);\r | |
899 | \r | |
900 | return EFI_SUCCESS;\r | |
901 | }\r | |
902 | \r |