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1abfa4ce JY |
1 | /** @file\r |
2 | Initialize TPM2 device and measure FVs before handing off control to DXE.\r | |
3 | \r | |
4 | Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>\r | |
5 | This program and the accompanying materials \r | |
6 | are licensed and made available under the terms and conditions of the BSD License \r | |
7 | which accompanies this distribution. The full text of the license may be found at \r | |
8 | http://opensource.org/licenses/bsd-license.php\r | |
9 | \r | |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
12 | \r | |
13 | **/\r | |
14 | \r | |
15 | #include <PiPei.h>\r | |
16 | \r | |
17 | #include <IndustryStandard/UefiTcgPlatform.h>\r | |
18 | #include <Ppi/FirmwareVolumeInfo.h>\r | |
19 | #include <Ppi/FirmwareVolumeInfo2.h>\r | |
20 | #include <Ppi/LockPhysicalPresence.h>\r | |
21 | #include <Ppi/TpmInitialized.h>\r | |
22 | #include <Ppi/FirmwareVolume.h>\r | |
23 | #include <Ppi/EndOfPeiPhase.h>\r | |
24 | #include <Ppi/FirmwareVolumeInfoMeasurementExcluded.h>\r | |
25 | \r | |
26 | #include <Guid/TcgEventHob.h>\r | |
27 | #include <Guid/MeasuredFvHob.h>\r | |
28 | #include <Guid/TpmInstance.h>\r | |
29 | \r | |
30 | #include <Library/DebugLib.h>\r | |
31 | #include <Library/BaseMemoryLib.h>\r | |
32 | #include <Library/PeiServicesLib.h>\r | |
33 | #include <Library/PeimEntryPoint.h>\r | |
34 | #include <Library/Tpm2CommandLib.h>\r | |
35 | #include <Library/Tpm2DeviceLib.h>\r | |
36 | #include <Library/HashLib.h>\r | |
37 | #include <Library/HobLib.h>\r | |
38 | #include <Library/PcdLib.h>\r | |
39 | #include <Library/PeiServicesTablePointerLib.h>\r | |
40 | #include <Protocol/Tcg2Protocol.h>\r | |
41 | #include <Library/PerformanceLib.h>\r | |
42 | #include <Library/MemoryAllocationLib.h>\r | |
43 | #include <Library/ReportStatusCodeLib.h>\r | |
44 | #include <Library/Tcg2PhysicalPresenceLib.h>\r | |
45 | \r | |
46 | #define PERF_ID_TCG2_PEI 0x3080\r | |
47 | \r | |
48 | typedef struct {\r | |
49 | EFI_GUID *EventGuid;\r | |
50 | EFI_TCG2_EVENT_LOG_FORMAT LogFormat;\r | |
51 | } TCG2_EVENT_INFO_STRUCT;\r | |
52 | \r | |
53 | TCG2_EVENT_INFO_STRUCT mTcg2EventInfo[] = {\r | |
54 | {&gTcgEventEntryHobGuid, EFI_TCG2_EVENT_LOG_FORMAT_TCG_1_2},\r | |
55 | {&gTcgEvent2EntryHobGuid, EFI_TCG2_EVENT_LOG_FORMAT_TCG_2},\r | |
56 | };\r | |
57 | \r | |
58 | BOOLEAN mImageInMemory = FALSE;\r | |
59 | EFI_PEI_FILE_HANDLE mFileHandle;\r | |
60 | \r | |
61 | EFI_PEI_PPI_DESCRIPTOR mTpmInitializedPpiList = {\r | |
62 | EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST,\r | |
63 | &gPeiTpmInitializedPpiGuid,\r | |
64 | NULL\r | |
65 | };\r | |
66 | \r | |
67 | EFI_PEI_PPI_DESCRIPTOR mTpmInitializationDonePpiList = {\r | |
68 | EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST,\r | |
69 | &gPeiTpmInitializationDonePpiGuid,\r | |
70 | NULL\r | |
71 | };\r | |
72 | \r | |
73 | EFI_PLATFORM_FIRMWARE_BLOB *mMeasuredBaseFvInfo;\r | |
74 | UINT32 mMeasuredBaseFvIndex = 0;\r | |
75 | \r | |
76 | EFI_PLATFORM_FIRMWARE_BLOB *mMeasuredChildFvInfo;\r | |
77 | UINT32 mMeasuredChildFvIndex = 0;\r | |
78 | \r | |
79 | /**\r | |
80 | Measure and record the Firmware Volum Information once FvInfoPPI install.\r | |
81 | \r | |
82 | @param[in] PeiServices An indirect pointer to the EFI_PEI_SERVICES table published by the PEI Foundation.\r | |
83 | @param[in] NotifyDescriptor Address of the notification descriptor data structure.\r | |
84 | @param[in] Ppi Address of the PPI that was installed.\r | |
85 | \r | |
86 | @retval EFI_SUCCESS The FV Info is measured and recorded to TPM.\r | |
87 | @return Others Fail to measure FV.\r | |
88 | \r | |
89 | **/\r | |
90 | EFI_STATUS\r | |
91 | EFIAPI\r | |
92 | FirmwareVolmeInfoPpiNotifyCallback (\r | |
93 | IN EFI_PEI_SERVICES **PeiServices,\r | |
94 | IN EFI_PEI_NOTIFY_DESCRIPTOR *NotifyDescriptor,\r | |
95 | IN VOID *Ppi\r | |
96 | );\r | |
97 | \r | |
98 | /**\r | |
99 | Record all measured Firmware Volum Information into a Guid Hob\r | |
100 | \r | |
101 | @param[in] PeiServices An indirect pointer to the EFI_PEI_SERVICES table published by the PEI Foundation.\r | |
102 | @param[in] NotifyDescriptor Address of the notification descriptor data structure.\r | |
103 | @param[in] Ppi Address of the PPI that was installed.\r | |
104 | \r | |
105 | @retval EFI_SUCCESS The FV Info is measured and recorded to TPM.\r | |
106 | @return Others Fail to measure FV.\r | |
107 | \r | |
108 | **/\r | |
109 | EFI_STATUS\r | |
110 | EFIAPI\r | |
111 | EndofPeiSignalNotifyCallBack (\r | |
112 | IN EFI_PEI_SERVICES **PeiServices,\r | |
113 | IN EFI_PEI_NOTIFY_DESCRIPTOR *NotifyDescriptor,\r | |
114 | IN VOID *Ppi\r | |
115 | );\r | |
116 | \r | |
117 | EFI_PEI_NOTIFY_DESCRIPTOR mNotifyList[] = {\r | |
118 | {\r | |
119 | EFI_PEI_PPI_DESCRIPTOR_NOTIFY_CALLBACK,\r | |
120 | &gEfiPeiFirmwareVolumeInfoPpiGuid,\r | |
121 | FirmwareVolmeInfoPpiNotifyCallback \r | |
122 | },\r | |
123 | {\r | |
124 | EFI_PEI_PPI_DESCRIPTOR_NOTIFY_CALLBACK,\r | |
125 | &gEfiPeiFirmwareVolumeInfo2PpiGuid,\r | |
126 | FirmwareVolmeInfoPpiNotifyCallback \r | |
127 | },\r | |
128 | {\r | |
129 | (EFI_PEI_PPI_DESCRIPTOR_NOTIFY_CALLBACK | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),\r | |
130 | &gEfiEndOfPeiSignalPpiGuid,\r | |
131 | EndofPeiSignalNotifyCallBack\r | |
132 | }\r | |
133 | };\r | |
134 | \r | |
135 | EFI_PEI_FIRMWARE_VOLUME_INFO_MEASUREMENT_EXCLUDED_PPI *mMeasurementExcludedFvPpi;\r | |
136 | \r | |
137 | /**\r | |
138 | This function get digest from digest list.\r | |
139 | \r | |
140 | @param HashAlg digest algorithm\r | |
141 | @param DigestList digest list\r | |
142 | @param Digest digest\r | |
143 | \r | |
144 | @retval EFI_SUCCESS Sha1Digest is found and returned.\r | |
145 | @retval EFI_NOT_FOUND Sha1Digest is not found.\r | |
146 | **/\r | |
147 | EFI_STATUS\r | |
148 | Tpm2GetDigestFromDigestList (\r | |
149 | IN TPMI_ALG_HASH HashAlg,\r | |
150 | IN TPML_DIGEST_VALUES *DigestList,\r | |
151 | IN VOID *Digest\r | |
152 | )\r | |
153 | {\r | |
154 | UINTN Index;\r | |
155 | UINT16 DigestSize;\r | |
156 | \r | |
157 | DigestSize = GetHashSizeFromAlgo (HashAlg);\r | |
158 | for (Index = 0; Index < DigestList->count; Index++) {\r | |
159 | if (DigestList->digests[Index].hashAlg == HashAlg) {\r | |
160 | CopyMem (\r | |
161 | Digest,\r | |
162 | &DigestList->digests[Index].digest,\r | |
163 | DigestSize\r | |
164 | );\r | |
165 | return EFI_SUCCESS;\r | |
166 | }\r | |
167 | }\r | |
168 | \r | |
169 | return EFI_NOT_FOUND;\r | |
170 | }\r | |
171 | \r | |
172 | /**\r | |
173 | Record all measured Firmware Volum Information into a Guid Hob\r | |
174 | Guid Hob payload layout is \r | |
175 | \r | |
176 | UINT32 *************************** FIRMWARE_BLOB number\r | |
177 | EFI_PLATFORM_FIRMWARE_BLOB******** BLOB Array\r | |
178 | \r | |
179 | @param[in] PeiServices An indirect pointer to the EFI_PEI_SERVICES table published by the PEI Foundation.\r | |
180 | @param[in] NotifyDescriptor Address of the notification descriptor data structure.\r | |
181 | @param[in] Ppi Address of the PPI that was installed.\r | |
182 | \r | |
183 | @retval EFI_SUCCESS The FV Info is measured and recorded to TPM.\r | |
184 | @return Others Fail to measure FV.\r | |
185 | \r | |
186 | **/\r | |
187 | EFI_STATUS\r | |
188 | EFIAPI\r | |
189 | EndofPeiSignalNotifyCallBack (\r | |
190 | IN EFI_PEI_SERVICES **PeiServices,\r | |
191 | IN EFI_PEI_NOTIFY_DESCRIPTOR *NotifyDescriptor,\r | |
192 | IN VOID *Ppi\r | |
193 | )\r | |
194 | { \r | |
195 | MEASURED_HOB_DATA *MeasuredHobData;\r | |
196 | \r | |
197 | MeasuredHobData = NULL;\r | |
198 | \r | |
199 | //\r | |
200 | // Create a Guid hob to save all measured Fv \r | |
201 | //\r | |
202 | MeasuredHobData = BuildGuidHob(\r | |
203 | &gMeasuredFvHobGuid,\r | |
204 | sizeof(UINTN) + sizeof(EFI_PLATFORM_FIRMWARE_BLOB) * (mMeasuredBaseFvIndex + mMeasuredChildFvIndex)\r | |
205 | );\r | |
206 | \r | |
207 | if (MeasuredHobData != NULL){\r | |
208 | //\r | |
209 | // Save measured FV info enty number\r | |
210 | //\r | |
211 | MeasuredHobData->Num = mMeasuredBaseFvIndex + mMeasuredChildFvIndex;\r | |
212 | \r | |
213 | //\r | |
214 | // Save measured base Fv info\r | |
215 | //\r | |
216 | CopyMem (MeasuredHobData->MeasuredFvBuf, mMeasuredBaseFvInfo, sizeof(EFI_PLATFORM_FIRMWARE_BLOB) * (mMeasuredBaseFvIndex));\r | |
217 | \r | |
218 | //\r | |
219 | // Save measured child Fv info\r | |
220 | //\r | |
221 | CopyMem (&MeasuredHobData->MeasuredFvBuf[mMeasuredBaseFvIndex] , mMeasuredChildFvInfo, sizeof(EFI_PLATFORM_FIRMWARE_BLOB) * (mMeasuredChildFvIndex));\r | |
222 | }\r | |
223 | \r | |
224 | return EFI_SUCCESS;\r | |
225 | }\r | |
226 | \r | |
227 | /**\r | |
228 | Check if buffer is all zero.\r | |
229 | \r | |
230 | @param[in] Buffer Buffer to be checked.\r | |
231 | @param[in] BufferSize Size of buffer to be checked.\r | |
232 | \r | |
233 | @retval TRUE Buffer is all zero.\r | |
234 | @retval FALSE Buffer is not all zero.\r | |
235 | **/\r | |
236 | BOOLEAN\r | |
237 | IsZeroBuffer (\r | |
238 | IN VOID *Buffer,\r | |
239 | IN UINTN BufferSize\r | |
240 | )\r | |
241 | {\r | |
242 | UINT8 *BufferData;\r | |
243 | UINTN Index;\r | |
244 | \r | |
245 | BufferData = Buffer;\r | |
246 | for (Index = 0; Index < BufferSize; Index++) {\r | |
247 | if (BufferData[Index] != 0) {\r | |
248 | return FALSE;\r | |
249 | }\r | |
250 | }\r | |
251 | return TRUE;\r | |
252 | }\r | |
253 | \r | |
254 | /**\r | |
255 | Get TPML_DIGEST_VALUES data size.\r | |
256 | \r | |
257 | @param[in] DigestList TPML_DIGEST_VALUES data.\r | |
258 | \r | |
259 | @return TPML_DIGEST_VALUES data size.\r | |
260 | **/\r | |
261 | UINT32\r | |
262 | GetDigestListSize (\r | |
263 | IN TPML_DIGEST_VALUES *DigestList\r | |
264 | )\r | |
265 | {\r | |
266 | UINTN Index;\r | |
267 | UINT16 DigestSize;\r | |
268 | UINT32 TotalSize;\r | |
269 | \r | |
270 | TotalSize = sizeof(DigestList->count);\r | |
271 | for (Index = 0; Index < DigestList->count; Index++) {\r | |
272 | DigestSize = GetHashSizeFromAlgo (DigestList->digests[Index].hashAlg);\r | |
273 | TotalSize += sizeof(DigestList->digests[Index].hashAlg) + DigestSize;\r | |
274 | }\r | |
275 | \r | |
276 | return TotalSize;\r | |
277 | }\r | |
278 | \r | |
279 | /**\r | |
280 | Return if hash alg is supported in TPM PCR bank.\r | |
281 | \r | |
282 | @param HashAlg Hash algorithm to be checked.\r | |
283 | \r | |
284 | @retval TRUE Hash algorithm is supported.\r | |
285 | @retval FALSE Hash algorithm is not supported.\r | |
286 | **/\r | |
287 | BOOLEAN\r | |
288 | IsHashAlgSupportedInPcrBank (\r | |
289 | IN TPMI_ALG_HASH HashAlg\r | |
290 | )\r | |
291 | {\r | |
292 | UINT32 ActivePcrBanks;\r | |
293 | \r | |
294 | ActivePcrBanks = PcdGet32 (PcdTpm2HashMask);\r | |
295 | switch (HashAlg) {\r | |
296 | case TPM_ALG_SHA1:\r | |
297 | if ((ActivePcrBanks & EFI_TCG2_BOOT_HASH_ALG_SHA1) != 0) {\r | |
298 | return TRUE;\r | |
299 | }\r | |
300 | break;\r | |
301 | case TPM_ALG_SHA256:\r | |
302 | if ((ActivePcrBanks & EFI_TCG2_BOOT_HASH_ALG_SHA256) != 0) {\r | |
303 | return TRUE;\r | |
304 | }\r | |
305 | break;\r | |
306 | case TPM_ALG_SHA384:\r | |
307 | if ((ActivePcrBanks & EFI_TCG2_BOOT_HASH_ALG_SHA384) != 0) {\r | |
308 | return TRUE;\r | |
309 | }\r | |
310 | break;\r | |
311 | case TPM_ALG_SHA512:\r | |
312 | if ((ActivePcrBanks & EFI_TCG2_BOOT_HASH_ALG_SHA512) != 0) {\r | |
313 | return TRUE;\r | |
314 | }\r | |
315 | break;\r | |
316 | case TPM_ALG_SM3_256:\r | |
317 | if ((ActivePcrBanks & EFI_TCG2_BOOT_HASH_ALG_SM3_256) != 0) {\r | |
318 | return TRUE;\r | |
319 | }\r | |
320 | break;\r | |
321 | }\r | |
322 | \r | |
323 | return FALSE;\r | |
324 | }\r | |
325 | \r | |
326 | /**\r | |
327 | Copy TPML_DIGEST_VALUES into a buffer\r | |
328 | \r | |
329 | @param[in,out] Buffer Buffer to hold TPML_DIGEST_VALUES.\r | |
330 | @param[in] DigestList TPML_DIGEST_VALUES to be copied.\r | |
331 | \r | |
332 | @return The end of buffer to hold TPML_DIGEST_VALUES.\r | |
333 | **/\r | |
334 | VOID *\r | |
335 | CopyDigestListToBuffer (\r | |
336 | IN OUT VOID *Buffer,\r | |
337 | IN TPML_DIGEST_VALUES *DigestList\r | |
338 | )\r | |
339 | {\r | |
340 | UINTN Index;\r | |
341 | UINT16 DigestSize;\r | |
342 | \r | |
343 | CopyMem (Buffer, &DigestList->count, sizeof(DigestList->count));\r | |
344 | Buffer = (UINT8 *)Buffer + sizeof(DigestList->count);\r | |
345 | for (Index = 0; Index < DigestList->count; Index++) {\r | |
346 | if (!IsHashAlgSupportedInPcrBank (DigestList->digests[Index].hashAlg)) {\r | |
347 | DEBUG ((EFI_D_ERROR, "WARNING: TPM2 Event log has HashAlg unsupported by PCR bank (0x%x)\n", DigestList->digests[Index].hashAlg));\r | |
348 | continue;\r | |
349 | }\r | |
350 | CopyMem (Buffer, &DigestList->digests[Index].hashAlg, sizeof(DigestList->digests[Index].hashAlg));\r | |
351 | Buffer = (UINT8 *)Buffer + sizeof(DigestList->digests[Index].hashAlg);\r | |
352 | DigestSize = GetHashSizeFromAlgo (DigestList->digests[Index].hashAlg);\r | |
353 | CopyMem (Buffer, &DigestList->digests[Index].digest, DigestSize);\r | |
354 | Buffer = (UINT8 *)Buffer + DigestSize;\r | |
355 | }\r | |
356 | \r | |
357 | return Buffer;\r | |
358 | }\r | |
359 | \r | |
360 | /**\r | |
ef9870eb | 361 | Set Tpm2HashMask PCD value according to TPM2 PCR bank.\r |
1abfa4ce JY |
362 | **/\r |
363 | VOID\r | |
364 | SetTpm2HashMask (\r | |
365 | VOID\r | |
366 | )\r | |
367 | {\r | |
368 | EFI_STATUS Status;\r | |
369 | UINT32 ActivePcrBanks;\r | |
370 | TPML_PCR_SELECTION Pcrs;\r | |
371 | UINTN Index;\r | |
372 | \r | |
373 | DEBUG ((EFI_D_ERROR, "SetTpm2HashMask!\n"));\r | |
374 | \r | |
375 | Status = Tpm2GetCapabilityPcrs (&Pcrs);\r | |
376 | if (EFI_ERROR (Status)) {\r | |
377 | DEBUG ((EFI_D_ERROR, "Tpm2GetCapabilityPcrs fail!\n"));\r | |
378 | ActivePcrBanks = EFI_TCG2_BOOT_HASH_ALG_SHA1;\r | |
379 | } else {\r | |
380 | DEBUG ((EFI_D_INFO, "Tpm2GetCapabilityPcrs Count - %08x\n", Pcrs.count));\r | |
381 | ActivePcrBanks = 0;\r | |
382 | for (Index = 0; Index < Pcrs.count; Index++) {\r | |
383 | DEBUG ((EFI_D_INFO, "hash - %x\n", Pcrs.pcrSelections[Index].hash));\r | |
384 | switch (Pcrs.pcrSelections[Index].hash) {\r | |
385 | case TPM_ALG_SHA1:\r | |
386 | if (!IsZeroBuffer (Pcrs.pcrSelections[Index].pcrSelect, Pcrs.pcrSelections[Index].sizeofSelect)) {\r | |
387 | ActivePcrBanks |= EFI_TCG2_BOOT_HASH_ALG_SHA1;\r | |
388 | } \r | |
389 | break;\r | |
390 | case TPM_ALG_SHA256:\r | |
391 | if (!IsZeroBuffer (Pcrs.pcrSelections[Index].pcrSelect, Pcrs.pcrSelections[Index].sizeofSelect)) {\r | |
392 | ActivePcrBanks |= EFI_TCG2_BOOT_HASH_ALG_SHA256;\r | |
393 | }\r | |
394 | break;\r | |
395 | case TPM_ALG_SHA384:\r | |
396 | if (!IsZeroBuffer (Pcrs.pcrSelections[Index].pcrSelect, Pcrs.pcrSelections[Index].sizeofSelect)) {\r | |
397 | ActivePcrBanks |= EFI_TCG2_BOOT_HASH_ALG_SHA384;\r | |
398 | }\r | |
399 | break;\r | |
400 | case TPM_ALG_SHA512:\r | |
401 | if (!IsZeroBuffer (Pcrs.pcrSelections[Index].pcrSelect, Pcrs.pcrSelections[Index].sizeofSelect)) {\r | |
402 | ActivePcrBanks |= EFI_TCG2_BOOT_HASH_ALG_SHA512;\r | |
403 | }\r | |
404 | break;\r | |
405 | case TPM_ALG_SM3_256:\r | |
406 | if (!IsZeroBuffer (Pcrs.pcrSelections[Index].pcrSelect, Pcrs.pcrSelections[Index].sizeofSelect)) {\r | |
407 | ActivePcrBanks |= EFI_TCG2_BOOT_HASH_ALG_SM3_256;\r | |
408 | }\r | |
409 | break;\r | |
410 | }\r | |
411 | }\r | |
412 | }\r | |
fe3ca12d SZ |
413 | Status = PcdSet32S (PcdTpm2HashMask, ActivePcrBanks);\r |
414 | ASSERT_EFI_ERROR (Status);\r | |
1abfa4ce JY |
415 | }\r |
416 | \r | |
417 | /**\r | |
418 | Add a new entry to the Event Log.\r | |
419 | \r | |
420 | @param[in] DigestList A list of digest.\r | |
421 | @param[in,out] NewEventHdr Pointer to a TCG_PCR_EVENT_HDR data structure.\r | |
422 | @param[in] NewEventData Pointer to the new event data.\r | |
423 | \r | |
424 | @retval EFI_SUCCESS The new event log entry was added.\r | |
425 | @retval EFI_OUT_OF_RESOURCES No enough memory to log the new event.\r | |
426 | **/\r | |
427 | EFI_STATUS\r | |
428 | LogHashEvent (\r | |
429 | IN TPML_DIGEST_VALUES *DigestList,\r | |
430 | IN OUT TCG_PCR_EVENT_HDR *NewEventHdr,\r | |
431 | IN UINT8 *NewEventData\r | |
432 | )\r | |
433 | {\r | |
434 | VOID *HobData;\r | |
435 | EFI_STATUS Status;\r | |
436 | UINTN Index;\r | |
437 | EFI_STATUS RetStatus;\r | |
438 | UINT32 SupportedEventLogs;\r | |
439 | TCG_PCR_EVENT2 *TcgPcrEvent2;\r | |
440 | UINT8 *DigestBuffer;\r | |
441 | \r | |
442 | SupportedEventLogs = EFI_TCG2_EVENT_LOG_FORMAT_TCG_1_2 | EFI_TCG2_EVENT_LOG_FORMAT_TCG_2;\r | |
443 | \r | |
444 | RetStatus = EFI_SUCCESS;\r | |
445 | for (Index = 0; Index < sizeof(mTcg2EventInfo)/sizeof(mTcg2EventInfo[0]); Index++) {\r | |
446 | if ((SupportedEventLogs & mTcg2EventInfo[Index].LogFormat) != 0) {\r | |
447 | DEBUG ((EFI_D_INFO, " LogFormat - 0x%08x\n", mTcg2EventInfo[Index].LogFormat));\r | |
448 | switch (mTcg2EventInfo[Index].LogFormat) {\r | |
449 | case EFI_TCG2_EVENT_LOG_FORMAT_TCG_1_2:\r | |
450 | Status = Tpm2GetDigestFromDigestList (TPM_ALG_SHA1, DigestList, &NewEventHdr->Digest);\r | |
451 | if (!EFI_ERROR (Status)) {\r | |
452 | HobData = BuildGuidHob (\r | |
453 | &gTcgEventEntryHobGuid,\r | |
454 | sizeof (*NewEventHdr) + NewEventHdr->EventSize\r | |
455 | );\r | |
456 | if (HobData == NULL) {\r | |
457 | RetStatus = EFI_OUT_OF_RESOURCES;\r | |
458 | break;\r | |
459 | }\r | |
460 | \r | |
461 | CopyMem (HobData, NewEventHdr, sizeof (*NewEventHdr));\r | |
462 | HobData = (VOID *) ((UINT8*)HobData + sizeof (*NewEventHdr));\r | |
463 | CopyMem (HobData, NewEventData, NewEventHdr->EventSize);\r | |
464 | }\r | |
465 | break;\r | |
466 | case EFI_TCG2_EVENT_LOG_FORMAT_TCG_2:\r | |
467 | HobData = BuildGuidHob (\r | |
468 | &gTcgEvent2EntryHobGuid,\r | |
469 | sizeof(TcgPcrEvent2->PCRIndex) + sizeof(TcgPcrEvent2->EventType) + GetDigestListSize (DigestList) + sizeof(TcgPcrEvent2->EventSize) + NewEventHdr->EventSize\r | |
470 | );\r | |
471 | if (HobData == NULL) {\r | |
472 | RetStatus = EFI_OUT_OF_RESOURCES;\r | |
473 | break;\r | |
474 | }\r | |
475 | \r | |
476 | TcgPcrEvent2 = HobData;\r | |
477 | TcgPcrEvent2->PCRIndex = NewEventHdr->PCRIndex;\r | |
478 | TcgPcrEvent2->EventType = NewEventHdr->EventType;\r | |
479 | DigestBuffer = (UINT8 *)&TcgPcrEvent2->Digest;\r | |
480 | DigestBuffer = CopyDigestListToBuffer (DigestBuffer, DigestList);\r | |
481 | CopyMem (DigestBuffer, &NewEventHdr->EventSize, sizeof(TcgPcrEvent2->EventSize));\r | |
482 | DigestBuffer = DigestBuffer + sizeof(TcgPcrEvent2->EventSize);\r | |
483 | CopyMem (DigestBuffer, NewEventData, NewEventHdr->EventSize);\r | |
484 | break;\r | |
485 | }\r | |
486 | }\r | |
487 | }\r | |
488 | \r | |
489 | return RetStatus;\r | |
490 | }\r | |
491 | \r | |
492 | /**\r | |
493 | Do a hash operation on a data buffer, extend a specific TPM PCR with the hash result,\r | |
494 | and build a GUIDed HOB recording the event which will be passed to the DXE phase and\r | |
495 | added into the Event Log.\r | |
496 | \r | |
497 | @param[in] Flags Bitmap providing additional information.\r | |
498 | @param[in] HashData Physical address of the start of the data buffer \r | |
499 | to be hashed, extended, and logged.\r | |
500 | @param[in] HashDataLen The length, in bytes, of the buffer referenced by HashData.\r | |
501 | @param[in] NewEventHdr Pointer to a TCG_PCR_EVENT_HDR data structure. \r | |
502 | @param[in] NewEventData Pointer to the new event data. \r | |
503 | \r | |
504 | @retval EFI_SUCCESS Operation completed successfully.\r | |
505 | @retval EFI_OUT_OF_RESOURCES No enough memory to log the new event.\r | |
506 | @retval EFI_DEVICE_ERROR The command was unsuccessful.\r | |
507 | \r | |
508 | **/\r | |
509 | EFI_STATUS\r | |
510 | HashLogExtendEvent (\r | |
511 | IN UINT64 Flags,\r | |
512 | IN UINT8 *HashData,\r | |
513 | IN UINTN HashDataLen,\r | |
514 | IN TCG_PCR_EVENT_HDR *NewEventHdr,\r | |
515 | IN UINT8 *NewEventData\r | |
516 | )\r | |
517 | {\r | |
518 | EFI_STATUS Status;\r | |
519 | TPML_DIGEST_VALUES DigestList;\r | |
520 | \r | |
521 | if (GetFirstGuidHob (&gTpmErrorHobGuid) != NULL) {\r | |
522 | return EFI_DEVICE_ERROR;\r | |
523 | }\r | |
524 | \r | |
525 | Status = HashAndExtend (\r | |
526 | NewEventHdr->PCRIndex,\r | |
527 | HashData,\r | |
528 | HashDataLen,\r | |
529 | &DigestList\r | |
530 | );\r | |
531 | if (!EFI_ERROR (Status)) {\r | |
532 | if ((Flags & EFI_TCG2_EXTEND_ONLY) == 0) {\r | |
533 | Status = LogHashEvent (&DigestList, NewEventHdr, NewEventData);\r | |
534 | }\r | |
535 | }\r | |
536 | \r | |
537 | if (Status == EFI_DEVICE_ERROR) {\r | |
538 | DEBUG ((EFI_D_ERROR, "HashLogExtendEvent - %r. Disable TPM.\n", Status));\r | |
539 | BuildGuidHob (&gTpmErrorHobGuid,0);\r | |
540 | REPORT_STATUS_CODE (\r | |
541 | EFI_ERROR_CODE | EFI_ERROR_MINOR,\r | |
542 | (PcdGet32 (PcdStatusCodeSubClassTpmDevice) | EFI_P_EC_INTERFACE_ERROR)\r | |
543 | );\r | |
544 | }\r | |
545 | \r | |
546 | return Status;\r | |
547 | }\r | |
548 | \r | |
549 | /**\r | |
550 | Measure CRTM version.\r | |
551 | \r | |
552 | @retval EFI_SUCCESS Operation completed successfully.\r | |
553 | @retval EFI_OUT_OF_RESOURCES No enough memory to log the new event.\r | |
554 | @retval EFI_DEVICE_ERROR The command was unsuccessful.\r | |
555 | \r | |
556 | **/\r | |
557 | EFI_STATUS\r | |
558 | MeasureCRTMVersion (\r | |
559 | VOID\r | |
560 | )\r | |
561 | {\r | |
562 | TCG_PCR_EVENT_HDR TcgEventHdr;\r | |
563 | \r | |
564 | //\r | |
565 | // Use FirmwareVersion string to represent CRTM version.\r | |
566 | // OEMs should get real CRTM version string and measure it.\r | |
567 | //\r | |
568 | \r | |
569 | TcgEventHdr.PCRIndex = 0;\r | |
570 | TcgEventHdr.EventType = EV_S_CRTM_VERSION;\r | |
571 | TcgEventHdr.EventSize = (UINT32) StrSize((CHAR16*)PcdGetPtr (PcdFirmwareVersionString));\r | |
572 | \r | |
573 | return HashLogExtendEvent (\r | |
574 | 0,\r | |
575 | (UINT8*)PcdGetPtr (PcdFirmwareVersionString),\r | |
576 | TcgEventHdr.EventSize,\r | |
577 | &TcgEventHdr,\r | |
578 | (UINT8*)PcdGetPtr (PcdFirmwareVersionString)\r | |
579 | );\r | |
580 | }\r | |
581 | \r | |
582 | /**\r | |
583 | Measure FV image. \r | |
584 | Add it into the measured FV list after the FV is measured successfully. \r | |
585 | \r | |
586 | @param[in] FvBase Base address of FV image.\r | |
587 | @param[in] FvLength Length of FV image.\r | |
588 | \r | |
589 | @retval EFI_SUCCESS Fv image is measured successfully \r | |
590 | or it has been already measured.\r | |
591 | @retval EFI_OUT_OF_RESOURCES No enough memory to log the new event.\r | |
592 | @retval EFI_DEVICE_ERROR The command was unsuccessful.\r | |
593 | \r | |
594 | **/\r | |
595 | EFI_STATUS\r | |
596 | MeasureFvImage (\r | |
597 | IN EFI_PHYSICAL_ADDRESS FvBase,\r | |
598 | IN UINT64 FvLength\r | |
599 | )\r | |
600 | {\r | |
601 | UINT32 Index;\r | |
602 | EFI_STATUS Status;\r | |
603 | EFI_PLATFORM_FIRMWARE_BLOB FvBlob;\r | |
604 | TCG_PCR_EVENT_HDR TcgEventHdr;\r | |
605 | \r | |
606 | //\r | |
607 | // Check if it is in Excluded FV list\r | |
608 | //\r | |
609 | if (mMeasurementExcludedFvPpi != NULL) {\r | |
610 | for (Index = 0; Index < mMeasurementExcludedFvPpi->Count; Index ++) {\r | |
611 | if (mMeasurementExcludedFvPpi->Fv[Index].FvBase == FvBase) {\r | |
612 | DEBUG ((DEBUG_INFO, "The FV which is excluded by Tcg2Pei starts at: 0x%x\n", FvBase));\r | |
613 | DEBUG ((DEBUG_INFO, "The FV which is excluded by Tcg2Pei has the size: 0x%x\n", FvLength));\r | |
614 | return EFI_SUCCESS;\r | |
615 | }\r | |
616 | }\r | |
617 | }\r | |
618 | \r | |
619 | //\r | |
620 | // Check whether FV is in the measured FV list.\r | |
621 | //\r | |
622 | for (Index = 0; Index < mMeasuredBaseFvIndex; Index ++) {\r | |
623 | if (mMeasuredBaseFvInfo[Index].BlobBase == FvBase) {\r | |
624 | return EFI_SUCCESS;\r | |
625 | }\r | |
626 | }\r | |
627 | \r | |
628 | //\r | |
629 | // Measure and record the FV to the TPM\r | |
630 | //\r | |
631 | FvBlob.BlobBase = FvBase;\r | |
632 | FvBlob.BlobLength = FvLength;\r | |
633 | \r | |
634 | DEBUG ((DEBUG_INFO, "The FV which is measured by Tcg2Pei starts at: 0x%x\n", FvBlob.BlobBase));\r | |
635 | DEBUG ((DEBUG_INFO, "The FV which is measured by Tcg2Pei has the size: 0x%x\n", FvBlob.BlobLength));\r | |
636 | \r | |
637 | TcgEventHdr.PCRIndex = 0;\r | |
638 | TcgEventHdr.EventType = EV_EFI_PLATFORM_FIRMWARE_BLOB;\r | |
639 | TcgEventHdr.EventSize = sizeof (FvBlob);\r | |
640 | \r | |
641 | Status = HashLogExtendEvent (\r | |
642 | 0,\r | |
643 | (UINT8*) (UINTN) FvBlob.BlobBase,\r | |
644 | (UINTN) FvBlob.BlobLength,\r | |
645 | &TcgEventHdr,\r | |
646 | (UINT8*) &FvBlob\r | |
647 | );\r | |
648 | \r | |
649 | //\r | |
650 | // Add new FV into the measured FV list.\r | |
651 | //\r | |
652 | ASSERT (mMeasuredBaseFvIndex < FixedPcdGet32 (PcdPeiCoreMaxFvSupported));\r | |
653 | if (mMeasuredBaseFvIndex < FixedPcdGet32 (PcdPeiCoreMaxFvSupported)) {\r | |
654 | mMeasuredBaseFvInfo[mMeasuredBaseFvIndex].BlobBase = FvBase;\r | |
655 | mMeasuredBaseFvInfo[mMeasuredBaseFvIndex].BlobLength = FvLength;\r | |
656 | mMeasuredBaseFvIndex++;\r | |
657 | }\r | |
658 | \r | |
659 | return Status;\r | |
660 | }\r | |
661 | \r | |
662 | /**\r | |
663 | Measure main BIOS.\r | |
664 | \r | |
665 | @retval EFI_SUCCESS Operation completed successfully.\r | |
666 | @retval EFI_OUT_OF_RESOURCES No enough memory to log the new event.\r | |
667 | @retval EFI_DEVICE_ERROR The command was unsuccessful.\r | |
668 | \r | |
669 | **/\r | |
670 | EFI_STATUS\r | |
671 | MeasureMainBios (\r | |
672 | VOID\r | |
673 | )\r | |
674 | {\r | |
675 | EFI_STATUS Status;\r | |
676 | UINT32 FvInstances;\r | |
677 | EFI_PEI_FV_HANDLE VolumeHandle;\r | |
678 | EFI_FV_INFO VolumeInfo;\r | |
679 | EFI_PEI_FIRMWARE_VOLUME_PPI *FvPpi;\r | |
680 | \r | |
681 | PERF_START_EX (mFileHandle, "EventRec", "Tcg2Pei", 0, PERF_ID_TCG2_PEI);\r | |
682 | FvInstances = 0;\r | |
683 | while (TRUE) {\r | |
684 | //\r | |
685 | // Traverse all firmware volume instances of Static Core Root of Trust for Measurement\r | |
686 | // (S-CRTM), this firmware volume measure policy can be modified/enhanced by special\r | |
687 | // platform for special CRTM TPM measuring.\r | |
688 | //\r | |
689 | Status = PeiServicesFfsFindNextVolume (FvInstances, &VolumeHandle);\r | |
690 | if (EFI_ERROR (Status)) {\r | |
691 | break;\r | |
692 | }\r | |
693 | \r | |
694 | //\r | |
695 | // Measure and record the firmware volume that is dispatched by PeiCore\r | |
696 | //\r | |
697 | Status = PeiServicesFfsGetVolumeInfo (VolumeHandle, &VolumeInfo);\r | |
698 | ASSERT_EFI_ERROR (Status);\r | |
699 | //\r | |
700 | // Locate the corresponding FV_PPI according to founded FV's format guid\r | |
701 | //\r | |
702 | Status = PeiServicesLocatePpi (\r | |
703 | &VolumeInfo.FvFormat, \r | |
704 | 0, \r | |
705 | NULL,\r | |
706 | (VOID**)&FvPpi\r | |
707 | );\r | |
708 | if (!EFI_ERROR (Status)) {\r | |
709 | MeasureFvImage ((EFI_PHYSICAL_ADDRESS) (UINTN) VolumeInfo.FvStart, VolumeInfo.FvSize);\r | |
710 | }\r | |
711 | \r | |
712 | FvInstances++;\r | |
713 | }\r | |
714 | PERF_END_EX (mFileHandle, "EventRec", "Tcg2Pei", 0, PERF_ID_TCG2_PEI + 1);\r | |
715 | \r | |
716 | return EFI_SUCCESS;\r | |
717 | }\r | |
718 | \r | |
719 | /**\r | |
720 | Measure and record the Firmware Volum Information once FvInfoPPI install.\r | |
721 | \r | |
722 | @param[in] PeiServices An indirect pointer to the EFI_PEI_SERVICES table published by the PEI Foundation.\r | |
723 | @param[in] NotifyDescriptor Address of the notification descriptor data structure.\r | |
724 | @param[in] Ppi Address of the PPI that was installed.\r | |
725 | \r | |
726 | @retval EFI_SUCCESS The FV Info is measured and recorded to TPM.\r | |
727 | @return Others Fail to measure FV.\r | |
728 | \r | |
729 | **/\r | |
730 | EFI_STATUS\r | |
731 | EFIAPI\r | |
732 | FirmwareVolmeInfoPpiNotifyCallback (\r | |
733 | IN EFI_PEI_SERVICES **PeiServices,\r | |
734 | IN EFI_PEI_NOTIFY_DESCRIPTOR *NotifyDescriptor,\r | |
735 | IN VOID *Ppi\r | |
736 | )\r | |
737 | {\r | |
738 | EFI_PEI_FIRMWARE_VOLUME_INFO_PPI *Fv;\r | |
739 | EFI_STATUS Status;\r | |
740 | EFI_PEI_FIRMWARE_VOLUME_PPI *FvPpi;\r | |
741 | UINTN Index;\r | |
742 | \r | |
743 | Fv = (EFI_PEI_FIRMWARE_VOLUME_INFO_PPI *) Ppi;\r | |
744 | \r | |
745 | //\r | |
746 | // The PEI Core can not dispatch or load files from memory mapped FVs that do not support FvPpi.\r | |
747 | //\r | |
748 | Status = PeiServicesLocatePpi (\r | |
749 | &Fv->FvFormat, \r | |
750 | 0, \r | |
751 | NULL,\r | |
752 | (VOID**)&FvPpi\r | |
753 | );\r | |
754 | if (EFI_ERROR (Status)) {\r | |
755 | return EFI_SUCCESS;\r | |
756 | }\r | |
757 | \r | |
758 | //\r | |
759 | // This is an FV from an FFS file, and the parent FV must have already been measured,\r | |
760 | // No need to measure twice, so just record the FV and return\r | |
761 | //\r | |
762 | if (Fv->ParentFvName != NULL || Fv->ParentFileName != NULL ) {\r | |
763 | \r | |
764 | ASSERT (mMeasuredChildFvIndex < FixedPcdGet32 (PcdPeiCoreMaxFvSupported));\r | |
765 | if (mMeasuredChildFvIndex < FixedPcdGet32 (PcdPeiCoreMaxFvSupported)) {\r | |
766 | //\r | |
767 | // Check whether FV is in the measured child FV list.\r | |
768 | //\r | |
769 | for (Index = 0; Index < mMeasuredChildFvIndex; Index++) {\r | |
770 | if (mMeasuredChildFvInfo[Index].BlobBase == (EFI_PHYSICAL_ADDRESS) (UINTN) Fv->FvInfo) {\r | |
771 | return EFI_SUCCESS;\r | |
772 | }\r | |
773 | }\r | |
774 | mMeasuredChildFvInfo[mMeasuredChildFvIndex].BlobBase = (EFI_PHYSICAL_ADDRESS) (UINTN) Fv->FvInfo;\r | |
775 | mMeasuredChildFvInfo[mMeasuredChildFvIndex].BlobLength = Fv->FvInfoSize;\r | |
776 | mMeasuredChildFvIndex++;\r | |
777 | }\r | |
778 | return EFI_SUCCESS;\r | |
779 | }\r | |
780 | \r | |
781 | return MeasureFvImage ((EFI_PHYSICAL_ADDRESS) (UINTN) Fv->FvInfo, Fv->FvInfoSize);\r | |
782 | }\r | |
783 | \r | |
784 | /**\r | |
785 | Do measurement after memory is ready.\r | |
786 | \r | |
787 | @param[in] PeiServices Describes the list of possible PEI Services.\r | |
788 | \r | |
789 | @retval EFI_SUCCESS Operation completed successfully.\r | |
790 | @retval EFI_OUT_OF_RESOURCES No enough memory to log the new event.\r | |
791 | @retval EFI_DEVICE_ERROR The command was unsuccessful.\r | |
792 | \r | |
793 | **/\r | |
794 | EFI_STATUS\r | |
795 | PeimEntryMP (\r | |
796 | IN EFI_PEI_SERVICES **PeiServices\r | |
797 | )\r | |
798 | {\r | |
799 | EFI_STATUS Status;\r | |
800 | \r | |
801 | Status = PeiServicesLocatePpi (\r | |
802 | &gEfiPeiFirmwareVolumeInfoMeasurementExcludedPpiGuid, \r | |
803 | 0, \r | |
804 | NULL,\r | |
805 | (VOID**)&mMeasurementExcludedFvPpi\r | |
806 | );\r | |
807 | // Do not check status, because it is optional\r | |
808 | \r | |
809 | mMeasuredBaseFvInfo = (EFI_PLATFORM_FIRMWARE_BLOB *) AllocateZeroPool (sizeof (EFI_PLATFORM_FIRMWARE_BLOB) * PcdGet32 (PcdPeiCoreMaxFvSupported));\r | |
810 | ASSERT (mMeasuredBaseFvInfo != NULL);\r | |
811 | mMeasuredChildFvInfo = (EFI_PLATFORM_FIRMWARE_BLOB *) AllocateZeroPool (sizeof (EFI_PLATFORM_FIRMWARE_BLOB) * PcdGet32 (PcdPeiCoreMaxFvSupported));\r | |
812 | ASSERT (mMeasuredChildFvInfo != NULL);\r | |
813 | \r | |
814 | if (PcdGet8 (PcdTpm2ScrtmPolicy) == 1) {\r | |
815 | Status = MeasureCRTMVersion ();\r | |
816 | }\r | |
817 | \r | |
818 | Status = MeasureMainBios ();\r | |
819 | \r | |
820 | //\r | |
821 | // Post callbacks:\r | |
822 | // for the FvInfoPpi services to measure and record\r | |
823 | // the additional Fvs to TPM\r | |
824 | //\r | |
825 | Status = PeiServicesNotifyPpi (&mNotifyList[0]);\r | |
826 | ASSERT_EFI_ERROR (Status);\r | |
827 | \r | |
828 | return Status;\r | |
829 | }\r | |
830 | \r | |
c2fe66bf JY |
831 | /**\r |
832 | Measure and log Separator event with error, and extend the measurement result into a specific PCR.\r | |
833 | \r | |
834 | @param[in] PCRIndex PCR index. \r | |
835 | \r | |
836 | @retval EFI_SUCCESS Operation completed successfully.\r | |
837 | @retval EFI_DEVICE_ERROR The operation was unsuccessful.\r | |
838 | \r | |
839 | **/\r | |
840 | EFI_STATUS\r | |
841 | MeasureSeparatorEventWithError (\r | |
842 | IN TPM_PCRINDEX PCRIndex\r | |
843 | )\r | |
844 | {\r | |
845 | TCG_PCR_EVENT_HDR TcgEvent;\r | |
846 | UINT32 EventData;\r | |
847 | \r | |
848 | //\r | |
849 | // Use EventData 0x1 to indicate there is error.\r | |
850 | //\r | |
851 | EventData = 0x1;\r | |
852 | TcgEvent.PCRIndex = PCRIndex;\r | |
853 | TcgEvent.EventType = EV_SEPARATOR;\r | |
854 | TcgEvent.EventSize = (UINT32)sizeof (EventData);\r | |
855 | return HashLogExtendEvent(0,(UINT8 *)&EventData, TcgEvent.EventSize, &TcgEvent,(UINT8 *)&EventData);\r | |
856 | }\r | |
857 | \r | |
1abfa4ce JY |
858 | /**\r |
859 | Entry point of this module.\r | |
860 | \r | |
861 | @param[in] FileHandle Handle of the file being invoked.\r | |
862 | @param[in] PeiServices Describes the list of possible PEI Services.\r | |
863 | \r | |
864 | @return Status.\r | |
865 | \r | |
866 | **/\r | |
867 | EFI_STATUS\r | |
868 | EFIAPI\r | |
869 | PeimEntryMA (\r | |
870 | IN EFI_PEI_FILE_HANDLE FileHandle,\r | |
871 | IN CONST EFI_PEI_SERVICES **PeiServices\r | |
872 | )\r | |
873 | {\r | |
874 | EFI_STATUS Status;\r | |
875 | EFI_STATUS Status2;\r | |
876 | EFI_BOOT_MODE BootMode;\r | |
c2fe66bf JY |
877 | TPM_PCRINDEX PcrIndex;\r |
878 | BOOLEAN S3ErrorReport;\r | |
1abfa4ce JY |
879 | \r |
880 | if (CompareGuid (PcdGetPtr(PcdTpmInstanceGuid), &gEfiTpmDeviceInstanceNoneGuid) ||\r | |
881 | CompareGuid (PcdGetPtr(PcdTpmInstanceGuid), &gEfiTpmDeviceInstanceTpm12Guid)){\r | |
882 | DEBUG ((EFI_D_ERROR, "No TPM2 instance required!\n"));\r | |
883 | return EFI_UNSUPPORTED;\r | |
884 | }\r | |
885 | \r | |
886 | if (GetFirstGuidHob (&gTpmErrorHobGuid) != NULL) {\r | |
887 | DEBUG ((EFI_D_ERROR, "TPM2 error!\n"));\r | |
888 | return EFI_DEVICE_ERROR;\r | |
889 | }\r | |
890 | \r | |
891 | Status = PeiServicesGetBootMode (&BootMode);\r | |
892 | ASSERT_EFI_ERROR (Status);\r | |
893 | \r | |
894 | //\r | |
895 | // In S3 path, skip shadow logic. no measurement is required\r | |
896 | //\r | |
897 | if (BootMode != BOOT_ON_S3_RESUME) {\r | |
898 | Status = (**PeiServices).RegisterForShadow(FileHandle);\r | |
899 | if (Status == EFI_ALREADY_STARTED) {\r | |
900 | mImageInMemory = TRUE;\r | |
901 | mFileHandle = FileHandle;\r | |
902 | } else if (Status == EFI_NOT_FOUND) {\r | |
903 | ASSERT_EFI_ERROR (Status);\r | |
904 | }\r | |
905 | }\r | |
906 | \r | |
907 | if (!mImageInMemory) {\r | |
908 | //\r | |
909 | // Initialize TPM device\r | |
910 | //\r | |
911 | Status = Tpm2RequestUseTpm ();\r | |
912 | if (EFI_ERROR (Status)) {\r | |
913 | DEBUG ((DEBUG_ERROR, "TPM2 not detected!\n"));\r | |
914 | goto Done;\r | |
915 | }\r | |
916 | \r | |
c2fe66bf | 917 | S3ErrorReport = FALSE;\r |
1abfa4ce JY |
918 | if (PcdGet8 (PcdTpm2InitializationPolicy) == 1) {\r |
919 | if (BootMode == BOOT_ON_S3_RESUME) {\r | |
920 | Status = Tpm2Startup (TPM_SU_STATE);\r | |
921 | if (EFI_ERROR (Status) ) {\r | |
922 | Status = Tpm2Startup (TPM_SU_CLEAR);\r | |
c2fe66bf JY |
923 | if (!EFI_ERROR(Status)) {\r |
924 | S3ErrorReport = TRUE;\r | |
925 | }\r | |
1abfa4ce JY |
926 | }\r |
927 | } else {\r | |
928 | Status = Tpm2Startup (TPM_SU_CLEAR);\r | |
929 | }\r | |
930 | if (EFI_ERROR (Status) ) {\r | |
931 | goto Done;\r | |
932 | }\r | |
933 | }\r | |
934 | \r | |
935 | //\r | |
936 | // Update Tpm2HashMask according to PCR bank.\r | |
937 | //\r | |
938 | SetTpm2HashMask ();\r | |
c2fe66bf JY |
939 | \r |
940 | if (S3ErrorReport) {\r | |
941 | //\r | |
942 | // The system firmware that resumes from S3 MUST deal with a\r | |
943 | // TPM2_Startup error appropriately.\r | |
944 | // For example, issue a TPM2_Startup(TPM_SU_CLEAR) command and\r | |
945 | // configuring the device securely by taking actions like extending a\r | |
946 | // separator with an error digest (0x01) into PCRs 0 through 7.\r | |
947 | //\r | |
948 | for (PcrIndex = 0; PcrIndex < 8; PcrIndex++) {\r | |
949 | Status = MeasureSeparatorEventWithError (PcrIndex);\r | |
950 | if (EFI_ERROR (Status)) {\r | |
951 | DEBUG ((EFI_D_ERROR, "Separator Event with Error not Measured. Error!\n"));\r | |
952 | }\r | |
953 | }\r | |
954 | }\r | |
955 | \r | |
1abfa4ce JY |
956 | //\r |
957 | // TpmSelfTest is optional on S3 path, skip it to save S3 time\r | |
958 | //\r | |
959 | if (BootMode != BOOT_ON_S3_RESUME) {\r | |
960 | if (PcdGet8 (PcdTpm2SelfTestPolicy) == 1) {\r | |
961 | Status = Tpm2SelfTest (NO);\r | |
962 | if (EFI_ERROR (Status)) {\r | |
963 | goto Done;\r | |
964 | }\r | |
965 | }\r | |
966 | }\r | |
967 | \r | |
968 | //\r | |
969 | // Only intall TpmInitializedPpi on success\r | |
970 | //\r | |
971 | Status = PeiServicesInstallPpi (&mTpmInitializedPpiList);\r | |
972 | ASSERT_EFI_ERROR (Status);\r | |
973 | }\r | |
974 | \r | |
975 | if (mImageInMemory) {\r | |
976 | Status = PeimEntryMP ((EFI_PEI_SERVICES**)PeiServices);\r | |
977 | return Status;\r | |
978 | }\r | |
979 | \r | |
980 | Done:\r | |
981 | if (EFI_ERROR (Status)) {\r | |
982 | DEBUG ((EFI_D_ERROR, "TPM2 error! Build Hob\n"));\r | |
983 | BuildGuidHob (&gTpmErrorHobGuid,0);\r | |
984 | REPORT_STATUS_CODE (\r | |
985 | EFI_ERROR_CODE | EFI_ERROR_MINOR,\r | |
986 | (PcdGet32 (PcdStatusCodeSubClassTpmDevice) | EFI_P_EC_INTERFACE_ERROR)\r | |
987 | );\r | |
988 | }\r | |
989 | //\r | |
990 | // Always intall TpmInitializationDonePpi no matter success or fail.\r | |
991 | // Other driver can know TPM initialization state by TpmInitializedPpi.\r | |
992 | //\r | |
993 | Status2 = PeiServicesInstallPpi (&mTpmInitializationDonePpiList);\r | |
994 | ASSERT_EFI_ERROR (Status2);\r | |
995 | \r | |
996 | return Status;\r | |
997 | }\r |