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c1d93242 JY |
1 | /** @file\r |
2 | Implement TPM2 Integrity related command.\r | |
3 | \r | |
dd577319 | 4 | Copyright (c) 2013 - 2018, Intel Corporation. All rights reserved. <BR>\r |
289b714b | 5 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
c1d93242 JY |
6 | \r |
7 | **/\r | |
8 | \r | |
9 | #include <IndustryStandard/UefiTcgPlatform.h>\r | |
10 | #include <Library/Tpm2CommandLib.h>\r | |
11 | #include <Library/Tpm2DeviceLib.h>\r | |
12 | #include <Library/BaseMemoryLib.h>\r | |
13 | #include <Library/BaseLib.h>\r | |
14 | #include <Library/DebugLib.h>\r | |
15 | \r | |
16 | #pragma pack(1)\r | |
17 | \r | |
18 | typedef struct {\r | |
19 | TPM2_COMMAND_HEADER Header;\r | |
20 | TPMI_DH_PCR PcrHandle;\r | |
21 | UINT32 AuthorizationSize;\r | |
22 | TPMS_AUTH_COMMAND AuthSessionPcr;\r | |
23 | TPML_DIGEST_VALUES DigestValues;\r | |
24 | } TPM2_PCR_EXTEND_COMMAND;\r | |
25 | \r | |
26 | typedef struct {\r | |
27 | TPM2_RESPONSE_HEADER Header;\r | |
28 | UINT32 ParameterSize;\r | |
29 | TPMS_AUTH_RESPONSE AuthSessionPcr;\r | |
30 | } TPM2_PCR_EXTEND_RESPONSE;\r | |
31 | \r | |
32 | typedef struct {\r | |
33 | TPM2_COMMAND_HEADER Header;\r | |
34 | TPMI_DH_PCR PcrHandle;\r | |
35 | UINT32 AuthorizationSize;\r | |
36 | TPMS_AUTH_COMMAND AuthSessionPcr;\r | |
37 | TPM2B_EVENT EventData;\r | |
38 | } TPM2_PCR_EVENT_COMMAND;\r | |
39 | \r | |
40 | typedef struct {\r | |
41 | TPM2_RESPONSE_HEADER Header;\r | |
42 | UINT32 ParameterSize;\r | |
43 | TPML_DIGEST_VALUES Digests;\r | |
44 | TPMS_AUTH_RESPONSE AuthSessionPcr;\r | |
45 | } TPM2_PCR_EVENT_RESPONSE;\r | |
46 | \r | |
47 | typedef struct {\r | |
48 | TPM2_COMMAND_HEADER Header;\r | |
49 | TPML_PCR_SELECTION PcrSelectionIn;\r | |
50 | } TPM2_PCR_READ_COMMAND;\r | |
51 | \r | |
52 | typedef struct {\r | |
53 | TPM2_RESPONSE_HEADER Header;\r | |
54 | UINT32 PcrUpdateCounter;\r | |
55 | TPML_PCR_SELECTION PcrSelectionOut;\r | |
56 | TPML_DIGEST PcrValues;\r | |
57 | } TPM2_PCR_READ_RESPONSE;\r | |
58 | \r | |
59 | typedef struct {\r | |
60 | TPM2_COMMAND_HEADER Header;\r | |
61 | TPMI_RH_PLATFORM AuthHandle;\r | |
62 | UINT32 AuthSessionSize;\r | |
63 | TPMS_AUTH_COMMAND AuthSession;\r | |
64 | TPML_PCR_SELECTION PcrAllocation;\r | |
65 | } TPM2_PCR_ALLOCATE_COMMAND;\r | |
66 | \r | |
67 | typedef struct {\r | |
68 | TPM2_RESPONSE_HEADER Header;\r | |
69 | UINT32 AuthSessionSize;\r | |
70 | TPMI_YES_NO AllocationSuccess;\r | |
71 | UINT32 MaxPCR;\r | |
72 | UINT32 SizeNeeded;\r | |
73 | UINT32 SizeAvailable;\r | |
74 | TPMS_AUTH_RESPONSE AuthSession;\r | |
75 | } TPM2_PCR_ALLOCATE_RESPONSE;\r | |
76 | \r | |
77 | #pragma pack()\r | |
78 | \r | |
79 | /**\r | |
80 | This command is used to cause an update to the indicated PCR.\r | |
81 | The digests parameter contains one or more tagged digest value identified by an algorithm ID.\r | |
82 | For each digest, the PCR associated with pcrHandle is Extended into the bank identified by the tag (hashAlg).\r | |
83 | \r | |
84 | @param[in] PcrHandle Handle of the PCR\r | |
85 | @param[in] Digests List of tagged digest values to be extended\r | |
86 | \r | |
87 | @retval EFI_SUCCESS Operation completed successfully.\r | |
88 | @retval EFI_DEVICE_ERROR Unexpected device behavior.\r | |
89 | **/\r | |
90 | EFI_STATUS\r | |
91 | EFIAPI\r | |
92 | Tpm2PcrExtend (\r | |
93 | IN TPMI_DH_PCR PcrHandle,\r | |
94 | IN TPML_DIGEST_VALUES *Digests\r | |
95 | )\r | |
96 | {\r | |
97 | EFI_STATUS Status;\r | |
98 | TPM2_PCR_EXTEND_COMMAND Cmd;\r | |
99 | TPM2_PCR_EXTEND_RESPONSE Res;\r | |
100 | UINT32 CmdSize;\r | |
101 | UINT32 RespSize;\r | |
102 | UINT32 ResultBufSize;\r | |
103 | UINT8 *Buffer;\r | |
104 | UINTN Index;\r | |
105 | UINT32 SessionInfoSize;\r | |
106 | UINT16 DigestSize;\r | |
107 | \r | |
108 | Cmd.Header.tag = SwapBytes16(TPM_ST_SESSIONS);\r | |
109 | Cmd.Header.commandCode = SwapBytes32(TPM_CC_PCR_Extend);\r | |
110 | Cmd.PcrHandle = SwapBytes32(PcrHandle);\r | |
111 | \r | |
112 | \r | |
113 | //\r | |
114 | // Add in Auth session\r | |
115 | //\r | |
116 | Buffer = (UINT8 *)&Cmd.AuthSessionPcr;\r | |
b3548d32 | 117 | \r |
c1d93242 JY |
118 | // sessionInfoSize\r |
119 | SessionInfoSize = CopyAuthSessionCommand (NULL, Buffer);\r | |
120 | Buffer += SessionInfoSize;\r | |
121 | Cmd.AuthorizationSize = SwapBytes32(SessionInfoSize);\r | |
b3548d32 | 122 | \r |
c1d93242 JY |
123 | //Digest Count\r |
124 | WriteUnaligned32 ((UINT32 *)Buffer, SwapBytes32(Digests->count));\r | |
125 | Buffer += sizeof(UINT32);\r | |
b3548d32 | 126 | \r |
c1d93242 JY |
127 | //Digest\r |
128 | for (Index = 0; Index < Digests->count; Index++) {\r | |
129 | WriteUnaligned16 ((UINT16 *)Buffer, SwapBytes16(Digests->digests[Index].hashAlg));\r | |
130 | Buffer += sizeof(UINT16);\r | |
131 | DigestSize = GetHashSizeFromAlgo (Digests->digests[Index].hashAlg);\r | |
132 | if (DigestSize == 0) {\r | |
133 | DEBUG ((EFI_D_ERROR, "Unknown hash algorithm %d\r\n", Digests->digests[Index].hashAlg));\r | |
134 | return EFI_DEVICE_ERROR;\r | |
135 | }\r | |
136 | CopyMem(\r | |
137 | Buffer,\r | |
138 | &Digests->digests[Index].digest,\r | |
139 | DigestSize\r | |
140 | );\r | |
141 | Buffer += DigestSize;\r | |
142 | }\r | |
143 | \r | |
144 | CmdSize = (UINT32)((UINTN)Buffer - (UINTN)&Cmd);\r | |
145 | Cmd.Header.paramSize = SwapBytes32(CmdSize);\r | |
146 | \r | |
147 | ResultBufSize = sizeof(Res);\r | |
148 | Status = Tpm2SubmitCommand (CmdSize, (UINT8 *)&Cmd, &ResultBufSize, (UINT8 *)&Res);\r | |
149 | if (EFI_ERROR(Status)) {\r | |
150 | return Status;\r | |
151 | }\r | |
152 | \r | |
153 | if (ResultBufSize > sizeof(Res)) {\r | |
154 | DEBUG ((EFI_D_ERROR, "Tpm2PcrExtend: Failed ExecuteCommand: Buffer Too Small\r\n"));\r | |
155 | return EFI_BUFFER_TOO_SMALL;\r | |
156 | }\r | |
157 | \r | |
158 | //\r | |
159 | // Validate response headers\r | |
160 | //\r | |
161 | RespSize = SwapBytes32(Res.Header.paramSize);\r | |
162 | if (RespSize > sizeof(Res)) {\r | |
163 | DEBUG ((EFI_D_ERROR, "Tpm2PcrExtend: Response size too large! %d\r\n", RespSize));\r | |
164 | return EFI_BUFFER_TOO_SMALL;\r | |
165 | }\r | |
166 | \r | |
167 | //\r | |
168 | // Fail if command failed\r | |
169 | //\r | |
170 | if (SwapBytes32(Res.Header.responseCode) != TPM_RC_SUCCESS) {\r | |
171 | DEBUG ((EFI_D_ERROR, "Tpm2PcrExtend: Response Code error! 0x%08x\r\n", SwapBytes32(Res.Header.responseCode)));\r | |
172 | return EFI_DEVICE_ERROR;\r | |
173 | }\r | |
174 | \r | |
175 | //\r | |
176 | // Unmarshal the response\r | |
177 | //\r | |
178 | \r | |
179 | // None\r | |
180 | \r | |
181 | return EFI_SUCCESS;\r | |
182 | }\r | |
183 | \r | |
184 | /**\r | |
185 | This command is used to cause an update to the indicated PCR.\r | |
186 | The data in eventData is hashed using the hash algorithm associated with each bank in which the\r | |
187 | indicated PCR has been allocated. After the data is hashed, the digests list is returned. If the pcrHandle\r | |
188 | references an implemented PCR and not TPM_ALG_NULL, digests list is processed as in\r | |
189 | TPM2_PCR_Extend().\r | |
190 | A TPM shall support an Event.size of zero through 1,024 inclusive.\r | |
191 | \r | |
192 | @param[in] PcrHandle Handle of the PCR\r | |
193 | @param[in] EventData Event data in sized buffer\r | |
194 | @param[out] Digests List of digest\r | |
195 | \r | |
196 | @retval EFI_SUCCESS Operation completed successfully.\r | |
197 | @retval EFI_DEVICE_ERROR Unexpected device behavior.\r | |
198 | **/\r | |
199 | EFI_STATUS\r | |
200 | EFIAPI\r | |
201 | Tpm2PcrEvent (\r | |
202 | IN TPMI_DH_PCR PcrHandle,\r | |
203 | IN TPM2B_EVENT *EventData,\r | |
204 | OUT TPML_DIGEST_VALUES *Digests\r | |
205 | )\r | |
206 | {\r | |
207 | EFI_STATUS Status;\r | |
208 | TPM2_PCR_EVENT_COMMAND Cmd;\r | |
209 | TPM2_PCR_EVENT_RESPONSE Res;\r | |
210 | UINT32 CmdSize;\r | |
211 | UINT32 RespSize;\r | |
212 | UINT32 ResultBufSize;\r | |
213 | UINT8 *Buffer;\r | |
214 | UINTN Index;\r | |
215 | UINT32 SessionInfoSize;\r | |
216 | UINT16 DigestSize;\r | |
217 | \r | |
218 | Cmd.Header.tag = SwapBytes16(TPM_ST_SESSIONS);\r | |
219 | Cmd.Header.commandCode = SwapBytes32(TPM_CC_PCR_Event);\r | |
220 | Cmd.PcrHandle = SwapBytes32(PcrHandle);\r | |
221 | \r | |
222 | //\r | |
223 | // Add in Auth session\r | |
224 | //\r | |
225 | Buffer = (UINT8 *)&Cmd.AuthSessionPcr;\r | |
226 | \r | |
227 | // sessionInfoSize\r | |
228 | SessionInfoSize = CopyAuthSessionCommand (NULL, Buffer);\r | |
229 | Buffer += SessionInfoSize;\r | |
230 | Cmd.AuthorizationSize = SwapBytes32(SessionInfoSize);\r | |
231 | \r | |
232 | // Event\r | |
233 | WriteUnaligned16 ((UINT16 *)Buffer, SwapBytes16(EventData->size));\r | |
234 | Buffer += sizeof(UINT16);\r | |
235 | \r | |
236 | CopyMem (Buffer, EventData->buffer, EventData->size);\r | |
237 | Buffer += EventData->size;\r | |
b3548d32 | 238 | \r |
c1d93242 JY |
239 | CmdSize = (UINT32)((UINTN)Buffer - (UINTN)&Cmd);\r |
240 | Cmd.Header.paramSize = SwapBytes32(CmdSize);\r | |
241 | \r | |
242 | ResultBufSize = sizeof(Res);\r | |
243 | Status = Tpm2SubmitCommand (CmdSize, (UINT8 *)&Cmd, &ResultBufSize, (UINT8 *)&Res);\r | |
244 | if (EFI_ERROR(Status)) {\r | |
245 | return Status;\r | |
246 | }\r | |
247 | \r | |
248 | if (ResultBufSize > sizeof(Res)) {\r | |
249 | DEBUG ((EFI_D_ERROR, "Tpm2PcrEvent: Failed ExecuteCommand: Buffer Too Small\r\n"));\r | |
250 | return EFI_BUFFER_TOO_SMALL;\r | |
251 | }\r | |
252 | \r | |
253 | //\r | |
254 | // Validate response headers\r | |
255 | //\r | |
256 | RespSize = SwapBytes32(Res.Header.paramSize);\r | |
257 | if (RespSize > sizeof(Res)) {\r | |
258 | DEBUG ((EFI_D_ERROR, "Tpm2PcrEvent: Response size too large! %d\r\n", RespSize));\r | |
259 | return EFI_BUFFER_TOO_SMALL;\r | |
260 | }\r | |
261 | \r | |
262 | //\r | |
263 | // Fail if command failed\r | |
264 | //\r | |
265 | if (SwapBytes32(Res.Header.responseCode) != TPM_RC_SUCCESS) {\r | |
266 | DEBUG ((EFI_D_ERROR, "Tpm2PcrEvent: Response Code error! 0x%08x\r\n", SwapBytes32(Res.Header.responseCode)));\r | |
267 | return EFI_DEVICE_ERROR;\r | |
268 | }\r | |
269 | \r | |
270 | //\r | |
271 | // Unmarshal the response\r | |
272 | //\r | |
273 | Buffer = (UINT8 *)&Res.Digests;\r | |
274 | \r | |
275 | Digests->count = SwapBytes32 (ReadUnaligned32 ((UINT32 *)Buffer));\r | |
dd577319 ZC |
276 | if (Digests->count > HASH_COUNT) {\r |
277 | DEBUG ((DEBUG_ERROR, "Tpm2PcrEvent - Digests->count error %x\n", Digests->count));\r | |
278 | return EFI_DEVICE_ERROR;\r | |
279 | }\r | |
280 | \r | |
c1d93242 JY |
281 | Buffer += sizeof(UINT32);\r |
282 | for (Index = 0; Index < Digests->count; Index++) {\r | |
283 | Digests->digests[Index].hashAlg = SwapBytes16 (ReadUnaligned16 ((UINT16 *)Buffer));\r | |
284 | Buffer += sizeof(UINT16);\r | |
285 | DigestSize = GetHashSizeFromAlgo (Digests->digests[Index].hashAlg);\r | |
286 | if (DigestSize == 0) {\r | |
287 | DEBUG ((EFI_D_ERROR, "Unknown hash algorithm %d\r\n", Digests->digests[Index].hashAlg));\r | |
288 | return EFI_DEVICE_ERROR;\r | |
289 | }\r | |
290 | CopyMem(\r | |
291 | &Digests->digests[Index].digest,\r | |
292 | Buffer,\r | |
293 | DigestSize\r | |
294 | );\r | |
295 | Buffer += DigestSize;\r | |
296 | }\r | |
297 | \r | |
298 | return EFI_SUCCESS;\r | |
299 | }\r | |
300 | \r | |
301 | /**\r | |
302 | This command returns the values of all PCR specified in pcrSelect.\r | |
303 | \r | |
304 | @param[in] PcrSelectionIn The selection of PCR to read.\r | |
305 | @param[out] PcrUpdateCounter The current value of the PCR update counter.\r | |
306 | @param[out] PcrSelectionOut The PCR in the returned list.\r | |
307 | @param[out] PcrValues The contents of the PCR indicated in pcrSelect.\r | |
b3548d32 | 308 | \r |
c1d93242 JY |
309 | @retval EFI_SUCCESS Operation completed successfully.\r |
310 | @retval EFI_DEVICE_ERROR The command was unsuccessful.\r | |
311 | **/\r | |
312 | EFI_STATUS\r | |
313 | EFIAPI\r | |
314 | Tpm2PcrRead (\r | |
315 | IN TPML_PCR_SELECTION *PcrSelectionIn,\r | |
316 | OUT UINT32 *PcrUpdateCounter,\r | |
317 | OUT TPML_PCR_SELECTION *PcrSelectionOut,\r | |
318 | OUT TPML_DIGEST *PcrValues\r | |
319 | )\r | |
320 | {\r | |
321 | EFI_STATUS Status;\r | |
322 | TPM2_PCR_READ_COMMAND SendBuffer;\r | |
323 | TPM2_PCR_READ_RESPONSE RecvBuffer;\r | |
324 | UINT32 SendBufferSize;\r | |
325 | UINT32 RecvBufferSize;\r | |
326 | UINTN Index;\r | |
327 | TPML_DIGEST *PcrValuesOut;\r | |
328 | TPM2B_DIGEST *Digests;\r | |
329 | \r | |
330 | //\r | |
331 | // Construct command\r | |
332 | //\r | |
333 | SendBuffer.Header.tag = SwapBytes16(TPM_ST_NO_SESSIONS);\r | |
334 | SendBuffer.Header.commandCode = SwapBytes32(TPM_CC_PCR_Read);\r | |
b3548d32 | 335 | \r |
c1d93242 JY |
336 | SendBuffer.PcrSelectionIn.count = SwapBytes32(PcrSelectionIn->count);\r |
337 | for (Index = 0; Index < PcrSelectionIn->count; Index++) {\r | |
338 | SendBuffer.PcrSelectionIn.pcrSelections[Index].hash = SwapBytes16(PcrSelectionIn->pcrSelections[Index].hash);\r | |
339 | SendBuffer.PcrSelectionIn.pcrSelections[Index].sizeofSelect = PcrSelectionIn->pcrSelections[Index].sizeofSelect;\r | |
340 | CopyMem (&SendBuffer.PcrSelectionIn.pcrSelections[Index].pcrSelect, &PcrSelectionIn->pcrSelections[Index].pcrSelect, SendBuffer.PcrSelectionIn.pcrSelections[Index].sizeofSelect);\r | |
341 | }\r | |
342 | \r | |
343 | SendBufferSize = sizeof(SendBuffer.Header) + sizeof(SendBuffer.PcrSelectionIn.count) + sizeof(SendBuffer.PcrSelectionIn.pcrSelections[0]) * PcrSelectionIn->count;\r | |
344 | SendBuffer.Header.paramSize = SwapBytes32 (SendBufferSize);\r | |
345 | \r | |
346 | //\r | |
347 | // send Tpm command\r | |
348 | //\r | |
349 | RecvBufferSize = sizeof (RecvBuffer);\r | |
350 | Status = Tpm2SubmitCommand (SendBufferSize, (UINT8 *)&SendBuffer, &RecvBufferSize, (UINT8 *)&RecvBuffer);\r | |
351 | if (EFI_ERROR (Status)) {\r | |
352 | return Status;\r | |
353 | }\r | |
354 | \r | |
355 | if (RecvBufferSize < sizeof (TPM2_RESPONSE_HEADER)) {\r | |
356 | DEBUG ((EFI_D_ERROR, "Tpm2PcrRead - RecvBufferSize Error - %x\n", RecvBufferSize));\r | |
357 | return EFI_DEVICE_ERROR;\r | |
358 | }\r | |
359 | if (SwapBytes32(RecvBuffer.Header.responseCode) != TPM_RC_SUCCESS) {\r | |
360 | DEBUG ((EFI_D_ERROR, "Tpm2PcrRead - responseCode - %x\n", SwapBytes32(RecvBuffer.Header.responseCode)));\r | |
361 | return EFI_NOT_FOUND;\r | |
362 | }\r | |
363 | \r | |
364 | //\r | |
365 | // Return the response\r | |
366 | //\r | |
367 | \r | |
368 | //\r | |
369 | // PcrUpdateCounter\r | |
370 | //\r | |
371 | if (RecvBufferSize < sizeof (TPM2_RESPONSE_HEADER) + sizeof(RecvBuffer.PcrUpdateCounter)) {\r | |
372 | DEBUG ((EFI_D_ERROR, "Tpm2PcrRead - RecvBufferSize Error - %x\n", RecvBufferSize));\r | |
373 | return EFI_DEVICE_ERROR;\r | |
374 | }\r | |
375 | *PcrUpdateCounter = SwapBytes32(RecvBuffer.PcrUpdateCounter);\r | |
376 | \r | |
377 | //\r | |
378 | // PcrSelectionOut\r | |
379 | //\r | |
380 | if (RecvBufferSize < sizeof (TPM2_RESPONSE_HEADER) + sizeof(RecvBuffer.PcrUpdateCounter) + sizeof(RecvBuffer.PcrSelectionOut.count)) {\r | |
381 | DEBUG ((EFI_D_ERROR, "Tpm2PcrRead - RecvBufferSize Error - %x\n", RecvBufferSize));\r | |
382 | return EFI_DEVICE_ERROR;\r | |
383 | }\r | |
384 | PcrSelectionOut->count = SwapBytes32(RecvBuffer.PcrSelectionOut.count);\r | |
dd577319 ZC |
385 | if (PcrSelectionOut->count > HASH_COUNT) {\r |
386 | DEBUG ((DEBUG_ERROR, "Tpm2PcrRead - PcrSelectionOut->count error %x\n", PcrSelectionOut->count));\r | |
387 | return EFI_DEVICE_ERROR;\r | |
388 | }\r | |
389 | \r | |
c1d93242 JY |
390 | if (RecvBufferSize < sizeof (TPM2_RESPONSE_HEADER) + sizeof(RecvBuffer.PcrUpdateCounter) + sizeof(RecvBuffer.PcrSelectionOut.count) + sizeof(RecvBuffer.PcrSelectionOut.pcrSelections[0]) * PcrSelectionOut->count) {\r |
391 | DEBUG ((EFI_D_ERROR, "Tpm2PcrRead - RecvBufferSize Error - %x\n", RecvBufferSize));\r | |
392 | return EFI_DEVICE_ERROR;\r | |
393 | }\r | |
394 | for (Index = 0; Index < PcrSelectionOut->count; Index++) {\r | |
395 | PcrSelectionOut->pcrSelections[Index].hash = SwapBytes16(RecvBuffer.PcrSelectionOut.pcrSelections[Index].hash);\r | |
396 | PcrSelectionOut->pcrSelections[Index].sizeofSelect = RecvBuffer.PcrSelectionOut.pcrSelections[Index].sizeofSelect;\r | |
dd577319 ZC |
397 | if (PcrSelectionOut->pcrSelections[Index].sizeofSelect > PCR_SELECT_MAX) {\r |
398 | return EFI_DEVICE_ERROR;\r | |
399 | }\r | |
c1d93242 JY |
400 | CopyMem (&PcrSelectionOut->pcrSelections[Index].pcrSelect, &RecvBuffer.PcrSelectionOut.pcrSelections[Index].pcrSelect, PcrSelectionOut->pcrSelections[Index].sizeofSelect);\r |
401 | }\r | |
402 | \r | |
403 | //\r | |
404 | // PcrValues\r | |
405 | //\r | |
406 | PcrValuesOut = (TPML_DIGEST *)((UINT8 *)&RecvBuffer + sizeof (TPM2_RESPONSE_HEADER) + sizeof(RecvBuffer.PcrUpdateCounter) + sizeof(RecvBuffer.PcrSelectionOut.count) + sizeof(RecvBuffer.PcrSelectionOut.pcrSelections[0]) * PcrSelectionOut->count);\r | |
407 | PcrValues->count = SwapBytes32(PcrValuesOut->count);\r | |
dd577319 ZC |
408 | //\r |
409 | // The number of digests in list is not greater than 8 per TPML_DIGEST definition\r | |
410 | //\r | |
411 | if (PcrValues->count > 8) {\r | |
412 | DEBUG ((DEBUG_ERROR, "Tpm2PcrRead - PcrValues->count error %x\n", PcrValues->count));\r | |
413 | return EFI_DEVICE_ERROR;\r | |
414 | }\r | |
c1d93242 JY |
415 | Digests = PcrValuesOut->digests;\r |
416 | for (Index = 0; Index < PcrValues->count; Index++) {\r | |
417 | PcrValues->digests[Index].size = SwapBytes16(Digests->size);\r | |
dd577319 ZC |
418 | if (PcrValues->digests[Index].size > sizeof(TPMU_HA)) {\r |
419 | DEBUG ((DEBUG_ERROR, "Tpm2PcrRead - Digest.size error %x\n", PcrValues->digests[Index].size));\r | |
420 | return EFI_DEVICE_ERROR;\r | |
421 | }\r | |
c1d93242 JY |
422 | CopyMem (&PcrValues->digests[Index].buffer, &Digests->buffer, PcrValues->digests[Index].size);\r |
423 | Digests = (TPM2B_DIGEST *)((UINT8 *)Digests + sizeof(Digests->size) + PcrValues->digests[Index].size);\r | |
424 | }\r | |
425 | \r | |
426 | return EFI_SUCCESS;\r | |
427 | }\r | |
428 | \r | |
429 | /**\r | |
430 | This command is used to set the desired PCR allocation of PCR and algorithms.\r | |
431 | \r | |
432 | @param[in] AuthHandle TPM_RH_PLATFORM+{PP}\r | |
433 | @param[in] AuthSession Auth Session context\r | |
434 | @param[in] PcrAllocation The requested allocation\r | |
435 | @param[out] AllocationSuccess YES if the allocation succeeded\r | |
436 | @param[out] MaxPCR maximum number of PCR that may be in a bank\r | |
437 | @param[out] SizeNeeded number of octets required to satisfy the request\r | |
438 | @param[out] SizeAvailable Number of octets available. Computed before the allocation\r | |
b3548d32 | 439 | \r |
c1d93242 JY |
440 | @retval EFI_SUCCESS Operation completed successfully.\r |
441 | @retval EFI_DEVICE_ERROR The command was unsuccessful.\r | |
442 | **/\r | |
443 | EFI_STATUS\r | |
444 | EFIAPI\r | |
445 | Tpm2PcrAllocate (\r | |
446 | IN TPMI_RH_PLATFORM AuthHandle,\r | |
447 | IN TPMS_AUTH_COMMAND *AuthSession,\r | |
448 | IN TPML_PCR_SELECTION *PcrAllocation,\r | |
449 | OUT TPMI_YES_NO *AllocationSuccess,\r | |
450 | OUT UINT32 *MaxPCR,\r | |
451 | OUT UINT32 *SizeNeeded,\r | |
452 | OUT UINT32 *SizeAvailable\r | |
453 | )\r | |
454 | {\r | |
455 | EFI_STATUS Status;\r | |
456 | TPM2_PCR_ALLOCATE_COMMAND Cmd;\r | |
457 | TPM2_PCR_ALLOCATE_RESPONSE Res;\r | |
458 | UINT32 CmdSize;\r | |
459 | UINT32 RespSize;\r | |
460 | UINT8 *Buffer;\r | |
461 | UINT32 SessionInfoSize;\r | |
462 | UINT8 *ResultBuf;\r | |
463 | UINT32 ResultBufSize;\r | |
464 | UINTN Index;\r | |
465 | \r | |
466 | //\r | |
467 | // Construct command\r | |
468 | //\r | |
469 | Cmd.Header.tag = SwapBytes16(TPM_ST_SESSIONS);\r | |
470 | Cmd.Header.paramSize = SwapBytes32(sizeof(Cmd));\r | |
471 | Cmd.Header.commandCode = SwapBytes32(TPM_CC_PCR_Allocate);\r | |
472 | Cmd.AuthHandle = SwapBytes32(AuthHandle);\r | |
473 | \r | |
474 | //\r | |
475 | // Add in Auth session\r | |
476 | //\r | |
477 | Buffer = (UINT8 *)&Cmd.AuthSession;\r | |
478 | \r | |
479 | // sessionInfoSize\r | |
480 | SessionInfoSize = CopyAuthSessionCommand (AuthSession, Buffer);\r | |
481 | Buffer += SessionInfoSize;\r | |
482 | Cmd.AuthSessionSize = SwapBytes32(SessionInfoSize);\r | |
483 | \r | |
484 | // Count\r | |
485 | WriteUnaligned32 ((UINT32 *)Buffer, SwapBytes32(PcrAllocation->count));\r | |
486 | Buffer += sizeof(UINT32);\r | |
487 | for (Index = 0; Index < PcrAllocation->count; Index++) {\r | |
488 | WriteUnaligned16 ((UINT16 *)Buffer, SwapBytes16(PcrAllocation->pcrSelections[Index].hash));\r | |
489 | Buffer += sizeof(UINT16);\r | |
490 | *(UINT8 *)Buffer = PcrAllocation->pcrSelections[Index].sizeofSelect;\r | |
58dbfc3c | 491 | Buffer++;\r |
c1d93242 JY |
492 | CopyMem (Buffer, PcrAllocation->pcrSelections[Index].pcrSelect, PcrAllocation->pcrSelections[Index].sizeofSelect);\r |
493 | Buffer += PcrAllocation->pcrSelections[Index].sizeofSelect;\r | |
494 | }\r | |
495 | \r | |
496 | CmdSize = (UINT32)(Buffer - (UINT8 *)&Cmd);\r | |
497 | Cmd.Header.paramSize = SwapBytes32(CmdSize);\r | |
498 | \r | |
499 | ResultBuf = (UINT8 *) &Res;\r | |
500 | ResultBufSize = sizeof(Res);\r | |
501 | \r | |
502 | //\r | |
503 | // Call the TPM\r | |
504 | //\r | |
505 | Status = Tpm2SubmitCommand (\r | |
b3548d32 LG |
506 | CmdSize,\r |
507 | (UINT8 *)&Cmd,\r | |
c1d93242 JY |
508 | &ResultBufSize,\r |
509 | ResultBuf\r | |
510 | );\r | |
7ae130da JY |
511 | if (EFI_ERROR(Status)) {\r |
512 | goto Done;\r | |
513 | }\r | |
c1d93242 JY |
514 | \r |
515 | if (ResultBufSize > sizeof(Res)) {\r | |
516 | DEBUG ((EFI_D_ERROR, "Tpm2PcrAllocate: Failed ExecuteCommand: Buffer Too Small\r\n"));\r | |
7ae130da JY |
517 | Status = EFI_BUFFER_TOO_SMALL;\r |
518 | goto Done;\r | |
c1d93242 JY |
519 | }\r |
520 | \r | |
521 | //\r | |
522 | // Validate response headers\r | |
523 | //\r | |
524 | RespSize = SwapBytes32(Res.Header.paramSize);\r | |
525 | if (RespSize > sizeof(Res)) {\r | |
526 | DEBUG ((EFI_D_ERROR, "Tpm2PcrAllocate: Response size too large! %d\r\n", RespSize));\r | |
7ae130da JY |
527 | Status = EFI_BUFFER_TOO_SMALL;\r |
528 | goto Done;\r | |
c1d93242 JY |
529 | }\r |
530 | \r | |
531 | //\r | |
532 | // Fail if command failed\r | |
533 | //\r | |
534 | if (SwapBytes32(Res.Header.responseCode) != TPM_RC_SUCCESS) {\r | |
535 | DEBUG((EFI_D_ERROR,"Tpm2PcrAllocate: Response Code error! 0x%08x\r\n", SwapBytes32(Res.Header.responseCode)));\r | |
7ae130da JY |
536 | Status = EFI_DEVICE_ERROR;\r |
537 | goto Done;\r | |
c1d93242 JY |
538 | }\r |
539 | \r | |
540 | //\r | |
541 | // Return the response\r | |
542 | //\r | |
543 | *AllocationSuccess = Res.AllocationSuccess;\r | |
544 | *MaxPCR = SwapBytes32(Res.MaxPCR);\r | |
545 | *SizeNeeded = SwapBytes32(Res.SizeNeeded);\r | |
546 | *SizeAvailable = SwapBytes32(Res.SizeAvailable);\r | |
547 | \r | |
7ae130da JY |
548 | Done:\r |
549 | //\r | |
550 | // Clear AuthSession Content\r | |
551 | //\r | |
552 | ZeroMem (&Cmd, sizeof(Cmd));\r | |
553 | ZeroMem (&Res, sizeof(Res));\r | |
554 | return Status;\r | |
c1d93242 | 555 | }\r |
f9c9a140 JY |
556 | \r |
557 | /**\r | |
558 | Alloc PCR data.\r | |
559 | \r | |
560 | @param[in] PlatformAuth platform auth value. NULL means no platform auth change.\r | |
561 | @param[in] SupportedPCRBanks Supported PCR banks\r | |
562 | @param[in] PCRBanks PCR banks\r | |
b3548d32 | 563 | \r |
f9c9a140 JY |
564 | @retval EFI_SUCCESS Operation completed successfully.\r |
565 | **/\r | |
566 | EFI_STATUS\r | |
567 | EFIAPI\r | |
568 | Tpm2PcrAllocateBanks (\r | |
569 | IN TPM2B_AUTH *PlatformAuth, OPTIONAL\r | |
570 | IN UINT32 SupportedPCRBanks,\r | |
571 | IN UINT32 PCRBanks\r | |
572 | )\r | |
573 | {\r | |
574 | EFI_STATUS Status;\r | |
575 | TPMS_AUTH_COMMAND *AuthSession;\r | |
576 | TPMS_AUTH_COMMAND LocalAuthSession;\r | |
577 | TPML_PCR_SELECTION PcrAllocation;\r | |
578 | TPMI_YES_NO AllocationSuccess;\r | |
579 | UINT32 MaxPCR;\r | |
580 | UINT32 SizeNeeded;\r | |
581 | UINT32 SizeAvailable;\r | |
582 | \r | |
583 | if (PlatformAuth == NULL) {\r | |
584 | AuthSession = NULL;\r | |
585 | } else {\r | |
586 | AuthSession = &LocalAuthSession;\r | |
587 | ZeroMem (&LocalAuthSession, sizeof(LocalAuthSession));\r | |
588 | LocalAuthSession.sessionHandle = TPM_RS_PW;\r | |
589 | LocalAuthSession.hmac.size = PlatformAuth->size;\r | |
590 | CopyMem (LocalAuthSession.hmac.buffer, PlatformAuth->buffer, PlatformAuth->size);\r | |
591 | }\r | |
592 | \r | |
593 | //\r | |
594 | // Fill input\r | |
595 | //\r | |
596 | ZeroMem (&PcrAllocation, sizeof(PcrAllocation));\r | |
597 | if ((HASH_ALG_SHA1 & SupportedPCRBanks) != 0) {\r | |
598 | PcrAllocation.pcrSelections[PcrAllocation.count].hash = TPM_ALG_SHA1;\r | |
599 | PcrAllocation.pcrSelections[PcrAllocation.count].sizeofSelect = PCR_SELECT_MAX;\r | |
600 | if ((HASH_ALG_SHA1 & PCRBanks) != 0) {\r | |
601 | PcrAllocation.pcrSelections[PcrAllocation.count].pcrSelect[0] = 0xFF;\r | |
602 | PcrAllocation.pcrSelections[PcrAllocation.count].pcrSelect[1] = 0xFF;\r | |
603 | PcrAllocation.pcrSelections[PcrAllocation.count].pcrSelect[2] = 0xFF;\r | |
604 | } else {\r | |
605 | PcrAllocation.pcrSelections[PcrAllocation.count].pcrSelect[0] = 0x00;\r | |
606 | PcrAllocation.pcrSelections[PcrAllocation.count].pcrSelect[1] = 0x00;\r | |
607 | PcrAllocation.pcrSelections[PcrAllocation.count].pcrSelect[2] = 0x00;\r | |
608 | }\r | |
609 | PcrAllocation.count++;\r | |
610 | }\r | |
611 | if ((HASH_ALG_SHA256 & SupportedPCRBanks) != 0) {\r | |
612 | PcrAllocation.pcrSelections[PcrAllocation.count].hash = TPM_ALG_SHA256;\r | |
613 | PcrAllocation.pcrSelections[PcrAllocation.count].sizeofSelect = PCR_SELECT_MAX;\r | |
614 | if ((HASH_ALG_SHA256 & PCRBanks) != 0) {\r | |
615 | PcrAllocation.pcrSelections[PcrAllocation.count].pcrSelect[0] = 0xFF;\r | |
616 | PcrAllocation.pcrSelections[PcrAllocation.count].pcrSelect[1] = 0xFF;\r | |
617 | PcrAllocation.pcrSelections[PcrAllocation.count].pcrSelect[2] = 0xFF;\r | |
618 | } else {\r | |
619 | PcrAllocation.pcrSelections[PcrAllocation.count].pcrSelect[0] = 0x00;\r | |
620 | PcrAllocation.pcrSelections[PcrAllocation.count].pcrSelect[1] = 0x00;\r | |
621 | PcrAllocation.pcrSelections[PcrAllocation.count].pcrSelect[2] = 0x00;\r | |
622 | }\r | |
623 | PcrAllocation.count++;\r | |
624 | }\r | |
625 | if ((HASH_ALG_SHA384 & SupportedPCRBanks) != 0) {\r | |
626 | PcrAllocation.pcrSelections[PcrAllocation.count].hash = TPM_ALG_SHA384;\r | |
627 | PcrAllocation.pcrSelections[PcrAllocation.count].sizeofSelect = PCR_SELECT_MAX;\r | |
628 | if ((HASH_ALG_SHA384 & PCRBanks) != 0) {\r | |
629 | PcrAllocation.pcrSelections[PcrAllocation.count].pcrSelect[0] = 0xFF;\r | |
630 | PcrAllocation.pcrSelections[PcrAllocation.count].pcrSelect[1] = 0xFF;\r | |
631 | PcrAllocation.pcrSelections[PcrAllocation.count].pcrSelect[2] = 0xFF;\r | |
632 | } else {\r | |
633 | PcrAllocation.pcrSelections[PcrAllocation.count].pcrSelect[0] = 0x00;\r | |
634 | PcrAllocation.pcrSelections[PcrAllocation.count].pcrSelect[1] = 0x00;\r | |
635 | PcrAllocation.pcrSelections[PcrAllocation.count].pcrSelect[2] = 0x00;\r | |
636 | }\r | |
637 | PcrAllocation.count++;\r | |
638 | }\r | |
639 | if ((HASH_ALG_SHA512 & SupportedPCRBanks) != 0) {\r | |
640 | PcrAllocation.pcrSelections[PcrAllocation.count].hash = TPM_ALG_SHA512;\r | |
641 | PcrAllocation.pcrSelections[PcrAllocation.count].sizeofSelect = PCR_SELECT_MAX;\r | |
642 | if ((HASH_ALG_SHA512 & PCRBanks) != 0) {\r | |
643 | PcrAllocation.pcrSelections[PcrAllocation.count].pcrSelect[0] = 0xFF;\r | |
644 | PcrAllocation.pcrSelections[PcrAllocation.count].pcrSelect[1] = 0xFF;\r | |
645 | PcrAllocation.pcrSelections[PcrAllocation.count].pcrSelect[2] = 0xFF;\r | |
646 | } else {\r | |
647 | PcrAllocation.pcrSelections[PcrAllocation.count].pcrSelect[0] = 0x00;\r | |
648 | PcrAllocation.pcrSelections[PcrAllocation.count].pcrSelect[1] = 0x00;\r | |
649 | PcrAllocation.pcrSelections[PcrAllocation.count].pcrSelect[2] = 0x00;\r | |
650 | }\r | |
651 | PcrAllocation.count++;\r | |
652 | }\r | |
653 | if ((HASH_ALG_SM3_256 & SupportedPCRBanks) != 0) {\r | |
654 | PcrAllocation.pcrSelections[PcrAllocation.count].hash = TPM_ALG_SM3_256;\r | |
655 | PcrAllocation.pcrSelections[PcrAllocation.count].sizeofSelect = PCR_SELECT_MAX;\r | |
656 | if ((HASH_ALG_SM3_256 & PCRBanks) != 0) {\r | |
657 | PcrAllocation.pcrSelections[PcrAllocation.count].pcrSelect[0] = 0xFF;\r | |
658 | PcrAllocation.pcrSelections[PcrAllocation.count].pcrSelect[1] = 0xFF;\r | |
659 | PcrAllocation.pcrSelections[PcrAllocation.count].pcrSelect[2] = 0xFF;\r | |
660 | } else {\r | |
661 | PcrAllocation.pcrSelections[PcrAllocation.count].pcrSelect[0] = 0x00;\r | |
662 | PcrAllocation.pcrSelections[PcrAllocation.count].pcrSelect[1] = 0x00;\r | |
663 | PcrAllocation.pcrSelections[PcrAllocation.count].pcrSelect[2] = 0x00;\r | |
664 | }\r | |
665 | PcrAllocation.count++;\r | |
666 | }\r | |
667 | Status = Tpm2PcrAllocate (\r | |
668 | TPM_RH_PLATFORM,\r | |
669 | AuthSession,\r | |
670 | &PcrAllocation,\r | |
671 | &AllocationSuccess,\r | |
672 | &MaxPCR,\r | |
673 | &SizeNeeded,\r | |
674 | &SizeAvailable\r | |
675 | );\r | |
676 | DEBUG ((EFI_D_INFO, "Tpm2PcrAllocateBanks call Tpm2PcrAllocate - %r\n", Status));\r | |
677 | if (EFI_ERROR (Status)) {\r | |
678 | goto Done;\r | |
679 | }\r | |
680 | \r | |
681 | DEBUG ((EFI_D_INFO, "AllocationSuccess - %02x\n", AllocationSuccess));\r | |
682 | DEBUG ((EFI_D_INFO, "MaxPCR - %08x\n", MaxPCR));\r | |
683 | DEBUG ((EFI_D_INFO, "SizeNeeded - %08x\n", SizeNeeded));\r | |
684 | DEBUG ((EFI_D_INFO, "SizeAvailable - %08x\n", SizeAvailable));\r | |
685 | \r | |
686 | Done:\r | |
687 | ZeroMem(&LocalAuthSession.hmac, sizeof(LocalAuthSession.hmac));\r | |
688 | return Status;\r | |
b3548d32 | 689 | }\r |