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c1d93242 JY |
1 | /** @file\r |
2 | Implement TPM2 Sequences 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 | TPM2B_AUTH Auth;\r | |
21 | TPMI_ALG_HASH HashAlg;\r | |
22 | } TPM2_HASH_SEQUENCE_START_COMMAND;\r | |
23 | \r | |
24 | typedef struct {\r | |
25 | TPM2_RESPONSE_HEADER Header;\r | |
26 | TPMI_DH_OBJECT SequenceHandle;\r | |
27 | } TPM2_HASH_SEQUENCE_START_RESPONSE;\r | |
28 | \r | |
29 | typedef struct {\r | |
30 | TPM2_COMMAND_HEADER Header;\r | |
31 | TPMI_DH_OBJECT SequenceHandle;\r | |
32 | UINT32 AuthorizationSize;\r | |
33 | TPMS_AUTH_COMMAND AuthSessionSeq;\r | |
34 | TPM2B_MAX_BUFFER Buffer;\r | |
35 | } TPM2_SEQUENCE_UPDATE_COMMAND;\r | |
36 | \r | |
37 | typedef struct {\r | |
38 | TPM2_RESPONSE_HEADER Header;\r | |
39 | UINT32 ParameterSize;\r | |
40 | TPMS_AUTH_RESPONSE AuthSessionSeq;\r | |
41 | } TPM2_SEQUENCE_UPDATE_RESPONSE;\r | |
42 | \r | |
43 | typedef struct {\r | |
44 | TPM2_COMMAND_HEADER Header;\r | |
45 | TPMI_DH_PCR PcrHandle;\r | |
46 | TPMI_DH_OBJECT SequenceHandle;\r | |
47 | UINT32 AuthorizationSize;\r | |
48 | TPMS_AUTH_COMMAND AuthSessionPcr;\r | |
49 | TPMS_AUTH_COMMAND AuthSessionSeq;\r | |
50 | TPM2B_MAX_BUFFER Buffer;\r | |
51 | } TPM2_EVENT_SEQUENCE_COMPLETE_COMMAND;\r | |
52 | \r | |
53 | typedef struct {\r | |
54 | TPM2_RESPONSE_HEADER Header;\r | |
55 | UINT32 ParameterSize;\r | |
56 | TPML_DIGEST_VALUES Results;\r | |
57 | TPMS_AUTH_RESPONSE AuthSessionPcr;\r | |
58 | TPMS_AUTH_RESPONSE AuthSessionSeq;\r | |
59 | } TPM2_EVENT_SEQUENCE_COMPLETE_RESPONSE;\r | |
60 | \r | |
61 | typedef struct {\r | |
62 | TPM2_COMMAND_HEADER Header;\r | |
63 | TPMI_DH_OBJECT SequenceHandle;\r | |
64 | UINT32 AuthorizationSize;\r | |
65 | TPMS_AUTH_COMMAND AuthSessionSeq;\r | |
66 | TPM2B_MAX_BUFFER Buffer;\r | |
67 | TPMI_RH_HIERARCHY Hierarchy;\r | |
68 | } TPM2_SEQUENCE_COMPLETE_COMMAND;\r | |
69 | \r | |
70 | typedef struct {\r | |
71 | TPM2_RESPONSE_HEADER Header;\r | |
72 | UINT32 ParameterSize;\r | |
73 | TPM2B_DIGEST Digest;\r | |
74 | TPMS_AUTH_RESPONSE AuthSessionSeq;\r | |
75 | } TPM2_SEQUENCE_COMPLETE_RESPONSE;\r | |
76 | \r | |
77 | #pragma pack()\r | |
78 | \r | |
79 | /**\r | |
80 | This command starts a hash or an Event sequence.\r | |
81 | If hashAlg is an implemented hash, then a hash sequence is started.\r | |
82 | If hashAlg is TPM_ALG_NULL, then an Event sequence is started.\r | |
83 | \r | |
84 | @param[in] HashAlg The hash algorithm to use for the hash sequence\r | |
85 | An Event sequence starts if this is TPM_ALG_NULL.\r | |
86 | @param[out] SequenceHandle A handle to reference the sequence\r | |
b3548d32 | 87 | \r |
c1d93242 JY |
88 | @retval EFI_SUCCESS Operation completed successfully.\r |
89 | @retval EFI_DEVICE_ERROR Unexpected device behavior.\r | |
90 | **/\r | |
91 | EFI_STATUS\r | |
92 | EFIAPI\r | |
93 | Tpm2HashSequenceStart (\r | |
94 | IN TPMI_ALG_HASH HashAlg,\r | |
95 | OUT TPMI_DH_OBJECT *SequenceHandle\r | |
96 | )\r | |
97 | {\r | |
98 | EFI_STATUS Status;\r | |
99 | TPM2_HASH_SEQUENCE_START_COMMAND Cmd;\r | |
100 | TPM2_HASH_SEQUENCE_START_RESPONSE Res;\r | |
101 | UINT32 CmdSize;\r | |
102 | UINT32 RespSize;\r | |
103 | UINT8 *Buffer;\r | |
104 | UINT32 ResultBufSize;\r | |
105 | \r | |
106 | ZeroMem(&Cmd, sizeof(Cmd));\r | |
107 | \r | |
108 | //\r | |
109 | // Construct command\r | |
110 | //\r | |
111 | Cmd.Header.tag = SwapBytes16(TPM_ST_NO_SESSIONS);\r | |
112 | Cmd.Header.commandCode = SwapBytes32(TPM_CC_HashSequenceStart);\r | |
113 | \r | |
114 | Buffer = (UINT8 *)&Cmd.Auth;\r | |
115 | \r | |
116 | // auth = nullAuth\r | |
117 | WriteUnaligned16 ((UINT16 *)Buffer, SwapBytes16(0));\r | |
118 | Buffer += sizeof(UINT16);\r | |
119 | \r | |
120 | // hashAlg\r | |
121 | WriteUnaligned16 ((UINT16 *)Buffer, SwapBytes16(HashAlg));\r | |
122 | Buffer += sizeof(UINT16);\r | |
123 | \r | |
124 | CmdSize = (UINT32)(Buffer - (UINT8 *)&Cmd);\r | |
125 | Cmd.Header.paramSize = SwapBytes32(CmdSize);\r | |
126 | \r | |
127 | //\r | |
128 | // Call the TPM\r | |
129 | //\r | |
130 | ResultBufSize = sizeof(Res);\r | |
131 | Status = Tpm2SubmitCommand (CmdSize, (UINT8 *)&Cmd, &ResultBufSize, (UINT8 *)&Res);\r | |
132 | if (EFI_ERROR(Status)) {\r | |
133 | return Status;\r | |
134 | }\r | |
135 | \r | |
136 | if (ResultBufSize > sizeof(Res)) {\r | |
e905fbb0 | 137 | DEBUG ((DEBUG_ERROR, "HashSequenceStart: Failed ExecuteCommand: Buffer Too Small\r\n"));\r |
c1d93242 JY |
138 | return EFI_BUFFER_TOO_SMALL;\r |
139 | }\r | |
140 | \r | |
141 | //\r | |
142 | // Validate response headers\r | |
143 | //\r | |
144 | RespSize = SwapBytes32(Res.Header.paramSize);\r | |
145 | if (RespSize > sizeof(Res)) {\r | |
e905fbb0 | 146 | DEBUG ((DEBUG_ERROR, "HashSequenceStart: Response size too large! %d\r\n", RespSize));\r |
c1d93242 JY |
147 | return EFI_BUFFER_TOO_SMALL;\r |
148 | }\r | |
149 | \r | |
150 | //\r | |
151 | // Fail if command failed\r | |
152 | //\r | |
153 | if (SwapBytes32(Res.Header.responseCode) != TPM_RC_SUCCESS) {\r | |
e905fbb0 | 154 | DEBUG ((DEBUG_ERROR, "HashSequenceStart: Response Code error! 0x%08x\r\n", SwapBytes32(Res.Header.responseCode)));\r |
c1d93242 JY |
155 | return EFI_DEVICE_ERROR;\r |
156 | }\r | |
157 | \r | |
158 | //\r | |
159 | // Unmarshal the response\r | |
160 | //\r | |
161 | \r | |
162 | // sequenceHandle\r | |
163 | *SequenceHandle = SwapBytes32(Res.SequenceHandle);\r | |
164 | \r | |
165 | return EFI_SUCCESS;\r | |
166 | }\r | |
167 | \r | |
168 | /**\r | |
169 | This command is used to add data to a hash or HMAC sequence.\r | |
170 | The amount of data in buffer may be any size up to the limits of the TPM.\r | |
171 | NOTE: In all TPM, a buffer size of 1,024 octets is allowed.\r | |
172 | \r | |
173 | @param[in] SequenceHandle Handle for the sequence object\r | |
174 | @param[in] Buffer Data to be added to hash\r | |
b3548d32 | 175 | \r |
c1d93242 JY |
176 | @retval EFI_SUCCESS Operation completed successfully.\r |
177 | @retval EFI_DEVICE_ERROR Unexpected device behavior.\r | |
178 | **/\r | |
179 | EFI_STATUS\r | |
180 | EFIAPI\r | |
181 | Tpm2SequenceUpdate (\r | |
182 | IN TPMI_DH_OBJECT SequenceHandle,\r | |
183 | IN TPM2B_MAX_BUFFER *Buffer\r | |
184 | )\r | |
185 | {\r | |
186 | EFI_STATUS Status;\r | |
187 | TPM2_SEQUENCE_UPDATE_COMMAND Cmd;\r | |
188 | TPM2_SEQUENCE_UPDATE_RESPONSE Res;\r | |
189 | UINT32 CmdSize;\r | |
190 | UINT32 RespSize;\r | |
191 | UINT8 *BufferPtr;\r | |
192 | UINT32 SessionInfoSize;\r | |
193 | UINT32 ResultBufSize;\r | |
194 | \r | |
195 | ZeroMem(&Cmd, sizeof(Cmd));\r | |
196 | \r | |
197 | //\r | |
198 | // Construct command\r | |
199 | //\r | |
200 | Cmd.Header.tag = SwapBytes16(TPM_ST_SESSIONS);\r | |
201 | Cmd.Header.commandCode = SwapBytes32(TPM_CC_SequenceUpdate);\r | |
202 | Cmd.SequenceHandle = SwapBytes32(SequenceHandle);\r | |
203 | \r | |
204 | //\r | |
205 | // Add in Auth session\r | |
206 | //\r | |
207 | BufferPtr = (UINT8 *)&Cmd.AuthSessionSeq;\r | |
208 | \r | |
209 | // sessionInfoSize\r | |
210 | SessionInfoSize = CopyAuthSessionCommand (NULL, BufferPtr);\r | |
211 | BufferPtr += SessionInfoSize;\r | |
212 | Cmd.AuthorizationSize = SwapBytes32(SessionInfoSize);\r | |
213 | \r | |
214 | // buffer.size\r | |
215 | WriteUnaligned16 ((UINT16 *)BufferPtr, SwapBytes16(Buffer->size));\r | |
216 | BufferPtr += sizeof(UINT16);\r | |
217 | \r | |
218 | CopyMem(BufferPtr, &Buffer->buffer, Buffer->size);\r | |
219 | BufferPtr += Buffer->size;\r | |
220 | \r | |
221 | CmdSize = (UINT32)(BufferPtr - (UINT8 *)&Cmd);\r | |
222 | Cmd.Header.paramSize = SwapBytes32(CmdSize);\r | |
223 | \r | |
224 | //\r | |
225 | // Call the TPM\r | |
226 | //\r | |
227 | ResultBufSize = sizeof(Res);\r | |
228 | Status = Tpm2SubmitCommand (CmdSize, (UINT8 *)&Cmd,&ResultBufSize, (UINT8 *)&Res);\r | |
229 | if (EFI_ERROR(Status)) {\r | |
230 | return Status;\r | |
231 | }\r | |
232 | \r | |
233 | if (ResultBufSize > sizeof(Res)) {\r | |
e905fbb0 | 234 | DEBUG ((DEBUG_ERROR, "SequenceUpdate: Failed ExecuteCommand: Buffer Too Small\r\n"));\r |
c1d93242 JY |
235 | return EFI_BUFFER_TOO_SMALL;\r |
236 | }\r | |
237 | \r | |
238 | //\r | |
239 | // Validate response headers\r | |
240 | //\r | |
241 | RespSize = SwapBytes32(Res.Header.paramSize);\r | |
242 | if (RespSize > sizeof(Res)) {\r | |
e905fbb0 | 243 | DEBUG ((DEBUG_ERROR, "SequenceUpdate: Response size too large! %d\r\n", RespSize));\r |
c1d93242 JY |
244 | return EFI_BUFFER_TOO_SMALL;\r |
245 | }\r | |
246 | \r | |
247 | //\r | |
248 | // Fail if command failed\r | |
249 | //\r | |
250 | if (SwapBytes32(Res.Header.responseCode) != TPM_RC_SUCCESS) {\r | |
e905fbb0 | 251 | DEBUG ((DEBUG_ERROR, "SequenceUpdate: Response Code error! 0x%08x\r\n", SwapBytes32(Res.Header.responseCode)));\r |
c1d93242 JY |
252 | return EFI_DEVICE_ERROR;\r |
253 | }\r | |
254 | \r | |
255 | //\r | |
256 | // Unmarshal the response\r | |
257 | //\r | |
258 | \r | |
259 | // None\r | |
260 | \r | |
261 | return EFI_SUCCESS;\r | |
262 | }\r | |
263 | \r | |
264 | /**\r | |
265 | This command adds the last part of data, if any, to an Event sequence and returns the result in a digest list.\r | |
266 | If pcrHandle references a PCR and not TPM_RH_NULL, then the returned digest list is processed in\r | |
267 | the same manner as the digest list input parameter to TPM2_PCR_Extend() with the pcrHandle in each\r | |
268 | bank extended with the associated digest value.\r | |
269 | \r | |
270 | @param[in] PcrHandle PCR to be extended with the Event data\r | |
271 | @param[in] SequenceHandle Authorization for the sequence\r | |
272 | @param[in] Buffer Data to be added to the Event\r | |
273 | @param[out] Results List of digests computed for the PCR\r | |
b3548d32 | 274 | \r |
c1d93242 JY |
275 | @retval EFI_SUCCESS Operation completed successfully.\r |
276 | @retval EFI_DEVICE_ERROR Unexpected device behavior.\r | |
277 | **/\r | |
278 | EFI_STATUS\r | |
279 | EFIAPI\r | |
280 | Tpm2EventSequenceComplete (\r | |
281 | IN TPMI_DH_PCR PcrHandle,\r | |
282 | IN TPMI_DH_OBJECT SequenceHandle,\r | |
283 | IN TPM2B_MAX_BUFFER *Buffer,\r | |
284 | OUT TPML_DIGEST_VALUES *Results\r | |
285 | )\r | |
286 | {\r | |
287 | EFI_STATUS Status;\r | |
288 | TPM2_EVENT_SEQUENCE_COMPLETE_COMMAND Cmd;\r | |
289 | TPM2_EVENT_SEQUENCE_COMPLETE_RESPONSE Res;\r | |
290 | UINT32 CmdSize;\r | |
291 | UINT32 RespSize;\r | |
292 | UINT8 *BufferPtr;\r | |
293 | UINT32 SessionInfoSize;\r | |
294 | UINT32 SessionInfoSize2;\r | |
295 | UINT32 Index;\r | |
296 | UINT32 ResultBufSize;\r | |
297 | UINT16 DigestSize;\r | |
298 | \r | |
299 | ZeroMem(&Cmd, sizeof(Cmd));\r | |
300 | \r | |
301 | //\r | |
302 | // Construct command\r | |
303 | //\r | |
304 | Cmd.Header.tag = SwapBytes16(TPM_ST_SESSIONS);\r | |
305 | Cmd.Header.commandCode = SwapBytes32(TPM_CC_EventSequenceComplete);\r | |
306 | Cmd.PcrHandle = SwapBytes32(PcrHandle);\r | |
307 | Cmd.SequenceHandle = SwapBytes32(SequenceHandle);\r | |
308 | \r | |
309 | //\r | |
310 | // Add in pcrHandle Auth session\r | |
311 | //\r | |
312 | BufferPtr = (UINT8 *)&Cmd.AuthSessionPcr;\r | |
313 | \r | |
314 | // sessionInfoSize\r | |
315 | SessionInfoSize = CopyAuthSessionCommand (NULL, BufferPtr);\r | |
316 | BufferPtr += SessionInfoSize;\r | |
317 | \r | |
318 | // sessionInfoSize\r | |
319 | SessionInfoSize2 = CopyAuthSessionCommand (NULL, BufferPtr);\r | |
320 | BufferPtr += SessionInfoSize2;\r | |
321 | Cmd.AuthorizationSize = SwapBytes32(SessionInfoSize + SessionInfoSize2);\r | |
322 | \r | |
323 | // buffer.size\r | |
324 | WriteUnaligned16 ((UINT16 *)BufferPtr, SwapBytes16(Buffer->size));\r | |
325 | BufferPtr += sizeof(UINT16);\r | |
326 | \r | |
327 | CopyMem(BufferPtr, &Buffer->buffer[0], Buffer->size);\r | |
328 | BufferPtr += Buffer->size;\r | |
329 | \r | |
330 | CmdSize = (UINT32)(BufferPtr - (UINT8 *)&Cmd);\r | |
331 | Cmd.Header.paramSize = SwapBytes32(CmdSize);\r | |
332 | \r | |
333 | //\r | |
334 | // Call the TPM\r | |
335 | //\r | |
336 | ResultBufSize = sizeof(Res);\r | |
337 | Status = Tpm2SubmitCommand (CmdSize, (UINT8 *)&Cmd, &ResultBufSize, (UINT8 *)&Res);\r | |
338 | if (EFI_ERROR(Status)) {\r | |
339 | return Status;\r | |
340 | }\r | |
341 | \r | |
342 | if (ResultBufSize > sizeof(Res)) {\r | |
e905fbb0 | 343 | DEBUG ((DEBUG_ERROR, "EventSequenceComplete: Failed ExecuteCommand: Buffer Too Small\r\n"));\r |
c1d93242 JY |
344 | return EFI_BUFFER_TOO_SMALL;\r |
345 | }\r | |
346 | \r | |
347 | //\r | |
348 | // Validate response headers\r | |
349 | //\r | |
350 | RespSize = SwapBytes32(Res.Header.paramSize);\r | |
351 | if (RespSize > sizeof(Res)) {\r | |
e905fbb0 | 352 | DEBUG ((DEBUG_ERROR, "EventSequenceComplete: Response size too large! %d\r\n", RespSize));\r |
c1d93242 JY |
353 | return EFI_BUFFER_TOO_SMALL;\r |
354 | }\r | |
355 | \r | |
356 | //\r | |
357 | // Fail if command failed\r | |
358 | //\r | |
359 | if (SwapBytes32(Res.Header.responseCode) != TPM_RC_SUCCESS) {\r | |
e905fbb0 | 360 | DEBUG ((DEBUG_ERROR, "EventSequenceComplete: Response Code error! 0x%08x\r\n", SwapBytes32(Res.Header.responseCode)));\r |
c1d93242 JY |
361 | return EFI_DEVICE_ERROR;\r |
362 | }\r | |
363 | \r | |
364 | //\r | |
365 | // Unmarshal the response\r | |
366 | //\r | |
367 | \r | |
368 | BufferPtr = (UINT8 *)&Res.Results;\r | |
369 | \r | |
370 | // count\r | |
371 | Results->count = SwapBytes32(ReadUnaligned32 ((UINT32 *)BufferPtr));\r | |
dd577319 ZC |
372 | if (Results->count > HASH_COUNT) {\r |
373 | DEBUG ((DEBUG_ERROR, "Tpm2EventSequenceComplete - Results->count error %x\n", Results->count));\r | |
374 | return EFI_DEVICE_ERROR;\r | |
375 | }\r | |
376 | \r | |
c1d93242 JY |
377 | BufferPtr += sizeof(UINT32);\r |
378 | \r | |
379 | for (Index = 0; Index < Results->count; Index++) {\r | |
380 | Results->digests[Index].hashAlg = SwapBytes16(ReadUnaligned16 ((UINT16 *)BufferPtr));\r | |
381 | BufferPtr += sizeof(UINT16);\r | |
382 | \r | |
383 | DigestSize = GetHashSizeFromAlgo (Results->digests[Index].hashAlg);\r | |
384 | if (DigestSize == 0) {\r | |
e905fbb0 | 385 | DEBUG ((DEBUG_ERROR, "EventSequenceComplete: Unknown hash algorithm %d\r\n", Results->digests[Index].hashAlg));\r |
c1d93242 JY |
386 | return EFI_DEVICE_ERROR;\r |
387 | }\r | |
388 | CopyMem(\r | |
389 | &Results->digests[Index].digest,\r | |
390 | BufferPtr,\r | |
391 | DigestSize\r | |
392 | );\r | |
393 | BufferPtr += DigestSize;\r | |
394 | }\r | |
395 | \r | |
396 | return EFI_SUCCESS;\r | |
397 | }\r | |
398 | \r | |
399 | /**\r | |
400 | This command adds the last part of data, if any, to a hash/HMAC sequence and returns the result.\r | |
401 | \r | |
402 | @param[in] SequenceHandle Authorization for the sequence\r | |
403 | @param[in] Buffer Data to be added to the hash/HMAC\r | |
404 | @param[out] Result The returned HMAC or digest in a sized buffer\r | |
b3548d32 | 405 | \r |
c1d93242 JY |
406 | @retval EFI_SUCCESS Operation completed successfully.\r |
407 | @retval EFI_DEVICE_ERROR Unexpected device behavior.\r | |
408 | **/\r | |
409 | EFI_STATUS\r | |
410 | EFIAPI\r | |
411 | Tpm2SequenceComplete (\r | |
412 | IN TPMI_DH_OBJECT SequenceHandle,\r | |
413 | IN TPM2B_MAX_BUFFER *Buffer,\r | |
414 | OUT TPM2B_DIGEST *Result\r | |
415 | )\r | |
416 | {\r | |
417 | EFI_STATUS Status;\r | |
418 | TPM2_SEQUENCE_COMPLETE_COMMAND Cmd;\r | |
419 | TPM2_SEQUENCE_COMPLETE_RESPONSE Res;\r | |
420 | UINT32 CmdSize;\r | |
421 | UINT32 RespSize;\r | |
422 | UINT8 *BufferPtr;\r | |
423 | UINT32 SessionInfoSize;\r | |
424 | UINT32 ResultBufSize;\r | |
425 | \r | |
426 | ZeroMem(&Cmd, sizeof(Cmd));\r | |
427 | \r | |
428 | //\r | |
429 | // Construct command\r | |
430 | //\r | |
431 | Cmd.Header.tag = SwapBytes16(TPM_ST_SESSIONS);\r | |
432 | Cmd.Header.commandCode = SwapBytes32(TPM_CC_SequenceComplete);\r | |
433 | Cmd.SequenceHandle = SwapBytes32(SequenceHandle);\r | |
434 | \r | |
435 | //\r | |
436 | // Add in Auth session\r | |
437 | //\r | |
438 | BufferPtr = (UINT8 *)&Cmd.AuthSessionSeq;\r | |
439 | \r | |
440 | // sessionInfoSize\r | |
441 | SessionInfoSize = CopyAuthSessionCommand (NULL, BufferPtr);\r | |
442 | BufferPtr += SessionInfoSize;\r | |
443 | Cmd.AuthorizationSize = SwapBytes32(SessionInfoSize);\r | |
444 | \r | |
445 | // buffer.size\r | |
446 | WriteUnaligned16 ((UINT16 *)BufferPtr, SwapBytes16(Buffer->size));\r | |
447 | BufferPtr += sizeof(UINT16);\r | |
448 | \r | |
449 | CopyMem(BufferPtr, &Buffer->buffer[0], Buffer->size);\r | |
450 | BufferPtr += Buffer->size;\r | |
451 | \r | |
452 | // Hierarchy\r | |
453 | WriteUnaligned32 ((UINT32 *)BufferPtr, SwapBytes32 (TPM_RH_NULL));\r | |
454 | BufferPtr += sizeof (UINT32);\r | |
455 | \r | |
456 | CmdSize = (UINT32)(BufferPtr - (UINT8 *)&Cmd);\r | |
457 | Cmd.Header.paramSize = SwapBytes32(CmdSize);\r | |
458 | \r | |
459 | //\r | |
460 | // Call the TPM\r | |
461 | //\r | |
462 | ResultBufSize = sizeof(Res);\r | |
463 | Status = Tpm2SubmitCommand (CmdSize, (UINT8 *)&Cmd, &ResultBufSize, (UINT8 *)&Res);\r | |
464 | if (EFI_ERROR(Status)) {\r | |
465 | return Status;\r | |
466 | }\r | |
467 | \r | |
468 | if (ResultBufSize > sizeof(Res)) {\r | |
e905fbb0 | 469 | DEBUG ((DEBUG_ERROR, "SequenceComplete: Failed ExecuteCommand: Buffer Too Small\r\n"));\r |
c1d93242 JY |
470 | return EFI_BUFFER_TOO_SMALL;\r |
471 | }\r | |
472 | \r | |
473 | //\r | |
474 | // Validate response headers\r | |
475 | //\r | |
476 | RespSize = SwapBytes32(Res.Header.paramSize);\r | |
477 | if (RespSize > sizeof(Res)) {\r | |
e905fbb0 | 478 | DEBUG ((DEBUG_ERROR, "SequenceComplete: Response size too large! %d\r\n", RespSize));\r |
c1d93242 JY |
479 | return EFI_BUFFER_TOO_SMALL;\r |
480 | }\r | |
481 | \r | |
482 | //\r | |
483 | // Fail if command failed\r | |
484 | //\r | |
485 | if (SwapBytes32(Res.Header.responseCode) != TPM_RC_SUCCESS) {\r | |
e905fbb0 | 486 | DEBUG ((DEBUG_ERROR, "SequenceComplete: Response Code error! 0x%08x\r\n", SwapBytes32(Res.Header.responseCode)));\r |
c1d93242 JY |
487 | return EFI_DEVICE_ERROR;\r |
488 | }\r | |
489 | \r | |
490 | //\r | |
491 | // Unmarshal the response\r | |
492 | //\r | |
493 | \r | |
494 | BufferPtr = (UINT8 *)&Res.Digest;\r | |
495 | \r | |
496 | // digestSize\r | |
497 | Result->size = SwapBytes16(ReadUnaligned16 ((UINT16 *)BufferPtr));\r | |
dd577319 ZC |
498 | if (Result->size > sizeof(TPMU_HA)){\r |
499 | DEBUG ((DEBUG_ERROR, "Tpm2SequenceComplete - Result->size error %x\n", Result->size));\r | |
500 | return EFI_DEVICE_ERROR;\r | |
501 | }\r | |
502 | \r | |
c1d93242 JY |
503 | BufferPtr += sizeof(UINT16);\r |
504 | \r | |
505 | CopyMem(\r | |
506 | Result->buffer,\r | |
507 | BufferPtr,\r | |
508 | Result->size\r | |
509 | );\r | |
510 | \r | |
511 | return EFI_SUCCESS;\r | |
512 | }\r |