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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 |
c1d93242 JY |
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 <IndustryStandard/UefiTcgPlatform.h>\r | |
16 | #include <Library/Tpm2CommandLib.h>\r | |
17 | #include <Library/Tpm2DeviceLib.h>\r | |
18 | #include <Library/BaseMemoryLib.h>\r | |
19 | #include <Library/BaseLib.h>\r | |
20 | #include <Library/DebugLib.h>\r | |
21 | \r | |
22 | #pragma pack(1)\r | |
23 | \r | |
24 | typedef struct {\r | |
25 | TPM2_COMMAND_HEADER Header;\r | |
26 | TPM2B_AUTH Auth;\r | |
27 | TPMI_ALG_HASH HashAlg;\r | |
28 | } TPM2_HASH_SEQUENCE_START_COMMAND;\r | |
29 | \r | |
30 | typedef struct {\r | |
31 | TPM2_RESPONSE_HEADER Header;\r | |
32 | TPMI_DH_OBJECT SequenceHandle;\r | |
33 | } TPM2_HASH_SEQUENCE_START_RESPONSE;\r | |
34 | \r | |
35 | typedef struct {\r | |
36 | TPM2_COMMAND_HEADER Header;\r | |
37 | TPMI_DH_OBJECT SequenceHandle;\r | |
38 | UINT32 AuthorizationSize;\r | |
39 | TPMS_AUTH_COMMAND AuthSessionSeq;\r | |
40 | TPM2B_MAX_BUFFER Buffer;\r | |
41 | } TPM2_SEQUENCE_UPDATE_COMMAND;\r | |
42 | \r | |
43 | typedef struct {\r | |
44 | TPM2_RESPONSE_HEADER Header;\r | |
45 | UINT32 ParameterSize;\r | |
46 | TPMS_AUTH_RESPONSE AuthSessionSeq;\r | |
47 | } TPM2_SEQUENCE_UPDATE_RESPONSE;\r | |
48 | \r | |
49 | typedef struct {\r | |
50 | TPM2_COMMAND_HEADER Header;\r | |
51 | TPMI_DH_PCR PcrHandle;\r | |
52 | TPMI_DH_OBJECT SequenceHandle;\r | |
53 | UINT32 AuthorizationSize;\r | |
54 | TPMS_AUTH_COMMAND AuthSessionPcr;\r | |
55 | TPMS_AUTH_COMMAND AuthSessionSeq;\r | |
56 | TPM2B_MAX_BUFFER Buffer;\r | |
57 | } TPM2_EVENT_SEQUENCE_COMPLETE_COMMAND;\r | |
58 | \r | |
59 | typedef struct {\r | |
60 | TPM2_RESPONSE_HEADER Header;\r | |
61 | UINT32 ParameterSize;\r | |
62 | TPML_DIGEST_VALUES Results;\r | |
63 | TPMS_AUTH_RESPONSE AuthSessionPcr;\r | |
64 | TPMS_AUTH_RESPONSE AuthSessionSeq;\r | |
65 | } TPM2_EVENT_SEQUENCE_COMPLETE_RESPONSE;\r | |
66 | \r | |
67 | typedef struct {\r | |
68 | TPM2_COMMAND_HEADER Header;\r | |
69 | TPMI_DH_OBJECT SequenceHandle;\r | |
70 | UINT32 AuthorizationSize;\r | |
71 | TPMS_AUTH_COMMAND AuthSessionSeq;\r | |
72 | TPM2B_MAX_BUFFER Buffer;\r | |
73 | TPMI_RH_HIERARCHY Hierarchy;\r | |
74 | } TPM2_SEQUENCE_COMPLETE_COMMAND;\r | |
75 | \r | |
76 | typedef struct {\r | |
77 | TPM2_RESPONSE_HEADER Header;\r | |
78 | UINT32 ParameterSize;\r | |
79 | TPM2B_DIGEST Digest;\r | |
80 | TPMS_AUTH_RESPONSE AuthSessionSeq;\r | |
81 | } TPM2_SEQUENCE_COMPLETE_RESPONSE;\r | |
82 | \r | |
83 | #pragma pack()\r | |
84 | \r | |
85 | /**\r | |
86 | This command starts a hash or an Event sequence.\r | |
87 | If hashAlg is an implemented hash, then a hash sequence is started.\r | |
88 | If hashAlg is TPM_ALG_NULL, then an Event sequence is started.\r | |
89 | \r | |
90 | @param[in] HashAlg The hash algorithm to use for the hash sequence\r | |
91 | An Event sequence starts if this is TPM_ALG_NULL.\r | |
92 | @param[out] SequenceHandle A handle to reference the sequence\r | |
93 | \r | |
94 | @retval EFI_SUCCESS Operation completed successfully.\r | |
95 | @retval EFI_DEVICE_ERROR Unexpected device behavior.\r | |
96 | **/\r | |
97 | EFI_STATUS\r | |
98 | EFIAPI\r | |
99 | Tpm2HashSequenceStart (\r | |
100 | IN TPMI_ALG_HASH HashAlg,\r | |
101 | OUT TPMI_DH_OBJECT *SequenceHandle\r | |
102 | )\r | |
103 | {\r | |
104 | EFI_STATUS Status;\r | |
105 | TPM2_HASH_SEQUENCE_START_COMMAND Cmd;\r | |
106 | TPM2_HASH_SEQUENCE_START_RESPONSE Res;\r | |
107 | UINT32 CmdSize;\r | |
108 | UINT32 RespSize;\r | |
109 | UINT8 *Buffer;\r | |
110 | UINT32 ResultBufSize;\r | |
111 | \r | |
112 | ZeroMem(&Cmd, sizeof(Cmd));\r | |
113 | \r | |
114 | //\r | |
115 | // Construct command\r | |
116 | //\r | |
117 | Cmd.Header.tag = SwapBytes16(TPM_ST_NO_SESSIONS);\r | |
118 | Cmd.Header.commandCode = SwapBytes32(TPM_CC_HashSequenceStart);\r | |
119 | \r | |
120 | Buffer = (UINT8 *)&Cmd.Auth;\r | |
121 | \r | |
122 | // auth = nullAuth\r | |
123 | WriteUnaligned16 ((UINT16 *)Buffer, SwapBytes16(0));\r | |
124 | Buffer += sizeof(UINT16);\r | |
125 | \r | |
126 | // hashAlg\r | |
127 | WriteUnaligned16 ((UINT16 *)Buffer, SwapBytes16(HashAlg));\r | |
128 | Buffer += sizeof(UINT16);\r | |
129 | \r | |
130 | CmdSize = (UINT32)(Buffer - (UINT8 *)&Cmd);\r | |
131 | Cmd.Header.paramSize = SwapBytes32(CmdSize);\r | |
132 | \r | |
133 | //\r | |
134 | // Call the TPM\r | |
135 | //\r | |
136 | ResultBufSize = sizeof(Res);\r | |
137 | Status = Tpm2SubmitCommand (CmdSize, (UINT8 *)&Cmd, &ResultBufSize, (UINT8 *)&Res);\r | |
138 | if (EFI_ERROR(Status)) {\r | |
139 | return Status;\r | |
140 | }\r | |
141 | \r | |
142 | if (ResultBufSize > sizeof(Res)) {\r | |
143 | DEBUG ((EFI_D_ERROR, "HashSequenceStart: Failed ExecuteCommand: Buffer Too Small\r\n"));\r | |
144 | return EFI_BUFFER_TOO_SMALL;\r | |
145 | }\r | |
146 | \r | |
147 | //\r | |
148 | // Validate response headers\r | |
149 | //\r | |
150 | RespSize = SwapBytes32(Res.Header.paramSize);\r | |
151 | if (RespSize > sizeof(Res)) {\r | |
152 | DEBUG ((EFI_D_ERROR, "HashSequenceStart: Response size too large! %d\r\n", RespSize));\r | |
153 | return EFI_BUFFER_TOO_SMALL;\r | |
154 | }\r | |
155 | \r | |
156 | //\r | |
157 | // Fail if command failed\r | |
158 | //\r | |
159 | if (SwapBytes32(Res.Header.responseCode) != TPM_RC_SUCCESS) {\r | |
160 | DEBUG ((EFI_D_ERROR, "HashSequenceStart: Response Code error! 0x%08x\r\n", SwapBytes32(Res.Header.responseCode)));\r | |
161 | return EFI_DEVICE_ERROR;\r | |
162 | }\r | |
163 | \r | |
164 | //\r | |
165 | // Unmarshal the response\r | |
166 | //\r | |
167 | \r | |
168 | // sequenceHandle\r | |
169 | *SequenceHandle = SwapBytes32(Res.SequenceHandle);\r | |
170 | \r | |
171 | return EFI_SUCCESS;\r | |
172 | }\r | |
173 | \r | |
174 | /**\r | |
175 | This command is used to add data to a hash or HMAC sequence.\r | |
176 | The amount of data in buffer may be any size up to the limits of the TPM.\r | |
177 | NOTE: In all TPM, a buffer size of 1,024 octets is allowed.\r | |
178 | \r | |
179 | @param[in] SequenceHandle Handle for the sequence object\r | |
180 | @param[in] Buffer Data to be added to hash\r | |
181 | \r | |
182 | @retval EFI_SUCCESS Operation completed successfully.\r | |
183 | @retval EFI_DEVICE_ERROR Unexpected device behavior.\r | |
184 | **/\r | |
185 | EFI_STATUS\r | |
186 | EFIAPI\r | |
187 | Tpm2SequenceUpdate (\r | |
188 | IN TPMI_DH_OBJECT SequenceHandle,\r | |
189 | IN TPM2B_MAX_BUFFER *Buffer\r | |
190 | )\r | |
191 | {\r | |
192 | EFI_STATUS Status;\r | |
193 | TPM2_SEQUENCE_UPDATE_COMMAND Cmd;\r | |
194 | TPM2_SEQUENCE_UPDATE_RESPONSE Res;\r | |
195 | UINT32 CmdSize;\r | |
196 | UINT32 RespSize;\r | |
197 | UINT8 *BufferPtr;\r | |
198 | UINT32 SessionInfoSize;\r | |
199 | UINT32 ResultBufSize;\r | |
200 | \r | |
201 | ZeroMem(&Cmd, sizeof(Cmd));\r | |
202 | \r | |
203 | //\r | |
204 | // Construct command\r | |
205 | //\r | |
206 | Cmd.Header.tag = SwapBytes16(TPM_ST_SESSIONS);\r | |
207 | Cmd.Header.commandCode = SwapBytes32(TPM_CC_SequenceUpdate);\r | |
208 | Cmd.SequenceHandle = SwapBytes32(SequenceHandle);\r | |
209 | \r | |
210 | //\r | |
211 | // Add in Auth session\r | |
212 | //\r | |
213 | BufferPtr = (UINT8 *)&Cmd.AuthSessionSeq;\r | |
214 | \r | |
215 | // sessionInfoSize\r | |
216 | SessionInfoSize = CopyAuthSessionCommand (NULL, BufferPtr);\r | |
217 | BufferPtr += SessionInfoSize;\r | |
218 | Cmd.AuthorizationSize = SwapBytes32(SessionInfoSize);\r | |
219 | \r | |
220 | // buffer.size\r | |
221 | WriteUnaligned16 ((UINT16 *)BufferPtr, SwapBytes16(Buffer->size));\r | |
222 | BufferPtr += sizeof(UINT16);\r | |
223 | \r | |
224 | CopyMem(BufferPtr, &Buffer->buffer, Buffer->size);\r | |
225 | BufferPtr += Buffer->size;\r | |
226 | \r | |
227 | CmdSize = (UINT32)(BufferPtr - (UINT8 *)&Cmd);\r | |
228 | Cmd.Header.paramSize = SwapBytes32(CmdSize);\r | |
229 | \r | |
230 | //\r | |
231 | // Call the TPM\r | |
232 | //\r | |
233 | ResultBufSize = sizeof(Res);\r | |
234 | Status = Tpm2SubmitCommand (CmdSize, (UINT8 *)&Cmd,&ResultBufSize, (UINT8 *)&Res);\r | |
235 | if (EFI_ERROR(Status)) {\r | |
236 | return Status;\r | |
237 | }\r | |
238 | \r | |
239 | if (ResultBufSize > sizeof(Res)) {\r | |
240 | DEBUG ((EFI_D_ERROR, "SequenceUpdate: Failed ExecuteCommand: Buffer Too Small\r\n"));\r | |
241 | return EFI_BUFFER_TOO_SMALL;\r | |
242 | }\r | |
243 | \r | |
244 | //\r | |
245 | // Validate response headers\r | |
246 | //\r | |
247 | RespSize = SwapBytes32(Res.Header.paramSize);\r | |
248 | if (RespSize > sizeof(Res)) {\r | |
249 | DEBUG ((EFI_D_ERROR, "SequenceUpdate: Response size too large! %d\r\n", RespSize));\r | |
250 | return EFI_BUFFER_TOO_SMALL;\r | |
251 | }\r | |
252 | \r | |
253 | //\r | |
254 | // Fail if command failed\r | |
255 | //\r | |
256 | if (SwapBytes32(Res.Header.responseCode) != TPM_RC_SUCCESS) {\r | |
257 | DEBUG ((EFI_D_ERROR, "SequenceUpdate: Response Code error! 0x%08x\r\n", SwapBytes32(Res.Header.responseCode)));\r | |
258 | return EFI_DEVICE_ERROR;\r | |
259 | }\r | |
260 | \r | |
261 | //\r | |
262 | // Unmarshal the response\r | |
263 | //\r | |
264 | \r | |
265 | // None\r | |
266 | \r | |
267 | return EFI_SUCCESS;\r | |
268 | }\r | |
269 | \r | |
270 | /**\r | |
271 | This command adds the last part of data, if any, to an Event sequence and returns the result in a digest list.\r | |
272 | If pcrHandle references a PCR and not TPM_RH_NULL, then the returned digest list is processed in\r | |
273 | the same manner as the digest list input parameter to TPM2_PCR_Extend() with the pcrHandle in each\r | |
274 | bank extended with the associated digest value.\r | |
275 | \r | |
276 | @param[in] PcrHandle PCR to be extended with the Event data\r | |
277 | @param[in] SequenceHandle Authorization for the sequence\r | |
278 | @param[in] Buffer Data to be added to the Event\r | |
279 | @param[out] Results List of digests computed for the PCR\r | |
280 | \r | |
281 | @retval EFI_SUCCESS Operation completed successfully.\r | |
282 | @retval EFI_DEVICE_ERROR Unexpected device behavior.\r | |
283 | **/\r | |
284 | EFI_STATUS\r | |
285 | EFIAPI\r | |
286 | Tpm2EventSequenceComplete (\r | |
287 | IN TPMI_DH_PCR PcrHandle,\r | |
288 | IN TPMI_DH_OBJECT SequenceHandle,\r | |
289 | IN TPM2B_MAX_BUFFER *Buffer,\r | |
290 | OUT TPML_DIGEST_VALUES *Results\r | |
291 | )\r | |
292 | {\r | |
293 | EFI_STATUS Status;\r | |
294 | TPM2_EVENT_SEQUENCE_COMPLETE_COMMAND Cmd;\r | |
295 | TPM2_EVENT_SEQUENCE_COMPLETE_RESPONSE Res;\r | |
296 | UINT32 CmdSize;\r | |
297 | UINT32 RespSize;\r | |
298 | UINT8 *BufferPtr;\r | |
299 | UINT32 SessionInfoSize;\r | |
300 | UINT32 SessionInfoSize2;\r | |
301 | UINT32 Index;\r | |
302 | UINT32 ResultBufSize;\r | |
303 | UINT16 DigestSize;\r | |
304 | \r | |
305 | ZeroMem(&Cmd, sizeof(Cmd));\r | |
306 | \r | |
307 | //\r | |
308 | // Construct command\r | |
309 | //\r | |
310 | Cmd.Header.tag = SwapBytes16(TPM_ST_SESSIONS);\r | |
311 | Cmd.Header.commandCode = SwapBytes32(TPM_CC_EventSequenceComplete);\r | |
312 | Cmd.PcrHandle = SwapBytes32(PcrHandle);\r | |
313 | Cmd.SequenceHandle = SwapBytes32(SequenceHandle);\r | |
314 | \r | |
315 | //\r | |
316 | // Add in pcrHandle Auth session\r | |
317 | //\r | |
318 | BufferPtr = (UINT8 *)&Cmd.AuthSessionPcr;\r | |
319 | \r | |
320 | // sessionInfoSize\r | |
321 | SessionInfoSize = CopyAuthSessionCommand (NULL, BufferPtr);\r | |
322 | BufferPtr += SessionInfoSize;\r | |
323 | \r | |
324 | // sessionInfoSize\r | |
325 | SessionInfoSize2 = CopyAuthSessionCommand (NULL, BufferPtr);\r | |
326 | BufferPtr += SessionInfoSize2;\r | |
327 | Cmd.AuthorizationSize = SwapBytes32(SessionInfoSize + SessionInfoSize2);\r | |
328 | \r | |
329 | // buffer.size\r | |
330 | WriteUnaligned16 ((UINT16 *)BufferPtr, SwapBytes16(Buffer->size));\r | |
331 | BufferPtr += sizeof(UINT16);\r | |
332 | \r | |
333 | CopyMem(BufferPtr, &Buffer->buffer[0], Buffer->size);\r | |
334 | BufferPtr += Buffer->size;\r | |
335 | \r | |
336 | CmdSize = (UINT32)(BufferPtr - (UINT8 *)&Cmd);\r | |
337 | Cmd.Header.paramSize = SwapBytes32(CmdSize);\r | |
338 | \r | |
339 | //\r | |
340 | // Call the TPM\r | |
341 | //\r | |
342 | ResultBufSize = sizeof(Res);\r | |
343 | Status = Tpm2SubmitCommand (CmdSize, (UINT8 *)&Cmd, &ResultBufSize, (UINT8 *)&Res);\r | |
344 | if (EFI_ERROR(Status)) {\r | |
345 | return Status;\r | |
346 | }\r | |
347 | \r | |
348 | if (ResultBufSize > sizeof(Res)) {\r | |
349 | DEBUG ((EFI_D_ERROR, "EventSequenceComplete: Failed ExecuteCommand: Buffer Too Small\r\n"));\r | |
350 | return EFI_BUFFER_TOO_SMALL;\r | |
351 | }\r | |
352 | \r | |
353 | //\r | |
354 | // Validate response headers\r | |
355 | //\r | |
356 | RespSize = SwapBytes32(Res.Header.paramSize);\r | |
357 | if (RespSize > sizeof(Res)) {\r | |
358 | DEBUG ((EFI_D_ERROR, "EventSequenceComplete: Response size too large! %d\r\n", RespSize));\r | |
359 | return EFI_BUFFER_TOO_SMALL;\r | |
360 | }\r | |
361 | \r | |
362 | //\r | |
363 | // Fail if command failed\r | |
364 | //\r | |
365 | if (SwapBytes32(Res.Header.responseCode) != TPM_RC_SUCCESS) {\r | |
366 | DEBUG ((EFI_D_ERROR, "EventSequenceComplete: Response Code error! 0x%08x\r\n", SwapBytes32(Res.Header.responseCode)));\r | |
367 | return EFI_DEVICE_ERROR;\r | |
368 | }\r | |
369 | \r | |
370 | //\r | |
371 | // Unmarshal the response\r | |
372 | //\r | |
373 | \r | |
374 | BufferPtr = (UINT8 *)&Res.Results;\r | |
375 | \r | |
376 | // count\r | |
377 | Results->count = SwapBytes32(ReadUnaligned32 ((UINT32 *)BufferPtr));\r | |
dd577319 ZC |
378 | if (Results->count > HASH_COUNT) {\r |
379 | DEBUG ((DEBUG_ERROR, "Tpm2EventSequenceComplete - Results->count error %x\n", Results->count));\r | |
380 | return EFI_DEVICE_ERROR;\r | |
381 | }\r | |
382 | \r | |
c1d93242 JY |
383 | BufferPtr += sizeof(UINT32);\r |
384 | \r | |
385 | for (Index = 0; Index < Results->count; Index++) {\r | |
386 | Results->digests[Index].hashAlg = SwapBytes16(ReadUnaligned16 ((UINT16 *)BufferPtr));\r | |
387 | BufferPtr += sizeof(UINT16);\r | |
388 | \r | |
389 | DigestSize = GetHashSizeFromAlgo (Results->digests[Index].hashAlg);\r | |
390 | if (DigestSize == 0) {\r | |
391 | DEBUG ((EFI_D_ERROR, "EventSequenceComplete: Unknown hash algorithm %d\r\n", Results->digests[Index].hashAlg));\r | |
392 | return EFI_DEVICE_ERROR;\r | |
393 | }\r | |
394 | CopyMem(\r | |
395 | &Results->digests[Index].digest,\r | |
396 | BufferPtr,\r | |
397 | DigestSize\r | |
398 | );\r | |
399 | BufferPtr += DigestSize;\r | |
400 | }\r | |
401 | \r | |
402 | return EFI_SUCCESS;\r | |
403 | }\r | |
404 | \r | |
405 | /**\r | |
406 | This command adds the last part of data, if any, to a hash/HMAC sequence and returns the result.\r | |
407 | \r | |
408 | @param[in] SequenceHandle Authorization for the sequence\r | |
409 | @param[in] Buffer Data to be added to the hash/HMAC\r | |
410 | @param[out] Result The returned HMAC or digest in a sized buffer\r | |
411 | \r | |
412 | @retval EFI_SUCCESS Operation completed successfully.\r | |
413 | @retval EFI_DEVICE_ERROR Unexpected device behavior.\r | |
414 | **/\r | |
415 | EFI_STATUS\r | |
416 | EFIAPI\r | |
417 | Tpm2SequenceComplete (\r | |
418 | IN TPMI_DH_OBJECT SequenceHandle,\r | |
419 | IN TPM2B_MAX_BUFFER *Buffer,\r | |
420 | OUT TPM2B_DIGEST *Result\r | |
421 | )\r | |
422 | {\r | |
423 | EFI_STATUS Status;\r | |
424 | TPM2_SEQUENCE_COMPLETE_COMMAND Cmd;\r | |
425 | TPM2_SEQUENCE_COMPLETE_RESPONSE Res;\r | |
426 | UINT32 CmdSize;\r | |
427 | UINT32 RespSize;\r | |
428 | UINT8 *BufferPtr;\r | |
429 | UINT32 SessionInfoSize;\r | |
430 | UINT32 ResultBufSize;\r | |
431 | \r | |
432 | ZeroMem(&Cmd, sizeof(Cmd));\r | |
433 | \r | |
434 | //\r | |
435 | // Construct command\r | |
436 | //\r | |
437 | Cmd.Header.tag = SwapBytes16(TPM_ST_SESSIONS);\r | |
438 | Cmd.Header.commandCode = SwapBytes32(TPM_CC_SequenceComplete);\r | |
439 | Cmd.SequenceHandle = SwapBytes32(SequenceHandle);\r | |
440 | \r | |
441 | //\r | |
442 | // Add in Auth session\r | |
443 | //\r | |
444 | BufferPtr = (UINT8 *)&Cmd.AuthSessionSeq;\r | |
445 | \r | |
446 | // sessionInfoSize\r | |
447 | SessionInfoSize = CopyAuthSessionCommand (NULL, BufferPtr);\r | |
448 | BufferPtr += SessionInfoSize;\r | |
449 | Cmd.AuthorizationSize = SwapBytes32(SessionInfoSize);\r | |
450 | \r | |
451 | // buffer.size\r | |
452 | WriteUnaligned16 ((UINT16 *)BufferPtr, SwapBytes16(Buffer->size));\r | |
453 | BufferPtr += sizeof(UINT16);\r | |
454 | \r | |
455 | CopyMem(BufferPtr, &Buffer->buffer[0], Buffer->size);\r | |
456 | BufferPtr += Buffer->size;\r | |
457 | \r | |
458 | // Hierarchy\r | |
459 | WriteUnaligned32 ((UINT32 *)BufferPtr, SwapBytes32 (TPM_RH_NULL));\r | |
460 | BufferPtr += sizeof (UINT32);\r | |
461 | \r | |
462 | CmdSize = (UINT32)(BufferPtr - (UINT8 *)&Cmd);\r | |
463 | Cmd.Header.paramSize = SwapBytes32(CmdSize);\r | |
464 | \r | |
465 | //\r | |
466 | // Call the TPM\r | |
467 | //\r | |
468 | ResultBufSize = sizeof(Res);\r | |
469 | Status = Tpm2SubmitCommand (CmdSize, (UINT8 *)&Cmd, &ResultBufSize, (UINT8 *)&Res);\r | |
470 | if (EFI_ERROR(Status)) {\r | |
471 | return Status;\r | |
472 | }\r | |
473 | \r | |
474 | if (ResultBufSize > sizeof(Res)) {\r | |
475 | DEBUG ((EFI_D_ERROR, "SequenceComplete: Failed ExecuteCommand: Buffer Too Small\r\n"));\r | |
476 | return EFI_BUFFER_TOO_SMALL;\r | |
477 | }\r | |
478 | \r | |
479 | //\r | |
480 | // Validate response headers\r | |
481 | //\r | |
482 | RespSize = SwapBytes32(Res.Header.paramSize);\r | |
483 | if (RespSize > sizeof(Res)) {\r | |
484 | DEBUG ((EFI_D_ERROR, "SequenceComplete: Response size too large! %d\r\n", RespSize));\r | |
485 | return EFI_BUFFER_TOO_SMALL;\r | |
486 | }\r | |
487 | \r | |
488 | //\r | |
489 | // Fail if command failed\r | |
490 | //\r | |
491 | if (SwapBytes32(Res.Header.responseCode) != TPM_RC_SUCCESS) {\r | |
492 | DEBUG ((EFI_D_ERROR, "SequenceComplete: Response Code error! 0x%08x\r\n", SwapBytes32(Res.Header.responseCode)));\r | |
493 | return EFI_DEVICE_ERROR;\r | |
494 | }\r | |
495 | \r | |
496 | //\r | |
497 | // Unmarshal the response\r | |
498 | //\r | |
499 | \r | |
500 | BufferPtr = (UINT8 *)&Res.Digest;\r | |
501 | \r | |
502 | // digestSize\r | |
503 | Result->size = SwapBytes16(ReadUnaligned16 ((UINT16 *)BufferPtr));\r | |
dd577319 ZC |
504 | if (Result->size > sizeof(TPMU_HA)){\r |
505 | DEBUG ((DEBUG_ERROR, "Tpm2SequenceComplete - Result->size error %x\n", Result->size));\r | |
506 | return EFI_DEVICE_ERROR;\r | |
507 | }\r | |
508 | \r | |
c1d93242 JY |
509 | BufferPtr += sizeof(UINT16);\r |
510 | \r | |
511 | CopyMem(\r | |
512 | Result->buffer,\r | |
513 | BufferPtr,\r | |
514 | Result->size\r | |
515 | );\r | |
516 | \r | |
517 | return EFI_SUCCESS;\r | |
518 | }\r |