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1 | /** @file\r |
2 | Implement TPM1.2 PCR related commands.\r | |
3 | \r | |
4 | Copyright (c) 2016, 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 | #include <Library/Tpm12CommandLib.h>\r | |
17 | #include <Library/BaseLib.h>\r | |
18 | #include <Library/DebugLib.h>\r | |
19 | #include <Library/BaseMemoryLib.h>\r | |
20 | #include <Library/Tpm12DeviceLib.h>\r | |
21 | \r | |
22 | #pragma pack(1)\r | |
23 | \r | |
24 | typedef struct {\r | |
25 | TPM_RQU_COMMAND_HDR Hdr;\r | |
26 | TPM_PCRINDEX PcrIndex;\r | |
27 | TPM_DIGEST TpmDigest;\r | |
28 | } TPM_CMD_EXTEND;\r | |
29 | \r | |
30 | typedef struct {\r | |
31 | TPM_RSP_COMMAND_HDR Hdr;\r | |
32 | TPM_DIGEST TpmDigest;\r | |
33 | } TPM_RSP_EXTEND;\r | |
34 | \r | |
35 | #pragma pack()\r | |
36 | \r | |
37 | /**\r | |
38 | Extend a TPM PCR.\r | |
39 | \r | |
40 | @param[in] DigestToExtend The 160 bit value representing the event to be recorded.\r | |
41 | @param[in] PcrIndex The PCR to be updated.\r | |
42 | @param[out] NewPcrValue New PCR value after extend.\r | |
43 | \r | |
44 | @retval EFI_SUCCESS Operation completed successfully.\r | |
45 | @retval EFI_TIMEOUT The register can't run into the expected status in time.\r | |
46 | @retval EFI_BUFFER_TOO_SMALL Response data buffer is too small.\r | |
47 | @retval EFI_DEVICE_ERROR Unexpected device behavior.\r | |
48 | \r | |
49 | **/\r | |
50 | EFI_STATUS\r | |
51 | EFIAPI\r | |
52 | Tpm12Extend (\r | |
53 | IN TPM_DIGEST *DigestToExtend,\r | |
54 | IN TPM_PCRINDEX PcrIndex,\r | |
55 | OUT TPM_DIGEST *NewPcrValue\r | |
56 | )\r | |
57 | {\r | |
58 | EFI_STATUS Status;\r | |
59 | TPM_CMD_EXTEND Command;\r | |
60 | TPM_RSP_EXTEND Response;\r | |
61 | UINT32 Length;\r | |
62 | \r | |
63 | //\r | |
64 | // send Tpm command TPM_ORD_Extend\r | |
65 | //\r | |
66 | Command.Hdr.tag = SwapBytes16 (TPM_TAG_RQU_COMMAND);\r | |
67 | Command.Hdr.paramSize = SwapBytes32 (sizeof (Command));\r | |
68 | Command.Hdr.ordinal = SwapBytes32 (TPM_ORD_Extend);\r | |
69 | Command.PcrIndex = SwapBytes32 (PcrIndex);\r | |
70 | CopyMem (&Command.TpmDigest, DigestToExtend, sizeof (Command.TpmDigest));\r | |
71 | Length = sizeof (Response);\r | |
72 | Status = Tpm12SubmitCommand (sizeof (Command), (UINT8 *)&Command, &Length, (UINT8 *)&Response);\r | |
73 | if (EFI_ERROR (Status)) {\r | |
74 | return Status;\r | |
75 | }\r | |
76 | \r | |
950a3bc7 ZC |
77 | if (SwapBytes32(Response.Hdr.returnCode) != TPM_SUCCESS) {\r |
78 | DEBUG ((EFI_D_ERROR, "Tpm12Extend: Response Code error! 0x%08x\r\n", SwapBytes32(Response.Hdr.returnCode)));\r | |
79 | return EFI_DEVICE_ERROR;\r | |
80 | }\r | |
81 | \r | |
83b9662f MK |
82 | if (NewPcrValue != NULL) {\r |
83 | CopyMem (NewPcrValue, &Response.TpmDigest, sizeof (*NewPcrValue));\r | |
84 | }\r | |
85 | \r | |
86 | return Status;\r | |
87 | }\r |