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1 | /** @file\r | |
2 | This library is used by other modules to measure data to TPM.\r | |
3 | \r | |
4 | Copyright (c) 2020, Intel Corporation. All rights reserved. <BR>\r | |
5 | SPDX-License-Identifier: BSD-2-Clause-Patent\r | |
6 | \r | |
7 | **/\r | |
8 | \r | |
9 | #include <PiPei.h>\r | |
10 | \r | |
11 | #include <Library/BaseMemoryLib.h>\r | |
12 | #include <Library/PeiServicesLib.h>\r | |
13 | #include <Library/PeiServicesTablePointerLib.h>\r | |
14 | #include <Library/DebugLib.h>\r | |
15 | #include <Library/HobLib.h>\r | |
16 | #include <Library/TpmMeasurementLib.h>\r | |
17 | \r | |
18 | #include <Ppi/Tcg.h>\r | |
19 | #include <IndustryStandard/UefiTcgPlatform.h>\r | |
20 | \r | |
21 | /**\r | |
22 | Tpm measure and log data, and extend the measurement result into a specific PCR.\r | |
23 | \r | |
24 | @param[in] PcrIndex PCR Index.\r | |
25 | @param[in] EventType Event type.\r | |
26 | @param[in] EventLog Measurement event log.\r | |
27 | @param[in] LogLen Event log length in bytes.\r | |
28 | @param[in] HashData The start of the data buffer to be hashed, extended.\r | |
29 | @param[in] HashDataLen The length, in bytes, of the buffer referenced by HashData\r | |
30 | \r | |
31 | @retval EFI_SUCCESS Operation completed successfully.\r | |
32 | @retval EFI_UNSUPPORTED TPM device not available.\r | |
33 | @retval EFI_OUT_OF_RESOURCES Out of memory.\r | |
34 | @retval EFI_DEVICE_ERROR The operation was unsuccessful.\r | |
35 | **/\r | |
36 | EFI_STATUS\r | |
37 | EFIAPI\r | |
38 | TpmMeasureAndLogData (\r | |
39 | IN UINT32 PcrIndex,\r | |
40 | IN UINT32 EventType,\r | |
41 | IN VOID *EventLog,\r | |
42 | IN UINT32 LogLen,\r | |
43 | IN VOID *HashData,\r | |
44 | IN UINT64 HashDataLen\r | |
45 | )\r | |
46 | {\r | |
47 | EFI_STATUS Status;\r | |
48 | EDKII_TCG_PPI *TcgPpi;\r | |
49 | TCG_PCR_EVENT_HDR TcgEventHdr;\r | |
50 | \r | |
51 | Status = PeiServicesLocatePpi (\r | |
52 | &gEdkiiTcgPpiGuid,\r | |
53 | 0,\r | |
54 | NULL,\r | |
55 | (VOID**)&TcgPpi\r | |
56 | );\r | |
57 | if (EFI_ERROR(Status)) {\r | |
58 | return Status;\r | |
59 | }\r | |
60 | \r | |
61 | TcgEventHdr.PCRIndex = PcrIndex;\r | |
62 | TcgEventHdr.EventType = EventType;\r | |
63 | TcgEventHdr.EventSize = LogLen;\r | |
64 | \r | |
65 | Status = TcgPpi->HashLogExtendEvent (\r | |
66 | TcgPpi,\r | |
67 | 0,\r | |
68 | HashData,\r | |
69 | (UINTN)HashDataLen,\r | |
70 | &TcgEventHdr,\r | |
71 | EventLog\r | |
72 | );\r | |
73 | return Status;\r | |
74 | }\r |