/** @file | |
This library is used by other modules to measure data to TPM. | |
Copyright (c) 2020, Intel Corporation. All rights reserved. <BR> | |
SPDX-License-Identifier: BSD-2-Clause-Patent | |
**/ | |
#include <PiPei.h> | |
#include <Library/BaseMemoryLib.h> | |
#include <Library/PeiServicesLib.h> | |
#include <Library/PeiServicesTablePointerLib.h> | |
#include <Library/DebugLib.h> | |
#include <Library/HobLib.h> | |
#include <Library/TpmMeasurementLib.h> | |
#include <Ppi/Tcg.h> | |
#include <IndustryStandard/UefiTcgPlatform.h> | |
/** | |
Tpm measure and log data, and extend the measurement result into a specific PCR. | |
@param[in] PcrIndex PCR Index. | |
@param[in] EventType Event type. | |
@param[in] EventLog Measurement event log. | |
@param[in] LogLen Event log length in bytes. | |
@param[in] HashData The start of the data buffer to be hashed, extended. | |
@param[in] HashDataLen The length, in bytes, of the buffer referenced by HashData | |
@retval EFI_SUCCESS Operation completed successfully. | |
@retval EFI_UNSUPPORTED TPM device not available. | |
@retval EFI_OUT_OF_RESOURCES Out of memory. | |
@retval EFI_DEVICE_ERROR The operation was unsuccessful. | |
**/ | |
EFI_STATUS | |
EFIAPI | |
TpmMeasureAndLogData ( | |
IN UINT32 PcrIndex, | |
IN UINT32 EventType, | |
IN VOID *EventLog, | |
IN UINT32 LogLen, | |
IN VOID *HashData, | |
IN UINT64 HashDataLen | |
) | |
{ | |
EFI_STATUS Status; | |
EDKII_TCG_PPI *TcgPpi; | |
TCG_PCR_EVENT_HDR TcgEventHdr; | |
Status = PeiServicesLocatePpi ( | |
&gEdkiiTcgPpiGuid, | |
0, | |
NULL, | |
(VOID **)&TcgPpi | |
); | |
if (EFI_ERROR (Status)) { | |
return Status; | |
} | |
TcgEventHdr.PCRIndex = PcrIndex; | |
TcgEventHdr.EventType = EventType; | |
TcgEventHdr.EventSize = LogLen; | |
Status = TcgPpi->HashLogExtendEvent ( | |
TcgPpi, | |
0, | |
HashData, | |
(UINTN)HashDataLen, | |
&TcgEventHdr, | |
EventLog | |
); | |
return Status; | |
} |