diff options
Diffstat (limited to 'SecurityPkg/Library/PeiTpmMeasurementLib/PeiTpmMeasurementLib.c')
-rw-r--r-- | SecurityPkg/Library/PeiTpmMeasurementLib/PeiTpmMeasurementLib.c | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/SecurityPkg/Library/PeiTpmMeasurementLib/PeiTpmMeasurementLib.c b/SecurityPkg/Library/PeiTpmMeasurementLib/PeiTpmMeasurementLib.c new file mode 100644 index 0000000..200e15a --- /dev/null +++ b/SecurityPkg/Library/PeiTpmMeasurementLib/PeiTpmMeasurementLib.c @@ -0,0 +1,74 @@ +/** @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;
+}
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