2 files changed, 57 insertions, 0 deletions
diff --git a/ArmPkg/Include/IndustryStandard/ArmTransferList.h b/ArmPkg/Include/IndustryStandard/ArmTransferList.h
index 303384622f..2bc0d80177 100644
--- a/ArmPkg/Include/IndustryStandard/ArmTransferList.h
+++ b/ArmPkg/Include/IndustryStandard/ArmTransferList.h
@@ -74,6 +74,12 @@
 #define TRANSFER_LIST_FL_HAS_CHECKSUM  BIT0
 
 /*
+ * Flag values for TPM event log table entry layout XFERLIST_EVLOG->Flags,
+ * see https://github.com/FirmwareHandoff/firmware_handoff/blob/main/source/transfer_list.rst#tpm-event-log-table-entry-layout-xferlist_evlog
+ */
+#define TRANSFER_LIST_EVENTLOG_FL_NEED_TO_REPLAY  BIT0 /* Need to replay */
+
+/*
  * Operation codes indicating the validity of the Transfer List.
  */
 typedef enum {
@@ -137,4 +143,18 @@ typedef struct TransferEntryHeader {
   UINT32    DataSize;
 } TRANSFER_ENTRY_HEADER;
 
+/*
+ * TPM event log information entry,
+ * see Section 'TPM event log table entry layout (XFERLIST_EVLOG)' in
+ * the Firmware Handoff specification.
+ */
+typedef struct TransferListEventLog {
+  /// See the TRANSFER_LIST_EVENT_LOG_FL_*
+  UINT32    Flags;
+
+  /// TPM event log as much as
+  /// TRNASFER_ENTRY_HEADER->DataSize - sizeof (TRANSFER_LIST_EVENTLOG)->Flags
+  UINT8     EventLog[];
+} TRANSFER_LIST_EVENTLOG;
+
 #endif // ARM_TRANSFER_LIST_
diff --git a/ArmPkg/Include/Library/ArmTransferListLib.h b/ArmPkg/Include/Library/ArmTransferListLib.h
index fb0c69972e..09ade9f4a1 100644
--- a/ArmPkg/Include/Library/ArmTransferListLib.h
+++ b/ArmPkg/Include/Library/ArmTransferListLib.h
@@ -19,6 +19,21 @@
 #include <Pi/PiHob.h>
 
 /**
+  Get the TransferList from HOB list.
+
+  @param[out] TransferList  TransferList
+
+  @retval EFI_SUCCESS      TransferList is found.
+  @retval EFI_NOT_FOUND    TransferList is not found.
+
+**/
+EFI_STATUS
+EFIAPI
+TransferListGetFromHobList (
+  OUT TRANSFER_LIST_HEADER  **TransferList
+  );
+
+/**
   Return the first Transfer Entry Node in the Transfer List.
 
   @param [in]   TransferListHeader     Pointer to the Transfer List Header.
@@ -157,4 +172,26 @@ TransferListFindEntry (
   IN UINT16                TagId
   );
 
+/**
+  Get TPM event log from TransferList
+
+  @param [in]   TransferListHeader       Pointer to the Transfer List Header
+  @param [out]  EventLog                 Pointer to Eventlog in TransferList
+  @param [out]  EventLogSize             Size of Event log
+  @param [out]  EventLogFlags            Flags for Event log
+
+  @return EFI_SUCCESS
+  @return EFI_NOT_FOUND                  No Event log in TransferListHeader
+  @return EFI_INVALID_PARAMETER          Invalid parameters
+
+**/
+EFI_STATUS
+EFIAPI
+TransferListGetEventLog (
+  IN TRANSFER_LIST_HEADER  *TransferListHeader,
+  OUT VOID                 **EventLog,
+  OUT UINTN                *EventLogSize,
+  OUT UINT32               *EventLogFlags       OPTIONAL
+  );
+
 #endif // ARM_TRANSFER_LIST_LIB_