1 /** @file 2 TCG PPI services. 3 4 Copyright (c) 2020, Intel Corporation. All rights reserved.<BR> 5 SPDX-License-Identifier: BSD-2-Clause-Patent 6 7 **/ 8 9 #ifndef _TCG_PPI_H_ 10 #define _TCG_PPI_H_ 11 12 #include <IndustryStandard/UefiTcgPlatform.h> 13 14 typedef struct _EDKII_TCG_PPI EDKII_TCG_PPI; 15 16 // 17 // This bit is shall be set when HashData is the pre-hash digest. 18 // 19 #define EDKII_TCG_PRE_HASH 0x0000000000000001 20 21 // 22 // This bit is shall be set when HashData is the pre-hash digest and log only. 23 // 24 #define EDKII_TCG_PRE_HASH_LOG_ONLY 0x0000000000000002 25 26 /** 27 Tpm measure and log data, and extend the measurement result into a specific PCR. 28 29 @param[in] This Indicates the calling context 30 @param[in] Flags Bitmap providing additional information 31 @param[in] HashData If BIT0 of Flags is 0, it is physical address of the 32 start of the data buffer to be hashed, extended, and logged. 33 If BIT0 of Flags is 1, it is physical address of the 34 start of the pre-hash data buffter to be extended, and logged. 35 The pre-hash data format is TPML_DIGEST_VALUES. 36 @param[in] HashDataLen The length, in bytes, of the buffer referenced by HashData. 37 @param[in] NewEventHdr Pointer to a TCG_PCR_EVENT_HDR data structure. 38 @param[in] NewEventData Pointer to the new event data. 39 40 @retval EFI_SUCCESS Operation completed successfully. 41 @retval EFI_UNSUPPORTED TPM device not available. 42 @retval EFI_OUT_OF_RESOURCES Out of memory. 43 @retval EFI_DEVICE_ERROR The operation was unsuccessful. 44 **/ 45 typedef 46 EFI_STATUS 47 (EFIAPI *EDKII_TCG_HASH_LOG_EXTEND_EVENT)( 48 IN EDKII_TCG_PPI *This, 49 IN UINT64 Flags, 50 IN UINT8 *HashData, 51 IN UINTN HashDataLen, 52 IN TCG_PCR_EVENT_HDR *NewEventHdr, 53 IN UINT8 *NewEventData 54 ); 55 56 /// 57 /// The EFI_TCG Protocol abstracts TCG activity. 58 /// 59 struct _EDKII_TCG_PPI { 60 EDKII_TCG_HASH_LOG_EXTEND_EVENT HashLogExtendEvent; 61 }; 62 63 extern EFI_GUID gEdkiiTcgPpiGuid; 64 65 #endif 66