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audk/MdePkg/Include/Protocol/Tcg2Protocol.h

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/** @file
TPM2 Protocol as defined in TCG PC Client Platform EFI Protocol Specification Family "2.0".
See http://trustedcomputinggroup.org for the latest specification
Copyright (c) 2015 - 2018, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#ifndef __TCG2_PROTOCOL_H__
#define __TCG2_PROTOCOL_H__
#include <IndustryStandard/UefiTcgPlatform.h>
#include <IndustryStandard/Tpm20.h>
#define EFI_TCG2_PROTOCOL_GUID \
{0x607f766c, 0x7455, 0x42be, { 0x93, 0x0b, 0xe4, 0xd7, 0x6d, 0xb2, 0x72, 0x0f }}
typedef struct tdEFI_TCG2_PROTOCOL EFI_TCG2_PROTOCOL;
typedef struct tdEFI_TCG2_VERSION {
UINT8 Major;
UINT8 Minor;
} EFI_TCG2_VERSION;
typedef UINT32 EFI_TCG2_EVENT_LOG_BITMAP;
typedef UINT32 EFI_TCG2_EVENT_LOG_FORMAT;
typedef UINT32 EFI_TCG2_EVENT_ALGORITHM_BITMAP;
#define EFI_TCG2_EVENT_LOG_FORMAT_TCG_1_2 0x00000001
#define EFI_TCG2_EVENT_LOG_FORMAT_TCG_2 0x00000002
typedef struct tdEFI_TCG2_BOOT_SERVICE_CAPABILITY {
//
// Allocated size of the structure
//
UINT8 Size;
//
// Version of the EFI_TCG2_BOOT_SERVICE_CAPABILITY structure itself.
// For this version of the protocol, the Major version shall be set to 1
// and the Minor version shall be set to 1.
//
EFI_TCG2_VERSION StructureVersion;
//
// Version of the EFI TCG2 protocol.
// For this version of the protocol, the Major version shall be set to 1
// and the Minor version shall be set to 1.
//
EFI_TCG2_VERSION ProtocolVersion;
//
// Supported hash algorithms (this bitmap is determined by the supported PCR
// banks in the TPM and the hashing algorithms supported by the firmware)
//
EFI_TCG2_EVENT_ALGORITHM_BITMAP HashAlgorithmBitmap;
//
// Bitmap of supported event log formats
//
EFI_TCG2_EVENT_LOG_BITMAP SupportedEventLogs;
//
// False = TPM not present
//
BOOLEAN TPMPresentFlag;
//
// Max size (in bytes) of a command that can be sent to the TPM
//
UINT16 MaxCommandSize;
//
// Max size (in bytes) of a response that can be provided by the TPM
//
UINT16 MaxResponseSize;
//
// 4-byte Vendor ID
// (see TCG Vendor ID registry, Section "TPM Capabilities Vendor ID")
//
UINT32 ManufacturerID;
//
// Maximum number of PCR banks (hashing algorithms) supported.
// No granularity is provided to support a specific set of algorithms.
// Minimum value is 1.
//
UINT32 NumberOfPCRBanks;
//
// A bitmap of currently active PCR banks (hashing algorithms).
// This is a subset of the supported hashing algorithms reported in HashAlgorithmBitMap.
// NumberOfPcrBanks defines the number of bits that are set.
//
EFI_TCG2_EVENT_ALGORITHM_BITMAP ActivePcrBanks;
} EFI_TCG2_BOOT_SERVICE_CAPABILITY;
#define EFI_TCG2_BOOT_HASH_ALG_SHA1 0x00000001
#define EFI_TCG2_BOOT_HASH_ALG_SHA256 0x00000002
#define EFI_TCG2_BOOT_HASH_ALG_SHA384 0x00000004
#define EFI_TCG2_BOOT_HASH_ALG_SHA512 0x00000008
#define EFI_TCG2_BOOT_HASH_ALG_SM3_256 0x00000010
//
// This bit is shall be set when an event shall be extended but not logged.
//
#define EFI_TCG2_EXTEND_ONLY 0x0000000000000001
//
// This bit shall be set when the intent is to measure a PE/COFF image.
//
#define PE_COFF_IMAGE 0x0000000000000010
#define MAX_PCR_INDEX 23
#pragma pack(1)
#define EFI_TCG2_EVENT_HEADER_VERSION 1
typedef struct {
//
// Size of the event header itself (sizeof(EFI_TCG2_EVENT_HEADER)).
//
UINT32 HeaderSize;
//
// Header version. For this version of this specification, the value shall be 1.
//
UINT16 HeaderVersion;
//
// Index of the PCR that shall be extended (0 - 23).
//
TCG_PCRINDEX PCRIndex;
//
// Type of the event that shall be extended (and optionally logged).
//
TCG_EVENTTYPE EventType;
} EFI_TCG2_EVENT_HEADER;
typedef struct tdEFI_TCG2_EVENT {
//
// Total size of the event including the Size component, the header and the Event data.
//
UINT32 Size;
EFI_TCG2_EVENT_HEADER Header;
UINT8 Event[1];
} EFI_TCG2_EVENT;
#pragma pack()
/**
The EFI_TCG2_PROTOCOL GetCapability function call provides protocol
capability information and state information.
@param[in] This Indicates the calling context
@param[in, out] ProtocolCapability The caller allocates memory for a EFI_TCG2_BOOT_SERVICE_CAPABILITY
structure and sets the size field to the size of the structure allocated.
The callee fills in the fields with the EFI protocol capability information
and the current EFI TCG2 state information up to the number of fields which
fit within the size of the structure passed in.
@retval EFI_SUCCESS Operation completed successfully.
@retval EFI_DEVICE_ERROR The command was unsuccessful.
The ProtocolCapability variable will not be populated.
@retval EFI_INVALID_PARAMETER One or more of the parameters are incorrect.
The ProtocolCapability variable will not be populated.
@retval EFI_BUFFER_TOO_SMALL The ProtocolCapability variable is too small to hold the full response.
It will be partially populated (required Size field will be set).
**/
typedef
EFI_STATUS
(EFIAPI *EFI_TCG2_GET_CAPABILITY) (
IN EFI_TCG2_PROTOCOL *This,
IN OUT EFI_TCG2_BOOT_SERVICE_CAPABILITY *ProtocolCapability
);
/**
The EFI_TCG2_PROTOCOL Get Event Log function call allows a caller to
retrieve the address of a given event log and its last entry.
@param[in] This Indicates the calling context
@param[in] EventLogFormat The type of the event log for which the information is requested.
@param[out] EventLogLocation A pointer to the memory address of the event log.
@param[out] EventLogLastEntry If the Event Log contains more than one entry, this is a pointer to the
address of the start of the last entry in the event log in memory.
@param[out] EventLogTruncated If the Event Log is missing at least one entry because an event would
have exceeded the area allocated for events, this value is set to TRUE.
Otherwise, the value will be FALSE and the Event Log will be complete.
@retval EFI_SUCCESS Operation completed successfully.
@retval EFI_INVALID_PARAMETER One or more of the parameters are incorrect
(e.g. asking for an event log whose format is not supported).
**/
typedef
EFI_STATUS
(EFIAPI *EFI_TCG2_GET_EVENT_LOG) (
IN EFI_TCG2_PROTOCOL *This,
IN EFI_TCG2_EVENT_LOG_FORMAT EventLogFormat,
OUT EFI_PHYSICAL_ADDRESS *EventLogLocation,
OUT EFI_PHYSICAL_ADDRESS *EventLogLastEntry,
OUT BOOLEAN *EventLogTruncated
);
/**
The EFI_TCG2_PROTOCOL HashLogExtendEvent function call provides callers with
an opportunity to extend and optionally log events without requiring
knowledge of actual TPM commands.
The extend operation will occur even if this function cannot create an event
log entry (e.g. due to the event log being full).
@param[in] This Indicates the calling context
@param[in] Flags Bitmap providing additional information.
@param[in] DataToHash Physical address of the start of the data buffer to be hashed.
@param[in] DataToHashLen The length in bytes of the buffer referenced by DataToHash.
@param[in] EfiTcgEvent Pointer to data buffer containing information about the event.
@retval EFI_SUCCESS Operation completed successfully.
@retval EFI_DEVICE_ERROR The command was unsuccessful.
@retval EFI_VOLUME_FULL The extend operation occurred, but the event could not be written to one or more event logs.
@retval EFI_INVALID_PARAMETER One or more of the parameters are incorrect.
@retval EFI_UNSUPPORTED The PE/COFF image type is not supported.
**/
typedef
EFI_STATUS
(EFIAPI * EFI_TCG2_HASH_LOG_EXTEND_EVENT) (
IN EFI_TCG2_PROTOCOL *This,
IN UINT64 Flags,
IN EFI_PHYSICAL_ADDRESS DataToHash,
IN UINT64 DataToHashLen,
IN EFI_TCG2_EVENT *EfiTcgEvent
);
/**
This service enables the sending of commands to the TPM.
@param[in] This Indicates the calling context
@param[in] InputParameterBlockSize Size of the TPM input parameter block.
@param[in] InputParameterBlock Pointer to the TPM input parameter block.
@param[in] OutputParameterBlockSize Size of the TPM output parameter block.
@param[in] OutputParameterBlock Pointer to the TPM output parameter block.
@retval EFI_SUCCESS The command byte stream was successfully sent to the device and a response was successfully received.
@retval EFI_DEVICE_ERROR The command was not successfully sent to the device or a response was not successfully received from the device.
@retval EFI_INVALID_PARAMETER One or more of the parameters are incorrect.
@retval EFI_BUFFER_TOO_SMALL The output parameter block is too small.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_TCG2_SUBMIT_COMMAND) (
IN EFI_TCG2_PROTOCOL *This,
IN UINT32 InputParameterBlockSize,
IN UINT8 *InputParameterBlock,
IN UINT32 OutputParameterBlockSize,
IN UINT8 *OutputParameterBlock
);
/**
This service returns the currently active PCR banks.
@param[in] This Indicates the calling context
@param[out] ActivePcrBanks Pointer to the variable receiving the bitmap of currently active PCR banks.
@retval EFI_SUCCESS The bitmap of active PCR banks was stored in the ActivePcrBanks parameter.
@retval EFI_INVALID_PARAMETER One or more of the parameters are incorrect.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_TCG2_GET_ACTIVE_PCR_BANKS) (
IN EFI_TCG2_PROTOCOL *This,
OUT UINT32 *ActivePcrBanks
);
/**
This service sets the currently active PCR banks.
@param[in] This Indicates the calling context
@param[in] ActivePcrBanks Bitmap of the requested active PCR banks. At least one bit SHALL be set.
@retval EFI_SUCCESS The bitmap in ActivePcrBank parameter is already active.
@retval EFI_INVALID_PARAMETER One or more of the parameters are incorrect.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_TCG2_SET_ACTIVE_PCR_BANKS) (
IN EFI_TCG2_PROTOCOL *This,
IN UINT32 ActivePcrBanks
);
/**
This service retrieves the result of a previous invocation of SetActivePcrBanks.
@param[in] This Indicates the calling context
@param[out] OperationPresent Non-zero value to indicate a SetActivePcrBank operation was invoked during the last boot.
@param[out] Response The response from the SetActivePcrBank request.
@retval EFI_SUCCESS The result value could be returned.
@retval EFI_INVALID_PARAMETER One or more of the parameters are incorrect.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_TCG2_GET_RESULT_OF_SET_ACTIVE_PCR_BANKS) (
IN EFI_TCG2_PROTOCOL *This,
OUT UINT32 *OperationPresent,
OUT UINT32 *Response
);
struct tdEFI_TCG2_PROTOCOL {
EFI_TCG2_GET_CAPABILITY GetCapability;
EFI_TCG2_GET_EVENT_LOG GetEventLog;
EFI_TCG2_HASH_LOG_EXTEND_EVENT HashLogExtendEvent;
EFI_TCG2_SUBMIT_COMMAND SubmitCommand;
EFI_TCG2_GET_ACTIVE_PCR_BANKS GetActivePcrBanks;
EFI_TCG2_SET_ACTIVE_PCR_BANKS SetActivePcrBanks;
EFI_TCG2_GET_RESULT_OF_SET_ACTIVE_PCR_BANKS GetResultOfSetActivePcrBanks;
};
extern EFI_GUID gEfiTcg2ProtocolGuid;
//
// Log entries after Get Event Log service
//
#define EFI_TCG2_FINAL_EVENTS_TABLE_GUID \
{0x1e2ed096, 0x30e2, 0x4254, { 0xbd, 0x89, 0x86, 0x3b, 0xbe, 0xf8, 0x23, 0x25 }}
extern EFI_GUID gEfiTcg2FinalEventsTableGuid;
typedef struct tdEFI_TCG2_FINAL_EVENTS_TABLE {
//
// The version of this structure.
//
UINT64 Version;
//
// Number of events recorded after invocation of GetEventLog API
//
UINT64 NumberOfEvents;
//
// List of events of type TCG_PCR_EVENT2.
//
//TCG_PCR_EVENT2 Event[1];
} EFI_TCG2_FINAL_EVENTS_TABLE;
#define EFI_TCG2_FINAL_EVENTS_TABLE_VERSION 1
#endif
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