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250 lines
9.3 KiB
250 lines
9.3 KiB
4 years ago
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/** @file
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This protocol is defined to abstract TPM2 hardware access in boot phase.
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Copyright (c) 2013 - 2018, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#ifndef __TREE_H__
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#define __TREE_H__
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#include <IndustryStandard/UefiTcgPlatform.h>
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#include <IndustryStandard/Tpm20.h>
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#define EFI_TREE_PROTOCOL_GUID \
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{0x607f766c, 0x7455, 0x42be, 0x93, 0x0b, 0xe4, 0xd7, 0x6d, 0xb2, 0x72, 0x0f}
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typedef struct _EFI_TREE_PROTOCOL EFI_TREE_PROTOCOL;
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typedef struct _TREE_VERSION {
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UINT8 Major;
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UINT8 Minor;
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} TREE_VERSION;
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typedef UINT32 TREE_EVENT_LOG_BITMAP;
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typedef UINT32 TREE_EVENT_LOG_FORMAT;
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#define TREE_EVENT_LOG_FORMAT_TCG_1_2 0x00000001
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typedef struct _TREE_BOOT_SERVICE_CAPABILITY {
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//
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// Allocated size of the structure passed in
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//
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UINT8 Size;
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//
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// Version of the TREE_BOOT_SERVICE_CAPABILITY structure itself.
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// For this version of the protocol, the Major version shall be set to 1
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// and the Minor version shall be set to 0.
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//
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TREE_VERSION StructureVersion;
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//
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// Version of the TrEE protocol.
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// For this version of the protocol, the Major version shall be set to 1
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// and the Minor version shall be set to 0.
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//
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TREE_VERSION ProtocolVersion;
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//
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// Supported hash algorithms
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//
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UINT32 HashAlgorithmBitmap;
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//
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// Bitmap of supported event log formats
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//
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TREE_EVENT_LOG_BITMAP SupportedEventLogs;
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//
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// False = TrEE not present
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//
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BOOLEAN TrEEPresentFlag;
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//
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// Max size (in bytes) of a command that can be sent to the TrEE
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//
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UINT16 MaxCommandSize;
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//
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// Max size (in bytes) of a response that can be provided by the TrEE
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//
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UINT16 MaxResponseSize;
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//
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// 4-byte Vendor ID (see Trusted Computing Group, "TCG Vendor ID Registry,"
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// Version 1.0, Revision 0.1, August 31, 2007, "TPM Capabilities Vendor ID" section)
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//
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UINT32 ManufacturerID;
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} TREE_BOOT_SERVICE_CAPABILITY_1_0;
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typedef TREE_BOOT_SERVICE_CAPABILITY_1_0 TREE_BOOT_SERVICE_CAPABILITY;
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#define TREE_BOOT_HASH_ALG_SHA1 0x00000001
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#define TREE_BOOT_HASH_ALG_SHA256 0x00000002
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#define TREE_BOOT_HASH_ALG_SHA384 0x00000004
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#define TREE_BOOT_HASH_ALG_SHA512 0x00000008
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//
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// This bit is shall be set when an event shall be extended but not logged.
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//
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#define TREE_EXTEND_ONLY 0x0000000000000001
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//
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// This bit shall be set when the intent is to measure a PE/COFF image.
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//
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#define PE_COFF_IMAGE 0x0000000000000010
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typedef UINT32 TrEE_PCRINDEX;
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typedef UINT32 TrEE_EVENTTYPE;
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#define MAX_PCR_INDEX 23
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#define TREE_EVENT_HEADER_VERSION 1
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#pragma pack(1)
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typedef struct {
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//
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// Size of the event header itself (sizeof(TrEE_EVENT_HEADER)).
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//
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UINT32 HeaderSize;
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//
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// Header version. For this version of this specification, the value shall be 1.
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//
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UINT16 HeaderVersion;
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//
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// Index of the PCR that shall be extended (0 - 23).
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//
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TrEE_PCRINDEX PCRIndex;
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//
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// Type of the event that shall be extended (and optionally logged).
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//
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TrEE_EVENTTYPE EventType;
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} TrEE_EVENT_HEADER;
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typedef struct {
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//
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// Total size of the event including the Size component, the header and the Event data.
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//
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UINT32 Size;
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TrEE_EVENT_HEADER Header;
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UINT8 Event[1];
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} TrEE_EVENT;
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#pragma pack()
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/**
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The EFI_TREE_PROTOCOL GetCapability function call provides protocol
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capability information and state information about the TrEE.
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@param[in] This Indicates the calling context
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@param[out] ProtocolCapability The caller allocates memory for a TREE_BOOT_SERVICE_CAPABILITY
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structure and sets the size field to the size of the structure allocated.
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The callee fills in the fields with the EFI protocol capability information
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and the current TrEE state information up to the number of fields which
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fit within the size of the structure passed in.
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@retval EFI_SUCCESS Operation completed successfully.
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@retval EFI_DEVICE_ERROR The command was unsuccessful.
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The ProtocolCapability variable will not be populated.
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@retval EFI_INVALID_PARAMETER One or more of the parameters are incorrect.
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The ProtocolCapability variable will not be populated.
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@retval EFI_BUFFER_TOO_SMALL The ProtocolCapability variable is too small to hold the full response.
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It will be partially populated (required Size field will be set).
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_TREE_GET_CAPABILITY) (
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IN EFI_TREE_PROTOCOL *This,
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IN OUT TREE_BOOT_SERVICE_CAPABILITY *ProtocolCapability
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);
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/**
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The EFI_TREE_PROTOCOL Get Event Log function call allows a caller to
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retrieve the address of a given event log and its last entry.
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@param[in] This Indicates the calling context
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@param[in] EventLogFormat The type of the event log for which the information is requested.
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@param[out] EventLogLocation A pointer to the memory address of the event log.
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@param[out] EventLogLastEntry If the Event Log contains more than one entry, this is a pointer to the
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address of the start of the last entry in the event log in memory.
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@param[out] EventLogTruncated If the Event Log is missing at least one entry because an event would
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have exceeded the area allocated for events, this value is set to TRUE.
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Otherwise, the value will be FALSE and the Event Log will be complete.
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@retval EFI_SUCCESS Operation completed successfully.
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@retval EFI_INVALID_PARAMETER One or more of the parameters are incorrect
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(e.g. asking for an event log whose format is not supported).
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_TREE_GET_EVENT_LOG) (
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IN EFI_TREE_PROTOCOL *This,
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IN TREE_EVENT_LOG_FORMAT EventLogFormat,
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OUT EFI_PHYSICAL_ADDRESS *EventLogLocation,
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OUT EFI_PHYSICAL_ADDRESS *EventLogLastEntry,
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OUT BOOLEAN *EventLogTruncated
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);
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/**
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The EFI_TREE_PROTOCOL HashLogExtendEvent function call provides callers with
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an opportunity to extend and optionally log events without requiring
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knowledge of actual TPM commands.
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The extend operation will occur even if this function cannot create an event
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log entry (e.g. due to the event log being full).
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@param[in] This Indicates the calling context
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@param[in] Flags Bitmap providing additional information.
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@param[in] DataToHash Physical address of the start of the data buffer to be hashed.
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@param[in] DataToHashLen The length in bytes of the buffer referenced by DataToHash.
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@param[in] Event Pointer to data buffer containing information about the event.
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@retval EFI_SUCCESS Operation completed successfully.
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@retval EFI_DEVICE_ERROR The command was unsuccessful.
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@retval EFI_VOLUME_FULL The extend operation occurred, but the event could not be written to one or more event logs.
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@retval EFI_INVALID_PARAMETER One or more of the parameters are incorrect.
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@retval EFI_UNSUPPORTED The PE/COFF image type is not supported.
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**/
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typedef
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EFI_STATUS
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(EFIAPI * EFI_TREE_HASH_LOG_EXTEND_EVENT) (
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IN EFI_TREE_PROTOCOL *This,
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IN UINT64 Flags,
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IN EFI_PHYSICAL_ADDRESS DataToHash,
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IN UINT64 DataToHashLen,
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IN TrEE_EVENT *Event
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);
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/**
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This service enables the sending of commands to the TrEE.
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@param[in] This Indicates the calling context
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@param[in] InputParameterBlockSize Size of the TrEE input parameter block.
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@param[in] InputParameterBlock Pointer to the TrEE input parameter block.
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@param[in] OutputParameterBlockSize Size of the TrEE output parameter block.
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@param[in] OutputParameterBlock Pointer to the TrEE output parameter block.
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@retval EFI_SUCCESS The command byte stream was successfully sent to the device and a response was successfully received.
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@retval EFI_DEVICE_ERROR The command was not successfully sent to the device or a response was not successfully received from the device.
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@retval EFI_INVALID_PARAMETER One or more of the parameters are incorrect.
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@retval EFI_BUFFER_TOO_SMALL The output parameter block is too small.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_TREE_SUBMIT_COMMAND) (
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IN EFI_TREE_PROTOCOL *This,
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IN UINT32 InputParameterBlockSize,
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IN UINT8 *InputParameterBlock,
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IN UINT32 OutputParameterBlockSize,
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IN UINT8 *OutputParameterBlock
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);
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struct _EFI_TREE_PROTOCOL {
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EFI_TREE_GET_CAPABILITY GetCapability;
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EFI_TREE_GET_EVENT_LOG GetEventLog;
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EFI_TREE_HASH_LOG_EXTEND_EVENT HashLogExtendEvent;
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EFI_TREE_SUBMIT_COMMAND SubmitCommand;
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};
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extern EFI_GUID gEfiTrEEProtocolGuid;
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#endif
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