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/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2018 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef GRUB_EFI_TPM_HEADER
#define GRUB_EFI_TPM_HEADER 1
#define EFI_TPM_GUID {0xf541796d, 0xa62e, 0x4954, {0xa7, 0x75, 0x95, 0x84, 0xf6, 0x1b, 0x9c, 0xdd }};
#define EFI_TPM2_GUID {0x607f766c, 0x7455, 0x42be, {0x93, 0x0b, 0xe4, 0xd7, 0x6d, 0xb2, 0x72, 0x0f }};
#define TCG_ALG_SHA 0x00000004
/* These structs are as defined in the TCG EFI Protocol Specification, family 2.0. */
struct __TCG_VERSION
{
grub_efi_uint8_t Major;
grub_efi_uint8_t Minor;
grub_efi_uint8_t RevMajor;
grub_efi_uint8_t RevMinor;
};
typedef struct __TCG_VERSION TCG_VERSION;
struct __TCG_EFI_BOOT_SERVICE_CAPABILITY
{
/* Size of this structure. */
grub_efi_uint8_t Size;
TCG_VERSION StructureVersion;
TCG_VERSION ProtocolSpecVersion;
/* Hash algorithms supported by this TPM. */
grub_efi_uint8_t HashAlgorithmBitmap;
/* 1 if TPM present. */
char TPMPresentFlag;
/* 1 if TPM deactivated. */
char TPMDeactivatedFlag;
};
typedef struct __TCG_EFI_BOOT_SERVICE_CAPABILITY TCG_EFI_BOOT_SERVICE_CAPABILITY;
struct tdTCG_PCR_EVENT
{
grub_efi_uint32_t PCRIndex;
grub_efi_uint32_t EventType;
grub_efi_uint8_t digest[20];
grub_efi_uint32_t EventSize;
grub_efi_uint8_t Event[1];
};
typedef struct tdTCG_PCR_EVENT TCG_PCR_EVENT;
struct grub_efi_tpm_protocol
{
grub_efi_status_t
(__grub_efi_api *status_check) (struct grub_efi_tpm_protocol *this,
TCG_EFI_BOOT_SERVICE_CAPABILITY *ProtocolCapability,
grub_efi_uint32_t *TCGFeatureFlags,
grub_efi_physical_address_t *EventLogLocation,
grub_efi_physical_address_t *EventLogLastEntry);
grub_efi_status_t
(__grub_efi_api *hash_all) (struct grub_efi_tpm_protocol *this,
grub_efi_uint8_t *HashData,
grub_efi_uint64_t HashLen,
grub_efi_uint32_t AlgorithmId,
grub_efi_uint64_t *HashedDataLen,
grub_efi_uint8_t **HashedDataResult);
grub_efi_status_t
(__grub_efi_api *log_event) (struct grub_efi_tpm_protocol *this,
TCG_PCR_EVENT *TCGLogData,
grub_efi_uint32_t *EventNumber,
grub_efi_uint32_t Flags);
grub_efi_status_t
(__grub_efi_api *pass_through_to_tpm) (struct grub_efi_tpm_protocol *this,
grub_efi_uint32_t TpmInputParameterBlockSize,
grub_efi_uint8_t *TpmInputParameterBlock,
grub_efi_uint32_t TpmOutputParameterBlockSize,
grub_efi_uint8_t *TpmOutputParameterBlock);
grub_efi_status_t
(__grub_efi_api *log_extend_event) (struct grub_efi_tpm_protocol *this,
grub_efi_physical_address_t HashData,
grub_efi_uint64_t HashDataLen,
grub_efi_uint32_t AlgorithmId,
TCG_PCR_EVENT *TCGLogData,
grub_efi_uint32_t *EventNumber,
grub_efi_physical_address_t *EventLogLastEntry);
};
typedef struct grub_efi_tpm_protocol grub_efi_tpm_protocol_t;
typedef grub_efi_uint32_t EFI_TCG2_EVENT_LOG_BITMAP;
typedef grub_efi_uint32_t EFI_TCG2_EVENT_LOG_FORMAT;
typedef grub_efi_uint32_t EFI_TCG2_EVENT_ALGORITHM_BITMAP;
struct tdEFI_TCG2_VERSION
{
grub_efi_uint8_t Major;
grub_efi_uint8_t Minor;
} GRUB_PACKED;
typedef struct tdEFI_TCG2_VERSION EFI_TCG2_VERSION;
struct tdEFI_TCG2_BOOT_SERVICE_CAPABILITY
{
grub_efi_uint8_t Size;
EFI_TCG2_VERSION StructureVersion;
EFI_TCG2_VERSION ProtocolVersion;
EFI_TCG2_EVENT_ALGORITHM_BITMAP HashAlgorithmBitmap;
EFI_TCG2_EVENT_LOG_BITMAP SupportedEventLogs;
grub_efi_boolean_t TPMPresentFlag;
grub_efi_uint16_t MaxCommandSize;
grub_efi_uint16_t MaxResponseSize;
grub_efi_uint32_t ManufacturerID;
grub_efi_uint32_t NumberOfPcrBanks;
EFI_TCG2_EVENT_ALGORITHM_BITMAP ActivePcrBanks;
};
typedef struct tdEFI_TCG2_BOOT_SERVICE_CAPABILITY EFI_TCG2_BOOT_SERVICE_CAPABILITY;
typedef grub_efi_uint32_t TCG_PCRINDEX;
typedef grub_efi_uint32_t TCG_EVENTTYPE;
struct tdEFI_TCG2_EVENT_HEADER
{
grub_efi_uint32_t HeaderSize;
grub_efi_uint16_t HeaderVersion;
TCG_PCRINDEX PCRIndex;
TCG_EVENTTYPE EventType;
} GRUB_PACKED;
typedef struct tdEFI_TCG2_EVENT_HEADER EFI_TCG2_EVENT_HEADER;
struct tdEFI_TCG2_EVENT
{
grub_efi_uint32_t Size;
EFI_TCG2_EVENT_HEADER Header;
grub_efi_uint8_t Event[1];
} GRUB_PACKED;
typedef struct tdEFI_TCG2_EVENT EFI_TCG2_EVENT;
struct grub_efi_tpm2_protocol
{
grub_efi_status_t
(__grub_efi_api *get_capability) (struct grub_efi_tpm2_protocol *this,
EFI_TCG2_BOOT_SERVICE_CAPABILITY *ProtocolCapability);
grub_efi_status_t
(__grub_efi_api *get_event_log) (struct grub_efi_tpm2_protocol *this,
EFI_TCG2_EVENT_LOG_FORMAT EventLogFormat,
grub_efi_physical_address_t *EventLogLocation,
grub_efi_physical_address_t *EventLogLastEntry,
grub_efi_boolean_t *EventLogTruncated);
grub_efi_status_t
(__grub_efi_api *hash_log_extend_event) (struct grub_efi_tpm2_protocol *this,
grub_efi_uint64_t Flags,
grub_efi_physical_address_t DataToHash,
grub_efi_uint64_t DataToHashLen,
EFI_TCG2_EVENT *EfiTcgEvent);
grub_efi_status_t
(__grub_efi_api *submit_command) (struct grub_efi_tpm2_protocol *this,
grub_efi_uint32_t InputParameterBlockSize,
grub_efi_uint8_t *InputParameterBlock,
grub_efi_uint32_t OutputParameterBlockSize,
grub_efi_uint8_t *OutputParameterBlock);
grub_efi_status_t
(__grub_efi_api *get_active_pcr_banks) (struct grub_efi_tpm2_protocol *this,
grub_efi_uint32_t *ActivePcrBanks);
grub_efi_status_t
(__grub_efi_api *set_active_pcr_banks) (struct grub_efi_tpm2_protocol *this,
grub_efi_uint32_t ActivePcrBanks);
grub_efi_status_t
(__grub_efi_api *get_result_of_set_active_pcr_banks) (struct grub_efi_tpm2_protocol *this,
grub_efi_uint32_t *OperationPresent,
grub_efi_uint32_t *Response);
};
typedef struct grub_efi_tpm2_protocol grub_efi_tpm2_protocol_t;
#endif
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