/* * 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 . */ #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 (*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 (*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 (*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 (*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 (*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 (*get_capability) (struct grub_efi_tpm2_protocol *this, EFI_TCG2_BOOT_SERVICE_CAPABILITY * ProtocolCapability); grub_efi_status_t (*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 (*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 (*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 (*get_active_pcr_banks) (struct grub_efi_tpm2_protocol * this, grub_efi_uint32_t * ActivePcrBanks); grub_efi_status_t (*set_active_pcr_banks) (struct grub_efi_tpm2_protocol * this, grub_efi_uint32_t ActivePcrBanks); grub_efi_status_t (*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