/* SPDX-License-Identifier: GPL-2.0+ */ /* * Defines data structures and APIs that allow an OS to interact with UEFI * firmware to query information about the device * * Copyright (c) 2020, Linaro Limited */ #if !defined _EFI_TCG2_PROTOCOL_H_ #define _EFI_TCG2_PROTOCOL_H_ #include #define EFI_TCG2_PROTOCOL_GUID \ EFI_GUID(0x607f766c, 0x7455, 0x42be, 0x93, \ 0x0b, 0xe4, 0xd7, 0x6d, 0xb2, 0x72, 0x0f) /* TPMV2 only */ #define TCG2_EVENT_LOG_FORMAT_TCG_2 0x00000002 /* Algorithm Registry */ #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 typedef u32 efi_tcg_event_log_bitmap; typedef u32 efi_tcg_event_log_format; typedef u32 efi_tcg_event_algorithm_bitmap; struct efi_tcg2_version { u8 major; u8 minor; }; struct efi_tcg2_event_header { u32 header_size; u16 header_version; u32 pcr_index; u32 event_type; } __packed; struct efi_tcg2_event { u32 size; struct efi_tcg2_event_header header; u8 event[]; } __packed; struct efi_tcg2_boot_service_capability { u8 size; struct efi_tcg2_version structure_version; struct efi_tcg2_version protocol_version; efi_tcg_event_algorithm_bitmap hash_algorithm_bitmap; efi_tcg_event_log_bitmap supported_event_logs; u8 tpm_present_flag; u16 max_command_size; u16 max_response_size; u32 manufacturer_id; u32 number_of_pcr_banks; efi_tcg_event_algorithm_bitmap active_pcr_banks; }; #define boot_service_capability_min \ sizeof(struct efi_tcg2_boot_service_capability) - \ offsetof(struct efi_tcg2_boot_service_capability, number_of_pcr_banks) struct efi_tcg2_protocol { efi_status_t (EFIAPI * get_capability)(struct efi_tcg2_protocol *this, struct efi_tcg2_boot_service_capability *capability); efi_status_t (EFIAPI * get_eventlog)(struct efi_tcg2_protocol *this, efi_tcg_event_log_format log_format, u64 *event_log_location, u64 *event_log_last_entry, bool *event_log_truncated); efi_status_t (EFIAPI * hash_log_extend_event)(struct efi_tcg2_protocol *this, u64 flags, u64 data_to_hash, u64 data_to_hash_len, struct efi_tcg2_event *efi_tcg_event); efi_status_t (EFIAPI * submit_command)(struct efi_tcg2_protocol *this, u32 input_parameter_block_size, u8 *input_parameter_block, u32 output_parameter_block_size, u8 *output_parameter_block); efi_status_t (EFIAPI * get_active_pcr_banks)(struct efi_tcg2_protocol *this, u32 *active_pcr_banks); efi_status_t (EFIAPI * set_active_pcr_banks)(struct efi_tcg2_protocol *this, u32 active_pcr_banks); efi_status_t (EFIAPI * get_result_of_set_active_pcr_banks)(struct efi_tcg2_protocol *this, u32 *operation_present, u32 *response); }; #endif