diff options
Diffstat (limited to 'roms/u-boot/include/efi_tcg2.h')
| -rw-r--r-- | roms/u-boot/include/efi_tcg2.h | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/roms/u-boot/include/efi_tcg2.h b/roms/u-boot/include/efi_tcg2.h new file mode 100644 index 000000000..bcfb98168 --- /dev/null +++ b/roms/u-boot/include/efi_tcg2.h @@ -0,0 +1,170 @@ +/* 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 <efi_api.h> +#include <tpm-v2.h> + +#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 +#define EFI_TCG2_EXTEND_ONLY 0x0000000000000001 +#define PE_COFF_IMAGE 0x0000000000000010 + +/* 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 + +#define EFI_TCG2_FINAL_EVENTS_TABLE_VERSION 1 + +#define TPM2_EVENT_LOG_SIZE CONFIG_EFI_TCG2_PROTOCOL_EVENTLOG_SIZE + +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 uefi_image_load_event { + efi_physical_addr_t image_location_in_memory; + u64 image_length_in_memory; + u64 image_link_time_address; + u64 length_of_device_path; + struct efi_device_path device_path[]; +}; + +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) + +#define TCG_EFI_SPEC_ID_EVENT_SIGNATURE_03 "Spec ID Event03" +#define TCG_EFI_SPEC_ID_EVENT_SPEC_VERSION_MAJOR_TPM2 2 +#define TCG_EFI_SPEC_ID_EVENT_SPEC_VERSION_MINOR_TPM2 0 +#define TCG_EFI_SPEC_ID_EVENT_SPEC_VERSION_ERRATA_TPM2 2 + +/** + * struct TCG_EfiSpecIdEventAlgorithmSize + * + * @algorithm_id: algorithm defined in enum tpm2_algorithms + * @digest_size: size of the algorithm + */ +struct tcg_efi_spec_id_event_algorithm_size { + u16 algorithm_id; + u16 digest_size; +} __packed; + +/** + * struct TCG_EfiSpecIDEventStruct + * + * @signature: signature, set to Spec ID Event03 + * @platform_class: class defined in TCG ACPI Specification + * Client Common Header. + * @spec_version_minor: minor version + * @spec_version_major: major version + * @spec_version_errata: major version + * @uintn_size: size of the efi_uintn_t fields used in various + * data structures used in this specification. + * 0x01 indicates u32 and 0x02 indicates u64 + * @number_of_algorithms: hashing algorithms used in this event log + * @digest_sizes: array of number_of_algorithms pairs + * 1st member defines the algorithm id + * 2nd member defines the algorithm size + * @vendor_info_size: size in bytes for vendor specific info + * @vendor_info: vendor specific info + */ +struct tcg_efi_spec_id_event { + u8 signature[16]; + u32 platform_class; + u8 spec_version_minor; + u8 spec_version_major; + u8 spec_errata; + u8 uintn_size; + u32 number_of_algorithms; + struct tcg_efi_spec_id_event_algorithm_size digest_sizes[TPM2_NUM_PCR_BANKS]; + u8 vendor_info_size; + /* U-Boot does not provide any vendor info */ + u8 vendor_info[]; +} __packed; + +/** + * struct tdEFI_TCG2_FINAL_EVENTS_TABLE + * @version: version number for this structure + * @number_of_events: number of events recorded after invocation of + * GetEventLog() + * @event: List of events of type tcg_pcr_event2 + */ +struct efi_tcg2_final_events_table { + u64 version; + u64 number_of_events; + struct tcg_pcr_event2 event[]; +}; + +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, + efi_physical_addr_t 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 |