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- /* SPDX-License-Identifier: GPL-2.0 */
- /*
- * Copyright 2021 Linaro Limited
- * Author: AKASHI Takahiro
- *
- * derived from efi.h and efi_api.h to make the file POSIX-compliant
- */
- #ifndef _EFI_CAPSULE_H
- #define _EFI_CAPSULE_H
- #include <stdint.h>
- /*
- * Gcc's predefined attributes are not recognized by clang.
- */
- #ifndef __packed
- #define __packed __attribute__((__packed__))
- #endif
- #ifndef __aligned
- #define __aligned(x) __attribute__((__aligned__(x)))
- #endif
- typedef struct {
- uint8_t b[16];
- } efi_guid_t __aligned(8);
- #define EFI_GUID(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7) \
- {{ (a) & 0xff, ((a) >> 8) & 0xff, ((a) >> 16) & 0xff, \
- ((a) >> 24) & 0xff, \
- (b) & 0xff, ((b) >> 8) & 0xff, \
- (c) & 0xff, ((c) >> 8) & 0xff, \
- (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) } }
- #define EFI_FIRMWARE_MANAGEMENT_CAPSULE_ID_GUID \
- EFI_GUID(0x6dcbd5ed, 0xe82d, 0x4c44, 0xbd, 0xa1, \
- 0x71, 0x94, 0x19, 0x9a, 0xd9, 0x2a)
- #define EFI_CERT_TYPE_PKCS7_GUID \
- EFI_GUID(0x4aafd29d, 0x68df, 0x49ee, 0x8a, 0xa9, \
- 0x34, 0x7d, 0x37, 0x56, 0x65, 0xa7)
- #define FW_ACCEPT_OS_GUID \
- EFI_GUID(0x0c996046, 0xbcc0, 0x4d04, 0x85, 0xec, \
- 0xe1, 0xfc, 0xed, 0xf1, 0xc6, 0xf8)
- #define FW_REVERT_OS_GUID \
- EFI_GUID(0xacd58b4b, 0xc0e8, 0x475f, 0x99, 0xb5, \
- 0x6b, 0x3f, 0x7e, 0x07, 0xaa, 0xf0)
- /* flags */
- #define CAPSULE_FLAGS_PERSIST_ACROSS_RESET 0x00010000
- struct efi_capsule_header {
- efi_guid_t capsule_guid;
- uint32_t header_size;
- uint32_t flags;
- uint32_t capsule_image_size;
- } __packed;
- struct efi_firmware_management_capsule_header {
- uint32_t version;
- uint16_t embedded_driver_count;
- uint16_t payload_item_count;
- uint64_t item_offset_list[];
- } __packed;
- /* image_capsule_support */
- #define CAPSULE_SUPPORT_AUTHENTICATION 0x0000000000000001
- struct efi_firmware_management_capsule_image_header {
- uint32_t version;
- efi_guid_t update_image_type_id;
- uint8_t update_image_index;
- uint8_t reserved[3];
- uint32_t update_image_size;
- uint32_t update_vendor_code_size;
- uint64_t update_hardware_instance;
- uint64_t image_capsule_support;
- } __packed;
- /**
- * win_certificate_uefi_guid - A certificate that encapsulates
- * a GUID-specific signature
- *
- * @hdr: Windows certificate header, cf. WIN_CERTIFICATE
- * @cert_type: Certificate type
- */
- struct win_certificate_uefi_guid {
- struct {
- uint32_t dwLength;
- uint16_t wRevision;
- uint16_t wCertificateType;
- } hdr;
- efi_guid_t cert_type;
- } __packed;
- /**
- * efi_firmware_image_authentication - Capsule authentication method
- * descriptor
- *
- * This structure describes an authentication information for
- * a capsule with IMAGE_ATTRIBUTE_AUTHENTICATION_REQUIRED set
- * and should be included as part of the capsule.
- * Only EFI_CERT_TYPE_PKCS7_GUID is accepted.
- *
- * @monotonic_count: Count to prevent replay
- * @auth_info: Authentication info
- */
- struct efi_firmware_image_authentication {
- uint64_t monotonic_count;
- struct win_certificate_uefi_guid auth_info;
- } __packed;
- /* fmp payload header */
- #define SIGNATURE_16(A, B) ((A) | ((B) << 8))
- #define SIGNATURE_32(A, B, C, D) \
- (SIGNATURE_16(A, B) | (SIGNATURE_16(C, D) << 16))
- #define FMP_PAYLOAD_HDR_SIGNATURE SIGNATURE_32('M', 'S', 'S', '1')
- /**
- * struct fmp_payload_header - EDK2 header for the FMP payload
- *
- * This structure describes the header which is preprended to the
- * FMP payload by the edk2 capsule generation scripts.
- *
- * @signature: Header signature used to identify the header
- * @header_size: Size of the structure
- * @fw_version: Firmware versions used
- * @lowest_supported_version: Lowest supported version (not used)
- */
- struct fmp_payload_header {
- uint32_t signature;
- uint32_t header_size;
- uint32_t fw_version;
- uint32_t lowest_supported_version;
- };
- struct fmp_payload_header_params {
- bool have_header;
- uint32_t fw_version;
- };
- #endif /* _EFI_CAPSULE_H */
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