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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)
/* 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;
uint32_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;
#endif /* _EFI_CAPSULE_H */
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