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Diffstat (limited to 'include/iprt/formats/efi-fv.h')
| -rw-r--r-- | include/iprt/formats/efi-fv.h | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/include/iprt/formats/efi-fv.h b/include/iprt/formats/efi-fv.h new file mode 100644 index 00000000..fecefedc --- /dev/null +++ b/include/iprt/formats/efi-fv.h @@ -0,0 +1,131 @@ +/* $Id: efi-fv.h $ */ +/** @file + * IPRT, EFI firmware volume (FV) definitions. + */ + +/* + * Copyright (C) 2021-2023 Oracle and/or its affiliates. + * + * This file is part of VirtualBox base platform packages, as + * available from https://www.virtualbox.org. + * + * This program 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, in version 3 of the + * License. + * + * This program 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 this program; if not, see <https://www.gnu.org/licenses>. + * + * The contents of this file may alternatively be used under the terms + * of the Common Development and Distribution License Version 1.0 + * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included + * in the VirtualBox distribution, in which case the provisions of the + * CDDL are applicable instead of those of the GPL. + * + * You may elect to license modified versions of this file under the + * terms and conditions of either the GPL or the CDDL or both. + * + * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0 + */ + +#ifndef IPRT_INCLUDED_formats_efi_fv_h +#define IPRT_INCLUDED_formats_efi_fv_h +#ifndef RT_WITHOUT_PRAGMA_ONCE +# pragma once +#endif + +#include <iprt/types.h> +#include <iprt/assertcompile.h> +#include <iprt/formats/efi-common.h> + + +/* + * Definitions come from the UEFI PI Spec 1.5 Volume 3 Firmware, chapter 3 "Firmware Storage Code Definitions" + */ + +/** + * The volume header. + */ +typedef struct EFI_FIRMWARE_VOLUME_HEADER +{ + /** Reserved data for the reset vector. */ + uint8_t abZeroVec[16]; + /** The filesystem GUID. */ + EFI_GUID GuidFilesystem; + /** The firmware volume length in bytes including this header. */ + uint64_t cbFv; + /** The signature of the firmware volume header (set to _FVH). */ + uint32_t u32Signature; + /** Firmware volume attributes. */ + uint32_t fAttr; + /** Size of the header in bytes. */ + uint16_t cbFvHdr; + /** Checksum of the header. */ + uint16_t u16Chksum; + /** Offset of the extended header (0 for no extended header). */ + uint16_t offExtHdr; + /** Reserved MBZ. */ + uint8_t bRsvd; + /** Revision of the header. */ + uint8_t bRevision; +} EFI_FIRMWARE_VOLUME_HEADER; +AssertCompileSize(EFI_FIRMWARE_VOLUME_HEADER, 56); +/** Pointer to a EFI firmware volume header. */ +typedef EFI_FIRMWARE_VOLUME_HEADER *PEFI_FIRMWARE_VOLUME_HEADER; +/** Pointer to a const EFI firmware volume header. */ +typedef const EFI_FIRMWARE_VOLUME_HEADER *PCEFI_FIRMWARE_VOLUME_HEADER; + +/** The signature for a firmware volume header. */ +#define EFI_FIRMWARE_VOLUME_HEADER_SIGNATURE RT_MAKE_U32_FROM_U8('_', 'F', 'V', 'H') +/** Revision of the firmware volume header. */ +#define EFI_FIRMWARE_VOLUME_HEADER_REVISION 2 + + +/** + * Firmware block map entry. + */ +typedef struct EFI_FW_BLOCK_MAP +{ + /** Number of blocks for this entry. */ + uint32_t cBlocks; + /** Block size in bytes. */ + uint32_t cbBlock; +} EFI_FW_BLOCK_MAP; +AssertCompileSize(EFI_FW_BLOCK_MAP, 8); +/** Pointer to a firmware volume block map entry. */ +typedef EFI_FW_BLOCK_MAP *PEFI_FW_BLOCK_MAP; +/** Pointer to a const firmware volume block map entry. */ +typedef const EFI_FW_BLOCK_MAP *PCEFI_FW_BLOCK_MAP; + + +/** + * Fault tolerant working block header. + */ +typedef struct EFI_FTW_BLOCK_HEADER +{ + /** GUID identifying the FTW block header. */ + EFI_GUID GuidSignature; + /** The checksum. */ + uint32_t u32Chksum; + /** Flags marking the working block area as valid/invalid. */ + uint32_t fWorkingBlockValid; + /** Size of the write queue. */ + uint64_t cbWriteQueue; +} EFI_FTW_BLOCK_HEADER; +/** Pointer to a fault tolerant working block header. */ +typedef EFI_FTW_BLOCK_HEADER *PEFI_FTW_BLOCK_HEADER; +/** Pointer to a const fault tolerant working block header. */ +typedef const EFI_FTW_BLOCK_HEADER *PCEFI_FTW_BLOCK_HEADER; + +/** The signature for the working block header. */ +#define EFI_WORKING_BLOCK_SIGNATURE_GUID \ + { 0x9e58292b, 0x7c68, 0x497d, { 0xa0, 0xce, 0x65, 0x0, 0xfd, 0x9f, 0x1b, 0x95 }} + +#endif /* !IPRT_INCLUDED_formats_efi_fv_h */ + |