VirtualBox

source: vbox/trunk/include/iprt/formats/efi-fat.h@ 81823

Last change on this file since 81823 was 81775, checked in by vboxsync, 5 years ago

Runtime/RTEfiFatExtract: Tool to extract single entries from EFI fat binaries (used by Apple)

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File size: 2.6 KB
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1/* $Id: efi-fat.h 81775 2019-11-11 18:14:36Z vboxsync $ */
2/** @file
3 * IPRT, EFI FAT Binary (used by Apple, contains multiple architectures).
4 */
5
6/*
7 * Copyright (C) 2019 Oracle Corporation
8 *
9 * This file is part of VirtualBox Open Source Edition (OSE), as
10 * available from http://www.virtualbox.org. This file is free software;
11 * you can redistribute it and/or modify it under the terms of the GNU
12 * General Public License (GPL) as published by the Free Software
13 * Foundation, in version 2 as it comes in the "COPYING" file of the
14 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16 *
17 * The contents of this file may alternatively be used under the terms
18 * of the Common Development and Distribution License Version 1.0
19 * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
20 * VirtualBox OSE distribution, in which case the provisions of the
21 * CDDL are applicable instead of those of the GPL.
22 *
23 * You may elect to license modified versions of this file under the
24 * terms and conditions of either the GPL or the CDDL or both.
25 */
26
27#ifndef IPRT_INCLUDED_formats_efi_fat_h
28#define IPRT_INCLUDED_formats_efi_fat_h
29#ifndef RT_WITHOUT_PRAGMA_ONCE
30# pragma once
31#endif
32
33#include <iprt/types.h>
34#include <iprt/assertcompile.h>
35
36/*
37 * Definitions come from http://refit.sourceforge.net/info/fat_binary.html
38 */
39
40/**
41 * The header structure.
42 */
43typedef struct EFI_FATHDR
44{
45 /** The magic identifying the header .*/
46 uint32_t u32Magic;
47 /** Number of files (one per architecture) embedded into the file. */
48 uint32_t cFilesEmbedded;
49} EFI_FATHDR;
50AssertCompileSize(EFI_FATHDR, 8);
51typedef EFI_FATHDR *PEFI_FATHDR;
52
53/** The magic identifying a FAT header. */
54#define EFI_FATHDR_MAGIC UINT32_C(0x0ef1fab9)
55
56/**
57 * The direcory entry.
58 */
59typedef struct EFI_FATDIRENTRY
60{
61 /** The CPU type the referenced file is for. */
62 uint32_t u32CpuType;
63 /** The CPU sub-type the referenced file is for. */
64 uint32_t u32CpuSubType;
65 /** Offset in bytes where the file is located. */
66 uint32_t u32OffsetStart;
67 /** Length of the file in bytes. */
68 uint32_t cbFile;
69 /** Alignment used for the file. */
70 uint32_t u32Alignment;
71} EFI_FATDIRENTRY;
72AssertCompileSize(EFI_FATDIRENTRY, 20);
73typedef EFI_FATDIRENTRY *PEFI_FATDIRENTRY;
74
75#define EFI_FATDIRENTRY_CPU_TYPE_X86 UINT32_C(0x7)
76#define EFI_FATDIRENTRY_CPU_TYPE_AMD64 UINT32_C(0x01000007)
77
78#define EFI_FATDIRENTRY_CPU_SUB_TYPE_GENERIC UINT32_C(0x3)
79
80
81#endif /* !IPRT_INCLUDED_formats_efi_fat_h */
82
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