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/*
* Copyright 2009 Red Hat, Inc.
*
* 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; either version 2 of the License, or
* (at your option) any later version.
*
* 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 <http://www.gnu.org/licenses/>.
*
* Author: Peter Jones <pjones@redhat.com>
*/
#ifndef ELTORITO_H
#define ELTORITO_H
#include "iso9660.h"
typedef union {
Sector Raw;
struct {
uint8_t BootRecordIndicator;
char Iso9660[5];
uint8_t Version;
char BootSystemId[32];
uint8_t Reserved0[32];
uint32_t BootCatalogLBA;
} __attribute__((packed));
} BootRecordVolumeDescriptor;
typedef enum {
ValidationIndicator = 0x01,
SectionHeaderIndicator = 0x90,
FinalSectionHeaderIndicator = 0x91,
ExtensionIndicator = 0x44,
} SectionHeaderIndicatorType;
typedef enum {
x86 = 0,
ppc = 1,
m68kmac = 2,
efi=0xef
} PlatformId;
typedef enum {
NotBootable,
Bootable = 0x88
} BootIndicator;
typedef enum {
NoEmulation,
OneTwoDiskette,
OneFourFourDiskette,
TwoEightEightDiskette,
HardDisk
} BootMediaType;
/* A typical boot catalog validation entry looks like this:
* 00000000 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
* 00000010 00 00 00 00 00 00 00 00 00 00 00 00 aa 55 55 aa |.............UU.|
*/
typedef struct {
uint8_t HeaderIndicator;
uint8_t PlatformId;
uint8_t Reserved0[2];
char Id[24];
uint16_t Checksum;
uint8_t FiveFive;
uint8_t AA;
} __attribute__((packed)) BootCatalogValidationEntry;
/* A an Initial/Default Entry looks like this:
* 00000020 88 00 00 00 00 00 1c 00 91 01 00 00 00 00 00 00 |................|
* 00000030 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
*/
typedef struct {
uint8_t BootIndicator;
uint8_t BootMediaType;
uint16_t LoadSegment;
uint8_t SystemType;
uint8_t Reserved0;
uint16_t SectorCount;
uint32_t LoadLBA;
char Reserved1[20];
} BootCatalogDefaultEntry;
/* An EFI Section Header Entry looks like this:
* 00000040 91 ef 01 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
* 00000050 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
*/
typedef struct {
uint8_t HeaderIndicator;
uint8_t PlatformId;
uint16_t SectionEntryCount;
char Id[28];
} BootCatalogSectionHeaderEntry;
typedef enum {
NoSelectionCriteria,
LanguageAndVersionInformation
} SelectionCriteriaType;
/* An EFI Section Entry looks like this:
* 00000060 88 00 00 00 00 00 04 00 b1 00 00 00 00 00 00 00 |................|
* 00000070 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
*/
typedef struct {
uint8_t BootIndicator;
uint8_t BootMediaType;
uint16_t LoadSegment;
uint8_t SystemType;
uint8_t Reserved0;
uint16_t SectorCount;
uint32_t LoadLBA;
uint8_t SelectionCriteriaType;
uint8_t VendorUniqueSelectionCriteria[18];
} BootCatalogSectionEntry;
typedef union {
uint8_t Raw[32];
BootCatalogValidationEntry ValidationEntry;
BootCatalogDefaultEntry DefaultEntry;
BootCatalogSectionHeaderEntry SectionHeaderEntry;
BootCatalogSectionEntry SectionEntry;
} BootCatalogEntry;
/* A(n a)typical boot catalog looks like this:
* Validation Entry:
* 00000000 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
* 00000010 00 00 00 00 00 00 00 00 00 00 00 00 aa 55 55 aa |.............UU.|
* Initial/Default Entry:
* 00000020 88 00 00 00 00 00 1c 00 91 01 00 00 00 00 00 00 |................|
* 00000030 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
* Section Header Entry:
* 00000040 91 ef 01 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
* 00000050 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
* Section Entry:
* 00000060 88 00 00 00 00 00 04 00 b1 00 00 00 00 00 00 00 |................|
* 00000070 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
*/
typedef union {
Sector Raw;
BootCatalogEntry Catalog[64];
} BootCatalog;
#endif /* ELTORITO_H */
/* vim:set shiftwidth=8 softtabstop=8: */
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