/** @file | |
ElTorito Partitions Format Definition. | |
This file includes some definitions from | |
1. "El Torito" Bootable CD-ROM Format Specification, Version 1.0. | |
2. Volume and File Structure of CDROM for Information Interchange, | |
Standard ECMA-119. (IS0 9660) | |
Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR> | |
SPDX-License-Identifier: BSD-2-Clause-Patent | |
**/ | |
#ifndef _ELTORITO_H_ | |
#define _ELTORITO_H_ | |
// | |
// CDROM_VOLUME_DESCRIPTOR.Types, defined in ISO 9660 | |
// | |
#define CDVOL_TYPE_STANDARD 0x0 | |
#define CDVOL_TYPE_CODED 0x1 | |
#define CDVOL_TYPE_END 0xFF | |
/// | |
/// CDROM_VOLUME_DESCRIPTOR.Id | |
/// | |
#define CDVOL_ID "CD001" | |
/// | |
/// CDROM_VOLUME_DESCRIPTOR.SystemId | |
/// | |
#define CDVOL_ELTORITO_ID "EL TORITO SPECIFICATION" | |
// | |
// Indicator types | |
// | |
#define ELTORITO_ID_CATALOG 0x01 | |
#define ELTORITO_ID_SECTION_BOOTABLE 0x88 | |
#define ELTORITO_ID_SECTION_NOT_BOOTABLE 0x00 | |
#define ELTORITO_ID_SECTION_HEADER 0x90 | |
#define ELTORITO_ID_SECTION_HEADER_FINAL 0x91 | |
// | |
// ELTORITO_CATALOG.Boot.MediaTypes | |
// | |
#define ELTORITO_NO_EMULATION 0x00 | |
#define ELTORITO_12_DISKETTE 0x01 | |
#define ELTORITO_14_DISKETTE 0x02 | |
#define ELTORITO_28_DISKETTE 0x03 | |
#define ELTORITO_HARD_DISK 0x04 | |
#pragma pack(1) | |
/// | |
/// CD-ROM Volume Descriptor | |
/// | |
typedef union { | |
struct { | |
UINT8 Type; | |
CHAR8 Id[5]; ///< "CD001" | |
CHAR8 Reserved[82]; | |
} Unknown; | |
/// | |
/// Boot Record Volume Descriptor, defined in "El Torito" Specification. | |
/// | |
struct { | |
UINT8 Type; ///< Must be 0 | |
CHAR8 Id[5]; ///< "CD001" | |
UINT8 Version; ///< Must be 1 | |
CHAR8 SystemId[32]; ///< "EL TORITO SPECIFICATION" | |
CHAR8 Unused[32]; ///< Must be 0 | |
UINT8 EltCatalog[4]; ///< Absolute pointer to first sector of Boot Catalog | |
CHAR8 Unused2[13]; ///< Must be 0 | |
} BootRecordVolume; | |
/// | |
/// Primary Volume Descriptor, defined in ISO 9660. | |
/// | |
struct { | |
UINT8 Type; | |
CHAR8 Id[5]; ///< "CD001" | |
UINT8 Version; | |
UINT8 Unused; ///< Must be 0 | |
CHAR8 SystemId[32]; | |
CHAR8 VolumeId[32]; | |
UINT8 Unused2[8]; ///< Must be 0 | |
UINT32 VolSpaceSize[2]; ///< the number of Logical Blocks | |
} PrimaryVolume; | |
} CDROM_VOLUME_DESCRIPTOR; | |
/// | |
/// Catalog Entry | |
/// | |
typedef union { | |
struct { | |
CHAR8 Reserved[0x20]; | |
} Unknown; | |
/// | |
/// Catalog validation entry (Catalog header) | |
/// | |
struct { | |
UINT8 Indicator; ///< Must be 01 | |
UINT8 PlatformId; | |
UINT16 Reserved; | |
CHAR8 ManufacId[24]; | |
UINT16 Checksum; | |
UINT16 Id55AA; | |
} Catalog; | |
/// | |
/// Initial/Default Entry or Section Entry | |
/// | |
struct { | |
UINT8 Indicator; ///< 88 = Bootable, 00 = Not Bootable | |
UINT8 MediaType : 4; | |
UINT8 Reserved1 : 4; ///< Must be 0 | |
UINT16 LoadSegment; | |
UINT8 SystemType; | |
UINT8 Reserved2; ///< Must be 0 | |
UINT16 SectorCount; | |
UINT32 Lba; | |
} Boot; | |
/// | |
/// Section Header Entry | |
/// | |
struct { | |
UINT8 Indicator; ///< 90 - Header, more header follw, 91 - Final Header | |
UINT8 PlatformId; | |
UINT16 SectionEntries; ///< Number of section entries following this header | |
CHAR8 Id[28]; | |
} Section; | |
} ELTORITO_CATALOG; | |
#pragma pack() | |
#endif |