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#ifndef _IPXE_ELTORITO_H
#define _IPXE_ELTORITO_H
/**
* @file
*
* El Torito bootable CD-ROM specification
*
*/
FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
#include <stdint.h>
#include <ipxe/iso9660.h>
/** An El Torito Boot Record Volume Descriptor (fixed portion) */
struct eltorito_descriptor_fixed {
/** Descriptor type */
uint8_t type;
/** Identifier ("CD001") */
uint8_t id[5];
/** Version, must be 1 */
uint8_t version;
/** Boot system indicator; must be "EL TORITO SPECIFICATION" */
uint8_t system_id[32];
} __attribute__ (( packed ));
/** An El Torito Boot Record Volume Descriptor */
struct eltorito_descriptor {
/** Fixed portion */
struct eltorito_descriptor_fixed fixed;
/** Unused */
uint8_t unused[32];
/** Boot catalog sector */
uint32_t sector;
} __attribute__ (( packed ));
/** El Torito Boot Record Volume Descriptor block address */
#define ELTORITO_LBA 17
/** An El Torito Boot Catalog Validation Entry */
struct eltorito_validation_entry {
/** Header ID; must be 1 */
uint8_t header_id;
/** Platform ID
*
* 0 = 80x86
* 1 = PowerPC
* 2 = Mac
*/
uint8_t platform_id;
/** Reserved */
uint16_t reserved;
/** ID string */
uint8_t id_string[24];
/** Checksum word */
uint16_t checksum;
/** Signature; must be 0xaa55 */
uint16_t signature;
} __attribute__ (( packed ));
/** El Torito platform IDs */
enum eltorito_platform_id {
ELTORITO_PLATFORM_X86 = 0x00,
ELTORITO_PLATFORM_POWERPC = 0x01,
ELTORITO_PLATFORM_MAC = 0x02,
};
/** A bootable entry in the El Torito Boot Catalog */
struct eltorito_boot_entry {
/** Boot indicator
*
* Must be @c ELTORITO_BOOTABLE for a bootable ISO image
*/
uint8_t indicator;
/** Media type
*
*/
uint8_t media_type;
/** Load segment */
uint16_t load_segment;
/** System type */
uint8_t filesystem;
/** Unused */
uint8_t reserved_a;
/** Sector count */
uint16_t length;
/** Starting sector */
uint32_t start;
/** Unused */
uint8_t reserved_b[20];
} __attribute__ (( packed ));
/** Boot indicator for a bootable ISO image */
#define ELTORITO_BOOTABLE 0x88
/** El Torito media types */
enum eltorito_media_type {
/** No emulation */
ELTORITO_NO_EMULATION = 0,
};
#endif /* _IPXE_ELTORITO_H */
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