[int13] Split out ISO9660 and El Torito definitions to separate header files

Signed-off-by: Michael Brown <mcb30@ipxe.org>

1 files changed, 103 insertions, 0 deletions

diff --git a/src/include/ipxe/eltorito.h b/src/include/ipxe/eltorito.h
new file mode 100644
index 000000000..3302b38b6
--- /dev/null
+++ b/src/include/ipxe/eltorito.h
@@ -0,0 +1,103 @@
+#ifndef _IPXE_ELTORITO_H
+#define _IPXE_ELTORITO_H
+
+/**
+ * @file
+ *
+ * El Torito bootable CD-ROM specification
+ *
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+#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 */