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#ifndef _BZIMAGE_H
#define _BZIMAGE_H
#include <stdint.h>
/**
* A bzImage header
*
* As documented in Documentation/i386/boot.txt
*/
struct bzimage_header {
/** The size of the setup in sectors
*
* If this field contains 0, assume it contains 4.
*/
uint8_t setup_sects;
/** If set, the root is mounted readonly */
uint16_t root_flags;
/** DO NOT USE - for bootsect.S use only */
uint16_t syssize;
/** DO NOT USE - obsolete */
uint16_t swap_dev;
/** DO NOT USE - for bootsect.S use only */
uint16_t ram_size;
/** Video mode control */
uint16_t vid_mode;
/** Default root device number */
uint16_t root_dev;
/** 0xAA55 magic number */
uint16_t boot_flag;
/** Jump instruction */
uint16_t jump;
/** Magic signature "HdrS" */
uint32_t header;
/** Boot protocol version supported */
uint16_t version;
/** Boot loader hook (see below) */
uint32_t realmode_swtch;
/** The load-low segment (0x1000) (obsolete) */
uint16_t start_sys;
/** Pointer to kernel version string */
uint16_t kernel_version;
/** Boot loader identifier */
uint8_t type_of_loader;
/** Boot protocol option flags */
uint8_t loadflags;
/** Move to high memory size (used with hooks) */
uint16_t setup_move_size;
/** Boot loader hook (see below) */
uint32_t code32_start;
/** initrd load address (set by boot loader) */
uint32_t ramdisk_image;
/** initrd size (set by boot loader) */
uint32_t ramdisk_size;
/** DO NOT USE - for bootsect.S use only */
uint32_t bootsect_kludge;
/** Free memory after setup end */
uint16_t heap_end_ptr;
/** Unused */
uint16_t pad1;
/** 32-bit pointer to the kernel command line */
uint32_t cmd_line_ptr;
/** Highest legal initrd address */
uint32_t initrd_addr_max;
} __attribute__ (( packed ));
/** Offset of bzImage header within kernel image */
#define BZHDR_OFFSET 0x1f1
/** bzImage magic signature value */
#define BZIMAGE_SIGNATURE 0x53726448
#endif /* _BZIMAGE_H */
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