#include <stdint.h>

Data Structures
struct	bzimage_header
	A bzImage header. More...

struct	bzimage_cmdline
	bzImage command-line structure used by older kernels More...

Macros
#define	BZI_HDR_OFFSET 0x1f1
	Offset of bzImage header within kernel image. More...

#define	BZI_BOOT_FLAG 0xaa55
	bzImage boot flag value More...

#define	BZI_SIGNATURE 0x53726448
	bzImage magic signature value More...

#define	BZI_LOADER_TYPE_ETHERBOOT 0x40
	bzImage boot loader identifier for Etherboot More...

#define	BZI_LOADER_TYPE_IPXE ( BZI_LOADER_TYPE_ETHERBOOT \| 0x06 )
	bzImage boot loader identifier for iPXE More...

#define	BZI_LOAD_HIGH 0x01
	bzImage "load high" flag More...

#define	BZI_LOAD_HIGH_ADDR 0x100000
	Load address for high-loaded kernels. More...

#define	BZI_LOAD_LOW_ADDR 0x10000
	Load address for low-loaded kernels. More...

#define	BZI_CAN_USE_HEAP 0x80
	bzImage "kernel can use heap" flag More...

#define	BZI_VID_MODE_NORMAL 0xffff
	bzImage special video mode "normal" More...

#define	BZI_VID_MODE_EXT 0xfffe
	bzImage special video mode "ext" More...

#define	BZI_VID_MODE_ASK 0xfffd
	bzImage special video mode "ask" More...

#define	BZI_INITRD_MAX 0x37ffffff
	bzImage maximum initrd address for versions < 2.03 More...

#define	BZI_CMDLINE_OFFSET 0x20
	Offset of bzImage command-line structure within kernel image. More...

#define	BZI_CMDLINE_MAGIC 0xa33f
	bzImage command line present magic marker value More...

#define	BZI_ASSUMED_RM_SIZE 0x8000
	Assumed size of real-mode portion (including .bss) More...

#define	BZI_STACK_SIZE 0x1000
	Amount of stack space to provide. More...

#define	BZI_CMDLINE_SIZE 0x7ff
	Maximum size of command line. More...

Functions
	FILE_LICENCE (GPL2_OR_LATER_OR_UBDL)

struct bzimage_header	__attribute__ ((packed))

Variables
uint8_t	setup_sects
	The size of the setup in sectors. More...

uint16_t	root_flags
	If set, the root is mounted readonly. More...

uint16_t	syssize
	DO NOT USE - for bootsect.S use only. More...

uint16_t	swap_dev
	DO NOT USE - obsolete. More...

uint16_t	ram_size
	DO NOT USE - for bootsect.S use only. More...

uint16_t	vid_mode
	Video mode control. More...

uint16_t	root_dev
	Default root device number. More...

uint16_t	boot_flag
	0xAA55 magic number More...

uint16_t	jump
	Jump instruction. More...

uint32_t	header
	Magic signature "HdrS". More...

uint16_t	version
	Boot protocol version supported. More...

uint32_t	realmode_swtch
	Boot loader hook (see below) More...

uint16_t	start_sys
	The load-low segment (0x1000) (obsolete) More...

uint16_t	kernel_version
	Pointer to kernel version string. More...

uint8_t	type_of_loader
	Boot loader identifier. More...

uint8_t	loadflags
	Boot protocol option flags. More...

uint16_t	setup_move_size
	Move to high memory size (used with hooks) More...

uint32_t	code32_start
	Boot loader hook (see below) More...

uint32_t	ramdisk_image
	initrd load address (set by boot loader) More...

uint32_t	ramdisk_size
	initrd size (set by boot loader) More...

uint32_t	bootsect_kludge
	DO NOT USE - for bootsect.S use only. More...

uint16_t	heap_end_ptr
	Free memory after setup end. More...

uint16_t	pad1
	Unused. More...

uint32_t	cmd_line_ptr
	32-bit pointer to the kernel command line More...

uint32_t	initrd_addr_max
	Highest legal initrd address. More...

uint32_t	kernel_alignment
	Physical addr alignment required for kernel. More...

uint8_t	relocatable_kernel
	Whether kernel is relocatable or not. More...

uint8_t	pad2 [3]
	Unused. More...

uint32_t	cmdline_size
	Maximum size of the kernel command line. More...

uint16_t	magic
	Magic signature. More...

uint16_t	offset
	Offset to command line. More...

Macro Definition Documentation

◆ BZI_HDR_OFFSET

#define BZI_HDR_OFFSET 0x1f1

Offset of bzImage header within kernel image.

Definition at line 78 of file bzimage.h.

◆ BZI_BOOT_FLAG

#define BZI_BOOT_FLAG 0xaa55

bzImage boot flag value

Definition at line 81 of file bzimage.h.

◆ BZI_SIGNATURE

#define BZI_SIGNATURE 0x53726448

bzImage magic signature value

Definition at line 84 of file bzimage.h.

◆ BZI_LOADER_TYPE_ETHERBOOT

#define BZI_LOADER_TYPE_ETHERBOOT 0x40

bzImage boot loader identifier for Etherboot

Definition at line 87 of file bzimage.h.

◆ BZI_LOADER_TYPE_IPXE

#define BZI_LOADER_TYPE_IPXE ( BZI_LOADER_TYPE_ETHERBOOT | 0x06 )

bzImage boot loader identifier for iPXE

We advertise ourselves as Etherboot version 6.

Definition at line 93 of file bzimage.h.

◆ BZI_LOAD_HIGH

#define BZI_LOAD_HIGH 0x01

bzImage "load high" flag

Definition at line 96 of file bzimage.h.

◆ BZI_LOAD_HIGH_ADDR

#define BZI_LOAD_HIGH_ADDR 0x100000

Load address for high-loaded kernels.

Definition at line 99 of file bzimage.h.

◆ BZI_LOAD_LOW_ADDR

#define BZI_LOAD_LOW_ADDR 0x10000

Load address for low-loaded kernels.

Definition at line 102 of file bzimage.h.

◆ BZI_CAN_USE_HEAP

#define BZI_CAN_USE_HEAP 0x80

bzImage "kernel can use heap" flag

Definition at line 105 of file bzimage.h.

◆ BZI_VID_MODE_NORMAL

#define BZI_VID_MODE_NORMAL 0xffff

bzImage special video mode "normal"

Definition at line 108 of file bzimage.h.

◆ BZI_VID_MODE_EXT

#define BZI_VID_MODE_EXT 0xfffe

bzImage special video mode "ext"

Definition at line 111 of file bzimage.h.

◆ BZI_VID_MODE_ASK

#define BZI_VID_MODE_ASK 0xfffd

bzImage special video mode "ask"

Definition at line 114 of file bzimage.h.

◆ BZI_INITRD_MAX

#define BZI_INITRD_MAX 0x37ffffff

bzImage maximum initrd address for versions < 2.03

Definition at line 117 of file bzimage.h.

◆ BZI_CMDLINE_OFFSET

#define BZI_CMDLINE_OFFSET 0x20

Offset of bzImage command-line structure within kernel image.

Definition at line 128 of file bzimage.h.

◆ BZI_CMDLINE_MAGIC

#define BZI_CMDLINE_MAGIC 0xa33f

bzImage command line present magic marker value

Definition at line 131 of file bzimage.h.

◆ BZI_ASSUMED_RM_SIZE

#define BZI_ASSUMED_RM_SIZE 0x8000

Assumed size of real-mode portion (including .bss)

Definition at line 134 of file bzimage.h.

◆ BZI_STACK_SIZE

#define BZI_STACK_SIZE 0x1000

Amount of stack space to provide.

Definition at line 137 of file bzimage.h.

◆ BZI_CMDLINE_SIZE

#define BZI_CMDLINE_SIZE 0x7ff

Maximum size of command line.

Definition at line 140 of file bzimage.h.

Function Documentation

◆ FILE_LICENCE()

FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL )

◆ attribute()

struct bzimage_header __attribute__ ( (packed) )

Variable Documentation

◆ setup_sects

uint8_t setup_sects

The size of the setup in sectors.

If this field contains 0, assume it contains 4.

Definition at line 9 of file bzimage.h.

◆ root_flags

uint16_t root_flags

If set, the root is mounted readonly.

Definition at line 11 of file bzimage.h.

◆ syssize

uint16_t syssize

DO NOT USE - for bootsect.S use only.

Definition at line 13 of file bzimage.h.

Referenced by bzimage_parse_header().

◆ swap_dev

uint16_t swap_dev

DO NOT USE - obsolete.

Definition at line 15 of file bzimage.h.

◆ ram_size

uint16_t ram_size

DO NOT USE - for bootsect.S use only.

Definition at line 17 of file bzimage.h.

◆ vid_mode

uint16_t vid_mode

Video mode control.

Definition at line 19 of file bzimage.h.

◆ root_dev

uint16_t root_dev

Default root device number.

Definition at line 21 of file bzimage.h.

◆ boot_flag

uint16_t boot_flag

0xAA55 magic number

Definition at line 23 of file bzimage.h.

◆ jump

uint16_t jump

Jump instruction.

Definition at line 25 of file bzimage.h.

◆ header

uint32_t header

Magic signature "HdrS".

Definition at line 27 of file bzimage.h.

◆ version

uint16_t version

Boot protocol version supported.

Definition at line 29 of file bzimage.h.

◆ realmode_swtch

uint32_t realmode_swtch

Boot loader hook (see below)

Definition at line 31 of file bzimage.h.

◆ start_sys

uint16_t start_sys

The load-low segment (0x1000) (obsolete)

Definition at line 33 of file bzimage.h.

◆ kernel_version

uint16_t kernel_version

Pointer to kernel version string.

Definition at line 35 of file bzimage.h.

◆ type_of_loader

uint8_t type_of_loader

Boot loader identifier.

Definition at line 37 of file bzimage.h.

◆ loadflags

uint8_t loadflags

Boot protocol option flags.

Definition at line 39 of file bzimage.h.

◆ setup_move_size

uint16_t setup_move_size

Move to high memory size (used with hooks)

Definition at line 41 of file bzimage.h.

◆ code32_start

uint32_t code32_start

Boot loader hook (see below)

Definition at line 43 of file bzimage.h.

◆ ramdisk_image

uint32_t ramdisk_image

initrd load address (set by boot loader)

Definition at line 45 of file bzimage.h.

◆ ramdisk_size

uint32_t ramdisk_size

initrd size (set by boot loader)

Definition at line 47 of file bzimage.h.

◆ bootsect_kludge

uint32_t bootsect_kludge

DO NOT USE - for bootsect.S use only.

Definition at line 49 of file bzimage.h.

◆ heap_end_ptr

uint16_t heap_end_ptr

Free memory after setup end.

Definition at line 51 of file bzimage.h.

◆ pad1

uint16_t pad1

Unused.

Definition at line 53 of file bzimage.h.

◆ cmd_line_ptr

uint32_t cmd_line_ptr

32-bit pointer to the kernel command line

Definition at line 55 of file bzimage.h.

◆ initrd_addr_max

uint32_t initrd_addr_max

Highest legal initrd address.

Definition at line 57 of file bzimage.h.

◆ kernel_alignment

uint32_t kernel_alignment

Physical addr alignment required for kernel.

Definition at line 59 of file bzimage.h.

◆ relocatable_kernel

uint8_t relocatable_kernel

Whether kernel is relocatable or not.

Definition at line 61 of file bzimage.h.

◆ pad2

uint8_t pad2[3]

Unused.

Definition at line 63 of file bzimage.h.

◆ cmdline_size

uint32_t cmdline_size

Maximum size of the kernel command line.

Definition at line 65 of file bzimage.h.

◆ magic

uint16_t magic

Magic signature.

Definition at line 6 of file bzimage.h.

◆ offset

uint16_t offset

Offset to command line.

Definition at line 8 of file bzimage.h.

Data Structures

Macros

Functions

Variables

Macro Definition Documentation

◆ BZI_HDR_OFFSET

◆ BZI_BOOT_FLAG

◆ BZI_SIGNATURE

◆ BZI_LOADER_TYPE_ETHERBOOT

◆ BZI_LOADER_TYPE_IPXE

◆ BZI_LOAD_HIGH

◆ BZI_LOAD_HIGH_ADDR

◆ BZI_LOAD_LOW_ADDR

◆ BZI_CAN_USE_HEAP

◆ BZI_VID_MODE_NORMAL

◆ BZI_VID_MODE_EXT

◆ BZI_VID_MODE_ASK

◆ BZI_INITRD_MAX

◆ BZI_CMDLINE_OFFSET

◆ BZI_CMDLINE_MAGIC

◆ BZI_ASSUMED_RM_SIZE

◆ BZI_STACK_SIZE

◆ BZI_CMDLINE_SIZE

Function Documentation

◆ FILE_LICENCE()

◆ __attribute__()

Variable Documentation

◆ setup_sects

◆ root_flags

◆ syssize

◆ swap_dev

◆ ram_size

◆ vid_mode

◆ root_dev

◆ boot_flag

◆ jump

◆ header

◆ version

◆ realmode_swtch

◆ start_sys

◆ kernel_version

◆ type_of_loader

◆ loadflags

◆ setup_move_size

◆ code32_start

◆ ramdisk_image

◆ ramdisk_size

◆ bootsect_kludge

◆ heap_end_ptr

◆ pad1

◆ cmd_line_ptr

◆ initrd_addr_max

◆ kernel_alignment

◆ relocatable_kernel

◆ pad2

◆ cmdline_size

◆ magic

◆ offset

◆ attribute()