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;; -----------------------------------------------------------------------
;;
;; Copyright 1994-2008 H. Peter Anvin - All Rights Reserved
;;
;; This program is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, Inc., 53 Temple Place Ste 330,
;; Boston MA 02111-1307, USA; either version 2 of the License, or
;; (at your option) any later version; incorporated herein by reference.
;;
;; -----------------------------------------------------------------------
;;
;; kernel.inc
;;
;; Header file for the kernel interface definitions
;;
%ifndef _KERNEL_INC
%define _KERNEL_INC
;;
;; Structure of the real_mode_seg
;;
struc real_mode_seg_t
resb 20h-($-$$) ; org 20h
kern_cmd_magic resw 1 ; 0020 Magic # for command line
kern_cmd_offset resw 1 ; 0022 Offset for kernel command line
resb 497-($-$$) ; org 497d
bs_setupsecs resb 1 ; 01F1 Sectors for setup code (0 -> 4)
bs_rootflags resw 1 ; 01F2 Root readonly flag
bs_syssize resw 1 ; 01F4
bs_swapdev resw 1 ; 01F6 Swap device (obsolete)
bs_ramsize resw 1 ; 01F8 Ramdisk flags, formerly ramdisk size
bs_vidmode resw 1 ; 01FA Video mode
bs_rootdev resw 1 ; 01FC Root device
bs_bootsign resw 1 ; 01FE Boot sector signature (0AA55h)
su_jump resb 1 ; 0200 0EBh
su_jump2 resb 1 ; 0201 Size of following header
su_header resd 1 ; 0202 New setup code: header
su_version resw 1 ; 0206 See linux/arch/i386/boot/setup.S
su_switch resw 1 ; 0208
su_setupseg resw 1 ; 020A
su_startsys resw 1 ; 020C
su_kver resw 1 ; 020E Kernel version pointer
su_loader resb 1 ; 0210 Loader ID
su_loadflags resb 1 ; 0211 Load high flag
su_movesize resw 1 ; 0212
su_code32start resd 1 ; 0214 Start of code loaded high
su_ramdiskat resd 1 ; 0218 Start of initial ramdisk
su_ramdisklen resd 1 ; 021C Length of initial ramdisk
su_bsklugeoffs resw 1 ; 0220
su_bsklugeseg resw 1 ; 0222
su_heapend resw 1 ; 0224
su_pad1 resw 1 ; 0226
su_cmd_line_ptr resd 1 ; 0228
su_ramdisk_max resd 1 ; 022C
resb (0f800h-12)-($-$$)
linux_stack equ $ ; F7F4
linux_fdctab resb 12
cmd_line_here equ $ ; F800 Should be out of the way
endstruc
global cmd_line
cmd_line equ core_real_mode + cmd_line_here
;
; Old kernel command line signature
;
CMD_MAGIC equ 0A33Fh ; Command line magic
;
; If we're loading the command line old-style, we need a smaller
; heap.
;
old_cmd_line_here equ 9800h
old_max_cmd_len equ 2047
old_linux_fdctab equ old_cmd_line_here-12
old_linux_stack equ old_linux_fdctab
;
; Magic number of su_header field
;
HEADER_ID equ 'HdrS' ; HdrS (in littleendian hex)
;
; Flags for the su_loadflags field
;
LOAD_HIGH equ 01h ; Large kernel, load high
QUIET_FLAG equ 20h ; Quiet the kernel
KEEP_SEGMENTS equ 40h ; Don't reload segments
CAN_USE_HEAP equ 80h ; Boot loader reports heap size
;
; ID codes for various modules
;
syslinux_id equ 031h ; 3 = SYSLINUX family; 1 = SYSLINUX
pxelinux_id equ 032h ; 3 = SYSLINUX family; 2 = PXELINUX
isolinux_id equ 033h ; 3 = SYSLINUX family; 3 = ISOLINUX
extlinux_id equ 034h ; 3 = SYSLINUX family; 4 = EXTLINUX
;
; Types of vkernels
;
VK_LOCALBOOT equ -1 ; localboot (no actual kernel loaded)
VK_KERNEL equ 0 ; Choose by filename
VK_LINUX equ 1 ; Linux kernel image
VK_BOOT equ 2 ; Boot sector
VK_BSS equ 3 ; BSS boot sector
VK_PXE equ 4 ; PXE NBP
VK_FDIMAGE equ 5 ; Floppy disk image
VK_COMBOOT equ 6 ; COMBOOT image
VK_COM32 equ 7 ; COM32 image
VK_CONFIG equ 8 ; Configuration file
VK_TYPES equ 9 ; Number of VK types
%endif ; _KERNEL_INC
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