| 1 | ;; ----------------------------------------------------------------------- |
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| 2 | ;; |
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| 3 | ;; Copyright 1994-2008 H. Peter Anvin - All Rights Reserved |
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| 4 | ;; |
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| 5 | ;; This program is free software; you can redistribute it and/or modify |
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| 6 | ;; it under the terms of the GNU General Public License as published by |
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| 7 | ;; the Free Software Foundation, Inc., 53 Temple Place Ste 330, |
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| 8 | ;; Boston MA 02111-1307, USA; either version 2 of the License, or |
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| 9 | ;; (at your option) any later version; incorporated herein by reference. |
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| 10 | ;; |
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| 11 | ;; ----------------------------------------------------------------------- |
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| 12 | |
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| 13 | ;; |
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| 14 | ;; kernel.inc |
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| 15 | ;; |
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| 16 | ;; Header file for the kernel interface definitions |
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| 17 | ;; |
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| 18 | |
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| 19 | %ifndef _KERNEL_INC |
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| 20 | %define _KERNEL_INC |
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| 21 | |
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| 22 | ;; |
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| 23 | ;; Structure of the real_mode_seg |
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| 24 | ;; |
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| 25 | |
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| 26 | struc real_mode_seg_t |
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| 27 | resb 20h-($-$$) ; org 20h |
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| 28 | kern_cmd_magic resw 1 ; 0020 Magic # for command line |
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| 29 | kern_cmd_offset resw 1 ; 0022 Offset for kernel command line |
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| 30 | resb 497-($-$$) ; org 497d |
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| 31 | bs_setupsecs resb 1 ; 01F1 Sectors for setup code (0 -> 4) |
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| 32 | bs_rootflags resw 1 ; 01F2 Root readonly flag |
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| 33 | bs_syssize resw 1 ; 01F4 |
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| 34 | bs_swapdev resw 1 ; 01F6 Swap device (obsolete) |
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| 35 | bs_ramsize resw 1 ; 01F8 Ramdisk flags, formerly ramdisk size |
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| 36 | bs_vidmode resw 1 ; 01FA Video mode |
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| 37 | bs_rootdev resw 1 ; 01FC Root device |
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| 38 | bs_bootsign resw 1 ; 01FE Boot sector signature (0AA55h) |
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| 39 | su_jump resb 1 ; 0200 0EBh |
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| 40 | su_jump2 resb 1 ; 0201 Size of following header |
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| 41 | su_header resd 1 ; 0202 New setup code: header |
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| 42 | su_version resw 1 ; 0206 See linux/arch/i386/boot/setup.S |
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| 43 | su_switch resw 1 ; 0208 |
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| 44 | su_setupseg resw 1 ; 020A |
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| 45 | su_startsys resw 1 ; 020C |
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| 46 | su_kver resw 1 ; 020E Kernel version pointer |
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| 47 | su_loader resb 1 ; 0210 Loader ID |
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| 48 | su_loadflags resb 1 ; 0211 Load high flag |
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| 49 | su_movesize resw 1 ; 0212 |
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| 50 | su_code32start resd 1 ; 0214 Start of code loaded high |
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| 51 | su_ramdiskat resd 1 ; 0218 Start of initial ramdisk |
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| 52 | su_ramdisklen resd 1 ; 021C Length of initial ramdisk |
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| 53 | su_bsklugeoffs resw 1 ; 0220 |
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| 54 | su_bsklugeseg resw 1 ; 0222 |
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| 55 | su_heapend resw 1 ; 0224 |
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| 56 | su_pad1 resw 1 ; 0226 |
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| 57 | su_cmd_line_ptr resd 1 ; 0228 |
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| 58 | su_ramdisk_max resd 1 ; 022C |
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| 59 | resb (0f800h-12)-($-$$) |
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| 60 | linux_stack equ $ ; F7F4 |
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| 61 | linux_fdctab resb 12 |
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| 62 | cmd_line_here equ $ ; F800 Should be out of the way |
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| 63 | endstruc |
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| 64 | |
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| 65 | ; |
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| 66 | ; Old kernel command line signature |
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| 67 | ; |
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| 68 | CMD_MAGIC equ 0A33Fh ; Command line magic |
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| 69 | |
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| 70 | ; |
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| 71 | ; If we're loading the command line old-style, we need a smaller |
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| 72 | ; heap. |
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| 73 | ; |
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| 74 | old_cmd_line_here equ 9800h |
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| 75 | old_max_cmd_len equ 2047 |
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| 76 | old_linux_fdctab equ old_cmd_line_here-12 |
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| 77 | old_linux_stack equ old_linux_fdctab |
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| 78 | |
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| 79 | ; |
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| 80 | ; Magic number of su_header field |
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| 81 | ; |
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| 82 | HEADER_ID equ 'HdrS' ; HdrS (in littleendian hex) |
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| 83 | |
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| 84 | ; |
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| 85 | ; Flags for the su_loadflags field |
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| 86 | ; |
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| 87 | LOAD_HIGH equ 01h ; Large kernel, load high |
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| 88 | QUIET_FLAG equ 20h ; Quiet the kernel |
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| 89 | KEEP_SEGMENTS equ 40h ; Don't reload segments |
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| 90 | CAN_USE_HEAP equ 80h ; Boot loader reports heap size |
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| 91 | |
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| 92 | ; |
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| 93 | ; ID codes for various modules |
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| 94 | ; |
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| 95 | syslinux_id equ 031h ; 3 = SYSLINUX family; 1 = SYSLINUX |
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| 96 | pxelinux_id equ 032h ; 3 = SYSLINUX family; 2 = PXELINUX |
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| 97 | isolinux_id equ 033h ; 3 = SYSLINUX family; 3 = ISOLINUX |
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| 98 | extlinux_id equ 034h ; 3 = SYSLINUX family; 4 = EXTLINUX |
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| 99 | |
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| 100 | ; |
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| 101 | ; Types of vkernels |
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| 102 | ; |
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| 103 | VK_LOCALBOOT equ -1 ; localboot (no actual kernel loaded) |
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| 104 | VK_KERNEL equ 0 ; Choose by filename |
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| 105 | VK_LINUX equ 1 ; Linux kernel image |
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| 106 | VK_BOOT equ 2 ; Boot sector |
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| 107 | VK_BSS equ 3 ; BSS boot sector |
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| 108 | VK_PXE equ 4 ; PXE NBP |
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| 109 | VK_FDIMAGE equ 5 ; Floppy disk image |
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| 110 | VK_COMBOOT equ 6 ; COMBOOT image |
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| 111 | VK_COM32 equ 7 ; COM32 image |
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| 112 | VK_CONFIG equ 8 ; Configuration file |
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| 113 | VK_TYPES equ 9 ; Number of VK types |
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| 114 | |
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| 115 | %endif ; _KERNEL_INC |
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