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/* lilo.h - LILO constants */
/* Copyright 1992-1998 Werner Almesberger. See file COPYING for details. */
/* This file is also included by the boot loader assembler code. Put
everything that isn't legal C syntax or isn't swallowed by the
preprocessor into #ifdef LILO_ASM ... #endif */
#ifndef LILO_H
#define LILO_H
/*
* Starting with 2.1.something, Linux kernels put VGA constants and segment
* definitions into asm/boot.h instead of linux/config.h
*/
#ifdef HAS_BOOT_H
#include <asm/boot.h>
#else
#include <linux/config.h>
#endif
#define VERSION 20 /* Boot sector, map file, and chain loader format
revision. This number does not necessarily have
to correspond to the version number of the entire
package, but it usually does. */
#define MAJMIN_RAM 0x101 /* RAM disk */
#define MAJOR_FD 2 /* floppy disks */
#define MAJOR_HD 3 /* IDE-type hard disks */
#define MAJOR_SD 8 /* SCSI disks */
#define MAJOR_XT 13 /* XT-type hard disks */
#define MAJOR_IDE2 22 /* IDE on second interface */
#define MAJOR_IDE3 33 /* IDE on third interface */
#define MAJOR_IDE4 34 /* IDE on fourth interface */
#define MAJOR_ESDI 36 /* PS/2 ESDI drives */
#define MAJOR_DAC960 48 /* First Mylex DAC960 PCI RAID controller */
#define MAJOR_IDE5 55 /* IDE on fifth interface */
#define MAJOR_IDE6 57 /* IDE on sixth interface */
#define MAX_IMAGES ((SECTOR_SIZE*2-2)/sizeof(IMAGE_DESCR))
/* maximum number of images */
#define MAX_IMAGE_NAME 15 /* maximum name length (w/o terminating NUL) */
#define MAX_PW 15 /* maximum password length */
#define MAX_SECONDARY 9 /* maximum number of sectors in the 2nd stage
loader */
#define SECTOR_SIZE 512 /* disk sector size */
#ifndef BLOCK_SIZE /* may also come from linux/fs.h */
#define BLOCK_SIZE 1024 /* disk block size */
#endif
#define ADDR_OFFS MAX_IMAGE_NAME+MAX_PW+2 /* options address offset */
#define PARTITION_ENTRY 16 /* size of one partition entry */
#define PARTITION_ENTRIES 4 /* number of partition entries */
#define PART_TABLE_SIZE (PARTITION_ENTRY*PARTITION_ENTRIES)
#define PART_TABLE_OFFSET 0x1be /* offset in the master boot sector */
#define PART_ACT_ENT_OFF 0 /* offset in entry for active flag */
#define PART_TYPE_ENT_OFF 4 /* offset in entry for partition type */
#define PART_MASK 15 /* largest common partition bits mask */
#define PART_MAX 4 /* biggest primary partition number */
#define PART_LINUX_MINIX 0x81 /* Linux/MINIX partition */
#define PART_LINUX_NATIVE 0x83 /* Linux native (file system) */
#define MAX_BOOT_SIZE 0x1b6 /* (leave some space for NT's and DR DOS' dirty
hacks) scream if the boot sector gets any
bigger */
#define INIT_CKS 0xabcd /* initial descriptor table checksum */
#define BOOT_SIGNATURE 0xaa55 /* boot signature */
#define BOOT_SIG_OFFSET 510 /* boot signature offset */
#define PART_DOS12 1 /* DOS 12 bit FAT partition type */
#define PART_DOS16_SMALL 4 /* DOS 16 bit FAT partition type, < 32 MB */
#define PART_DOS16_BIG 6 /* DOS 16 bit FAT partition type, >= 32 MB */
#define PART_INVALID 98 /* invalid partition type */
#define HIDDEN_OFF 0x10 /* type offset to hide partition (OS/2 BM) */
#define PART_HDOS12 PART_DOS12+HIDDEN_OFF
#define PART_HDOS16_SMALL PART_DOS16_SMALL+HIDDEN_OFF
#define PART_HDOS16_BIG PART_DOS16_BIG+HIDDEN_OFF
#define STAGE_FIRST 1 /* first stage loader code */
#define STAGE_SECOND 2 /* second stage loader code */
#define STAGE_CHAIN 0x10 /* chain loader code */
#define SETUPSECS 4 /* nr of setup sectors */
#define VSS_NUM 497 /* address where variable setup size is
stored */
#ifndef LCF_LARGE_EBDA
#define MAX_KERNEL_SECS 1024 /* absolute maximum kernel size */
#else
#define MAX_KERNEL_SECS 896 /* absolute maximum kernel size */
#endif
#define SPECIAL_SECTORS 2 /* special sectors (don't compact) at beginning
of map sections */
#define LINEAR_FLAG 0x40 /* mark linear address */
#define EX_OFF CODE_START_1+SSDIFF /* external parameter block */
#define EX_DL_MAG 0xfe /* magic number in DL */
#define EX_MAG_L 0x494c /* magic number at ES:SI, "LI" */
#define EX_MAG_H 0x4f4c /* magic number at ES:SI+2, "LO" */
#define BIOS_MAX_DEVS 2 /* BIOS devices (2 fd, 2 hd) */
#define BIOS_MAX_HEADS 256 /* 8 bits head number */
#define BIOS_MAX_CYLS 1024 /* 10 bits cylinder number */
#define BIOS_MAX_SECS 63 /* 6 bits sector number (no, it's not 64) */
#define FLAG_VGA 1 /* override VGA mode */
#define FLAG_RESTR 2 /* restrict additional parameters */
#define FLAG_LOCK 4 /* lock on target */
#define FLAG_MODKRN 8 /* modern kernel with high memory support */
#define FLAG_KERNEL 16 /* image is a kernel */
#define FLAG_SINGLE 32 /* single key activation */
#define VGA_NOCOVR 0x8000 /* VGA setting not overridden on command line */
#define SER_DFL_PRM 0xa3 /* default serial parameters: 2400n8 */
#define DC_MAGIC 0xf4f2 /* magic number of default cmd. line sector */
#define DC_MGOFF 0x6b6d /* magic number for disabled line */
#define MAX_MESSAGE 65535 /* maximum message length */
#define NEW_HDR_SIG "HdrS" /* setup header signature */
#define NEW_HDR_VERSION 0x200 /* header version number */
#define LOADER_VERSION 1 /* loader version, for SETUP_HDR.loader */
#define LFLAG_HIGH 1 /* SETUP_HDR.flags */
#define LFLAG_USE_HEAP 0x80
#define PRTMAP_SIZE 32 /* number of partition type mappings */
#define DRVMAP_SIZE 8 /* number of drive mappings */
#ifdef LILO_ASM
BOOTSEG = 0x07C0 ! original address of boot-sector
PARTS_LOAD= 0x0600 ! partition sector load address
PARTS_SCR = 0x0800 ! ditto, for non-boot partitions
PART_TABLE= 0x07BE ! partition table
#ifndef LCF_LARGE_EBDA
FIRSTSEG = 0x9A00
STACKSEG = 0x9000
SECONDSEG = 0x9B00 ! second stage loader segment
#else
FIRSTSEG = 0x8A00
STACKSEG = 0x8000
SECONDSEG = 0x8B00 ! second stage loader segment
#endif
INITSEG = DEF_INITSEG ! we move boot here - out of the way
SETUPSEG = DEF_SETUPSEG ! setup starts here
SYSSEG = DEF_SYSSEG ! system loaded at 0x10000 (65536).
SSDIFF = 0xA000
STACK = 0xB000 ! top of stack
DESCR = 0x2200 ! descriptor load area offset
DFLCMD = 0x2600 ! default command line
MAP = 0x2000 ! map load area offset
KEYTABLE = 0x2800 ! keyboard translation table offset
PARMLINE = 0x2a00 ! parameter line construction area off.
SECOND = 0x1000 ! second stage loader load address
SECOND_SS = 0xB000 ! second as seen from SS:0000
SLA_SIZE = 0x9E00 ! setup load area size
KBBEG = 0x41A ! beginning of keyboard buffer
KBEND = 0x41C ! end of keyboard buffer
KBLOW = 0x1e
KBHIGH = 0x3e
! 0x007BE-0x007FD 64 B partition table
! 0x07C00-0x07DFF 0.5 kB boot load address
! 0x10000-0x8FFFF 512 kB kernel
! 0x90000-0x901FF 0.5 kB Linux floppy boot sector
! 0x90200-0x99FFF 39.5 kB setup
! 0x9A000-0x9A1FF 0.5 kB boot sector (first stage loader)
! 0x9A200-0x9AFFF 3.5 kB stack
! 0x9B000-0x9CFFF 8 kB second stage loader
! 0x9D000-0x9D1FF 0.5 kB file map load area
! 0x9D200-0x9D5FF 1 kB descriptor table load area
! 0x9D600-0x9D7FF 0.5 kB default command line load area
! 0x9D800-0x9D9FF 0.5 kB keyboard translation table load area
! 0x9DA00-0x9DDFF 1 kB parameter line construction area
! 0x9DE00-0x9F9FF 7.5 kB scratch space
! 0x9FC00-0x9FFFF 1 kB driver swapper
CL_MAGIC_ADDR = 0x20 ! command line magic number
CL_MAGIC = 0xa33f ! very unusual command sequence
CL_OFFSET = 0x22 ! command line offset
CL_LENGTH = 0x4e ! maximum length
! 0x90020-0x90021 2 by command line magic number
! 0x90022-0x90023 2 by command line offset
#endif
#endif
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