blob: 1adc7123d92e4ab3323fbf2a1f195a12850f12c7 [file] [log] [blame]
#ifndef __COMMON_H
#define __COMMON_H
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) Hewlett-Packard (Paul Bame) paul_bame@hp.com
*/
#include <stdarg.h>
#include <asm/byteorder.h>
#include <linux/genhd.h>
#define PALOVERSION "1.3"
/* size of I/O block used in HP firmware */
#define FW_BLOCKSIZE 2048
/* assume kernel will always be loaded into the "lower" physical memory */
#define PHYS(virtual) ((virtual) & 0x00ffffff)
/* This struct is placed at the start of the boot loader executable. The
* "magic" number is the assembly-language branch needed to skip over the
* rest of the structure. This structure is manipulated by the program
* which creates and updates boot media (palo). It must stay 256 bytes
* in length!
*
* kern_sz = 0 or rd_sz = 0 means no kern or ramdisk respectively.
*/
#define PALOMAGIC "PALO"
#define PALOHDRVERSION 4
#define PFLAG_INSTALL 0x1
#define PFLAG_EXT2 0x2
struct firstblock
{
unsigned char lifmagic0; /* 0x80 */
unsigned char lifmagic1; /* 0x00 */
char palomagic[5]; /* PALO */
unsigned char version;
int kern32_offset; /* seek() here to begin loading kernel */
int kern32_sz; /* # bytes to load */
int rd_offset; /* seek() here to begin loading ramdisk */
int rd_sz; /* # bytes in ramdisk */
char cmdline[128]; /* Up to 127 bytes of text plus a \0 */
unsigned char pad1[0xf0 - 8 - 7 * sizeof (int) - 128];
unsigned int flags;
int kern64_offset;
int kern64_sz;
int ipl_addr; /* offset 0xf0 */
int ipl_size;
int ipl_entry;
/* offset 0x1be */
unsigned char pad2[0x1be - (0xf0 + 3 * sizeof (int))];
struct partition part[4];
/* offset 0x1fe */
unsigned char dosmagic[2]; /* 0x55, 0xaa */
unsigned char pad4[2048 - 0x200];
};
/* we use this so that we can do without the ctype library */
#define is_digit(c) ((c) >= '0' && (c) <= '9')
struct diskpartition
{
/* in honor of the MBR scheme, these are in 512-byte sectors */
unsigned start;
/* length == 0 means nothing's here */
unsigned length;
unsigned char id;
};
#define MAXPARTS 16
int seekread(int fd, char *buf, unsigned nbytes, unsigned devaddr);
#define STRUCTWRITE(f, data, where) seekwrite((f), (char *)&data, sizeof data, (where))
#define STRUCTREAD(f, data, where) seekread((f), (char *)&data, sizeof data, (where))
/* diskpart.c */
extern int is_extended(int id);
extern int load_partitions(int bootdev, struct diskpartition *mptab, int maxparts);
extern void print_ptab(struct diskpartition *mptab, int maxparts);
extern void print_ptab_pretty(struct diskpartition *mptab, int maxparts);
/* $Id: common.h,v 1.11 2001/06/13 05:08:55 bame Exp $ */
#endif /* __COMMON_H */