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Revision 1.26, Thu Jun 30 20:09:15 2011 UTC (3 years, 1 month ago) by wiz
Branch: MAIN
CVS Tags: yamt-pagecache-tag8, yamt-pagecache-base9, yamt-pagecache-base8, yamt-pagecache-base7, yamt-pagecache-base6, yamt-pagecache-base5, yamt-pagecache-base4, yamt-pagecache-base3, yamt-pagecache-base2, yamt-pagecache-base, yamt-pagecache, riastradh-xf86-video-intel-2-7-1-pre-2-21-15, riastradh-drm2-base3, riastradh-drm2-base2, riastradh-drm2-base1, riastradh-drm2-base, riastradh-drm2, netbsd-6-base, netbsd-6-1-RELEASE, netbsd-6-1-RC4, netbsd-6-1-RC3, netbsd-6-1-RC2, netbsd-6-1-RC1, netbsd-6-1-4-RELEASE, netbsd-6-1-3-RELEASE, netbsd-6-1-2-RELEASE, netbsd-6-1-1-RELEASE, netbsd-6-1, netbsd-6-0-RELEASE, netbsd-6-0-RC2, netbsd-6-0-RC1, netbsd-6-0-5-RELEASE, netbsd-6-0-4-RELEASE, netbsd-6-0-3-RELEASE, netbsd-6-0-2-RELEASE, netbsd-6-0-1-RELEASE, netbsd-6-0, netbsd-6, matt-nb6-plus-nbase, matt-nb6-plus-base, matt-nb6-plus, khorben-n900, agc-symver-base, agc-symver
Branch point for: tls-maxphys, tls-earlyentropy
Changes since 1.25: +2 -2 lines

dependant -> dependent

/*	$NetBSD: mbr.h,v 1.26 2011/06/30 20:09:15 wiz Exp $	*/

/*
 * Copyright 1997, 1988 Piermont Information Systems Inc.
 * All rights reserved.
 *
 * Written by Philip A. Nelson for Piermont Information Systems Inc.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. The name of Piermont Information Systems Inc. may not be used to endorse
 *    or promote products derived from this software without specific prior
 *    written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY PIERMONT INFORMATION SYSTEMS INC. ``AS IS''
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL PIERMONT INFORMATION SYSTEMS INC. BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 *
 */

#ifndef _MBR_H
#define _MBR_H

/*
 * mbr.h -- definitions for reading, writing and editing DOS MBRs.
 * Use by including from md.h on ports  which use MBRs (i386, powerpc, arc)
 * naming convention:  dlxxxx => NetBSD disklabel, bxxxx => bios
 */

/* constants and defines */

#include <sys/bootblock.h>

/*
 * XXX  I (dsl) haven't the foggiest idea what the MBR extended chain
 *	looks like if the sector size isn't 512.
 */
#define MBR_SECSIZE     512

#define MBR_PUT_LSCYL(c)		((c) & 0xff)
#define MBR_PUT_MSCYLANDSEC(c,s)	(((s) & 0x3f) | (((c) >> 2) & 0xc0))

typedef struct mbr_info_t mbr_info_t;
struct mbr_info_t {
	struct mbr_sector	mbr;
#ifdef BOOTSEL
	struct mbr_bootsel	mbrb;	/* writeable for any mbr code */
	uint		oflags;
#endif
	uint		sector;		/* where we read this from */
	mbr_info_t	*extended;	/* next in extended partition list */
	mbr_info_t	*prev_ext;	/* and back ptr */
	const char	*last_mounted[MBR_PART_COUNT];
	/* only in first item... */
	int		opt;		/* entry being edited */
	uint		install;	/* start sector of install partition */
#ifdef BOOTSEL
	uint		bootsec;	/* start sector of bootmenu default */
#endif
};

/* incore fdisk (mbr, bios) geometry */
int bcyl, bhead, bsec;

mbr_info_t mbr;

#ifdef BOOTSEL
struct mbr_bootsel *mbs;

	/* sync with src/sbin/fdisk/fdisk.c */
#define	DEFAULT_BOOTDIR		"/usr/mdec"
#define	DEFAULT_BOOTCODE	"mbr"
#define	DEFAULT_BOOTSELCODE	"mbr_bootsel"
#define	DEFAULT_BOOTEXTCODE	"mbr_ext"

/* Scan values for the various keys we use, as returned by the BIOS */
#define	SCAN_ENTER	0x1c
#define	SCAN_F1		0x3b
#define	SCAN_1		0x2

#endif /* BOOTSEL */

/* from mbr.c */
void	set_fdisk_geom(void);	/* edit incore BIOS geometry */
void	disp_cur_geom(void);
int	check_geom(void);		/* primitive geometry sanity-check */

void	disp_cur_part(struct mbr_partition *, int, int);
int	edit_mbr(mbr_info_t *);
int	mbr_use_wholedisk(mbr_info_t *);
int 	partsoverlap(struct mbr_partition *, int, int);

/* from mbr.c */

int     read_mbr(const char *, mbr_info_t *);
int     write_mbr(const char *, mbr_info_t *, int);
int     valid_mbr(struct mbr_sector *);
int	guess_biosgeom_from_mbr(mbr_info_t *, int *, int *, daddr_t *);
int	set_bios_geom_with_mbr_guess(void);
void	set_bios_geom(int, int, int);
int	otherpart(int);
int	ourpart(int);
const char	*get_partname(int);
void	edit_ptn_bounds(void);
#ifdef BOOTSEL
void	disp_bootsel(void);
void	edit_bootsel_entry(int);
void	edit_bootsel_timeout(void);
void	edit_bootsel_default_ptn(int);
void	edit_bootsel_default_disk(int);
void	configure_bootsel(void);
#endif

/* Machine dependent mbr functions */
int	md_mbr_use_wholedisk(mbr_info_t *mbri);
int	md_check_mbr(mbr_info_t *mbri);

#endif