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/* $OpenBSD: disklabel.h,v 1.3 2004/05/19 03:17:07 drahn Exp $ */
/* $OpenBSD: disklabel.h,v 1.3 2004/05/19 03:17:07 drahn Exp $ */
/* $NetBSD: disklabel.h,v 1.2 2001/11/25 19:02:03 thorpej Exp $ */
/*
* Copyright (c) 1994 Mark Brinicombe.
* Copyright (c) 1994 Brini.
* All rights reserved.
*
* This code is derived from software written for Brini by Mark Brinicombe
*
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Brini.
* 4. The name of the company nor the name of the author may be used to
* endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY BRINI ``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 BRINI OR CONTRIBUTORS 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.
*
* RiscBSD kernel project
*
* disklabel.h
*
* machine specific disk label info
*
* Created : 04/10/94
*/
#ifndef _ARM_DISKLABEL_H_
#define _ARM_DISKLABEL_H_
#define LABELSECTOR 1 /* sector containing label */
#define LABELOFFSET 0 /* offset of label in sector */
#define MAXPARTITIONS 16 /* number of partitions */
#define RAW_PART 2 /* raw partition: XX?c */
#include <sys/dkbad.h>
#if 0
#include <arm/disklabel_acorn.h>
#include <sys/disklabel_mbr.h>
#endif
/* MBR partition table */
#define DOSBBSECTOR 0 /* MBR sector number */
#define DOSPARTOFF 446 /* Offset of MBR partition table */
#define NDOSPART 4 /* # of partitions in MBR */
#define DOSMAGICOFF 510 /* Offset of magic number */
#define DOSMAGIC 0xaa55 /* Actual magic number */
#define MBRMAGIC DOSMAGIC
#define DOSMBR_SIGNATURE MBRMAGIC
#define DOSMBR_SIGNATURE_OFF DOSMAGICOFF
#define DOSACTIVE 0x80
struct dos_partition {
u_int8_t dp_flag; /* bootstrap flags */
u_int8_t dp_shd; /* starting head */
u_int8_t dp_ssect; /* starting sector */
u_int8_t dp_scyl; /* starting cylinder */
u_int8_t dp_typ; /* partition type (see below) */
u_int8_t dp_ehd; /* end head */
u_int8_t dp_esect; /* end sector */
u_int8_t dp_ecyl; /* end cylinder */
u_int32_t dp_start; /* absolute starting sector number */
u_int32_t dp_size; /* partition size in sectors */
};
/* Known DOS partition types. */
#define DOSPTYP_UNUSED 0x00 /* Unused partition */
#define DOSPTYP_FAT12 0x01 /* 12-bit FAT */
#define DOSPTYP_FAT16S 0x04 /* 16-bit FAT, less than 32M */
#define DOSPTYP_EXTEND 0x05 /* Extended; contains sub-partitions */
#define DOSPTYP_FAT16B 0x06 /* 16-bit FAT, more than 32M */
#define DOSPTYP_FAT32 0x0b /* 32-bit FAT */
#define DOSPTYP_FAT32L 0x0c /* 32-bit FAT, LBA-mapped */
#define DOSPTYP_FAT16C 0x0e /* 16-bit FAT, CHS-mapped */
#define DOSPTYP_EXTENDL 0x0f /* Extended, LBA-mapped; contains sub-partitions */
#define DOSPTYP_ONTRACK 0x54
#define DOSPTYP_LINUX 0x83 /* That other thing */
#define DOSPTYP_FREEBSD 0xa5 /* FreeBSD partition type */
#define DOSPTYP_OPENBSD 0xa6 /* OpenBSD partition type */
#define DOSPTYP_NETBSD 0xa9 /* NetBSD partition type */
/* Isolate the relevant bits to get sector and cylinder. */
#define DPSECT(s) ((s) & 0x3f)
#define DPCYL(c, s) ((c) + (((s) & 0xc0) << 2))
#ifdef __ARMEL__
#define get_le(x) (*((u_int32_t *)x))
#else
static __inline u_int32_t get_le(void *p);
static __inline u_int32_t
#ifdef __cplusplus
get_le(void *p)
#else
get_le(p)
void *p;
#endif
{
u_int8_t *_p = (u_int8_t *)p;
int x;
x = _p[0];
x |= _p[1] << 8;
x |= _p[2] << 16;
x |= _p[3] << 24;
return x;
}
#endif
#define NMBRPART 4
struct cpu_disklabel {
struct dos_partition dosparts[NMBRPART];
struct dkbad bad;
};
#ifdef _KERNEL
struct buf;
struct disklabel;
/* for readdisklabel. rv != 0 -> matches, msg == NULL -> success */
int mbr_label_read (dev_t, void (*)(struct buf *), struct disklabel *,
struct cpu_disklabel *, char **, int *, int *);
/* for writedisklabel. rv == 0 -> dosen't match, rv > 0 -> success */
int mbr_label_locate (dev_t, void (*)(struct buf *),
struct disklabel *, struct cpu_disklabel *, int *, int *);
#endif /* _KERNEL */
#endif /* _ARM_DISKLABEL_H_ */
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