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/* $OpenBSD: disklabel.h,v 1.13 2006/06/11 21:15:35 krw Exp $ */
/* $NetBSD: disklabel.h,v 1.1 1995/02/13 23:07:34 cgd Exp $ */
/*
* Copyright (c) 1994 Christopher G. Demetriou
* All rights reserved.
*
* 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 Christopher G. Demetriou.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 THE AUTHOR 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 _MACHINE_DISKLABEL_H_
#define _MACHINE_DISKLABEL_H_
enum disklabel_tag { DLT_ALPHA, DLT_I386 };
/*
* What disklabels are we probing for, and in which order?
*/
#ifndef LABELPROBES
#define LABELPROBES DLT_ALPHA, DLT_I386
#endif
#define ALPHA_LABELSECTOR 0 /* sector containing label */
#define ALPHA_LABELOFFSET 64 /* offset of label in sector */
#define I386_LABELSECTOR 1 /* sector containing label */
#define I386_LABELOFFSET 0 /* offset of label in sector */
#define LABELSECTOR ALPHA_LABELSECTOR
#define LABELOFFSET ALPHA_LABELOFFSET
#define MAXPARTITIONS 16 /* number of partitions */
#define RAW_PART 2 /* raw partition: xx?c */
/* DOS partition table -- located in boot block */
#define DOSBBSECTOR 0 /* DOS boot block relative sector # */
#define DOSPARTOFF 446
#define DOSACTIVE 0x80
#define NDOSPART 4
#define DOSMBR_SIGNATURE 0xaa55
#define DOSMBR_SIGNATURE_OFF 0x1fe
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_FAT16L 0x0e /* 16-bit FAT, LBA-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))
/*
* describes ados Rigid Disk Blocks
* which are used to partition a drive
*/
#define RDBNULL ((u_int32_t)0xffffffff)
/*
* you will find rdblock somewhere in [0, RDBMAXBLOCKS)
*/
#define RDB_MAXBLOCKS 16
struct rdblock {
u_int32_t id; /* 'RDSK' */
u_int32_t nsumlong; /* number of longs in check sum */
u_int32_t chksum; /* simple additive with wrap checksum */
u_int32_t hostid; /* scsi target of host */
u_int32_t nbytes; /* size of disk blocks */
u_int32_t flags;
u_int32_t badbhead; /* linked list of badblocks */
u_int32_t partbhead; /* linked list of partblocks */
u_int32_t fsbhead; /* " " of fsblocks */
u_int32_t driveinit;
u_int32_t resv1[6]; /* RDBNULL */
u_int32_t ncylinders; /* number of cylinders on drive */
u_int32_t nsectors; /* number of sectors per track */
u_int32_t nheads; /* number of tracks per cylinder */
u_int32_t interleave;
u_int32_t park; /* only used with st506 i.e. not */
u_int32_t resv2[3];
u_int32_t wprecomp; /* start cyl for write precomp */
u_int32_t reducedwrite; /* start cyl for reduced write current */
u_int32_t steprate; /* driver step rate in ?s */
u_int32_t resv3[5];
u_int32_t rdblowb; /* lowblock of range for rdb's */
u_int32_t rdbhighb; /* high block of range for rdb's */
u_int32_t lowcyl; /* low cylinder of partition area */
u_int32_t highcyl; /* upper cylinder of partition area */
u_int32_t secpercyl; /* number of sectors per cylinder */
u_int32_t parkseconds; /* zero if no park needed */
u_int32_t resv4[2];
char diskvendor[8]; /* inquiry stuff */
char diskproduct[16]; /* inquiry stuff */
char diskrevision[4]; /* inquiry stuff */
char contvendor[8]; /* inquiry stuff */
char contproduct[16]; /* inquiry stuff */
char contrevision[4]; /* inquiry stuff */
#if never_use_secsize
u_int32_t resv5[0];
#endif
};
#define RDBF_LAST 0x1 /* last drive available */
#define RDBF_LASTLUN 0x2 /* last LUN available */
#define RDBF_LASTUNIT 0x4 /* last target available */
#define RDBF_NORESELECT 0x8 /* do not use reselect */
#define RDBF_DISKID 0x10 /* disk id is valid ?? */
#define RDBF_CTRLID 0x20 /* ctrl id is valid ?? */
#define RDBF_SYNC 0x40 /* drive supports SCSI synchronous mode */
struct ados_environ {
u_int32_t tabsize; /* 0: environ table size */
u_int32_t sizeblock; /* 1: n long words in a block */
u_int32_t secorg; /* 2: not used must be zero */
u_int32_t numheads; /* 3: number of surfaces */
u_int32_t secperblk; /* 4: must be 1 */
u_int32_t secpertrk; /* 5: blocks per track */
u_int32_t resvblocks; /* 6: reserved blocks at start */
u_int32_t prefac; /* 7: must be 0 */
u_int32_t interleave; /* 8: normally 1 */
u_int32_t lowcyl; /* 9: low cylinder of partition */
u_int32_t highcyl; /* 10: upper cylinder of partition */
u_int32_t numbufs; /* 11: ados: number of buffers */
u_int32_t membuftype; /* 12: ados: type of bufmem */
u_int32_t maxtrans; /* 13: maxtrans the ctrlr supports */
u_int32_t mask; /* 14: mask for valid address */
u_int32_t bootpri; /* 15: boot priority for autoboot */
u_int32_t dostype; /* 16: filesystem type */
u_int32_t baud; /* 17: serial handler baud rate */
u_int32_t control; /* 18: control word for fs */
u_int32_t bootblocks; /* 19: blocks containing boot code */
u_int32_t fsize; /* 20: file system block size */
u_int32_t frag; /* 21: allowable frags per block */
u_int32_t cpg; /* 22: cylinders per group */
};
struct partblock {
u_int32_t id; /* 'PART' */
u_int32_t nsumlong; /* number of longs in check sum */
u_int32_t chksum; /* simple additive with wrap checksum */
u_int32_t hostid; /* scsi target of host */
u_int32_t next; /* next in chain */
u_int32_t flags; /* see below */
u_int32_t resv1[3];
u_char partname[32]; /* (BCPL) part name (may not be unique) */
u_int32_t resv2[15];
struct ados_environ e;
#if never_use_secsize
u_int32_t extra[9]; /* 8 for extra added to environ */
#endif
};
#define PBF_BOOTABLE 0x1 /* partition is bootable */
#define PBF_NOMOUNT 0x2 /* partition should be mounted */
struct badblock {
u_int32_t id; /* 'BADB' */
u_int32_t nsumlong; /* number of longs in check sum */
u_int32_t chksum; /* simple additive with wrap checksum */
u_int32_t hostid; /* scsi target of host */
u_int32_t next; /* next in chain */
u_int32_t resv;
struct badblockent {
u_int32_t badblock;
u_int32_t goodblock;
} badtab[0]; /* 61 for secsize == 512 */
};
struct fsblock {
u_int32_t id; /* 'FSHD' */
u_int32_t nsumlong; /* number of longs in check sum */
u_int32_t chksum; /* simple additive with wrap checksum */
u_int32_t hostid; /* scsi target of host */
u_int32_t next; /* next in chain */
u_int32_t flags;
u_int32_t resv1[2];
u_int32_t dostype; /* this is a file system for this type */
u_int32_t version; /* version of this fs */
u_int32_t patchflags; /* describes which functions to replace */
u_int32_t type; /* zero */
u_int32_t task; /* zero */
u_int32_t lock; /* zero */
u_int32_t handler; /* zero */
u_int32_t stacksize; /* to use when loading handler */
u_int32_t priority; /* to run the fs at. */
u_int32_t startup; /* zero */
u_int32_t lsegblocks; /* linked list of lsegblocks of fs code */
u_int32_t globalvec; /* bcpl vector not used mostly */
#if never_use_secsize
u_int32_t resv2[44];
#endif
};
struct lsegblock {
u_int32_t id; /* 'LSEG' */
u_int32_t nsumlong; /* number of longs in check sum */
u_int32_t chksum; /* simple additive with wrap checksum */
u_int32_t hostid; /* scsi target of host */
u_int32_t next; /* next in chain */
u_int32_t loaddata[0]; /* load segment data, 123 for secsize == 512 */
};
#define RDBLOCK_ID 0x5244534b /* 'RDSK' */
#define PARTBLOCK_ID 0x50415254 /* 'PART' */
#define BADBLOCK_ID 0x42414442 /* 'BADB' */
#define FSBLOCK_ID 0x46534844 /* 'FSHD' */
#define LSEGBLOCK_ID 0x4c534547 /* 'LSEG' */
#include <sys/dkbad.h>
struct cpu_disklabel {
enum disklabel_tag labeltag;
int labelsector;
union {
struct {
} _alpha;
struct {
struct dos_partition dosparts[NDOSPART];
struct dkbad bad;
} _i386;
} u;
};
#define DKBAD(x) ((x)->u._i386.bad)
#endif /* _MACHINE_DISKLABEL_H_ */
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