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/* $OpenBSD: disklabel.h,v 1.12 2011/03/23 16:54:36 pirofti Exp $ */
/*
* Copyright (c) 1996 Nivas Madhur
* Copyright (c) 1995 Dale Rahn.
* 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. 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_
#define LABELSECTOR 0 /* sector containing label */
#define LABELOFFSET 0 /* offset of label in sector */
#define MAXPARTITIONS 16 /* number of partitions */
/*
* a mvmedisklabel is a disklabel that the bug (prom) can understand
* and live with. the bug works in terms of 256 byte blocks. in our
* case the first two bug blocks make up the mvmedisklabel (which is 512
* bytes [i.e. one sector] in length).
*
* we use a fixed layout the BSD disk structure (in 256 byte blocks):
* block 0 = the volume ID block (part of mvmedisklabel)
* block 1 = media configuration area (part of mvmedisklabel)
* block 2 = start of first level OS bootstrap (continues ...)
* block 31 = end of OS bootstrap
* block 32 = BSD filesystem superblock
*
* this gives us 30 blocks (30*256 = 7680 bytes) for the bootstrap's text+data
*
* disksubr.c translates between mvmedisklabel and BSD disklabel.
*
* Note: this structure is exactly 512 bytes in size. If you move fields
* around, make sure the various members are properly aligned and the
* compiler won't do any additional padding.
*/
struct mvmedisklabel {
/* VID */
u_char vid_id[4];
u_char vid_0[16];
u_int vid_oss;
u_short vid_osl;
u_char vid_1[4];
u_short vid_osa_u;
u_short vid_osa_l;
u_char version;
u_char vid_2[1];
u_short checksum; /* 2 */
u_short partitions;
u_char vid_vd[16];
u_long bbsize;
u_long magic1; /* 4 */
u_short type; /* 2 */
u_short subtype; /* 2 */
u_char packname[16]; /* 16 */
u_long flags; /* 4 */
u_long drivedata[5]; /* 4 */
u_long spare[5]; /* 4 */
u_long secpercyl; /* 4 */
u_long secperunit; /* 4 */
u_long headswitch; /* 4 */
u_char vid_3[4];
u_int vid_cas;
u_char vid_cal;
u_char vid_4_0[3];
u_char vid_4[64];
u_char vid_4_1[28];
u_long sbsize;
u_char vid_mot[8];
/* CFG */
u_char cfg_0[4];
u_short cfg_atm;
u_short cfg_prm;
u_short cfg_atw;
u_short cfg_rec;
u_short sparespertrack;
u_short sparespercyl;
u_long acylinders;
u_short rpm;
u_short cylskew;
u_char cfg_spt;
u_char cfg_hds;
u_short cfg_trk;
u_char cfg_ilv;
u_char cfg_sof;
u_short cfg_psm;
u_short cfg_shd;
u_char cfg_2[2];
u_short cfg_pcom;
u_char cfg_3;
u_char cfg_ssr;
u_short cfg_rwcc;
u_short cfg_ecc;
u_short cfg_eatm;
u_short cfg_eprm;
u_short cfg_eatw;
u_char cfg_gpb1;
u_char cfg_gpb2;
u_char cfg_gpb3;
u_char cfg_gpb4;
u_char cfg_ssc;
u_char cfg_runit;
u_short cfg_rsvc1;
u_short cfg_rsvc2;
u_long magic2;
u_char cfg_4[192];
};
#endif /* _MACHINE_DISKLABEL_H_ */
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