/* $OpenBSD: disklabel.h,v 1.8 2003/06/03 21:09:01 deraadt 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 _MVME68K_DISKLABEL_H_ #define _MVME68K_DISKLABEL_H_ #define LABELSECTOR 0 /* 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 */ /* * a cpu_disklabel 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 cpu_disklabel (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 cpu_disklabel) * block 1 = media configuration area (part of cpu_disklabel) * 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 cpu_disklabel 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 cpu_disklabel { /* 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 /* _MVME68K_DISKLABEL_H_ */