Annotation of sys/arch/mvme68k/include/disklabel.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: disklabel.h,v 1.11 2007/06/20 18:15:45 deraadt Exp $ */
! 2:
! 3: /*
! 4: * Copyright (c) 1996 Nivas Madhur
! 5: * Copyright (c) 1995 Dale Rahn.
! 6: * All rights reserved.
! 7: *
! 8: * Redistribution and use in source and binary forms, with or without
! 9: * modification, are permitted provided that the following conditions
! 10: * are met:
! 11: * 1. Redistributions of source code must retain the above copyright
! 12: * notice, this list of conditions and the following disclaimer.
! 13: * 2. Redistributions in binary form must reproduce the above copyright
! 14: * notice, this list of conditions and the following disclaimer in the
! 15: * documentation and/or other materials provided with the distribution.
! 16: * 3. The name of the author may not be used to endorse or promote products
! 17: * derived from this software without specific prior written permission.
! 18: *
! 19: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
! 20: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
! 21: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
! 22: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
! 23: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
! 24: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
! 25: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
! 26: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
! 27: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
! 28: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
! 29: */
! 30:
! 31: #ifndef _MVME68K_DISKLABEL_H_
! 32: #define _MVME68K_DISKLABEL_H_
! 33:
! 34: #define LABELSECTOR 0 /* sector containing label */
! 35: #define LABELOFFSET 0 /* offset of label in sector */
! 36: #define MAXPARTITIONS 16 /* number of partitions */
! 37:
! 38: /*
! 39: * a mvmedisklabel is a disklabel that the bug (prom) can understand
! 40: * and live with. the bug works in terms of 256 byte blocks. in our
! 41: * case the first two bug blocks make up the mvmedisklabel (which is 512
! 42: * bytes [i.e. one sector] in length).
! 43: *
! 44: * we use a fixed layout the BSD disk structure (in 256 byte blocks):
! 45: * block 0 = the volume ID block (part of mvmedisklabel)
! 46: * block 1 = media configuration area (part of mvmedisklabel)
! 47: * block 2 = start of first level OS bootstrap (continues ...)
! 48: * block 31 = end of OS bootstrap
! 49: * block 32 = BSD filesystem superblock
! 50: *
! 51: * this gives us 30 blocks (30*256 = 7680 bytes) for the bootstrap's text+data
! 52: *
! 53: * disksubr.c translates between mvmedisklabel and BSD disklabel.
! 54: *
! 55: * Note: this structure is exactly 512 bytes in size. If you move fields
! 56: * around, make sure the various members are properly aligned and the
! 57: * compiler won't do any additional padding.
! 58: */
! 59: struct mvmedisklabel {
! 60: /* VID */
! 61: u_char vid_id[4];
! 62: u_char vid_0[16];
! 63: u_int vid_oss;
! 64: u_short vid_osl;
! 65: u_char vid_1[4];
! 66: u_short vid_osa_u;
! 67: u_short vid_osa_l;
! 68: u_char version;
! 69: u_char vid_2[1];
! 70: u_short checksum; /* 2 */
! 71: u_short partitions;
! 72: u_char vid_vd[16];
! 73: u_long bbsize;
! 74: u_long magic1; /* 4 */
! 75: u_short type; /* 2 */
! 76: u_short subtype; /* 2 */
! 77: u_char packname[16]; /* 16 */
! 78: u_long flags; /* 4 */
! 79: u_long drivedata[5]; /* 4 */
! 80: u_long spare[5]; /* 4 */
! 81:
! 82: u_long secpercyl; /* 4 */
! 83: u_long secperunit; /* 4 */
! 84: u_long headswitch; /* 4 */
! 85:
! 86: u_char vid_3[4];
! 87: u_int vid_cas;
! 88: u_char vid_cal;
! 89: u_char vid_4_0[3];
! 90: u_char vid_4[64];
! 91: u_char vid_4_1[28];
! 92: u_long sbsize;
! 93: u_char vid_mot[8];
! 94:
! 95: /* CFG */
! 96: u_char cfg_0[4];
! 97: u_short cfg_atm;
! 98: u_short cfg_prm;
! 99: u_short cfg_atw;
! 100: u_short cfg_rec;
! 101:
! 102: u_short sparespertrack;
! 103: u_short sparespercyl;
! 104: u_long acylinders;
! 105: u_short rpm;
! 106: u_short cylskew;
! 107:
! 108: u_char cfg_spt;
! 109: u_char cfg_hds;
! 110: u_short cfg_trk;
! 111: u_char cfg_ilv;
! 112: u_char cfg_sof;
! 113: u_short cfg_psm;
! 114: u_short cfg_shd;
! 115: u_char cfg_2[2];
! 116: u_short cfg_pcom;
! 117: u_char cfg_3;
! 118: u_char cfg_ssr;
! 119: u_short cfg_rwcc;
! 120: u_short cfg_ecc;
! 121: u_short cfg_eatm;
! 122: u_short cfg_eprm;
! 123: u_short cfg_eatw;
! 124: u_char cfg_gpb1;
! 125: u_char cfg_gpb2;
! 126: u_char cfg_gpb3;
! 127: u_char cfg_gpb4;
! 128: u_char cfg_ssc;
! 129: u_char cfg_runit;
! 130: u_short cfg_rsvc1;
! 131: u_short cfg_rsvc2;
! 132: u_long magic2;
! 133: u_char cfg_4[192];
! 134: };
! 135: #endif /* _MVME68K_DISKLABEL_H_ */
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