disklabel.h revision 1.2.10.2
1 1.2.10.2 tls /* $NetBSD: disklabel.h,v 1.2.10.2 2014/08/20 00:02:57 tls Exp $ */ 2 1.2.10.2 tls 3 1.2.10.2 tls /* 4 1.2.10.2 tls * Copyright (c) 1995 Dale Rahn. 5 1.2.10.2 tls * All rights reserved. 6 1.2.10.2 tls * 7 1.2.10.2 tls * Redistribution and use in source and binary forms, with or without 8 1.2.10.2 tls * modification, are permitted provided that the following conditions 9 1.2.10.2 tls * are met: 10 1.2.10.2 tls * 1. Redistributions of source code must retain the above copyright 11 1.2.10.2 tls * notice, this list of conditions and the following disclaimer. 12 1.2.10.2 tls * 2. Redistributions in binary form must reproduce the above copyright 13 1.2.10.2 tls * notice, this list of conditions and the following disclaimer in the 14 1.2.10.2 tls * documentation and/or other materials provided with the distribution. 15 1.2.10.2 tls * 3. The name of the author may not be used to endorse or promote products 16 1.2.10.2 tls * derived from this software without specific prior written permission. 17 1.2.10.2 tls * 18 1.2.10.2 tls * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 1.2.10.2 tls * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 1.2.10.2 tls * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 1.2.10.2 tls * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 1.2.10.2 tls * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 1.2.10.2 tls * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 1.2.10.2 tls * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 1.2.10.2 tls * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 1.2.10.2 tls * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 1.2.10.2 tls * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 1.2.10.2 tls */ 29 1.2.10.2 tls 30 1.2.10.2 tls #ifndef _MACHINE_DISKLABEL_H_ 31 1.2.10.2 tls #define _MACHINE_DISKLABEL_H_ 32 1.2.10.2 tls 33 1.2.10.2 tls /* number of boot pieces , ie xxboot bootxx */ 34 1.2.10.2 tls #define NUMBOOT 0 35 1.2.10.2 tls 36 1.2.10.2 tls #define LABELUSESMBR 1 /* no MBR partitionning */ 37 1.2.10.2 tls #define LABELSECTOR 1 /* sector containing label */ 38 1.2.10.2 tls #define LABELOFFSET 0 /* offset of label in sector */ 39 1.2.10.2 tls #define MAXPARTITIONS 16 /* number of partitions */ 40 1.2.10.2 tls #define RAW_PART 2 /* raw partition: xx?c */ 41 1.2.10.2 tls 42 1.2.10.2 tls /* 43 1.2.10.2 tls * a cpu_disklabel is a disklabel that the bug (prom) can understand 44 1.2.10.2 tls * and live with. the bug works in terms of 256 byte blocks. in our 45 1.2.10.2 tls * case the first two bug blocks make up the cpu_disklabel (which is 512 46 1.2.10.2 tls * bytes [i.e. one sector] in length). 47 1.2.10.2 tls * 48 1.2.10.2 tls * we use a fixed layout the BSD disk structure (in 256 byte blocks): 49 1.2.10.2 tls * block 0 = the volume ID block (part of cpu_disklabel) 50 1.2.10.2 tls * block 1 = media configuration area (part of cpu_disklabel) 51 1.2.10.2 tls * block 2 = start of first level OS bootstrap (continues ...) 52 1.2.10.2 tls * block 31 = end of OS bootstrap 53 1.2.10.2 tls * block 32 = BSD filesystem superblock 54 1.2.10.2 tls * 55 1.2.10.2 tls * this gives us 30 blocks (30*256 = 7680 bytes) for the bootstrap's text+data 56 1.2.10.2 tls * 57 1.2.10.2 tls * disksubr.c translates between cpu_disklabel and BSD disklabel. 58 1.2.10.2 tls * 59 1.2.10.2 tls */ 60 1.2.10.2 tls 61 1.2.10.2 tls struct cpu_disklabel { 62 1.2.10.2 tls /* VID */ 63 1.2.10.2 tls u_char vid_id[4]; /* volume ID */ 64 1.2.10.2 tls #define VID_ID "NBSD" 65 1.2.10.2 tls u_char vid_0[16]; 66 1.2.10.2 tls u_int vid_oss; /* starting block # of bootstrap */ 67 1.2.10.2 tls #define VID_OSS 2 68 1.2.10.2 tls u_short vid_osl; /* bootstrap length (30 blocks) */ 69 1.2.10.2 tls #define VID_OSL 30 70 1.2.10.2 tls u_char vid_1[4]; 71 1.2.10.2 tls u_short vid_osa_u; /* bootstrap start address (upper) */ 72 1.2.10.2 tls u_short vid_osa_l; /* bootstrap start address (lower) */ 73 1.2.10.2 tls #define VID_OSA 0x3f0000 /* MUST match bootstrap code */ 74 1.2.10.2 tls #define VID_OSAU ((VID_OSA >> 16) & 0xffff) 75 1.2.10.2 tls #define VID_OSAL (VID_OSA & 0xffff) 76 1.2.10.2 tls u_char vid_2[2]; 77 1.2.10.2 tls u_short partitions; 78 1.2.10.2 tls u_char vid_vd[16]; 79 1.2.10.2 tls u_long bbsize; 80 1.2.10.2 tls u_long magic1; /* 4 */ 81 1.2.10.2 tls u_short type; /* 2 */ 82 1.2.10.2 tls u_short subtype; /* 2 */ 83 1.2.10.2 tls u_char packname[16]; /* 16 */ 84 1.2.10.2 tls u_long flags; /* 4 */ 85 1.2.10.2 tls u_long drivedata[5]; /* 4 */ 86 1.2.10.2 tls u_long spare[5]; /* 4 */ 87 1.2.10.2 tls u_short checksum; /* 2 */ 88 1.2.10.2 tls 89 1.2.10.2 tls u_long secpercyl; /* 4 */ 90 1.2.10.2 tls u_long secperunit; /* 4 */ 91 1.2.10.2 tls u_long headswitch; /* 4 */ 92 1.2.10.2 tls 93 1.2.10.2 tls u_char vid_3[4]; 94 1.2.10.2 tls u_int vid_cas; /* block # of CFG area, hardwired at 1 */ 95 1.2.10.2 tls #define VID_CAS 1 96 1.2.10.2 tls u_char vid_cal; /* length of CFG area, in blocks (1) */ 97 1.2.10.2 tls #define VID_CAL 1 98 1.2.10.2 tls u_char vid_4_0[3]; 99 1.2.10.2 tls u_char vid_4[64]; 100 1.2.10.2 tls u_char vid_4_1[28]; 101 1.2.10.2 tls u_long sbsize; 102 1.2.10.2 tls u_char vid_mot[8]; /* must contain "MOTOROLA" */ 103 1.2.10.2 tls #define VID_MOT "MOTOROLA" 104 1.2.10.2 tls 105 1.2.10.2 tls /* CFG */ 106 1.2.10.2 tls u_char cfg_0[4]; 107 1.2.10.2 tls u_short cfg_atm; 108 1.2.10.2 tls u_short cfg_prm; 109 1.2.10.2 tls u_short cfg_atw; 110 1.2.10.2 tls u_short cfg_rec; /* block size (256) */ 111 1.2.10.2 tls #define CFG_REC 256 112 1.2.10.2 tls 113 1.2.10.2 tls u_short sparespertrack; 114 1.2.10.2 tls u_short sparespercyl; 115 1.2.10.2 tls u_long acylinders; 116 1.2.10.2 tls u_short rpm; 117 1.2.10.2 tls u_short cylskew; 118 1.2.10.2 tls 119 1.2.10.2 tls u_char cfg_spt; 120 1.2.10.2 tls u_char cfg_hds; 121 1.2.10.2 tls u_short cfg_trk; 122 1.2.10.2 tls u_char cfg_ilv; 123 1.2.10.2 tls u_char cfg_sof; 124 1.2.10.2 tls u_short cfg_psm; /* physical sector size (512) */ 125 1.2.10.2 tls #define CFG_PSM 512 126 1.2.10.2 tls u_short cfg_shd; 127 1.2.10.2 tls u_char cfg_2[2]; 128 1.2.10.2 tls u_short cfg_pcom; 129 1.2.10.2 tls u_char cfg_3; 130 1.2.10.2 tls u_char cfg_ssr; 131 1.2.10.2 tls u_short cfg_rwcc; 132 1.2.10.2 tls u_short cfg_ecc; 133 1.2.10.2 tls u_short cfg_eatm; 134 1.2.10.2 tls u_short cfg_eprm; 135 1.2.10.2 tls u_short cfg_eatw; 136 1.2.10.2 tls u_char cfg_gpb1; 137 1.2.10.2 tls u_char cfg_gpb2; 138 1.2.10.2 tls u_char cfg_gpb3; 139 1.2.10.2 tls u_char cfg_gpb4; 140 1.2.10.2 tls u_char cfg_ssc; 141 1.2.10.2 tls u_char cfg_runit; 142 1.2.10.2 tls u_short cfg_rsvc1; 143 1.2.10.2 tls u_short cfg_rsvc2; 144 1.2.10.2 tls u_long magic2; 145 1.2.10.2 tls u_char cfg_4[192]; 146 1.2.10.2 tls } __attribute__((__packed__)); 147 1.2.10.2 tls #endif /* _MACHINE_DISKLABEL_H_ */ 148
Indexes created Thu Oct 23 18:09:57 GMT 2025