Annotation of sys/arch/mvme68k/include/disklabel.h, Revision 1.1.1.1
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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