Annotation of sys/arch/mvme68k/stand/wrtvid/wrtvid.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: wrtvid.c,v 1.7 2007/06/17 00:28:56 deraadt Exp $ */
2:
3: /*
4: * Copyright (c) 1995 Dale Rahn <drahn@openbsd.org>
5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17: */
18:
19: #include <sys/types.h>
20: #include <sys/stat.h>
21: #include <sys/disklabel.h>
22: #include <fcntl.h>
23: #include <unistd.h>
24: #include <stdio.h>
25: #define __DBINTERFACE_PRIVATE
26: #include <db.h>
27:
28: #define BUF_SIZ 512
29: static void
30: copy_exe(int exe_file, int tape_exe)
31: {
32: char *buf;
33: int cnt = 0;
34:
35: buf = (char *)malloc(BUF_SIZ);
36:
37: lseek (exe_file, 0x20, SEEK_SET);
38: while (BUF_SIZ == (cnt = read(exe_file, buf, BUF_SIZ)))
39: write(tape_exe, buf, cnt);
40: bzero(&buf[cnt], BUF_SIZ-cnt);
41: write(tape_exe, buf, BUF_SIZ);
42: }
43:
44: static void
45: swabvid(struct mvmedisklabel *pcpul)
46: {
47: M_32_SWAP(pcpul->vid_oss);
48: M_16_SWAP(pcpul->vid_osl);
49: /*
50: M_16_SWAP(pcpul->vid_osa_u);
51: M_16_SWAP(pcpul->vid_osa_l);
52: */
53: M_32_SWAP(pcpul->vid_cas);
54: }
55:
56: static void
57: swabcfg(struct mvmedisklabel *pcpul)
58: {
59: M_16_SWAP(pcpul->cfg_atm);
60: M_16_SWAP(pcpul->cfg_prm);
61: M_16_SWAP(pcpul->cfg_atm);
62: M_16_SWAP(pcpul->cfg_rec);
63: M_16_SWAP(pcpul->cfg_trk);
64: M_16_SWAP(pcpul->cfg_psm);
65: M_16_SWAP(pcpul->cfg_shd);
66: M_16_SWAP(pcpul->cfg_pcom);
67: M_16_SWAP(pcpul->cfg_rwcc);
68: M_16_SWAP(pcpul->cfg_ecc);
69: M_16_SWAP(pcpul->cfg_eatm);
70: M_16_SWAP(pcpul->cfg_eprm);
71: M_16_SWAP(pcpul->cfg_eatw);
72: M_16_SWAP(pcpul->cfg_rsvc1);
73: M_16_SWAP(pcpul->cfg_rsvc2);
74: }
75:
76: int
77: main(int argc, char *argv[])
78: {
79: struct mvmedisklabel *pcpul;
80: struct stat stat;
81: int exe_file;
82: int tape_vid;
83: int tape_exe;
84: unsigned int exe_addr;
85: unsigned short exe_addr_u;
86: unsigned short exe_addr_l;
87: char *filename;
88: char fileext[256];
89: char filebase[256];
90:
91: if (argc == 0)
92: filename = "a.out";
93: else
94: filename = argv[1];
95:
96: exe_file = open(filename, O_RDONLY,0444);
97: if (exe_file == -1) {
98: perror(filename);
99: exit(2);
100: }
101: snprintf(fileext, sizeof fileext, "%c%cboot", filename[4], filename[5]);
102: tape_vid = open(fileext, O_WRONLY|O_CREAT|O_TRUNC, 0644);
103: snprintf(fileext, sizeof fileext, "boot%c%c", filename[4], filename[5]);
104: tape_exe = open(fileext, O_WRONLY|O_CREAT|O_TRUNC,0644);
105:
106: pcpul = (struct mvmedisklabel *)malloc(sizeof(struct mvmedisklabel));
107: bzero(pcpul, sizeof(struct mvmedisklabel));
108:
109: memcpy(pcpul->vid_id, "NBSD", sizeof pcpul->vid_id);
110:
111: fstat(exe_file, &stat);
112: /* size in 256 byte blocks round up after a.out header removed */
113:
114: if (filename[5] == 't' ) {
115: pcpul->vid_oss = 1;
116: } else {
117: pcpul->vid_oss = 2;
118: }
119: pcpul->vid_osl = (((stat.st_size -0x20) +511) / 512) *2;
120:
121: lseek(exe_file, 0x14, SEEK_SET);
122: read(exe_file, &exe_addr, 4);
123:
124: /* check this, it may not work in both endian. */
125: {
126: union {
127: struct s {
128: unsigned short s1;
129: unsigned short s2;
130: } s;
131: unsigned long l;
132: } a;
133: a.l = exe_addr;
134: pcpul->vid_osa_u = a.s.s1;
135: pcpul->vid_osa_l = a.s.s2;
136:
137: }
138: pcpul->vid_cas = 1;
139: pcpul->vid_cal = 1;
140: /* do not want to write past end of structure, not null terminated */
141: strncpy(pcpul->vid_mot, "MOTOROLA", 8);
142:
143: if (BYTE_ORDER != BIG_ENDIAN)
144: swabvid(pcpul);
145:
146: pcpul->cfg_rec = 0x100;
147: pcpul->cfg_psm = 0x200;
148:
149: if (BYTE_ORDER != BIG_ENDIAN)
150: swabcfg(pcpul);
151:
152: write(tape_vid, pcpul, sizeof(struct mvmedisklabel));
153:
154: free(pcpul);
155:
156: copy_exe(exe_file, tape_exe);
157: close(exe_file);
158: close(tape_vid);
159: close(tape_exe);
160: return (0);
161: }
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