devopen.c revision 1.6 1 1.6 tsutsui /* $NetBSD: devopen.c,v 1.6 2003/11/14 16:52:40 tsutsui Exp $ */
2 1.2 thorpej
3 1.2 thorpej /*-
4 1.2 thorpej * Copyright (c) 1996, 1997 The NetBSD Foundation, Inc.
5 1.2 thorpej * All rights reserved.
6 1.2 thorpej *
7 1.2 thorpej * This code is derived from software contributed to The NetBSD Foundation
8 1.2 thorpej * by Jason R. Thorpe.
9 1.2 thorpej *
10 1.2 thorpej * Redistribution and use in source and binary forms, with or without
11 1.2 thorpej * modification, are permitted provided that the following conditions
12 1.2 thorpej * are met:
13 1.2 thorpej * 1. Redistributions of source code must retain the above copyright
14 1.2 thorpej * notice, this list of conditions and the following disclaimer.
15 1.2 thorpej * 2. Redistributions in binary form must reproduce the above copyright
16 1.2 thorpej * notice, this list of conditions and the following disclaimer in the
17 1.2 thorpej * documentation and/or other materials provided with the distribution.
18 1.2 thorpej * 3. All advertising materials mentioning features or use of this software
19 1.2 thorpej * must display the following acknowledgement:
20 1.2 thorpej * This product includes software developed by the NetBSD
21 1.2 thorpej * Foundation, Inc. and its contributors.
22 1.2 thorpej * 4. Neither the name of The NetBSD Foundation nor the names of its
23 1.2 thorpej * contributors may be used to endorse or promote products derived
24 1.2 thorpej * from this software without specific prior written permission.
25 1.2 thorpej *
26 1.2 thorpej * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27 1.2 thorpej * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28 1.2 thorpej * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29 1.2 thorpej * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30 1.2 thorpej * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31 1.2 thorpej * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32 1.2 thorpej * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33 1.2 thorpej * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34 1.2 thorpej * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35 1.2 thorpej * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36 1.2 thorpej * POSSIBILITY OF SUCH DAMAGE.
37 1.2 thorpej */
38 1.1 thorpej
39 1.1 thorpej /*-
40 1.1 thorpej * Copyright (c) 1993 John Brezak
41 1.1 thorpej * All rights reserved.
42 1.1 thorpej *
43 1.1 thorpej * Redistribution and use in source and binary forms, with or without
44 1.1 thorpej * modification, are permitted provided that the following conditions
45 1.1 thorpej * are met:
46 1.1 thorpej * 1. Redistributions of source code must retain the above copyright
47 1.1 thorpej * notice, this list of conditions and the following disclaimer.
48 1.1 thorpej * 2. Redistributions in binary form must reproduce the above copyright
49 1.1 thorpej * notice, this list of conditions and the following disclaimer in the
50 1.1 thorpej * documentation and/or other materials provided with the distribution.
51 1.1 thorpej * 3. The name of the author may not be used to endorse or promote products
52 1.1 thorpej * derived from this software without specific prior written permission.
53 1.1 thorpej *
54 1.1 thorpej * THIS SOFTWARE IS PROVIDED BY THE AUTHOR `AS IS'' AND ANY EXPRESS OR
55 1.1 thorpej * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
56 1.1 thorpej * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
57 1.1 thorpej * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
58 1.1 thorpej * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
59 1.1 thorpej * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
60 1.1 thorpej * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
61 1.1 thorpej * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
62 1.1 thorpej * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
63 1.1 thorpej * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
64 1.1 thorpej * POSSIBILITY OF SUCH DAMAGE.
65 1.1 thorpej */
66 1.1 thorpej
67 1.1 thorpej #include <sys/param.h>
68 1.1 thorpej #include <sys/reboot.h>
69 1.3 gmcgarry
70 1.3 gmcgarry #include <lib/libkern/libkern.h>
71 1.1 thorpej
72 1.1 thorpej #include <lib/libsa/stand.h>
73 1.1 thorpej #include <hp300/stand/common/samachdep.h>
74 1.1 thorpej
75 1.1 thorpej u_int opendev;
76 1.1 thorpej
77 1.1 thorpej #define ispart(c) ((c) >= 'a' && (c) <= 'h')
78 1.1 thorpej
79 1.6 tsutsui static void usage(void);
80 1.6 tsutsui static int devlookup(const char * ,int);
81 1.6 tsutsui static int devparse(const char *, int *, int*, int*, int*, int*, char **);
82 1.6 tsutsui
83 1.6 tsutsui int
84 1.1 thorpej atoi(char *cp)
85 1.1 thorpej {
86 1.6 tsutsui int val = 0;
87 1.6 tsutsui
88 1.6 tsutsui while (isdigit(*cp))
89 1.6 tsutsui val = val * 10 + (*cp++ - '0');
90 1.6 tsutsui return val;
91 1.1 thorpej }
92 1.1 thorpej
93 1.6 tsutsui void
94 1.6 tsutsui usage(void)
95 1.1 thorpej {
96 1.6 tsutsui
97 1.6 tsutsui printf("Usage: device(adaptor, controller, drive, partition)file\n"
98 1.6 tsutsui " <device><unit><partitionletter>:file\n");
99 1.1 thorpej }
100 1.1 thorpej
101 1.6 tsutsui static int
102 1.1 thorpej devlookup(d, len)
103 1.1 thorpej const char *d;
104 1.1 thorpej int len;
105 1.1 thorpej {
106 1.6 tsutsui struct devsw *dp = devsw;
107 1.6 tsutsui int i;
108 1.1 thorpej
109 1.6 tsutsui for (i = 0; i < ndevs; i++, dp++) {
110 1.6 tsutsui if (dp->dv_name && strncmp(dp->dv_name, d, len) == 0) {
111 1.6 tsutsui /*
112 1.6 tsutsui * Set the filesystem and startup up according to
113 1.6 tsutsui * the device being opened.
114 1.6 tsutsui */
115 1.6 tsutsui switch (i) {
116 1.6 tsutsui case 0: /* ct */
117 1.6 tsutsui memcpy(file_system, file_system_rawfs,
118 1.6 tsutsui sizeof(struct fs_ops));
119 1.6 tsutsui break;
120 1.6 tsutsui
121 1.6 tsutsui case 2: /* rd */
122 1.6 tsutsui case 4: /* sd */
123 1.6 tsutsui memcpy(file_system, file_system_ufs,
124 1.6 tsutsui sizeof(struct fs_ops));
125 1.6 tsutsui break;
126 1.6 tsutsui
127 1.6 tsutsui case 6: /* le */
128 1.6 tsutsui memcpy(file_system, file_system_nfs,
129 1.6 tsutsui sizeof(struct fs_ops));
130 1.6 tsutsui break;
131 1.6 tsutsui
132 1.6 tsutsui default:
133 1.6 tsutsui /* Agh! What happened?! */
134 1.6 tsutsui goto bad;
135 1.6 tsutsui }
136 1.6 tsutsui return i;
137 1.6 tsutsui }
138 1.1 thorpej }
139 1.1 thorpej
140 1.1 thorpej bad:
141 1.6 tsutsui printf("No such device - Configured devices are:\n");
142 1.6 tsutsui for (dp = devsw, i = 0; i < ndevs; i++, dp++)
143 1.6 tsutsui if (dp->dv_name)
144 1.6 tsutsui printf(" %s", dp->dv_name);
145 1.6 tsutsui printf("\n");
146 1.6 tsutsui errno = ENODEV;
147 1.6 tsutsui return -1;
148 1.1 thorpej }
149 1.1 thorpej
150 1.1 thorpej /*
151 1.1 thorpej * Parse a device spec in one of two forms.
152 1.1 thorpej *
153 1.1 thorpej * dev(adapt, ctlr, unit, part)file
154 1.1 thorpej * [A-Za-z]*[0-9]*[A-Za-z]:file
155 1.1 thorpej * dev unit part
156 1.1 thorpej */
157 1.6 tsutsui static int
158 1.1 thorpej devparse(fname, dev, adapt, ctlr, unit, part, file)
159 1.1 thorpej const char *fname;
160 1.1 thorpej int *dev, *adapt, *ctlr, *unit, *part;
161 1.1 thorpej char **file;
162 1.1 thorpej {
163 1.6 tsutsui int i;
164 1.6 tsutsui char *s, *args[4];
165 1.5 tsutsui
166 1.6 tsutsui /* get device name */
167 1.6 tsutsui for (s = (char *)fname; *s && *s != '/' && *s != ':' && *s != '('; s++)
168 1.6 tsutsui ;
169 1.6 tsutsui
170 1.6 tsutsui /* first form */
171 1.6 tsutsui if (*s == '(') {
172 1.6 tsutsui /* lookup device and get index */
173 1.6 tsutsui if ((*dev = devlookup(fname, s - fname)) < 0)
174 1.6 tsutsui goto baddev;
175 1.6 tsutsui
176 1.6 tsutsui /* tokenize device ident */
177 1.6 tsutsui args[0] = ++s;
178 1.6 tsutsui for (args[0] = s, i = 1; *s && *s != ')'; s++) {
179 1.6 tsutsui if (*s == ',')
180 1.6 tsutsui args[i++] = ++s;
181 1.6 tsutsui }
182 1.6 tsutsui switch(i) {
183 1.6 tsutsui case 4:
184 1.6 tsutsui *adapt = atoi(args[0]);
185 1.6 tsutsui *ctlr = atoi(args[1]);
186 1.6 tsutsui *unit = atoi(args[2]);
187 1.6 tsutsui *part = atoi(args[3]);
188 1.6 tsutsui break;
189 1.6 tsutsui case 3:
190 1.6 tsutsui *ctlr = atoi(args[0]);
191 1.6 tsutsui *unit = atoi(args[1]);
192 1.6 tsutsui *part = atoi(args[2]);
193 1.6 tsutsui break;
194 1.6 tsutsui case 2:
195 1.6 tsutsui *unit = atoi(args[0]);
196 1.6 tsutsui *part = atoi(args[1]);
197 1.6 tsutsui break;
198 1.6 tsutsui case 1:
199 1.6 tsutsui *part = atoi(args[0]);
200 1.6 tsutsui break;
201 1.6 tsutsui case 0:
202 1.6 tsutsui break;
203 1.6 tsutsui }
204 1.6 tsutsui *file = ++s;
205 1.1 thorpej }
206 1.1 thorpej
207 1.6 tsutsui /* second form */
208 1.6 tsutsui else if (*s == ':') {
209 1.6 tsutsui int temp;
210 1.1 thorpej
211 1.6 tsutsui /* isolate device */
212 1.6 tsutsui for (s = (char *)fname; *s != ':' && !isdigit(*s); s++);
213 1.1 thorpej
214 1.6 tsutsui /* lookup device and get index */
215 1.6 tsutsui if ((*dev = devlookup(fname, s - fname)) < 0)
216 1.6 tsutsui goto baddev;
217 1.6 tsutsui
218 1.6 tsutsui /* isolate unit */
219 1.6 tsutsui if ((temp = atoi(s)) > 255)
220 1.6 tsutsui goto bad;
221 1.6 tsutsui *adapt = temp / 8;
222 1.6 tsutsui *ctlr = temp % 8;
223 1.6 tsutsui for (; isdigit(*s); s++)
224 1.6 tsutsui ;
225 1.1 thorpej
226 1.6 tsutsui /* translate partition */
227 1.6 tsutsui if (!ispart(*s))
228 1.6 tsutsui goto bad;
229 1.1 thorpej
230 1.6 tsutsui *part = *s++ - 'a';
231 1.6 tsutsui if (*s != ':')
232 1.6 tsutsui goto bad;
233 1.6 tsutsui *file = ++s;
234 1.6 tsutsui }
235 1.6 tsutsui
236 1.6 tsutsui /* no device present */
237 1.6 tsutsui else
238 1.6 tsutsui *file = (char *)fname;
239 1.1 thorpej
240 1.6 tsutsui /* return the remaining unparsed part as the file to boot */
241 1.6 tsutsui return 0;
242 1.1 thorpej
243 1.1 thorpej bad:
244 1.6 tsutsui usage();
245 1.1 thorpej
246 1.1 thorpej baddev:
247 1.6 tsutsui return -1;
248 1.1 thorpej }
249 1.1 thorpej
250 1.1 thorpej
251 1.6 tsutsui int
252 1.1 thorpej devopen(f, fname, file)
253 1.1 thorpej struct open_file *f;
254 1.1 thorpej const char *fname;
255 1.1 thorpej char **file;
256 1.1 thorpej {
257 1.6 tsutsui int error;
258 1.1 thorpej int dev, adapt, ctlr, unit, part;
259 1.1 thorpej struct devsw *dp = &devsw[0];
260 1.1 thorpej
261 1.1 thorpej dev = B_TYPE(bootdev);
262 1.1 thorpej adapt = B_ADAPTOR(bootdev);
263 1.1 thorpej ctlr = B_CONTROLLER(bootdev);
264 1.1 thorpej unit = B_UNIT(bootdev);
265 1.1 thorpej part = B_PARTITION(bootdev);
266 1.1 thorpej
267 1.6 tsutsui if ((error = devparse(fname, &dev, &adapt, &ctlr, &unit, &part, file))
268 1.6 tsutsui != 0)
269 1.6 tsutsui return error;
270 1.1 thorpej
271 1.1 thorpej /*
272 1.1 thorpej * Set up filesystem type based on what device we're opening.
273 1.1 thorpej */
274 1.1 thorpej switch (dev) {
275 1.1 thorpej case 0: /* ct */
276 1.6 tsutsui memcpy(file_system, file_system_rawfs, sizeof(struct fs_ops));
277 1.1 thorpej break;
278 1.1 thorpej
279 1.1 thorpej case 2: /* rd */
280 1.1 thorpej case 4: /* sd */
281 1.6 tsutsui memcpy(file_system, file_system_ufs, sizeof(struct fs_ops));
282 1.1 thorpej break;
283 1.1 thorpej
284 1.1 thorpej case 6: /* le */
285 1.6 tsutsui memcpy(file_system, file_system_nfs, sizeof(struct fs_ops));
286 1.1 thorpej break;
287 1.1 thorpej
288 1.1 thorpej default:
289 1.1 thorpej /* XXX what else should we do here? */
290 1.1 thorpej printf("WARNING: BOGUS BOOT DEV TYPE 0x%x!\n", dev);
291 1.6 tsutsui return EIO;
292 1.1 thorpej }
293 1.1 thorpej
294 1.1 thorpej dp = &devsw[dev];
295 1.1 thorpej
296 1.1 thorpej if (!dp->dv_open)
297 1.6 tsutsui return ENODEV;
298 1.1 thorpej
299 1.1 thorpej f->f_dev = dp;
300 1.1 thorpej
301 1.1 thorpej if ((error = (*dp->dv_open)(f, adapt, ctlr, part)) == 0) {
302 1.1 thorpej if ((error =
303 1.1 thorpej (*punitsw[dev].p_punit)(adapt, ctlr, &unit)) != 0) {
304 1.1 thorpej goto bad;
305 1.1 thorpej }
306 1.1 thorpej opendev = MAKEBOOTDEV(dev, adapt, ctlr, unit, part);
307 1.6 tsutsui return 0;
308 1.1 thorpej }
309 1.1 thorpej
310 1.1 thorpej bad:
311 1.1 thorpej printf("%s(%d,%d,%d,%d): %s\n", devsw[dev].dv_name,
312 1.1 thorpej adapt, ctlr, unit, part, strerror(error));
313 1.1 thorpej
314 1.6 tsutsui return error;
315 1.1 thorpej }
316