devopen.c revision 1.3.8.2
1 /* $NetBSD: devopen.c,v 1.3.8.2 2002/08/13 02:18:12 nathanw Exp $ */ 2 3 /*- 4 * Copyright (c) 1996, 1997 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /*- 40 * Copyright (c) 1993 John Brezak 41 * All rights reserved. 42 * 43 * Redistribution and use in source and binary forms, with or without 44 * modification, are permitted provided that the following conditions 45 * are met: 46 * 1. Redistributions of source code must retain the above copyright 47 * notice, this list of conditions and the following disclaimer. 48 * 2. Redistributions in binary form must reproduce the above copyright 49 * notice, this list of conditions and the following disclaimer in the 50 * documentation and/or other materials provided with the distribution. 51 * 3. The name of the author may not be used to endorse or promote products 52 * derived from this software without specific prior written permission. 53 * 54 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR `AS IS'' AND ANY EXPRESS OR 55 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 56 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 57 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 58 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 59 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 60 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 61 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 62 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 63 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 64 * POSSIBILITY OF SUCH DAMAGE. 65 */ 66 67 #include <sys/param.h> 68 #include <sys/reboot.h> 69 70 #include <lib/libkern/libkern.h> 71 72 #include <lib/libsa/stand.h> 73 #include <hp300/stand/common/samachdep.h> 74 75 u_int opendev; 76 77 #define ispart(c) ((c) >= 'a' && (c) <= 'h') 78 79 atoi(char *cp) 80 { 81 int val = 0; 82 while(isdigit(*cp)) 83 val = val * 10 + (*cp++ - '0'); 84 return(val); 85 } 86 87 usage() 88 { 89 printf("\ 90 Usage: device(adaptor, controller, drive, partition)file\n\ 91 <device><unit><partitionletter>:file\n\ 92 "); 93 } 94 95 devlookup(d, len) 96 const char *d; 97 int len; 98 { 99 struct devsw *dp = devsw; 100 int i; 101 102 for (i = 0; i < ndevs; i++, dp++) { 103 if (dp->dv_name && strncmp(dp->dv_name, d, len) == 0) { 104 /* 105 * Set the filesystem and startup up according to the device 106 * being opened. 107 */ 108 switch (i) { 109 case 0: /* ct */ 110 bcopy(file_system_rawfs, file_system, sizeof(struct fs_ops)); 111 break; 112 113 case 2: /* rd */ 114 case 4: /* sd */ 115 bcopy(file_system_ufs, file_system, sizeof(struct fs_ops)); 116 break; 117 118 case 6: /* le */ 119 bcopy(file_system_nfs, file_system, sizeof(struct fs_ops)); 120 break; 121 122 default: 123 /* Agh! What happened?! */ 124 goto bad; 125 } 126 return(i); 127 } 128 } 129 130 bad: 131 printf("No such device - Configured devices are:\n"); 132 for (dp = devsw, i = 0; i < ndevs; i++, dp++) 133 if (dp->dv_name) 134 printf(" %s", dp->dv_name); 135 printf("\n"); 136 errno = ENODEV; 137 return(-1); 138 } 139 140 /* 141 * Parse a device spec in one of two forms. 142 * 143 * dev(adapt, ctlr, unit, part)file 144 * [A-Za-z]*[0-9]*[A-Za-z]:file 145 * dev unit part 146 */ 147 devparse(fname, dev, adapt, ctlr, unit, part, file) 148 const char *fname; 149 int *dev, *adapt, *ctlr, *unit, *part; 150 char **file; 151 { 152 int *argp, i; 153 char *s, *args[4]; 154 155 /* first form */ 156 if (*s == '(') { 157 /* lookup device and get index */ 158 if ((*dev = devlookup(fname, s - fname)) < 0) 159 goto baddev; 160 161 /* tokenize device ident */ 162 args[0] = ++s; 163 for (args[0] = s, i = 1; *s && *s != ')'; s++) { 164 if (*s == ',') 165 args[i++] = ++s; 166 } 167 switch(i) { 168 case 4: 169 *adapt = atoi(args[0]); 170 *ctlr = atoi(args[1]); 171 *unit = atoi(args[2]); 172 *part = atoi(args[3]); 173 break; 174 case 3: 175 *ctlr = atoi(args[0]); 176 *unit = atoi(args[1]); 177 *part = atoi(args[2]); 178 break; 179 case 2: 180 *unit = atoi(args[0]); 181 *part = atoi(args[1]); 182 break; 183 case 1: 184 *part = atoi(args[0]); 185 break; 186 case 0: 187 break; 188 } 189 *file = ++s; 190 } 191 192 /* second form */ 193 else if (*s == ':') { 194 int temp; 195 196 /* isolate device */ 197 for (s = (char *)fname; *s != ':' && !isdigit(*s); s++); 198 199 /* lookup device and get index */ 200 if ((*dev = devlookup(fname, s - fname)) < 0) 201 goto baddev; 202 203 /* isolate unit */ 204 if ((temp = atoi(s)) > 255) 205 goto bad; 206 *adapt = temp / 8; 207 *ctlr = temp % 8; 208 for (; isdigit(*s); s++); 209 210 /* translate partition */ 211 if (!ispart(*s)) 212 goto bad; 213 214 *part = *s++ - 'a'; 215 if (*s != ':') 216 goto bad; 217 *file = ++s; 218 } 219 220 /* no device present */ 221 else 222 *file = (char *)fname; 223 224 /* return the remaining unparsed part as the file to boot */ 225 return(0); 226 227 bad: 228 usage(); 229 230 baddev: 231 return(-1); 232 } 233 234 235 devopen(f, fname, file) 236 struct open_file *f; 237 const char *fname; 238 char **file; 239 { 240 int n, error; 241 int dev, adapt, ctlr, unit, part; 242 struct devsw *dp = &devsw[0]; 243 244 dev = B_TYPE(bootdev); 245 adapt = B_ADAPTOR(bootdev); 246 ctlr = B_CONTROLLER(bootdev); 247 unit = B_UNIT(bootdev); 248 part = B_PARTITION(bootdev); 249 250 if (error = devparse(fname, &dev, &adapt, &ctlr, &unit, &part, file)) 251 return(error); 252 253 /* 254 * Set up filesystem type based on what device we're opening. 255 */ 256 switch (dev) { 257 case 0: /* ct */ 258 bcopy(file_system_rawfs, file_system, sizeof(struct fs_ops)); 259 break; 260 261 case 2: /* rd */ 262 case 4: /* sd */ 263 bcopy(file_system_ufs, file_system, sizeof(struct fs_ops)); 264 break; 265 266 case 6: /* le */ 267 bcopy(file_system_nfs, file_system, sizeof(struct fs_ops)); 268 break; 269 270 default: 271 /* XXX what else should we do here? */ 272 printf("WARNING: BOGUS BOOT DEV TYPE 0x%x!\n", dev); 273 return (EIO); 274 } 275 276 dp = &devsw[dev]; 277 278 if (!dp->dv_open) 279 return(ENODEV); 280 281 f->f_dev = dp; 282 283 if ((error = (*dp->dv_open)(f, adapt, ctlr, part)) == 0) { 284 if ((error = 285 (*punitsw[dev].p_punit)(adapt, ctlr, &unit)) != 0) { 286 goto bad; 287 } 288 opendev = MAKEBOOTDEV(dev, adapt, ctlr, unit, part); 289 return(0); 290 } 291 292 bad: 293 printf("%s(%d,%d,%d,%d): %s\n", devsw[dev].dv_name, 294 adapt, ctlr, unit, part, strerror(error)); 295 296 return(error); 297 } 298
Indexes created Fri Oct 03 02:09:57 GMT 2025