autoconf.c revision 1.8
1 /* $NetBSD: autoconf.c,v 1.8 2002/07/11 16:03:14 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1988 University of Utah. 5 * Copyright (c) 1982, 1986, 1990, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * the Systems Programming Group of the University of Utah Computer 10 * Science Department. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the University of 23 * California, Berkeley and its contributors. 24 * 4. Neither the name of the University nor the names of its contributors 25 * may be used to endorse or promote products derived from this software 26 * without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 * 40 * from: Utah $Hdr: autoconf.c 1.36 92/12/20$ 41 * 42 * @(#)autoconf.c 8.2 (Berkeley) 1/12/94 43 */ 44 45 /* 46 * Setup the system to run on the current machine. 47 * 48 * Configure() is called at boot time. Available 49 * devices are determined (from possibilities mentioned in ioconf.c), 50 * and the drivers are initialized. 51 */ 52 53 #include <sys/param.h> 54 #include <sys/systm.h> 55 #include <sys/map.h> 56 #include <sys/buf.h> 57 #include <sys/dkstat.h> 58 #include <sys/conf.h> 59 #include <sys/reboot.h> 60 #include <sys/device.h> 61 62 #include <machine/vmparam.h> 63 #include <machine/autoconf.h> 64 #include <machine/disklabel.h> 65 #include <machine/cpu.h> 66 #include <machine/pte.h> 67 68 #include <next68k/next68k/isr.h> 69 #include <next68k/next68k/nextrom.h> 70 71 struct device *booted_device; /* boot device */ 72 73 void mainbus_attach __P((struct device *, struct device *, void *)); 74 int mainbus_match __P((struct device *, struct cfdata *, void *)); 75 int mainbus_print __P((void *, const char *)); 76 77 static struct device *getdevunit __P((char *, int)); 78 static int devidentparse __P((const char *, int *, int *, int *)); 79 static int atoi __P((const char *)); 80 81 struct mainbus_softc { 82 struct device sc_dev; 83 }; 84 85 struct cfattach mainbus_ca = { 86 sizeof(struct mainbus_softc), mainbus_match, mainbus_attach 87 }; 88 89 #if 0 90 struct cfdriver mainbus_cd = { 91 NULL, "mainbus", DV_DULL, 0 92 }; 93 #endif 94 95 static char *mainbusdevs[] = { 96 "intio", 97 "nextdisplay", 98 NULL 99 }; 100 101 struct device_equiv { 102 char *alias; 103 char *real; 104 }; 105 static struct device_equiv device_equiv[] = { 106 { "en", "xe" }, 107 { "tp", "xe" }, 108 }; 109 static int ndevice_equivs = (sizeof(device_equiv)/sizeof(device_equiv[0])); 110 111 int 112 mainbus_match(parent, cf, args) 113 struct device *parent; 114 struct cfdata *cf; 115 void *args; 116 { 117 static int mainbus_matched; 118 119 if (mainbus_matched) 120 return (0); 121 122 return ((mainbus_matched = 1)); 123 } 124 125 void 126 mainbus_attach(parent, self, args) 127 struct device *parent, *self; 128 void *args; 129 { 130 char **devices; 131 int i; 132 133 printf("\n"); 134 135 /* 136 * Attach children. 137 */ 138 devices = mainbusdevs; 139 140 for (i = 0; devices[i] != NULL; ++i) 141 (void)config_found(self, devices[i], mainbus_print); 142 } 143 144 int 145 mainbus_print(aux, cp) 146 void *aux; 147 const char *cp; 148 { 149 char *devname = aux; 150 151 if (cp) 152 printf("%s at %s\n", devname, cp); 153 154 return (UNCONF); 155 } 156 157 /* 158 * Determine mass storage and memory configuration for a machine. 159 */ 160 void 161 cpu_configure() 162 { 163 164 booted_device = NULL; /* set by device drivers (if found) */ 165 166 INTR_SETMASK(0); 167 168 init_sir(); 169 170 if (config_rootfound("mainbus", NULL) == NULL) 171 panic("autoconfig failed, no root"); 172 173 /* Turn on interrupts */ 174 spl0(); 175 } 176 177 void 178 cpu_rootconf() 179 { 180 int count, lun, part; 181 182 count = lun = part = 0; 183 184 devidentparse (rom_boot_info, &count, &lun, &part); 185 booted_device = getdevunit (rom_boot_dev, count); 186 187 printf("boot device: %s\n", 188 (booted_device) ? booted_device->dv_xname : "<unknown>"); 189 190 setroot(booted_device, part); 191 } 192 193 /* 194 * find a device matching "name" and unit number 195 */ 196 static struct device * 197 getdevunit(name, unit) 198 char *name; 199 int unit; 200 { 201 struct device *dev = alldevs.tqh_first; 202 char num[10], fullname[16]; 203 int lunit; 204 int i; 205 206 for (i = 0; i < ndevice_equivs; i++) 207 if (device_equiv->alias && strcmp (name, device_equiv->alias) == 0) 208 name = device_equiv->real; 209 210 /* compute length of name and decimal expansion of unit number */ 211 sprintf(num, "%d", unit); 212 lunit = strlen(num); 213 if (strlen(name) + lunit >= sizeof(fullname) - 1) 214 panic("config_attach: device name too long"); 215 216 strcpy(fullname, name); 217 strcat(fullname, num); 218 219 while (strcmp(dev->dv_xname, fullname) != 0) { 220 if ((dev = dev->dv_list.tqe_next) == NULL) 221 return NULL; 222 } 223 return dev; 224 } 225 226 /* 227 * Parse a device ident. 228 * 229 * Format: 230 * (count, lun, part) 231 */ 232 static int 233 devidentparse(spec, count, lun, part) 234 const char *spec; 235 int *count; 236 int *lun; 237 int *part; 238 { 239 int i; 240 const char *args[3]; 241 242 if (*spec == '(') { 243 /* tokenize device ident */ 244 args[0] = ++spec; 245 for (i = 1; *spec && *spec != ')' && i<3; spec++) { 246 if (*spec == ',') 247 args[i++] = ++spec; 248 } 249 if (*spec != ')') 250 goto baddev; 251 252 switch(i) { 253 case 3: 254 *count = atoi(args[0]); 255 *lun = atoi(args[1]); 256 *part = atoi(args[2]); 257 break; 258 case 2: 259 *lun = atoi(args[0]); 260 *part = atoi(args[1]); 261 break; 262 case 1: 263 *part = atoi(args[0]); 264 break; 265 case 0: 266 break; 267 } 268 } 269 else 270 goto baddev; 271 272 return 0; 273 274 baddev: 275 return ENXIO; 276 } 277 278 static int 279 atoi(s) 280 const char *s; 281 { 282 int val = 0; 283 284 while(isdigit(*s)) 285 val = val * 10 + (*s++ - '0'); 286 return val; 287 } 288
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