1 /* $NetBSD: autoconf.c,v 1.2 1998/11/10 22:45:44 dbj 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/dmap.h> 60 #include <sys/reboot.h> 61 #include <sys/device.h> 62 63 #include <machine/vmparam.h> 64 #include <machine/autoconf.h> 65 #include <machine/disklabel.h> 66 #include <machine/cpu.h> 67 #include <machine/pte.h> 68 69 #include <next68k/next68k/isr.h> 70 71 struct device *booted_device; /* boot device */ 72 73 /* 74 * The following several variables are related to 75 * the configuration process, and are used in initializing 76 * the machine. 77 */ 78 int cold; /* if 1, still working on cold-start */ 79 80 void mainbus_attach __P((struct device *, struct device *, void *)); 81 int mainbus_match __P((struct device *, struct cfdata *, void *)); 82 int mainbus_print __P((void *, const char *)); 83 84 struct mainbus_softc { 85 struct device sc_dev; 86 }; 87 88 struct cfattach mainbus_ca = { 89 sizeof(struct mainbus_softc), mainbus_match, mainbus_attach 90 }; 91 92 #if 0 93 struct cfdriver mainbus_cd = { 94 NULL, "mainbus", DV_DULL, 0 95 }; 96 #endif 97 98 static char *mainbusdevs[] = { 99 "intio", 100 NULL 101 }; 102 103 int 104 mainbus_match(parent, cf, args) 105 struct device *parent; 106 struct cfdata *cf; 107 void *args; 108 { 109 static int mainbus_matched; 110 111 if (mainbus_matched) 112 return (0); 113 114 return ((mainbus_matched = 1)); 115 } 116 117 void 118 mainbus_attach(parent, self, args) 119 struct device *parent, *self; 120 void *args; 121 { 122 char **devices; 123 int i; 124 125 printf("\n"); 126 127 /* 128 * Attach children. 129 */ 130 devices = mainbusdevs; 131 132 for (i = 0; devices[i] != NULL; ++i) 133 (void)config_found(self, devices[i], mainbus_print); 134 } 135 136 int 137 mainbus_print(aux, cp) 138 void *aux; 139 const char *cp; 140 { 141 char *devname = aux; 142 143 if (cp) 144 printf("%s at %s\n", devname, cp); 145 146 return (UNCONF); 147 } 148 149 struct devnametobdevmaj next68k_nam2blk[] = { 150 { "sd", 4 }, 151 { "st", 5 }, 152 { "cd", 6 }, 153 { "md", 13 }, 154 { NULL, 0 }, 155 }; 156 157 /* 158 * Determine mass storage and memory configuration for a machine. 159 */ 160 void 161 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 cold = 0; 174 175 /* Turn on interrupts */ 176 spl0(); 177 } 178 179 void 180 cpu_rootconf() 181 { 182 183 printf("boot device: %s\n", 184 (booted_device) ? booted_device->dv_xname : "<unknown>"); 185 186 setroot(booted_device, 0, next68k_nam2blk); 187 } 188 189 #if 0 /* @@@ Does anything use this? Is it a required interface? */ 190 /* 191 * find a device matching "name" and unit number 192 */ 193 struct device * 194 getdevunit(name, unit) 195 char *name; 196 int unit; 197 { 198 struct device *dev = alldevs.tqh_first; 199 char num[10], fullname[16]; 200 int lunit; 201 202 /* compute length of name and decimal expansion of unit number */ 203 sprintf(num, "%d", unit); 204 lunit = strlen(num); 205 if (strlen(name) + lunit >= sizeof(fullname) - 1) 206 panic("config_attach: device name too long"); 207 208 strcpy(fullname, name); 209 strcat(fullname, num); 210 211 while (strcmp(dev->dv_xname, fullname) != 0) { 212 if ((dev = dev->dv_list.tqe_next) == NULL) 213 return NULL; 214 } 215 return dev; 216 } 217 218 #endif 219