1 /* $NetBSD: autoconf.c,v 1.7 1999/09/17 20:04:44 thorpej 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 70 struct device *booted_device; /* boot device */ 71 72 void mainbus_attach __P((struct device *, struct device *, void *)); 73 int mainbus_match __P((struct device *, struct cfdata *, void *)); 74 int mainbus_print __P((void *, const char *)); 75 76 struct mainbus_softc { 77 struct device sc_dev; 78 }; 79 80 struct cfattach mainbus_ca = { 81 sizeof(struct mainbus_softc), mainbus_match, mainbus_attach 82 }; 83 84 #if 0 85 struct cfdriver mainbus_cd = { 86 NULL, "mainbus", DV_DULL, 0 87 }; 88 #endif 89 90 static char *mainbusdevs[] = { 91 "intio", 92 "nextdisplay", 93 NULL 94 }; 95 96 int 97 mainbus_match(parent, cf, args) 98 struct device *parent; 99 struct cfdata *cf; 100 void *args; 101 { 102 static int mainbus_matched; 103 104 if (mainbus_matched) 105 return (0); 106 107 return ((mainbus_matched = 1)); 108 } 109 110 void 111 mainbus_attach(parent, self, args) 112 struct device *parent, *self; 113 void *args; 114 { 115 char **devices; 116 int i; 117 118 printf("\n"); 119 120 /* 121 * Attach children. 122 */ 123 devices = mainbusdevs; 124 125 for (i = 0; devices[i] != NULL; ++i) 126 (void)config_found(self, devices[i], mainbus_print); 127 } 128 129 int 130 mainbus_print(aux, cp) 131 void *aux; 132 const char *cp; 133 { 134 char *devname = aux; 135 136 if (cp) 137 printf("%s at %s\n", devname, cp); 138 139 return (UNCONF); 140 } 141 142 /* 143 * Determine mass storage and memory configuration for a machine. 144 */ 145 void 146 cpu_configure() 147 { 148 149 booted_device = NULL; /* set by device drivers (if found) */ 150 151 INTR_SETMASK(0); 152 153 init_sir(); 154 155 if (config_rootfound("mainbus", NULL) == NULL) 156 panic("autoconfig failed, no root"); 157 158 /* Turn on interrupts */ 159 spl0(); 160 } 161 162 void 163 cpu_rootconf() 164 { 165 166 printf("boot device: %s\n", 167 (booted_device) ? booted_device->dv_xname : "<unknown>"); 168 169 setroot(booted_device, 0); 170 } 171 172 #if 0 /* @@@ Does anything use this? Is it a required interface? */ 173 /* 174 * find a device matching "name" and unit number 175 */ 176 struct device * 177 getdevunit(name, unit) 178 char *name; 179 int unit; 180 { 181 struct device *dev = alldevs.tqh_first; 182 char num[10], fullname[16]; 183 int lunit; 184 185 /* compute length of name and decimal expansion of unit number */ 186 sprintf(num, "%d", unit); 187 lunit = strlen(num); 188 if (strlen(name) + lunit >= sizeof(fullname) - 1) 189 panic("config_attach: device name too long"); 190 191 strcpy(fullname, name); 192 strcat(fullname, num); 193 194 while (strcmp(dev->dv_xname, fullname) != 0) { 195 if ((dev = dev->dv_list.tqe_next) == NULL) 196 return NULL; 197 } 198 return dev; 199 } 200 201 #endif 202