1 /* $NetBSD: autoconf.c,v 1.11 2002/09/27 02:24:22 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 2000 Soren S. Jorvang 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed for the 18 * NetBSD Project. See http://www.netbsd.org/ for 19 * information about NetBSD. 20 * 4. The name of the author may not be used to endorse or promote products 21 * derived from this software without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 24 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 25 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 26 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 27 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 28 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 29 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 32 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35 #include "opt_ddb.h" 36 37 #include <sys/param.h> 38 #include <sys/systm.h> 39 #include <sys/buf.h> 40 #include <sys/conf.h> 41 #include <sys/device.h> 42 43 #include <machine/cpu.h> 44 #include <machine/sysconf.h> 45 #include <machine/machtype.h> 46 #include <machine/autoconf.h> 47 48 #include <dev/scsipi/scsi_all.h> 49 #include <dev/scsipi/scsipi_all.h> 50 #include <dev/scsipi/scsiconf.h> 51 52 struct device *booted_device = NULL; 53 static struct device *booted_controller = NULL; 54 static int booted_slot, booted_unit, booted_partition; 55 static char *booted_protocol = NULL; 56 57 extern struct platform platform; 58 59 void 60 cpu_configure() 61 { 62 int s; 63 64 softintr_init(); 65 66 s = splhigh(); 67 if (config_rootfound("mainbus", "mainbus") == NULL) 68 panic("no mainbus found"); 69 70 /* 71 * Clear latched bus error registers which may have been 72 * caused by probes for non-existent devices. 73 */ 74 (*platform.bus_reset)(); 75 76 printf("biomask %02x netmask %02x ttymask %02x clockmask %02x\n", 77 biomask >> 8, netmask >> 8, ttymask >> 8, clockmask >> 8); 78 79 _splnone(); 80 } 81 82 /* 83 * Look at the string 'cp' and decode the boot device. Boot names 84 * can be something like 'bootp(0)netbsd' or 85 * 'scsi(0)disk(1)rdisk(0)partition(0)netbsd' or 86 * 'dksc(0,1,0)netbsd' 87 */ 88 void 89 makebootdev(cp) 90 char *cp; 91 { 92 if (booted_protocol != NULL) 93 return; 94 95 booted_slot = booted_unit = booted_partition = 0; 96 97 if (strncmp(cp, "scsi(", 5) == NULL) { 98 cp += 5; 99 if (*cp >= '0' && *cp <= '9') 100 booted_slot = *cp++ - '0'; 101 if (strncmp(cp, ")disk(", 6) == NULL) { 102 cp += 6; 103 if (*cp >= '0' && *cp <= '9') 104 booted_unit = *cp++ - '0'; 105 } 106 /* XXX can rdisk() ever be other than 0? */ 107 if (strncmp(cp, ")rdisk(0)partition(", 19) == NULL) { 108 cp += 19; 109 while (*cp >= '0' && *cp <= '9') 110 booted_partition = 111 booted_partition * 10 + *cp++ - '0'; 112 } 113 if (*cp != ')') 114 return; /* XXX ? */ 115 booted_protocol = "SCSI"; 116 return; 117 } 118 if (strncmp(cp, "dksc(", 5) == NULL) { 119 cp += 5; 120 if (*cp >= '0' && *cp <= '9') 121 booted_slot = *cp++ - '0'; 122 if (*cp == ',') { 123 ++cp; 124 if (*cp >= '0' || *cp <= '9') 125 booted_unit = *cp++ - '0'; 126 if (*cp == ',') { 127 ++cp; 128 if (*cp >= '0' && *cp <= '9') 129 booted_partition = *cp++ - '0'; 130 } 131 } 132 if (*cp != ')') 133 return; /* XXX ??? */ 134 booted_protocol = "SCSI"; 135 return; 136 } 137 if (strncmp(cp, "bootp(", 6) == 0) { 138 /* XXX controller number? Needed to 139 handle > 1 network controller */ 140 booted_protocol = "BOOTP"; 141 return; 142 } 143 } 144 145 void 146 cpu_rootconf() 147 { 148 printf("boot device: %s\n", 149 booted_device ? booted_device->dv_xname : "<unknown>"); 150 151 setroot(booted_device, booted_partition); 152 } 153 154 /* 155 * Try to determine the boot device. 156 */ 157 void 158 device_register(dev, aux) 159 struct device *dev; 160 void *aux; 161 { 162 static int found, initted, scsiboot, netboot; 163 struct device *parent = dev->dv_parent; 164 struct cfdata *cf = dev->dv_cfdata; 165 const char *name = cf->cf_name; 166 167 if (found) 168 return; 169 170 if (!initted && booted_protocol) { 171 scsiboot = strcmp(booted_protocol, "SCSI") == 0; 172 netboot = (strcmp(booted_protocol, "BOOTP") == 0); 173 initted = 1; 174 } 175 176 /* 177 * Check for WDC controller 178 */ 179 if (scsiboot && strcmp(name, "wdsc") == 0) { 180 /* 181 * XXX: this fails if the controllers were attached 182 * in an order other than the ARCS-imposed order. 183 */ 184 if (dev->dv_unit == booted_slot) 185 booted_controller = dev; 186 return; 187 } 188 189 /* 190 * Other SCSI controllers ?? 191 */ 192 193 /* 194 * If we found the boot controller, if check disk/tape/cdrom device 195 * on that controller matches. 196 */ 197 if (booted_controller && (strcmp(name, "sd") == 0 || 198 strcmp(name, "st") == 0 || 199 strcmp(name, "cd") == 0)) { 200 struct scsipibus_attach_args *sa = aux; 201 202 if (parent->dv_parent != booted_controller) 203 return; 204 if (booted_unit != sa->sa_periph->periph_target) 205 return; 206 booted_device = dev; 207 found = 1; 208 return; 209 } 210 211 /* 212 * Check if netboot device. 213 */ 214 if (netboot && strcmp(name, "sq") == 0) { 215 /* XXX Check unit number? (Which we don't parse yet) */ 216 booted_device = dev; 217 found = 1; 218 return; 219 } 220 } 221