1 /* $NetBSD: autoconf.c,v 1.39 2002/09/06 13:18:43 gehenna Exp $ */ 2 3 /* 4 * Copyright (c) 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This software was developed by the Computer Systems Engineering group 8 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 9 * contributed to Berkeley. 10 * 11 * All advertising materials mentioning features or use of this software 12 * must display the following acknowledgement: 13 * This product includes software developed by the University of 14 * California, Lawrence Berkeley Laboratory. 15 * 16 * Redistribution and use in source and binary forms, with or without 17 * modification, are permitted provided that the following conditions 18 * are met: 19 * 1. Redistributions of source code must retain the above copyright 20 * notice, this list of conditions and the following disclaimer. 21 * 2. Redistributions in binary form must reproduce the above copyright 22 * notice, this list of conditions and the following disclaimer in the 23 * documentation and/or other materials provided with the distribution. 24 * 3. All advertising materials mentioning features or use of this software 25 * must display the following acknowledgement: 26 * This product includes software developed by the University of 27 * California, Berkeley and its contributors. 28 * 4. Neither the name of the University nor the names of its contributors 29 * may be used to endorse or promote products derived from this software 30 * without specific prior written permission. 31 * 32 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 33 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 34 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 35 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 36 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 37 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 38 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 39 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 40 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 41 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 42 * SUCH DAMAGE. 43 * 44 * @(#)autoconf.c 8.4 (Berkeley) 10/1/93 45 */ 46 47 #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */ 48 49 __KERNEL_RCSID(0, "$NetBSD: autoconf.c,v 1.39 2002/09/06 13:18:43 gehenna Exp $"); 50 51 #include <sys/param.h> 52 #include <sys/systm.h> 53 #include <sys/buf.h> 54 #include <sys/disklabel.h> 55 #include <sys/reboot.h> 56 #include <sys/device.h> 57 #include <sys/conf.h> 58 #include <dev/cons.h> 59 60 #include <machine/autoconf.h> 61 #include <machine/alpha.h> 62 #include <machine/cpu.h> 63 #include <machine/prom.h> 64 #include <machine/cpuconf.h> 65 #include <machine/intr.h> 66 67 struct device *booted_device; 68 int booted_partition; 69 struct bootdev_data *bootdev_data; 70 71 void parse_prom_bootdev __P((void)); 72 int atoi __P((char *)); 73 74 /* 75 * cpu_configure: 76 * called at boot time, configure all devices on system 77 */ 78 void 79 cpu_configure() 80 { 81 82 parse_prom_bootdev(); 83 softintr_init(); 84 85 /* 86 * Disable interrupts during autoconfiguration. splhigh() won't 87 * work, because it simply _raises_ the IPL, so if machine checks 88 * are disabled, they'll stay disabled. Machine checks are needed 89 * during autoconfig. 90 */ 91 (void)alpha_pal_swpipl(ALPHA_PSL_IPL_HIGH); 92 if (config_rootfound("mainbus", "mainbus") == NULL) 93 panic("no mainbus found"); 94 (void)spl0(); 95 96 /* 97 * Note that bootstrapping is finished, and set the HWRPB up 98 * to do restarts. 99 */ 100 hwrpb_restart_setup(); 101 } 102 103 void 104 cpu_rootconf() 105 { 106 107 if (booted_device == NULL) 108 printf("WARNING: can't figure what device matches \"%s\"\n", 109 bootinfo.booted_dev); 110 setroot(booted_device, booted_partition); 111 } 112 113 void 114 parse_prom_bootdev() 115 { 116 static char hacked_boot_dev[128]; 117 static struct bootdev_data bd; 118 char *cp, *scp, *boot_fields[8]; 119 int i, done; 120 121 booted_device = NULL; 122 booted_partition = 0; 123 bootdev_data = NULL; 124 125 memcpy(hacked_boot_dev, bootinfo.booted_dev, 126 min(sizeof bootinfo.booted_dev, sizeof hacked_boot_dev)); 127 #if 0 128 printf("parse_prom_bootdev: boot dev = \"%s\"\n", hacked_boot_dev); 129 #endif 130 131 i = 0; 132 scp = cp = hacked_boot_dev; 133 for (done = 0; !done; cp++) { 134 if (*cp != ' ' && *cp != '\0') 135 continue; 136 if (*cp == '\0') 137 done = 1; 138 139 *cp = '\0'; 140 boot_fields[i++] = scp; 141 scp = cp + 1; 142 if (i == 8) 143 done = 1; 144 } 145 if (i != 8) 146 return; /* doesn't look like anything we know! */ 147 148 #if 0 149 printf("i = %d, done = %d\n", i, done); 150 for (i--; i >= 0; i--) 151 printf("%d = %s\n", i, boot_fields[i]); 152 #endif 153 154 bd.protocol = boot_fields[0]; 155 bd.bus = atoi(boot_fields[1]); 156 bd.slot = atoi(boot_fields[2]); 157 bd.channel = atoi(boot_fields[3]); 158 bd.remote_address = boot_fields[4]; 159 bd.unit = atoi(boot_fields[5]); 160 bd.boot_dev_type = atoi(boot_fields[6]); 161 bd.ctrl_dev_type = boot_fields[7]; 162 163 #if 0 164 printf("parsed: proto = %s, bus = %d, slot = %d, channel = %d,\n", 165 bd.protocol, bd.bus, bd.slot, bd.channel); 166 printf("\tremote = %s, unit = %d, dev_type = %d, ctrl_type = %s\n", 167 bd.remote_address, bd.unit, bd.boot_dev_type, bd.ctrl_dev_type); 168 #endif 169 170 bootdev_data = &bd; 171 } 172 173 int 174 atoi(s) 175 char *s; 176 { 177 int n, neg; 178 179 n = 0; 180 neg = 0; 181 182 while (*s == '-') { 183 s++; 184 neg = !neg; 185 } 186 187 while (*s != '\0') { 188 if (*s < '0' && *s > '9') 189 break; 190 191 n = (10 * n) + (*s - '0'); 192 s++; 193 } 194 195 return (neg ? -n : n); 196 } 197 198 void 199 device_register(dev, aux) 200 struct device *dev; 201 void *aux; 202 { 203 if (bootdev_data == NULL) { 204 /* 205 * There is no hope. 206 */ 207 return; 208 } 209 if (platform.device_register) 210 (*platform.device_register)(dev, aux); 211 } 212