autoconf.c revision 1.22
1 /* $NetBSD: autoconf.c,v 1.22 1997/04/07 06:09:00 cgd 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/param.h> 48 #include <sys/systm.h> 49 #include <sys/buf.h> 50 #include <sys/disklabel.h> 51 #include <sys/reboot.h> 52 #include <sys/device.h> 53 #include <dev/cons.h> 54 55 #include <machine/autoconf.h> 56 #include <machine/prom.h> 57 #include <machine/conf.h> 58 59 struct device *booted_device; 60 int booted_partition; 61 struct bootdev_data *bootdev_data; 62 char boot_dev[128]; 63 64 void parse_prom_bootdev __P((void)); 65 int atoi __P((char *)); 66 67 struct devnametobdevmaj alpha_nam2blk[] = { 68 { "st", 2 }, 69 { "cd", 3 }, 70 { "md", 6 }, 71 { "sd", 8 }, 72 { "fd", 0 }, 73 { "wd", 4 }, 74 { NULL, 0 }, 75 }; 76 77 /* 78 * configure: 79 * called at boot time, configure all devices on system 80 */ 81 void 82 configure() 83 { 84 85 parse_prom_bootdev(); 86 87 (void)splhigh(); 88 if (config_rootfound("mainbus", "mainbus") == NULL) 89 panic("no mainbus found"); 90 (void)spl0(); 91 cold = 0; 92 } 93 94 void 95 cpu_rootconf() 96 { 97 98 if (booted_device == NULL) 99 printf("WARNING: can't figure what device matches \"%s\"\n", 100 boot_dev); 101 setroot(booted_device, booted_partition, alpha_nam2blk); 102 } 103 104 void 105 parse_prom_bootdev() 106 { 107 static char hacked_boot_dev[128]; 108 static struct bootdev_data bd; 109 char *cp, *scp, *boot_fields[8]; 110 int i, done; 111 112 booted_device = NULL; 113 booted_partition = 0; 114 bootdev_data = NULL; 115 116 prom_getenv(PROM_E_BOOTED_DEV, boot_dev, sizeof(boot_dev)); 117 bcopy(boot_dev, hacked_boot_dev, sizeof hacked_boot_dev); 118 #if 0 119 printf("parse_prom_bootdev: boot dev = \"%s\"\n", boot_dev); 120 #endif 121 122 i = 0; 123 scp = cp = hacked_boot_dev; 124 for (done = 0; !done; cp++) { 125 if (*cp != ' ' && *cp != '\0') 126 continue; 127 if (*cp == '\0') 128 done = 1; 129 130 *cp = '\0'; 131 boot_fields[i++] = scp; 132 scp = cp + 1; 133 if (i == 8) 134 done = 1; 135 } 136 if (i != 8) 137 return; /* doesn't look like anything we know! */ 138 139 #if 0 140 printf("i = %d, done = %d\n", i, done); 141 for (i--; i >= 0; i--) 142 printf("%d = %s\n", i, boot_fields[i]); 143 #endif 144 145 bd.protocol = boot_fields[0]; 146 bd.bus = atoi(boot_fields[1]); 147 bd.slot = atoi(boot_fields[2]); 148 bd.channel = atoi(boot_fields[3]); 149 bd.remote_address = boot_fields[4]; 150 bd.unit = atoi(boot_fields[5]); 151 bd.boot_dev_type = atoi(boot_fields[6]); 152 bd.ctrl_dev_type = boot_fields[7]; 153 154 #if 0 155 printf("parsed: proto = %s, bus = %d, slot = %d, channel = %d,\n", 156 bd.protocol, bd.bus, bd.slot, bd.channel); 157 printf("\tremote = %s, unit = %d, dev_type = %d, ctrl_type = %s\n", 158 bd.remote_address, bd.unit, bd.boot_dev_type, bd.ctrl_dev_type); 159 #endif 160 161 bootdev_data = &bd; 162 } 163 164 int 165 atoi(s) 166 char *s; 167 { 168 int n, neg; 169 170 n = 0; 171 neg = 0; 172 173 while (*s == '-') { 174 s++; 175 neg = !neg; 176 } 177 178 while (*s != '\0') { 179 if (*s < '0' && *s > '9') 180 break; 181 182 n = (10 * n) + (*s - '0'); 183 s++; 184 } 185 186 return (neg ? -n : n); 187 } 188 189 void 190 device_register(dev, aux) 191 struct device *dev; 192 void *aux; 193 { 194 extern const struct cpusw *cpu_fn_switch; 195 196 if (bootdev_data == NULL) { 197 /* 198 * There is no hope. 199 */ 200 201 return; 202 } 203 204 (*cpu_fn_switch->device_register)(dev, aux); 205 } 206
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