1 /* $NetBSD: autoconf.c,v 1.47 2009/03/18 07:42:36 cegger 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. 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 * @(#)autoconf.c 8.4 (Berkeley) 10/1/93 41 */ 42 43 #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */ 44 45 __KERNEL_RCSID(0, "$NetBSD: autoconf.c,v 1.47 2009/03/18 07:42:36 cegger Exp $"); 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 <sys/conf.h> 54 #include <dev/cons.h> 55 56 #include <machine/autoconf.h> 57 #include <machine/alpha.h> 58 #include <machine/cpu.h> 59 #include <machine/prom.h> 60 #include <machine/cpuconf.h> 61 #include <machine/intr.h> 62 63 struct bootdev_data *bootdev_data; 64 65 void parse_prom_bootdev(void); 66 int atoi(char *); 67 68 /* 69 * cpu_configure: 70 * called at boot time, configure all devices on system 71 */ 72 void 73 cpu_configure(void) 74 { 75 76 parse_prom_bootdev(); 77 78 /* 79 * Disable interrupts during autoconfiguration. splhigh() won't 80 * work, because it simply _raises_ the IPL, so if machine checks 81 * are disabled, they'll stay disabled. Machine checks are needed 82 * during autoconfig. 83 */ 84 (void)alpha_pal_swpipl(ALPHA_PSL_IPL_HIGH); 85 if (config_rootfound("mainbus", NULL) == NULL) 86 panic("no mainbus found"); 87 (void)spl0(); 88 89 /* 90 * Note that bootstrapping is finished, and set the HWRPB up 91 * to do restarts. 92 */ 93 hwrpb_restart_setup(); 94 } 95 96 void 97 cpu_rootconf(void) 98 { 99 100 if (booted_device == NULL) 101 printf("WARNING: can't figure what device matches \"%s\"\n", 102 bootinfo.booted_dev); 103 setroot(booted_device, booted_partition); 104 } 105 106 void 107 parse_prom_bootdev(void) 108 { 109 static char hacked_boot_dev[128]; 110 static struct bootdev_data bd; 111 char *cp, *scp, *boot_fields[8]; 112 int i, done; 113 114 booted_device = NULL; 115 booted_partition = 0; 116 bootdev_data = NULL; 117 118 memcpy(hacked_boot_dev, bootinfo.booted_dev, 119 min(sizeof bootinfo.booted_dev, sizeof hacked_boot_dev)); 120 #if 0 121 printf("parse_prom_bootdev: boot dev = \"%s\"\n", hacked_boot_dev); 122 #endif 123 124 i = 0; 125 scp = cp = hacked_boot_dev; 126 for (done = 0; !done; cp++) { 127 if (*cp != ' ' && *cp != '\0') 128 continue; 129 if (*cp == '\0') 130 done = 1; 131 132 *cp = '\0'; 133 boot_fields[i++] = scp; 134 scp = cp + 1; 135 if (i == 8) 136 done = 1; 137 } 138 if (i != 8) 139 return; /* doesn't look like anything we know! */ 140 141 #if 0 142 printf("i = %d, done = %d\n", i, done); 143 for (i--; i >= 0; i--) 144 printf("%d = %s\n", i, boot_fields[i]); 145 #endif 146 147 bd.protocol = boot_fields[0]; 148 bd.bus = atoi(boot_fields[1]); 149 bd.slot = atoi(boot_fields[2]); 150 bd.channel = atoi(boot_fields[3]); 151 bd.remote_address = boot_fields[4]; 152 bd.unit = atoi(boot_fields[5]); 153 bd.boot_dev_type = atoi(boot_fields[6]); 154 bd.ctrl_dev_type = boot_fields[7]; 155 156 #if 0 157 printf("parsed: proto = %s, bus = %d, slot = %d, channel = %d,\n", 158 bd.protocol, bd.bus, bd.slot, bd.channel); 159 printf("\tremote = %s, unit = %d, dev_type = %d, ctrl_type = %s\n", 160 bd.remote_address, bd.unit, bd.boot_dev_type, bd.ctrl_dev_type); 161 #endif 162 163 bootdev_data = &bd; 164 } 165 166 int 167 atoi(char *s) 168 { 169 int n, neg; 170 171 n = 0; 172 neg = 0; 173 174 while (*s == '-') { 175 s++; 176 neg = !neg; 177 } 178 179 while (*s != '\0') { 180 if (*s < '0' && *s > '9') 181 break; 182 183 n = (10 * n) + (*s - '0'); 184 s++; 185 } 186 187 return (neg ? -n : n); 188 } 189 190 void 191 device_register(struct device *dev, void *aux) 192 { 193 if (bootdev_data == NULL) { 194 /* 195 * There is no hope. 196 */ 197 return; 198 } 199 if (platform.device_register) 200 (*platform.device_register)(dev, aux); 201 } 202