1 /* $NetBSD: autoconf.c,v 1.9 2007/10/17 19:54:17 garbled Exp $ */ 2 3 /*- 4 * Copyright (c) 1990 The Regents of the University of California. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * William Jolitz. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * @(#)autoconf.c 7.1 (Berkeley) 5/9/91 35 */ 36 37 /* 38 * Setup the system to run on the current machine. 39 * 40 * Configure() is called at boot time and initializes the vba 41 * device tables and the memory controller monitoring. Available 42 * devices are determined (from possibilities mentioned in ioconf.c), 43 * and the drivers are initialized. 44 */ 45 46 #include <sys/cdefs.h> 47 __KERNEL_RCSID(0, "$NetBSD: autoconf.c,v 1.9 2007/10/17 19:54:17 garbled Exp $"); 48 49 #include <sys/param.h> 50 #include <sys/systm.h> 51 #include <sys/buf.h> 52 #include <sys/disklabel.h> 53 #include <sys/conf.h> 54 #include <sys/reboot.h> 55 #include <sys/device.h> 56 57 void findroot __P((void)); 58 59 /* 60 * Determine i/o configuration for a machine. 61 */ 62 void 63 cpu_configure() 64 { 65 extern void init_interrupt __P((void)); 66 67 extintr_disable(); 68 69 init_interrupt(); 70 71 if (config_rootfound("mainbus", NULL) == NULL) 72 panic("configure: mainbus not configured"); 73 74 printf("biomask %x.%x.%x.%x netmask %x.%x.%x.%x ttymask %x.%x.%x.%x\n", 75 imask[IPL_BIO].bits[0], imask[IPL_BIO].bits[1], 76 imask[IPL_BIO].bits[2], imask[IPL_BIO].bits[3], 77 imask[IPL_NET].bits[0], imask[IPL_NET].bits[1], 78 imask[IPL_NET].bits[2], imask[IPL_NET].bits[3], 79 imask[IPL_TTY].bits[0], imask[IPL_TTY].bits[1], 80 imask[IPL_TTY].bits[2], imask[IPL_TTY].bits[3]); 81 82 curcpu()->ci_cpl = IPL_NONE; 83 extintr_enable(); 84 85 spl0(); 86 } 87 88 void 89 cpu_rootconf() 90 { 91 findroot(); 92 93 printf("boot device: %s\n", 94 booted_device ? booted_device->dv_xname : "<unknown>"); 95 96 setroot(booted_device, booted_partition); 97 } 98 99 dev_t bootdev = 0; 100 101 /* 102 * Attempt to find the device from which we were booted. 103 * If we can do so, and not instructed not to do so, 104 * change rootdev to correspond to the load device. 105 */ 106 void 107 findroot(void) 108 { 109 struct device *dv; 110 const char *name; 111 char buf[32]; 112 113 #if 0 114 printf("howto %x bootdev %x ", boothowto, bootdev); 115 #endif 116 117 if ((bootdev & B_MAGICMASK) != (u_long)B_DEVMAGIC) 118 return; 119 120 121 name = devsw_blk2name(B_TYPE(bootdev)); 122 if (name == NULL) 123 return; 124 125 sprintf(buf, "%s%d", name, B_UNIT(bootdev)); 126 TAILQ_FOREACH(dv, &alldevs, dv_list) { 127 if (strcmp(buf, dv->dv_xname) == 0) { 128 booted_device = dv; 129 booted_partition = B_PARTITION(bootdev); 130 return; 131 } 132 } 133 } 134 135 void 136 device_register(struct device *dev, void *aux) 137 { 138 } 139