1 /* $NetBSD: autoconf.c,v 1.5 2003/07/15 01:37:35 lukem 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. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * @(#)autoconf.c 7.1 (Berkeley) 5/9/91 39 */ 40 41 /* 42 * Setup the system to run on the current machine. 43 * 44 * Configure() is called at boot time and initializes the vba 45 * device tables and the memory controller monitoring. Available 46 * devices are determined (from possibilities mentioned in ioconf.c), 47 * and the drivers are initialized. 48 */ 49 50 #include <sys/cdefs.h> 51 __KERNEL_RCSID(0, "$NetBSD: autoconf.c,v 1.5 2003/07/15 01:37:35 lukem Exp $"); 52 53 #include <sys/param.h> 54 #include <sys/systm.h> 55 #include <sys/buf.h> 56 #include <sys/disklabel.h> 57 #include <sys/conf.h> 58 #include <sys/reboot.h> 59 #include <sys/device.h> 60 61 struct device *booted_device; 62 int booted_partition; 63 64 void findroot __P((void)); 65 66 /* 67 * Determine i/o configuration for a machine. 68 */ 69 void 70 cpu_configure() 71 { 72 extern void init_interrupt __P((void)); 73 extern void calc_delayconst __P((void)); 74 75 extintr_disable(); 76 77 init_interrupt(); 78 calc_delayconst(); 79 80 if (config_rootfound("mainbus", NULL) == NULL) 81 panic("configure: mainbus not configured"); 82 83 printf("biomask %x.%x.%x.%x netmask %x.%x.%x.%x ttymask %x.%x.%x.%x\n", 84 imask[IPL_BIO].bits[0], imask[IPL_BIO].bits[1], 85 imask[IPL_BIO].bits[2], imask[IPL_BIO].bits[3], 86 imask[IPL_NET].bits[0], imask[IPL_NET].bits[1], 87 imask[IPL_NET].bits[2], imask[IPL_NET].bits[3], 88 imask[IPL_TTY].bits[0], imask[IPL_TTY].bits[1], 89 imask[IPL_TTY].bits[2], imask[IPL_TTY].bits[3]); 90 91 curcpu()->ci_cpl = IPL_NONE; 92 extintr_enable(); 93 94 spl0(); 95 } 96 97 void 98 cpu_rootconf() 99 { 100 findroot(); 101 102 printf("boot device: %s\n", 103 booted_device ? booted_device->dv_xname : "<unknown>"); 104 105 setroot(booted_device, booted_partition); 106 } 107 108 dev_t bootdev = 0; 109 110 /* 111 * Attempt to find the device from which we were booted. 112 * If we can do so, and not instructed not to do so, 113 * change rootdev to correspond to the load device. 114 */ 115 void 116 findroot(void) 117 { 118 struct device *dv; 119 const char *name; 120 char buf[32]; 121 122 #if 0 123 printf("howto %x bootdev %x ", boothowto, bootdev); 124 #endif 125 126 if ((bootdev & B_MAGICMASK) != (u_long)B_DEVMAGIC) 127 return; 128 129 130 name = devsw_blk2name(B_TYPE(bootdev)); 131 if (name == NULL) 132 return; 133 134 sprintf(buf, "%s%d", name, B_UNIT(bootdev)); 135 TAILQ_FOREACH(dv, &alldevs, dv_list) { 136 if (strcmp(buf, dv->dv_xname) == 0) { 137 booted_device = dv; 138 booted_partition = B_PARTITION(bootdev); 139 return; 140 } 141 } 142 } 143 144 void 145 device_register(struct device *dev, void *aux) 146 { 147 } 148