1 /* $NetBSD: autoconf.c,v 1.3 2002/09/27 02:24:13 thorpej Exp $ */ 2 3 /* 4 * Copyright 2002 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Simon Burge for Wasabi Systems, Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed for the NetBSD Project by 20 * Wasabi Systems, Inc. 21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 * or promote products derived from this software without specific prior 23 * written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38 #include <sys/param.h> 39 #include <sys/systm.h> 40 #include <sys/buf.h> 41 #include <sys/conf.h> 42 #include <sys/device.h> 43 44 #include <machine/cpu.h> 45 46 struct device *booted_device; 47 int booted_partition; 48 49 static void findroot(void); 50 51 void 52 cpu_configure() 53 { 54 55 intr_init(); 56 57 /* Kick off autoconfiguration. */ 58 (void)splhigh(); 59 if (config_rootfound("mainbus", "mainbus") == NULL) 60 panic("no mainbus found"); 61 (void)spl0(); 62 } 63 64 void 65 cpu_rootconf() 66 { 67 findroot(); 68 69 printf("boot device: %s\n", 70 booted_device ? booted_device->dv_xname : "<unknown>"); 71 72 setroot(booted_device, booted_partition); 73 } 74 75 extern char bootstring[]; 76 extern int netboot; 77 78 static void 79 findroot(void) 80 { 81 struct device *dv; 82 83 if (booted_device) 84 return; 85 86 if ((booted_device == NULL) && netboot == 0) 87 for (dv = alldevs.tqh_first; dv != NULL; 88 dv = dv->dv_list.tqe_next) 89 if (dv->dv_class == DV_DISK && 90 !strcmp(dv->dv_cfdata->cf_name, "wd")) 91 booted_device = dv; 92 93 /* 94 * XXX Match up MBR boot specification with BSD disklabel for root? 95 */ 96 booted_partition = 0; 97 98 return; 99 } 100 101 void 102 device_register(dev, aux) 103 struct device *dev; 104 void *aux; 105 { 106 if ((booted_device == NULL) && (netboot == 1)) 107 if (dev->dv_class == DV_IFNET) 108 booted_device = dev; 109 } 110