1 /* $NetBSD: autoconf.c,v 1.49 2026/01/10 21:35:12 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 1988 University of Utah. 5 * Copyright (c) 1982, 1986, 1990, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * the Systems Programming Group of the University of Utah Computer 10 * Science Department. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * from: Utah $Hdr: autoconf.c 1.36 92/12/20$ 37 * 38 * @(#)autoconf.c 8.2 (Berkeley) 1/12/94 39 */ 40 41 /* 42 * Setup the system to run on the current machine. 43 * 44 * Configure() is called at boot time. 45 */ 46 47 #include <sys/cdefs.h> 48 __KERNEL_RCSID(0, "$NetBSD: autoconf.c,v 1.49 2026/01/10 21:35:12 thorpej Exp $"); 49 50 #include "opt_mvmeconf.h" 51 52 #include <sys/param.h> 53 #include <sys/systm.h> 54 #include <sys/buf.h> 55 #include <sys/conf.h> 56 #include <sys/reboot.h> 57 #include <sys/device.h> 58 59 #include <machine/vmparam.h> 60 #include <machine/disklabel.h> 61 #include <machine/cpu.h> 62 #include <machine/autoconf.h> 63 #include <machine/pte.h> 64 65 #include <dev/scsipi/scsi_all.h> 66 #include <dev/scsipi/scsipi_all.h> 67 #include <dev/scsipi/scsiconf.h> 68 69 #include <mvme68k/mvme68k/isr.h> 70 71 #ifdef MVME147 72 #include <mvme68k/dev/pccreg.h> 73 #endif 74 #if defined(MVME162) || defined(MVME167) || defined(MVME172) || defined(MVME177) 75 #include <dev/mvme/pcctworeg.h> 76 #endif 77 78 79 /* 80 * Determine mass storage and memory configuration for a machine. 81 */ 82 void 83 cpu_configure(void) 84 { 85 86 booted_device = NULL; /* set by device drivers (if found) */ 87 88 /* Initialise interrupt handlers */ 89 isrinit(); 90 91 if (config_rootfound("mainbus", NULL) == NULL) 92 panic("autoconfig failed, no root"); 93 } 94 95 void 96 cpu_rootconf(void) 97 { 98 99 printf("boot device: %s", 100 (booted_device) ? device_xname(booted_device) : "<unknown>"); 101 102 if (bootpart) 103 printf(" (partition %d)\n", bootpart); 104 else 105 printf("\n"); 106 107 booted_partition = bootpart; 108 rootconf(); 109 } 110 111 void 112 device_register(device_t dev, void *aux) 113 { 114 static device_t controller; 115 device_t parent = device_parent(dev); 116 117 if (booted_device) 118 return; 119 120 if (controller == NULL && parent) { 121 switch (machineid) { 122 #ifdef MVME147 123 case MVME_147: 124 /* 125 * We currently only support booting from the 147's 126 * onboard scsi and ethernet. So ensure this 127 * device's parent is the PCC driver. 128 */ 129 if (!device_is_a(parent, "pcc")) 130 return; 131 132 if (bootaddr == PCC_PADDR(PCC_WDSC_OFF) && 133 device_is_a(dev, "wdsc")) { 134 controller = dev; 135 return; 136 } 137 138 if (bootaddr == PCC_PADDR(PCC_LE_OFF) && 139 device_is_a(dev, "le")) { 140 booted_device = dev; 141 return; 142 } 143 144 break; 145 #endif /* MVME_147 */ 146 147 #if defined(MVME162) || defined(MVME167) || defined(MVME172) || defined(MVME177) 148 case MVME_162: 149 case MVME_167: 150 case MVME_172: 151 case MVME_177: 152 /* 153 * We currently only support booting from the 16x and 154 * 17x onboard scsi and ethernet. So ensure this 155 * device's parent is the PCCTWO driver. 156 */ 157 if (!device_is_a(parent, "pcctwo")) 158 return; 159 160 if (bootaddr == PCCTWO_PADDR(PCCTWO_NCRSC_OFF) && 161 device_is_a(dev, "osiop")) { 162 controller = dev; 163 return; 164 } 165 166 if (bootaddr == PCCTWO_PADDR(PCCTWO_IE_OFF) && 167 device_is_a(dev, "ie")) { 168 booted_device = dev; 169 return; 170 } 171 172 break; 173 #endif /* MVME_162 || MVME_167 || MVME_172 || MVME_177 */ 174 175 default: 176 break; 177 } 178 179 return; 180 } 181 182 /* 183 * Find out which device on the scsibus we booted from 184 */ 185 if (device_is_a(dev, "sd") || 186 device_is_a(dev, "cd") || 187 device_is_a(dev, "st")) { 188 struct scsipibus_attach_args *sa = aux; 189 struct scsipi_periph *periph = sa->sa_periph; 190 191 if (device_parent(parent) != controller) 192 return; 193 194 /* 195 * bootdevlun is formatted like so: 196 * 197 * tttt.llll 198 * 199 * So, a disk at SCSI ID 5 would have 0x50 as the 200 * bootdevlun value. 201 * 202 * XXX True for all Bug revisions??? 203 */ 204 int targ = (bootdevlun >> 4) & 0xf; 205 /* int lun = bootdevlun & 0xf; */ 206 207 if (periph->periph_target != targ) 208 return; 209 210 /* XXX Check LUN? */ 211 212 booted_device = dev; 213 } 214 } 215
Indexes created Sun Oct 25 00:26:45 UTC 2026