1/* $NetBSD$ */ 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, "$NetBSD$"); 48 49#include <sys/param.h> 50#include <sys/systm.h> 51#include <sys/buf.h> 52#include <sys/disk.h> 53#include <sys/disklabel.h> 54#include <sys/conf.h> 55#include <sys/reboot.h> 56#include <sys/device.h> 57#include <sys/malloc.h> 58#include <sys/queue.h> 59 60#include "pci.h" 61#if NPCI > 0 62#include <dev/pci/pcireg.h> 63#include <dev/pci/pcivar.h> 64#endif 65#include <dev/ata/atareg.h> 66#include <dev/ata/atavar.h> 67#include <dev/ata/wdvar.h> 68#include <dev/scsipi/sdvar.h> 69 70#include <machine/bootinfo.h> 71#include <machine/pte.h> 72#include <machine/intr.h> 73 74void genppc_cpu_configure(void); 75static void findroot(void); 76 77static int bus, target, lun, drive; 78static const char *name = NULL; 79 80/* 81 * Determine i/o configuration for a machine. 82 */ 83 84void 85cpu_configure(void) 86{ 87 88 findroot(); 89 90 if (config_rootfound("mainbus", NULL) == NULL) 91 panic("configure: mainbus not configured"); 92 93 genppc_cpu_configure(); 94} 95 96void 97cpu_rootconf(void) 98{ 99 100 aprint_normal("boot device: %s\n", 101 booted_device ? device_xname(booted_device) : "<unknown>"); 102 103 rootconf(); 104} 105 106/* 107 * Attempt to find the device from which we were booted. 108 * If we can do so, and not instructed not to do so, 109 * change rootdev to correspond to the load device. 110 */ 111static void 112findroot(void) 113{ 114 struct btinfo_rootdevice *rdev; 115 int part; 116 char *p; 117 118 rdev = (struct btinfo_rootdevice *)lookup_bootinfo(BTINFO_ROOTDEVICE); 119 if (rdev == NULL) 120 return; 121 p = rdev->rootdevice; 122 if (strncmp(p, "/dev/disk/", 10) != 0) 123 /* unknwon device... */ 124 return; 125 p += 10; 126 if (strncmp(p, "scsi/", 5) == 0) { 127 name = "sd"; 128 p += 5; 129 130 bus = 0; 131 while (isdigit(*p)) 132 bus = bus * 10 + (*p++) - '0'; 133 if (*p++ != '/') 134 return; 135 target = 0; 136 while (isdigit(*p)) 137 target = target * 10 + (*p++) - '0'; 138 if (*p++ != '/') 139 return; 140 lun = 0; 141 while (isdigit(*p)) 142 lun = lun * 10 + (*p++) - '0'; 143 } else if (strncmp(p, "ide/", 4) == 0) { 144 name = "wd"; 145 p += 4; 146 147 bus = 0; 148 while (isdigit(*p)) 149 bus = bus * 10 + (*p++) - '0'; 150 if (*p++ != '/') 151 return; 152 if (strncmp(p, "master/0", 8) == 0) { 153 drive = 0; 154 p += 8; 155 } else if (strncmp(p, "slave/0", 7) == 0) { 156 drive = 1; 157 p += 7; 158 } else 159 return; 160 } else if (strcmp(p, "floppy") == 0) 161 return; 162 else 163 /* unknwon disk... */ 164 return; 165 166 if (*p != '_' || !isdigit(*(p + 1))) 167 return; 168 p++; 169 part = 0; 170 while (isdigit(*p)) 171 part = part * 10 + (*p++) - '0'; 172 if (p != '\0') 173 return; 174 175 booted_partition = part; 176} 177 178void 179device_register(device_t dev, void *aux) 180{ 181 device_t bdev, cdev; 182 183#if NPCI > 0 184 if (device_is_a(dev, "genfb") && 185 device_is_a(device_parent(dev), "pci")) { 186 prop_dictionary_t dict = device_properties(dev); 187 struct pci_attach_args *pa = aux; 188 pcireg_t bar0; 189 uint32_t fbaddr; 190 191 bar0 = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_MAPREG_START); 192 fbaddr = PCI_MAPREG_MEM_ADDR(bar0); 193 194 prop_dictionary_set_bool(dict, "is_console", 1); 195 prop_dictionary_set_uint32(dict, "width", 640); 196 prop_dictionary_set_uint32(dict, "height", 480); 197 prop_dictionary_set_uint32(dict, "depth", 8); 198 prop_dictionary_set_uint32(dict, "address", fbaddr); 199 } 200 201 if (device_is_a(dev, "siop") && 202 device_is_a(device_parent(dev), "pci")) { 203 prop_dictionary_t dict = device_properties(dev); 204 struct pci_attach_args *pa = aux; 205 int pbus, device; 206 207 pci_decompose_tag(pa->pa_pc, pa->pa_tag, &pbus, &device, NULL); 208 if (pbus == 0 && device == 12) 209 /* Internal SCSI uses PCI clock as SCSI clock */ 210 prop_dictionary_set_bool(dict, "use_pciclock", 1); 211 } 212#endif 213 214 if (booted_device != NULL) 215 return; 216 /* 217 * Check boot device. 218 * It is sd/wd connected by the onboard controller to be supported. 219 */ 220 if (device_is_a(dev, "sd") && strcmp(name, "sd") == 0) { 221 struct scsipibus_attach_args *sa = aux; 222 223 bdev = device_parent(dev); 224 if (!device_is_a(bdev, "scsibus")) 225 return; 226 cdev = device_parent(bdev); 227 if (!device_is_a(cdev, "siop")) 228 return; 229 230 if (sa->sa_periph->periph_target == target && 231 sa->sa_periph->periph_lun == lun) 232 booted_device = dev; 233 } else if (device_is_a(dev, "wd") && strcmp(name, "wd") == 0) { 234 struct ata_device *adev = aux; 235 236 bdev = device_parent(dev); 237 if (!device_is_a(bdev, "atabus")) 238 return; 239 cdev = device_parent(bdev); 240 if (!device_is_a(cdev, "wdc")) 241 return; 242 if (!device_is_a(device_parent(cdev), "isa")) 243 return; 244 245 if (adev->adev_drv_data->drive == drive) 246 booted_device = dev; 247 } 248} 249 250