1 /* $NetBSD: autoconf.c,v 1.15 2002/05/16 02:50:54 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 1988 University of Utah. 5 * Copyright (c) 1992, 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 and Ralph Campbell. 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. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the University of 23 * California, Berkeley and its contributors. 24 * 4. Neither the name of the University nor the names of its contributors 25 * may be used to endorse or promote products derived from this software 26 * without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 * 40 * from: Utah Hdr: autoconf.c 1.31 91/01/21 41 * 42 * @(#)autoconf.c 8.1 (Berkeley) 6/10/93 43 */ 44 45 /* 46 * Setup the system to run on the current machine. 47 * 48 * Configure() is called at boot time. Available 49 * devices are determined (from possibilities mentioned in ioconf.c), 50 * and the drivers are initialized. 51 */ 52 53 #include <sys/param.h> 54 #include <sys/systm.h> 55 #include <sys/map.h> 56 #include <sys/buf.h> 57 #include <sys/dkstat.h> 58 #include <sys/conf.h> 59 #include <sys/reboot.h> 60 #include <sys/device.h> 61 62 #include <dev/scsipi/scsi_all.h> 63 #include <dev/scsipi/scsipi_all.h> 64 #include <dev/scsipi/scsiconf.h> 65 66 #include <machine/cpu.h> 67 #include <machine/adrsmap.h> 68 #include <machine/romcall.h> 69 70 #include <newsmips/newsmips/machid.h> 71 72 /* 73 * The following several variables are related to 74 * the configuration process, and are used in initializing 75 * the machine. 76 */ 77 int cpuspeed = 10; /* approx # instr per usec. */ 78 79 struct device *booted_device; 80 int booted_partition; 81 82 static void findroot __P((void)); 83 84 /* 85 * Determine mass storage and memory configuration for a machine. 86 * Print cpu type, and then iterate over an array of devices 87 * found on the baseboard or in turbochannel option slots. 88 * Once devices are configured, enable interrupts, and probe 89 * for attached scsi devices. 90 */ 91 void 92 cpu_configure() 93 { 94 extern struct idrom idrom; 95 96 printf("SONY NET WORK STATION, Model %s, ", idrom.id_model); 97 printf("Machine ID #%d\n", idrom.id_serial); 98 99 /* 100 * Kick off autoconfiguration 101 */ 102 _splnone(); /* enable all interrupts */ 103 splhigh(); /* ...then disable device interrupts */ 104 105 if (systype == NEWS3400) { 106 *(char *)INTEN0 = INTEN0_BERR; /* only buserr occurs */ 107 *(char *)INTEN1 = 0; 108 } 109 110 if (config_rootfound("mainbus", "mainbus") == NULL) 111 panic("no mainbus found"); 112 113 /* Enable hardware interrupt registers. */ 114 enable_intr(); 115 116 /* Configuration is finished, turn on interrupts. */ 117 _splnone(); /* enable all source forcing SOFT_INTs cleared */ 118 } 119 120 void 121 cpu_rootconf() 122 { 123 findroot(); 124 125 printf("boot device: %s\n", 126 booted_device ? booted_device->dv_xname : "<unknown>"); 127 128 setroot(booted_device, booted_partition); 129 } 130 131 u_long bootdev = 0; /* should be dev_t, but not until 32 bits */ 132 133 /* 134 * Attempt to find the device from which we were booted. 135 */ 136 void 137 findroot() 138 { 139 int ctlr, unit, part, type; 140 struct device *dv; 141 142 if (BOOTDEV_MAG(bootdev) != 5) /* NEWS-OS's B_DEVMAGIC */ 143 return; 144 145 ctlr = BOOTDEV_CTLR(bootdev); /* SCSI ID */ 146 unit = BOOTDEV_UNIT(bootdev); 147 part = BOOTDEV_PART(bootdev); /* LUN */ 148 type = BOOTDEV_TYPE(bootdev); 149 150 if (type != BOOTDEV_SD) 151 return; 152 153 /* 154 * XXX assumes only one controller exists. 155 */ 156 for (dv = alldevs.tqh_first; dv; dv=dv->dv_list.tqe_next) { 157 if (strcmp(dv->dv_xname, "scsibus0") == 0) { 158 struct scsibus_softc *sdv = (void *)dv; 159 struct scsipi_periph *periph; 160 161 periph = scsipi_lookup_periph(sdv->sc_channel, 162 ctlr, 0); 163 if (periph == NULL) 164 continue; 165 166 booted_device = periph->periph_dev; 167 booted_partition = part; 168 return; 169 } 170 } 171 } 172