1 /* $NetBSD: autoconf.c,v 1.27 2012/10/27 17:18:07 chs 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. Available 45 * devices are determined (from possibilities mentioned in ioconf.c), 46 * and the drivers are initialized. 47 */ 48 49 #include <sys/cdefs.h> 50 __KERNEL_RCSID(0, "$NetBSD: autoconf.c,v 1.27 2012/10/27 17:18:07 chs Exp $"); 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/autoconf.h> 61 #include <machine/disklabel.h> 62 #include <machine/cpu.h> 63 #include <machine/pte.h> 64 65 #include <next68k/next68k/isr.h> 66 #include <next68k/next68k/nextrom.h> 67 68 #include <next68k/dev/intiovar.h> 69 70 volatile u_long *intrstat; 71 volatile u_long *intrmask; 72 73 static device_t getdevunit(const char *, int); 74 static int devidentparse(const char *, int *, int *, int *); 75 static int atoi(const char *); 76 77 struct device_equiv { 78 const char *alias; 79 const char *real; 80 }; 81 static struct device_equiv device_equiv[] = { 82 { "en", "xe" }, 83 { "tp", "xe" }, 84 }; 85 static int ndevice_equivs = (sizeof(device_equiv)/sizeof(device_equiv[0])); 86 87 /* 88 * Determine mass storage and memory configuration for a machine. 89 */ 90 void 91 cpu_configure(void) 92 { 93 /* int dma_rev; */ 94 extern u_int rom_intrmask; 95 extern u_int rom_intrstat; 96 97 booted_device = NULL; /* set by device drivers (if found) */ 98 99 /* Initialize the interrupt handlers. */ 100 isrinit(); 101 102 #if 0 103 dma_rev = ((volatile u_char *)IIOV(NEXT_P_SCR1))[1]; 104 switch (dma_rev) { 105 case 0: 106 intrmask = (volatile u_long *)IIOV(NEXT_P_INTRMASK_0); 107 intrstat = (volatile u_long *)IIOV(NEXT_P_INTRSTAT_0); 108 /* dspreg = (volatile u_long *)IIOV(0x2007000); */ 109 break; 110 case 1: 111 intrmask = (volatile u_long *)IIOV(NEXT_P_INTRMASK); 112 intrstat = (volatile u_long *)IIOV(NEXT_P_INTRSTAT); 113 /* dspreg = (volatile u_long *)IIOV(0x2108000); */ 114 break; 115 default: 116 panic("unknown DMA chip revision"); 117 } 118 #else 119 intrmask = (volatile u_long *)IIOV(rom_intrmask); 120 intrstat = (volatile u_long *)IIOV(rom_intrstat); 121 printf ("intrmask: %p\n", intrmask); 122 printf ("intrstat: %p\n", intrstat); 123 #endif 124 125 INTR_SETMASK(0); 126 127 if (config_rootfound("mainbus", NULL) == NULL) 128 panic("autoconfig failed, no root"); 129 130 /* Turn on interrupts */ 131 spl0(); 132 } 133 134 void 135 cpu_rootconf(void) 136 { 137 int count, lun, part; 138 139 count = lun = part = 0; 140 141 devidentparse (rom_boot_info, &count, &lun, &part); 142 booted_device = getdevunit (rom_boot_dev, count); 143 144 printf("boot device: %s\n", 145 (booted_device) ? device_xname(booted_device) : "<unknown>"); 146 147 rootconf(); 148 } 149 150 /* 151 * find a device matching "name" and unit number 152 */ 153 static device_t 154 getdevunit(const char *name, int unit) 155 { 156 int i; 157 158 for (i = 0; i < ndevice_equivs; i++) 159 if (device_equiv->alias && strcmp (name, device_equiv->alias) == 0) 160 name = device_equiv->real; 161 162 return device_find_by_driver_unit(name, unit); 163 } 164 165 /* 166 * Parse a device ident. 167 * 168 * Format: 169 * (count, lun, part) 170 */ 171 static int 172 devidentparse(const char *spec, int *count, int *lun, int *part) 173 { 174 int i; 175 const char *args[3]; 176 177 if (*spec == '(') { 178 /* tokenize device ident */ 179 args[0] = ++spec; 180 for (i = 1; *spec && *spec != ')' && i<3; spec++) { 181 if (*spec == ',') 182 args[i++] = ++spec; 183 } 184 if (*spec != ')') 185 goto baddev; 186 187 switch(i) { 188 case 3: 189 *count = atoi(args[0]); 190 *lun = atoi(args[1]); 191 *part = atoi(args[2]); 192 break; 193 case 2: 194 *lun = atoi(args[0]); 195 *part = atoi(args[1]); 196 break; 197 case 1: 198 *part = atoi(args[0]); 199 break; 200 case 0: 201 break; 202 } 203 } 204 else 205 goto baddev; 206 207 return 0; 208 209 baddev: 210 return ENXIO; 211 } 212 213 static int 214 atoi(const char *s) 215 { 216 int val = 0; 217 218 while(isdigit(*s)) 219 val = val * 10 + (*s++ - '0'); 220 return val; 221 } 222