1 /* $NetBSD: autoconf.c,v 1.2 2001/09/05 16:17:36 matt Exp $ */ 2 3 /* 4 * Copyright (c) 1994-1998 Mark Brinicombe. 5 * Copyright (c) 1994 Brini. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Mark Brinicombe for 19 * the NetBSD project. 20 * 4. The name of the company nor the name of the author may be used to 21 * endorse or promote products derived from this software without specific 22 * prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 25 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 26 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 27 * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 28 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 29 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 30 * 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 * RiscBSD kernel project 37 * 38 * autoconf.c 39 * 40 * Autoconfiguration functions 41 */ 42 43 #include "opt_md.h" 44 45 #include <sys/param.h> 46 #include <sys/systm.h> 47 #include <sys/reboot.h> 48 #include <sys/disklabel.h> 49 #include <sys/device.h> 50 #include <sys/conf.h> 51 #include <sys/kernel.h> 52 #include <sys/malloc.h> 53 #include <machine/bootconfig.h> 54 #include <machine/intr.h> 55 56 #include "isa.h" 57 58 struct device *booted_device; 59 int booted_partition; 60 61 void isa_intr_init (void); 62 63 static void get_device __P((char *name)); 64 static void set_root_device __P((void)); 65 66 /* Decode a device name to a major and minor number */ 67 68 static void 69 get_device(name) 70 char *name; 71 { 72 int loop, unit, part; 73 char buf[32], *cp; 74 struct device *dv; 75 76 if (strncmp(name, "/dev/", 5) == 0) 77 name += 5; 78 79 for (loop = 0; dev_name2blk[loop].d_name != NULL; ++loop) { 80 if (strncmp(name, dev_name2blk[loop].d_name, 81 strlen(dev_name2blk[loop].d_name)) == 0) { 82 name += strlen(dev_name2blk[loop].d_name); 83 unit = part = 0; 84 85 cp = name; 86 while (*cp >= '0' && *cp <= '9') 87 unit = (unit * 10) + (*cp++ - '0'); 88 if (cp == name) 89 return; 90 91 if (*cp >= 'a' && *cp <= ('a' + MAXPARTITIONS)) 92 part = *cp - 'a'; 93 else if (*cp != '\0' && *cp != ' ') 94 return; 95 sprintf(buf, "%s%d", dev_name2blk[loop].d_name, unit); 96 for (dv = alldevs.tqh_first; dv != NULL; 97 dv = dv->dv_list.tqe_next) { 98 if (strcmp(buf, dv->dv_xname) == 0) { 99 booted_device = dv; 100 booted_partition = part; 101 return; 102 } 103 } 104 } 105 } 106 } 107 108 static void 109 set_root_device() 110 { 111 char *ptr; 112 113 if (boot_file) 114 get_device(boot_file); 115 if (boot_args && 116 get_bootconf_option(boot_args, "root", BOOTOPT_TYPE_STRING, &ptr)) 117 get_device(ptr); 118 } 119 120 /* 121 * Set up the root device from the boot args 122 */ 123 void 124 cpu_rootconf(void) 125 { 126 set_root_device(); 127 printf("boot device: %s\n", 128 booted_device != NULL ? booted_device->dv_xname : "<unknown>"); 129 setroot(booted_device, booted_partition); 130 } 131 132 133 /* 134 * void cpu_configure() 135 * 136 * Configure all the root devices 137 * The root devices are expected to configure their own children 138 */ 139 void 140 cpu_configure(void) 141 { 142 /* 143 * Since various PCI interrupts could be routed via the ICU 144 * (for PCI devices in the bridge) we need to set up the ICU 145 * now so that these interrupts can be established correctly 146 * i.e. This is a hack. 147 */ 148 isa_intr_init(); 149 150 config_rootfound("mainbus", NULL); 151 152 /* Debugging information */ 153 #ifndef TERSE 154 printf("ipl_bio=%08x ipl_net=%08x ipl_tty=%08x ipl_imp=%08x\n", 155 irqmasks[IPL_BIO], irqmasks[IPL_NET], irqmasks[IPL_TTY], 156 irqmasks[IPL_IMP]); 157 printf("ipl_audio=%08x ipl_imp=%08x ipl_high=%08x ipl_serial=%08x\n", 158 irqmasks[IPL_AUDIO], irqmasks[IPL_CLOCK], irqmasks[IPL_HIGH], 159 irqmasks[IPL_SERIAL]); 160 #endif 161 162 /* Time to start taking interrupts so lets open the flood gates .... */ 163 (void)spl0(); 164 } 165 166 void 167 device_register(struct device *dev, void *aux) 168 { 169 } 170 /* End of autoconf.c */ 171