1 /* $NetBSD: autoconf.c,v 1.4 2002/09/06 13:18:43 gehenna 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 * Created : 08/10/94 43 */ 44 45 #include "opt_md.h" 46 47 #include <sys/param.h> 48 #include <sys/systm.h> 49 #include <sys/reboot.h> 50 #include <sys/disklabel.h> 51 #include <sys/device.h> 52 #include <sys/conf.h> 53 #include <sys/kernel.h> 54 #include <sys/malloc.h> 55 #include <machine/bootconfig.h> 56 #include <machine/intr.h> 57 58 59 #include "podulebus.h" 60 61 int booted_partition; 62 struct device *booted_device; 63 extern char *booted_kernel; 64 65 extern dev_t dumpdev; 66 67 void dumpconf __P((void)); 68 void isa_intr_init __P((void)); 69 70 #ifndef MEMORY_DISK_IS_ROOT 71 static void get_device __P((char *name)); 72 static void set_root_device __P((void)); 73 #endif 74 75 #ifndef MEMORY_DISK_IS_ROOT 76 /* Decode a device name to a major and minor number */ 77 78 static void 79 get_device(name) 80 char *name; 81 { 82 int unit, part; 83 char devname[16], buf[32], *cp; 84 struct device *dv; 85 86 if (strncmp(name, "/dev/", 5) == 0) 87 name += 5; 88 89 if (devsw_name2blk(name, devname, sizeof(devname)) == -1) 90 return; 91 92 name += strlen(devname); 93 unit = part = 0; 94 95 cp = name; 96 while (*cp >= '0' && *cp <= '9') 97 unit = (unit * 10) + (*cp++ - '0'); 98 if (cp == name) 99 return; 100 101 if (*cp >= 'a' && *cp <= ('a' + MAXPARTITIONS)) 102 part = *cp - 'a'; 103 else if (*cp != '\0' && *cp != ' ') 104 return; 105 sprintf(buf, "%s%d", devname, unit); 106 for (dv = alldevs.tqh_first; dv != NULL; dv = dv->dv_list.tqe_next) { 107 if (strcmp(buf, dv->dv_xname) == 0) { 108 booted_device = dv; 109 booted_partition = part; 110 return; 111 } 112 } 113 } 114 115 116 /* Set the rootdev variable from the root specifier in the boot args */ 117 118 static void 119 set_root_device() 120 { 121 char *ptr; 122 123 if (booted_kernel) 124 get_device(booted_kernel); 125 if (boot_args && 126 get_bootconf_option(boot_args, "root", BOOTOPT_TYPE_STRING, &ptr)) 127 get_device(ptr); 128 } 129 #endif 130 131 /* 132 * Set up the root device from the boot args 133 */ 134 void 135 cpu_rootconf() 136 { 137 #ifndef MEMORY_DISK_IS_ROOT 138 set_root_device(); 139 140 printf("boot device: %s\n", 141 booted_device != NULL ? booted_device->dv_xname : "<unknown>"); 142 #endif 143 setroot(booted_device, booted_partition); 144 } 145 146 147 /* 148 * void cpu_configure() 149 * 150 * Configure all the root devices 151 * The root devices are expected to configure their own children 152 */ 153 154 void 155 cpu_configure() 156 { 157 /* 158 * Configure all the roots. 159 * We have to have a mainbus 160 */ 161 162 /* 163 * Since the ICU is not standard on the ARM we don't know 164 * if we have one until we find a bridge. 165 * Since various PCI interrupts could be routed via the ICU 166 * (for PCI devices in the bridge) we need to set up the ICU 167 * now so that these interrupts can be established correctly 168 * i.e. This is a hack. 169 */ 170 171 config_rootfound("mainbus", NULL); 172 #if NPODULEBUS > 0 173 config_rootfound("podulebus", NULL); 174 #endif /* NPODULEBUS */ 175 176 /* Debugging information */ 177 #ifndef TERSE 178 printf("ipl_bio=%08x ipl_net=%08x ipl_tty=%08x ipl_imp=%08x\n", 179 irqmasks[IPL_BIO], irqmasks[IPL_NET], irqmasks[IPL_TTY], 180 irqmasks[IPL_IMP]); 181 printf("ipl_audio=%08x ipl_imp=%08x ipl_high=%08x ipl_serial=%08x\n", 182 irqmasks[IPL_AUDIO], irqmasks[IPL_CLOCK], irqmasks[IPL_HIGH], 183 irqmasks[IPL_SERIAL]); 184 #endif 185 186 /* Time to start taking interrupts so lets open the flood gates .... */ 187 (void)spl0(); 188 } 189 190 void 191 device_register(struct device *dev, void *aux) 192 { 193 } 194 /* End of autoconf.c */ 195