1 /* $NetBSD: autoconf.c,v 1.22 2023/12/20 15:34:45 thorpej 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 <sys/cdefs.h> 46 __KERNEL_RCSID(0, "$NetBSD: autoconf.c,v 1.22 2023/12/20 15:34:45 thorpej Exp $"); 47 48 #include "opt_md.h" 49 50 #include <sys/param.h> 51 #include <sys/systm.h> 52 #include <sys/reboot.h> 53 #include <sys/disklabel.h> 54 #include <sys/device.h> 55 #include <sys/conf.h> 56 #include <sys/intr.h> 57 #include <sys/kernel.h> 58 59 #include <uvm/uvm_extern.h> 60 61 #include <arm/arm32/machdep.h> 62 63 #include <machine/bootconfig.h> 64 #include <machine/irqhandler.h> 65 66 #include "isa.h" 67 68 #ifdef SHARK 69 #include <shark/shark/sequoia.h> 70 extern void ofrootfound(void); 71 extern void ofw_device_register(device_t, void *); 72 extern void startrtclock(void); 73 #endif 74 75 #if defined(OFWGENCFG) || defined(SHARK) 76 /* Temporary for SHARK! */ 77 extern void ofw_device_register(device_t, void *); 78 #include <machine/ofw.h> 79 #endif 80 81 extern dev_t dumpdev; 82 83 void isa_intr_init(void); 84 85 #ifndef MEMORY_DISK_IS_ROOT 86 static void get_device(char *name); 87 static void set_root_device(void); 88 #endif 89 90 #ifndef MEMORY_DISK_IS_ROOT 91 /* Decode a device name to a major and minor number */ 92 93 static void 94 get_device(char *name) 95 { 96 int unit, part; 97 char devname[16], *cp; 98 device_t dv; 99 100 if (strncmp(name, "/dev/", 5) == 0) 101 name += 5; 102 103 if (devsw_name2blk(name, devname, sizeof(devname)) == -1) 104 return; 105 106 name += strlen(devname); 107 unit = part = 0; 108 109 cp = name; 110 while (*cp >= '0' && *cp <= '9') 111 unit = (unit * 10) + (*cp++ - '0'); 112 if (cp == name) 113 return; 114 115 if (*cp >= 'a' && *cp <= ('a' + MAXPARTITIONS)) 116 part = *cp - 'a'; 117 else if (*cp != '\0' && *cp != ' ') 118 return; 119 if ((dv = device_find_by_driver_unit(devname, unit)) != NULL) { 120 booted_device = dv; 121 booted_partition = part; 122 } 123 } 124 125 126 /* Set the rootdev variable from the root specifier in the boot args */ 127 128 static void 129 set_root_device(void) 130 { 131 char *ptr; 132 133 if (boot_file) 134 get_device(boot_file); 135 if (boot_args && 136 get_bootconf_option(boot_args, "root", BOOTOPT_TYPE_STRING, &ptr)) 137 get_device(ptr); 138 } 139 #endif 140 141 /* 142 * Set up the root device from the boot args 143 */ 144 void 145 cpu_rootconf(void) 146 { 147 #ifndef MEMORY_DISK_IS_ROOT 148 set_root_device(); 149 150 printf("boot device: %s\n", 151 booted_device != NULL ? device_xname(booted_device) : "<unknown>"); 152 #endif 153 rootconf(); 154 } 155 156 157 /* 158 * void cpu_configure() 159 * 160 * Configure all the root devices 161 * The root devices are expected to configure their own children 162 */ 163 164 void 165 cpu_configure(void) 166 { 167 /* 168 * Configure all the roots. 169 * We have to have a mainbus 170 */ 171 172 #ifdef SHARK 173 sequoiaInit(); 174 startrtclock(); 175 #endif 176 177 /* 178 * Since the ICU is not standard on the ARM we don't know 179 * if we have one until we find a bridge. 180 * Since various PCI interrupts could be routed via the ICU 181 * (for PCI devices in the bridge) we need to set up the ICU 182 * now so that these interrupts can be established correctly 183 * i.e. This is a hack. 184 */ 185 #if NISA > 0 && !defined(SHARK) 186 isa_intr_init(); 187 #endif 188 189 config_rootfound("mainbus", NULL); 190 #if defined(OFWGENCFG) || defined(SHARK) 191 /* Temporary for SHARK! */ 192 ofrootfound(); 193 #endif 194 195 #if defined(DIAGNOSTIC) 196 dump_spl_masks(); 197 #endif /* defined(DIAGNOSTIC) */ 198 199 /* Time to start taking interrupts so lets open the flood gates .... */ 200 (void)spl0(); 201 } 202 203 void 204 device_register(device_t dev, void *aux) 205 { 206 #if defined(OFWGENCFG) || defined(SHARK) 207 /* Temporary for SHARK! */ 208 ofw_device_register(dev, aux); 209 #endif 210 } 211 /* End of autoconf.c */ 212
Indexes created Sun Oct 25 00:26:45 UTC 2026