boot.c revision 1.1
1 /* $NetBSD: boot.c,v 1.1 2003/06/25 17:24:22 cdi Exp $ */ 2 3 /*- 4 * Copyright (c) 2003 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jonathan Stone, Michael Hitch, Simon Burge and Wayne Knowles. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * Copyright (c) 1992, 1993 41 * The Regents of the University of California. All rights reserved. 42 * 43 * This code is derived from software contributed to Berkeley by 44 * Ralph Campbell. 45 * 46 * Redistribution and use in source and binary forms, with or without 47 * modification, are permitted provided that the following conditions 48 * are met: 49 * 1. Redistributions of source code must retain the above copyright 50 * notice, this list of conditions and the following disclaimer. 51 * 2. Redistributions in binary form must reproduce the above copyright 52 * notice, this list of conditions and the following disclaimer in the 53 * documentation and/or other materials provided with the distribution. 54 * 3. All advertising materials mentioning features or use of this software 55 * must display the following acknowledgement: 56 * This product includes software developed by the University of 57 * California, Berkeley and its contributors. 58 * 4. Neither the name of the University nor the names of its contributors 59 * may be used to endorse or promote products derived from this software 60 * without specific prior written permission. 61 * 62 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 63 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 64 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 65 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 66 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 67 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 68 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 69 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 70 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 71 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 72 * SUCH DAMAGE. 73 * 74 * @(#)boot.c 8.1 (Berkeley) 6/10/93 75 */ 76 77 #include <machine/cpu.h> 78 #include <machine/leds.h> 79 #include <machine/vmparam.h> 80 81 #include <lib/libsa/stand.h> 82 #include <lib/libsa/loadfile.h> 83 #include <lib/libkern/libkern.h> 84 85 #include <sys/param.h> 86 #include <sys/exec.h> 87 #include <sys/exec_elf.h> 88 89 #include "boot.h" 90 #include "cons.h" 91 #include "common.h" 92 93 char *kernelnames[] = { 94 "netbsd", 95 "netbsd.gz", 96 "onetbsd", 97 "onetbsd.gz", 98 "netbsd.bak", 99 "netbsd.bak.gz", 100 "netbsd.old", 101 "netbsd.old.gz", 102 "netbsd.cobalt", 103 "netbsd.cobalt.gz", 104 "netbsd.elf", 105 "netbsd.elf.gz", 106 NULL 107 }; 108 109 extern long end; 110 static char *bootstring; 111 112 static int patch_bootstring (char *bootspec); 113 static int get_bsdbootname (char **dev, char **name, char **kname); 114 static int prominit (unsigned int memsize); 115 static int print_banner (unsigned int memsize); 116 117 void start(void); 118 int cpu_reboot(void); 119 int main(unsigned int memsize); 120 121 /* 122 * Perform CPU reboot. 123 */ 124 int 125 cpu_reboot() 126 { 127 printf("rebooting...\n\n"); 128 129 *(volatile char *)MIPS_PHYS_TO_KSEG1(LED_ADDR) = LED_RESET; 130 printf("WARNING: reboot failed!\n"); 131 132 for (;;); 133 } 134 135 /* 136 * Substitute root value with NetBSD root partition name. 137 */ 138 int 139 patch_bootstring(bootspec) 140 char *bootspec; 141 { 142 char *sp = bootstring; 143 u_int8_t unit, part; 144 int dev, error; 145 char *file; 146 147 DPRINTF(("patch_bootstring: %s\n", bootspec)); 148 149 /* get boot parameters */ 150 if (devparse(bootspec, &dev, &unit, &part, (const char **)&file) != 0) 151 unit = part = 0; 152 153 DPRINTF(("patch_bootstring: %d, %d\n", unit, part)); 154 155 /* take out the 'root=xxx' parameter */ 156 if ( (sp = strstr(bootstring, "root=")) != NULL) { 157 const char *end; 158 159 end = strchr(sp, ' '); 160 161 /* strip off leading spaces */ 162 for (--sp; (sp > bootstring) && (*sp == ' '); --sp) 163 ; 164 165 if (end != NULL) 166 strcpy(++sp, end); 167 else 168 *++sp = '\0'; 169 } 170 171 DPRINTF(("patch_bootstring: [%s]\n", bootstring)); 172 173 #define DEVNAMESIZE (MAXDEVNAME + sizeof(" root=/dev/hd") + sizeof("0a")) 174 /* bsd notation -> linux notation (wd0a -> hda1) */ 175 if (strlen(bootstring) <= (511 - DEVNAMESIZE)) { 176 int len; 177 178 strcat(bootstring, " root=/dev/hd"); 179 180 len = strlen(bootstring); 181 bootstring[len++] = unit + 'a'; 182 bootstring[len++] = part + '1'; 183 bootstring[len++] = '\0'; 184 } 185 186 DPRINTF(("patch_bootstring: -> %s\n", bootstring)); 187 return (0); 188 } 189 190 /* 191 * Extract NetBSD boot specification 192 */ 193 int 194 get_bsdbootname(dev, name, kname) 195 char **dev; 196 char **name; 197 char **kname; 198 { 199 char *spec; 200 201 *dev = NULL; 202 *name = NULL; 203 *kname = NULL; 204 205 if ( (spec = strstr(bootstring, "nbsd=")) != NULL) { 206 int len; 207 char *ptr = strchr(spec, ' '); 208 209 spec += 5; /* skip 'nbsd=' */ 210 len = (ptr == NULL) ? strlen(spec) : ptr - spec; 211 212 if (len > 0) { 213 char *devname = alloc(len + 1); 214 if (devname != NULL) { 215 memcpy(devname, spec, len); 216 devname[len] = '\0'; 217 218 if ( (ptr = memchr(devname,':',len)) != NULL) { 219 /* wdXX:kernel */ 220 *ptr = '\0'; 221 *dev = devname; 222 223 if (*++ptr) 224 *kname = ptr; 225 226 devname = alloc(len + 1); 227 if (devname != NULL) { 228 memcpy(devname, spec, len); 229 devname[len] = '\0'; 230 } 231 } 232 233 *name = devname; 234 return (0); 235 } 236 } 237 } 238 239 return (1); 240 } 241 242 /* 243 * Get the bootstring from PROM. 244 */ 245 int 246 prominit(memsize) 247 unsigned int memsize; 248 { 249 bootstring = (char *)(memsize - 512); 250 bootstring[511] = '\0'; 251 } 252 253 /* 254 * Print boot message. 255 */ 256 int 257 print_banner(memsize) 258 unsigned int memsize; 259 { 260 printf("\n"); 261 printf(">> %s " NETBSD_VERS " Bootloader, Revision %s [@%p]\n", 262 bootprog_name, bootprog_rev, 263 (unsigned long)&start & ~PAGE_MASK); 264 printf(">> (%s, %s)\n", bootprog_maker, bootprog_date); 265 printf(">> Memory:\t\t%u k\n", (memsize - MIPS_KSEG0_START) / 1024); 266 printf(">> PROM boot string:\t%s\n", bootstring); 267 } 268 269 /* 270 * Entry point. 271 * Parse PROM boot string, load the kernel and jump into it 272 */ 273 int 274 main(memsize) 275 unsigned int memsize; 276 { 277 char *name, **namep, *dev, *kernel, *spec; 278 char bootpath[PATH_MAX]; 279 int win; 280 u_long marks[MARK_MAX]; 281 void (*entry) __P((unsigned int)); 282 283 int addr, speed; 284 285 prominit(memsize); 286 cninit(&addr, &speed); 287 288 print_banner(memsize); 289 290 memset(marks, 0, sizeof marks); 291 get_bsdbootname(&dev, &name, &kernel); 292 293 if (kernel != NULL) { 294 DPRINTF(("kernel: %s\n", kernel)); 295 patch_bootstring(name); 296 win = (loadfile(name, marks, LOAD_KERNEL) == 0); 297 } else { 298 win = 0; 299 DPRINTF(("kernel: NULL\n")); 300 for (namep = kernelnames, win = 0; 301 (*namep != NULL) && !win; 302 namep++) { 303 kernel = *namep; 304 305 bootpath[0] = '\0'; 306 307 strcpy(bootpath, (dev != NULL) ? dev : "wd0a"); 308 strcat(bootpath, ":"); 309 strcat(bootpath, kernel); 310 311 printf("Loading: %s\n", bootpath); 312 patch_bootstring(bootpath); 313 win = (loadfile(bootpath, marks, LOAD_ALL) != -1); 314 } 315 } 316 317 if (win) { 318 entry = (void *) marks[MARK_ENTRY]; 319 320 printf("Starting at 0x%x\n\n", (u_int)entry); 321 (*entry)(memsize); 322 } 323 324 (void)printf("Boot failed! Rebooting...\n"); 325 return (0); 326 } 327
Indexes created Sat Sep 20 22:09:52 GMT 2025