boot.c revision 1.3
1 /* $NetBSD: boot.c,v 1.3 2004/01/07 12:43:44 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. Neither the name of the University nor the names of its contributors 55 * may be used to endorse or promote products derived from this software 56 * without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 59 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 60 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 61 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 62 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 63 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 64 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 65 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 66 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 67 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 68 * SUCH DAMAGE. 69 * 70 * @(#)boot.c 8.1 (Berkeley) 6/10/93 71 */ 72 73 #include <machine/cpu.h> 74 #include <machine/leds.h> 75 #include <machine/vmparam.h> 76 77 #include <lib/libsa/stand.h> 78 #include <lib/libsa/loadfile.h> 79 #include <lib/libkern/libkern.h> 80 81 #include <sys/param.h> 82 #include <sys/exec.h> 83 #include <sys/exec_elf.h> 84 85 #include "boot.h" 86 #include "cons.h" 87 #include "common.h" 88 #include "bootinfo.h" 89 90 char *kernelnames[] = { 91 "netbsd", 92 "netbsd.gz", 93 "onetbsd", 94 "onetbsd.gz", 95 "netbsd.bak", 96 "netbsd.bak.gz", 97 "netbsd.old", 98 "netbsd.old.gz", 99 "netbsd.cobalt", 100 "netbsd.cobalt.gz", 101 "netbsd.elf", 102 "netbsd.elf.gz", 103 NULL 104 }; 105 106 extern u_long end; /* Boot loader code end address */ 107 void start(void); 108 109 static char *bootstring; 110 111 static int patch_bootstring (char *bootspec); 112 static int get_bsdbootname (char **dev, char **name, char **kname); 113 static int prominit (unsigned int memsize); 114 static int print_banner (unsigned int memsize); 115 116 int cpu_reboot(void); 117 118 int main(unsigned int memsize); 119 120 /* 121 * Perform CPU reboot. 122 */ 123 int 124 cpu_reboot() 125 { 126 printf("rebooting...\n\n"); 127 128 *(volatile char *)MIPS_PHYS_TO_KSEG1(LED_ADDR) = LED_RESET; 129 printf("WARNING: reboot failed!\n"); 130 131 for (;;); 132 } 133 134 /* 135 * Substitute root value with NetBSD root partition name. 136 */ 137 int 138 patch_bootstring(bootspec) 139 char *bootspec; 140 { 141 char *sp = bootstring; 142 u_int8_t unit, part; 143 int dev, error; 144 char *file; 145 146 DPRINTF(("patch_bootstring: %s\n", bootspec)); 147 148 /* get boot parameters */ 149 if (devparse(bootspec, &dev, &unit, &part, (const char **)&file) != 0) 150 unit = part = 0; 151 152 DPRINTF(("patch_bootstring: %d, %d\n", unit, part)); 153 154 /* take out the 'root=xxx' parameter */ 155 if ( (sp = strstr(bootstring, "root=")) != NULL) { 156 const char *end; 157 158 end = strchr(sp, ' '); 159 160 /* strip off leading spaces */ 161 for (--sp; (sp > bootstring) && (*sp == ' '); --sp) 162 ; 163 164 if (end != NULL) 165 strcpy(++sp, end); 166 else 167 *++sp = '\0'; 168 } 169 170 DPRINTF(("patch_bootstring: [%s]\n", bootstring)); 171 172 #define DEVNAMESIZE (MAXDEVNAME + sizeof(" root=/dev/hd") + sizeof("0a")) 173 /* bsd notation -> linux notation (wd0a -> hda1) */ 174 if (strlen(bootstring) <= (511 - DEVNAMESIZE)) { 175 int len; 176 177 strcat(bootstring, " root=/dev/hd"); 178 179 len = strlen(bootstring); 180 bootstring[len++] = unit + 'a'; 181 bootstring[len++] = part + '1'; 182 bootstring[len++] = '\0'; 183 } 184 185 DPRINTF(("patch_bootstring: -> %s\n", bootstring)); 186 return (0); 187 } 188 189 /* 190 * Extract NetBSD boot specification 191 */ 192 int 193 get_bsdbootname(dev, name, kname) 194 char **dev; 195 char **name; 196 char **kname; 197 { 198 char *spec; 199 200 *dev = NULL; 201 *name = NULL; 202 *kname = NULL; 203 204 if ( (spec = strstr(bootstring, "nbsd=")) != NULL) { 205 int len; 206 char *ptr = strchr(spec, ' '); 207 208 spec += 5; /* skip 'nbsd=' */ 209 len = (ptr == NULL) ? strlen(spec) : ptr - spec; 210 211 if (len > 0) { 212 char *devname = alloc(len + 1); 213 if (devname != NULL) { 214 memcpy(devname, spec, len); 215 devname[len] = '\0'; 216 217 if ( (ptr = memchr(devname,':',len)) != NULL) { 218 /* wdXX:kernel */ 219 *ptr = '\0'; 220 *dev = devname; 221 222 if (*++ptr) 223 *kname = ptr; 224 225 devname = alloc(len + 1); 226 if (devname != NULL) { 227 memcpy(devname, spec, len); 228 devname[len] = '\0'; 229 } 230 } 231 232 *name = devname; 233 return (0); 234 } 235 } 236 } 237 238 return (1); 239 } 240 241 /* 242 * Get the bootstring from PROM. 243 */ 244 int 245 prominit(memsize) 246 unsigned int memsize; 247 { 248 bootstring = (char *)(memsize - 512); 249 bootstring[511] = '\0'; 250 } 251 252 /* 253 * Print boot message. 254 */ 255 int 256 print_banner(memsize) 257 unsigned int memsize; 258 { 259 printf("\n"); 260 printf(">> %s " NETBSD_VERS " Bootloader, Revision %s [@%p]\n", 261 bootprog_name, bootprog_rev, (void*)&start); 262 printf(">> (%s, %s)\n", bootprog_maker, bootprog_date); 263 printf(">> Memory:\t\t%u k\n", (memsize - MIPS_KSEG0_START) / 1024); 264 printf(">> PROM boot string:\t%s\n", bootstring); 265 } 266 267 /* 268 * Entry point. 269 * Parse PROM boot string, load the kernel and jump into it 270 */ 271 int 272 main(memsize) 273 unsigned int memsize; 274 { 275 char *name, **namep, *dev, *kernel, *spec, *bi_addr; 276 char bootpath[PATH_MAX]; 277 int win; 278 u_long marks[MARK_MAX]; 279 void (*entry) __P((unsigned int, u_int, char*)); 280 281 struct btinfo_flags bi_flags; 282 struct btinfo_symtab bi_syms; 283 struct btinfo_bootpath bi_bpath; 284 285 int addr, speed; 286 287 /* Initialize boot info early */ 288 bi_flags.bi_flags = 0x0; 289 bi_addr = bi_init(); 290 291 prominit(memsize); 292 if (cninit(&addr, &speed) != NULL) 293 bi_flags.bi_flags |= BI_SERIAL_CONSOLE; 294 295 print_banner(memsize); 296 297 memset(marks, 0, sizeof marks); 298 get_bsdbootname(&dev, &name, &kernel); 299 300 if (kernel != NULL) { 301 DPRINTF(("kernel: %s\n", kernel)); 302 patch_bootstring(name); 303 win = (loadfile(name, marks, LOAD_KERNEL) == 0); 304 } else { 305 win = 0; 306 DPRINTF(("kernel: NULL\n")); 307 DPRINTF(("Kernel names: %p\n", kernelnames)); 308 for (namep = kernelnames, win = 0; 309 (*namep != NULL) && !win; 310 namep++) { 311 kernel = *namep; 312 313 bootpath[0] = '\0'; 314 315 strcpy(bootpath, (dev != NULL) ? dev : "wd0a"); 316 strcat(bootpath, ":"); 317 strcat(bootpath, kernel); 318 319 printf("Loading: %s\n", bootpath); 320 patch_bootstring(bootpath); 321 win = (loadfile(bootpath, marks, LOAD_ALL) != -1); 322 } 323 } 324 325 if (win) { 326 strncpy(bi_bpath.bootpath, kernel, BTINFO_BOOTPATH_LEN); 327 bi_add(&bi_bpath, BTINFO_BOOTPATH, sizeof(bi_bpath)); 328 329 entry = (void *) marks[MARK_ENTRY]; 330 bi_syms.nsym = marks[MARK_NSYM]; 331 bi_syms.ssym = marks[MARK_SYM]; 332 bi_syms.esym = marks[MARK_END]; 333 bi_add(&bi_syms, BTINFO_SYMTAB, sizeof(bi_syms)); 334 335 bi_add(&bi_flags, BTINFO_FLAGS, sizeof(bi_flags)); 336 337 entry = (void *) marks[MARK_ENTRY]; 338 339 DPRINTF(("Bootinfo @ 0x%x\n", bi_addr)); 340 printf("Starting at 0x%x\n\n", (u_int)entry); 341 (*entry)(memsize, BOOTINFO_MAGIC, bi_addr); 342 } 343 344 (void)printf("Boot failed! Rebooting...\n"); 345 return (0); 346 } 347
Indexes created Sat Sep 20 22:09:52 GMT 2025