1 /* $NetBSD: boot2.c,v 1.60 2013/08/30 16:42:17 jmcneill Exp $ */ 2 3 /*- 4 * Copyright (c) 2008, 2009 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 /* 30 * Copyright (c) 2003 31 * David Laight. All rights reserved 32 * Copyright (c) 1996, 1997, 1999 33 * Matthias Drochner. All rights reserved. 34 * Copyright (c) 1996, 1997 35 * Perry E. Metzger. All rights reserved. 36 * Copyright (c) 1997 37 * Jason R. Thorpe. All rights reserved 38 * 39 * Redistribution and use in source and binary forms, with or without 40 * modification, are permitted provided that the following conditions 41 * are met: 42 * 1. Redistributions of source code must retain the above copyright 43 * notice, this list of conditions and the following disclaimer. 44 * 2. Redistributions in binary form must reproduce the above copyright 45 * notice, this list of conditions and the following disclaimer in the 46 * documentation and/or other materials provided with the distribution. 47 * 3. All advertising materials mentioning features or use of this software 48 * must display the following acknowledgements: 49 * This product includes software developed for the NetBSD Project 50 * by Matthias Drochner. 51 * This product includes software developed for the NetBSD Project 52 * by Perry E. Metzger. 53 * 4. The names of the authors may not be used to endorse or promote products 54 * derived from this software without specific prior written permission. 55 * 56 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 57 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 58 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 59 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 60 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 61 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 62 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 63 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 64 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 65 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 66 */ 67 68 /* Based on stand/biosboot/main.c */ 69 70 #include <sys/types.h> 71 #include <sys/reboot.h> 72 #include <sys/bootblock.h> 73 74 #include <lib/libsa/stand.h> 75 #include <lib/libsa/ufs.h> 76 #include <lib/libkern/libkern.h> 77 78 #include <libi386.h> 79 #include <bootmod.h> 80 #include <bootmenu.h> 81 #include <vbe.h> 82 #include "devopen.h" 83 84 #ifdef SUPPORT_PS2 85 #include <biosmca.h> 86 #endif 87 88 extern struct x86_boot_params boot_params; 89 90 extern const char bootprog_name[], bootprog_rev[], bootprog_kernrev[]; 91 92 int errno; 93 94 int boot_biosdev; 95 daddr_t boot_biossector; 96 97 static const char * const names[][2] = { 98 { "netbsd", "netbsd.gz" }, 99 { "onetbsd", "onetbsd.gz" }, 100 { "netbsd.old", "netbsd.old.gz" }, 101 }; 102 103 #define NUMNAMES (sizeof(names)/sizeof(names[0])) 104 #define DEFFILENAME names[0][0] 105 106 #define MAXDEVNAME 16 107 108 static char *default_devname; 109 static int default_unit, default_partition; 110 static const char *default_filename; 111 112 char *sprint_bootsel(const char *); 113 void bootit(const char *, int, int); 114 void print_banner(void); 115 void boot2(int, uint64_t); 116 117 void command_help(char *); 118 void command_ls(char *); 119 void command_quit(char *); 120 void command_boot(char *); 121 void command_dev(char *); 122 void command_consdev(char *); 123 #ifndef SMALL 124 void command_menu(char *); 125 #endif 126 void command_modules(char *); 127 void command_multiboot(char *); 128 129 const struct bootblk_command commands[] = { 130 { "help", command_help }, 131 { "?", command_help }, 132 { "ls", command_ls }, 133 { "quit", command_quit }, 134 { "boot", command_boot }, 135 { "dev", command_dev }, 136 { "consdev", command_consdev }, 137 #ifndef SMALL 138 { "menu", command_menu }, 139 #endif 140 { "modules", command_modules }, 141 { "load", module_add }, 142 { "multiboot", command_multiboot }, 143 { "vesa", command_vesa }, 144 { "splash", splash_add }, 145 { "rndseed", rnd_add }, 146 { "fs", fs_add }, 147 { "userconf", userconf_add }, 148 { NULL, NULL }, 149 }; 150 151 int 152 parsebootfile(const char *fname, char **fsname, char **devname, 153 int *unit, int *partition, const char **file) 154 { 155 const char *col; 156 157 *fsname = "ufs"; 158 *devname = default_devname; 159 *unit = default_unit; 160 *partition = default_partition; 161 *file = default_filename; 162 163 if (fname == NULL) 164 return 0; 165 166 if ((col = strchr(fname, ':')) != NULL) { /* device given */ 167 static char savedevname[MAXDEVNAME+1]; 168 int devlen; 169 int u = 0, p = 0; 170 int i = 0; 171 172 devlen = col - fname; 173 if (devlen > MAXDEVNAME) 174 return EINVAL; 175 176 #define isvalidname(c) ((c) >= 'a' && (c) <= 'z') 177 if (!isvalidname(fname[i])) 178 return EINVAL; 179 do { 180 savedevname[i] = fname[i]; 181 i++; 182 } while (isvalidname(fname[i])); 183 savedevname[i] = '\0'; 184 185 #define isnum(c) ((c) >= '0' && (c) <= '9') 186 if (i < devlen) { 187 if (!isnum(fname[i])) 188 return EUNIT; 189 do { 190 u *= 10; 191 u += fname[i++] - '0'; 192 } while (isnum(fname[i])); 193 } 194 195 #define isvalidpart(c) ((c) >= 'a' && (c) <= 'z') 196 if (i < devlen) { 197 if (!isvalidpart(fname[i])) 198 return EPART; 199 p = fname[i++] - 'a'; 200 } 201 202 if (i != devlen) 203 return ENXIO; 204 205 *devname = savedevname; 206 *unit = u; 207 *partition = p; 208 fname = col + 1; 209 } 210 211 if (*fname) 212 *file = fname; 213 214 return 0; 215 } 216 217 char * 218 sprint_bootsel(const char *filename) 219 { 220 char *fsname, *devname; 221 int unit, partition; 222 const char *file; 223 static char buf[80]; 224 225 if (parsebootfile(filename, &fsname, &devname, &unit, 226 &partition, &file) == 0) { 227 sprintf(buf, "%s%d%c:%s", devname, unit, 'a' + partition, file); 228 return buf; 229 } 230 return "(invalid)"; 231 } 232 233 static void 234 clearit(void) 235 { 236 237 if (bootconf.clear) 238 clear_pc_screen(); 239 } 240 241 void 242 bootit(const char *filename, int howto, int tell) 243 { 244 245 if (tell) { 246 printf("booting %s", sprint_bootsel(filename)); 247 if (howto) 248 printf(" (howto 0x%x)", howto); 249 printf("\n"); 250 } 251 252 if (exec_netbsd(filename, 0, howto, boot_biosdev < 0x80, clearit) < 0) 253 printf("boot: %s: %s\n", sprint_bootsel(filename), 254 strerror(errno)); 255 else 256 printf("boot returned\n"); 257 } 258 259 void 260 print_banner(void) 261 { 262 263 clearit(); 264 #ifndef SMALL 265 int n; 266 if (bootconf.banner[0]) { 267 for (n = 0; bootconf.banner[n] && n < MAXBANNER; n++) 268 printf("%s\n", bootconf.banner[n]); 269 } else { 270 #endif /* !SMALL */ 271 printf("\n" 272 ">> %s, Revision %s (from NetBSD %s)\n" 273 ">> Memory: %d/%d k\n", 274 bootprog_name, bootprog_rev, bootprog_kernrev, 275 getbasemem(), getextmem()); 276 277 #ifndef SMALL 278 } 279 #endif /* !SMALL */ 280 } 281 282 /* 283 * Called from the initial entry point boot_start in biosboot.S 284 * 285 * biosdev: BIOS drive number the system booted from 286 * biossector: Sector number of the NetBSD partition 287 */ 288 void 289 boot2(int biosdev, uint64_t biossector) 290 { 291 extern char twiddle_toggle; 292 int currname; 293 char c; 294 295 twiddle_toggle = 1; /* no twiddling until we're ready */ 296 297 initio(boot_params.bp_consdev); 298 299 #ifdef SUPPORT_PS2 300 biosmca(); 301 #endif 302 gateA20(); 303 304 boot_modules_enabled = !(boot_params.bp_flags 305 & X86_BP_FLAGS_NOMODULES); 306 if (boot_params.bp_flags & X86_BP_FLAGS_RESET_VIDEO) 307 biosvideomode(); 308 309 vbe_init(); 310 311 /* need to remember these */ 312 boot_biosdev = biosdev; 313 boot_biossector = biossector; 314 315 /* try to set default device to what BIOS tells us */ 316 bios2dev(biosdev, biossector, &default_devname, &default_unit, 317 &default_partition); 318 319 /* if the user types "boot" without filename */ 320 default_filename = DEFFILENAME; 321 322 #ifndef SMALL 323 if (!(boot_params.bp_flags & X86_BP_FLAGS_NOBOOTCONF)) { 324 parsebootconf(BOOTCONF); 325 } else { 326 bootconf.timeout = boot_params.bp_timeout; 327 } 328 329 330 /* 331 * If console set in boot.cfg, switch to it. 332 * This will print the banner, so we don't need to explicitly do it 333 */ 334 if (bootconf.consdev) 335 command_consdev(bootconf.consdev); 336 else 337 print_banner(); 338 339 /* Display the menu, if applicable */ 340 twiddle_toggle = 0; 341 if (bootconf.nummenu > 0) { 342 /* Does not return */ 343 doboottypemenu(); 344 } 345 346 #else 347 twiddle_toggle = 0; 348 print_banner(); 349 #endif 350 351 printf("Press return to boot now, any other key for boot menu\n"); 352 for (currname = 0; currname < NUMNAMES; currname++) { 353 printf("booting %s - starting in ", 354 sprint_bootsel(names[currname][0])); 355 356 #ifdef SMALL 357 c = awaitkey(boot_params.bp_timeout, 1); 358 #else 359 c = awaitkey((bootconf.timeout < 0) ? 0 : bootconf.timeout, 1); 360 #endif 361 if ((c != '\r') && (c != '\n') && (c != '\0')) { 362 if ((boot_params.bp_flags & X86_BP_FLAGS_PASSWORD) == 0) { 363 /* do NOT ask for password */ 364 bootmenu(); /* does not return */ 365 } else { 366 /* DO ask for password */ 367 if (check_password((char *)boot_params.bp_password)) { 368 /* password ok */ 369 printf("type \"?\" or \"help\" for help.\n"); 370 bootmenu(); /* does not return */ 371 } else { 372 /* bad password */ 373 printf("Wrong password.\n"); 374 currname = 0; 375 continue; 376 } 377 } 378 } 379 380 /* 381 * try pairs of names[] entries, foo and foo.gz 382 */ 383 /* don't print "booting..." again */ 384 bootit(names[currname][0], 0, 0); 385 /* since it failed, try compressed bootfile. */ 386 bootit(names[currname][1], 0, 1); 387 } 388 389 bootmenu(); /* does not return */ 390 } 391 392 /* ARGSUSED */ 393 void 394 command_help(char *arg) 395 { 396 397 printf("commands are:\n" 398 "boot [xdNx:][filename] [-12acdqsvxz]\n" 399 " (ex. \"hd0a:netbsd.old -s\"\n" 400 "ls [path]\n" 401 "dev xd[N[x]]:\n" 402 "consdev {pc|com[0123]|com[0123]kbd|auto}\n" 403 "vesa {modenum|on|off|enabled|disabled|list}\n" 404 #ifndef SMALL 405 "menu (reenters boot menu, if defined in boot.cfg)\n" 406 #endif 407 "modules {on|off|enabled|disabled}\n" 408 "load {path_to_module}\n" 409 "multiboot [xdNx:][filename] [<args>]\n" 410 "userconf {command}\n" 411 "rndseed {path_to_rndseed_file}\n" 412 "help|?\n" 413 "quit\n"); 414 } 415 416 void 417 command_ls(char *arg) 418 { 419 const char *save = default_filename; 420 421 default_filename = "/"; 422 ls(arg); 423 default_filename = save; 424 } 425 426 /* ARGSUSED */ 427 void 428 command_quit(char *arg) 429 { 430 431 printf("Exiting...\n"); 432 delay(1000000); 433 reboot(); 434 /* Note: we shouldn't get to this point! */ 435 panic("Could not reboot!"); 436 } 437 438 void 439 command_boot(char *arg) 440 { 441 char *filename; 442 int howto, tell; 443 444 if (!parseboot(arg, &filename, &howto)) 445 return; 446 447 tell = ((howto & AB_VERBOSE) != 0); 448 if (filename != NULL) { 449 bootit(filename, howto, tell); 450 } else { 451 int i; 452 453 #ifndef SMALL 454 bootdefault(); 455 #endif 456 for (i = 0; i < NUMNAMES; i++) { 457 bootit(names[i][0], howto, tell); 458 bootit(names[i][1], howto, tell); 459 } 460 } 461 } 462 463 void 464 command_dev(char *arg) 465 { 466 static char savedevname[MAXDEVNAME + 1]; 467 char *fsname, *devname; 468 const char *file; /* dummy */ 469 470 if (*arg == '\0') { 471 biosdisk_probe(); 472 printf("default %s%d%c\n", default_devname, default_unit, 473 'a' + default_partition); 474 return; 475 } 476 477 if (strchr(arg, ':') == NULL || 478 parsebootfile(arg, &fsname, &devname, &default_unit, 479 &default_partition, &file)) { 480 command_help(NULL); 481 return; 482 } 483 484 /* put to own static storage */ 485 strncpy(savedevname, devname, MAXDEVNAME + 1); 486 default_devname = savedevname; 487 } 488 489 static const struct cons_devs { 490 const char *name; 491 u_int tag; 492 } cons_devs[] = { 493 { "pc", CONSDEV_PC }, 494 { "com0", CONSDEV_COM0 }, 495 { "com1", CONSDEV_COM1 }, 496 { "com2", CONSDEV_COM2 }, 497 { "com3", CONSDEV_COM3 }, 498 { "com0kbd", CONSDEV_COM0KBD }, 499 { "com1kbd", CONSDEV_COM1KBD }, 500 { "com2kbd", CONSDEV_COM2KBD }, 501 { "com3kbd", CONSDEV_COM3KBD }, 502 { "auto", CONSDEV_AUTO }, 503 { NULL, 0 } 504 }; 505 506 void 507 command_consdev(char *arg) 508 { 509 const struct cons_devs *cdp; 510 511 for (cdp = cons_devs; cdp->name; cdp++) { 512 if (strcmp(arg, cdp->name) == 0) { 513 initio(cdp->tag); 514 print_banner(); 515 return; 516 } 517 } 518 printf("invalid console device.\n"); 519 } 520 521 #ifndef SMALL 522 /* ARGSUSED */ 523 void 524 command_menu(char *arg) 525 { 526 527 if (bootconf.nummenu > 0) { 528 /* Does not return */ 529 doboottypemenu(); 530 } else { 531 printf("No menu defined in boot.cfg\n"); 532 } 533 } 534 #endif /* !SMALL */ 535 536 void 537 command_modules(char *arg) 538 { 539 540 if (strcmp(arg, "enabled") == 0 || 541 strcmp(arg, "on") == 0) 542 boot_modules_enabled = true; 543 else if (strcmp(arg, "disabled") == 0 || 544 strcmp(arg, "off") == 0) 545 boot_modules_enabled = false; 546 else 547 printf("invalid flag, must be 'enabled' or 'disabled'.\n"); 548 } 549 550 void 551 command_multiboot(char *arg) 552 { 553 char *filename; 554 555 filename = arg; 556 if (exec_multiboot(filename, gettrailer(arg)) < 0) 557 printf("multiboot: %s: %s\n", sprint_bootsel(filename), 558 strerror(errno)); 559 else 560 printf("boot returned\n"); 561 } 562 563