exec.c revision 1.72
1 /* $NetBSD: exec.c,v 1.72 2019/06/24 13:58:24 pgoyette 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) 1982, 1986, 1990, 1993 31 * The Regents of the University of California. All rights reserved. 32 * 33 * Redistribution and use in source and binary forms, with or without 34 * modification, are permitted provided that the following conditions 35 * are met: 36 * 1. Redistributions of source code must retain the above copyright 37 * notice, this list of conditions and the following disclaimer. 38 * 2. Redistributions in binary form must reproduce the above copyright 39 * notice, this list of conditions and the following disclaimer in the 40 * documentation and/or other materials provided with the distribution. 41 * 3. Neither the name of the University nor the names of its contributors 42 * may be used to endorse or promote products derived from this software 43 * without specific prior written permission. 44 * 45 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 46 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 47 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 48 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 49 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 50 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 51 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 52 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 53 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 54 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 55 * SUCH DAMAGE. 56 * 57 * @(#)boot.c 8.1 (Berkeley) 6/10/93 58 */ 59 60 /* 61 * Copyright (c) 1996 62 * Matthias Drochner. All rights reserved. 63 * Copyright (c) 1996 64 * Perry E. Metzger. All rights reserved. 65 * 66 * Redistribution and use in source and binary forms, with or without 67 * modification, are permitted provided that the following conditions 68 * are met: 69 * 1. Redistributions of source code must retain the above copyright 70 * notice, this list of conditions and the following disclaimer. 71 * 2. Redistributions in binary form must reproduce the above copyright 72 * notice, this list of conditions and the following disclaimer in the 73 * documentation and/or other materials provided with the distribution. 74 * 75 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 76 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 77 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 78 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 79 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 80 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 81 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 82 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 83 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 84 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 85 * SUCH DAMAGE. 86 * 87 * @(#)boot.c 8.1 (Berkeley) 6/10/93 88 */ 89 90 /* 91 * Starts a NetBSD ELF kernel. The low level startup is done in startprog.S. 92 * This is a special version of exec.c to support use of XMS. 93 */ 94 95 #include <sys/param.h> 96 #include <sys/reboot.h> 97 98 #include <i386/multiboot.h> 99 100 #include <lib/libsa/stand.h> 101 #include <lib/libkern/libkern.h> 102 103 #include "loadfile.h" 104 #include "libi386.h" 105 #include "bootinfo.h" 106 #include "bootmod.h" 107 #include "vbe.h" 108 #ifdef SUPPORT_PS2 109 #include "biosmca.h" 110 #endif 111 #ifdef EFIBOOT 112 #include "efiboot.h" 113 #undef DEBUG /* XXX */ 114 #endif 115 116 #define BOOT_NARGS 6 117 118 #ifndef PAGE_SIZE 119 #define PAGE_SIZE 4096 120 #endif 121 122 #define MODULE_WARNING_SEC 5 123 124 #define MAXMODNAME 32 /* from <sys/module.h> */ 125 126 extern struct btinfo_console btinfo_console; 127 128 boot_module_t *boot_modules; 129 bool boot_modules_enabled = true; 130 bool kernel_loaded; 131 132 typedef struct userconf_command { 133 char *uc_text; 134 size_t uc_len; 135 struct userconf_command *uc_next; 136 } userconf_command_t; 137 userconf_command_t *userconf_commands = NULL; 138 139 static struct btinfo_framebuffer btinfo_framebuffer; 140 141 static struct btinfo_modulelist *btinfo_modulelist; 142 static size_t btinfo_modulelist_size; 143 static uint32_t image_end; 144 static char module_base[64] = "/"; 145 static int howto; 146 147 static struct btinfo_userconfcommands *btinfo_userconfcommands = NULL; 148 static size_t btinfo_userconfcommands_size = 0; 149 150 static void module_init(const char *); 151 static void module_add_common(const char *, uint8_t); 152 153 static void userconf_init(void); 154 155 static void extract_device(const char *, char *, size_t); 156 static void module_base_path(char *, size_t); 157 static int module_open(boot_module_t *, int, const char *, const char *, 158 bool); 159 160 void 161 framebuffer_configure(struct btinfo_framebuffer *fb) 162 { 163 if (fb) 164 btinfo_framebuffer = *fb; 165 else { 166 btinfo_framebuffer.physaddr = 0; 167 btinfo_framebuffer.flags = 0; 168 } 169 } 170 171 void 172 module_add(char *name) 173 { 174 return module_add_common(name, BM_TYPE_KMOD); 175 } 176 177 void 178 splash_add(char *name) 179 { 180 return module_add_common(name, BM_TYPE_IMAGE); 181 } 182 183 void 184 rnd_add(char *name) 185 { 186 return module_add_common(name, BM_TYPE_RND); 187 } 188 189 void 190 fs_add(char *name) 191 { 192 return module_add_common(name, BM_TYPE_FS); 193 } 194 195 /* 196 * Add a /-separated list of module names to the boot list 197 */ 198 void 199 module_add_split(const char *name, uint8_t type) 200 { 201 char mod_name[MAXMODNAME]; 202 int i; 203 const char *mp = name; 204 char *ep; 205 206 while (*mp) { /* scan list of module names */ 207 i = MAXMODNAME; 208 ep = mod_name; 209 while (--i) { /* scan for end of first name */ 210 *ep = *mp; 211 if (*ep == '/') /* NUL-terminate the name */ 212 *ep = '\0'; 213 214 if (*ep == 0 ) { /* add non-empty name */ 215 if (ep != mod_name) 216 module_add_common(mod_name, type); 217 break; 218 } 219 ep++; mp++; 220 } 221 if (*ep != 0) { 222 printf("module name too long\n"); 223 return; 224 } 225 if (*mp == '/') { /* skip separator if more */ 226 mp++; 227 } 228 } 229 } 230 231 static void 232 module_add_common(const char *name, uint8_t type) 233 { 234 boot_module_t *bm, *bmp; 235 size_t len; 236 char *str; 237 238 while (*name == ' ' || *name == '\t') 239 ++name; 240 241 for (bm = boot_modules; bm != NULL; bm = bm->bm_next) 242 if (bm->bm_type == type && strcmp(bm->bm_path, name) == 0) 243 return; 244 245 bm = alloc(sizeof(boot_module_t)); 246 len = strlen(name) + 1; 247 str = alloc(len); 248 if (bm == NULL || str == NULL) { 249 printf("couldn't allocate module\n"); 250 return; 251 } 252 memcpy(str, name, len); 253 bm->bm_path = str; 254 bm->bm_next = NULL; 255 bm->bm_type = type; 256 if (boot_modules == NULL) 257 boot_modules = bm; 258 else { 259 for (bmp = boot_modules; bmp->bm_next; 260 bmp = bmp->bm_next) 261 ; 262 bmp->bm_next = bm; 263 } 264 } 265 266 void 267 userconf_add(char *cmd) 268 { 269 userconf_command_t *uc; 270 size_t len; 271 char *text; 272 273 while (*cmd == ' ' || *cmd == '\t') 274 ++cmd; 275 276 uc = alloc(sizeof(*uc)); 277 if (uc == NULL) { 278 printf("couldn't allocate command\n"); 279 return; 280 } 281 282 len = strlen(cmd) + 1; 283 text = alloc(len); 284 if (text == NULL) { 285 dealloc(uc, sizeof(*uc)); 286 printf("couldn't allocate command\n"); 287 return; 288 } 289 memcpy(text, cmd, len); 290 291 uc->uc_text = text; 292 uc->uc_len = len; 293 uc->uc_next = NULL; 294 295 if (userconf_commands == NULL) 296 userconf_commands = uc; 297 else { 298 userconf_command_t *ucp; 299 for (ucp = userconf_commands; ucp->uc_next != NULL; 300 ucp = ucp->uc_next) 301 ; 302 ucp->uc_next = uc; 303 } 304 } 305 306 struct btinfo_prekern bi_prekern; 307 int has_prekern = 0; 308 309 static int 310 common_load_prekern(const char *file, u_long *basemem, u_long *extmem, 311 physaddr_t loadaddr, int floppy, u_long marks[MARK_MAX]) 312 { 313 paddr_t kernpa_start, kernpa_end; 314 char prekernpath[] = "/prekern"; 315 u_long prekern_start; 316 int fd, flags; 317 318 *extmem = getextmem(); 319 *basemem = getbasemem(); 320 321 marks[MARK_START] = loadaddr; 322 323 /* Load the prekern (static) */ 324 flags = LOAD_KERNEL & ~(LOAD_HDR|LOAD_SYM); 325 if ((fd = loadfile(prekernpath, marks, flags)) == -1) 326 return EIO; 327 close(fd); 328 329 prekern_start = marks[MARK_START]; 330 331 /* The kernel starts at 2MB. */ 332 marks[MARK_START] = loadaddr; 333 marks[MARK_END] = loadaddr + (1UL << 21); 334 kernpa_start = (1UL << 21); 335 336 /* Load the kernel (dynamic) */ 337 flags = (LOAD_KERNEL | LOAD_DYN) & ~(floppy ? LOAD_BACKWARDS : 0); 338 if ((fd = loadfile(file, marks, flags)) == -1) 339 return EIO; 340 close(fd); 341 342 kernpa_end = marks[MARK_END] - loadaddr; 343 344 /* If the root fs type is unusual, load its module. */ 345 if (fsmod != NULL) 346 module_add_split(fsmod, BM_TYPE_KMOD); 347 348 bi_prekern.kernpa_start = kernpa_start; 349 bi_prekern.kernpa_end = kernpa_end; 350 BI_ADD(&bi_prekern, BTINFO_PREKERN, sizeof(struct btinfo_prekern)); 351 352 /* 353 * Gather some information for the kernel. Do this after the 354 * "point of no return" to avoid memory leaks. 355 * (but before DOS might be trashed in the XMS case) 356 */ 357 #ifdef PASS_BIOSGEOM 358 bi_getbiosgeom(); 359 #endif 360 #ifdef PASS_MEMMAP 361 bi_getmemmap(); 362 #endif 363 364 marks[MARK_START] = prekern_start; 365 marks[MARK_END] = (((u_long)marks[MARK_END] + sizeof(int) - 1)) & 366 (-sizeof(int)); 367 image_end = marks[MARK_END]; 368 kernel_loaded = true; 369 370 return 0; 371 } 372 373 static int 374 common_load_kernel(const char *file, u_long *basemem, u_long *extmem, 375 physaddr_t loadaddr, int floppy, u_long marks[MARK_MAX]) 376 { 377 int fd; 378 #ifdef XMS 379 u_long xmsmem; 380 physaddr_t origaddr = loadaddr; 381 #endif 382 383 *extmem = getextmem(); 384 *basemem = getbasemem(); 385 386 #ifdef XMS 387 if ((getextmem1() == 0) && (xmsmem = checkxms())) { 388 u_long kernsize; 389 390 /* 391 * With "CONSERVATIVE_MEMDETECT", extmem is 0 because 392 * getextmem() is getextmem1(). Without, the "smart" 393 * methods could fail to report all memory as well. 394 * xmsmem is a few kB less than the actual size, but 395 * better than nothing. 396 */ 397 if (xmsmem > *extmem) 398 *extmem = xmsmem; 399 /* 400 * Get the size of the kernel 401 */ 402 marks[MARK_START] = loadaddr; 403 if ((fd = loadfile(file, marks, COUNT_KERNEL)) == -1) 404 return EIO; 405 close(fd); 406 407 kernsize = marks[MARK_END]; 408 kernsize = (kernsize + 1023) / 1024; 409 410 loadaddr = xmsalloc(kernsize); 411 if (!loadaddr) 412 return ENOMEM; 413 } 414 #endif 415 marks[MARK_START] = loadaddr; 416 if ((fd = loadfile(file, marks, 417 LOAD_KERNEL & ~(floppy ? LOAD_BACKWARDS : 0))) == -1) 418 return EIO; 419 420 close(fd); 421 422 /* If the root fs type is unusual, load its module. */ 423 if (fsmod != NULL) 424 module_add_split(fsmod, BM_TYPE_KMOD); 425 426 /* 427 * Gather some information for the kernel. Do this after the 428 * "point of no return" to avoid memory leaks. 429 * (but before DOS might be trashed in the XMS case) 430 */ 431 #ifdef PASS_BIOSGEOM 432 bi_getbiosgeom(); 433 #endif 434 #ifdef PASS_MEMMAP 435 bi_getmemmap(); 436 #endif 437 438 #ifdef XMS 439 if (loadaddr != origaddr) { 440 /* 441 * We now have done our last DOS IO, so we may 442 * trash the OS. Copy the data from the temporary 443 * buffer to its real address. 444 */ 445 marks[MARK_START] -= loadaddr; 446 marks[MARK_END] -= loadaddr; 447 marks[MARK_SYM] -= loadaddr; 448 marks[MARK_END] -= loadaddr; 449 ppbcopy(loadaddr, origaddr, marks[MARK_END]); 450 } 451 #endif 452 marks[MARK_END] = (((u_long) marks[MARK_END] + sizeof(int) - 1)) & 453 (-sizeof(int)); 454 image_end = marks[MARK_END]; 455 kernel_loaded = true; 456 457 return 0; 458 } 459 460 int 461 exec_netbsd(const char *file, physaddr_t loadaddr, int boothowto, int floppy, 462 void (*callback)(void)) 463 { 464 uint32_t boot_argv[BOOT_NARGS]; 465 u_long marks[MARK_MAX]; 466 struct btinfo_symtab btinfo_symtab; 467 u_long extmem; 468 u_long basemem; 469 int error; 470 #ifdef EFIBOOT 471 int i; 472 #endif 473 474 #ifdef DEBUG 475 printf("exec: file=%s loadaddr=0x%lx\n", file ? file : "NULL", 476 loadaddr); 477 #endif 478 479 BI_ALLOC(BTINFO_MAX); 480 481 BI_ADD(&btinfo_console, BTINFO_CONSOLE, sizeof(struct btinfo_console)); 482 483 howto = boothowto; 484 485 memset(marks, 0, sizeof(marks)); 486 487 if (has_prekern) { 488 error = common_load_prekern(file, &basemem, &extmem, loadaddr, 489 floppy, marks); 490 } else { 491 error = common_load_kernel(file, &basemem, &extmem, loadaddr, 492 floppy, marks); 493 } 494 if (error) { 495 errno = error; 496 goto out; 497 } 498 #ifdef EFIBOOT 499 /* adjust to the real load address */ 500 marks[MARK_START] -= efi_loadaddr; 501 marks[MARK_ENTRY] -= efi_loadaddr; 502 marks[MARK_DATA] -= efi_loadaddr; 503 /* MARK_NSYM */ 504 marks[MARK_SYM] -= efi_loadaddr; 505 marks[MARK_END] -= efi_loadaddr; 506 #endif 507 508 boot_argv[0] = boothowto; 509 boot_argv[1] = 0; 510 boot_argv[2] = vtophys(bootinfo); /* old cyl offset */ 511 boot_argv[3] = marks[MARK_END]; 512 boot_argv[4] = extmem; 513 boot_argv[5] = basemem; 514 515 /* pull in any modules if necessary */ 516 if (boot_modules_enabled) { 517 module_init(file); 518 if (btinfo_modulelist) { 519 #ifdef EFIBOOT 520 /* convert module loaded address to paddr */ 521 struct bi_modulelist_entry *bim; 522 bim = (void *)(btinfo_modulelist + 1); 523 for (i = 0; i < btinfo_modulelist->num; i++, bim++) 524 bim->base -= efi_loadaddr; 525 btinfo_modulelist->endpa -= efi_loadaddr; 526 #endif 527 BI_ADD(btinfo_modulelist, BTINFO_MODULELIST, 528 btinfo_modulelist_size); 529 } 530 } 531 532 userconf_init(); 533 if (btinfo_userconfcommands != NULL) 534 BI_ADD(btinfo_userconfcommands, BTINFO_USERCONFCOMMANDS, 535 btinfo_userconfcommands_size); 536 537 #ifdef DEBUG 538 printf("Start @ 0x%lx [%ld=0x%lx-0x%lx]...\n", marks[MARK_ENTRY], 539 marks[MARK_NSYM], marks[MARK_SYM], marks[MARK_END]); 540 #endif 541 542 btinfo_symtab.nsym = marks[MARK_NSYM]; 543 btinfo_symtab.ssym = marks[MARK_SYM]; 544 btinfo_symtab.esym = marks[MARK_END]; 545 BI_ADD(&btinfo_symtab, BTINFO_SYMTAB, sizeof(struct btinfo_symtab)); 546 547 /* set new video mode if necessary */ 548 vbe_commit(); 549 BI_ADD(&btinfo_framebuffer, BTINFO_FRAMEBUFFER, 550 sizeof(struct btinfo_framebuffer)); 551 552 if (callback != NULL) 553 (*callback)(); 554 #ifdef EFIBOOT 555 /* Copy bootinfo to safe arena. */ 556 for (i = 0; i < bootinfo->nentries; i++) { 557 struct btinfo_common *bi = (void *)(u_long)bootinfo->entry[i]; 558 char *p = alloc(bi->len); 559 memcpy(p, bi, bi->len); 560 bootinfo->entry[i] = vtophys(p); 561 } 562 563 efi_kernel_start = marks[MARK_START]; 564 efi_kernel_size = image_end - (efi_loadaddr + efi_kernel_start); 565 #endif 566 startprog(marks[MARK_ENTRY], BOOT_NARGS, boot_argv, 567 x86_trunc_page(basemem * 1024)); 568 panic("exec returned"); 569 570 out: 571 BI_FREE(); 572 bootinfo = NULL; 573 return -1; 574 } 575 576 int 577 count_netbsd(const char *file, u_long *rsz) 578 { 579 u_long marks[MARK_MAX]; 580 char kdev[64]; 581 char base_path[64] = "/"; 582 struct stat st; 583 boot_module_t *bm; 584 u_long sz; 585 int err, fd; 586 587 if (has_prekern) { 588 /* 589 * Hardcoded for now. Need to count both the prekern and the 590 * kernel. 128MB is enough in all cases, so use that. 591 */ 592 *rsz = (128UL << 20); 593 return 0; 594 } 595 596 howto = AB_SILENT; 597 598 memset(marks, 0, sizeof(marks)); 599 if ((fd = loadfile(file, marks, COUNT_KERNEL | LOAD_NOTE)) == -1) 600 return -1; 601 close(fd); 602 marks[MARK_END] = (((u_long) marks[MARK_END] + sizeof(int) - 1)) & 603 (-sizeof(int)); 604 sz = marks[MARK_END]; 605 606 /* The modules must be allocated after the kernel */ 607 if (boot_modules_enabled) { 608 extract_device(file, kdev, sizeof(kdev)); 609 module_base_path(base_path, sizeof(base_path)); 610 611 /* If the root fs type is unusual, load its module. */ 612 if (fsmod != NULL) 613 module_add_split(fsmod, BM_TYPE_KMOD); 614 615 for (bm = boot_modules; bm; bm = bm->bm_next) { 616 fd = module_open(bm, 0, kdev, base_path, false); 617 if (fd == -1) 618 continue; 619 sz = (sz + PAGE_SIZE - 1) & ~(PAGE_SIZE - 1); 620 err = fstat(fd, &st); 621 if (err == -1 || st.st_size == -1) { 622 close(fd); 623 continue; 624 } 625 sz += st.st_size; 626 close(fd); 627 } 628 } 629 630 *rsz = sz; 631 return 0; 632 } 633 634 static void 635 extract_device(const char *path, char *buf, size_t buflen) 636 { 637 size_t i; 638 639 if (strchr(path, ':') != NULL) { 640 for (i = 0; i < buflen - 2 && path[i] != ':'; i++) 641 buf[i] = path[i]; 642 buf[i++] = ':'; 643 buf[i] = '\0'; 644 } else 645 buf[0] = '\0'; 646 } 647 648 static const char * 649 module_path(boot_module_t *bm, const char *kdev, const char *base_path) 650 { 651 static char buf[256]; 652 char name_buf[256], dev_buf[64]; 653 const char *name, *name2, *p; 654 655 name = bm->bm_path; 656 for (name2 = name; *name2; ++name2) { 657 if (*name2 == ' ' || *name2 == '\t') { 658 strlcpy(name_buf, name, sizeof(name_buf)); 659 if ((uintptr_t)name2 - (uintptr_t)name < sizeof(name_buf)) 660 name_buf[name2 - name] = '\0'; 661 name = name_buf; 662 break; 663 } 664 } 665 if ((p = strchr(name, ':')) != NULL) { 666 /* device specified, use it */ 667 if (p[1] == '/') 668 snprintf(buf, sizeof(buf), "%s", name); 669 else { 670 p++; 671 extract_device(name, dev_buf, sizeof(dev_buf)); 672 snprintf(buf, sizeof(buf), "%s%s/%s/%s.kmod", 673 dev_buf, base_path, p, p); 674 } 675 } else { 676 /* device not specified; load from kernel device if known */ 677 if (name[0] == '/') 678 snprintf(buf, sizeof(buf), "%s%s", kdev, name); 679 else 680 snprintf(buf, sizeof(buf), "%s%s/%s/%s.kmod", 681 kdev, base_path, name, name); 682 } 683 684 return buf; 685 } 686 687 static int 688 module_open(boot_module_t *bm, int mode, const char *kdev, 689 const char *base_path, bool doload) 690 { 691 int fd; 692 const char *path; 693 694 /* check the expanded path first */ 695 path = module_path(bm, kdev, base_path); 696 fd = open(path, mode); 697 if (fd != -1) { 698 if ((howto & AB_SILENT) == 0 && doload) 699 printf("Loading %s ", path); 700 } else { 701 /* now attempt the raw path provided */ 702 fd = open(bm->bm_path, mode); 703 if (fd != -1 && (howto & AB_SILENT) == 0 && doload) 704 printf("Loading %s ", bm->bm_path); 705 } 706 if (!doload && fd == -1) { 707 printf("WARNING: couldn't open %s", bm->bm_path); 708 if (strcmp(bm->bm_path, path) != 0) 709 printf(" (%s)", path); 710 printf("\n"); 711 } 712 return fd; 713 } 714 715 static void 716 module_base_path(char *buf, size_t bufsize) 717 { 718 const char *machine; 719 720 switch (netbsd_elf_class) { 721 case ELFCLASS32: 722 machine = "i386"; 723 break; 724 case ELFCLASS64: 725 machine = "amd64"; 726 break; 727 default: 728 machine = "generic"; 729 break; 730 } 731 if (netbsd_version / 1000000 % 100 == 99) { 732 /* -current */ 733 snprintf(buf, bufsize, 734 "/stand/%s/%d.%d.%d/modules", machine, 735 netbsd_version / 100000000, 736 netbsd_version / 1000000 % 100, 737 netbsd_version / 100 % 100); 738 } else if (netbsd_version != 0) { 739 /* release */ 740 snprintf(buf, bufsize, 741 "/stand/%s/%d.%d/modules", machine, 742 netbsd_version / 100000000, 743 netbsd_version / 1000000 % 100); 744 } 745 } 746 747 static void 748 module_init(const char *kernel_path) 749 { 750 struct bi_modulelist_entry *bi; 751 struct stat st; 752 char kdev[64]; 753 char *buf; 754 boot_module_t *bm; 755 ssize_t len; 756 off_t off; 757 int err, fd, nfail = 0; 758 759 extract_device(kernel_path, kdev, sizeof(kdev)); 760 module_base_path(module_base, sizeof(module_base)); 761 762 /* First, see which modules are valid and calculate btinfo size */ 763 len = sizeof(struct btinfo_modulelist); 764 for (bm = boot_modules; bm; bm = bm->bm_next) { 765 fd = module_open(bm, 0, kdev, module_base, false); 766 if (fd == -1) { 767 bm->bm_len = -1; 768 ++nfail; 769 continue; 770 } 771 err = fstat(fd, &st); 772 if (err == -1 || st.st_size == -1) { 773 printf("WARNING: couldn't stat %s\n", bm->bm_path); 774 close(fd); 775 bm->bm_len = -1; 776 ++nfail; 777 continue; 778 } 779 bm->bm_len = st.st_size; 780 close(fd); 781 len += sizeof(struct bi_modulelist_entry); 782 } 783 784 /* Allocate the module list */ 785 btinfo_modulelist = alloc(len); 786 if (btinfo_modulelist == NULL) { 787 printf("WARNING: couldn't allocate module list\n"); 788 wait_sec(MODULE_WARNING_SEC); 789 return; 790 } 791 memset(btinfo_modulelist, 0, len); 792 btinfo_modulelist_size = len; 793 794 /* Fill in btinfo structure */ 795 buf = (char *)btinfo_modulelist; 796 btinfo_modulelist->num = 0; 797 off = sizeof(struct btinfo_modulelist); 798 799 for (bm = boot_modules; bm; bm = bm->bm_next) { 800 if (bm->bm_len == -1) 801 continue; 802 fd = module_open(bm, 0, kdev, module_base, true); 803 if (fd == -1) 804 continue; 805 image_end = (image_end + PAGE_SIZE - 1) & ~(PAGE_SIZE - 1); 806 len = pread(fd, (void *)(uintptr_t)image_end, SSIZE_MAX); 807 if (len < bm->bm_len) { 808 if ((howto & AB_SILENT) != 0) 809 printf("Loading %s ", bm->bm_path); 810 printf(" FAILED\n"); 811 } else { 812 btinfo_modulelist->num++; 813 bi = (struct bi_modulelist_entry *)(buf + off); 814 off += sizeof(struct bi_modulelist_entry); 815 strncpy(bi->path, bm->bm_path, sizeof(bi->path) - 1); 816 bi->base = image_end; 817 bi->len = len; 818 switch (bm->bm_type) { 819 case BM_TYPE_KMOD: 820 bi->type = BI_MODULE_ELF; 821 break; 822 case BM_TYPE_IMAGE: 823 bi->type = BI_MODULE_IMAGE; 824 break; 825 case BM_TYPE_FS: 826 bi->type = BI_MODULE_FS; 827 break; 828 case BM_TYPE_RND: 829 default: 830 /* safest -- rnd checks the sha1 */ 831 bi->type = BI_MODULE_RND; 832 break; 833 } 834 if ((howto & AB_SILENT) == 0) 835 printf(" \n"); 836 } 837 if (len > 0) 838 image_end += len; 839 close(fd); 840 } 841 btinfo_modulelist->endpa = image_end; 842 843 if (nfail > 0) { 844 printf("WARNING: %d module%s failed to load\n", 845 nfail, nfail == 1 ? "" : "s"); 846 #if notyet 847 wait_sec(MODULE_WARNING_SEC); 848 #endif 849 } 850 } 851 852 static void 853 userconf_init(void) 854 { 855 size_t count, len; 856 userconf_command_t *uc; 857 char *buf; 858 off_t off; 859 860 /* Calculate the userconf commands list size */ 861 count = 0; 862 for (uc = userconf_commands; uc != NULL; uc = uc->uc_next) 863 count++; 864 len = sizeof(*btinfo_userconfcommands) + 865 count * sizeof(struct bi_userconfcommand); 866 867 /* Allocate the userconf commands list */ 868 btinfo_userconfcommands = alloc(len); 869 if (btinfo_userconfcommands == NULL) { 870 printf("WARNING: couldn't allocate userconf commands list\n"); 871 return; 872 } 873 memset(btinfo_userconfcommands, 0, len); 874 btinfo_userconfcommands_size = len; 875 876 /* Fill in btinfo structure */ 877 buf = (char *)btinfo_userconfcommands; 878 off = sizeof(*btinfo_userconfcommands); 879 btinfo_userconfcommands->num = 0; 880 for (uc = userconf_commands; uc != NULL; uc = uc->uc_next) { 881 struct bi_userconfcommand *bi; 882 bi = (struct bi_userconfcommand *)(buf + off); 883 strncpy(bi->text, uc->uc_text, sizeof(bi->text) - 1); 884 885 off += sizeof(*bi); 886 btinfo_userconfcommands->num++; 887 } 888 } 889 890 int 891 exec_multiboot(const char *file, char *args) 892 { 893 struct multiboot_info *mbi; 894 struct multiboot_module *mbm; 895 struct bi_modulelist_entry *bim; 896 int i, len; 897 u_long marks[MARK_MAX]; 898 u_long extmem; 899 u_long basemem; 900 char *cmdline; 901 902 mbi = alloc(sizeof(struct multiboot_info)); 903 mbi->mi_flags = MULTIBOOT_INFO_HAS_MEMORY; 904 905 if (common_load_kernel(file, &basemem, &extmem, 0, 0, marks)) 906 goto out; 907 908 mbi->mi_mem_upper = extmem; 909 mbi->mi_mem_lower = basemem; 910 911 if (args) { 912 mbi->mi_flags |= MULTIBOOT_INFO_HAS_CMDLINE; 913 len = strlen(file) + 1 + strlen(args) + 1; 914 cmdline = alloc(len); 915 snprintf(cmdline, len, "%s %s", file, args); 916 mbi->mi_cmdline = (char *) vtophys(cmdline); 917 } 918 919 /* pull in any modules if necessary */ 920 if (boot_modules_enabled) { 921 module_init(file); 922 if (btinfo_modulelist) { 923 mbm = alloc(sizeof(struct multiboot_module) * 924 btinfo_modulelist->num); 925 926 bim = (struct bi_modulelist_entry *) 927 (((char *) btinfo_modulelist) + 928 sizeof(struct btinfo_modulelist)); 929 for (i = 0; i < btinfo_modulelist->num; i++) { 930 mbm[i].mmo_start = bim->base; 931 mbm[i].mmo_end = bim->base + bim->len; 932 mbm[i].mmo_string = (char *)vtophys(bim->path); 933 mbm[i].mmo_reserved = 0; 934 bim++; 935 } 936 mbi->mi_flags |= MULTIBOOT_INFO_HAS_MODS; 937 mbi->mi_mods_count = btinfo_modulelist->num; 938 mbi->mi_mods_addr = vtophys(mbm); 939 } 940 } 941 942 #ifdef DEBUG 943 printf("Start @ 0x%lx [%ld=0x%lx-0x%lx]...\n", marks[MARK_ENTRY], 944 marks[MARK_NSYM], marks[MARK_SYM], marks[MARK_END]); 945 #endif 946 947 #if 0 948 if (btinfo_symtab.nsym) { 949 mbi->mi_flags |= MULTIBOOT_INFO_HAS_ELF_SYMS; 950 mbi->mi_elfshdr_addr = marks[MARK_SYM]; 951 btinfo_symtab.nsym = marks[MARK_NSYM]; 952 btinfo_symtab.ssym = marks[MARK_SYM]; 953 btinfo_symtab.esym = marks[MARK_END]; 954 #endif 955 956 multiboot(marks[MARK_ENTRY], vtophys(mbi), 957 x86_trunc_page(mbi->mi_mem_lower * 1024)); 958 panic("exec returned"); 959 960 out: 961 dealloc(mbi, 0); 962 return -1; 963 } 964 965 void 966 x86_progress(const char *fmt, ...) 967 { 968 va_list ap; 969 970 if ((howto & AB_SILENT) != 0) 971 return; 972 va_start(ap, fmt); 973 vprintf(fmt, ap); 974 va_end(ap); 975 } 976
Indexes created Mon Sep 22 21:09:42 GMT 2025