exec.c revision 1.71
1 /* $NetBSD: exec.c,v 1.71 2019/06/24 02:48:51 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 extern struct btinfo_console btinfo_console; 125 126 boot_module_t *boot_modules; 127 bool boot_modules_enabled = true; 128 bool kernel_loaded; 129 130 typedef struct userconf_command { 131 char *uc_text; 132 size_t uc_len; 133 struct userconf_command *uc_next; 134 } userconf_command_t; 135 userconf_command_t *userconf_commands = NULL; 136 137 static struct btinfo_framebuffer btinfo_framebuffer; 138 139 static struct btinfo_modulelist *btinfo_modulelist; 140 static size_t btinfo_modulelist_size; 141 static uint32_t image_end; 142 static char module_base[64] = "/"; 143 static int howto; 144 145 static struct btinfo_userconfcommands *btinfo_userconfcommands = NULL; 146 static size_t btinfo_userconfcommands_size = 0; 147 148 static void module_init(const char *); 149 static void module_add_common(const char *, uint8_t); 150 151 static void userconf_init(void); 152 153 static void extract_device(const char *, char *, size_t); 154 static void module_base_path(char *, size_t); 155 static int module_open(boot_module_t *, int, const char *, const char *, 156 bool); 157 158 void 159 framebuffer_configure(struct btinfo_framebuffer *fb) 160 { 161 if (fb) 162 btinfo_framebuffer = *fb; 163 else { 164 btinfo_framebuffer.physaddr = 0; 165 btinfo_framebuffer.flags = 0; 166 } 167 } 168 169 void 170 module_add(char *name) 171 { 172 return module_add_common(name, BM_TYPE_KMOD); 173 } 174 175 void 176 splash_add(char *name) 177 { 178 return module_add_common(name, BM_TYPE_IMAGE); 179 } 180 181 void 182 rnd_add(char *name) 183 { 184 return module_add_common(name, BM_TYPE_RND); 185 } 186 187 void 188 fs_add(char *name) 189 { 190 return module_add_common(name, BM_TYPE_FS); 191 } 192 193 static void 194 module_add_common(const char *name, uint8_t type) 195 { 196 boot_module_t *bm, *bmp; 197 size_t len; 198 char *str; 199 200 while (*name == ' ' || *name == '\t') 201 ++name; 202 203 for (bm = boot_modules; bm != NULL; bm = bm->bm_next) 204 if (bm->bm_type == type && strcmp(bm->bm_path, name) == 0) 205 return; 206 207 bm = alloc(sizeof(boot_module_t)); 208 len = strlen(name) + 1; 209 str = alloc(len); 210 if (bm == NULL || str == NULL) { 211 printf("couldn't allocate module\n"); 212 return; 213 } 214 memcpy(str, name, len); 215 bm->bm_path = str; 216 bm->bm_next = NULL; 217 bm->bm_type = type; 218 if (boot_modules == NULL) 219 boot_modules = bm; 220 else { 221 for (bmp = boot_modules; bmp->bm_next; 222 bmp = bmp->bm_next) 223 ; 224 bmp->bm_next = bm; 225 } 226 } 227 228 void 229 userconf_add(char *cmd) 230 { 231 userconf_command_t *uc; 232 size_t len; 233 char *text; 234 235 while (*cmd == ' ' || *cmd == '\t') 236 ++cmd; 237 238 uc = alloc(sizeof(*uc)); 239 if (uc == NULL) { 240 printf("couldn't allocate command\n"); 241 return; 242 } 243 244 len = strlen(cmd) + 1; 245 text = alloc(len); 246 if (text == NULL) { 247 dealloc(uc, sizeof(*uc)); 248 printf("couldn't allocate command\n"); 249 return; 250 } 251 memcpy(text, cmd, len); 252 253 uc->uc_text = text; 254 uc->uc_len = len; 255 uc->uc_next = NULL; 256 257 if (userconf_commands == NULL) 258 userconf_commands = uc; 259 else { 260 userconf_command_t *ucp; 261 for (ucp = userconf_commands; ucp->uc_next != NULL; 262 ucp = ucp->uc_next) 263 ; 264 ucp->uc_next = uc; 265 } 266 } 267 268 struct btinfo_prekern bi_prekern; 269 int has_prekern = 0; 270 271 static int 272 common_load_prekern(const char *file, u_long *basemem, u_long *extmem, 273 physaddr_t loadaddr, int floppy, u_long marks[MARK_MAX]) 274 { 275 paddr_t kernpa_start, kernpa_end; 276 char prekernpath[] = "/prekern"; 277 u_long prekern_start; 278 int fd, flags; 279 280 *extmem = getextmem(); 281 *basemem = getbasemem(); 282 283 marks[MARK_START] = loadaddr; 284 285 /* Load the prekern (static) */ 286 flags = LOAD_KERNEL & ~(LOAD_HDR|LOAD_SYM); 287 if ((fd = loadfile(prekernpath, marks, flags)) == -1) 288 return EIO; 289 close(fd); 290 291 prekern_start = marks[MARK_START]; 292 293 /* The kernel starts at 2MB. */ 294 marks[MARK_START] = loadaddr; 295 marks[MARK_END] = loadaddr + (1UL << 21); 296 kernpa_start = (1UL << 21); 297 298 /* Load the kernel (dynamic) */ 299 flags = (LOAD_KERNEL | LOAD_DYN) & ~(floppy ? LOAD_BACKWARDS : 0); 300 if ((fd = loadfile(file, marks, flags)) == -1) 301 return EIO; 302 close(fd); 303 304 kernpa_end = marks[MARK_END] - loadaddr; 305 306 /* If the root fs type is unusual, load its module. */ 307 if (fsmod != NULL) 308 module_add_common(fsmod, BM_TYPE_KMOD); 309 310 bi_prekern.kernpa_start = kernpa_start; 311 bi_prekern.kernpa_end = kernpa_end; 312 BI_ADD(&bi_prekern, BTINFO_PREKERN, sizeof(struct btinfo_prekern)); 313 314 /* 315 * Gather some information for the kernel. Do this after the 316 * "point of no return" to avoid memory leaks. 317 * (but before DOS might be trashed in the XMS case) 318 */ 319 #ifdef PASS_BIOSGEOM 320 bi_getbiosgeom(); 321 #endif 322 #ifdef PASS_MEMMAP 323 bi_getmemmap(); 324 #endif 325 326 marks[MARK_START] = prekern_start; 327 marks[MARK_END] = (((u_long)marks[MARK_END] + sizeof(int) - 1)) & 328 (-sizeof(int)); 329 image_end = marks[MARK_END]; 330 kernel_loaded = true; 331 332 return 0; 333 } 334 335 static int 336 common_load_kernel(const char *file, u_long *basemem, u_long *extmem, 337 physaddr_t loadaddr, int floppy, u_long marks[MARK_MAX]) 338 { 339 int fd; 340 #ifdef XMS 341 u_long xmsmem; 342 physaddr_t origaddr = loadaddr; 343 #endif 344 345 *extmem = getextmem(); 346 *basemem = getbasemem(); 347 348 #ifdef XMS 349 if ((getextmem1() == 0) && (xmsmem = checkxms())) { 350 u_long kernsize; 351 352 /* 353 * With "CONSERVATIVE_MEMDETECT", extmem is 0 because 354 * getextmem() is getextmem1(). Without, the "smart" 355 * methods could fail to report all memory as well. 356 * xmsmem is a few kB less than the actual size, but 357 * better than nothing. 358 */ 359 if (xmsmem > *extmem) 360 *extmem = xmsmem; 361 /* 362 * Get the size of the kernel 363 */ 364 marks[MARK_START] = loadaddr; 365 if ((fd = loadfile(file, marks, COUNT_KERNEL)) == -1) 366 return EIO; 367 close(fd); 368 369 kernsize = marks[MARK_END]; 370 kernsize = (kernsize + 1023) / 1024; 371 372 loadaddr = xmsalloc(kernsize); 373 if (!loadaddr) 374 return ENOMEM; 375 } 376 #endif 377 marks[MARK_START] = loadaddr; 378 if ((fd = loadfile(file, marks, 379 LOAD_KERNEL & ~(floppy ? LOAD_BACKWARDS : 0))) == -1) 380 return EIO; 381 382 close(fd); 383 384 /* If the root fs type is unusual, load its module. */ 385 if (fsmod != NULL) 386 module_add_common(fsmod, BM_TYPE_KMOD); 387 388 /* 389 * Gather some information for the kernel. Do this after the 390 * "point of no return" to avoid memory leaks. 391 * (but before DOS might be trashed in the XMS case) 392 */ 393 #ifdef PASS_BIOSGEOM 394 bi_getbiosgeom(); 395 #endif 396 #ifdef PASS_MEMMAP 397 bi_getmemmap(); 398 #endif 399 400 #ifdef XMS 401 if (loadaddr != origaddr) { 402 /* 403 * We now have done our last DOS IO, so we may 404 * trash the OS. Copy the data from the temporary 405 * buffer to its real address. 406 */ 407 marks[MARK_START] -= loadaddr; 408 marks[MARK_END] -= loadaddr; 409 marks[MARK_SYM] -= loadaddr; 410 marks[MARK_END] -= loadaddr; 411 ppbcopy(loadaddr, origaddr, marks[MARK_END]); 412 } 413 #endif 414 marks[MARK_END] = (((u_long) marks[MARK_END] + sizeof(int) - 1)) & 415 (-sizeof(int)); 416 image_end = marks[MARK_END]; 417 kernel_loaded = true; 418 419 return 0; 420 } 421 422 int 423 exec_netbsd(const char *file, physaddr_t loadaddr, int boothowto, int floppy, 424 void (*callback)(void)) 425 { 426 uint32_t boot_argv[BOOT_NARGS]; 427 u_long marks[MARK_MAX]; 428 struct btinfo_symtab btinfo_symtab; 429 u_long extmem; 430 u_long basemem; 431 int error; 432 #ifdef EFIBOOT 433 int i; 434 #endif 435 436 #ifdef DEBUG 437 printf("exec: file=%s loadaddr=0x%lx\n", file ? file : "NULL", 438 loadaddr); 439 #endif 440 441 BI_ALLOC(BTINFO_MAX); 442 443 BI_ADD(&btinfo_console, BTINFO_CONSOLE, sizeof(struct btinfo_console)); 444 445 howto = boothowto; 446 447 memset(marks, 0, sizeof(marks)); 448 449 if (has_prekern) { 450 error = common_load_prekern(file, &basemem, &extmem, loadaddr, 451 floppy, marks); 452 } else { 453 error = common_load_kernel(file, &basemem, &extmem, loadaddr, 454 floppy, marks); 455 } 456 if (error) { 457 errno = error; 458 goto out; 459 } 460 #ifdef EFIBOOT 461 /* adjust to the real load address */ 462 marks[MARK_START] -= efi_loadaddr; 463 marks[MARK_ENTRY] -= efi_loadaddr; 464 marks[MARK_DATA] -= efi_loadaddr; 465 /* MARK_NSYM */ 466 marks[MARK_SYM] -= efi_loadaddr; 467 marks[MARK_END] -= efi_loadaddr; 468 #endif 469 470 boot_argv[0] = boothowto; 471 boot_argv[1] = 0; 472 boot_argv[2] = vtophys(bootinfo); /* old cyl offset */ 473 boot_argv[3] = marks[MARK_END]; 474 boot_argv[4] = extmem; 475 boot_argv[5] = basemem; 476 477 /* pull in any modules if necessary */ 478 if (boot_modules_enabled) { 479 module_init(file); 480 if (btinfo_modulelist) { 481 #ifdef EFIBOOT 482 /* convert module loaded address to paddr */ 483 struct bi_modulelist_entry *bim; 484 bim = (void *)(btinfo_modulelist + 1); 485 for (i = 0; i < btinfo_modulelist->num; i++, bim++) 486 bim->base -= efi_loadaddr; 487 btinfo_modulelist->endpa -= efi_loadaddr; 488 #endif 489 BI_ADD(btinfo_modulelist, BTINFO_MODULELIST, 490 btinfo_modulelist_size); 491 } 492 } 493 494 userconf_init(); 495 if (btinfo_userconfcommands != NULL) 496 BI_ADD(btinfo_userconfcommands, BTINFO_USERCONFCOMMANDS, 497 btinfo_userconfcommands_size); 498 499 #ifdef DEBUG 500 printf("Start @ 0x%lx [%ld=0x%lx-0x%lx]...\n", marks[MARK_ENTRY], 501 marks[MARK_NSYM], marks[MARK_SYM], marks[MARK_END]); 502 #endif 503 504 btinfo_symtab.nsym = marks[MARK_NSYM]; 505 btinfo_symtab.ssym = marks[MARK_SYM]; 506 btinfo_symtab.esym = marks[MARK_END]; 507 BI_ADD(&btinfo_symtab, BTINFO_SYMTAB, sizeof(struct btinfo_symtab)); 508 509 /* set new video mode if necessary */ 510 vbe_commit(); 511 BI_ADD(&btinfo_framebuffer, BTINFO_FRAMEBUFFER, 512 sizeof(struct btinfo_framebuffer)); 513 514 if (callback != NULL) 515 (*callback)(); 516 #ifdef EFIBOOT 517 /* Copy bootinfo to safe arena. */ 518 for (i = 0; i < bootinfo->nentries; i++) { 519 struct btinfo_common *bi = (void *)(u_long)bootinfo->entry[i]; 520 char *p = alloc(bi->len); 521 memcpy(p, bi, bi->len); 522 bootinfo->entry[i] = vtophys(p); 523 } 524 525 efi_kernel_start = marks[MARK_START]; 526 efi_kernel_size = image_end - (efi_loadaddr + efi_kernel_start); 527 #endif 528 startprog(marks[MARK_ENTRY], BOOT_NARGS, boot_argv, 529 x86_trunc_page(basemem * 1024)); 530 panic("exec returned"); 531 532 out: 533 BI_FREE(); 534 bootinfo = NULL; 535 return -1; 536 } 537 538 int 539 count_netbsd(const char *file, u_long *rsz) 540 { 541 u_long marks[MARK_MAX]; 542 char kdev[64]; 543 char base_path[64] = "/"; 544 struct stat st; 545 boot_module_t *bm; 546 u_long sz; 547 int err, fd; 548 549 if (has_prekern) { 550 /* 551 * Hardcoded for now. Need to count both the prekern and the 552 * kernel. 128MB is enough in all cases, so use that. 553 */ 554 *rsz = (128UL << 20); 555 return 0; 556 } 557 558 howto = AB_SILENT; 559 560 memset(marks, 0, sizeof(marks)); 561 if ((fd = loadfile(file, marks, COUNT_KERNEL | LOAD_NOTE)) == -1) 562 return -1; 563 close(fd); 564 marks[MARK_END] = (((u_long) marks[MARK_END] + sizeof(int) - 1)) & 565 (-sizeof(int)); 566 sz = marks[MARK_END]; 567 568 /* The modules must be allocated after the kernel */ 569 if (boot_modules_enabled) { 570 extract_device(file, kdev, sizeof(kdev)); 571 module_base_path(base_path, sizeof(base_path)); 572 573 /* If the root fs type is unusual, load its module. */ 574 if (fsmod != NULL) 575 module_add_common(fsmod, BM_TYPE_KMOD); 576 577 for (bm = boot_modules; bm; bm = bm->bm_next) { 578 fd = module_open(bm, 0, kdev, base_path, false); 579 if (fd == -1) 580 continue; 581 sz = (sz + PAGE_SIZE - 1) & ~(PAGE_SIZE - 1); 582 err = fstat(fd, &st); 583 if (err == -1 || st.st_size == -1) { 584 close(fd); 585 continue; 586 } 587 sz += st.st_size; 588 close(fd); 589 } 590 } 591 592 *rsz = sz; 593 return 0; 594 } 595 596 static void 597 extract_device(const char *path, char *buf, size_t buflen) 598 { 599 size_t i; 600 601 if (strchr(path, ':') != NULL) { 602 for (i = 0; i < buflen - 2 && path[i] != ':'; i++) 603 buf[i] = path[i]; 604 buf[i++] = ':'; 605 buf[i] = '\0'; 606 } else 607 buf[0] = '\0'; 608 } 609 610 static const char * 611 module_path(boot_module_t *bm, const char *kdev, const char *base_path) 612 { 613 static char buf[256]; 614 char name_buf[256], dev_buf[64]; 615 const char *name, *name2, *p; 616 617 name = bm->bm_path; 618 for (name2 = name; *name2; ++name2) { 619 if (*name2 == ' ' || *name2 == '\t') { 620 strlcpy(name_buf, name, sizeof(name_buf)); 621 if ((uintptr_t)name2 - (uintptr_t)name < sizeof(name_buf)) 622 name_buf[name2 - name] = '\0'; 623 name = name_buf; 624 break; 625 } 626 } 627 if ((p = strchr(name, ':')) != NULL) { 628 /* device specified, use it */ 629 if (p[1] == '/') 630 snprintf(buf, sizeof(buf), "%s", name); 631 else { 632 p++; 633 extract_device(name, dev_buf, sizeof(dev_buf)); 634 snprintf(buf, sizeof(buf), "%s%s/%s/%s.kmod", 635 dev_buf, base_path, p, p); 636 } 637 } else { 638 /* device not specified; load from kernel device if known */ 639 if (name[0] == '/') 640 snprintf(buf, sizeof(buf), "%s%s", kdev, name); 641 else 642 snprintf(buf, sizeof(buf), "%s%s/%s/%s.kmod", 643 kdev, base_path, name, name); 644 } 645 646 return buf; 647 } 648 649 static int 650 module_open(boot_module_t *bm, int mode, const char *kdev, 651 const char *base_path, bool doload) 652 { 653 int fd; 654 const char *path; 655 656 /* check the expanded path first */ 657 path = module_path(bm, kdev, base_path); 658 fd = open(path, mode); 659 if (fd != -1) { 660 if ((howto & AB_SILENT) == 0 && doload) 661 printf("Loading %s ", path); 662 } else { 663 /* now attempt the raw path provided */ 664 fd = open(bm->bm_path, mode); 665 if (fd != -1 && (howto & AB_SILENT) == 0 && doload) 666 printf("Loading %s ", bm->bm_path); 667 } 668 if (!doload && fd == -1) { 669 printf("WARNING: couldn't open %s", bm->bm_path); 670 if (strcmp(bm->bm_path, path) != 0) 671 printf(" (%s)", path); 672 printf("\n"); 673 } 674 return fd; 675 } 676 677 static void 678 module_base_path(char *buf, size_t bufsize) 679 { 680 const char *machine; 681 682 switch (netbsd_elf_class) { 683 case ELFCLASS32: 684 machine = "i386"; 685 break; 686 case ELFCLASS64: 687 machine = "amd64"; 688 break; 689 default: 690 machine = "generic"; 691 break; 692 } 693 if (netbsd_version / 1000000 % 100 == 99) { 694 /* -current */ 695 snprintf(buf, bufsize, 696 "/stand/%s/%d.%d.%d/modules", machine, 697 netbsd_version / 100000000, 698 netbsd_version / 1000000 % 100, 699 netbsd_version / 100 % 100); 700 } else if (netbsd_version != 0) { 701 /* release */ 702 snprintf(buf, bufsize, 703 "/stand/%s/%d.%d/modules", machine, 704 netbsd_version / 100000000, 705 netbsd_version / 1000000 % 100); 706 } 707 } 708 709 static void 710 module_init(const char *kernel_path) 711 { 712 struct bi_modulelist_entry *bi; 713 struct stat st; 714 char kdev[64]; 715 char *buf; 716 boot_module_t *bm; 717 ssize_t len; 718 off_t off; 719 int err, fd, nfail = 0; 720 721 extract_device(kernel_path, kdev, sizeof(kdev)); 722 module_base_path(module_base, sizeof(module_base)); 723 724 /* First, see which modules are valid and calculate btinfo size */ 725 len = sizeof(struct btinfo_modulelist); 726 for (bm = boot_modules; bm; bm = bm->bm_next) { 727 fd = module_open(bm, 0, kdev, module_base, false); 728 if (fd == -1) { 729 bm->bm_len = -1; 730 ++nfail; 731 continue; 732 } 733 err = fstat(fd, &st); 734 if (err == -1 || st.st_size == -1) { 735 printf("WARNING: couldn't stat %s\n", bm->bm_path); 736 close(fd); 737 bm->bm_len = -1; 738 ++nfail; 739 continue; 740 } 741 bm->bm_len = st.st_size; 742 close(fd); 743 len += sizeof(struct bi_modulelist_entry); 744 } 745 746 /* Allocate the module list */ 747 btinfo_modulelist = alloc(len); 748 if (btinfo_modulelist == NULL) { 749 printf("WARNING: couldn't allocate module list\n"); 750 wait_sec(MODULE_WARNING_SEC); 751 return; 752 } 753 memset(btinfo_modulelist, 0, len); 754 btinfo_modulelist_size = len; 755 756 /* Fill in btinfo structure */ 757 buf = (char *)btinfo_modulelist; 758 btinfo_modulelist->num = 0; 759 off = sizeof(struct btinfo_modulelist); 760 761 for (bm = boot_modules; bm; bm = bm->bm_next) { 762 if (bm->bm_len == -1) 763 continue; 764 fd = module_open(bm, 0, kdev, module_base, true); 765 if (fd == -1) 766 continue; 767 image_end = (image_end + PAGE_SIZE - 1) & ~(PAGE_SIZE - 1); 768 len = pread(fd, (void *)(uintptr_t)image_end, SSIZE_MAX); 769 if (len < bm->bm_len) { 770 if ((howto & AB_SILENT) != 0) 771 printf("Loading %s ", bm->bm_path); 772 printf(" FAILED\n"); 773 } else { 774 btinfo_modulelist->num++; 775 bi = (struct bi_modulelist_entry *)(buf + off); 776 off += sizeof(struct bi_modulelist_entry); 777 strncpy(bi->path, bm->bm_path, sizeof(bi->path) - 1); 778 bi->base = image_end; 779 bi->len = len; 780 switch (bm->bm_type) { 781 case BM_TYPE_KMOD: 782 bi->type = BI_MODULE_ELF; 783 break; 784 case BM_TYPE_IMAGE: 785 bi->type = BI_MODULE_IMAGE; 786 break; 787 case BM_TYPE_FS: 788 bi->type = BI_MODULE_FS; 789 break; 790 case BM_TYPE_RND: 791 default: 792 /* safest -- rnd checks the sha1 */ 793 bi->type = BI_MODULE_RND; 794 break; 795 } 796 if ((howto & AB_SILENT) == 0) 797 printf(" \n"); 798 } 799 if (len > 0) 800 image_end += len; 801 close(fd); 802 } 803 btinfo_modulelist->endpa = image_end; 804 805 if (nfail > 0) { 806 printf("WARNING: %d module%s failed to load\n", 807 nfail, nfail == 1 ? "" : "s"); 808 #if notyet 809 wait_sec(MODULE_WARNING_SEC); 810 #endif 811 } 812 } 813 814 static void 815 userconf_init(void) 816 { 817 size_t count, len; 818 userconf_command_t *uc; 819 char *buf; 820 off_t off; 821 822 /* Calculate the userconf commands list size */ 823 count = 0; 824 for (uc = userconf_commands; uc != NULL; uc = uc->uc_next) 825 count++; 826 len = sizeof(*btinfo_userconfcommands) + 827 count * sizeof(struct bi_userconfcommand); 828 829 /* Allocate the userconf commands list */ 830 btinfo_userconfcommands = alloc(len); 831 if (btinfo_userconfcommands == NULL) { 832 printf("WARNING: couldn't allocate userconf commands list\n"); 833 return; 834 } 835 memset(btinfo_userconfcommands, 0, len); 836 btinfo_userconfcommands_size = len; 837 838 /* Fill in btinfo structure */ 839 buf = (char *)btinfo_userconfcommands; 840 off = sizeof(*btinfo_userconfcommands); 841 btinfo_userconfcommands->num = 0; 842 for (uc = userconf_commands; uc != NULL; uc = uc->uc_next) { 843 struct bi_userconfcommand *bi; 844 bi = (struct bi_userconfcommand *)(buf + off); 845 strncpy(bi->text, uc->uc_text, sizeof(bi->text) - 1); 846 847 off += sizeof(*bi); 848 btinfo_userconfcommands->num++; 849 } 850 } 851 852 int 853 exec_multiboot(const char *file, char *args) 854 { 855 struct multiboot_info *mbi; 856 struct multiboot_module *mbm; 857 struct bi_modulelist_entry *bim; 858 int i, len; 859 u_long marks[MARK_MAX]; 860 u_long extmem; 861 u_long basemem; 862 char *cmdline; 863 864 mbi = alloc(sizeof(struct multiboot_info)); 865 mbi->mi_flags = MULTIBOOT_INFO_HAS_MEMORY; 866 867 if (common_load_kernel(file, &basemem, &extmem, 0, 0, marks)) 868 goto out; 869 870 mbi->mi_mem_upper = extmem; 871 mbi->mi_mem_lower = basemem; 872 873 if (args) { 874 mbi->mi_flags |= MULTIBOOT_INFO_HAS_CMDLINE; 875 len = strlen(file) + 1 + strlen(args) + 1; 876 cmdline = alloc(len); 877 snprintf(cmdline, len, "%s %s", file, args); 878 mbi->mi_cmdline = (char *) vtophys(cmdline); 879 } 880 881 /* pull in any modules if necessary */ 882 if (boot_modules_enabled) { 883 module_init(file); 884 if (btinfo_modulelist) { 885 mbm = alloc(sizeof(struct multiboot_module) * 886 btinfo_modulelist->num); 887 888 bim = (struct bi_modulelist_entry *) 889 (((char *) btinfo_modulelist) + 890 sizeof(struct btinfo_modulelist)); 891 for (i = 0; i < btinfo_modulelist->num; i++) { 892 mbm[i].mmo_start = bim->base; 893 mbm[i].mmo_end = bim->base + bim->len; 894 mbm[i].mmo_string = (char *)vtophys(bim->path); 895 mbm[i].mmo_reserved = 0; 896 bim++; 897 } 898 mbi->mi_flags |= MULTIBOOT_INFO_HAS_MODS; 899 mbi->mi_mods_count = btinfo_modulelist->num; 900 mbi->mi_mods_addr = vtophys(mbm); 901 } 902 } 903 904 #ifdef DEBUG 905 printf("Start @ 0x%lx [%ld=0x%lx-0x%lx]...\n", marks[MARK_ENTRY], 906 marks[MARK_NSYM], marks[MARK_SYM], marks[MARK_END]); 907 #endif 908 909 #if 0 910 if (btinfo_symtab.nsym) { 911 mbi->mi_flags |= MULTIBOOT_INFO_HAS_ELF_SYMS; 912 mbi->mi_elfshdr_addr = marks[MARK_SYM]; 913 btinfo_symtab.nsym = marks[MARK_NSYM]; 914 btinfo_symtab.ssym = marks[MARK_SYM]; 915 btinfo_symtab.esym = marks[MARK_END]; 916 #endif 917 918 multiboot(marks[MARK_ENTRY], vtophys(mbi), 919 x86_trunc_page(mbi->mi_mem_lower * 1024)); 920 panic("exec returned"); 921 922 out: 923 dealloc(mbi, 0); 924 return -1; 925 } 926 927 void 928 x86_progress(const char *fmt, ...) 929 { 930 va_list ap; 931 932 if ((howto & AB_SILENT) != 0) 933 return; 934 va_start(ap, fmt); 935 vprintf(fmt, ap); 936 va_end(ap); 937 } 938
Indexes created Thu Oct 02 14:10:14 GMT 2025