exec.c revision 1.69.4.1
1 /* $NetBSD: exec.c,v 1.69.4.1 2020/04/08 14:07:41 martin 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 #include <sys/reboot.h> 98 99 #include <i386/multiboot.h> 100 101 #include <lib/libsa/stand.h> 102 #include <lib/libkern/libkern.h> 103 104 #include "loadfile.h" 105 #include "libi386.h" 106 #include "bootinfo.h" 107 #include "bootmod.h" 108 #include "vbe.h" 109 #ifdef SUPPORT_PS2 110 #include "biosmca.h" 111 #endif 112 #ifdef EFIBOOT 113 #include "efiboot.h" 114 #undef DEBUG /* XXX */ 115 #endif 116 117 #define BOOT_NARGS 6 118 119 #ifndef PAGE_SIZE 120 #define PAGE_SIZE 4096 121 #endif 122 123 #define MODULE_WARNING_SEC 5 124 125 extern struct btinfo_console btinfo_console; 126 127 boot_module_t *boot_modules; 128 bool boot_modules_enabled = true; 129 bool kernel_loaded; 130 131 typedef struct userconf_command { 132 char *uc_text; 133 size_t uc_len; 134 struct userconf_command *uc_next; 135 } userconf_command_t; 136 userconf_command_t *userconf_commands = NULL; 137 138 static struct btinfo_framebuffer btinfo_framebuffer; 139 140 static struct btinfo_modulelist *btinfo_modulelist; 141 static size_t btinfo_modulelist_size; 142 static uint32_t image_end; 143 static char module_base[64] = "/"; 144 static int howto; 145 146 static struct btinfo_userconfcommands *btinfo_userconfcommands = NULL; 147 static size_t btinfo_userconfcommands_size = 0; 148 149 static void module_init(const char *); 150 static void module_add_common(const char *, uint8_t); 151 152 static void userconf_init(void); 153 154 static void extract_device(const char *, char *, size_t); 155 static void module_base_path(char *, size_t, const char *); 156 static int module_open(boot_module_t *, int, const char *, const char *, 157 bool); 158 159 void 160 framebuffer_configure(struct btinfo_framebuffer *fb) 161 { 162 if (fb) 163 btinfo_framebuffer = *fb; 164 else { 165 btinfo_framebuffer.physaddr = 0; 166 btinfo_framebuffer.flags = 0; 167 } 168 } 169 170 void 171 module_add(char *name) 172 { 173 return module_add_common(name, BM_TYPE_KMOD); 174 } 175 176 void 177 splash_add(char *name) 178 { 179 return module_add_common(name, BM_TYPE_IMAGE); 180 } 181 182 void 183 rnd_add(char *name) 184 { 185 return module_add_common(name, BM_TYPE_RND); 186 } 187 188 void 189 fs_add(char *name) 190 { 191 return module_add_common(name, BM_TYPE_FS); 192 } 193 194 static void 195 module_add_common(const char *name, uint8_t type) 196 { 197 boot_module_t *bm, *bmp; 198 size_t len; 199 char *str; 200 201 while (*name == ' ' || *name == '\t') 202 ++name; 203 204 for (bm = boot_modules; bm != NULL; bm = bm->bm_next) 205 if (bm->bm_type == type && strcmp(bm->bm_path, name) == 0) 206 return; 207 208 bm = alloc(sizeof(boot_module_t)); 209 len = strlen(name) + 1; 210 str = alloc(len); 211 if (bm == NULL || str == NULL) { 212 printf("couldn't allocate module\n"); 213 return; 214 } 215 memcpy(str, name, len); 216 bm->bm_path = str; 217 bm->bm_next = NULL; 218 bm->bm_type = type; 219 if (boot_modules == NULL) 220 boot_modules = bm; 221 else { 222 for (bmp = boot_modules; bmp->bm_next; 223 bmp = bmp->bm_next) 224 ; 225 bmp->bm_next = bm; 226 } 227 } 228 229 void 230 userconf_add(char *cmd) 231 { 232 userconf_command_t *uc; 233 size_t len; 234 char *text; 235 236 while (*cmd == ' ' || *cmd == '\t') 237 ++cmd; 238 239 uc = alloc(sizeof(*uc)); 240 if (uc == NULL) { 241 printf("couldn't allocate command\n"); 242 return; 243 } 244 245 len = strlen(cmd) + 1; 246 text = alloc(len); 247 if (text == NULL) { 248 dealloc(uc, sizeof(*uc)); 249 printf("couldn't allocate command\n"); 250 return; 251 } 252 memcpy(text, cmd, len); 253 254 uc->uc_text = text; 255 uc->uc_len = len; 256 uc->uc_next = NULL; 257 258 if (userconf_commands == NULL) 259 userconf_commands = uc; 260 else { 261 userconf_command_t *ucp; 262 for (ucp = userconf_commands; ucp->uc_next != NULL; 263 ucp = ucp->uc_next) 264 ; 265 ucp->uc_next = uc; 266 } 267 } 268 269 struct btinfo_prekern bi_prekern; 270 int has_prekern = 0; 271 272 static int 273 common_load_prekern(const char *file, u_long *basemem, u_long *extmem, 274 physaddr_t loadaddr, int floppy, u_long marks[MARK_MAX]) 275 { 276 paddr_t kernpa_start, kernpa_end; 277 char prekernpath[] = "/prekern"; 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|COUNT_HDR|LOAD_SYM|COUNT_SYM); 287 if ((fd = loadfile(prekernpath, marks, flags)) == -1) 288 return errno; 289 close(fd); 290 291 marks[MARK_END] = (1UL << 21); /* the kernel starts at 2MB XXX */ 292 kernpa_start = marks[MARK_END]; 293 294 /* Load the kernel (dynamic) */ 295 flags = (LOAD_KERNEL | LOAD_DYN) & ~(floppy ? LOAD_BACKWARDS : 0); 296 if ((fd = loadfile(file, marks, flags)) == -1) 297 return errno; 298 close(fd); 299 300 kernpa_end = marks[MARK_END]; 301 302 /* If the root fs type is unusual, load its module. */ 303 if (fsmod != NULL) 304 module_add_common(fsmod, BM_TYPE_KMOD); 305 306 bi_prekern.kernpa_start = kernpa_start; 307 bi_prekern.kernpa_end = kernpa_end; 308 BI_ADD(&bi_prekern, BTINFO_PREKERN, sizeof(struct btinfo_prekern)); 309 310 /* 311 * Gather some information for the kernel. Do this after the 312 * "point of no return" to avoid memory leaks. 313 * (but before DOS might be trashed in the XMS case) 314 */ 315 #ifdef PASS_BIOSGEOM 316 bi_getbiosgeom(); 317 #endif 318 #ifdef PASS_MEMMAP 319 bi_getmemmap(); 320 #endif 321 322 marks[MARK_END] = (((u_long)marks[MARK_END] + sizeof(int) - 1)) & 323 (-sizeof(int)); 324 image_end = marks[MARK_END]; 325 kernel_loaded = true; 326 327 return 0; 328 } 329 330 static int 331 common_load_kernel(const char *file, u_long *basemem, u_long *extmem, 332 physaddr_t loadaddr, int floppy, u_long marks[MARK_MAX]) 333 { 334 int fd; 335 #ifdef XMS 336 u_long xmsmem; 337 physaddr_t origaddr = loadaddr; 338 #endif 339 340 *extmem = getextmem(); 341 *basemem = getbasemem(); 342 343 #ifdef XMS 344 if ((getextmem1() == 0) && (xmsmem = checkxms())) { 345 u_long kernsize; 346 347 /* 348 * With "CONSERVATIVE_MEMDETECT", extmem is 0 because 349 * getextmem() is getextmem1(). Without, the "smart" 350 * methods could fail to report all memory as well. 351 * xmsmem is a few kB less than the actual size, but 352 * better than nothing. 353 */ 354 if (xmsmem > *extmem) 355 *extmem = xmsmem; 356 /* 357 * Get the size of the kernel 358 */ 359 marks[MARK_START] = loadaddr; 360 if ((fd = loadfile(file, marks, COUNT_KERNEL)) == -1) 361 return errno; 362 close(fd); 363 364 kernsize = marks[MARK_END]; 365 kernsize = (kernsize + 1023) / 1024; 366 367 loadaddr = xmsalloc(kernsize); 368 if (!loadaddr) 369 return ENOMEM; 370 } 371 #endif 372 marks[MARK_START] = loadaddr; 373 if ((fd = loadfile(file, marks, 374 LOAD_KERNEL & ~(floppy ? LOAD_BACKWARDS : 0))) == -1) 375 return errno; 376 377 close(fd); 378 379 /* If the root fs type is unusual, load its module. */ 380 if (fsmod != NULL) 381 module_add_common(fsmod, BM_TYPE_KMOD); 382 383 /* 384 * Gather some information for the kernel. Do this after the 385 * "point of no return" to avoid memory leaks. 386 * (but before DOS might be trashed in the XMS case) 387 */ 388 #ifdef PASS_BIOSGEOM 389 bi_getbiosgeom(); 390 #endif 391 #ifdef PASS_MEMMAP 392 bi_getmemmap(); 393 #endif 394 395 #ifdef XMS 396 if (loadaddr != origaddr) { 397 /* 398 * We now have done our last DOS IO, so we may 399 * trash the OS. Copy the data from the temporary 400 * buffer to its real address. 401 */ 402 marks[MARK_START] -= loadaddr; 403 marks[MARK_END] -= loadaddr; 404 marks[MARK_SYM] -= loadaddr; 405 marks[MARK_END] -= loadaddr; 406 ppbcopy(loadaddr, origaddr, marks[MARK_END]); 407 } 408 #endif 409 marks[MARK_END] = (((u_long) marks[MARK_END] + sizeof(int) - 1)) & 410 (-sizeof(int)); 411 image_end = marks[MARK_END]; 412 kernel_loaded = true; 413 414 return 0; 415 } 416 417 int 418 exec_netbsd(const char *file, physaddr_t loadaddr, int boothowto, int floppy, 419 void (*callback)(void)) 420 { 421 uint32_t boot_argv[BOOT_NARGS]; 422 u_long marks[MARK_MAX]; 423 struct btinfo_symtab btinfo_symtab; 424 u_long extmem; 425 u_long basemem; 426 int error; 427 #ifdef EFIBOOT 428 int i; 429 #endif 430 431 #ifdef DEBUG 432 printf("exec: file=%s loadaddr=0x%lx\n", file ? file : "NULL", 433 loadaddr); 434 #endif 435 436 BI_ALLOC(BTINFO_MAX); 437 438 BI_ADD(&btinfo_console, BTINFO_CONSOLE, sizeof(struct btinfo_console)); 439 440 howto = boothowto; 441 442 memset(marks, 0, sizeof(marks)); 443 444 if (has_prekern) { 445 error = common_load_prekern(file, &basemem, &extmem, loadaddr, 446 floppy, marks); 447 } else { 448 error = common_load_kernel(file, &basemem, &extmem, loadaddr, 449 floppy, marks); 450 } 451 if (error) { 452 errno = error; 453 goto out; 454 } 455 #ifdef EFIBOOT 456 /* adjust to the real load address */ 457 marks[MARK_START] -= efi_loadaddr; 458 marks[MARK_ENTRY] -= efi_loadaddr; 459 marks[MARK_DATA] -= efi_loadaddr; 460 /* MARK_NSYM */ 461 marks[MARK_SYM] -= efi_loadaddr; 462 marks[MARK_END] -= efi_loadaddr; 463 #endif 464 465 boot_argv[0] = boothowto; 466 boot_argv[1] = 0; 467 boot_argv[2] = vtophys(bootinfo); /* old cyl offset */ 468 boot_argv[3] = marks[MARK_END]; 469 boot_argv[4] = extmem; 470 boot_argv[5] = basemem; 471 472 /* pull in any modules if necessary */ 473 if (boot_modules_enabled) { 474 module_init(file); 475 if (btinfo_modulelist) { 476 #ifdef EFIBOOT 477 /* convert module loaded address to paddr */ 478 struct bi_modulelist_entry *bim; 479 bim = (void *)(btinfo_modulelist + 1); 480 for (i = 0; i < btinfo_modulelist->num; i++, bim++) 481 bim->base -= efi_loadaddr; 482 btinfo_modulelist->endpa -= efi_loadaddr; 483 #endif 484 BI_ADD(btinfo_modulelist, BTINFO_MODULELIST, 485 btinfo_modulelist_size); 486 } 487 } 488 489 userconf_init(); 490 if (btinfo_userconfcommands != NULL) 491 BI_ADD(btinfo_userconfcommands, BTINFO_USERCONFCOMMANDS, 492 btinfo_userconfcommands_size); 493 494 #ifdef DEBUG 495 printf("Start @ 0x%lx [%ld=0x%lx-0x%lx]...\n", marks[MARK_ENTRY], 496 marks[MARK_NSYM], marks[MARK_SYM], marks[MARK_END]); 497 #endif 498 499 btinfo_symtab.nsym = marks[MARK_NSYM]; 500 btinfo_symtab.ssym = marks[MARK_SYM]; 501 btinfo_symtab.esym = marks[MARK_END]; 502 BI_ADD(&btinfo_symtab, BTINFO_SYMTAB, sizeof(struct btinfo_symtab)); 503 504 /* set new video mode if necessary */ 505 vbe_commit(); 506 BI_ADD(&btinfo_framebuffer, BTINFO_FRAMEBUFFER, 507 sizeof(struct btinfo_framebuffer)); 508 509 if (callback != NULL) 510 (*callback)(); 511 #ifdef EFIBOOT 512 /* Copy bootinfo to safe arena. */ 513 for (i = 0; i < bootinfo->nentries; i++) { 514 struct btinfo_common *bi = (void *)(u_long)bootinfo->entry[i]; 515 char *p = alloc(bi->len); 516 memcpy(p, bi, bi->len); 517 bootinfo->entry[i] = vtophys(p); 518 } 519 520 efi_kernel_start = marks[MARK_START]; 521 efi_kernel_size = image_end - efi_loadaddr - efi_kernel_start; 522 #endif 523 startprog(marks[MARK_ENTRY], BOOT_NARGS, boot_argv, 524 x86_trunc_page(basemem * 1024)); 525 panic("exec returned"); 526 527 out: 528 BI_FREE(); 529 bootinfo = NULL; 530 return -1; 531 } 532 533 int 534 count_netbsd(const char *file, u_long *rsz) 535 { 536 u_long marks[MARK_MAX]; 537 char kdev[64]; 538 char base_path[64] = "/"; 539 struct stat st; 540 boot_module_t *bm; 541 u_long sz; 542 int err, fd; 543 544 howto = AB_SILENT; 545 546 memset(marks, 0, sizeof(marks)); 547 if ((fd = loadfile(file, marks, COUNT_KERNEL | LOAD_NOTE)) == -1) 548 return -1; 549 close(fd); 550 marks[MARK_END] = (((u_long) marks[MARK_END] + sizeof(int) - 1)) & 551 (-sizeof(int)); 552 sz = marks[MARK_END]; 553 554 /* The modules must be allocated after the kernel */ 555 if (boot_modules_enabled) { 556 extract_device(file, kdev, sizeof(kdev)); 557 module_base_path(base_path, sizeof(base_path)); 558 559 /* If the root fs type is unusual, load its module. */ 560 if (fsmod != NULL) 561 module_add_common(fsmod, BM_TYPE_KMOD); 562 563 for (bm = boot_modules; bm; bm = bm->bm_next) { 564 fd = module_open(bm, 0, kdev, base_path, false); 565 if (fd == -1) 566 continue; 567 sz = (sz + PAGE_SIZE - 1) & ~(PAGE_SIZE - 1); 568 err = fstat(fd, &st); 569 if (err == -1 || st.st_size == -1) { 570 close(fd); 571 continue; 572 } 573 sz += st.st_size; 574 close(fd); 575 } 576 } 577 578 *rsz = sz; 579 return 0; 580 } 581 582 static void 583 extract_device(const char *path, char *buf, size_t buflen) 584 { 585 size_t i; 586 587 if (strchr(path, ':') != NULL) { 588 for (i = 0; i < buflen - 2 && path[i] != ':'; i++) 589 buf[i] = path[i]; 590 buf[i++] = ':'; 591 buf[i] = '\0'; 592 } else 593 buf[0] = '\0'; 594 } 595 596 static const char * 597 module_path(boot_module_t *bm, const char *kdev, const char *base_path) 598 { 599 static char buf[256]; 600 char name_buf[256], dev_buf[64]; 601 const char *name, *name2, *p; 602 603 name = bm->bm_path; 604 for (name2 = name; *name2; ++name2) { 605 if (*name2 == ' ' || *name2 == '\t') { 606 strlcpy(name_buf, name, sizeof(name_buf)); 607 if ((uintptr_t)name2 - (uintptr_t)name < sizeof(name_buf)) 608 name_buf[name2 - name] = '\0'; 609 name = name_buf; 610 break; 611 } 612 } 613 if ((p = strchr(name, ':')) != NULL) { 614 /* device specified, use it */ 615 if (p[1] == '/') 616 snprintf(buf, sizeof(buf), "%s", name); 617 else { 618 p++; 619 extract_device(name, dev_buf, sizeof(dev_buf)); 620 snprintf(buf, sizeof(buf), "%s%s/%s/%s.kmod", 621 dev_buf, base_path, p, p); 622 } 623 } else { 624 /* device not specified; load from kernel device if known */ 625 if (name[0] == '/') 626 snprintf(buf, sizeof(buf), "%s%s", kdev, name); 627 else 628 snprintf(buf, sizeof(buf), "%s%s/%s/%s.kmod", 629 kdev, base_path, name, name); 630 } 631 632 return buf; 633 } 634 635 static int 636 module_open(boot_module_t *bm, int mode, const char *kdev, 637 const char *base_path, bool doload) 638 { 639 int fd; 640 const char *path; 641 642 /* check the expanded path first */ 643 path = module_path(bm, kdev, base_path); 644 fd = open(path, mode); 645 if (fd != -1) { 646 if ((howto & AB_SILENT) == 0 && doload) 647 printf("Loading %s ", path); 648 } else { 649 /* now attempt the raw path provided */ 650 fd = open(bm->bm_path, mode); 651 if (fd != -1 && (howto & AB_SILENT) == 0 && doload) 652 printf("Loading %s ", bm->bm_path); 653 } 654 if (!doload && fd == -1) { 655 printf("WARNING: couldn't open %s", bm->bm_path); 656 if (strcmp(bm->bm_path, path) != 0) 657 printf(" (%s)", path); 658 printf("\n"); 659 } 660 return fd; 661 } 662 663 static void 664 module_base_path(char *buf, size_t bufsize, const char *kernel_path) 665 { 666 #ifdef KERNEL_DIR 667 /* we cheat here, because %.* does not work with the mini printf */ 668 char *ptr = strrchr(kernel_path, '/'); 669 if (ptr) *ptr = '\0'; 670 snprintf(buf, bufsize, "%s/modules", kernel_path); 671 if (ptr) *ptr = '/'; 672 #else 673 const char *machine; 674 675 switch (netbsd_elf_class) { 676 case ELFCLASS32: 677 machine = "i386"; 678 break; 679 case ELFCLASS64: 680 machine = "amd64"; 681 break; 682 default: 683 machine = "generic"; 684 break; 685 } 686 if (netbsd_version / 1000000 % 100 == 99) { 687 /* -current */ 688 snprintf(buf, bufsize, 689 "/stand/%s/%d.%d.%d/modules", machine, 690 netbsd_version / 100000000, 691 netbsd_version / 1000000 % 100, 692 netbsd_version / 100 % 100); 693 } else if (netbsd_version != 0) { 694 /* release */ 695 snprintf(buf, bufsize, 696 "/stand/%s/%d.%d/modules", machine, 697 netbsd_version / 100000000, 698 netbsd_version / 1000000 % 100); 699 } 700 #endif 701 } 702 703 static void 704 module_init(const char *kernel_path) 705 { 706 struct bi_modulelist_entry *bi; 707 struct stat st; 708 char kdev[64]; 709 char *buf; 710 boot_module_t *bm; 711 ssize_t len; 712 off_t off; 713 int err, fd, nfail = 0; 714 715 extract_device(kernel_path, kdev, sizeof(kdev)); 716 module_base_path(module_base, sizeof(module_base), kernel_path); 717 718 /* First, see which modules are valid and calculate btinfo size */ 719 len = sizeof(struct btinfo_modulelist); 720 for (bm = boot_modules; bm; bm = bm->bm_next) { 721 fd = module_open(bm, 0, kdev, module_base, false); 722 if (fd == -1) { 723 bm->bm_len = -1; 724 ++nfail; 725 continue; 726 } 727 err = fstat(fd, &st); 728 if (err == -1 || st.st_size == -1) { 729 printf("WARNING: couldn't stat %s\n", bm->bm_path); 730 close(fd); 731 bm->bm_len = -1; 732 ++nfail; 733 continue; 734 } 735 bm->bm_len = st.st_size; 736 close(fd); 737 len += sizeof(struct bi_modulelist_entry); 738 } 739 740 /* Allocate the module list */ 741 btinfo_modulelist = alloc(len); 742 if (btinfo_modulelist == NULL) { 743 printf("WARNING: couldn't allocate module list\n"); 744 wait_sec(MODULE_WARNING_SEC); 745 return; 746 } 747 memset(btinfo_modulelist, 0, len); 748 btinfo_modulelist_size = len; 749 750 /* Fill in btinfo structure */ 751 buf = (char *)btinfo_modulelist; 752 btinfo_modulelist->num = 0; 753 off = sizeof(struct btinfo_modulelist); 754 755 for (bm = boot_modules; bm; bm = bm->bm_next) { 756 if (bm->bm_len == -1) 757 continue; 758 fd = module_open(bm, 0, kdev, module_base, true); 759 if (fd == -1) 760 continue; 761 image_end = (image_end + PAGE_SIZE - 1) & ~(PAGE_SIZE - 1); 762 len = pread(fd, (void *)(uintptr_t)image_end, SSIZE_MAX); 763 if (len < bm->bm_len) { 764 if ((howto & AB_SILENT) != 0) 765 printf("Loading %s ", bm->bm_path); 766 printf(" FAILED\n"); 767 } else { 768 btinfo_modulelist->num++; 769 bi = (struct bi_modulelist_entry *)(buf + off); 770 off += sizeof(struct bi_modulelist_entry); 771 strncpy(bi->path, bm->bm_path, sizeof(bi->path) - 1); 772 bi->base = image_end; 773 bi->len = len; 774 switch (bm->bm_type) { 775 case BM_TYPE_KMOD: 776 bi->type = BI_MODULE_ELF; 777 break; 778 case BM_TYPE_IMAGE: 779 bi->type = BI_MODULE_IMAGE; 780 break; 781 case BM_TYPE_FS: 782 bi->type = BI_MODULE_FS; 783 break; 784 case BM_TYPE_RND: 785 default: 786 /* safest -- rnd checks the sha1 */ 787 bi->type = BI_MODULE_RND; 788 break; 789 } 790 if ((howto & AB_SILENT) == 0) 791 printf(" \n"); 792 } 793 if (len > 0) 794 image_end += len; 795 close(fd); 796 } 797 btinfo_modulelist->endpa = image_end; 798 799 if (nfail > 0) { 800 printf("WARNING: %d module%s failed to load\n", 801 nfail, nfail == 1 ? "" : "s"); 802 #if notyet 803 wait_sec(MODULE_WARNING_SEC); 804 #endif 805 } 806 } 807 808 static void 809 userconf_init(void) 810 { 811 size_t count, len; 812 userconf_command_t *uc; 813 char *buf; 814 off_t off; 815 816 /* Calculate the userconf commands list size */ 817 count = 0; 818 for (uc = userconf_commands; uc != NULL; uc = uc->uc_next) 819 count++; 820 len = sizeof(*btinfo_userconfcommands) + 821 count * sizeof(struct bi_userconfcommand); 822 823 /* Allocate the userconf commands list */ 824 btinfo_userconfcommands = alloc(len); 825 if (btinfo_userconfcommands == NULL) { 826 printf("WARNING: couldn't allocate userconf commands list\n"); 827 return; 828 } 829 memset(btinfo_userconfcommands, 0, len); 830 btinfo_userconfcommands_size = len; 831 832 /* Fill in btinfo structure */ 833 buf = (char *)btinfo_userconfcommands; 834 off = sizeof(*btinfo_userconfcommands); 835 btinfo_userconfcommands->num = 0; 836 for (uc = userconf_commands; uc != NULL; uc = uc->uc_next) { 837 struct bi_userconfcommand *bi; 838 bi = (struct bi_userconfcommand *)(buf + off); 839 strncpy(bi->text, uc->uc_text, sizeof(bi->text) - 1); 840 841 off += sizeof(*bi); 842 btinfo_userconfcommands->num++; 843 } 844 } 845 846 int 847 exec_multiboot(const char *file, char *args) 848 { 849 struct multiboot_info *mbi; 850 struct multiboot_module *mbm; 851 struct bi_modulelist_entry *bim; 852 int i, len; 853 u_long marks[MARK_MAX]; 854 u_long extmem; 855 u_long basemem; 856 char *cmdline; 857 858 mbi = alloc(sizeof(struct multiboot_info)); 859 mbi->mi_flags = MULTIBOOT_INFO_HAS_MEMORY; 860 861 if (common_load_kernel(file, &basemem, &extmem, 0, 0, marks)) 862 goto out; 863 864 mbi->mi_mem_upper = extmem; 865 mbi->mi_mem_lower = basemem; 866 867 if (args) { 868 mbi->mi_flags |= MULTIBOOT_INFO_HAS_CMDLINE; 869 len = strlen(file) + 1 + strlen(args) + 1; 870 cmdline = alloc(len); 871 snprintf(cmdline, len, "%s %s", file, args); 872 mbi->mi_cmdline = (char *) vtophys(cmdline); 873 } 874 875 /* pull in any modules if necessary */ 876 if (boot_modules_enabled) { 877 module_init(file); 878 if (btinfo_modulelist) { 879 mbm = alloc(sizeof(struct multiboot_module) * 880 btinfo_modulelist->num); 881 882 bim = (struct bi_modulelist_entry *) 883 (((char *) btinfo_modulelist) + 884 sizeof(struct btinfo_modulelist)); 885 for (i = 0; i < btinfo_modulelist->num; i++) { 886 mbm[i].mmo_start = bim->base; 887 mbm[i].mmo_end = bim->base + bim->len; 888 mbm[i].mmo_string = (char *)vtophys(bim->path); 889 mbm[i].mmo_reserved = 0; 890 bim++; 891 } 892 mbi->mi_flags |= MULTIBOOT_INFO_HAS_MODS; 893 mbi->mi_mods_count = btinfo_modulelist->num; 894 mbi->mi_mods_addr = vtophys(mbm); 895 } 896 } 897 898 #ifdef DEBUG 899 printf("Start @ 0x%lx [%ld=0x%lx-0x%lx]...\n", marks[MARK_ENTRY], 900 marks[MARK_NSYM], marks[MARK_SYM], marks[MARK_END]); 901 #endif 902 903 #if 0 904 if (btinfo_symtab.nsym) { 905 mbi->mi_flags |= MULTIBOOT_INFO_HAS_ELF_SYMS; 906 mbi->mi_elfshdr_addr = marks[MARK_SYM]; 907 btinfo_symtab.nsym = marks[MARK_NSYM]; 908 btinfo_symtab.ssym = marks[MARK_SYM]; 909 btinfo_symtab.esym = marks[MARK_END]; 910 #endif 911 912 multiboot(marks[MARK_ENTRY], vtophys(mbi), 913 x86_trunc_page(mbi->mi_mem_lower * 1024)); 914 panic("exec returned"); 915 916 out: 917 dealloc(mbi, 0); 918 return -1; 919 } 920 921 void 922 x86_progress(const char *fmt, ...) 923 { 924 va_list ap; 925 926 if ((howto & AB_SILENT) != 0) 927 return; 928 va_start(ap, fmt); 929 vprintf(fmt, ap); 930 va_end(ap); 931 } 932
Indexes created Thu Oct 02 14:10:14 GMT 2025