exec.c revision 1.68
1 /* $NetBSD: exec.c,v 1.68 2017/03/24 08:50:17 nonaka 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); 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 static int 270 common_load_kernel(const char *file, u_long *basemem, u_long *extmem, 271 physaddr_t loadaddr, int floppy, u_long marks[MARK_MAX]) 272 { 273 int fd; 274 #ifdef XMS 275 u_long xmsmem; 276 physaddr_t origaddr = loadaddr; 277 #endif 278 279 *extmem = getextmem(); 280 *basemem = getbasemem(); 281 282 #ifdef XMS 283 if ((getextmem1() == 0) && (xmsmem = checkxms())) { 284 u_long kernsize; 285 286 /* 287 * With "CONSERVATIVE_MEMDETECT", extmem is 0 because 288 * getextmem() is getextmem1(). Without, the "smart" 289 * methods could fail to report all memory as well. 290 * xmsmem is a few kB less than the actual size, but 291 * better than nothing. 292 */ 293 if (xmsmem > *extmem) 294 *extmem = xmsmem; 295 /* 296 * Get the size of the kernel 297 */ 298 marks[MARK_START] = loadaddr; 299 if ((fd = loadfile(file, marks, COUNT_KERNEL)) == -1) 300 return EIO; 301 close(fd); 302 303 kernsize = marks[MARK_END]; 304 kernsize = (kernsize + 1023) / 1024; 305 306 loadaddr = xmsalloc(kernsize); 307 if (!loadaddr) 308 return ENOMEM; 309 } 310 #endif 311 marks[MARK_START] = loadaddr; 312 if ((fd = loadfile(file, marks, 313 LOAD_KERNEL & ~(floppy ? LOAD_BACKWARDS : 0))) == -1) 314 return EIO; 315 316 close(fd); 317 318 /* If the root fs type is unusual, load its module. */ 319 if (fsmod != NULL) 320 module_add_common(fsmod, BM_TYPE_KMOD); 321 322 /* 323 * Gather some information for the kernel. Do this after the 324 * "point of no return" to avoid memory leaks. 325 * (but before DOS might be trashed in the XMS case) 326 */ 327 #ifdef PASS_BIOSGEOM 328 bi_getbiosgeom(); 329 #endif 330 #ifdef PASS_MEMMAP 331 bi_getmemmap(); 332 #endif 333 334 #ifdef XMS 335 if (loadaddr != origaddr) { 336 /* 337 * We now have done our last DOS IO, so we may 338 * trash the OS. Copy the data from the temporary 339 * buffer to its real address. 340 */ 341 marks[MARK_START] -= loadaddr; 342 marks[MARK_END] -= loadaddr; 343 marks[MARK_SYM] -= loadaddr; 344 marks[MARK_END] -= loadaddr; 345 ppbcopy(loadaddr, origaddr, marks[MARK_END]); 346 } 347 #endif 348 marks[MARK_END] = (((u_long) marks[MARK_END] + sizeof(int) - 1)) & 349 (-sizeof(int)); 350 image_end = marks[MARK_END]; 351 kernel_loaded = true; 352 353 return 0; 354 } 355 356 int 357 exec_netbsd(const char *file, physaddr_t loadaddr, int boothowto, int floppy, 358 void (*callback)(void)) 359 { 360 uint32_t boot_argv[BOOT_NARGS]; 361 u_long marks[MARK_MAX]; 362 struct btinfo_symtab btinfo_symtab; 363 u_long extmem; 364 u_long basemem; 365 int error; 366 #ifdef EFIBOOT 367 int i; 368 #endif 369 370 #ifdef DEBUG 371 printf("exec: file=%s loadaddr=0x%lx\n", file ? file : "NULL", 372 loadaddr); 373 #endif 374 375 BI_ALLOC(BTINFO_MAX); 376 377 BI_ADD(&btinfo_console, BTINFO_CONSOLE, sizeof(struct btinfo_console)); 378 379 howto = boothowto; 380 381 memset(marks, 0, sizeof(marks)); 382 383 error = common_load_kernel(file, &basemem, &extmem, loadaddr, floppy, 384 marks); 385 if (error) { 386 errno = error; 387 goto out; 388 } 389 #ifdef EFIBOOT 390 /* adjust to the real load address */ 391 marks[MARK_START] -= efi_loadaddr; 392 marks[MARK_ENTRY] -= efi_loadaddr; 393 marks[MARK_DATA] -= efi_loadaddr; 394 /* MARK_NSYM */ 395 marks[MARK_SYM] -= efi_loadaddr; 396 marks[MARK_END] -= efi_loadaddr; 397 #endif 398 399 boot_argv[0] = boothowto; 400 boot_argv[1] = 0; 401 boot_argv[2] = vtophys(bootinfo); /* old cyl offset */ 402 boot_argv[3] = marks[MARK_END]; 403 boot_argv[4] = extmem; 404 boot_argv[5] = basemem; 405 406 /* pull in any modules if necessary */ 407 if (boot_modules_enabled) { 408 module_init(file); 409 if (btinfo_modulelist) { 410 #ifdef EFIBOOT 411 /* convert module loaded address to paddr */ 412 struct bi_modulelist_entry *bim; 413 bim = (void *)(btinfo_modulelist + 1); 414 for (i = 0; i < btinfo_modulelist->num; i++, bim++) 415 bim->base -= efi_loadaddr; 416 btinfo_modulelist->endpa -= efi_loadaddr; 417 #endif 418 BI_ADD(btinfo_modulelist, BTINFO_MODULELIST, 419 btinfo_modulelist_size); 420 } 421 } 422 423 userconf_init(); 424 if (btinfo_userconfcommands != NULL) 425 BI_ADD(btinfo_userconfcommands, BTINFO_USERCONFCOMMANDS, 426 btinfo_userconfcommands_size); 427 428 #ifdef DEBUG 429 printf("Start @ 0x%lx [%ld=0x%lx-0x%lx]...\n", marks[MARK_ENTRY], 430 marks[MARK_NSYM], marks[MARK_SYM], marks[MARK_END]); 431 #endif 432 433 btinfo_symtab.nsym = marks[MARK_NSYM]; 434 btinfo_symtab.ssym = marks[MARK_SYM]; 435 btinfo_symtab.esym = marks[MARK_END]; 436 BI_ADD(&btinfo_symtab, BTINFO_SYMTAB, sizeof(struct btinfo_symtab)); 437 438 /* set new video mode if necessary */ 439 vbe_commit(); 440 BI_ADD(&btinfo_framebuffer, BTINFO_FRAMEBUFFER, 441 sizeof(struct btinfo_framebuffer)); 442 443 if (callback != NULL) 444 (*callback)(); 445 #ifdef EFIBOOT 446 /* Copy bootinfo to safe arena. */ 447 for (i = 0; i < bootinfo->nentries; i++) { 448 struct btinfo_common *bi = (void *)(u_long)bootinfo->entry[i]; 449 char *p = alloc(bi->len); 450 memcpy(p, bi, bi->len); 451 bootinfo->entry[i] = vtophys(p); 452 } 453 454 efi_kernel_start = marks[MARK_START]; 455 efi_kernel_size = image_end - efi_loadaddr - efi_kernel_start; 456 #endif 457 startprog(marks[MARK_ENTRY], BOOT_NARGS, boot_argv, 458 x86_trunc_page(basemem * 1024)); 459 panic("exec returned"); 460 461 out: 462 BI_FREE(); 463 bootinfo = NULL; 464 return -1; 465 } 466 467 int 468 count_netbsd(const char *file, u_long *rsz) 469 { 470 u_long marks[MARK_MAX]; 471 char kdev[64]; 472 char base_path[64] = "/"; 473 struct stat st; 474 boot_module_t *bm; 475 u_long sz; 476 int err, fd; 477 478 howto = AB_SILENT; 479 480 memset(marks, 0, sizeof(marks)); 481 if ((fd = loadfile(file, marks, COUNT_KERNEL | LOAD_NOTE)) == -1) 482 return -1; 483 close(fd); 484 marks[MARK_END] = (((u_long) marks[MARK_END] + sizeof(int) - 1)) & 485 (-sizeof(int)); 486 sz = marks[MARK_END]; 487 488 /* The modules must be allocated after the kernel */ 489 if (boot_modules_enabled) { 490 extract_device(file, kdev, sizeof(kdev)); 491 module_base_path(base_path, sizeof(base_path)); 492 493 /* If the root fs type is unusual, load its module. */ 494 if (fsmod != NULL) 495 module_add_common(fsmod, BM_TYPE_KMOD); 496 497 for (bm = boot_modules; bm; bm = bm->bm_next) { 498 fd = module_open(bm, 0, kdev, base_path, false); 499 if (fd == -1) 500 continue; 501 sz = (sz + PAGE_SIZE - 1) & ~(PAGE_SIZE - 1); 502 err = fstat(fd, &st); 503 if (err == -1 || st.st_size == -1) { 504 close(fd); 505 continue; 506 } 507 sz += st.st_size; 508 close(fd); 509 } 510 } 511 512 *rsz = sz; 513 return 0; 514 } 515 516 static void 517 extract_device(const char *path, char *buf, size_t buflen) 518 { 519 size_t i; 520 521 if (strchr(path, ':') != NULL) { 522 for (i = 0; i < buflen - 2 && path[i] != ':'; i++) 523 buf[i] = path[i]; 524 buf[i++] = ':'; 525 buf[i] = '\0'; 526 } else 527 buf[0] = '\0'; 528 } 529 530 static const char * 531 module_path(boot_module_t *bm, const char *kdev, const char *base_path) 532 { 533 static char buf[256]; 534 char name_buf[256], dev_buf[64]; 535 const char *name, *name2, *p; 536 537 name = bm->bm_path; 538 for (name2 = name; *name2; ++name2) { 539 if (*name2 == ' ' || *name2 == '\t') { 540 strlcpy(name_buf, name, sizeof(name_buf)); 541 if ((uintptr_t)name2 - (uintptr_t)name < sizeof(name_buf)) 542 name_buf[name2 - name] = '\0'; 543 name = name_buf; 544 break; 545 } 546 } 547 if ((p = strchr(name, ':')) != NULL) { 548 /* device specified, use it */ 549 if (p[1] == '/') 550 snprintf(buf, sizeof(buf), "%s", name); 551 else { 552 p++; 553 extract_device(name, dev_buf, sizeof(dev_buf)); 554 snprintf(buf, sizeof(buf), "%s%s/%s/%s.kmod", 555 dev_buf, base_path, p, p); 556 } 557 } else { 558 /* device not specified; load from kernel device if known */ 559 if (name[0] == '/') 560 snprintf(buf, sizeof(buf), "%s%s", kdev, name); 561 else 562 snprintf(buf, sizeof(buf), "%s%s/%s/%s.kmod", 563 kdev, base_path, name, name); 564 } 565 566 return buf; 567 } 568 569 static int 570 module_open(boot_module_t *bm, int mode, const char *kdev, 571 const char *base_path, bool doload) 572 { 573 int fd; 574 const char *path; 575 576 /* check the expanded path first */ 577 path = module_path(bm, kdev, base_path); 578 fd = open(path, mode); 579 if (fd != -1) { 580 if ((howto & AB_SILENT) == 0 && doload) 581 printf("Loading %s ", path); 582 } else { 583 /* now attempt the raw path provided */ 584 fd = open(bm->bm_path, mode); 585 if (fd != -1 && (howto & AB_SILENT) == 0 && doload) 586 printf("Loading %s ", bm->bm_path); 587 } 588 if (!doload && fd == -1) { 589 printf("WARNING: couldn't open %s", bm->bm_path); 590 if (strcmp(bm->bm_path, path) != 0) 591 printf(" (%s)", path); 592 printf("\n"); 593 } 594 return fd; 595 } 596 597 static void 598 module_base_path(char *buf, size_t bufsize) 599 { 600 const char *machine; 601 602 switch (netbsd_elf_class) { 603 case ELFCLASS32: 604 machine = "i386"; 605 break; 606 case ELFCLASS64: 607 machine = "amd64"; 608 break; 609 default: 610 machine = "generic"; 611 break; 612 } 613 if (netbsd_version / 1000000 % 100 == 99) { 614 /* -current */ 615 snprintf(buf, bufsize, 616 "/stand/%s/%d.%d.%d/modules", machine, 617 netbsd_version / 100000000, 618 netbsd_version / 1000000 % 100, 619 netbsd_version / 100 % 100); 620 } else if (netbsd_version != 0) { 621 /* release */ 622 snprintf(buf, bufsize, 623 "/stand/%s/%d.%d/modules", machine, 624 netbsd_version / 100000000, 625 netbsd_version / 1000000 % 100); 626 } 627 } 628 629 static void 630 module_init(const char *kernel_path) 631 { 632 struct bi_modulelist_entry *bi; 633 struct stat st; 634 char kdev[64]; 635 char *buf; 636 boot_module_t *bm; 637 ssize_t len; 638 off_t off; 639 int err, fd, nfail = 0; 640 641 extract_device(kernel_path, kdev, sizeof(kdev)); 642 module_base_path(module_base, sizeof(module_base)); 643 644 /* First, see which modules are valid and calculate btinfo size */ 645 len = sizeof(struct btinfo_modulelist); 646 for (bm = boot_modules; bm; bm = bm->bm_next) { 647 fd = module_open(bm, 0, kdev, module_base, false); 648 if (fd == -1) { 649 bm->bm_len = -1; 650 ++nfail; 651 continue; 652 } 653 err = fstat(fd, &st); 654 if (err == -1 || st.st_size == -1) { 655 printf("WARNING: couldn't stat %s\n", bm->bm_path); 656 close(fd); 657 bm->bm_len = -1; 658 ++nfail; 659 continue; 660 } 661 bm->bm_len = st.st_size; 662 close(fd); 663 len += sizeof(struct bi_modulelist_entry); 664 } 665 666 /* Allocate the module list */ 667 btinfo_modulelist = alloc(len); 668 if (btinfo_modulelist == NULL) { 669 printf("WARNING: couldn't allocate module list\n"); 670 wait_sec(MODULE_WARNING_SEC); 671 return; 672 } 673 memset(btinfo_modulelist, 0, len); 674 btinfo_modulelist_size = len; 675 676 /* Fill in btinfo structure */ 677 buf = (char *)btinfo_modulelist; 678 btinfo_modulelist->num = 0; 679 off = sizeof(struct btinfo_modulelist); 680 681 for (bm = boot_modules; bm; bm = bm->bm_next) { 682 if (bm->bm_len == -1) 683 continue; 684 fd = module_open(bm, 0, kdev, module_base, true); 685 if (fd == -1) 686 continue; 687 image_end = (image_end + PAGE_SIZE - 1) & ~(PAGE_SIZE - 1); 688 len = pread(fd, (void *)(uintptr_t)image_end, SSIZE_MAX); 689 if (len < bm->bm_len) { 690 if ((howto & AB_SILENT) != 0) 691 printf("Loading %s ", bm->bm_path); 692 printf(" FAILED\n"); 693 } else { 694 btinfo_modulelist->num++; 695 bi = (struct bi_modulelist_entry *)(buf + off); 696 off += sizeof(struct bi_modulelist_entry); 697 strncpy(bi->path, bm->bm_path, sizeof(bi->path) - 1); 698 bi->base = image_end; 699 bi->len = len; 700 switch (bm->bm_type) { 701 case BM_TYPE_KMOD: 702 bi->type = BI_MODULE_ELF; 703 break; 704 case BM_TYPE_IMAGE: 705 bi->type = BI_MODULE_IMAGE; 706 break; 707 case BM_TYPE_FS: 708 bi->type = BI_MODULE_FS; 709 break; 710 case BM_TYPE_RND: 711 default: 712 /* safest -- rnd checks the sha1 */ 713 bi->type = BI_MODULE_RND; 714 break; 715 } 716 if ((howto & AB_SILENT) == 0) 717 printf(" \n"); 718 } 719 if (len > 0) 720 image_end += len; 721 close(fd); 722 } 723 btinfo_modulelist->endpa = image_end; 724 725 if (nfail > 0) { 726 printf("WARNING: %d module%s failed to load\n", 727 nfail, nfail == 1 ? "" : "s"); 728 #if notyet 729 wait_sec(MODULE_WARNING_SEC); 730 #endif 731 } 732 } 733 734 static void 735 userconf_init(void) 736 { 737 size_t count, len; 738 userconf_command_t *uc; 739 char *buf; 740 off_t off; 741 742 /* Calculate the userconf commands list size */ 743 count = 0; 744 for (uc = userconf_commands; uc != NULL; uc = uc->uc_next) 745 count++; 746 len = sizeof(*btinfo_userconfcommands) + 747 count * sizeof(struct bi_userconfcommand); 748 749 /* Allocate the userconf commands list */ 750 btinfo_userconfcommands = alloc(len); 751 if (btinfo_userconfcommands == NULL) { 752 printf("WARNING: couldn't allocate userconf commands list\n"); 753 return; 754 } 755 memset(btinfo_userconfcommands, 0, len); 756 btinfo_userconfcommands_size = len; 757 758 /* Fill in btinfo structure */ 759 buf = (char *)btinfo_userconfcommands; 760 off = sizeof(*btinfo_userconfcommands); 761 btinfo_userconfcommands->num = 0; 762 for (uc = userconf_commands; uc != NULL; uc = uc->uc_next) { 763 struct bi_userconfcommand *bi; 764 bi = (struct bi_userconfcommand *)(buf + off); 765 strncpy(bi->text, uc->uc_text, sizeof(bi->text) - 1); 766 767 off += sizeof(*bi); 768 btinfo_userconfcommands->num++; 769 } 770 } 771 772 int 773 exec_multiboot(const char *file, char *args) 774 { 775 struct multiboot_info *mbi; 776 struct multiboot_module *mbm; 777 struct bi_modulelist_entry *bim; 778 int i, len; 779 u_long marks[MARK_MAX]; 780 u_long extmem; 781 u_long basemem; 782 char *cmdline; 783 784 mbi = alloc(sizeof(struct multiboot_info)); 785 mbi->mi_flags = MULTIBOOT_INFO_HAS_MEMORY; 786 787 if (common_load_kernel(file, &basemem, &extmem, 0, 0, marks)) 788 goto out; 789 790 mbi->mi_mem_upper = extmem; 791 mbi->mi_mem_lower = basemem; 792 793 if (args) { 794 mbi->mi_flags |= MULTIBOOT_INFO_HAS_CMDLINE; 795 len = strlen(file) + 1 + strlen(args) + 1; 796 cmdline = alloc(len); 797 snprintf(cmdline, len, "%s %s", file, args); 798 mbi->mi_cmdline = (char *) vtophys(cmdline); 799 } 800 801 /* pull in any modules if necessary */ 802 if (boot_modules_enabled) { 803 module_init(file); 804 if (btinfo_modulelist) { 805 mbm = alloc(sizeof(struct multiboot_module) * 806 btinfo_modulelist->num); 807 808 bim = (struct bi_modulelist_entry *) 809 (((char *) btinfo_modulelist) + 810 sizeof(struct btinfo_modulelist)); 811 for (i = 0; i < btinfo_modulelist->num; i++) { 812 mbm[i].mmo_start = bim->base; 813 mbm[i].mmo_end = bim->base + bim->len; 814 mbm[i].mmo_string = (char *)vtophys(bim->path); 815 mbm[i].mmo_reserved = 0; 816 bim++; 817 } 818 mbi->mi_flags |= MULTIBOOT_INFO_HAS_MODS; 819 mbi->mi_mods_count = btinfo_modulelist->num; 820 mbi->mi_mods_addr = vtophys(mbm); 821 } 822 } 823 824 #ifdef DEBUG 825 printf("Start @ 0x%lx [%ld=0x%lx-0x%lx]...\n", marks[MARK_ENTRY], 826 marks[MARK_NSYM], marks[MARK_SYM], marks[MARK_END]); 827 #endif 828 829 #if 0 830 if (btinfo_symtab.nsym) { 831 mbi->mi_flags |= MULTIBOOT_INFO_HAS_ELF_SYMS; 832 mbi->mi_elfshdr_addr = marks[MARK_SYM]; 833 btinfo_symtab.nsym = marks[MARK_NSYM]; 834 btinfo_symtab.ssym = marks[MARK_SYM]; 835 btinfo_symtab.esym = marks[MARK_END]; 836 #endif 837 838 multiboot(marks[MARK_ENTRY], vtophys(mbi), 839 x86_trunc_page(mbi->mi_mem_lower * 1024)); 840 panic("exec returned"); 841 842 out: 843 dealloc(mbi, 0); 844 return -1; 845 } 846 847 void 848 x86_progress(const char *fmt, ...) 849 { 850 va_list ap; 851 852 if ((howto & AB_SILENT) != 0) 853 return; 854 va_start(ap, fmt); 855 vprintf(fmt, ap); 856 va_end(ap); 857 } 858
Indexes created Tue Sep 23 07:09:52 GMT 2025