exec.c revision 1.62
1 /* $NetBSD: exec.c,v 1.62 2016/12/04 08:21:08 maxv 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 112 113 #define BOOT_NARGS 6 114 115 #ifndef PAGE_SIZE 116 #define PAGE_SIZE 4096 117 #endif 118 119 #define MODULE_WARNING_SEC 5 120 121 extern struct btinfo_console btinfo_console; 122 123 boot_module_t *boot_modules; 124 bool boot_modules_enabled = true; 125 bool kernel_loaded; 126 127 typedef struct userconf_command { 128 char *uc_text; 129 size_t uc_len; 130 struct userconf_command *uc_next; 131 } userconf_command_t; 132 userconf_command_t *userconf_commands = NULL; 133 134 static struct btinfo_framebuffer btinfo_framebuffer; 135 136 static struct btinfo_modulelist *btinfo_modulelist; 137 static size_t btinfo_modulelist_size; 138 static uint32_t image_end; 139 static char module_base[64] = "/"; 140 static int howto; 141 142 static struct btinfo_userconfcommands *btinfo_userconfcommands = NULL; 143 static size_t btinfo_userconfcommands_size = 0; 144 145 static void module_init(const char *); 146 static void module_add_common(const char *, uint8_t); 147 148 static void userconf_init(void); 149 150 void 151 framebuffer_configure(struct btinfo_framebuffer *fb) 152 { 153 if (fb) 154 btinfo_framebuffer = *fb; 155 else { 156 btinfo_framebuffer.physaddr = 0; 157 btinfo_framebuffer.flags = 0; 158 } 159 } 160 161 void 162 module_add(char *name) 163 { 164 return module_add_common(name, BM_TYPE_KMOD); 165 } 166 167 void 168 splash_add(char *name) 169 { 170 return module_add_common(name, BM_TYPE_IMAGE); 171 } 172 173 void 174 rnd_add(char *name) 175 { 176 return module_add_common(name, BM_TYPE_RND); 177 } 178 179 void 180 fs_add(char *name) 181 { 182 return module_add_common(name, BM_TYPE_FS); 183 } 184 185 static void 186 module_add_common(const char *name, uint8_t type) 187 { 188 boot_module_t *bm, *bmp; 189 size_t len; 190 char *str; 191 192 while (*name == ' ' || *name == '\t') 193 ++name; 194 195 bm = alloc(sizeof(boot_module_t)); 196 len = strlen(name) + 1; 197 str = alloc(len); 198 if (bm == NULL || str == NULL) { 199 printf("couldn't allocate module\n"); 200 return; 201 } 202 memcpy(str, name, len); 203 bm->bm_path = str; 204 bm->bm_next = NULL; 205 bm->bm_type = type; 206 if (boot_modules == NULL) 207 boot_modules = bm; 208 else { 209 for (bmp = boot_modules; bmp->bm_next; 210 bmp = bmp->bm_next) 211 ; 212 bmp->bm_next = bm; 213 } 214 } 215 216 void 217 userconf_add(char *cmd) 218 { 219 userconf_command_t *uc; 220 size_t len; 221 char *text; 222 223 while (*cmd == ' ' || *cmd == '\t') 224 ++cmd; 225 226 uc = alloc(sizeof(*uc)); 227 if (uc == NULL) { 228 printf("couldn't allocate command\n"); 229 return; 230 } 231 232 len = strlen(cmd) + 1; 233 text = alloc(len); 234 if (text == NULL) { 235 dealloc(uc, sizeof(*uc)); 236 printf("couldn't allocate command\n"); 237 return; 238 } 239 memcpy(text, cmd, len); 240 241 uc->uc_text = text; 242 uc->uc_len = len; 243 uc->uc_next = NULL; 244 245 if (userconf_commands == NULL) 246 userconf_commands = uc; 247 else { 248 userconf_command_t *ucp; 249 for (ucp = userconf_commands; ucp->uc_next != NULL; 250 ucp = ucp->uc_next) 251 ; 252 ucp->uc_next = uc; 253 } 254 } 255 256 static int 257 common_load_kernel(const char *file, u_long *basemem, u_long *extmem, 258 physaddr_t loadaddr, int floppy, u_long marks[MARK_MAX]) 259 { 260 int fd; 261 #ifdef XMS 262 u_long xmsmem; 263 physaddr_t origaddr = loadaddr; 264 #endif 265 266 *extmem = getextmem(); 267 *basemem = getbasemem(); 268 269 #ifdef XMS 270 if ((getextmem1() == 0) && (xmsmem = checkxms())) { 271 u_long kernsize; 272 273 /* 274 * With "CONSERVATIVE_MEMDETECT", extmem is 0 because 275 * getextmem() is getextmem1(). Without, the "smart" 276 * methods could fail to report all memory as well. 277 * xmsmem is a few kB less than the actual size, but 278 * better than nothing. 279 */ 280 if (xmsmem > *extmem) 281 *extmem = xmsmem; 282 /* 283 * Get the size of the kernel 284 */ 285 marks[MARK_START] = loadaddr; 286 if ((fd = loadfile(file, marks, COUNT_KERNEL)) == -1) 287 return EIO; 288 close(fd); 289 290 kernsize = marks[MARK_END]; 291 kernsize = (kernsize + 1023) / 1024; 292 293 loadaddr = xmsalloc(kernsize); 294 if (!loadaddr) 295 return ENOMEM; 296 } 297 #endif 298 marks[MARK_START] = loadaddr; 299 if ((fd = loadfile(file, marks, 300 LOAD_KERNEL & ~(floppy ? LOAD_BACKWARDS : 0))) == -1) 301 return EIO; 302 303 close(fd); 304 305 /* If the root fs type is unusual, load its module. */ 306 if (fsmod != NULL) 307 module_add_common(fsmod, BM_TYPE_KMOD); 308 309 /* 310 * Gather some information for the kernel. Do this after the 311 * "point of no return" to avoid memory leaks. 312 * (but before DOS might be trashed in the XMS case) 313 */ 314 #ifdef PASS_BIOSGEOM 315 bi_getbiosgeom(); 316 #endif 317 #ifdef PASS_MEMMAP 318 bi_getmemmap(); 319 #endif 320 321 #ifdef XMS 322 if (loadaddr != origaddr) { 323 /* 324 * We now have done our last DOS IO, so we may 325 * trash the OS. Copy the data from the temporary 326 * buffer to its real address. 327 */ 328 marks[MARK_START] -= loadaddr; 329 marks[MARK_END] -= loadaddr; 330 marks[MARK_SYM] -= loadaddr; 331 marks[MARK_END] -= loadaddr; 332 ppbcopy(loadaddr, origaddr, marks[MARK_END]); 333 } 334 #endif 335 marks[MARK_END] = (((u_long) marks[MARK_END] + sizeof(int) - 1)) & 336 (-sizeof(int)); 337 image_end = marks[MARK_END]; 338 kernel_loaded = true; 339 340 return 0; 341 } 342 343 int 344 exec_netbsd(const char *file, physaddr_t loadaddr, int boothowto, int floppy, 345 void (*callback)(void)) 346 { 347 uint32_t boot_argv[BOOT_NARGS]; 348 u_long marks[MARK_MAX]; 349 struct btinfo_symtab btinfo_symtab; 350 u_long extmem; 351 u_long basemem; 352 353 #ifdef DEBUG 354 printf("exec: file=%s loadaddr=0x%lx\n", file ? file : "NULL", 355 loadaddr); 356 #endif 357 358 BI_ALLOC(BTINFO_MAX); 359 360 BI_ADD(&btinfo_console, BTINFO_CONSOLE, sizeof(struct btinfo_console)); 361 362 howto = boothowto; 363 364 memset(marks, 0, sizeof(marks)); 365 366 if (common_load_kernel(file, &basemem, &extmem, loadaddr, floppy, marks)) 367 goto out; 368 369 boot_argv[0] = boothowto; 370 boot_argv[1] = 0; 371 boot_argv[2] = vtophys(bootinfo); /* old cyl offset */ 372 boot_argv[3] = marks[MARK_END]; 373 boot_argv[4] = extmem; 374 boot_argv[5] = basemem; 375 376 /* pull in any modules if necessary */ 377 if (boot_modules_enabled) { 378 module_init(file); 379 if (btinfo_modulelist) { 380 BI_ADD(btinfo_modulelist, BTINFO_MODULELIST, 381 btinfo_modulelist_size); 382 } 383 } 384 385 userconf_init(); 386 if (btinfo_userconfcommands != NULL) 387 BI_ADD(btinfo_userconfcommands, BTINFO_USERCONFCOMMANDS, 388 btinfo_userconfcommands_size); 389 390 #ifdef DEBUG 391 printf("Start @ 0x%lx [%ld=0x%lx-0x%lx]...\n", marks[MARK_ENTRY], 392 marks[MARK_NSYM], marks[MARK_SYM], marks[MARK_END]); 393 #endif 394 395 btinfo_symtab.nsym = marks[MARK_NSYM]; 396 btinfo_symtab.ssym = marks[MARK_SYM]; 397 btinfo_symtab.esym = marks[MARK_END]; 398 BI_ADD(&btinfo_symtab, BTINFO_SYMTAB, sizeof(struct btinfo_symtab)); 399 400 /* set new video mode if necessary */ 401 vbe_commit(); 402 BI_ADD(&btinfo_framebuffer, BTINFO_FRAMEBUFFER, 403 sizeof(struct btinfo_framebuffer)); 404 405 if (callback != NULL) 406 (*callback)(); 407 startprog(marks[MARK_ENTRY], BOOT_NARGS, boot_argv, 408 x86_trunc_page(basemem * 1024)); 409 panic("exec returned"); 410 411 out: 412 BI_FREE(); 413 bootinfo = NULL; 414 return -1; 415 } 416 417 static void 418 extract_device(const char *path, char *buf, size_t buflen) 419 { 420 size_t i; 421 422 if (strchr(path, ':') != NULL) { 423 for (i = 0; i < buflen - 2 && path[i] != ':'; i++) 424 buf[i] = path[i]; 425 buf[i++] = ':'; 426 buf[i] = '\0'; 427 } else 428 buf[0] = '\0'; 429 } 430 431 static const char * 432 module_path(boot_module_t *bm, const char *kdev) 433 { 434 static char buf[256]; 435 char name_buf[256], dev_buf[64]; 436 const char *name, *name2, *p; 437 438 name = bm->bm_path; 439 for (name2 = name; *name2; ++name2) { 440 if (*name2 == ' ' || *name2 == '\t') { 441 strlcpy(name_buf, name, sizeof(name_buf)); 442 if ((uintptr_t)name2 - (uintptr_t)name < sizeof(name_buf)) 443 name_buf[name2 - name] = '\0'; 444 name = name_buf; 445 break; 446 } 447 } 448 if ((p = strchr(name, ':')) != NULL) { 449 /* device specified, use it */ 450 if (p[1] == '/') 451 snprintf(buf, sizeof(buf), "%s", name); 452 else { 453 p++; 454 extract_device(name, dev_buf, sizeof(dev_buf)); 455 snprintf(buf, sizeof(buf), "%s%s/%s/%s.kmod", 456 dev_buf, module_base, p, p); 457 } 458 } else { 459 /* device not specified; load from kernel device if known */ 460 if (name[0] == '/') 461 snprintf(buf, sizeof(buf), "%s%s", kdev, name); 462 else 463 snprintf(buf, sizeof(buf), "%s%s/%s/%s.kmod", 464 kdev, module_base, name, name); 465 } 466 467 return buf; 468 } 469 470 static int 471 module_open(boot_module_t *bm, int mode, const char *kdev, bool doload) 472 { 473 int fd; 474 const char *path; 475 476 /* check the expanded path first */ 477 path = module_path(bm, kdev); 478 fd = open(path, mode); 479 if (fd != -1) { 480 if ((howto & AB_SILENT) == 0 && doload) 481 printf("Loading %s ", path); 482 } else { 483 /* now attempt the raw path provided */ 484 fd = open(bm->bm_path, mode); 485 if (fd != -1 && (howto & AB_SILENT) == 0 && doload) 486 printf("Loading %s ", bm->bm_path); 487 } 488 if (!doload && fd == -1) { 489 printf("WARNING: couldn't open %s", bm->bm_path); 490 if (strcmp(bm->bm_path, path) != 0) 491 printf(" (%s)", path); 492 printf("\n"); 493 } 494 return fd; 495 } 496 497 static void 498 module_init(const char *kernel_path) 499 { 500 struct bi_modulelist_entry *bi; 501 struct stat st; 502 const char *machine; 503 char kdev[64]; 504 char *buf; 505 boot_module_t *bm; 506 ssize_t len; 507 off_t off; 508 int err, fd, nfail = 0; 509 510 extract_device(kernel_path, kdev, sizeof(kdev)); 511 512 switch (netbsd_elf_class) { 513 case ELFCLASS32: 514 machine = "i386"; 515 break; 516 case ELFCLASS64: 517 machine = "amd64"; 518 break; 519 default: 520 machine = "generic"; 521 break; 522 } 523 if (netbsd_version / 1000000 % 100 == 99) { 524 /* -current */ 525 snprintf(module_base, sizeof(module_base), 526 "/stand/%s/%d.%d.%d/modules", machine, 527 netbsd_version / 100000000, 528 netbsd_version / 1000000 % 100, 529 netbsd_version / 100 % 100); 530 } else if (netbsd_version != 0) { 531 /* release */ 532 snprintf(module_base, sizeof(module_base), 533 "/stand/%s/%d.%d/modules", machine, 534 netbsd_version / 100000000, 535 netbsd_version / 1000000 % 100); 536 } 537 538 /* First, see which modules are valid and calculate btinfo size */ 539 len = sizeof(struct btinfo_modulelist); 540 for (bm = boot_modules; bm; bm = bm->bm_next) { 541 fd = module_open(bm, 0, kdev, false); 542 if (fd == -1) { 543 bm->bm_len = -1; 544 ++nfail; 545 continue; 546 } 547 err = fstat(fd, &st); 548 if (err == -1 || st.st_size == -1) { 549 printf("WARNING: couldn't stat %s\n", bm->bm_path); 550 close(fd); 551 bm->bm_len = -1; 552 ++nfail; 553 continue; 554 } 555 bm->bm_len = st.st_size; 556 close(fd); 557 len += sizeof(struct bi_modulelist_entry); 558 } 559 560 /* Allocate the module list */ 561 btinfo_modulelist = alloc(len); 562 if (btinfo_modulelist == NULL) { 563 printf("WARNING: couldn't allocate module list\n"); 564 wait_sec(MODULE_WARNING_SEC); 565 return; 566 } 567 memset(btinfo_modulelist, 0, len); 568 btinfo_modulelist_size = len; 569 570 /* Fill in btinfo structure */ 571 buf = (char *)btinfo_modulelist; 572 btinfo_modulelist->num = 0; 573 off = sizeof(struct btinfo_modulelist); 574 575 for (bm = boot_modules; bm; bm = bm->bm_next) { 576 if (bm->bm_len == -1) 577 continue; 578 fd = module_open(bm, 0, kdev, true); 579 if (fd == -1) 580 continue; 581 image_end = (image_end + PAGE_SIZE - 1) & ~(PAGE_SIZE - 1); 582 len = pread(fd, (void *)(uintptr_t)image_end, SSIZE_MAX); 583 if (len < bm->bm_len) { 584 if ((howto & AB_SILENT) != 0) 585 printf("Loading %s ", bm->bm_path); 586 printf(" FAILED\n"); 587 } else { 588 btinfo_modulelist->num++; 589 bi = (struct bi_modulelist_entry *)(buf + off); 590 off += sizeof(struct bi_modulelist_entry); 591 strncpy(bi->path, bm->bm_path, sizeof(bi->path) - 1); 592 bi->base = image_end; 593 bi->len = len; 594 switch (bm->bm_type) { 595 case BM_TYPE_KMOD: 596 bi->type = BI_MODULE_ELF; 597 break; 598 case BM_TYPE_IMAGE: 599 bi->type = BI_MODULE_IMAGE; 600 break; 601 case BM_TYPE_FS: 602 bi->type = BI_MODULE_FS; 603 break; 604 case BM_TYPE_RND: 605 default: 606 /* safest -- rnd checks the sha1 */ 607 bi->type = BI_MODULE_RND; 608 break; 609 } 610 if ((howto & AB_SILENT) == 0) 611 printf(" \n"); 612 } 613 if (len > 0) 614 image_end += len; 615 close(fd); 616 } 617 btinfo_modulelist->endpa = image_end; 618 619 if (nfail > 0) { 620 printf("WARNING: %d module%s failed to load\n", 621 nfail, nfail == 1 ? "" : "s"); 622 #if notyet 623 wait_sec(MODULE_WARNING_SEC); 624 #endif 625 } 626 } 627 628 static void 629 userconf_init(void) 630 { 631 size_t count, len; 632 userconf_command_t *uc; 633 char *buf; 634 off_t off; 635 636 /* Calculate the userconf commands list size */ 637 count = 0; 638 for (uc = userconf_commands; uc != NULL; uc = uc->uc_next) 639 count++; 640 len = sizeof(*btinfo_userconfcommands) + 641 count * sizeof(struct bi_userconfcommand); 642 643 /* Allocate the userconf commands list */ 644 btinfo_userconfcommands = alloc(len); 645 if (btinfo_userconfcommands == NULL) { 646 printf("WARNING: couldn't allocate userconf commands list\n"); 647 return; 648 } 649 memset(btinfo_userconfcommands, 0, len); 650 btinfo_userconfcommands_size = len; 651 652 /* Fill in btinfo structure */ 653 buf = (char *)btinfo_userconfcommands; 654 off = sizeof(*btinfo_userconfcommands); 655 btinfo_userconfcommands->num = 0; 656 for (uc = userconf_commands; uc != NULL; uc = uc->uc_next) { 657 struct bi_userconfcommand *bi; 658 bi = (struct bi_userconfcommand *)(buf + off); 659 strncpy(bi->text, uc->uc_text, sizeof(bi->text) - 1); 660 661 off += sizeof(*bi); 662 btinfo_userconfcommands->num++; 663 } 664 } 665 666 int 667 exec_multiboot(const char *file, char *args) 668 { 669 struct multiboot_info *mbi; 670 struct multiboot_module *mbm; 671 struct bi_modulelist_entry *bim; 672 int i, len; 673 u_long marks[MARK_MAX]; 674 u_long extmem; 675 u_long basemem; 676 char *cmdline; 677 678 mbi = alloc(sizeof(struct multiboot_info)); 679 mbi->mi_flags = MULTIBOOT_INFO_HAS_MEMORY; 680 681 if (common_load_kernel(file, &basemem, &extmem, 0, 0, marks)) 682 goto out; 683 684 mbi->mi_mem_upper = extmem; 685 mbi->mi_mem_lower = basemem; 686 687 if (args) { 688 mbi->mi_flags |= MULTIBOOT_INFO_HAS_CMDLINE; 689 len = strlen(file) + 1 + strlen(args) + 1; 690 cmdline = alloc(len); 691 snprintf(cmdline, len, "%s %s", file, args); 692 mbi->mi_cmdline = (char *) vtophys(cmdline); 693 } 694 695 /* pull in any modules if necessary */ 696 if (boot_modules_enabled) { 697 module_init(file); 698 if (btinfo_modulelist) { 699 mbm = alloc(sizeof(struct multiboot_module) * 700 btinfo_modulelist->num); 701 702 bim = (struct bi_modulelist_entry *) 703 (((char *) btinfo_modulelist) + 704 sizeof(struct btinfo_modulelist)); 705 for (i = 0; i < btinfo_modulelist->num; i++) { 706 mbm[i].mmo_start = bim->base; 707 mbm[i].mmo_end = bim->base + bim->len; 708 mbm[i].mmo_string = (char *)vtophys(bim->path); 709 mbm[i].mmo_reserved = 0; 710 bim++; 711 } 712 mbi->mi_flags |= MULTIBOOT_INFO_HAS_MODS; 713 mbi->mi_mods_count = btinfo_modulelist->num; 714 mbi->mi_mods_addr = vtophys(mbm); 715 } 716 } 717 718 #ifdef DEBUG 719 printf("Start @ 0x%lx [%ld=0x%lx-0x%lx]...\n", marks[MARK_ENTRY], 720 marks[MARK_NSYM], marks[MARK_SYM], marks[MARK_END]); 721 #endif 722 723 #if 0 724 if (btinfo_symtab.nsym) { 725 mbi->mi_flags |= MULTIBOOT_INFO_HAS_ELF_SYMS; 726 mbi->mi_elfshdr_addr = marks[MARK_SYM]; 727 btinfo_symtab.nsym = marks[MARK_NSYM]; 728 btinfo_symtab.ssym = marks[MARK_SYM]; 729 btinfo_symtab.esym = marks[MARK_END]; 730 #endif 731 732 multiboot(marks[MARK_ENTRY], vtophys(mbi), 733 x86_trunc_page(mbi->mi_mem_lower * 1024)); 734 panic("exec returned"); 735 736 out: 737 dealloc(mbi, 0); 738 return -1; 739 } 740 741 void 742 x86_progress(const char *fmt, ...) 743 { 744 va_list ap; 745 746 if ((howto & AB_SILENT) != 0) 747 return; 748 va_start(ap, fmt); 749 vprintf(fmt, ap); 750 va_end(ap); 751 } 752
Indexes created Thu Sep 25 16:09:42 GMT 2025