exec.c revision 1.60
1 /* $NetBSD: exec.c,v 1.60 2016/06/05 14:06:31 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 NetBSD a.out kernel 92 * needs lowlevel startup from startprog.S 93 * This is a special version of exec.c to support use of XMS. 94 */ 95 96 #include <sys/param.h> 97 #include <sys/reboot.h> 98 #include <sys/reboot.h> 99 100 #include <i386/multiboot.h> 101 102 #include <lib/libsa/stand.h> 103 #include <lib/libkern/libkern.h> 104 105 #include "loadfile.h" 106 #include "libi386.h" 107 #include "bootinfo.h" 108 #include "bootmod.h" 109 #include "vbe.h" 110 #ifdef SUPPORT_PS2 111 #include "biosmca.h" 112 #endif 113 114 #define BOOT_NARGS 6 115 116 #ifndef PAGE_SIZE 117 #define PAGE_SIZE 4096 118 #endif 119 120 #define MODULE_WARNING_SEC 5 121 122 extern struct btinfo_console btinfo_console; 123 124 boot_module_t *boot_modules; 125 bool boot_modules_enabled = true; 126 bool kernel_loaded; 127 128 typedef struct userconf_command { 129 char *uc_text; 130 size_t uc_len; 131 struct userconf_command *uc_next; 132 } userconf_command_t; 133 userconf_command_t *userconf_commands = NULL; 134 135 static struct btinfo_framebuffer btinfo_framebuffer; 136 137 static struct btinfo_modulelist *btinfo_modulelist; 138 static size_t btinfo_modulelist_size; 139 static uint32_t image_end; 140 static char module_base[64] = "/"; 141 static int howto; 142 143 static struct btinfo_userconfcommands *btinfo_userconfcommands = NULL; 144 static size_t btinfo_userconfcommands_size = 0; 145 146 static void module_init(const char *); 147 static void module_add_common(const char *, uint8_t); 148 149 static void userconf_init(void); 150 151 void 152 framebuffer_configure(struct btinfo_framebuffer *fb) 153 { 154 if (fb) 155 btinfo_framebuffer = *fb; 156 else { 157 btinfo_framebuffer.physaddr = 0; 158 btinfo_framebuffer.flags = 0; 159 } 160 } 161 162 void 163 module_add(char *name) 164 { 165 return module_add_common(name, BM_TYPE_KMOD); 166 } 167 168 void 169 splash_add(char *name) 170 { 171 return module_add_common(name, BM_TYPE_IMAGE); 172 } 173 174 void 175 rnd_add(char *name) 176 { 177 return module_add_common(name, BM_TYPE_RND); 178 } 179 180 void 181 fs_add(char *name) 182 { 183 return module_add_common(name, BM_TYPE_FS); 184 } 185 186 static void 187 module_add_common(const char *name, uint8_t type) 188 { 189 boot_module_t *bm, *bmp; 190 size_t len; 191 char *str; 192 193 while (*name == ' ' || *name == '\t') 194 ++name; 195 196 bm = alloc(sizeof(boot_module_t)); 197 len = strlen(name) + 1; 198 str = alloc(len); 199 if (bm == NULL || str == NULL) { 200 printf("couldn't allocate module\n"); 201 return; 202 } 203 memcpy(str, name, len); 204 bm->bm_path = str; 205 bm->bm_next = NULL; 206 bm->bm_type = type; 207 if (boot_modules == NULL) 208 boot_modules = bm; 209 else { 210 for (bmp = boot_modules; bmp->bm_next; 211 bmp = bmp->bm_next) 212 ; 213 bmp->bm_next = bm; 214 } 215 } 216 217 void 218 userconf_add(char *cmd) 219 { 220 userconf_command_t *uc; 221 size_t len; 222 char *text; 223 224 while (*cmd == ' ' || *cmd == '\t') 225 ++cmd; 226 227 uc = alloc(sizeof(*uc)); 228 if (uc == NULL) { 229 printf("couldn't allocate command\n"); 230 return; 231 } 232 233 len = strlen(cmd) + 1; 234 text = alloc(len); 235 if (text == NULL) { 236 dealloc(uc, sizeof(*uc)); 237 printf("couldn't allocate command\n"); 238 return; 239 } 240 memcpy(text, cmd, len); 241 242 uc->uc_text = text; 243 uc->uc_len = len; 244 uc->uc_next = NULL; 245 246 if (userconf_commands == NULL) 247 userconf_commands = uc; 248 else { 249 userconf_command_t *ucp; 250 for (ucp = userconf_commands; ucp->uc_next != NULL; 251 ucp = ucp->uc_next) 252 ; 253 ucp->uc_next = uc; 254 } 255 } 256 257 static int 258 common_load_kernel(const char *file, u_long *basemem, u_long *extmem, 259 physaddr_t loadaddr, int floppy, u_long marks[MARK_MAX]) 260 { 261 int fd; 262 #ifdef XMS 263 u_long xmsmem; 264 physaddr_t origaddr = loadaddr; 265 #endif 266 267 *extmem = getextmem(); 268 *basemem = getbasemem(); 269 270 #ifdef XMS 271 if ((getextmem1() == 0) && (xmsmem = checkxms())) { 272 u_long kernsize; 273 274 /* 275 * With "CONSERVATIVE_MEMDETECT", extmem is 0 because 276 * getextmem() is getextmem1(). Without, the "smart" 277 * methods could fail to report all memory as well. 278 * xmsmem is a few kB less than the actual size, but 279 * better than nothing. 280 */ 281 if (xmsmem > *extmem) 282 *extmem = xmsmem; 283 /* 284 * Get the size of the kernel 285 */ 286 marks[MARK_START] = loadaddr; 287 if ((fd = loadfile(file, marks, COUNT_KERNEL)) == -1) 288 return EIO; 289 close(fd); 290 291 kernsize = marks[MARK_END]; 292 kernsize = (kernsize + 1023) / 1024; 293 294 loadaddr = xmsalloc(kernsize); 295 if (!loadaddr) 296 return ENOMEM; 297 } 298 #endif 299 marks[MARK_START] = loadaddr; 300 if ((fd = loadfile(file, marks, 301 LOAD_KERNEL & ~(floppy ? LOAD_BACKWARDS : 0))) == -1) 302 return EIO; 303 304 close(fd); 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 /* 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 #ifdef XMS 323 if (loadaddr != origaddr) { 324 /* 325 * We now have done our last DOS IO, so we may 326 * trash the OS. Copy the data from the temporary 327 * buffer to its real address. 328 */ 329 marks[MARK_START] -= loadaddr; 330 marks[MARK_END] -= loadaddr; 331 marks[MARK_SYM] -= loadaddr; 332 marks[MARK_END] -= loadaddr; 333 ppbcopy(loadaddr, origaddr, marks[MARK_END]); 334 } 335 #endif 336 marks[MARK_END] = (((u_long) marks[MARK_END] + sizeof(int) - 1)) & 337 (-sizeof(int)); 338 image_end = marks[MARK_END]; 339 kernel_loaded = true; 340 341 return 0; 342 } 343 344 int 345 exec_netbsd(const char *file, physaddr_t loadaddr, int boothowto, int floppy, 346 void (*callback)(void)) 347 { 348 uint32_t boot_argv[BOOT_NARGS]; 349 u_long marks[MARK_MAX]; 350 struct btinfo_symtab btinfo_symtab; 351 u_long extmem; 352 u_long basemem; 353 354 #ifdef DEBUG 355 printf("exec: file=%s loadaddr=0x%lx\n", 356 file ? file : "NULL", loadaddr); 357 #endif 358 359 BI_ALLOC(32); /* ??? */ 360 361 BI_ADD(&btinfo_console, BTINFO_CONSOLE, sizeof(struct btinfo_console)); 362 363 howto = boothowto; 364 365 memset(marks, 0, sizeof(marks)); 366 367 if (common_load_kernel(file, &basemem, &extmem, loadaddr, floppy, marks)) 368 goto out; 369 370 boot_argv[0] = boothowto; 371 boot_argv[1] = 0; 372 boot_argv[2] = vtophys(bootinfo); /* old cyl offset */ 373 boot_argv[3] = marks[MARK_END]; 374 boot_argv[4] = extmem; 375 boot_argv[5] = basemem; 376 377 /* pull in any modules if necessary */ 378 if (boot_modules_enabled) { 379 module_init(file); 380 if (btinfo_modulelist) { 381 BI_ADD(btinfo_modulelist, BTINFO_MODULELIST, 382 btinfo_modulelist_size); 383 } 384 } 385 386 userconf_init(); 387 if (btinfo_userconfcommands != NULL) 388 BI_ADD(btinfo_userconfcommands, BTINFO_USERCONFCOMMANDS, 389 btinfo_userconfcommands_size); 390 391 #ifdef DEBUG 392 printf("Start @ 0x%lx [%ld=0x%lx-0x%lx]...\n", marks[MARK_ENTRY], 393 marks[MARK_NSYM], marks[MARK_SYM], marks[MARK_END]); 394 #endif 395 396 btinfo_symtab.nsym = marks[MARK_NSYM]; 397 btinfo_symtab.ssym = marks[MARK_SYM]; 398 btinfo_symtab.esym = marks[MARK_END]; 399 BI_ADD(&btinfo_symtab, BTINFO_SYMTAB, sizeof(struct btinfo_symtab)); 400 401 /* set new video mode if necessary */ 402 vbe_commit(); 403 BI_ADD(&btinfo_framebuffer, BTINFO_FRAMEBUFFER, 404 sizeof(struct btinfo_framebuffer)); 405 406 if (callback != NULL) 407 (*callback)(); 408 startprog(marks[MARK_ENTRY], BOOT_NARGS, boot_argv, 409 x86_trunc_page(basemem*1024)); 410 panic("exec returned"); 411 412 out: 413 BI_FREE(); 414 bootinfo = NULL; 415 return -1; 416 } 417 418 static void 419 extract_device(const char *path, char *buf, size_t buflen) 420 { 421 size_t i; 422 423 if (strchr(path, ':') != NULL) { 424 for (i = 0; i < buflen - 2 && path[i] != ':'; i++) 425 buf[i] = path[i]; 426 buf[i++] = ':'; 427 buf[i] = '\0'; 428 } else 429 buf[0] = '\0'; 430 } 431 432 static const char * 433 module_path(boot_module_t *bm, const char *kdev) 434 { 435 static char buf[256]; 436 char name_buf[256], dev_buf[64]; 437 const char *name, *name2, *p; 438 439 name = bm->bm_path; 440 for (name2 = name; *name2; ++name2) { 441 if (*name2 == ' ' || *name2 == '\t') { 442 strlcpy(name_buf, name, sizeof(name_buf)); 443 if ((uintptr_t)name2 - (uintptr_t)name < sizeof(name_buf)) 444 name_buf[name2 - name] = '\0'; 445 name = name_buf; 446 break; 447 } 448 } 449 if ((p = strchr(name, ':')) != NULL) { 450 /* device specified, use it */ 451 if (p[1] == '/') 452 snprintf(buf, sizeof(buf), "%s", name); 453 else { 454 p++; 455 extract_device(name, dev_buf, sizeof(dev_buf)); 456 snprintf(buf, sizeof(buf), "%s%s/%s/%s.kmod", 457 dev_buf, module_base, p, p); 458 } 459 } else { 460 /* device not specified; load from kernel device if known */ 461 if (name[0] == '/') 462 snprintf(buf, sizeof(buf), "%s%s", kdev, name); 463 else 464 snprintf(buf, sizeof(buf), "%s%s/%s/%s.kmod", 465 kdev, module_base, name, name); 466 } 467 468 return buf; 469 } 470 471 static int 472 module_open(boot_module_t *bm, int mode, const char *kdev, bool doload) 473 { 474 int fd; 475 const char *path; 476 477 /* check the expanded path first */ 478 path = module_path(bm, kdev); 479 fd = open(path, mode); 480 if (fd != -1) { 481 if ((howto & AB_SILENT) == 0 && doload) 482 printf("Loading %s ", path); 483 } else { 484 /* now attempt the raw path provided */ 485 fd = open(bm->bm_path, mode); 486 if (fd != -1 && (howto & AB_SILENT) == 0 && doload) 487 printf("Loading %s ", bm->bm_path); 488 } 489 if (!doload && fd == -1) { 490 printf("WARNING: couldn't open %s", bm->bm_path); 491 if (strcmp(bm->bm_path, path) != 0) 492 printf(" (%s)", path); 493 printf("\n"); 494 } 495 return fd; 496 } 497 498 static void 499 module_init(const char *kernel_path) 500 { 501 struct bi_modulelist_entry *bi; 502 struct stat st; 503 const char *machine; 504 char kdev[64]; 505 char *buf; 506 boot_module_t *bm; 507 ssize_t len; 508 off_t off; 509 int err, fd, nfail = 0; 510 511 extract_device(kernel_path, kdev, sizeof(kdev)); 512 513 switch (netbsd_elf_class) { 514 case ELFCLASS32: 515 machine = "i386"; 516 break; 517 case ELFCLASS64: 518 machine = "amd64"; 519 break; 520 default: 521 machine = "generic"; 522 break; 523 } 524 if (netbsd_version / 1000000 % 100 == 99) { 525 /* -current */ 526 snprintf(module_base, sizeof(module_base), 527 "/stand/%s/%d.%d.%d/modules", machine, 528 netbsd_version / 100000000, 529 netbsd_version / 1000000 % 100, 530 netbsd_version / 100 % 100); 531 } else if (netbsd_version != 0) { 532 /* release */ 533 snprintf(module_base, sizeof(module_base), 534 "/stand/%s/%d.%d/modules", machine, 535 netbsd_version / 100000000, 536 netbsd_version / 1000000 % 100); 537 } 538 539 /* First, see which modules are valid and calculate btinfo size */ 540 len = sizeof(struct btinfo_modulelist); 541 for (bm = boot_modules; bm; bm = bm->bm_next) { 542 fd = module_open(bm, 0, kdev, false); 543 if (fd == -1) { 544 bm->bm_len = -1; 545 ++nfail; 546 continue; 547 } 548 err = fstat(fd, &st); 549 if (err == -1 || st.st_size == -1) { 550 printf("WARNING: couldn't stat %s\n", bm->bm_path); 551 close(fd); 552 bm->bm_len = -1; 553 ++nfail; 554 continue; 555 } 556 bm->bm_len = st.st_size; 557 close(fd); 558 len += sizeof(struct bi_modulelist_entry); 559 } 560 561 /* Allocate the module list */ 562 btinfo_modulelist = alloc(len); 563 if (btinfo_modulelist == NULL) { 564 printf("WARNING: couldn't allocate module list\n"); 565 wait_sec(MODULE_WARNING_SEC); 566 return; 567 } 568 memset(btinfo_modulelist, 0, len); 569 btinfo_modulelist_size = len; 570 571 /* Fill in btinfo structure */ 572 buf = (char *)btinfo_modulelist; 573 btinfo_modulelist->num = 0; 574 off = sizeof(struct btinfo_modulelist); 575 576 for (bm = boot_modules; bm; bm = bm->bm_next) { 577 if (bm->bm_len == -1) 578 continue; 579 fd = module_open(bm, 0, kdev, true); 580 if (fd == -1) 581 continue; 582 image_end = (image_end + PAGE_SIZE - 1) & ~(PAGE_SIZE - 1); 583 len = pread(fd, (void *)(uintptr_t)image_end, SSIZE_MAX); 584 if (len < bm->bm_len) { 585 if ((howto & AB_SILENT) != 0) 586 printf("Loading %s ", bm->bm_path); 587 printf(" FAILED\n"); 588 } else { 589 btinfo_modulelist->num++; 590 bi = (struct bi_modulelist_entry *)(buf + off); 591 off += sizeof(struct bi_modulelist_entry); 592 strncpy(bi->path, bm->bm_path, sizeof(bi->path) - 1); 593 bi->base = image_end; 594 bi->len = len; 595 switch (bm->bm_type) { 596 case BM_TYPE_KMOD: 597 bi->type = BI_MODULE_ELF; 598 break; 599 case BM_TYPE_IMAGE: 600 bi->type = BI_MODULE_IMAGE; 601 break; 602 case BM_TYPE_FS: 603 bi->type = BI_MODULE_FS; 604 break; 605 case BM_TYPE_RND: 606 default: 607 /* safest -- rnd checks the sha1 */ 608 bi->type = BI_MODULE_RND; 609 break; 610 } 611 if ((howto & AB_SILENT) == 0) 612 printf(" \n"); 613 } 614 if (len > 0) 615 image_end += len; 616 close(fd); 617 } 618 btinfo_modulelist->endpa = image_end; 619 620 if (nfail > 0) { 621 printf("WARNING: %d module%s failed to load\n", 622 nfail, nfail == 1 ? "" : "s"); 623 #if notyet 624 wait_sec(MODULE_WARNING_SEC); 625 #endif 626 } 627 } 628 629 static void 630 userconf_init(void) 631 { 632 size_t count, len; 633 userconf_command_t *uc; 634 char *buf; 635 off_t off; 636 637 /* Calculate the userconf commands list size */ 638 count = 0; 639 for (uc = userconf_commands; uc != NULL; uc = uc->uc_next) 640 count++; 641 len = sizeof(*btinfo_userconfcommands) + 642 count * sizeof(struct bi_userconfcommand); 643 644 /* Allocate the userconf commands list */ 645 btinfo_userconfcommands = alloc(len); 646 if (btinfo_userconfcommands == NULL) { 647 printf("WARNING: couldn't allocate userconf commands list\n"); 648 return; 649 } 650 memset(btinfo_userconfcommands, 0, len); 651 btinfo_userconfcommands_size = len; 652 653 /* Fill in btinfo structure */ 654 buf = (char *)btinfo_userconfcommands; 655 off = sizeof(*btinfo_userconfcommands); 656 btinfo_userconfcommands->num = 0; 657 for (uc = userconf_commands; uc != NULL; uc = uc->uc_next) { 658 struct bi_userconfcommand *bi; 659 bi = (struct bi_userconfcommand *)(buf + off); 660 strncpy(bi->text, uc->uc_text, sizeof(bi->text) - 1); 661 662 off += sizeof(*bi); 663 btinfo_userconfcommands->num++; 664 } 665 } 666 667 int 668 exec_multiboot(const char *file, char *args) 669 { 670 struct multiboot_info *mbi; 671 struct multiboot_module *mbm; 672 struct bi_modulelist_entry *bim; 673 int i, len; 674 u_long marks[MARK_MAX]; 675 u_long extmem; 676 u_long basemem; 677 char *cmdline; 678 679 mbi = alloc(sizeof(struct multiboot_info)); 680 mbi->mi_flags = MULTIBOOT_INFO_HAS_MEMORY; 681 682 if (common_load_kernel(file, &basemem, &extmem, 0, 0, marks)) 683 goto out; 684 685 mbi->mi_mem_upper = extmem; 686 mbi->mi_mem_lower = basemem; 687 688 if (args) { 689 mbi->mi_flags |= MULTIBOOT_INFO_HAS_CMDLINE; 690 len = strlen(file) + 1 + strlen(args) + 1; 691 cmdline = alloc(len); 692 snprintf(cmdline, len, "%s %s", file, args); 693 mbi->mi_cmdline = (char *) vtophys(cmdline); 694 } 695 696 /* pull in any modules if necessary */ 697 if (boot_modules_enabled) { 698 module_init(file); 699 if (btinfo_modulelist) { 700 mbm = alloc(sizeof(struct multiboot_module) * 701 btinfo_modulelist->num); 702 703 bim = (struct bi_modulelist_entry *) 704 (((char *) btinfo_modulelist) + 705 sizeof(struct btinfo_modulelist)); 706 for (i = 0; i < btinfo_modulelist->num; i++) { 707 mbm[i].mmo_start = bim->base; 708 mbm[i].mmo_end = bim->base + bim->len; 709 mbm[i].mmo_string = (char *)vtophys(bim->path); 710 mbm[i].mmo_reserved = 0; 711 bim++; 712 } 713 mbi->mi_flags |= MULTIBOOT_INFO_HAS_MODS; 714 mbi->mi_mods_count = btinfo_modulelist->num; 715 mbi->mi_mods_addr = vtophys(mbm); 716 } 717 } 718 719 #ifdef DEBUG 720 printf("Start @ 0x%lx [%ld=0x%lx-0x%lx]...\n", marks[MARK_ENTRY], 721 marks[MARK_NSYM], marks[MARK_SYM], marks[MARK_END]); 722 #endif 723 724 725 #if 0 726 if (btinfo_symtab.nsym) { 727 mbi->mi_flags |= MULTIBOOT_INFO_HAS_ELF_SYMS; 728 mbi->mi_elfshdr_addr = marks[MARK_SYM]; 729 btinfo_symtab.nsym = marks[MARK_NSYM]; 730 btinfo_symtab.ssym = marks[MARK_SYM]; 731 btinfo_symtab.esym = marks[MARK_END]; 732 #endif 733 734 multiboot(marks[MARK_ENTRY], vtophys(mbi), 735 x86_trunc_page(mbi->mi_mem_lower*1024)); 736 panic("exec returned"); 737 738 out: 739 dealloc(mbi, 0); 740 return -1; 741 } 742 743 void 744 x86_progress(const char *fmt, ...) 745 { 746 va_list ap; 747 748 if ((howto & AB_SILENT) != 0) 749 return; 750 va_start(ap, fmt); 751 vprintf(fmt, ap); 752 va_end(ap); 753 } 754
Indexes created Tue Sep 23 02:09:52 GMT 2025