exec.c revision 1.52
1 /* $NetBSD: exec.c,v 1.52 2013/11/24 17:16:29 jakllsch 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 <machine/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(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(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(fsmod); 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 u_long 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 if (common_load_kernel(file, &basemem, &extmem, loadaddr, floppy, marks)) 366 goto out; 367 368 boot_argv[0] = boothowto; 369 boot_argv[1] = 0; 370 boot_argv[2] = vtophys(bootinfo); /* old cyl offset */ 371 boot_argv[3] = marks[MARK_END]; 372 boot_argv[4] = extmem; 373 boot_argv[5] = basemem; 374 375 /* pull in any modules if necessary */ 376 if (boot_modules_enabled) { 377 module_init(file); 378 if (btinfo_modulelist) { 379 BI_ADD(btinfo_modulelist, BTINFO_MODULELIST, 380 btinfo_modulelist_size); 381 } 382 } 383 384 userconf_init(); 385 if (btinfo_userconfcommands != NULL) 386 BI_ADD(btinfo_userconfcommands, BTINFO_USERCONFCOMMANDS, 387 btinfo_userconfcommands_size); 388 389 #ifdef DEBUG 390 printf("Start @ 0x%lx [%ld=0x%lx-0x%lx]...\n", marks[MARK_ENTRY], 391 marks[MARK_NSYM], marks[MARK_SYM], marks[MARK_END]); 392 #endif 393 394 btinfo_symtab.nsym = marks[MARK_NSYM]; 395 btinfo_symtab.ssym = marks[MARK_SYM]; 396 btinfo_symtab.esym = marks[MARK_END]; 397 BI_ADD(&btinfo_symtab, BTINFO_SYMTAB, sizeof(struct btinfo_symtab)); 398 399 /* set new video mode if necessary */ 400 vbe_commit(); 401 BI_ADD(&btinfo_framebuffer, BTINFO_FRAMEBUFFER, 402 sizeof(struct btinfo_framebuffer)); 403 404 if (callback != NULL) 405 (*callback)(); 406 startprog(marks[MARK_ENTRY], BOOT_NARGS, boot_argv, 407 x86_trunc_page(basemem*1024)); 408 panic("exec returned"); 409 410 out: 411 BI_FREE(); 412 bootinfo = 0; 413 return -1; 414 } 415 416 static void 417 extract_device(const char *path, char *buf, size_t buflen) 418 { 419 int i; 420 421 if (strchr(path, ':') != NULL) { 422 for (i = 0; i < buflen - 2 && path[i] != ':'; i++) 423 buf[i] = path[i]; 424 buf[i++] = ':'; 425 buf[i] = '\0'; 426 } else 427 buf[0] = '\0'; 428 } 429 430 static const char * 431 module_path(boot_module_t *bm, const char *kdev) 432 { 433 static char buf[256]; 434 char name_buf[256], dev_buf[64]; 435 const char *name, *name2, *p; 436 437 name = bm->bm_path; 438 for (name2 = name; *name2; ++name2) { 439 if (*name2 == ' ' || *name2 == '\t') { 440 strlcpy(name_buf, name, sizeof(name_buf)); 441 if (name2 - name < sizeof(name_buf)) 442 name_buf[name2 - name] = '\0'; 443 name = name_buf; 444 break; 445 } 446 } 447 if ((p = strchr(name, ':')) != NULL) { 448 /* device specified, use it */ 449 if (p[1] == '/') 450 snprintf(buf, sizeof(buf), "%s", name); 451 else { 452 p++; 453 extract_device(name, dev_buf, sizeof(dev_buf)); 454 snprintf(buf, sizeof(buf), "%s%s/%s/%s.kmod", 455 dev_buf, module_base, p, p); 456 } 457 } else { 458 /* device not specified; load from kernel device if known */ 459 if (name[0] == '/') 460 snprintf(buf, sizeof(buf), "%s%s", kdev, name); 461 else 462 snprintf(buf, sizeof(buf), "%s%s/%s/%s.kmod", 463 kdev, module_base, name, name); 464 } 465 466 return buf; 467 } 468 469 static int 470 module_open(boot_module_t *bm, int mode, const char *kdev, bool doload) 471 { 472 int fd; 473 const char *path; 474 475 /* check the expanded path first */ 476 path = module_path(bm, kdev); 477 fd = open(path, mode); 478 if (fd != -1) { 479 if ((howto & AB_SILENT) == 0 && doload) 480 printf("Loading %s ", path); 481 } else { 482 /* now attempt the raw path provided */ 483 fd = open(bm->bm_path, mode); 484 if (fd != -1 && (howto & AB_SILENT) == 0 && doload) 485 printf("Loading %s ", bm->bm_path); 486 } 487 if (!doload && fd == -1) { 488 printf("WARNING: couldn't open %s", bm->bm_path); 489 if (strcmp(bm->bm_path, path) != 0) 490 printf(" (%s)", path); 491 printf("\n"); 492 } 493 return fd; 494 } 495 496 static void 497 module_init(const char *kernel_path) 498 { 499 struct bi_modulelist_entry *bi; 500 struct stat st; 501 const char *machine; 502 char kdev[64]; 503 char *buf; 504 boot_module_t *bm; 505 size_t len; 506 off_t off; 507 int err, fd, nfail = 0; 508 509 extract_device(kernel_path, kdev, sizeof(kdev)); 510 511 switch (netbsd_elf_class) { 512 case ELFCLASS32: 513 machine = "i386"; 514 break; 515 case ELFCLASS64: 516 machine = "amd64"; 517 break; 518 default: 519 machine = "generic"; 520 break; 521 } 522 if (netbsd_version / 1000000 % 100 == 99) { 523 /* -current */ 524 snprintf(module_base, sizeof(module_base), 525 "/stand/%s/%d.%d.%d/modules", machine, 526 netbsd_version / 100000000, 527 netbsd_version / 1000000 % 100, 528 netbsd_version / 100 % 100); 529 } else if (netbsd_version != 0) { 530 /* release */ 531 snprintf(module_base, sizeof(module_base), 532 "/stand/%s/%d.%d/modules", machine, 533 netbsd_version / 100000000, 534 netbsd_version / 1000000 % 100); 535 } 536 537 /* First, see which modules are valid and calculate btinfo size */ 538 len = sizeof(struct btinfo_modulelist); 539 for (bm = boot_modules; bm; bm = bm->bm_next) { 540 fd = module_open(bm, 0, kdev, false); 541 if (fd == -1) { 542 bm->bm_len = -1; 543 ++nfail; 544 continue; 545 } 546 err = fstat(fd, &st); 547 if (err == -1 || st.st_size == -1) { 548 printf("WARNING: couldn't stat %s\n", bm->bm_path); 549 close(fd); 550 bm->bm_len = -1; 551 ++nfail; 552 continue; 553 } 554 bm->bm_len = st.st_size; 555 close(fd); 556 len += sizeof(struct bi_modulelist_entry); 557 } 558 559 /* Allocate the module list */ 560 btinfo_modulelist = alloc(len); 561 if (btinfo_modulelist == NULL) { 562 printf("WARNING: couldn't allocate module list\n"); 563 wait_sec(MODULE_WARNING_SEC); 564 return; 565 } 566 memset(btinfo_modulelist, 0, len); 567 btinfo_modulelist_size = len; 568 569 /* Fill in btinfo structure */ 570 buf = (char *)btinfo_modulelist; 571 btinfo_modulelist->num = 0; 572 off = sizeof(struct btinfo_modulelist); 573 574 for (bm = boot_modules; bm; bm = bm->bm_next) { 575 if (bm->bm_len == -1) 576 continue; 577 fd = module_open(bm, 0, kdev, true); 578 if (fd == -1) 579 continue; 580 image_end = (image_end + PAGE_SIZE - 1) & ~(PAGE_SIZE - 1); 581 len = pread(fd, (void *)(uintptr_t)image_end, SSIZE_MAX); 582 if (len < bm->bm_len) { 583 if ((howto & AB_SILENT) != 0) 584 printf("Loading %s ", bm->bm_path); 585 printf(" FAILED\n"); 586 } else { 587 btinfo_modulelist->num++; 588 bi = (struct bi_modulelist_entry *)(buf + off); 589 off += sizeof(struct bi_modulelist_entry); 590 strncpy(bi->path, bm->bm_path, sizeof(bi->path) - 1); 591 bi->base = image_end; 592 bi->len = len; 593 switch (bm->bm_type) { 594 case BM_TYPE_KMOD: 595 bi->type = BI_MODULE_ELF; 596 break; 597 case BM_TYPE_IMAGE: 598 bi->type = BI_MODULE_IMAGE; 599 break; 600 case BM_TYPE_FS: 601 bi->type = BI_MODULE_FS; 602 break; 603 case BM_TYPE_RND: 604 default: 605 /* safest -- rnd checks the sha1 */ 606 bi->type = BI_MODULE_RND; 607 break; 608 } 609 if ((howto & AB_SILENT) == 0) 610 printf(" \n"); 611 } 612 if (len > 0) 613 image_end += len; 614 close(fd); 615 } 616 btinfo_modulelist->endpa = image_end; 617 618 if (nfail > 0) { 619 printf("WARNING: %d module%s failed to load\n", 620 nfail, nfail == 1 ? "" : "s"); 621 #if notyet 622 wait_sec(MODULE_WARNING_SEC); 623 #endif 624 } 625 } 626 627 static void 628 userconf_init(void) 629 { 630 size_t count, len; 631 userconf_command_t *uc; 632 char *buf; 633 off_t off; 634 635 /* Calculate the userconf commands list size */ 636 count = 0; 637 for (uc = userconf_commands; uc != NULL; uc = uc->uc_next) 638 count++; 639 len = sizeof(btinfo_userconfcommands) + 640 count * sizeof(struct bi_userconfcommand); 641 642 /* Allocate the userconf commands list */ 643 btinfo_userconfcommands = alloc(len); 644 if (btinfo_userconfcommands == NULL) { 645 printf("WARNING: couldn't allocate userconf commands list\n"); 646 return; 647 } 648 memset(btinfo_userconfcommands, 0, len); 649 btinfo_userconfcommands_size = len; 650 651 /* Fill in btinfo structure */ 652 buf = (char *)btinfo_userconfcommands; 653 off = sizeof(*btinfo_userconfcommands); 654 btinfo_userconfcommands->num = 0; 655 for (uc = userconf_commands; uc != NULL; uc = uc->uc_next) { 656 struct bi_userconfcommand *bi; 657 bi = (struct bi_userconfcommand *)(buf + off); 658 strncpy(bi->text, uc->uc_text, sizeof(bi->text) - 1); 659 660 off += sizeof(*bi); 661 btinfo_userconfcommands->num++; 662 } 663 } 664 665 int 666 exec_multiboot(const char *file, char *args) 667 { 668 struct multiboot_info *mbi; 669 struct multiboot_module *mbm; 670 struct bi_modulelist_entry *bim; 671 int i, len; 672 u_long marks[MARK_MAX]; 673 u_long extmem; 674 u_long basemem; 675 char *cmdline; 676 677 mbi = alloc(sizeof(struct multiboot_info)); 678 mbi->mi_flags = MULTIBOOT_INFO_HAS_MEMORY; 679 680 if (common_load_kernel(file, &basemem, &extmem, 0, 0, marks)) 681 goto out; 682 683 mbi->mi_mem_upper = extmem; 684 mbi->mi_mem_lower = basemem; 685 686 if (args) { 687 mbi->mi_flags |= MULTIBOOT_INFO_HAS_CMDLINE; 688 len = strlen(file) + 1 + strlen(args) + 1; 689 cmdline = alloc(len); 690 snprintf(cmdline, len, "%s %s", file, args); 691 mbi->mi_cmdline = (char *) vtophys(cmdline); 692 } 693 694 /* pull in any modules if necessary */ 695 if (boot_modules_enabled) { 696 module_init(file); 697 if (btinfo_modulelist) { 698 mbm = alloc(sizeof(struct multiboot_module) * 699 btinfo_modulelist->num); 700 701 bim = (struct bi_modulelist_entry *) 702 (((char *) btinfo_modulelist) + 703 sizeof(struct btinfo_modulelist)); 704 for (i = 0; i < btinfo_modulelist->num; i++) { 705 mbm[i].mmo_start = bim->base; 706 mbm[i].mmo_end = bim->base + bim->len; 707 mbm[i].mmo_string = (char *)vtophys(bim->path); 708 mbm[i].mmo_reserved = 0; 709 bim++; 710 } 711 mbi->mi_flags |= MULTIBOOT_INFO_HAS_MODS; 712 mbi->mi_mods_count = btinfo_modulelist->num; 713 mbi->mi_mods_addr = vtophys(mbm); 714 } 715 } 716 717 #ifdef DEBUG 718 printf("Start @ 0x%lx [%ld=0x%lx-0x%lx]...\n", marks[MARK_ENTRY], 719 marks[MARK_NSYM], marks[MARK_SYM], marks[MARK_END]); 720 #endif 721 722 723 #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 Mon Sep 22 21:09:42 GMT 2025