1 /* 2 * (C) Copyright 2000-2009 3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. 4 * 5 * SPDX-License-Identifier: GPL-2.0+ 6 */ 7 8 #ifndef USE_HOSTCC 9 #include <common.h> 10 #include <bootstage.h> 11 #include <bzlib.h> 12 #include <errno.h> 13 #include <fdt_support.h> 14 #include <lmb.h> 15 #include <malloc.h> 16 #include <mapmem.h> 17 #include <asm/io.h> 18 #include <linux/lzo.h> 19 #include <lzma/LzmaTypes.h> 20 #include <lzma/LzmaDec.h> 21 #include <lzma/LzmaTools.h> 22 #if defined(CONFIG_CMD_USB) 23 #include <usb.h> 24 #endif 25 #else 26 #include "mkimage.h" 27 #endif 28 29 #include <command.h> 30 #include <bootm.h> 31 #include <image.h> 32 33 #ifndef CONFIG_SYS_BOOTM_LEN 34 /* use 8MByte as default max gunzip size */ 35 #define CONFIG_SYS_BOOTM_LEN 0x800000 36 #endif 37 38 #define IH_INITRD_ARCH IH_ARCH_DEFAULT 39 40 #ifndef USE_HOSTCC 41 42 DECLARE_GLOBAL_DATA_PTR; 43 44 static const void *boot_get_kernel(cmd_tbl_t *cmdtp, int flag, int argc, 45 char * const argv[], bootm_headers_t *images, 46 ulong *os_data, ulong *os_len); 47 48 #ifdef CONFIG_LMB 49 static void boot_start_lmb(bootm_headers_t *images) 50 { 51 ulong mem_start; 52 phys_size_t mem_size; 53 54 lmb_init(&images->lmb); 55 56 mem_start = getenv_bootm_low(); 57 mem_size = getenv_bootm_size(); 58 59 lmb_add(&images->lmb, (phys_addr_t)mem_start, mem_size); 60 61 arch_lmb_reserve(&images->lmb); 62 board_lmb_reserve(&images->lmb); 63 } 64 #else 65 #define lmb_reserve(lmb, base, size) 66 static inline void boot_start_lmb(bootm_headers_t *images) { } 67 #endif 68 69 static int bootm_start(cmd_tbl_t *cmdtp, int flag, int argc, 70 char * const argv[]) 71 { 72 memset((void *)&images, 0, sizeof(images)); 73 images.verify = getenv_yesno("verify"); 74 75 boot_start_lmb(&images); 76 77 bootstage_mark_name(BOOTSTAGE_ID_BOOTM_START, "bootm_start"); 78 images.state = BOOTM_STATE_START; 79 80 return 0; 81 } 82 83 static int bootm_find_os(cmd_tbl_t *cmdtp, int flag, int argc, 84 char * const argv[]) 85 { 86 const void *os_hdr; 87 bool ep_found = false; 88 int ret; 89 90 /* get kernel image header, start address and length */ 91 os_hdr = boot_get_kernel(cmdtp, flag, argc, argv, 92 &images, &images.os.image_start, &images.os.image_len); 93 if (images.os.image_len == 0) { 94 puts("ERROR: can't get kernel image!\n"); 95 return 1; 96 } 97 98 /* get image parameters */ 99 switch (genimg_get_format(os_hdr)) { 100 #if defined(CONFIG_IMAGE_FORMAT_LEGACY) 101 case IMAGE_FORMAT_LEGACY: 102 images.os.type = image_get_type(os_hdr); 103 images.os.comp = image_get_comp(os_hdr); 104 images.os.os = image_get_os(os_hdr); 105 106 images.os.end = image_get_image_end(os_hdr); 107 images.os.load = image_get_load(os_hdr); 108 images.os.arch = image_get_arch(os_hdr); 109 break; 110 #endif 111 #if defined(CONFIG_FIT) 112 case IMAGE_FORMAT_FIT: 113 if (fit_image_get_type(images.fit_hdr_os, 114 images.fit_noffset_os, 115 &images.os.type)) { 116 puts("Can't get image type!\n"); 117 bootstage_error(BOOTSTAGE_ID_FIT_TYPE); 118 return 1; 119 } 120 121 if (fit_image_get_comp(images.fit_hdr_os, 122 images.fit_noffset_os, 123 &images.os.comp)) { 124 puts("Can't get image compression!\n"); 125 bootstage_error(BOOTSTAGE_ID_FIT_COMPRESSION); 126 return 1; 127 } 128 129 if (fit_image_get_os(images.fit_hdr_os, images.fit_noffset_os, 130 &images.os.os)) { 131 puts("Can't get image OS!\n"); 132 bootstage_error(BOOTSTAGE_ID_FIT_OS); 133 return 1; 134 } 135 136 if (fit_image_get_arch(images.fit_hdr_os, 137 images.fit_noffset_os, 138 &images.os.arch)) { 139 puts("Can't get image ARCH!\n"); 140 return 1; 141 } 142 143 images.os.end = fit_get_end(images.fit_hdr_os); 144 145 if (fit_image_get_load(images.fit_hdr_os, images.fit_noffset_os, 146 &images.os.load)) { 147 puts("Can't get image load address!\n"); 148 bootstage_error(BOOTSTAGE_ID_FIT_LOADADDR); 149 return 1; 150 } 151 break; 152 #endif 153 #ifdef CONFIG_ANDROID_BOOT_IMAGE 154 case IMAGE_FORMAT_ANDROID: 155 images.os.type = IH_TYPE_KERNEL; 156 images.os.comp = IH_COMP_NONE; 157 images.os.os = IH_OS_LINUX; 158 159 images.os.end = android_image_get_end(os_hdr); 160 images.os.load = android_image_get_kload(os_hdr); 161 images.ep = images.os.load; 162 ep_found = true; 163 break; 164 #endif 165 default: 166 puts("ERROR: unknown image format type!\n"); 167 return 1; 168 } 169 170 /* If we have a valid setup.bin, we will use that for entry (x86) */ 171 if (images.os.arch == IH_ARCH_I386 || 172 images.os.arch == IH_ARCH_X86_64) { 173 ulong len; 174 175 ret = boot_get_setup(&images, IH_ARCH_I386, &images.ep, &len); 176 if (ret < 0 && ret != -ENOENT) { 177 puts("Could not find a valid setup.bin for x86\n"); 178 return 1; 179 } 180 /* Kernel entry point is the setup.bin */ 181 } else if (images.legacy_hdr_valid) { 182 images.ep = image_get_ep(&images.legacy_hdr_os_copy); 183 #if defined(CONFIG_FIT) 184 } else if (images.fit_uname_os) { 185 int ret; 186 187 ret = fit_image_get_entry(images.fit_hdr_os, 188 images.fit_noffset_os, &images.ep); 189 if (ret) { 190 puts("Can't get entry point property!\n"); 191 return 1; 192 } 193 #endif 194 } else if (!ep_found) { 195 puts("Could not find kernel entry point!\n"); 196 return 1; 197 } 198 199 if (images.os.type == IH_TYPE_KERNEL_NOLOAD) { 200 images.os.load = images.os.image_start; 201 images.ep += images.os.load; 202 } 203 204 images.os.start = (ulong)os_hdr; 205 206 return 0; 207 } 208 209 static int bootm_find_ramdisk(int flag, int argc, char * const argv[]) 210 { 211 int ret; 212 213 /* find ramdisk */ 214 ret = boot_get_ramdisk(argc, argv, &images, IH_INITRD_ARCH, 215 &images.rd_start, &images.rd_end); 216 if (ret) { 217 puts("Ramdisk image is corrupt or invalid\n"); 218 return 1; 219 } 220 221 return 0; 222 } 223 224 #if defined(CONFIG_OF_LIBFDT) 225 static int bootm_find_fdt(int flag, int argc, char * const argv[]) 226 { 227 int ret; 228 229 /* find flattened device tree */ 230 ret = boot_get_fdt(flag, argc, argv, IH_ARCH_DEFAULT, &images, 231 &images.ft_addr, &images.ft_len); 232 if (ret) { 233 puts("Could not find a valid device tree\n"); 234 return 1; 235 } 236 237 set_working_fdt_addr((ulong)images.ft_addr); 238 239 return 0; 240 } 241 #endif 242 243 #if defined(CONFIG_FIT) 244 static int bootm_find_loadables(int flag, int argc, char * const argv[]) 245 { 246 int ret; 247 248 /* find all of the loadables */ 249 ret = boot_get_loadable(argc, argv, &images, IH_ARCH_DEFAULT, 250 NULL, NULL); 251 if (ret) { 252 printf("Loadable(s) is corrupt or invalid\n"); 253 return 1; 254 } 255 256 return 0; 257 } 258 #endif 259 260 int bootm_find_ramdisk_fdt(int flag, int argc, char * const argv[]) 261 { 262 if (bootm_find_ramdisk(flag, argc, argv)) 263 return 1; 264 265 #if defined(CONFIG_OF_LIBFDT) 266 if (bootm_find_fdt(flag, argc, argv)) 267 return 1; 268 #endif 269 270 #if defined(CONFIG_FIT) 271 if (bootm_find_loadables(flag, argc, argv)) 272 return 1; 273 #endif 274 275 return 0; 276 } 277 278 static int bootm_find_other(cmd_tbl_t *cmdtp, int flag, int argc, 279 char * const argv[]) 280 { 281 if (((images.os.type == IH_TYPE_KERNEL) || 282 (images.os.type == IH_TYPE_KERNEL_NOLOAD) || 283 (images.os.type == IH_TYPE_MULTI)) && 284 (images.os.os == IH_OS_LINUX || 285 images.os.os == IH_OS_VXWORKS)) 286 return bootm_find_ramdisk_fdt(flag, argc, argv); 287 288 return 0; 289 } 290 #endif /* USE_HOSTC */ 291 292 /** 293 * print_decomp_msg() - Print a suitable decompression/loading message 294 * 295 * @type: OS type (IH_OS_...) 296 * @comp_type: Compression type being used (IH_COMP_...) 297 * @is_xip: true if the load address matches the image start 298 */ 299 static void print_decomp_msg(int comp_type, int type, bool is_xip) 300 { 301 const char *name = genimg_get_type_name(type); 302 303 if (comp_type == IH_COMP_NONE) 304 printf(" %s %s ... ", is_xip ? "XIP" : "Loading", name); 305 else 306 printf(" Uncompressing %s ... ", name); 307 } 308 309 /** 310 * handle_decomp_error() - display a decompression error 311 * 312 * This function tries to produce a useful message. In the case where the 313 * uncompressed size is the same as the available space, we can assume that 314 * the image is too large for the buffer. 315 * 316 * @comp_type: Compression type being used (IH_COMP_...) 317 * @uncomp_size: Number of bytes uncompressed 318 * @unc_len: Amount of space available for decompression 319 * @ret: Error code to report 320 * @return BOOTM_ERR_RESET, indicating that the board must be reset 321 */ 322 static int handle_decomp_error(int comp_type, size_t uncomp_size, 323 size_t unc_len, int ret) 324 { 325 const char *name = genimg_get_comp_name(comp_type); 326 327 if (uncomp_size >= unc_len) 328 printf("Image too large: increase CONFIG_SYS_BOOTM_LEN\n"); 329 else 330 printf("%s: uncompress error %d\n", name, ret); 331 332 /* 333 * The decompression routines are now safe, so will not write beyond 334 * their bounds. Probably it is not necessary to reset, but maintain 335 * the current behaviour for now. 336 */ 337 printf("Must RESET board to recover\n"); 338 #ifndef USE_HOSTCC 339 bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE); 340 #endif 341 342 return BOOTM_ERR_RESET; 343 } 344 345 int bootm_decomp_image(int comp, ulong load, ulong image_start, int type, 346 void *load_buf, void *image_buf, ulong image_len, 347 uint unc_len, ulong *load_end) 348 { 349 int ret = 0; 350 351 *load_end = load; 352 print_decomp_msg(comp, type, load == image_start); 353 354 /* 355 * Load the image to the right place, decompressing if needed. After 356 * this, image_len will be set to the number of uncompressed bytes 357 * loaded, ret will be non-zero on error. 358 */ 359 switch (comp) { 360 case IH_COMP_NONE: 361 if (load == image_start) 362 break; 363 if (image_len <= unc_len) 364 memmove_wd(load_buf, image_buf, image_len, CHUNKSZ); 365 else 366 ret = 1; 367 break; 368 #ifdef CONFIG_GZIP 369 case IH_COMP_GZIP: { 370 ret = gunzip(load_buf, unc_len, image_buf, &image_len); 371 break; 372 } 373 #endif /* CONFIG_GZIP */ 374 #ifdef CONFIG_BZIP2 375 case IH_COMP_BZIP2: { 376 uint size = unc_len; 377 378 /* 379 * If we've got less than 4 MB of malloc() space, 380 * use slower decompression algorithm which requires 381 * at most 2300 KB of memory. 382 */ 383 ret = BZ2_bzBuffToBuffDecompress(load_buf, &size, 384 image_buf, image_len, 385 CONFIG_SYS_MALLOC_LEN < (4096 * 1024), 0); 386 image_len = size; 387 break; 388 } 389 #endif /* CONFIG_BZIP2 */ 390 #ifdef CONFIG_LZMA 391 case IH_COMP_LZMA: { 392 SizeT lzma_len = unc_len; 393 394 ret = lzmaBuffToBuffDecompress(load_buf, &lzma_len, 395 image_buf, image_len); 396 image_len = lzma_len; 397 break; 398 } 399 #endif /* CONFIG_LZMA */ 400 #ifdef CONFIG_LZO 401 case IH_COMP_LZO: { 402 size_t size = unc_len; 403 404 ret = lzop_decompress(image_buf, image_len, load_buf, &size); 405 image_len = size; 406 break; 407 } 408 #endif /* CONFIG_LZO */ 409 default: 410 printf("Unimplemented compression type %d\n", comp); 411 return BOOTM_ERR_UNIMPLEMENTED; 412 } 413 414 if (ret) 415 return handle_decomp_error(comp, image_len, unc_len, ret); 416 *load_end = load + image_len; 417 418 puts("OK\n"); 419 420 return 0; 421 } 422 423 #ifndef USE_HOSTCC 424 static int bootm_load_os(bootm_headers_t *images, unsigned long *load_end, 425 int boot_progress) 426 { 427 image_info_t os = images->os; 428 ulong load = os.load; 429 ulong blob_start = os.start; 430 ulong blob_end = os.end; 431 ulong image_start = os.image_start; 432 ulong image_len = os.image_len; 433 bool no_overlap; 434 void *load_buf, *image_buf; 435 int err; 436 437 load_buf = map_sysmem(load, 0); 438 image_buf = map_sysmem(os.image_start, image_len); 439 err = bootm_decomp_image(os.comp, load, os.image_start, os.type, 440 load_buf, image_buf, image_len, 441 CONFIG_SYS_BOOTM_LEN, load_end); 442 if (err) { 443 bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE); 444 return err; 445 } 446 flush_cache(load, (*load_end - load) * sizeof(ulong)); 447 448 debug(" kernel loaded at 0x%08lx, end = 0x%08lx\n", load, *load_end); 449 bootstage_mark(BOOTSTAGE_ID_KERNEL_LOADED); 450 451 no_overlap = (os.comp == IH_COMP_NONE && load == image_start); 452 453 if (!no_overlap && (load < blob_end) && (*load_end > blob_start)) { 454 debug("images.os.start = 0x%lX, images.os.end = 0x%lx\n", 455 blob_start, blob_end); 456 debug("images.os.load = 0x%lx, load_end = 0x%lx\n", load, 457 *load_end); 458 459 /* Check what type of image this is. */ 460 if (images->legacy_hdr_valid) { 461 if (image_get_type(&images->legacy_hdr_os_copy) 462 == IH_TYPE_MULTI) 463 puts("WARNING: legacy format multi component image overwritten\n"); 464 return BOOTM_ERR_OVERLAP; 465 } else { 466 puts("ERROR: new format image overwritten - must RESET the board to recover\n"); 467 bootstage_error(BOOTSTAGE_ID_OVERWRITTEN); 468 return BOOTM_ERR_RESET; 469 } 470 } 471 472 return 0; 473 } 474 475 /** 476 * bootm_disable_interrupts() - Disable interrupts in preparation for load/boot 477 * 478 * @return interrupt flag (0 if interrupts were disabled, non-zero if they were 479 * enabled) 480 */ 481 ulong bootm_disable_interrupts(void) 482 { 483 ulong iflag; 484 485 /* 486 * We have reached the point of no return: we are going to 487 * overwrite all exception vector code, so we cannot easily 488 * recover from any failures any more... 489 */ 490 iflag = disable_interrupts(); 491 #ifdef CONFIG_NETCONSOLE 492 /* Stop the ethernet stack if NetConsole could have left it up */ 493 eth_halt(); 494 eth_unregister(eth_get_dev()); 495 #endif 496 497 #if defined(CONFIG_CMD_USB) 498 /* 499 * turn off USB to prevent the host controller from writing to the 500 * SDRAM while Linux is booting. This could happen (at least for OHCI 501 * controller), because the HCCA (Host Controller Communication Area) 502 * lies within the SDRAM and the host controller writes continously to 503 * this area (as busmaster!). The HccaFrameNumber is for example 504 * updated every 1 ms within the HCCA structure in SDRAM! For more 505 * details see the OpenHCI specification. 506 */ 507 usb_stop(); 508 #endif 509 return iflag; 510 } 511 512 #if defined(CONFIG_SILENT_CONSOLE) && !defined(CONFIG_SILENT_U_BOOT_ONLY) 513 514 #define CONSOLE_ARG "console=" 515 #define CONSOLE_ARG_LEN (sizeof(CONSOLE_ARG) - 1) 516 517 static void fixup_silent_linux(void) 518 { 519 char *buf; 520 const char *env_val; 521 char *cmdline = getenv("bootargs"); 522 int want_silent; 523 524 /* 525 * Only fix cmdline when requested. The environment variable can be: 526 * 527 * no - we never fixup 528 * yes - we always fixup 529 * unset - we rely on the console silent flag 530 */ 531 want_silent = getenv_yesno("silent_linux"); 532 if (want_silent == 0) 533 return; 534 else if (want_silent == -1 && !(gd->flags & GD_FLG_SILENT)) 535 return; 536 537 debug("before silent fix-up: %s\n", cmdline); 538 if (cmdline && (cmdline[0] != '\0')) { 539 char *start = strstr(cmdline, CONSOLE_ARG); 540 541 /* Allocate space for maximum possible new command line */ 542 buf = malloc(strlen(cmdline) + 1 + CONSOLE_ARG_LEN + 1); 543 if (!buf) { 544 debug("%s: out of memory\n", __func__); 545 return; 546 } 547 548 if (start) { 549 char *end = strchr(start, ' '); 550 int num_start_bytes = start - cmdline + CONSOLE_ARG_LEN; 551 552 strncpy(buf, cmdline, num_start_bytes); 553 if (end) 554 strcpy(buf + num_start_bytes, end); 555 else 556 buf[num_start_bytes] = '\0'; 557 } else { 558 sprintf(buf, "%s %s", cmdline, CONSOLE_ARG); 559 } 560 env_val = buf; 561 } else { 562 buf = NULL; 563 env_val = CONSOLE_ARG; 564 } 565 566 setenv("bootargs", env_val); 567 debug("after silent fix-up: %s\n", env_val); 568 free(buf); 569 } 570 #endif /* CONFIG_SILENT_CONSOLE */ 571 572 /** 573 * Execute selected states of the bootm command. 574 * 575 * Note the arguments to this state must be the first argument, Any 'bootm' 576 * or sub-command arguments must have already been taken. 577 * 578 * Note that if states contains more than one flag it MUST contain 579 * BOOTM_STATE_START, since this handles and consumes the command line args. 580 * 581 * Also note that aside from boot_os_fn functions and bootm_load_os no other 582 * functions we store the return value of in 'ret' may use a negative return 583 * value, without special handling. 584 * 585 * @param cmdtp Pointer to bootm command table entry 586 * @param flag Command flags (CMD_FLAG_...) 587 * @param argc Number of subcommand arguments (0 = no arguments) 588 * @param argv Arguments 589 * @param states Mask containing states to run (BOOTM_STATE_...) 590 * @param images Image header information 591 * @param boot_progress 1 to show boot progress, 0 to not do this 592 * @return 0 if ok, something else on error. Some errors will cause this 593 * function to perform a reboot! If states contains BOOTM_STATE_OS_GO 594 * then the intent is to boot an OS, so this function will not return 595 * unless the image type is standalone. 596 */ 597 int do_bootm_states(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[], 598 int states, bootm_headers_t *images, int boot_progress) 599 { 600 boot_os_fn *boot_fn; 601 ulong iflag = 0; 602 int ret = 0, need_boot_fn; 603 604 images->state |= states; 605 606 /* 607 * Work through the states and see how far we get. We stop on 608 * any error. 609 */ 610 if (states & BOOTM_STATE_START) 611 ret = bootm_start(cmdtp, flag, argc, argv); 612 613 if (!ret && (states & BOOTM_STATE_FINDOS)) 614 ret = bootm_find_os(cmdtp, flag, argc, argv); 615 616 if (!ret && (states & BOOTM_STATE_FINDOTHER)) { 617 ret = bootm_find_other(cmdtp, flag, argc, argv); 618 argc = 0; /* consume the args */ 619 } 620 621 /* Load the OS */ 622 if (!ret && (states & BOOTM_STATE_LOADOS)) { 623 ulong load_end; 624 625 iflag = bootm_disable_interrupts(); 626 ret = bootm_load_os(images, &load_end, 0); 627 if (ret == 0) 628 lmb_reserve(&images->lmb, images->os.load, 629 (load_end - images->os.load)); 630 else if (ret && ret != BOOTM_ERR_OVERLAP) 631 goto err; 632 else if (ret == BOOTM_ERR_OVERLAP) 633 ret = 0; 634 #if defined(CONFIG_SILENT_CONSOLE) && !defined(CONFIG_SILENT_U_BOOT_ONLY) 635 if (images->os.os == IH_OS_LINUX) 636 fixup_silent_linux(); 637 #endif 638 } 639 640 /* Relocate the ramdisk */ 641 #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH 642 if (!ret && (states & BOOTM_STATE_RAMDISK)) { 643 ulong rd_len = images->rd_end - images->rd_start; 644 645 ret = boot_ramdisk_high(&images->lmb, images->rd_start, 646 rd_len, &images->initrd_start, &images->initrd_end); 647 if (!ret) { 648 setenv_hex("initrd_start", images->initrd_start); 649 setenv_hex("initrd_end", images->initrd_end); 650 } 651 } 652 #endif 653 #if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_LMB) 654 if (!ret && (states & BOOTM_STATE_FDT)) { 655 boot_fdt_add_mem_rsv_regions(&images->lmb, images->ft_addr); 656 ret = boot_relocate_fdt(&images->lmb, &images->ft_addr, 657 &images->ft_len); 658 } 659 #endif 660 661 /* From now on, we need the OS boot function */ 662 if (ret) 663 return ret; 664 boot_fn = bootm_os_get_boot_func(images->os.os); 665 need_boot_fn = states & (BOOTM_STATE_OS_CMDLINE | 666 BOOTM_STATE_OS_BD_T | BOOTM_STATE_OS_PREP | 667 BOOTM_STATE_OS_FAKE_GO | BOOTM_STATE_OS_GO); 668 if (boot_fn == NULL && need_boot_fn) { 669 if (iflag) 670 enable_interrupts(); 671 printf("ERROR: booting os '%s' (%d) is not supported\n", 672 genimg_get_os_name(images->os.os), images->os.os); 673 bootstage_error(BOOTSTAGE_ID_CHECK_BOOT_OS); 674 return 1; 675 } 676 677 /* Call various other states that are not generally used */ 678 if (!ret && (states & BOOTM_STATE_OS_CMDLINE)) 679 ret = boot_fn(BOOTM_STATE_OS_CMDLINE, argc, argv, images); 680 if (!ret && (states & BOOTM_STATE_OS_BD_T)) 681 ret = boot_fn(BOOTM_STATE_OS_BD_T, argc, argv, images); 682 if (!ret && (states & BOOTM_STATE_OS_PREP)) 683 ret = boot_fn(BOOTM_STATE_OS_PREP, argc, argv, images); 684 685 #ifdef CONFIG_TRACE 686 /* Pretend to run the OS, then run a user command */ 687 if (!ret && (states & BOOTM_STATE_OS_FAKE_GO)) { 688 char *cmd_list = getenv("fakegocmd"); 689 690 ret = boot_selected_os(argc, argv, BOOTM_STATE_OS_FAKE_GO, 691 images, boot_fn); 692 if (!ret && cmd_list) 693 ret = run_command_list(cmd_list, -1, flag); 694 } 695 #endif 696 697 /* Check for unsupported subcommand. */ 698 if (ret) { 699 puts("subcommand not supported\n"); 700 return ret; 701 } 702 703 /* Now run the OS! We hope this doesn't return */ 704 if (!ret && (states & BOOTM_STATE_OS_GO)) 705 ret = boot_selected_os(argc, argv, BOOTM_STATE_OS_GO, 706 images, boot_fn); 707 708 /* Deal with any fallout */ 709 err: 710 if (iflag) 711 enable_interrupts(); 712 713 if (ret == BOOTM_ERR_UNIMPLEMENTED) 714 bootstage_error(BOOTSTAGE_ID_DECOMP_UNIMPL); 715 else if (ret == BOOTM_ERR_RESET) 716 do_reset(cmdtp, flag, argc, argv); 717 718 return ret; 719 } 720 721 #if defined(CONFIG_IMAGE_FORMAT_LEGACY) 722 /** 723 * image_get_kernel - verify legacy format kernel image 724 * @img_addr: in RAM address of the legacy format image to be verified 725 * @verify: data CRC verification flag 726 * 727 * image_get_kernel() verifies legacy image integrity and returns pointer to 728 * legacy image header if image verification was completed successfully. 729 * 730 * returns: 731 * pointer to a legacy image header if valid image was found 732 * otherwise return NULL 733 */ 734 static image_header_t *image_get_kernel(ulong img_addr, int verify) 735 { 736 image_header_t *hdr = (image_header_t *)img_addr; 737 738 if (!image_check_magic(hdr)) { 739 puts("Bad Magic Number\n"); 740 bootstage_error(BOOTSTAGE_ID_CHECK_MAGIC); 741 return NULL; 742 } 743 bootstage_mark(BOOTSTAGE_ID_CHECK_HEADER); 744 745 if (!image_check_hcrc(hdr)) { 746 puts("Bad Header Checksum\n"); 747 bootstage_error(BOOTSTAGE_ID_CHECK_HEADER); 748 return NULL; 749 } 750 751 bootstage_mark(BOOTSTAGE_ID_CHECK_CHECKSUM); 752 image_print_contents(hdr); 753 754 if (verify) { 755 puts(" Verifying Checksum ... "); 756 if (!image_check_dcrc(hdr)) { 757 printf("Bad Data CRC\n"); 758 bootstage_error(BOOTSTAGE_ID_CHECK_CHECKSUM); 759 return NULL; 760 } 761 puts("OK\n"); 762 } 763 bootstage_mark(BOOTSTAGE_ID_CHECK_ARCH); 764 765 if (!image_check_target_arch(hdr)) { 766 printf("Unsupported Architecture 0x%x\n", image_get_arch(hdr)); 767 bootstage_error(BOOTSTAGE_ID_CHECK_ARCH); 768 return NULL; 769 } 770 return hdr; 771 } 772 #endif 773 774 /** 775 * boot_get_kernel - find kernel image 776 * @os_data: pointer to a ulong variable, will hold os data start address 777 * @os_len: pointer to a ulong variable, will hold os data length 778 * 779 * boot_get_kernel() tries to find a kernel image, verifies its integrity 780 * and locates kernel data. 781 * 782 * returns: 783 * pointer to image header if valid image was found, plus kernel start 784 * address and length, otherwise NULL 785 */ 786 static const void *boot_get_kernel(cmd_tbl_t *cmdtp, int flag, int argc, 787 char * const argv[], bootm_headers_t *images, 788 ulong *os_data, ulong *os_len) 789 { 790 #if defined(CONFIG_IMAGE_FORMAT_LEGACY) 791 image_header_t *hdr; 792 #endif 793 ulong img_addr; 794 const void *buf; 795 const char *fit_uname_config = NULL; 796 const char *fit_uname_kernel = NULL; 797 #if defined(CONFIG_FIT) 798 int os_noffset; 799 #endif 800 801 img_addr = genimg_get_kernel_addr_fit(argc < 1 ? NULL : argv[0], 802 &fit_uname_config, 803 &fit_uname_kernel); 804 805 bootstage_mark(BOOTSTAGE_ID_CHECK_MAGIC); 806 807 /* copy from dataflash if needed */ 808 img_addr = genimg_get_image(img_addr); 809 810 /* check image type, for FIT images get FIT kernel node */ 811 *os_data = *os_len = 0; 812 buf = map_sysmem(img_addr, 0); 813 switch (genimg_get_format(buf)) { 814 #if defined(CONFIG_IMAGE_FORMAT_LEGACY) 815 case IMAGE_FORMAT_LEGACY: 816 printf("## Booting kernel from Legacy Image at %08lx ...\n", 817 img_addr); 818 hdr = image_get_kernel(img_addr, images->verify); 819 if (!hdr) 820 return NULL; 821 bootstage_mark(BOOTSTAGE_ID_CHECK_IMAGETYPE); 822 823 /* get os_data and os_len */ 824 switch (image_get_type(hdr)) { 825 case IH_TYPE_KERNEL: 826 case IH_TYPE_KERNEL_NOLOAD: 827 *os_data = image_get_data(hdr); 828 *os_len = image_get_data_size(hdr); 829 break; 830 case IH_TYPE_MULTI: 831 image_multi_getimg(hdr, 0, os_data, os_len); 832 break; 833 case IH_TYPE_STANDALONE: 834 *os_data = image_get_data(hdr); 835 *os_len = image_get_data_size(hdr); 836 break; 837 default: 838 printf("Wrong Image Type for %s command\n", 839 cmdtp->name); 840 bootstage_error(BOOTSTAGE_ID_CHECK_IMAGETYPE); 841 return NULL; 842 } 843 844 /* 845 * copy image header to allow for image overwrites during 846 * kernel decompression. 847 */ 848 memmove(&images->legacy_hdr_os_copy, hdr, 849 sizeof(image_header_t)); 850 851 /* save pointer to image header */ 852 images->legacy_hdr_os = hdr; 853 854 images->legacy_hdr_valid = 1; 855 bootstage_mark(BOOTSTAGE_ID_DECOMP_IMAGE); 856 break; 857 #endif 858 #if defined(CONFIG_FIT) 859 case IMAGE_FORMAT_FIT: 860 os_noffset = fit_image_load(images, img_addr, 861 &fit_uname_kernel, &fit_uname_config, 862 IH_ARCH_DEFAULT, IH_TYPE_KERNEL, 863 BOOTSTAGE_ID_FIT_KERNEL_START, 864 FIT_LOAD_IGNORED, os_data, os_len); 865 if (os_noffset < 0) 866 return NULL; 867 868 images->fit_hdr_os = map_sysmem(img_addr, 0); 869 images->fit_uname_os = fit_uname_kernel; 870 images->fit_uname_cfg = fit_uname_config; 871 images->fit_noffset_os = os_noffset; 872 break; 873 #endif 874 #ifdef CONFIG_ANDROID_BOOT_IMAGE 875 case IMAGE_FORMAT_ANDROID: 876 printf("## Booting Android Image at 0x%08lx ...\n", img_addr); 877 if (android_image_get_kernel(buf, images->verify, 878 os_data, os_len)) 879 return NULL; 880 break; 881 #endif 882 default: 883 printf("Wrong Image Format for %s command\n", cmdtp->name); 884 bootstage_error(BOOTSTAGE_ID_FIT_KERNEL_INFO); 885 return NULL; 886 } 887 888 debug(" kernel data at 0x%08lx, len = 0x%08lx (%ld)\n", 889 *os_data, *os_len, *os_len); 890 891 return buf; 892 } 893 #else /* USE_HOSTCC */ 894 895 void memmove_wd(void *to, void *from, size_t len, ulong chunksz) 896 { 897 memmove(to, from, len); 898 } 899 900 static int bootm_host_load_image(const void *fit, int req_image_type) 901 { 902 const char *fit_uname_config = NULL; 903 ulong data, len; 904 bootm_headers_t images; 905 int noffset; 906 ulong load_end; 907 uint8_t image_type; 908 uint8_t imape_comp; 909 void *load_buf; 910 int ret; 911 912 memset(&images, '\0', sizeof(images)); 913 images.verify = 1; 914 noffset = fit_image_load(&images, (ulong)fit, 915 NULL, &fit_uname_config, 916 IH_ARCH_DEFAULT, req_image_type, -1, 917 FIT_LOAD_IGNORED, &data, &len); 918 if (noffset < 0) 919 return noffset; 920 if (fit_image_get_type(fit, noffset, &image_type)) { 921 puts("Can't get image type!\n"); 922 return -EINVAL; 923 } 924 925 if (fit_image_get_comp(fit, noffset, &imape_comp)) { 926 puts("Can't get image compression!\n"); 927 return -EINVAL; 928 } 929 930 /* Allow the image to expand by a factor of 4, should be safe */ 931 load_buf = malloc((1 << 20) + len * 4); 932 ret = bootm_decomp_image(imape_comp, 0, data, image_type, load_buf, 933 (void *)data, len, CONFIG_SYS_BOOTM_LEN, 934 &load_end); 935 free(load_buf); 936 937 if (ret && ret != BOOTM_ERR_UNIMPLEMENTED) 938 return ret; 939 940 return 0; 941 } 942 943 int bootm_host_load_images(const void *fit, int cfg_noffset) 944 { 945 static uint8_t image_types[] = { 946 IH_TYPE_KERNEL, 947 IH_TYPE_FLATDT, 948 IH_TYPE_RAMDISK, 949 }; 950 int err = 0; 951 int i; 952 953 for (i = 0; i < ARRAY_SIZE(image_types); i++) { 954 int ret; 955 956 ret = bootm_host_load_image(fit, image_types[i]); 957 if (!err && ret && ret != -ENOENT) 958 err = ret; 959 } 960 961 /* Return the first error we found */ 962 return err; 963 } 964 965 #endif /* ndef USE_HOSTCC */ 966