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 <fdt_support.h> 13 #include <lmb.h> 14 #include <malloc.h> 15 #include <asm/io.h> 16 #include <linux/lzo.h> 17 #include <lzma/LzmaTypes.h> 18 #include <lzma/LzmaDec.h> 19 #include <lzma/LzmaTools.h> 20 #if defined(CONFIG_CMD_USB) 21 #include <usb.h> 22 #endif 23 #else 24 #include "mkimage.h" 25 #endif 26 27 #include <command.h> 28 #include <bootm.h> 29 #include <image.h> 30 31 #ifndef CONFIG_SYS_BOOTM_LEN 32 /* use 8MByte as default max gunzip size */ 33 #define CONFIG_SYS_BOOTM_LEN 0x800000 34 #endif 35 36 #define IH_INITRD_ARCH IH_ARCH_DEFAULT 37 38 #ifndef USE_HOSTCC 39 40 DECLARE_GLOBAL_DATA_PTR; 41 42 static const void *boot_get_kernel(cmd_tbl_t *cmdtp, int flag, int argc, 43 char * const argv[], bootm_headers_t *images, 44 ulong *os_data, ulong *os_len); 45 46 #ifdef CONFIG_LMB 47 static void boot_start_lmb(bootm_headers_t *images) 48 { 49 ulong mem_start; 50 phys_size_t mem_size; 51 52 lmb_init(&images->lmb); 53 54 mem_start = getenv_bootm_low(); 55 mem_size = getenv_bootm_size(); 56 57 lmb_add(&images->lmb, (phys_addr_t)mem_start, mem_size); 58 59 arch_lmb_reserve(&images->lmb); 60 board_lmb_reserve(&images->lmb); 61 } 62 #else 63 #define lmb_reserve(lmb, base, size) 64 static inline void boot_start_lmb(bootm_headers_t *images) { } 65 #endif 66 67 static int bootm_start(cmd_tbl_t *cmdtp, int flag, int argc, 68 char * const argv[]) 69 { 70 memset((void *)&images, 0, sizeof(images)); 71 images.verify = getenv_yesno("verify"); 72 73 boot_start_lmb(&images); 74 75 bootstage_mark_name(BOOTSTAGE_ID_BOOTM_START, "bootm_start"); 76 images.state = BOOTM_STATE_START; 77 78 return 0; 79 } 80 81 static int bootm_find_os(cmd_tbl_t *cmdtp, int flag, int argc, 82 char * const argv[]) 83 { 84 const void *os_hdr; 85 bool ep_found = false; 86 87 /* get kernel image header, start address and length */ 88 os_hdr = boot_get_kernel(cmdtp, flag, argc, argv, 89 &images, &images.os.image_start, &images.os.image_len); 90 if (images.os.image_len == 0) { 91 puts("ERROR: can't get kernel image!\n"); 92 return 1; 93 } 94 95 /* get image parameters */ 96 switch (genimg_get_format(os_hdr)) { 97 #if defined(CONFIG_IMAGE_FORMAT_LEGACY) 98 case IMAGE_FORMAT_LEGACY: 99 images.os.type = image_get_type(os_hdr); 100 images.os.comp = image_get_comp(os_hdr); 101 images.os.os = image_get_os(os_hdr); 102 103 images.os.end = image_get_image_end(os_hdr); 104 images.os.load = image_get_load(os_hdr); 105 break; 106 #endif 107 #if defined(CONFIG_FIT) 108 case IMAGE_FORMAT_FIT: 109 if (fit_image_get_type(images.fit_hdr_os, 110 images.fit_noffset_os, 111 &images.os.type)) { 112 puts("Can't get image type!\n"); 113 bootstage_error(BOOTSTAGE_ID_FIT_TYPE); 114 return 1; 115 } 116 117 if (fit_image_get_comp(images.fit_hdr_os, 118 images.fit_noffset_os, 119 &images.os.comp)) { 120 puts("Can't get image compression!\n"); 121 bootstage_error(BOOTSTAGE_ID_FIT_COMPRESSION); 122 return 1; 123 } 124 125 if (fit_image_get_os(images.fit_hdr_os, images.fit_noffset_os, 126 &images.os.os)) { 127 puts("Can't get image OS!\n"); 128 bootstage_error(BOOTSTAGE_ID_FIT_OS); 129 return 1; 130 } 131 132 images.os.end = fit_get_end(images.fit_hdr_os); 133 134 if (fit_image_get_load(images.fit_hdr_os, images.fit_noffset_os, 135 &images.os.load)) { 136 puts("Can't get image load address!\n"); 137 bootstage_error(BOOTSTAGE_ID_FIT_LOADADDR); 138 return 1; 139 } 140 break; 141 #endif 142 #ifdef CONFIG_ANDROID_BOOT_IMAGE 143 case IMAGE_FORMAT_ANDROID: 144 images.os.type = IH_TYPE_KERNEL; 145 images.os.comp = IH_COMP_NONE; 146 images.os.os = IH_OS_LINUX; 147 images.ep = images.os.load; 148 ep_found = true; 149 150 images.os.end = android_image_get_end(os_hdr); 151 images.os.load = android_image_get_kload(os_hdr); 152 break; 153 #endif 154 default: 155 puts("ERROR: unknown image format type!\n"); 156 return 1; 157 } 158 159 /* find kernel entry point */ 160 if (images.legacy_hdr_valid) { 161 images.ep = image_get_ep(&images.legacy_hdr_os_copy); 162 #if defined(CONFIG_FIT) 163 } else if (images.fit_uname_os) { 164 int ret; 165 166 ret = fit_image_get_entry(images.fit_hdr_os, 167 images.fit_noffset_os, &images.ep); 168 if (ret) { 169 puts("Can't get entry point property!\n"); 170 return 1; 171 } 172 #endif 173 } else if (!ep_found) { 174 puts("Could not find kernel entry point!\n"); 175 return 1; 176 } 177 178 if (images.os.type == IH_TYPE_KERNEL_NOLOAD) { 179 images.os.load = images.os.image_start; 180 images.ep += images.os.load; 181 } 182 183 images.os.start = (ulong)os_hdr; 184 185 return 0; 186 } 187 188 static int bootm_find_ramdisk(int flag, int argc, char * const argv[]) 189 { 190 int ret; 191 192 /* find ramdisk */ 193 ret = boot_get_ramdisk(argc, argv, &images, IH_INITRD_ARCH, 194 &images.rd_start, &images.rd_end); 195 if (ret) { 196 puts("Ramdisk image is corrupt or invalid\n"); 197 return 1; 198 } 199 200 return 0; 201 } 202 203 #if defined(CONFIG_OF_LIBFDT) 204 static int bootm_find_fdt(int flag, int argc, char * const argv[]) 205 { 206 int ret; 207 208 /* find flattened device tree */ 209 ret = boot_get_fdt(flag, argc, argv, IH_ARCH_DEFAULT, &images, 210 &images.ft_addr, &images.ft_len); 211 if (ret) { 212 puts("Could not find a valid device tree\n"); 213 return 1; 214 } 215 216 set_working_fdt_addr(images.ft_addr); 217 218 return 0; 219 } 220 #endif 221 222 int bootm_find_ramdisk_fdt(int flag, int argc, char * const argv[]) 223 { 224 if (bootm_find_ramdisk(flag, argc, argv)) 225 return 1; 226 227 #if defined(CONFIG_OF_LIBFDT) 228 if (bootm_find_fdt(flag, argc, argv)) 229 return 1; 230 #endif 231 232 return 0; 233 } 234 235 static int bootm_find_other(cmd_tbl_t *cmdtp, int flag, int argc, 236 char * const argv[]) 237 { 238 if (((images.os.type == IH_TYPE_KERNEL) || 239 (images.os.type == IH_TYPE_KERNEL_NOLOAD) || 240 (images.os.type == IH_TYPE_MULTI)) && 241 (images.os.os == IH_OS_LINUX || 242 images.os.os == IH_OS_VXWORKS)) 243 return bootm_find_ramdisk_fdt(flag, argc, argv); 244 245 return 0; 246 } 247 248 /** 249 * decomp_image() - decompress the operating system 250 * 251 * @comp: Compression algorithm that is used (IH_COMP_...) 252 * @load: Destination load address in U-Boot memory 253 * @image_start Image start address (where we are decompressing from) 254 * @type: OS type (IH_OS_...) 255 * @load_bug: Place to decompress to 256 * @image_buf: Address to decompress from 257 * @return 0 if OK, -ve on error (BOOTM_ERR_...) 258 */ 259 static int decomp_image(int comp, ulong load, ulong image_start, int type, 260 void *load_buf, void *image_buf, ulong image_len, 261 ulong *load_end) 262 { 263 const char *type_name = genimg_get_type_name(type); 264 __attribute__((unused)) uint unc_len = CONFIG_SYS_BOOTM_LEN; 265 266 *load_end = load; 267 switch (comp) { 268 case IH_COMP_NONE: 269 if (load == image_start) { 270 printf(" XIP %s ... ", type_name); 271 } else { 272 printf(" Loading %s ... ", type_name); 273 memmove_wd(load_buf, image_buf, image_len, CHUNKSZ); 274 } 275 *load_end = load + image_len; 276 break; 277 #ifdef CONFIG_GZIP 278 case IH_COMP_GZIP: 279 printf(" Uncompressing %s ... ", type_name); 280 if (gunzip(load_buf, unc_len, image_buf, &image_len) != 0) { 281 puts("GUNZIP: uncompress, out-of-mem or overwrite error - must RESET board to recover\n"); 282 return BOOTM_ERR_RESET; 283 } 284 285 *load_end = load + image_len; 286 break; 287 #endif /* CONFIG_GZIP */ 288 #ifdef CONFIG_BZIP2 289 case IH_COMP_BZIP2: 290 printf(" Uncompressing %s ... ", type_name); 291 /* 292 * If we've got less than 4 MB of malloc() space, 293 * use slower decompression algorithm which requires 294 * at most 2300 KB of memory. 295 */ 296 int i = BZ2_bzBuffToBuffDecompress(load_buf, &unc_len, 297 image_buf, image_len, 298 CONFIG_SYS_MALLOC_LEN < (4096 * 1024), 0); 299 if (i != BZ_OK) { 300 printf("BUNZIP2: uncompress or overwrite error %d - must RESET board to recover\n", 301 i); 302 return BOOTM_ERR_RESET; 303 } 304 305 *load_end = load + unc_len; 306 break; 307 #endif /* CONFIG_BZIP2 */ 308 #ifdef CONFIG_LZMA 309 case IH_COMP_LZMA: { 310 SizeT lzma_len = unc_len; 311 int ret; 312 313 printf(" Uncompressing %s ... ", type_name); 314 315 ret = lzmaBuffToBuffDecompress(load_buf, &lzma_len, 316 image_buf, image_len); 317 unc_len = lzma_len; 318 if (ret != SZ_OK) { 319 printf("LZMA: uncompress or overwrite error %d - must RESET board to recover\n", 320 ret); 321 bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE); 322 return BOOTM_ERR_RESET; 323 } 324 *load_end = load + unc_len; 325 break; 326 } 327 #endif /* CONFIG_LZMA */ 328 #ifdef CONFIG_LZO 329 case IH_COMP_LZO: { 330 size_t size = unc_len; 331 int ret; 332 333 printf(" Uncompressing %s ... ", type_name); 334 335 ret = lzop_decompress(image_buf, image_len, load_buf, &size); 336 if (ret != LZO_E_OK) { 337 printf("LZO: uncompress or overwrite error %d - must RESET board to recover\n", 338 ret); 339 return BOOTM_ERR_RESET; 340 } 341 342 *load_end = load + size; 343 break; 344 } 345 #endif /* CONFIG_LZO */ 346 default: 347 printf("Unimplemented compression type %d\n", comp); 348 return BOOTM_ERR_UNIMPLEMENTED; 349 } 350 351 puts("OK\n"); 352 353 return 0; 354 } 355 356 static int bootm_load_os(bootm_headers_t *images, unsigned long *load_end, 357 int boot_progress) 358 { 359 image_info_t os = images->os; 360 ulong load = os.load; 361 ulong blob_start = os.start; 362 ulong blob_end = os.end; 363 ulong image_start = os.image_start; 364 ulong image_len = os.image_len; 365 bool no_overlap; 366 void *load_buf, *image_buf; 367 int err; 368 369 load_buf = map_sysmem(load, 0); 370 image_buf = map_sysmem(os.image_start, image_len); 371 err = decomp_image(os.comp, load, os.image_start, os.type, load_buf, 372 image_buf, image_len, load_end); 373 if (err) { 374 bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE); 375 return err; 376 } 377 flush_cache(load, (*load_end - load) * sizeof(ulong)); 378 379 debug(" kernel loaded at 0x%08lx, end = 0x%08lx\n", load, *load_end); 380 bootstage_mark(BOOTSTAGE_ID_KERNEL_LOADED); 381 382 no_overlap = (os.comp == IH_COMP_NONE && load == image_start); 383 384 if (!no_overlap && (load < blob_end) && (*load_end > blob_start)) { 385 debug("images.os.start = 0x%lX, images.os.end = 0x%lx\n", 386 blob_start, blob_end); 387 debug("images.os.load = 0x%lx, load_end = 0x%lx\n", load, 388 *load_end); 389 390 /* Check what type of image this is. */ 391 if (images->legacy_hdr_valid) { 392 if (image_get_type(&images->legacy_hdr_os_copy) 393 == IH_TYPE_MULTI) 394 puts("WARNING: legacy format multi component image overwritten\n"); 395 return BOOTM_ERR_OVERLAP; 396 } else { 397 puts("ERROR: new format image overwritten - must RESET the board to recover\n"); 398 bootstage_error(BOOTSTAGE_ID_OVERWRITTEN); 399 return BOOTM_ERR_RESET; 400 } 401 } 402 403 return 0; 404 } 405 406 /** 407 * bootm_disable_interrupts() - Disable interrupts in preparation for load/boot 408 * 409 * @return interrupt flag (0 if interrupts were disabled, non-zero if they were 410 * enabled) 411 */ 412 ulong bootm_disable_interrupts(void) 413 { 414 ulong iflag; 415 416 /* 417 * We have reached the point of no return: we are going to 418 * overwrite all exception vector code, so we cannot easily 419 * recover from any failures any more... 420 */ 421 iflag = disable_interrupts(); 422 #ifdef CONFIG_NETCONSOLE 423 /* Stop the ethernet stack if NetConsole could have left it up */ 424 eth_halt(); 425 eth_unregister(eth_get_dev()); 426 #endif 427 428 #if defined(CONFIG_CMD_USB) 429 /* 430 * turn off USB to prevent the host controller from writing to the 431 * SDRAM while Linux is booting. This could happen (at least for OHCI 432 * controller), because the HCCA (Host Controller Communication Area) 433 * lies within the SDRAM and the host controller writes continously to 434 * this area (as busmaster!). The HccaFrameNumber is for example 435 * updated every 1 ms within the HCCA structure in SDRAM! For more 436 * details see the OpenHCI specification. 437 */ 438 usb_stop(); 439 #endif 440 return iflag; 441 } 442 443 #if defined(CONFIG_SILENT_CONSOLE) && !defined(CONFIG_SILENT_U_BOOT_ONLY) 444 445 #define CONSOLE_ARG "console=" 446 #define CONSOLE_ARG_LEN (sizeof(CONSOLE_ARG) - 1) 447 448 static void fixup_silent_linux(void) 449 { 450 char *buf; 451 const char *env_val; 452 char *cmdline = getenv("bootargs"); 453 int want_silent; 454 455 /* 456 * Only fix cmdline when requested. The environment variable can be: 457 * 458 * no - we never fixup 459 * yes - we always fixup 460 * unset - we rely on the console silent flag 461 */ 462 want_silent = getenv_yesno("silent_linux"); 463 if (want_silent == 0) 464 return; 465 else if (want_silent == -1 && !(gd->flags & GD_FLG_SILENT)) 466 return; 467 468 debug("before silent fix-up: %s\n", cmdline); 469 if (cmdline && (cmdline[0] != '\0')) { 470 char *start = strstr(cmdline, CONSOLE_ARG); 471 472 /* Allocate space for maximum possible new command line */ 473 buf = malloc(strlen(cmdline) + 1 + CONSOLE_ARG_LEN + 1); 474 if (!buf) { 475 debug("%s: out of memory\n", __func__); 476 return; 477 } 478 479 if (start) { 480 char *end = strchr(start, ' '); 481 int num_start_bytes = start - cmdline + CONSOLE_ARG_LEN; 482 483 strncpy(buf, cmdline, num_start_bytes); 484 if (end) 485 strcpy(buf + num_start_bytes, end); 486 else 487 buf[num_start_bytes] = '\0'; 488 } else { 489 sprintf(buf, "%s %s", cmdline, CONSOLE_ARG); 490 } 491 env_val = buf; 492 } else { 493 buf = NULL; 494 env_val = CONSOLE_ARG; 495 } 496 497 setenv("bootargs", env_val); 498 debug("after silent fix-up: %s\n", env_val); 499 free(buf); 500 } 501 #endif /* CONFIG_SILENT_CONSOLE */ 502 503 /** 504 * Execute selected states of the bootm command. 505 * 506 * Note the arguments to this state must be the first argument, Any 'bootm' 507 * or sub-command arguments must have already been taken. 508 * 509 * Note that if states contains more than one flag it MUST contain 510 * BOOTM_STATE_START, since this handles and consumes the command line args. 511 * 512 * Also note that aside from boot_os_fn functions and bootm_load_os no other 513 * functions we store the return value of in 'ret' may use a negative return 514 * value, without special handling. 515 * 516 * @param cmdtp Pointer to bootm command table entry 517 * @param flag Command flags (CMD_FLAG_...) 518 * @param argc Number of subcommand arguments (0 = no arguments) 519 * @param argv Arguments 520 * @param states Mask containing states to run (BOOTM_STATE_...) 521 * @param images Image header information 522 * @param boot_progress 1 to show boot progress, 0 to not do this 523 * @return 0 if ok, something else on error. Some errors will cause this 524 * function to perform a reboot! If states contains BOOTM_STATE_OS_GO 525 * then the intent is to boot an OS, so this function will not return 526 * unless the image type is standalone. 527 */ 528 int do_bootm_states(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[], 529 int states, bootm_headers_t *images, int boot_progress) 530 { 531 boot_os_fn *boot_fn; 532 ulong iflag = 0; 533 int ret = 0, need_boot_fn; 534 535 images->state |= states; 536 537 /* 538 * Work through the states and see how far we get. We stop on 539 * any error. 540 */ 541 if (states & BOOTM_STATE_START) 542 ret = bootm_start(cmdtp, flag, argc, argv); 543 544 if (!ret && (states & BOOTM_STATE_FINDOS)) 545 ret = bootm_find_os(cmdtp, flag, argc, argv); 546 547 if (!ret && (states & BOOTM_STATE_FINDOTHER)) { 548 ret = bootm_find_other(cmdtp, flag, argc, argv); 549 argc = 0; /* consume the args */ 550 } 551 552 /* Load the OS */ 553 if (!ret && (states & BOOTM_STATE_LOADOS)) { 554 ulong load_end; 555 556 iflag = bootm_disable_interrupts(); 557 ret = bootm_load_os(images, &load_end, 0); 558 if (ret == 0) 559 lmb_reserve(&images->lmb, images->os.load, 560 (load_end - images->os.load)); 561 else if (ret && ret != BOOTM_ERR_OVERLAP) 562 goto err; 563 else if (ret == BOOTM_ERR_OVERLAP) 564 ret = 0; 565 #if defined(CONFIG_SILENT_CONSOLE) && !defined(CONFIG_SILENT_U_BOOT_ONLY) 566 if (images->os.os == IH_OS_LINUX) 567 fixup_silent_linux(); 568 #endif 569 } 570 571 /* Relocate the ramdisk */ 572 #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH 573 if (!ret && (states & BOOTM_STATE_RAMDISK)) { 574 ulong rd_len = images->rd_end - images->rd_start; 575 576 ret = boot_ramdisk_high(&images->lmb, images->rd_start, 577 rd_len, &images->initrd_start, &images->initrd_end); 578 if (!ret) { 579 setenv_hex("initrd_start", images->initrd_start); 580 setenv_hex("initrd_end", images->initrd_end); 581 } 582 } 583 #endif 584 #if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_LMB) 585 if (!ret && (states & BOOTM_STATE_FDT)) { 586 boot_fdt_add_mem_rsv_regions(&images->lmb, images->ft_addr); 587 ret = boot_relocate_fdt(&images->lmb, &images->ft_addr, 588 &images->ft_len); 589 } 590 #endif 591 592 /* From now on, we need the OS boot function */ 593 if (ret) 594 return ret; 595 boot_fn = bootm_os_get_boot_func(images->os.os); 596 need_boot_fn = states & (BOOTM_STATE_OS_CMDLINE | 597 BOOTM_STATE_OS_BD_T | BOOTM_STATE_OS_PREP | 598 BOOTM_STATE_OS_FAKE_GO | BOOTM_STATE_OS_GO); 599 if (boot_fn == NULL && need_boot_fn) { 600 if (iflag) 601 enable_interrupts(); 602 printf("ERROR: booting os '%s' (%d) is not supported\n", 603 genimg_get_os_name(images->os.os), images->os.os); 604 bootstage_error(BOOTSTAGE_ID_CHECK_BOOT_OS); 605 return 1; 606 } 607 608 /* Call various other states that are not generally used */ 609 if (!ret && (states & BOOTM_STATE_OS_CMDLINE)) 610 ret = boot_fn(BOOTM_STATE_OS_CMDLINE, argc, argv, images); 611 if (!ret && (states & BOOTM_STATE_OS_BD_T)) 612 ret = boot_fn(BOOTM_STATE_OS_BD_T, argc, argv, images); 613 if (!ret && (states & BOOTM_STATE_OS_PREP)) 614 ret = boot_fn(BOOTM_STATE_OS_PREP, argc, argv, images); 615 616 #ifdef CONFIG_TRACE 617 /* Pretend to run the OS, then run a user command */ 618 if (!ret && (states & BOOTM_STATE_OS_FAKE_GO)) { 619 char *cmd_list = getenv("fakegocmd"); 620 621 ret = boot_selected_os(argc, argv, BOOTM_STATE_OS_FAKE_GO, 622 images, boot_fn); 623 if (!ret && cmd_list) 624 ret = run_command_list(cmd_list, -1, flag); 625 } 626 #endif 627 628 /* Check for unsupported subcommand. */ 629 if (ret) { 630 puts("subcommand not supported\n"); 631 return ret; 632 } 633 634 /* Now run the OS! We hope this doesn't return */ 635 if (!ret && (states & BOOTM_STATE_OS_GO)) 636 ret = boot_selected_os(argc, argv, BOOTM_STATE_OS_GO, 637 images, boot_fn); 638 639 /* Deal with any fallout */ 640 err: 641 if (iflag) 642 enable_interrupts(); 643 644 if (ret == BOOTM_ERR_UNIMPLEMENTED) 645 bootstage_error(BOOTSTAGE_ID_DECOMP_UNIMPL); 646 else if (ret == BOOTM_ERR_RESET) 647 do_reset(cmdtp, flag, argc, argv); 648 649 return ret; 650 } 651 652 #if defined(CONFIG_IMAGE_FORMAT_LEGACY) 653 /** 654 * image_get_kernel - verify legacy format kernel image 655 * @img_addr: in RAM address of the legacy format image to be verified 656 * @verify: data CRC verification flag 657 * 658 * image_get_kernel() verifies legacy image integrity and returns pointer to 659 * legacy image header if image verification was completed successfully. 660 * 661 * returns: 662 * pointer to a legacy image header if valid image was found 663 * otherwise return NULL 664 */ 665 static image_header_t *image_get_kernel(ulong img_addr, int verify) 666 { 667 image_header_t *hdr = (image_header_t *)img_addr; 668 669 if (!image_check_magic(hdr)) { 670 puts("Bad Magic Number\n"); 671 bootstage_error(BOOTSTAGE_ID_CHECK_MAGIC); 672 return NULL; 673 } 674 bootstage_mark(BOOTSTAGE_ID_CHECK_HEADER); 675 676 if (!image_check_hcrc(hdr)) { 677 puts("Bad Header Checksum\n"); 678 bootstage_error(BOOTSTAGE_ID_CHECK_HEADER); 679 return NULL; 680 } 681 682 bootstage_mark(BOOTSTAGE_ID_CHECK_CHECKSUM); 683 image_print_contents(hdr); 684 685 if (verify) { 686 puts(" Verifying Checksum ... "); 687 if (!image_check_dcrc(hdr)) { 688 printf("Bad Data CRC\n"); 689 bootstage_error(BOOTSTAGE_ID_CHECK_CHECKSUM); 690 return NULL; 691 } 692 puts("OK\n"); 693 } 694 bootstage_mark(BOOTSTAGE_ID_CHECK_ARCH); 695 696 if (!image_check_target_arch(hdr)) { 697 printf("Unsupported Architecture 0x%x\n", image_get_arch(hdr)); 698 bootstage_error(BOOTSTAGE_ID_CHECK_ARCH); 699 return NULL; 700 } 701 return hdr; 702 } 703 #endif 704 705 /** 706 * boot_get_kernel - find kernel image 707 * @os_data: pointer to a ulong variable, will hold os data start address 708 * @os_len: pointer to a ulong variable, will hold os data length 709 * 710 * boot_get_kernel() tries to find a kernel image, verifies its integrity 711 * and locates kernel data. 712 * 713 * returns: 714 * pointer to image header if valid image was found, plus kernel start 715 * address and length, otherwise NULL 716 */ 717 static const void *boot_get_kernel(cmd_tbl_t *cmdtp, int flag, int argc, 718 char * const argv[], bootm_headers_t *images, 719 ulong *os_data, ulong *os_len) 720 { 721 #if defined(CONFIG_IMAGE_FORMAT_LEGACY) 722 image_header_t *hdr; 723 #endif 724 ulong img_addr; 725 const void *buf; 726 #if defined(CONFIG_FIT) 727 const char *fit_uname_config = NULL; 728 const char *fit_uname_kernel = NULL; 729 int os_noffset; 730 #endif 731 732 /* find out kernel image address */ 733 if (argc < 1) { 734 img_addr = load_addr; 735 debug("* kernel: default image load address = 0x%08lx\n", 736 load_addr); 737 #if defined(CONFIG_FIT) 738 } else if (fit_parse_conf(argv[0], load_addr, &img_addr, 739 &fit_uname_config)) { 740 debug("* kernel: config '%s' from image at 0x%08lx\n", 741 fit_uname_config, img_addr); 742 } else if (fit_parse_subimage(argv[0], load_addr, &img_addr, 743 &fit_uname_kernel)) { 744 debug("* kernel: subimage '%s' from image at 0x%08lx\n", 745 fit_uname_kernel, img_addr); 746 #endif 747 } else { 748 img_addr = simple_strtoul(argv[0], NULL, 16); 749 debug("* kernel: cmdline image address = 0x%08lx\n", 750 img_addr); 751 } 752 753 bootstage_mark(BOOTSTAGE_ID_CHECK_MAGIC); 754 755 /* copy from dataflash if needed */ 756 img_addr = genimg_get_image(img_addr); 757 758 /* check image type, for FIT images get FIT kernel node */ 759 *os_data = *os_len = 0; 760 buf = map_sysmem(img_addr, 0); 761 switch (genimg_get_format(buf)) { 762 #if defined(CONFIG_IMAGE_FORMAT_LEGACY) 763 case IMAGE_FORMAT_LEGACY: 764 printf("## Booting kernel from Legacy Image at %08lx ...\n", 765 img_addr); 766 hdr = image_get_kernel(img_addr, images->verify); 767 if (!hdr) 768 return NULL; 769 bootstage_mark(BOOTSTAGE_ID_CHECK_IMAGETYPE); 770 771 /* get os_data and os_len */ 772 switch (image_get_type(hdr)) { 773 case IH_TYPE_KERNEL: 774 case IH_TYPE_KERNEL_NOLOAD: 775 *os_data = image_get_data(hdr); 776 *os_len = image_get_data_size(hdr); 777 break; 778 case IH_TYPE_MULTI: 779 image_multi_getimg(hdr, 0, os_data, os_len); 780 break; 781 case IH_TYPE_STANDALONE: 782 *os_data = image_get_data(hdr); 783 *os_len = image_get_data_size(hdr); 784 break; 785 default: 786 printf("Wrong Image Type for %s command\n", 787 cmdtp->name); 788 bootstage_error(BOOTSTAGE_ID_CHECK_IMAGETYPE); 789 return NULL; 790 } 791 792 /* 793 * copy image header to allow for image overwrites during 794 * kernel decompression. 795 */ 796 memmove(&images->legacy_hdr_os_copy, hdr, 797 sizeof(image_header_t)); 798 799 /* save pointer to image header */ 800 images->legacy_hdr_os = hdr; 801 802 images->legacy_hdr_valid = 1; 803 bootstage_mark(BOOTSTAGE_ID_DECOMP_IMAGE); 804 break; 805 #endif 806 #if defined(CONFIG_FIT) 807 case IMAGE_FORMAT_FIT: 808 os_noffset = fit_image_load(images, img_addr, 809 &fit_uname_kernel, &fit_uname_config, 810 IH_ARCH_DEFAULT, IH_TYPE_KERNEL, 811 BOOTSTAGE_ID_FIT_KERNEL_START, 812 FIT_LOAD_IGNORED, os_data, os_len); 813 if (os_noffset < 0) 814 return NULL; 815 816 images->fit_hdr_os = map_sysmem(img_addr, 0); 817 images->fit_uname_os = fit_uname_kernel; 818 images->fit_uname_cfg = fit_uname_config; 819 images->fit_noffset_os = os_noffset; 820 break; 821 #endif 822 #ifdef CONFIG_ANDROID_BOOT_IMAGE 823 case IMAGE_FORMAT_ANDROID: 824 printf("## Booting Android Image at 0x%08lx ...\n", img_addr); 825 if (android_image_get_kernel(buf, images->verify, 826 os_data, os_len)) 827 return NULL; 828 break; 829 #endif 830 default: 831 printf("Wrong Image Format for %s command\n", cmdtp->name); 832 bootstage_error(BOOTSTAGE_ID_FIT_KERNEL_INFO); 833 return NULL; 834 } 835 836 debug(" kernel data at 0x%08lx, len = 0x%08lx (%ld)\n", 837 *os_data, *os_len, *os_len); 838 839 return buf; 840 } 841 842 #endif /* ndef USE_HOSTCC */ 843