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 #include <common.h> 9 #include <bootm.h> 10 #include <bzlib.h> 11 #include <image.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 21 #if defined(CONFIG_CMD_USB) 22 #include <usb.h> 23 #endif 24 25 DECLARE_GLOBAL_DATA_PTR; 26 27 #ifndef CONFIG_SYS_BOOTM_LEN 28 /* use 8MByte as default max gunzip size */ 29 #define CONFIG_SYS_BOOTM_LEN 0x800000 30 #endif 31 32 #define IH_INITRD_ARCH IH_ARCH_DEFAULT 33 34 static const void *boot_get_kernel(cmd_tbl_t *cmdtp, int flag, int argc, 35 char * const argv[], bootm_headers_t *images, 36 ulong *os_data, ulong *os_len); 37 38 #ifdef CONFIG_LMB 39 static void boot_start_lmb(bootm_headers_t *images) 40 { 41 ulong mem_start; 42 phys_size_t mem_size; 43 44 lmb_init(&images->lmb); 45 46 mem_start = getenv_bootm_low(); 47 mem_size = getenv_bootm_size(); 48 49 lmb_add(&images->lmb, (phys_addr_t)mem_start, mem_size); 50 51 arch_lmb_reserve(&images->lmb); 52 board_lmb_reserve(&images->lmb); 53 } 54 #else 55 #define lmb_reserve(lmb, base, size) 56 static inline void boot_start_lmb(bootm_headers_t *images) { } 57 #endif 58 59 static int bootm_start(cmd_tbl_t *cmdtp, int flag, int argc, 60 char * const argv[]) 61 { 62 memset((void *)&images, 0, sizeof(images)); 63 images.verify = getenv_yesno("verify"); 64 65 boot_start_lmb(&images); 66 67 bootstage_mark_name(BOOTSTAGE_ID_BOOTM_START, "bootm_start"); 68 images.state = BOOTM_STATE_START; 69 70 return 0; 71 } 72 73 static int bootm_find_os(cmd_tbl_t *cmdtp, int flag, int argc, 74 char * const argv[]) 75 { 76 const void *os_hdr; 77 bool ep_found = false; 78 79 /* get kernel image header, start address and length */ 80 os_hdr = boot_get_kernel(cmdtp, flag, argc, argv, 81 &images, &images.os.image_start, &images.os.image_len); 82 if (images.os.image_len == 0) { 83 puts("ERROR: can't get kernel image!\n"); 84 return 1; 85 } 86 87 /* get image parameters */ 88 switch (genimg_get_format(os_hdr)) { 89 #if defined(CONFIG_IMAGE_FORMAT_LEGACY) 90 case IMAGE_FORMAT_LEGACY: 91 images.os.type = image_get_type(os_hdr); 92 images.os.comp = image_get_comp(os_hdr); 93 images.os.os = image_get_os(os_hdr); 94 95 images.os.end = image_get_image_end(os_hdr); 96 images.os.load = image_get_load(os_hdr); 97 break; 98 #endif 99 #if defined(CONFIG_FIT) 100 case IMAGE_FORMAT_FIT: 101 if (fit_image_get_type(images.fit_hdr_os, 102 images.fit_noffset_os, 103 &images.os.type)) { 104 puts("Can't get image type!\n"); 105 bootstage_error(BOOTSTAGE_ID_FIT_TYPE); 106 return 1; 107 } 108 109 if (fit_image_get_comp(images.fit_hdr_os, 110 images.fit_noffset_os, 111 &images.os.comp)) { 112 puts("Can't get image compression!\n"); 113 bootstage_error(BOOTSTAGE_ID_FIT_COMPRESSION); 114 return 1; 115 } 116 117 if (fit_image_get_os(images.fit_hdr_os, images.fit_noffset_os, 118 &images.os.os)) { 119 puts("Can't get image OS!\n"); 120 bootstage_error(BOOTSTAGE_ID_FIT_OS); 121 return 1; 122 } 123 124 images.os.end = fit_get_end(images.fit_hdr_os); 125 126 if (fit_image_get_load(images.fit_hdr_os, images.fit_noffset_os, 127 &images.os.load)) { 128 puts("Can't get image load address!\n"); 129 bootstage_error(BOOTSTAGE_ID_FIT_LOADADDR); 130 return 1; 131 } 132 break; 133 #endif 134 #ifdef CONFIG_ANDROID_BOOT_IMAGE 135 case IMAGE_FORMAT_ANDROID: 136 images.os.type = IH_TYPE_KERNEL; 137 images.os.comp = IH_COMP_NONE; 138 images.os.os = IH_OS_LINUX; 139 images.ep = images.os.load; 140 ep_found = true; 141 142 images.os.end = android_image_get_end(os_hdr); 143 images.os.load = android_image_get_kload(os_hdr); 144 break; 145 #endif 146 default: 147 puts("ERROR: unknown image format type!\n"); 148 return 1; 149 } 150 151 /* find kernel entry point */ 152 if (images.legacy_hdr_valid) { 153 images.ep = image_get_ep(&images.legacy_hdr_os_copy); 154 #if defined(CONFIG_FIT) 155 } else if (images.fit_uname_os) { 156 int ret; 157 158 ret = fit_image_get_entry(images.fit_hdr_os, 159 images.fit_noffset_os, &images.ep); 160 if (ret) { 161 puts("Can't get entry point property!\n"); 162 return 1; 163 } 164 #endif 165 } else if (!ep_found) { 166 puts("Could not find kernel entry point!\n"); 167 return 1; 168 } 169 170 if (images.os.type == IH_TYPE_KERNEL_NOLOAD) { 171 images.os.load = images.os.image_start; 172 images.ep += images.os.load; 173 } 174 175 images.os.start = (ulong)os_hdr; 176 177 return 0; 178 } 179 180 static int bootm_find_ramdisk(int flag, int argc, char * const argv[]) 181 { 182 int ret; 183 184 /* find ramdisk */ 185 ret = boot_get_ramdisk(argc, argv, &images, IH_INITRD_ARCH, 186 &images.rd_start, &images.rd_end); 187 if (ret) { 188 puts("Ramdisk image is corrupt or invalid\n"); 189 return 1; 190 } 191 192 return 0; 193 } 194 195 #if defined(CONFIG_OF_LIBFDT) 196 static int bootm_find_fdt(int flag, int argc, char * const argv[]) 197 { 198 int ret; 199 200 /* find flattened device tree */ 201 ret = boot_get_fdt(flag, argc, argv, IH_ARCH_DEFAULT, &images, 202 &images.ft_addr, &images.ft_len); 203 if (ret) { 204 puts("Could not find a valid device tree\n"); 205 return 1; 206 } 207 208 set_working_fdt_addr(images.ft_addr); 209 210 return 0; 211 } 212 #endif 213 214 int bootm_find_ramdisk_fdt(int flag, int argc, char * const argv[]) 215 { 216 if (bootm_find_ramdisk(flag, argc, argv)) 217 return 1; 218 219 #if defined(CONFIG_OF_LIBFDT) 220 if (bootm_find_fdt(flag, argc, argv)) 221 return 1; 222 #endif 223 224 return 0; 225 } 226 227 static int bootm_find_other(cmd_tbl_t *cmdtp, int flag, int argc, 228 char * const argv[]) 229 { 230 if (((images.os.type == IH_TYPE_KERNEL) || 231 (images.os.type == IH_TYPE_KERNEL_NOLOAD) || 232 (images.os.type == IH_TYPE_MULTI)) && 233 (images.os.os == IH_OS_LINUX || 234 images.os.os == IH_OS_VXWORKS)) 235 return bootm_find_ramdisk_fdt(flag, argc, argv); 236 237 return 0; 238 } 239 240 static int bootm_load_os(bootm_headers_t *images, unsigned long *load_end, 241 int boot_progress) 242 { 243 image_info_t os = images->os; 244 uint8_t comp = os.comp; 245 ulong load = os.load; 246 ulong blob_start = os.start; 247 ulong blob_end = os.end; 248 ulong image_start = os.image_start; 249 ulong image_len = os.image_len; 250 __maybe_unused uint unc_len = CONFIG_SYS_BOOTM_LEN; 251 int no_overlap = 0; 252 void *load_buf, *image_buf; 253 #if defined(CONFIG_LZMA) || defined(CONFIG_LZO) 254 int ret; 255 #endif /* defined(CONFIG_LZMA) || defined(CONFIG_LZO) */ 256 257 const char *type_name = genimg_get_type_name(os.type); 258 259 load_buf = map_sysmem(load, unc_len); 260 image_buf = map_sysmem(image_start, image_len); 261 switch (comp) { 262 case IH_COMP_NONE: 263 if (load == image_start) { 264 printf(" XIP %s ... ", type_name); 265 no_overlap = 1; 266 } else { 267 printf(" Loading %s ... ", type_name); 268 memmove_wd(load_buf, image_buf, image_len, CHUNKSZ); 269 } 270 *load_end = load + image_len; 271 break; 272 #ifdef CONFIG_GZIP 273 case IH_COMP_GZIP: 274 printf(" Uncompressing %s ... ", type_name); 275 if (gunzip(load_buf, unc_len, image_buf, &image_len) != 0) { 276 puts("GUNZIP: uncompress, out-of-mem or overwrite error - must RESET board to recover\n"); 277 if (boot_progress) 278 bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE); 279 return BOOTM_ERR_RESET; 280 } 281 282 *load_end = load + image_len; 283 break; 284 #endif /* CONFIG_GZIP */ 285 #ifdef CONFIG_BZIP2 286 case IH_COMP_BZIP2: 287 printf(" Uncompressing %s ... ", type_name); 288 /* 289 * If we've got less than 4 MB of malloc() space, 290 * use slower decompression algorithm which requires 291 * at most 2300 KB of memory. 292 */ 293 int i = BZ2_bzBuffToBuffDecompress(load_buf, &unc_len, 294 image_buf, image_len, 295 CONFIG_SYS_MALLOC_LEN < (4096 * 1024), 0); 296 if (i != BZ_OK) { 297 printf("BUNZIP2: uncompress or overwrite error %d - must RESET board to recover\n", 298 i); 299 if (boot_progress) 300 bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE); 301 return BOOTM_ERR_RESET; 302 } 303 304 *load_end = load + unc_len; 305 break; 306 #endif /* CONFIG_BZIP2 */ 307 #ifdef CONFIG_LZMA 308 case IH_COMP_LZMA: { 309 SizeT lzma_len = unc_len; 310 printf(" Uncompressing %s ... ", type_name); 311 312 ret = lzmaBuffToBuffDecompress(load_buf, &lzma_len, 313 image_buf, image_len); 314 unc_len = lzma_len; 315 if (ret != SZ_OK) { 316 printf("LZMA: uncompress or overwrite error %d - must RESET board to recover\n", 317 ret); 318 bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE); 319 return BOOTM_ERR_RESET; 320 } 321 *load_end = load + unc_len; 322 break; 323 } 324 #endif /* CONFIG_LZMA */ 325 #ifdef CONFIG_LZO 326 case IH_COMP_LZO: { 327 size_t size = unc_len; 328 329 printf(" Uncompressing %s ... ", type_name); 330 331 ret = lzop_decompress(image_buf, image_len, load_buf, &size); 332 if (ret != LZO_E_OK) { 333 printf("LZO: uncompress or overwrite error %d - must RESET board to recover\n", 334 ret); 335 if (boot_progress) 336 bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE); 337 return BOOTM_ERR_RESET; 338 } 339 340 *load_end = load + size; 341 break; 342 } 343 #endif /* CONFIG_LZO */ 344 default: 345 printf("Unimplemented compression type %d\n", comp); 346 return BOOTM_ERR_UNIMPLEMENTED; 347 } 348 349 flush_cache(load, (*load_end - load) * sizeof(ulong)); 350 351 puts("OK\n"); 352 debug(" kernel loaded at 0x%08lx, end = 0x%08lx\n", load, *load_end); 353 bootstage_mark(BOOTSTAGE_ID_KERNEL_LOADED); 354 355 if (!no_overlap && (load < blob_end) && (*load_end > blob_start)) { 356 debug("images.os.start = 0x%lX, images.os.end = 0x%lx\n", 357 blob_start, blob_end); 358 debug("images.os.load = 0x%lx, load_end = 0x%lx\n", load, 359 *load_end); 360 361 /* Check what type of image this is. */ 362 if (images->legacy_hdr_valid) { 363 if (image_get_type(&images->legacy_hdr_os_copy) 364 == IH_TYPE_MULTI) 365 puts("WARNING: legacy format multi component image overwritten\n"); 366 return BOOTM_ERR_OVERLAP; 367 } else { 368 puts("ERROR: new format image overwritten - must RESET the board to recover\n"); 369 bootstage_error(BOOTSTAGE_ID_OVERWRITTEN); 370 return BOOTM_ERR_RESET; 371 } 372 } 373 374 return 0; 375 } 376 377 /** 378 * bootm_disable_interrupts() - Disable interrupts in preparation for load/boot 379 * 380 * @return interrupt flag (0 if interrupts were disabled, non-zero if they were 381 * enabled) 382 */ 383 ulong bootm_disable_interrupts(void) 384 { 385 ulong iflag; 386 387 /* 388 * We have reached the point of no return: we are going to 389 * overwrite all exception vector code, so we cannot easily 390 * recover from any failures any more... 391 */ 392 iflag = disable_interrupts(); 393 #ifdef CONFIG_NETCONSOLE 394 /* Stop the ethernet stack if NetConsole could have left it up */ 395 eth_halt(); 396 eth_unregister(eth_get_dev()); 397 #endif 398 399 #if defined(CONFIG_CMD_USB) 400 /* 401 * turn off USB to prevent the host controller from writing to the 402 * SDRAM while Linux is booting. This could happen (at least for OHCI 403 * controller), because the HCCA (Host Controller Communication Area) 404 * lies within the SDRAM and the host controller writes continously to 405 * this area (as busmaster!). The HccaFrameNumber is for example 406 * updated every 1 ms within the HCCA structure in SDRAM! For more 407 * details see the OpenHCI specification. 408 */ 409 usb_stop(); 410 #endif 411 return iflag; 412 } 413 414 #if defined(CONFIG_SILENT_CONSOLE) && !defined(CONFIG_SILENT_U_BOOT_ONLY) 415 416 #define CONSOLE_ARG "console=" 417 #define CONSOLE_ARG_LEN (sizeof(CONSOLE_ARG) - 1) 418 419 static void fixup_silent_linux(void) 420 { 421 char *buf; 422 const char *env_val; 423 char *cmdline = getenv("bootargs"); 424 int want_silent; 425 426 /* 427 * Only fix cmdline when requested. The environment variable can be: 428 * 429 * no - we never fixup 430 * yes - we always fixup 431 * unset - we rely on the console silent flag 432 */ 433 want_silent = getenv_yesno("silent_linux"); 434 if (want_silent == 0) 435 return; 436 else if (want_silent == -1 && !(gd->flags & GD_FLG_SILENT)) 437 return; 438 439 debug("before silent fix-up: %s\n", cmdline); 440 if (cmdline && (cmdline[0] != '\0')) { 441 char *start = strstr(cmdline, CONSOLE_ARG); 442 443 /* Allocate space for maximum possible new command line */ 444 buf = malloc(strlen(cmdline) + 1 + CONSOLE_ARG_LEN + 1); 445 if (!buf) { 446 debug("%s: out of memory\n", __func__); 447 return; 448 } 449 450 if (start) { 451 char *end = strchr(start, ' '); 452 int num_start_bytes = start - cmdline + CONSOLE_ARG_LEN; 453 454 strncpy(buf, cmdline, num_start_bytes); 455 if (end) 456 strcpy(buf + num_start_bytes, end); 457 else 458 buf[num_start_bytes] = '\0'; 459 } else { 460 sprintf(buf, "%s %s", cmdline, CONSOLE_ARG); 461 } 462 env_val = buf; 463 } else { 464 buf = NULL; 465 env_val = CONSOLE_ARG; 466 } 467 468 setenv("bootargs", env_val); 469 debug("after silent fix-up: %s\n", env_val); 470 free(buf); 471 } 472 #endif /* CONFIG_SILENT_CONSOLE */ 473 474 /** 475 * Execute selected states of the bootm command. 476 * 477 * Note the arguments to this state must be the first argument, Any 'bootm' 478 * or sub-command arguments must have already been taken. 479 * 480 * Note that if states contains more than one flag it MUST contain 481 * BOOTM_STATE_START, since this handles and consumes the command line args. 482 * 483 * Also note that aside from boot_os_fn functions and bootm_load_os no other 484 * functions we store the return value of in 'ret' may use a negative return 485 * value, without special handling. 486 * 487 * @param cmdtp Pointer to bootm command table entry 488 * @param flag Command flags (CMD_FLAG_...) 489 * @param argc Number of subcommand arguments (0 = no arguments) 490 * @param argv Arguments 491 * @param states Mask containing states to run (BOOTM_STATE_...) 492 * @param images Image header information 493 * @param boot_progress 1 to show boot progress, 0 to not do this 494 * @return 0 if ok, something else on error. Some errors will cause this 495 * function to perform a reboot! If states contains BOOTM_STATE_OS_GO 496 * then the intent is to boot an OS, so this function will not return 497 * unless the image type is standalone. 498 */ 499 int do_bootm_states(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[], 500 int states, bootm_headers_t *images, int boot_progress) 501 { 502 boot_os_fn *boot_fn; 503 ulong iflag = 0; 504 int ret = 0, need_boot_fn; 505 506 images->state |= states; 507 508 /* 509 * Work through the states and see how far we get. We stop on 510 * any error. 511 */ 512 if (states & BOOTM_STATE_START) 513 ret = bootm_start(cmdtp, flag, argc, argv); 514 515 if (!ret && (states & BOOTM_STATE_FINDOS)) 516 ret = bootm_find_os(cmdtp, flag, argc, argv); 517 518 if (!ret && (states & BOOTM_STATE_FINDOTHER)) { 519 ret = bootm_find_other(cmdtp, flag, argc, argv); 520 argc = 0; /* consume the args */ 521 } 522 523 /* Load the OS */ 524 if (!ret && (states & BOOTM_STATE_LOADOS)) { 525 ulong load_end; 526 527 iflag = bootm_disable_interrupts(); 528 ret = bootm_load_os(images, &load_end, 0); 529 if (ret == 0) 530 lmb_reserve(&images->lmb, images->os.load, 531 (load_end - images->os.load)); 532 else if (ret && ret != BOOTM_ERR_OVERLAP) 533 goto err; 534 else if (ret == BOOTM_ERR_OVERLAP) 535 ret = 0; 536 #if defined(CONFIG_SILENT_CONSOLE) && !defined(CONFIG_SILENT_U_BOOT_ONLY) 537 if (images->os.os == IH_OS_LINUX) 538 fixup_silent_linux(); 539 #endif 540 } 541 542 /* Relocate the ramdisk */ 543 #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH 544 if (!ret && (states & BOOTM_STATE_RAMDISK)) { 545 ulong rd_len = images->rd_end - images->rd_start; 546 547 ret = boot_ramdisk_high(&images->lmb, images->rd_start, 548 rd_len, &images->initrd_start, &images->initrd_end); 549 if (!ret) { 550 setenv_hex("initrd_start", images->initrd_start); 551 setenv_hex("initrd_end", images->initrd_end); 552 } 553 } 554 #endif 555 #if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_LMB) 556 if (!ret && (states & BOOTM_STATE_FDT)) { 557 boot_fdt_add_mem_rsv_regions(&images->lmb, images->ft_addr); 558 ret = boot_relocate_fdt(&images->lmb, &images->ft_addr, 559 &images->ft_len); 560 } 561 #endif 562 563 /* From now on, we need the OS boot function */ 564 if (ret) 565 return ret; 566 boot_fn = bootm_os_get_boot_func(images->os.os); 567 need_boot_fn = states & (BOOTM_STATE_OS_CMDLINE | 568 BOOTM_STATE_OS_BD_T | BOOTM_STATE_OS_PREP | 569 BOOTM_STATE_OS_FAKE_GO | BOOTM_STATE_OS_GO); 570 if (boot_fn == NULL && need_boot_fn) { 571 if (iflag) 572 enable_interrupts(); 573 printf("ERROR: booting os '%s' (%d) is not supported\n", 574 genimg_get_os_name(images->os.os), images->os.os); 575 bootstage_error(BOOTSTAGE_ID_CHECK_BOOT_OS); 576 return 1; 577 } 578 579 /* Call various other states that are not generally used */ 580 if (!ret && (states & BOOTM_STATE_OS_CMDLINE)) 581 ret = boot_fn(BOOTM_STATE_OS_CMDLINE, argc, argv, images); 582 if (!ret && (states & BOOTM_STATE_OS_BD_T)) 583 ret = boot_fn(BOOTM_STATE_OS_BD_T, argc, argv, images); 584 if (!ret && (states & BOOTM_STATE_OS_PREP)) 585 ret = boot_fn(BOOTM_STATE_OS_PREP, argc, argv, images); 586 587 #ifdef CONFIG_TRACE 588 /* Pretend to run the OS, then run a user command */ 589 if (!ret && (states & BOOTM_STATE_OS_FAKE_GO)) { 590 char *cmd_list = getenv("fakegocmd"); 591 592 ret = boot_selected_os(argc, argv, BOOTM_STATE_OS_FAKE_GO, 593 images, boot_fn); 594 if (!ret && cmd_list) 595 ret = run_command_list(cmd_list, -1, flag); 596 } 597 #endif 598 599 /* Check for unsupported subcommand. */ 600 if (ret) { 601 puts("subcommand not supported\n"); 602 return ret; 603 } 604 605 /* Now run the OS! We hope this doesn't return */ 606 if (!ret && (states & BOOTM_STATE_OS_GO)) 607 ret = boot_selected_os(argc, argv, BOOTM_STATE_OS_GO, 608 images, boot_fn); 609 610 /* Deal with any fallout */ 611 err: 612 if (iflag) 613 enable_interrupts(); 614 615 if (ret == BOOTM_ERR_UNIMPLEMENTED) 616 bootstage_error(BOOTSTAGE_ID_DECOMP_UNIMPL); 617 else if (ret == BOOTM_ERR_RESET) 618 do_reset(cmdtp, flag, argc, argv); 619 620 return ret; 621 } 622 623 #if defined(CONFIG_IMAGE_FORMAT_LEGACY) 624 /** 625 * image_get_kernel - verify legacy format kernel image 626 * @img_addr: in RAM address of the legacy format image to be verified 627 * @verify: data CRC verification flag 628 * 629 * image_get_kernel() verifies legacy image integrity and returns pointer to 630 * legacy image header if image verification was completed successfully. 631 * 632 * returns: 633 * pointer to a legacy image header if valid image was found 634 * otherwise return NULL 635 */ 636 static image_header_t *image_get_kernel(ulong img_addr, int verify) 637 { 638 image_header_t *hdr = (image_header_t *)img_addr; 639 640 if (!image_check_magic(hdr)) { 641 puts("Bad Magic Number\n"); 642 bootstage_error(BOOTSTAGE_ID_CHECK_MAGIC); 643 return NULL; 644 } 645 bootstage_mark(BOOTSTAGE_ID_CHECK_HEADER); 646 647 if (!image_check_hcrc(hdr)) { 648 puts("Bad Header Checksum\n"); 649 bootstage_error(BOOTSTAGE_ID_CHECK_HEADER); 650 return NULL; 651 } 652 653 bootstage_mark(BOOTSTAGE_ID_CHECK_CHECKSUM); 654 image_print_contents(hdr); 655 656 if (verify) { 657 puts(" Verifying Checksum ... "); 658 if (!image_check_dcrc(hdr)) { 659 printf("Bad Data CRC\n"); 660 bootstage_error(BOOTSTAGE_ID_CHECK_CHECKSUM); 661 return NULL; 662 } 663 puts("OK\n"); 664 } 665 bootstage_mark(BOOTSTAGE_ID_CHECK_ARCH); 666 667 if (!image_check_target_arch(hdr)) { 668 printf("Unsupported Architecture 0x%x\n", image_get_arch(hdr)); 669 bootstage_error(BOOTSTAGE_ID_CHECK_ARCH); 670 return NULL; 671 } 672 return hdr; 673 } 674 #endif 675 676 /** 677 * boot_get_kernel - find kernel image 678 * @os_data: pointer to a ulong variable, will hold os data start address 679 * @os_len: pointer to a ulong variable, will hold os data length 680 * 681 * boot_get_kernel() tries to find a kernel image, verifies its integrity 682 * and locates kernel data. 683 * 684 * returns: 685 * pointer to image header if valid image was found, plus kernel start 686 * address and length, otherwise NULL 687 */ 688 static const void *boot_get_kernel(cmd_tbl_t *cmdtp, int flag, int argc, 689 char * const argv[], bootm_headers_t *images, 690 ulong *os_data, ulong *os_len) 691 { 692 #if defined(CONFIG_IMAGE_FORMAT_LEGACY) 693 image_header_t *hdr; 694 #endif 695 ulong img_addr; 696 const void *buf; 697 #if defined(CONFIG_FIT) 698 const char *fit_uname_config = NULL; 699 const char *fit_uname_kernel = NULL; 700 int os_noffset; 701 #endif 702 703 /* find out kernel image address */ 704 if (argc < 1) { 705 img_addr = load_addr; 706 debug("* kernel: default image load address = 0x%08lx\n", 707 load_addr); 708 #if defined(CONFIG_FIT) 709 } else if (fit_parse_conf(argv[0], load_addr, &img_addr, 710 &fit_uname_config)) { 711 debug("* kernel: config '%s' from image at 0x%08lx\n", 712 fit_uname_config, img_addr); 713 } else if (fit_parse_subimage(argv[0], load_addr, &img_addr, 714 &fit_uname_kernel)) { 715 debug("* kernel: subimage '%s' from image at 0x%08lx\n", 716 fit_uname_kernel, img_addr); 717 #endif 718 } else { 719 img_addr = simple_strtoul(argv[0], NULL, 16); 720 debug("* kernel: cmdline image address = 0x%08lx\n", 721 img_addr); 722 } 723 724 bootstage_mark(BOOTSTAGE_ID_CHECK_MAGIC); 725 726 /* copy from dataflash if needed */ 727 img_addr = genimg_get_image(img_addr); 728 729 /* check image type, for FIT images get FIT kernel node */ 730 *os_data = *os_len = 0; 731 buf = map_sysmem(img_addr, 0); 732 switch (genimg_get_format(buf)) { 733 #if defined(CONFIG_IMAGE_FORMAT_LEGACY) 734 case IMAGE_FORMAT_LEGACY: 735 printf("## Booting kernel from Legacy Image at %08lx ...\n", 736 img_addr); 737 hdr = image_get_kernel(img_addr, images->verify); 738 if (!hdr) 739 return NULL; 740 bootstage_mark(BOOTSTAGE_ID_CHECK_IMAGETYPE); 741 742 /* get os_data and os_len */ 743 switch (image_get_type(hdr)) { 744 case IH_TYPE_KERNEL: 745 case IH_TYPE_KERNEL_NOLOAD: 746 *os_data = image_get_data(hdr); 747 *os_len = image_get_data_size(hdr); 748 break; 749 case IH_TYPE_MULTI: 750 image_multi_getimg(hdr, 0, os_data, os_len); 751 break; 752 case IH_TYPE_STANDALONE: 753 *os_data = image_get_data(hdr); 754 *os_len = image_get_data_size(hdr); 755 break; 756 default: 757 printf("Wrong Image Type for %s command\n", 758 cmdtp->name); 759 bootstage_error(BOOTSTAGE_ID_CHECK_IMAGETYPE); 760 return NULL; 761 } 762 763 /* 764 * copy image header to allow for image overwrites during 765 * kernel decompression. 766 */ 767 memmove(&images->legacy_hdr_os_copy, hdr, 768 sizeof(image_header_t)); 769 770 /* save pointer to image header */ 771 images->legacy_hdr_os = hdr; 772 773 images->legacy_hdr_valid = 1; 774 bootstage_mark(BOOTSTAGE_ID_DECOMP_IMAGE); 775 break; 776 #endif 777 #if defined(CONFIG_FIT) 778 case IMAGE_FORMAT_FIT: 779 os_noffset = fit_image_load(images, img_addr, 780 &fit_uname_kernel, &fit_uname_config, 781 IH_ARCH_DEFAULT, IH_TYPE_KERNEL, 782 BOOTSTAGE_ID_FIT_KERNEL_START, 783 FIT_LOAD_IGNORED, os_data, os_len); 784 if (os_noffset < 0) 785 return NULL; 786 787 images->fit_hdr_os = map_sysmem(img_addr, 0); 788 images->fit_uname_os = fit_uname_kernel; 789 images->fit_uname_cfg = fit_uname_config; 790 images->fit_noffset_os = os_noffset; 791 break; 792 #endif 793 #ifdef CONFIG_ANDROID_BOOT_IMAGE 794 case IMAGE_FORMAT_ANDROID: 795 printf("## Booting Android Image at 0x%08lx ...\n", img_addr); 796 if (android_image_get_kernel(buf, images->verify, 797 os_data, os_len)) 798 return NULL; 799 break; 800 #endif 801 default: 802 printf("Wrong Image Format for %s command\n", cmdtp->name); 803 bootstage_error(BOOTSTAGE_ID_FIT_KERNEL_INFO); 804 return NULL; 805 } 806 807 debug(" kernel data at 0x%08lx, len = 0x%08lx (%ld)\n", 808 *os_data, *os_len, *os_len); 809 810 return buf; 811 } 812