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 <asm/io.h> 17 #include <linux/lzo.h> 18 #include <lzma/LzmaTypes.h> 19 #include <lzma/LzmaDec.h> 20 #include <lzma/LzmaTools.h> 21 #if defined(CONFIG_CMD_USB) 22 #include <usb.h> 23 #endif 24 #else 25 #include "mkimage.h" 26 #endif 27 28 #include <command.h> 29 #include <bootm.h> 30 #include <image.h> 31 32 #ifndef CONFIG_SYS_BOOTM_LEN 33 /* use 8MByte as default max gunzip size */ 34 #define CONFIG_SYS_BOOTM_LEN 0x800000 35 #endif 36 37 #define IH_INITRD_ARCH IH_ARCH_DEFAULT 38 39 #ifndef USE_HOSTCC 40 41 DECLARE_GLOBAL_DATA_PTR; 42 43 static const void *boot_get_kernel(cmd_tbl_t *cmdtp, int flag, int argc, 44 char * const argv[], bootm_headers_t *images, 45 ulong *os_data, ulong *os_len); 46 47 #ifdef CONFIG_LMB 48 static void boot_start_lmb(bootm_headers_t *images) 49 { 50 ulong mem_start; 51 phys_size_t mem_size; 52 53 lmb_init(&images->lmb); 54 55 mem_start = getenv_bootm_low(); 56 mem_size = getenv_bootm_size(); 57 58 lmb_add(&images->lmb, (phys_addr_t)mem_start, mem_size); 59 60 arch_lmb_reserve(&images->lmb); 61 board_lmb_reserve(&images->lmb); 62 } 63 #else 64 #define lmb_reserve(lmb, base, size) 65 static inline void boot_start_lmb(bootm_headers_t *images) { } 66 #endif 67 68 static int bootm_start(cmd_tbl_t *cmdtp, int flag, int argc, 69 char * const argv[]) 70 { 71 memset((void *)&images, 0, sizeof(images)); 72 images.verify = getenv_yesno("verify"); 73 74 boot_start_lmb(&images); 75 76 bootstage_mark_name(BOOTSTAGE_ID_BOOTM_START, "bootm_start"); 77 images.state = BOOTM_STATE_START; 78 79 return 0; 80 } 81 82 static int bootm_find_os(cmd_tbl_t *cmdtp, int flag, int argc, 83 char * const argv[]) 84 { 85 const void *os_hdr; 86 bool ep_found = false; 87 int ret; 88 89 /* get kernel image header, start address and length */ 90 os_hdr = boot_get_kernel(cmdtp, flag, argc, argv, 91 &images, &images.os.image_start, &images.os.image_len); 92 if (images.os.image_len == 0) { 93 puts("ERROR: can't get kernel image!\n"); 94 return 1; 95 } 96 97 /* get image parameters */ 98 switch (genimg_get_format(os_hdr)) { 99 #if defined(CONFIG_IMAGE_FORMAT_LEGACY) 100 case IMAGE_FORMAT_LEGACY: 101 images.os.type = image_get_type(os_hdr); 102 images.os.comp = image_get_comp(os_hdr); 103 images.os.os = image_get_os(os_hdr); 104 105 images.os.end = image_get_image_end(os_hdr); 106 images.os.load = image_get_load(os_hdr); 107 images.os.arch = image_get_arch(os_hdr); 108 break; 109 #endif 110 #if defined(CONFIG_FIT) 111 case IMAGE_FORMAT_FIT: 112 if (fit_image_get_type(images.fit_hdr_os, 113 images.fit_noffset_os, 114 &images.os.type)) { 115 puts("Can't get image type!\n"); 116 bootstage_error(BOOTSTAGE_ID_FIT_TYPE); 117 return 1; 118 } 119 120 if (fit_image_get_comp(images.fit_hdr_os, 121 images.fit_noffset_os, 122 &images.os.comp)) { 123 puts("Can't get image compression!\n"); 124 bootstage_error(BOOTSTAGE_ID_FIT_COMPRESSION); 125 return 1; 126 } 127 128 if (fit_image_get_os(images.fit_hdr_os, images.fit_noffset_os, 129 &images.os.os)) { 130 puts("Can't get image OS!\n"); 131 bootstage_error(BOOTSTAGE_ID_FIT_OS); 132 return 1; 133 } 134 135 if (fit_image_get_arch(images.fit_hdr_os, 136 images.fit_noffset_os, 137 &images.os.arch)) { 138 puts("Can't get image ARCH!\n"); 139 return 1; 140 } 141 142 images.os.end = fit_get_end(images.fit_hdr_os); 143 144 if (fit_image_get_load(images.fit_hdr_os, images.fit_noffset_os, 145 &images.os.load)) { 146 puts("Can't get image load address!\n"); 147 bootstage_error(BOOTSTAGE_ID_FIT_LOADADDR); 148 return 1; 149 } 150 break; 151 #endif 152 #ifdef CONFIG_ANDROID_BOOT_IMAGE 153 case IMAGE_FORMAT_ANDROID: 154 images.os.type = IH_TYPE_KERNEL; 155 images.os.comp = IH_COMP_NONE; 156 images.os.os = IH_OS_LINUX; 157 158 images.os.end = android_image_get_end(os_hdr); 159 images.os.load = android_image_get_kload(os_hdr); 160 images.ep = images.os.load; 161 ep_found = true; 162 break; 163 #endif 164 default: 165 puts("ERROR: unknown image format type!\n"); 166 return 1; 167 } 168 169 /* If we have a valid setup.bin, we will use that for entry (x86) */ 170 if (images.os.arch == IH_ARCH_I386 || 171 images.os.arch == IH_ARCH_X86_64) { 172 ulong len; 173 174 ret = boot_get_setup(&images, IH_ARCH_I386, &images.ep, &len); 175 if (ret < 0 && ret != -ENOENT) { 176 puts("Could not find a valid setup.bin for x86\n"); 177 return 1; 178 } 179 /* Kernel entry point is the setup.bin */ 180 } else if (images.legacy_hdr_valid) { 181 images.ep = image_get_ep(&images.legacy_hdr_os_copy); 182 #if defined(CONFIG_FIT) 183 } else if (images.fit_uname_os) { 184 int ret; 185 186 ret = fit_image_get_entry(images.fit_hdr_os, 187 images.fit_noffset_os, &images.ep); 188 if (ret) { 189 puts("Can't get entry point property!\n"); 190 return 1; 191 } 192 #endif 193 } else if (!ep_found) { 194 puts("Could not find kernel entry point!\n"); 195 return 1; 196 } 197 198 if (images.os.type == IH_TYPE_KERNEL_NOLOAD) { 199 images.os.load = images.os.image_start; 200 images.ep += images.os.load; 201 } 202 203 images.os.start = (ulong)os_hdr; 204 205 return 0; 206 } 207 208 static int bootm_find_ramdisk(int flag, int argc, char * const argv[]) 209 { 210 int ret; 211 212 /* find ramdisk */ 213 ret = boot_get_ramdisk(argc, argv, &images, IH_INITRD_ARCH, 214 &images.rd_start, &images.rd_end); 215 if (ret) { 216 puts("Ramdisk image is corrupt or invalid\n"); 217 return 1; 218 } 219 220 return 0; 221 } 222 223 #if defined(CONFIG_OF_LIBFDT) 224 static int bootm_find_fdt(int flag, int argc, char * const argv[]) 225 { 226 int ret; 227 228 /* find flattened device tree */ 229 ret = boot_get_fdt(flag, argc, argv, IH_ARCH_DEFAULT, &images, 230 &images.ft_addr, &images.ft_len); 231 if (ret) { 232 puts("Could not find a valid device tree\n"); 233 return 1; 234 } 235 236 set_working_fdt_addr(images.ft_addr); 237 238 return 0; 239 } 240 #endif 241 242 int bootm_find_ramdisk_fdt(int flag, int argc, char * const argv[]) 243 { 244 if (bootm_find_ramdisk(flag, argc, argv)) 245 return 1; 246 247 #if defined(CONFIG_OF_LIBFDT) 248 if (bootm_find_fdt(flag, argc, argv)) 249 return 1; 250 #endif 251 252 return 0; 253 } 254 255 static int bootm_find_other(cmd_tbl_t *cmdtp, int flag, int argc, 256 char * const argv[]) 257 { 258 if (((images.os.type == IH_TYPE_KERNEL) || 259 (images.os.type == IH_TYPE_KERNEL_NOLOAD) || 260 (images.os.type == IH_TYPE_MULTI)) && 261 (images.os.os == IH_OS_LINUX || 262 images.os.os == IH_OS_VXWORKS)) 263 return bootm_find_ramdisk_fdt(flag, argc, argv); 264 265 return 0; 266 } 267 #endif /* USE_HOSTCC */ 268 269 /** 270 * decomp_image() - decompress the operating system 271 * 272 * @comp: Compression algorithm that is used (IH_COMP_...) 273 * @load: Destination load address in U-Boot memory 274 * @image_start Image start address (where we are decompressing from) 275 * @type: OS type (IH_OS_...) 276 * @load_bug: Place to decompress to 277 * @image_buf: Address to decompress from 278 * @return 0 if OK, -ve on error (BOOTM_ERR_...) 279 */ 280 static int decomp_image(int comp, ulong load, ulong image_start, int type, 281 void *load_buf, void *image_buf, ulong image_len, 282 ulong *load_end) 283 { 284 const char *type_name = genimg_get_type_name(type); 285 __attribute__((unused)) uint unc_len = CONFIG_SYS_BOOTM_LEN; 286 287 *load_end = load; 288 switch (comp) { 289 case IH_COMP_NONE: 290 if (load == image_start) { 291 printf(" XIP %s ... ", type_name); 292 } else { 293 printf(" Loading %s ... ", type_name); 294 memmove_wd(load_buf, image_buf, image_len, CHUNKSZ); 295 } 296 *load_end = load + image_len; 297 break; 298 #ifdef CONFIG_GZIP 299 case IH_COMP_GZIP: 300 printf(" Uncompressing %s ... ", type_name); 301 if (gunzip(load_buf, unc_len, image_buf, &image_len) != 0) { 302 puts("GUNZIP: uncompress, out-of-mem or overwrite error - must RESET board to recover\n"); 303 return BOOTM_ERR_RESET; 304 } 305 306 *load_end = load + image_len; 307 break; 308 #endif /* CONFIG_GZIP */ 309 #ifdef CONFIG_BZIP2 310 case IH_COMP_BZIP2: 311 printf(" Uncompressing %s ... ", type_name); 312 /* 313 * If we've got less than 4 MB of malloc() space, 314 * use slower decompression algorithm which requires 315 * at most 2300 KB of memory. 316 */ 317 int i = BZ2_bzBuffToBuffDecompress(load_buf, &unc_len, 318 image_buf, image_len, 319 CONFIG_SYS_MALLOC_LEN < (4096 * 1024), 0); 320 if (i != BZ_OK) { 321 printf("BUNZIP2: uncompress or overwrite error %d - must RESET board to recover\n", 322 i); 323 return BOOTM_ERR_RESET; 324 } 325 326 *load_end = load + unc_len; 327 break; 328 #endif /* CONFIG_BZIP2 */ 329 #ifdef CONFIG_LZMA 330 case IH_COMP_LZMA: { 331 SizeT lzma_len = unc_len; 332 int ret; 333 334 printf(" Uncompressing %s ... ", type_name); 335 336 ret = lzmaBuffToBuffDecompress(load_buf, &lzma_len, 337 image_buf, image_len); 338 unc_len = lzma_len; 339 if (ret != SZ_OK) { 340 printf("LZMA: uncompress or overwrite error %d - must RESET board to recover\n", 341 ret); 342 bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE); 343 return BOOTM_ERR_RESET; 344 } 345 *load_end = load + unc_len; 346 break; 347 } 348 #endif /* CONFIG_LZMA */ 349 #ifdef CONFIG_LZO 350 case IH_COMP_LZO: { 351 size_t size = unc_len; 352 int ret; 353 354 printf(" Uncompressing %s ... ", type_name); 355 356 ret = lzop_decompress(image_buf, image_len, load_buf, &size); 357 if (ret != LZO_E_OK) { 358 printf("LZO: uncompress or overwrite error %d - must RESET board to recover\n", 359 ret); 360 return BOOTM_ERR_RESET; 361 } 362 363 *load_end = load + size; 364 break; 365 } 366 #endif /* CONFIG_LZO */ 367 default: 368 printf("Unimplemented compression type %d\n", comp); 369 return BOOTM_ERR_UNIMPLEMENTED; 370 } 371 372 puts("OK\n"); 373 374 return 0; 375 } 376 377 #ifndef USE_HOSTCC 378 static int bootm_load_os(bootm_headers_t *images, unsigned long *load_end, 379 int boot_progress) 380 { 381 image_info_t os = images->os; 382 ulong load = os.load; 383 ulong blob_start = os.start; 384 ulong blob_end = os.end; 385 ulong image_start = os.image_start; 386 ulong image_len = os.image_len; 387 bool no_overlap; 388 void *load_buf, *image_buf; 389 int err; 390 391 load_buf = map_sysmem(load, 0); 392 image_buf = map_sysmem(os.image_start, image_len); 393 err = decomp_image(os.comp, load, os.image_start, os.type, load_buf, 394 image_buf, image_len, load_end); 395 if (err) { 396 bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE); 397 return err; 398 } 399 flush_cache(load, (*load_end - load) * sizeof(ulong)); 400 401 debug(" kernel loaded at 0x%08lx, end = 0x%08lx\n", load, *load_end); 402 bootstage_mark(BOOTSTAGE_ID_KERNEL_LOADED); 403 404 no_overlap = (os.comp == IH_COMP_NONE && load == image_start); 405 406 if (!no_overlap && (load < blob_end) && (*load_end > blob_start)) { 407 debug("images.os.start = 0x%lX, images.os.end = 0x%lx\n", 408 blob_start, blob_end); 409 debug("images.os.load = 0x%lx, load_end = 0x%lx\n", load, 410 *load_end); 411 412 /* Check what type of image this is. */ 413 if (images->legacy_hdr_valid) { 414 if (image_get_type(&images->legacy_hdr_os_copy) 415 == IH_TYPE_MULTI) 416 puts("WARNING: legacy format multi component image overwritten\n"); 417 return BOOTM_ERR_OVERLAP; 418 } else { 419 puts("ERROR: new format image overwritten - must RESET the board to recover\n"); 420 bootstage_error(BOOTSTAGE_ID_OVERWRITTEN); 421 return BOOTM_ERR_RESET; 422 } 423 } 424 425 return 0; 426 } 427 428 /** 429 * bootm_disable_interrupts() - Disable interrupts in preparation for load/boot 430 * 431 * @return interrupt flag (0 if interrupts were disabled, non-zero if they were 432 * enabled) 433 */ 434 ulong bootm_disable_interrupts(void) 435 { 436 ulong iflag; 437 438 /* 439 * We have reached the point of no return: we are going to 440 * overwrite all exception vector code, so we cannot easily 441 * recover from any failures any more... 442 */ 443 iflag = disable_interrupts(); 444 #ifdef CONFIG_NETCONSOLE 445 /* Stop the ethernet stack if NetConsole could have left it up */ 446 eth_halt(); 447 eth_unregister(eth_get_dev()); 448 #endif 449 450 #if defined(CONFIG_CMD_USB) 451 /* 452 * turn off USB to prevent the host controller from writing to the 453 * SDRAM while Linux is booting. This could happen (at least for OHCI 454 * controller), because the HCCA (Host Controller Communication Area) 455 * lies within the SDRAM and the host controller writes continously to 456 * this area (as busmaster!). The HccaFrameNumber is for example 457 * updated every 1 ms within the HCCA structure in SDRAM! For more 458 * details see the OpenHCI specification. 459 */ 460 usb_stop(); 461 #endif 462 return iflag; 463 } 464 465 #if defined(CONFIG_SILENT_CONSOLE) && !defined(CONFIG_SILENT_U_BOOT_ONLY) 466 467 #define CONSOLE_ARG "console=" 468 #define CONSOLE_ARG_LEN (sizeof(CONSOLE_ARG) - 1) 469 470 static void fixup_silent_linux(void) 471 { 472 char *buf; 473 const char *env_val; 474 char *cmdline = getenv("bootargs"); 475 int want_silent; 476 477 /* 478 * Only fix cmdline when requested. The environment variable can be: 479 * 480 * no - we never fixup 481 * yes - we always fixup 482 * unset - we rely on the console silent flag 483 */ 484 want_silent = getenv_yesno("silent_linux"); 485 if (want_silent == 0) 486 return; 487 else if (want_silent == -1 && !(gd->flags & GD_FLG_SILENT)) 488 return; 489 490 debug("before silent fix-up: %s\n", cmdline); 491 if (cmdline && (cmdline[0] != '\0')) { 492 char *start = strstr(cmdline, CONSOLE_ARG); 493 494 /* Allocate space for maximum possible new command line */ 495 buf = malloc(strlen(cmdline) + 1 + CONSOLE_ARG_LEN + 1); 496 if (!buf) { 497 debug("%s: out of memory\n", __func__); 498 return; 499 } 500 501 if (start) { 502 char *end = strchr(start, ' '); 503 int num_start_bytes = start - cmdline + CONSOLE_ARG_LEN; 504 505 strncpy(buf, cmdline, num_start_bytes); 506 if (end) 507 strcpy(buf + num_start_bytes, end); 508 else 509 buf[num_start_bytes] = '\0'; 510 } else { 511 sprintf(buf, "%s %s", cmdline, CONSOLE_ARG); 512 } 513 env_val = buf; 514 } else { 515 buf = NULL; 516 env_val = CONSOLE_ARG; 517 } 518 519 setenv("bootargs", env_val); 520 debug("after silent fix-up: %s\n", env_val); 521 free(buf); 522 } 523 #endif /* CONFIG_SILENT_CONSOLE */ 524 525 /** 526 * Execute selected states of the bootm command. 527 * 528 * Note the arguments to this state must be the first argument, Any 'bootm' 529 * or sub-command arguments must have already been taken. 530 * 531 * Note that if states contains more than one flag it MUST contain 532 * BOOTM_STATE_START, since this handles and consumes the command line args. 533 * 534 * Also note that aside from boot_os_fn functions and bootm_load_os no other 535 * functions we store the return value of in 'ret' may use a negative return 536 * value, without special handling. 537 * 538 * @param cmdtp Pointer to bootm command table entry 539 * @param flag Command flags (CMD_FLAG_...) 540 * @param argc Number of subcommand arguments (0 = no arguments) 541 * @param argv Arguments 542 * @param states Mask containing states to run (BOOTM_STATE_...) 543 * @param images Image header information 544 * @param boot_progress 1 to show boot progress, 0 to not do this 545 * @return 0 if ok, something else on error. Some errors will cause this 546 * function to perform a reboot! If states contains BOOTM_STATE_OS_GO 547 * then the intent is to boot an OS, so this function will not return 548 * unless the image type is standalone. 549 */ 550 int do_bootm_states(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[], 551 int states, bootm_headers_t *images, int boot_progress) 552 { 553 boot_os_fn *boot_fn; 554 ulong iflag = 0; 555 int ret = 0, need_boot_fn; 556 557 images->state |= states; 558 559 /* 560 * Work through the states and see how far we get. We stop on 561 * any error. 562 */ 563 if (states & BOOTM_STATE_START) 564 ret = bootm_start(cmdtp, flag, argc, argv); 565 566 if (!ret && (states & BOOTM_STATE_FINDOS)) 567 ret = bootm_find_os(cmdtp, flag, argc, argv); 568 569 if (!ret && (states & BOOTM_STATE_FINDOTHER)) { 570 ret = bootm_find_other(cmdtp, flag, argc, argv); 571 argc = 0; /* consume the args */ 572 } 573 574 /* Load the OS */ 575 if (!ret && (states & BOOTM_STATE_LOADOS)) { 576 ulong load_end; 577 578 iflag = bootm_disable_interrupts(); 579 ret = bootm_load_os(images, &load_end, 0); 580 if (ret == 0) 581 lmb_reserve(&images->lmb, images->os.load, 582 (load_end - images->os.load)); 583 else if (ret && ret != BOOTM_ERR_OVERLAP) 584 goto err; 585 else if (ret == BOOTM_ERR_OVERLAP) 586 ret = 0; 587 #if defined(CONFIG_SILENT_CONSOLE) && !defined(CONFIG_SILENT_U_BOOT_ONLY) 588 if (images->os.os == IH_OS_LINUX) 589 fixup_silent_linux(); 590 #endif 591 } 592 593 /* Relocate the ramdisk */ 594 #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH 595 if (!ret && (states & BOOTM_STATE_RAMDISK)) { 596 ulong rd_len = images->rd_end - images->rd_start; 597 598 ret = boot_ramdisk_high(&images->lmb, images->rd_start, 599 rd_len, &images->initrd_start, &images->initrd_end); 600 if (!ret) { 601 setenv_hex("initrd_start", images->initrd_start); 602 setenv_hex("initrd_end", images->initrd_end); 603 } 604 } 605 #endif 606 #if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_LMB) 607 if (!ret && (states & BOOTM_STATE_FDT)) { 608 boot_fdt_add_mem_rsv_regions(&images->lmb, images->ft_addr); 609 ret = boot_relocate_fdt(&images->lmb, &images->ft_addr, 610 &images->ft_len); 611 } 612 #endif 613 614 /* From now on, we need the OS boot function */ 615 if (ret) 616 return ret; 617 boot_fn = bootm_os_get_boot_func(images->os.os); 618 need_boot_fn = states & (BOOTM_STATE_OS_CMDLINE | 619 BOOTM_STATE_OS_BD_T | BOOTM_STATE_OS_PREP | 620 BOOTM_STATE_OS_FAKE_GO | BOOTM_STATE_OS_GO); 621 if (boot_fn == NULL && need_boot_fn) { 622 if (iflag) 623 enable_interrupts(); 624 printf("ERROR: booting os '%s' (%d) is not supported\n", 625 genimg_get_os_name(images->os.os), images->os.os); 626 bootstage_error(BOOTSTAGE_ID_CHECK_BOOT_OS); 627 return 1; 628 } 629 630 /* Call various other states that are not generally used */ 631 if (!ret && (states & BOOTM_STATE_OS_CMDLINE)) 632 ret = boot_fn(BOOTM_STATE_OS_CMDLINE, argc, argv, images); 633 if (!ret && (states & BOOTM_STATE_OS_BD_T)) 634 ret = boot_fn(BOOTM_STATE_OS_BD_T, argc, argv, images); 635 if (!ret && (states & BOOTM_STATE_OS_PREP)) 636 ret = boot_fn(BOOTM_STATE_OS_PREP, argc, argv, images); 637 638 #ifdef CONFIG_TRACE 639 /* Pretend to run the OS, then run a user command */ 640 if (!ret && (states & BOOTM_STATE_OS_FAKE_GO)) { 641 char *cmd_list = getenv("fakegocmd"); 642 643 ret = boot_selected_os(argc, argv, BOOTM_STATE_OS_FAKE_GO, 644 images, boot_fn); 645 if (!ret && cmd_list) 646 ret = run_command_list(cmd_list, -1, flag); 647 } 648 #endif 649 650 /* Check for unsupported subcommand. */ 651 if (ret) { 652 puts("subcommand not supported\n"); 653 return ret; 654 } 655 656 /* Now run the OS! We hope this doesn't return */ 657 if (!ret && (states & BOOTM_STATE_OS_GO)) 658 ret = boot_selected_os(argc, argv, BOOTM_STATE_OS_GO, 659 images, boot_fn); 660 661 /* Deal with any fallout */ 662 err: 663 if (iflag) 664 enable_interrupts(); 665 666 if (ret == BOOTM_ERR_UNIMPLEMENTED) 667 bootstage_error(BOOTSTAGE_ID_DECOMP_UNIMPL); 668 else if (ret == BOOTM_ERR_RESET) 669 do_reset(cmdtp, flag, argc, argv); 670 671 return ret; 672 } 673 674 #if defined(CONFIG_IMAGE_FORMAT_LEGACY) 675 /** 676 * image_get_kernel - verify legacy format kernel image 677 * @img_addr: in RAM address of the legacy format image to be verified 678 * @verify: data CRC verification flag 679 * 680 * image_get_kernel() verifies legacy image integrity and returns pointer to 681 * legacy image header if image verification was completed successfully. 682 * 683 * returns: 684 * pointer to a legacy image header if valid image was found 685 * otherwise return NULL 686 */ 687 static image_header_t *image_get_kernel(ulong img_addr, int verify) 688 { 689 image_header_t *hdr = (image_header_t *)img_addr; 690 691 if (!image_check_magic(hdr)) { 692 puts("Bad Magic Number\n"); 693 bootstage_error(BOOTSTAGE_ID_CHECK_MAGIC); 694 return NULL; 695 } 696 bootstage_mark(BOOTSTAGE_ID_CHECK_HEADER); 697 698 if (!image_check_hcrc(hdr)) { 699 puts("Bad Header Checksum\n"); 700 bootstage_error(BOOTSTAGE_ID_CHECK_HEADER); 701 return NULL; 702 } 703 704 bootstage_mark(BOOTSTAGE_ID_CHECK_CHECKSUM); 705 image_print_contents(hdr); 706 707 if (verify) { 708 puts(" Verifying Checksum ... "); 709 if (!image_check_dcrc(hdr)) { 710 printf("Bad Data CRC\n"); 711 bootstage_error(BOOTSTAGE_ID_CHECK_CHECKSUM); 712 return NULL; 713 } 714 puts("OK\n"); 715 } 716 bootstage_mark(BOOTSTAGE_ID_CHECK_ARCH); 717 718 if (!image_check_target_arch(hdr)) { 719 printf("Unsupported Architecture 0x%x\n", image_get_arch(hdr)); 720 bootstage_error(BOOTSTAGE_ID_CHECK_ARCH); 721 return NULL; 722 } 723 return hdr; 724 } 725 #endif 726 727 /** 728 * boot_get_kernel - find kernel image 729 * @os_data: pointer to a ulong variable, will hold os data start address 730 * @os_len: pointer to a ulong variable, will hold os data length 731 * 732 * boot_get_kernel() tries to find a kernel image, verifies its integrity 733 * and locates kernel data. 734 * 735 * returns: 736 * pointer to image header if valid image was found, plus kernel start 737 * address and length, otherwise NULL 738 */ 739 static const void *boot_get_kernel(cmd_tbl_t *cmdtp, int flag, int argc, 740 char * const argv[], bootm_headers_t *images, 741 ulong *os_data, ulong *os_len) 742 { 743 #if defined(CONFIG_IMAGE_FORMAT_LEGACY) 744 image_header_t *hdr; 745 #endif 746 ulong img_addr; 747 const void *buf; 748 const char *fit_uname_config = NULL; 749 const char *fit_uname_kernel = NULL; 750 #if defined(CONFIG_FIT) 751 int os_noffset; 752 #endif 753 754 img_addr = genimg_get_kernel_addr_fit(argc < 1 ? NULL : argv[0], 755 &fit_uname_config, 756 &fit_uname_kernel); 757 758 bootstage_mark(BOOTSTAGE_ID_CHECK_MAGIC); 759 760 /* copy from dataflash if needed */ 761 img_addr = genimg_get_image(img_addr); 762 763 /* check image type, for FIT images get FIT kernel node */ 764 *os_data = *os_len = 0; 765 buf = map_sysmem(img_addr, 0); 766 switch (genimg_get_format(buf)) { 767 #if defined(CONFIG_IMAGE_FORMAT_LEGACY) 768 case IMAGE_FORMAT_LEGACY: 769 printf("## Booting kernel from Legacy Image at %08lx ...\n", 770 img_addr); 771 hdr = image_get_kernel(img_addr, images->verify); 772 if (!hdr) 773 return NULL; 774 bootstage_mark(BOOTSTAGE_ID_CHECK_IMAGETYPE); 775 776 /* get os_data and os_len */ 777 switch (image_get_type(hdr)) { 778 case IH_TYPE_KERNEL: 779 case IH_TYPE_KERNEL_NOLOAD: 780 *os_data = image_get_data(hdr); 781 *os_len = image_get_data_size(hdr); 782 break; 783 case IH_TYPE_MULTI: 784 image_multi_getimg(hdr, 0, os_data, os_len); 785 break; 786 case IH_TYPE_STANDALONE: 787 *os_data = image_get_data(hdr); 788 *os_len = image_get_data_size(hdr); 789 break; 790 default: 791 printf("Wrong Image Type for %s command\n", 792 cmdtp->name); 793 bootstage_error(BOOTSTAGE_ID_CHECK_IMAGETYPE); 794 return NULL; 795 } 796 797 /* 798 * copy image header to allow for image overwrites during 799 * kernel decompression. 800 */ 801 memmove(&images->legacy_hdr_os_copy, hdr, 802 sizeof(image_header_t)); 803 804 /* save pointer to image header */ 805 images->legacy_hdr_os = hdr; 806 807 images->legacy_hdr_valid = 1; 808 bootstage_mark(BOOTSTAGE_ID_DECOMP_IMAGE); 809 break; 810 #endif 811 #if defined(CONFIG_FIT) 812 case IMAGE_FORMAT_FIT: 813 os_noffset = fit_image_load(images, img_addr, 814 &fit_uname_kernel, &fit_uname_config, 815 IH_ARCH_DEFAULT, IH_TYPE_KERNEL, 816 BOOTSTAGE_ID_FIT_KERNEL_START, 817 FIT_LOAD_IGNORED, os_data, os_len); 818 if (os_noffset < 0) 819 return NULL; 820 821 images->fit_hdr_os = map_sysmem(img_addr, 0); 822 images->fit_uname_os = fit_uname_kernel; 823 images->fit_uname_cfg = fit_uname_config; 824 images->fit_noffset_os = os_noffset; 825 break; 826 #endif 827 #ifdef CONFIG_ANDROID_BOOT_IMAGE 828 case IMAGE_FORMAT_ANDROID: 829 printf("## Booting Android Image at 0x%08lx ...\n", img_addr); 830 if (android_image_get_kernel(buf, images->verify, 831 os_data, os_len)) 832 return NULL; 833 break; 834 #endif 835 default: 836 printf("Wrong Image Format for %s command\n", cmdtp->name); 837 bootstage_error(BOOTSTAGE_ID_FIT_KERNEL_INFO); 838 return NULL; 839 } 840 841 debug(" kernel data at 0x%08lx, len = 0x%08lx (%ld)\n", 842 *os_data, *os_len, *os_len); 843 844 return buf; 845 } 846 #else /* USE_HOSTCC */ 847 848 void memmove_wd(void *to, void *from, size_t len, ulong chunksz) 849 { 850 memmove(to, from, len); 851 } 852 853 static int bootm_host_load_image(const void *fit, int req_image_type) 854 { 855 const char *fit_uname_config = NULL; 856 ulong data, len; 857 bootm_headers_t images; 858 int noffset; 859 ulong load_end; 860 uint8_t image_type; 861 uint8_t imape_comp; 862 void *load_buf; 863 int ret; 864 865 memset(&images, '\0', sizeof(images)); 866 images.verify = 1; 867 noffset = fit_image_load(&images, (ulong)fit, 868 NULL, &fit_uname_config, 869 IH_ARCH_DEFAULT, req_image_type, -1, 870 FIT_LOAD_IGNORED, &data, &len); 871 if (noffset < 0) 872 return noffset; 873 if (fit_image_get_type(fit, noffset, &image_type)) { 874 puts("Can't get image type!\n"); 875 return -EINVAL; 876 } 877 878 if (fit_image_get_comp(fit, noffset, &imape_comp)) { 879 puts("Can't get image compression!\n"); 880 return -EINVAL; 881 } 882 883 /* Allow the image to expand by a factor of 4, should be safe */ 884 load_buf = malloc((1 << 20) + len * 4); 885 ret = decomp_image(imape_comp, 0, data, image_type, load_buf, 886 (void *)data, len, &load_end); 887 free(load_buf); 888 if (ret && ret != BOOTM_ERR_UNIMPLEMENTED) 889 return ret; 890 891 return 0; 892 } 893 894 int bootm_host_load_images(const void *fit, int cfg_noffset) 895 { 896 static uint8_t image_types[] = { 897 IH_TYPE_KERNEL, 898 IH_TYPE_FLATDT, 899 IH_TYPE_RAMDISK, 900 }; 901 int err = 0; 902 int i; 903 904 for (i = 0; i < ARRAY_SIZE(image_types); i++) { 905 int ret; 906 907 ret = bootm_host_load_image(fit, image_types[i]); 908 if (!err && ret && ret != -ENOENT) 909 err = ret; 910 } 911 912 /* Return the first error we found */ 913 return err; 914 } 915 916 #endif /* ndef USE_HOSTCC */ 917