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_HOSTC */ 268 269 #if defined(CONFIG_GZIP) || defined(CONFIG_GZIP) || defined(CONFIG_BZIP2) || \ 270 defined(CONFIG_LZMA) || defined(CONFIG_LZO) 271 static void print_decomp_msg(const char *type_name) 272 { 273 printf(" Uncompressing %s ... ", type_name); 274 } 275 276 static int handle_decomp_error(const char *algo, size_t size, size_t unc_len, 277 int ret) 278 { 279 if (size >= unc_len) 280 puts("Image too large: increase CONFIG_SYS_BOOTM_LEN\n"); 281 else 282 printf("%s: uncompress or overwrite error %d\n", algo, ret); 283 puts("Must RESET board to recover\n"); 284 #ifndef USE_HOSTCC 285 bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE); 286 #endif 287 288 return BOOTM_ERR_RESET; 289 } 290 #endif 291 292 int bootm_decomp_image(int comp, ulong load, ulong image_start, int type, 293 void *load_buf, void *image_buf, ulong image_len, 294 uint unc_len, ulong *load_end) 295 { 296 const char *type_name = genimg_get_type_name(type); 297 298 *load_end = load; 299 switch (comp) { 300 case IH_COMP_NONE: 301 if (load == image_start) { 302 printf(" XIP %s ... ", type_name); 303 } else { 304 printf(" Loading %s ... ", type_name); 305 memmove_wd(load_buf, image_buf, image_len, CHUNKSZ); 306 } 307 *load_end = load + image_len; 308 break; 309 #ifdef CONFIG_GZIP 310 case IH_COMP_GZIP: { 311 int ret; 312 313 print_decomp_msg(type_name); 314 ret = gunzip(load_buf, unc_len, image_buf, &image_len); 315 if (ret != 0) { 316 return handle_decomp_error("GUNZIP", image_len, 317 unc_len, ret); 318 } 319 320 *load_end = load + image_len; 321 break; 322 } 323 #endif /* CONFIG_GZIP */ 324 #ifdef CONFIG_BZIP2 325 case IH_COMP_BZIP2: { 326 size_t size = unc_len; 327 328 print_decomp_msg(type_name); 329 /* 330 * If we've got less than 4 MB of malloc() space, 331 * use slower decompression algorithm which requires 332 * at most 2300 KB of memory. 333 */ 334 int i = BZ2_bzBuffToBuffDecompress(load_buf, &unc_len, 335 image_buf, image_len, 336 CONFIG_SYS_MALLOC_LEN < (4096 * 1024), 0); 337 if (i != BZ_OK) { 338 return handle_decomp_error("BUNZIP2", size, unc_len, 339 i); 340 } 341 342 *load_end = load + unc_len; 343 break; 344 } 345 #endif /* CONFIG_BZIP2 */ 346 #ifdef CONFIG_LZMA 347 case IH_COMP_LZMA: { 348 SizeT lzma_len = unc_len; 349 int ret; 350 351 print_decomp_msg(type_name); 352 ret = lzmaBuffToBuffDecompress(load_buf, &lzma_len, 353 image_buf, image_len); 354 if (ret != SZ_OK) { 355 return handle_decomp_error("LZMA", lzma_len, unc_len, 356 ret); 357 } 358 unc_len = lzma_len; 359 *load_end = load + unc_len; 360 break; 361 } 362 #endif /* CONFIG_LZMA */ 363 #ifdef CONFIG_LZO 364 case IH_COMP_LZO: { 365 size_t size = unc_len; 366 int ret; 367 368 print_decomp_msg(type_name); 369 370 ret = lzop_decompress(image_buf, image_len, load_buf, &size); 371 if (ret != LZO_E_OK) 372 return handle_decomp_error("LZO", size, unc_len, ret); 373 374 *load_end = load + size; 375 break; 376 } 377 #endif /* CONFIG_LZO */ 378 default: 379 printf("Unimplemented compression type %d\n", comp); 380 return BOOTM_ERR_UNIMPLEMENTED; 381 } 382 383 puts("OK\n"); 384 385 return 0; 386 } 387 388 #ifndef USE_HOSTCC 389 static int bootm_load_os(bootm_headers_t *images, unsigned long *load_end, 390 int boot_progress) 391 { 392 image_info_t os = images->os; 393 ulong load = os.load; 394 ulong blob_start = os.start; 395 ulong blob_end = os.end; 396 ulong image_start = os.image_start; 397 ulong image_len = os.image_len; 398 bool no_overlap; 399 void *load_buf, *image_buf; 400 int err; 401 402 load_buf = map_sysmem(load, 0); 403 image_buf = map_sysmem(os.image_start, image_len); 404 err = bootm_decomp_image(os.comp, load, os.image_start, os.type, 405 load_buf, image_buf, image_len, 406 CONFIG_SYS_BOOTM_LEN, load_end); 407 if (err) { 408 bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE); 409 return err; 410 } 411 flush_cache(load, (*load_end - load) * sizeof(ulong)); 412 413 debug(" kernel loaded at 0x%08lx, end = 0x%08lx\n", load, *load_end); 414 bootstage_mark(BOOTSTAGE_ID_KERNEL_LOADED); 415 416 no_overlap = (os.comp == IH_COMP_NONE && load == image_start); 417 418 if (!no_overlap && (load < blob_end) && (*load_end > blob_start)) { 419 debug("images.os.start = 0x%lX, images.os.end = 0x%lx\n", 420 blob_start, blob_end); 421 debug("images.os.load = 0x%lx, load_end = 0x%lx\n", load, 422 *load_end); 423 424 /* Check what type of image this is. */ 425 if (images->legacy_hdr_valid) { 426 if (image_get_type(&images->legacy_hdr_os_copy) 427 == IH_TYPE_MULTI) 428 puts("WARNING: legacy format multi component image overwritten\n"); 429 return BOOTM_ERR_OVERLAP; 430 } else { 431 puts("ERROR: new format image overwritten - must RESET the board to recover\n"); 432 bootstage_error(BOOTSTAGE_ID_OVERWRITTEN); 433 return BOOTM_ERR_RESET; 434 } 435 } 436 437 return 0; 438 } 439 440 /** 441 * bootm_disable_interrupts() - Disable interrupts in preparation for load/boot 442 * 443 * @return interrupt flag (0 if interrupts were disabled, non-zero if they were 444 * enabled) 445 */ 446 ulong bootm_disable_interrupts(void) 447 { 448 ulong iflag; 449 450 /* 451 * We have reached the point of no return: we are going to 452 * overwrite all exception vector code, so we cannot easily 453 * recover from any failures any more... 454 */ 455 iflag = disable_interrupts(); 456 #ifdef CONFIG_NETCONSOLE 457 /* Stop the ethernet stack if NetConsole could have left it up */ 458 eth_halt(); 459 eth_unregister(eth_get_dev()); 460 #endif 461 462 #if defined(CONFIG_CMD_USB) 463 /* 464 * turn off USB to prevent the host controller from writing to the 465 * SDRAM while Linux is booting. This could happen (at least for OHCI 466 * controller), because the HCCA (Host Controller Communication Area) 467 * lies within the SDRAM and the host controller writes continously to 468 * this area (as busmaster!). The HccaFrameNumber is for example 469 * updated every 1 ms within the HCCA structure in SDRAM! For more 470 * details see the OpenHCI specification. 471 */ 472 usb_stop(); 473 #endif 474 return iflag; 475 } 476 477 #if defined(CONFIG_SILENT_CONSOLE) && !defined(CONFIG_SILENT_U_BOOT_ONLY) 478 479 #define CONSOLE_ARG "console=" 480 #define CONSOLE_ARG_LEN (sizeof(CONSOLE_ARG) - 1) 481 482 static void fixup_silent_linux(void) 483 { 484 char *buf; 485 const char *env_val; 486 char *cmdline = getenv("bootargs"); 487 int want_silent; 488 489 /* 490 * Only fix cmdline when requested. The environment variable can be: 491 * 492 * no - we never fixup 493 * yes - we always fixup 494 * unset - we rely on the console silent flag 495 */ 496 want_silent = getenv_yesno("silent_linux"); 497 if (want_silent == 0) 498 return; 499 else if (want_silent == -1 && !(gd->flags & GD_FLG_SILENT)) 500 return; 501 502 debug("before silent fix-up: %s\n", cmdline); 503 if (cmdline && (cmdline[0] != '\0')) { 504 char *start = strstr(cmdline, CONSOLE_ARG); 505 506 /* Allocate space for maximum possible new command line */ 507 buf = malloc(strlen(cmdline) + 1 + CONSOLE_ARG_LEN + 1); 508 if (!buf) { 509 debug("%s: out of memory\n", __func__); 510 return; 511 } 512 513 if (start) { 514 char *end = strchr(start, ' '); 515 int num_start_bytes = start - cmdline + CONSOLE_ARG_LEN; 516 517 strncpy(buf, cmdline, num_start_bytes); 518 if (end) 519 strcpy(buf + num_start_bytes, end); 520 else 521 buf[num_start_bytes] = '\0'; 522 } else { 523 sprintf(buf, "%s %s", cmdline, CONSOLE_ARG); 524 } 525 env_val = buf; 526 } else { 527 buf = NULL; 528 env_val = CONSOLE_ARG; 529 } 530 531 setenv("bootargs", env_val); 532 debug("after silent fix-up: %s\n", env_val); 533 free(buf); 534 } 535 #endif /* CONFIG_SILENT_CONSOLE */ 536 537 /** 538 * Execute selected states of the bootm command. 539 * 540 * Note the arguments to this state must be the first argument, Any 'bootm' 541 * or sub-command arguments must have already been taken. 542 * 543 * Note that if states contains more than one flag it MUST contain 544 * BOOTM_STATE_START, since this handles and consumes the command line args. 545 * 546 * Also note that aside from boot_os_fn functions and bootm_load_os no other 547 * functions we store the return value of in 'ret' may use a negative return 548 * value, without special handling. 549 * 550 * @param cmdtp Pointer to bootm command table entry 551 * @param flag Command flags (CMD_FLAG_...) 552 * @param argc Number of subcommand arguments (0 = no arguments) 553 * @param argv Arguments 554 * @param states Mask containing states to run (BOOTM_STATE_...) 555 * @param images Image header information 556 * @param boot_progress 1 to show boot progress, 0 to not do this 557 * @return 0 if ok, something else on error. Some errors will cause this 558 * function to perform a reboot! If states contains BOOTM_STATE_OS_GO 559 * then the intent is to boot an OS, so this function will not return 560 * unless the image type is standalone. 561 */ 562 int do_bootm_states(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[], 563 int states, bootm_headers_t *images, int boot_progress) 564 { 565 boot_os_fn *boot_fn; 566 ulong iflag = 0; 567 int ret = 0, need_boot_fn; 568 569 images->state |= states; 570 571 /* 572 * Work through the states and see how far we get. We stop on 573 * any error. 574 */ 575 if (states & BOOTM_STATE_START) 576 ret = bootm_start(cmdtp, flag, argc, argv); 577 578 if (!ret && (states & BOOTM_STATE_FINDOS)) 579 ret = bootm_find_os(cmdtp, flag, argc, argv); 580 581 if (!ret && (states & BOOTM_STATE_FINDOTHER)) { 582 ret = bootm_find_other(cmdtp, flag, argc, argv); 583 argc = 0; /* consume the args */ 584 } 585 586 /* Load the OS */ 587 if (!ret && (states & BOOTM_STATE_LOADOS)) { 588 ulong load_end; 589 590 iflag = bootm_disable_interrupts(); 591 ret = bootm_load_os(images, &load_end, 0); 592 if (ret == 0) 593 lmb_reserve(&images->lmb, images->os.load, 594 (load_end - images->os.load)); 595 else if (ret && ret != BOOTM_ERR_OVERLAP) 596 goto err; 597 else if (ret == BOOTM_ERR_OVERLAP) 598 ret = 0; 599 #if defined(CONFIG_SILENT_CONSOLE) && !defined(CONFIG_SILENT_U_BOOT_ONLY) 600 if (images->os.os == IH_OS_LINUX) 601 fixup_silent_linux(); 602 #endif 603 } 604 605 /* Relocate the ramdisk */ 606 #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH 607 if (!ret && (states & BOOTM_STATE_RAMDISK)) { 608 ulong rd_len = images->rd_end - images->rd_start; 609 610 ret = boot_ramdisk_high(&images->lmb, images->rd_start, 611 rd_len, &images->initrd_start, &images->initrd_end); 612 if (!ret) { 613 setenv_hex("initrd_start", images->initrd_start); 614 setenv_hex("initrd_end", images->initrd_end); 615 } 616 } 617 #endif 618 #if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_LMB) 619 if (!ret && (states & BOOTM_STATE_FDT)) { 620 boot_fdt_add_mem_rsv_regions(&images->lmb, images->ft_addr); 621 ret = boot_relocate_fdt(&images->lmb, &images->ft_addr, 622 &images->ft_len); 623 } 624 #endif 625 626 /* From now on, we need the OS boot function */ 627 if (ret) 628 return ret; 629 boot_fn = bootm_os_get_boot_func(images->os.os); 630 need_boot_fn = states & (BOOTM_STATE_OS_CMDLINE | 631 BOOTM_STATE_OS_BD_T | BOOTM_STATE_OS_PREP | 632 BOOTM_STATE_OS_FAKE_GO | BOOTM_STATE_OS_GO); 633 if (boot_fn == NULL && need_boot_fn) { 634 if (iflag) 635 enable_interrupts(); 636 printf("ERROR: booting os '%s' (%d) is not supported\n", 637 genimg_get_os_name(images->os.os), images->os.os); 638 bootstage_error(BOOTSTAGE_ID_CHECK_BOOT_OS); 639 return 1; 640 } 641 642 /* Call various other states that are not generally used */ 643 if (!ret && (states & BOOTM_STATE_OS_CMDLINE)) 644 ret = boot_fn(BOOTM_STATE_OS_CMDLINE, argc, argv, images); 645 if (!ret && (states & BOOTM_STATE_OS_BD_T)) 646 ret = boot_fn(BOOTM_STATE_OS_BD_T, argc, argv, images); 647 if (!ret && (states & BOOTM_STATE_OS_PREP)) 648 ret = boot_fn(BOOTM_STATE_OS_PREP, argc, argv, images); 649 650 #ifdef CONFIG_TRACE 651 /* Pretend to run the OS, then run a user command */ 652 if (!ret && (states & BOOTM_STATE_OS_FAKE_GO)) { 653 char *cmd_list = getenv("fakegocmd"); 654 655 ret = boot_selected_os(argc, argv, BOOTM_STATE_OS_FAKE_GO, 656 images, boot_fn); 657 if (!ret && cmd_list) 658 ret = run_command_list(cmd_list, -1, flag); 659 } 660 #endif 661 662 /* Check for unsupported subcommand. */ 663 if (ret) { 664 puts("subcommand not supported\n"); 665 return ret; 666 } 667 668 /* Now run the OS! We hope this doesn't return */ 669 if (!ret && (states & BOOTM_STATE_OS_GO)) 670 ret = boot_selected_os(argc, argv, BOOTM_STATE_OS_GO, 671 images, boot_fn); 672 673 /* Deal with any fallout */ 674 err: 675 if (iflag) 676 enable_interrupts(); 677 678 if (ret == BOOTM_ERR_UNIMPLEMENTED) 679 bootstage_error(BOOTSTAGE_ID_DECOMP_UNIMPL); 680 else if (ret == BOOTM_ERR_RESET) 681 do_reset(cmdtp, flag, argc, argv); 682 683 return ret; 684 } 685 686 #if defined(CONFIG_IMAGE_FORMAT_LEGACY) 687 /** 688 * image_get_kernel - verify legacy format kernel image 689 * @img_addr: in RAM address of the legacy format image to be verified 690 * @verify: data CRC verification flag 691 * 692 * image_get_kernel() verifies legacy image integrity and returns pointer to 693 * legacy image header if image verification was completed successfully. 694 * 695 * returns: 696 * pointer to a legacy image header if valid image was found 697 * otherwise return NULL 698 */ 699 static image_header_t *image_get_kernel(ulong img_addr, int verify) 700 { 701 image_header_t *hdr = (image_header_t *)img_addr; 702 703 if (!image_check_magic(hdr)) { 704 puts("Bad Magic Number\n"); 705 bootstage_error(BOOTSTAGE_ID_CHECK_MAGIC); 706 return NULL; 707 } 708 bootstage_mark(BOOTSTAGE_ID_CHECK_HEADER); 709 710 if (!image_check_hcrc(hdr)) { 711 puts("Bad Header Checksum\n"); 712 bootstage_error(BOOTSTAGE_ID_CHECK_HEADER); 713 return NULL; 714 } 715 716 bootstage_mark(BOOTSTAGE_ID_CHECK_CHECKSUM); 717 image_print_contents(hdr); 718 719 if (verify) { 720 puts(" Verifying Checksum ... "); 721 if (!image_check_dcrc(hdr)) { 722 printf("Bad Data CRC\n"); 723 bootstage_error(BOOTSTAGE_ID_CHECK_CHECKSUM); 724 return NULL; 725 } 726 puts("OK\n"); 727 } 728 bootstage_mark(BOOTSTAGE_ID_CHECK_ARCH); 729 730 if (!image_check_target_arch(hdr)) { 731 printf("Unsupported Architecture 0x%x\n", image_get_arch(hdr)); 732 bootstage_error(BOOTSTAGE_ID_CHECK_ARCH); 733 return NULL; 734 } 735 return hdr; 736 } 737 #endif 738 739 /** 740 * boot_get_kernel - find kernel image 741 * @os_data: pointer to a ulong variable, will hold os data start address 742 * @os_len: pointer to a ulong variable, will hold os data length 743 * 744 * boot_get_kernel() tries to find a kernel image, verifies its integrity 745 * and locates kernel data. 746 * 747 * returns: 748 * pointer to image header if valid image was found, plus kernel start 749 * address and length, otherwise NULL 750 */ 751 static const void *boot_get_kernel(cmd_tbl_t *cmdtp, int flag, int argc, 752 char * const argv[], bootm_headers_t *images, 753 ulong *os_data, ulong *os_len) 754 { 755 #if defined(CONFIG_IMAGE_FORMAT_LEGACY) 756 image_header_t *hdr; 757 #endif 758 ulong img_addr; 759 const void *buf; 760 const char *fit_uname_config = NULL; 761 const char *fit_uname_kernel = NULL; 762 #if defined(CONFIG_FIT) 763 int os_noffset; 764 #endif 765 766 img_addr = genimg_get_kernel_addr_fit(argc < 1 ? NULL : argv[0], 767 &fit_uname_config, 768 &fit_uname_kernel); 769 770 bootstage_mark(BOOTSTAGE_ID_CHECK_MAGIC); 771 772 /* copy from dataflash if needed */ 773 img_addr = genimg_get_image(img_addr); 774 775 /* check image type, for FIT images get FIT kernel node */ 776 *os_data = *os_len = 0; 777 buf = map_sysmem(img_addr, 0); 778 switch (genimg_get_format(buf)) { 779 #if defined(CONFIG_IMAGE_FORMAT_LEGACY) 780 case IMAGE_FORMAT_LEGACY: 781 printf("## Booting kernel from Legacy Image at %08lx ...\n", 782 img_addr); 783 hdr = image_get_kernel(img_addr, images->verify); 784 if (!hdr) 785 return NULL; 786 bootstage_mark(BOOTSTAGE_ID_CHECK_IMAGETYPE); 787 788 /* get os_data and os_len */ 789 switch (image_get_type(hdr)) { 790 case IH_TYPE_KERNEL: 791 case IH_TYPE_KERNEL_NOLOAD: 792 *os_data = image_get_data(hdr); 793 *os_len = image_get_data_size(hdr); 794 break; 795 case IH_TYPE_MULTI: 796 image_multi_getimg(hdr, 0, os_data, os_len); 797 break; 798 case IH_TYPE_STANDALONE: 799 *os_data = image_get_data(hdr); 800 *os_len = image_get_data_size(hdr); 801 break; 802 default: 803 printf("Wrong Image Type for %s command\n", 804 cmdtp->name); 805 bootstage_error(BOOTSTAGE_ID_CHECK_IMAGETYPE); 806 return NULL; 807 } 808 809 /* 810 * copy image header to allow for image overwrites during 811 * kernel decompression. 812 */ 813 memmove(&images->legacy_hdr_os_copy, hdr, 814 sizeof(image_header_t)); 815 816 /* save pointer to image header */ 817 images->legacy_hdr_os = hdr; 818 819 images->legacy_hdr_valid = 1; 820 bootstage_mark(BOOTSTAGE_ID_DECOMP_IMAGE); 821 break; 822 #endif 823 #if defined(CONFIG_FIT) 824 case IMAGE_FORMAT_FIT: 825 os_noffset = fit_image_load(images, img_addr, 826 &fit_uname_kernel, &fit_uname_config, 827 IH_ARCH_DEFAULT, IH_TYPE_KERNEL, 828 BOOTSTAGE_ID_FIT_KERNEL_START, 829 FIT_LOAD_IGNORED, os_data, os_len); 830 if (os_noffset < 0) 831 return NULL; 832 833 images->fit_hdr_os = map_sysmem(img_addr, 0); 834 images->fit_uname_os = fit_uname_kernel; 835 images->fit_uname_cfg = fit_uname_config; 836 images->fit_noffset_os = os_noffset; 837 break; 838 #endif 839 #ifdef CONFIG_ANDROID_BOOT_IMAGE 840 case IMAGE_FORMAT_ANDROID: 841 printf("## Booting Android Image at 0x%08lx ...\n", img_addr); 842 if (android_image_get_kernel(buf, images->verify, 843 os_data, os_len)) 844 return NULL; 845 break; 846 #endif 847 default: 848 printf("Wrong Image Format for %s command\n", cmdtp->name); 849 bootstage_error(BOOTSTAGE_ID_FIT_KERNEL_INFO); 850 return NULL; 851 } 852 853 debug(" kernel data at 0x%08lx, len = 0x%08lx (%ld)\n", 854 *os_data, *os_len, *os_len); 855 856 return buf; 857 } 858 #else /* USE_HOSTCC */ 859 860 void memmove_wd(void *to, void *from, size_t len, ulong chunksz) 861 { 862 memmove(to, from, len); 863 } 864 865 static int bootm_host_load_image(const void *fit, int req_image_type) 866 { 867 const char *fit_uname_config = NULL; 868 ulong data, len; 869 bootm_headers_t images; 870 int noffset; 871 ulong load_end; 872 uint8_t image_type; 873 uint8_t imape_comp; 874 void *load_buf; 875 int ret; 876 877 memset(&images, '\0', sizeof(images)); 878 images.verify = 1; 879 noffset = fit_image_load(&images, (ulong)fit, 880 NULL, &fit_uname_config, 881 IH_ARCH_DEFAULT, req_image_type, -1, 882 FIT_LOAD_IGNORED, &data, &len); 883 if (noffset < 0) 884 return noffset; 885 if (fit_image_get_type(fit, noffset, &image_type)) { 886 puts("Can't get image type!\n"); 887 return -EINVAL; 888 } 889 890 if (fit_image_get_comp(fit, noffset, &imape_comp)) { 891 puts("Can't get image compression!\n"); 892 return -EINVAL; 893 } 894 895 /* Allow the image to expand by a factor of 4, should be safe */ 896 load_buf = malloc((1 << 20) + len * 4); 897 ret = bootm_decomp_image(imape_comp, 0, data, image_type, load_buf, 898 (void *)data, len, CONFIG_SYS_BOOTM_LEN, 899 &load_end); 900 free(load_buf); 901 902 if (ret && ret != BOOTM_ERR_UNIMPLEMENTED) 903 return ret; 904 905 return 0; 906 } 907 908 int bootm_host_load_images(const void *fit, int cfg_noffset) 909 { 910 static uint8_t image_types[] = { 911 IH_TYPE_KERNEL, 912 IH_TYPE_FLATDT, 913 IH_TYPE_RAMDISK, 914 }; 915 int err = 0; 916 int i; 917 918 for (i = 0; i < ARRAY_SIZE(image_types); i++) { 919 int ret; 920 921 ret = bootm_host_load_image(fit, image_types[i]); 922 if (!err && ret && ret != -ENOENT) 923 err = ret; 924 } 925 926 /* Return the first error we found */ 927 return err; 928 } 929 930 #endif /* ndef USE_HOSTCC */ 931