1 /* 2 * Driver for NAND support, Rick Bronson 3 * borrowed heavily from: 4 * (c) 1999 Machine Vision Holdings, Inc. 5 * (c) 1999, 2000 David Woodhouse <dwmw2@infradead.org> 6 * 7 * Ported 'dynenv' to 'nand env.oob' command 8 * (C) 2010 Nanometrics, Inc. 9 * 'dynenv' -- Dynamic environment offset in NAND OOB 10 * (C) Copyright 2006-2007 OpenMoko, Inc. 11 * Added 16-bit nand support 12 * (C) 2004 Texas Instruments 13 * 14 * Copyright 2010, 2012 Freescale Semiconductor 15 * The portions of this file whose copyright is held by Freescale and which 16 * are not considered a derived work of GPL v2-only code may be distributed 17 * and/or modified under the terms of the GNU General Public License as 18 * published by the Free Software Foundation; either version 2 of the 19 * License, or (at your option) any later version. 20 */ 21 22 #include <common.h> 23 #include <linux/mtd/mtd.h> 24 #include <command.h> 25 #include <console.h> 26 #include <watchdog.h> 27 #include <malloc.h> 28 #include <asm/byteorder.h> 29 #include <jffs2/jffs2.h> 30 #include <nand.h> 31 32 #if defined(CONFIG_CMD_MTDPARTS) 33 34 /* partition handling routines */ 35 int mtdparts_init(void); 36 int id_parse(const char *id, const char **ret_id, u8 *dev_type, u8 *dev_num); 37 int find_dev_and_part(const char *id, struct mtd_device **dev, 38 u8 *part_num, struct part_info **part); 39 #endif 40 41 static int nand_dump(nand_info_t *nand, ulong off, int only_oob, int repeat) 42 { 43 int i; 44 u_char *datbuf, *oobbuf, *p; 45 static loff_t last; 46 int ret = 0; 47 48 if (repeat) 49 off = last + nand->writesize; 50 51 last = off; 52 53 datbuf = memalign(ARCH_DMA_MINALIGN, nand->writesize); 54 if (!datbuf) { 55 puts("No memory for page buffer\n"); 56 return 1; 57 } 58 59 oobbuf = memalign(ARCH_DMA_MINALIGN, nand->oobsize); 60 if (!oobbuf) { 61 puts("No memory for page buffer\n"); 62 ret = 1; 63 goto free_dat; 64 } 65 off &= ~(nand->writesize - 1); 66 loff_t addr = (loff_t) off; 67 struct mtd_oob_ops ops; 68 memset(&ops, 0, sizeof(ops)); 69 ops.datbuf = datbuf; 70 ops.oobbuf = oobbuf; 71 ops.len = nand->writesize; 72 ops.ooblen = nand->oobsize; 73 ops.mode = MTD_OPS_RAW; 74 i = mtd_read_oob(nand, addr, &ops); 75 if (i < 0) { 76 printf("Error (%d) reading page %08lx\n", i, off); 77 ret = 1; 78 goto free_all; 79 } 80 printf("Page %08lx dump:\n", off); 81 82 if (!only_oob) { 83 i = nand->writesize >> 4; 84 p = datbuf; 85 86 while (i--) { 87 printf("\t%02x %02x %02x %02x %02x %02x %02x %02x" 88 " %02x %02x %02x %02x %02x %02x %02x %02x\n", 89 p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7], 90 p[8], p[9], p[10], p[11], p[12], p[13], p[14], 91 p[15]); 92 p += 16; 93 } 94 } 95 96 puts("OOB:\n"); 97 i = nand->oobsize >> 3; 98 p = oobbuf; 99 while (i--) { 100 printf("\t%02x %02x %02x %02x %02x %02x %02x %02x\n", 101 p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7]); 102 p += 8; 103 } 104 105 free_all: 106 free(oobbuf); 107 free_dat: 108 free(datbuf); 109 110 return ret; 111 } 112 113 /* ------------------------------------------------------------------------- */ 114 115 static int set_dev(int dev) 116 { 117 if (dev < 0 || dev >= CONFIG_SYS_MAX_NAND_DEVICE || 118 !nand_info[dev].name) { 119 puts("No such device\n"); 120 return -1; 121 } 122 123 if (nand_curr_device == dev) 124 return 0; 125 126 printf("Device %d: %s", dev, nand_info[dev].name); 127 puts("... is now current device\n"); 128 nand_curr_device = dev; 129 130 #ifdef CONFIG_SYS_NAND_SELECT_DEVICE 131 board_nand_select_device(nand_info[dev].priv, dev); 132 #endif 133 134 return 0; 135 } 136 137 #ifdef CONFIG_CMD_NAND_LOCK_UNLOCK 138 static void print_status(ulong start, ulong end, ulong erasesize, int status) 139 { 140 /* 141 * Micron NAND flash (e.g. MT29F4G08ABADAH4) BLOCK LOCK READ STATUS is 142 * not the same as others. Instead of bit 1 being lock, it is 143 * #lock_tight. To make the driver support either format, ignore bit 1 144 * and use only bit 0 and bit 2. 145 */ 146 printf("%08lx - %08lx: %08lx blocks %s%s%s\n", 147 start, 148 end - 1, 149 (end - start) / erasesize, 150 ((status & NAND_LOCK_STATUS_TIGHT) ? "TIGHT " : ""), 151 (!(status & NAND_LOCK_STATUS_UNLOCK) ? "LOCK " : ""), 152 ((status & NAND_LOCK_STATUS_UNLOCK) ? "UNLOCK " : "")); 153 } 154 155 static void do_nand_status(nand_info_t *nand) 156 { 157 ulong block_start = 0; 158 ulong off; 159 int last_status = -1; 160 161 struct nand_chip *nand_chip = nand->priv; 162 /* check the WP bit */ 163 nand_chip->cmdfunc(nand, NAND_CMD_STATUS, -1, -1); 164 printf("device is %swrite protected\n", 165 (nand_chip->read_byte(nand) & 0x80 ? 166 "NOT " : "")); 167 168 for (off = 0; off < nand->size; off += nand->erasesize) { 169 int s = nand_get_lock_status(nand, off); 170 171 /* print message only if status has changed */ 172 if (s != last_status && off != 0) { 173 print_status(block_start, off, nand->erasesize, 174 last_status); 175 block_start = off; 176 } 177 last_status = s; 178 } 179 /* Print the last block info */ 180 print_status(block_start, off, nand->erasesize, last_status); 181 } 182 #endif 183 184 #ifdef CONFIG_ENV_OFFSET_OOB 185 unsigned long nand_env_oob_offset; 186 187 int do_nand_env_oob(cmd_tbl_t *cmdtp, int argc, char *const argv[]) 188 { 189 int ret; 190 uint32_t oob_buf[ENV_OFFSET_SIZE/sizeof(uint32_t)]; 191 nand_info_t *nand = &nand_info[0]; 192 char *cmd = argv[1]; 193 194 if (CONFIG_SYS_MAX_NAND_DEVICE == 0 || !nand->name) { 195 puts("no devices available\n"); 196 return 1; 197 } 198 199 set_dev(0); 200 201 if (!strcmp(cmd, "get")) { 202 ret = get_nand_env_oob(nand, &nand_env_oob_offset); 203 if (ret) 204 return 1; 205 206 printf("0x%08lx\n", nand_env_oob_offset); 207 } else if (!strcmp(cmd, "set")) { 208 loff_t addr; 209 loff_t maxsize; 210 struct mtd_oob_ops ops; 211 int idx = 0; 212 213 if (argc < 3) 214 goto usage; 215 216 /* We don't care about size, or maxsize. */ 217 if (mtd_arg_off(argv[2], &idx, &addr, &maxsize, &maxsize, 218 MTD_DEV_TYPE_NAND, nand_info[idx].size)) { 219 puts("Offset or partition name expected\n"); 220 return 1; 221 } 222 if (set_dev(idx)) { 223 puts("Offset or partition name expected\n"); 224 return 1; 225 } 226 227 if (idx != 0) { 228 puts("Partition not on first NAND device\n"); 229 return 1; 230 } 231 232 if (nand->oobavail < ENV_OFFSET_SIZE) { 233 printf("Insufficient available OOB bytes:\n" 234 "%d OOB bytes available but %d required for " 235 "env.oob support\n", 236 nand->oobavail, ENV_OFFSET_SIZE); 237 return 1; 238 } 239 240 if ((addr & (nand->erasesize - 1)) != 0) { 241 printf("Environment offset must be block-aligned\n"); 242 return 1; 243 } 244 245 ops.datbuf = NULL; 246 ops.mode = MTD_OOB_AUTO; 247 ops.ooboffs = 0; 248 ops.ooblen = ENV_OFFSET_SIZE; 249 ops.oobbuf = (void *) oob_buf; 250 251 oob_buf[0] = ENV_OOB_MARKER; 252 oob_buf[1] = addr / nand->erasesize; 253 254 ret = nand->write_oob(nand, ENV_OFFSET_SIZE, &ops); 255 if (ret) { 256 printf("Error writing OOB block 0\n"); 257 return ret; 258 } 259 260 ret = get_nand_env_oob(nand, &nand_env_oob_offset); 261 if (ret) { 262 printf("Error reading env offset in OOB\n"); 263 return ret; 264 } 265 266 if (addr != nand_env_oob_offset) { 267 printf("Verification of env offset in OOB failed: " 268 "0x%08llx expected but got 0x%08lx\n", 269 (unsigned long long)addr, nand_env_oob_offset); 270 return 1; 271 } 272 } else { 273 goto usage; 274 } 275 276 return ret; 277 278 usage: 279 return CMD_RET_USAGE; 280 } 281 282 #endif 283 284 static void nand_print_and_set_info(int idx) 285 { 286 nand_info_t *nand = &nand_info[idx]; 287 struct nand_chip *chip = nand->priv; 288 289 printf("Device %d: ", idx); 290 if (chip->numchips > 1) 291 printf("%dx ", chip->numchips); 292 printf("%s, sector size %u KiB\n", 293 nand->name, nand->erasesize >> 10); 294 printf(" Page size %8d b\n", nand->writesize); 295 printf(" OOB size %8d b\n", nand->oobsize); 296 printf(" Erase size %8d b\n", nand->erasesize); 297 printf(" subpagesize %8d b\n", chip->subpagesize); 298 printf(" options 0x%8x\n", chip->options); 299 printf(" bbt options 0x%8x\n", chip->bbt_options); 300 301 /* Set geometry info */ 302 setenv_hex("nand_writesize", nand->writesize); 303 setenv_hex("nand_oobsize", nand->oobsize); 304 setenv_hex("nand_erasesize", nand->erasesize); 305 } 306 307 static int raw_access(nand_info_t *nand, ulong addr, loff_t off, ulong count, 308 int read) 309 { 310 int ret = 0; 311 312 while (count--) { 313 /* Raw access */ 314 mtd_oob_ops_t ops = { 315 .datbuf = (u8 *)addr, 316 .oobbuf = ((u8 *)addr) + nand->writesize, 317 .len = nand->writesize, 318 .ooblen = nand->oobsize, 319 .mode = MTD_OPS_RAW 320 }; 321 322 if (read) { 323 ret = mtd_read_oob(nand, off, &ops); 324 } else { 325 ret = mtd_write_oob(nand, off, &ops); 326 if (!ret) 327 ret = nand_verify_page_oob(nand, &ops, off); 328 } 329 330 if (ret) { 331 printf("%s: error at offset %llx, ret %d\n", 332 __func__, (long long)off, ret); 333 break; 334 } 335 336 addr += nand->writesize + nand->oobsize; 337 off += nand->writesize; 338 } 339 340 return ret; 341 } 342 343 /* Adjust a chip/partition size down for bad blocks so we don't 344 * read/write past the end of a chip/partition by accident. 345 */ 346 static void adjust_size_for_badblocks(loff_t *size, loff_t offset, int dev) 347 { 348 /* We grab the nand info object here fresh because this is usually 349 * called after arg_off_size() which can change the value of dev. 350 */ 351 nand_info_t *nand = &nand_info[dev]; 352 loff_t maxoffset = offset + *size; 353 int badblocks = 0; 354 355 /* count badblocks in NAND from offset to offset + size */ 356 for (; offset < maxoffset; offset += nand->erasesize) { 357 if (nand_block_isbad(nand, offset)) 358 badblocks++; 359 } 360 /* adjust size if any bad blocks found */ 361 if (badblocks) { 362 *size -= badblocks * nand->erasesize; 363 printf("size adjusted to 0x%llx (%d bad blocks)\n", 364 (unsigned long long)*size, badblocks); 365 } 366 } 367 368 static int do_nand(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) 369 { 370 int i, ret = 0; 371 ulong addr; 372 loff_t off, size, maxsize; 373 char *cmd, *s; 374 nand_info_t *nand; 375 #ifdef CONFIG_SYS_NAND_QUIET 376 int quiet = CONFIG_SYS_NAND_QUIET; 377 #else 378 int quiet = 0; 379 #endif 380 const char *quiet_str = getenv("quiet"); 381 int dev = nand_curr_device; 382 int repeat = flag & CMD_FLAG_REPEAT; 383 384 /* at least two arguments please */ 385 if (argc < 2) 386 goto usage; 387 388 if (quiet_str) 389 quiet = simple_strtoul(quiet_str, NULL, 0) != 0; 390 391 cmd = argv[1]; 392 393 /* Only "dump" is repeatable. */ 394 if (repeat && strcmp(cmd, "dump")) 395 return 0; 396 397 if (strcmp(cmd, "info") == 0) { 398 399 putc('\n'); 400 for (i = 0; i < CONFIG_SYS_MAX_NAND_DEVICE; i++) { 401 if (nand_info[i].name) 402 nand_print_and_set_info(i); 403 } 404 return 0; 405 } 406 407 if (strcmp(cmd, "device") == 0) { 408 if (argc < 3) { 409 putc('\n'); 410 if (dev < 0 || dev >= CONFIG_SYS_MAX_NAND_DEVICE) 411 puts("no devices available\n"); 412 else 413 nand_print_and_set_info(dev); 414 return 0; 415 } 416 417 dev = (int)simple_strtoul(argv[2], NULL, 10); 418 set_dev(dev); 419 420 return 0; 421 } 422 423 #ifdef CONFIG_ENV_OFFSET_OOB 424 /* this command operates only on the first nand device */ 425 if (strcmp(cmd, "env.oob") == 0) 426 return do_nand_env_oob(cmdtp, argc - 1, argv + 1); 427 #endif 428 429 /* The following commands operate on the current device, unless 430 * overridden by a partition specifier. Note that if somehow the 431 * current device is invalid, it will have to be changed to a valid 432 * one before these commands can run, even if a partition specifier 433 * for another device is to be used. 434 */ 435 if (dev < 0 || dev >= CONFIG_SYS_MAX_NAND_DEVICE || 436 !nand_info[dev].name) { 437 puts("\nno devices available\n"); 438 return 1; 439 } 440 nand = &nand_info[dev]; 441 442 if (strcmp(cmd, "bad") == 0) { 443 printf("\nDevice %d bad blocks:\n", dev); 444 for (off = 0; off < nand->size; off += nand->erasesize) 445 if (nand_block_isbad(nand, off)) 446 printf(" %08llx\n", (unsigned long long)off); 447 return 0; 448 } 449 450 /* 451 * Syntax is: 452 * 0 1 2 3 4 453 * nand erase [clean] [off size] 454 */ 455 if (strncmp(cmd, "erase", 5) == 0 || strncmp(cmd, "scrub", 5) == 0) { 456 nand_erase_options_t opts; 457 /* "clean" at index 2 means request to write cleanmarker */ 458 int clean = argc > 2 && !strcmp("clean", argv[2]); 459 int scrub_yes = argc > 2 && !strcmp("-y", argv[2]); 460 int o = (clean || scrub_yes) ? 3 : 2; 461 int scrub = !strncmp(cmd, "scrub", 5); 462 int spread = 0; 463 int args = 2; 464 const char *scrub_warn = 465 "Warning: " 466 "scrub option will erase all factory set bad blocks!\n" 467 " " 468 "There is no reliable way to recover them.\n" 469 " " 470 "Use this command only for testing purposes if you\n" 471 " " 472 "are sure of what you are doing!\n" 473 "\nReally scrub this NAND flash? <y/N>\n"; 474 475 if (cmd[5] != 0) { 476 if (!strcmp(&cmd[5], ".spread")) { 477 spread = 1; 478 } else if (!strcmp(&cmd[5], ".part")) { 479 args = 1; 480 } else if (!strcmp(&cmd[5], ".chip")) { 481 args = 0; 482 } else { 483 goto usage; 484 } 485 } 486 487 /* 488 * Don't allow missing arguments to cause full chip/partition 489 * erases -- easy to do accidentally, e.g. with a misspelled 490 * variable name. 491 */ 492 if (argc != o + args) 493 goto usage; 494 495 printf("\nNAND %s: ", cmd); 496 /* skip first two or three arguments, look for offset and size */ 497 if (mtd_arg_off_size(argc - o, argv + o, &dev, &off, &size, 498 &maxsize, MTD_DEV_TYPE_NAND, 499 nand_info[dev].size) != 0) 500 return 1; 501 502 if (set_dev(dev)) 503 return 1; 504 505 nand = &nand_info[dev]; 506 507 memset(&opts, 0, sizeof(opts)); 508 opts.offset = off; 509 opts.length = size; 510 opts.jffs2 = clean; 511 opts.quiet = quiet; 512 opts.spread = spread; 513 514 if (scrub) { 515 if (scrub_yes) { 516 opts.scrub = 1; 517 } else { 518 puts(scrub_warn); 519 if (confirm_yesno()) { 520 opts.scrub = 1; 521 } else { 522 puts("scrub aborted\n"); 523 return 1; 524 } 525 } 526 } 527 ret = nand_erase_opts(nand, &opts); 528 printf("%s\n", ret ? "ERROR" : "OK"); 529 530 return ret == 0 ? 0 : 1; 531 } 532 533 if (strncmp(cmd, "dump", 4) == 0) { 534 if (argc < 3) 535 goto usage; 536 537 off = (int)simple_strtoul(argv[2], NULL, 16); 538 ret = nand_dump(nand, off, !strcmp(&cmd[4], ".oob"), repeat); 539 540 return ret == 0 ? 1 : 0; 541 } 542 543 if (strncmp(cmd, "read", 4) == 0 || strncmp(cmd, "write", 5) == 0) { 544 size_t rwsize; 545 ulong pagecount = 1; 546 int read; 547 int raw = 0; 548 549 if (argc < 4) 550 goto usage; 551 552 addr = (ulong)simple_strtoul(argv[2], NULL, 16); 553 554 read = strncmp(cmd, "read", 4) == 0; /* 1 = read, 0 = write */ 555 printf("\nNAND %s: ", read ? "read" : "write"); 556 557 s = strchr(cmd, '.'); 558 559 if (s && !strcmp(s, ".raw")) { 560 raw = 1; 561 562 if (mtd_arg_off(argv[3], &dev, &off, &size, &maxsize, 563 MTD_DEV_TYPE_NAND, 564 nand_info[dev].size)) 565 return 1; 566 567 if (set_dev(dev)) 568 return 1; 569 570 nand = &nand_info[dev]; 571 572 if (argc > 4 && !str2long(argv[4], &pagecount)) { 573 printf("'%s' is not a number\n", argv[4]); 574 return 1; 575 } 576 577 if (pagecount * nand->writesize > size) { 578 puts("Size exceeds partition or device limit\n"); 579 return -1; 580 } 581 582 rwsize = pagecount * (nand->writesize + nand->oobsize); 583 } else { 584 if (mtd_arg_off_size(argc - 3, argv + 3, &dev, &off, 585 &size, &maxsize, 586 MTD_DEV_TYPE_NAND, 587 nand_info[dev].size) != 0) 588 return 1; 589 590 if (set_dev(dev)) 591 return 1; 592 593 /* size is unspecified */ 594 if (argc < 5) 595 adjust_size_for_badblocks(&size, off, dev); 596 rwsize = size; 597 } 598 599 nand = &nand_info[dev]; 600 601 if (!s || !strcmp(s, ".jffs2") || 602 !strcmp(s, ".e") || !strcmp(s, ".i")) { 603 if (read) 604 ret = nand_read_skip_bad(nand, off, &rwsize, 605 NULL, maxsize, 606 (u_char *)addr); 607 else 608 ret = nand_write_skip_bad(nand, off, &rwsize, 609 NULL, maxsize, 610 (u_char *)addr, 611 WITH_WR_VERIFY); 612 #ifdef CONFIG_CMD_NAND_TRIMFFS 613 } else if (!strcmp(s, ".trimffs")) { 614 if (read) { 615 printf("Unknown nand command suffix '%s'\n", s); 616 return 1; 617 } 618 ret = nand_write_skip_bad(nand, off, &rwsize, NULL, 619 maxsize, (u_char *)addr, 620 WITH_DROP_FFS | WITH_WR_VERIFY); 621 #endif 622 } else if (!strcmp(s, ".oob")) { 623 /* out-of-band data */ 624 mtd_oob_ops_t ops = { 625 .oobbuf = (u8 *)addr, 626 .ooblen = rwsize, 627 .mode = MTD_OPS_RAW 628 }; 629 630 if (read) 631 ret = mtd_read_oob(nand, off, &ops); 632 else 633 ret = mtd_write_oob(nand, off, &ops); 634 } else if (raw) { 635 ret = raw_access(nand, addr, off, pagecount, read); 636 } else { 637 printf("Unknown nand command suffix '%s'.\n", s); 638 return 1; 639 } 640 641 printf(" %zu bytes %s: %s\n", rwsize, 642 read ? "read" : "written", ret ? "ERROR" : "OK"); 643 644 return ret == 0 ? 0 : 1; 645 } 646 647 #ifdef CONFIG_CMD_NAND_TORTURE 648 if (strcmp(cmd, "torture") == 0) { 649 if (argc < 3) 650 goto usage; 651 652 if (!str2off(argv[2], &off)) { 653 puts("Offset is not a valid number\n"); 654 return 1; 655 } 656 657 printf("\nNAND torture: device %d offset 0x%llx size 0x%x\n", 658 dev, off, nand->erasesize); 659 ret = nand_torture(nand, off); 660 printf(" %s\n", ret ? "Failed" : "Passed"); 661 662 return ret == 0 ? 0 : 1; 663 } 664 #endif 665 666 if (strcmp(cmd, "markbad") == 0) { 667 argc -= 2; 668 argv += 2; 669 670 if (argc <= 0) 671 goto usage; 672 673 while (argc > 0) { 674 addr = simple_strtoul(*argv, NULL, 16); 675 676 if (mtd_block_markbad(nand, addr)) { 677 printf("block 0x%08lx NOT marked " 678 "as bad! ERROR %d\n", 679 addr, ret); 680 ret = 1; 681 } else { 682 printf("block 0x%08lx successfully " 683 "marked as bad\n", 684 addr); 685 } 686 --argc; 687 ++argv; 688 } 689 return ret; 690 } 691 692 if (strcmp(cmd, "biterr") == 0) { 693 /* todo */ 694 return 1; 695 } 696 697 #ifdef CONFIG_CMD_NAND_LOCK_UNLOCK 698 if (strcmp(cmd, "lock") == 0) { 699 int tight = 0; 700 int status = 0; 701 if (argc == 3) { 702 if (!strcmp("tight", argv[2])) 703 tight = 1; 704 if (!strcmp("status", argv[2])) 705 status = 1; 706 } 707 if (status) { 708 do_nand_status(nand); 709 } else { 710 if (!nand_lock(nand, tight)) { 711 puts("NAND flash successfully locked\n"); 712 } else { 713 puts("Error locking NAND flash\n"); 714 return 1; 715 } 716 } 717 return 0; 718 } 719 720 if (strncmp(cmd, "unlock", 5) == 0) { 721 int allexcept = 0; 722 723 s = strchr(cmd, '.'); 724 725 if (s && !strcmp(s, ".allexcept")) 726 allexcept = 1; 727 728 if (mtd_arg_off_size(argc - 2, argv + 2, &dev, &off, &size, 729 &maxsize, MTD_DEV_TYPE_NAND, 730 nand_info[dev].size) < 0) 731 return 1; 732 733 if (set_dev(dev)) 734 return 1; 735 736 if (!nand_unlock(&nand_info[dev], off, size, allexcept)) { 737 puts("NAND flash successfully unlocked\n"); 738 } else { 739 puts("Error unlocking NAND flash, " 740 "write and erase will probably fail\n"); 741 return 1; 742 } 743 return 0; 744 } 745 #endif 746 747 usage: 748 return CMD_RET_USAGE; 749 } 750 751 #ifdef CONFIG_SYS_LONGHELP 752 static char nand_help_text[] = 753 "info - show available NAND devices\n" 754 "nand device [dev] - show or set current device\n" 755 "nand read - addr off|partition size\n" 756 "nand write - addr off|partition size\n" 757 " read/write 'size' bytes starting at offset 'off'\n" 758 " to/from memory address 'addr', skipping bad blocks.\n" 759 "nand read.raw - addr off|partition [count]\n" 760 "nand write.raw - addr off|partition [count]\n" 761 " Use read.raw/write.raw to avoid ECC and access the flash as-is.\n" 762 #ifdef CONFIG_CMD_NAND_TRIMFFS 763 "nand write.trimffs - addr off|partition size\n" 764 " write 'size' bytes starting at offset 'off' from memory address\n" 765 " 'addr', skipping bad blocks and dropping any pages at the end\n" 766 " of eraseblocks that contain only 0xFF\n" 767 #endif 768 "nand erase[.spread] [clean] off size - erase 'size' bytes " 769 "from offset 'off'\n" 770 " With '.spread', erase enough for given file size, otherwise,\n" 771 " 'size' includes skipped bad blocks.\n" 772 "nand erase.part [clean] partition - erase entire mtd partition'\n" 773 "nand erase.chip [clean] - erase entire chip'\n" 774 "nand bad - show bad blocks\n" 775 "nand dump[.oob] off - dump page\n" 776 #ifdef CONFIG_CMD_NAND_TORTURE 777 "nand torture off - torture block at offset\n" 778 #endif 779 "nand scrub [-y] off size | scrub.part partition | scrub.chip\n" 780 " really clean NAND erasing bad blocks (UNSAFE)\n" 781 "nand markbad off [...] - mark bad block(s) at offset (UNSAFE)\n" 782 "nand biterr off - make a bit error at offset (UNSAFE)" 783 #ifdef CONFIG_CMD_NAND_LOCK_UNLOCK 784 "\n" 785 "nand lock [tight] [status]\n" 786 " bring nand to lock state or display locked pages\n" 787 "nand unlock[.allexcept] [offset] [size] - unlock section" 788 #endif 789 #ifdef CONFIG_ENV_OFFSET_OOB 790 "\n" 791 "nand env.oob - environment offset in OOB of block 0 of" 792 " first device.\n" 793 "nand env.oob set off|partition - set enviromnent offset\n" 794 "nand env.oob get - get environment offset" 795 #endif 796 ""; 797 #endif 798 799 U_BOOT_CMD( 800 nand, CONFIG_SYS_MAXARGS, 1, do_nand, 801 "NAND sub-system", nand_help_text 802 ); 803 804 static int nand_load_image(cmd_tbl_t *cmdtp, nand_info_t *nand, 805 ulong offset, ulong addr, char *cmd) 806 { 807 int r; 808 char *s; 809 size_t cnt; 810 #if defined(CONFIG_IMAGE_FORMAT_LEGACY) 811 image_header_t *hdr; 812 #endif 813 #if defined(CONFIG_FIT) 814 const void *fit_hdr = NULL; 815 #endif 816 817 s = strchr(cmd, '.'); 818 if (s != NULL && 819 (strcmp(s, ".jffs2") && strcmp(s, ".e") && strcmp(s, ".i"))) { 820 printf("Unknown nand load suffix '%s'\n", s); 821 bootstage_error(BOOTSTAGE_ID_NAND_SUFFIX); 822 return 1; 823 } 824 825 printf("\nLoading from %s, offset 0x%lx\n", nand->name, offset); 826 827 cnt = nand->writesize; 828 r = nand_read_skip_bad(nand, offset, &cnt, NULL, nand->size, 829 (u_char *)addr); 830 if (r) { 831 puts("** Read error\n"); 832 bootstage_error(BOOTSTAGE_ID_NAND_HDR_READ); 833 return 1; 834 } 835 bootstage_mark(BOOTSTAGE_ID_NAND_HDR_READ); 836 837 switch (genimg_get_format ((void *)addr)) { 838 #if defined(CONFIG_IMAGE_FORMAT_LEGACY) 839 case IMAGE_FORMAT_LEGACY: 840 hdr = (image_header_t *)addr; 841 842 bootstage_mark(BOOTSTAGE_ID_NAND_TYPE); 843 image_print_contents (hdr); 844 845 cnt = image_get_image_size (hdr); 846 break; 847 #endif 848 #if defined(CONFIG_FIT) 849 case IMAGE_FORMAT_FIT: 850 fit_hdr = (const void *)addr; 851 puts ("Fit image detected...\n"); 852 853 cnt = fit_get_size (fit_hdr); 854 break; 855 #endif 856 default: 857 bootstage_error(BOOTSTAGE_ID_NAND_TYPE); 858 puts ("** Unknown image type\n"); 859 return 1; 860 } 861 bootstage_mark(BOOTSTAGE_ID_NAND_TYPE); 862 863 r = nand_read_skip_bad(nand, offset, &cnt, NULL, nand->size, 864 (u_char *)addr); 865 if (r) { 866 puts("** Read error\n"); 867 bootstage_error(BOOTSTAGE_ID_NAND_READ); 868 return 1; 869 } 870 bootstage_mark(BOOTSTAGE_ID_NAND_READ); 871 872 #if defined(CONFIG_FIT) 873 /* This cannot be done earlier, we need complete FIT image in RAM first */ 874 if (genimg_get_format ((void *)addr) == IMAGE_FORMAT_FIT) { 875 if (!fit_check_format (fit_hdr)) { 876 bootstage_error(BOOTSTAGE_ID_NAND_FIT_READ); 877 puts ("** Bad FIT image format\n"); 878 return 1; 879 } 880 bootstage_mark(BOOTSTAGE_ID_NAND_FIT_READ_OK); 881 fit_print_contents (fit_hdr); 882 } 883 #endif 884 885 /* Loading ok, update default load address */ 886 887 load_addr = addr; 888 889 return bootm_maybe_autostart(cmdtp, cmd); 890 } 891 892 static int do_nandboot(cmd_tbl_t *cmdtp, int flag, int argc, 893 char * const argv[]) 894 { 895 char *boot_device = NULL; 896 int idx; 897 ulong addr, offset = 0; 898 #if defined(CONFIG_CMD_MTDPARTS) 899 struct mtd_device *dev; 900 struct part_info *part; 901 u8 pnum; 902 903 if (argc >= 2) { 904 char *p = (argc == 2) ? argv[1] : argv[2]; 905 if (!(str2long(p, &addr)) && (mtdparts_init() == 0) && 906 (find_dev_and_part(p, &dev, &pnum, &part) == 0)) { 907 if (dev->id->type != MTD_DEV_TYPE_NAND) { 908 puts("Not a NAND device\n"); 909 return 1; 910 } 911 if (argc > 3) 912 goto usage; 913 if (argc == 3) 914 addr = simple_strtoul(argv[1], NULL, 16); 915 else 916 addr = CONFIG_SYS_LOAD_ADDR; 917 return nand_load_image(cmdtp, &nand_info[dev->id->num], 918 part->offset, addr, argv[0]); 919 } 920 } 921 #endif 922 923 bootstage_mark(BOOTSTAGE_ID_NAND_PART); 924 switch (argc) { 925 case 1: 926 addr = CONFIG_SYS_LOAD_ADDR; 927 boot_device = getenv("bootdevice"); 928 break; 929 case 2: 930 addr = simple_strtoul(argv[1], NULL, 16); 931 boot_device = getenv("bootdevice"); 932 break; 933 case 3: 934 addr = simple_strtoul(argv[1], NULL, 16); 935 boot_device = argv[2]; 936 break; 937 case 4: 938 addr = simple_strtoul(argv[1], NULL, 16); 939 boot_device = argv[2]; 940 offset = simple_strtoul(argv[3], NULL, 16); 941 break; 942 default: 943 #if defined(CONFIG_CMD_MTDPARTS) 944 usage: 945 #endif 946 bootstage_error(BOOTSTAGE_ID_NAND_SUFFIX); 947 return CMD_RET_USAGE; 948 } 949 bootstage_mark(BOOTSTAGE_ID_NAND_SUFFIX); 950 951 if (!boot_device) { 952 puts("\n** No boot device **\n"); 953 bootstage_error(BOOTSTAGE_ID_NAND_BOOT_DEVICE); 954 return 1; 955 } 956 bootstage_mark(BOOTSTAGE_ID_NAND_BOOT_DEVICE); 957 958 idx = simple_strtoul(boot_device, NULL, 16); 959 960 if (idx < 0 || idx >= CONFIG_SYS_MAX_NAND_DEVICE || !nand_info[idx].name) { 961 printf("\n** Device %d not available\n", idx); 962 bootstage_error(BOOTSTAGE_ID_NAND_AVAILABLE); 963 return 1; 964 } 965 bootstage_mark(BOOTSTAGE_ID_NAND_AVAILABLE); 966 967 return nand_load_image(cmdtp, &nand_info[idx], offset, addr, argv[0]); 968 } 969 970 U_BOOT_CMD(nboot, 4, 1, do_nandboot, 971 "boot from NAND device", 972 "[partition] | [[[loadAddr] dev] offset]" 973 ); 974