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(struct mtd_info *mtd, ulong off, int only_oob, 42 int repeat) 43 { 44 int i; 45 u_char *datbuf, *oobbuf, *p; 46 static loff_t last; 47 int ret = 0; 48 49 if (repeat) 50 off = last + mtd->writesize; 51 52 last = off; 53 54 datbuf = memalign(ARCH_DMA_MINALIGN, mtd->writesize); 55 if (!datbuf) { 56 puts("No memory for page buffer\n"); 57 return 1; 58 } 59 60 oobbuf = memalign(ARCH_DMA_MINALIGN, mtd->oobsize); 61 if (!oobbuf) { 62 puts("No memory for page buffer\n"); 63 ret = 1; 64 goto free_dat; 65 } 66 off &= ~(mtd->writesize - 1); 67 loff_t addr = (loff_t) off; 68 struct mtd_oob_ops ops; 69 memset(&ops, 0, sizeof(ops)); 70 ops.datbuf = datbuf; 71 ops.oobbuf = oobbuf; 72 ops.len = mtd->writesize; 73 ops.ooblen = mtd->oobsize; 74 ops.mode = MTD_OPS_RAW; 75 i = mtd_read_oob(mtd, addr, &ops); 76 if (i < 0) { 77 printf("Error (%d) reading page %08lx\n", i, off); 78 ret = 1; 79 goto free_all; 80 } 81 printf("Page %08lx dump:\n", off); 82 83 if (!only_oob) { 84 i = mtd->writesize >> 4; 85 p = datbuf; 86 87 while (i--) { 88 printf("\t%02x %02x %02x %02x %02x %02x %02x %02x" 89 " %02x %02x %02x %02x %02x %02x %02x %02x\n", 90 p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7], 91 p[8], p[9], p[10], p[11], p[12], p[13], p[14], 92 p[15]); 93 p += 16; 94 } 95 } 96 97 puts("OOB:\n"); 98 i = mtd->oobsize >> 3; 99 p = oobbuf; 100 while (i--) { 101 printf("\t%02x %02x %02x %02x %02x %02x %02x %02x\n", 102 p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7]); 103 p += 8; 104 } 105 106 free_all: 107 free(oobbuf); 108 free_dat: 109 free(datbuf); 110 111 return ret; 112 } 113 114 /* ------------------------------------------------------------------------- */ 115 116 static int set_dev(int dev) 117 { 118 if (dev < 0 || dev >= CONFIG_SYS_MAX_NAND_DEVICE || 119 !nand_info[dev]->name) { 120 puts("No such device\n"); 121 return -1; 122 } 123 124 if (nand_curr_device == dev) 125 return 0; 126 127 printf("Device %d: %s", dev, nand_info[dev]->name); 128 puts("... is now current device\n"); 129 nand_curr_device = dev; 130 131 #ifdef CONFIG_SYS_NAND_SELECT_DEVICE 132 board_nand_select_device(nand_info[dev]->priv, dev); 133 #endif 134 135 return 0; 136 } 137 138 #ifdef CONFIG_CMD_NAND_LOCK_UNLOCK 139 static void print_status(ulong start, ulong end, ulong erasesize, int status) 140 { 141 /* 142 * Micron NAND flash (e.g. MT29F4G08ABADAH4) BLOCK LOCK READ STATUS is 143 * not the same as others. Instead of bit 1 being lock, it is 144 * #lock_tight. To make the driver support either format, ignore bit 1 145 * and use only bit 0 and bit 2. 146 */ 147 printf("%08lx - %08lx: %08lx blocks %s%s%s\n", 148 start, 149 end - 1, 150 (end - start) / erasesize, 151 ((status & NAND_LOCK_STATUS_TIGHT) ? "TIGHT " : ""), 152 (!(status & NAND_LOCK_STATUS_UNLOCK) ? "LOCK " : ""), 153 ((status & NAND_LOCK_STATUS_UNLOCK) ? "UNLOCK " : "")); 154 } 155 156 static void do_nand_status(struct mtd_info *mtd) 157 { 158 ulong block_start = 0; 159 ulong off; 160 int last_status = -1; 161 162 struct nand_chip *nand_chip = mtd_to_nand(mtd); 163 /* check the WP bit */ 164 nand_chip->cmdfunc(mtd, NAND_CMD_STATUS, -1, -1); 165 printf("device is %swrite protected\n", 166 (nand_chip->read_byte(mtd) & 0x80 ? 167 "NOT " : "")); 168 169 for (off = 0; off < mtd->size; off += mtd->erasesize) { 170 int s = nand_get_lock_status(mtd, off); 171 172 /* print message only if status has changed */ 173 if (s != last_status && off != 0) { 174 print_status(block_start, off, mtd->erasesize, 175 last_status); 176 block_start = off; 177 } 178 last_status = s; 179 } 180 /* Print the last block info */ 181 print_status(block_start, off, mtd->erasesize, last_status); 182 } 183 #endif 184 185 #ifdef CONFIG_ENV_OFFSET_OOB 186 unsigned long nand_env_oob_offset; 187 188 int do_nand_env_oob(cmd_tbl_t *cmdtp, int argc, char *const argv[]) 189 { 190 int ret; 191 uint32_t oob_buf[ENV_OFFSET_SIZE/sizeof(uint32_t)]; 192 struct mtd_info *mtd = nand_info[0]; 193 char *cmd = argv[1]; 194 195 if (CONFIG_SYS_MAX_NAND_DEVICE == 0 || !mtd->name) { 196 puts("no devices available\n"); 197 return 1; 198 } 199 200 set_dev(0); 201 202 if (!strcmp(cmd, "get")) { 203 ret = get_nand_env_oob(mtd, &nand_env_oob_offset); 204 if (ret) 205 return 1; 206 207 printf("0x%08lx\n", nand_env_oob_offset); 208 } else if (!strcmp(cmd, "set")) { 209 loff_t addr; 210 loff_t maxsize; 211 struct mtd_oob_ops ops; 212 int idx = 0; 213 214 if (argc < 3) 215 goto usage; 216 217 /* We don't care about size, or maxsize. */ 218 if (mtd_arg_off(argv[2], &idx, &addr, &maxsize, &maxsize, 219 MTD_DEV_TYPE_NAND, nand_info[idx]->size)) { 220 puts("Offset or partition name expected\n"); 221 return 1; 222 } 223 if (set_dev(idx)) { 224 puts("Offset or partition name expected\n"); 225 return 1; 226 } 227 228 if (idx != 0) { 229 puts("Partition not on first NAND device\n"); 230 return 1; 231 } 232 233 if (mtd->oobavail < ENV_OFFSET_SIZE) { 234 printf("Insufficient available OOB bytes:\n" 235 "%d OOB bytes available but %d required for " 236 "env.oob support\n", 237 mtd->oobavail, ENV_OFFSET_SIZE); 238 return 1; 239 } 240 241 if ((addr & (mtd->erasesize - 1)) != 0) { 242 printf("Environment offset must be block-aligned\n"); 243 return 1; 244 } 245 246 ops.datbuf = NULL; 247 ops.mode = MTD_OOB_AUTO; 248 ops.ooboffs = 0; 249 ops.ooblen = ENV_OFFSET_SIZE; 250 ops.oobbuf = (void *) oob_buf; 251 252 oob_buf[0] = ENV_OOB_MARKER; 253 oob_buf[1] = addr / mtd->erasesize; 254 255 ret = mtd->write_oob(mtd, ENV_OFFSET_SIZE, &ops); 256 if (ret) { 257 printf("Error writing OOB block 0\n"); 258 return ret; 259 } 260 261 ret = get_nand_env_oob(mtd, &nand_env_oob_offset); 262 if (ret) { 263 printf("Error reading env offset in OOB\n"); 264 return ret; 265 } 266 267 if (addr != nand_env_oob_offset) { 268 printf("Verification of env offset in OOB failed: " 269 "0x%08llx expected but got 0x%08lx\n", 270 (unsigned long long)addr, nand_env_oob_offset); 271 return 1; 272 } 273 } else { 274 goto usage; 275 } 276 277 return ret; 278 279 usage: 280 return CMD_RET_USAGE; 281 } 282 283 #endif 284 285 static void nand_print_and_set_info(int idx) 286 { 287 struct mtd_info *mtd = nand_info[idx]; 288 struct nand_chip *chip = mtd_to_nand(mtd); 289 290 printf("Device %d: ", idx); 291 if (chip->numchips > 1) 292 printf("%dx ", chip->numchips); 293 printf("%s, sector size %u KiB\n", 294 mtd->name, mtd->erasesize >> 10); 295 printf(" Page size %8d b\n", mtd->writesize); 296 printf(" OOB size %8d b\n", mtd->oobsize); 297 printf(" Erase size %8d b\n", mtd->erasesize); 298 printf(" subpagesize %8d b\n", chip->subpagesize); 299 printf(" options 0x%8x\n", chip->options); 300 printf(" bbt options 0x%8x\n", chip->bbt_options); 301 302 /* Set geometry info */ 303 setenv_hex("nand_writesize", mtd->writesize); 304 setenv_hex("nand_oobsize", mtd->oobsize); 305 setenv_hex("nand_erasesize", mtd->erasesize); 306 } 307 308 static int raw_access(struct mtd_info *mtd, ulong addr, loff_t off, 309 ulong count, int read) 310 { 311 int ret = 0; 312 313 while (count--) { 314 /* Raw access */ 315 mtd_oob_ops_t ops = { 316 .datbuf = (u8 *)addr, 317 .oobbuf = ((u8 *)addr) + mtd->writesize, 318 .len = mtd->writesize, 319 .ooblen = mtd->oobsize, 320 .mode = MTD_OPS_RAW 321 }; 322 323 if (read) { 324 ret = mtd_read_oob(mtd, off, &ops); 325 } else { 326 ret = mtd_write_oob(mtd, off, &ops); 327 if (!ret) 328 ret = nand_verify_page_oob(mtd, &ops, off); 329 } 330 331 if (ret) { 332 printf("%s: error at offset %llx, ret %d\n", 333 __func__, (long long)off, ret); 334 break; 335 } 336 337 addr += mtd->writesize + mtd->oobsize; 338 off += mtd->writesize; 339 } 340 341 return ret; 342 } 343 344 /* Adjust a chip/partition size down for bad blocks so we don't 345 * read/write past the end of a chip/partition by accident. 346 */ 347 static void adjust_size_for_badblocks(loff_t *size, loff_t offset, int dev) 348 { 349 /* We grab the nand info object here fresh because this is usually 350 * called after arg_off_size() which can change the value of dev. 351 */ 352 struct mtd_info *mtd = nand_info[dev]; 353 loff_t maxoffset = offset + *size; 354 int badblocks = 0; 355 356 /* count badblocks in NAND from offset to offset + size */ 357 for (; offset < maxoffset; offset += mtd->erasesize) { 358 if (nand_block_isbad(mtd, offset)) 359 badblocks++; 360 } 361 /* adjust size if any bad blocks found */ 362 if (badblocks) { 363 *size -= badblocks * mtd->erasesize; 364 printf("size adjusted to 0x%llx (%d bad blocks)\n", 365 (unsigned long long)*size, badblocks); 366 } 367 } 368 369 static int do_nand(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) 370 { 371 int i, ret = 0; 372 ulong addr; 373 loff_t off, size, maxsize; 374 char *cmd, *s; 375 struct mtd_info *mtd; 376 #ifdef CONFIG_SYS_NAND_QUIET 377 int quiet = CONFIG_SYS_NAND_QUIET; 378 #else 379 int quiet = 0; 380 #endif 381 const char *quiet_str = getenv("quiet"); 382 int dev = nand_curr_device; 383 int repeat = flag & CMD_FLAG_REPEAT; 384 385 /* at least two arguments please */ 386 if (argc < 2) 387 goto usage; 388 389 if (quiet_str) 390 quiet = simple_strtoul(quiet_str, NULL, 0) != 0; 391 392 cmd = argv[1]; 393 394 /* Only "dump" is repeatable. */ 395 if (repeat && strcmp(cmd, "dump")) 396 return 0; 397 398 if (strcmp(cmd, "info") == 0) { 399 400 putc('\n'); 401 for (i = 0; i < CONFIG_SYS_MAX_NAND_DEVICE; i++) { 402 if (nand_info[i]->name) 403 nand_print_and_set_info(i); 404 } 405 return 0; 406 } 407 408 if (strcmp(cmd, "device") == 0) { 409 if (argc < 3) { 410 putc('\n'); 411 if (dev < 0 || dev >= CONFIG_SYS_MAX_NAND_DEVICE) 412 puts("no devices available\n"); 413 else 414 nand_print_and_set_info(dev); 415 return 0; 416 } 417 418 dev = (int)simple_strtoul(argv[2], NULL, 10); 419 set_dev(dev); 420 421 return 0; 422 } 423 424 #ifdef CONFIG_ENV_OFFSET_OOB 425 /* this command operates only on the first nand device */ 426 if (strcmp(cmd, "env.oob") == 0) 427 return do_nand_env_oob(cmdtp, argc - 1, argv + 1); 428 #endif 429 430 /* The following commands operate on the current device, unless 431 * overridden by a partition specifier. Note that if somehow the 432 * current device is invalid, it will have to be changed to a valid 433 * one before these commands can run, even if a partition specifier 434 * for another device is to be used. 435 */ 436 if (dev < 0 || dev >= CONFIG_SYS_MAX_NAND_DEVICE || 437 !nand_info[dev]->name) { 438 puts("\nno devices available\n"); 439 return 1; 440 } 441 mtd = nand_info[dev]; 442 443 if (strcmp(cmd, "bad") == 0) { 444 printf("\nDevice %d bad blocks:\n", dev); 445 for (off = 0; off < mtd->size; off += mtd->erasesize) 446 if (nand_block_isbad(mtd, off)) 447 printf(" %08llx\n", (unsigned long long)off); 448 return 0; 449 } 450 451 /* 452 * Syntax is: 453 * 0 1 2 3 4 454 * nand erase [clean] [off size] 455 */ 456 if (strncmp(cmd, "erase", 5) == 0 || strncmp(cmd, "scrub", 5) == 0) { 457 nand_erase_options_t opts; 458 /* "clean" at index 2 means request to write cleanmarker */ 459 int clean = argc > 2 && !strcmp("clean", argv[2]); 460 int scrub_yes = argc > 2 && !strcmp("-y", argv[2]); 461 int o = (clean || scrub_yes) ? 3 : 2; 462 int scrub = !strncmp(cmd, "scrub", 5); 463 int spread = 0; 464 int args = 2; 465 const char *scrub_warn = 466 "Warning: " 467 "scrub option will erase all factory set bad blocks!\n" 468 " " 469 "There is no reliable way to recover them.\n" 470 " " 471 "Use this command only for testing purposes if you\n" 472 " " 473 "are sure of what you are doing!\n" 474 "\nReally scrub this NAND flash? <y/N>\n"; 475 476 if (cmd[5] != 0) { 477 if (!strcmp(&cmd[5], ".spread")) { 478 spread = 1; 479 } else if (!strcmp(&cmd[5], ".part")) { 480 args = 1; 481 } else if (!strcmp(&cmd[5], ".chip")) { 482 args = 0; 483 } else { 484 goto usage; 485 } 486 } 487 488 /* 489 * Don't allow missing arguments to cause full chip/partition 490 * erases -- easy to do accidentally, e.g. with a misspelled 491 * variable name. 492 */ 493 if (argc != o + args) 494 goto usage; 495 496 printf("\nNAND %s: ", cmd); 497 /* skip first two or three arguments, look for offset and size */ 498 if (mtd_arg_off_size(argc - o, argv + o, &dev, &off, &size, 499 &maxsize, MTD_DEV_TYPE_NAND, 500 nand_info[dev]->size) != 0) 501 return 1; 502 503 if (set_dev(dev)) 504 return 1; 505 506 mtd = nand_info[dev]; 507 508 memset(&opts, 0, sizeof(opts)); 509 opts.offset = off; 510 opts.length = size; 511 opts.jffs2 = clean; 512 opts.quiet = quiet; 513 opts.spread = spread; 514 515 if (scrub) { 516 if (scrub_yes) { 517 opts.scrub = 1; 518 } else { 519 puts(scrub_warn); 520 if (confirm_yesno()) { 521 opts.scrub = 1; 522 } else { 523 puts("scrub aborted\n"); 524 return 1; 525 } 526 } 527 } 528 ret = nand_erase_opts(mtd, &opts); 529 printf("%s\n", ret ? "ERROR" : "OK"); 530 531 return ret == 0 ? 0 : 1; 532 } 533 534 if (strncmp(cmd, "dump", 4) == 0) { 535 if (argc < 3) 536 goto usage; 537 538 off = (int)simple_strtoul(argv[2], NULL, 16); 539 ret = nand_dump(mtd, off, !strcmp(&cmd[4], ".oob"), repeat); 540 541 return ret == 0 ? 1 : 0; 542 } 543 544 if (strncmp(cmd, "read", 4) == 0 || strncmp(cmd, "write", 5) == 0) { 545 size_t rwsize; 546 ulong pagecount = 1; 547 int read; 548 int raw = 0; 549 550 if (argc < 4) 551 goto usage; 552 553 addr = (ulong)simple_strtoul(argv[2], NULL, 16); 554 555 read = strncmp(cmd, "read", 4) == 0; /* 1 = read, 0 = write */ 556 printf("\nNAND %s: ", read ? "read" : "write"); 557 558 s = strchr(cmd, '.'); 559 560 if (s && !strcmp(s, ".raw")) { 561 raw = 1; 562 563 if (mtd_arg_off(argv[3], &dev, &off, &size, &maxsize, 564 MTD_DEV_TYPE_NAND, 565 nand_info[dev]->size)) 566 return 1; 567 568 if (set_dev(dev)) 569 return 1; 570 571 mtd = nand_info[dev]; 572 573 if (argc > 4 && !str2long(argv[4], &pagecount)) { 574 printf("'%s' is not a number\n", argv[4]); 575 return 1; 576 } 577 578 if (pagecount * mtd->writesize > size) { 579 puts("Size exceeds partition or device limit\n"); 580 return -1; 581 } 582 583 rwsize = pagecount * (mtd->writesize + mtd->oobsize); 584 } else { 585 if (mtd_arg_off_size(argc - 3, argv + 3, &dev, &off, 586 &size, &maxsize, 587 MTD_DEV_TYPE_NAND, 588 nand_info[dev]->size) != 0) 589 return 1; 590 591 if (set_dev(dev)) 592 return 1; 593 594 /* size is unspecified */ 595 if (argc < 5) 596 adjust_size_for_badblocks(&size, off, dev); 597 rwsize = size; 598 } 599 600 mtd = nand_info[dev]; 601 602 if (!s || !strcmp(s, ".jffs2") || 603 !strcmp(s, ".e") || !strcmp(s, ".i")) { 604 if (read) 605 ret = nand_read_skip_bad(mtd, off, &rwsize, 606 NULL, maxsize, 607 (u_char *)addr); 608 else 609 ret = nand_write_skip_bad(mtd, off, &rwsize, 610 NULL, maxsize, 611 (u_char *)addr, 612 WITH_WR_VERIFY); 613 #ifdef CONFIG_CMD_NAND_TRIMFFS 614 } else if (!strcmp(s, ".trimffs")) { 615 if (read) { 616 printf("Unknown nand command suffix '%s'\n", s); 617 return 1; 618 } 619 ret = nand_write_skip_bad(mtd, off, &rwsize, NULL, 620 maxsize, (u_char *)addr, 621 WITH_DROP_FFS | WITH_WR_VERIFY); 622 #endif 623 } else if (!strcmp(s, ".oob")) { 624 /* out-of-band data */ 625 mtd_oob_ops_t ops = { 626 .oobbuf = (u8 *)addr, 627 .ooblen = rwsize, 628 .mode = MTD_OPS_RAW 629 }; 630 631 if (read) 632 ret = mtd_read_oob(mtd, off, &ops); 633 else 634 ret = mtd_write_oob(mtd, off, &ops); 635 } else if (raw) { 636 ret = raw_access(mtd, addr, off, pagecount, read); 637 } else { 638 printf("Unknown nand command suffix '%s'.\n", s); 639 return 1; 640 } 641 642 printf(" %zu bytes %s: %s\n", rwsize, 643 read ? "read" : "written", ret ? "ERROR" : "OK"); 644 645 return ret == 0 ? 0 : 1; 646 } 647 648 #ifdef CONFIG_CMD_NAND_TORTURE 649 if (strcmp(cmd, "torture") == 0) { 650 loff_t endoff; 651 unsigned int failed = 0, passed = 0; 652 653 if (argc < 3) 654 goto usage; 655 656 if (!str2off(argv[2], &off)) { 657 puts("Offset is not a valid number\n"); 658 return 1; 659 } 660 661 size = mtd->erasesize; 662 if (argc > 3) { 663 if (!str2off(argv[3], &size)) { 664 puts("Size is not a valid number\n"); 665 return 1; 666 } 667 } 668 669 endoff = off + size; 670 if (endoff > mtd->size) { 671 puts("Arguments beyond end of NAND\n"); 672 return 1; 673 } 674 675 off = round_down(off, mtd->erasesize); 676 endoff = round_up(endoff, mtd->erasesize); 677 size = endoff - off; 678 printf("\nNAND torture: device %d offset 0x%llx size 0x%llx (block size 0x%x)\n", 679 dev, off, size, mtd->erasesize); 680 while (off < endoff) { 681 ret = nand_torture(mtd, off); 682 if (ret) { 683 failed++; 684 printf(" block at 0x%llx failed\n", off); 685 } else { 686 passed++; 687 } 688 off += mtd->erasesize; 689 } 690 printf(" Passed: %u, failed: %u\n", passed, failed); 691 return failed != 0; 692 } 693 #endif 694 695 if (strcmp(cmd, "markbad") == 0) { 696 argc -= 2; 697 argv += 2; 698 699 if (argc <= 0) 700 goto usage; 701 702 while (argc > 0) { 703 addr = simple_strtoul(*argv, NULL, 16); 704 705 if (mtd_block_markbad(mtd, addr)) { 706 printf("block 0x%08lx NOT marked " 707 "as bad! ERROR %d\n", 708 addr, ret); 709 ret = 1; 710 } else { 711 printf("block 0x%08lx successfully " 712 "marked as bad\n", 713 addr); 714 } 715 --argc; 716 ++argv; 717 } 718 return ret; 719 } 720 721 if (strcmp(cmd, "biterr") == 0) { 722 /* todo */ 723 return 1; 724 } 725 726 #ifdef CONFIG_CMD_NAND_LOCK_UNLOCK 727 if (strcmp(cmd, "lock") == 0) { 728 int tight = 0; 729 int status = 0; 730 if (argc == 3) { 731 if (!strcmp("tight", argv[2])) 732 tight = 1; 733 if (!strcmp("status", argv[2])) 734 status = 1; 735 } 736 if (status) { 737 do_nand_status(mtd); 738 } else { 739 if (!nand_lock(mtd, tight)) { 740 puts("NAND flash successfully locked\n"); 741 } else { 742 puts("Error locking NAND flash\n"); 743 return 1; 744 } 745 } 746 return 0; 747 } 748 749 if (strncmp(cmd, "unlock", 5) == 0) { 750 int allexcept = 0; 751 752 s = strchr(cmd, '.'); 753 754 if (s && !strcmp(s, ".allexcept")) 755 allexcept = 1; 756 757 if (mtd_arg_off_size(argc - 2, argv + 2, &dev, &off, &size, 758 &maxsize, MTD_DEV_TYPE_NAND, 759 nand_info[dev]->size) < 0) 760 return 1; 761 762 if (set_dev(dev)) 763 return 1; 764 765 if (!nand_unlock(nand_info[dev], off, size, allexcept)) { 766 puts("NAND flash successfully unlocked\n"); 767 } else { 768 puts("Error unlocking NAND flash, " 769 "write and erase will probably fail\n"); 770 return 1; 771 } 772 return 0; 773 } 774 #endif 775 776 usage: 777 return CMD_RET_USAGE; 778 } 779 780 #ifdef CONFIG_SYS_LONGHELP 781 static char nand_help_text[] = 782 "info - show available NAND devices\n" 783 "nand device [dev] - show or set current device\n" 784 "nand read - addr off|partition size\n" 785 "nand write - addr off|partition size\n" 786 " read/write 'size' bytes starting at offset 'off'\n" 787 " to/from memory address 'addr', skipping bad blocks.\n" 788 "nand read.raw - addr off|partition [count]\n" 789 "nand write.raw - addr off|partition [count]\n" 790 " Use read.raw/write.raw to avoid ECC and access the flash as-is.\n" 791 #ifdef CONFIG_CMD_NAND_TRIMFFS 792 "nand write.trimffs - addr off|partition size\n" 793 " write 'size' bytes starting at offset 'off' from memory address\n" 794 " 'addr', skipping bad blocks and dropping any pages at the end\n" 795 " of eraseblocks that contain only 0xFF\n" 796 #endif 797 "nand erase[.spread] [clean] off size - erase 'size' bytes " 798 "from offset 'off'\n" 799 " With '.spread', erase enough for given file size, otherwise,\n" 800 " 'size' includes skipped bad blocks.\n" 801 "nand erase.part [clean] partition - erase entire mtd partition'\n" 802 "nand erase.chip [clean] - erase entire chip'\n" 803 "nand bad - show bad blocks\n" 804 "nand dump[.oob] off - dump page\n" 805 #ifdef CONFIG_CMD_NAND_TORTURE 806 "nand torture off - torture one block at offset\n" 807 "nand torture off [size] - torture blocks from off to off+size\n" 808 #endif 809 "nand scrub [-y] off size | scrub.part partition | scrub.chip\n" 810 " really clean NAND erasing bad blocks (UNSAFE)\n" 811 "nand markbad off [...] - mark bad block(s) at offset (UNSAFE)\n" 812 "nand biterr off - make a bit error at offset (UNSAFE)" 813 #ifdef CONFIG_CMD_NAND_LOCK_UNLOCK 814 "\n" 815 "nand lock [tight] [status]\n" 816 " bring nand to lock state or display locked pages\n" 817 "nand unlock[.allexcept] [offset] [size] - unlock section" 818 #endif 819 #ifdef CONFIG_ENV_OFFSET_OOB 820 "\n" 821 "nand env.oob - environment offset in OOB of block 0 of" 822 " first device.\n" 823 "nand env.oob set off|partition - set enviromnent offset\n" 824 "nand env.oob get - get environment offset" 825 #endif 826 ""; 827 #endif 828 829 U_BOOT_CMD( 830 nand, CONFIG_SYS_MAXARGS, 1, do_nand, 831 "NAND sub-system", nand_help_text 832 ); 833 834 static int nand_load_image(cmd_tbl_t *cmdtp, struct mtd_info *mtd, 835 ulong offset, ulong addr, char *cmd) 836 { 837 int r; 838 char *s; 839 size_t cnt; 840 #if defined(CONFIG_IMAGE_FORMAT_LEGACY) 841 image_header_t *hdr; 842 #endif 843 #if defined(CONFIG_FIT) 844 const void *fit_hdr = NULL; 845 #endif 846 847 s = strchr(cmd, '.'); 848 if (s != NULL && 849 (strcmp(s, ".jffs2") && strcmp(s, ".e") && strcmp(s, ".i"))) { 850 printf("Unknown nand load suffix '%s'\n", s); 851 bootstage_error(BOOTSTAGE_ID_NAND_SUFFIX); 852 return 1; 853 } 854 855 printf("\nLoading from %s, offset 0x%lx\n", mtd->name, offset); 856 857 cnt = mtd->writesize; 858 r = nand_read_skip_bad(mtd, offset, &cnt, NULL, mtd->size, 859 (u_char *)addr); 860 if (r) { 861 puts("** Read error\n"); 862 bootstage_error(BOOTSTAGE_ID_NAND_HDR_READ); 863 return 1; 864 } 865 bootstage_mark(BOOTSTAGE_ID_NAND_HDR_READ); 866 867 switch (genimg_get_format ((void *)addr)) { 868 #if defined(CONFIG_IMAGE_FORMAT_LEGACY) 869 case IMAGE_FORMAT_LEGACY: 870 hdr = (image_header_t *)addr; 871 872 bootstage_mark(BOOTSTAGE_ID_NAND_TYPE); 873 image_print_contents (hdr); 874 875 cnt = image_get_image_size (hdr); 876 break; 877 #endif 878 #if defined(CONFIG_FIT) 879 case IMAGE_FORMAT_FIT: 880 fit_hdr = (const void *)addr; 881 puts ("Fit image detected...\n"); 882 883 cnt = fit_get_size (fit_hdr); 884 break; 885 #endif 886 default: 887 bootstage_error(BOOTSTAGE_ID_NAND_TYPE); 888 puts ("** Unknown image type\n"); 889 return 1; 890 } 891 bootstage_mark(BOOTSTAGE_ID_NAND_TYPE); 892 893 r = nand_read_skip_bad(mtd, offset, &cnt, NULL, mtd->size, 894 (u_char *)addr); 895 if (r) { 896 puts("** Read error\n"); 897 bootstage_error(BOOTSTAGE_ID_NAND_READ); 898 return 1; 899 } 900 bootstage_mark(BOOTSTAGE_ID_NAND_READ); 901 902 #if defined(CONFIG_FIT) 903 /* This cannot be done earlier, we need complete FIT image in RAM first */ 904 if (genimg_get_format ((void *)addr) == IMAGE_FORMAT_FIT) { 905 if (!fit_check_format (fit_hdr)) { 906 bootstage_error(BOOTSTAGE_ID_NAND_FIT_READ); 907 puts ("** Bad FIT image format\n"); 908 return 1; 909 } 910 bootstage_mark(BOOTSTAGE_ID_NAND_FIT_READ_OK); 911 fit_print_contents (fit_hdr); 912 } 913 #endif 914 915 /* Loading ok, update default load address */ 916 917 load_addr = addr; 918 919 return bootm_maybe_autostart(cmdtp, cmd); 920 } 921 922 static int do_nandboot(cmd_tbl_t *cmdtp, int flag, int argc, 923 char * const argv[]) 924 { 925 char *boot_device = NULL; 926 int idx; 927 ulong addr, offset = 0; 928 #if defined(CONFIG_CMD_MTDPARTS) 929 struct mtd_device *dev; 930 struct part_info *part; 931 u8 pnum; 932 933 if (argc >= 2) { 934 char *p = (argc == 2) ? argv[1] : argv[2]; 935 if (!(str2long(p, &addr)) && (mtdparts_init() == 0) && 936 (find_dev_and_part(p, &dev, &pnum, &part) == 0)) { 937 if (dev->id->type != MTD_DEV_TYPE_NAND) { 938 puts("Not a NAND device\n"); 939 return 1; 940 } 941 if (argc > 3) 942 goto usage; 943 if (argc == 3) 944 addr = simple_strtoul(argv[1], NULL, 16); 945 else 946 addr = CONFIG_SYS_LOAD_ADDR; 947 return nand_load_image(cmdtp, nand_info[dev->id->num], 948 part->offset, addr, argv[0]); 949 } 950 } 951 #endif 952 953 bootstage_mark(BOOTSTAGE_ID_NAND_PART); 954 switch (argc) { 955 case 1: 956 addr = CONFIG_SYS_LOAD_ADDR; 957 boot_device = getenv("bootdevice"); 958 break; 959 case 2: 960 addr = simple_strtoul(argv[1], NULL, 16); 961 boot_device = getenv("bootdevice"); 962 break; 963 case 3: 964 addr = simple_strtoul(argv[1], NULL, 16); 965 boot_device = argv[2]; 966 break; 967 case 4: 968 addr = simple_strtoul(argv[1], NULL, 16); 969 boot_device = argv[2]; 970 offset = simple_strtoul(argv[3], NULL, 16); 971 break; 972 default: 973 #if defined(CONFIG_CMD_MTDPARTS) 974 usage: 975 #endif 976 bootstage_error(BOOTSTAGE_ID_NAND_SUFFIX); 977 return CMD_RET_USAGE; 978 } 979 bootstage_mark(BOOTSTAGE_ID_NAND_SUFFIX); 980 981 if (!boot_device) { 982 puts("\n** No boot device **\n"); 983 bootstage_error(BOOTSTAGE_ID_NAND_BOOT_DEVICE); 984 return 1; 985 } 986 bootstage_mark(BOOTSTAGE_ID_NAND_BOOT_DEVICE); 987 988 idx = simple_strtoul(boot_device, NULL, 16); 989 990 if (idx < 0 || idx >= CONFIG_SYS_MAX_NAND_DEVICE || !nand_info[idx]->name) { 991 printf("\n** Device %d not available\n", idx); 992 bootstage_error(BOOTSTAGE_ID_NAND_AVAILABLE); 993 return 1; 994 } 995 bootstage_mark(BOOTSTAGE_ID_NAND_AVAILABLE); 996 997 return nand_load_image(cmdtp, nand_info[idx], offset, addr, argv[0]); 998 } 999 1000 U_BOOT_CMD(nboot, 4, 1, do_nandboot, 1001 "boot from NAND device", 1002 "[partition] | [[[loadAddr] dev] offset]" 1003 ); 1004