nand.c 24 KB

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