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