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(cmd_tbl_t *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(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  322. {
  323. int i, ret = 0;
  324. ulong addr;
  325. loff_t off, size, maxsize;
  326. char *cmd, *s;
  327. struct mtd_info *mtd;
  328. #ifdef CONFIG_SYS_NAND_QUIET
  329. int quiet = CONFIG_SYS_NAND_QUIET;
  330. #else
  331. int quiet = 0;
  332. #endif
  333. const char *quiet_str = env_get("quiet");
  334. int dev = nand_curr_device;
  335. int repeat = flag & CMD_FLAG_REPEAT;
  336. /* at least two arguments please */
  337. if (argc < 2)
  338. goto usage;
  339. if (quiet_str)
  340. quiet = simple_strtoul(quiet_str, NULL, 0) != 0;
  341. cmd = argv[1];
  342. /* Only "dump" is repeatable. */
  343. if (repeat && strcmp(cmd, "dump"))
  344. return 0;
  345. if (strcmp(cmd, "info") == 0) {
  346. putc('\n');
  347. for (i = 0; i < CONFIG_SYS_MAX_NAND_DEVICE; i++)
  348. nand_print_and_set_info(i);
  349. return 0;
  350. }
  351. if (strcmp(cmd, "device") == 0) {
  352. if (argc < 3) {
  353. putc('\n');
  354. if (dev < 0 || dev >= CONFIG_SYS_MAX_NAND_DEVICE)
  355. puts("no devices available\n");
  356. else
  357. nand_print_and_set_info(dev);
  358. return 0;
  359. }
  360. dev = (int)simple_strtoul(argv[2], NULL, 10);
  361. set_dev(dev);
  362. return 0;
  363. }
  364. #ifdef CONFIG_ENV_OFFSET_OOB
  365. /* this command operates only on the first nand device */
  366. if (strcmp(cmd, "env.oob") == 0)
  367. return do_nand_env_oob(cmdtp, argc - 1, argv + 1);
  368. #endif
  369. /* The following commands operate on the current device, unless
  370. * overridden by a partition specifier. Note that if somehow the
  371. * current device is invalid, it will have to be changed to a valid
  372. * one before these commands can run, even if a partition specifier
  373. * for another device is to be used.
  374. */
  375. mtd = get_nand_dev_by_index(dev);
  376. if (!mtd) {
  377. puts("\nno devices available\n");
  378. return 1;
  379. }
  380. if (strcmp(cmd, "bad") == 0) {
  381. printf("\nDevice %d bad blocks:\n", dev);
  382. for (off = 0; off < mtd->size; off += mtd->erasesize)
  383. if (nand_block_isbad(mtd, off))
  384. printf(" %08llx\n", (unsigned long long)off);
  385. return 0;
  386. }
  387. /*
  388. * Syntax is:
  389. * 0 1 2 3 4
  390. * nand erase [clean] [off size]
  391. */
  392. if (strncmp(cmd, "erase", 5) == 0 || strncmp(cmd, "scrub", 5) == 0) {
  393. nand_erase_options_t opts;
  394. /* "clean" at index 2 means request to write cleanmarker */
  395. int clean = argc > 2 && !strcmp("clean", argv[2]);
  396. int scrub_yes = argc > 2 && !strcmp("-y", argv[2]);
  397. int o = (clean || scrub_yes) ? 3 : 2;
  398. int scrub = !strncmp(cmd, "scrub", 5);
  399. int spread = 0;
  400. int args = 2;
  401. const char *scrub_warn =
  402. "Warning: "
  403. "scrub option will erase all factory set bad blocks!\n"
  404. " "
  405. "There is no reliable way to recover them.\n"
  406. " "
  407. "Use this command only for testing purposes if you\n"
  408. " "
  409. "are sure of what you are doing!\n"
  410. "\nReally scrub this NAND flash? <y/N>\n";
  411. if (cmd[5] != 0) {
  412. if (!strcmp(&cmd[5], ".spread")) {
  413. spread = 1;
  414. } else if (!strcmp(&cmd[5], ".part")) {
  415. args = 1;
  416. } else if (!strcmp(&cmd[5], ".chip")) {
  417. args = 0;
  418. } else {
  419. goto usage;
  420. }
  421. }
  422. /*
  423. * Don't allow missing arguments to cause full chip/partition
  424. * erases -- easy to do accidentally, e.g. with a misspelled
  425. * variable name.
  426. */
  427. if (argc != o + args)
  428. goto usage;
  429. printf("\nNAND %s: ", cmd);
  430. /* skip first two or three arguments, look for offset and size */
  431. if (mtd_arg_off_size(argc - o, argv + o, &dev, &off, &size,
  432. &maxsize, MTD_DEV_TYPE_NAND,
  433. mtd->size) != 0)
  434. return 1;
  435. if (set_dev(dev))
  436. return 1;
  437. mtd = get_nand_dev_by_index(dev);
  438. memset(&opts, 0, sizeof(opts));
  439. opts.offset = off;
  440. opts.length = size;
  441. opts.jffs2 = clean;
  442. opts.quiet = quiet;
  443. opts.spread = spread;
  444. if (scrub) {
  445. if (scrub_yes) {
  446. opts.scrub = 1;
  447. } else {
  448. puts(scrub_warn);
  449. if (confirm_yesno()) {
  450. opts.scrub = 1;
  451. } else {
  452. puts("scrub aborted\n");
  453. return 1;
  454. }
  455. }
  456. }
  457. ret = nand_erase_opts(mtd, &opts);
  458. printf("%s\n", ret ? "ERROR" : "OK");
  459. return ret == 0 ? 0 : 1;
  460. }
  461. if (strncmp(cmd, "dump", 4) == 0) {
  462. if (argc < 3)
  463. goto usage;
  464. off = (int)simple_strtoul(argv[2], NULL, 16);
  465. ret = nand_dump(mtd, off, !strcmp(&cmd[4], ".oob"), repeat);
  466. return ret == 0 ? 1 : 0;
  467. }
  468. if (strncmp(cmd, "read", 4) == 0 || strncmp(cmd, "write", 5) == 0) {
  469. size_t rwsize;
  470. ulong pagecount = 1;
  471. int read;
  472. int raw = 0;
  473. int no_verify = 0;
  474. if (argc < 4)
  475. goto usage;
  476. addr = (ulong)simple_strtoul(argv[2], NULL, 16);
  477. read = strncmp(cmd, "read", 4) == 0; /* 1 = read, 0 = write */
  478. printf("\nNAND %s: ", read ? "read" : "write");
  479. s = strchr(cmd, '.');
  480. if (s && !strncmp(s, ".raw", 4)) {
  481. raw = 1;
  482. if (!strcmp(s, ".raw.noverify"))
  483. no_verify = 1;
  484. if (mtd_arg_off(argv[3], &dev, &off, &size, &maxsize,
  485. MTD_DEV_TYPE_NAND,
  486. mtd->size))
  487. return 1;
  488. if (set_dev(dev))
  489. return 1;
  490. mtd = get_nand_dev_by_index(dev);
  491. if (argc > 4 && !str2long(argv[4], &pagecount)) {
  492. printf("'%s' is not a number\n", argv[4]);
  493. return 1;
  494. }
  495. if (pagecount * mtd->writesize > size) {
  496. puts("Size exceeds partition or device limit\n");
  497. return -1;
  498. }
  499. rwsize = pagecount * (mtd->writesize + mtd->oobsize);
  500. } else {
  501. if (mtd_arg_off_size(argc - 3, argv + 3, &dev, &off,
  502. &size, &maxsize,
  503. MTD_DEV_TYPE_NAND,
  504. mtd->size) != 0)
  505. return 1;
  506. if (set_dev(dev))
  507. return 1;
  508. /* size is unspecified */
  509. if (argc < 5)
  510. adjust_size_for_badblocks(&size, off, dev);
  511. rwsize = size;
  512. }
  513. mtd = get_nand_dev_by_index(dev);
  514. if (!s || !strcmp(s, ".jffs2") ||
  515. !strcmp(s, ".e") || !strcmp(s, ".i")) {
  516. if (read)
  517. ret = nand_read_skip_bad(mtd, off, &rwsize,
  518. NULL, maxsize,
  519. (u_char *)addr);
  520. else
  521. ret = nand_write_skip_bad(mtd, off, &rwsize,
  522. NULL, maxsize,
  523. (u_char *)addr,
  524. WITH_WR_VERIFY);
  525. #ifdef CONFIG_CMD_NAND_TRIMFFS
  526. } else if (!strcmp(s, ".trimffs")) {
  527. if (read) {
  528. printf("Unknown nand command suffix '%s'\n", s);
  529. return 1;
  530. }
  531. ret = nand_write_skip_bad(mtd, off, &rwsize, NULL,
  532. maxsize, (u_char *)addr,
  533. WITH_DROP_FFS | WITH_WR_VERIFY);
  534. #endif
  535. } else if (!strcmp(s, ".oob")) {
  536. /* out-of-band data */
  537. mtd_oob_ops_t ops = {
  538. .oobbuf = (u8 *)addr,
  539. .ooblen = rwsize,
  540. .mode = MTD_OPS_RAW
  541. };
  542. if (read)
  543. ret = mtd_read_oob(mtd, off, &ops);
  544. else
  545. ret = mtd_write_oob(mtd, off, &ops);
  546. } else if (raw) {
  547. ret = raw_access(mtd, addr, off, pagecount, read,
  548. no_verify);
  549. } else {
  550. printf("Unknown nand command suffix '%s'.\n", s);
  551. return 1;
  552. }
  553. printf(" %zu bytes %s: %s\n", rwsize,
  554. read ? "read" : "written", ret ? "ERROR" : "OK");
  555. return ret == 0 ? 0 : 1;
  556. }
  557. #ifdef CONFIG_CMD_NAND_TORTURE
  558. if (strcmp(cmd, "torture") == 0) {
  559. loff_t endoff;
  560. unsigned int failed = 0, passed = 0;
  561. if (argc < 3)
  562. goto usage;
  563. if (!str2off(argv[2], &off)) {
  564. puts("Offset is not a valid number\n");
  565. return 1;
  566. }
  567. size = mtd->erasesize;
  568. if (argc > 3) {
  569. if (!str2off(argv[3], &size)) {
  570. puts("Size is not a valid number\n");
  571. return 1;
  572. }
  573. }
  574. endoff = off + size;
  575. if (endoff > mtd->size) {
  576. puts("Arguments beyond end of NAND\n");
  577. return 1;
  578. }
  579. off = round_down(off, mtd->erasesize);
  580. endoff = round_up(endoff, mtd->erasesize);
  581. size = endoff - off;
  582. printf("\nNAND torture: device %d offset 0x%llx size 0x%llx (block size 0x%x)\n",
  583. dev, off, size, mtd->erasesize);
  584. while (off < endoff) {
  585. ret = nand_torture(mtd, off);
  586. if (ret) {
  587. failed++;
  588. printf(" block at 0x%llx failed\n", off);
  589. } else {
  590. passed++;
  591. }
  592. off += mtd->erasesize;
  593. }
  594. printf(" Passed: %u, failed: %u\n", passed, failed);
  595. return failed != 0;
  596. }
  597. #endif
  598. if (strcmp(cmd, "markbad") == 0) {
  599. argc -= 2;
  600. argv += 2;
  601. if (argc <= 0)
  602. goto usage;
  603. while (argc > 0) {
  604. addr = simple_strtoul(*argv, NULL, 16);
  605. if (mtd_block_markbad(mtd, addr)) {
  606. printf("block 0x%08lx NOT marked "
  607. "as bad! ERROR %d\n",
  608. addr, ret);
  609. ret = 1;
  610. } else {
  611. printf("block 0x%08lx successfully "
  612. "marked as bad\n",
  613. addr);
  614. }
  615. --argc;
  616. ++argv;
  617. }
  618. return ret;
  619. }
  620. if (strcmp(cmd, "biterr") == 0) {
  621. /* todo */
  622. return 1;
  623. }
  624. #ifdef CONFIG_CMD_NAND_LOCK_UNLOCK
  625. if (strcmp(cmd, "lock") == 0) {
  626. int tight = 0;
  627. int status = 0;
  628. if (argc == 3) {
  629. if (!strcmp("tight", argv[2]))
  630. tight = 1;
  631. if (!strcmp("status", argv[2]))
  632. status = 1;
  633. }
  634. if (status) {
  635. do_nand_status(mtd);
  636. } else {
  637. if (!nand_lock(mtd, tight)) {
  638. puts("NAND flash successfully locked\n");
  639. } else {
  640. puts("Error locking NAND flash\n");
  641. return 1;
  642. }
  643. }
  644. return 0;
  645. }
  646. if (strncmp(cmd, "unlock", 5) == 0) {
  647. int allexcept = 0;
  648. s = strchr(cmd, '.');
  649. if (s && !strcmp(s, ".allexcept"))
  650. allexcept = 1;
  651. if (mtd_arg_off_size(argc - 2, argv + 2, &dev, &off, &size,
  652. &maxsize, MTD_DEV_TYPE_NAND,
  653. mtd->size) < 0)
  654. return 1;
  655. if (set_dev(dev))
  656. return 1;
  657. mtd = get_nand_dev_by_index(dev);
  658. if (!nand_unlock(mtd, off, size, allexcept)) {
  659. puts("NAND flash successfully unlocked\n");
  660. } else {
  661. puts("Error unlocking NAND flash, "
  662. "write and erase will probably fail\n");
  663. return 1;
  664. }
  665. return 0;
  666. }
  667. #endif
  668. usage:
  669. return CMD_RET_USAGE;
  670. }
  671. #ifdef CONFIG_SYS_LONGHELP
  672. static char nand_help_text[] =
  673. "info - show available NAND devices\n"
  674. "nand device [dev] - show or set current device\n"
  675. "nand read - addr off|partition size\n"
  676. "nand write - addr off|partition size\n"
  677. " read/write 'size' bytes starting at offset 'off'\n"
  678. " to/from memory address 'addr', skipping bad blocks.\n"
  679. "nand read.raw - addr off|partition [count]\n"
  680. "nand write.raw[.noverify] - addr off|partition [count]\n"
  681. " Use read.raw/write.raw to avoid ECC and access the flash as-is.\n"
  682. #ifdef CONFIG_CMD_NAND_TRIMFFS
  683. "nand write.trimffs - addr off|partition size\n"
  684. " write 'size' bytes starting at offset 'off' from memory address\n"
  685. " 'addr', skipping bad blocks and dropping any pages at the end\n"
  686. " of eraseblocks that contain only 0xFF\n"
  687. #endif
  688. "nand erase[.spread] [clean] off size - erase 'size' bytes "
  689. "from offset 'off'\n"
  690. " With '.spread', erase enough for given file size, otherwise,\n"
  691. " 'size' includes skipped bad blocks.\n"
  692. "nand erase.part [clean] partition - erase entire mtd partition'\n"
  693. "nand erase.chip [clean] - erase entire chip'\n"
  694. "nand bad - show bad blocks\n"
  695. "nand dump[.oob] off - dump page\n"
  696. #ifdef CONFIG_CMD_NAND_TORTURE
  697. "nand torture off - torture one block at offset\n"
  698. "nand torture off [size] - torture blocks from off to off+size\n"
  699. #endif
  700. "nand scrub [-y] off size | scrub.part partition | scrub.chip\n"
  701. " really clean NAND erasing bad blocks (UNSAFE)\n"
  702. "nand markbad off [...] - mark bad block(s) at offset (UNSAFE)\n"
  703. "nand biterr off - make a bit error at offset (UNSAFE)"
  704. #ifdef CONFIG_CMD_NAND_LOCK_UNLOCK
  705. "\n"
  706. "nand lock [tight] [status]\n"
  707. " bring nand to lock state or display locked pages\n"
  708. "nand unlock[.allexcept] [offset] [size] - unlock section"
  709. #endif
  710. #ifdef CONFIG_ENV_OFFSET_OOB
  711. "\n"
  712. "nand env.oob - environment offset in OOB of block 0 of"
  713. " first device.\n"
  714. "nand env.oob set off|partition - set enviromnent offset\n"
  715. "nand env.oob get - get environment offset"
  716. #endif
  717. "";
  718. #endif
  719. U_BOOT_CMD(
  720. nand, CONFIG_SYS_MAXARGS, 1, do_nand,
  721. "NAND sub-system", nand_help_text
  722. );
  723. static int nand_load_image(cmd_tbl_t *cmdtp, struct mtd_info *mtd,
  724. ulong offset, ulong addr, char *cmd)
  725. {
  726. int r;
  727. char *s;
  728. size_t cnt;
  729. #if defined(CONFIG_LEGACY_IMAGE_FORMAT)
  730. image_header_t *hdr;
  731. #endif
  732. #if defined(CONFIG_FIT)
  733. const void *fit_hdr = NULL;
  734. #endif
  735. s = strchr(cmd, '.');
  736. if (s != NULL &&
  737. (strcmp(s, ".jffs2") && strcmp(s, ".e") && strcmp(s, ".i"))) {
  738. printf("Unknown nand load suffix '%s'\n", s);
  739. bootstage_error(BOOTSTAGE_ID_NAND_SUFFIX);
  740. return 1;
  741. }
  742. printf("\nLoading from %s, offset 0x%lx\n", mtd->name, offset);
  743. cnt = mtd->writesize;
  744. r = nand_read_skip_bad(mtd, offset, &cnt, NULL, mtd->size,
  745. (u_char *)addr);
  746. if (r) {
  747. puts("** Read error\n");
  748. bootstage_error(BOOTSTAGE_ID_NAND_HDR_READ);
  749. return 1;
  750. }
  751. bootstage_mark(BOOTSTAGE_ID_NAND_HDR_READ);
  752. switch (genimg_get_format ((void *)addr)) {
  753. #if defined(CONFIG_LEGACY_IMAGE_FORMAT)
  754. case IMAGE_FORMAT_LEGACY:
  755. hdr = (image_header_t *)addr;
  756. bootstage_mark(BOOTSTAGE_ID_NAND_TYPE);
  757. image_print_contents (hdr);
  758. cnt = image_get_image_size (hdr);
  759. break;
  760. #endif
  761. #if defined(CONFIG_FIT)
  762. case IMAGE_FORMAT_FIT:
  763. fit_hdr = (const void *)addr;
  764. puts ("Fit image detected...\n");
  765. cnt = fit_get_size (fit_hdr);
  766. break;
  767. #endif
  768. default:
  769. bootstage_error(BOOTSTAGE_ID_NAND_TYPE);
  770. puts ("** Unknown image type\n");
  771. return 1;
  772. }
  773. bootstage_mark(BOOTSTAGE_ID_NAND_TYPE);
  774. r = nand_read_skip_bad(mtd, offset, &cnt, NULL, mtd->size,
  775. (u_char *)addr);
  776. if (r) {
  777. puts("** Read error\n");
  778. bootstage_error(BOOTSTAGE_ID_NAND_READ);
  779. return 1;
  780. }
  781. bootstage_mark(BOOTSTAGE_ID_NAND_READ);
  782. #if defined(CONFIG_FIT)
  783. /* This cannot be done earlier, we need complete FIT image in RAM first */
  784. if (genimg_get_format ((void *)addr) == IMAGE_FORMAT_FIT) {
  785. if (!fit_check_format (fit_hdr)) {
  786. bootstage_error(BOOTSTAGE_ID_NAND_FIT_READ);
  787. puts ("** Bad FIT image format\n");
  788. return 1;
  789. }
  790. bootstage_mark(BOOTSTAGE_ID_NAND_FIT_READ_OK);
  791. fit_print_contents (fit_hdr);
  792. }
  793. #endif
  794. /* Loading ok, update default load address */
  795. image_load_addr = addr;
  796. return bootm_maybe_autostart(cmdtp, cmd);
  797. }
  798. static int do_nandboot(cmd_tbl_t *cmdtp, int flag, int argc,
  799. char * const argv[])
  800. {
  801. char *boot_device = NULL;
  802. int idx;
  803. ulong addr, offset = 0;
  804. struct mtd_info *mtd;
  805. #if defined(CONFIG_CMD_MTDPARTS)
  806. struct mtd_device *dev;
  807. struct part_info *part;
  808. u8 pnum;
  809. if (argc >= 2) {
  810. char *p = (argc == 2) ? argv[1] : argv[2];
  811. if (!(str2long(p, &addr)) && (mtdparts_init() == 0) &&
  812. (find_dev_and_part(p, &dev, &pnum, &part) == 0)) {
  813. if (dev->id->type != MTD_DEV_TYPE_NAND) {
  814. puts("Not a NAND device\n");
  815. return 1;
  816. }
  817. if (argc > 3)
  818. goto usage;
  819. if (argc == 3)
  820. addr = simple_strtoul(argv[1], NULL, 16);
  821. else
  822. addr = CONFIG_SYS_LOAD_ADDR;
  823. mtd = get_nand_dev_by_index(dev->id->num);
  824. return nand_load_image(cmdtp, mtd, part->offset,
  825. addr, argv[0]);
  826. }
  827. }
  828. #endif
  829. bootstage_mark(BOOTSTAGE_ID_NAND_PART);
  830. switch (argc) {
  831. case 1:
  832. addr = CONFIG_SYS_LOAD_ADDR;
  833. boot_device = env_get("bootdevice");
  834. break;
  835. case 2:
  836. addr = simple_strtoul(argv[1], NULL, 16);
  837. boot_device = env_get("bootdevice");
  838. break;
  839. case 3:
  840. addr = simple_strtoul(argv[1], NULL, 16);
  841. boot_device = argv[2];
  842. break;
  843. case 4:
  844. addr = simple_strtoul(argv[1], NULL, 16);
  845. boot_device = argv[2];
  846. offset = simple_strtoul(argv[3], NULL, 16);
  847. break;
  848. default:
  849. #if defined(CONFIG_CMD_MTDPARTS)
  850. usage:
  851. #endif
  852. bootstage_error(BOOTSTAGE_ID_NAND_SUFFIX);
  853. return CMD_RET_USAGE;
  854. }
  855. bootstage_mark(BOOTSTAGE_ID_NAND_SUFFIX);
  856. if (!boot_device) {
  857. puts("\n** No boot device **\n");
  858. bootstage_error(BOOTSTAGE_ID_NAND_BOOT_DEVICE);
  859. return 1;
  860. }
  861. bootstage_mark(BOOTSTAGE_ID_NAND_BOOT_DEVICE);
  862. idx = simple_strtoul(boot_device, NULL, 16);
  863. mtd = get_nand_dev_by_index(idx);
  864. if (!mtd) {
  865. printf("\n** Device %d not available\n", idx);
  866. bootstage_error(BOOTSTAGE_ID_NAND_AVAILABLE);
  867. return 1;
  868. }
  869. bootstage_mark(BOOTSTAGE_ID_NAND_AVAILABLE);
  870. return nand_load_image(cmdtp, mtd, offset, addr, argv[0]);
  871. }
  872. U_BOOT_CMD(nboot, 4, 1, do_nandboot,
  873. "boot from NAND device",
  874. "[partition] | [[[loadAddr] dev] offset]"
  875. );