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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
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, int no_verify)
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 && !no_verify)
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 int no_verify = 0;
550
551 if (argc < 4)
552 goto usage;
553
554 addr = (ulong)simple_strtoul(argv[2], NULL, 16);
555
556 read = strncmp(cmd, "read", 4) == 0; /* 1 = read, 0 = write */
557 printf("\nNAND %s: ", read ? "read" : "write");
558
559 s = strchr(cmd, '.');
560
561 if (s && !strncmp(s, ".raw", 4)) {
562 raw = 1;
563
564 if (!strcmp(s, ".raw.noverify"))
565 no_verify = 1;
566
567 if (mtd_arg_off(argv[3], &dev, &off, &size, &maxsize,
568 MTD_DEV_TYPE_NAND,
569 nand_info[dev]->size))
570 return 1;
571
572 if (set_dev(dev))
573 return 1;
574
575 mtd = nand_info[dev];
576
577 if (argc > 4 && !str2long(argv[4], &pagecount)) {
578 printf("'%s' is not a number\n", argv[4]);
579 return 1;
580 }
581
582 if (pagecount * mtd->writesize > size) {
583 puts("Size exceeds partition or device limit\n");
584 return -1;
585 }
586
587 rwsize = pagecount * (mtd->writesize + mtd->oobsize);
588 } else {
589 if (mtd_arg_off_size(argc - 3, argv + 3, &dev, &off,
590 &size, &maxsize,
591 MTD_DEV_TYPE_NAND,
592 nand_info[dev]->size) != 0)
593 return 1;
594
595 if (set_dev(dev))
596 return 1;
597
598 /* size is unspecified */
599 if (argc < 5)
600 adjust_size_for_badblocks(&size, off, dev);
601 rwsize = size;
602 }
603
604 mtd = nand_info[dev];
605
606 if (!s || !strcmp(s, ".jffs2") ||
607 !strcmp(s, ".e") || !strcmp(s, ".i")) {
608 if (read)
609 ret = nand_read_skip_bad(mtd, off, &rwsize,
610 NULL, maxsize,
611 (u_char *)addr);
612 else
613 ret = nand_write_skip_bad(mtd, off, &rwsize,
614 NULL, maxsize,
615 (u_char *)addr,
616 WITH_WR_VERIFY);
617 #ifdef CONFIG_CMD_NAND_TRIMFFS
618 } else if (!strcmp(s, ".trimffs")) {
619 if (read) {
620 printf("Unknown nand command suffix '%s'\n", s);
621 return 1;
622 }
623 ret = nand_write_skip_bad(mtd, off, &rwsize, NULL,
624 maxsize, (u_char *)addr,
625 WITH_DROP_FFS | WITH_WR_VERIFY);
626 #endif
627 } else if (!strcmp(s, ".oob")) {
628 /* out-of-band data */
629 mtd_oob_ops_t ops = {
630 .oobbuf = (u8 *)addr,
631 .ooblen = rwsize,
632 .mode = MTD_OPS_RAW
633 };
634
635 if (read)
636 ret = mtd_read_oob(mtd, off, &ops);
637 else
638 ret = mtd_write_oob(mtd, off, &ops);
639 } else if (raw) {
640 ret = raw_access(mtd, addr, off, pagecount, read,
641 no_verify);
642 } else {
643 printf("Unknown nand command suffix '%s'.\n", s);
644 return 1;
645 }
646
647 printf(" %zu bytes %s: %s\n", rwsize,
648 read ? "read" : "written", ret ? "ERROR" : "OK");
649
650 return ret == 0 ? 0 : 1;
651 }
652
653 #ifdef CONFIG_CMD_NAND_TORTURE
654 if (strcmp(cmd, "torture") == 0) {
655 loff_t endoff;
656 unsigned int failed = 0, passed = 0;
657
658 if (argc < 3)
659 goto usage;
660
661 if (!str2off(argv[2], &off)) {
662 puts("Offset is not a valid number\n");
663 return 1;
664 }
665
666 size = mtd->erasesize;
667 if (argc > 3) {
668 if (!str2off(argv[3], &size)) {
669 puts("Size is not a valid number\n");
670 return 1;
671 }
672 }
673
674 endoff = off + size;
675 if (endoff > mtd->size) {
676 puts("Arguments beyond end of NAND\n");
677 return 1;
678 }
679
680 off = round_down(off, mtd->erasesize);
681 endoff = round_up(endoff, mtd->erasesize);
682 size = endoff - off;
683 printf("\nNAND torture: device %d offset 0x%llx size 0x%llx (block size 0x%x)\n",
684 dev, off, size, mtd->erasesize);
685 while (off < endoff) {
686 ret = nand_torture(mtd, off);
687 if (ret) {
688 failed++;
689 printf(" block at 0x%llx failed\n", off);
690 } else {
691 passed++;
692 }
693 off += mtd->erasesize;
694 }
695 printf(" Passed: %u, failed: %u\n", passed, failed);
696 return failed != 0;
697 }
698 #endif
699
700 if (strcmp(cmd, "markbad") == 0) {
701 argc -= 2;
702 argv += 2;
703
704 if (argc <= 0)
705 goto usage;
706
707 while (argc > 0) {
708 addr = simple_strtoul(*argv, NULL, 16);
709
710 if (mtd_block_markbad(mtd, addr)) {
711 printf("block 0x%08lx NOT marked "
712 "as bad! ERROR %d\n",
713 addr, ret);
714 ret = 1;
715 } else {
716 printf("block 0x%08lx successfully "
717 "marked as bad\n",
718 addr);
719 }
720 --argc;
721 ++argv;
722 }
723 return ret;
724 }
725
726 if (strcmp(cmd, "biterr") == 0) {
727 /* todo */
728 return 1;
729 }
730
731 #ifdef CONFIG_CMD_NAND_LOCK_UNLOCK
732 if (strcmp(cmd, "lock") == 0) {
733 int tight = 0;
734 int status = 0;
735 if (argc == 3) {
736 if (!strcmp("tight", argv[2]))
737 tight = 1;
738 if (!strcmp("status", argv[2]))
739 status = 1;
740 }
741 if (status) {
742 do_nand_status(mtd);
743 } else {
744 if (!nand_lock(mtd, tight)) {
745 puts("NAND flash successfully locked\n");
746 } else {
747 puts("Error locking NAND flash\n");
748 return 1;
749 }
750 }
751 return 0;
752 }
753
754 if (strncmp(cmd, "unlock", 5) == 0) {
755 int allexcept = 0;
756
757 s = strchr(cmd, '.');
758
759 if (s && !strcmp(s, ".allexcept"))
760 allexcept = 1;
761
762 if (mtd_arg_off_size(argc - 2, argv + 2, &dev, &off, &size,
763 &maxsize, MTD_DEV_TYPE_NAND,
764 nand_info[dev]->size) < 0)
765 return 1;
766
767 if (set_dev(dev))
768 return 1;
769
770 if (!nand_unlock(nand_info[dev], off, size, allexcept)) {
771 puts("NAND flash successfully unlocked\n");
772 } else {
773 puts("Error unlocking NAND flash, "
774 "write and erase will probably fail\n");
775 return 1;
776 }
777 return 0;
778 }
779 #endif
780
781 usage:
782 return CMD_RET_USAGE;
783 }
784
785 #ifdef CONFIG_SYS_LONGHELP
786 static char nand_help_text[] =
787 "info - show available NAND devices\n"
788 "nand device [dev] - show or set current device\n"
789 "nand read - addr off|partition size\n"
790 "nand write - addr off|partition size\n"
791 " read/write 'size' bytes starting at offset 'off'\n"
792 " to/from memory address 'addr', skipping bad blocks.\n"
793 "nand read.raw - addr off|partition [count]\n"
794 "nand write.raw[.noverify] - addr off|partition [count]\n"
795 " Use read.raw/write.raw to avoid ECC and access the flash as-is.\n"
796 #ifdef CONFIG_CMD_NAND_TRIMFFS
797 "nand write.trimffs - addr off|partition size\n"
798 " write 'size' bytes starting at offset 'off' from memory address\n"
799 " 'addr', skipping bad blocks and dropping any pages at the end\n"
800 " of eraseblocks that contain only 0xFF\n"
801 #endif
802 "nand erase[.spread] [clean] off size - erase 'size' bytes "
803 "from offset 'off'\n"
804 " With '.spread', erase enough for given file size, otherwise,\n"
805 " 'size' includes skipped bad blocks.\n"
806 "nand erase.part [clean] partition - erase entire mtd partition'\n"
807 "nand erase.chip [clean] - erase entire chip'\n"
808 "nand bad - show bad blocks\n"
809 "nand dump[.oob] off - dump page\n"
810 #ifdef CONFIG_CMD_NAND_TORTURE
811 "nand torture off - torture one block at offset\n"
812 "nand torture off [size] - torture blocks from off to off+size\n"
813 #endif
814 "nand scrub [-y] off size | scrub.part partition | scrub.chip\n"
815 " really clean NAND erasing bad blocks (UNSAFE)\n"
816 "nand markbad off [...] - mark bad block(s) at offset (UNSAFE)\n"
817 "nand biterr off - make a bit error at offset (UNSAFE)"
818 #ifdef CONFIG_CMD_NAND_LOCK_UNLOCK
819 "\n"
820 "nand lock [tight] [status]\n"
821 " bring nand to lock state or display locked pages\n"
822 "nand unlock[.allexcept] [offset] [size] - unlock section"
823 #endif
824 #ifdef CONFIG_ENV_OFFSET_OOB
825 "\n"
826 "nand env.oob - environment offset in OOB of block 0 of"
827 " first device.\n"
828 "nand env.oob set off|partition - set enviromnent offset\n"
829 "nand env.oob get - get environment offset"
830 #endif
831 "";
832 #endif
833
834 U_BOOT_CMD(
835 nand, CONFIG_SYS_MAXARGS, 1, do_nand,
836 "NAND sub-system", nand_help_text
837 );
838
839 static int nand_load_image(cmd_tbl_t *cmdtp, struct mtd_info *mtd,
840 ulong offset, ulong addr, char *cmd)
841 {
842 int r;
843 char *s;
844 size_t cnt;
845 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
846 image_header_t *hdr;
847 #endif
848 #if defined(CONFIG_FIT)
849 const void *fit_hdr = NULL;
850 #endif
851
852 s = strchr(cmd, '.');
853 if (s != NULL &&
854 (strcmp(s, ".jffs2") && strcmp(s, ".e") && strcmp(s, ".i"))) {
855 printf("Unknown nand load suffix '%s'\n", s);
856 bootstage_error(BOOTSTAGE_ID_NAND_SUFFIX);
857 return 1;
858 }
859
860 printf("\nLoading from %s, offset 0x%lx\n", mtd->name, offset);
861
862 cnt = mtd->writesize;
863 r = nand_read_skip_bad(mtd, offset, &cnt, NULL, mtd->size,
864 (u_char *)addr);
865 if (r) {
866 puts("** Read error\n");
867 bootstage_error(BOOTSTAGE_ID_NAND_HDR_READ);
868 return 1;
869 }
870 bootstage_mark(BOOTSTAGE_ID_NAND_HDR_READ);
871
872 switch (genimg_get_format ((void *)addr)) {
873 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
874 case IMAGE_FORMAT_LEGACY:
875 hdr = (image_header_t *)addr;
876
877 bootstage_mark(BOOTSTAGE_ID_NAND_TYPE);
878 image_print_contents (hdr);
879
880 cnt = image_get_image_size (hdr);
881 break;
882 #endif
883 #if defined(CONFIG_FIT)
884 case IMAGE_FORMAT_FIT:
885 fit_hdr = (const void *)addr;
886 puts ("Fit image detected...\n");
887
888 cnt = fit_get_size (fit_hdr);
889 break;
890 #endif
891 default:
892 bootstage_error(BOOTSTAGE_ID_NAND_TYPE);
893 puts ("** Unknown image type\n");
894 return 1;
895 }
896 bootstage_mark(BOOTSTAGE_ID_NAND_TYPE);
897
898 r = nand_read_skip_bad(mtd, offset, &cnt, NULL, mtd->size,
899 (u_char *)addr);
900 if (r) {
901 puts("** Read error\n");
902 bootstage_error(BOOTSTAGE_ID_NAND_READ);
903 return 1;
904 }
905 bootstage_mark(BOOTSTAGE_ID_NAND_READ);
906
907 #if defined(CONFIG_FIT)
908 /* This cannot be done earlier, we need complete FIT image in RAM first */
909 if (genimg_get_format ((void *)addr) == IMAGE_FORMAT_FIT) {
910 if (!fit_check_format (fit_hdr)) {
911 bootstage_error(BOOTSTAGE_ID_NAND_FIT_READ);
912 puts ("** Bad FIT image format\n");
913 return 1;
914 }
915 bootstage_mark(BOOTSTAGE_ID_NAND_FIT_READ_OK);
916 fit_print_contents (fit_hdr);
917 }
918 #endif
919
920 /* Loading ok, update default load address */
921
922 load_addr = addr;
923
924 return bootm_maybe_autostart(cmdtp, cmd);
925 }
926
927 static int do_nandboot(cmd_tbl_t *cmdtp, int flag, int argc,
928 char * const argv[])
929 {
930 char *boot_device = NULL;
931 int idx;
932 ulong addr, offset = 0;
933 #if defined(CONFIG_CMD_MTDPARTS)
934 struct mtd_device *dev;
935 struct part_info *part;
936 u8 pnum;
937
938 if (argc >= 2) {
939 char *p = (argc == 2) ? argv[1] : argv[2];
940 if (!(str2long(p, &addr)) && (mtdparts_init() == 0) &&
941 (find_dev_and_part(p, &dev, &pnum, &part) == 0)) {
942 if (dev->id->type != MTD_DEV_TYPE_NAND) {
943 puts("Not a NAND device\n");
944 return 1;
945 }
946 if (argc > 3)
947 goto usage;
948 if (argc == 3)
949 addr = simple_strtoul(argv[1], NULL, 16);
950 else
951 addr = CONFIG_SYS_LOAD_ADDR;
952 return nand_load_image(cmdtp, nand_info[dev->id->num],
953 part->offset, addr, argv[0]);
954 }
955 }
956 #endif
957
958 bootstage_mark(BOOTSTAGE_ID_NAND_PART);
959 switch (argc) {
960 case 1:
961 addr = CONFIG_SYS_LOAD_ADDR;
962 boot_device = getenv("bootdevice");
963 break;
964 case 2:
965 addr = simple_strtoul(argv[1], NULL, 16);
966 boot_device = getenv("bootdevice");
967 break;
968 case 3:
969 addr = simple_strtoul(argv[1], NULL, 16);
970 boot_device = argv[2];
971 break;
972 case 4:
973 addr = simple_strtoul(argv[1], NULL, 16);
974 boot_device = argv[2];
975 offset = simple_strtoul(argv[3], NULL, 16);
976 break;
977 default:
978 #if defined(CONFIG_CMD_MTDPARTS)
979 usage:
980 #endif
981 bootstage_error(BOOTSTAGE_ID_NAND_SUFFIX);
982 return CMD_RET_USAGE;
983 }
984 bootstage_mark(BOOTSTAGE_ID_NAND_SUFFIX);
985
986 if (!boot_device) {
987 puts("\n** No boot device **\n");
988 bootstage_error(BOOTSTAGE_ID_NAND_BOOT_DEVICE);
989 return 1;
990 }
991 bootstage_mark(BOOTSTAGE_ID_NAND_BOOT_DEVICE);
992
993 idx = simple_strtoul(boot_device, NULL, 16);
994
995 if (idx < 0 || idx >= CONFIG_SYS_MAX_NAND_DEVICE || !nand_info[idx]->name) {
996 printf("\n** Device %d not available\n", idx);
997 bootstage_error(BOOTSTAGE_ID_NAND_AVAILABLE);
998 return 1;
999 }
1000 bootstage_mark(BOOTSTAGE_ID_NAND_AVAILABLE);
1001
1002 return nand_load_image(cmdtp, nand_info[idx], offset, addr, argv[0]);
1003 }
1004
1005 U_BOOT_CMD(nboot, 4, 1, do_nandboot,
1006 "boot from NAND device",
1007 "[partition] | [[[loadAddr] dev] offset]"
1008 );