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
nand_dump(struct mtd_info * mtd,ulong off,int only_oob,int repeat)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
set_dev(int dev)116 static int set_dev(int dev)
117 {
118 struct mtd_info *mtd = get_nand_dev_by_index(dev);
119
120 if (!mtd)
121 return -ENODEV;
122
123 if (nand_curr_device == dev)
124 return 0;
125
126 printf("Device %d: %s", dev, mtd->name);
127 puts("... is now current device\n");
128 nand_curr_device = dev;
129
130 #ifdef CONFIG_SYS_NAND_SELECT_DEVICE
131 board_nand_select_device(mtd_to_nand(mtd), dev);
132 #endif
133
134 return 0;
135 }
136
137 #ifdef CONFIG_CMD_NAND_LOCK_UNLOCK
print_status(ulong start,ulong end,ulong erasesize,int status)138 static void print_status(ulong start, ulong end, ulong erasesize, int status)
139 {
140 /*
141 * Micron NAND flash (e.g. MT29F4G08ABADAH4) BLOCK LOCK READ STATUS is
142 * not the same as others. Instead of bit 1 being lock, it is
143 * #lock_tight. To make the driver support either format, ignore bit 1
144 * and use only bit 0 and bit 2.
145 */
146 printf("%08lx - %08lx: %08lx blocks %s%s%s\n",
147 start,
148 end - 1,
149 (end - start) / erasesize,
150 ((status & NAND_LOCK_STATUS_TIGHT) ? "TIGHT " : ""),
151 (!(status & NAND_LOCK_STATUS_UNLOCK) ? "LOCK " : ""),
152 ((status & NAND_LOCK_STATUS_UNLOCK) ? "UNLOCK " : ""));
153 }
154
do_nand_status(struct mtd_info * mtd)155 static void do_nand_status(struct mtd_info *mtd)
156 {
157 ulong block_start = 0;
158 ulong off;
159 int last_status = -1;
160
161 struct nand_chip *nand_chip = mtd_to_nand(mtd);
162 /* check the WP bit */
163 nand_chip->cmdfunc(mtd, NAND_CMD_STATUS, -1, -1);
164 printf("device is %swrite protected\n",
165 (nand_chip->read_byte(mtd) & 0x80 ?
166 "NOT " : ""));
167
168 for (off = 0; off < mtd->size; off += mtd->erasesize) {
169 int s = nand_get_lock_status(mtd, off);
170
171 /* print message only if status has changed */
172 if (s != last_status && off != 0) {
173 print_status(block_start, off, mtd->erasesize,
174 last_status);
175 block_start = off;
176 }
177 last_status = s;
178 }
179 /* Print the last block info */
180 print_status(block_start, off, mtd->erasesize, last_status);
181 }
182 #endif
183
184 #ifdef CONFIG_ENV_OFFSET_OOB
185 unsigned long nand_env_oob_offset;
186
do_nand_env_oob(cmd_tbl_t * cmdtp,int argc,char * const argv[])187 int do_nand_env_oob(cmd_tbl_t *cmdtp, int argc, char *const argv[])
188 {
189 int ret;
190 uint32_t oob_buf[ENV_OFFSET_SIZE/sizeof(uint32_t)];
191 struct mtd_info *mtd = get_nand_dev_by_index(0);
192 char *cmd = argv[1];
193
194 if (CONFIG_SYS_MAX_NAND_DEVICE == 0 || !mtd) {
195 puts("no devices available\n");
196 return 1;
197 }
198
199 set_dev(0);
200
201 if (!strcmp(cmd, "get")) {
202 ret = get_nand_env_oob(mtd, &nand_env_oob_offset);
203 if (ret)
204 return 1;
205
206 printf("0x%08lx\n", nand_env_oob_offset);
207 } else if (!strcmp(cmd, "set")) {
208 loff_t addr;
209 loff_t maxsize;
210 struct mtd_oob_ops ops;
211 int idx = 0;
212
213 if (argc < 3)
214 goto usage;
215
216 mtd = get_nand_dev_by_index(idx);
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, mtd->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
nand_print_and_set_info(int idx)285 static void nand_print_and_set_info(int idx)
286 {
287 struct mtd_info *mtd;
288 struct nand_chip *chip;
289
290 mtd = get_nand_dev_by_index(idx);
291 if (!mtd)
292 return;
293
294 chip = mtd_to_nand(mtd);
295 printf("Device %d: ", idx);
296 if (chip->numchips > 1)
297 printf("%dx ", chip->numchips);
298 printf("%s, sector size %u KiB\n",
299 mtd->name, mtd->erasesize >> 10);
300 printf(" Page size %8d b\n", mtd->writesize);
301 printf(" OOB size %8d b\n", mtd->oobsize);
302 printf(" Erase size %8d b\n", mtd->erasesize);
303 printf(" subpagesize %8d b\n", chip->subpagesize);
304 printf(" options 0x%08x\n", chip->options);
305 printf(" bbt options 0x%08x\n", chip->bbt_options);
306
307 /* Set geometry info */
308 env_set_hex("nand_writesize", mtd->writesize);
309 env_set_hex("nand_oobsize", mtd->oobsize);
310 env_set_hex("nand_erasesize", mtd->erasesize);
311 }
312
mtd_is_aligned_with_block_size(struct mtd_info * mtd,u64 size)313 static bool mtd_is_aligned_with_block_size(struct mtd_info *mtd, u64 size)
314 {
315 return !do_div(size, mtd->erasesize);
316 }
317
raw_access(struct mtd_info * mtd,ulong addr,loff_t off,ulong count,int read,int no_verify)318 static int raw_access(struct mtd_info *mtd, ulong addr, loff_t off,
319 ulong count, int read, int no_verify)
320 {
321 int ret = 0;
322
323 while (count && (off + mtd->writesize) <= mtd->size) {
324 /*
325 * Skipping bad block interfaces meets practical usage
326 * requirements
327 */
328 if (mtd_is_aligned_with_block_size(mtd, off) &&
329 mtd_block_isbad(mtd, off)) {
330 printf("raw_access skip bad block 0x%08llx\n",
331 off & ~(mtd->erasesize - 1));
332 off += mtd->erasesize;
333 continue;
334 }
335
336 /* Raw access */
337 mtd_oob_ops_t ops = {
338 .datbuf = (u8 *)addr,
339 .oobbuf = ((u8 *)addr) + mtd->writesize,
340 .len = mtd->writesize,
341 .ooblen = mtd->oobsize,
342 .mode = MTD_OPS_RAW
343 };
344
345 if (read) {
346 ret = mtd_read_oob(mtd, off, &ops);
347 } else {
348 ret = mtd_write_oob(mtd, off, &ops);
349 if (!ret && !no_verify)
350 ret = nand_verify_page_oob(mtd, &ops, off);
351 }
352
353 if (ret) {
354 printf("%s: error at offset %llx, ret %d\n",
355 __func__, (long long)off, ret);
356 break;
357 }
358
359 addr += mtd->writesize + mtd->oobsize;
360 off += mtd->writesize;
361 count--;
362 }
363
364 return ret;
365 }
366
367 /* Adjust a chip/partition size down for bad blocks so we don't
368 * read/write past the end of a chip/partition by accident.
369 */
adjust_size_for_badblocks(loff_t * size,loff_t offset,int dev)370 static void adjust_size_for_badblocks(loff_t *size, loff_t offset, int dev)
371 {
372 /* We grab the nand info object here fresh because this is usually
373 * called after arg_off_size() which can change the value of dev.
374 */
375 struct mtd_info *mtd = get_nand_dev_by_index(dev);
376 loff_t maxoffset = offset + *size;
377 int badblocks = 0;
378
379 /* count badblocks in NAND from offset to offset + size */
380 for (; offset < maxoffset; offset += mtd->erasesize) {
381 if (nand_block_isbad(mtd, offset))
382 badblocks++;
383 }
384 /* adjust size if any bad blocks found */
385 if (badblocks) {
386 *size -= badblocks * mtd->erasesize;
387 printf("size adjusted to 0x%llx (%d bad blocks)\n",
388 (unsigned long long)*size, badblocks);
389 }
390 }
391
do_nand(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])392 static int do_nand(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
393 {
394 int i, ret = 0;
395 ulong addr;
396 loff_t off, size, maxsize;
397 char *cmd, *s;
398 struct mtd_info *mtd;
399 #ifdef CONFIG_SYS_NAND_QUIET
400 int quiet = CONFIG_SYS_NAND_QUIET;
401 #else
402 int quiet = 0;
403 #endif
404 const char *quiet_str = env_get("quiet");
405 int dev = nand_curr_device;
406 int repeat = flag & CMD_FLAG_REPEAT;
407
408 /* at least two arguments please */
409 if (argc < 2)
410 goto usage;
411
412 if (quiet_str)
413 quiet = simple_strtoul(quiet_str, NULL, 0) != 0;
414
415 cmd = argv[1];
416
417 /* Only "dump" is repeatable. */
418 if (repeat && strcmp(cmd, "dump"))
419 return 0;
420
421 if (strcmp(cmd, "info") == 0) {
422
423 putc('\n');
424 for (i = 0; i < CONFIG_SYS_MAX_NAND_DEVICE; i++)
425 nand_print_and_set_info(i);
426 return 0;
427 }
428
429 if (strcmp(cmd, "device") == 0) {
430 if (argc < 3) {
431 putc('\n');
432 if (dev < 0 || dev >= CONFIG_SYS_MAX_NAND_DEVICE)
433 puts("no devices available\n");
434 else
435 nand_print_and_set_info(dev);
436 return 0;
437 }
438
439 dev = (int)simple_strtoul(argv[2], NULL, 10);
440 set_dev(dev);
441
442 return 0;
443 }
444
445 #ifdef CONFIG_ENV_OFFSET_OOB
446 /* this command operates only on the first nand device */
447 if (strcmp(cmd, "env.oob") == 0)
448 return do_nand_env_oob(cmdtp, argc - 1, argv + 1);
449 #endif
450
451 /* The following commands operate on the current device, unless
452 * overridden by a partition specifier. Note that if somehow the
453 * current device is invalid, it will have to be changed to a valid
454 * one before these commands can run, even if a partition specifier
455 * for another device is to be used.
456 */
457 mtd = get_nand_dev_by_index(dev);
458 if (!mtd) {
459 puts("\nno devices available\n");
460 return 1;
461 }
462
463 if (strcmp(cmd, "bad") == 0) {
464 printf("\nDevice %d bad blocks:\n", dev);
465 for (off = 0; off < mtd->size; off += mtd->erasesize)
466 if (nand_block_isbad(mtd, off))
467 printf(" %08llx\n", (unsigned long long)off);
468 return 0;
469 }
470
471 /*
472 * Syntax is:
473 * 0 1 2 3 4
474 * nand erase [clean] [off size]
475 */
476 if (strncmp(cmd, "erase", 5) == 0 || strncmp(cmd, "scrub", 5) == 0) {
477 nand_erase_options_t opts;
478 /* "clean" at index 2 means request to write cleanmarker */
479 int clean = argc > 2 && !strcmp("clean", argv[2]);
480 int scrub_yes = argc > 2 && !strcmp("-y", argv[2]);
481 int o = (clean || scrub_yes) ? 3 : 2;
482 int scrub = !strncmp(cmd, "scrub", 5);
483 int spread = 0;
484 int args = 2;
485 const char *scrub_warn =
486 "Warning: "
487 "scrub option will erase all factory set bad blocks!\n"
488 " "
489 "There is no reliable way to recover them.\n"
490 " "
491 "Use this command only for testing purposes if you\n"
492 " "
493 "are sure of what you are doing!\n"
494 "\nReally scrub this NAND flash? <y/N>\n";
495
496 if (cmd[5] != 0) {
497 if (!strcmp(&cmd[5], ".spread")) {
498 spread = 1;
499 } else if (!strcmp(&cmd[5], ".part")) {
500 args = 1;
501 } else if (!strcmp(&cmd[5], ".chip")) {
502 args = 0;
503 } else {
504 goto usage;
505 }
506 }
507
508 /*
509 * Don't allow missing arguments to cause full chip/partition
510 * erases -- easy to do accidentally, e.g. with a misspelled
511 * variable name.
512 */
513 if (argc != o + args)
514 goto usage;
515
516 printf("\nNAND %s: ", cmd);
517 /* skip first two or three arguments, look for offset and size */
518 if (mtd_arg_off_size(argc - o, argv + o, &dev, &off, &size,
519 &maxsize, MTD_DEV_TYPE_NAND,
520 mtd->size) != 0)
521 return 1;
522
523 if (set_dev(dev))
524 return 1;
525
526 mtd = get_nand_dev_by_index(dev);
527
528 memset(&opts, 0, sizeof(opts));
529 opts.offset = off;
530 opts.length = size;
531 opts.jffs2 = clean;
532 opts.quiet = quiet;
533 opts.spread = spread;
534
535 if (scrub) {
536 if (scrub_yes) {
537 opts.scrub = 1;
538 } else {
539 puts(scrub_warn);
540 if (confirm_yesno()) {
541 opts.scrub = 1;
542 } else {
543 puts("scrub aborted\n");
544 return 1;
545 }
546 }
547 }
548 ret = nand_erase_opts(mtd, &opts);
549 printf("%s\n", ret ? "ERROR" : "OK");
550
551 return ret == 0 ? 0 : 1;
552 }
553
554 if (strncmp(cmd, "dump", 4) == 0) {
555 if (argc < 3)
556 goto usage;
557
558 off = (int)simple_strtoul(argv[2], NULL, 16);
559 ret = nand_dump(mtd, off, !strcmp(&cmd[4], ".oob"), repeat);
560
561 return ret == 0 ? 1 : 0;
562 }
563
564 if (strncmp(cmd, "read", 4) == 0 || strncmp(cmd, "write", 5) == 0) {
565 size_t rwsize;
566 ulong pagecount = 1;
567 int read;
568 int raw = 0;
569 int no_verify = 0;
570
571 if (argc < 4)
572 goto usage;
573
574 addr = (ulong)simple_strtoul(argv[2], NULL, 16);
575
576 read = strncmp(cmd, "read", 4) == 0; /* 1 = read, 0 = write */
577 printf("\nNAND %s: ", read ? "read" : "write");
578
579 s = strchr(cmd, '.');
580
581 if (s && !strncmp(s, ".raw", 4)) {
582 raw = 1;
583
584 if (!strcmp(s, ".raw.noverify"))
585 no_verify = 1;
586
587 if (mtd_arg_off(argv[3], &dev, &off, &size, &maxsize,
588 MTD_DEV_TYPE_NAND,
589 mtd->size))
590 return 1;
591
592 if (set_dev(dev))
593 return 1;
594
595 mtd = get_nand_dev_by_index(dev);
596
597 if (argc > 4 && !str2long(argv[4], &pagecount)) {
598 printf("'%s' is not a number\n", argv[4]);
599 return 1;
600 }
601
602 if (strncmp(cmd, "readbyte", 8) == 0 || strncmp(cmd, "writebyte", 9) == 0) {
603 if (pagecount % (mtd->writesize + mtd->oobsize)) {
604 printf("Count=%ld should be aligned with (writesize + oobsize)\n", pagecount);
605 return -1;
606 }
607 pagecount = pagecount / (mtd->writesize + mtd->oobsize);
608 }
609
610 if (pagecount * mtd->writesize > size) {
611 puts("Size exceeds partition or device limit\n");
612 return -1;
613 }
614
615 rwsize = pagecount * (mtd->writesize + mtd->oobsize);
616 } else {
617 if (mtd_arg_off_size(argc - 3, argv + 3, &dev, &off,
618 &size, &maxsize,
619 MTD_DEV_TYPE_NAND,
620 mtd->size) != 0)
621 return 1;
622
623 if (set_dev(dev))
624 return 1;
625
626 /* size is unspecified */
627 if (argc < 5)
628 adjust_size_for_badblocks(&size, off, dev);
629 rwsize = size;
630 }
631
632 mtd = get_nand_dev_by_index(dev);
633
634 if (!s || !strcmp(s, ".jffs2") ||
635 !strcmp(s, ".e") || !strcmp(s, ".i")) {
636 if (read)
637 ret = nand_read_skip_bad(mtd, off, &rwsize,
638 NULL, maxsize,
639 (u_char *)addr);
640 else
641 ret = nand_write_skip_bad(mtd, off, &rwsize,
642 NULL, maxsize,
643 (u_char *)addr,
644 WITH_WR_VERIFY);
645 #ifdef CONFIG_CMD_NAND_TRIMFFS
646 } else if (!strcmp(s, ".trimffs")) {
647 if (read) {
648 printf("Unknown nand command suffix '%s'\n", s);
649 return 1;
650 }
651 ret = nand_write_skip_bad(mtd, off, &rwsize, NULL,
652 maxsize, (u_char *)addr,
653 WITH_DROP_FFS | WITH_WR_VERIFY);
654 #endif
655 } else if (!strcmp(s, ".oob")) {
656 /* out-of-band data */
657 mtd_oob_ops_t ops = {
658 .oobbuf = (u8 *)addr,
659 .ooblen = rwsize,
660 .mode = MTD_OPS_RAW
661 };
662
663 if (read)
664 ret = mtd_read_oob(mtd, off, &ops);
665 else
666 ret = mtd_write_oob(mtd, off, &ops);
667 } else if (raw) {
668 ret = raw_access(mtd, addr, off, pagecount, read,
669 no_verify);
670 } else {
671 printf("Unknown nand command suffix '%s'.\n", s);
672 return 1;
673 }
674
675 printf(" %zu bytes %s: %s\n", rwsize,
676 read ? "read" : "written", ret ? "ERROR" : "OK");
677
678 return ret == 0 ? 0 : 1;
679 }
680
681 #ifdef CONFIG_CMD_NAND_TORTURE
682 if (strcmp(cmd, "torture") == 0) {
683 loff_t endoff;
684 unsigned int failed = 0, passed = 0;
685
686 if (argc < 3)
687 goto usage;
688
689 if (!str2off(argv[2], &off)) {
690 puts("Offset is not a valid number\n");
691 return 1;
692 }
693
694 size = mtd->erasesize;
695 if (argc > 3) {
696 if (!str2off(argv[3], &size)) {
697 puts("Size is not a valid number\n");
698 return 1;
699 }
700 }
701
702 endoff = off + size;
703 if (endoff > mtd->size) {
704 puts("Arguments beyond end of NAND\n");
705 return 1;
706 }
707
708 off = round_down(off, mtd->erasesize);
709 endoff = round_up(endoff, mtd->erasesize);
710 size = endoff - off;
711 printf("\nNAND torture: device %d offset 0x%llx size 0x%llx (block size 0x%x)\n",
712 dev, off, size, mtd->erasesize);
713 while (off < endoff) {
714 ret = nand_torture(mtd, off);
715 if (ret) {
716 failed++;
717 printf(" block at 0x%llx failed\n", off);
718 } else {
719 passed++;
720 }
721 off += mtd->erasesize;
722 }
723 printf(" Passed: %u, failed: %u\n", passed, failed);
724 return failed != 0;
725 }
726 #endif
727
728 if (strcmp(cmd, "markbad") == 0) {
729 argc -= 2;
730 argv += 2;
731
732 if (argc <= 0)
733 goto usage;
734
735 while (argc > 0) {
736 addr = simple_strtoul(*argv, NULL, 16);
737
738 if (mtd_block_markbad(mtd, addr)) {
739 printf("block 0x%08lx NOT marked "
740 "as bad! ERROR %d\n",
741 addr, ret);
742 ret = 1;
743 } else {
744 printf("block 0x%08lx successfully "
745 "marked as bad\n",
746 addr);
747 }
748 --argc;
749 ++argv;
750 }
751 return ret;
752 }
753
754 if (strcmp(cmd, "biterr") == 0) {
755 /* todo */
756 return 1;
757 }
758
759 #ifdef CONFIG_CMD_NAND_LOCK_UNLOCK
760 if (strcmp(cmd, "lock") == 0) {
761 int tight = 0;
762 int status = 0;
763 if (argc == 3) {
764 if (!strcmp("tight", argv[2]))
765 tight = 1;
766 if (!strcmp("status", argv[2]))
767 status = 1;
768 }
769 if (status) {
770 do_nand_status(mtd);
771 } else {
772 if (!nand_lock(mtd, tight)) {
773 puts("NAND flash successfully locked\n");
774 } else {
775 puts("Error locking NAND flash\n");
776 return 1;
777 }
778 }
779 return 0;
780 }
781
782 if (strncmp(cmd, "unlock", 5) == 0) {
783 int allexcept = 0;
784
785 s = strchr(cmd, '.');
786
787 if (s && !strcmp(s, ".allexcept"))
788 allexcept = 1;
789
790 if (mtd_arg_off_size(argc - 2, argv + 2, &dev, &off, &size,
791 &maxsize, MTD_DEV_TYPE_NAND,
792 mtd->size) < 0)
793 return 1;
794
795 if (set_dev(dev))
796 return 1;
797
798 mtd = get_nand_dev_by_index(dev);
799
800 if (!nand_unlock(mtd, off, size, allexcept)) {
801 puts("NAND flash successfully unlocked\n");
802 } else {
803 puts("Error unlocking NAND flash, "
804 "write and erase will probably fail\n");
805 return 1;
806 }
807 return 0;
808 }
809 #endif
810
811 usage:
812 return CMD_RET_USAGE;
813 }
814
815 #ifdef CONFIG_SYS_LONGHELP
816 static char nand_help_text[] =
817 "info - show available NAND devices\n"
818 "nand device [dev] - show or set current device\n"
819 "nand read - addr off|partition size\n"
820 "nand write - addr off|partition size\n"
821 " read/write 'size' bytes starting at offset 'off'\n"
822 " to/from memory address 'addr', skipping bad blocks.\n"
823 "nand read.raw - addr off|partition [count]\n"
824 "nand write.raw[.noverify] - addr off|partition [count]\n"
825 " Use read.raw/write.raw to avoid ECC and access the flash as-is,\n"
826 " and skip bad\n"
827 #ifdef CONFIG_CMD_NAND_TRIMFFS
828 "nand write.trimffs - addr off|partition size\n"
829 " write 'size' bytes starting at offset 'off' from memory address\n"
830 " 'addr', skipping bad blocks and dropping any pages at the end\n"
831 " of eraseblocks that contain only 0xFF\n"
832 #endif
833 "nand erase[.spread] [clean] off size - erase 'size' bytes "
834 "from offset 'off'\n"
835 " With '.spread', erase enough for given file size, otherwise,\n"
836 " 'size' includes skipped bad blocks.\n"
837 "nand erase.part [clean] partition - erase entire mtd partition'\n"
838 "nand erase.chip [clean] - erase entire chip'\n"
839 "nand bad - show bad blocks\n"
840 "nand dump[.oob] off - dump page\n"
841 #ifdef CONFIG_CMD_NAND_TORTURE
842 "nand torture off - torture one block at offset\n"
843 "nand torture off [size] - torture blocks from off to off+size\n"
844 #endif
845 "nand scrub [-y] off size | scrub.part partition | scrub.chip\n"
846 " really clean NAND erasing bad blocks (UNSAFE)\n"
847 "nand markbad off [...] - mark bad block(s) at offset (UNSAFE)\n"
848 "nand biterr off - make a bit error at offset (UNSAFE)"
849 #ifdef CONFIG_CMD_NAND_LOCK_UNLOCK
850 "\n"
851 "nand lock [tight] [status]\n"
852 " bring nand to lock state or display locked pages\n"
853 "nand unlock[.allexcept] [offset] [size] - unlock section"
854 #endif
855 #ifdef CONFIG_ENV_OFFSET_OOB
856 "\n"
857 "nand env.oob - environment offset in OOB of block 0 of"
858 " first device.\n"
859 "nand env.oob set off|partition - set enviromnent offset\n"
860 "nand env.oob get - get environment offset"
861 #endif
862 "";
863 #endif
864
865 U_BOOT_CMD(
866 nand, CONFIG_SYS_MAXARGS, 1, do_nand,
867 "NAND sub-system", nand_help_text
868 );
869
nand_load_image(cmd_tbl_t * cmdtp,struct mtd_info * mtd,ulong offset,ulong addr,char * cmd)870 static int nand_load_image(cmd_tbl_t *cmdtp, struct mtd_info *mtd,
871 ulong offset, ulong addr, char *cmd)
872 {
873 int r;
874 char *s;
875 size_t cnt;
876 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
877 image_header_t *hdr;
878 #endif
879 #if defined(CONFIG_FIT)
880 const void *fit_hdr = NULL;
881 #endif
882
883 s = strchr(cmd, '.');
884 if (s != NULL &&
885 (strcmp(s, ".jffs2") && strcmp(s, ".e") && strcmp(s, ".i"))) {
886 printf("Unknown nand load suffix '%s'\n", s);
887 bootstage_error(BOOTSTAGE_ID_NAND_SUFFIX);
888 return 1;
889 }
890
891 printf("\nLoading from %s, offset 0x%lx\n", mtd->name, offset);
892
893 cnt = mtd->writesize;
894 r = nand_read_skip_bad(mtd, offset, &cnt, NULL, mtd->size,
895 (u_char *)addr);
896 if (r) {
897 puts("** Read error\n");
898 bootstage_error(BOOTSTAGE_ID_NAND_HDR_READ);
899 return 1;
900 }
901 bootstage_mark(BOOTSTAGE_ID_NAND_HDR_READ);
902
903 switch (genimg_get_format ((void *)addr)) {
904 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
905 case IMAGE_FORMAT_LEGACY:
906 hdr = (image_header_t *)addr;
907
908 bootstage_mark(BOOTSTAGE_ID_NAND_TYPE);
909 image_print_contents (hdr);
910
911 cnt = image_get_image_size (hdr);
912 break;
913 #endif
914 #if defined(CONFIG_FIT)
915 case IMAGE_FORMAT_FIT:
916 fit_hdr = (const void *)addr;
917 puts ("Fit image detected...\n");
918
919 cnt = fit_get_size (fit_hdr);
920 break;
921 #endif
922 default:
923 bootstage_error(BOOTSTAGE_ID_NAND_TYPE);
924 puts ("** Unknown image type\n");
925 return 1;
926 }
927 bootstage_mark(BOOTSTAGE_ID_NAND_TYPE);
928
929 r = nand_read_skip_bad(mtd, offset, &cnt, NULL, mtd->size,
930 (u_char *)addr);
931 if (r) {
932 puts("** Read error\n");
933 bootstage_error(BOOTSTAGE_ID_NAND_READ);
934 return 1;
935 }
936 bootstage_mark(BOOTSTAGE_ID_NAND_READ);
937
938 #if defined(CONFIG_FIT)
939 /* This cannot be done earlier, we need complete FIT image in RAM first */
940 if (genimg_get_format ((void *)addr) == IMAGE_FORMAT_FIT) {
941 if (!fit_check_format (fit_hdr)) {
942 bootstage_error(BOOTSTAGE_ID_NAND_FIT_READ);
943 puts ("** Bad FIT image format\n");
944 return 1;
945 }
946 bootstage_mark(BOOTSTAGE_ID_NAND_FIT_READ_OK);
947 fit_print_contents (fit_hdr);
948 }
949 #endif
950
951 /* Loading ok, update default load address */
952
953 load_addr = addr;
954
955 return bootm_maybe_autostart(cmdtp, cmd);
956 }
957
do_nandboot(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])958 static int do_nandboot(cmd_tbl_t *cmdtp, int flag, int argc,
959 char * const argv[])
960 {
961 char *boot_device = NULL;
962 int idx;
963 ulong addr, offset = 0;
964 struct mtd_info *mtd;
965 #if defined(CONFIG_CMD_MTDPARTS)
966 struct mtd_device *dev;
967 struct part_info *part;
968 u8 pnum;
969
970 if (argc >= 2) {
971 char *p = (argc == 2) ? argv[1] : argv[2];
972 if (!(str2long(p, &addr)) && (mtdparts_init() == 0) &&
973 (find_dev_and_part(p, &dev, &pnum, &part) == 0)) {
974 if (dev->id->type != MTD_DEV_TYPE_NAND) {
975 puts("Not a NAND device\n");
976 return 1;
977 }
978 if (argc > 3)
979 goto usage;
980 if (argc == 3)
981 addr = simple_strtoul(argv[1], NULL, 16);
982 else
983 addr = CONFIG_SYS_LOAD_ADDR;
984
985 mtd = get_nand_dev_by_index(dev->id->num);
986 return nand_load_image(cmdtp, mtd, part->offset,
987 addr, argv[0]);
988 }
989 }
990 #endif
991
992 bootstage_mark(BOOTSTAGE_ID_NAND_PART);
993 switch (argc) {
994 case 1:
995 addr = CONFIG_SYS_LOAD_ADDR;
996 boot_device = env_get("bootdevice");
997 break;
998 case 2:
999 addr = simple_strtoul(argv[1], NULL, 16);
1000 boot_device = env_get("bootdevice");
1001 break;
1002 case 3:
1003 addr = simple_strtoul(argv[1], NULL, 16);
1004 boot_device = argv[2];
1005 break;
1006 case 4:
1007 addr = simple_strtoul(argv[1], NULL, 16);
1008 boot_device = argv[2];
1009 offset = simple_strtoul(argv[3], NULL, 16);
1010 break;
1011 default:
1012 #if defined(CONFIG_CMD_MTDPARTS)
1013 usage:
1014 #endif
1015 bootstage_error(BOOTSTAGE_ID_NAND_SUFFIX);
1016 return CMD_RET_USAGE;
1017 }
1018 bootstage_mark(BOOTSTAGE_ID_NAND_SUFFIX);
1019
1020 if (!boot_device) {
1021 puts("\n** No boot device **\n");
1022 bootstage_error(BOOTSTAGE_ID_NAND_BOOT_DEVICE);
1023 return 1;
1024 }
1025 bootstage_mark(BOOTSTAGE_ID_NAND_BOOT_DEVICE);
1026
1027 idx = simple_strtoul(boot_device, NULL, 16);
1028
1029 mtd = get_nand_dev_by_index(idx);
1030 if (!mtd) {
1031 printf("\n** Device %d not available\n", idx);
1032 bootstage_error(BOOTSTAGE_ID_NAND_AVAILABLE);
1033 return 1;
1034 }
1035 bootstage_mark(BOOTSTAGE_ID_NAND_AVAILABLE);
1036
1037 return nand_load_image(cmdtp, mtd, offset, addr, argv[0]);
1038 }
1039
1040 U_BOOT_CMD(nboot, 4, 1, do_nandboot,
1041 "boot from NAND device",
1042 "[partition] | [[[loadAddr] dev] offset]"
1043 );
1044