-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathnand.c
1147 lines (985 loc) · 27.4 KB
/
nand.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/*
* Driver for NAND support, Rick Bronson
* borrowed heavily from:
* (c) 1999 Machine Vision Holdings, Inc.
* (c) 1999, 2000 David Woodhouse <[email protected]>
*
* Ported 'dynenv' to 'nand env.oob' command
* (C) 2010 Nanometrics, Inc.
* 'dynenv' -- Dynamic environment offset in NAND OOB
* (C) Copyright 2006-2007 OpenMoko, Inc.
* Added 16-bit nand support
* (C) 2004 Texas Instruments
*
* Copyright 2010, 2012 Freescale Semiconductor
* The portions of this file whose copyright is held by Freescale and which
* are not considered a derived work of GPL v2-only code may be distributed
* and/or modified under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* The function nand_biterror() in this file is inspired from
* mtd-utils/nand-utils/nandflipbits.c which was released under GPLv2
* only
*/
#include <common.h>
#include <bootstage.h>
#include <image.h>
#include <asm/cache.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/rawnand.h>
#include <command.h>
#include <console.h>
#include <env.h>
#include <watchdog.h>
#include <malloc.h>
#include <asm/byteorder.h>
#include <jffs2/jffs2.h>
#include <nand.h>
#include "legacy-mtd-utils.h"
#if defined(CONFIG_CMD_MTDPARTS)
/* partition handling routines */
int mtdparts_init(void);
int find_dev_and_part(const char *id, struct mtd_device **dev,
u8 *part_num, struct part_info **part);
#endif
#define MAX_NUM_PAGES 64
static int nand_biterror(struct mtd_info *mtd, ulong off, int bit)
{
int ret = 0;
int page = 0;
ulong block_off;
u_char *datbuf[MAX_NUM_PAGES]; /* Data and OOB */
u_char data;
int pages_per_blk = mtd->erasesize / mtd->writesize;
struct erase_info einfo;
if (pages_per_blk > MAX_NUM_PAGES) {
printf("Too many pages in one erase block\n");
return 1;
}
if (bit < 0 || bit > 7) {
printf("bit position 0 to 7 is allowed\n");
return 1;
}
/* Allocate memory */
memset(datbuf, 0, sizeof(datbuf));
for (page = 0; page < pages_per_blk ; page++) {
datbuf[page] = malloc(mtd->writesize + mtd->oobsize);
if (!datbuf[page]) {
printf("No memory for page buffer\n");
ret = -ENOMEM;
goto free_memory;
}
}
/* Align to erase block boundary */
block_off = off & (~(mtd->erasesize - 1));
/* Read out memory as first step */
for (page = 0; page < pages_per_blk ; page++) {
struct mtd_oob_ops ops;
loff_t addr = (loff_t)block_off;
memset(&ops, 0, sizeof(ops));
ops.datbuf = datbuf[page];
ops.oobbuf = datbuf[page] + mtd->writesize;
ops.len = mtd->writesize;
ops.ooblen = mtd->oobsize;
ops.mode = MTD_OPS_RAW;
ret = mtd_read_oob(mtd, addr, &ops);
if (ret < 0) {
printf("Error (%d) reading page %08lx\n",
ret, block_off);
ret = 1;
goto free_memory;
}
block_off += mtd->writesize;
}
/* Erase the block */
memset(&einfo, 0, sizeof(einfo));
einfo.mtd = mtd;
/* Align to erase block boundary */
einfo.addr = (loff_t)(off & (~(mtd->erasesize - 1)));
einfo.len = mtd->erasesize;
ret = mtd_erase(mtd, &einfo);
if (ret < 0) {
printf("Error (%d) nand_erase_nand page %08llx\n",
ret, einfo.addr);
ret = 1;
goto free_memory;
}
/* Twist a bit in data part */
block_off = off & (mtd->erasesize - 1);
data = datbuf[block_off / mtd->writesize][block_off % mtd->writesize];
data ^= (1 << bit);
datbuf[block_off / mtd->writesize][block_off % mtd->writesize] = data;
printf("Flip data at 0x%lx with xor 0x%02x (bit=%d) to value=0x%02x\n",
off, (1 << bit), bit, data);
/* Write back twisted data and unmodified OOB */
/* Align to erase block boundary */
block_off = off & (~(mtd->erasesize - 1));
for (page = 0; page < pages_per_blk; page++) {
struct mtd_oob_ops ops;
loff_t addr = (loff_t)block_off;
memset(&ops, 0, sizeof(ops));
ops.datbuf = datbuf[page];
ops.oobbuf = datbuf[page] + mtd->writesize;
ops.len = mtd->writesize;
ops.ooblen = mtd->oobsize;
ops.mode = MTD_OPS_RAW;
ret = mtd_write_oob(mtd, addr, &ops);
if (ret < 0) {
printf("Error (%d) write page %08lx\n", ret, block_off);
ret = 1;
goto free_memory;
}
block_off += mtd->writesize;
}
free_memory:
for (page = 0; page < pages_per_blk ; page++) {
if (datbuf[page])
free(datbuf[page]);
}
return ret;
}
static int nand_dump(struct mtd_info *mtd, ulong off, int only_oob,
int repeat)
{
int i;
u_char *datbuf, *oobbuf, *p;
static loff_t last;
int ret = 0;
if (repeat)
off = last + mtd->writesize;
last = off;
datbuf = memalign(ARCH_DMA_MINALIGN, mtd->writesize);
if (!datbuf) {
puts("No memory for page buffer\n");
return 1;
}
oobbuf = memalign(ARCH_DMA_MINALIGN, mtd->oobsize);
if (!oobbuf) {
puts("No memory for page buffer\n");
ret = 1;
goto free_dat;
}
off &= ~(mtd->writesize - 1);
loff_t addr = (loff_t) off;
struct mtd_oob_ops ops;
memset(&ops, 0, sizeof(ops));
ops.datbuf = datbuf;
ops.oobbuf = oobbuf;
ops.len = mtd->writesize;
ops.ooblen = mtd->oobsize;
ops.mode = MTD_OPS_RAW;
i = mtd_read_oob(mtd, addr, &ops);
if (i < 0) {
printf("Error (%d) reading page %08lx\n", i, off);
ret = 1;
goto free_all;
}
printf("Page %08lx dump:\n", off);
if (!only_oob) {
i = mtd->writesize >> 4;
p = datbuf;
while (i--) {
printf("\t%02x %02x %02x %02x %02x %02x %02x %02x"
" %02x %02x %02x %02x %02x %02x %02x %02x\n",
p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7],
p[8], p[9], p[10], p[11], p[12], p[13], p[14],
p[15]);
p += 16;
}
}
puts("OOB:\n");
i = mtd->oobsize >> 3;
p = oobbuf;
while (i--) {
printf("\t%02x %02x %02x %02x %02x %02x %02x %02x\n",
p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7]);
p += 8;
}
free_all:
free(oobbuf);
free_dat:
free(datbuf);
return ret;
}
/* ------------------------------------------------------------------------- */
static int set_dev(int dev)
{
struct mtd_info *mtd = get_nand_dev_by_index(dev);
if (!mtd)
return -ENODEV;
if (nand_curr_device == dev)
return 0;
printf("Device %d: %s", dev, mtd->name);
puts("... is now current device\n");
nand_curr_device = dev;
#ifdef CONFIG_SYS_NAND_SELECT_DEVICE
board_nand_select_device(mtd_to_nand(mtd), dev);
#endif
return 0;
}
#ifdef CONFIG_CMD_NAND_LOCK_UNLOCK
static void print_status(ulong start, ulong end, ulong erasesize, int status)
{
/*
* Micron NAND flash (e.g. MT29F4G08ABADAH4) BLOCK LOCK READ STATUS is
* not the same as others. Instead of bit 1 being lock, it is
* #lock_tight. To make the driver support either format, ignore bit 1
* and use only bit 0 and bit 2.
*/
printf("%08lx - %08lx: %08lx blocks %s%s%s\n",
start,
end - 1,
(end - start) / erasesize,
((status & NAND_LOCK_STATUS_TIGHT) ? "TIGHT " : ""),
(!(status & NAND_LOCK_STATUS_UNLOCK) ? "LOCK " : ""),
((status & NAND_LOCK_STATUS_UNLOCK) ? "UNLOCK " : ""));
}
static void do_nand_status(struct mtd_info *mtd)
{
ulong block_start = 0;
ulong off;
int last_status = -1;
struct nand_chip *nand_chip = mtd_to_nand(mtd);
/* check the WP bit */
nand_chip->cmdfunc(mtd, NAND_CMD_STATUS, -1, -1);
printf("device is %swrite protected\n",
(nand_chip->read_byte(mtd) & 0x80 ?
"NOT " : ""));
for (off = 0; off < mtd->size; off += mtd->erasesize) {
int s = nand_get_lock_status(mtd, off);
/* print message only if status has changed */
if (s != last_status && off != 0) {
print_status(block_start, off, mtd->erasesize,
last_status);
block_start = off;
}
last_status = s;
}
/* Print the last block info */
print_status(block_start, off, mtd->erasesize, last_status);
}
#endif
#ifdef CONFIG_ENV_OFFSET_OOB
unsigned long nand_env_oob_offset;
int do_nand_env_oob(struct cmd_tbl *cmdtp, int argc, char *const argv[])
{
int ret;
uint32_t oob_buf[ENV_OFFSET_SIZE/sizeof(uint32_t)];
struct mtd_info *mtd = get_nand_dev_by_index(0);
char *cmd = argv[1];
if (CONFIG_SYS_MAX_NAND_DEVICE == 0 || !mtd) {
puts("no devices available\n");
return 1;
}
set_dev(0);
if (!strcmp(cmd, "get")) {
ret = get_nand_env_oob(mtd, &nand_env_oob_offset);
if (ret)
return 1;
printf("0x%08lx\n", nand_env_oob_offset);
} else if (!strcmp(cmd, "set")) {
loff_t addr;
loff_t maxsize;
struct mtd_oob_ops ops;
int idx = 0;
if (argc < 3)
goto usage;
mtd = get_nand_dev_by_index(idx);
/* We don't care about size, or maxsize. */
if (mtd_arg_off(argv[2], &idx, &addr, &maxsize, &maxsize,
MTD_DEV_TYPE_NAND, mtd->size)) {
puts("Offset or partition name expected\n");
return 1;
}
if (set_dev(idx)) {
puts("Offset or partition name expected\n");
return 1;
}
if (idx != 0) {
puts("Partition not on first NAND device\n");
return 1;
}
if (mtd->oobavail < ENV_OFFSET_SIZE) {
printf("Insufficient available OOB bytes:\n"
"%d OOB bytes available but %d required for "
"env.oob support\n",
mtd->oobavail, ENV_OFFSET_SIZE);
return 1;
}
if ((addr & (mtd->erasesize - 1)) != 0) {
printf("Environment offset must be block-aligned\n");
return 1;
}
ops.datbuf = NULL;
ops.mode = MTD_OOB_AUTO;
ops.ooboffs = 0;
ops.ooblen = ENV_OFFSET_SIZE;
ops.oobbuf = (void *) oob_buf;
oob_buf[0] = ENV_OOB_MARKER;
oob_buf[1] = addr / mtd->erasesize;
ret = mtd->write_oob(mtd, ENV_OFFSET_SIZE, &ops);
if (ret) {
printf("Error writing OOB block 0\n");
return ret;
}
ret = get_nand_env_oob(mtd, &nand_env_oob_offset);
if (ret) {
printf("Error reading env offset in OOB\n");
return ret;
}
if (addr != nand_env_oob_offset) {
printf("Verification of env offset in OOB failed: "
"0x%08llx expected but got 0x%08lx\n",
(unsigned long long)addr, nand_env_oob_offset);
return 1;
}
} else {
goto usage;
}
return ret;
usage:
return CMD_RET_USAGE;
}
#endif
static void nand_print_and_set_info(int idx)
{
struct mtd_info *mtd;
struct nand_chip *chip;
mtd = get_nand_dev_by_index(idx);
if (!mtd)
return;
chip = mtd_to_nand(mtd);
printf("Device %d: ", idx);
if (chip->numchips > 1)
printf("%dx ", chip->numchips);
printf("%s, sector size %u KiB\n",
mtd->name, mtd->erasesize >> 10);
printf(" Page size %8d b\n", mtd->writesize);
printf(" OOB size %8d b\n", mtd->oobsize);
printf(" Erase size %8d b\n", mtd->erasesize);
printf(" ecc strength %8d bits\n", mtd->ecc_strength);
printf(" ecc step size %8d b\n", mtd->ecc_step_size);
printf(" subpagesize %8d b\n", chip->subpagesize);
printf(" options 0x%08x\n", chip->options);
printf(" bbt options 0x%08x\n", chip->bbt_options);
/* Set geometry info */
env_set_hex("nand_writesize", mtd->writesize);
env_set_hex("nand_oobsize", mtd->oobsize);
env_set_hex("nand_erasesize", mtd->erasesize);
}
static int raw_access(struct mtd_info *mtd, ulong addr, loff_t off,
ulong count, int read, int no_verify)
{
int ret = 0;
while (count--) {
/* Raw access */
mtd_oob_ops_t ops = {
.datbuf = (u8 *)addr,
.oobbuf = ((u8 *)addr) + mtd->writesize,
.len = mtd->writesize,
.ooblen = mtd->oobsize,
.mode = MTD_OPS_RAW
};
if (read) {
ret = mtd_read_oob(mtd, off, &ops);
} else {
ret = mtd_write_oob(mtd, off, &ops);
if (!ret && !no_verify)
ret = nand_verify_page_oob(mtd, &ops, off);
}
if (ret) {
printf("%s: error at offset %llx, ret %d\n",
__func__, (long long)off, ret);
break;
}
addr += mtd->writesize + mtd->oobsize;
off += mtd->writesize;
}
return ret;
}
/* Adjust a chip/partition size down for bad blocks so we don't
* read/write past the end of a chip/partition by accident.
*/
static void adjust_size_for_badblocks(loff_t *size, loff_t offset, int dev)
{
/* We grab the nand info object here fresh because this is usually
* called after arg_off_size() which can change the value of dev.
*/
struct mtd_info *mtd = get_nand_dev_by_index(dev);
loff_t maxoffset = offset + *size;
int badblocks = 0;
/* count badblocks in NAND from offset to offset + size */
for (; offset < maxoffset; offset += mtd->erasesize) {
if (nand_block_isbad(mtd, offset))
badblocks++;
}
/* adjust size if any bad blocks found */
if (badblocks) {
*size -= badblocks * mtd->erasesize;
printf("size adjusted to 0x%llx (%d bad blocks)\n",
(unsigned long long)*size, badblocks);
}
}
static int do_nand(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
int i, ret = 0;
ulong addr;
loff_t off, size, maxsize;
char *cmd, *s;
struct mtd_info *mtd;
#ifdef CONFIG_SYS_NAND_QUIET
int quiet = CONFIG_SYS_NAND_QUIET;
#else
int quiet = 0;
#endif
const char *quiet_str = env_get("quiet");
int dev = nand_curr_device;
int repeat = flag & CMD_FLAG_REPEAT;
/* at least two arguments please */
if (argc < 2)
goto usage;
if (quiet_str)
quiet = simple_strtoul(quiet_str, NULL, 0) != 0;
cmd = argv[1];
/* Only "dump" is repeatable. */
if (repeat && strcmp(cmd, "dump"))
return 0;
if (strcmp(cmd, "info") == 0) {
putc('\n');
for (i = 0; i < CONFIG_SYS_MAX_NAND_DEVICE; i++)
nand_print_and_set_info(i);
return 0;
}
if (strcmp(cmd, "device") == 0) {
if (argc < 3) {
putc('\n');
if (dev < 0 || dev >= CONFIG_SYS_MAX_NAND_DEVICE)
puts("no devices available\n");
else
nand_print_and_set_info(dev);
return 0;
}
dev = (int)dectoul(argv[2], NULL);
set_dev(dev);
return 0;
}
#ifdef CONFIG_ENV_OFFSET_OOB
/* this command operates only on the first nand device */
if (strcmp(cmd, "env.oob") == 0)
return do_nand_env_oob(cmdtp, argc - 1, argv + 1);
#endif
/* The following commands operate on the current device, unless
* overridden by a partition specifier. Note that if somehow the
* current device is invalid, it will have to be changed to a valid
* one before these commands can run, even if a partition specifier
* for another device is to be used.
*/
mtd = get_nand_dev_by_index(dev);
if (!mtd) {
puts("\nno devices available\n");
return 1;
}
if (strcmp(cmd, "bad") == 0) {
printf("\nDevice %d bad blocks:\n", dev);
for (off = 0; off < mtd->size; off += mtd->erasesize) {
ret = nand_block_isbad(mtd, off);
if (ret)
printf(" 0x%08llx%s\n", (unsigned long long)off,
ret == 2 ? "\t (bbt reserved)" : "");
}
return 0;
}
/*
* Syntax is:
* 0 1 2 3 4
* nand erase [clean] [off size]
*/
if (strncmp(cmd, "erase", 5) == 0 || strncmp(cmd, "scrub", 5) == 0) {
nand_erase_options_t opts;
/* "clean" at index 2 means request to write cleanmarker */
int clean = argc > 2 && !strcmp("clean", argv[2]);
int scrub_yes = argc > 2 && !strcmp("-y", argv[2]);
int o = (clean || scrub_yes) ? 3 : 2;
int scrub = !strncmp(cmd, "scrub", 5);
int spread = 0;
int args = 2;
const char *scrub_warn =
"Warning: "
"scrub option will erase all factory set bad blocks!\n"
" "
"There is no reliable way to recover them.\n"
" "
"Use this command only for testing purposes if you\n"
" "
"are sure of what you are doing!\n"
"\nReally scrub this NAND flash? <y/N>\n";
if (cmd[5] != 0) {
if (!strcmp(&cmd[5], ".spread")) {
spread = 1;
} else if (!strcmp(&cmd[5], ".part")) {
args = 1;
} else if (!strcmp(&cmd[5], ".chip")) {
args = 0;
} else {
goto usage;
}
}
/*
* Don't allow missing arguments to cause full chip/partition
* erases -- easy to do accidentally, e.g. with a misspelled
* variable name.
*/
if (argc != o + args)
goto usage;
printf("\nNAND %s: ", cmd);
/* skip first two or three arguments, look for offset and size */
if (mtd_arg_off_size(argc - o, argv + o, &dev, &off, &size,
&maxsize, MTD_DEV_TYPE_NAND,
mtd->size) != 0)
return 1;
if (set_dev(dev))
return 1;
mtd = get_nand_dev_by_index(dev);
memset(&opts, 0, sizeof(opts));
opts.offset = off;
opts.length = size;
opts.jffs2 = clean;
opts.quiet = quiet;
opts.spread = spread;
if (scrub) {
if (scrub_yes) {
opts.scrub = 1;
} else {
puts(scrub_warn);
if (confirm_yesno()) {
opts.scrub = 1;
} else {
puts("scrub aborted\n");
return 1;
}
}
}
ret = nand_erase_opts(mtd, &opts);
printf("%s\n", ret ? "ERROR" : "OK");
return ret == 0 ? 0 : 1;
}
if (strncmp(cmd, "dump", 4) == 0) {
if (argc < 3)
goto usage;
off = (int)hextoul(argv[2], NULL);
ret = nand_dump(mtd, off, !strcmp(&cmd[4], ".oob"), repeat);
return ret == 0 ? 1 : 0;
}
if (strncmp(cmd, "read", 4) == 0 || strncmp(cmd, "write", 5) == 0) {
size_t rwsize;
ulong pagecount = 1;
int read;
int raw = 0;
int no_verify = 0;
if (argc < 4)
goto usage;
addr = (ulong)hextoul(argv[2], NULL);
read = strncmp(cmd, "read", 4) == 0; /* 1 = read, 0 = write */
printf("\nNAND %s: ", read ? "read" : "write");
s = strchr(cmd, '.');
if (s && !strncmp(s, ".raw", 4)) {
raw = 1;
if (!strcmp(s, ".raw.noverify"))
no_verify = 1;
if (mtd_arg_off(argv[3], &dev, &off, &size, &maxsize,
MTD_DEV_TYPE_NAND,
mtd->size))
return 1;
if (set_dev(dev))
return 1;
mtd = get_nand_dev_by_index(dev);
if (argc > 4 && !str2long(argv[4], &pagecount)) {
printf("'%s' is not a number\n", argv[4]);
return 1;
}
if (pagecount * mtd->writesize > size) {
puts("Size exceeds partition or device limit\n");
return -1;
}
rwsize = pagecount * (mtd->writesize + mtd->oobsize);
} else {
if (mtd_arg_off_size(argc - 3, argv + 3, &dev, &off,
&size, &maxsize,
MTD_DEV_TYPE_NAND,
mtd->size) != 0)
return 1;
if (set_dev(dev))
return 1;
/* size is unspecified */
if (argc < 5)
adjust_size_for_badblocks(&size, off, dev);
rwsize = size;
}
mtd = get_nand_dev_by_index(dev);
if (!s || !strcmp(s, ".jffs2") ||
!strcmp(s, ".e") || !strcmp(s, ".i")) {
if (read)
ret = nand_read_skip_bad(mtd, off, &rwsize,
NULL, maxsize,
(u_char *)addr);
else
ret = nand_write_skip_bad(mtd, off, &rwsize,
NULL, maxsize,
(u_char *)addr,
WITH_WR_VERIFY);
#ifdef CONFIG_CMD_NAND_TRIMFFS
} else if (!strcmp(s, ".trimffs")) {
if (read) {
printf("Unknown nand command suffix '%s'\n", s);
return 1;
}
ret = nand_write_skip_bad(mtd, off, &rwsize, NULL,
maxsize, (u_char *)addr,
WITH_DROP_FFS | WITH_WR_VERIFY);
#endif
} else if (!strcmp(s, ".oob")) {
/* out-of-band data */
mtd_oob_ops_t ops = {
.oobbuf = (u8 *)addr,
.ooblen = rwsize,
.mode = MTD_OPS_RAW
};
if (read)
ret = mtd_read_oob(mtd, off, &ops);
else
ret = mtd_write_oob(mtd, off, &ops);
} else if (raw) {
ret = raw_access(mtd, addr, off, pagecount, read,
no_verify);
} else {
printf("Unknown nand command suffix '%s'.\n", s);
return 1;
}
printf(" %zu bytes %s: %s\n", rwsize,
read ? "read" : "written", ret ? "ERROR" : "OK");
return ret == 0 ? 0 : 1;
}
#ifdef CONFIG_CMD_NAND_TORTURE
if (strcmp(cmd, "torture") == 0) {
loff_t endoff;
unsigned int failed = 0, passed = 0;
if (argc < 3)
goto usage;
if (!str2off(argv[2], &off)) {
puts("Offset is not a valid number\n");
return 1;
}
size = mtd->erasesize;
if (argc > 3) {
if (!str2off(argv[3], &size)) {
puts("Size is not a valid number\n");
return 1;
}
}
endoff = off + size;
if (endoff > mtd->size) {
puts("Arguments beyond end of NAND\n");
return 1;
}
off = round_down(off, mtd->erasesize);
endoff = round_up(endoff, mtd->erasesize);
size = endoff - off;
printf("\nNAND torture: device %d offset 0x%llx size 0x%llx (block size 0x%x)\n",
dev, off, size, mtd->erasesize);
while (off < endoff) {
ret = nand_torture(mtd, off);
if (ret) {
failed++;
printf(" block at 0x%llx failed\n", off);
} else {
passed++;
}
off += mtd->erasesize;
}
printf(" Passed: %u, failed: %u\n", passed, failed);
return failed != 0;
}
#endif
if (strcmp(cmd, "markbad") == 0) {
argc -= 2;
argv += 2;
if (argc <= 0)
goto usage;
while (argc > 0) {
addr = hextoul(*argv, NULL);
if (mtd_block_markbad(mtd, addr)) {
printf("block 0x%08lx NOT marked "
"as bad! ERROR %d\n",
addr, ret);
ret = 1;
} else {
printf("block 0x%08lx successfully "
"marked as bad\n",
addr);
}
--argc;
++argv;
}
return ret;
}
if (strcmp(cmd, "biterr") == 0) {
int bit;
if (argc != 4)
goto usage;
off = (int)simple_strtoul(argv[2], NULL, 16);
bit = (int)simple_strtoul(argv[3], NULL, 10);
ret = nand_biterror(mtd, off, bit);
return ret;
}
#ifdef CONFIG_CMD_NAND_LOCK_UNLOCK
if (strcmp(cmd, "lock") == 0) {
int tight = 0;
int status = 0;
if (argc == 3) {
if (!strcmp("tight", argv[2]))
tight = 1;
if (!strcmp("status", argv[2]))
status = 1;
}
if (status) {
do_nand_status(mtd);
} else {
if (!nand_lock(mtd, tight)) {
puts("NAND flash successfully locked\n");
} else {
puts("Error locking NAND flash\n");
return 1;
}
}
return 0;
}
if (strncmp(cmd, "unlock", 5) == 0) {
int allexcept = 0;
s = strchr(cmd, '.');
if (s && !strcmp(s, ".allexcept"))
allexcept = 1;
if (mtd_arg_off_size(argc - 2, argv + 2, &dev, &off, &size,
&maxsize, MTD_DEV_TYPE_NAND,
mtd->size) < 0)
return 1;
if (set_dev(dev))
return 1;
mtd = get_nand_dev_by_index(dev);
if (!nand_unlock(mtd, off, size, allexcept)) {
puts("NAND flash successfully unlocked\n");
} else {
puts("Error unlocking NAND flash, "
"write and erase will probably fail\n");
return 1;
}
return 0;
}
#endif
usage:
return CMD_RET_USAGE;
}
U_BOOT_LONGHELP(nand,
"info - show available NAND devices\n"
"nand device [dev] - show or set current device\n"
"nand read - addr off|partition size\n"
"nand write - addr off|partition size\n"
" read/write 'size' bytes starting at offset 'off'\n"
" to/from memory address 'addr', skipping bad blocks.\n"
"nand read.raw - addr off|partition [count]\n"
"nand write.raw[.noverify] - addr off|partition [count]\n"
" Use read.raw/write.raw to avoid ECC and access the flash as-is.\n"
#ifdef CONFIG_CMD_NAND_TRIMFFS
"nand write.trimffs - addr off|partition size\n"
" write 'size' bytes starting at offset 'off' from memory address\n"
" 'addr', skipping bad blocks and dropping any pages at the end\n"
" of eraseblocks that contain only 0xFF\n"
#endif
"nand erase[.spread] [clean] off size - erase 'size' bytes "
"from offset 'off'\n"
" With '.spread', erase enough for given file size, otherwise,\n"
" 'size' includes skipped bad blocks.\n"
"nand erase.part [clean] partition - erase entire mtd partition'\n"
"nand erase.chip [clean] - erase entire chip'\n"
"nand bad - show bad blocks\n"
"nand dump[.oob] off - dump page\n"
#ifdef CONFIG_CMD_NAND_TORTURE
"nand torture off - torture one block at offset\n"
"nand torture off [size] - torture blocks from off to off+size\n"
#endif
"nand scrub [-y] off size | scrub.part partition | scrub.chip\n"
" really clean NAND erasing bad blocks (UNSAFE)\n"
"nand markbad off [...] - mark bad block(s) at offset (UNSAFE)\n"
"nand biterr off bit - make a bit error at offset and bit position (UNSAFE)"
#ifdef CONFIG_CMD_NAND_LOCK_UNLOCK
"\n"
"nand lock [tight] [status]\n"
" bring nand to lock state or display locked pages\n"
"nand unlock[.allexcept] [offset] [size] - unlock section"
#endif
#ifdef CONFIG_ENV_OFFSET_OOB
"\n"
"nand env.oob - environment offset in OOB of block 0 of"
" first device.\n"
"nand env.oob set off|partition - set enviromnent offset\n"
"nand env.oob get - get environment offset"
#endif
);
U_BOOT_CMD(
nand, CONFIG_SYS_MAXARGS, 1, do_nand,
"NAND sub-system", nand_help_text
);
static int nand_load_image(struct cmd_tbl *cmdtp, struct mtd_info *mtd,
ulong offset, ulong addr, char *cmd)
{
int r;
char *s;
size_t cnt;
#if defined(CONFIG_LEGACY_IMAGE_FORMAT)
struct legacy_img_hdr *hdr;
#endif
#if defined(CONFIG_FIT)
const void *fit_hdr = NULL;
#endif
s = strchr(cmd, '.');
if (s != NULL &&
(strcmp(s, ".jffs2") && strcmp(s, ".e") && strcmp(s, ".i"))) {
printf("Unknown nand load suffix '%s'\n", s);
bootstage_error(BOOTSTAGE_ID_NAND_SUFFIX);
return 1;
}
printf("\nLoading from %s, offset 0x%lx\n", mtd->name, offset);
cnt = mtd->writesize;
r = nand_read_skip_bad(mtd, offset, &cnt, NULL, mtd->size,
(u_char *)addr);
if (r) {