summaryrefslogtreecommitdiff
path: root/common/cmd_nand.c
blob: 8b359e01779487eba0e01531387cd5e1371c06e2 (plain)
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
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
/*
 * Driver for NAND support, Rick Bronson
 * borrowed heavily from:
 * (c) 1999 Machine Vision Holdings, Inc.
 * (c) 1999, 2000 David Woodhouse <dwmw2@infradead.org>
 *
 * Added 16-bit nand support
 * (C) 2004 Texas Instruments
 */

#include <common.h>


#ifndef CFG_NAND_LEGACY
/*
 *
 * New NAND support
 *
 */
#include <common.h>
#include <linux/mtd/mtd.h>

#if defined(CONFIG_CMD_NAND)

#include <command.h>
#include <watchdog.h>
#include <malloc.h>
#include <asm/byteorder.h>
#include <jffs2/jffs2.h>
#include <nand.h>

#if defined(CONFIG_CMD_JFFS2) && defined(CONFIG_JFFS2_CMDLINE)

/* parition handling routines */
int mtdparts_init(void);
int id_parse(const char *id, const char **ret_id, u8 *dev_type, u8 *dev_num);
int find_dev_and_part(const char *id, struct mtd_device **dev,
                      u8 *part_num, struct part_info **part);
#endif

static int nand_dump_oob(nand_info_t *nand, ulong off)
{
	return 0;
}

static int nand_dump(nand_info_t *nand, ulong off)
{
	int i;
	u_char *buf, *p;

	buf = malloc(nand->writesize + nand->oobsize);
	if (!buf) {
		puts("No memory for page buffer\n");
		return 1;
	}
	off &= ~(nand->writesize - 1);
	size_t dummy;
	loff_t addr = (loff_t) off;
	i = nand->read(nand, addr, nand->writesize, &dummy, buf);
	if (i < 0) {
		printf("Error (%d) reading page %08lx\n", i, off);
		free(buf);
		return 1;
	}
	printf("Page %08lx dump:\n", off);
	i = nand->writesize >> 4; p = buf;
	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 = nand->oobsize >> 3;
	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(buf);

	return 0;
}

/* ------------------------------------------------------------------------- */

static inline int str2long(char *p, ulong *num)
{
	char *endptr;

	*num = simple_strtoul(p, &endptr, 16);
	return (*p != '\0' && *endptr == '\0') ? 1 : 0;
}

static int
arg_off_size(int argc, char *argv[], nand_info_t *nand, ulong *off, size_t *size)
{
	int idx = nand_curr_device;
#if defined(CONFIG_CMD_JFFS2) && defined(CONFIG_JFFS2_CMDLINE)
	struct mtd_device *dev;
	struct part_info *part;
	u8 pnum;

	if (argc >= 1 && !(str2long(argv[0], off))) {
		if ((mtdparts_init() == 0) &&
		    (find_dev_and_part(argv[0], &dev, &pnum, &part) == 0)) {
			if (dev->id->type != MTD_DEV_TYPE_NAND) {
				puts("not a NAND device\n");
				return -1;
			}
			*off = part->offset;
			if (argc >= 2) {
				if (!(str2long(argv[1], (ulong *)size))) {
					printf("'%s' is not a number\n", argv[1]);
					return -1;
				}
				if (*size > part->size)
					*size = part->size;
			} else {
				*size = part->size;
			}
			idx = dev->id->num;
			*nand = nand_info[idx];
			goto out;
		}
	}
#endif

	if (argc >= 1) {
		if (!(str2long(argv[0], off))) {
			printf("'%s' is not a number\n", argv[0]);
			return -1;
		}
	} else {
		*off = 0;
	}

	if (argc >= 2) {
		if (!(str2long(argv[1], (ulong *)size))) {
			printf("'%s' is not a number\n", argv[1]);
			return -1;
		}
	} else {
		*size = nand->size - *off;
	}

#if  defined(CONFIG_CMD_JFFS2) && defined(CONFIG_JFFS2_CMDLINE)
out:
#endif
	printf("device %d ", idx);
	if (*size == nand->size)
		puts("whole chip\n");
	else
		printf("offset 0x%lx, size 0x%x\n", *off, *size);
	return 0;
}

int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
{
	int i, dev, ret = 0;
	ulong addr, off;
	size_t size;
	char *cmd, *s;
	nand_info_t *nand;
#ifdef CFG_NAND_QUIET
	int quiet = CFG_NAND_QUIET;
#else
	int quiet = 0;
#endif
	const char *quiet_str = getenv("quiet");

	/* at least two arguments please */
	if (argc < 2)
		goto usage;

	if (quiet_str)
		quiet = simple_strtoul(quiet_str, NULL, 0) != 0;

	cmd = argv[1];

	if (strcmp(cmd, "info") == 0) {

		putc('\n');
		for (i = 0; i < CFG_MAX_NAND_DEVICE; i++) {
			if (nand_info[i].name)
				printf("Device %d: %s, sector size %u KiB\n",
 				       i, nand_info[i].name,
				       nand_info[i].erasesize >> 10);
		}
		return 0;
	}

	if (strcmp(cmd, "device") == 0) {

		if (argc < 3) {
			if ((nand_curr_device < 0) ||
			    (nand_curr_device >= CFG_MAX_NAND_DEVICE))
				puts("\nno devices available\n");
			else
				printf("\nDevice %d: %s\n", nand_curr_device,
				       nand_info[nand_curr_device].name);
			return 0;
		}
		dev = (int)simple_strtoul(argv[2], NULL, 10);
		if (dev < 0 || dev >= CFG_MAX_NAND_DEVICE || !nand_info[dev].name) {
			puts("No such device\n");
			return 1;
		}
		printf("Device %d: %s", dev, nand_info[dev].name);
		puts("... is now current device\n");
		nand_curr_device = dev;

#ifdef CFG_NAND_SELECT_DEVICE
		/*
		 * Select the chip in the board/cpu specific driver
		 */
		board_nand_select_device(nand_info[dev].priv, dev);
#endif

		return 0;
	}

	if (strcmp(cmd, "bad") != 0 && strcmp(cmd, "erase") != 0 &&
	    strncmp(cmd, "dump", 4) != 0 &&
	    strncmp(cmd, "read", 4) != 0 && strncmp(cmd, "write", 5) != 0 &&
	    strcmp(cmd, "scrub") != 0 && strcmp(cmd, "markbad") != 0 &&
	    strcmp(cmd, "biterr") != 0 &&
	    strcmp(cmd, "lock") != 0 && strcmp(cmd, "unlock") != 0 )
		goto usage;

	/* the following commands operate on the current device */
	if (nand_curr_device < 0 || nand_curr_device >= CFG_MAX_NAND_DEVICE ||
	    !nand_info[nand_curr_device].name) {
		puts("\nno devices available\n");
		return 1;
	}
	nand = &nand_info[nand_curr_device];

	if (strcmp(cmd, "bad") == 0) {
		printf("\nDevice %d bad blocks:\n", nand_curr_device);
		for (off = 0; off < nand->size; off += nand->erasesize)
			if (nand_block_isbad(nand, off))
				printf("  %08lx\n", off);
		return 0;
	}

	/*
	 * Syntax is:
	 *   0    1     2       3    4
	 *   nand erase [clean] [off size]
	 */
	if (strcmp(cmd, "erase") == 0 || strcmp(cmd, "scrub") == 0) {
		nand_erase_options_t opts;
		/* "clean" at index 2 means request to write cleanmarker */
		int clean = argc > 2 && !strcmp("clean", argv[2]);
		int o = clean ? 3 : 2;
		int scrub = !strcmp(cmd, "scrub");

		printf("\nNAND %s: ", scrub ? "scrub" : "erase");
		/* skip first two or three arguments, look for offset and size */
		if (arg_off_size(argc - o, argv + o, nand, &off, &size) != 0)
			return 1;

		memset(&opts, 0, sizeof(opts));
		opts.offset = off;
		opts.length = size;
		opts.jffs2  = clean;
		opts.quiet  = quiet;

		if (scrub) {
			puts("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 (getc() == 'y' && getc() == '\r') {
				opts.scrub = 1;
			} else {
				puts("scrub aborted\n");
				return -1;
			}
		}
		ret = nand_erase_opts(nand, &opts);
		printf("%s\n", ret ? "ERROR" : "OK");

		return ret == 0 ? 0 : 1;
	}

	if (strncmp(cmd, "dump", 4) == 0) {
		if (argc < 3)
			goto usage;

		s = strchr(cmd, '.');
		off = (int)simple_strtoul(argv[2], NULL, 16);

		if (s != NULL && strcmp(s, ".oob") == 0)
			ret = nand_dump_oob(nand, off);
		else
			ret = nand_dump(nand, off);

		return ret == 0 ? 1 : 0;

	}

	/* read write */
	if (strncmp(cmd, "read", 4) == 0 || strncmp(cmd, "write", 5) == 0) {
		int read;

		if (argc < 4)
			goto usage;

		addr = (ulong)simple_strtoul(argv[2], NULL, 16);

		read = strncmp(cmd, "read", 4) == 0; /* 1 = read, 0 = write */
		printf("\nNAND %s: ", read ? "read" : "write");
		if (arg_off_size(argc - 3, argv + 3, nand, &off, &size) != 0)
			return 1;

		s = strchr(cmd, '.');
		if (s != NULL &&
		    (!strcmp(s, ".jffs2") || !strcmp(s, ".e") || !strcmp(s, ".i"))) {
			if (read) {
				/* read */
				nand_read_options_t opts;
				memset(&opts, 0, sizeof(opts));
				opts.buffer = (u_char*) addr;
				opts.length = size;
				opts.offset = off;
				opts.quiet = quiet;
/*
 *  ! BROKEN !
 *
 *  TODO: Function must be implemented
 *
 *				ret = nand_read_opts(nand, &opts);
 */
			} else {
				/* write */
				mtd_oob_ops_t opts;
				memset(&opts, 0, sizeof(opts));
				opts.datbuf = (u_char*) addr;
				opts.len = size;
				opts.ooblen = 64;
				opts.mode = MTD_OOB_AUTO;
				ret = nand_write_opts(nand, off, &opts);
			}
		} else if (s != NULL && !strcmp(s, ".oob")) {
			/* out-of-band data */
			mtd_oob_ops_t ops = {
				.oobbuf = (u8 *)addr,
				.ooblen = size,
				.mode = MTD_OOB_RAW
			};

			if (read)
				ret = nand->read_oob(nand, off, &ops);
			else
				ret = nand->write_oob(nand, off, &ops);
		} else {
			if (read)
				ret = nand_read(nand, off, &size, (u_char *)addr);
			else
				ret = nand_write(nand, off, &size, (u_char *)addr);
		}

		printf(" %d bytes %s: %s\n", size,
		       read ? "read" : "written", ret ? "ERROR" : "OK");

		return ret == 0 ? 0 : 1;
	}

	if (strcmp(cmd, "markbad") == 0) {
		addr = (ulong)simple_strtoul(argv[2], NULL, 16);

		int ret = nand->block_markbad(nand, addr);
		if (ret == 0) {
			printf("block 0x%08lx successfully marked as bad\n",
			       (ulong) addr);
			return 0;
		} else {
			printf("block 0x%08lx NOT marked as bad! ERROR %d\n",
			       (ulong) addr, ret);
		}
		return 1;
	}
	if (strcmp(cmd, "biterr") == 0) {
		/* todo */
		return 1;
	}

	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;
		}
/*
 * ! BROKEN !
 * 
 * TODO: must be implemented and tested by someone with HW
 */
#if 0
		if (status) {
			ulong block_start = 0;
			ulong off;
			int last_status = -1;

			struct nand_chip *nand_chip = nand->priv;
			/* check the WP bit */
			nand_chip->cmdfunc (nand, NAND_CMD_STATUS, -1, -1);
			printf("device is %swrite protected\n",
			       (nand_chip->read_byte(nand) & 0x80 ?
			       "NOT " : ""));

			for (off = 0; off < nand->size; off += nand->writesize) {
				int s = nand_get_lock_status(nand, off);

				/* print message only if status has changed
				 * or at end of chip
				 */
				if (off == nand->size - nand->writesize
				    || (s != last_status && off != 0))	{

					printf("%08lx - %08lx: %8d pages %s%s%s\n",
					       block_start,
					       off-1,
					       (off-block_start)/nand->writesize,
					       ((last_status & NAND_LOCK_STATUS_TIGHT) ? "TIGHT " : ""),
					       ((last_status & NAND_LOCK_STATUS_LOCK) ? "LOCK " : ""),
					       ((last_status & NAND_LOCK_STATUS_UNLOCK) ? "UNLOCK " : ""));
				}

				last_status = s;
			}
		} else {
			if (!nand_lock(nand, tight)) {
				puts("NAND flash successfully locked\n");
			} else {
				puts("Error locking NAND flash\n");
				return 1;
			}
		}
#endif
		return 0;
	}

	if (strcmp(cmd, "unlock") == 0) {
		if (arg_off_size(argc - 2, argv + 2, nand, &off, &size) < 0)
			return 1;

/*
 * ! BROKEN !
 * 
 * TODO: must be implemented and tested by someone with HW
 */
#if 0
		if (!nand_unlock(nand, off, size)) {
			puts("NAND flash successfully unlocked\n");
		} else {
			puts("Error unlocking NAND flash, "
			     "write and erase will probably fail\n");
			return 1;
		}
#endif
		return 0;
	}

usage:
	printf("Usage:\n%s\n", cmdtp->usage);
	return 1;
}

U_BOOT_CMD(nand, 5, 1, do_nand,
           "nand - NAND sub-system\n",
           "info - show available NAND devices\n"
           "nand device [dev] - show or set current device\n"
           "nand read[.jffs2] - addr off|partition size\n"
           "nand write[.jffs2] - addr off|partition size\n"
           "    read/write 'size' bytes starting at offset 'off'\n"
           "    to/from memory address 'addr'\n"
           "nand erase [clean] [off size] - erase 'size' bytes from\n"
           "    offset 'off' (entire device if not specified)\n"
           "nand bad - show bad blocks\n"
           "nand dump[.oob] off - dump page\n"
           "nand scrub - really clean NAND erasing bad blocks (UNSAFE)\n"
           "nand markbad off - mark bad block at offset (UNSAFE)\n"
           "nand biterr off - make a bit error at offset (UNSAFE)\n"
           "nand lock [tight] [status]\n"
           "    bring nand to lock state or display locked pages\n"
           "nand unlock [offset] [size] - unlock section\n");

static int nand_load_image(cmd_tbl_t *cmdtp, nand_info_t *nand,
                           ulong offset, ulong addr, char *cmd)
{
	int r;
	char *ep, *s;
	size_t cnt;
	image_header_t *hdr;
	int jffs2 = 0;
#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")))
		jffs2 = 1;

	printf("\nLoading from %s, offset 0x%lx\n", nand->name, offset);

	cnt = nand->writesize;
	r = nand_read(nand, offset, &cnt, (u_char *) addr);
	if (r) {
		puts("** Read error\n");
		show_boot_progress (-56);
		return 1;
	}
	show_boot_progress (56);

	switch (genimg_get_format ((void *)addr)) {
	case IMAGE_FORMAT_LEGACY:
		hdr = (image_header_t *)addr;

		show_boot_progress (57);
		image_print_contents (hdr);

		cnt = image_get_image_size (hdr);
		break;
#if defined(CONFIG_FIT)
	case IMAGE_FORMAT_FIT:
		fit_hdr = (const void *)addr;
		puts ("Fit image detected...\n");

		cnt = fit_get_size (fit_hdr);
		break;
#endif
	default:
		show_boot_progress (-57);
		puts ("** Unknown image type\n");
		return 1;
	}
	show_boot_progress (57);

	r = nand_read(nand, offset, &cnt, (u_char *) addr);
	if (r) {
		puts("** Read error\n");
		show_boot_progress (-58);
		return 1;
	}
	show_boot_progress (58);

#if defined(CONFIG_FIT)
	/* This cannot be done earlier, we need complete FIT image in RAM first */
	if (genimg_get_format ((void *)addr) == IMAGE_FORMAT_FIT) {
		if (!fit_check_format (fit_hdr)) {
			show_boot_progress (-150);
			puts ("** Bad FIT image format\n");
			return 1;
		}
		show_boot_progress (151);
		fit_print_contents (fit_hdr);
	}
#endif

	/* Loading ok, update default load address */

	load_addr = addr;

	/* Check if we should attempt an auto-start */
	if (((ep = getenv("autostart")) != NULL) && (strcmp(ep, "yes") == 0)) {
		char *local_args[2];
		extern int do_bootm(cmd_tbl_t *, int, int, char *[]);

		local_args[0] = cmd;
		local_args[1] = NULL;

		printf("Automatic boot of image at addr 0x%08lx ...\n", addr);

		do_bootm(cmdtp, 0, 1, local_args);
		return 1;
	}
	return 0;
}

int do_nandboot(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
{
	char *boot_device = NULL;
	int idx;
	ulong addr, offset = 0;
#if defined(CONFIG_CMD_JFFS2) && defined(CONFIG_JFFS2_CMDLINE)
	struct mtd_device *dev;
	struct part_info *part;
	u8 pnum;

	if (argc >= 2) {
		char *p = (argc == 2) ? argv[1] : argv[2];
		if (!(str2long(p, &addr)) && (mtdparts_init() == 0) &&
		    (find_dev_and_part(p, &dev, &pnum, &part) == 0)) {
			if (dev->id->type != MTD_DEV_TYPE_NAND) {
				puts("Not a NAND device\n");
				return 1;
			}
			if (argc > 3)
				goto usage;
			if (argc == 3)
				addr = simple_strtoul(argv[1], NULL, 16);
			else
				addr = CFG_LOAD_ADDR;
			return nand_load_image(cmdtp, &nand_info[dev->id->num],
			                       part->offset, addr, argv[0]);
		}
	}
#endif

	show_boot_progress(52);
	switch (argc) {
	case 1:
		addr = CFG_LOAD_ADDR;
		boot_device = getenv("bootdevice");
		break;
	case 2:
		addr = simple_strtoul(argv[1], NULL, 16);
		boot_device = getenv("bootdevice");
		break;
	case 3:
		addr = simple_strtoul(argv[1], NULL, 16);
		boot_device = argv[2];
		break;
	case 4:
		addr = simple_strtoul(argv[1], NULL, 16);
		boot_device = argv[2];
		offset = simple_strtoul(argv[3], NULL, 16);
		break;
	default:
#if defined(CONFIG_CMD_JFFS2) && defined(CONFIG_JFFS2_CMDLINE)
usage:
#endif
		printf("Usage:\n%s\n", cmdtp->usage);
		show_boot_progress(-53);
		return 1;
	}

	show_boot_progress(53);
	if (!boot_device) {
		puts("\n** No boot device **\n");
		show_boot_progress(-54);
		return 1;
	}
	show_boot_progress(54);

	idx = simple_strtoul(boot_device, NULL, 16);

	if (idx < 0 || idx >= CFG_MAX_NAND_DEVICE || !nand_info[idx].name) {
		printf("\n** Device %d not available\n", idx);
		show_boot_progress(-55);
		return 1;
	}
	show_boot_progress(55);

	return nand_load_image(cmdtp, &nand_info[idx], offset, addr, argv[0]);
}

U_BOOT_CMD(nboot, 4, 1, do_nandboot,
	"nboot   - boot from NAND device\n",
	"[.jffs2] [partition] | [[[loadAddr] dev] offset]\n");

#endif

#else /* CFG_NAND_LEGACY */
/*
 *
 * Legacy NAND support - to be phased out
 *
 */
#include <command.h>
#include <malloc.h>
#include <asm/io.h>
#include <watchdog.h>

#ifdef CONFIG_show_boot_progress
# include <status_led.h>
# define show_boot_progress(arg)	show_boot_progress(arg)
#else
# define show_boot_progress(arg)
#endif

#if defined(CONFIG_CMD_NAND)
#include <linux/mtd/nand_legacy.h>
#if 0
#include <linux/mtd/nand_ids.h>
#include <jffs2/jffs2.h>
#endif

#ifdef CONFIG_OMAP1510
void archflashwp(void *archdata, int wp);
#endif

#define ROUND_DOWN(value,boundary)      ((value) & (~((boundary)-1)))

#undef	NAND_DEBUG
#undef	PSYCHO_DEBUG

/* ****************** WARNING *********************
 * When ALLOW_ERASE_BAD_DEBUG is non-zero the erase command will
 * erase (or at least attempt to erase) blocks that are marked
 * bad. This can be very handy if you are _sure_ that the block
 * is OK, say because you marked a good block bad to test bad
 * block handling and you are done testing, or if you have
 * accidentally marked blocks bad.
 *
 * Erasing factory marked bad blocks is a _bad_ idea. If the
 * erase succeeds there is no reliable way to find them again,
 * and attempting to program or erase bad blocks can affect
 * the data in _other_ (good) blocks.
 */
#define	 ALLOW_ERASE_BAD_DEBUG 0

#define CONFIG_MTD_NAND_ECC  /* enable ECC */
#define CONFIG_MTD_NAND_ECC_JFFS2

/* bits for nand_legacy_rw() `cmd'; or together as needed */
#define NANDRW_READ         0x01
#define NANDRW_WRITE        0x00
#define NANDRW_JFFS2	    0x02
#define NANDRW_JFFS2_SKIP   0x04

/*
 * Imports from nand_legacy.c
 */
extern struct nand_chip nand_dev_desc[CFG_MAX_NAND_DEVICE];
extern int curr_device;
extern int nand_legacy_erase(struct nand_chip *nand, size_t ofs,
			    size_t len, int clean);
extern int nand_legacy_rw(struct nand_chip *nand, int cmd, size_t start,
			 size_t len, size_t *retlen, u_char *buf);
extern void nand_print(struct nand_chip *nand);
extern void nand_print_bad(struct nand_chip *nand);
extern int nand_read_oob(struct nand_chip *nand, size_t ofs,
			       size_t len, size_t *retlen, u_char *buf);
extern int nand_write_oob(struct nand_chip *nand, size_t ofs,
				size_t len, size_t *retlen, const u_char *buf);


int do_nand (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
{
	int rcode = 0;

	switch (argc) {
	case 0:
	case 1:
		printf ("Usage:\n%s\n", cmdtp->usage);
		return 1;
	case 2:
		if (strcmp (argv[1], "info") == 0) {
			int i;

			putc ('\n');

			for (i = 0; i < CFG_MAX_NAND_DEVICE; ++i) {
				if (nand_dev_desc[i].ChipID ==
				    NAND_ChipID_UNKNOWN)
					continue;	/* list only known devices */
				printf ("Device %d: ", i);
				nand_print (&nand_dev_desc[i]);
			}
			return 0;

		} else if (strcmp (argv[1], "device") == 0) {
			if ((curr_device < 0)
			    || (curr_device >= CFG_MAX_NAND_DEVICE)) {
				puts ("\nno devices available\n");
				return 1;
			}
			printf ("\nDevice %d: ", curr_device);
			nand_print (&nand_dev_desc[curr_device]);
			return 0;

		} else if (strcmp (argv[1], "bad") == 0) {
			if ((curr_device < 0)
			    || (curr_device >= CFG_MAX_NAND_DEVICE)) {
				puts ("\nno devices available\n");
				return 1;
			}
			printf ("\nDevice %d bad blocks:\n", curr_device);
			nand_print_bad (&nand_dev_desc[curr_device]);
			return 0;

		}
		printf ("Usage:\n%s\n", cmdtp->usage);
		return 1;
	case 3:
		if (strcmp (argv[1], "device") == 0) {
			int dev = (int) simple_strtoul (argv[2], NULL, 10);

			printf ("\nDevice %d: ", dev);
			if (dev >= CFG_MAX_NAND_DEVICE) {
				puts ("unknown device\n");
				return 1;
			}
			nand_print (&nand_dev_desc[dev]);
			/*nand_print (dev); */

			if (nand_dev_desc[dev].ChipID == NAND_ChipID_UNKNOWN) {
				return 1;
			}

			curr_device = dev;

			puts ("... is now current device\n");

			return 0;
		} else if (strcmp (argv[1], "erase") == 0
			   && strcmp (argv[2], "clean") == 0) {
			struct nand_chip *nand = &nand_dev_desc[curr_device];
			ulong off = 0;
			ulong size = nand->totlen;
			int ret;

			printf ("\nNAND erase: device %d offset %ld, size %ld ... ", curr_device, off, size);

			ret = nand_legacy_erase (nand, off, size, 1);

			printf ("%s\n", ret ? "ERROR" : "OK");

			return ret;
		}

		printf ("Usage:\n%s\n", cmdtp->usage);
		return 1;
	default:
		/* at least 4 args */

		if (strncmp (argv[1], "read", 4) == 0 ||
		    strncmp (argv[1], "write", 5) == 0) {
			ulong addr = simple_strtoul (argv[2], NULL, 16);
			off_t off = simple_strtoul (argv[3], NULL, 16);
			size_t size = simple_strtoul (argv[4], NULL, 16);
			int cmd = (strncmp (argv[1], "read", 4) == 0) ?
			          NANDRW_READ : NANDRW_WRITE;
			size_t total;
			int ret;
			char *cmdtail = strchr (argv[1], '.');

			if (cmdtail && !strncmp (cmdtail, ".oob", 2)) {
				/* read out-of-band data */
				if (cmd & NANDRW_READ) {
					ret = nand_read_oob (nand_dev_desc + curr_device,
							     off, size, &total,
							     (u_char *) addr);
				} else {
					ret = nand_write_oob (nand_dev_desc + curr_device,
							      off, size, &total,
							      (u_char *) addr);
				}
				return ret;
			} else if (cmdtail && !strncmp (cmdtail, ".jffs2", 2))
				cmd |= NANDRW_JFFS2;	/* skip bad blocks */
			else if (cmdtail && !strncmp (cmdtail, ".jffs2s", 2)) {
				cmd |= NANDRW_JFFS2;	/* skip bad blocks (on read too) */
				if (cmd & NANDRW_READ)
					cmd |= NANDRW_JFFS2_SKIP;	/* skip bad blocks (on read too) */
			}
#ifdef SXNI855T
			/* need ".e" same as ".j" for compatibility with older units */
			else if (cmdtail && !strcmp (cmdtail, ".e"))
				cmd |= NANDRW_JFFS2;	/* skip bad blocks */
#endif
#ifdef CFG_NAND_SKIP_BAD_DOT_I
			/* need ".i" same as ".jffs2s" for compatibility with older units (esd) */
			/* ".i" for image -> read skips bad block (no 0xff) */
			else if (cmdtail && !strcmp (cmdtail, ".i")) {
				cmd |= NANDRW_JFFS2;	/* skip bad blocks (on read too) */
				if (cmd & NANDRW_READ)
					cmd |= NANDRW_JFFS2_SKIP;	/* skip bad blocks (on read too) */
			}
#endif /* CFG_NAND_SKIP_BAD_DOT_I */
			else if (cmdtail) {
				printf ("Usage:\n%s\n", cmdtp->usage);
				return 1;
			}

			printf ("\nNAND %s: device %d offset %ld, size %lu ...\n",
				(cmd & NANDRW_READ) ? "read" : "write",
				curr_device, off, (ulong)size);

			ret = nand_legacy_rw (nand_dev_desc + curr_device,
					      cmd, off, size,
					      &total, (u_char *) addr);

			printf (" %d bytes %s: %s\n", total,
				(cmd & NANDRW_READ) ? "read" : "written",
				ret ? "ERROR" : "OK");

			return ret;
		} else if (strcmp (argv[1], "erase") == 0 &&
			   (argc == 4 || strcmp ("clean", argv[2]) == 0)) {
			int clean = argc == 5;
			ulong off =
				simple_strtoul (argv[2 + clean], NULL, 16);
			ulong size =
				simple_strtoul (argv[3 + clean], NULL, 16);
			int ret;

			printf ("\nNAND erase: device %d offset %ld, size %ld ...\n",
				curr_device, off, size);

			ret = nand_legacy_erase (nand_dev_desc + curr_device,
						 off, size, clean);

			printf ("%s\n", ret ? "ERROR" : "OK");

			return ret;
		} else {
			printf ("Usage:\n%s\n", cmdtp->usage);
			rcode = 1;
		}

		return rcode;
	}
}

U_BOOT_CMD(
	nand,	5,	1,	do_nand,
	"nand    - legacy NAND sub-system\n",
	"info  - show available NAND devices\n"
	"nand device [dev] - show or set current device\n"
	"nand read[.jffs2[s]]  addr off size\n"
	"nand write[.jffs2] addr off size - read/write `size' bytes starting\n"
	"    at offset `off' to/from memory address `addr'\n"
	"nand erase [clean] [off size] - erase `size' bytes from\n"
	"    offset `off' (entire device if not specified)\n"
	"nand bad - show bad blocks\n"
	"nand read.oob addr off size - read out-of-band data\n"
	"nand write.oob addr off size - read out-of-band data\n"
);

int do_nandboot (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
	char *boot_device = NULL;
	char *ep;
	int dev;
	ulong cnt;
	ulong addr;
	ulong offset = 0;
	image_header_t *hdr;
	int rcode = 0;
#if defined(CONFIG_FIT)
	const void *fit_hdr = NULL;
#endif

	show_boot_progress (52);
	switch (argc) {
	case 1:
		addr = CFG_LOAD_ADDR;
		boot_device = getenv ("bootdevice");
		break;
	case 2:
		addr = simple_strtoul(argv[1], NULL, 16);
		boot_device = getenv ("bootdevice");
		break;
	case 3:
		addr = simple_strtoul(argv[1], NULL, 16);
		boot_device = argv[2];
		break;
	case 4:
		addr = simple_strtoul(argv[1], NULL, 16);
		boot_device = argv[2];
		offset = simple_strtoul(argv[3], NULL, 16);
		break;
	default:
		printf ("Usage:\n%s\n", cmdtp->usage);
		show_boot_progress (-53);
		return 1;
	}

	show_boot_progress (53);
	if (!boot_device) {
		puts ("\n** No boot device **\n");
		show_boot_progress (-54);
		return 1;
	}
	show_boot_progress (54);

	dev = simple_strtoul(boot_device, &ep, 16);

	if ((dev >= CFG_MAX_NAND_DEVICE) ||
	    (nand_dev_desc[dev].ChipID == NAND_ChipID_UNKNOWN)) {
		printf ("\n** Device %d not available\n", dev);
		show_boot_progress (-55);
		return 1;
	}
	show_boot_progress (55);

	printf ("\nLoading from device %d: %s at 0x%lx (offset 0x%lx)\n",
	    dev, nand_dev_desc[dev].name, nand_dev_desc[dev].IO_ADDR,
	    offset);

	if (nand_legacy_rw (nand_dev_desc + dev, NANDRW_READ, offset,
	                    SECTORSIZE, NULL, (u_char *)addr)) {
		printf ("** Read error on %d\n", dev);
		show_boot_progress (-56);
		return 1;
	}
	show_boot_progress (56);

	switch (genimg_get_format ((void *)addr)) {
	case IMAGE_FORMAT_LEGACY:
		hdr = (image_header_t *)addr;
		image_print_contents (hdr);

		cnt = image_get_image_size (hdr);
		cnt -= SECTORSIZE;
		break;
#if defined(CONFIG_FIT)
	case IMAGE_FORMAT_FIT:
		fit_hdr = (const void *)addr;
		puts ("Fit image detected...\n");

		cnt = fit_get_size (fit_hdr);
		break;
#endif
	default:
		show_boot_progress (-57);
		puts ("** Unknown image type\n");
		return 1;
	}
	show_boot_progress (57);

	if (nand_legacy_rw (nand_dev_desc + dev, NANDRW_READ,
	                    offset + SECTORSIZE, cnt, NULL,
	                    (u_char *)(addr+SECTORSIZE))) {
		printf ("** Read error on %d\n", dev);
		show_boot_progress (-58);
		return 1;
	}
	show_boot_progress (58);

#if defined(CONFIG_FIT)
	/* This cannot be done earlier, we need complete FIT image in RAM first */
	if (genimg_get_format ((void *)addr) == IMAGE_FORMAT_FIT) {
		if (!fit_check_format (fit_hdr)) {
			show_boot_progress (-150);
			puts ("** Bad FIT image format\n");
			return 1;
		}
		show_boot_progress (151);
		fit_print_contents (fit_hdr);
	}
#endif

	/* Loading ok, update default load address */

	load_addr = addr;

	/* Check if we should attempt an auto-start */
	if (((ep = getenv("autostart")) != NULL) && (strcmp(ep,"yes") == 0)) {
		char *local_args[2];
		extern int do_bootm (cmd_tbl_t *, int, int, char *[]);

		local_args[0] = argv[0];
		local_args[1] = NULL;

		printf ("Automatic boot of image at addr 0x%08lx ...\n", addr);

		do_bootm (cmdtp, 0, 1, local_args);
		rcode = 1;
	}
	return rcode;
}

U_BOOT_CMD(
	nboot,	4,	1,	do_nandboot,
	"nboot   - boot from NAND device\n",
	"loadAddr dev\n"
);

#endif

#endif /* CFG_NAND_LEGACY */