summaryrefslogtreecommitdiffstats
path: root/cmd/mtdparts.c
blob: dab195841a74fbeed0104e0f6d6f55328b682472 (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
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
/*
 * (C) Copyright 2002
 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 *
 * (C) Copyright 2002
 * Robert Schwebel, Pengutronix, <r.schwebel@pengutronix.de>
 *
 * (C) Copyright 2003
 * Kai-Uwe Bloem, Auerswald GmbH & Co KG, <linux-development@auerswald.de>
 *
 * (C) Copyright 2005
 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 *
 *   Added support for reading flash partition table from environment.
 *   Parsing routines are based on driver/mtd/cmdline.c from the linux 2.4
 *   kernel tree.
 *
 * (C) Copyright 2008
 * Harald Welte, OpenMoko, Inc., Harald Welte <laforge@openmoko.org>
 *
 *   $Id: cmdlinepart.c,v 1.17 2004/11/26 11:18:47 lavinen Exp $
 *   Copyright 2002 SYSGO Real-Time Solutions GmbH
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

/*
 * Three environment variables are used by the parsing routines:
 *
 * 'partition' - keeps current partition identifier
 *
 * partition  := <part-id>
 * <part-id>  := <dev-id>,part_num
 *
 *
 * 'mtdids' - linux kernel mtd device id <-> u-boot device id mapping
 *
 * mtdids=<idmap>[,<idmap>,...]
 *
 * <idmap>    := <dev-id>=<mtd-id>
 * <dev-id>   := 'nand'|'nor'|'onenand'<dev-num>
 * <dev-num>  := mtd device number, 0...
 * <mtd-id>   := unique device tag used by linux kernel to find mtd device (mtd->name)
 *
 *
 * 'mtdparts' - partition list
 *
 * mtdparts=mtdparts=<mtd-def>[;<mtd-def>...]
 *
 * <mtd-def>  := <mtd-id>:<part-def>[,<part-def>...]
 * <mtd-id>   := unique device tag used by linux kernel to find mtd device (mtd->name)
 * <part-def> := <size>[@<offset>][<name>][<ro-flag>]
 * <size>     := standard linux memsize OR '-' to denote all remaining space
 * <offset>   := partition start offset within the device
 * <name>     := '(' NAME ')'
 * <ro-flag>  := when set to 'ro' makes partition read-only (not used, passed to kernel)
 *
 * Notes:
 * - each <mtd-id> used in mtdparts must albo exist in 'mtddis' mapping
 * - if the above variables are not set defaults for a given target are used
 *
 * Examples:
 *
 * 1 NOR Flash, with 1 single writable partition:
 * mtdids=nor0=edb7312-nor
 * mtdparts=mtdparts=edb7312-nor:-
 *
 * 1 NOR Flash with 2 partitions, 1 NAND with one
 * mtdids=nor0=edb7312-nor,nand0=edb7312-nand
 * mtdparts=mtdparts=edb7312-nor:256k(ARMboot)ro,-(root);edb7312-nand:-(home)
 *
 */

#include <common.h>
#include <command.h>
#include <malloc.h>
#include <jffs2/load_kernel.h>
#include <linux/list.h>
#include <linux/ctype.h>
#include <linux/err.h>
#include <linux/mtd/mtd.h>

#if defined(CONFIG_CMD_NAND)
#include <linux/mtd/nand.h>
#include <nand.h>
#endif

#if defined(CONFIG_CMD_ONENAND)
#include <linux/mtd/onenand.h>
#include <onenand_uboot.h>
#endif

DECLARE_GLOBAL_DATA_PTR;

/* special size referring to all the remaining space in a partition */
#define SIZE_REMAINING		(~0llu)

/* special offset value, it is used when not provided by user
 *
 * this value is used temporarily during parsing, later such offests
 * are recalculated */
#define OFFSET_NOT_SPECIFIED	(~0llu)

/* minimum partition size */
#define MIN_PART_SIZE		4096

/* this flag needs to be set in part_info struct mask_flags
 * field for read-only partitions */
#define MTD_WRITEABLE_CMD		1

/* default values for mtdids and mtdparts variables */
#if defined(MTDIDS_DEFAULT)
static const char *const mtdids_default = MTDIDS_DEFAULT;
#else
static const char *const mtdids_default = NULL;
#endif

#if defined(MTDPARTS_DEFAULT)
static const char *const mtdparts_default = MTDPARTS_DEFAULT;
#else
static const char *const mtdparts_default = NULL;
#endif

/* copies of last seen 'mtdids', 'mtdparts' and 'partition' env variables */
#define MTDIDS_MAXLEN		128
#define MTDPARTS_MAXLEN		512
#define PARTITION_MAXLEN	16
static char last_ids[MTDIDS_MAXLEN];
static char last_parts[MTDPARTS_MAXLEN];
static char last_partition[PARTITION_MAXLEN];

/* low level jffs2 cache cleaning routine */
extern void jffs2_free_cache(struct part_info *part);

/* mtdids mapping list, filled by parse_ids() */
static struct list_head mtdids;

/* device/partition list, parse_cmdline() parses into here */
static struct list_head devices;

/* current active device and partition number */
struct mtd_device *current_mtd_dev = NULL;
u8 current_mtd_partnum = 0;

static struct part_info* mtd_part_info(struct mtd_device *dev, unsigned int part_num);

/* command line only routines */
static struct mtdids* id_find_by_mtd_id(const char *mtd_id, unsigned int mtd_id_len);
static int device_del(struct mtd_device *dev);

/**
 * Parses a string into a number.  The number stored at ptr is
 * potentially suffixed with K (for kilobytes, or 1024 bytes),
 * M (for megabytes, or 1048576 bytes), or G (for gigabytes, or
 * 1073741824).  If the number is suffixed with K, M, or G, then
 * the return value is the number multiplied by one kilobyte, one
 * megabyte, or one gigabyte, respectively.
 *
 * @param ptr where parse begins
 * @param retptr output pointer to next char after parse completes (output)
 * @return resulting unsigned int
 */
static u64 memsize_parse (const char *const ptr, const char **retptr)
{
	u64 ret = simple_strtoull(ptr, (char **)retptr, 0);

	switch (**retptr) {
		case 'G':
		case 'g':
			ret <<= 10;
		case 'M':
		case 'm':
			ret <<= 10;
		case 'K':
		case 'k':
			ret <<= 10;
			(*retptr)++;
		default:
			break;
	}

	return ret;
}

/**
 * Format string describing supplied size. This routine does the opposite job
 * to memsize_parse(). Size in bytes is converted to string and if possible
 * shortened by using k (kilobytes), m (megabytes) or g (gigabytes) suffix.
 *
 * Note, that this routine does not check for buffer overflow, it's the caller
 * who must assure enough space.
 *
 * @param buf output buffer
 * @param size size to be converted to string
 */
static void memsize_format(char *buf, u64 size)
{
#define SIZE_GB ((u32)1024*1024*1024)
#define SIZE_MB ((u32)1024*1024)
#define SIZE_KB ((u32)1024)

	if ((size % SIZE_GB) == 0)
		sprintf(buf, "%llug", size/SIZE_GB);
	else if ((size % SIZE_MB) == 0)
		sprintf(buf, "%llum", size/SIZE_MB);
	else if (size % SIZE_KB == 0)
		sprintf(buf, "%lluk", size/SIZE_KB);
	else
		sprintf(buf, "%llu", size);
}

/**
 * This routine does global indexing of all partitions. Resulting index for
 * current partition is saved in 'mtddevnum'. Current partition name in
 * 'mtddevname'.
 */
static void index_partitions(void)
{
	u16 mtddevnum;
	struct part_info *part;
	struct list_head *dentry;
	struct mtd_device *dev;

	debug("--- index partitions ---\n");

	if (current_mtd_dev) {
		mtddevnum = 0;
		list_for_each(dentry, &devices) {
			dev = list_entry(dentry, struct mtd_device, link);
			if (dev == current_mtd_dev) {
				mtddevnum += current_mtd_partnum;
				setenv_ulong("mtddevnum", mtddevnum);
				break;
			}
			mtddevnum += dev->num_parts;
		}

		part = mtd_part_info(current_mtd_dev, current_mtd_partnum);
		setenv("mtddevname", part->name);

		debug("=> mtddevnum %d,\n=> mtddevname %s\n", mtddevnum, part->name);
	} else {
		setenv("mtddevnum", NULL);
		setenv("mtddevname", NULL);

		debug("=> mtddevnum NULL\n=> mtddevname NULL\n");
	}
}

/**
 * Save current device and partition in environment variable 'partition'.
 */
static void current_save(void)
{
	char buf[16];

	debug("--- current_save ---\n");

	if (current_mtd_dev) {
		sprintf(buf, "%s%d,%d", MTD_DEV_TYPE(current_mtd_dev->id->type),
					current_mtd_dev->id->num, current_mtd_partnum);

		setenv("partition", buf);
		strncpy(last_partition, buf, 16);

		debug("=> partition %s\n", buf);
	} else {
		setenv("partition", NULL);
		last_partition[0] = '\0';

		debug("=> partition NULL\n");
	}
	index_partitions();
}


/**
 * Produce a mtd_info given a type and num.
 *
 * @param type mtd type
 * @param num mtd number
 * @param mtd a pointer to an mtd_info instance (output)
 * @return 0 if device is valid, 1 otherwise
 */
static int get_mtd_info(u8 type, u8 num, struct mtd_info **mtd)
{
	char mtd_dev[16];

	sprintf(mtd_dev, "%s%d", MTD_DEV_TYPE(type), num);
	*mtd = get_mtd_device_nm(mtd_dev);
	if (IS_ERR(*mtd)) {
		printf("Device %s not found!\n", mtd_dev);
		return 1;
	}
	put_mtd_device(*mtd);

	return 0;
}

/**
 * Performs sanity check for supplied flash partition.
 * Table of existing MTD flash devices is searched and partition device
 * is located. Alignment with the granularity of nand erasesize is verified.
 *
 * @param id of the parent device
 * @param part partition to validate
 * @return 0 if partition is valid, 1 otherwise
 */
static int part_validate_eraseblock(struct mtdids *id, struct part_info *part)
{
	struct mtd_info *mtd = NULL;
	int i, j;
	ulong start;
	u64 offset, size;

	if (get_mtd_info(id->type, id->num, &mtd))
		return 1;

	part->sector_size = mtd->erasesize;

	if (!mtd->numeraseregions) {
		/*
		 * Only one eraseregion (NAND, OneNAND or uniform NOR),
		 * checking for alignment is easy here
		 */
		offset = part->offset;
		if (do_div(offset, mtd->erasesize)) {
			printf("%s%d: partition (%s) start offset"
			       "alignment incorrect\n",
			       MTD_DEV_TYPE(id->type), id->num, part->name);
			return 1;
		}

		size = part->size;
		if (do_div(size, mtd->erasesize)) {
			printf("%s%d: partition (%s) size alignment incorrect\n",
			       MTD_DEV_TYPE(id->type), id->num, part->name);
			return 1;
		}
	} else {
		/*
		 * Multiple eraseregions (non-uniform NOR),
		 * checking for alignment is more complex here
		 */

		/* Check start alignment */
		for (i = 0; i < mtd->numeraseregions; i++) {
			start = mtd->eraseregions[i].offset;
			for (j = 0; j < mtd->eraseregions[i].numblocks; j++) {
				if (part->offset == start)
					goto start_ok;
				start += mtd->eraseregions[i].erasesize;
			}
		}

		printf("%s%d: partition (%s) start offset alignment incorrect\n",
		       MTD_DEV_TYPE(id->type), id->num, part->name);
		return 1;

	start_ok:

		/* Check end/size alignment */
		for (i = 0; i < mtd->numeraseregions; i++) {
			start = mtd->eraseregions[i].offset;
			for (j = 0; j < mtd->eraseregions[i].numblocks; j++) {
				if ((part->offset + part->size) == start)
					goto end_ok;
				start += mtd->eraseregions[i].erasesize;
			}
		}
		/* Check last sector alignment */
		if ((part->offset + part->size) == start)
			goto end_ok;

		printf("%s%d: partition (%s) size alignment incorrect\n",
		       MTD_DEV_TYPE(id->type), id->num, part->name);
		return 1;

	end_ok:
		return 0;
	}

	return 0;
}


/**
 * Performs sanity check for supplied partition. Offset and size are
 * verified to be within valid range. Partition type is checked and
 * part_validate_eraseblock() is called with the argument of part.
 *
 * @param id of the parent device
 * @param part partition to validate
 * @return 0 if partition is valid, 1 otherwise
 */
static int part_validate(struct mtdids *id, struct part_info *part)
{
	if (part->size == SIZE_REMAINING)
		part->size = id->size - part->offset;

	if (part->offset > id->size) {
		printf("%s: offset %08llx beyond flash size %08llx\n",
				id->mtd_id, part->offset, id->size);
		return 1;
	}

	if ((part->offset + part->size) <= part->offset) {
		printf("%s%d: partition (%s) size too big\n",
				MTD_DEV_TYPE(id->type), id->num, part->name);
		return 1;
	}

	if (part->offset + part->size > id->size) {
		printf("%s: partitioning exceeds flash size\n", id->mtd_id);
		return 1;
	}

	/*
	 * Now we need to check if the partition starts and ends on
	 * sector (eraseblock) regions
	 */
	return part_validate_eraseblock(id, part);
}

/**
 * Delete selected partition from the partition list of the specified device.
 *
 * @param dev device to delete partition from
 * @param part partition to delete
 * @return 0 on success, 1 otherwise
 */
static int part_del(struct mtd_device *dev, struct part_info *part)
{
	u8 current_save_needed = 0;

	/* if there is only one partition, remove whole device */
	if (dev->num_parts == 1)
		return device_del(dev);

	/* otherwise just delete this partition */

	if (dev == current_mtd_dev) {
		/* we are modyfing partitions for the current device,
		 * update current */
		struct part_info *curr_pi;
		curr_pi = mtd_part_info(current_mtd_dev, current_mtd_partnum);

		if (curr_pi) {
			if (curr_pi == part) {
				printf("current partition deleted, resetting current to 0\n");
				current_mtd_partnum = 0;
			} else if (part->offset <= curr_pi->offset) {
				current_mtd_partnum--;
			}
			current_save_needed = 1;
		}
	}

	list_del(&part->link);
	free(part);
	dev->num_parts--;

	if (current_save_needed > 0)
		current_save();
	else
		index_partitions();

	return 0;
}

/**
 * Delete all partitions from parts head list, free memory.
 *
 * @param head list of partitions to delete
 */
static void part_delall(struct list_head *head)
{
	struct list_head *entry, *n;
	struct part_info *part_tmp;

	/* clean tmp_list and free allocated memory */
	list_for_each_safe(entry, n, head) {
		part_tmp = list_entry(entry, struct part_info, link);

		list_del(entry);
		free(part_tmp);
	}
}

/**
 * Add new partition to the supplied partition list. Make sure partitions are
 * sorted by offset in ascending order.
 *
 * @param head list this partition is to be added to
 * @param new partition to be added
 */
static int part_sort_add(struct mtd_device *dev, struct part_info *part)
{
	struct list_head *entry;
	struct part_info *new_pi, *curr_pi;

	/* link partition to parrent dev */
	part->dev = dev;

	if (list_empty(&dev->parts)) {
		debug("part_sort_add: list empty\n");
		list_add(&part->link, &dev->parts);
		dev->num_parts++;
		index_partitions();
		return 0;
	}

	new_pi = list_entry(&part->link, struct part_info, link);

	/* get current partition info if we are updating current device */
	curr_pi = NULL;
	if (dev == current_mtd_dev)
		curr_pi = mtd_part_info(current_mtd_dev, current_mtd_partnum);

	list_for_each(entry, &dev->parts) {
		struct part_info *pi;

		pi = list_entry(entry, struct part_info, link);

		/* be compliant with kernel cmdline, allow only one partition at offset zero */
		if ((new_pi->offset == pi->offset) && (pi->offset == 0)) {
			printf("cannot add second partition at offset 0\n");
			return 1;
		}

		if (new_pi->offset <= pi->offset) {
			list_add_tail(&part->link, entry);
			dev->num_parts++;

			if (curr_pi && (pi->offset <= curr_pi->offset)) {
				/* we are modyfing partitions for the current
				 * device, update current */
				current_mtd_partnum++;
				current_save();
			} else {
				index_partitions();
			}
			return 0;
		}
	}

	list_add_tail(&part->link, &dev->parts);
	dev->num_parts++;
	index_partitions();
	return 0;
}

/**
 * Add provided partition to the partition list of a given device.
 *
 * @param dev device to which partition is added
 * @param part partition to be added
 * @return 0 on success, 1 otherwise
 */
static int part_add(struct mtd_device *dev, struct part_info *part)
{
	/* verify alignment and size */
	if (part_validate(dev->id, part) != 0)
		return 1;

	/* partition is ok, add it to the list */
	if (part_sort_add(dev, part) != 0)
		return 1;

	return 0;
}

/**
 * Parse one partition definition, allocate memory and return pointer to this
 * location in retpart.
 *
 * @param partdef pointer to the partition definition string i.e. <part-def>
 * @param ret output pointer to next char after parse completes (output)
 * @param retpart pointer to the allocated partition (output)
 * @return 0 on success, 1 otherwise
 */
static int part_parse(const char *const partdef, const char **ret, struct part_info **retpart)
{
	struct part_info *part;
	u64 size;
	u64 offset;
	const char *name;
	int name_len;
	unsigned int mask_flags;
	const char *p;

	p = partdef;
	*retpart = NULL;
	*ret = NULL;

	/* fetch the partition size */
	if (*p == '-') {
		/* assign all remaining space to this partition */
		debug("'-': remaining size assigned\n");
		size = SIZE_REMAINING;
		p++;
	} else {
		size = memsize_parse(p, &p);
		if (size < MIN_PART_SIZE) {
			printf("partition size too small (%llx)\n", size);
			return 1;
		}
	}

	/* check for offset */
	offset = OFFSET_NOT_SPECIFIED;
	if (*p == '@') {
		p++;
		offset = memsize_parse(p, &p);
	}

	/* now look for the name */
	if (*p == '(') {
		name = ++p;
		if ((p = strchr(name, ')')) == NULL) {
			printf("no closing ) found in partition name\n");
			return 1;
		}
		name_len = p - name + 1;
		if ((name_len - 1) == 0) {
			printf("empty partition name\n");
			return 1;
		}
		p++;
	} else {
		/* 0x00000000@0x00000000 */
		name_len = 22;
		name = NULL;
	}

	/* test for options */
	mask_flags = 0;
	if (strncmp(p, "ro", 2) == 0) {
		mask_flags |= MTD_WRITEABLE_CMD;
		p += 2;
	}

	/* check for next partition definition */
	if (*p == ',') {
		if (size == SIZE_REMAINING) {
			*ret = NULL;
			printf("no partitions allowed after a fill-up partition\n");
			return 1;
		}
		*ret = ++p;
	} else if ((*p == ';') || (*p == '\0')) {
		*ret = p;
	} else {
		printf("unexpected character '%c' at the end of partition\n", *p);
		*ret = NULL;
		return 1;
	}

	/*  allocate memory */
	part = (struct part_info *)malloc(sizeof(struct part_info) + name_len);
	if (!part) {
		printf("out of memory\n");
		return 1;
	}
	memset(part, 0, sizeof(struct part_info) + name_len);
	part->size = size;
	part->offset = offset;
	part->mask_flags = mask_flags;
	part->name = (char *)(part + 1);

	if (name) {
		/* copy user provided name */
		strncpy(part->name, name, name_len - 1);
		part->auto_name = 0;
	} else {
		/* auto generated name in form of size@offset */
		sprintf(part->name, "0x%08llx@0x%08llx", size, offset);
		part->auto_name = 1;
	}

	part->name[name_len - 1] = '\0';
	INIT_LIST_HEAD(&part->link);

	debug("+ partition: name %-22s size 0x%08llx offset 0x%08llx mask flags %d\n",
			part->name, part->size,
			part->offset, part->mask_flags);

	*retpart = part;
	return 0;
}

/**
 * Check device number to be within valid range for given device type.
 *
 * @param type mtd type
 * @param num mtd number
 * @param size a pointer to the size of the mtd device (output)
 * @return 0 if device is valid, 1 otherwise
 */
static int mtd_device_validate(u8 type, u8 num, u64 *size)
{
	struct mtd_info *mtd = NULL;

	if (get_mtd_info(type, num, &mtd))
		return 1;

	*size = mtd->size;

	return 0;
}

/**
 * Delete all mtd devices from a supplied devices list, free memory allocated for
 * each device and delete all device partitions.
 *
 * @return 0 on success, 1 otherwise
 */
static int device_delall(struct list_head *head)
{
	struct list_head *entry, *n;
	struct mtd_device *dev_tmp;

	/* clean devices list */
	list_for_each_safe(entry, n, head) {
		dev_tmp = list_entry(entry, struct mtd_device, link);
		list_del(entry);
		part_delall(&dev_tmp->parts);
		free(dev_tmp);
	}
	INIT_LIST_HEAD(&devices);

	return 0;
}

/**
 * If provided device exists it's partitions are deleted, device is removed
 * from device list and device memory is freed.
 *
 * @param dev device to be deleted
 * @return 0 on success, 1 otherwise
 */
static int device_del(struct mtd_device *dev)
{
	part_delall(&dev->parts);
	list_del(&dev->link);
	free(dev);

	if (dev == current_mtd_dev) {
		/* we just deleted current device */
		if (list_empty(&devices)) {
			current_mtd_dev = NULL;
		} else {
			/* reset first partition from first dev from the
			 * devices list as current */
			current_mtd_dev = list_entry(devices.next, struct mtd_device, link);
			current_mtd_partnum = 0;
		}
		current_save();
		return 0;
	}

	index_partitions();
	return 0;
}

/**
 * Search global device list and return pointer to the device of type and num
 * specified.
 *
 * @param type device type
 * @param num device number
 * @return NULL if requested device does not exist
 */
struct mtd_device *device_find(u8 type, u8 num)
{
	struct list_head *entry;
	struct mtd_device *dev_tmp;

	list_for_each(entry, &devices) {
		dev_tmp = list_entry(entry, struct mtd_device, link);

		if ((dev_tmp->id->type == type) && (dev_tmp->id->num == num))
			return dev_tmp;
	}

	return NULL;
}

/**
 * Add specified device to the global device list.
 *
 * @param dev device to be added
 */
static void device_add(struct mtd_device *dev)
{
	u8 current_save_needed = 0;

	if (list_empty(&devices)) {
		current_mtd_dev = dev;
		current_mtd_partnum = 0;
		current_save_needed = 1;
	}

	list_add_tail(&dev->link, &devices);

	if (current_save_needed > 0)
		current_save();
	else
		index_partitions();
}

/**
 * Parse device type, name and mtd-id. If syntax is ok allocate memory and
 * return pointer to the device structure.
 *
 * @param mtd_dev pointer to the device definition string i.e. <mtd-dev>
 * @param ret output pointer to next char after parse completes (output)
 * @param retdev pointer to the allocated device (output)
 * @return 0 on success, 1 otherwise
 */
static int device_parse(const char *const mtd_dev, const char **ret, struct mtd_device **retdev)
{
	struct mtd_device *dev;
	struct part_info *part;
	struct mtdids *id;
	const char *mtd_id;
	unsigned int mtd_id_len;
	const char *p;
	const char *pend;
	LIST_HEAD(tmp_list);
	struct list_head *entry, *n;
	u16 num_parts;
	u64 offset;
	int err = 1;

	debug("===device_parse===\n");

	assert(retdev);
	*retdev = NULL;

	if (ret)
		*ret = NULL;

	/* fetch <mtd-id> */
	mtd_id = p = mtd_dev;
	if (!(p = strchr(mtd_id, ':'))) {
		printf("no <mtd-id> identifier\n");
		return 1;
	}
	mtd_id_len = p - mtd_id + 1;
	p++;

	/* verify if we have a valid device specified */
	if ((id = id_find_by_mtd_id(mtd_id, mtd_id_len - 1)) == NULL) {
		printf("invalid mtd device '%.*s'\n", mtd_id_len - 1, mtd_id);
		return 1;
	}

#ifdef DEBUG
	pend = strchr(p, ';');
#endif
	debug("dev type = %d (%s), dev num = %d, mtd-id = %s\n",
			id->type, MTD_DEV_TYPE(id->type),
			id->num, id->mtd_id);
	debug("parsing partitions %.*s\n", (int)(pend ? pend - p : strlen(p)), p);


	/* parse partitions */
	num_parts = 0;

	offset = 0;
	if ((dev = device_find(id->type, id->num)) != NULL) {
		/* if device already exists start at the end of the last partition */
		part = list_entry(dev->parts.prev, struct part_info, link);
		offset = part->offset + part->size;
	}

	while (p && (*p != '\0') && (*p != ';')) {
		err = 1;
		if ((part_parse(p, &p, &part) != 0) || (!part))
			break;

		/* calculate offset when not specified */
		if (part->offset == OFFSET_NOT_SPECIFIED)
			part->offset = offset;
		else
			offset = part->offset;

		/* verify alignment and size */
		if (part_validate(id, part) != 0)
			break;

		offset += part->size;

		/* partition is ok, add it to the list */
		list_add_tail(&part->link, &tmp_list);
		num_parts++;
		err = 0;
	}
	if (err == 1) {
		part_delall(&tmp_list);
		return 1;
	}

	if (num_parts == 0) {
		printf("no partitions for device %s%d (%s)\n",
				MTD_DEV_TYPE(id->type), id->num, id->mtd_id);
		return 1;
	}

	debug("\ntotal partitions: %d\n", num_parts);

	/* check for next device presence */
	if (p) {
		if (*p == ';') {
			if (ret)
				*ret = ++p;
		} else if (*p == '\0') {
			if (ret)
				*ret = p;
		} else {
			printf("unexpected character '%c' at the end of device\n", *p);
			if (ret)
				*ret = NULL;
			return 1;
		}
	}

	/* allocate memory for mtd_device structure */
	if ((dev = (struct mtd_device *)malloc(sizeof(struct mtd_device))) == NULL) {
		printf("out of memory\n");
		return 1;
	}
	memset(dev, 0, sizeof(struct mtd_device));
	dev->id = id;
	dev->num_parts = 0; /* part_sort_add increments num_parts */
	INIT_LIST_HEAD(&dev->parts);
	INIT_LIST_HEAD(&dev->link);

	/* move partitions from tmp_list to dev->parts */
	list_for_each_safe(entry, n, &tmp_list) {
		part = list_entry(entry, struct part_info, link);
		list_del(entry);
		if (part_sort_add(dev, part) != 0) {
			device_del(dev);
			return 1;
		}
	}

	*retdev = dev;

	debug("===\n\n");
	return 0;
}

/**
 * Initialize global device list.
 *
 * @return 0 on success, 1 otherwise
 */
static int mtd_devices_init(void)
{
	last_parts[0] = '\0';
	current_mtd_dev = NULL;
	current_save();

	return device_delall(&devices);
}

/*
 * Search global mtdids list and find id of requested type and number.
 *
 * @return pointer to the id if it exists, NULL otherwise
 */
static struct mtdids* id_find(u8 type, u8 num)
{
	struct list_head *entry;
	struct mtdids *id;

	list_for_each(entry, &mtdids) {
		id = list_entry(entry, struct mtdids, link);

		if ((id->type == type) && (id->num == num))
			return id;
	}

	return NULL;
}

/**
 * Search global mtdids list and find id of a requested mtd_id.
 *
 * Note: first argument is not null terminated.
 *
 * @param mtd_id string containing requested mtd_id
 * @param mtd_id_len length of supplied mtd_id
 * @return pointer to the id if it exists, NULL otherwise
 */
static struct mtdids* id_find_by_mtd_id(const char *mtd_id, unsigned int mtd_id_len)
{
	struct list_head *entry;
	struct mtdids *id;

	debug("--- id_find_by_mtd_id: '%.*s' (len = %d)\n",
			mtd_id_len, mtd_id, mtd_id_len);

	list_for_each(entry, &mtdids) {
		id = list_entry(entry, struct mtdids, link);

		debug("entry: '%s' (len = %zu)\n",
				id->mtd_id, strlen(id->mtd_id));

		if (mtd_id_len != strlen(id->mtd_id))
			continue;
		if (strncmp(id->mtd_id, mtd_id, mtd_id_len) == 0)
			return id;
	}

	return NULL;
}

/**
 * Parse device id string <dev-id> := 'nand'|'nor'|'onenand'<dev-num>,
 * return device type and number.
 *
 * @param id string describing device id
 * @param ret_id output pointer to next char after parse completes (output)
 * @param dev_type parsed device type (output)
 * @param dev_num parsed device number (output)
 * @return 0 on success, 1 otherwise
 */
int mtd_id_parse(const char *id, const char **ret_id, u8 *dev_type,
		 u8 *dev_num)
{
	const char *p = id;

	*dev_type = 0;
	if (strncmp(p, "nand", 4) == 0) {
		*dev_type = MTD_DEV_TYPE_NAND;
		p += 4;
	} else if (strncmp(p, "nor", 3) == 0) {
		*dev_type = MTD_DEV_TYPE_NOR;
		p += 3;
	} else if (strncmp(p, "onenand", 7) == 0) {
		*dev_type = MTD_DEV_TYPE_ONENAND;
		p += 7;
	} else {
		printf("incorrect device type in %s\n", id);
		return 1;
	}

	if (!isdigit(*p)) {
		printf("incorrect device number in %s\n", id);
		return 1;
	}

	*dev_num = simple_strtoul(p, (char **)&p, 0);
	if (ret_id)
		*ret_id = p;
	return 0;
}

/**
 * Process all devices and generate corresponding mtdparts string describing
 * all partitions on all devices.
 *
 * @param buf output buffer holding generated mtdparts string (output)
 * @param buflen buffer size
 * @return 0 on success, 1 otherwise
 */
static int generate_mtdparts(char *buf, u32 buflen)
{
	struct list_head *pentry, *dentry;
	struct mtd_device *dev;
	struct part_info *part, *prev_part;
	char *p = buf;
	char tmpbuf[32];
	u64 size, offset;
	u32 len, part_cnt;
	u32 maxlen = buflen - 1;

	debug("--- generate_mtdparts ---\n");

	if (list_empty(&devices)) {
		buf[0] = '\0';
		return 0;
	}

	strcpy(p, "mtdparts=");
	p += 9;

	list_for_each(dentry, &devices) {
		dev = list_entry(dentry, struct mtd_device, link);

		/* copy mtd_id */
		len = strlen(dev->id->mtd_id) + 1;
		if (len > maxlen)
			goto cleanup;
		memcpy(p, dev->id->mtd_id, len - 1);
		p += len - 1;
		*(p++) = ':';
		maxlen -= len;

		/* format partitions */
		prev_part = NULL;
		part_cnt = 0;
		list_for_each(pentry, &dev->parts) {
			part = list_entry(pentry, struct part_info, link);
			size = part->size;
			offset = part->offset;
			part_cnt++;

			/* partition size */
			memsize_format(tmpbuf, size);
			len = strlen(tmpbuf);
			if (len > maxlen)
				goto cleanup;
			memcpy(p, tmpbuf, len);
			p += len;
			maxlen -= len;


			/* add offset only when there is a gap between
			 * partitions */
			if ((!prev_part && (offset != 0)) ||
					(prev_part && ((prev_part->offset + prev_part->size) != part->offset))) {

				memsize_format(tmpbuf, offset);
				len = strlen(tmpbuf) + 1;
				if (len > maxlen)
					goto cleanup;
				*(p++) = '@';
				memcpy(p, tmpbuf, len - 1);
				p += len - 1;
				maxlen -= len;
			}

			/* copy name only if user supplied */
			if(!part->auto_name) {
				len = strlen(part->name) + 2;
				if (len > maxlen)
					goto cleanup;

				*(p++) = '(';
				memcpy(p, part->name, len - 2);
				p += len - 2;
				*(p++) = ')';
				maxlen -= len;
			}

			/* ro mask flag */
			if (part->mask_flags && MTD_WRITEABLE_CMD) {
				len = 2;
				if (len > maxlen)
					goto cleanup;
				*(p++) = 'r';
				*(p++) = 'o';
				maxlen -= 2;
			}

			/* print ',' separator if there are other partitions
			 * following */
			if (dev->num_parts > part_cnt) {
				if (1 > maxlen)
					goto cleanup;
				*(p++) = ',';
				maxlen--;
			}
			prev_part = part;
		}
		/* print ';' separator if there are other devices following */
		if (dentry->next != &devices) {
			if (1 > maxlen)
				goto cleanup;
			*(p++) = ';';
			maxlen--;
		}
	}

	/* we still have at least one char left, as we decremented maxlen at
	 * the begining */
	*p = '\0';

	return 0;

cleanup:
	last_parts[0] = '\0';
	return 1;
}

/**
 * Call generate_mtdparts to process all devices and generate corresponding
 * mtdparts string, save it in mtdparts environment variable.
 *
 * @param buf output buffer holding generated mtdparts string (output)
 * @param buflen buffer size
 * @return 0 on success, 1 otherwise
 */
static int generate_mtdparts_save(char *buf, u32 buflen)
{
	int ret;

	ret = generate_mtdparts(buf, buflen);

	if ((buf[0] != '\0') && (ret == 0))
		setenv("mtdparts", buf);
	else
		setenv("mtdparts", NULL);

	return ret;
}

#if defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES)
/**
 * Get the net size (w/o bad blocks) of the given partition.
 *
 * @param mtd the mtd info
 * @param part the partition
 * @return the calculated net size of this partition
 */
static uint64_t net_part_size(struct mtd_info *mtd, struct part_info *part)
{
	uint64_t i, net_size = 0;

	if (!mtd->block_isbad)
		return part->size;

	for (i = 0; i < part->size; i += mtd->erasesize) {
		if (!mtd->block_isbad(mtd, part->offset + i))
			net_size += mtd->erasesize;
	}

	return net_size;
}
#endif

static void print_partition_table(void)
{
	struct list_head *dentry, *pentry;
	struct part_info *part;
	struct mtd_device *dev;
	int part_num;

	list_for_each(dentry, &devices) {
		dev = list_entry(dentry, struct mtd_device, link);
		/* list partitions for given device */
		part_num = 0;
#if defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES)
		struct mtd_info *mtd;

		if (get_mtd_info(dev->id->type, dev->id->num, &mtd))
			return;

		printf("\ndevice %s%d <%s>, # parts = %d\n",
				MTD_DEV_TYPE(dev->id->type), dev->id->num,
				dev->id->mtd_id, dev->num_parts);
		printf(" #: name\t\tsize\t\tnet size\toffset\t\tmask_flags\n");

		list_for_each(pentry, &dev->parts) {
			u32 net_size;
			char *size_note;

			part = list_entry(pentry, struct part_info, link);
			net_size = net_part_size(mtd, part);
			size_note = part->size == net_size ? " " : " (!)";
			printf("%2d: %-20s0x%08x\t0x%08x%s\t0x%08x\t%d\n",
					part_num, part->name, part->size,
					net_size, size_note, part->offset,
					part->mask_flags);
#else /* !defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES) */
		printf("\ndevice %s%d <%s>, # parts = %d\n",
				MTD_DEV_TYPE(dev->id->type), dev->id->num,
				dev->id->mtd_id, dev->num_parts);
		printf(" #: name\t\tsize\t\toffset\t\tmask_flags\n");

		list_for_each(pentry, &dev->parts) {
			part = list_entry(pentry, struct part_info, link);
			printf("%2d: %-20s0x%08llx\t0x%08llx\t%d\n",
					part_num, part->name, part->size,
					part->offset, part->mask_flags);
#endif /* defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES) */
			part_num++;
		}
	}

	if (list_empty(&devices))
		printf("no partitions defined\n");
}

/**
 * Format and print out a partition list for each device from global device
 * list.
 */
static void list_partitions(void)
{
	struct part_info *part;

	debug("\n---list_partitions---\n");
	print_partition_table();

	/* current_mtd_dev is not NULL only when we have non empty device list */
	if (current_mtd_dev) {
		part = mtd_part_info(current_mtd_dev, current_mtd_partnum);
		if (part) {
			printf("\nactive partition: %s%d,%d - (%s) 0x%08llx @ 0x%08llx\n",
					MTD_DEV_TYPE(current_mtd_dev->id->type),
					current_mtd_dev->id->num, current_mtd_partnum,
					part->name, part->size, part->offset);
		} else {
			printf("could not get current partition info\n\n");
		}
	}

	printf("\ndefaults:\n");
	printf("mtdids  : %s\n",
		mtdids_default ? mtdids_default : "none");
	/*
	 * Using printf() here results in printbuffer overflow
	 * if default mtdparts string is greater than console
	 * printbuffer. Use puts() to prevent system crashes.
	 */
	puts("mtdparts: ");
	puts(mtdparts_default ? mtdparts_default : "none");
	puts("\n");
}

/**
 * Given partition identifier in form of <dev_type><dev_num>,<part_num> find
 * corresponding device and verify partition number.
 *
 * @param id string describing device and partition or partition name
 * @param dev pointer to the requested device (output)
 * @param part_num verified partition number (output)
 * @param part pointer to requested partition (output)
 * @return 0 on success, 1 otherwise
 */
int find_dev_and_part(const char *id, struct mtd_device **dev,
		u8 *part_num, struct part_info **part)
{
	struct list_head *dentry, *pentry;
	u8 type, dnum, pnum;
	const char *p;

	debug("--- find_dev_and_part ---\nid = %s\n", id);

	list_for_each(dentry, &devices) {
		*part_num = 0;
		*dev = list_entry(dentry, struct mtd_device, link);
		list_for_each(pentry, &(*dev)->parts) {
			*part = list_entry(pentry, struct part_info, link);
			if (strcmp((*part)->name, id) == 0)
				return 0;
			(*part_num)++;
		}
	}

	p = id;
	*dev = NULL;
	*part = NULL;
	*part_num = 0;

	if (mtd_id_parse(p, &p, &type, &dnum) != 0)
		return 1;

	if ((*p++ != ',') || (*p == '\0')) {
		printf("no partition number specified\n");
		return 1;
	}
	pnum = simple_strtoul(p, (char **)&p, 0);
	if (*p != '\0') {
		printf("unexpected trailing character '%c'\n", *p);
		return 1;
	}

	if ((*dev = device_find(type, dnum)) == NULL) {
		printf("no such device %s%d\n", MTD_DEV_TYPE(type), dnum);
		return 1;
	}

	if ((*part = mtd_part_info(*dev, pnum)) == NULL) {
		printf("no such partition\n");
		*dev = NULL;
		return 1;
	}

	*part_num = pnum;

	return 0;
}

/**
 * Find and delete partition. For partition id format see find_dev_and_part().
 *
 * @param id string describing device and partition
 * @return 0 on success, 1 otherwise
 */
static int delete_partition(const char *id)
{
	u8 pnum;
	struct mtd_device *dev;
	struct part_info *part;

	if (find_dev_and_part(id, &dev, &pnum, &part) == 0) {

		debug("delete_partition: device = %s%d, partition %d = (%s) 0x%08llx@0x%08llx\n",
				MTD_DEV_TYPE(dev->id->type), dev->id->num, pnum,
				part->name, part->size, part->offset);

		if (part_del(dev, part) != 0)
			return 1;

		if (generate_mtdparts_save(last_parts, MTDPARTS_MAXLEN) != 0) {
			printf("generated mtdparts too long, resetting to null\n");
			return 1;
		}
		return 0;
	}

	printf("partition %s not found\n", id);
	return 1;
}

#if defined(CONFIG_CMD_MTDPARTS_SPREAD)
/**
 * Increase the size of the given partition so that it's net size is at least
 * as large as the size member and such that the next partition would start on a
 * good block if it were adjacent to this partition.
 *
 * @param mtd the mtd device
 * @param part the partition
 * @param next_offset pointer to the offset of the next partition after this
 *                    partition's size has been modified (output)
 */
static void spread_partition(struct mtd_info *mtd, struct part_info *part,
			     uint64_t *next_offset)
{
	uint64_t net_size, padding_size = 0;
	int truncated;

	mtd_get_len_incl_bad(mtd, part->offset, part->size, &net_size,
			     &truncated);

	/*
	 * Absorb bad blocks immediately following this
	 * partition also into the partition, such that
	 * the next partition starts with a good block.
	 */
	if (!truncated) {
		mtd_get_len_incl_bad(mtd, part->offset + net_size,
				     mtd->erasesize, &padding_size, &truncated);
		if (truncated)
			padding_size = 0;
		else
			padding_size -= mtd->erasesize;
	}

	if (truncated) {
		printf("truncated partition %s to %lld bytes\n", part->name,
		       (uint64_t) net_size + padding_size);
	}

	part->size = net_size + padding_size;
	*next_offset = part->offset + part->size;
}

/**
 * Adjust all of the partition sizes, such that all partitions are at least
 * as big as their mtdparts environment variable sizes and they each start
 * on a good block.
 *
 * @return 0 on success, 1 otherwise
 */
static int spread_partitions(void)
{
	struct list_head *dentry, *pentry;
	struct mtd_device *dev;
	struct part_info *part;
	struct mtd_info *mtd;
	int part_num;
	uint64_t cur_offs;

	list_for_each(dentry, &devices) {
		dev = list_entry(dentry, struct mtd_device, link);

		if (get_mtd_info(dev->id->type, dev->id->num, &mtd))
			return 1;

		part_num = 0;
		cur_offs = 0;
		list_for_each(pentry, &dev->parts) {
			part = list_entry(pentry, struct part_info, link);

			debug("spread_partitions: device = %s%d, partition %d ="
				" (%s) 0x%08x@0x%08x\n",
				MTD_DEV_TYPE(dev->id->type), dev->id->num,
				part_num, part->name, part->size,
				part->offset);

			if (cur_offs > part->offset)
				part->offset = cur_offs;

			spread_partition(mtd, part, &cur_offs);

			part_num++;
		}
	}

	index_partitions();

	if (generate_mtdparts_save(last_parts, MTDPARTS_MAXLEN) != 0) {
		printf("generated mtdparts too long, resetting to null\n");
		return 1;
	}
	return 0;
}
#endif /* CONFIG_CMD_MTDPARTS_SPREAD */

/**
 * Accept character string describing mtd partitions and call device_parse()
 * for each entry. Add created devices to the global devices list.
 *
 * @param mtdparts string specifing mtd partitions
 * @return 0 on success, 1 otherwise
 */
static int parse_mtdparts(const char *const mtdparts)
{
	const char *p = mtdparts;
	struct mtd_device *dev;
	int err = 1;
	char tmp_parts[MTDPARTS_MAXLEN];

	debug("\n---parse_mtdparts---\nmtdparts = %s\n\n", p);

	/* delete all devices and partitions */
	if (mtd_devices_init() != 0) {
		printf("could not initialise device list\n");
		return err;
	}

	/* re-read 'mtdparts' variable, mtd_devices_init may be updating env */
	if (gd->flags & GD_FLG_ENV_READY) {
		p = getenv("mtdparts");
	} else {
		p = tmp_parts;
		getenv_f("mtdparts", tmp_parts, MTDPARTS_MAXLEN);
	}

	if (strncmp(p, "mtdparts=", 9) != 0) {
		printf("mtdparts variable doesn't start with 'mtdparts='\n");
		return err;
	}
	p += 9;

	while (p && (*p != '\0')) {
		err = 1;
		if ((device_parse(p, &p, &dev) != 0) || (!dev))
			break;

		debug("+ device: %s\t%d\t%s\n", MTD_DEV_TYPE(dev->id->type),
				dev->id->num, dev->id->mtd_id);

		/* check if parsed device is already on the list */
		if (device_find(dev->id->type, dev->id->num) != NULL) {
			printf("device %s%d redefined, please correct mtdparts variable\n",
					MTD_DEV_TYPE(dev->id->type), dev->id->num);
			break;
		}

		list_add_tail(&dev->link, &devices);
		err = 0;
	}
	if (err == 1) {
		device_delall(&devices);
		return 1;
	}

	return 0;
}

/**
 * Parse provided string describing mtdids mapping (see file header for mtdids
 * variable format). Allocate memory for each entry and add all found entries
 * to the global mtdids list.
 *
 * @param ids mapping string
 * @return 0 on success, 1 otherwise
 */
static int parse_mtdids(const char *const ids)
{
	const char *p = ids;
	const char *mtd_id;
	int mtd_id_len;
	struct mtdids *id;
	struct list_head *entry, *n;
	struct mtdids *id_tmp;
	u8 type, num;
	u64 size;
	int ret = 1;

	debug("\n---parse_mtdids---\nmtdids = %s\n\n", ids);

	/* clean global mtdids list */
	list_for_each_safe(entry, n, &mtdids) {
		id_tmp = list_entry(entry, struct mtdids, link);
		debug("mtdids del: %d %d\n", id_tmp->type, id_tmp->num);
		list_del(entry);
		free(id_tmp);
	}
	last_ids[0] = '\0';
	INIT_LIST_HEAD(&mtdids);

	while(p && (*p != '\0')) {

		ret = 1;
		/* parse 'nor'|'nand'|'onenand'<dev-num> */
		if (mtd_id_parse(p, &p, &type, &num) != 0)
			break;

		if (*p != '=') {
			printf("mtdids: incorrect <dev-num>\n");
			break;
		}
		p++;

		/* check if requested device exists */
		if (mtd_device_validate(type, num, &size) != 0)
			return 1;

		/* locate <mtd-id> */
		mtd_id = p;
		if ((p = strchr(mtd_id, ',')) != NULL) {
			mtd_id_len = p - mtd_id + 1;
			p++;
		} else {
			mtd_id_len = strlen(mtd_id) + 1;
		}
		if (mtd_id_len == 0) {
			printf("mtdids: no <mtd-id> identifier\n");
			break;
		}

		/* check if this id is already on the list */
		int double_entry = 0;
		list_for_each(entry, &mtdids) {
			id_tmp = list_entry(entry, struct mtdids, link);
			if ((id_tmp->type == type) && (id_tmp->num == num)) {
				double_entry = 1;
				break;
			}
		}
		if (double_entry) {
			printf("device id %s%d redefined, please correct mtdids variable\n",
					MTD_DEV_TYPE(type), num);
			break;
		}

		/* allocate mtdids structure */
		if (!(id = (struct mtdids *)malloc(sizeof(struct mtdids) + mtd_id_len))) {
			printf("out of memory\n");
			break;
		}
		memset(id, 0, sizeof(struct mtdids) + mtd_id_len);
		id->num = num;
		id->type = type;
		id->size = size;
		id->mtd_id = (char *)(id + 1);
		strncpy(id->mtd_id, mtd_id, mtd_id_len - 1);
		id->mtd_id[mtd_id_len - 1] = '\0';
		INIT_LIST_HEAD(&id->link);

		debug("+ id %s%d\t%16lld bytes\t%s\n",
				MTD_DEV_TYPE(id->type), id->num,
				id->size, id->mtd_id);

		list_add_tail(&id->link, &mtdids);
		ret = 0;
	}
	if (ret == 1) {
		/* clean mtdids list and free allocated memory */
		list_for_each_safe(entry, n, &mtdids) {
			id_tmp = list_entry(entry, struct mtdids, link);
			list_del(entry);
			free(id_tmp);
		}
		return 1;
	}

	return 0;
}

/**
 * Parse and initialize global mtdids mapping and create global
 * device/partition list.
 *
 * @return 0 on success, 1 otherwise
 */
int mtdparts_init(void)
{
	static int initialized = 0;
	const char *ids, *parts;
	const char *current_partition;
	int ids_changed;
	char tmp_ep[PARTITION_MAXLEN];
	char tmp_parts[MTDPARTS_MAXLEN];

	debug("\n---mtdparts_init---\n");
	if (!initialized) {
		INIT_LIST_HEAD(&mtdids);
		INIT_LIST_HEAD(&devices);
		memset(last_ids, 0, MTDIDS_MAXLEN);
		memset(last_parts, 0, MTDPARTS_MAXLEN);
		memset(last_partition, 0, PARTITION_MAXLEN);
		initialized = 1;
	}

	/* get variables */
	ids = getenv("mtdids");
	/*
	 * The mtdparts variable tends to be long. If we need to access it
	 * before the env is relocated, then we need to use our own stack
	 * buffer.  gd->env_buf will be too small.
	 */
	if (gd->flags & GD_FLG_ENV_READY) {
		parts = getenv("mtdparts");
	} else {
		parts = tmp_parts;
		getenv_f("mtdparts", tmp_parts, MTDPARTS_MAXLEN);
	}
	current_partition = getenv("partition");

	/* save it for later parsing, cannot rely on current partition pointer
	 * as 'partition' variable may be updated during init */
	tmp_ep[0] = '\0';
	if (current_partition)
		strncpy(tmp_ep, current_partition, PARTITION_MAXLEN);

	debug("last_ids  : %s\n", last_ids);
	debug("env_ids   : %s\n", ids);
	debug("last_parts: %s\n", last_parts);
	debug("env_parts : %s\n\n", parts);

	debug("last_partition : %s\n", last_partition);
	debug("env_partition  : %s\n", current_partition);

	/* if mtdids varible is empty try to use defaults */
	if (!ids) {
		if (mtdids_default) {
			debug("mtdids variable not defined, using default\n");
			ids = mtdids_default;
			setenv("mtdids", (char *)ids);
		} else {
			printf("mtdids not defined, no default present\n");
			return 1;
		}
	}
	if (strlen(ids) > MTDIDS_MAXLEN - 1) {
		printf("mtdids too long (> %d)\n", MTDIDS_MAXLEN);
		return 1;
	}

	/* do no try to use defaults when mtdparts variable is not defined,
	 * just check the length */
	if (!parts)
		printf("mtdparts variable not set, see 'help mtdparts'\n");

	if (parts && (strlen(parts) > MTDPARTS_MAXLEN - 1)) {
		printf("mtdparts too long (> %d)\n", MTDPARTS_MAXLEN);
		return 1;
	}

	/* check if we have already parsed those mtdids */
	if ((last_ids[0] != '\0') && (strcmp(last_ids, ids) == 0)) {
		ids_changed = 0;
	} else {
		ids_changed = 1;

		if (parse_mtdids(ids) != 0) {
			mtd_devices_init();
			return 1;
		}

		/* ok it's good, save new ids */
		strncpy(last_ids, ids, MTDIDS_MAXLEN);
	}

	/* parse partitions if either mtdparts or mtdids were updated */
	if (parts && ((last_parts[0] == '\0') || ((strcmp(last_parts, parts) != 0)) || ids_changed)) {
		if (parse_mtdparts(parts) != 0)
			return 1;

		if (list_empty(&devices)) {
			printf("mtdparts_init: no valid partitions\n");
			return 1;
		}

		/* ok it's good, save new parts */
		strncpy(last_parts, parts, MTDPARTS_MAXLEN);

		/* reset first partition from first dev from the list as current */
		current_mtd_dev = list_entry(devices.next, struct mtd_device, link);
		current_mtd_partnum = 0;
		current_save();

		debug("mtdparts_init: current_mtd_dev  = %s%d, current_mtd_partnum = %d\n",
				MTD_DEV_TYPE(current_mtd_dev->id->type),
				current_mtd_dev->id->num, current_mtd_partnum);
	}

	/* mtdparts variable was reset to NULL, delete all devices/partitions */
	if (!parts && (last_parts[0] != '\0'))
		return mtd_devices_init();

	/* do not process current partition if mtdparts variable is null */
	if (!parts)
		return 0;

	/* is current partition set in environment? if so, use it */
	if ((tmp_ep[0] != '\0') && (strcmp(tmp_ep, last_partition) != 0)) {
		struct part_info *p;
		struct mtd_device *cdev;
		u8 pnum;

		debug("--- getting current partition: %s\n", tmp_ep);

		if (find_dev_and_part(tmp_ep, &cdev, &pnum, &p) == 0) {
			current_mtd_dev = cdev;
			current_mtd_partnum = pnum;
			current_save();
		}
	} else if (getenv("partition") == NULL) {
		debug("no partition variable set, setting...\n");
		current_save();
	}

	return 0;
}

/**
 * Return pointer to the partition of a requested number from a requested
 * device.
 *
 * @param dev device that is to be searched for a partition
 * @param part_num requested partition number
 * @return pointer to the part_info, NULL otherwise
 */
static struct part_info* mtd_part_info(struct mtd_device *dev, unsigned int part_num)
{
	struct list_head *entry;
	struct part_info *part;
	int num;

	if (!dev)
		return NULL;

	debug("\n--- mtd_part_info: partition number %d for device %s%d (%s)\n",
			part_num, MTD_DEV_TYPE(dev->id->type),
			dev->id->num, dev->id->mtd_id);

	if (part_num >= dev->num_parts) {
		printf("invalid partition number %d for device %s%d (%s)\n",
				part_num, MTD_DEV_TYPE(dev->id->type),
				dev->id->num, dev->id->mtd_id);
		return NULL;
	}

	/* locate partition number, return it */
	num = 0;
	list_for_each(entry, &dev->parts) {
		part = list_entry(entry, struct part_info, link);

		if (part_num == num++) {
			return part;
		}
	}

	return NULL;
}

/***************************************************/
/* U-boot commands				   */
/***************************************************/
/* command line only */
/**
 * Routine implementing u-boot chpart command. Sets new current partition based
 * on the user supplied partition id. For partition id format see find_dev_and_part().
 *
 * @param cmdtp command internal data
 * @param flag command flag
 * @param argc number of arguments supplied to the command
 * @param argv arguments list
 * @return 0 on success, 1 otherwise
 */
static int do_chpart(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
/* command line only */
	struct mtd_device *dev;
	struct part_info *part;
	u8 pnum;

	if (mtdparts_init() !=0)
		return 1;

	if (argc < 2) {
		printf("no partition id specified\n");
		return 1;
	}

	if (find_dev_and_part(argv[1], &dev, &pnum, &part) != 0)
		return 1;

	current_mtd_dev = dev;
	current_mtd_partnum = pnum;
	current_save();

	printf("partition changed to %s%d,%d\n",
			MTD_DEV_TYPE(dev->id->type), dev->id->num, pnum);

	return 0;
}

/**
 * Routine implementing u-boot mtdparts command. Initialize/update default global
 * partition list and process user partition request (list, add, del).
 *
 * @param cmdtp command internal data
 * @param flag command flag
 * @param argc number of arguments supplied to the command
 * @param argv arguments list
 * @return 0 on success, 1 otherwise
 */
static int do_mtdparts(cmd_tbl_t *cmdtp, int flag, int argc,
		       char * const argv[])
{
	if (argc == 2) {
		if (strcmp(argv[1], "default") == 0) {
			setenv("mtdids", (char *)mtdids_default);
			setenv("mtdparts", (char *)mtdparts_default);
			setenv("partition", NULL);

			mtdparts_init();
			return 0;
		} else if (strcmp(argv[1], "delall") == 0) {
			/* this may be the first run, initialize lists if needed */
			mtdparts_init();

			setenv("mtdparts", NULL);

			/* mtd_devices_init() calls current_save() */
			return mtd_devices_init();
		}
	}

	/* make sure we are in sync with env variables */
	if (mtdparts_init() != 0)
		return 1;

	if (argc == 1) {
		list_partitions();
		return 0;
	}

	/* mtdparts add <mtd-dev> <size>[@<offset>] <name> [ro] */
	if (((argc == 5) || (argc == 6)) && (strncmp(argv[1], "add", 3) == 0)) {
#define PART_ADD_DESC_MAXLEN 64
		char tmpbuf[PART_ADD_DESC_MAXLEN];
#if defined(CONFIG_CMD_MTDPARTS_SPREAD)
		struct mtd_info *mtd;
		uint64_t next_offset;
#endif
		u8 type, num, len;
		struct mtd_device *dev;
		struct mtd_device *dev_tmp;
		struct mtdids *id;
		struct part_info *p;

		if (mtd_id_parse(argv[2], NULL, &type, &num) != 0)
			return 1;

		if ((id = id_find(type, num)) == NULL) {
			printf("no such device %s defined in mtdids variable\n", argv[2]);
			return 1;
		}

		len = strlen(id->mtd_id) + 1;	/* 'mtd_id:' */
		len += strlen(argv[3]);		/* size@offset */
		len += strlen(argv[4]) + 2;	/* '(' name ')' */
		if (argv[5] && (strlen(argv[5]) == 2))
			len += 2;		/* 'ro' */

		if (len >= PART_ADD_DESC_MAXLEN) {
			printf("too long partition description\n");
			return 1;
		}
		sprintf(tmpbuf, "%s:%s(%s)%s",
				id->mtd_id, argv[3], argv[4], argv[5] ? argv[5] : "");
		debug("add tmpbuf: %s\n", tmpbuf);

		if ((device_parse(tmpbuf, NULL, &dev) != 0) || (!dev))
			return 1;

		debug("+ %s\t%d\t%s\n", MTD_DEV_TYPE(dev->id->type),
				dev->id->num, dev->id->mtd_id);

		p = list_entry(dev->parts.next, struct part_info, link);

#if defined(CONFIG_CMD_MTDPARTS_SPREAD)
		if (get_mtd_info(dev->id->type, dev->id->num, &mtd))
			return 1;

		if (!strcmp(&argv[1][3], ".spread")) {
			spread_partition(mtd, p, &next_offset);
			debug("increased %s to %d bytes\n", p->name, p->size);
		}
#endif

		dev_tmp = device_find(dev->id->type, dev->id->num);
		if (dev_tmp == NULL) {
			device_add(dev);
		} else if (part_add(dev_tmp, p) != 0) {
			/* merge new partition with existing ones*/
			device_del(dev);
			return 1;
		}

		if (generate_mtdparts_save(last_parts, MTDPARTS_MAXLEN) != 0) {
			printf("generated mtdparts too long, resetting to null\n");
			return 1;
		}

		return 0;
	}

	/* mtdparts del part-id */
	if ((argc == 3) && (strcmp(argv[1], "del") == 0)) {
		debug("del: part-id = %s\n", argv[2]);

		return delete_partition(argv[2]);
	}

#if defined(CONFIG_CMD_MTDPARTS_SPREAD)
	if ((argc == 2) && (strcmp(argv[1], "spread") == 0))
		return spread_partitions();
#endif /* CONFIG_CMD_MTDPARTS_SPREAD */

	return CMD_RET_USAGE;
}

/***************************************************/
U_BOOT_CMD(
	chpart,	2,	0,	do_chpart,
	"change active partition",
	"part-id\n"
	"    - change active partition (e.g. part-id = nand0,1)"
);

#ifdef CONFIG_SYS_LONGHELP
static char mtdparts_help_text[] =
	"\n"
	"    - list partition table\n"
	"mtdparts delall\n"
	"    - delete all partitions\n"
	"mtdparts del part-id\n"
	"    - delete partition (e.g. part-id = nand0,1)\n"
	"mtdparts add <mtd-dev> <size>[@<offset>] [<name>] [ro]\n"
	"    - add partition\n"
#if defined(CONFIG_CMD_MTDPARTS_SPREAD)
	"mtdparts add.spread <mtd-dev> <size>[@<offset>] [<name>] [ro]\n"
	"    - add partition, padding size by skipping bad blocks\n"
#endif
	"mtdparts default\n"
	"    - reset partition table to defaults\n"
#if defined(CONFIG_CMD_MTDPARTS_SPREAD)
	"mtdparts spread\n"
	"    - adjust the sizes of the partitions so they are\n"
	"      at least as big as the mtdparts variable specifies\n"
	"      and they each start on a good block\n\n"
#else
	"\n"
#endif /* CONFIG_CMD_MTDPARTS_SPREAD */
	"-----\n\n"
	"this command uses three environment variables:\n\n"
	"'partition' - keeps current partition identifier\n\n"
	"partition  := <part-id>\n"
	"<part-id>  := <dev-id>,part_num\n\n"
	"'mtdids' - linux kernel mtd device id <-> u-boot device id mapping\n\n"
	"mtdids=<idmap>[,<idmap>,...]\n\n"
	"<idmap>    := <dev-id>=<mtd-id>\n"
	"<dev-id>   := 'nand'|'nor'|'onenand'<dev-num>\n"
	"<dev-num>  := mtd device number, 0...\n"
	"<mtd-id>   := unique device tag used by linux kernel to find mtd device (mtd->name)\n\n"
	"'mtdparts' - partition list\n\n"
	"mtdparts=mtdparts=<mtd-def>[;<mtd-def>...]\n\n"
	"<mtd-def>  := <mtd-id>:<part-def>[,<part-def>...]\n"
	"<mtd-id>   := unique device tag used by linux kernel to find mtd device (mtd->name)\n"
	"<part-def> := <size>[@<offset>][<name>][<ro-flag>]\n"
	"<size>     := standard linux memsize OR '-' to denote all remaining space\n"
	"<offset>   := partition start offset within the device\n"
	"<name>     := '(' NAME ')'\n"
	"<ro-flag>  := when set to 'ro' makes partition read-only (not used, passed to kernel)";
#endif

U_BOOT_CMD(
	mtdparts,	6,	0,	do_mtdparts,
	"define flash/nand partitions", mtdparts_help_text
);
/***************************************************/
OpenPOWER on IntegriCloud