summaryrefslogtreecommitdiff
path: root/drivers/mtd/cfi_flash.c
blob: 24eb33f0f6e053357b0baa7d82980c618a9217af (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
/*
 * (C) Copyright 2002-2004
 * Brad Kemp, Seranoa Networks, Brad.Kemp@seranoa.com
 *
 * Copyright (C) 2003 Arabella Software Ltd.
 * Yuli Barcohen <yuli@arabellasw.com>
 *
 * Copyright (C) 2004
 * Ed Okerson
 *
 * Copyright (C) 2006
 * Tolunay Orkun <listmember@orkun.us>
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 *
 */

/* The DEBUG define must be before common to enable debugging */
/* #define DEBUG	*/

#include <common.h>
#include <asm/processor.h>
#include <asm/io.h>
#include <asm/byteorder.h>
#include <environment.h>
#include <mtd/cfi_flash.h>

/*
 * This file implements a Common Flash Interface (CFI) driver for
 * U-Boot.
 *
 * The width of the port and the width of the chips are determined at
 * initialization.  These widths are used to calculate the address for
 * access CFI data structures.
 *
 * References
 * JEDEC Standard JESD68 - Common Flash Interface (CFI)
 * JEDEC Standard JEP137-A Common Flash Interface (CFI) ID Codes
 * Intel Application Note 646 Common Flash Interface (CFI) and Command Sets
 * Intel 290667-008 3 Volt Intel StrataFlash Memory datasheet
 * AMD CFI Specification, Release 2.0 December 1, 2001
 * AMD/Spansion Application Note: Migration from Single-byte to Three-byte
 *   Device IDs, Publication Number 25538 Revision A, November 8, 2001
 *
 * Define CONFIG_SYS_WRITE_SWAPPED_DATA, if you have to swap the Bytes between
 * reading and writing ... (yes there is such a Hardware).
 */

#ifndef CONFIG_SYS_FLASH_BANKS_LIST
#define CONFIG_SYS_FLASH_BANKS_LIST { CONFIG_SYS_FLASH_BASE }
#endif

static uint flash_offset_cfi[2] = { FLASH_OFFSET_CFI, FLASH_OFFSET_CFI_ALT };
static uint flash_verbose = 1;

/* use CONFIG_SYS_MAX_FLASH_BANKS_DETECT if defined */
#ifdef CONFIG_SYS_MAX_FLASH_BANKS_DETECT
# define CFI_MAX_FLASH_BANKS	CONFIG_SYS_MAX_FLASH_BANKS_DETECT
#else
# define CFI_MAX_FLASH_BANKS	CONFIG_SYS_MAX_FLASH_BANKS
#endif

flash_info_t flash_info[CFI_MAX_FLASH_BANKS];	/* FLASH chips info */

/*
 * Check if chip width is defined. If not, start detecting with 8bit.
 */
#ifndef CONFIG_SYS_FLASH_CFI_WIDTH
#define CONFIG_SYS_FLASH_CFI_WIDTH	FLASH_CFI_8BIT
#endif

static void __flash_write8(u8 value, void *addr)
{
	__raw_writeb(value, addr);
}

static void __flash_write16(u16 value, void *addr)
{
	__raw_writew(value, addr);
}

static void __flash_write32(u32 value, void *addr)
{
	__raw_writel(value, addr);
}

static void __flash_write64(u64 value, void *addr)
{
	/* No architectures currently implement __raw_writeq() */
	*(volatile u64 *)addr = value;
}

static u8 __flash_read8(void *addr)
{
	return __raw_readb(addr);
}

static u16 __flash_read16(void *addr)
{
	return __raw_readw(addr);
}

static u32 __flash_read32(void *addr)
{
	return __raw_readl(addr);
}

static u64 __flash_read64(void *addr)
{
	/* No architectures currently implement __raw_readq() */
	return *(volatile u64 *)addr;
}

#ifdef CONFIG_CFI_FLASH_USE_WEAK_ACCESSORS
void flash_write8(u8 value, void *addr)__attribute__((weak, alias("__flash_write8")));
void flash_write16(u16 value, void *addr)__attribute__((weak, alias("__flash_write16")));
void flash_write32(u32 value, void *addr)__attribute__((weak, alias("__flash_write32")));
void flash_write64(u64 value, void *addr)__attribute__((weak, alias("__flash_write64")));
u8 flash_read8(void *addr)__attribute__((weak, alias("__flash_read8")));
u16 flash_read16(void *addr)__attribute__((weak, alias("__flash_read16")));
u32 flash_read32(void *addr)__attribute__((weak, alias("__flash_read32")));
u64 flash_read64(void *addr)__attribute__((weak, alias("__flash_read64")));
#else
#define flash_write8	__flash_write8
#define flash_write16	__flash_write16
#define flash_write32	__flash_write32
#define flash_write64	__flash_write64
#define flash_read8	__flash_read8
#define flash_read16	__flash_read16
#define flash_read32	__flash_read32
#define flash_read64	__flash_read64
#endif

/*-----------------------------------------------------------------------
 */
#if defined(CONFIG_ENV_IS_IN_FLASH) || defined(CONFIG_ENV_ADDR_REDUND) || (CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE)
flash_info_t *flash_get_info(ulong base)
{
	int i;
	flash_info_t * info = 0;

	for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) {
		info = & flash_info[i];
		if (info->size && info->start[0] <= base &&
		    base <= info->start[0] + info->size - 1)
			break;
	}

	return i == CONFIG_SYS_MAX_FLASH_BANKS ? 0 : info;
}
#endif

unsigned long flash_sector_size(flash_info_t *info, flash_sect_t sect)
{
	if (sect != (info->sector_count - 1))
		return info->start[sect + 1] - info->start[sect];
	else
		return info->start[0] + info->size - info->start[sect];
}

/*-----------------------------------------------------------------------
 * create an address based on the offset and the port width
 */
static inline void *
flash_map (flash_info_t * info, flash_sect_t sect, uint offset)
{
	unsigned int byte_offset = offset * info->portwidth;

	return (void *)(info->start[sect] + byte_offset);
}

static inline void flash_unmap(flash_info_t *info, flash_sect_t sect,
		unsigned int offset, void *addr)
{
}

/*-----------------------------------------------------------------------
 * make a proper sized command based on the port and chip widths
 */
static void flash_make_cmd(flash_info_t *info, u32 cmd, void *cmdbuf)
{
	int i;
	int cword_offset;
	int cp_offset;
#if defined(__LITTLE_ENDIAN) || defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
	u32 cmd_le = cpu_to_le32(cmd);
#endif
	uchar val;
	uchar *cp = (uchar *) cmdbuf;

	for (i = info->portwidth; i > 0; i--){
		cword_offset = (info->portwidth-i)%info->chipwidth;
#if defined(__LITTLE_ENDIAN) || defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
		cp_offset = info->portwidth - i;
		val = *((uchar*)&cmd_le + cword_offset);
#else
		cp_offset = i - 1;
		val = *((uchar*)&cmd + sizeof(u32) - cword_offset - 1);
#endif
		cp[cp_offset] = (cword_offset >= sizeof(u32)) ? 0x00 : val;
	}
}

#ifdef DEBUG
/*-----------------------------------------------------------------------
 * Debug support
 */
static void print_longlong (char *str, unsigned long long data)
{
	int i;
	char *cp;

	cp = (char *) &data;
	for (i = 0; i < 8; i++)
		sprintf (&str[i * 2], "%2.2x", *cp++);
}

static void flash_printqry (struct cfi_qry *qry)
{
	u8 *p = (u8 *)qry;
	int x, y;

	for (x = 0; x < sizeof(struct cfi_qry); x += 16) {
		debug("%02x : ", x);
		for (y = 0; y < 16; y++)
			debug("%2.2x ", p[x + y]);
		debug(" ");
		for (y = 0; y < 16; y++) {
			unsigned char c = p[x + y];
			if (c >= 0x20 && c <= 0x7e)
				debug("%c", c);
			else
				debug(".");
		}
		debug("\n");
	}
}
#endif


/*-----------------------------------------------------------------------
 * read a character at a port width address
 */
static inline uchar flash_read_uchar (flash_info_t * info, uint offset)
{
	uchar *cp;
	uchar retval;

	cp = flash_map (info, 0, offset);
#if defined(__LITTLE_ENDIAN) || defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
	retval = flash_read8(cp);
#else
	retval = flash_read8(cp + info->portwidth - 1);
#endif
	flash_unmap (info, 0, offset, cp);
	return retval;
}

/*-----------------------------------------------------------------------
 * read a word at a port width address, assume 16bit bus
 */
static inline ushort flash_read_word (flash_info_t * info, uint offset)
{
	ushort *addr, retval;

	addr = flash_map (info, 0, offset);
	retval = flash_read16 (addr);
	flash_unmap (info, 0, offset, addr);
	return retval;
}


/*-----------------------------------------------------------------------
 * read a long word by picking the least significant byte of each maximum
 * port size word. Swap for ppc format.
 */
static ulong flash_read_long (flash_info_t * info, flash_sect_t sect,
			      uint offset)
{
	uchar *addr;
	ulong retval;

#ifdef DEBUG
	int x;
#endif
	addr = flash_map (info, sect, offset);

#ifdef DEBUG
	debug ("long addr is at %p info->portwidth = %d\n", addr,
	       info->portwidth);
	for (x = 0; x < 4 * info->portwidth; x++) {
		debug ("addr[%x] = 0x%x\n", x, flash_read8(addr + x));
	}
#endif
#if defined(__LITTLE_ENDIAN) || defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
	retval = ((flash_read8(addr) << 16) |
		  (flash_read8(addr + info->portwidth) << 24) |
		  (flash_read8(addr + 2 * info->portwidth)) |
		  (flash_read8(addr + 3 * info->portwidth) << 8));
#else
	retval = ((flash_read8(addr + 2 * info->portwidth - 1) << 24) |
		  (flash_read8(addr + info->portwidth - 1) << 16) |
		  (flash_read8(addr + 4 * info->portwidth - 1) << 8) |
		  (flash_read8(addr + 3 * info->portwidth - 1)));
#endif
	flash_unmap(info, sect, offset, addr);

	return retval;
}

/*
 * Write a proper sized command to the correct address
 */
void flash_write_cmd (flash_info_t * info, flash_sect_t sect,
		      uint offset, u32 cmd)
{

	void *addr;
	cfiword_t cword;

	addr = flash_map (info, sect, offset);
	flash_make_cmd (info, cmd, &cword);
	switch (info->portwidth) {
	case FLASH_CFI_8BIT:
		debug ("fwc addr %p cmd %x %x 8bit x %d bit\n", addr, cmd,
		       cword.c, info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
		flash_write8(cword.c, addr);
		break;
	case FLASH_CFI_16BIT:
		debug ("fwc addr %p cmd %x %4.4x 16bit x %d bit\n", addr,
		       cmd, cword.w,
		       info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
		flash_write16(cword.w, addr);
		break;
	case FLASH_CFI_32BIT:
		debug ("fwc addr %p cmd %x %8.8lx 32bit x %d bit\n", addr,
		       cmd, cword.l,
		       info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
		flash_write32(cword.l, addr);
		break;
	case FLASH_CFI_64BIT:
#ifdef DEBUG
		{
			char str[20];

			print_longlong (str, cword.ll);

			debug ("fwrite addr %p cmd %x %s 64 bit x %d bit\n",
			       addr, cmd, str,
			       info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
		}
#endif
		flash_write64(cword.ll, addr);
		break;
	}

	/* Ensure all the instructions are fully finished */
	sync();

	flash_unmap(info, sect, offset, addr);
}

static void flash_unlock_seq (flash_info_t * info, flash_sect_t sect)
{
	flash_write_cmd (info, sect, info->addr_unlock1, AMD_CMD_UNLOCK_START);
	flash_write_cmd (info, sect, info->addr_unlock2, AMD_CMD_UNLOCK_ACK);
}

/*-----------------------------------------------------------------------
 */
static int flash_isequal (flash_info_t * info, flash_sect_t sect,
			  uint offset, uchar cmd)
{
	void *addr;
	cfiword_t cword;
	int retval;

	addr = flash_map (info, sect, offset);
	flash_make_cmd (info, cmd, &cword);

	debug ("is= cmd %x(%c) addr %p ", cmd, cmd, addr);
	switch (info->portwidth) {
	case FLASH_CFI_8BIT:
		debug ("is= %x %x\n", flash_read8(addr), cword.c);
		retval = (flash_read8(addr) == cword.c);
		break;
	case FLASH_CFI_16BIT:
		debug ("is= %4.4x %4.4x\n", flash_read16(addr), cword.w);
		retval = (flash_read16(addr) == cword.w);
		break;
	case FLASH_CFI_32BIT:
		debug ("is= %8.8x %8.8lx\n", flash_read32(addr), cword.l);
		retval = (flash_read32(addr) == cword.l);
		break;
	case FLASH_CFI_64BIT:
#ifdef DEBUG
		{
			char str1[20];
			char str2[20];

			print_longlong (str1, flash_read64(addr));
			print_longlong (str2, cword.ll);
			debug ("is= %s %s\n", str1, str2);
		}
#endif
		retval = (flash_read64(addr) == cword.ll);
		break;
	default:
		retval = 0;
		break;
	}
	flash_unmap(info, sect, offset, addr);

	return retval;
}

/*-----------------------------------------------------------------------
 */
static int flash_isset (flash_info_t * info, flash_sect_t sect,
			uint offset, uchar cmd)
{
	void *addr;
	cfiword_t cword;
	int retval;

	addr = flash_map (info, sect, offset);
	flash_make_cmd (info, cmd, &cword);
	switch (info->portwidth) {
	case FLASH_CFI_8BIT:
		retval = ((flash_read8(addr) & cword.c) == cword.c);
		break;
	case FLASH_CFI_16BIT:
		retval = ((flash_read16(addr) & cword.w) == cword.w);
		break;
	case FLASH_CFI_32BIT:
		retval = ((flash_read32(addr) & cword.l) == cword.l);
		break;
	case FLASH_CFI_64BIT:
		retval = ((flash_read64(addr) & cword.ll) == cword.ll);
		break;
	default:
		retval = 0;
		break;
	}
	flash_unmap(info, sect, offset, addr);

	return retval;
}

/*-----------------------------------------------------------------------
 */
static int flash_toggle (flash_info_t * info, flash_sect_t sect,
			 uint offset, uchar cmd)
{
	void *addr;
	cfiword_t cword;
	int retval;

	addr = flash_map (info, sect, offset);
	flash_make_cmd (info, cmd, &cword);
	switch (info->portwidth) {
	case FLASH_CFI_8BIT:
		retval = flash_read8(addr) != flash_read8(addr);
		break;
	case FLASH_CFI_16BIT:
		retval = flash_read16(addr) != flash_read16(addr);
		break;
	case FLASH_CFI_32BIT:
		retval = flash_read32(addr) != flash_read32(addr);
		break;
	case FLASH_CFI_64BIT:
		retval = ( (flash_read32( addr ) != flash_read32( addr )) ||
			   (flash_read32(addr+4) != flash_read32(addr+4)) );
		break;
	default:
		retval = 0;
		break;
	}
	flash_unmap(info, sect, offset, addr);

	return retval;
}

/*
 * flash_is_busy - check to see if the flash is busy
 *
 * This routine checks the status of the chip and returns true if the
 * chip is busy.
 */
static int flash_is_busy (flash_info_t * info, flash_sect_t sect)
{
	int retval;

	switch (info->vendor) {
	case CFI_CMDSET_INTEL_PROG_REGIONS:
	case CFI_CMDSET_INTEL_STANDARD:
	case CFI_CMDSET_INTEL_EXTENDED:
		retval = !flash_isset (info, sect, 0, FLASH_STATUS_DONE);
		break;
	case CFI_CMDSET_AMD_STANDARD:
	case CFI_CMDSET_AMD_EXTENDED:
#ifdef CONFIG_FLASH_CFI_LEGACY
	case CFI_CMDSET_AMD_LEGACY:
#endif
		retval = flash_toggle (info, sect, 0, AMD_STATUS_TOGGLE);
		break;
	default:
		retval = 0;
	}
	debug ("flash_is_busy: %d\n", retval);
	return retval;
}

/*-----------------------------------------------------------------------
 *  wait for XSR.7 to be set. Time out with an error if it does not.
 *  This routine does not set the flash to read-array mode.
 */
static int flash_status_check (flash_info_t * info, flash_sect_t sector,
			       ulong tout, char *prompt)
{
	ulong start;

#if CONFIG_SYS_HZ != 1000
	tout *= CONFIG_SYS_HZ/1000;
#endif

	/* Wait for command completion */
	start = get_timer (0);
	while (flash_is_busy (info, sector)) {
		if (get_timer (start) > tout) {
			printf ("Flash %s timeout at address %lx data %lx\n",
				prompt, info->start[sector],
				flash_read_long (info, sector, 0));
			flash_write_cmd (info, sector, 0, info->cmd_reset);
			return ERR_TIMOUT;
		}
		udelay (1);		/* also triggers watchdog */
	}
	return ERR_OK;
}

/*-----------------------------------------------------------------------
 * Wait for XSR.7 to be set, if it times out print an error, otherwise
 * do a full status check.
 *
 * This routine sets the flash to read-array mode.
 */
static int flash_full_status_check (flash_info_t * info, flash_sect_t sector,
				    ulong tout, char *prompt)
{
	int retcode;

	retcode = flash_status_check (info, sector, tout, prompt);
	switch (info->vendor) {
	case CFI_CMDSET_INTEL_PROG_REGIONS:
	case CFI_CMDSET_INTEL_EXTENDED:
	case CFI_CMDSET_INTEL_STANDARD:
		if ((retcode != ERR_OK)
		    && !flash_isequal (info, sector, 0, FLASH_STATUS_DONE)) {
			retcode = ERR_INVAL;
			printf ("Flash %s error at address %lx\n", prompt,
				info->start[sector]);
			if (flash_isset (info, sector, 0, FLASH_STATUS_ECLBS |
					 FLASH_STATUS_PSLBS)) {
				puts ("Command Sequence Error.\n");
			} else if (flash_isset (info, sector, 0,
						FLASH_STATUS_ECLBS)) {
				puts ("Block Erase Error.\n");
				retcode = ERR_NOT_ERASED;
			} else if (flash_isset (info, sector, 0,
						FLASH_STATUS_PSLBS)) {
				puts ("Locking Error\n");
			}
			if (flash_isset (info, sector, 0, FLASH_STATUS_DPS)) {
				puts ("Block locked.\n");
				retcode = ERR_PROTECTED;
			}
			if (flash_isset (info, sector, 0, FLASH_STATUS_VPENS))
				puts ("Vpp Low Error.\n");
		}
		flash_write_cmd (info, sector, 0, info->cmd_reset);
		break;
	default:
		break;
	}
	return retcode;
}

/*-----------------------------------------------------------------------
 */
static void flash_add_byte (flash_info_t * info, cfiword_t * cword, uchar c)
{
#if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
	unsigned short	w;
	unsigned int	l;
	unsigned long long ll;
#endif

	switch (info->portwidth) {
	case FLASH_CFI_8BIT:
		cword->c = c;
		break;
	case FLASH_CFI_16BIT:
#if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
		w = c;
		w <<= 8;
		cword->w = (cword->w >> 8) | w;
#else
		cword->w = (cword->w << 8) | c;
#endif
		break;
	case FLASH_CFI_32BIT:
#if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
		l = c;
		l <<= 24;
		cword->l = (cword->l >> 8) | l;
#else
		cword->l = (cword->l << 8) | c;
#endif
		break;
	case FLASH_CFI_64BIT:
#if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
		ll = c;
		ll <<= 56;
		cword->ll = (cword->ll >> 8) | ll;
#else
		cword->ll = (cword->ll << 8) | c;
#endif
		break;
	}
}

/*
 * Loop through the sector table starting from the previously found sector.
 * Searches forwards or backwards, dependent on the passed address.
 */
static flash_sect_t find_sector (flash_info_t * info, ulong addr)
{
	static flash_sect_t saved_sector = 0; /* previously found sector */
	flash_sect_t sector = saved_sector;

	while ((info->start[sector] < addr)
			&& (sector < info->sector_count - 1))
		sector++;
	while ((info->start[sector] > addr) && (sector > 0))
		/*
		 * also decrements the sector in case of an overshot
		 * in the first loop
		 */
		sector--;

	saved_sector = sector;
	return sector;
}

/*-----------------------------------------------------------------------
 */
static int flash_write_cfiword (flash_info_t * info, ulong dest,
				cfiword_t cword)
{
	void *dstaddr = (void *)dest;
	int flag;
	flash_sect_t sect = 0;
	char sect_found = 0;

	/* Check if Flash is (sufficiently) erased */
	switch (info->portwidth) {
	case FLASH_CFI_8BIT:
		flag = ((flash_read8(dstaddr) & cword.c) == cword.c);
		break;
	case FLASH_CFI_16BIT:
		flag = ((flash_read16(dstaddr) & cword.w) == cword.w);
		break;
	case FLASH_CFI_32BIT:
		flag = ((flash_read32(dstaddr) & cword.l) == cword.l);
		break;
	case FLASH_CFI_64BIT:
		flag = ((flash_read64(dstaddr) & cword.ll) == cword.ll);
		break;
	default:
		flag = 0;
		break;
	}
	if (!flag)
		return ERR_NOT_ERASED;

	/* Disable interrupts which might cause a timeout here */
	flag = disable_interrupts ();

	switch (info->vendor) {
	case CFI_CMDSET_INTEL_PROG_REGIONS:
	case CFI_CMDSET_INTEL_EXTENDED:
	case CFI_CMDSET_INTEL_STANDARD:
		flash_write_cmd (info, 0, 0, FLASH_CMD_CLEAR_STATUS);
		flash_write_cmd (info, 0, 0, FLASH_CMD_WRITE);
		break;
	case CFI_CMDSET_AMD_EXTENDED:
	case CFI_CMDSET_AMD_STANDARD:
		sect = find_sector(info, dest);
		flash_unlock_seq (info, sect);
		flash_write_cmd (info, sect, info->addr_unlock1, AMD_CMD_WRITE);
		sect_found = 1;
		break;
#ifdef CONFIG_FLASH_CFI_LEGACY
	case CFI_CMDSET_AMD_LEGACY:
		sect = find_sector(info, dest);
		flash_unlock_seq (info, 0);
		flash_write_cmd (info, 0, info->addr_unlock1, AMD_CMD_WRITE);
		sect_found = 1;
		break;
#endif
	}

	switch (info->portwidth) {
	case FLASH_CFI_8BIT:
		flash_write8(cword.c, dstaddr);
		break;
	case FLASH_CFI_16BIT:
		flash_write16(cword.w, dstaddr);
		break;
	case FLASH_CFI_32BIT:
		flash_write32(cword.l, dstaddr);
		break;
	case FLASH_CFI_64BIT:
		flash_write64(cword.ll, dstaddr);
		break;
	}

	/* re-enable interrupts if necessary */
	if (flag)
		enable_interrupts ();

	if (!sect_found)
		sect = find_sector (info, dest);

	return flash_full_status_check (info, sect, info->write_tout, "write");
}

#ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE

static int flash_write_cfibuffer (flash_info_t * info, ulong dest, uchar * cp,
				  int len)
{
	flash_sect_t sector;
	int cnt;
	int retcode;
	void *src = cp;
	void *dst = (void *)dest;
	void *dst2 = dst;
	int flag = 0;
	uint offset = 0;
	unsigned int shift;
	uchar write_cmd;

	switch (info->portwidth) {
	case FLASH_CFI_8BIT:
		shift = 0;
		break;
	case FLASH_CFI_16BIT:
		shift = 1;
		break;
	case FLASH_CFI_32BIT:
		shift = 2;
		break;
	case FLASH_CFI_64BIT:
		shift = 3;
		break;
	default:
		retcode = ERR_INVAL;
		goto out_unmap;
	}

	cnt = len >> shift;

	while ((cnt-- > 0) && (flag == 0)) {
		switch (info->portwidth) {
		case FLASH_CFI_8BIT:
			flag = ((flash_read8(dst2) & flash_read8(src)) ==
				flash_read8(src));
			src += 1, dst2 += 1;
			break;
		case FLASH_CFI_16BIT:
			flag = ((flash_read16(dst2) & flash_read16(src)) ==
				flash_read16(src));
			src += 2, dst2 += 2;
			break;
		case FLASH_CFI_32BIT:
			flag = ((flash_read32(dst2) & flash_read32(src)) ==
				flash_read32(src));
			src += 4, dst2 += 4;
			break;
		case FLASH_CFI_64BIT:
			flag = ((flash_read64(dst2) & flash_read64(src)) ==
				flash_read64(src));
			src += 8, dst2 += 8;
			break;
		}
	}
	if (!flag) {
		retcode = ERR_NOT_ERASED;
		goto out_unmap;
	}

	src = cp;
	sector = find_sector (info, dest);

	switch (info->vendor) {
	case CFI_CMDSET_INTEL_PROG_REGIONS:
	case CFI_CMDSET_INTEL_STANDARD:
	case CFI_CMDSET_INTEL_EXTENDED:
		write_cmd = (info->vendor == CFI_CMDSET_INTEL_PROG_REGIONS) ?
					FLASH_CMD_WRITE_BUFFER_PROG : FLASH_CMD_WRITE_TO_BUFFER;
		flash_write_cmd (info, sector, 0, FLASH_CMD_CLEAR_STATUS);
		flash_write_cmd (info, sector, 0, FLASH_CMD_READ_STATUS);
		flash_write_cmd (info, sector, 0, write_cmd);
		retcode = flash_status_check (info, sector,
					      info->buffer_write_tout,
					      "write to buffer");
		if (retcode == ERR_OK) {
			/* reduce the number of loops by the width of
			 * the port */
			cnt = len >> shift;
			flash_write_cmd (info, sector, 0, cnt - 1);
			while (cnt-- > 0) {
				switch (info->portwidth) {
				case FLASH_CFI_8BIT:
					flash_write8(flash_read8(src), dst);
					src += 1, dst += 1;
					break;
				case FLASH_CFI_16BIT:
					flash_write16(flash_read16(src), dst);
					src += 2, dst += 2;
					break;
				case FLASH_CFI_32BIT:
					flash_write32(flash_read32(src), dst);
					src += 4, dst += 4;
					break;
				case FLASH_CFI_64BIT:
					flash_write64(flash_read64(src), dst);
					src += 8, dst += 8;
					break;
				default:
					retcode = ERR_INVAL;
					goto out_unmap;
				}
			}
			flash_write_cmd (info, sector, 0,
					 FLASH_CMD_WRITE_BUFFER_CONFIRM);
			retcode = flash_full_status_check (
				info, sector, info->buffer_write_tout,
				"buffer write");
		}

		break;

	case CFI_CMDSET_AMD_STANDARD:
	case CFI_CMDSET_AMD_EXTENDED:
		flash_unlock_seq(info,0);

#ifdef CONFIG_FLASH_SPANSION_S29WS_N
		offset = ((unsigned long)dst - info->start[sector]) >> shift;
#endif
		flash_write_cmd(info, sector, offset, AMD_CMD_WRITE_TO_BUFFER);
		cnt = len >> shift;
		flash_write_cmd(info, sector, offset, cnt - 1);

		switch (info->portwidth) {
		case FLASH_CFI_8BIT:
			while (cnt-- > 0) {
				flash_write8(flash_read8(src), dst);
				src += 1, dst += 1;
			}
			break;
		case FLASH_CFI_16BIT:
			while (cnt-- > 0) {
				flash_write16(flash_read16(src), dst);
				src += 2, dst += 2;
			}
			break;
		case FLASH_CFI_32BIT:
			while (cnt-- > 0) {
				flash_write32(flash_read32(src), dst);
				src += 4, dst += 4;
			}
			break;
		case FLASH_CFI_64BIT:
			while (cnt-- > 0) {
				flash_write64(flash_read64(src), dst);
				src += 8, dst += 8;
			}
			break;
		default:
			retcode = ERR_INVAL;
			goto out_unmap;
		}

		flash_write_cmd (info, sector, 0, AMD_CMD_WRITE_BUFFER_CONFIRM);
		retcode = flash_full_status_check (info, sector,
						   info->buffer_write_tout,
						   "buffer write");
		break;

	default:
		debug ("Unknown Command Set\n");
		retcode = ERR_INVAL;
		break;
	}

out_unmap:
	return retcode;
}
#endif /* CONFIG_SYS_FLASH_USE_BUFFER_WRITE */


/*-----------------------------------------------------------------------
 */
int flash_erase (flash_info_t * info, int s_first, int s_last)
{
	int rcode = 0;
	int prot;
	flash_sect_t sect;

	if (info->flash_id != FLASH_MAN_CFI) {
		puts ("Can't erase unknown flash type - aborted\n");
		return 1;
	}
	if ((s_first < 0) || (s_first > s_last)) {
		puts ("- no sectors to erase\n");
		return 1;
	}

	prot = 0;
	for (sect = s_first; sect <= s_last; ++sect) {
		if (info->protect[sect]) {
			prot++;
		}
	}
	if (prot) {
		printf ("- Warning: %d protected sectors will not be erased!\n",
			prot);
	} else if (flash_verbose) {
		putc ('\n');
	}


	for (sect = s_first; sect <= s_last; sect++) {
		if (info->protect[sect] == 0) { /* not protected */
			switch (info->vendor) {
			case CFI_CMDSET_INTEL_PROG_REGIONS:
			case CFI_CMDSET_INTEL_STANDARD:
			case CFI_CMDSET_INTEL_EXTENDED:
				flash_write_cmd (info, sect, 0,
						 FLASH_CMD_CLEAR_STATUS);
				flash_write_cmd (info, sect, 0,
						 FLASH_CMD_BLOCK_ERASE);
				flash_write_cmd (info, sect, 0,
						 FLASH_CMD_ERASE_CONFIRM);
				break;
			case CFI_CMDSET_AMD_STANDARD:
			case CFI_CMDSET_AMD_EXTENDED:
				flash_unlock_seq (info, sect);
				flash_write_cmd (info, sect,
						info->addr_unlock1,
						AMD_CMD_ERASE_START);
				flash_unlock_seq (info, sect);
				flash_write_cmd (info, sect, 0,
						 AMD_CMD_ERASE_SECTOR);
				break;
#ifdef CONFIG_FLASH_CFI_LEGACY
			case CFI_CMDSET_AMD_LEGACY:
				flash_unlock_seq (info, 0);
				flash_write_cmd (info, 0, info->addr_unlock1,
						AMD_CMD_ERASE_START);
				flash_unlock_seq (info, 0);
				flash_write_cmd (info, sect, 0,
						AMD_CMD_ERASE_SECTOR);
				break;
#endif
			default:
				debug ("Unkown flash vendor %d\n",
				       info->vendor);
				break;
			}

			if (flash_full_status_check
			    (info, sect, info->erase_blk_tout, "erase")) {
				rcode = 1;
			} else if (flash_verbose)
				putc ('.');
		}
	}

	if (flash_verbose)
		puts (" done\n");

	return rcode;
}

/*-----------------------------------------------------------------------
 */
void flash_print_info (flash_info_t * info)
{
	int i;

	if (info->flash_id != FLASH_MAN_CFI) {
		puts ("missing or unknown FLASH type\n");
		return;
	}

	printf ("%s FLASH (%d x %d)",
		info->name,
		(info->portwidth << 3), (info->chipwidth << 3));
	if (info->size < 1024*1024)
		printf ("  Size: %ld kB in %d Sectors\n",
			info->size >> 10, info->sector_count);
	else
		printf ("  Size: %ld MB in %d Sectors\n",
			info->size >> 20, info->sector_count);
	printf ("  ");
	switch (info->vendor) {
		case CFI_CMDSET_INTEL_PROG_REGIONS:
			printf ("Intel Prog Regions");
			break;
		case CFI_CMDSET_INTEL_STANDARD:
			printf ("Intel Standard");
			break;
		case CFI_CMDSET_INTEL_EXTENDED:
			printf ("Intel Extended");
			break;
		case CFI_CMDSET_AMD_STANDARD:
			printf ("AMD Standard");
			break;
		case CFI_CMDSET_AMD_EXTENDED:
			printf ("AMD Extended");
			break;
#ifdef CONFIG_FLASH_CFI_LEGACY
		case CFI_CMDSET_AMD_LEGACY:
			printf ("AMD Legacy");
			break;
#endif
		default:
			printf ("Unknown (%d)", info->vendor);
			break;
	}
	printf (" command set, Manufacturer ID: 0x%02X, Device ID: 0x%02X",
		info->manufacturer_id, info->device_id);
	if (info->device_id == 0x7E) {
		printf("%04X", info->device_id2);
	}
	printf ("\n  Erase timeout: %ld ms, write timeout: %ld ms\n",
		info->erase_blk_tout,
		info->write_tout);
	if (info->buffer_size > 1) {
		printf ("  Buffer write timeout: %ld ms, "
			"buffer size: %d bytes\n",
		info->buffer_write_tout,
		info->buffer_size);
	}

	puts ("\n  Sector Start Addresses:");
	for (i = 0; i < info->sector_count; ++i) {
		if ((i % 5) == 0)
			printf ("\n");
#ifdef CONFIG_SYS_FLASH_EMPTY_INFO
		int k;
		int size;
		int erased;
		volatile unsigned long *flash;

		/*
		 * Check if whole sector is erased
		 */
		size = flash_sector_size(info, i);
		erased = 1;
		flash = (volatile unsigned long *) info->start[i];
		size = size >> 2;	/* divide by 4 for longword access */
		for (k = 0; k < size; k++) {
			if (*flash++ != 0xffffffff) {
				erased = 0;
				break;
			}
		}

		/* print empty and read-only info */
		printf ("  %08lX %c %s ",
			info->start[i],
			erased ? 'E' : ' ',
			info->protect[i] ? "RO" : "  ");
#else	/* ! CONFIG_SYS_FLASH_EMPTY_INFO */
		printf ("  %08lX   %s ",
			info->start[i],
			info->protect[i] ? "RO" : "  ");
#endif
	}
	putc ('\n');
	return;
}

/*-----------------------------------------------------------------------
 * This is used in a few places in write_buf() to show programming
 * progress.  Making it a function is nasty because it needs to do side
 * effect updates to digit and dots.  Repeated code is nasty too, so
 * we define it once here.
 */
#ifdef CONFIG_FLASH_SHOW_PROGRESS
#define FLASH_SHOW_PROGRESS(scale, dots, digit, dots_sub) \
	if (flash_verbose) { \
		dots -= dots_sub; \
		if ((scale > 0) && (dots <= 0)) { \
			if ((digit % 5) == 0) \
				printf ("%d", digit / 5); \
			else \
				putc ('.'); \
			digit--; \
			dots += scale; \
		} \
	}
#else
#define FLASH_SHOW_PROGRESS(scale, dots, digit, dots_sub)
#endif

/*-----------------------------------------------------------------------
 * Copy memory to flash, returns:
 * 0 - OK
 * 1 - write timeout
 * 2 - Flash not erased
 */
int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
{
	ulong wp;
	uchar *p;
	int aln;
	cfiword_t cword;
	int i, rc;
#ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE
	int buffered_size;
#endif
#ifdef CONFIG_FLASH_SHOW_PROGRESS
	int digit = CONFIG_FLASH_SHOW_PROGRESS;
	int scale = 0;
	int dots  = 0;

	/*
	 * Suppress if there are fewer than CONFIG_FLASH_SHOW_PROGRESS writes.
	 */
	if (cnt >= CONFIG_FLASH_SHOW_PROGRESS) {
		scale = (int)((cnt + CONFIG_FLASH_SHOW_PROGRESS - 1) /
			CONFIG_FLASH_SHOW_PROGRESS);
	}
#endif

	/* get lower aligned address */
	wp = (addr & ~(info->portwidth - 1));

	/* handle unaligned start */
	if ((aln = addr - wp) != 0) {
		cword.l = 0;
		p = (uchar *)wp;
		for (i = 0; i < aln; ++i)
			flash_add_byte (info, &cword, flash_read8(p + i));

		for (; (i < info->portwidth) && (cnt > 0); i++) {
			flash_add_byte (info, &cword, *src++);
			cnt--;
		}
		for (; (cnt == 0) && (i < info->portwidth); ++i)
			flash_add_byte (info, &cword, flash_read8(p + i));

		rc = flash_write_cfiword (info, wp, cword);
		if (rc != 0)
			return rc;

		wp += i;
		FLASH_SHOW_PROGRESS(scale, dots, digit, i);
	}

	/* handle the aligned part */
#ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE
	buffered_size = (info->portwidth / info->chipwidth);
	buffered_size *= info->buffer_size;
	while (cnt >= info->portwidth) {
		/* prohibit buffer write when buffer_size is 1 */
		if (info->buffer_size == 1) {
			cword.l = 0;
			for (i = 0; i < info->portwidth; i++)
				flash_add_byte (info, &cword, *src++);
			if ((rc = flash_write_cfiword (info, wp, cword)) != 0)
				return rc;
			wp += info->portwidth;
			cnt -= info->portwidth;
			continue;
		}

		/* write buffer until next buffered_size aligned boundary */
		i = buffered_size - (wp % buffered_size);
		if (i > cnt)
			i = cnt;
		if ((rc = flash_write_cfibuffer (info, wp, src, i)) != ERR_OK)
			return rc;
		i -= i & (info->portwidth - 1);
		wp += i;
		src += i;
		cnt -= i;
		FLASH_SHOW_PROGRESS(scale, dots, digit, i);
	}
#else
	while (cnt >= info->portwidth) {
		cword.l = 0;
		for (i = 0; i < info->portwidth; i++) {
			flash_add_byte (info, &cword, *src++);
		}
		if ((rc = flash_write_cfiword (info, wp, cword)) != 0)
			return rc;
		wp += info->portwidth;
		cnt -= info->portwidth;
		FLASH_SHOW_PROGRESS(scale, dots, digit, info->portwidth);
	}
#endif /* CONFIG_SYS_FLASH_USE_BUFFER_WRITE */

	if (cnt == 0) {
		return (0);
	}

	/*
	 * handle unaligned tail bytes
	 */
	cword.l = 0;
	p = (uchar *)wp;
	for (i = 0; (i < info->portwidth) && (cnt > 0); ++i) {
		flash_add_byte (info, &cword, *src++);
		--cnt;
	}
	for (; i < info->portwidth; ++i)
		flash_add_byte (info, &cword, flash_read8(p + i));

	return flash_write_cfiword (info, wp, cword);
}

/*-----------------------------------------------------------------------
 */
#ifdef CONFIG_SYS_FLASH_PROTECTION

int flash_real_protect (flash_info_t * info, long sector, int prot)
{
	int retcode = 0;

	switch (info->vendor) {
		case CFI_CMDSET_INTEL_PROG_REGIONS:
		case CFI_CMDSET_INTEL_STANDARD:
		case CFI_CMDSET_INTEL_EXTENDED:
			flash_write_cmd (info, sector, 0,
					 FLASH_CMD_CLEAR_STATUS);
			flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT);
			if (prot)
				flash_write_cmd (info, sector, 0,
					FLASH_CMD_PROTECT_SET);
			else
				flash_write_cmd (info, sector, 0,
					FLASH_CMD_PROTECT_CLEAR);
			break;
		case CFI_CMDSET_AMD_EXTENDED:
		case CFI_CMDSET_AMD_STANDARD:
			/* U-Boot only checks the first byte */
			if (info->manufacturer_id == (uchar)ATM_MANUFACT) {
				if (prot) {
					flash_unlock_seq (info, 0);
					flash_write_cmd (info, 0,
							info->addr_unlock1,
							ATM_CMD_SOFTLOCK_START);
					flash_unlock_seq (info, 0);
					flash_write_cmd (info, sector, 0,
							ATM_CMD_LOCK_SECT);
				} else {
					flash_write_cmd (info, 0,
							info->addr_unlock1,
							AMD_CMD_UNLOCK_START);
					if (info->device_id == ATM_ID_BV6416)
						flash_write_cmd (info, sector,
							0, ATM_CMD_UNLOCK_SECT);
				}
			}
			break;
#ifdef CONFIG_FLASH_CFI_LEGACY
		case CFI_CMDSET_AMD_LEGACY:
			flash_write_cmd (info, sector, 0, FLASH_CMD_CLEAR_STATUS);
			flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT);
			if (prot)
				flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT_SET);
			else
				flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT_CLEAR);
#endif
	};

	if ((retcode =
	     flash_full_status_check (info, sector, info->erase_blk_tout,
				      prot ? "protect" : "unprotect")) == 0) {

		info->protect[sector] = prot;

		/*
		 * On some of Intel's flash chips (marked via legacy_unlock)
		 * unprotect unprotects all locking.
		 */
		if ((prot == 0) && (info->legacy_unlock)) {
			flash_sect_t i;

			for (i = 0; i < info->sector_count; i++) {
				if (info->protect[i])
					flash_real_protect (info, i, 1);
			}
		}
	}
	return retcode;
}

/*-----------------------------------------------------------------------
 * flash_read_user_serial - read the OneTimeProgramming cells
 */
void flash_read_user_serial (flash_info_t * info, void *buffer, int offset,
			     int len)
{
	uchar *src;
	uchar *dst;

	dst = buffer;
	src = flash_map (info, 0, FLASH_OFFSET_USER_PROTECTION);
	flash_write_cmd (info, 0, 0, FLASH_CMD_READ_ID);
	memcpy (dst, src + offset, len);
	flash_write_cmd (info, 0, 0, info->cmd_reset);
	flash_unmap(info, 0, FLASH_OFFSET_USER_PROTECTION, src);
}

/*
 * flash_read_factory_serial - read the device Id from the protection area
 */
void flash_read_factory_serial (flash_info_t * info, void *buffer, int offset,
				int len)
{
	uchar *src;

	src = flash_map (info, 0, FLASH_OFFSET_INTEL_PROTECTION);
	flash_write_cmd (info, 0, 0, FLASH_CMD_READ_ID);
	memcpy (buffer, src + offset, len);
	flash_write_cmd (info, 0, 0, info->cmd_reset);
	flash_unmap(info, 0, FLASH_OFFSET_INTEL_PROTECTION, src);
}

#endif /* CONFIG_SYS_FLASH_PROTECTION */

/*-----------------------------------------------------------------------
 * Reverse the order of the erase regions in the CFI QRY structure.
 * This is needed for chips that are either a) correctly detected as
 * top-boot, or b) buggy.
 */
static void cfi_reverse_geometry(struct cfi_qry *qry)
{
	unsigned int i, j;
	u32 tmp;

	for (i = 0, j = qry->num_erase_regions - 1; i < j; i++, j--) {
		tmp = qry->erase_region_info[i];
		qry->erase_region_info[i] = qry->erase_region_info[j];
		qry->erase_region_info[j] = tmp;
	}
}

/*-----------------------------------------------------------------------
 * read jedec ids from device and set corresponding fields in info struct
 *
 * Note: assume cfi->vendor, cfi->portwidth and cfi->chipwidth are correct
 *
 */
static void cmdset_intel_read_jedec_ids(flash_info_t *info)
{
	flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
	flash_write_cmd(info, 0, 0, FLASH_CMD_READ_ID);
	udelay(1000); /* some flash are slow to respond */
	info->manufacturer_id = flash_read_uchar (info,
					FLASH_OFFSET_MANUFACTURER_ID);
	info->device_id = flash_read_uchar (info,
					FLASH_OFFSET_DEVICE_ID);
	flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
}

static int cmdset_intel_init(flash_info_t *info, struct cfi_qry *qry)
{
	info->cmd_reset = FLASH_CMD_RESET;

	cmdset_intel_read_jedec_ids(info);
	flash_write_cmd(info, 0, info->cfi_offset, FLASH_CMD_CFI);

#ifdef CONFIG_SYS_FLASH_PROTECTION
	/* read legacy lock/unlock bit from intel flash */
	if (info->ext_addr) {
		info->legacy_unlock = flash_read_uchar (info,
				info->ext_addr + 5) & 0x08;
	}
#endif

	return 0;
}

static void cmdset_amd_read_jedec_ids(flash_info_t *info)
{
	ushort bankId = 0;
	uchar  manuId;

	flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
	flash_unlock_seq(info, 0);
	flash_write_cmd(info, 0, info->addr_unlock1, FLASH_CMD_READ_ID);
	udelay(1000); /* some flash are slow to respond */

	manuId = flash_read_uchar (info, FLASH_OFFSET_MANUFACTURER_ID);
	/* JEDEC JEP106Z specifies ID codes up to bank 7 */
	while (manuId == FLASH_CONTINUATION_CODE && bankId < 0x800) {
		bankId += 0x100;
		manuId = flash_read_uchar (info,
			bankId | FLASH_OFFSET_MANUFACTURER_ID);
	}
	info->manufacturer_id = manuId;

	switch (info->chipwidth){
	case FLASH_CFI_8BIT:
		info->device_id = flash_read_uchar (info,
						FLASH_OFFSET_DEVICE_ID);
		if (info->device_id == 0x7E) {
			/* AMD 3-byte (expanded) device ids */
			info->device_id2 = flash_read_uchar (info,
						FLASH_OFFSET_DEVICE_ID2);
			info->device_id2 <<= 8;
			info->device_id2 |= flash_read_uchar (info,
						FLASH_OFFSET_DEVICE_ID3);
		}
		break;
	case FLASH_CFI_16BIT:
		info->device_id = flash_read_word (info,
						FLASH_OFFSET_DEVICE_ID);
		break;
	default:
		break;
	}
	flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
}

static int cmdset_amd_init(flash_info_t *info, struct cfi_qry *qry)
{
	info->cmd_reset = AMD_CMD_RESET;

	cmdset_amd_read_jedec_ids(info);
	flash_write_cmd(info, 0, info->cfi_offset, FLASH_CMD_CFI);

	return 0;
}

#ifdef CONFIG_FLASH_CFI_LEGACY
static void flash_read_jedec_ids (flash_info_t * info)
{
	info->manufacturer_id = 0;
	info->device_id       = 0;
	info->device_id2      = 0;

	switch (info->vendor) {
	case CFI_CMDSET_INTEL_PROG_REGIONS:
	case CFI_CMDSET_INTEL_STANDARD:
	case CFI_CMDSET_INTEL_EXTENDED:
		cmdset_intel_read_jedec_ids(info);
		break;
	case CFI_CMDSET_AMD_STANDARD:
	case CFI_CMDSET_AMD_EXTENDED:
		cmdset_amd_read_jedec_ids(info);
		break;
	default:
		break;
	}
}

/*-----------------------------------------------------------------------
 * Call board code to request info about non-CFI flash.
 * board_flash_get_legacy needs to fill in at least:
 * info->portwidth, info->chipwidth and info->interface for Jedec probing.
 */
static int flash_detect_legacy(phys_addr_t base, int banknum)
{
	flash_info_t *info = &flash_info[banknum];

	if (board_flash_get_legacy(base, banknum, info)) {
		/* board code may have filled info completely. If not, we
		   use JEDEC ID probing. */
		if (!info->vendor) {
			int modes[] = {
				CFI_CMDSET_AMD_STANDARD,
				CFI_CMDSET_INTEL_STANDARD
			};
			int i;

			for (i = 0; i < sizeof(modes) / sizeof(modes[0]); i++) {
				info->vendor = modes[i];
				info->start[0] =
					(ulong)map_physmem(base,
							   info->portwidth,
							   MAP_NOCACHE);
				if (info->portwidth == FLASH_CFI_8BIT
					&& info->interface == FLASH_CFI_X8X16) {
					info->addr_unlock1 = 0x2AAA;
					info->addr_unlock2 = 0x5555;
				} else {
					info->addr_unlock1 = 0x5555;
					info->addr_unlock2 = 0x2AAA;
				}
				flash_read_jedec_ids(info);
				debug("JEDEC PROBE: ID %x %x %x\n",
						info->manufacturer_id,
						info->device_id,
						info->device_id2);
				if (jedec_flash_match(info, info->start[0]))
					break;
				else
					unmap_physmem((void *)info->start[0],
						      MAP_NOCACHE);
			}
		}

		switch(info->vendor) {
		case CFI_CMDSET_INTEL_PROG_REGIONS:
		case CFI_CMDSET_INTEL_STANDARD:
		case CFI_CMDSET_INTEL_EXTENDED:
			info->cmd_reset = FLASH_CMD_RESET;
			break;
		case CFI_CMDSET_AMD_STANDARD:
		case CFI_CMDSET_AMD_EXTENDED:
		case CFI_CMDSET_AMD_LEGACY:
			info->cmd_reset = AMD_CMD_RESET;
			break;
		}
		info->flash_id = FLASH_MAN_CFI;
		return 1;
	}
	return 0; /* use CFI */
}
#else
static inline int flash_detect_legacy(phys_addr_t base, int banknum)
{
	return 0; /* use CFI */
}
#endif

/*-----------------------------------------------------------------------
 * detect if flash is compatible with the Common Flash Interface (CFI)
 * http://www.jedec.org/download/search/jesd68.pdf
 */
static void flash_read_cfi (flash_info_t *info, void *buf,
		unsigned int start, size_t len)
{
	u8 *p = buf;
	unsigned int i;

	for (i = 0; i < len; i++)
		p[i] = flash_read_uchar(info, start + i);
}

void __flash_cmd_reset(flash_info_t *info)
{
	/*
	 * We do not yet know what kind of commandset to use, so we issue
	 * the reset command in both Intel and AMD variants, in the hope
	 * that AMD flash roms ignore the Intel command.
	 */
	flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
	flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
}
void flash_cmd_reset(flash_info_t *info)
	__attribute__((weak,alias("__flash_cmd_reset")));

static int __flash_detect_cfi (flash_info_t * info, struct cfi_qry *qry)
{
	int cfi_offset;

	/* Issue FLASH reset command */
	flash_cmd_reset(info);

	for (cfi_offset=0;
	     cfi_offset < sizeof(flash_offset_cfi) / sizeof(uint);
	     cfi_offset++) {
		flash_write_cmd (info, 0, flash_offset_cfi[cfi_offset],
				 FLASH_CMD_CFI);
		if (flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP, 'Q')
		    && flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP + 1, 'R')
		    && flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP + 2, 'Y')) {
			flash_read_cfi(info, qry, FLASH_OFFSET_CFI_RESP,
					sizeof(struct cfi_qry));
			info->interface	= le16_to_cpu(qry->interface_desc);

			info->cfi_offset = flash_offset_cfi[cfi_offset];
			debug ("device interface is %d\n",
			       info->interface);
			debug ("found port %d chip %d ",
			       info->portwidth, info->chipwidth);
			debug ("port %d bits chip %d bits\n",
			       info->portwidth << CFI_FLASH_SHIFT_WIDTH,
			       info->chipwidth << CFI_FLASH_SHIFT_WIDTH);

			/* calculate command offsets as in the Linux driver */
			info->addr_unlock1 = 0x555;
			info->addr_unlock2 = 0x2aa;

			/*
			 * modify the unlock address if we are
			 * in compatibility mode
			 */
			if (	/* x8/x16 in x8 mode */
				((info->chipwidth == FLASH_CFI_BY8) &&
					(info->interface == FLASH_CFI_X8X16)) ||
				/* x16/x32 in x16 mode */
				((info->chipwidth == FLASH_CFI_BY16) &&
					(info->interface == FLASH_CFI_X16X32)))
			{
				info->addr_unlock1 = 0xaaa;
				info->addr_unlock2 = 0x555;
			}

			info->name = "CFI conformant";
			return 1;
		}
	}

	return 0;
}

static int flash_detect_cfi (flash_info_t * info, struct cfi_qry *qry)
{
	debug ("flash detect cfi\n");

	for (info->portwidth = CONFIG_SYS_FLASH_CFI_WIDTH;
	     info->portwidth <= FLASH_CFI_64BIT; info->portwidth <<= 1) {
		for (info->chipwidth = FLASH_CFI_BY8;
		     info->chipwidth <= info->portwidth;
		     info->chipwidth <<= 1)
			if (__flash_detect_cfi(info, qry))
				return 1;
	}
	debug ("not found\n");
	return 0;
}

/*
 * Manufacturer-specific quirks. Add workarounds for geometry
 * reversal, etc. here.
 */
static void flash_fixup_amd(flash_info_t *info, struct cfi_qry *qry)
{
	/* check if flash geometry needs reversal */
	if (qry->num_erase_regions > 1) {
		/* reverse geometry if top boot part */
		if (info->cfi_version < 0x3131) {
			/* CFI < 1.1, try to guess from device id */
			if ((info->device_id & 0x80) != 0)
				cfi_reverse_geometry(qry);
		} else if (flash_read_uchar(info, info->ext_addr + 0xf) == 3) {
			/* CFI >= 1.1, deduct from top/bottom flag */
			/* note: ext_addr is valid since cfi_version > 0 */
			cfi_reverse_geometry(qry);
		}
	}
}

static void flash_fixup_atmel(flash_info_t *info, struct cfi_qry *qry)
{
	int reverse_geometry = 0;

	/* Check the "top boot" bit in the PRI */
	if (info->ext_addr && !(flash_read_uchar(info, info->ext_addr + 6) & 1))
		reverse_geometry = 1;

	/* AT49BV6416(T) list the erase regions in the wrong order.
	 * However, the device ID is identical with the non-broken
	 * AT49BV642D they differ in the high byte.
	 */
	if (info->device_id == 0xd6 || info->device_id == 0xd2)
		reverse_geometry = !reverse_geometry;

	if (reverse_geometry)
		cfi_reverse_geometry(qry);
}

static void flash_fixup_stm(flash_info_t *info, struct cfi_qry *qry)
{
	/* check if flash geometry needs reversal */
	if (qry->num_erase_regions > 1) {
		/* reverse geometry if top boot part */
		if (info->cfi_version < 0x3131) {
			/* CFI < 1.1, guess by device id (M29W320{DT,ET} only) */
			if (info->device_id == 0x22CA ||
			    info->device_id == 0x2256) {
				cfi_reverse_geometry(qry);
			}
		}
	}
}

/*
 * The following code cannot be run from FLASH!
 *
 */
ulong flash_get_size (phys_addr_t base, int banknum)
{
	flash_info_t *info = &flash_info[banknum];
	int i, j;
	flash_sect_t sect_cnt;
	phys_addr_t sector;
	unsigned long tmp;
	int size_ratio;
	uchar num_erase_regions;
	int erase_region_size;
	int erase_region_count;
	struct cfi_qry qry;

	memset(&qry, 0, sizeof(qry));

	info->ext_addr = 0;
	info->cfi_version = 0;
#ifdef CONFIG_SYS_FLASH_PROTECTION
	info->legacy_unlock = 0;
#endif

	info->start[0] = (ulong)map_physmem(base, info->portwidth, MAP_NOCACHE);

	if (flash_detect_cfi (info, &qry)) {
		info->vendor = le16_to_cpu(qry.p_id);
		info->ext_addr = le16_to_cpu(qry.p_adr);
		num_erase_regions = qry.num_erase_regions;

		if (info->ext_addr) {
			info->cfi_version = (ushort) flash_read_uchar (info,
						info->ext_addr + 3) << 8;
			info->cfi_version |= (ushort) flash_read_uchar (info,
						info->ext_addr + 4);
		}

#ifdef DEBUG
		flash_printqry (&qry);
#endif

		switch (info->vendor) {
		case CFI_CMDSET_INTEL_PROG_REGIONS:
		case CFI_CMDSET_INTEL_STANDARD:
		case CFI_CMDSET_INTEL_EXTENDED:
			cmdset_intel_init(info, &qry);
			break;
		case CFI_CMDSET_AMD_STANDARD:
		case CFI_CMDSET_AMD_EXTENDED:
			cmdset_amd_init(info, &qry);
			break;
		default:
			printf("CFI: Unknown command set 0x%x\n",
					info->vendor);
			/*
			 * Unfortunately, this means we don't know how
			 * to get the chip back to Read mode. Might
			 * as well try an Intel-style reset...
			 */
			flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
			return 0;
		}

		/* Do manufacturer-specific fixups */
		switch (info->manufacturer_id) {
		case 0x0001:
			flash_fixup_amd(info, &qry);
			break;
		case 0x001f:
			flash_fixup_atmel(info, &qry);
			break;
		case 0x0020:
			flash_fixup_stm(info, &qry);
			break;
		}

		debug ("manufacturer is %d\n", info->vendor);
		debug ("manufacturer id is 0x%x\n", info->manufacturer_id);
		debug ("device id is 0x%x\n", info->device_id);
		debug ("device id2 is 0x%x\n", info->device_id2);
		debug ("cfi version is 0x%04x\n", info->cfi_version);

		size_ratio = info->portwidth / info->chipwidth;
		/* if the chip is x8/x16 reduce the ratio by half */
		if ((info->interface == FLASH_CFI_X8X16)
		    && (info->chipwidth == FLASH_CFI_BY8)) {
			size_ratio >>= 1;
		}
		debug ("size_ratio %d port %d bits chip %d bits\n",
		       size_ratio, info->portwidth << CFI_FLASH_SHIFT_WIDTH,
		       info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
		debug ("found %d erase regions\n", num_erase_regions);
		sect_cnt = 0;
		sector = base;
		for (i = 0; i < num_erase_regions; i++) {
			if (i > NUM_ERASE_REGIONS) {
				printf ("%d erase regions found, only %d used\n",
					num_erase_regions, NUM_ERASE_REGIONS);
				break;
			}

			tmp = le32_to_cpu(qry.erase_region_info[i]);
			debug("erase region %u: 0x%08lx\n", i, tmp);

			erase_region_count = (tmp & 0xffff) + 1;
			tmp >>= 16;
			erase_region_size =
				(tmp & 0xffff) ? ((tmp & 0xffff) * 256) : 128;
			debug ("erase_region_count = %d erase_region_size = %d\n",
				erase_region_count, erase_region_size);
			for (j = 0; j < erase_region_count; j++) {
				if (sect_cnt >= CONFIG_SYS_MAX_FLASH_SECT) {
					printf("ERROR: too many flash sectors\n");
					break;
				}
				info->start[sect_cnt] =
					(ulong)map_physmem(sector,
							   info->portwidth,
							   MAP_NOCACHE);
				sector += (erase_region_size * size_ratio);

				/*
				 * Only read protection status from
				 * supported devices (intel...)
				 */
				switch (info->vendor) {
				case CFI_CMDSET_INTEL_PROG_REGIONS:
				case CFI_CMDSET_INTEL_EXTENDED:
				case CFI_CMDSET_INTEL_STANDARD:
					info->protect[sect_cnt] =
						flash_isset (info, sect_cnt,
							     FLASH_OFFSET_PROTECT,
							     FLASH_STATUS_PROTECT);
					break;
				default:
					/* default: not protected */
					info->protect[sect_cnt] = 0;
				}

				sect_cnt++;
			}
		}

		info->sector_count = sect_cnt;
		info->size = 1 << qry.dev_size;
		/* multiply the size by the number of chips */
		info->size *= size_ratio;
		info->buffer_size = 1 << le16_to_cpu(qry.max_buf_write_size);
		tmp = 1 << qry.block_erase_timeout_typ;
		info->erase_blk_tout = tmp *
			(1 << qry.block_erase_timeout_max);
		tmp = (1 << qry.buf_write_timeout_typ) *
			(1 << qry.buf_write_timeout_max);

		/* round up when converting to ms */
		info->buffer_write_tout = (tmp + 999) / 1000;
		tmp = (1 << qry.word_write_timeout_typ) *
			(1 << qry.word_write_timeout_max);
		/* round up when converting to ms */
		info->write_tout = (tmp + 999) / 1000;
		info->flash_id = FLASH_MAN_CFI;
		if ((info->interface == FLASH_CFI_X8X16) &&
		    (info->chipwidth == FLASH_CFI_BY8)) {
			/* XXX - Need to test on x8/x16 in parallel. */
			info->portwidth >>= 1;
		}

		flash_write_cmd (info, 0, 0, info->cmd_reset);
	}

	return (info->size);
}

void flash_set_verbose(uint v)
{
	flash_verbose = v;
}

/*-----------------------------------------------------------------------
 */
unsigned long flash_init (void)
{
	unsigned long size = 0;
	int i;
#if defined(CONFIG_SYS_FLASH_AUTOPROTECT_LIST)
	struct apl_s {
		ulong start;
		ulong size;
	} apl[] = CONFIG_SYS_FLASH_AUTOPROTECT_LIST;
#endif

#ifdef CONFIG_SYS_FLASH_PROTECTION
	/* read environment from EEPROM */
	char s[64];
	getenv_r ("unlock", s, sizeof(s));
#endif

#define BANK_BASE(i)	(((phys_addr_t [CFI_MAX_FLASH_BANKS])CONFIG_SYS_FLASH_BANKS_LIST)[i])

	/* Init: no FLASHes known */
	for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
		flash_info[i].flash_id = FLASH_UNKNOWN;

		if (!flash_detect_legacy (BANK_BASE(i), i))
			flash_get_size (BANK_BASE(i), i);
		size += flash_info[i].size;
		if (flash_info[i].flash_id == FLASH_UNKNOWN) {
#ifndef CONFIG_SYS_FLASH_QUIET_TEST
			printf ("## Unknown FLASH on Bank %d "
				"- Size = 0x%08lx = %ld MB\n",
				i+1, flash_info[i].size,
				flash_info[i].size << 20);
#endif /* CONFIG_SYS_FLASH_QUIET_TEST */
		}
#ifdef CONFIG_SYS_FLASH_PROTECTION
		else if ((s != NULL) && (strcmp(s, "yes") == 0)) {
			/*
			 * Only the U-Boot image and it's environment
			 * is protected, all other sectors are
			 * unprotected (unlocked) if flash hardware
			 * protection is used (CONFIG_SYS_FLASH_PROTECTION)
			 * and the environment variable "unlock" is
			 * set to "yes".
			 */
			if (flash_info[i].legacy_unlock) {
				int k;

				/*
				 * Disable legacy_unlock temporarily,
				 * since flash_real_protect would
				 * relock all other sectors again
				 * otherwise.
				 */
				flash_info[i].legacy_unlock = 0;

				/*
				 * Legacy unlocking (e.g. Intel J3) ->
				 * unlock only one sector. This will
				 * unlock all sectors.
				 */
				flash_real_protect (&flash_info[i], 0, 0);

				flash_info[i].legacy_unlock = 1;

				/*
				 * Manually mark other sectors as
				 * unlocked (unprotected)
				 */
				for (k = 1; k < flash_info[i].sector_count; k++)
					flash_info[i].protect[k] = 0;
			} else {
				/*
				 * No legancy unlocking -> unlock all sectors
				 */
				flash_protect (FLAG_PROTECT_CLEAR,
					       flash_info[i].start[0],
					       flash_info[i].start[0]
					       + flash_info[i].size - 1,
					       &flash_info[i]);
			}
		}
#endif /* CONFIG_SYS_FLASH_PROTECTION */
	}

	/* Monitor protection ON by default */
#if (CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE)
	flash_protect (FLAG_PROTECT_SET,
		       CONFIG_SYS_MONITOR_BASE,
		       CONFIG_SYS_MONITOR_BASE + monitor_flash_len  - 1,
		       flash_get_info(CONFIG_SYS_MONITOR_BASE));
#endif

	/* Environment protection ON by default */
#ifdef CONFIG_ENV_IS_IN_FLASH
	flash_protect (FLAG_PROTECT_SET,
		       CONFIG_ENV_ADDR,
		       CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1,
		       flash_get_info(CONFIG_ENV_ADDR));
#endif

	/* Redundant environment protection ON by default */
#ifdef CONFIG_ENV_ADDR_REDUND
	flash_protect (FLAG_PROTECT_SET,
		       CONFIG_ENV_ADDR_REDUND,
		       CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1,
		       flash_get_info(CONFIG_ENV_ADDR_REDUND));
#endif

#if defined(CONFIG_SYS_FLASH_AUTOPROTECT_LIST)
	for (i = 0; i < (sizeof(apl) / sizeof(struct apl_s)); i++) {
		debug("autoprotecting from %08x to %08x\n",
		      apl[i].start, apl[i].start + apl[i].size - 1);
		flash_protect (FLAG_PROTECT_SET,
			       apl[i].start,
			       apl[i].start + apl[i].size - 1,
			       flash_get_info(apl[i].start));
	}
#endif

#ifdef CONFIG_FLASH_CFI_MTD
	cfi_mtd_init();
#endif

	return (size);
}