summaryrefslogtreecommitdiff
path: root/common/image-fit.c
blob: d8d4e9503020c958e765802730d1a4493cbe23e5 (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
/*
 * Copyright (c) 2013, Google Inc.
 *
 * (C) Copyright 2008 Semihalf
 *
 * (C) Copyright 2000-2006
 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#ifdef USE_HOSTCC
#include "mkimage.h"
#include <time.h>
#else
#include <linux/compiler.h>
#include <common.h>
#include <errno.h>
#include <mapmem.h>
#include <asm/io.h>
DECLARE_GLOBAL_DATA_PTR;
#endif /* !USE_HOSTCC*/

#include <image.h>
#include <bootstage.h>
#include <u-boot/crc.h>
#include <u-boot/md5.h>
#include <u-boot/sha1.h>
#include <u-boot/sha256.h>

/*****************************************************************************/
/* New uImage format routines */
/*****************************************************************************/
#ifndef USE_HOSTCC
static int fit_parse_spec(const char *spec, char sepc, ulong addr_curr,
		ulong *addr, const char **name)
{
	const char *sep;

	*addr = addr_curr;
	*name = NULL;

	sep = strchr(spec, sepc);
	if (sep) {
		if (sep - spec > 0)
			*addr = simple_strtoul(spec, NULL, 16);

		*name = sep + 1;
		return 1;
	}

	return 0;
}

/**
 * fit_parse_conf - parse FIT configuration spec
 * @spec: input string, containing configuration spec
 * @add_curr: current image address (to be used as a possible default)
 * @addr: pointer to a ulong variable, will hold FIT image address of a given
 * configuration
 * @conf_name double pointer to a char, will hold pointer to a configuration
 * unit name
 *
 * fit_parse_conf() expects configuration spec in the form of [<addr>]#<conf>,
 * where <addr> is a FIT image address that contains configuration
 * with a <conf> unit name.
 *
 * Address part is optional, and if omitted default add_curr will
 * be used instead.
 *
 * returns:
 *     1 if spec is a valid configuration string,
 *     addr and conf_name are set accordingly
 *     0 otherwise
 */
int fit_parse_conf(const char *spec, ulong addr_curr,
		ulong *addr, const char **conf_name)
{
	return fit_parse_spec(spec, '#', addr_curr, addr, conf_name);
}

/**
 * fit_parse_subimage - parse FIT subimage spec
 * @spec: input string, containing subimage spec
 * @add_curr: current image address (to be used as a possible default)
 * @addr: pointer to a ulong variable, will hold FIT image address of a given
 * subimage
 * @image_name: double pointer to a char, will hold pointer to a subimage name
 *
 * fit_parse_subimage() expects subimage spec in the form of
 * [<addr>]:<subimage>, where <addr> is a FIT image address that contains
 * subimage with a <subimg> unit name.
 *
 * Address part is optional, and if omitted default add_curr will
 * be used instead.
 *
 * returns:
 *     1 if spec is a valid subimage string,
 *     addr and image_name are set accordingly
 *     0 otherwise
 */
int fit_parse_subimage(const char *spec, ulong addr_curr,
		ulong *addr, const char **image_name)
{
	return fit_parse_spec(spec, ':', addr_curr, addr, image_name);
}
#endif /* !USE_HOSTCC */

static void fit_get_debug(const void *fit, int noffset,
		char *prop_name, int err)
{
	debug("Can't get '%s' property from FIT 0x%08lx, node: offset %d, name %s (%s)\n",
	      prop_name, (ulong)fit, noffset, fit_get_name(fit, noffset, NULL),
	      fdt_strerror(err));
}

/**
 * fit_get_subimage_count - get component (sub-image) count
 * @fit: pointer to the FIT format image header
 * @images_noffset: offset of images node
 *
 * returns:
 *     number of image components
 */
int fit_get_subimage_count(const void *fit, int images_noffset)
{
	int noffset;
	int ndepth;
	int count = 0;

	/* Process its subnodes, print out component images details */
	for (ndepth = 0, count = 0,
		noffset = fdt_next_node(fit, images_noffset, &ndepth);
	     (noffset >= 0) && (ndepth > 0);
	     noffset = fdt_next_node(fit, noffset, &ndepth)) {
		if (ndepth == 1) {
			count++;
		}
	}

	return count;
}

#if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_FIT_SPL_PRINT)
/**
 * fit_print_contents - prints out the contents of the FIT format image
 * @fit: pointer to the FIT format image header
 * @p: pointer to prefix string
 *
 * fit_print_contents() formats a multi line FIT image contents description.
 * The routine prints out FIT image properties (root node level) followed by
 * the details of each component image.
 *
 * returns:
 *     no returned results
 */
void fit_print_contents(const void *fit)
{
	char *desc;
	char *uname;
	int images_noffset;
	int confs_noffset;
	int noffset;
	int ndepth;
	int count = 0;
	int ret;
	const char *p;
	time_t timestamp;

	/* Indent string is defined in header image.h */
	p = IMAGE_INDENT_STRING;

	/* Root node properties */
	ret = fit_get_desc(fit, 0, &desc);
	printf("%sFIT description: ", p);
	if (ret)
		printf("unavailable\n");
	else
		printf("%s\n", desc);

	if (IMAGE_ENABLE_TIMESTAMP) {
		ret = fit_get_timestamp(fit, 0, &timestamp);
		printf("%sCreated:         ", p);
		if (ret)
			printf("unavailable\n");
		else
			genimg_print_time(timestamp);
	}

	/* Find images parent node offset */
	images_noffset = fdt_path_offset(fit, FIT_IMAGES_PATH);
	if (images_noffset < 0) {
		printf("Can't find images parent node '%s' (%s)\n",
		       FIT_IMAGES_PATH, fdt_strerror(images_noffset));
		return;
	}

	/* Process its subnodes, print out component images details */
	for (ndepth = 0, count = 0,
		noffset = fdt_next_node(fit, images_noffset, &ndepth);
	     (noffset >= 0) && (ndepth > 0);
	     noffset = fdt_next_node(fit, noffset, &ndepth)) {
		if (ndepth == 1) {
			/*
			 * Direct child node of the images parent node,
			 * i.e. component image node.
			 */
			printf("%s Image %u (%s)\n", p, count++,
			       fit_get_name(fit, noffset, NULL));

			fit_image_print(fit, noffset, p);
		}
	}

	/* Find configurations parent node offset */
	confs_noffset = fdt_path_offset(fit, FIT_CONFS_PATH);
	if (confs_noffset < 0) {
		debug("Can't get configurations parent node '%s' (%s)\n",
		      FIT_CONFS_PATH, fdt_strerror(confs_noffset));
		return;
	}

	/* get default configuration unit name from default property */
	uname = (char *)fdt_getprop(fit, noffset, FIT_DEFAULT_PROP, NULL);
	if (uname)
		printf("%s Default Configuration: '%s'\n", p, uname);

	/* Process its subnodes, print out configurations details */
	for (ndepth = 0, count = 0,
		noffset = fdt_next_node(fit, confs_noffset, &ndepth);
	     (noffset >= 0) && (ndepth > 0);
	     noffset = fdt_next_node(fit, noffset, &ndepth)) {
		if (ndepth == 1) {
			/*
			 * Direct child node of the configurations parent node,
			 * i.e. configuration node.
			 */
			printf("%s Configuration %u (%s)\n", p, count++,
			       fit_get_name(fit, noffset, NULL));

			fit_conf_print(fit, noffset, p);
		}
	}
}

/**
 * fit_image_print_data() - prints out the hash node details
 * @fit: pointer to the FIT format image header
 * @noffset: offset of the hash node
 * @p: pointer to prefix string
 * @type: Type of information to print ("hash" or "sign")
 *
 * fit_image_print_data() lists properties for the processed hash node
 *
 * This function avoid using puts() since it prints a newline on the host
 * but does not in U-Boot.
 *
 * returns:
 *     no returned results
 */
static void fit_image_print_data(const void *fit, int noffset, const char *p,
				 const char *type)
{
	const char *keyname;
	uint8_t *value;
	int value_len;
	char *algo;
	int required;
	int ret, i;

	debug("%s  %s node:    '%s'\n", p, type,
	      fit_get_name(fit, noffset, NULL));
	printf("%s  %s algo:    ", p, type);
	if (fit_image_hash_get_algo(fit, noffset, &algo)) {
		printf("invalid/unsupported\n");
		return;
	}
	printf("%s", algo);
	keyname = fdt_getprop(fit, noffset, "key-name-hint", NULL);
	required = fdt_getprop(fit, noffset, "required", NULL) != NULL;
	if (keyname)
		printf(":%s", keyname);
	if (required)
		printf(" (required)");
	printf("\n");

	ret = fit_image_hash_get_value(fit, noffset, &value,
					&value_len);
	printf("%s  %s value:   ", p, type);
	if (ret) {
		printf("unavailable\n");
	} else {
		for (i = 0; i < value_len; i++)
			printf("%02x", value[i]);
		printf("\n");
	}

	debug("%s  %s len:     %d\n", p, type, value_len);

	/* Signatures have a time stamp */
	if (IMAGE_ENABLE_TIMESTAMP && keyname) {
		time_t timestamp;

		printf("%s  Timestamp:    ", p);
		if (fit_get_timestamp(fit, noffset, &timestamp))
			printf("unavailable\n");
		else
			genimg_print_time(timestamp);
	}
}

/**
 * fit_image_print_verification_data() - prints out the hash/signature details
 * @fit: pointer to the FIT format image header
 * @noffset: offset of the hash or signature node
 * @p: pointer to prefix string
 *
 * This lists properties for the processed hash node
 *
 * returns:
 *     no returned results
 */
static void fit_image_print_verification_data(const void *fit, int noffset,
				       const char *p)
{
	const char *name;

	/*
	 * Check subnode name, must be equal to "hash" or "signature".
	 * Multiple hash/signature nodes require unique unit node
	 * names, e.g. hash@1, hash@2, signature@1, signature@2, etc.
	 */
	name = fit_get_name(fit, noffset, NULL);
	if (!strncmp(name, FIT_HASH_NODENAME, strlen(FIT_HASH_NODENAME))) {
		fit_image_print_data(fit, noffset, p, "Hash");
	} else if (!strncmp(name, FIT_SIG_NODENAME,
				strlen(FIT_SIG_NODENAME))) {
		fit_image_print_data(fit, noffset, p, "Sign");
	}
}

/**
 * fit_image_print - prints out the FIT component image details
 * @fit: pointer to the FIT format image header
 * @image_noffset: offset of the component image node
 * @p: pointer to prefix string
 *
 * fit_image_print() lists all mandatory properties for the processed component
 * image. If present, hash nodes are printed out as well. Load
 * address for images of type firmware is also printed out. Since the load
 * address is not mandatory for firmware images, it will be output as
 * "unavailable" when not present.
 *
 * returns:
 *     no returned results
 */
void fit_image_print(const void *fit, int image_noffset, const char *p)
{
	char *desc;
	uint8_t type, arch, os, comp;
	size_t size;
	ulong load, entry;
	const void *data;
	int noffset;
	int ndepth;
	int ret;

	/* Mandatory properties */
	ret = fit_get_desc(fit, image_noffset, &desc);
	printf("%s  Description:  ", p);
	if (ret)
		printf("unavailable\n");
	else
		printf("%s\n", desc);

	if (IMAGE_ENABLE_TIMESTAMP) {
		time_t timestamp;

		ret = fit_get_timestamp(fit, 0, &timestamp);
		printf("%s  Created:      ", p);
		if (ret)
			printf("unavailable\n");
		else
			genimg_print_time(timestamp);
	}

	fit_image_get_type(fit, image_noffset, &type);
	printf("%s  Type:         %s\n", p, genimg_get_type_name(type));

	fit_image_get_comp(fit, image_noffset, &comp);
	printf("%s  Compression:  %s\n", p, genimg_get_comp_name(comp));

	ret = fit_image_get_data(fit, image_noffset, &data, &size);

#ifndef USE_HOSTCC
	printf("%s  Data Start:   ", p);
	if (ret) {
		printf("unavailable\n");
	} else {
		void *vdata = (void *)data;

		printf("0x%08lx\n", (ulong)map_to_sysmem(vdata));
	}
#endif

	printf("%s  Data Size:    ", p);
	if (ret)
		printf("unavailable\n");
	else
		genimg_print_size(size);

	/* Remaining, type dependent properties */
	if ((type == IH_TYPE_KERNEL) || (type == IH_TYPE_STANDALONE) ||
	    (type == IH_TYPE_RAMDISK) || (type == IH_TYPE_FIRMWARE) ||
	    (type == IH_TYPE_FLATDT)) {
		fit_image_get_arch(fit, image_noffset, &arch);
		printf("%s  Architecture: %s\n", p, genimg_get_arch_name(arch));
	}

	if ((type == IH_TYPE_KERNEL) || (type == IH_TYPE_RAMDISK)) {
		fit_image_get_os(fit, image_noffset, &os);
		printf("%s  OS:           %s\n", p, genimg_get_os_name(os));
	}

	if ((type == IH_TYPE_KERNEL) || (type == IH_TYPE_STANDALONE) ||
	    (type == IH_TYPE_FIRMWARE) || (type == IH_TYPE_RAMDISK) ||
	    (type == IH_TYPE_FPGA)) {
		ret = fit_image_get_load(fit, image_noffset, &load);
		printf("%s  Load Address: ", p);
		if (ret)
			printf("unavailable\n");
		else
			printf("0x%08lx\n", load);
	}

	if ((type == IH_TYPE_KERNEL) || (type == IH_TYPE_STANDALONE) ||
	    (type == IH_TYPE_RAMDISK)) {
		ret = fit_image_get_entry(fit, image_noffset, &entry);
		printf("%s  Entry Point:  ", p);
		if (ret)
			printf("unavailable\n");
		else
			printf("0x%08lx\n", entry);
	}

	/* Process all hash subnodes of the component image node */
	for (ndepth = 0, noffset = fdt_next_node(fit, image_noffset, &ndepth);
	     (noffset >= 0) && (ndepth > 0);
	     noffset = fdt_next_node(fit, noffset, &ndepth)) {
		if (ndepth == 1) {
			/* Direct child node of the component image node */
			fit_image_print_verification_data(fit, noffset, p);
		}
	}
}

#endif /* !defined(CONFIG_SPL_BUILD) || defined(CONFIG_FIT_SPL_PRINT) */

/**
 * fit_get_desc - get node description property
 * @fit: pointer to the FIT format image header
 * @noffset: node offset
 * @desc: double pointer to the char, will hold pointer to the description
 *
 * fit_get_desc() reads description property from a given node, if
 * description is found pointer to it is returned in third call argument.
 *
 * returns:
 *     0, on success
 *     -1, on failure
 */
int fit_get_desc(const void *fit, int noffset, char **desc)
{
	int len;

	*desc = (char *)fdt_getprop(fit, noffset, FIT_DESC_PROP, &len);
	if (*desc == NULL) {
		fit_get_debug(fit, noffset, FIT_DESC_PROP, len);
		return -1;
	}

	return 0;
}

/**
 * fit_get_timestamp - get node timestamp property
 * @fit: pointer to the FIT format image header
 * @noffset: node offset
 * @timestamp: pointer to the time_t, will hold read timestamp
 *
 * fit_get_timestamp() reads timestamp property from given node, if timestamp
 * is found and has a correct size its value is returned in third call
 * argument.
 *
 * returns:
 *     0, on success
 *     -1, on property read failure
 *     -2, on wrong timestamp size
 */
int fit_get_timestamp(const void *fit, int noffset, time_t *timestamp)
{
	int len;
	const void *data;

	data = fdt_getprop(fit, noffset, FIT_TIMESTAMP_PROP, &len);
	if (data == NULL) {
		fit_get_debug(fit, noffset, FIT_TIMESTAMP_PROP, len);
		return -1;
	}
	if (len != sizeof(uint32_t)) {
		debug("FIT timestamp with incorrect size of (%u)\n", len);
		return -2;
	}

	*timestamp = uimage_to_cpu(*((uint32_t *)data));
	return 0;
}

/**
 * fit_image_get_node - get node offset for component image of a given unit name
 * @fit: pointer to the FIT format image header
 * @image_uname: component image node unit name
 *
 * fit_image_get_node() finds a component image (within the '/images'
 * node) of a provided unit name. If image is found its node offset is
 * returned to the caller.
 *
 * returns:
 *     image node offset when found (>=0)
 *     negative number on failure (FDT_ERR_* code)
 */
int fit_image_get_node(const void *fit, const char *image_uname)
{
	int noffset, images_noffset;

	images_noffset = fdt_path_offset(fit, FIT_IMAGES_PATH);
	if (images_noffset < 0) {
		debug("Can't find images parent node '%s' (%s)\n",
		      FIT_IMAGES_PATH, fdt_strerror(images_noffset));
		return images_noffset;
	}

	noffset = fdt_subnode_offset(fit, images_noffset, image_uname);
	if (noffset < 0) {
		debug("Can't get node offset for image unit name: '%s' (%s)\n",
		      image_uname, fdt_strerror(noffset));
	}

	return noffset;
}

/**
 * fit_image_get_os - get os id for a given component image node
 * @fit: pointer to the FIT format image header
 * @noffset: component image node offset
 * @os: pointer to the uint8_t, will hold os numeric id
 *
 * fit_image_get_os() finds os property in a given component image node.
 * If the property is found, its (string) value is translated to the numeric
 * id which is returned to the caller.
 *
 * returns:
 *     0, on success
 *     -1, on failure
 */
int fit_image_get_os(const void *fit, int noffset, uint8_t *os)
{
	int len;
	const void *data;

	/* Get OS name from property data */
	data = fdt_getprop(fit, noffset, FIT_OS_PROP, &len);
	if (data == NULL) {
		fit_get_debug(fit, noffset, FIT_OS_PROP, len);
		*os = -1;
		return -1;
	}

	/* Translate OS name to id */
	*os = genimg_get_os_id(data);
	return 0;
}

/**
 * fit_image_get_arch - get arch id for a given component image node
 * @fit: pointer to the FIT format image header
 * @noffset: component image node offset
 * @arch: pointer to the uint8_t, will hold arch numeric id
 *
 * fit_image_get_arch() finds arch property in a given component image node.
 * If the property is found, its (string) value is translated to the numeric
 * id which is returned to the caller.
 *
 * returns:
 *     0, on success
 *     -1, on failure
 */
int fit_image_get_arch(const void *fit, int noffset, uint8_t *arch)
{
	int len;
	const void *data;

	/* Get architecture name from property data */
	data = fdt_getprop(fit, noffset, FIT_ARCH_PROP, &len);
	if (data == NULL) {
		fit_get_debug(fit, noffset, FIT_ARCH_PROP, len);
		*arch = -1;
		return -1;
	}

	/* Translate architecture name to id */
	*arch = genimg_get_arch_id(data);
	return 0;
}

/**
 * fit_image_get_type - get type id for a given component image node
 * @fit: pointer to the FIT format image header
 * @noffset: component image node offset
 * @type: pointer to the uint8_t, will hold type numeric id
 *
 * fit_image_get_type() finds type property in a given component image node.
 * If the property is found, its (string) value is translated to the numeric
 * id which is returned to the caller.
 *
 * returns:
 *     0, on success
 *     -1, on failure
 */
int fit_image_get_type(const void *fit, int noffset, uint8_t *type)
{
	int len;
	const void *data;

	/* Get image type name from property data */
	data = fdt_getprop(fit, noffset, FIT_TYPE_PROP, &len);
	if (data == NULL) {
		fit_get_debug(fit, noffset, FIT_TYPE_PROP, len);
		*type = -1;
		return -1;
	}

	/* Translate image type name to id */
	*type = genimg_get_type_id(data);
	return 0;
}

/**
 * fit_image_get_comp - get comp id for a given component image node
 * @fit: pointer to the FIT format image header
 * @noffset: component image node offset
 * @comp: pointer to the uint8_t, will hold comp numeric id
 *
 * fit_image_get_comp() finds comp property in a given component image node.
 * If the property is found, its (string) value is translated to the numeric
 * id which is returned to the caller.
 *
 * returns:
 *     0, on success
 *     -1, on failure
 */
int fit_image_get_comp(const void *fit, int noffset, uint8_t *comp)
{
	int len;
	const void *data;

	/* Get compression name from property data */
	data = fdt_getprop(fit, noffset, FIT_COMP_PROP, &len);
	if (data == NULL) {
		fit_get_debug(fit, noffset, FIT_COMP_PROP, len);
		*comp = -1;
		return -1;
	}

	/* Translate compression name to id */
	*comp = genimg_get_comp_id(data);
	return 0;
}

static int fit_image_get_address(const void *fit, int noffset, char *name,
			  ulong *load)
{
	int len, cell_len;
	const fdt32_t *cell;
	uint64_t load64 = 0;

	cell = fdt_getprop(fit, noffset, name, &len);
	if (cell == NULL) {
		fit_get_debug(fit, noffset, name, len);
		return -1;
	}

	if (len > sizeof(ulong)) {
		printf("Unsupported %s address size\n", name);
		return -1;
	}

	cell_len = len >> 2;
	/* Use load64 to avoid compiling warning for 32-bit target */
	while (cell_len--) {
		load64 = (load64 << 32) | uimage_to_cpu(*cell);
		cell++;
	}
	*load = (ulong)load64;

	return 0;
}
/**
 * fit_image_get_load() - get load addr property for given component image node
 * @fit: pointer to the FIT format image header
 * @noffset: component image node offset
 * @load: pointer to the uint32_t, will hold load address
 *
 * fit_image_get_load() finds load address property in a given component
 * image node. If the property is found, its value is returned to the caller.
 *
 * returns:
 *     0, on success
 *     -1, on failure
 */
int fit_image_get_load(const void *fit, int noffset, ulong *load)
{
	return fit_image_get_address(fit, noffset, FIT_LOAD_PROP, load);
}

/**
 * fit_image_get_entry() - get entry point address property
 * @fit: pointer to the FIT format image header
 * @noffset: component image node offset
 * @entry: pointer to the uint32_t, will hold entry point address
 *
 * This gets the entry point address property for a given component image
 * node.
 *
 * fit_image_get_entry() finds entry point address property in a given
 * component image node.  If the property is found, its value is returned
 * to the caller.
 *
 * returns:
 *     0, on success
 *     -1, on failure
 */
int fit_image_get_entry(const void *fit, int noffset, ulong *entry)
{
	return fit_image_get_address(fit, noffset, FIT_ENTRY_PROP, entry);
}

/**
 * fit_image_get_data - get data property and its size for a given component image node
 * @fit: pointer to the FIT format image header
 * @noffset: component image node offset
 * @data: double pointer to void, will hold data property's data address
 * @size: pointer to size_t, will hold data property's data size
 *
 * fit_image_get_data() finds data property in a given component image node.
 * If the property is found its data start address and size are returned to
 * the caller.
 *
 * returns:
 *     0, on success
 *     -1, on failure
 */
int fit_image_get_data(const void *fit, int noffset,
		const void **data, size_t *size)
{
	int len;

	*data = fdt_getprop(fit, noffset, FIT_DATA_PROP, &len);
	if (*data == NULL) {
		fit_get_debug(fit, noffset, FIT_DATA_PROP, len);
		*size = 0;
		return -1;
	}

	*size = len;
	return 0;
}

/**
 * fit_image_hash_get_algo - get hash algorithm name
 * @fit: pointer to the FIT format image header
 * @noffset: hash node offset
 * @algo: double pointer to char, will hold pointer to the algorithm name
 *
 * fit_image_hash_get_algo() finds hash algorithm property in a given hash node.
 * If the property is found its data start address is returned to the caller.
 *
 * returns:
 *     0, on success
 *     -1, on failure
 */
int fit_image_hash_get_algo(const void *fit, int noffset, char **algo)
{
	int len;

	*algo = (char *)fdt_getprop(fit, noffset, FIT_ALGO_PROP, &len);
	if (*algo == NULL) {
		fit_get_debug(fit, noffset, FIT_ALGO_PROP, len);
		return -1;
	}

	return 0;
}

/**
 * fit_image_hash_get_value - get hash value and length
 * @fit: pointer to the FIT format image header
 * @noffset: hash node offset
 * @value: double pointer to uint8_t, will hold address of a hash value data
 * @value_len: pointer to an int, will hold hash data length
 *
 * fit_image_hash_get_value() finds hash value property in a given hash node.
 * If the property is found its data start address and size are returned to
 * the caller.
 *
 * returns:
 *     0, on success
 *     -1, on failure
 */
int fit_image_hash_get_value(const void *fit, int noffset, uint8_t **value,
				int *value_len)
{
	int len;

	*value = (uint8_t *)fdt_getprop(fit, noffset, FIT_VALUE_PROP, &len);
	if (*value == NULL) {
		fit_get_debug(fit, noffset, FIT_VALUE_PROP, len);
		*value_len = 0;
		return -1;
	}

	*value_len = len;
	return 0;
}

/**
 * fit_image_hash_get_ignore - get hash ignore flag
 * @fit: pointer to the FIT format image header
 * @noffset: hash node offset
 * @ignore: pointer to an int, will hold hash ignore flag
 *
 * fit_image_hash_get_ignore() finds hash ignore property in a given hash node.
 * If the property is found and non-zero, the hash algorithm is not verified by
 * u-boot automatically.
 *
 * returns:
 *     0, on ignore not found
 *     value, on ignore found
 */
static int fit_image_hash_get_ignore(const void *fit, int noffset, int *ignore)
{
	int len;
	int *value;

	value = (int *)fdt_getprop(fit, noffset, FIT_IGNORE_PROP, &len);
	if (value == NULL || len != sizeof(int))
		*ignore = 0;
	else
		*ignore = *value;

	return 0;
}

ulong fit_get_end(const void *fit)
{
	return map_to_sysmem((void *)(fit + fdt_totalsize(fit)));
}

/**
 * fit_set_timestamp - set node timestamp property
 * @fit: pointer to the FIT format image header
 * @noffset: node offset
 * @timestamp: timestamp value to be set
 *
 * fit_set_timestamp() attempts to set timestamp property in the requested
 * node and returns operation status to the caller.
 *
 * returns:
 *     0, on success
 *     -ENOSPC if no space in device tree, -1 for other error
 */
int fit_set_timestamp(void *fit, int noffset, time_t timestamp)
{
	uint32_t t;
	int ret;

	t = cpu_to_uimage(timestamp);
	ret = fdt_setprop(fit, noffset, FIT_TIMESTAMP_PROP, &t,
				sizeof(uint32_t));
	if (ret) {
		debug("Can't set '%s' property for '%s' node (%s)\n",
		      FIT_TIMESTAMP_PROP, fit_get_name(fit, noffset, NULL),
		      fdt_strerror(ret));
		return ret == -FDT_ERR_NOSPACE ? -ENOSPC : -1;
	}

	return 0;
}

/**
 * calculate_hash - calculate and return hash for provided input data
 * @data: pointer to the input data
 * @data_len: data length
 * @algo: requested hash algorithm
 * @value: pointer to the char, will hold hash value data (caller must
 * allocate enough free space)
 * value_len: length of the calculated hash
 *
 * calculate_hash() computes input data hash according to the requested
 * algorithm.
 * Resulting hash value is placed in caller provided 'value' buffer, length
 * of the calculated hash is returned via value_len pointer argument.
 *
 * returns:
 *     0, on success
 *    -1, when algo is unsupported
 */
int calculate_hash(const void *data, int data_len, const char *algo,
			uint8_t *value, int *value_len)
{
	if (IMAGE_ENABLE_CRC32 && strcmp(algo, "crc32") == 0) {
		*((uint32_t *)value) = crc32_wd(0, data, data_len,
							CHUNKSZ_CRC32);
		*((uint32_t *)value) = cpu_to_uimage(*((uint32_t *)value));
		*value_len = 4;
	} else if (IMAGE_ENABLE_SHA1 && strcmp(algo, "sha1") == 0) {
		sha1_csum_wd((unsigned char *)data, data_len,
			     (unsigned char *)value, CHUNKSZ_SHA1);
		*value_len = 20;
	} else if (IMAGE_ENABLE_SHA256 && strcmp(algo, "sha256") == 0) {
		sha256_csum_wd((unsigned char *)data, data_len,
			       (unsigned char *)value, CHUNKSZ_SHA256);
		*value_len = SHA256_SUM_LEN;
	} else if (IMAGE_ENABLE_MD5 && strcmp(algo, "md5") == 0) {
		md5_wd((unsigned char *)data, data_len, value, CHUNKSZ_MD5);
		*value_len = 16;
	} else {
		debug("Unsupported hash alogrithm\n");
		return -1;
	}
	return 0;
}

static int fit_image_check_hash(const void *fit, int noffset, const void *data,
				size_t size, char **err_msgp)
{
	uint8_t value[FIT_MAX_HASH_LEN];
	int value_len;
	char *algo;
	uint8_t *fit_value;
	int fit_value_len;
	int ignore;

	*err_msgp = NULL;

	if (fit_image_hash_get_algo(fit, noffset, &algo)) {
		*err_msgp = "Can't get hash algo property";
		return -1;
	}
	printf("%s", algo);

	if (IMAGE_ENABLE_IGNORE) {
		fit_image_hash_get_ignore(fit, noffset, &ignore);
		if (ignore) {
			printf("-skipped ");
			return 0;
		}
	}

	if (fit_image_hash_get_value(fit, noffset, &fit_value,
				     &fit_value_len)) {
		*err_msgp = "Can't get hash value property";
		return -1;
	}

	if (calculate_hash(data, size, algo, value, &value_len)) {
		*err_msgp = "Unsupported hash algorithm";
		return -1;
	}

	if (value_len != fit_value_len) {
		*err_msgp = "Bad hash value len";
		return -1;
	} else if (memcmp(value, fit_value, value_len) != 0) {
		*err_msgp = "Bad hash value";
		return -1;
	}

	return 0;
}

/**
 * fit_image_verify - verify data integrity
 * @fit: pointer to the FIT format image header
 * @image_noffset: component image node offset
 *
 * fit_image_verify() goes over component image hash nodes,
 * re-calculates each data hash and compares with the value stored in hash
 * node.
 *
 * returns:
 *     1, if all hashes are valid
 *     0, otherwise (or on error)
 */
int fit_image_verify(const void *fit, int image_noffset)
{
	const void	*data;
	size_t		size;
	int		noffset = 0;
	char		*err_msg = "";
	int verify_all = 1;
	int ret;

	/* Get image data and data length */
	if (fit_image_get_data(fit, image_noffset, &data, &size)) {
		err_msg = "Can't get image data/size";
		goto error;
	}

	/* Verify all required signatures */
	if (IMAGE_ENABLE_VERIFY &&
	    fit_image_verify_required_sigs(fit, image_noffset, data, size,
					   gd_fdt_blob(), &verify_all)) {
		err_msg = "Unable to verify required signature";
		goto error;
	}

	/* Process all hash subnodes of the component image node */
	fdt_for_each_subnode(fit, noffset, image_noffset) {
		const char *name = fit_get_name(fit, noffset, NULL);

		/*
		 * Check subnode name, must be equal to "hash".
		 * Multiple hash nodes require unique unit node
		 * names, e.g. hash@1, hash@2, etc.
		 */
		if (!strncmp(name, FIT_HASH_NODENAME,
			     strlen(FIT_HASH_NODENAME))) {
			if (fit_image_check_hash(fit, noffset, data, size,
						 &err_msg))
				goto error;
			puts("+ ");
		} else if (IMAGE_ENABLE_VERIFY && verify_all &&
				!strncmp(name, FIT_SIG_NODENAME,
					strlen(FIT_SIG_NODENAME))) {
			ret = fit_image_check_sig(fit, noffset, data,
							size, -1, &err_msg);

			/*
			 * Show an indication on failure, but do not return
			 * an error. Only keys marked 'required' can cause
			 * an image validation failure. See the call to
			 * fit_image_verify_required_sigs() above.
			 */
			if (ret)
				puts("- ");
			else
				puts("+ ");
		}
	}

	if (noffset == -FDT_ERR_TRUNCATED || noffset == -FDT_ERR_BADSTRUCTURE) {
		err_msg = "Corrupted or truncated tree";
		goto error;
	}

	return 1;

error:
	printf(" error!\n%s for '%s' hash node in '%s' image node\n",
	       err_msg, fit_get_name(fit, noffset, NULL),
	       fit_get_name(fit, image_noffset, NULL));
	return 0;
}

/**
 * fit_all_image_verify - verify data integrity for all images
 * @fit: pointer to the FIT format image header
 *
 * fit_all_image_verify() goes over all images in the FIT and
 * for every images checks if all it's hashes are valid.
 *
 * returns:
 *     1, if all hashes of all images are valid
 *     0, otherwise (or on error)
 */
int fit_all_image_verify(const void *fit)
{
	int images_noffset;
	int noffset;
	int ndepth;
	int count;

	/* Find images parent node offset */
	images_noffset = fdt_path_offset(fit, FIT_IMAGES_PATH);
	if (images_noffset < 0) {
		printf("Can't find images parent node '%s' (%s)\n",
		       FIT_IMAGES_PATH, fdt_strerror(images_noffset));
		return 0;
	}

	/* Process all image subnodes, check hashes for each */
	printf("## Checking hash(es) for FIT Image at %08lx ...\n",
	       (ulong)fit);
	for (ndepth = 0, count = 0,
	     noffset = fdt_next_node(fit, images_noffset, &ndepth);
			(noffset >= 0) && (ndepth > 0);
			noffset = fdt_next_node(fit, noffset, &ndepth)) {
		if (ndepth == 1) {
			/*
			 * Direct child node of the images parent node,
			 * i.e. component image node.
			 */
			printf("   Hash(es) for Image %u (%s): ", count,
			       fit_get_name(fit, noffset, NULL));
			count++;

			if (!fit_image_verify(fit, noffset))
				return 0;
			printf("\n");
		}
	}
	return 1;
}

/**
 * fit_image_check_os - check whether image node is of a given os type
 * @fit: pointer to the FIT format image header
 * @noffset: component image node offset
 * @os: requested image os
 *
 * fit_image_check_os() reads image os property and compares its numeric
 * id with the requested os. Comparison result is returned to the caller.
 *
 * returns:
 *     1 if image is of given os type
 *     0 otherwise (or on error)
 */
int fit_image_check_os(const void *fit, int noffset, uint8_t os)
{
	uint8_t image_os;

	if (fit_image_get_os(fit, noffset, &image_os))
		return 0;
	return (os == image_os);
}

/**
 * fit_image_check_arch - check whether image node is of a given arch
 * @fit: pointer to the FIT format image header
 * @noffset: component image node offset
 * @arch: requested imagearch
 *
 * fit_image_check_arch() reads image arch property and compares its numeric
 * id with the requested arch. Comparison result is returned to the caller.
 *
 * returns:
 *     1 if image is of given arch
 *     0 otherwise (or on error)
 */
int fit_image_check_arch(const void *fit, int noffset, uint8_t arch)
{
	uint8_t image_arch;

	if (fit_image_get_arch(fit, noffset, &image_arch))
		return 0;
	return (arch == image_arch) ||
		(arch == IH_ARCH_I386 && image_arch == IH_ARCH_X86_64);
}

/**
 * fit_image_check_type - check whether image node is of a given type
 * @fit: pointer to the FIT format image header
 * @noffset: component image node offset
 * @type: requested image type
 *
 * fit_image_check_type() reads image type property and compares its numeric
 * id with the requested type. Comparison result is returned to the caller.
 *
 * returns:
 *     1 if image is of given type
 *     0 otherwise (or on error)
 */
int fit_image_check_type(const void *fit, int noffset, uint8_t type)
{
	uint8_t image_type;

	if (fit_image_get_type(fit, noffset, &image_type))
		return 0;
	return (type == image_type);
}

/**
 * fit_image_check_comp - check whether image node uses given compression
 * @fit: pointer to the FIT format image header
 * @noffset: component image node offset
 * @comp: requested image compression type
 *
 * fit_image_check_comp() reads image compression property and compares its
 * numeric id with the requested compression type. Comparison result is
 * returned to the caller.
 *
 * returns:
 *     1 if image uses requested compression
 *     0 otherwise (or on error)
 */
int fit_image_check_comp(const void *fit, int noffset, uint8_t comp)
{
	uint8_t image_comp;

	if (fit_image_get_comp(fit, noffset, &image_comp))
		return 0;
	return (comp == image_comp);
}

/**
 * fit_check_format - sanity check FIT image format
 * @fit: pointer to the FIT format image header
 *
 * fit_check_format() runs a basic sanity FIT image verification.
 * Routine checks for mandatory properties, nodes, etc.
 *
 * returns:
 *     1, on success
 *     0, on failure
 */
int fit_check_format(const void *fit)
{
	/* mandatory / node 'description' property */
	if (fdt_getprop(fit, 0, FIT_DESC_PROP, NULL) == NULL) {
		debug("Wrong FIT format: no description\n");
		return 0;
	}

	if (IMAGE_ENABLE_TIMESTAMP) {
		/* mandatory / node 'timestamp' property */
		if (fdt_getprop(fit, 0, FIT_TIMESTAMP_PROP, NULL) == NULL) {
			debug("Wrong FIT format: no timestamp\n");
			return 0;
		}
	}

	/* mandatory subimages parent '/images' node */
	if (fdt_path_offset(fit, FIT_IMAGES_PATH) < 0) {
		debug("Wrong FIT format: no images parent node\n");
		return 0;
	}

	return 1;
}


/**
 * fit_conf_find_compat
 * @fit: pointer to the FIT format image header
 * @fdt: pointer to the device tree to compare against
 *
 * fit_conf_find_compat() attempts to find the configuration whose fdt is the
 * most compatible with the passed in device tree.
 *
 * Example:
 *
 * / o image-tree
 *   |-o images
 *   | |-o fdt@1
 *   | |-o fdt@2
 *   |
 *   |-o configurations
 *     |-o config@1
 *     | |-fdt = fdt@1
 *     |
 *     |-o config@2
 *       |-fdt = fdt@2
 *
 * / o U-Boot fdt
 *   |-compatible = "foo,bar", "bim,bam"
 *
 * / o kernel fdt1
 *   |-compatible = "foo,bar",
 *
 * / o kernel fdt2
 *   |-compatible = "bim,bam", "baz,biz"
 *
 * Configuration 1 would be picked because the first string in U-Boot's
 * compatible list, "foo,bar", matches a compatible string in the root of fdt1.
 * "bim,bam" in fdt2 matches the second string which isn't as good as fdt1.
 *
 * returns:
 *     offset to the configuration to use if one was found
 *     -1 otherwise
 */
int fit_conf_find_compat(const void *fit, const void *fdt)
{
	int ndepth = 0;
	int noffset, confs_noffset, images_noffset;
	const void *fdt_compat;
	int fdt_compat_len;
	int best_match_offset = 0;
	int best_match_pos = 0;

	confs_noffset = fdt_path_offset(fit, FIT_CONFS_PATH);
	images_noffset = fdt_path_offset(fit, FIT_IMAGES_PATH);
	if (confs_noffset < 0 || images_noffset < 0) {
		debug("Can't find configurations or images nodes.\n");
		return -1;
	}

	fdt_compat = fdt_getprop(fdt, 0, "compatible", &fdt_compat_len);
	if (!fdt_compat) {
		debug("Fdt for comparison has no \"compatible\" property.\n");
		return -1;
	}

	/*
	 * Loop over the configurations in the FIT image.
	 */
	for (noffset = fdt_next_node(fit, confs_noffset, &ndepth);
			(noffset >= 0) && (ndepth > 0);
			noffset = fdt_next_node(fit, noffset, &ndepth)) {
		const void *kfdt;
		const char *kfdt_name;
		int kfdt_noffset;
		const char *cur_fdt_compat;
		int len;
		size_t size;
		int i;

		if (ndepth > 1)
			continue;

		kfdt_name = fdt_getprop(fit, noffset, "fdt", &len);
		if (!kfdt_name) {
			debug("No fdt property found.\n");
			continue;
		}
		kfdt_noffset = fdt_subnode_offset(fit, images_noffset,
						  kfdt_name);
		if (kfdt_noffset < 0) {
			debug("No image node named \"%s\" found.\n",
			      kfdt_name);
			continue;
		}
		/*
		 * Get a pointer to this configuration's fdt.
		 */
		if (fit_image_get_data(fit, kfdt_noffset, &kfdt, &size)) {
			debug("Failed to get fdt \"%s\".\n", kfdt_name);
			continue;
		}

		len = fdt_compat_len;
		cur_fdt_compat = fdt_compat;
		/*
		 * Look for a match for each U-Boot compatibility string in
		 * turn in this configuration's fdt.
		 */
		for (i = 0; len > 0 &&
		     (!best_match_offset || best_match_pos > i); i++) {
			int cur_len = strlen(cur_fdt_compat) + 1;

			if (!fdt_node_check_compatible(kfdt, 0,
						       cur_fdt_compat)) {
				best_match_offset = noffset;
				best_match_pos = i;
				break;
			}
			len -= cur_len;
			cur_fdt_compat += cur_len;
		}
	}
	if (!best_match_offset) {
		debug("No match found.\n");
		return -1;
	}

	return best_match_offset;
}

/**
 * fit_conf_get_node - get node offset for configuration of a given unit name
 * @fit: pointer to the FIT format image header
 * @conf_uname: configuration node unit name
 *
 * fit_conf_get_node() finds a configuration (within the '/configurations'
 * parent node) of a provided unit name. If configuration is found its node
 * offset is returned to the caller.
 *
 * When NULL is provided in second argument fit_conf_get_node() will search
 * for a default configuration node instead. Default configuration node unit
 * name is retrieved from FIT_DEFAULT_PROP property of the '/configurations'
 * node.
 *
 * returns:
 *     configuration node offset when found (>=0)
 *     negative number on failure (FDT_ERR_* code)
 */
int fit_conf_get_node(const void *fit, const char *conf_uname)
{
	int noffset, confs_noffset;
	int len;

	confs_noffset = fdt_path_offset(fit, FIT_CONFS_PATH);
	if (confs_noffset < 0) {
		debug("Can't find configurations parent node '%s' (%s)\n",
		      FIT_CONFS_PATH, fdt_strerror(confs_noffset));
		return confs_noffset;
	}

	if (conf_uname == NULL) {
		/* get configuration unit name from the default property */
		debug("No configuration specified, trying default...\n");
		conf_uname = (char *)fdt_getprop(fit, confs_noffset,
						 FIT_DEFAULT_PROP, &len);
		if (conf_uname == NULL) {
			fit_get_debug(fit, confs_noffset, FIT_DEFAULT_PROP,
				      len);
			return len;
		}
		debug("Found default configuration: '%s'\n", conf_uname);
	}

	noffset = fdt_subnode_offset(fit, confs_noffset, conf_uname);
	if (noffset < 0) {
		debug("Can't get node offset for configuration unit name: '%s' (%s)\n",
		      conf_uname, fdt_strerror(noffset));
	}

	return noffset;
}

int fit_conf_get_prop_node(const void *fit, int noffset,
		const char *prop_name)
{
	char *uname;
	int len;

	/* get kernel image unit name from configuration kernel property */
	uname = (char *)fdt_getprop(fit, noffset, prop_name, &len);
	if (uname == NULL)
		return len;

	return fit_image_get_node(fit, uname);
}

/**
 * fit_conf_print - prints out the FIT configuration details
 * @fit: pointer to the FIT format image header
 * @noffset: offset of the configuration node
 * @p: pointer to prefix string
 *
 * fit_conf_print() lists all mandatory properties for the processed
 * configuration node.
 *
 * returns:
 *     no returned results
 */
void fit_conf_print(const void *fit, int noffset, const char *p)
{
	char *desc;
	char *uname;
	int ret;
	int loadables_index;

	/* Mandatory properties */
	ret = fit_get_desc(fit, noffset, &desc);
	printf("%s  Description:  ", p);
	if (ret)
		printf("unavailable\n");
	else
		printf("%s\n", desc);

	uname = (char *)fdt_getprop(fit, noffset, FIT_KERNEL_PROP, NULL);
	printf("%s  Kernel:       ", p);
	if (uname == NULL)
		printf("unavailable\n");
	else
		printf("%s\n", uname);

	/* Optional properties */
	uname = (char *)fdt_getprop(fit, noffset, FIT_RAMDISK_PROP, NULL);
	if (uname)
		printf("%s  Init Ramdisk: %s\n", p, uname);

	uname = (char *)fdt_getprop(fit, noffset, FIT_FDT_PROP, NULL);
	if (uname)
		printf("%s  FDT:          %s\n", p, uname);

	uname = (char *)fdt_getprop(fit, noffset, FIT_FPGA_PROP, NULL);
	if (uname)
		printf("%s  FPGA:         %s\n", p, uname);

	/* Print out all of the specified loadables */
	for (loadables_index = 0;
	     fdt_get_string_index(fit, noffset,
			FIT_LOADABLE_PROP,
			loadables_index,
			(const char **)&uname) == 0;
	     loadables_index++)
	{
		if (loadables_index == 0) {
			printf("%s  Loadables:    ", p);
		} else {
			printf("%s                ", p);
		}
		printf("%s\n", uname);
	}
}

static int fit_image_select(const void *fit, int rd_noffset, int verify)
{
#if !defined(USE_HOSTCC) && defined(CONFIG_FIT_IMAGE_POST_PROCESS)
	const void *data;
	size_t size;
	int ret;
#endif

	fit_image_print(fit, rd_noffset, "   ");

	if (verify) {
		puts("   Verifying Hash Integrity ... ");
		if (!fit_image_verify(fit, rd_noffset)) {
			puts("Bad Data Hash\n");
			return -EACCES;
		}
		puts("OK\n");
	}

#if !defined(USE_HOSTCC) && defined(CONFIG_FIT_IMAGE_POST_PROCESS)
	ret = fit_image_get_data(fit, rd_noffset, &data, &size);
	if (ret)
		return ret;

	/* perform any post-processing on the image data */
	board_fit_image_post_process((void **)&data, &size);

	/*
	 * update U-Boot's understanding of the "data" property start address
	 * and size according to the performed post-processing
	 */
	ret = fdt_setprop((void *)fit, rd_noffset, FIT_DATA_PROP, data, size);
	if (ret)
		return ret;
#endif

	return 0;
}

int fit_get_node_from_config(bootm_headers_t *images, const char *prop_name,
			ulong addr)
{
	int cfg_noffset;
	void *fit_hdr;
	int noffset;

	debug("*  %s: using config '%s' from image at 0x%08lx\n",
	      prop_name, images->fit_uname_cfg, addr);

	/* Check whether configuration has this property defined */
	fit_hdr = map_sysmem(addr, 0);
	cfg_noffset = fit_conf_get_node(fit_hdr, images->fit_uname_cfg);
	if (cfg_noffset < 0) {
		debug("*  %s: no such config\n", prop_name);
		return -ENOENT;
	}

	noffset = fit_conf_get_prop_node(fit_hdr, cfg_noffset, prop_name);
	if (noffset < 0) {
		debug("*  %s: no '%s' in config\n", prop_name, prop_name);
		return -ENOLINK;
	}

	return noffset;
}

/**
 * fit_get_image_type_property() - get property name for IH_TYPE_...
 *
 * @return the properly name where we expect to find the image in the
 * config node
 */
static const char *fit_get_image_type_property(int type)
{
	/*
	 * This is sort-of available in the uimage_type[] table in image.c
	 * but we don't have access to the short name, and "fdt" is different
	 * anyway. So let's just keep it here.
	 */
	switch (type) {
	case IH_TYPE_FLATDT:
		return FIT_FDT_PROP;
	case IH_TYPE_KERNEL:
		return FIT_KERNEL_PROP;
	case IH_TYPE_RAMDISK:
		return FIT_RAMDISK_PROP;
	case IH_TYPE_X86_SETUP:
		return FIT_SETUP_PROP;
	case IH_TYPE_LOADABLE:
		return FIT_LOADABLE_PROP;
	case IH_TYPE_FPGA:
		return FIT_FPGA_PROP;
	}

	return "unknown";
}

int fit_image_load(bootm_headers_t *images, ulong addr,
		   const char **fit_unamep, const char **fit_uname_configp,
		   int arch, int image_type, int bootstage_id,
		   enum fit_load_op load_op, ulong *datap, ulong *lenp)
{
	int cfg_noffset, noffset;
	const char *fit_uname;
	const char *fit_uname_config;
	const void *fit;
	const void *buf;
	size_t size;
	int type_ok, os_ok;
	ulong load, data, len;
	uint8_t os;
	const char *prop_name;
	int ret;

	fit = map_sysmem(addr, 0);
	fit_uname = fit_unamep ? *fit_unamep : NULL;
	fit_uname_config = fit_uname_configp ? *fit_uname_configp : NULL;
	prop_name = fit_get_image_type_property(image_type);
	printf("## Loading %s from FIT Image at %08lx ...\n", prop_name, addr);

	bootstage_mark(bootstage_id + BOOTSTAGE_SUB_FORMAT);
	if (!fit_check_format(fit)) {
		printf("Bad FIT %s image format!\n", prop_name);
		bootstage_error(bootstage_id + BOOTSTAGE_SUB_FORMAT);
		return -ENOEXEC;
	}
	bootstage_mark(bootstage_id + BOOTSTAGE_SUB_FORMAT_OK);
	if (fit_uname) {
		/* get FIT component image node offset */
		bootstage_mark(bootstage_id + BOOTSTAGE_SUB_UNIT_NAME);
		noffset = fit_image_get_node(fit, fit_uname);
	} else {
		/*
		 * no image node unit name, try to get config
		 * node first. If config unit node name is NULL
		 * fit_conf_get_node() will try to find default config node
		 */
		bootstage_mark(bootstage_id + BOOTSTAGE_SUB_NO_UNIT_NAME);
		if (IMAGE_ENABLE_BEST_MATCH && !fit_uname_config) {
			cfg_noffset = fit_conf_find_compat(fit, gd_fdt_blob());
		} else {
			cfg_noffset = fit_conf_get_node(fit,
							fit_uname_config);
		}
		if (cfg_noffset < 0) {
			puts("Could not find configuration node\n");
			bootstage_error(bootstage_id +
					BOOTSTAGE_SUB_NO_UNIT_NAME);
			return -ENOENT;
		}
		fit_uname_config = fdt_get_name(fit, cfg_noffset, NULL);
		printf("   Using '%s' configuration\n", fit_uname_config);
		if (image_type == IH_TYPE_KERNEL) {
			/* Remember (and possibly verify) this config */
			images->fit_uname_cfg = fit_uname_config;
			if (IMAGE_ENABLE_VERIFY && images->verify) {
				puts("   Verifying Hash Integrity ... ");
				if (fit_config_verify(fit, cfg_noffset)) {
					puts("Bad Data Hash\n");
					bootstage_error(bootstage_id +
						BOOTSTAGE_SUB_HASH);
					return -EACCES;
				}
				puts("OK\n");
			}
			bootstage_mark(BOOTSTAGE_ID_FIT_CONFIG);
		}

		noffset = fit_conf_get_prop_node(fit, cfg_noffset,
						 prop_name);
		fit_uname = fit_get_name(fit, noffset, NULL);
	}
	if (noffset < 0) {
		puts("Could not find subimage node\n");
		bootstage_error(bootstage_id + BOOTSTAGE_SUB_SUBNODE);
		return -ENOENT;
	}

	printf("   Trying '%s' %s subimage\n", fit_uname, prop_name);

	ret = fit_image_select(fit, noffset, images->verify);
	if (ret) {
		bootstage_error(bootstage_id + BOOTSTAGE_SUB_HASH);
		return ret;
	}

	bootstage_mark(bootstage_id + BOOTSTAGE_SUB_CHECK_ARCH);
#if !defined(USE_HOSTCC) && !defined(CONFIG_SANDBOX)
	if (!fit_image_check_target_arch(fit, noffset)) {
		puts("Unsupported Architecture\n");
		bootstage_error(bootstage_id + BOOTSTAGE_SUB_CHECK_ARCH);
		return -ENOEXEC;
	}
#endif
	if (image_type == IH_TYPE_FLATDT &&
	    !fit_image_check_comp(fit, noffset, IH_COMP_NONE)) {
		puts("FDT image is compressed");
		return -EPROTONOSUPPORT;
	}

	bootstage_mark(bootstage_id + BOOTSTAGE_SUB_CHECK_ALL);
	type_ok = fit_image_check_type(fit, noffset, image_type) ||
		  fit_image_check_type(fit, noffset, IH_TYPE_FIRMWARE) ||
		  (image_type == IH_TYPE_KERNEL &&
		   fit_image_check_type(fit, noffset, IH_TYPE_KERNEL_NOLOAD));

	os_ok = image_type == IH_TYPE_FLATDT || IH_TYPE_FPGA ||
		fit_image_check_os(fit, noffset, IH_OS_LINUX) ||
		fit_image_check_os(fit, noffset, IH_OS_U_BOOT) ||
		fit_image_check_os(fit, noffset, IH_OS_OPENRTOS);

	/*
	 * If either of the checks fail, we should report an error, but
	 * if the image type is coming from the "loadables" field, we
	 * don't care what it is
	 */
	if ((!type_ok || !os_ok) && image_type != IH_TYPE_LOADABLE) {
		fit_image_get_os(fit, noffset, &os);
		printf("No %s %s %s Image\n",
		       genimg_get_os_name(os),
		       genimg_get_arch_name(arch),
		       genimg_get_type_name(image_type));
		bootstage_error(bootstage_id + BOOTSTAGE_SUB_CHECK_ALL);
		return -EIO;
	}

	bootstage_mark(bootstage_id + BOOTSTAGE_SUB_CHECK_ALL_OK);

	/* get image data address and length */
	if (fit_image_get_data(fit, noffset, &buf, &size)) {
		printf("Could not find %s subimage data!\n", prop_name);
		bootstage_error(bootstage_id + BOOTSTAGE_SUB_GET_DATA);
		return -ENOENT;
	}
	len = (ulong)size;

	/* verify that image data is a proper FDT blob */
	if (image_type == IH_TYPE_FLATDT && fdt_check_header(buf)) {
		puts("Subimage data is not a FDT");
		return -ENOEXEC;
	}

	bootstage_mark(bootstage_id + BOOTSTAGE_SUB_GET_DATA_OK);

	/*
	 * Work-around for eldk-4.2 which gives this warning if we try to
	 * cast in the unmap_sysmem() call:
	 * warning: initialization discards qualifiers from pointer target type
	 */
	{
		void *vbuf = (void *)buf;

		data = map_to_sysmem(vbuf);
	}

	if (load_op == FIT_LOAD_IGNORED) {
		/* Don't load */
	} else if (fit_image_get_load(fit, noffset, &load)) {
		if (load_op == FIT_LOAD_REQUIRED) {
			printf("Can't get %s subimage load address!\n",
			       prop_name);
			bootstage_error(bootstage_id + BOOTSTAGE_SUB_LOAD);
			return -EBADF;
		}
	} else if (load_op != FIT_LOAD_OPTIONAL_NON_ZERO || load) {
		ulong image_start, image_end;
		ulong load_end;
		void *dst;

		/*
		 * move image data to the load address,
		 * make sure we don't overwrite initial image
		 */
		image_start = addr;
		image_end = addr + fit_get_size(fit);

		load_end = load + len;
		if (image_type != IH_TYPE_KERNEL &&
		    load < image_end && load_end > image_start) {
			printf("Error: %s overwritten\n", prop_name);
			return -EXDEV;
		}

		printf("   Loading %s from 0x%08lx to 0x%08lx\n",
		       prop_name, data, load);

		dst = map_sysmem(load, len);
		memmove(dst, buf, len);
		data = load;
	}
	bootstage_mark(bootstage_id + BOOTSTAGE_SUB_LOAD);

	*datap = data;
	*lenp = len;
	if (fit_unamep)
		*fit_unamep = (char *)fit_uname;
	if (fit_uname_configp)
		*fit_uname_configp = (char *)fit_uname_config;

	return noffset;
}

int boot_get_setup_fit(bootm_headers_t *images, uint8_t arch,
			ulong *setup_start, ulong *setup_len)
{
	int noffset;
	ulong addr;
	ulong len;
	int ret;

	addr = map_to_sysmem(images->fit_hdr_os);
	noffset = fit_get_node_from_config(images, FIT_SETUP_PROP, addr);
	if (noffset < 0)
		return noffset;

	ret = fit_image_load(images, addr, NULL, NULL, arch,
			     IH_TYPE_X86_SETUP, BOOTSTAGE_ID_FIT_SETUP_START,
			     FIT_LOAD_REQUIRED, setup_start, &len);

	return ret;
}