summaryrefslogtreecommitdiff
path: root/arch/powerpc/cpu/mpc85xx/start.S
blob: 9e04257d2ca00af07b923e4f8be4b64e11e423fe (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
/*
 * Copyright 2004, 2007-2012 Freescale Semiconductor, Inc.
 * Copyright (C) 2003  Motorola,Inc.
 *
 * 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
 */

/* U-Boot Startup Code for Motorola 85xx PowerPC based Embedded Boards
 *
 * The processor starts at 0xfffffffc and the code is first executed in the
 * last 4K page(0xfffff000-0xffffffff) in flash/rom.
 *
 */

#include <asm-offsets.h>
#include <config.h>
#include <mpc85xx.h>
#include <version.h>

#define _LINUX_CONFIG_H 1	/* avoid reading Linux autoconf.h file	*/

#include <ppc_asm.tmpl>
#include <ppc_defs.h>

#include <asm/cache.h>
#include <asm/mmu.h>

#undef	MSR_KERNEL
#define MSR_KERNEL ( MSR_ME )	/* Machine Check */

/*
 * Set up GOT: Global Offset Table
 *
 * Use r12 to access the GOT
 */
	START_GOT
	GOT_ENTRY(_GOT2_TABLE_)
	GOT_ENTRY(_FIXUP_TABLE_)

#ifndef CONFIG_NAND_SPL
	GOT_ENTRY(_start)
	GOT_ENTRY(_start_of_vectors)
	GOT_ENTRY(_end_of_vectors)
	GOT_ENTRY(transfer_to_handler)
#endif

	GOT_ENTRY(__init_end)
	GOT_ENTRY(__bss_end__)
	GOT_ENTRY(__bss_start)
	END_GOT

/*
 * e500 Startup -- after reset only the last 4KB of the effective
 * address space is mapped in the MMU L2 TLB1 Entry0. The .bootpg
 * section is located at THIS LAST page and basically does three
 * things: clear some registers, set up exception tables and
 * add more TLB entries for 'larger spaces'(e.g. the boot rom) to
 * continue the boot procedure.

 * Once the boot rom is mapped by TLB entries we can proceed
 * with normal startup.
 *
 */

	.section .bootpg,"ax"
	.globl _start_e500

_start_e500:
/* Enable debug exception */
	li	r1,MSR_DE
	mtmsr 	r1

#ifdef CONFIG_SYS_FSL_ERRATUM_A004510
	mfspr	r3,SPRN_SVR
	rlwinm	r3,r3,0,0xff
	li	r4,CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV
	cmpw	r3,r4
	beq	1f

#ifdef CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV2
	li	r4,CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV2
	cmpw	r3,r4
	beq	1f
#endif

	/* Not a supported revision affected by erratum */
	li	r27,0
	b	2f

1:	li	r27,1	/* Remember for later that we have the erratum */
	/* Erratum says set bits 55:60 to 001001 */
	msync
	isync
	mfspr	r3,976
	li	r4,0x48
	rlwimi	r3,r4,0,0x1f8
	mtspr	976,r3
	isync
2:
#endif

#if defined(CONFIG_SECURE_BOOT) && defined(CONFIG_E500MC)
	/* ISBC uses L2 as stack.
	 * Disable L2 cache here so that u-boot can enable it later
	 * as part of it's normal flow
	*/

	/* Check if L2 is enabled */
	mfspr	r3, SPRN_L2CSR0
	lis	r2, L2CSR0_L2E@h
	ori	r2, r2, L2CSR0_L2E@l
	and.	r4, r3, r2
	beq	l2_disabled

	mfspr r3, SPRN_L2CSR0
	/* Flush L2 cache */
	lis     r2,(L2CSR0_L2FL)@h
	ori     r2, r2, (L2CSR0_L2FL)@l
	or      r3, r2, r3
	sync
	isync
	mtspr   SPRN_L2CSR0,r3
	isync
1:
	mfspr r3, SPRN_L2CSR0
	and. r1, r3, r2
	bne 1b

	mfspr r3, SPRN_L2CSR0
	lis r2, L2CSR0_L2E@h
	ori r2, r2, L2CSR0_L2E@l
	andc r4, r3, r2
	sync
	isync
	mtspr SPRN_L2CSR0,r4
	isync

l2_disabled:
#endif

/* clear registers/arrays not reset by hardware */

	/* L1 */
	li	r0,2
	mtspr	L1CSR0,r0	/* invalidate d-cache */
	mtspr	L1CSR1,r0	/* invalidate i-cache */

	mfspr	r1,DBSR
	mtspr	DBSR,r1		/* Clear all valid bits */

	/*
	 *	Enable L1 Caches early
	 *
	 */

#if defined(CONFIG_E500MC) && defined(CONFIG_SYS_CACHE_STASHING)
	/* set stash id to (coreID) * 2 + 32 + L1 CT (0) */
	li	r2,(32 + 0)
	mtspr	L1CSR2,r2
#endif

	/* Enable/invalidate the I-Cache */
	lis	r2,(L1CSR1_ICFI|L1CSR1_ICLFR)@h
	ori	r2,r2,(L1CSR1_ICFI|L1CSR1_ICLFR)@l
	mtspr	SPRN_L1CSR1,r2
1:
	mfspr	r3,SPRN_L1CSR1
	and.	r1,r3,r2
	bne	1b

	lis	r3,(L1CSR1_CPE|L1CSR1_ICE)@h
	ori	r3,r3,(L1CSR1_CPE|L1CSR1_ICE)@l
	mtspr	SPRN_L1CSR1,r3
	isync
2:
	mfspr	r3,SPRN_L1CSR1
	andi.	r1,r3,L1CSR1_ICE@l
	beq	2b

	/* Enable/invalidate the D-Cache */
	lis	r2,(L1CSR0_DCFI|L1CSR0_DCLFR)@h
	ori	r2,r2,(L1CSR0_DCFI|L1CSR0_DCLFR)@l
	mtspr	SPRN_L1CSR0,r2
1:
	mfspr	r3,SPRN_L1CSR0
	and.	r1,r3,r2
	bne	1b

	lis	r3,(L1CSR0_CPE|L1CSR0_DCE)@h
	ori	r3,r3,(L1CSR0_CPE|L1CSR0_DCE)@l
	mtspr	SPRN_L1CSR0,r3
	isync
2:
	mfspr	r3,SPRN_L1CSR0
	andi.	r1,r3,L1CSR0_DCE@l
	beq	2b

#if defined(CONFIG_SYS_PPC_E500_DEBUG_TLB) && !defined(CONFIG_NAND_SPL)
/*
 * TLB entry for debuggging in AS1
 * Create temporary TLB entry in AS0 to handle debug exception
 * As on debug exception MSR is cleared i.e. Address space is changed
 * to 0. A TLB entry (in AS0) is required to handle debug exception generated
 * in AS1.
 */

	lis     r6,FSL_BOOKE_MAS0(1,
			CONFIG_SYS_PPC_E500_DEBUG_TLB, 0)@h
	ori     r6,r6,FSL_BOOKE_MAS0(1,
			CONFIG_SYS_PPC_E500_DEBUG_TLB, 0)@l

#if !defined(CONFIG_SYS_RAMBOOT) && !defined(CONFIG_SECURE_BOOT)
/*
 * TLB entry is created for IVPR + IVOR15 to map on valid OP code address
 * bacause flash's virtual address maps to 0xff800000 - 0xffffffff.
 * and this window is outside of 4K boot window.
 */
	lis     r7,FSL_BOOKE_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_4M)@h
	ori     r7,r7,FSL_BOOKE_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_4M)@l

	lis     r8,FSL_BOOKE_MAS2(CONFIG_SYS_MONITOR_BASE & 0xffc00000,
							(MAS2_I|MAS2_G))@h
	ori     r8,r8,FSL_BOOKE_MAS2(CONFIG_SYS_MONITOR_BASE & 0xffc00000,
							(MAS2_I|MAS2_G))@l

	/* The 85xx has the default boot window 0xff800000 - 0xffffffff */
	lis     r9,FSL_BOOKE_MAS3(0xffc00000, 0, (MAS3_SX|MAS3_SW|MAS3_SR))@h
	ori     r9,r9,FSL_BOOKE_MAS3(0xffc00000, 0, (MAS3_SX|MAS3_SW|MAS3_SR))@l
#elif !defined(CONFIG_SYS_RAMBOOT) && defined(CONFIG_SECURE_BOOT)
	lis     r7,FSL_BOOKE_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_1M)@h
	ori     r7,r7,FSL_BOOKE_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_1M)@l

	lis     r8,FSL_BOOKE_MAS2(CONFIG_SYS_MONITOR_BASE,(MAS2_I|MAS2_G))@h
	ori     r8,r8,FSL_BOOKE_MAS2(CONFIG_SYS_MONITOR_BASE,(MAS2_I|MAS2_G))@l

	lis     r9,FSL_BOOKE_MAS3(CONFIG_SYS_PBI_FLASH_WINDOW, 0,
						(MAS3_SX|MAS3_SW|MAS3_SR))@h
	ori     r9,r9,FSL_BOOKE_MAS3(CONFIG_SYS_PBI_FLASH_WINDOW, 0,
						(MAS3_SX|MAS3_SW|MAS3_SR))@l
#else
/*
 * TLB entry is created for IVPR + IVOR15 to map on valid OP code address
 * because "nexti" will resize TLB to 4K
 */
	lis     r7,FSL_BOOKE_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_256K)@h
	ori     r7,r7,FSL_BOOKE_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_256K)@l

	lis     r8,FSL_BOOKE_MAS2(CONFIG_SYS_MONITOR_BASE, (MAS2_I))@h
	ori     r8,r8,FSL_BOOKE_MAS2(CONFIG_SYS_MONITOR_BASE,
							(MAS2_I))@l
	lis     r9,FSL_BOOKE_MAS3(CONFIG_SYS_MONITOR_BASE, 0,
						(MAS3_SX|MAS3_SW|MAS3_SR))@h
	ori     r9,r9,FSL_BOOKE_MAS3(CONFIG_SYS_MONITOR_BASE, 0,
						(MAS3_SX|MAS3_SW|MAS3_SR))@l
#endif
	mtspr   MAS0,r6
	mtspr   MAS1,r7
	mtspr   MAS2,r8
	mtspr   MAS3,r9
	tlbwe
	isync
#endif

/*
 * Ne need to setup interrupt vector for NAND SPL
 * because NAND SPL never compiles it.
 */
#if !defined(CONFIG_NAND_SPL)
	/* Setup interrupt vectors */
	lis	r1,CONFIG_SYS_MONITOR_BASE@h
	mtspr	IVPR,r1

	lis	r3,(CONFIG_SYS_MONITOR_BASE & 0xffff)@h
	ori	r3,r3,(CONFIG_SYS_MONITOR_BASE & 0xffff)@l

	addi	r4,r3,CriticalInput - _start + _START_OFFSET
	mtspr	IVOR0,r4	/* 0: Critical input */
	addi	r4,r3,MachineCheck - _start + _START_OFFSET
	mtspr	IVOR1,r4	/* 1: Machine check */
	addi	r4,r3,DataStorage - _start + _START_OFFSET
	mtspr	IVOR2,r4	/* 2: Data storage */
	addi	r4,r3,InstStorage - _start + _START_OFFSET
	mtspr	IVOR3,r4	/* 3: Instruction storage */
	addi	r4,r3,ExtInterrupt - _start + _START_OFFSET
	mtspr	IVOR4,r4	/* 4: External interrupt */
	addi	r4,r3,Alignment - _start + _START_OFFSET
	mtspr	IVOR5,r4	/* 5: Alignment */
	addi	r4,r3,ProgramCheck - _start + _START_OFFSET
	mtspr	IVOR6,r4	/* 6: Program check */
	addi	r4,r3,FPUnavailable - _start + _START_OFFSET
	mtspr	IVOR7,r4	/* 7: floating point unavailable */
	addi	r4,r3,SystemCall - _start + _START_OFFSET
	mtspr	IVOR8,r4	/* 8: System call */
	/* 9: Auxiliary processor unavailable(unsupported) */
	addi	r4,r3,Decrementer - _start + _START_OFFSET
	mtspr	IVOR10,r4	/* 10: Decrementer */
	addi	r4,r3,IntervalTimer - _start + _START_OFFSET
	mtspr	IVOR11,r4	/* 11: Interval timer */
	addi	r4,r3,WatchdogTimer - _start + _START_OFFSET
	mtspr	IVOR12,r4	/* 12: Watchdog timer */
	addi	r4,r3,DataTLBError - _start + _START_OFFSET
	mtspr	IVOR13,r4	/* 13: Data TLB error */
	addi	r4,r3,InstructionTLBError - _start + _START_OFFSET
	mtspr	IVOR14,r4	/* 14: Instruction TLB error */
	addi	r4,r3,DebugBreakpoint - _start + _START_OFFSET
	mtspr	IVOR15,r4	/* 15: Debug */
#endif

	/* Clear and set up some registers. */
	li      r0,0x0000
	lis	r1,0xffff
	mtspr	DEC,r0			/* prevent dec exceptions */
	mttbl	r0			/* prevent fit & wdt exceptions */
	mttbu	r0
	mtspr	TSR,r1			/* clear all timer exception status */
	mtspr	TCR,r0			/* disable all */
	mtspr	ESR,r0			/* clear exception syndrome register */
	mtspr	MCSR,r0			/* machine check syndrome register */
	mtxer	r0			/* clear integer exception register */

#ifdef CONFIG_SYS_BOOK3E_HV
	mtspr	MAS8,r0			/* make sure MAS8 is clear */
#endif

	/* Enable Time Base and Select Time Base Clock */
	lis	r0,HID0_EMCP@h		/* Enable machine check */
#if defined(CONFIG_ENABLE_36BIT_PHYS)
	ori	r0,r0,HID0_ENMAS7@l	/* Enable MAS7 */
#endif
#ifndef CONFIG_E500MC
	ori	r0,r0,HID0_TBEN@l	/* Enable Timebase */
#endif
	mtspr	HID0,r0

#ifndef CONFIG_E500MC
	li	r0,(HID1_ASTME|HID1_ABE)@l	/* Addr streaming & broadcast */
	mfspr	r3,PVR
	andi.	r3,r3, 0xff
	cmpwi	r3,0x50@l	/* if we are rev 5.0 or greater set MBDD */
	blt 1f
	/* Set MBDD bit also */
	ori r0, r0, HID1_MBDD@l
1:
	mtspr	HID1,r0
#endif

#ifdef CONFIG_SYS_FSL_ERRATUM_CPU_A003999
	mfspr	r3,977
	oris	r3,r3,0x0100
	mtspr	977,r3
#endif

	/* Enable Branch Prediction */
#if defined(CONFIG_BTB)
	lis	r0,BUCSR_ENABLE@h
	ori	r0,r0,BUCSR_ENABLE@l
	mtspr	SPRN_BUCSR,r0
#endif

#if defined(CONFIG_SYS_INIT_DBCR)
	lis	r1,0xffff
	ori	r1,r1,0xffff
	mtspr	DBSR,r1			/* Clear all status bits */
	lis	r0,CONFIG_SYS_INIT_DBCR@h	/* DBCR0[IDM] must be set */
	ori	r0,r0,CONFIG_SYS_INIT_DBCR@l
	mtspr	DBCR0,r0
#endif

#ifdef CONFIG_MPC8569
#define CONFIG_SYS_LBC_ADDR (CONFIG_SYS_CCSRBAR_DEFAULT + 0x5000)
#define CONFIG_SYS_LBCR_ADDR (CONFIG_SYS_LBC_ADDR + 0xd0)

	/* MPC8569 Rev.0 silcon needs to set bit 13 of LBCR to allow elBC to
	 * use address space which is more than 12bits, and it must be done in
	 * the 4K boot page. So we set this bit here.
	 */

	/* create a temp mapping TLB0[0] for LBCR  */
	lis     r6,FSL_BOOKE_MAS0(0, 0, 0)@h
	ori     r6,r6,FSL_BOOKE_MAS0(0, 0, 0)@l

	lis     r7,FSL_BOOKE_MAS1(1, 0, 0, 0, BOOKE_PAGESZ_4K)@h
	ori     r7,r7,FSL_BOOKE_MAS1(1, 0, 0, 0, BOOKE_PAGESZ_4K)@l

	lis     r8,FSL_BOOKE_MAS2(CONFIG_SYS_LBC_ADDR, MAS2_I|MAS2_G)@h
	ori     r8,r8,FSL_BOOKE_MAS2(CONFIG_SYS_LBC_ADDR, MAS2_I|MAS2_G)@l

	lis     r9,FSL_BOOKE_MAS3(CONFIG_SYS_LBC_ADDR, 0,
						(MAS3_SX|MAS3_SW|MAS3_SR))@h
	ori     r9,r9,FSL_BOOKE_MAS3(CONFIG_SYS_LBC_ADDR, 0,
						(MAS3_SX|MAS3_SW|MAS3_SR))@l

	mtspr   MAS0,r6
	mtspr   MAS1,r7
	mtspr   MAS2,r8
	mtspr   MAS3,r9
	isync
	msync
	tlbwe

	/* Set LBCR register */
	lis     r4,CONFIG_SYS_LBCR_ADDR@h
	ori     r4,r4,CONFIG_SYS_LBCR_ADDR@l

	lis     r5,CONFIG_SYS_LBC_LBCR@h
	ori     r5,r5,CONFIG_SYS_LBC_LBCR@l
	stw     r5,0(r4)
	isync

	/* invalidate this temp TLB */
	lis	r4,CONFIG_SYS_LBC_ADDR@h
	ori	r4,r4,CONFIG_SYS_LBC_ADDR@l
	tlbivax	0,r4
	isync

#endif /* CONFIG_MPC8569 */

/*
 * Search for the TLB that covers the code we're executing, and shrink it
 * so that it covers only this 4K page.  That will ensure that any other
 * TLB we create won't interfere with it.  We assume that the TLB exists,
 * which is why we don't check the Valid bit of MAS1.  We also assume
 * it is in TLB1.
 *
 * This is necessary, for example, when booting from the on-chip ROM,
 * which (oddly) creates a single 4GB TLB that covers CCSR and DDR.
 */
	bl	nexti		/* Find our address */
nexti:	mflr	r1		/* R1 = our PC */
	li	r2, 0
	mtspr	MAS6, r2	/* Assume the current PID and AS are 0 */
	isync
	msync
	tlbsx	0, r1		/* This must succeed */

	mfspr	r14, MAS0	/* Save ESEL for later */
	rlwinm	r14, r14, 16, 0xfff

	/* Set the size of the TLB to 4KB */
	mfspr	r3, MAS1
	li	r2, 0xF00
	andc	r3, r3, r2	/* Clear the TSIZE bits */
	ori	r3, r3, MAS1_TSIZE(BOOKE_PAGESZ_4K)@l
	oris	r3, r3, MAS1_IPROT@h
	mtspr	MAS1, r3

	/*
	 * Set the base address of the TLB to our PC.  We assume that
	 * virtual == physical.  We also assume that MAS2_EPN == MAS3_RPN.
	 */
	lis	r3, MAS2_EPN@h
	ori	r3, r3, MAS2_EPN@l	/* R3 = MAS2_EPN */

	and	r1, r1, r3	/* Our PC, rounded down to the nearest page */

	mfspr	r2, MAS2
	andc	r2, r2, r3
	or	r2, r2, r1
#ifdef CONFIG_SYS_FSL_ERRATUM_A004510
	cmpwi	r27,0
	beq	1f
	andi.	r15, r2, MAS2_I|MAS2_G /* save the old I/G for later */
	rlwinm	r2, r2, 0, ~MAS2_I
	ori	r2, r2, MAS2_G
1:
#endif
	mtspr	MAS2, r2	/* Set the EPN to our PC base address */

	mfspr	r2, MAS3
	andc	r2, r2, r3
	or	r2, r2, r1
	mtspr	MAS3, r2	/* Set the RPN to our PC base address */

	isync
	msync
	tlbwe

/*
 * Clear out any other TLB entries that may exist, to avoid conflicts.
 * Our TLB entry is in r14.
 */
	li	r0, TLBIVAX_ALL | TLBIVAX_TLB0
	tlbivax 0, r0
	tlbsync

	mfspr	r4, SPRN_TLB1CFG
	rlwinm	r4, r4, 0, TLBnCFG_NENTRY_MASK

	li	r3, 0
	mtspr	MAS1, r3
1:	cmpw	r3, r14
#if defined(CONFIG_SYS_PPC_E500_DEBUG_TLB) && !defined(CONFIG_NAND_SPL)
	cmpwi	cr1, r3, CONFIG_SYS_PPC_E500_DEBUG_TLB
	cror	cr0*4+eq, cr0*4+eq, cr1*4+eq
#endif
	rlwinm	r5, r3, 16, MAS0_ESEL_MSK
	addi	r3, r3, 1
	beq	2f		/* skip the entry we're executing from */

	oris	r5, r5, MAS0_TLBSEL(1)@h
	mtspr	MAS0, r5

	isync
	tlbwe
	isync
	msync

2:	cmpw	r3, r4
	blt	1b

/*
 * Relocate CCSR, if necessary.  We relocate CCSR if (obviously) the default
 * location is not where we want it.  This typically happens on a 36-bit
 * system, where we want to move CCSR to near the top of 36-bit address space.
 *
 * To move CCSR, we create two temporary TLBs, one for the old location, and
 * another for the new location.  On CoreNet systems, we also need to create
 * a special, temporary LAW.
 *
 * As a general rule, TLB0 is used for short-term TLBs, and TLB1 is used for
 * long-term TLBs, so we use TLB0 here.
 */
#if (CONFIG_SYS_CCSRBAR_DEFAULT != CONFIG_SYS_CCSRBAR_PHYS)

#if !defined(CONFIG_SYS_CCSRBAR_PHYS_HIGH) || !defined(CONFIG_SYS_CCSRBAR_PHYS_LOW)
#error "CONFIG_SYS_CCSRBAR_PHYS_HIGH and CONFIG_SYS_CCSRBAR_PHYS_LOW) must be defined."
#endif

create_ccsr_new_tlb:
	/*
	 * Create a TLB for the new location of CCSR.  Register R8 is reserved
	 * for the virtual address of this TLB (CONFIG_SYS_CCSRBAR).
	 */
	lis	r8, CONFIG_SYS_CCSRBAR@h
	ori	r8, r8, CONFIG_SYS_CCSRBAR@l
	lis	r9, (CONFIG_SYS_CCSRBAR + 0x1000)@h
	ori	r9, r9, (CONFIG_SYS_CCSRBAR + 0x1000)@l
	lis     r0, FSL_BOOKE_MAS0(0, 0, 0)@h
	ori     r0, r0, FSL_BOOKE_MAS0(0, 0, 0)@l
	lis     r1, FSL_BOOKE_MAS1(1, 0, 0, 0, BOOKE_PAGESZ_4K)@h
	ori     r1, r1, FSL_BOOKE_MAS1(1, 0, 0, 0, BOOKE_PAGESZ_4K)@l
	lis     r2, FSL_BOOKE_MAS2(CONFIG_SYS_CCSRBAR, (MAS2_I|MAS2_G))@h
	ori     r2, r2, FSL_BOOKE_MAS2(CONFIG_SYS_CCSRBAR, (MAS2_I|MAS2_G))@l
	lis     r3, FSL_BOOKE_MAS3(CONFIG_SYS_CCSRBAR_PHYS_LOW, 0, (MAS3_SW|MAS3_SR))@h
	ori     r3, r3, FSL_BOOKE_MAS3(CONFIG_SYS_CCSRBAR_PHYS_LOW, 0, (MAS3_SW|MAS3_SR))@l
#ifdef CONFIG_ENABLE_36BIT_PHYS
	lis	r7, CONFIG_SYS_CCSRBAR_PHYS_HIGH@h
	ori	r7, r7, CONFIG_SYS_CCSRBAR_PHYS_HIGH@l
	mtspr   MAS7, r7
#endif
	mtspr   MAS0, r0
	mtspr   MAS1, r1
	mtspr   MAS2, r2
	mtspr   MAS3, r3
	isync
	msync
	tlbwe

	/*
	 * Create a TLB for the current location of CCSR.  Register R9 is reserved
	 * for the virtual address of this TLB (CONFIG_SYS_CCSRBAR + 0x1000).
	 */
create_ccsr_old_tlb:
	lis     r0, FSL_BOOKE_MAS0(0, 1, 0)@h
	ori     r0, r0, FSL_BOOKE_MAS0(0, 1, 0)@l
	lis     r2, FSL_BOOKE_MAS2(CONFIG_SYS_CCSRBAR + 0x1000, (MAS2_I|MAS2_G))@h
	ori     r2, r2, FSL_BOOKE_MAS2(CONFIG_SYS_CCSRBAR + 0x1000, (MAS2_I|MAS2_G))@l
	lis     r3, FSL_BOOKE_MAS3(CONFIG_SYS_CCSRBAR_DEFAULT, 0, (MAS3_SW|MAS3_SR))@h
	ori     r3, r3, FSL_BOOKE_MAS3(CONFIG_SYS_CCSRBAR_DEFAULT, 0, (MAS3_SW|MAS3_SR))@l
#ifdef CONFIG_ENABLE_36BIT_PHYS
	li	r7, 0	/* The default CCSR address is always a 32-bit number */
	mtspr   MAS7, r7
#endif
	mtspr   MAS0, r0
	/* MAS1 is the same as above */
	mtspr   MAS2, r2
	mtspr   MAS3, r3
	isync
	msync
	tlbwe

	/*
	 * We have a TLB for what we think is the current (old) CCSR.  Let's
	 * verify that, otherwise we won't be able to move it.
	 * CONFIG_SYS_CCSRBAR_DEFAULT is always a 32-bit number, so we only
	 * need to compare the lower 32 bits of CCSRBAR on CoreNet systems.
	 */
verify_old_ccsr:
	lis     r0, CONFIG_SYS_CCSRBAR_DEFAULT@h
	ori     r0, r0, CONFIG_SYS_CCSRBAR_DEFAULT@l
#ifdef CONFIG_FSL_CORENET
	lwz	r1, 4(r9)		/* CCSRBARL */
#else
	lwz	r1, 0(r9)		/* CCSRBAR, shifted right by 12 */
	slwi	r1, r1, 12
#endif

	cmpl	0, r0, r1

	/*
	 * If the value we read from CCSRBARL is not what we expect, then
	 * enter an infinite loop.  This will at least allow a debugger to
	 * halt execution and examine TLBs, etc.  There's no point in going
	 * on.
	 */
infinite_debug_loop:
	bne	infinite_debug_loop

#ifdef CONFIG_FSL_CORENET

#define CCSR_LAWBARH0	(CONFIG_SYS_CCSRBAR + 0x1000)
#define LAW_EN		0x80000000
#define LAW_SIZE_4K	0xb
#define CCSRBAR_LAWAR	(LAW_EN | (0x1e << 20) | LAW_SIZE_4K)
#define CCSRAR_C	0x80000000	/* Commit */

create_temp_law:
	/*
	 * On CoreNet systems, we create the temporary LAW using a special LAW
	 * target ID of 0x1e.  LAWBARH is at offset 0xc00 in CCSR.
	 */
	lis     r0, CONFIG_SYS_CCSRBAR_PHYS_HIGH@h
	ori     r0, r0, CONFIG_SYS_CCSRBAR_PHYS_HIGH@l
	lis     r1, CONFIG_SYS_CCSRBAR_PHYS_LOW@h
	ori     r1, r1, CONFIG_SYS_CCSRBAR_PHYS_LOW@l
	lis     r2, CCSRBAR_LAWAR@h
	ori     r2, r2, CCSRBAR_LAWAR@l

	stw     r0, 0xc00(r9)	/* LAWBARH0 */
	stw     r1, 0xc04(r9)	/* LAWBARL0 */
	sync
	stw     r2, 0xc08(r9)	/* LAWAR0 */

	/*
	 * Read back from LAWAR to ensure the update is complete.  e500mc
	 * cores also require an isync.
	 */
	lwz	r0, 0xc08(r9)	/* LAWAR0 */
	isync

	/*
	 * Read the current CCSRBARH and CCSRBARL using load word instructions.
	 * Follow this with an isync instruction. This forces any outstanding
	 * accesses to configuration space to completion.
	 */
read_old_ccsrbar:
	lwz	r0, 0(r9)	/* CCSRBARH */
	lwz	r0, 4(r9)	/* CCSRBARL */
	isync

	/*
	 * Write the new values for CCSRBARH and CCSRBARL to their old
	 * locations.  The CCSRBARH has a shadow register. When the CCSRBARH
	 * has a new value written it loads a CCSRBARH shadow register. When
	 * the CCSRBARL is written, the CCSRBARH shadow register contents
	 * along with the CCSRBARL value are loaded into the CCSRBARH and
	 * CCSRBARL registers, respectively.  Follow this with a sync
	 * instruction.
	 */
write_new_ccsrbar:
	lis	r0, CONFIG_SYS_CCSRBAR_PHYS_HIGH@h
	ori	r0, r0, CONFIG_SYS_CCSRBAR_PHYS_HIGH@l
	lis	r1, CONFIG_SYS_CCSRBAR_PHYS_LOW@h
	ori	r1, r1, CONFIG_SYS_CCSRBAR_PHYS_LOW@l
	lis	r2, CCSRAR_C@h
	ori	r2, r2, CCSRAR_C@l

	stw	r0, 0(r9)	/* Write to CCSRBARH */
	sync			/* Make sure we write to CCSRBARH first */
	stw	r1, 4(r9)	/* Write to CCSRBARL */
	sync

	/*
	 * Write a 1 to the commit bit (C) of CCSRAR at the old location.
	 * Follow this with a sync instruction.
	 */
	stw	r2, 8(r9)
	sync

	/* Delete the temporary LAW */
delete_temp_law:
	li	r1, 0
	stw	r1, 0xc08(r8)
	sync
	stw	r1, 0xc00(r8)
	stw	r1, 0xc04(r8)
	sync

#else /* #ifdef CONFIG_FSL_CORENET */

write_new_ccsrbar:
	/*
	 * Read the current value of CCSRBAR using a load word instruction
	 * followed by an isync. This forces all accesses to configuration
	 * space to complete.
	 */
	sync
	lwz	r0, 0(r9)
	isync

/* CONFIG_SYS_CCSRBAR_PHYS right shifted by 12 */
#define CCSRBAR_PHYS_RS12 ((CONFIG_SYS_CCSRBAR_PHYS_HIGH << 20) | \
			   (CONFIG_SYS_CCSRBAR_PHYS_LOW >> 12))

	/* Write the new value to CCSRBAR. */
	lis	r0, CCSRBAR_PHYS_RS12@h
	ori	r0, r0, CCSRBAR_PHYS_RS12@l
	stw	r0, 0(r9)
	sync

	/*
	 * The manual says to perform a load of an address that does not
	 * access configuration space or the on-chip SRAM using an existing TLB,
	 * but that doesn't appear to be necessary.  We will do the isync,
	 * though.
	 */
	isync

	/*
	 * Read the contents of CCSRBAR from its new location, followed by
	 * another isync.
	 */
	lwz	r0, 0(r8)
	isync

#endif  /* #ifdef CONFIG_FSL_CORENET */

	/* Delete the temporary TLBs */
delete_temp_tlbs:
	lis     r0, FSL_BOOKE_MAS0(0, 0, 0)@h
	ori     r0, r0, FSL_BOOKE_MAS0(0, 0, 0)@l
	li	r1, 0
	lis     r2, FSL_BOOKE_MAS2(CONFIG_SYS_CCSRBAR, (MAS2_I|MAS2_G))@h
	ori     r2, r2, FSL_BOOKE_MAS2(CONFIG_SYS_CCSRBAR, (MAS2_I|MAS2_G))@l
	mtspr   MAS0, r0
	mtspr   MAS1, r1
	mtspr   MAS2, r2
	isync
	msync
	tlbwe

	lis     r0, FSL_BOOKE_MAS0(0, 1, 0)@h
	ori     r0, r0, FSL_BOOKE_MAS0(0, 1, 0)@l
	lis     r2, FSL_BOOKE_MAS2(CONFIG_SYS_CCSRBAR + 0x1000, (MAS2_I|MAS2_G))@h
	ori     r2, r2, FSL_BOOKE_MAS2(CONFIG_SYS_CCSRBAR + 0x1000, (MAS2_I|MAS2_G))@l
	mtspr   MAS0, r0
	mtspr   MAS2, r2
	isync
	msync
	tlbwe
#endif /* #if (CONFIG_SYS_CCSRBAR_DEFAULT != CONFIG_SYS_CCSRBAR_PHYS) */

#ifdef CONFIG_SYS_FSL_ERRATUM_A004510
#define DCSR_LAWBARH0	(CONFIG_SYS_CCSRBAR + 0x1000)
#define LAW_SIZE_1M	0x13
#define DCSRBAR_LAWAR	(LAW_EN | (0x1d << 20) | LAW_SIZE_1M)

	cmpwi	r27,0
	beq	9f

	/*
	 * Create a TLB entry for CCSR
	 *
	 * We're executing out of TLB1 entry in r14, and that's the only
	 * TLB entry that exists.  To allocate some TLB entries for our
	 * own use, flip a bit high enough that we won't flip it again
	 * via incrementing.
	 */

	xori	r8, r14, 32
	lis	r0, MAS0_TLBSEL(1)@h
	rlwimi	r0, r8, 16, MAS0_ESEL_MSK
	lis	r1, FSL_BOOKE_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_16M)@h
	ori	r1, r1, FSL_BOOKE_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_16M)@l
	lis	r7, CONFIG_SYS_CCSRBAR@h
	ori	r7, r7, CONFIG_SYS_CCSRBAR@l
	ori	r2, r7, MAS2_I|MAS2_G
	lis	r3, FSL_BOOKE_MAS3(CONFIG_SYS_CCSRBAR_PHYS_LOW, 0, (MAS3_SW|MAS3_SR))@h
	ori	r3, r3, FSL_BOOKE_MAS3(CONFIG_SYS_CCSRBAR_PHYS_LOW, 0, (MAS3_SW|MAS3_SR))@l
	lis	r4, CONFIG_SYS_CCSRBAR_PHYS_HIGH@h
	ori	r4, r4, CONFIG_SYS_CCSRBAR_PHYS_HIGH@l
	mtspr	MAS0, r0
	mtspr	MAS1, r1
	mtspr	MAS2, r2
	mtspr	MAS3, r3
	mtspr	MAS7, r4
	isync
	tlbwe
	isync
	msync

	/* Map DCSR temporarily to physical address zero */
	li	r0, 0
	lis	r3, DCSRBAR_LAWAR@h
	ori	r3, r3, DCSRBAR_LAWAR@l

	stw	r0, 0xc00(r7)	/* LAWBARH0 */
	stw	r0, 0xc04(r7)	/* LAWBARL0 */
	sync
	stw	r3, 0xc08(r7)	/* LAWAR0 */

	/* Read back from LAWAR to ensure the update is complete. */
	lwz	r3, 0xc08(r7)	/* LAWAR0 */
	isync

	/* Create a TLB entry for DCSR at zero */

	addi	r9, r8, 1
	lis	r0, MAS0_TLBSEL(1)@h
	rlwimi	r0, r9, 16, MAS0_ESEL_MSK
	lis	r1, FSL_BOOKE_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_1M)@h
	ori	r1, r1, FSL_BOOKE_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_1M)@l
	li	r6, 0	/* DCSR effective address */
	ori	r2, r6, MAS2_I|MAS2_G
	li	r3, MAS3_SW|MAS3_SR
	li	r4, 0
	mtspr	MAS0, r0
	mtspr	MAS1, r1
	mtspr	MAS2, r2
	mtspr	MAS3, r3
	mtspr	MAS7, r4
	isync
	tlbwe
	isync
	msync

	/* enable the timebase */
#define CTBENR	0xe2084
	li	r3, 1
	addis	r4, r7, CTBENR@ha
	stw	r3, CTBENR@l(r4)
	lwz	r3, CTBENR@l(r4)
	twi	0,r3,0
	isync

	.macro	erratum_set_ccsr offset value
	addis	r3, r7, \offset@ha
	lis	r4, \value@h
	addi	r3, r3, \offset@l
	ori	r4, r4, \value@l
	bl	erratum_set_value
	.endm

	.macro	erratum_set_dcsr offset value
	addis	r3, r6, \offset@ha
	lis	r4, \value@h
	addi	r3, r3, \offset@l
	ori	r4, r4, \value@l
	bl	erratum_set_value
	.endm

	erratum_set_dcsr 0xb0e08 0xe0201800
	erratum_set_dcsr 0xb0e18 0xe0201800
	erratum_set_dcsr 0xb0e38 0xe0400000
	erratum_set_dcsr 0xb0008 0x00900000
	erratum_set_dcsr 0xb0e40 0xe00a0000
	erratum_set_ccsr 0x18600 CONFIG_SYS_FSL_CORENET_SNOOPVEC_COREONLY
	erratum_set_ccsr 0x10f00 0x415e5000
	erratum_set_ccsr 0x11f00 0x415e5000

	/* Make temp mapping uncacheable again, if it was initially */
	bl	2f
2:	mflr	r3
	tlbsx	0, r3
	mfspr	r4, MAS2
	rlwimi	r4, r15, 0, MAS2_I
	rlwimi	r4, r15, 0, MAS2_G
	mtspr	MAS2, r4
	isync
	tlbwe
	isync
	msync

	/* Clear the cache */
	lis	r3,(L1CSR1_ICFI|L1CSR1_ICLFR)@h
	ori	r3,r3,(L1CSR1_ICFI|L1CSR1_ICLFR)@l
	sync
	isync
	mtspr	SPRN_L1CSR1,r3
	isync
2:	sync
	mfspr	r4,SPRN_L1CSR1
	and.	r4,r4,r3
	bne	2b

	lis	r3,(L1CSR1_CPE|L1CSR1_ICE)@h
	ori	r3,r3,(L1CSR1_CPE|L1CSR1_ICE)@l
	sync
	isync
	mtspr	SPRN_L1CSR1,r3
	isync
2:	sync
	mfspr	r4,SPRN_L1CSR1
	and.	r4,r4,r3
	beq	2b

	/* Remove temporary mappings */
	lis	r0, MAS0_TLBSEL(1)@h
	rlwimi	r0, r9, 16, MAS0_ESEL_MSK
	li	r3, 0
	mtspr	MAS0, r0
	mtspr	MAS1, r3
	isync
	tlbwe
	isync
	msync

	li	r3, 0
	stw	r3, 0xc08(r7)	/* LAWAR0 */
	lwz	r3, 0xc08(r7)
	isync

	lis	r0, MAS0_TLBSEL(1)@h
	rlwimi	r0, r8, 16, MAS0_ESEL_MSK
	li	r3, 0
	mtspr	MAS0, r0
	mtspr	MAS1, r3
	isync
	tlbwe
	isync
	msync

	b	9f

	/* r3 = addr, r4 = value, clobbers r5, r11, r12 */
erratum_set_value:
	/* Lock two cache lines into I-Cache */
	sync
	mfspr	r11, SPRN_L1CSR1
	rlwinm	r11, r11, 0, ~L1CSR1_ICUL
	sync
	isync
	mtspr	SPRN_L1CSR1, r11
	isync

	mflr	r12
	bl	5f
5:	mflr	r5
	addi	r5, r5, 2f - 5b
	icbtls	0, 0, r5
	addi	r5, r5, 64

	sync
	mfspr	r11, SPRN_L1CSR1
3:	andi.	r11, r11, L1CSR1_ICUL
	bne	3b

	icbtls	0, 0, r5
	addi	r5, r5, 64

	sync
	mfspr	r11, SPRN_L1CSR1
3:	andi.	r11, r11, L1CSR1_ICUL
	bne	3b

	b	2f
	.align	6
	/* Inside a locked cacheline, wait a while, write, then wait a while */
2:	sync

	mfspr	r5, SPRN_TBRL
	addis	r11, r5, 0x10000@h /* wait 65536 timebase ticks */
4:	mfspr	r5, SPRN_TBRL
	subf.	r5, r5, r11
	bgt	4b

	stw	r4, 0(r3)

	mfspr	r5, SPRN_TBRL
	addis	r11, r5, 0x10000@h /* wait 65536 timebase ticks */
4:	mfspr	r5, SPRN_TBRL
	subf.	r5, r5, r11
	bgt	4b

	sync

	/*
	 * Fill out the rest of this cache line and the next with nops,
	 * to ensure that nothing outside the locked area will be
	 * fetched due to a branch.
	 */
	.rept 19
	nop
	.endr

	sync
	mfspr	r11, SPRN_L1CSR1
	rlwinm	r11, r11, 0, ~L1CSR1_ICUL
	sync
	isync
	mtspr	SPRN_L1CSR1, r11
	isync

	mtlr	r12
	blr

9:
#endif

create_init_ram_area:
	lis     r6,FSL_BOOKE_MAS0(1, 15, 0)@h
	ori     r6,r6,FSL_BOOKE_MAS0(1, 15, 0)@l

#if !defined(CONFIG_SYS_RAMBOOT) && !defined(CONFIG_SECURE_BOOT)
	/* create a temp mapping in AS=1 to the 4M boot window */
	lis     r7,FSL_BOOKE_MAS1(1, 1, 0, 1, BOOKE_PAGESZ_4M)@h
	ori     r7,r7,FSL_BOOKE_MAS1(1, 1, 0, 1, BOOKE_PAGESZ_4M)@l

	lis     r8,FSL_BOOKE_MAS2(CONFIG_SYS_MONITOR_BASE & 0xffc00000, (MAS2_I|MAS2_G))@h
	ori     r8,r8,FSL_BOOKE_MAS2(CONFIG_SYS_MONITOR_BASE & 0xffc00000, (MAS2_I|MAS2_G))@l

	/* The 85xx has the default boot window 0xff800000 - 0xffffffff */
	lis     r9,FSL_BOOKE_MAS3(0xffc00000, 0, (MAS3_SX|MAS3_SW|MAS3_SR))@h
	ori     r9,r9,FSL_BOOKE_MAS3(0xffc00000, 0, (MAS3_SX|MAS3_SW|MAS3_SR))@l
#elif !defined(CONFIG_SYS_RAMBOOT) && defined(CONFIG_SECURE_BOOT)
	/* create a temp mapping in AS = 1 for Flash mapping
	 * created by PBL for ISBC code
	*/
	lis     r7,FSL_BOOKE_MAS1(1, 1, 0, 1, BOOKE_PAGESZ_1M)@h
	ori     r7,r7,FSL_BOOKE_MAS1(1, 1, 0, 1, BOOKE_PAGESZ_1M)@l

	lis     r8,FSL_BOOKE_MAS2(CONFIG_SYS_MONITOR_BASE, (MAS2_I|MAS2_G))@h
	ori     r8,r8,FSL_BOOKE_MAS2(CONFIG_SYS_MONITOR_BASE, (MAS2_I|MAS2_G))@l

	lis     r9,FSL_BOOKE_MAS3(CONFIG_SYS_PBI_FLASH_WINDOW, 0,
						(MAS3_SX|MAS3_SW|MAS3_SR))@h
	ori     r9,r9,FSL_BOOKE_MAS3(CONFIG_SYS_PBI_FLASH_WINDOW, 0,
						(MAS3_SX|MAS3_SW|MAS3_SR))@l
#else
	/*
	 * create a temp mapping in AS=1 to the 1M CONFIG_SYS_MONITOR_BASE space, the main
	 * image has been relocated to CONFIG_SYS_MONITOR_BASE on the second stage.
	 */
	lis     r7,FSL_BOOKE_MAS1(1, 1, 0, 1, BOOKE_PAGESZ_1M)@h
	ori     r7,r7,FSL_BOOKE_MAS1(1, 1, 0, 1, BOOKE_PAGESZ_1M)@l

	lis     r8,FSL_BOOKE_MAS2(CONFIG_SYS_MONITOR_BASE, (MAS2_I|MAS2_G))@h
	ori     r8,r8,FSL_BOOKE_MAS2(CONFIG_SYS_MONITOR_BASE, (MAS2_I|MAS2_G))@l

	lis     r9,FSL_BOOKE_MAS3(CONFIG_SYS_MONITOR_BASE, 0, (MAS3_SX|MAS3_SW|MAS3_SR))@h
	ori     r9,r9,FSL_BOOKE_MAS3(CONFIG_SYS_MONITOR_BASE, 0, (MAS3_SX|MAS3_SW|MAS3_SR))@l
#endif

	mtspr   MAS0,r6
	mtspr   MAS1,r7
	mtspr   MAS2,r8
	mtspr   MAS3,r9
	isync
	msync
	tlbwe

	/* create a temp mapping in AS=1 to the stack */
	lis     r6,FSL_BOOKE_MAS0(1, 14, 0)@h
	ori     r6,r6,FSL_BOOKE_MAS0(1, 14, 0)@l

	lis     r7,FSL_BOOKE_MAS1(1, 1, 0, 1, BOOKE_PAGESZ_16K)@h
	ori     r7,r7,FSL_BOOKE_MAS1(1, 1, 0, 1, BOOKE_PAGESZ_16K)@l

	lis     r8,FSL_BOOKE_MAS2(CONFIG_SYS_INIT_RAM_ADDR, 0)@h
	ori     r8,r8,FSL_BOOKE_MAS2(CONFIG_SYS_INIT_RAM_ADDR, 0)@l

#if defined(CONFIG_SYS_INIT_RAM_ADDR_PHYS_LOW) && \
    defined(CONFIG_SYS_INIT_RAM_ADDR_PHYS_HIGH)
	lis     r9,FSL_BOOKE_MAS3(CONFIG_SYS_INIT_RAM_ADDR_PHYS_LOW, 0,
				(MAS3_SX|MAS3_SW|MAS3_SR))@h
	ori     r9,r9,FSL_BOOKE_MAS3(CONFIG_SYS_INIT_RAM_ADDR_PHYS_LOW, 0,
				(MAS3_SX|MAS3_SW|MAS3_SR))@l
	li      r10,CONFIG_SYS_INIT_RAM_ADDR_PHYS_HIGH
	mtspr	MAS7,r10
#else
	lis     r9,FSL_BOOKE_MAS3(CONFIG_SYS_INIT_RAM_ADDR, 0, (MAS3_SX|MAS3_SW|MAS3_SR))@h
	ori     r9,r9,FSL_BOOKE_MAS3(CONFIG_SYS_INIT_RAM_ADDR, 0, (MAS3_SX|MAS3_SW|MAS3_SR))@l
#endif

	mtspr   MAS0,r6
	mtspr   MAS1,r7
	mtspr   MAS2,r8
	mtspr   MAS3,r9
	isync
	msync
	tlbwe

	lis	r6,MSR_IS|MSR_DS|MSR_DE@h
	ori	r6,r6,MSR_IS|MSR_DS|MSR_DE@l
	lis	r7,switch_as@h
	ori	r7,r7,switch_as@l

	mtspr	SPRN_SRR0,r7
	mtspr	SPRN_SRR1,r6
	rfi

switch_as:
/* L1 DCache is used for initial RAM */

	/* Allocate Initial RAM in data cache.
	 */
	lis	r3,CONFIG_SYS_INIT_RAM_ADDR@h
	ori	r3,r3,CONFIG_SYS_INIT_RAM_ADDR@l
	mfspr	r2, L1CFG0
	andi.	r2, r2, 0x1ff
	/* cache size * 1024 / (2 * L1 line size) */
	slwi	r2, r2, (10 - 1 - L1_CACHE_SHIFT)
	mtctr	r2
	li	r0,0
1:
	dcbz	r0,r3
	dcbtls	0,r0,r3
	addi	r3,r3,CONFIG_SYS_CACHELINE_SIZE
	bdnz	1b

	/* Jump out the last 4K page and continue to 'normal' start */
#ifdef CONFIG_SYS_RAMBOOT
	b	_start_cont
#else
	/* Calculate absolute address in FLASH and jump there		*/
	/*--------------------------------------------------------------*/
	lis	r3,CONFIG_SYS_MONITOR_BASE@h
	ori	r3,r3,CONFIG_SYS_MONITOR_BASE@l
	addi	r3,r3,_start_cont - _start + _START_OFFSET
	mtlr	r3
	blr
#endif

	.text
	.globl	_start
_start:
	.long	0x27051956		/* U-BOOT Magic Number */
	.globl	version_string
version_string:
	.ascii U_BOOT_VERSION_STRING, "\0"

	.align	4
	.globl	_start_cont
_start_cont:
	/* Setup the stack in initial RAM,could be L2-as-SRAM or L1 dcache*/
	lis	r3,(CONFIG_SYS_INIT_RAM_ADDR)@h
	ori	r3,r3,((CONFIG_SYS_INIT_SP_OFFSET-16)&~0xf)@l /* Align to 16 */
	li	r0,0
	stw	r0,0(r3)	/* Terminate Back Chain */
	stw	r0,+4(r3)	/* NULL return address. */
	mr	r1,r3		/* Transfer to SP(r1) */

	GET_GOT
	bl	cpu_init_early_f

	/* switch back to AS = 0 */
	lis	r3,(MSR_CE|MSR_ME|MSR_DE)@h
	ori	r3,r3,(MSR_CE|MSR_ME|MSR_DE)@l
	mtmsr	r3
	isync

	bl	cpu_init_f
	bl	board_init_f
	isync

	/* NOTREACHED - board_init_f() does not return */

#ifndef CONFIG_NAND_SPL
	. = EXC_OFF_SYS_RESET
	.globl	_start_of_vectors
_start_of_vectors:

/* Critical input. */
	CRIT_EXCEPTION(0x0100, CriticalInput, CritcalInputException)

/* Machine check */
	MCK_EXCEPTION(0x200, MachineCheck, MachineCheckException)

/* Data Storage exception. */
	STD_EXCEPTION(0x0300, DataStorage, UnknownException)

/* Instruction Storage exception. */
	STD_EXCEPTION(0x0400, InstStorage, UnknownException)

/* External Interrupt exception. */
	STD_EXCEPTION(0x0500, ExtInterrupt, ExtIntException)

/* Alignment exception. */
	. = 0x0600
Alignment:
	EXCEPTION_PROLOG(SRR0, SRR1)
	mfspr	r4,DAR
	stw	r4,_DAR(r21)
	mfspr	r5,DSISR
	stw	r5,_DSISR(r21)
	addi	r3,r1,STACK_FRAME_OVERHEAD
	EXC_XFER_TEMPLATE(Alignment, AlignmentException, MSR_KERNEL, COPY_EE)

/* Program check exception */
	. = 0x0700
ProgramCheck:
	EXCEPTION_PROLOG(SRR0, SRR1)
	addi	r3,r1,STACK_FRAME_OVERHEAD
	EXC_XFER_TEMPLATE(ProgramCheck, ProgramCheckException,
		MSR_KERNEL, COPY_EE)

	/* No FPU on MPC85xx.  This exception is not supposed to happen.
	*/
	STD_EXCEPTION(0x0800, FPUnavailable, UnknownException)

	. = 0x0900
/*
 * r0 - SYSCALL number
 * r3-... arguments
 */
SystemCall:
	addis	r11,r0,0	/* get functions table addr */
	ori	r11,r11,0	/* Note: this code is patched in trap_init */
	addis	r12,r0,0	/* get number of functions */
	ori	r12,r12,0

	cmplw	0,r0,r12
	bge	1f

	rlwinm	r0,r0,2,0,31	/* fn_addr = fn_tbl[r0] */
	add	r11,r11,r0
	lwz	r11,0(r11)

	li	r20,0xd00-4	/* Get stack pointer */
	lwz	r12,0(r20)
	subi	r12,r12,12	/* Adjust stack pointer */
	li	r0,0xc00+_end_back-SystemCall
	cmplw	0,r0,r12	/* Check stack overflow */
	bgt	1f
	stw	r12,0(r20)

	mflr	r0
	stw	r0,0(r12)
	mfspr	r0,SRR0
	stw	r0,4(r12)
	mfspr	r0,SRR1
	stw	r0,8(r12)

	li	r12,0xc00+_back-SystemCall
	mtlr	r12
	mtspr	SRR0,r11

1:	SYNC
	rfi
_back:

	mfmsr	r11			/* Disable interrupts */
	li	r12,0
	ori	r12,r12,MSR_EE
	andc	r11,r11,r12
	SYNC				/* Some chip revs need this... */
	mtmsr	r11
	SYNC

	li	r12,0xd00-4		/* restore regs */
	lwz	r12,0(r12)

	lwz	r11,0(r12)
	mtlr	r11
	lwz	r11,4(r12)
	mtspr	SRR0,r11
	lwz	r11,8(r12)
	mtspr	SRR1,r11

	addi	r12,r12,12		/* Adjust stack pointer */
	li	r20,0xd00-4
	stw	r12,0(r20)

	SYNC
	rfi
_end_back:

	STD_EXCEPTION(0x0a00, Decrementer, timer_interrupt)
	STD_EXCEPTION(0x0b00, IntervalTimer, UnknownException)
	STD_EXCEPTION(0x0c00, WatchdogTimer, UnknownException)

	STD_EXCEPTION(0x0d00, DataTLBError, UnknownException)
	STD_EXCEPTION(0x0e00, InstructionTLBError, UnknownException)

	CRIT_EXCEPTION(0x0f00, DebugBreakpoint, DebugException )

	.globl	_end_of_vectors
_end_of_vectors:


	. = . + (0x100 - ( . & 0xff ))	/* align for debug */

/*
 * This code finishes saving the registers to the exception frame
 * and jumps to the appropriate handler for the exception.
 * Register r21 is pointer into trap frame, r1 has new stack pointer.
 */
	.globl	transfer_to_handler
transfer_to_handler:
	stw	r22,_NIP(r21)
	lis	r22,MSR_POW@h
	andc	r23,r23,r22
	stw	r23,_MSR(r21)
	SAVE_GPR(7, r21)
	SAVE_4GPRS(8, r21)
	SAVE_8GPRS(12, r21)
	SAVE_8GPRS(24, r21)

	mflr	r23
	andi.	r24,r23,0x3f00		/* get vector offset */
	stw	r24,TRAP(r21)
	li	r22,0
	stw	r22,RESULT(r21)
	mtspr	SPRG2,r22		/* r1 is now kernel sp */

	lwz	r24,0(r23)		/* virtual address of handler */
	lwz	r23,4(r23)		/* where to go when done */
	mtspr	SRR0,r24
	mtspr	SRR1,r20
	mtlr	r23
	SYNC
	rfi				/* jump to handler, enable MMU */

int_return:
	mfmsr	r28		/* Disable interrupts */
	li	r4,0
	ori	r4,r4,MSR_EE
	andc	r28,r28,r4
	SYNC			/* Some chip revs need this... */
	mtmsr	r28
	SYNC
	lwz	r2,_CTR(r1)
	lwz	r0,_LINK(r1)
	mtctr	r2
	mtlr	r0
	lwz	r2,_XER(r1)
	lwz	r0,_CCR(r1)
	mtspr	XER,r2
	mtcrf	0xFF,r0
	REST_10GPRS(3, r1)
	REST_10GPRS(13, r1)
	REST_8GPRS(23, r1)
	REST_GPR(31, r1)
	lwz	r2,_NIP(r1)	/* Restore environment */
	lwz	r0,_MSR(r1)
	mtspr	SRR0,r2
	mtspr	SRR1,r0
	lwz	r0,GPR0(r1)
	lwz	r2,GPR2(r1)
	lwz	r1,GPR1(r1)
	SYNC
	rfi

crit_return:
	mfmsr	r28		/* Disable interrupts */
	li	r4,0
	ori	r4,r4,MSR_EE
	andc	r28,r28,r4
	SYNC			/* Some chip revs need this... */
	mtmsr	r28
	SYNC
	lwz	r2,_CTR(r1)
	lwz	r0,_LINK(r1)
	mtctr	r2
	mtlr	r0
	lwz	r2,_XER(r1)
	lwz	r0,_CCR(r1)
	mtspr	XER,r2
	mtcrf	0xFF,r0
	REST_10GPRS(3, r1)
	REST_10GPRS(13, r1)
	REST_8GPRS(23, r1)
	REST_GPR(31, r1)
	lwz	r2,_NIP(r1)	/* Restore environment */
	lwz	r0,_MSR(r1)
	mtspr	SPRN_CSRR0,r2
	mtspr	SPRN_CSRR1,r0
	lwz	r0,GPR0(r1)
	lwz	r2,GPR2(r1)
	lwz	r1,GPR1(r1)
	SYNC
	rfci

mck_return:
	mfmsr	r28		/* Disable interrupts */
	li	r4,0
	ori	r4,r4,MSR_EE
	andc	r28,r28,r4
	SYNC			/* Some chip revs need this... */
	mtmsr	r28
	SYNC
	lwz	r2,_CTR(r1)
	lwz	r0,_LINK(r1)
	mtctr	r2
	mtlr	r0
	lwz	r2,_XER(r1)
	lwz	r0,_CCR(r1)
	mtspr	XER,r2
	mtcrf	0xFF,r0
	REST_10GPRS(3, r1)
	REST_10GPRS(13, r1)
	REST_8GPRS(23, r1)
	REST_GPR(31, r1)
	lwz	r2,_NIP(r1)	/* Restore environment */
	lwz	r0,_MSR(r1)
	mtspr	SPRN_MCSRR0,r2
	mtspr	SPRN_MCSRR1,r0
	lwz	r0,GPR0(r1)
	lwz	r2,GPR2(r1)
	lwz	r1,GPR1(r1)
	SYNC
	rfmci

/* Cache functions.
*/
.globl flush_icache
flush_icache:
.globl invalidate_icache
invalidate_icache:
	mfspr	r0,L1CSR1
	ori	r0,r0,L1CSR1_ICFI
	msync
	isync
	mtspr	L1CSR1,r0
	isync
	blr				/* entire I cache */

.globl invalidate_dcache
invalidate_dcache:
	mfspr	r0,L1CSR0
	ori	r0,r0,L1CSR0_DCFI
	msync
	isync
	mtspr	L1CSR0,r0
	isync
	blr

	.globl	icache_enable
icache_enable:
	mflr	r8
	bl	invalidate_icache
	mtlr	r8
	isync
	mfspr	r4,L1CSR1
	ori	r4,r4,0x0001
	oris	r4,r4,0x0001
	mtspr	L1CSR1,r4
	isync
	blr

	.globl	icache_disable
icache_disable:
	mfspr	r0,L1CSR1
	lis	r3,0
	ori	r3,r3,L1CSR1_ICE
	andc	r0,r0,r3
	mtspr	L1CSR1,r0
	isync
	blr

	.globl	icache_status
icache_status:
	mfspr	r3,L1CSR1
	andi.	r3,r3,L1CSR1_ICE
	blr

	.globl	dcache_enable
dcache_enable:
	mflr	r8
	bl	invalidate_dcache
	mtlr	r8
	isync
	mfspr	r0,L1CSR0
	ori	r0,r0,0x0001
	oris	r0,r0,0x0001
	msync
	isync
	mtspr	L1CSR0,r0
	isync
	blr

	.globl	dcache_disable
dcache_disable:
	mfspr	r3,L1CSR0
	lis	r4,0
	ori	r4,r4,L1CSR0_DCE
	andc	r3,r3,r4
	mtspr	L1CSR0,r3
	isync
	blr

	.globl	dcache_status
dcache_status:
	mfspr	r3,L1CSR0
	andi.	r3,r3,L1CSR0_DCE
	blr

	.globl get_pir
get_pir:
	mfspr	r3,PIR
	blr

	.globl get_pvr
get_pvr:
	mfspr	r3,PVR
	blr

	.globl get_svr
get_svr:
	mfspr	r3,SVR
	blr

	.globl wr_tcr
wr_tcr:
	mtspr	TCR,r3
	blr

/*------------------------------------------------------------------------------- */
/* Function:	 in8 */
/* Description:	 Input 8 bits */
/*------------------------------------------------------------------------------- */
	.globl	in8
in8:
	lbz	r3,0x0000(r3)
	blr

/*------------------------------------------------------------------------------- */
/* Function:	 out8 */
/* Description:	 Output 8 bits */
/*------------------------------------------------------------------------------- */
	.globl	out8
out8:
	stb	r4,0x0000(r3)
	sync
	blr

/*------------------------------------------------------------------------------- */
/* Function:	 out16 */
/* Description:	 Output 16 bits */
/*------------------------------------------------------------------------------- */
	.globl	out16
out16:
	sth	r4,0x0000(r3)
	sync
	blr

/*------------------------------------------------------------------------------- */
/* Function:	 out16r */
/* Description:	 Byte reverse and output 16 bits */
/*------------------------------------------------------------------------------- */
	.globl	out16r
out16r:
	sthbrx	r4,r0,r3
	sync
	blr

/*------------------------------------------------------------------------------- */
/* Function:	 out32 */
/* Description:	 Output 32 bits */
/*------------------------------------------------------------------------------- */
	.globl	out32
out32:
	stw	r4,0x0000(r3)
	sync
	blr

/*------------------------------------------------------------------------------- */
/* Function:	 out32r */
/* Description:	 Byte reverse and output 32 bits */
/*------------------------------------------------------------------------------- */
	.globl	out32r
out32r:
	stwbrx	r4,r0,r3
	sync
	blr

/*------------------------------------------------------------------------------- */
/* Function:	 in16 */
/* Description:	 Input 16 bits */
/*------------------------------------------------------------------------------- */
	.globl	in16
in16:
	lhz	r3,0x0000(r3)
	blr

/*------------------------------------------------------------------------------- */
/* Function:	 in16r */
/* Description:	 Input 16 bits and byte reverse */
/*------------------------------------------------------------------------------- */
	.globl	in16r
in16r:
	lhbrx	r3,r0,r3
	blr

/*------------------------------------------------------------------------------- */
/* Function:	 in32 */
/* Description:	 Input 32 bits */
/*------------------------------------------------------------------------------- */
	.globl	in32
in32:
	lwz	3,0x0000(3)
	blr

/*------------------------------------------------------------------------------- */
/* Function:	 in32r */
/* Description:	 Input 32 bits and byte reverse */
/*------------------------------------------------------------------------------- */
	.globl	in32r
in32r:
	lwbrx	r3,r0,r3
	blr
#endif  /* !CONFIG_NAND_SPL */

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

/*
 * void write_tlb(mas0, mas1, mas2, mas3, mas7)
 */
	.globl	write_tlb
write_tlb:
	mtspr	MAS0,r3
	mtspr	MAS1,r4
	mtspr	MAS2,r5
	mtspr	MAS3,r6
#ifdef CONFIG_ENABLE_36BIT_PHYS
	mtspr	MAS7,r7
#endif
	li	r3,0
#ifdef CONFIG_SYS_BOOK3E_HV
	mtspr	MAS8,r3
#endif
	isync
	tlbwe
	msync
	isync
	blr

/*
 * void relocate_code (addr_sp, gd, addr_moni)
 *
 * This "function" does not return, instead it continues in RAM
 * after relocating the monitor code.
 *
 * r3 = dest
 * r4 = src
 * r5 = length in bytes
 * r6 = cachelinesize
 */
	.globl	relocate_code
relocate_code:
	mr	r1,r3		/* Set new stack pointer		*/
	mr	r9,r4		/* Save copy of Init Data pointer	*/
	mr	r10,r5		/* Save copy of Destination Address	*/

	GET_GOT
	mr	r3,r5				/* Destination Address	*/
	lis	r4,CONFIG_SYS_MONITOR_BASE@h		/* Source      Address	*/
	ori	r4,r4,CONFIG_SYS_MONITOR_BASE@l
	lwz	r5,GOT(__init_end)
	sub	r5,r5,r4
	li	r6,CONFIG_SYS_CACHELINE_SIZE		/* Cache Line Size	*/

	/*
	 * Fix GOT pointer:
	 *
	 * New GOT-PTR = (old GOT-PTR - CONFIG_SYS_MONITOR_BASE) + Destination Address
	 *
	 * Offset:
	 */
	sub	r15,r10,r4

	/* First our own GOT */
	add	r12,r12,r15
	/* the the one used by the C code */
	add	r30,r30,r15

	/*
	 * Now relocate code
	 */

	cmplw	cr1,r3,r4
	addi	r0,r5,3
	srwi.	r0,r0,2
	beq	cr1,4f		/* In place copy is not necessary	*/
	beq	7f		/* Protect against 0 count		*/
	mtctr	r0
	bge	cr1,2f

	la	r8,-4(r4)
	la	r7,-4(r3)
1:	lwzu	r0,4(r8)
	stwu	r0,4(r7)
	bdnz	1b
	b	4f

2:	slwi	r0,r0,2
	add	r8,r4,r0
	add	r7,r3,r0
3:	lwzu	r0,-4(r8)
	stwu	r0,-4(r7)
	bdnz	3b

/*
 * Now flush the cache: note that we must start from a cache aligned
 * address. Otherwise we might miss one cache line.
 */
4:	cmpwi	r6,0
	add	r5,r3,r5
	beq	7f		/* Always flush prefetch queue in any case */
	subi	r0,r6,1
	andc	r3,r3,r0
	mr	r4,r3
5:	dcbst	0,r4
	add	r4,r4,r6
	cmplw	r4,r5
	blt	5b
	sync			/* Wait for all dcbst to complete on bus */
	mr	r4,r3
6:	icbi	0,r4
	add	r4,r4,r6
	cmplw	r4,r5
	blt	6b
7:	sync			/* Wait for all icbi to complete on bus */
	isync

/*
 * We are done. Do not return, instead branch to second part of board
 * initialization, now running from RAM.
 */

	addi	r0,r10,in_ram - _start + _START_OFFSET

	/*
	 * As IVPR is going to point RAM address,
	 * Make sure IVOR15 has valid opcode to support debugger
	 */
	mtspr	IVOR15,r0

	/*
	 * Re-point the IVPR at RAM
	 */
	mtspr	IVPR,r10

	mtlr	r0
	blr				/* NEVER RETURNS! */
	.globl	in_ram
in_ram:

	/*
	 * Relocation Function, r12 point to got2+0x8000
	 *
	 * Adjust got2 pointers, no need to check for 0, this code
	 * already puts a few entries in the table.
	 */
	li	r0,__got2_entries@sectoff@l
	la	r3,GOT(_GOT2_TABLE_)
	lwz	r11,GOT(_GOT2_TABLE_)
	mtctr	r0
	sub	r11,r3,r11
	addi	r3,r3,-4
1:	lwzu	r0,4(r3)
	cmpwi	r0,0
	beq-	2f
	add	r0,r0,r11
	stw	r0,0(r3)
2:	bdnz	1b

	/*
	 * Now adjust the fixups and the pointers to the fixups
	 * in case we need to move ourselves again.
	 */
	li	r0,__fixup_entries@sectoff@l
	lwz	r3,GOT(_FIXUP_TABLE_)
	cmpwi	r0,0
	mtctr	r0
	addi	r3,r3,-4
	beq	4f
3:	lwzu	r4,4(r3)
	lwzux	r0,r4,r11
	cmpwi	r0,0
	add	r0,r0,r11
	stw	r4,0(r3)
	beq-	5f
	stw	r0,0(r4)
5:	bdnz	3b
4:
clear_bss:
	/*
	 * Now clear BSS segment
	 */
	lwz	r3,GOT(__bss_start)
	lwz	r4,GOT(__bss_end__)

	cmplw	0,r3,r4
	beq	6f

	li	r0,0
5:
	stw	r0,0(r3)
	addi	r3,r3,4
	cmplw	0,r3,r4
	bne	5b
6:

	mr	r3,r9		/* Init Data pointer		*/
	mr	r4,r10		/* Destination Address		*/
	bl	board_init_r

#ifndef CONFIG_NAND_SPL
	/*
	 * Copy exception vector code to low memory
	 *
	 * r3: dest_addr
	 * r7: source address, r8: end address, r9: target address
	 */
	.globl	trap_init
trap_init:
	mflr	r4			/* save link register		*/
	GET_GOT
	lwz	r7,GOT(_start_of_vectors)
	lwz	r8,GOT(_end_of_vectors)

	li	r9,0x100		/* reset vector always at 0x100 */

	cmplw	0,r7,r8
	bgelr				/* return if r7>=r8 - just in case */
1:
	lwz	r0,0(r7)
	stw	r0,0(r9)
	addi	r7,r7,4
	addi	r9,r9,4
	cmplw	0,r7,r8
	bne	1b

	/*
	 * relocate `hdlr' and `int_return' entries
	 */
	li	r7,.L_CriticalInput - _start + _START_OFFSET
	bl	trap_reloc
	li	r7,.L_MachineCheck - _start + _START_OFFSET
	bl	trap_reloc
	li	r7,.L_DataStorage - _start + _START_OFFSET
	bl	trap_reloc
	li	r7,.L_InstStorage - _start + _START_OFFSET
	bl	trap_reloc
	li	r7,.L_ExtInterrupt - _start + _START_OFFSET
	bl	trap_reloc
	li	r7,.L_Alignment - _start + _START_OFFSET
	bl	trap_reloc
	li	r7,.L_ProgramCheck - _start + _START_OFFSET
	bl	trap_reloc
	li	r7,.L_FPUnavailable - _start + _START_OFFSET
	bl	trap_reloc
	li	r7,.L_Decrementer - _start + _START_OFFSET
	bl	trap_reloc
	li	r7,.L_IntervalTimer - _start + _START_OFFSET
	li	r8,_end_of_vectors - _start + _START_OFFSET
2:
	bl	trap_reloc
	addi	r7,r7,0x100		/* next exception vector	*/
	cmplw	0,r7,r8
	blt	2b

	/* Update IVORs as per relocated vector table address */
	li	r7,0x0100
	mtspr	IVOR0,r7	/* 0: Critical input */
	li	r7,0x0200
	mtspr	IVOR1,r7	/* 1: Machine check */
	li	r7,0x0300
	mtspr	IVOR2,r7	/* 2: Data storage */
	li	r7,0x0400
	mtspr	IVOR3,r7	/* 3: Instruction storage */
	li	r7,0x0500
	mtspr	IVOR4,r7	/* 4: External interrupt */
	li	r7,0x0600
	mtspr	IVOR5,r7	/* 5: Alignment */
	li	r7,0x0700
	mtspr	IVOR6,r7	/* 6: Program check */
	li	r7,0x0800
	mtspr	IVOR7,r7	/* 7: floating point unavailable */
	li	r7,0x0900
	mtspr	IVOR8,r7	/* 8: System call */
	/* 9: Auxiliary processor unavailable(unsupported) */
	li	r7,0x0a00
	mtspr	IVOR10,r7	/* 10: Decrementer */
	li	r7,0x0b00
	mtspr	IVOR11,r7	/* 11: Interval timer */
	li	r7,0x0c00
	mtspr	IVOR12,r7	/* 12: Watchdog timer */
	li	r7,0x0d00
	mtspr	IVOR13,r7	/* 13: Data TLB error */
	li	r7,0x0e00
	mtspr	IVOR14,r7	/* 14: Instruction TLB error */
	li	r7,0x0f00
	mtspr	IVOR15,r7	/* 15: Debug */

	lis	r7,0x0
	mtspr	IVPR,r7

	mtlr	r4			/* restore link register	*/
	blr

.globl unlock_ram_in_cache
unlock_ram_in_cache:
	/* invalidate the INIT_RAM section */
	lis	r3,(CONFIG_SYS_INIT_RAM_ADDR & ~(CONFIG_SYS_CACHELINE_SIZE-1))@h
	ori	r3,r3,(CONFIG_SYS_INIT_RAM_ADDR & ~(CONFIG_SYS_CACHELINE_SIZE-1))@l
	mfspr	r4,L1CFG0
	andi.	r4,r4,0x1ff
	slwi	r4,r4,(10 - 1 - L1_CACHE_SHIFT)
	mtctr	r4
1:	dcbi	r0,r3
	addi	r3,r3,CONFIG_SYS_CACHELINE_SIZE
	bdnz	1b
	sync

	/* Invalidate the TLB entries for the cache */
	lis	r3,CONFIG_SYS_INIT_RAM_ADDR@h
	ori	r3,r3,CONFIG_SYS_INIT_RAM_ADDR@l
	tlbivax	0,r3
	addi	r3,r3,0x1000
	tlbivax	0,r3
	addi	r3,r3,0x1000
	tlbivax	0,r3
	addi	r3,r3,0x1000
	tlbivax	0,r3
	isync
	blr

.globl flush_dcache
flush_dcache:
	mfspr	r3,SPRN_L1CFG0

	rlwinm	r5,r3,9,3	/* Extract cache block size */
	twlgti	r5,1		/* Only 32 and 64 byte cache blocks
				 * are currently defined.
				 */
	li	r4,32
	subfic	r6,r5,2		/* r6 = log2(1KiB / cache block size) -
				 *      log2(number of ways)
				 */
	slw	r5,r4,r5	/* r5 = cache block size */

	rlwinm	r7,r3,0,0xff	/* Extract number of KiB in the cache */
	mulli	r7,r7,13	/* An 8-way cache will require 13
				 * loads per set.
				 */
	slw	r7,r7,r6

	/* save off HID0 and set DCFA */
	mfspr	r8,SPRN_HID0
	ori	r9,r8,HID0_DCFA@l
	mtspr	SPRN_HID0,r9
	isync

	lis	r4,0
	mtctr	r7

1:	lwz	r3,0(r4)	/* Load... */
	add	r4,r4,r5
	bdnz	1b

	msync
	lis	r4,0
	mtctr	r7

1:	dcbf	0,r4		/* ...and flush. */
	add	r4,r4,r5
	bdnz	1b

	/* restore HID0 */
	mtspr	SPRN_HID0,r8
	isync

	blr

.globl setup_ivors
setup_ivors:

#include "fixed_ivor.S"
	blr
#endif /* !CONFIG_NAND_SPL */