summaryrefslogtreecommitdiffstats
path: root/arch/frv/kernel/setup.c
blob: d96a57e5f030a93f4f57b5181d4146a6472a65d0 (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
/* setup.c: FRV specific setup
 *
 * Copyright (C) 2003-5 Red Hat, Inc. All Rights Reserved.
 * Written by David Howells (dhowells@redhat.com)
 * - Derived from arch/m68k/kernel/setup.c
 *
 * 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.
 */

#include <linux/utsrelease.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/fs.h>
#include <linux/mm.h>
#include <linux/fb.h>
#include <linux/console.h>
#include <linux/genhd.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/major.h>
#include <linux/bootmem.h>
#include <linux/highmem.h>
#include <linux/seq_file.h>
#include <linux/serial.h>
#include <linux/serial_core.h>
#include <linux/serial_reg.h>

#include <asm/setup.h>
#include <asm/serial.h>
#include <asm/irq.h>
#include <asm/sections.h>
#include <asm/pgalloc.h>
#include <asm/busctl-regs.h>
#include <asm/serial-regs.h>
#include <asm/timer-regs.h>
#include <asm/irc-regs.h>
#include <asm/spr-regs.h>
#include <asm/mb-regs.h>
#include <asm/mb93493-regs.h>
#include <asm/gdb-stub.h>
#include <asm/io.h>

#ifdef CONFIG_BLK_DEV_INITRD
#include <linux/blk.h>
#include <asm/pgtable.h>
#endif

#include "local.h"

#ifdef CONFIG_MB93090_MB00
static void __init mb93090_display(void);
#endif
#ifdef CONFIG_MMU
static void __init setup_linux_memory(void);
#else
static void __init setup_uclinux_memory(void);
#endif

#ifdef CONFIG_CONSOLE
extern struct consw *conswitchp;
#endif

#ifdef CONFIG_MB93090_MB00
static char __initdata mb93090_banner[] = "FJ/RH FR-V Linux";
static char __initdata mb93090_version[] = UTS_RELEASE;

int __nongprelbss mb93090_mb00_detected;
#endif

const char __frv_unknown_system[] = "unknown";
const char __frv_mb93091_cb10[] = "mb93091-cb10";
const char __frv_mb93091_cb11[] = "mb93091-cb11";
const char __frv_mb93091_cb30[] = "mb93091-cb30";
const char __frv_mb93091_cb41[] = "mb93091-cb41";
const char __frv_mb93091_cb60[] = "mb93091-cb60";
const char __frv_mb93091_cb70[] = "mb93091-cb70";
const char __frv_mb93091_cb451[] = "mb93091-cb451";
const char __frv_mb93090_mb00[] = "mb93090-mb00";

const char __frv_mb93493[] = "mb93493";

const char __frv_mb93093[] = "mb93093";

static const char *__nongprelbss cpu_series;
static const char *__nongprelbss cpu_core;
static const char *__nongprelbss cpu_silicon;
static const char *__nongprelbss cpu_mmu;
static const char *__nongprelbss cpu_system;
static const char *__nongprelbss cpu_board1;
static const char *__nongprelbss cpu_board2;

static unsigned long __nongprelbss cpu_psr_all;
static unsigned long __nongprelbss cpu_hsr0_all;

unsigned long __nongprelbss pdm_suspend_mode;

unsigned long __nongprelbss rom_length;
unsigned long __nongprelbss memory_start;
unsigned long __nongprelbss memory_end;

unsigned long __nongprelbss dma_coherent_mem_start;
unsigned long __nongprelbss dma_coherent_mem_end;

unsigned long __initdata __sdram_old_base;
unsigned long __initdata num_mappedpages;

struct cpuinfo_frv __nongprelbss boot_cpu_data;

char command_line[COMMAND_LINE_SIZE];
char __initdata redboot_command_line[COMMAND_LINE_SIZE];

#ifdef CONFIG_PM
#define __pminit
#define __pminitdata
#else
#define __pminit __init
#define __pminitdata __initdata
#endif

struct clock_cmode {
	uint8_t	xbus, sdram, corebus, core, dsu;
};

#define _frac(N,D) ((N)<<4 | (D))
#define _x0_16	_frac(1,6)
#define _x0_25	_frac(1,4)
#define _x0_33	_frac(1,3)
#define _x0_375	_frac(3,8)
#define _x0_5	_frac(1,2)
#define _x0_66	_frac(2,3)
#define _x0_75	_frac(3,4)
#define _x1	_frac(1,1)
#define _x1_5	_frac(3,2)
#define _x2	_frac(2,1)
#define _x3	_frac(3,1)
#define _x4	_frac(4,1)
#define _x4_5	_frac(9,2)
#define _x6	_frac(6,1)
#define _x8	_frac(8,1)
#define _x9	_frac(9,1)

int __nongprelbss clock_p0_current;
int __nongprelbss clock_cm_current;
int __nongprelbss clock_cmode_current;
#ifdef CONFIG_PM
int __nongprelbss clock_cmodes_permitted;
unsigned long __nongprelbss clock_bits_settable;
#endif

static struct clock_cmode __pminitdata undef_clock_cmode = { _x1, _x1, _x1, _x1, _x1 };

static struct clock_cmode __pminitdata clock_cmodes_fr401_fr403[16] = {
	[4]	= {	_x1,	_x1,	_x2,	_x2,	_x0_25	},
	[5]	= { 	_x1,	_x2,	_x4,	_x4,	_x0_5	},
	[8]	= { 	_x1,	_x1,	_x1,	_x2,	_x0_25	},
	[9]	= { 	_x1,	_x2,	_x2,	_x4,	_x0_5	},
	[11]	= { 	_x1,	_x4,	_x4,	_x8,	_x1	},
	[12]	= { 	_x1,	_x1,	_x2,	_x4,	_x0_5	},
	[13]	= { 	_x1,	_x2,	_x4,	_x8,	_x1	},
};

static struct clock_cmode __pminitdata clock_cmodes_fr405[16] = {
	[0]	= {	_x1,	_x1,	_x1,	_x1,	_x0_5	},
	[1]	= {	_x1,	_x1,	_x1,	_x3,	_x0_25	},
	[2]	= {	_x1,	_x1,	_x2,	_x6,	_x0_5	},
	[3]	= {	_x1,	_x2,	_x2,	_x6,	_x0_5	},
	[4]	= {	_x1,	_x1,	_x2,	_x2,	_x0_16	},
	[8]	= { 	_x1,	_x1,	_x1,	_x2,	_x0_16	},
	[9]	= { 	_x1,	_x2,	_x2,	_x4,	_x0_33	},
	[12]	= { 	_x1,	_x1,	_x2,	_x4,	_x0_33	},
	[14]	= { 	_x1,	_x3,	_x3,	_x9,	_x0_75	},
	[15]	= { 	_x1,	_x1_5,	_x1_5,	_x4_5,	_x0_375	},

#define CLOCK_CMODES_PERMITTED_FR405 0xd31f
};

static struct clock_cmode __pminitdata clock_cmodes_fr555[16] = {
	[0]	= {	_x1,	_x2,	_x2,	_x4,	_x0_33	},
	[1]	= {	_x1,	_x3,	_x3,	_x6,	_x0_5	},
	[2]	= {	_x1,	_x2,	_x4,	_x8,	_x0_66	},
	[3]	= {	_x1,	_x1_5,	_x3,	_x6,	_x0_5	},
	[4]	= {	_x1,	_x3,	_x3,	_x9,	_x0_75	},
	[5]	= {	_x1,	_x2,	_x2,	_x6,	_x0_5	},
	[6]	= {	_x1,	_x1_5,	_x1_5,	_x4_5,	_x0_375	},
};

static const struct clock_cmode __pminitdata *clock_cmodes;
static int __pminitdata clock_doubled;

static struct uart_port __initdata __frv_uart0 = {
	.uartclk		= 0,
	.membase		= (char *) UART0_BASE,
	.irq			= IRQ_CPU_UART0,
	.regshift		= 3,
	.iotype			= UPIO_MEM,
	.flags			= UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
};

static struct uart_port __initdata __frv_uart1 = {
	.uartclk		= 0,
	.membase		= (char *) UART1_BASE,
	.irq			= IRQ_CPU_UART1,
	.regshift		= 3,
	.iotype			= UPIO_MEM,
	.flags			= UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
};

#if 0
static void __init printk_xampr(unsigned long ampr, unsigned long amlr, char i_d, int n)
{
	unsigned long phys, virt, cxn, size;

#ifdef CONFIG_MMU
	virt = amlr & 0xffffc000;
	cxn = amlr & 0x3fff;
#else
	virt = ampr & 0xffffc000;
	cxn = 0;
#endif
	phys = ampr & xAMPRx_PPFN;
	size = 1 << (((ampr & xAMPRx_SS) >> 4) + 17);

	printk("%cAMPR%d: va %08lx-%08lx [pa %08lx] %c%c%c%c [cxn:%04lx]\n",
	       i_d, n,
	       virt, virt + size - 1,
	       phys,
	       ampr & xAMPRx_S  ? 'S' : '-',
	       ampr & xAMPRx_C  ? 'C' : '-',
	       ampr & DAMPRx_WP ? 'W' : '-',
	       ampr & xAMPRx_V  ? 'V' : '-',
	       cxn
	       );
}
#endif

/*****************************************************************************/
/*
 * dump the memory map
 */
static void __init dump_memory_map(void)
{

#if 0
	/* dump the protection map */
	printk_xampr(__get_IAMPR(0),  __get_IAMLR(0),  'I', 0);
	printk_xampr(__get_IAMPR(1),  __get_IAMLR(1),  'I', 1);
	printk_xampr(__get_IAMPR(2),  __get_IAMLR(2),  'I', 2);
	printk_xampr(__get_IAMPR(3),  __get_IAMLR(3),  'I', 3);
	printk_xampr(__get_IAMPR(4),  __get_IAMLR(4),  'I', 4);
	printk_xampr(__get_IAMPR(5),  __get_IAMLR(5),  'I', 5);
	printk_xampr(__get_IAMPR(6),  __get_IAMLR(6),  'I', 6);
	printk_xampr(__get_IAMPR(7),  __get_IAMLR(7),  'I', 7);
	printk_xampr(__get_IAMPR(8),  __get_IAMLR(8),  'I', 8);
	printk_xampr(__get_IAMPR(9),  __get_IAMLR(9),  'i', 9);
	printk_xampr(__get_IAMPR(10), __get_IAMLR(10), 'I', 10);
	printk_xampr(__get_IAMPR(11), __get_IAMLR(11), 'I', 11);
	printk_xampr(__get_IAMPR(12), __get_IAMLR(12), 'I', 12);
	printk_xampr(__get_IAMPR(13), __get_IAMLR(13), 'I', 13);
	printk_xampr(__get_IAMPR(14), __get_IAMLR(14), 'I', 14);
	printk_xampr(__get_IAMPR(15), __get_IAMLR(15), 'I', 15);

	printk_xampr(__get_DAMPR(0),  __get_DAMLR(0),  'D', 0);
	printk_xampr(__get_DAMPR(1),  __get_DAMLR(1),  'D', 1);
	printk_xampr(__get_DAMPR(2),  __get_DAMLR(2),  'D', 2);
	printk_xampr(__get_DAMPR(3),  __get_DAMLR(3),  'D', 3);
	printk_xampr(__get_DAMPR(4),  __get_DAMLR(4),  'D', 4);
	printk_xampr(__get_DAMPR(5),  __get_DAMLR(5),  'D', 5);
	printk_xampr(__get_DAMPR(6),  __get_DAMLR(6),  'D', 6);
	printk_xampr(__get_DAMPR(7),  __get_DAMLR(7),  'D', 7);
	printk_xampr(__get_DAMPR(8),  __get_DAMLR(8),  'D', 8);
	printk_xampr(__get_DAMPR(9),  __get_DAMLR(9),  'D', 9);
	printk_xampr(__get_DAMPR(10), __get_DAMLR(10), 'D', 10);
	printk_xampr(__get_DAMPR(11), __get_DAMLR(11), 'D', 11);
	printk_xampr(__get_DAMPR(12), __get_DAMLR(12), 'D', 12);
	printk_xampr(__get_DAMPR(13), __get_DAMLR(13), 'D', 13);
	printk_xampr(__get_DAMPR(14), __get_DAMLR(14), 'D', 14);
	printk_xampr(__get_DAMPR(15), __get_DAMLR(15), 'D', 15);
#endif

#if 0
	/* dump the bus controller registers */
	printk("LGCR: %08lx\n", __get_LGCR());
	printk("Master: %08lx-%08lx CR=%08lx\n",
	       __get_LEMBR(), __get_LEMBR() + __get_LEMAM(),
	       __get_LMAICR());

	int loop;
	for (loop = 1; loop <= 7; loop++) {
		unsigned long lcr = __get_LCR(loop), lsbr = __get_LSBR(loop);
		printk("CS#%d: %08lx-%08lx %c%c%c%c%c%c%c%c%c\n",
		       loop,
		       lsbr, lsbr + __get_LSAM(loop),
		       lcr & 0x80000000 ? 'r' : '-',
		       lcr & 0x40000000 ? 'w' : '-',
		       lcr & 0x08000000 ? 'b' : '-',
		       lcr & 0x04000000 ? 'B' : '-',
		       lcr & 0x02000000 ? 'C' : '-',
		       lcr & 0x01000000 ? 'D' : '-',
		       lcr & 0x00800000 ? 'W' : '-',
		       lcr & 0x00400000 ? 'R' : '-',
		       (lcr & 0x00030000) == 0x00000000 ? '4' :
		       (lcr & 0x00030000) == 0x00010000 ? '2' :
		       (lcr & 0x00030000) == 0x00020000 ? '1' :
		       '-'
		       );
	}
#endif

#if 0
	printk("\n");
#endif
} /* end dump_memory_map() */

/*****************************************************************************/
/*
 * attempt to detect a VDK motherboard and DAV daughter board on an MB93091 system
 */
#ifdef CONFIG_MB93091_VDK
static void __init detect_mb93091(void)
{
#ifdef CONFIG_MB93090_MB00
	/* Detect CB70 without motherboard */
	if (!(cpu_system == __frv_mb93091_cb70 && ((*(unsigned short *)0xffc00030) & 0x100))) {
		cpu_board1 = __frv_mb93090_mb00;
		mb93090_mb00_detected = 1;
	}
#endif

#ifdef CONFIG_FUJITSU_MB93493
	cpu_board2 = __frv_mb93493;
#endif

} /* end detect_mb93091() */
#endif

/*****************************************************************************/
/*
 * determine the CPU type and set appropriate parameters
 *
 * Family     Series      CPU Core    Silicon    Imple  Vers
 * ----------------------------------------------------------
 * FR-V --+-> FR400 --+-> FR401 --+-> MB93401     02     00 [1]
 *        |           |           |
 *        |           |           +-> MB93401/A   02     01
 *        |           |           |
 *        |           |           +-> MB93403     02     02
 *        |           |
 *        |           +-> FR405 ----> MB93405     04     00
 *        |
 *        +-> FR450 ----> FR451 ----> MB93451     05     00
 *        |
 *        +-> FR500 ----> FR501 --+-> MB93501     01     01 [2]
 *        |                       |
 *        |                       +-> MB93501/A   01     02
 *        |
 *        +-> FR550 --+-> FR551 ----> MB93555     03     01
 *
 *  [1] The MB93401 is an obsolete CPU replaced by the MB93401A
 *  [2] The MB93501 is an obsolete CPU replaced by the MB93501A
 *
 * Imple is PSR(Processor Status Register)[31:28].
 * Vers is PSR(Processor Status Register)[27:24].
 *
 * A "Silicon" consists of CPU core and some on-chip peripherals.
 */
static void __init determine_cpu(void)
{
	unsigned long hsr0 = __get_HSR(0);
	unsigned long psr = __get_PSR();

	/* work out what selectable services the CPU supports */
	__set_PSR(psr | PSR_EM | PSR_EF | PSR_CM | PSR_NEM);
	cpu_psr_all = __get_PSR();
	__set_PSR(psr);

	__set_HSR(0, hsr0 | HSR0_GRLE | HSR0_GRHE | HSR0_FRLE | HSR0_FRHE);
	cpu_hsr0_all = __get_HSR(0);
	__set_HSR(0, hsr0);

	/* derive other service specs from the CPU type */
	cpu_series		= "unknown";
	cpu_core		= "unknown";
	cpu_silicon		= "unknown";
	cpu_mmu			= "Prot";
	cpu_system		= __frv_unknown_system;
	clock_cmodes		= NULL;
	clock_doubled		= 0;
#ifdef CONFIG_PM
	clock_bits_settable	= CLOCK_BIT_CM_H | CLOCK_BIT_CM_M | CLOCK_BIT_P0;
#endif

	switch (PSR_IMPLE(psr)) {
	case PSR_IMPLE_FR401:
		cpu_series	= "fr400";
		cpu_core	= "fr401";
		pdm_suspend_mode = HSR0_PDM_PLL_RUN;

		switch (PSR_VERSION(psr)) {
		case PSR_VERSION_FR401_MB93401:
			cpu_silicon	= "mb93401";
			cpu_system	= __frv_mb93091_cb10;
			clock_cmodes	= clock_cmodes_fr401_fr403;
			clock_doubled	= 1;
			break;
		case PSR_VERSION_FR401_MB93401A:
			cpu_silicon	= "mb93401/A";
			cpu_system	= __frv_mb93091_cb11;
			clock_cmodes	= clock_cmodes_fr401_fr403;
			break;
		case PSR_VERSION_FR401_MB93403:
			cpu_silicon	= "mb93403";
#ifndef CONFIG_MB93093_PDK
			cpu_system	= __frv_mb93091_cb30;
#else
			cpu_system	= __frv_mb93093;
#endif
			clock_cmodes	= clock_cmodes_fr401_fr403;
			break;
		default:
			break;
		}
		break;

	case PSR_IMPLE_FR405:
		cpu_series	= "fr400";
		cpu_core	= "fr405";
		pdm_suspend_mode = HSR0_PDM_PLL_STOP;

		switch (PSR_VERSION(psr)) {
		case PSR_VERSION_FR405_MB93405:
			cpu_silicon	= "mb93405";
			cpu_system	= __frv_mb93091_cb60;
			clock_cmodes	= clock_cmodes_fr405;
#ifdef CONFIG_PM
			clock_bits_settable |= CLOCK_BIT_CMODE;
			clock_cmodes_permitted = CLOCK_CMODES_PERMITTED_FR405;
#endif

			/* the FPGA on the CB70 has extra registers
			 * - it has 0x0046 in the VDK_ID FPGA register at 0x1a0, which is
			 *   how we tell the difference between it and a CB60
			 */
			if (*(volatile unsigned short *) 0xffc001a0 == 0x0046)
				cpu_system = __frv_mb93091_cb70;
			break;
		default:
			break;
		}
		break;

	case PSR_IMPLE_FR451:
		cpu_series	= "fr450";
		cpu_core	= "fr451";
		pdm_suspend_mode = HSR0_PDM_PLL_STOP;
#ifdef CONFIG_PM
		clock_bits_settable |= CLOCK_BIT_CMODE;
		clock_cmodes_permitted = CLOCK_CMODES_PERMITTED_FR405;
#endif
		switch (PSR_VERSION(psr)) {
		case PSR_VERSION_FR451_MB93451:
			cpu_silicon	= "mb93451";
			cpu_mmu		= "Prot, SAT, xSAT, DAT";
			cpu_system	= __frv_mb93091_cb451;
			clock_cmodes	= clock_cmodes_fr405;
			break;
		default:
			break;
		}
		break;

	case PSR_IMPLE_FR501:
		cpu_series	= "fr500";
		cpu_core	= "fr501";
		pdm_suspend_mode = HSR0_PDM_PLL_STOP;

		switch (PSR_VERSION(psr)) {
		case PSR_VERSION_FR501_MB93501:  cpu_silicon = "mb93501";   break;
		case PSR_VERSION_FR501_MB93501A: cpu_silicon = "mb93501/A"; break;
		default:
			break;
		}
		break;

	case PSR_IMPLE_FR551:
		cpu_series	= "fr550";
		cpu_core	= "fr551";
		pdm_suspend_mode = HSR0_PDM_PLL_RUN;

		switch (PSR_VERSION(psr)) {
		case PSR_VERSION_FR551_MB93555:
			cpu_silicon	= "mb93555";
			cpu_mmu		= "Prot, SAT";
			cpu_system	= __frv_mb93091_cb41;
			clock_cmodes	= clock_cmodes_fr555;
			clock_doubled	= 1;
			break;
		default:
			break;
		}
		break;

	default:
		break;
	}

	printk("- Series:%s CPU:%s Silicon:%s\n",
	       cpu_series, cpu_core, cpu_silicon);

#ifdef CONFIG_MB93091_VDK
	detect_mb93091();
#endif

#if defined(CONFIG_MB93093_PDK) && defined(CONFIG_FUJITSU_MB93493)
	cpu_board2 = __frv_mb93493;
#endif

} /* end determine_cpu() */

/*****************************************************************************/
/*
 * calculate the bus clock speed
 */
void __pminit determine_clocks(int verbose)
{
	const struct clock_cmode *mode, *tmode;
	unsigned long clkc, psr, quot;

	clkc = __get_CLKC();
	psr = __get_PSR();

	clock_p0_current = !!(clkc & CLKC_P0);
	clock_cm_current = clkc & CLKC_CM;
	clock_cmode_current = (clkc & CLKC_CMODE) >> CLKC_CMODE_s;

	if (verbose)
		printk("psr=%08lx hsr0=%08lx clkc=%08lx\n", psr, __get_HSR(0), clkc);

	/* the CB70 has some alternative ways of setting the clock speed through switches accessed
	 * through the FPGA.  */
	if (cpu_system == __frv_mb93091_cb70) {
		unsigned short clkswr = *(volatile unsigned short *) 0xffc00104UL & 0x1fffUL;

		if (clkswr & 0x1000)
			__clkin_clock_speed_HZ = 60000000UL;
		else
			__clkin_clock_speed_HZ =
				((clkswr >> 8) & 0xf) * 10000000 +
				((clkswr >> 4) & 0xf) * 1000000 +
				((clkswr     ) & 0xf) * 100000;
	}
	/* the FR451 is currently fixed at 24MHz */
	else if (cpu_system == __frv_mb93091_cb451) {
		//__clkin_clock_speed_HZ = 24000000UL; // CB451-FPGA
		unsigned short clkswr = *(volatile unsigned short *) 0xffc00104UL & 0x1fffUL;

		if (clkswr & 0x1000)
			__clkin_clock_speed_HZ = 60000000UL;
		else
			__clkin_clock_speed_HZ =
				((clkswr >> 8) & 0xf) * 10000000 +
				((clkswr >> 4) & 0xf) * 1000000 +
				((clkswr     ) & 0xf) * 100000;
	}
	/* otherwise determine the clockspeed from VDK or other registers */
	else {
		__clkin_clock_speed_HZ = __get_CLKIN();
	}

	/* look up the appropriate clock relationships table entry */
	mode = &undef_clock_cmode;
	if (clock_cmodes) {
		tmode = &clock_cmodes[(clkc & CLKC_CMODE) >> CLKC_CMODE_s];
		if (tmode->xbus)
			mode = tmode;
	}

#define CLOCK(SRC,RATIO) ((SRC) * (((RATIO) >> 4) & 0x0f) / ((RATIO) & 0x0f))

	if (clock_doubled)
		__clkin_clock_speed_HZ <<= 1;

	__ext_bus_clock_speed_HZ	= CLOCK(__clkin_clock_speed_HZ, mode->xbus);
	__sdram_clock_speed_HZ		= CLOCK(__clkin_clock_speed_HZ, mode->sdram);
	__dsu_clock_speed_HZ		= CLOCK(__clkin_clock_speed_HZ, mode->dsu);

	switch (clkc & CLKC_CM) {
	case 0: /* High */
		__core_bus_clock_speed_HZ	= CLOCK(__clkin_clock_speed_HZ, mode->corebus);
		__core_clock_speed_HZ		= CLOCK(__clkin_clock_speed_HZ, mode->core);
		break;
	case 1: /* Medium */
		__core_bus_clock_speed_HZ	= CLOCK(__clkin_clock_speed_HZ, mode->sdram);
		__core_clock_speed_HZ		= CLOCK(__clkin_clock_speed_HZ, mode->sdram);
		break;
	case 2: /* Low; not supported */
	case 3: /* UNDEF */
		printk("Unsupported CLKC CM %ld\n", clkc & CLKC_CM);
		panic("Bye");
	}

	__res_bus_clock_speed_HZ = __ext_bus_clock_speed_HZ;
	if (clkc & CLKC_P0)
		__res_bus_clock_speed_HZ >>= 1;

	if (verbose) {
		printk("CLKIN: %lu.%3.3luMHz\n",
		       __clkin_clock_speed_HZ / 1000000,
		       (__clkin_clock_speed_HZ / 1000) % 1000);

		printk("CLKS:"
		       " ext=%luMHz res=%luMHz sdram=%luMHz cbus=%luMHz core=%luMHz dsu=%luMHz\n",
		       __ext_bus_clock_speed_HZ / 1000000,
		       __res_bus_clock_speed_HZ / 1000000,
		       __sdram_clock_speed_HZ / 1000000,
		       __core_bus_clock_speed_HZ / 1000000,
		       __core_clock_speed_HZ / 1000000,
		       __dsu_clock_speed_HZ / 1000000
		       );
	}

	/* calculate the number of __delay() loop iterations per sec (2 insn loop) */
	__delay_loops_MHz = __core_clock_speed_HZ / (1000000 * 2);

	/* set the serial prescaler */
	__serial_clock_speed_HZ = __res_bus_clock_speed_HZ;
	quot = 1;
	while (__serial_clock_speed_HZ / quot / 16 / 65536 > 3000)
		quot += 1;

	/* double the divisor if P0 is clear, so that if/when P0 is set, it's still achievable
	 * - we have to be careful - dividing too much can mean we can't get 115200 baud
	 */
	if (__serial_clock_speed_HZ > 32000000 && !(clkc & CLKC_P0))
		quot <<= 1;

	__serial_clock_speed_HZ /= quot;
	__frv_uart0.uartclk = __serial_clock_speed_HZ;
	__frv_uart1.uartclk = __serial_clock_speed_HZ;

	if (verbose)
		printk("      uart=%luMHz\n", __serial_clock_speed_HZ / 1000000 * quot);

	while (!(__get_UART0_LSR() & UART_LSR_TEMT))
		continue;

	while (!(__get_UART1_LSR() & UART_LSR_TEMT))
		continue;

	__set_UCPVR(quot);
	__set_UCPSR(0);
} /* end determine_clocks() */

/*****************************************************************************/
/*
 * reserve some DMA consistent memory
 */
#ifdef CONFIG_RESERVE_DMA_COHERENT
static void __init reserve_dma_coherent(void)
{
	unsigned long ampr;

	/* find the first non-kernel memory tile and steal it */
#define __steal_AMPR(r)						\
	if (__get_DAMPR(r) & xAMPRx_V) {			\
		ampr = __get_DAMPR(r);				\
		__set_DAMPR(r, ampr | xAMPRx_S | xAMPRx_C);	\
		__set_IAMPR(r, 0);				\
		goto found;					\
	}

	__steal_AMPR(1);
	__steal_AMPR(2);
	__steal_AMPR(3);
	__steal_AMPR(4);
	__steal_AMPR(5);
	__steal_AMPR(6);

	if (PSR_IMPLE(__get_PSR()) == PSR_IMPLE_FR551) {
		__steal_AMPR(7);
		__steal_AMPR(8);
		__steal_AMPR(9);
		__steal_AMPR(10);
		__steal_AMPR(11);
		__steal_AMPR(12);
		__steal_AMPR(13);
		__steal_AMPR(14);
	}

	/* unable to grant any DMA consistent memory */
	printk("No DMA consistent memory reserved\n");
	return;

 found:
	dma_coherent_mem_start = ampr & xAMPRx_PPFN;
	ampr &= xAMPRx_SS;
	ampr >>= 4;
	ampr = 1 << (ampr - 3 + 20);
	dma_coherent_mem_end = dma_coherent_mem_start + ampr;

	printk("DMA consistent memory reserved %lx-%lx\n",
	       dma_coherent_mem_start, dma_coherent_mem_end);

} /* end reserve_dma_coherent() */
#endif

/*****************************************************************************/
/*
 * calibrate the delay loop
 */
void __init calibrate_delay(void)
{
	loops_per_jiffy = __delay_loops_MHz * (1000000 / HZ);

	printk("Calibrating delay loop... %lu.%02lu BogoMIPS\n",
	       loops_per_jiffy / (500000 / HZ),
	       (loops_per_jiffy / (5000 / HZ)) % 100);

} /* end calibrate_delay() */

/*****************************************************************************/
/*
 * look through the command line for some things we need to know immediately
 */
static void __init parse_cmdline_early(char *cmdline)
{
	if (!cmdline)
		return;

	while (*cmdline) {
		if (*cmdline == ' ')
			cmdline++;

		/* "mem=XXX[kKmM]" sets SDRAM size to <mem>, overriding the value we worked
		 * out from the SDRAM controller mask register
		 */
		if (!memcmp(cmdline, "mem=", 4)) {
			unsigned long long mem_size;

			mem_size = memparse(cmdline + 4, &cmdline);
			memory_end = memory_start + mem_size;
		}

		while (*cmdline && *cmdline != ' ')
			cmdline++;
	}

} /* end parse_cmdline_early() */

/*****************************************************************************/
/*
 *
 */
void __init setup_arch(char **cmdline_p)
{
#ifdef CONFIG_MMU
	printk("Linux FR-V port done by Red Hat Inc <dhowells@redhat.com>\n");
#else
	printk("uClinux FR-V port done by Red Hat Inc <dhowells@redhat.com>\n");
#endif

	memcpy(saved_command_line, redboot_command_line, COMMAND_LINE_SIZE);

	determine_cpu();
	determine_clocks(1);

	/* For printk-directly-beats-on-serial-hardware hack */
	console_set_baud(115200);
#ifdef CONFIG_GDBSTUB
	gdbstub_set_baud(115200);
#endif

#ifdef CONFIG_RESERVE_DMA_COHERENT
	reserve_dma_coherent();
#endif
	dump_memory_map();

#ifdef CONFIG_MB93090_MB00
	if (mb93090_mb00_detected)
		mb93090_display();
#endif

	/* register those serial ports that are available */
#ifdef CONFIG_FRV_ONCPU_SERIAL
#ifndef CONFIG_GDBSTUB_UART0
	__reg(UART0_BASE + UART_IER * 8) = 0;
	early_serial_setup(&__frv_uart0);
#endif
#ifndef CONFIG_GDBSTUB_UART1
	__reg(UART1_BASE + UART_IER * 8) = 0;
	early_serial_setup(&__frv_uart1);
#endif
#endif

#if defined(CONFIG_CHR_DEV_FLASH) || defined(CONFIG_BLK_DEV_FLASH)
	/* we need to initialize the Flashrom device here since we might
	 * do things with flash early on in the boot
	 */
	flash_probe();
#endif

	/* deal with the command line - RedBoot may have passed one to the kernel */
	memcpy(command_line, saved_command_line, sizeof(command_line));
	*cmdline_p = &command_line[0];
	parse_cmdline_early(command_line);

	/* set up the memory description
	 * - by now the stack is part of the init task */
	printk("Memory %08lx-%08lx\n", memory_start, memory_end);

	BUG_ON(memory_start == memory_end);

	init_mm.start_code = (unsigned long) &_stext;
	init_mm.end_code = (unsigned long) &_etext;
	init_mm.end_data = (unsigned long) &_edata;
#if 0 /* DAVIDM - don't set brk just incase someone decides to use it */
	init_mm.brk = (unsigned long) &_end;
#else
	init_mm.brk = (unsigned long) 0;
#endif

#ifdef DEBUG
	printk("KERNEL -> TEXT=0x%06x-0x%06x DATA=0x%06x-0x%06x BSS=0x%06x-0x%06x\n",
	       (int) &_stext, (int) &_etext,
	       (int) &_sdata, (int) &_edata,
	       (int) &_sbss, (int) &_ebss);
#endif

#ifdef CONFIG_VT
#if defined(CONFIG_VGA_CONSOLE)
        conswitchp = &vga_con;
#elif defined(CONFIG_DUMMY_CONSOLE)
        conswitchp = &dummy_con;
#endif
#endif

#ifdef CONFIG_BLK_DEV_BLKMEM
	ROOT_DEV = MKDEV(BLKMEM_MAJOR,0);
#endif
	/*rom_length = (unsigned long)&_flashend - (unsigned long)&_romvec;*/

#ifdef CONFIG_MMU
	setup_linux_memory();
#else
	setup_uclinux_memory();
#endif

	/* get kmalloc into gear */
	paging_init();

	/* init DMA */
	frv_dma_init();
#ifdef DEBUG
	printk("Done setup_arch\n");
#endif

	/* start the decrement timer running */
//	asm volatile("movgs %0,timerd" :: "r"(10000000));
//	__set_HSR(0, __get_HSR(0) | HSR0_ETMD);

} /* end setup_arch() */

#if 0
/*****************************************************************************/
/*
 *
 */
static int __devinit setup_arch_serial(void)
{
	/* register those serial ports that are available */
#ifndef CONFIG_GDBSTUB_UART0
	early_serial_setup(&__frv_uart0);
#endif
#ifndef CONFIG_GDBSTUB_UART1
	early_serial_setup(&__frv_uart1);
#endif

	return 0;
} /* end setup_arch_serial() */

late_initcall(setup_arch_serial);
#endif

/*****************************************************************************/
/*
 * set up the memory map for normal MMU linux
 */
#ifdef CONFIG_MMU
static void __init setup_linux_memory(void)
{
	unsigned long bootmap_size, low_top_pfn, kstart, kend, high_mem;

	kstart	= (unsigned long) &__kernel_image_start - PAGE_OFFSET;
	kend	= (unsigned long) &__kernel_image_end - PAGE_OFFSET;

	kstart = kstart & PAGE_MASK;
	kend = (kend + PAGE_SIZE - 1) & PAGE_MASK;

	/* give all the memory to the bootmap allocator,  tell it to put the
	 * boot mem_map immediately following the kernel image
	 */
	bootmap_size = init_bootmem_node(NODE_DATA(0),
					 kend >> PAGE_SHIFT,		/* map addr */
					 memory_start >> PAGE_SHIFT,	/* start of RAM */
					 memory_end >> PAGE_SHIFT	/* end of RAM */
					 );

	/* pass the memory that the kernel can immediately use over to the bootmem allocator */
	max_mapnr = num_physpages = (memory_end - memory_start) >> PAGE_SHIFT;
	low_top_pfn = (KERNEL_LOWMEM_END - KERNEL_LOWMEM_START) >> PAGE_SHIFT;
	high_mem = 0;

	if (num_physpages > low_top_pfn) {
#ifdef CONFIG_HIGHMEM
		high_mem = num_physpages - low_top_pfn;
#else
		max_mapnr = num_physpages = low_top_pfn;
#endif
	}
	else {
		low_top_pfn = num_physpages;
	}

	min_low_pfn = memory_start >> PAGE_SHIFT;
	max_low_pfn = low_top_pfn;
	max_pfn = memory_end >> PAGE_SHIFT;

	num_mappedpages = low_top_pfn;

	printk(KERN_NOTICE "%ldMB LOWMEM available.\n", low_top_pfn >> (20 - PAGE_SHIFT));

	free_bootmem(memory_start, low_top_pfn << PAGE_SHIFT);

#ifdef CONFIG_HIGHMEM
	if (high_mem)
		printk(KERN_NOTICE "%ldMB HIGHMEM available.\n", high_mem >> (20 - PAGE_SHIFT));
#endif

	/* take back the memory occupied by the kernel image and the bootmem alloc map */
	reserve_bootmem(kstart, kend - kstart + bootmap_size);

	/* reserve the memory occupied by the initial ramdisk */
#ifdef CONFIG_BLK_DEV_INITRD
	if (LOADER_TYPE && INITRD_START) {
		if (INITRD_START + INITRD_SIZE <= (low_top_pfn << PAGE_SHIFT)) {
			reserve_bootmem(INITRD_START, INITRD_SIZE);
			initrd_start = INITRD_START ? INITRD_START + PAGE_OFFSET : 0;
			initrd_end = initrd_start + INITRD_SIZE;
		}
		else {
			printk(KERN_ERR
			       "initrd extends beyond end of memory (0x%08lx > 0x%08lx)\n"
			       "disabling initrd\n",
			       INITRD_START + INITRD_SIZE,
			       low_top_pfn << PAGE_SHIFT);
			initrd_start = 0;
		}
	}
#endif

} /* end setup_linux_memory() */
#endif

/*****************************************************************************/
/*
 * set up the memory map for uClinux
 */
#ifndef CONFIG_MMU
static void __init setup_uclinux_memory(void)
{
#ifdef CONFIG_PROTECT_KERNEL
	unsigned long dampr;
#endif
	unsigned long kend;
	int bootmap_size;

	kend = (unsigned long) &__kernel_image_end;
	kend = (kend + PAGE_SIZE - 1) & PAGE_MASK;

	/* give all the memory to the bootmap allocator,  tell it to put the
	 * boot mem_map immediately following the kernel image
	 */
	bootmap_size = init_bootmem_node(NODE_DATA(0),
					 kend >> PAGE_SHIFT,		/* map addr */
					 memory_start >> PAGE_SHIFT,	/* start of RAM */
					 memory_end >> PAGE_SHIFT	/* end of RAM */
					 );

	/* free all the usable memory */
	free_bootmem(memory_start, memory_end - memory_start);

	high_memory = (void *) (memory_end & PAGE_MASK);
	max_mapnr = num_physpages = ((unsigned long) high_memory - PAGE_OFFSET) >> PAGE_SHIFT;

	min_low_pfn = memory_start >> PAGE_SHIFT;
	max_low_pfn = memory_end >> PAGE_SHIFT;
	max_pfn = max_low_pfn;

	/* now take back the bits the core kernel is occupying */
#ifndef CONFIG_PROTECT_KERNEL
	reserve_bootmem(kend, bootmap_size);
	reserve_bootmem((unsigned long) &__kernel_image_start,
			kend - (unsigned long) &__kernel_image_start);

#else
	dampr = __get_DAMPR(0);
	dampr &= xAMPRx_SS;
	dampr = (dampr >> 4) + 17;
	dampr = 1 << dampr;

	reserve_bootmem(__get_DAMPR(0) & xAMPRx_PPFN, dampr);
#endif

	/* reserve some memory to do uncached DMA through if requested */
#ifdef CONFIG_RESERVE_DMA_COHERENT
	if (dma_coherent_mem_start)
		reserve_bootmem(dma_coherent_mem_start,
				dma_coherent_mem_end - dma_coherent_mem_start);
#endif

} /* end setup_uclinux_memory() */
#endif

/*****************************************************************************/
/*
 * get CPU information for use by procfs
 */
static int show_cpuinfo(struct seq_file *m, void *v)
{
	const char *gr, *fr, *fm, *fp, *cm, *nem, *ble;
#ifdef CONFIG_PM
	const char *sep;
#endif

	gr  = cpu_hsr0_all & HSR0_GRHE	? "gr0-63"	: "gr0-31";
	fr  = cpu_hsr0_all & HSR0_FRHE	? "fr0-63"	: "fr0-31";
	fm  = cpu_psr_all  & PSR_EM	? ", Media"	: "";
	fp  = cpu_psr_all  & PSR_EF	? ", FPU"	: "";
	cm  = cpu_psr_all  & PSR_CM	? ", CCCR"	: "";
	nem = cpu_psr_all  & PSR_NEM	? ", NE"	: "";
	ble = cpu_psr_all  & PSR_BE	? "BE"		: "LE";

	seq_printf(m,
		   "CPU-Series:\t%s\n"
		   "CPU-Core:\t%s, %s, %s%s%s\n"
		   "CPU:\t\t%s\n"
		   "MMU:\t\t%s\n"
		   "FP-Media:\t%s%s%s\n"
		   "System:\t\t%s",
		   cpu_series,
		   cpu_core, gr, ble, cm, nem,
		   cpu_silicon,
		   cpu_mmu,
		   fr, fm, fp,
		   cpu_system);

	if (cpu_board1)
		seq_printf(m, ", %s", cpu_board1);

	if (cpu_board2)
		seq_printf(m, ", %s", cpu_board2);

	seq_printf(m, "\n");

#ifdef CONFIG_PM
	seq_printf(m, "PM-Controls:");
	sep = "\t";

	if (clock_bits_settable & CLOCK_BIT_CMODE) {
		seq_printf(m, "%scmode=0x%04hx", sep, clock_cmodes_permitted);
		sep = ", ";
	}

	if (clock_bits_settable & CLOCK_BIT_CM) {
		seq_printf(m, "%scm=0x%lx", sep, clock_bits_settable & CLOCK_BIT_CM);
		sep = ", ";
	}

	if (clock_bits_settable & CLOCK_BIT_P0) {
		seq_printf(m, "%sp0=0x3", sep);
		sep = ", ";
	}

	seq_printf(m, "%ssuspend=0x22\n", sep);
#endif

	seq_printf(m,
		   "PM-Status:\tcmode=%d, cm=%d, p0=%d\n",
		   clock_cmode_current, clock_cm_current, clock_p0_current);

#define print_clk(TAG, VAR) \
	seq_printf(m, "Clock-" TAG ":\t%lu.%2.2lu MHz\n", VAR / 1000000, (VAR / 10000) % 100)

	print_clk("In",    __clkin_clock_speed_HZ);
	print_clk("Core",  __core_clock_speed_HZ);
	print_clk("SDRAM", __sdram_clock_speed_HZ);
	print_clk("CBus",  __core_bus_clock_speed_HZ);
	print_clk("Res",   __res_bus_clock_speed_HZ);
	print_clk("Ext",   __ext_bus_clock_speed_HZ);
	print_clk("DSU",   __dsu_clock_speed_HZ);

	seq_printf(m,
		   "BogoMips:\t%lu.%02lu\n",
		   (loops_per_jiffy * HZ) / 500000, ((loops_per_jiffy * HZ) / 5000) % 100);

	return 0;
} /* end show_cpuinfo() */

static void *c_start(struct seq_file *m, loff_t *pos)
{
	return *pos < NR_CPUS ? (void *) 0x12345678 : NULL;
}

static void *c_next(struct seq_file *m, void *v, loff_t *pos)
{
	++*pos;
	return c_start(m, pos);
}

static void c_stop(struct seq_file *m, void *v)
{
}

struct seq_operations cpuinfo_op = {
	.start	= c_start,
	.next	= c_next,
	.stop	= c_stop,
	.show	= show_cpuinfo,
};

void arch_gettod(int *year, int *mon, int *day, int *hour,
		 int *min, int *sec)
{
	*year = *mon = *day = *hour = *min = *sec = 0;
}

/*****************************************************************************/
/*
 *
 */
#ifdef CONFIG_MB93090_MB00
static void __init mb93090_sendlcdcmd(uint32_t cmd)
{
	unsigned long base = __addr_LCD();
	int loop;

	/* request reading of the busy flag */
	__set_LCD(base, LCD_CMD_READ_BUSY);
	__set_LCD(base, LCD_CMD_READ_BUSY & ~LCD_E);

	/* wait for the busy flag to become clear */
	for (loop = 10000; loop > 0; loop--)
		if (!(__get_LCD(base) & 0x80))
			break;

	/* send the command */
	__set_LCD(base, cmd);
	__set_LCD(base, cmd & ~LCD_E);

} /* end mb93090_sendlcdcmd() */

/*****************************************************************************/
/*
 * write to the MB93090 LEDs and LCD
 */
static void __init mb93090_display(void)
{
	const char *p;

	__set_LEDS(0);

	/* set up the LCD */
	mb93090_sendlcdcmd(LCD_CMD_CLEAR);
	mb93090_sendlcdcmd(LCD_CMD_FUNCSET(1,1,0));
	mb93090_sendlcdcmd(LCD_CMD_ON(0,0));
	mb93090_sendlcdcmd(LCD_CMD_HOME);

	mb93090_sendlcdcmd(LCD_CMD_SET_DD_ADDR(0));
	for (p = mb93090_banner; *p; p++)
		mb93090_sendlcdcmd(LCD_DATA_WRITE(*p));

	mb93090_sendlcdcmd(LCD_CMD_SET_DD_ADDR(64));
	for (p = mb93090_version; *p; p++)
		mb93090_sendlcdcmd(LCD_DATA_WRITE(*p));

} /* end mb93090_display() */

#endif // CONFIG_MB93090_MB00