summaryrefslogtreecommitdiffstats
path: root/arch/m68k/amiga/config.c
blob: ab9862c3a136f4bc49f744b04bd2feae51912e83 (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
/*
 *  linux/arch/m68k/amiga/config.c
 *
 *  Copyright (C) 1993 Hamish Macdonald
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file COPYING in the main directory of this archive
 * for more details.
 */

/*
 * Miscellaneous Amiga stuff
 */

#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/seq_file.h>
#include <linux/tty.h>
#include <linux/console.h>
#include <linux/rtc.h>
#include <linux/init.h>
#include <linux/vt_kern.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/zorro.h>
#include <linux/module.h>
#include <linux/keyboard.h>

#include <asm/bootinfo.h>
#include <asm/setup.h>
#include <asm/system.h>
#include <asm/pgtable.h>
#include <asm/amigahw.h>
#include <asm/amigaints.h>
#include <asm/irq.h>
#include <asm/rtc.h>
#include <asm/machdep.h>
#include <asm/io.h>

static unsigned long amiga_model;

unsigned long amiga_eclock;
EXPORT_SYMBOL(amiga_eclock);

unsigned long amiga_colorclock;
EXPORT_SYMBOL(amiga_colorclock);

unsigned long amiga_chipset;
EXPORT_SYMBOL(amiga_chipset);

unsigned char amiga_vblank;
EXPORT_SYMBOL(amiga_vblank);

static unsigned char amiga_psfreq;

struct amiga_hw_present amiga_hw_present;
EXPORT_SYMBOL(amiga_hw_present);

static char s_a500[] __initdata = "A500";
static char s_a500p[] __initdata = "A500+";
static char s_a600[] __initdata = "A600";
static char s_a1000[] __initdata = "A1000";
static char s_a1200[] __initdata = "A1200";
static char s_a2000[] __initdata = "A2000";
static char s_a2500[] __initdata = "A2500";
static char s_a3000[] __initdata = "A3000";
static char s_a3000t[] __initdata = "A3000T";
static char s_a3000p[] __initdata = "A3000+";
static char s_a4000[] __initdata = "A4000";
static char s_a4000t[] __initdata = "A4000T";
static char s_cdtv[] __initdata = "CDTV";
static char s_cd32[] __initdata = "CD32";
static char s_draco[] __initdata = "Draco";
static char *amiga_models[] __initdata = {
	[AMI_500-AMI_500]	= s_a500,
	[AMI_500PLUS-AMI_500]	= s_a500p,
	[AMI_600-AMI_500]	= s_a600,
	[AMI_1000-AMI_500]	= s_a1000,
	[AMI_1200-AMI_500]	= s_a1200,
	[AMI_2000-AMI_500]	= s_a2000,
	[AMI_2500-AMI_500]	= s_a2500,
	[AMI_3000-AMI_500]	= s_a3000,
	[AMI_3000T-AMI_500]	= s_a3000t,
	[AMI_3000PLUS-AMI_500]	= s_a3000p,
	[AMI_4000-AMI_500]	= s_a4000,
	[AMI_4000T-AMI_500]	= s_a4000t,
	[AMI_CDTV-AMI_500]	= s_cdtv,
	[AMI_CD32-AMI_500]	= s_cd32,
	[AMI_DRACO-AMI_500]	= s_draco,
};

static char amiga_model_name[13] = "Amiga ";

static void amiga_sched_init(irq_handler_t handler);
static void amiga_get_model(char *model);
static void amiga_get_hardware_list(struct seq_file *m);
/* amiga specific timer functions */
static unsigned long amiga_gettimeoffset(void);
static int a3000_hwclk(int, struct rtc_time *);
static int a2000_hwclk(int, struct rtc_time *);
static int amiga_set_clock_mmss(unsigned long);
static unsigned int amiga_get_ss(void);
extern void amiga_mksound(unsigned int count, unsigned int ticks);
static void amiga_reset(void);
extern void amiga_init_sound(void);
static void amiga_mem_console_write(struct console *co, const char *b,
				    unsigned int count);
#ifdef CONFIG_HEARTBEAT
static void amiga_heartbeat(int on);
#endif

static struct console amiga_console_driver = {
	.name	= "debug",
	.flags	= CON_PRINTBUFFER,
	.index	= -1,
};


    /*
     *  Motherboard Resources present in all Amiga models
     */

static struct {
	struct resource _ciab, _ciaa, _custom, _kickstart;
} mb_resources = {
	._ciab = {
		.name = "CIA B", .start = 0x00bfd000, .end = 0x00bfdfff
	},
	._ciaa = {
		.name = "CIA A", .start = 0x00bfe000, .end = 0x00bfefff
	},
	._custom = {
		.name = "Custom I/O", .start = 0x00dff000, .end = 0x00dfffff
	},
	._kickstart = {
		.name = "Kickstart ROM", .start = 0x00f80000, .end = 0x00ffffff
	}
};

static struct resource rtc_resource = {
	.start = 0x00dc0000, .end = 0x00dcffff
};

static struct resource ram_resource[NUM_MEMINFO];


    /*
     *  Parse an Amiga-specific record in the bootinfo
     */

int amiga_parse_bootinfo(const struct bi_record *record)
{
	int unknown = 0;
	const unsigned long *data = record->data;

	switch (record->tag) {
	case BI_AMIGA_MODEL:
		amiga_model = *data;
		break;

	case BI_AMIGA_ECLOCK:
		amiga_eclock = *data;
		break;

	case BI_AMIGA_CHIPSET:
		amiga_chipset = *data;
		break;

	case BI_AMIGA_CHIP_SIZE:
		amiga_chip_size = *(const int *)data;
		break;

	case BI_AMIGA_VBLANK:
		amiga_vblank = *(const unsigned char *)data;
		break;

	case BI_AMIGA_PSFREQ:
		amiga_psfreq = *(const unsigned char *)data;
		break;

	case BI_AMIGA_AUTOCON:
#ifdef CONFIG_ZORRO
		if (zorro_num_autocon < ZORRO_NUM_AUTO) {
			const struct ConfigDev *cd = (struct ConfigDev *)data;
			struct zorro_dev *dev = &zorro_autocon[zorro_num_autocon++];
			dev->rom = cd->cd_Rom;
			dev->slotaddr = cd->cd_SlotAddr;
			dev->slotsize = cd->cd_SlotSize;
			dev->resource.start = (unsigned long)cd->cd_BoardAddr;
			dev->resource.end = dev->resource.start + cd->cd_BoardSize - 1;
		} else
			printk("amiga_parse_bootinfo: too many AutoConfig devices\n");
#endif /* CONFIG_ZORRO */
		break;

	case BI_AMIGA_SERPER:
		/* serial port period: ignored here */
		break;

	default:
		unknown = 1;
	}
	return unknown;
}

    /*
     *  Identify builtin hardware
     */

static void __init amiga_identify(void)
{
	/* Fill in some default values, if necessary */
	if (amiga_eclock == 0)
		amiga_eclock = 709379;

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

	printk("Amiga hardware found: ");
	if (amiga_model >= AMI_500 && amiga_model <= AMI_DRACO) {
		printk("[%s] ", amiga_models[amiga_model-AMI_500]);
		strcat(amiga_model_name, amiga_models[amiga_model-AMI_500]);
	}

	switch (amiga_model) {
	case AMI_UNKNOWN:
		goto Generic;

	case AMI_600:
	case AMI_1200:
		AMIGAHW_SET(A1200_IDE);
		AMIGAHW_SET(PCMCIA);
	case AMI_500:
	case AMI_500PLUS:
	case AMI_1000:
	case AMI_2000:
	case AMI_2500:
		AMIGAHW_SET(A2000_CLK);	/* Is this correct for all models? */
		goto Generic;

	case AMI_3000:
	case AMI_3000T:
		AMIGAHW_SET(AMBER_FF);
		AMIGAHW_SET(MAGIC_REKICK);
		/* fall through */
	case AMI_3000PLUS:
		AMIGAHW_SET(A3000_SCSI);
		AMIGAHW_SET(A3000_CLK);
		AMIGAHW_SET(ZORRO3);
		goto Generic;

	case AMI_4000T:
		AMIGAHW_SET(A4000_SCSI);
		/* fall through */
	case AMI_4000:
		AMIGAHW_SET(A4000_IDE);
		AMIGAHW_SET(A3000_CLK);
		AMIGAHW_SET(ZORRO3);
		goto Generic;

	case AMI_CDTV:
	case AMI_CD32:
		AMIGAHW_SET(CD_ROM);
		AMIGAHW_SET(A2000_CLK);             /* Is this correct? */
		goto Generic;

	Generic:
		AMIGAHW_SET(AMI_VIDEO);
		AMIGAHW_SET(AMI_BLITTER);
		AMIGAHW_SET(AMI_AUDIO);
		AMIGAHW_SET(AMI_FLOPPY);
		AMIGAHW_SET(AMI_KEYBOARD);
		AMIGAHW_SET(AMI_MOUSE);
		AMIGAHW_SET(AMI_SERIAL);
		AMIGAHW_SET(AMI_PARALLEL);
		AMIGAHW_SET(CHIP_RAM);
		AMIGAHW_SET(PAULA);

		switch (amiga_chipset) {
		case CS_OCS:
		case CS_ECS:
		case CS_AGA:
			switch (amiga_custom.deniseid & 0xf) {
			case 0x0c:
				AMIGAHW_SET(DENISE_HR);
				break;
			case 0x08:
				AMIGAHW_SET(LISA);
				break;
			}
			break;
		default:
			AMIGAHW_SET(DENISE);
			break;
		}
		switch ((amiga_custom.vposr>>8) & 0x7f) {
		case 0x00:
			AMIGAHW_SET(AGNUS_PAL);
			break;
		case 0x10:
			AMIGAHW_SET(AGNUS_NTSC);
			break;
		case 0x20:
		case 0x21:
			AMIGAHW_SET(AGNUS_HR_PAL);
			break;
		case 0x30:
		case 0x31:
			AMIGAHW_SET(AGNUS_HR_NTSC);
			break;
		case 0x22:
		case 0x23:
			AMIGAHW_SET(ALICE_PAL);
			break;
		case 0x32:
		case 0x33:
			AMIGAHW_SET(ALICE_NTSC);
			break;
		}
		AMIGAHW_SET(ZORRO);
		break;

	case AMI_DRACO:
		panic("No support for Draco yet");

	default:
		panic("Unknown Amiga Model");
	}

#define AMIGAHW_ANNOUNCE(name, str)		\
	if (AMIGAHW_PRESENT(name))		\
		printk(str)

	AMIGAHW_ANNOUNCE(AMI_VIDEO, "VIDEO ");
	AMIGAHW_ANNOUNCE(AMI_BLITTER, "BLITTER ");
	AMIGAHW_ANNOUNCE(AMBER_FF, "AMBER_FF ");
	AMIGAHW_ANNOUNCE(AMI_AUDIO, "AUDIO ");
	AMIGAHW_ANNOUNCE(AMI_FLOPPY, "FLOPPY ");
	AMIGAHW_ANNOUNCE(A3000_SCSI, "A3000_SCSI ");
	AMIGAHW_ANNOUNCE(A4000_SCSI, "A4000_SCSI ");
	AMIGAHW_ANNOUNCE(A1200_IDE, "A1200_IDE ");
	AMIGAHW_ANNOUNCE(A4000_IDE, "A4000_IDE ");
	AMIGAHW_ANNOUNCE(CD_ROM, "CD_ROM ");
	AMIGAHW_ANNOUNCE(AMI_KEYBOARD, "KEYBOARD ");
	AMIGAHW_ANNOUNCE(AMI_MOUSE, "MOUSE ");
	AMIGAHW_ANNOUNCE(AMI_SERIAL, "SERIAL ");
	AMIGAHW_ANNOUNCE(AMI_PARALLEL, "PARALLEL ");
	AMIGAHW_ANNOUNCE(A2000_CLK, "A2000_CLK ");
	AMIGAHW_ANNOUNCE(A3000_CLK, "A3000_CLK ");
	AMIGAHW_ANNOUNCE(CHIP_RAM, "CHIP_RAM ");
	AMIGAHW_ANNOUNCE(PAULA, "PAULA ");
	AMIGAHW_ANNOUNCE(DENISE, "DENISE ");
	AMIGAHW_ANNOUNCE(DENISE_HR, "DENISE_HR ");
	AMIGAHW_ANNOUNCE(LISA, "LISA ");
	AMIGAHW_ANNOUNCE(AGNUS_PAL, "AGNUS_PAL ");
	AMIGAHW_ANNOUNCE(AGNUS_NTSC, "AGNUS_NTSC ");
	AMIGAHW_ANNOUNCE(AGNUS_HR_PAL, "AGNUS_HR_PAL ");
	AMIGAHW_ANNOUNCE(AGNUS_HR_NTSC, "AGNUS_HR_NTSC ");
	AMIGAHW_ANNOUNCE(ALICE_PAL, "ALICE_PAL ");
	AMIGAHW_ANNOUNCE(ALICE_NTSC, "ALICE_NTSC ");
	AMIGAHW_ANNOUNCE(MAGIC_REKICK, "MAGIC_REKICK ");
	AMIGAHW_ANNOUNCE(PCMCIA, "PCMCIA ");
	if (AMIGAHW_PRESENT(ZORRO))
		printk("ZORRO%s ", AMIGAHW_PRESENT(ZORRO3) ? "3" : "");
	printk("\n");

#undef AMIGAHW_ANNOUNCE
}

    /*
     *  Setup the Amiga configuration info
     */

void __init config_amiga(void)
{
	int i;

	amiga_identify();

	/* Yuk, we don't have PCI memory */
	iomem_resource.name = "Memory";
	for (i = 0; i < 4; i++)
		request_resource(&iomem_resource, &((struct resource *)&mb_resources)[i]);

	mach_sched_init      = amiga_sched_init;
	mach_init_IRQ        = amiga_init_IRQ;
	mach_get_model       = amiga_get_model;
	mach_get_hardware_list = amiga_get_hardware_list;
	mach_gettimeoffset   = amiga_gettimeoffset;
	if (AMIGAHW_PRESENT(A3000_CLK)) {
		mach_hwclk         = a3000_hwclk;
		rtc_resource.name = "A3000 RTC";
		request_resource(&iomem_resource, &rtc_resource);
	} else /* if (AMIGAHW_PRESENT(A2000_CLK)) */ {
		mach_hwclk         = a2000_hwclk;
		rtc_resource.name = "A2000 RTC";
		request_resource(&iomem_resource, &rtc_resource);
	}

	/*
	 * default MAX_DMA=0xffffffff on all machines. If we don't do so, the SCSI
	 * code will not be able to allocate any mem for transfers, unless we are
	 * dealing with a Z2 mem only system.                  /Jes
	 */
	mach_max_dma_address = 0xffffffff;

	mach_set_clock_mmss  = amiga_set_clock_mmss;
	mach_get_ss          = amiga_get_ss;
	mach_reset           = amiga_reset;
#if defined(CONFIG_INPUT_M68K_BEEP) || defined(CONFIG_INPUT_M68K_BEEP_MODULE)
	mach_beep            = amiga_mksound;
#endif

#ifdef CONFIG_HEARTBEAT
	mach_heartbeat = amiga_heartbeat;
#endif

	/* Fill in the clock value (based on the 700 kHz E-Clock) */
	amiga_colorclock = 5*amiga_eclock;	/* 3.5 MHz */

	/* clear all DMA bits */
	amiga_custom.dmacon = DMAF_ALL;
	/* ensure that the DMA master bit is set */
	amiga_custom.dmacon = DMAF_SETCLR | DMAF_MASTER;

	/* don't use Z2 RAM as system memory on Z3 capable machines */
	if (AMIGAHW_PRESENT(ZORRO3)) {
		int i, j;
		u32 disabled_z2mem = 0;

		for (i = 0; i < m68k_num_memory; i++) {
			if (m68k_memory[i].addr < 16*1024*1024) {
				if (i == 0) {
					/* don't cut off the branch we're sitting on */
					printk("Warning: kernel runs in Zorro II memory\n");
					continue;
				}
				disabled_z2mem += m68k_memory[i].size;
				m68k_num_memory--;
				for (j = i; j < m68k_num_memory; j++)
					m68k_memory[j] = m68k_memory[j+1];
				i--;
			}
		}
		if (disabled_z2mem)
		printk("%dK of Zorro II memory will not be used as system memory\n",
		disabled_z2mem>>10);
	}

	/* request all RAM */
	for (i = 0; i < m68k_num_memory; i++) {
		ram_resource[i].name =
			(m68k_memory[i].addr >= 0x01000000) ? "32-bit Fast RAM" :
			(m68k_memory[i].addr < 0x00c00000) ? "16-bit Fast RAM" :
			"16-bit Slow RAM";
		ram_resource[i].start = m68k_memory[i].addr;
		ram_resource[i].end = m68k_memory[i].addr+m68k_memory[i].size-1;
		request_resource(&iomem_resource, &ram_resource[i]);
	}

	/* initialize chipram allocator */
	amiga_chip_init();

	/* our beloved beeper */
	if (AMIGAHW_PRESENT(AMI_AUDIO))
		amiga_init_sound();

	/*
	 * if it is an A3000, set the magic bit that forces
	 * a hard rekick
	 */
	if (AMIGAHW_PRESENT(MAGIC_REKICK))
		*(unsigned char *)ZTWO_VADDR(0xde0002) |= 0x80;
}

static unsigned short jiffy_ticks;

static void __init amiga_sched_init(irq_handler_t timer_routine)
{
	static struct resource sched_res = {
		.name = "timer", .start = 0x00bfd400, .end = 0x00bfd5ff,
	};
	jiffy_ticks = (amiga_eclock+HZ/2)/HZ;

	if (request_resource(&mb_resources._ciab, &sched_res))
		printk("Cannot allocate ciab.ta{lo,hi}\n");
	ciab.cra &= 0xC0;   /* turn off timer A, continuous mode, from Eclk */
	ciab.talo = jiffy_ticks % 256;
	ciab.tahi = jiffy_ticks / 256;

	/* install interrupt service routine for CIAB Timer A
	 *
	 * Please don't change this to use ciaa, as it interferes with the
	 * SCSI code. We'll have to take a look at this later
	 */
	request_irq(IRQ_AMIGA_CIAB_TA, timer_routine, 0, "timer", NULL);
	/* start timer */
	ciab.cra |= 0x11;
}

#define TICK_SIZE 10000

/* This is always executed with interrupts disabled.  */
static unsigned long amiga_gettimeoffset(void)
{
	unsigned short hi, lo, hi2;
	unsigned long ticks, offset = 0;

	/* read CIA B timer A current value */
	hi  = ciab.tahi;
	lo  = ciab.talo;
	hi2 = ciab.tahi;

	if (hi != hi2) {
		lo = ciab.talo;
		hi = hi2;
	}

	ticks = hi << 8 | lo;

	if (ticks > jiffy_ticks / 2)
		/* check for pending interrupt */
		if (cia_set_irq(&ciab_base, 0) & CIA_ICR_TA)
			offset = 10000;

	ticks = jiffy_ticks - ticks;
	ticks = (10000 * ticks) / jiffy_ticks;

	return ticks + offset;
}

static int a3000_hwclk(int op, struct rtc_time *t)
{
	tod_3000.cntrl1 = TOD3000_CNTRL1_HOLD;

	if (!op) { /* read */
		t->tm_sec  = tod_3000.second1 * 10 + tod_3000.second2;
		t->tm_min  = tod_3000.minute1 * 10 + tod_3000.minute2;
		t->tm_hour = tod_3000.hour1   * 10 + tod_3000.hour2;
		t->tm_mday = tod_3000.day1    * 10 + tod_3000.day2;
		t->tm_wday = tod_3000.weekday;
		t->tm_mon  = tod_3000.month1  * 10 + tod_3000.month2 - 1;
		t->tm_year = tod_3000.year1   * 10 + tod_3000.year2;
		if (t->tm_year <= 69)
			t->tm_year += 100;
	} else {
		tod_3000.second1 = t->tm_sec / 10;
		tod_3000.second2 = t->tm_sec % 10;
		tod_3000.minute1 = t->tm_min / 10;
		tod_3000.minute2 = t->tm_min % 10;
		tod_3000.hour1   = t->tm_hour / 10;
		tod_3000.hour2   = t->tm_hour % 10;
		tod_3000.day1    = t->tm_mday / 10;
		tod_3000.day2    = t->tm_mday % 10;
		if (t->tm_wday != -1)
			tod_3000.weekday = t->tm_wday;
		tod_3000.month1  = (t->tm_mon + 1) / 10;
		tod_3000.month2  = (t->tm_mon + 1) % 10;
		if (t->tm_year >= 100)
			t->tm_year -= 100;
		tod_3000.year1   = t->tm_year / 10;
		tod_3000.year2   = t->tm_year % 10;
	}

	tod_3000.cntrl1 = TOD3000_CNTRL1_FREE;

	return 0;
}

static int a2000_hwclk(int op, struct rtc_time *t)
{
	int cnt = 5;

	tod_2000.cntrl1 = TOD2000_CNTRL1_HOLD;

	while ((tod_2000.cntrl1 & TOD2000_CNTRL1_BUSY) && cnt--) {
		tod_2000.cntrl1 &= ~TOD2000_CNTRL1_HOLD;
		udelay(70);
		tod_2000.cntrl1 |= TOD2000_CNTRL1_HOLD;
	}

	if (!cnt)
		printk(KERN_INFO "hwclk: timed out waiting for RTC (0x%x)\n",
			tod_2000.cntrl1);

	if (!op) { /* read */
		t->tm_sec  = tod_2000.second1     * 10 + tod_2000.second2;
		t->tm_min  = tod_2000.minute1     * 10 + tod_2000.minute2;
		t->tm_hour = (tod_2000.hour1 & 3) * 10 + tod_2000.hour2;
		t->tm_mday = tod_2000.day1        * 10 + tod_2000.day2;
		t->tm_wday = tod_2000.weekday;
		t->tm_mon  = tod_2000.month1      * 10 + tod_2000.month2 - 1;
		t->tm_year = tod_2000.year1       * 10 + tod_2000.year2;
		if (t->tm_year <= 69)
			t->tm_year += 100;

		if (!(tod_2000.cntrl3 & TOD2000_CNTRL3_24HMODE)) {
			if (!(tod_2000.hour1 & TOD2000_HOUR1_PM) && t->tm_hour == 12)
				t->tm_hour = 0;
			else if ((tod_2000.hour1 & TOD2000_HOUR1_PM) && t->tm_hour != 12)
				t->tm_hour += 12;
		}
	} else {
		tod_2000.second1 = t->tm_sec / 10;
		tod_2000.second2 = t->tm_sec % 10;
		tod_2000.minute1 = t->tm_min / 10;
		tod_2000.minute2 = t->tm_min % 10;
		if (tod_2000.cntrl3 & TOD2000_CNTRL3_24HMODE)
			tod_2000.hour1 = t->tm_hour / 10;
		else if (t->tm_hour >= 12)
			tod_2000.hour1 = TOD2000_HOUR1_PM +
				(t->tm_hour - 12) / 10;
		else
			tod_2000.hour1 = t->tm_hour / 10;
		tod_2000.hour2   = t->tm_hour % 10;
		tod_2000.day1    = t->tm_mday / 10;
		tod_2000.day2    = t->tm_mday % 10;
		if (t->tm_wday != -1)
			tod_2000.weekday = t->tm_wday;
		tod_2000.month1  = (t->tm_mon + 1) / 10;
		tod_2000.month2  = (t->tm_mon + 1) % 10;
		if (t->tm_year >= 100)
			t->tm_year -= 100;
		tod_2000.year1   = t->tm_year / 10;
		tod_2000.year2   = t->tm_year % 10;
	}

	tod_2000.cntrl1 &= ~TOD2000_CNTRL1_HOLD;

	return 0;
}

static int amiga_set_clock_mmss(unsigned long nowtime)
{
	short real_seconds = nowtime % 60, real_minutes = (nowtime / 60) % 60;

	if (AMIGAHW_PRESENT(A3000_CLK)) {
		tod_3000.cntrl1 = TOD3000_CNTRL1_HOLD;

		tod_3000.second1 = real_seconds / 10;
		tod_3000.second2 = real_seconds % 10;
		tod_3000.minute1 = real_minutes / 10;
		tod_3000.minute2 = real_minutes % 10;

		tod_3000.cntrl1 = TOD3000_CNTRL1_FREE;
	} else /* if (AMIGAHW_PRESENT(A2000_CLK)) */ {
		int cnt = 5;

		tod_2000.cntrl1 |= TOD2000_CNTRL1_HOLD;

		while ((tod_2000.cntrl1 & TOD2000_CNTRL1_BUSY) && cnt--) {
			tod_2000.cntrl1 &= ~TOD2000_CNTRL1_HOLD;
			udelay(70);
			tod_2000.cntrl1 |= TOD2000_CNTRL1_HOLD;
		}

		if (!cnt)
			printk(KERN_INFO "set_clock_mmss: timed out waiting for RTC (0x%x)\n", tod_2000.cntrl1);

		tod_2000.second1 = real_seconds / 10;
		tod_2000.second2 = real_seconds % 10;
		tod_2000.minute1 = real_minutes / 10;
		tod_2000.minute2 = real_minutes % 10;

		tod_2000.cntrl1 &= ~TOD2000_CNTRL1_HOLD;
	}

	return 0;
}

static unsigned int amiga_get_ss(void)
{
	unsigned int s;

	if (AMIGAHW_PRESENT(A3000_CLK)) {
		tod_3000.cntrl1 = TOD3000_CNTRL1_HOLD;
		s = tod_3000.second1 * 10 + tod_3000.second2;
		tod_3000.cntrl1 = TOD3000_CNTRL1_FREE;
	} else /* if (AMIGAHW_PRESENT(A2000_CLK)) */ {
		s = tod_2000.second1 * 10 + tod_2000.second2;
	}
	return s;
}

static NORET_TYPE void amiga_reset(void)
    ATTRIB_NORET;

static void amiga_reset(void)
{
	unsigned long jmp_addr040 = virt_to_phys(&&jmp_addr_label040);
	unsigned long jmp_addr = virt_to_phys(&&jmp_addr_label);

	local_irq_disable();
	if (CPU_IS_040_OR_060)
		/* Setup transparent translation registers for mapping
		 * of 16 MB kernel segment before disabling translation
		 */
		asm volatile ("\n"
			"	move.l	%0,%%d0\n"
			"	and.l	#0xff000000,%%d0\n"
			"	or.w	#0xe020,%%d0\n"   /* map 16 MB, enable, cacheable */
			"	.chip	68040\n"
			"	movec	%%d0,%%itt0\n"
			"	movec	%%d0,%%dtt0\n"
			"	.chip	68k\n"
			"	jmp	%0@\n"
			: /* no outputs */
			: "a" (jmp_addr040)
			: "d0");
	else
		/* for 680[23]0, just disable translation and jump to the physical
		 * address of the label
		 */
		asm volatile ("\n"
			"	pmove	%%tc,%@\n"
			"	bclr	#7,%@\n"
			"	pmove	%@,%%tc\n"
			"	jmp	%0@\n"
			: /* no outputs */
			: "a" (jmp_addr));
jmp_addr_label040:
	/* disable translation on '040 now */
	asm volatile ("\n"
		"	moveq	#0,%%d0\n"
		"	.chip	68040\n"
		"	movec	%%d0,%%tc\n"	/* disable MMU */
		"	.chip	68k\n"
		: /* no outputs */
		: /* no inputs */
		: "d0");

	jmp_addr_label:
	/* pickup reset address from AmigaOS ROM, reset devices and jump
	 * to reset address
	 */
	asm volatile ("\n"
		"	move.w	#0x2700,%sr\n"
		"	lea	0x01000000,%a0\n"
		"	sub.l	%a0@(-0x14),%a0\n"
		"	move.l	%a0@(4),%a0\n"
		"	subq.l	#2,%a0\n"
		"	jra	1f\n"
		/* align on a longword boundary */
		"	" __ALIGN_STR "\n"
		"1:\n"
		"	reset\n"
		"	jmp   %a0@");

	for (;;)
		;
}


    /*
     *  Debugging
     */

#define SAVEKMSG_MAXMEM		128*1024

#define SAVEKMSG_MAGIC1		0x53415645	/* 'SAVE' */
#define SAVEKMSG_MAGIC2		0x4B4D5347	/* 'KMSG' */

struct savekmsg {
	unsigned long magic1;		/* SAVEKMSG_MAGIC1 */
	unsigned long magic2;		/* SAVEKMSG_MAGIC2 */
	unsigned long magicptr;		/* address of magic1 */
	unsigned long size;
	char data[0];
};

static struct savekmsg *savekmsg;

static void amiga_mem_console_write(struct console *co, const char *s,
				    unsigned int count)
{
	if (savekmsg->size + count <= SAVEKMSG_MAXMEM-sizeof(struct savekmsg)) {
		memcpy(savekmsg->data + savekmsg->size, s, count);
		savekmsg->size += count;
	}
}

static int __init amiga_savekmsg_setup(char *arg)
{
	static struct resource debug_res = { .name = "Debug" };

	if (!MACH_IS_AMIGA || strcmp(arg, "mem"))
		goto done;

	if (!AMIGAHW_PRESENT(CHIP_RAM)) {
		printk("Warning: no chipram present for debugging\n");
		goto done;
	}

	savekmsg = amiga_chip_alloc_res(SAVEKMSG_MAXMEM, &debug_res);
	savekmsg->magic1 = SAVEKMSG_MAGIC1;
	savekmsg->magic2 = SAVEKMSG_MAGIC2;
	savekmsg->magicptr = ZTWO_PADDR(savekmsg);
	savekmsg->size = 0;

	amiga_console_driver.write = amiga_mem_console_write;
	register_console(&amiga_console_driver);

done:
	return 0;
}

early_param("debug", amiga_savekmsg_setup);

static void amiga_serial_putc(char c)
{
	amiga_custom.serdat = (unsigned char)c | 0x100;
	while (!(amiga_custom.serdatr & 0x2000))
		;
}

static void amiga_serial_console_write(struct console *co, const char *s,
				       unsigned int count)
{
	while (count--) {
		if (*s == '\n')
			amiga_serial_putc('\r');
		amiga_serial_putc(*s++);
	}
}

#if 0
void amiga_serial_puts(const char *s)
{
	amiga_serial_console_write(NULL, s, strlen(s));
}

int amiga_serial_console_wait_key(struct console *co)
{
	int ch;

	while (!(amiga_custom.intreqr & IF_RBF))
		barrier();
	ch = amiga_custom.serdatr & 0xff;
	/* clear the interrupt, so that another character can be read */
	amiga_custom.intreq = IF_RBF;
	return ch;
}

void amiga_serial_gets(struct console *co, char *s, int len)
{
	int ch, cnt = 0;

	while (1) {
		ch = amiga_serial_console_wait_key(co);

		/* Check for backspace. */
		if (ch == 8 || ch == 127) {
			if (cnt == 0) {
				amiga_serial_putc('\007');
				continue;
			}
			cnt--;
			amiga_serial_puts("\010 \010");
			continue;
		}

		/* Check for enter. */
		if (ch == 10 || ch == 13)
			break;

		/* See if line is too long. */
		if (cnt >= len + 1) {
			amiga_serial_putc(7);
			cnt--;
			continue;
		}

		/* Store and echo character. */
		s[cnt++] = ch;
		amiga_serial_putc(ch);
	}
	/* Print enter. */
	amiga_serial_puts("\r\n");
	s[cnt] = 0;
}
#endif

static int __init amiga_debug_setup(char *arg)
{
	if (MACH_IS_AMIGA && !strcmp(arg, "ser")) {
		/* no initialization required (?) */
		amiga_console_driver.write = amiga_serial_console_write;
		register_console(&amiga_console_driver);
	}
	return 0;
}

early_param("debug", amiga_debug_setup);

#ifdef CONFIG_HEARTBEAT
static void amiga_heartbeat(int on)
{
	if (on)
		ciaa.pra &= ~2;
	else
		ciaa.pra |= 2;
}
#endif

    /*
     *  Amiga specific parts of /proc
     */

static void amiga_get_model(char *model)
{
	strcpy(model, amiga_model_name);
}


static void amiga_get_hardware_list(struct seq_file *m)
{
	if (AMIGAHW_PRESENT(CHIP_RAM))
		seq_printf(m, "Chip RAM:\t%ldK\n", amiga_chip_size>>10);
	seq_printf(m, "PS Freq:\t%dHz\nEClock Freq:\t%ldHz\n",
			amiga_psfreq, amiga_eclock);
	if (AMIGAHW_PRESENT(AMI_VIDEO)) {
		char *type;
		switch (amiga_chipset) {
		case CS_OCS:
			type = "OCS";
			break;
		case CS_ECS:
			type = "ECS";
			break;
		case CS_AGA:
			type = "AGA";
			break;
		default:
			type = "Old or Unknown";
			break;
		}
		seq_printf(m, "Graphics:\t%s\n", type);
	}

#define AMIGAHW_ANNOUNCE(name, str)			\
	if (AMIGAHW_PRESENT(name))			\
		seq_printf (m, "\t%s\n", str)

	seq_printf (m, "Detected hardware:\n");

	AMIGAHW_ANNOUNCE(AMI_VIDEO, "Amiga Video");
	AMIGAHW_ANNOUNCE(AMI_BLITTER, "Blitter");
	AMIGAHW_ANNOUNCE(AMBER_FF, "Amber Flicker Fixer");
	AMIGAHW_ANNOUNCE(AMI_AUDIO, "Amiga Audio");
	AMIGAHW_ANNOUNCE(AMI_FLOPPY, "Floppy Controller");
	AMIGAHW_ANNOUNCE(A3000_SCSI, "SCSI Controller WD33C93 (A3000 style)");
	AMIGAHW_ANNOUNCE(A4000_SCSI, "SCSI Controller NCR53C710 (A4000T style)");
	AMIGAHW_ANNOUNCE(A1200_IDE, "IDE Interface (A1200 style)");
	AMIGAHW_ANNOUNCE(A4000_IDE, "IDE Interface (A4000 style)");
	AMIGAHW_ANNOUNCE(CD_ROM, "Internal CD ROM drive");
	AMIGAHW_ANNOUNCE(AMI_KEYBOARD, "Keyboard");
	AMIGAHW_ANNOUNCE(AMI_MOUSE, "Mouse Port");
	AMIGAHW_ANNOUNCE(AMI_SERIAL, "Serial Port");
	AMIGAHW_ANNOUNCE(AMI_PARALLEL, "Parallel Port");
	AMIGAHW_ANNOUNCE(A2000_CLK, "Hardware Clock (A2000 style)");
	AMIGAHW_ANNOUNCE(A3000_CLK, "Hardware Clock (A3000 style)");
	AMIGAHW_ANNOUNCE(CHIP_RAM, "Chip RAM");
	AMIGAHW_ANNOUNCE(PAULA, "Paula 8364");
	AMIGAHW_ANNOUNCE(DENISE, "Denise 8362");
	AMIGAHW_ANNOUNCE(DENISE_HR, "Denise 8373");
	AMIGAHW_ANNOUNCE(LISA, "Lisa 8375");
	AMIGAHW_ANNOUNCE(AGNUS_PAL, "Normal/Fat PAL Agnus 8367/8371");
	AMIGAHW_ANNOUNCE(AGNUS_NTSC, "Normal/Fat NTSC Agnus 8361/8370");
	AMIGAHW_ANNOUNCE(AGNUS_HR_PAL, "Fat Hires PAL Agnus 8372");
	AMIGAHW_ANNOUNCE(AGNUS_HR_NTSC, "Fat Hires NTSC Agnus 8372");
	AMIGAHW_ANNOUNCE(ALICE_PAL, "PAL Alice 8374");
	AMIGAHW_ANNOUNCE(ALICE_NTSC, "NTSC Alice 8374");
	AMIGAHW_ANNOUNCE(MAGIC_REKICK, "Magic Hard Rekick");
	AMIGAHW_ANNOUNCE(PCMCIA, "PCMCIA Slot");
#ifdef CONFIG_ZORRO
	if (AMIGAHW_PRESENT(ZORRO))
		seq_printf(m, "\tZorro II%s AutoConfig: %d Expansion "
				"Device%s\n",
				AMIGAHW_PRESENT(ZORRO3) ? "I" : "",
				zorro_num_autocon, zorro_num_autocon == 1 ? "" : "s");
#endif /* CONFIG_ZORRO */

#undef AMIGAHW_ANNOUNCE
}

/*
 * The Amiga keyboard driver needs key_maps, but we cannot export it in
 * drivers/char/defkeymap.c, as it is autogenerated
 */
#ifdef CONFIG_HW_CONSOLE
EXPORT_SYMBOL_GPL(key_maps);
#endif
OpenPOWER on IntegriCloud