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1/*
2 * linux/arch/m68k/amiga/config.c
3 *
4 * Copyright (C) 1993 Hamish Macdonald
5 *
6 * This file is subject to the terms and conditions of the GNU General Public
7 * License. See the file COPYING in the main directory of this archive
8 * for more details.
9 */
10
11/*
12 * Miscellaneous Amiga stuff
13 */
14
15#include <linux/types.h>
16#include <linux/kernel.h>
17#include <linux/mm.h>
18#include <linux/seq_file.h>
19#include <linux/tty.h>
20#include <linux/console.h>
21#include <linux/rtc.h>
22#include <linux/init.h>
23#include <linux/vt_kern.h>
24#include <linux/delay.h>
25#include <linux/interrupt.h>
26#include <linux/zorro.h>
27#include <linux/module.h>
28#include <linux/keyboard.h>
29
30#include <asm/bootinfo.h>
31#include <asm/setup.h>
32#include <asm/system.h>
33#include <asm/pgtable.h>
34#include <asm/amigahw.h>
35#include <asm/amigaints.h>
36#include <asm/irq.h>
37#include <asm/rtc.h>
38#include <asm/machdep.h>
39#include <asm/io.h>
40
41static unsigned long amiga_model;
42
43unsigned long amiga_eclock;
44EXPORT_SYMBOL(amiga_eclock);
45
46unsigned long amiga_colorclock;
47EXPORT_SYMBOL(amiga_colorclock);
48
49unsigned long amiga_chipset;
50EXPORT_SYMBOL(amiga_chipset);
51
52unsigned char amiga_vblank;
53EXPORT_SYMBOL(amiga_vblank);
54
55static unsigned char amiga_psfreq;
56
57struct amiga_hw_present amiga_hw_present;
58EXPORT_SYMBOL(amiga_hw_present);
59
60static char s_a500[] __initdata = "A500";
61static char s_a500p[] __initdata = "A500+";
62static char s_a600[] __initdata = "A600";
63static char s_a1000[] __initdata = "A1000";
64static char s_a1200[] __initdata = "A1200";
65static char s_a2000[] __initdata = "A2000";
66static char s_a2500[] __initdata = "A2500";
67static char s_a3000[] __initdata = "A3000";
68static char s_a3000t[] __initdata = "A3000T";
69static char s_a3000p[] __initdata = "A3000+";
70static char s_a4000[] __initdata = "A4000";
71static char s_a4000t[] __initdata = "A4000T";
72static char s_cdtv[] __initdata = "CDTV";
73static char s_cd32[] __initdata = "CD32";
74static char s_draco[] __initdata = "Draco";
75static char *amiga_models[] __initdata = {
76 [AMI_500-AMI_500] = s_a500,
77 [AMI_500PLUS-AMI_500] = s_a500p,
78 [AMI_600-AMI_500] = s_a600,
79 [AMI_1000-AMI_500] = s_a1000,
80 [AMI_1200-AMI_500] = s_a1200,
81 [AMI_2000-AMI_500] = s_a2000,
82 [AMI_2500-AMI_500] = s_a2500,
83 [AMI_3000-AMI_500] = s_a3000,
84 [AMI_3000T-AMI_500] = s_a3000t,
85 [AMI_3000PLUS-AMI_500] = s_a3000p,
86 [AMI_4000-AMI_500] = s_a4000,
87 [AMI_4000T-AMI_500] = s_a4000t,
88 [AMI_CDTV-AMI_500] = s_cdtv,
89 [AMI_CD32-AMI_500] = s_cd32,
90 [AMI_DRACO-AMI_500] = s_draco,
91};
92
93static char amiga_model_name[13] = "Amiga ";
94
95static void amiga_sched_init(irq_handler_t handler);
96static void amiga_get_model(char *model);
97static void amiga_get_hardware_list(struct seq_file *m);
98/* amiga specific timer functions */
99static unsigned long amiga_gettimeoffset(void);
100extern void amiga_mksound(unsigned int count, unsigned int ticks);
101static void amiga_reset(void);
102extern void amiga_init_sound(void);
103static void amiga_mem_console_write(struct console *co, const char *b,
104 unsigned int count);
105#ifdef CONFIG_HEARTBEAT
106static void amiga_heartbeat(int on);
107#endif
108
109static struct console amiga_console_driver = {
110 .name = "debug",
111 .flags = CON_PRINTBUFFER,
112 .index = -1,
113};
114
115
116 /*
117 * Motherboard Resources present in all Amiga models
118 */
119
120static struct {
121 struct resource _ciab, _ciaa, _custom, _kickstart;
122} mb_resources = {
123 ._ciab = {
124 .name = "CIA B", .start = 0x00bfd000, .end = 0x00bfdfff
125 },
126 ._ciaa = {
127 .name = "CIA A", .start = 0x00bfe000, .end = 0x00bfefff
128 },
129 ._custom = {
130 .name = "Custom I/O", .start = 0x00dff000, .end = 0x00dfffff
131 },
132 ._kickstart = {
133 .name = "Kickstart ROM", .start = 0x00f80000, .end = 0x00ffffff
134 }
135};
136
137static struct resource ram_resource[NUM_MEMINFO];
138
139
140 /*
141 * Parse an Amiga-specific record in the bootinfo
142 */
143
144int amiga_parse_bootinfo(const struct bi_record *record)
145{
146 int unknown = 0;
147 const unsigned long *data = record->data;
148
149 switch (record->tag) {
150 case BI_AMIGA_MODEL:
151 amiga_model = *data;
152 break;
153
154 case BI_AMIGA_ECLOCK:
155 amiga_eclock = *data;
156 break;
157
158 case BI_AMIGA_CHIPSET:
159 amiga_chipset = *data;
160 break;
161
162 case BI_AMIGA_CHIP_SIZE:
163 amiga_chip_size = *(const int *)data;
164 break;
165
166 case BI_AMIGA_VBLANK:
167 amiga_vblank = *(const unsigned char *)data;
168 break;
169
170 case BI_AMIGA_PSFREQ:
171 amiga_psfreq = *(const unsigned char *)data;
172 break;
173
174 case BI_AMIGA_AUTOCON:
175#ifdef CONFIG_ZORRO
176 if (zorro_num_autocon < ZORRO_NUM_AUTO) {
177 const struct ConfigDev *cd = (struct ConfigDev *)data;
178 struct zorro_dev *dev = &zorro_autocon[zorro_num_autocon++];
179 dev->rom = cd->cd_Rom;
180 dev->slotaddr = cd->cd_SlotAddr;
181 dev->slotsize = cd->cd_SlotSize;
182 dev->resource.start = (unsigned long)cd->cd_BoardAddr;
183 dev->resource.end = dev->resource.start + cd->cd_BoardSize - 1;
184 } else
185 printk("amiga_parse_bootinfo: too many AutoConfig devices\n");
186#endif /* CONFIG_ZORRO */
187 break;
188
189 case BI_AMIGA_SERPER:
190 /* serial port period: ignored here */
191 break;
192
193 default:
194 unknown = 1;
195 }
196 return unknown;
197}
198
199 /*
200 * Identify builtin hardware
201 */
202
203static void __init amiga_identify(void)
204{
205 /* Fill in some default values, if necessary */
206 if (amiga_eclock == 0)
207 amiga_eclock = 709379;
208
209 memset(&amiga_hw_present, 0, sizeof(amiga_hw_present));
210
211 printk("Amiga hardware found: ");
212 if (amiga_model >= AMI_500 && amiga_model <= AMI_DRACO) {
213 printk("[%s] ", amiga_models[amiga_model-AMI_500]);
214 strcat(amiga_model_name, amiga_models[amiga_model-AMI_500]);
215 }
216
217 switch (amiga_model) {
218 case AMI_UNKNOWN:
219 goto Generic;
220
221 case AMI_600:
222 case AMI_1200:
223 AMIGAHW_SET(A1200_IDE);
224 AMIGAHW_SET(PCMCIA);
225 case AMI_500:
226 case AMI_500PLUS:
227 case AMI_1000:
228 case AMI_2000:
229 case AMI_2500:
230 AMIGAHW_SET(A2000_CLK); /* Is this correct for all models? */
231 goto Generic;
232
233 case AMI_3000:
234 case AMI_3000T:
235 AMIGAHW_SET(AMBER_FF);
236 AMIGAHW_SET(MAGIC_REKICK);
237 /* fall through */
238 case AMI_3000PLUS:
239 AMIGAHW_SET(A3000_SCSI);
240 AMIGAHW_SET(A3000_CLK);
241 AMIGAHW_SET(ZORRO3);
242 goto Generic;
243
244 case AMI_4000T:
245 AMIGAHW_SET(A4000_SCSI);
246 /* fall through */
247 case AMI_4000:
248 AMIGAHW_SET(A4000_IDE);
249 AMIGAHW_SET(A3000_CLK);
250 AMIGAHW_SET(ZORRO3);
251 goto Generic;
252
253 case AMI_CDTV:
254 case AMI_CD32:
255 AMIGAHW_SET(CD_ROM);
256 AMIGAHW_SET(A2000_CLK); /* Is this correct? */
257 goto Generic;
258
259 Generic:
260 AMIGAHW_SET(AMI_VIDEO);
261 AMIGAHW_SET(AMI_BLITTER);
262 AMIGAHW_SET(AMI_AUDIO);
263 AMIGAHW_SET(AMI_FLOPPY);
264 AMIGAHW_SET(AMI_KEYBOARD);
265 AMIGAHW_SET(AMI_MOUSE);
266 AMIGAHW_SET(AMI_SERIAL);
267 AMIGAHW_SET(AMI_PARALLEL);
268 AMIGAHW_SET(CHIP_RAM);
269 AMIGAHW_SET(PAULA);
270
271 switch (amiga_chipset) {
272 case CS_OCS:
273 case CS_ECS:
274 case CS_AGA:
275 switch (amiga_custom.deniseid & 0xf) {
276 case 0x0c:
277 AMIGAHW_SET(DENISE_HR);
278 break;
279 case 0x08:
280 AMIGAHW_SET(LISA);
281 break;
282 }
283 break;
284 default:
285 AMIGAHW_SET(DENISE);
286 break;
287 }
288 switch ((amiga_custom.vposr>>8) & 0x7f) {
289 case 0x00:
290 AMIGAHW_SET(AGNUS_PAL);
291 break;
292 case 0x10:
293 AMIGAHW_SET(AGNUS_NTSC);
294 break;
295 case 0x20:
296 case 0x21:
297 AMIGAHW_SET(AGNUS_HR_PAL);
298 break;
299 case 0x30:
300 case 0x31:
301 AMIGAHW_SET(AGNUS_HR_NTSC);
302 break;
303 case 0x22:
304 case 0x23:
305 AMIGAHW_SET(ALICE_PAL);
306 break;
307 case 0x32:
308 case 0x33:
309 AMIGAHW_SET(ALICE_NTSC);
310 break;
311 }
312 AMIGAHW_SET(ZORRO);
313 break;
314
315 case AMI_DRACO:
316 panic("No support for Draco yet");
317
318 default:
319 panic("Unknown Amiga Model");
320 }
321
322#define AMIGAHW_ANNOUNCE(name, str) \
323 if (AMIGAHW_PRESENT(name)) \
324 printk(str)
325
326 AMIGAHW_ANNOUNCE(AMI_VIDEO, "VIDEO ");
327 AMIGAHW_ANNOUNCE(AMI_BLITTER, "BLITTER ");
328 AMIGAHW_ANNOUNCE(AMBER_FF, "AMBER_FF ");
329 AMIGAHW_ANNOUNCE(AMI_AUDIO, "AUDIO ");
330 AMIGAHW_ANNOUNCE(AMI_FLOPPY, "FLOPPY ");
331 AMIGAHW_ANNOUNCE(A3000_SCSI, "A3000_SCSI ");
332 AMIGAHW_ANNOUNCE(A4000_SCSI, "A4000_SCSI ");
333 AMIGAHW_ANNOUNCE(A1200_IDE, "A1200_IDE ");
334 AMIGAHW_ANNOUNCE(A4000_IDE, "A4000_IDE ");
335 AMIGAHW_ANNOUNCE(CD_ROM, "CD_ROM ");
336 AMIGAHW_ANNOUNCE(AMI_KEYBOARD, "KEYBOARD ");
337 AMIGAHW_ANNOUNCE(AMI_MOUSE, "MOUSE ");
338 AMIGAHW_ANNOUNCE(AMI_SERIAL, "SERIAL ");
339 AMIGAHW_ANNOUNCE(AMI_PARALLEL, "PARALLEL ");
340 AMIGAHW_ANNOUNCE(A2000_CLK, "A2000_CLK ");
341 AMIGAHW_ANNOUNCE(A3000_CLK, "A3000_CLK ");
342 AMIGAHW_ANNOUNCE(CHIP_RAM, "CHIP_RAM ");
343 AMIGAHW_ANNOUNCE(PAULA, "PAULA ");
344 AMIGAHW_ANNOUNCE(DENISE, "DENISE ");
345 AMIGAHW_ANNOUNCE(DENISE_HR, "DENISE_HR ");
346 AMIGAHW_ANNOUNCE(LISA, "LISA ");
347 AMIGAHW_ANNOUNCE(AGNUS_PAL, "AGNUS_PAL ");
348 AMIGAHW_ANNOUNCE(AGNUS_NTSC, "AGNUS_NTSC ");
349 AMIGAHW_ANNOUNCE(AGNUS_HR_PAL, "AGNUS_HR_PAL ");
350 AMIGAHW_ANNOUNCE(AGNUS_HR_NTSC, "AGNUS_HR_NTSC ");
351 AMIGAHW_ANNOUNCE(ALICE_PAL, "ALICE_PAL ");
352 AMIGAHW_ANNOUNCE(ALICE_NTSC, "ALICE_NTSC ");
353 AMIGAHW_ANNOUNCE(MAGIC_REKICK, "MAGIC_REKICK ");
354 AMIGAHW_ANNOUNCE(PCMCIA, "PCMCIA ");
355 if (AMIGAHW_PRESENT(ZORRO))
356 printk("ZORRO%s ", AMIGAHW_PRESENT(ZORRO3) ? "3" : "");
357 printk("\n");
358
359#undef AMIGAHW_ANNOUNCE
360}
361
362 /*
363 * Setup the Amiga configuration info
364 */
365
366void __init config_amiga(void)
367{
368 int i;
369
370 amiga_identify();
371
372 /* Yuk, we don't have PCI memory */
373 iomem_resource.name = "Memory";
374 for (i = 0; i < 4; i++)
375 request_resource(&iomem_resource, &((struct resource *)&mb_resources)[i]);
376
377 mach_sched_init = amiga_sched_init;
378 mach_init_IRQ = amiga_init_IRQ;
379 mach_get_model = amiga_get_model;
380 mach_get_hardware_list = amiga_get_hardware_list;
381 mach_gettimeoffset = amiga_gettimeoffset;
382
383 /*
384 * default MAX_DMA=0xffffffff on all machines. If we don't do so, the SCSI
385 * code will not be able to allocate any mem for transfers, unless we are
386 * dealing with a Z2 mem only system. /Jes
387 */
388 mach_max_dma_address = 0xffffffff;
389
390 mach_reset = amiga_reset;
391#if defined(CONFIG_INPUT_M68K_BEEP) || defined(CONFIG_INPUT_M68K_BEEP_MODULE)
392 mach_beep = amiga_mksound;
393#endif
394
395#ifdef CONFIG_HEARTBEAT
396 mach_heartbeat = amiga_heartbeat;
397#endif
398
399 /* Fill in the clock value (based on the 700 kHz E-Clock) */
400 amiga_colorclock = 5*amiga_eclock; /* 3.5 MHz */
401
402 /* clear all DMA bits */
403 amiga_custom.dmacon = DMAF_ALL;
404 /* ensure that the DMA master bit is set */
405 amiga_custom.dmacon = DMAF_SETCLR | DMAF_MASTER;
406
407 /* don't use Z2 RAM as system memory on Z3 capable machines */
408 if (AMIGAHW_PRESENT(ZORRO3)) {
409 int i, j;
410 u32 disabled_z2mem = 0;
411
412 for (i = 0; i < m68k_num_memory; i++) {
413 if (m68k_memory[i].addr < 16*1024*1024) {
414 if (i == 0) {
415 /* don't cut off the branch we're sitting on */
416 printk("Warning: kernel runs in Zorro II memory\n");
417 continue;
418 }
419 disabled_z2mem += m68k_memory[i].size;
420 m68k_num_memory--;
421 for (j = i; j < m68k_num_memory; j++)
422 m68k_memory[j] = m68k_memory[j+1];
423 i--;
424 }
425 }
426 if (disabled_z2mem)
427 printk("%dK of Zorro II memory will not be used as system memory\n",
428 disabled_z2mem>>10);
429 }
430
431 /* request all RAM */
432 for (i = 0; i < m68k_num_memory; i++) {
433 ram_resource[i].name =
434 (m68k_memory[i].addr >= 0x01000000) ? "32-bit Fast RAM" :
435 (m68k_memory[i].addr < 0x00c00000) ? "16-bit Fast RAM" :
436 "16-bit Slow RAM";
437 ram_resource[i].start = m68k_memory[i].addr;
438 ram_resource[i].end = m68k_memory[i].addr+m68k_memory[i].size-1;
439 request_resource(&iomem_resource, &ram_resource[i]);
440 }
441
442 /* initialize chipram allocator */
443 amiga_chip_init();
444
445 /* our beloved beeper */
446 if (AMIGAHW_PRESENT(AMI_AUDIO))
447 amiga_init_sound();
448
449 /*
450 * if it is an A3000, set the magic bit that forces
451 * a hard rekick
452 */
453 if (AMIGAHW_PRESENT(MAGIC_REKICK))
454 *(unsigned char *)ZTWO_VADDR(0xde0002) |= 0x80;
455}
456
457static unsigned short jiffy_ticks;
458
459static void __init amiga_sched_init(irq_handler_t timer_routine)
460{
461 static struct resource sched_res = {
462 .name = "timer", .start = 0x00bfd400, .end = 0x00bfd5ff,
463 };
464 jiffy_ticks = DIV_ROUND_CLOSEST(amiga_eclock, HZ);
465
466 if (request_resource(&mb_resources._ciab, &sched_res))
467 printk("Cannot allocate ciab.ta{lo,hi}\n");
468 ciab.cra &= 0xC0; /* turn off timer A, continuous mode, from Eclk */
469 ciab.talo = jiffy_ticks % 256;
470 ciab.tahi = jiffy_ticks / 256;
471
472 /* install interrupt service routine for CIAB Timer A
473 *
474 * Please don't change this to use ciaa, as it interferes with the
475 * SCSI code. We'll have to take a look at this later
476 */
477 if (request_irq(IRQ_AMIGA_CIAB_TA, timer_routine, 0, "timer", NULL))
478 pr_err("Couldn't register timer interrupt\n");
479 /* start timer */
480 ciab.cra |= 0x11;
481}
482
483#define TICK_SIZE 10000
484
485/* This is always executed with interrupts disabled. */
486static unsigned long amiga_gettimeoffset(void)
487{
488 unsigned short hi, lo, hi2;
489 unsigned long ticks, offset = 0;
490
491 /* read CIA B timer A current value */
492 hi = ciab.tahi;
493 lo = ciab.talo;
494 hi2 = ciab.tahi;
495
496 if (hi != hi2) {
497 lo = ciab.talo;
498 hi = hi2;
499 }
500
501 ticks = hi << 8 | lo;
502
503 if (ticks > jiffy_ticks / 2)
504 /* check for pending interrupt */
505 if (cia_set_irq(&ciab_base, 0) & CIA_ICR_TA)
506 offset = 10000;
507
508 ticks = jiffy_ticks - ticks;
509 ticks = (10000 * ticks) / jiffy_ticks;
510
511 return ticks + offset;
512}
513
514static NORET_TYPE void amiga_reset(void)
515 ATTRIB_NORET;
516
517static void amiga_reset(void)
518{
519 unsigned long jmp_addr040 = virt_to_phys(&&jmp_addr_label040);
520 unsigned long jmp_addr = virt_to_phys(&&jmp_addr_label);
521
522 local_irq_disable();
523 if (CPU_IS_040_OR_060)
524 /* Setup transparent translation registers for mapping
525 * of 16 MB kernel segment before disabling translation
526 */
527 asm volatile ("\n"
528 " move.l %0,%%d0\n"
529 " and.l #0xff000000,%%d0\n"
530 " or.w #0xe020,%%d0\n" /* map 16 MB, enable, cacheable */
531 " .chip 68040\n"
532 " movec %%d0,%%itt0\n"
533 " movec %%d0,%%dtt0\n"
534 " .chip 68k\n"
535 " jmp %0@\n"
536 : /* no outputs */
537 : "a" (jmp_addr040)
538 : "d0");
539 else
540 /* for 680[23]0, just disable translation and jump to the physical
541 * address of the label
542 */
543 asm volatile ("\n"
544 " pmove %%tc,%@\n"
545 " bclr #7,%@\n"
546 " pmove %@,%%tc\n"
547 " jmp %0@\n"
548 : /* no outputs */
549 : "a" (jmp_addr));
550jmp_addr_label040:
551 /* disable translation on '040 now */
552 asm volatile ("\n"
553 " moveq #0,%%d0\n"
554 " .chip 68040\n"
555 " movec %%d0,%%tc\n" /* disable MMU */
556 " .chip 68k\n"
557 : /* no outputs */
558 : /* no inputs */
559 : "d0");
560
561 jmp_addr_label:
562 /* pickup reset address from AmigaOS ROM, reset devices and jump
563 * to reset address
564 */
565 asm volatile ("\n"
566 " move.w #0x2700,%sr\n"
567 " lea 0x01000000,%a0\n"
568 " sub.l %a0@(-0x14),%a0\n"
569 " move.l %a0@(4),%a0\n"
570 " subq.l #2,%a0\n"
571 " jra 1f\n"
572 /* align on a longword boundary */
573 " " __ALIGN_STR "\n"
574 "1:\n"
575 " reset\n"
576 " jmp %a0@");
577
578 for (;;)
579 ;
580}
581
582
583 /*
584 * Debugging
585 */
586
587#define SAVEKMSG_MAXMEM 128*1024
588
589#define SAVEKMSG_MAGIC1 0x53415645 /* 'SAVE' */
590#define SAVEKMSG_MAGIC2 0x4B4D5347 /* 'KMSG' */
591
592struct savekmsg {
593 unsigned long magic1; /* SAVEKMSG_MAGIC1 */
594 unsigned long magic2; /* SAVEKMSG_MAGIC2 */
595 unsigned long magicptr; /* address of magic1 */
596 unsigned long size;
597 char data[0];
598};
599
600static struct savekmsg *savekmsg;
601
602static void amiga_mem_console_write(struct console *co, const char *s,
603 unsigned int count)
604{
605 if (savekmsg->size + count <= SAVEKMSG_MAXMEM-sizeof(struct savekmsg)) {
606 memcpy(savekmsg->data + savekmsg->size, s, count);
607 savekmsg->size += count;
608 }
609}
610
611static int __init amiga_savekmsg_setup(char *arg)
612{
613 if (!MACH_IS_AMIGA || strcmp(arg, "mem"))
614 return 0;
615
616 if (amiga_chip_size < SAVEKMSG_MAXMEM) {
617 pr_err("Not enough chipram for debugging\n");
618 return -ENOMEM;
619 }
620
621 /* Just steal the block, the chipram allocator isn't functional yet */
622 amiga_chip_size -= SAVEKMSG_MAXMEM;
623 savekmsg = (void *)ZTWO_VADDR(CHIP_PHYSADDR + amiga_chip_size);
624 savekmsg->magic1 = SAVEKMSG_MAGIC1;
625 savekmsg->magic2 = SAVEKMSG_MAGIC2;
626 savekmsg->magicptr = ZTWO_PADDR(savekmsg);
627 savekmsg->size = 0;
628
629 amiga_console_driver.write = amiga_mem_console_write;
630 register_console(&amiga_console_driver);
631 return 0;
632}
633
634early_param("debug", amiga_savekmsg_setup);
635
636static void amiga_serial_putc(char c)
637{
638 amiga_custom.serdat = (unsigned char)c | 0x100;
639 while (!(amiga_custom.serdatr & 0x2000))
640 ;
641}
642
643static void amiga_serial_console_write(struct console *co, const char *s,
644 unsigned int count)
645{
646 while (count--) {
647 if (*s == '\n')
648 amiga_serial_putc('\r');
649 amiga_serial_putc(*s++);
650 }
651}
652
653#if 0
654void amiga_serial_puts(const char *s)
655{
656 amiga_serial_console_write(NULL, s, strlen(s));
657}
658
659int amiga_serial_console_wait_key(struct console *co)
660{
661 int ch;
662
663 while (!(amiga_custom.intreqr & IF_RBF))
664 barrier();
665 ch = amiga_custom.serdatr & 0xff;
666 /* clear the interrupt, so that another character can be read */
667 amiga_custom.intreq = IF_RBF;
668 return ch;
669}
670
671void amiga_serial_gets(struct console *co, char *s, int len)
672{
673 int ch, cnt = 0;
674
675 while (1) {
676 ch = amiga_serial_console_wait_key(co);
677
678 /* Check for backspace. */
679 if (ch == 8 || ch == 127) {
680 if (cnt == 0) {
681 amiga_serial_putc('\007');
682 continue;
683 }
684 cnt--;
685 amiga_serial_puts("\010 \010");
686 continue;
687 }
688
689 /* Check for enter. */
690 if (ch == 10 || ch == 13)
691 break;
692
693 /* See if line is too long. */
694 if (cnt >= len + 1) {
695 amiga_serial_putc(7);
696 cnt--;
697 continue;
698 }
699
700 /* Store and echo character. */
701 s[cnt++] = ch;
702 amiga_serial_putc(ch);
703 }
704 /* Print enter. */
705 amiga_serial_puts("\r\n");
706 s[cnt] = 0;
707}
708#endif
709
710static int __init amiga_debug_setup(char *arg)
711{
712 if (MACH_IS_AMIGA && !strcmp(arg, "ser")) {
713 /* no initialization required (?) */
714 amiga_console_driver.write = amiga_serial_console_write;
715 register_console(&amiga_console_driver);
716 }
717 return 0;
718}
719
720early_param("debug", amiga_debug_setup);
721
722#ifdef CONFIG_HEARTBEAT
723static void amiga_heartbeat(int on)
724{
725 if (on)
726 ciaa.pra &= ~2;
727 else
728 ciaa.pra |= 2;
729}
730#endif
731
732 /*
733 * Amiga specific parts of /proc
734 */
735
736static void amiga_get_model(char *model)
737{
738 strcpy(model, amiga_model_name);
739}
740
741
742static void amiga_get_hardware_list(struct seq_file *m)
743{
744 if (AMIGAHW_PRESENT(CHIP_RAM))
745 seq_printf(m, "Chip RAM:\t%ldK\n", amiga_chip_size>>10);
746 seq_printf(m, "PS Freq:\t%dHz\nEClock Freq:\t%ldHz\n",
747 amiga_psfreq, amiga_eclock);
748 if (AMIGAHW_PRESENT(AMI_VIDEO)) {
749 char *type;
750 switch (amiga_chipset) {
751 case CS_OCS:
752 type = "OCS";
753 break;
754 case CS_ECS:
755 type = "ECS";
756 break;
757 case CS_AGA:
758 type = "AGA";
759 break;
760 default:
761 type = "Old or Unknown";
762 break;
763 }
764 seq_printf(m, "Graphics:\t%s\n", type);
765 }
766
767#define AMIGAHW_ANNOUNCE(name, str) \
768 if (AMIGAHW_PRESENT(name)) \
769 seq_printf (m, "\t%s\n", str)
770
771 seq_printf (m, "Detected hardware:\n");
772
773 AMIGAHW_ANNOUNCE(AMI_VIDEO, "Amiga Video");
774 AMIGAHW_ANNOUNCE(AMI_BLITTER, "Blitter");
775 AMIGAHW_ANNOUNCE(AMBER_FF, "Amber Flicker Fixer");
776 AMIGAHW_ANNOUNCE(AMI_AUDIO, "Amiga Audio");
777 AMIGAHW_ANNOUNCE(AMI_FLOPPY, "Floppy Controller");
778 AMIGAHW_ANNOUNCE(A3000_SCSI, "SCSI Controller WD33C93 (A3000 style)");
779 AMIGAHW_ANNOUNCE(A4000_SCSI, "SCSI Controller NCR53C710 (A4000T style)");
780 AMIGAHW_ANNOUNCE(A1200_IDE, "IDE Interface (A1200 style)");
781 AMIGAHW_ANNOUNCE(A4000_IDE, "IDE Interface (A4000 style)");
782 AMIGAHW_ANNOUNCE(CD_ROM, "Internal CD ROM drive");
783 AMIGAHW_ANNOUNCE(AMI_KEYBOARD, "Keyboard");
784 AMIGAHW_ANNOUNCE(AMI_MOUSE, "Mouse Port");
785 AMIGAHW_ANNOUNCE(AMI_SERIAL, "Serial Port");
786 AMIGAHW_ANNOUNCE(AMI_PARALLEL, "Parallel Port");
787 AMIGAHW_ANNOUNCE(A2000_CLK, "Hardware Clock (A2000 style)");
788 AMIGAHW_ANNOUNCE(A3000_CLK, "Hardware Clock (A3000 style)");
789 AMIGAHW_ANNOUNCE(CHIP_RAM, "Chip RAM");
790 AMIGAHW_ANNOUNCE(PAULA, "Paula 8364");
791 AMIGAHW_ANNOUNCE(DENISE, "Denise 8362");
792 AMIGAHW_ANNOUNCE(DENISE_HR, "Denise 8373");
793 AMIGAHW_ANNOUNCE(LISA, "Lisa 8375");
794 AMIGAHW_ANNOUNCE(AGNUS_PAL, "Normal/Fat PAL Agnus 8367/8371");
795 AMIGAHW_ANNOUNCE(AGNUS_NTSC, "Normal/Fat NTSC Agnus 8361/8370");
796 AMIGAHW_ANNOUNCE(AGNUS_HR_PAL, "Fat Hires PAL Agnus 8372");
797 AMIGAHW_ANNOUNCE(AGNUS_HR_NTSC, "Fat Hires NTSC Agnus 8372");
798 AMIGAHW_ANNOUNCE(ALICE_PAL, "PAL Alice 8374");
799 AMIGAHW_ANNOUNCE(ALICE_NTSC, "NTSC Alice 8374");
800 AMIGAHW_ANNOUNCE(MAGIC_REKICK, "Magic Hard Rekick");
801 AMIGAHW_ANNOUNCE(PCMCIA, "PCMCIA Slot");
802#ifdef CONFIG_ZORRO
803 if (AMIGAHW_PRESENT(ZORRO))
804 seq_printf(m, "\tZorro II%s AutoConfig: %d Expansion "
805 "Device%s\n",
806 AMIGAHW_PRESENT(ZORRO3) ? "I" : "",
807 zorro_num_autocon, zorro_num_autocon == 1 ? "" : "s");
808#endif /* CONFIG_ZORRO */
809
810#undef AMIGAHW_ANNOUNCE
811}
812
813/*
814 * The Amiga keyboard driver needs key_maps, but we cannot export it in
815 * drivers/char/defkeymap.c, as it is autogenerated
816 */
817#ifdef CONFIG_HW_CONSOLE
818EXPORT_SYMBOL_GPL(key_maps);
819#endif
1/*
2 * linux/arch/m68k/amiga/config.c
3 *
4 * Copyright (C) 1993 Hamish Macdonald
5 *
6 * This file is subject to the terms and conditions of the GNU General Public
7 * License. See the file COPYING in the main directory of this archive
8 * for more details.
9 */
10
11/*
12 * Miscellaneous Amiga stuff
13 */
14
15#include <linux/types.h>
16#include <linux/kernel.h>
17#include <linux/mm.h>
18#include <linux/seq_file.h>
19#include <linux/tty.h>
20#include <linux/clocksource.h>
21#include <linux/console.h>
22#include <linux/rtc.h>
23#include <linux/init.h>
24#include <linux/vt_kern.h>
25#include <linux/delay.h>
26#include <linux/interrupt.h>
27#include <linux/zorro.h>
28#include <linux/module.h>
29#include <linux/keyboard.h>
30
31#include <asm/bootinfo.h>
32#include <asm/bootinfo-amiga.h>
33#include <asm/byteorder.h>
34#include <asm/setup.h>
35#include <asm/pgtable.h>
36#include <asm/amigahw.h>
37#include <asm/amigaints.h>
38#include <asm/irq.h>
39#include <asm/machdep.h>
40#include <asm/io.h>
41
42static unsigned long amiga_model;
43
44unsigned long amiga_eclock;
45EXPORT_SYMBOL(amiga_eclock);
46
47unsigned long amiga_colorclock;
48EXPORT_SYMBOL(amiga_colorclock);
49
50unsigned long amiga_chipset;
51EXPORT_SYMBOL(amiga_chipset);
52
53unsigned char amiga_vblank;
54EXPORT_SYMBOL(amiga_vblank);
55
56static unsigned char amiga_psfreq;
57
58struct amiga_hw_present amiga_hw_present;
59EXPORT_SYMBOL(amiga_hw_present);
60
61static char s_a500[] __initdata = "A500";
62static char s_a500p[] __initdata = "A500+";
63static char s_a600[] __initdata = "A600";
64static char s_a1000[] __initdata = "A1000";
65static char s_a1200[] __initdata = "A1200";
66static char s_a2000[] __initdata = "A2000";
67static char s_a2500[] __initdata = "A2500";
68static char s_a3000[] __initdata = "A3000";
69static char s_a3000t[] __initdata = "A3000T";
70static char s_a3000p[] __initdata = "A3000+";
71static char s_a4000[] __initdata = "A4000";
72static char s_a4000t[] __initdata = "A4000T";
73static char s_cdtv[] __initdata = "CDTV";
74static char s_cd32[] __initdata = "CD32";
75static char s_draco[] __initdata = "Draco";
76static char *amiga_models[] __initdata = {
77 [AMI_500-AMI_500] = s_a500,
78 [AMI_500PLUS-AMI_500] = s_a500p,
79 [AMI_600-AMI_500] = s_a600,
80 [AMI_1000-AMI_500] = s_a1000,
81 [AMI_1200-AMI_500] = s_a1200,
82 [AMI_2000-AMI_500] = s_a2000,
83 [AMI_2500-AMI_500] = s_a2500,
84 [AMI_3000-AMI_500] = s_a3000,
85 [AMI_3000T-AMI_500] = s_a3000t,
86 [AMI_3000PLUS-AMI_500] = s_a3000p,
87 [AMI_4000-AMI_500] = s_a4000,
88 [AMI_4000T-AMI_500] = s_a4000t,
89 [AMI_CDTV-AMI_500] = s_cdtv,
90 [AMI_CD32-AMI_500] = s_cd32,
91 [AMI_DRACO-AMI_500] = s_draco,
92};
93
94static char amiga_model_name[13] = "Amiga ";
95
96static void amiga_sched_init(irq_handler_t handler);
97static void amiga_get_model(char *model);
98static void amiga_get_hardware_list(struct seq_file *m);
99extern void amiga_mksound(unsigned int count, unsigned int ticks);
100static void amiga_reset(void);
101extern void amiga_init_sound(void);
102static void amiga_mem_console_write(struct console *co, const char *b,
103 unsigned int count);
104#ifdef CONFIG_HEARTBEAT
105static void amiga_heartbeat(int on);
106#endif
107
108static struct console amiga_console_driver = {
109 .name = "debug",
110 .flags = CON_PRINTBUFFER,
111 .index = -1,
112};
113
114
115 /*
116 * Motherboard Resources present in all Amiga models
117 */
118
119static struct {
120 struct resource _ciab, _ciaa, _custom, _kickstart;
121} mb_resources = {
122 ._ciab = {
123 .name = "CIA B", .start = 0x00bfd000, .end = 0x00bfdfff
124 },
125 ._ciaa = {
126 .name = "CIA A", .start = 0x00bfe000, .end = 0x00bfefff
127 },
128 ._custom = {
129 .name = "Custom I/O", .start = 0x00dff000, .end = 0x00dfffff
130 },
131 ._kickstart = {
132 .name = "Kickstart ROM", .start = 0x00f80000, .end = 0x00ffffff
133 }
134};
135
136static struct resource ram_resource[NUM_MEMINFO];
137
138
139 /*
140 * Parse an Amiga-specific record in the bootinfo
141 */
142
143int __init amiga_parse_bootinfo(const struct bi_record *record)
144{
145 int unknown = 0;
146 const void *data = record->data;
147
148 switch (be16_to_cpu(record->tag)) {
149 case BI_AMIGA_MODEL:
150 amiga_model = be32_to_cpup(data);
151 break;
152
153 case BI_AMIGA_ECLOCK:
154 amiga_eclock = be32_to_cpup(data);
155 break;
156
157 case BI_AMIGA_CHIPSET:
158 amiga_chipset = be32_to_cpup(data);
159 break;
160
161 case BI_AMIGA_CHIP_SIZE:
162 amiga_chip_size = be32_to_cpup(data);
163 break;
164
165 case BI_AMIGA_VBLANK:
166 amiga_vblank = *(const __u8 *)data;
167 break;
168
169 case BI_AMIGA_PSFREQ:
170 amiga_psfreq = *(const __u8 *)data;
171 break;
172
173 case BI_AMIGA_AUTOCON:
174#ifdef CONFIG_ZORRO
175 if (zorro_num_autocon < ZORRO_NUM_AUTO) {
176 const struct ConfigDev *cd = data;
177 struct zorro_dev_init *dev = &zorro_autocon_init[zorro_num_autocon++];
178 dev->rom = cd->cd_Rom;
179 dev->slotaddr = be16_to_cpu(cd->cd_SlotAddr);
180 dev->slotsize = be16_to_cpu(cd->cd_SlotSize);
181 dev->boardaddr = be32_to_cpu(cd->cd_BoardAddr);
182 dev->boardsize = be32_to_cpu(cd->cd_BoardSize);
183 } else
184 pr_warn("amiga_parse_bootinfo: too many AutoConfig devices\n");
185#endif /* CONFIG_ZORRO */
186 break;
187
188 case BI_AMIGA_SERPER:
189 /* serial port period: ignored here */
190 break;
191
192 default:
193 unknown = 1;
194 }
195 return unknown;
196}
197
198 /*
199 * Identify builtin hardware
200 */
201
202static void __init amiga_identify(void)
203{
204 /* Fill in some default values, if necessary */
205 if (amiga_eclock == 0)
206 amiga_eclock = 709379;
207
208 memset(&amiga_hw_present, 0, sizeof(amiga_hw_present));
209
210 pr_info("Amiga hardware found: ");
211 if (amiga_model >= AMI_500 && amiga_model <= AMI_DRACO) {
212 pr_cont("[%s] ", amiga_models[amiga_model-AMI_500]);
213 strcat(amiga_model_name, amiga_models[amiga_model-AMI_500]);
214 }
215
216 switch (amiga_model) {
217 case AMI_UNKNOWN:
218 goto Generic;
219
220 case AMI_600:
221 case AMI_1200:
222 AMIGAHW_SET(A1200_IDE);
223 AMIGAHW_SET(PCMCIA);
224 case AMI_500:
225 case AMI_500PLUS:
226 case AMI_1000:
227 case AMI_2000:
228 case AMI_2500:
229 AMIGAHW_SET(A2000_CLK); /* Is this correct for all models? */
230 goto Generic;
231
232 case AMI_3000:
233 case AMI_3000T:
234 AMIGAHW_SET(AMBER_FF);
235 AMIGAHW_SET(MAGIC_REKICK);
236 /* fall through */
237 case AMI_3000PLUS:
238 AMIGAHW_SET(A3000_SCSI);
239 AMIGAHW_SET(A3000_CLK);
240 AMIGAHW_SET(ZORRO3);
241 goto Generic;
242
243 case AMI_4000T:
244 AMIGAHW_SET(A4000_SCSI);
245 /* fall through */
246 case AMI_4000:
247 AMIGAHW_SET(A4000_IDE);
248 AMIGAHW_SET(A3000_CLK);
249 AMIGAHW_SET(ZORRO3);
250 goto Generic;
251
252 case AMI_CDTV:
253 case AMI_CD32:
254 AMIGAHW_SET(CD_ROM);
255 AMIGAHW_SET(A2000_CLK); /* Is this correct? */
256 goto Generic;
257
258 Generic:
259 AMIGAHW_SET(AMI_VIDEO);
260 AMIGAHW_SET(AMI_BLITTER);
261 AMIGAHW_SET(AMI_AUDIO);
262 AMIGAHW_SET(AMI_FLOPPY);
263 AMIGAHW_SET(AMI_KEYBOARD);
264 AMIGAHW_SET(AMI_MOUSE);
265 AMIGAHW_SET(AMI_SERIAL);
266 AMIGAHW_SET(AMI_PARALLEL);
267 AMIGAHW_SET(CHIP_RAM);
268 AMIGAHW_SET(PAULA);
269
270 switch (amiga_chipset) {
271 case CS_OCS:
272 case CS_ECS:
273 case CS_AGA:
274 switch (amiga_custom.deniseid & 0xf) {
275 case 0x0c:
276 AMIGAHW_SET(DENISE_HR);
277 break;
278 case 0x08:
279 AMIGAHW_SET(LISA);
280 break;
281 }
282 break;
283 default:
284 AMIGAHW_SET(DENISE);
285 break;
286 }
287 switch ((amiga_custom.vposr>>8) & 0x7f) {
288 case 0x00:
289 AMIGAHW_SET(AGNUS_PAL);
290 break;
291 case 0x10:
292 AMIGAHW_SET(AGNUS_NTSC);
293 break;
294 case 0x20:
295 case 0x21:
296 AMIGAHW_SET(AGNUS_HR_PAL);
297 break;
298 case 0x30:
299 case 0x31:
300 AMIGAHW_SET(AGNUS_HR_NTSC);
301 break;
302 case 0x22:
303 case 0x23:
304 AMIGAHW_SET(ALICE_PAL);
305 break;
306 case 0x32:
307 case 0x33:
308 AMIGAHW_SET(ALICE_NTSC);
309 break;
310 }
311 AMIGAHW_SET(ZORRO);
312 break;
313
314 case AMI_DRACO:
315 panic("No support for Draco yet");
316
317 default:
318 panic("Unknown Amiga Model");
319 }
320
321#define AMIGAHW_ANNOUNCE(name, str) \
322 if (AMIGAHW_PRESENT(name)) \
323 pr_cont(str)
324
325 AMIGAHW_ANNOUNCE(AMI_VIDEO, "VIDEO ");
326 AMIGAHW_ANNOUNCE(AMI_BLITTER, "BLITTER ");
327 AMIGAHW_ANNOUNCE(AMBER_FF, "AMBER_FF ");
328 AMIGAHW_ANNOUNCE(AMI_AUDIO, "AUDIO ");
329 AMIGAHW_ANNOUNCE(AMI_FLOPPY, "FLOPPY ");
330 AMIGAHW_ANNOUNCE(A3000_SCSI, "A3000_SCSI ");
331 AMIGAHW_ANNOUNCE(A4000_SCSI, "A4000_SCSI ");
332 AMIGAHW_ANNOUNCE(A1200_IDE, "A1200_IDE ");
333 AMIGAHW_ANNOUNCE(A4000_IDE, "A4000_IDE ");
334 AMIGAHW_ANNOUNCE(CD_ROM, "CD_ROM ");
335 AMIGAHW_ANNOUNCE(AMI_KEYBOARD, "KEYBOARD ");
336 AMIGAHW_ANNOUNCE(AMI_MOUSE, "MOUSE ");
337 AMIGAHW_ANNOUNCE(AMI_SERIAL, "SERIAL ");
338 AMIGAHW_ANNOUNCE(AMI_PARALLEL, "PARALLEL ");
339 AMIGAHW_ANNOUNCE(A2000_CLK, "A2000_CLK ");
340 AMIGAHW_ANNOUNCE(A3000_CLK, "A3000_CLK ");
341 AMIGAHW_ANNOUNCE(CHIP_RAM, "CHIP_RAM ");
342 AMIGAHW_ANNOUNCE(PAULA, "PAULA ");
343 AMIGAHW_ANNOUNCE(DENISE, "DENISE ");
344 AMIGAHW_ANNOUNCE(DENISE_HR, "DENISE_HR ");
345 AMIGAHW_ANNOUNCE(LISA, "LISA ");
346 AMIGAHW_ANNOUNCE(AGNUS_PAL, "AGNUS_PAL ");
347 AMIGAHW_ANNOUNCE(AGNUS_NTSC, "AGNUS_NTSC ");
348 AMIGAHW_ANNOUNCE(AGNUS_HR_PAL, "AGNUS_HR_PAL ");
349 AMIGAHW_ANNOUNCE(AGNUS_HR_NTSC, "AGNUS_HR_NTSC ");
350 AMIGAHW_ANNOUNCE(ALICE_PAL, "ALICE_PAL ");
351 AMIGAHW_ANNOUNCE(ALICE_NTSC, "ALICE_NTSC ");
352 AMIGAHW_ANNOUNCE(MAGIC_REKICK, "MAGIC_REKICK ");
353 AMIGAHW_ANNOUNCE(PCMCIA, "PCMCIA ");
354 if (AMIGAHW_PRESENT(ZORRO))
355 pr_cont("ZORRO%s ", AMIGAHW_PRESENT(ZORRO3) ? "3" : "");
356 pr_cont("\n");
357
358#undef AMIGAHW_ANNOUNCE
359}
360
361
362static unsigned long amiga_random_get_entropy(void)
363{
364 /* VPOSR/VHPOSR provide at least 17 bits of data changing at 1.79 MHz */
365 return *(unsigned long *)&amiga_custom.vposr;
366}
367
368
369 /*
370 * Setup the Amiga configuration info
371 */
372
373void __init config_amiga(void)
374{
375 int i;
376
377 amiga_identify();
378
379 /* Yuk, we don't have PCI memory */
380 iomem_resource.name = "Memory";
381 for (i = 0; i < 4; i++)
382 request_resource(&iomem_resource, &((struct resource *)&mb_resources)[i]);
383
384 mach_sched_init = amiga_sched_init;
385 mach_init_IRQ = amiga_init_IRQ;
386 mach_get_model = amiga_get_model;
387 mach_get_hardware_list = amiga_get_hardware_list;
388
389 /*
390 * default MAX_DMA=0xffffffff on all machines. If we don't do so, the SCSI
391 * code will not be able to allocate any mem for transfers, unless we are
392 * dealing with a Z2 mem only system. /Jes
393 */
394 mach_max_dma_address = 0xffffffff;
395
396 mach_reset = amiga_reset;
397#if IS_ENABLED(CONFIG_INPUT_M68K_BEEP)
398 mach_beep = amiga_mksound;
399#endif
400
401#ifdef CONFIG_HEARTBEAT
402 mach_heartbeat = amiga_heartbeat;
403#endif
404
405 mach_random_get_entropy = amiga_random_get_entropy;
406
407 /* Fill in the clock value (based on the 700 kHz E-Clock) */
408 amiga_colorclock = 5*amiga_eclock; /* 3.5 MHz */
409
410 /* clear all DMA bits */
411 amiga_custom.dmacon = DMAF_ALL;
412 /* ensure that the DMA master bit is set */
413 amiga_custom.dmacon = DMAF_SETCLR | DMAF_MASTER;
414
415 /* don't use Z2 RAM as system memory on Z3 capable machines */
416 if (AMIGAHW_PRESENT(ZORRO3)) {
417 int i, j;
418 u32 disabled_z2mem = 0;
419
420 for (i = 0; i < m68k_num_memory; i++) {
421 if (m68k_memory[i].addr < 16*1024*1024) {
422 if (i == 0) {
423 /* don't cut off the branch we're sitting on */
424 pr_warn("Warning: kernel runs in Zorro II memory\n");
425 continue;
426 }
427 disabled_z2mem += m68k_memory[i].size;
428 m68k_num_memory--;
429 for (j = i; j < m68k_num_memory; j++)
430 m68k_memory[j] = m68k_memory[j+1];
431 i--;
432 }
433 }
434 if (disabled_z2mem)
435 pr_info("%dK of Zorro II memory will not be used as system memory\n",
436 disabled_z2mem>>10);
437 }
438
439 /* request all RAM */
440 for (i = 0; i < m68k_num_memory; i++) {
441 ram_resource[i].name =
442 (m68k_memory[i].addr >= 0x01000000) ? "32-bit Fast RAM" :
443 (m68k_memory[i].addr < 0x00c00000) ? "16-bit Fast RAM" :
444 "16-bit Slow RAM";
445 ram_resource[i].start = m68k_memory[i].addr;
446 ram_resource[i].end = m68k_memory[i].addr+m68k_memory[i].size-1;
447 request_resource(&iomem_resource, &ram_resource[i]);
448 }
449
450 /* initialize chipram allocator */
451 amiga_chip_init();
452
453 /* our beloved beeper */
454 if (AMIGAHW_PRESENT(AMI_AUDIO))
455 amiga_init_sound();
456
457 /*
458 * if it is an A3000, set the magic bit that forces
459 * a hard rekick
460 */
461 if (AMIGAHW_PRESENT(MAGIC_REKICK))
462 *(unsigned char *)ZTWO_VADDR(0xde0002) |= 0x80;
463}
464
465static u64 amiga_read_clk(struct clocksource *cs);
466
467static struct clocksource amiga_clk = {
468 .name = "ciab",
469 .rating = 250,
470 .read = amiga_read_clk,
471 .mask = CLOCKSOURCE_MASK(32),
472 .flags = CLOCK_SOURCE_IS_CONTINUOUS,
473};
474
475static unsigned short jiffy_ticks;
476static u32 clk_total, clk_offset;
477
478static irqreturn_t ciab_timer_handler(int irq, void *dev_id)
479{
480 irq_handler_t timer_routine = dev_id;
481
482 clk_total += jiffy_ticks;
483 clk_offset = 0;
484 timer_routine(0, NULL);
485
486 return IRQ_HANDLED;
487}
488
489static void __init amiga_sched_init(irq_handler_t timer_routine)
490{
491 static struct resource sched_res = {
492 .name = "timer", .start = 0x00bfd400, .end = 0x00bfd5ff,
493 };
494 jiffy_ticks = DIV_ROUND_CLOSEST(amiga_eclock, HZ);
495
496 if (request_resource(&mb_resources._ciab, &sched_res))
497 pr_warn("Cannot allocate ciab.ta{lo,hi}\n");
498 ciab.cra &= 0xC0; /* turn off timer A, continuous mode, from Eclk */
499 ciab.talo = jiffy_ticks % 256;
500 ciab.tahi = jiffy_ticks / 256;
501
502 /* install interrupt service routine for CIAB Timer A
503 *
504 * Please don't change this to use ciaa, as it interferes with the
505 * SCSI code. We'll have to take a look at this later
506 */
507 if (request_irq(IRQ_AMIGA_CIAB_TA, ciab_timer_handler, IRQF_TIMER,
508 "timer", timer_routine))
509 pr_err("Couldn't register timer interrupt\n");
510 /* start timer */
511 ciab.cra |= 0x11;
512
513 clocksource_register_hz(&amiga_clk, amiga_eclock);
514}
515
516static u64 amiga_read_clk(struct clocksource *cs)
517{
518 unsigned short hi, lo, hi2;
519 unsigned long flags;
520 u32 ticks;
521
522 local_irq_save(flags);
523
524 /* read CIA B timer A current value */
525 hi = ciab.tahi;
526 lo = ciab.talo;
527 hi2 = ciab.tahi;
528
529 if (hi != hi2) {
530 lo = ciab.talo;
531 hi = hi2;
532 }
533
534 ticks = hi << 8 | lo;
535
536 if (ticks > jiffy_ticks / 2)
537 /* check for pending interrupt */
538 if (cia_set_irq(&ciab_base, 0) & CIA_ICR_TA)
539 clk_offset = jiffy_ticks;
540
541 ticks = jiffy_ticks - ticks;
542 ticks += clk_offset + clk_total;
543
544 local_irq_restore(flags);
545
546 return ticks;
547}
548
549static void amiga_reset(void) __noreturn;
550
551static void amiga_reset(void)
552{
553 unsigned long jmp_addr040 = virt_to_phys(&&jmp_addr_label040);
554 unsigned long jmp_addr = virt_to_phys(&&jmp_addr_label);
555
556 local_irq_disable();
557 if (CPU_IS_040_OR_060)
558 /* Setup transparent translation registers for mapping
559 * of 16 MB kernel segment before disabling translation
560 */
561 asm volatile ("\n"
562 " move.l %0,%%d0\n"
563 " and.l #0xff000000,%%d0\n"
564 " or.w #0xe020,%%d0\n" /* map 16 MB, enable, cacheable */
565 " .chip 68040\n"
566 " movec %%d0,%%itt0\n"
567 " movec %%d0,%%dtt0\n"
568 " .chip 68k\n"
569 " jmp %0@\n"
570 : /* no outputs */
571 : "a" (jmp_addr040)
572 : "d0");
573 else
574 /* for 680[23]0, just disable translation and jump to the physical
575 * address of the label
576 */
577 asm volatile ("\n"
578 " pmove %%tc,%@\n"
579 " bclr #7,%@\n"
580 " pmove %@,%%tc\n"
581 " jmp %0@\n"
582 : /* no outputs */
583 : "a" (jmp_addr));
584jmp_addr_label040:
585 /* disable translation on '040 now */
586 asm volatile ("\n"
587 " moveq #0,%%d0\n"
588 " .chip 68040\n"
589 " movec %%d0,%%tc\n" /* disable MMU */
590 " .chip 68k\n"
591 : /* no outputs */
592 : /* no inputs */
593 : "d0");
594
595 jmp_addr_label:
596 /* pickup reset address from AmigaOS ROM, reset devices and jump
597 * to reset address
598 */
599 asm volatile ("\n"
600 " move.w #0x2700,%sr\n"
601 " lea 0x01000000,%a0\n"
602 " sub.l %a0@(-0x14),%a0\n"
603 " move.l %a0@(4),%a0\n"
604 " subq.l #2,%a0\n"
605 " jra 1f\n"
606 /* align on a longword boundary */
607 " " __ALIGN_STR "\n"
608 "1:\n"
609 " reset\n"
610 " jmp %a0@");
611
612 for (;;)
613 ;
614}
615
616
617 /*
618 * Debugging
619 */
620
621#define SAVEKMSG_MAXMEM 128*1024
622
623#define SAVEKMSG_MAGIC1 0x53415645 /* 'SAVE' */
624#define SAVEKMSG_MAGIC2 0x4B4D5347 /* 'KMSG' */
625
626struct savekmsg {
627 unsigned long magic1; /* SAVEKMSG_MAGIC1 */
628 unsigned long magic2; /* SAVEKMSG_MAGIC2 */
629 unsigned long magicptr; /* address of magic1 */
630 unsigned long size;
631 char data[0];
632};
633
634static struct savekmsg *savekmsg;
635
636static void amiga_mem_console_write(struct console *co, const char *s,
637 unsigned int count)
638{
639 if (savekmsg->size + count <= SAVEKMSG_MAXMEM-sizeof(struct savekmsg)) {
640 memcpy(savekmsg->data + savekmsg->size, s, count);
641 savekmsg->size += count;
642 }
643}
644
645static int __init amiga_savekmsg_setup(char *arg)
646{
647 bool registered;
648
649 if (!MACH_IS_AMIGA || strcmp(arg, "mem"))
650 return 0;
651
652 if (amiga_chip_size < SAVEKMSG_MAXMEM) {
653 pr_err("Not enough chipram for debugging\n");
654 return -ENOMEM;
655 }
656
657 /* Just steal the block, the chipram allocator isn't functional yet */
658 amiga_chip_size -= SAVEKMSG_MAXMEM;
659 savekmsg = ZTWO_VADDR(CHIP_PHYSADDR + amiga_chip_size);
660 savekmsg->magic1 = SAVEKMSG_MAGIC1;
661 savekmsg->magic2 = SAVEKMSG_MAGIC2;
662 savekmsg->magicptr = ZTWO_PADDR(savekmsg);
663 savekmsg->size = 0;
664
665 registered = !!amiga_console_driver.write;
666 amiga_console_driver.write = amiga_mem_console_write;
667 if (!registered)
668 register_console(&amiga_console_driver);
669 return 0;
670}
671
672early_param("debug", amiga_savekmsg_setup);
673
674static void amiga_serial_putc(char c)
675{
676 amiga_custom.serdat = (unsigned char)c | 0x100;
677 while (!(amiga_custom.serdatr & 0x2000))
678 ;
679}
680
681static void amiga_serial_console_write(struct console *co, const char *s,
682 unsigned int count)
683{
684 while (count--) {
685 if (*s == '\n')
686 amiga_serial_putc('\r');
687 amiga_serial_putc(*s++);
688 }
689}
690
691#if 0
692void amiga_serial_puts(const char *s)
693{
694 amiga_serial_console_write(NULL, s, strlen(s));
695}
696
697int amiga_serial_console_wait_key(struct console *co)
698{
699 int ch;
700
701 while (!(amiga_custom.intreqr & IF_RBF))
702 barrier();
703 ch = amiga_custom.serdatr & 0xff;
704 /* clear the interrupt, so that another character can be read */
705 amiga_custom.intreq = IF_RBF;
706 return ch;
707}
708
709void amiga_serial_gets(struct console *co, char *s, int len)
710{
711 int ch, cnt = 0;
712
713 while (1) {
714 ch = amiga_serial_console_wait_key(co);
715
716 /* Check for backspace. */
717 if (ch == 8 || ch == 127) {
718 if (cnt == 0) {
719 amiga_serial_putc('\007');
720 continue;
721 }
722 cnt--;
723 amiga_serial_puts("\010 \010");
724 continue;
725 }
726
727 /* Check for enter. */
728 if (ch == 10 || ch == 13)
729 break;
730
731 /* See if line is too long. */
732 if (cnt >= len + 1) {
733 amiga_serial_putc(7);
734 cnt--;
735 continue;
736 }
737
738 /* Store and echo character. */
739 s[cnt++] = ch;
740 amiga_serial_putc(ch);
741 }
742 /* Print enter. */
743 amiga_serial_puts("\r\n");
744 s[cnt] = 0;
745}
746#endif
747
748static int __init amiga_debug_setup(char *arg)
749{
750 bool registered;
751
752 if (!MACH_IS_AMIGA || strcmp(arg, "ser"))
753 return 0;
754
755 /* no initialization required (?) */
756 registered = !!amiga_console_driver.write;
757 amiga_console_driver.write = amiga_serial_console_write;
758 if (!registered)
759 register_console(&amiga_console_driver);
760 return 0;
761}
762
763early_param("debug", amiga_debug_setup);
764
765#ifdef CONFIG_HEARTBEAT
766static void amiga_heartbeat(int on)
767{
768 if (on)
769 ciaa.pra &= ~2;
770 else
771 ciaa.pra |= 2;
772}
773#endif
774
775 /*
776 * Amiga specific parts of /proc
777 */
778
779static void amiga_get_model(char *model)
780{
781 strcpy(model, amiga_model_name);
782}
783
784
785static void amiga_get_hardware_list(struct seq_file *m)
786{
787 if (AMIGAHW_PRESENT(CHIP_RAM))
788 seq_printf(m, "Chip RAM:\t%ldK\n", amiga_chip_size>>10);
789 seq_printf(m, "PS Freq:\t%dHz\nEClock Freq:\t%ldHz\n",
790 amiga_psfreq, amiga_eclock);
791 if (AMIGAHW_PRESENT(AMI_VIDEO)) {
792 char *type;
793 switch (amiga_chipset) {
794 case CS_OCS:
795 type = "OCS";
796 break;
797 case CS_ECS:
798 type = "ECS";
799 break;
800 case CS_AGA:
801 type = "AGA";
802 break;
803 default:
804 type = "Old or Unknown";
805 break;
806 }
807 seq_printf(m, "Graphics:\t%s\n", type);
808 }
809
810#define AMIGAHW_ANNOUNCE(name, str) \
811 if (AMIGAHW_PRESENT(name)) \
812 seq_printf (m, "\t%s\n", str)
813
814 seq_puts(m, "Detected hardware:\n");
815 AMIGAHW_ANNOUNCE(AMI_VIDEO, "Amiga Video");
816 AMIGAHW_ANNOUNCE(AMI_BLITTER, "Blitter");
817 AMIGAHW_ANNOUNCE(AMBER_FF, "Amber Flicker Fixer");
818 AMIGAHW_ANNOUNCE(AMI_AUDIO, "Amiga Audio");
819 AMIGAHW_ANNOUNCE(AMI_FLOPPY, "Floppy Controller");
820 AMIGAHW_ANNOUNCE(A3000_SCSI, "SCSI Controller WD33C93 (A3000 style)");
821 AMIGAHW_ANNOUNCE(A4000_SCSI, "SCSI Controller NCR53C710 (A4000T style)");
822 AMIGAHW_ANNOUNCE(A1200_IDE, "IDE Interface (A1200 style)");
823 AMIGAHW_ANNOUNCE(A4000_IDE, "IDE Interface (A4000 style)");
824 AMIGAHW_ANNOUNCE(CD_ROM, "Internal CD ROM drive");
825 AMIGAHW_ANNOUNCE(AMI_KEYBOARD, "Keyboard");
826 AMIGAHW_ANNOUNCE(AMI_MOUSE, "Mouse Port");
827 AMIGAHW_ANNOUNCE(AMI_SERIAL, "Serial Port");
828 AMIGAHW_ANNOUNCE(AMI_PARALLEL, "Parallel Port");
829 AMIGAHW_ANNOUNCE(A2000_CLK, "Hardware Clock (A2000 style)");
830 AMIGAHW_ANNOUNCE(A3000_CLK, "Hardware Clock (A3000 style)");
831 AMIGAHW_ANNOUNCE(CHIP_RAM, "Chip RAM");
832 AMIGAHW_ANNOUNCE(PAULA, "Paula 8364");
833 AMIGAHW_ANNOUNCE(DENISE, "Denise 8362");
834 AMIGAHW_ANNOUNCE(DENISE_HR, "Denise 8373");
835 AMIGAHW_ANNOUNCE(LISA, "Lisa 8375");
836 AMIGAHW_ANNOUNCE(AGNUS_PAL, "Normal/Fat PAL Agnus 8367/8371");
837 AMIGAHW_ANNOUNCE(AGNUS_NTSC, "Normal/Fat NTSC Agnus 8361/8370");
838 AMIGAHW_ANNOUNCE(AGNUS_HR_PAL, "Fat Hires PAL Agnus 8372");
839 AMIGAHW_ANNOUNCE(AGNUS_HR_NTSC, "Fat Hires NTSC Agnus 8372");
840 AMIGAHW_ANNOUNCE(ALICE_PAL, "PAL Alice 8374");
841 AMIGAHW_ANNOUNCE(ALICE_NTSC, "NTSC Alice 8374");
842 AMIGAHW_ANNOUNCE(MAGIC_REKICK, "Magic Hard Rekick");
843 AMIGAHW_ANNOUNCE(PCMCIA, "PCMCIA Slot");
844#ifdef CONFIG_ZORRO
845 if (AMIGAHW_PRESENT(ZORRO))
846 seq_printf(m, "\tZorro II%s AutoConfig: %d Expansion "
847 "Device%s\n",
848 AMIGAHW_PRESENT(ZORRO3) ? "I" : "",
849 zorro_num_autocon, zorro_num_autocon == 1 ? "" : "s");
850#endif /* CONFIG_ZORRO */
851
852#undef AMIGAHW_ANNOUNCE
853}
854
855/*
856 * The Amiga keyboard driver needs key_maps, but we cannot export it in
857 * drivers/char/defkeymap.c, as it is autogenerated
858 */
859#ifdef CONFIG_HW_CONSOLE
860EXPORT_SYMBOL_GPL(key_maps);
861#endif