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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/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/bootinfo-amiga.h>
32#include <asm/byteorder.h>
33#include <asm/setup.h>
34#include <asm/pgtable.h>
35#include <asm/amigahw.h>
36#include <asm/amigaints.h>
37#include <asm/irq.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 u32 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 __init amiga_parse_bootinfo(const struct bi_record *record)
145{
146 int unknown = 0;
147 const void *data = record->data;
148
149 switch (be16_to_cpu(record->tag)) {
150 case BI_AMIGA_MODEL:
151 amiga_model = be32_to_cpup(data);
152 break;
153
154 case BI_AMIGA_ECLOCK:
155 amiga_eclock = be32_to_cpup(data);
156 break;
157
158 case BI_AMIGA_CHIPSET:
159 amiga_chipset = be32_to_cpup(data);
160 break;
161
162 case BI_AMIGA_CHIP_SIZE:
163 amiga_chip_size = be32_to_cpup(data);
164 break;
165
166 case BI_AMIGA_VBLANK:
167 amiga_vblank = *(const __u8 *)data;
168 break;
169
170 case BI_AMIGA_PSFREQ:
171 amiga_psfreq = *(const __u8 *)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 = data;
178 struct zorro_dev_init *dev = &zorro_autocon_init[zorro_num_autocon++];
179 dev->rom = cd->cd_Rom;
180 dev->slotaddr = be16_to_cpu(cd->cd_SlotAddr);
181 dev->slotsize = be16_to_cpu(cd->cd_SlotSize);
182 dev->boardaddr = be32_to_cpu(cd->cd_BoardAddr);
183 dev->boardsize = be32_to_cpu(cd->cd_BoardSize);
184 } else
185 pr_warn("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 pr_info("Amiga hardware found: ");
212 if (amiga_model >= AMI_500 && amiga_model <= AMI_DRACO) {
213 pr_cont("[%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 pr_cont(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 pr_cont("ZORRO%s ", AMIGAHW_PRESENT(ZORRO3) ? "3" : "");
357 pr_cont("\n");
358
359#undef AMIGAHW_ANNOUNCE
360}
361
362
363static unsigned long amiga_random_get_entropy(void)
364{
365 /* VPOSR/VHPOSR provide at least 17 bits of data changing at 1.79 MHz */
366 return *(unsigned long *)&amiga_custom.vposr;
367}
368
369
370 /*
371 * Setup the Amiga configuration info
372 */
373
374void __init config_amiga(void)
375{
376 int i;
377
378 amiga_identify();
379
380 /* Yuk, we don't have PCI memory */
381 iomem_resource.name = "Memory";
382 for (i = 0; i < 4; i++)
383 request_resource(&iomem_resource, &((struct resource *)&mb_resources)[i]);
384
385 mach_sched_init = amiga_sched_init;
386 mach_init_IRQ = amiga_init_IRQ;
387 mach_get_model = amiga_get_model;
388 mach_get_hardware_list = amiga_get_hardware_list;
389 arch_gettimeoffset = amiga_gettimeoffset;
390
391 /*
392 * default MAX_DMA=0xffffffff on all machines. If we don't do so, the SCSI
393 * code will not be able to allocate any mem for transfers, unless we are
394 * dealing with a Z2 mem only system. /Jes
395 */
396 mach_max_dma_address = 0xffffffff;
397
398 mach_reset = amiga_reset;
399#if IS_ENABLED(CONFIG_INPUT_M68K_BEEP)
400 mach_beep = amiga_mksound;
401#endif
402
403#ifdef CONFIG_HEARTBEAT
404 mach_heartbeat = amiga_heartbeat;
405#endif
406
407 mach_random_get_entropy = amiga_random_get_entropy;
408
409 /* Fill in the clock value (based on the 700 kHz E-Clock) */
410 amiga_colorclock = 5*amiga_eclock; /* 3.5 MHz */
411
412 /* clear all DMA bits */
413 amiga_custom.dmacon = DMAF_ALL;
414 /* ensure that the DMA master bit is set */
415 amiga_custom.dmacon = DMAF_SETCLR | DMAF_MASTER;
416
417 /* don't use Z2 RAM as system memory on Z3 capable machines */
418 if (AMIGAHW_PRESENT(ZORRO3)) {
419 int i, j;
420 u32 disabled_z2mem = 0;
421
422 for (i = 0; i < m68k_num_memory; i++) {
423 if (m68k_memory[i].addr < 16*1024*1024) {
424 if (i == 0) {
425 /* don't cut off the branch we're sitting on */
426 pr_warn("Warning: kernel runs in Zorro II memory\n");
427 continue;
428 }
429 disabled_z2mem += m68k_memory[i].size;
430 m68k_num_memory--;
431 for (j = i; j < m68k_num_memory; j++)
432 m68k_memory[j] = m68k_memory[j+1];
433 i--;
434 }
435 }
436 if (disabled_z2mem)
437 pr_info("%dK of Zorro II memory will not be used as system memory\n",
438 disabled_z2mem>>10);
439 }
440
441 /* request all RAM */
442 for (i = 0; i < m68k_num_memory; i++) {
443 ram_resource[i].name =
444 (m68k_memory[i].addr >= 0x01000000) ? "32-bit Fast RAM" :
445 (m68k_memory[i].addr < 0x00c00000) ? "16-bit Fast RAM" :
446 "16-bit Slow RAM";
447 ram_resource[i].start = m68k_memory[i].addr;
448 ram_resource[i].end = m68k_memory[i].addr+m68k_memory[i].size-1;
449 request_resource(&iomem_resource, &ram_resource[i]);
450 }
451
452 /* initialize chipram allocator */
453 amiga_chip_init();
454
455 /* our beloved beeper */
456 if (AMIGAHW_PRESENT(AMI_AUDIO))
457 amiga_init_sound();
458
459 /*
460 * if it is an A3000, set the magic bit that forces
461 * a hard rekick
462 */
463 if (AMIGAHW_PRESENT(MAGIC_REKICK))
464 *(unsigned char *)ZTWO_VADDR(0xde0002) |= 0x80;
465}
466
467static unsigned short jiffy_ticks;
468
469static void __init amiga_sched_init(irq_handler_t timer_routine)
470{
471 static struct resource sched_res = {
472 .name = "timer", .start = 0x00bfd400, .end = 0x00bfd5ff,
473 };
474 jiffy_ticks = DIV_ROUND_CLOSEST(amiga_eclock, HZ);
475
476 if (request_resource(&mb_resources._ciab, &sched_res))
477 pr_warn("Cannot allocate ciab.ta{lo,hi}\n");
478 ciab.cra &= 0xC0; /* turn off timer A, continuous mode, from Eclk */
479 ciab.talo = jiffy_ticks % 256;
480 ciab.tahi = jiffy_ticks / 256;
481
482 /* install interrupt service routine for CIAB Timer A
483 *
484 * Please don't change this to use ciaa, as it interferes with the
485 * SCSI code. We'll have to take a look at this later
486 */
487 if (request_irq(IRQ_AMIGA_CIAB_TA, timer_routine, 0, "timer", NULL))
488 pr_err("Couldn't register timer interrupt\n");
489 /* start timer */
490 ciab.cra |= 0x11;
491}
492
493#define TICK_SIZE 10000
494
495/* This is always executed with interrupts disabled. */
496static u32 amiga_gettimeoffset(void)
497{
498 unsigned short hi, lo, hi2;
499 u32 ticks, offset = 0;
500
501 /* read CIA B timer A current value */
502 hi = ciab.tahi;
503 lo = ciab.talo;
504 hi2 = ciab.tahi;
505
506 if (hi != hi2) {
507 lo = ciab.talo;
508 hi = hi2;
509 }
510
511 ticks = hi << 8 | lo;
512
513 if (ticks > jiffy_ticks / 2)
514 /* check for pending interrupt */
515 if (cia_set_irq(&ciab_base, 0) & CIA_ICR_TA)
516 offset = 10000;
517
518 ticks = jiffy_ticks - ticks;
519 ticks = (10000 * ticks) / jiffy_ticks;
520
521 return (ticks + offset) * 1000;
522}
523
524static void amiga_reset(void) __noreturn;
525
526static void amiga_reset(void)
527{
528 unsigned long jmp_addr040 = virt_to_phys(&&jmp_addr_label040);
529 unsigned long jmp_addr = virt_to_phys(&&jmp_addr_label);
530
531 local_irq_disable();
532 if (CPU_IS_040_OR_060)
533 /* Setup transparent translation registers for mapping
534 * of 16 MB kernel segment before disabling translation
535 */
536 asm volatile ("\n"
537 " move.l %0,%%d0\n"
538 " and.l #0xff000000,%%d0\n"
539 " or.w #0xe020,%%d0\n" /* map 16 MB, enable, cacheable */
540 " .chip 68040\n"
541 " movec %%d0,%%itt0\n"
542 " movec %%d0,%%dtt0\n"
543 " .chip 68k\n"
544 " jmp %0@\n"
545 : /* no outputs */
546 : "a" (jmp_addr040)
547 : "d0");
548 else
549 /* for 680[23]0, just disable translation and jump to the physical
550 * address of the label
551 */
552 asm volatile ("\n"
553 " pmove %%tc,%@\n"
554 " bclr #7,%@\n"
555 " pmove %@,%%tc\n"
556 " jmp %0@\n"
557 : /* no outputs */
558 : "a" (jmp_addr));
559jmp_addr_label040:
560 /* disable translation on '040 now */
561 asm volatile ("\n"
562 " moveq #0,%%d0\n"
563 " .chip 68040\n"
564 " movec %%d0,%%tc\n" /* disable MMU */
565 " .chip 68k\n"
566 : /* no outputs */
567 : /* no inputs */
568 : "d0");
569
570 jmp_addr_label:
571 /* pickup reset address from AmigaOS ROM, reset devices and jump
572 * to reset address
573 */
574 asm volatile ("\n"
575 " move.w #0x2700,%sr\n"
576 " lea 0x01000000,%a0\n"
577 " sub.l %a0@(-0x14),%a0\n"
578 " move.l %a0@(4),%a0\n"
579 " subq.l #2,%a0\n"
580 " jra 1f\n"
581 /* align on a longword boundary */
582 " " __ALIGN_STR "\n"
583 "1:\n"
584 " reset\n"
585 " jmp %a0@");
586
587 for (;;)
588 ;
589}
590
591
592 /*
593 * Debugging
594 */
595
596#define SAVEKMSG_MAXMEM 128*1024
597
598#define SAVEKMSG_MAGIC1 0x53415645 /* 'SAVE' */
599#define SAVEKMSG_MAGIC2 0x4B4D5347 /* 'KMSG' */
600
601struct savekmsg {
602 unsigned long magic1; /* SAVEKMSG_MAGIC1 */
603 unsigned long magic2; /* SAVEKMSG_MAGIC2 */
604 unsigned long magicptr; /* address of magic1 */
605 unsigned long size;
606 char data[0];
607};
608
609static struct savekmsg *savekmsg;
610
611static void amiga_mem_console_write(struct console *co, const char *s,
612 unsigned int count)
613{
614 if (savekmsg->size + count <= SAVEKMSG_MAXMEM-sizeof(struct savekmsg)) {
615 memcpy(savekmsg->data + savekmsg->size, s, count);
616 savekmsg->size += count;
617 }
618}
619
620static int __init amiga_savekmsg_setup(char *arg)
621{
622 bool registered;
623
624 if (!MACH_IS_AMIGA || strcmp(arg, "mem"))
625 return 0;
626
627 if (amiga_chip_size < SAVEKMSG_MAXMEM) {
628 pr_err("Not enough chipram for debugging\n");
629 return -ENOMEM;
630 }
631
632 /* Just steal the block, the chipram allocator isn't functional yet */
633 amiga_chip_size -= SAVEKMSG_MAXMEM;
634 savekmsg = ZTWO_VADDR(CHIP_PHYSADDR + amiga_chip_size);
635 savekmsg->magic1 = SAVEKMSG_MAGIC1;
636 savekmsg->magic2 = SAVEKMSG_MAGIC2;
637 savekmsg->magicptr = ZTWO_PADDR(savekmsg);
638 savekmsg->size = 0;
639
640 registered = !!amiga_console_driver.write;
641 amiga_console_driver.write = amiga_mem_console_write;
642 if (!registered)
643 register_console(&amiga_console_driver);
644 return 0;
645}
646
647early_param("debug", amiga_savekmsg_setup);
648
649static void amiga_serial_putc(char c)
650{
651 amiga_custom.serdat = (unsigned char)c | 0x100;
652 while (!(amiga_custom.serdatr & 0x2000))
653 ;
654}
655
656static void amiga_serial_console_write(struct console *co, const char *s,
657 unsigned int count)
658{
659 while (count--) {
660 if (*s == '\n')
661 amiga_serial_putc('\r');
662 amiga_serial_putc(*s++);
663 }
664}
665
666#if 0
667void amiga_serial_puts(const char *s)
668{
669 amiga_serial_console_write(NULL, s, strlen(s));
670}
671
672int amiga_serial_console_wait_key(struct console *co)
673{
674 int ch;
675
676 while (!(amiga_custom.intreqr & IF_RBF))
677 barrier();
678 ch = amiga_custom.serdatr & 0xff;
679 /* clear the interrupt, so that another character can be read */
680 amiga_custom.intreq = IF_RBF;
681 return ch;
682}
683
684void amiga_serial_gets(struct console *co, char *s, int len)
685{
686 int ch, cnt = 0;
687
688 while (1) {
689 ch = amiga_serial_console_wait_key(co);
690
691 /* Check for backspace. */
692 if (ch == 8 || ch == 127) {
693 if (cnt == 0) {
694 amiga_serial_putc('\007');
695 continue;
696 }
697 cnt--;
698 amiga_serial_puts("\010 \010");
699 continue;
700 }
701
702 /* Check for enter. */
703 if (ch == 10 || ch == 13)
704 break;
705
706 /* See if line is too long. */
707 if (cnt >= len + 1) {
708 amiga_serial_putc(7);
709 cnt--;
710 continue;
711 }
712
713 /* Store and echo character. */
714 s[cnt++] = ch;
715 amiga_serial_putc(ch);
716 }
717 /* Print enter. */
718 amiga_serial_puts("\r\n");
719 s[cnt] = 0;
720}
721#endif
722
723static int __init amiga_debug_setup(char *arg)
724{
725 bool registered;
726
727 if (!MACH_IS_AMIGA || strcmp(arg, "ser"))
728 return 0;
729
730 /* no initialization required (?) */
731 registered = !!amiga_console_driver.write;
732 amiga_console_driver.write = amiga_serial_console_write;
733 if (!registered)
734 register_console(&amiga_console_driver);
735 return 0;
736}
737
738early_param("debug", amiga_debug_setup);
739
740#ifdef CONFIG_HEARTBEAT
741static void amiga_heartbeat(int on)
742{
743 if (on)
744 ciaa.pra &= ~2;
745 else
746 ciaa.pra |= 2;
747}
748#endif
749
750 /*
751 * Amiga specific parts of /proc
752 */
753
754static void amiga_get_model(char *model)
755{
756 strcpy(model, amiga_model_name);
757}
758
759
760static void amiga_get_hardware_list(struct seq_file *m)
761{
762 if (AMIGAHW_PRESENT(CHIP_RAM))
763 seq_printf(m, "Chip RAM:\t%ldK\n", amiga_chip_size>>10);
764 seq_printf(m, "PS Freq:\t%dHz\nEClock Freq:\t%ldHz\n",
765 amiga_psfreq, amiga_eclock);
766 if (AMIGAHW_PRESENT(AMI_VIDEO)) {
767 char *type;
768 switch (amiga_chipset) {
769 case CS_OCS:
770 type = "OCS";
771 break;
772 case CS_ECS:
773 type = "ECS";
774 break;
775 case CS_AGA:
776 type = "AGA";
777 break;
778 default:
779 type = "Old or Unknown";
780 break;
781 }
782 seq_printf(m, "Graphics:\t%s\n", type);
783 }
784
785#define AMIGAHW_ANNOUNCE(name, str) \
786 if (AMIGAHW_PRESENT(name)) \
787 seq_printf (m, "\t%s\n", str)
788
789 seq_puts(m, "Detected hardware:\n");
790 AMIGAHW_ANNOUNCE(AMI_VIDEO, "Amiga Video");
791 AMIGAHW_ANNOUNCE(AMI_BLITTER, "Blitter");
792 AMIGAHW_ANNOUNCE(AMBER_FF, "Amber Flicker Fixer");
793 AMIGAHW_ANNOUNCE(AMI_AUDIO, "Amiga Audio");
794 AMIGAHW_ANNOUNCE(AMI_FLOPPY, "Floppy Controller");
795 AMIGAHW_ANNOUNCE(A3000_SCSI, "SCSI Controller WD33C93 (A3000 style)");
796 AMIGAHW_ANNOUNCE(A4000_SCSI, "SCSI Controller NCR53C710 (A4000T style)");
797 AMIGAHW_ANNOUNCE(A1200_IDE, "IDE Interface (A1200 style)");
798 AMIGAHW_ANNOUNCE(A4000_IDE, "IDE Interface (A4000 style)");
799 AMIGAHW_ANNOUNCE(CD_ROM, "Internal CD ROM drive");
800 AMIGAHW_ANNOUNCE(AMI_KEYBOARD, "Keyboard");
801 AMIGAHW_ANNOUNCE(AMI_MOUSE, "Mouse Port");
802 AMIGAHW_ANNOUNCE(AMI_SERIAL, "Serial Port");
803 AMIGAHW_ANNOUNCE(AMI_PARALLEL, "Parallel Port");
804 AMIGAHW_ANNOUNCE(A2000_CLK, "Hardware Clock (A2000 style)");
805 AMIGAHW_ANNOUNCE(A3000_CLK, "Hardware Clock (A3000 style)");
806 AMIGAHW_ANNOUNCE(CHIP_RAM, "Chip RAM");
807 AMIGAHW_ANNOUNCE(PAULA, "Paula 8364");
808 AMIGAHW_ANNOUNCE(DENISE, "Denise 8362");
809 AMIGAHW_ANNOUNCE(DENISE_HR, "Denise 8373");
810 AMIGAHW_ANNOUNCE(LISA, "Lisa 8375");
811 AMIGAHW_ANNOUNCE(AGNUS_PAL, "Normal/Fat PAL Agnus 8367/8371");
812 AMIGAHW_ANNOUNCE(AGNUS_NTSC, "Normal/Fat NTSC Agnus 8361/8370");
813 AMIGAHW_ANNOUNCE(AGNUS_HR_PAL, "Fat Hires PAL Agnus 8372");
814 AMIGAHW_ANNOUNCE(AGNUS_HR_NTSC, "Fat Hires NTSC Agnus 8372");
815 AMIGAHW_ANNOUNCE(ALICE_PAL, "PAL Alice 8374");
816 AMIGAHW_ANNOUNCE(ALICE_NTSC, "NTSC Alice 8374");
817 AMIGAHW_ANNOUNCE(MAGIC_REKICK, "Magic Hard Rekick");
818 AMIGAHW_ANNOUNCE(PCMCIA, "PCMCIA Slot");
819#ifdef CONFIG_ZORRO
820 if (AMIGAHW_PRESENT(ZORRO))
821 seq_printf(m, "\tZorro II%s AutoConfig: %d Expansion "
822 "Device%s\n",
823 AMIGAHW_PRESENT(ZORRO3) ? "I" : "",
824 zorro_num_autocon, zorro_num_autocon == 1 ? "" : "s");
825#endif /* CONFIG_ZORRO */
826
827#undef AMIGAHW_ANNOUNCE
828}
829
830/*
831 * The Amiga keyboard driver needs key_maps, but we cannot export it in
832 * drivers/char/defkeymap.c, as it is autogenerated
833 */
834#ifdef CONFIG_HW_CONSOLE
835EXPORT_SYMBOL_GPL(key_maps);
836#endif