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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/rtc.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);
99/* amiga specific timer functions */
100static u32 amiga_gettimeoffset(void);
101extern void amiga_mksound(unsigned int count, unsigned int ticks);
102static void amiga_reset(void);
103extern void amiga_init_sound(void);
104static void amiga_mem_console_write(struct console *co, const char *b,
105 unsigned int count);
106#ifdef CONFIG_HEARTBEAT
107static void amiga_heartbeat(int on);
108#endif
109
110static struct console amiga_console_driver = {
111 .name = "debug",
112 .flags = CON_PRINTBUFFER,
113 .index = -1,
114};
115
116
117 /*
118 * Motherboard Resources present in all Amiga models
119 */
120
121static struct {
122 struct resource _ciab, _ciaa, _custom, _kickstart;
123} mb_resources = {
124 ._ciab = {
125 .name = "CIA B", .start = 0x00bfd000, .end = 0x00bfdfff
126 },
127 ._ciaa = {
128 .name = "CIA A", .start = 0x00bfe000, .end = 0x00bfefff
129 },
130 ._custom = {
131 .name = "Custom I/O", .start = 0x00dff000, .end = 0x00dfffff
132 },
133 ._kickstart = {
134 .name = "Kickstart ROM", .start = 0x00f80000, .end = 0x00ffffff
135 }
136};
137
138static struct resource ram_resource[NUM_MEMINFO];
139
140
141 /*
142 * Parse an Amiga-specific record in the bootinfo
143 */
144
145int __init amiga_parse_bootinfo(const struct bi_record *record)
146{
147 int unknown = 0;
148 const void *data = record->data;
149
150 switch (be16_to_cpu(record->tag)) {
151 case BI_AMIGA_MODEL:
152 amiga_model = be32_to_cpup(data);
153 break;
154
155 case BI_AMIGA_ECLOCK:
156 amiga_eclock = be32_to_cpup(data);
157 break;
158
159 case BI_AMIGA_CHIPSET:
160 amiga_chipset = be32_to_cpup(data);
161 break;
162
163 case BI_AMIGA_CHIP_SIZE:
164 amiga_chip_size = be32_to_cpup(data);
165 break;
166
167 case BI_AMIGA_VBLANK:
168 amiga_vblank = *(const __u8 *)data;
169 break;
170
171 case BI_AMIGA_PSFREQ:
172 amiga_psfreq = *(const __u8 *)data;
173 break;
174
175 case BI_AMIGA_AUTOCON:
176#ifdef CONFIG_ZORRO
177 if (zorro_num_autocon < ZORRO_NUM_AUTO) {
178 const struct ConfigDev *cd = data;
179 struct zorro_dev_init *dev = &zorro_autocon_init[zorro_num_autocon++];
180 dev->rom = cd->cd_Rom;
181 dev->slotaddr = be16_to_cpu(cd->cd_SlotAddr);
182 dev->slotsize = be16_to_cpu(cd->cd_SlotSize);
183 dev->boardaddr = be32_to_cpu(cd->cd_BoardAddr);
184 dev->boardsize = be32_to_cpu(cd->cd_BoardSize);
185 } else
186 pr_warn("amiga_parse_bootinfo: too many AutoConfig devices\n");
187#endif /* CONFIG_ZORRO */
188 break;
189
190 case BI_AMIGA_SERPER:
191 /* serial port period: ignored here */
192 break;
193
194 default:
195 unknown = 1;
196 }
197 return unknown;
198}
199
200 /*
201 * Identify builtin hardware
202 */
203
204static void __init amiga_identify(void)
205{
206 /* Fill in some default values, if necessary */
207 if (amiga_eclock == 0)
208 amiga_eclock = 709379;
209
210 memset(&amiga_hw_present, 0, sizeof(amiga_hw_present));
211
212 pr_info("Amiga hardware found: ");
213 if (amiga_model >= AMI_500 && amiga_model <= AMI_DRACO) {
214 pr_cont("[%s] ", amiga_models[amiga_model-AMI_500]);
215 strcat(amiga_model_name, amiga_models[amiga_model-AMI_500]);
216 }
217
218 switch (amiga_model) {
219 case AMI_UNKNOWN:
220 goto Generic;
221
222 case AMI_600:
223 case AMI_1200:
224 AMIGAHW_SET(A1200_IDE);
225 AMIGAHW_SET(PCMCIA);
226 case AMI_500:
227 case AMI_500PLUS:
228 case AMI_1000:
229 case AMI_2000:
230 case AMI_2500:
231 AMIGAHW_SET(A2000_CLK); /* Is this correct for all models? */
232 goto Generic;
233
234 case AMI_3000:
235 case AMI_3000T:
236 AMIGAHW_SET(AMBER_FF);
237 AMIGAHW_SET(MAGIC_REKICK);
238 /* fall through */
239 case AMI_3000PLUS:
240 AMIGAHW_SET(A3000_SCSI);
241 AMIGAHW_SET(A3000_CLK);
242 AMIGAHW_SET(ZORRO3);
243 goto Generic;
244
245 case AMI_4000T:
246 AMIGAHW_SET(A4000_SCSI);
247 /* fall through */
248 case AMI_4000:
249 AMIGAHW_SET(A4000_IDE);
250 AMIGAHW_SET(A3000_CLK);
251 AMIGAHW_SET(ZORRO3);
252 goto Generic;
253
254 case AMI_CDTV:
255 case AMI_CD32:
256 AMIGAHW_SET(CD_ROM);
257 AMIGAHW_SET(A2000_CLK); /* Is this correct? */
258 goto Generic;
259
260 Generic:
261 AMIGAHW_SET(AMI_VIDEO);
262 AMIGAHW_SET(AMI_BLITTER);
263 AMIGAHW_SET(AMI_AUDIO);
264 AMIGAHW_SET(AMI_FLOPPY);
265 AMIGAHW_SET(AMI_KEYBOARD);
266 AMIGAHW_SET(AMI_MOUSE);
267 AMIGAHW_SET(AMI_SERIAL);
268 AMIGAHW_SET(AMI_PARALLEL);
269 AMIGAHW_SET(CHIP_RAM);
270 AMIGAHW_SET(PAULA);
271
272 switch (amiga_chipset) {
273 case CS_OCS:
274 case CS_ECS:
275 case CS_AGA:
276 switch (amiga_custom.deniseid & 0xf) {
277 case 0x0c:
278 AMIGAHW_SET(DENISE_HR);
279 break;
280 case 0x08:
281 AMIGAHW_SET(LISA);
282 break;
283 }
284 break;
285 default:
286 AMIGAHW_SET(DENISE);
287 break;
288 }
289 switch ((amiga_custom.vposr>>8) & 0x7f) {
290 case 0x00:
291 AMIGAHW_SET(AGNUS_PAL);
292 break;
293 case 0x10:
294 AMIGAHW_SET(AGNUS_NTSC);
295 break;
296 case 0x20:
297 case 0x21:
298 AMIGAHW_SET(AGNUS_HR_PAL);
299 break;
300 case 0x30:
301 case 0x31:
302 AMIGAHW_SET(AGNUS_HR_NTSC);
303 break;
304 case 0x22:
305 case 0x23:
306 AMIGAHW_SET(ALICE_PAL);
307 break;
308 case 0x32:
309 case 0x33:
310 AMIGAHW_SET(ALICE_NTSC);
311 break;
312 }
313 AMIGAHW_SET(ZORRO);
314 break;
315
316 case AMI_DRACO:
317 panic("No support for Draco yet");
318
319 default:
320 panic("Unknown Amiga Model");
321 }
322
323#define AMIGAHW_ANNOUNCE(name, str) \
324 if (AMIGAHW_PRESENT(name)) \
325 pr_cont(str)
326
327 AMIGAHW_ANNOUNCE(AMI_VIDEO, "VIDEO ");
328 AMIGAHW_ANNOUNCE(AMI_BLITTER, "BLITTER ");
329 AMIGAHW_ANNOUNCE(AMBER_FF, "AMBER_FF ");
330 AMIGAHW_ANNOUNCE(AMI_AUDIO, "AUDIO ");
331 AMIGAHW_ANNOUNCE(AMI_FLOPPY, "FLOPPY ");
332 AMIGAHW_ANNOUNCE(A3000_SCSI, "A3000_SCSI ");
333 AMIGAHW_ANNOUNCE(A4000_SCSI, "A4000_SCSI ");
334 AMIGAHW_ANNOUNCE(A1200_IDE, "A1200_IDE ");
335 AMIGAHW_ANNOUNCE(A4000_IDE, "A4000_IDE ");
336 AMIGAHW_ANNOUNCE(CD_ROM, "CD_ROM ");
337 AMIGAHW_ANNOUNCE(AMI_KEYBOARD, "KEYBOARD ");
338 AMIGAHW_ANNOUNCE(AMI_MOUSE, "MOUSE ");
339 AMIGAHW_ANNOUNCE(AMI_SERIAL, "SERIAL ");
340 AMIGAHW_ANNOUNCE(AMI_PARALLEL, "PARALLEL ");
341 AMIGAHW_ANNOUNCE(A2000_CLK, "A2000_CLK ");
342 AMIGAHW_ANNOUNCE(A3000_CLK, "A3000_CLK ");
343 AMIGAHW_ANNOUNCE(CHIP_RAM, "CHIP_RAM ");
344 AMIGAHW_ANNOUNCE(PAULA, "PAULA ");
345 AMIGAHW_ANNOUNCE(DENISE, "DENISE ");
346 AMIGAHW_ANNOUNCE(DENISE_HR, "DENISE_HR ");
347 AMIGAHW_ANNOUNCE(LISA, "LISA ");
348 AMIGAHW_ANNOUNCE(AGNUS_PAL, "AGNUS_PAL ");
349 AMIGAHW_ANNOUNCE(AGNUS_NTSC, "AGNUS_NTSC ");
350 AMIGAHW_ANNOUNCE(AGNUS_HR_PAL, "AGNUS_HR_PAL ");
351 AMIGAHW_ANNOUNCE(AGNUS_HR_NTSC, "AGNUS_HR_NTSC ");
352 AMIGAHW_ANNOUNCE(ALICE_PAL, "ALICE_PAL ");
353 AMIGAHW_ANNOUNCE(ALICE_NTSC, "ALICE_NTSC ");
354 AMIGAHW_ANNOUNCE(MAGIC_REKICK, "MAGIC_REKICK ");
355 AMIGAHW_ANNOUNCE(PCMCIA, "PCMCIA ");
356 if (AMIGAHW_PRESENT(ZORRO))
357 pr_cont("ZORRO%s ", AMIGAHW_PRESENT(ZORRO3) ? "3" : "");
358 pr_cont("\n");
359
360#undef AMIGAHW_ANNOUNCE
361}
362
363
364static unsigned long amiga_random_get_entropy(void)
365{
366 /* VPOSR/VHPOSR provide at least 17 bits of data changing at 1.79 MHz */
367 return *(unsigned long *)&amiga_custom.vposr;
368}
369
370
371 /*
372 * Setup the Amiga configuration info
373 */
374
375void __init config_amiga(void)
376{
377 int i;
378
379 amiga_identify();
380
381 /* Yuk, we don't have PCI memory */
382 iomem_resource.name = "Memory";
383 for (i = 0; i < 4; i++)
384 request_resource(&iomem_resource, &((struct resource *)&mb_resources)[i]);
385
386 mach_sched_init = amiga_sched_init;
387 mach_init_IRQ = amiga_init_IRQ;
388 mach_get_model = amiga_get_model;
389 mach_get_hardware_list = amiga_get_hardware_list;
390 arch_gettimeoffset = amiga_gettimeoffset;
391
392 /*
393 * default MAX_DMA=0xffffffff on all machines. If we don't do so, the SCSI
394 * code will not be able to allocate any mem for transfers, unless we are
395 * dealing with a Z2 mem only system. /Jes
396 */
397 mach_max_dma_address = 0xffffffff;
398
399 mach_reset = amiga_reset;
400#if defined(CONFIG_INPUT_M68K_BEEP) || defined(CONFIG_INPUT_M68K_BEEP_MODULE)
401 mach_beep = amiga_mksound;
402#endif
403
404#ifdef CONFIG_HEARTBEAT
405 mach_heartbeat = amiga_heartbeat;
406#endif
407
408 mach_random_get_entropy = amiga_random_get_entropy;
409
410 /* Fill in the clock value (based on the 700 kHz E-Clock) */
411 amiga_colorclock = 5*amiga_eclock; /* 3.5 MHz */
412
413 /* clear all DMA bits */
414 amiga_custom.dmacon = DMAF_ALL;
415 /* ensure that the DMA master bit is set */
416 amiga_custom.dmacon = DMAF_SETCLR | DMAF_MASTER;
417
418 /* don't use Z2 RAM as system memory on Z3 capable machines */
419 if (AMIGAHW_PRESENT(ZORRO3)) {
420 int i, j;
421 u32 disabled_z2mem = 0;
422
423 for (i = 0; i < m68k_num_memory; i++) {
424 if (m68k_memory[i].addr < 16*1024*1024) {
425 if (i == 0) {
426 /* don't cut off the branch we're sitting on */
427 pr_warn("Warning: kernel runs in Zorro II memory\n");
428 continue;
429 }
430 disabled_z2mem += m68k_memory[i].size;
431 m68k_num_memory--;
432 for (j = i; j < m68k_num_memory; j++)
433 m68k_memory[j] = m68k_memory[j+1];
434 i--;
435 }
436 }
437 if (disabled_z2mem)
438 pr_info("%dK of Zorro II memory will not be used as system memory\n",
439 disabled_z2mem>>10);
440 }
441
442 /* request all RAM */
443 for (i = 0; i < m68k_num_memory; i++) {
444 ram_resource[i].name =
445 (m68k_memory[i].addr >= 0x01000000) ? "32-bit Fast RAM" :
446 (m68k_memory[i].addr < 0x00c00000) ? "16-bit Fast RAM" :
447 "16-bit Slow RAM";
448 ram_resource[i].start = m68k_memory[i].addr;
449 ram_resource[i].end = m68k_memory[i].addr+m68k_memory[i].size-1;
450 request_resource(&iomem_resource, &ram_resource[i]);
451 }
452
453 /* initialize chipram allocator */
454 amiga_chip_init();
455
456 /* our beloved beeper */
457 if (AMIGAHW_PRESENT(AMI_AUDIO))
458 amiga_init_sound();
459
460 /*
461 * if it is an A3000, set the magic bit that forces
462 * a hard rekick
463 */
464 if (AMIGAHW_PRESENT(MAGIC_REKICK))
465 *(unsigned char *)ZTWO_VADDR(0xde0002) |= 0x80;
466}
467
468static unsigned short jiffy_ticks;
469
470static void __init amiga_sched_init(irq_handler_t timer_routine)
471{
472 static struct resource sched_res = {
473 .name = "timer", .start = 0x00bfd400, .end = 0x00bfd5ff,
474 };
475 jiffy_ticks = DIV_ROUND_CLOSEST(amiga_eclock, HZ);
476
477 if (request_resource(&mb_resources._ciab, &sched_res))
478 pr_warn("Cannot allocate ciab.ta{lo,hi}\n");
479 ciab.cra &= 0xC0; /* turn off timer A, continuous mode, from Eclk */
480 ciab.talo = jiffy_ticks % 256;
481 ciab.tahi = jiffy_ticks / 256;
482
483 /* install interrupt service routine for CIAB Timer A
484 *
485 * Please don't change this to use ciaa, as it interferes with the
486 * SCSI code. We'll have to take a look at this later
487 */
488 if (request_irq(IRQ_AMIGA_CIAB_TA, timer_routine, 0, "timer", NULL))
489 pr_err("Couldn't register timer interrupt\n");
490 /* start timer */
491 ciab.cra |= 0x11;
492}
493
494#define TICK_SIZE 10000
495
496/* This is always executed with interrupts disabled. */
497static u32 amiga_gettimeoffset(void)
498{
499 unsigned short hi, lo, hi2;
500 u32 ticks, offset = 0;
501
502 /* read CIA B timer A current value */
503 hi = ciab.tahi;
504 lo = ciab.talo;
505 hi2 = ciab.tahi;
506
507 if (hi != hi2) {
508 lo = ciab.talo;
509 hi = hi2;
510 }
511
512 ticks = hi << 8 | lo;
513
514 if (ticks > jiffy_ticks / 2)
515 /* check for pending interrupt */
516 if (cia_set_irq(&ciab_base, 0) & CIA_ICR_TA)
517 offset = 10000;
518
519 ticks = jiffy_ticks - ticks;
520 ticks = (10000 * ticks) / jiffy_ticks;
521
522 return (ticks + offset) * 1000;
523}
524
525static void amiga_reset(void) __noreturn;
526
527static void amiga_reset(void)
528{
529 unsigned long jmp_addr040 = virt_to_phys(&&jmp_addr_label040);
530 unsigned long jmp_addr = virt_to_phys(&&jmp_addr_label);
531
532 local_irq_disable();
533 if (CPU_IS_040_OR_060)
534 /* Setup transparent translation registers for mapping
535 * of 16 MB kernel segment before disabling translation
536 */
537 asm volatile ("\n"
538 " move.l %0,%%d0\n"
539 " and.l #0xff000000,%%d0\n"
540 " or.w #0xe020,%%d0\n" /* map 16 MB, enable, cacheable */
541 " .chip 68040\n"
542 " movec %%d0,%%itt0\n"
543 " movec %%d0,%%dtt0\n"
544 " .chip 68k\n"
545 " jmp %0@\n"
546 : /* no outputs */
547 : "a" (jmp_addr040)
548 : "d0");
549 else
550 /* for 680[23]0, just disable translation and jump to the physical
551 * address of the label
552 */
553 asm volatile ("\n"
554 " pmove %%tc,%@\n"
555 " bclr #7,%@\n"
556 " pmove %@,%%tc\n"
557 " jmp %0@\n"
558 : /* no outputs */
559 : "a" (jmp_addr));
560jmp_addr_label040:
561 /* disable translation on '040 now */
562 asm volatile ("\n"
563 " moveq #0,%%d0\n"
564 " .chip 68040\n"
565 " movec %%d0,%%tc\n" /* disable MMU */
566 " .chip 68k\n"
567 : /* no outputs */
568 : /* no inputs */
569 : "d0");
570
571 jmp_addr_label:
572 /* pickup reset address from AmigaOS ROM, reset devices and jump
573 * to reset address
574 */
575 asm volatile ("\n"
576 " move.w #0x2700,%sr\n"
577 " lea 0x01000000,%a0\n"
578 " sub.l %a0@(-0x14),%a0\n"
579 " move.l %a0@(4),%a0\n"
580 " subq.l #2,%a0\n"
581 " jra 1f\n"
582 /* align on a longword boundary */
583 " " __ALIGN_STR "\n"
584 "1:\n"
585 " reset\n"
586 " jmp %a0@");
587
588 for (;;)
589 ;
590}
591
592
593 /*
594 * Debugging
595 */
596
597#define SAVEKMSG_MAXMEM 128*1024
598
599#define SAVEKMSG_MAGIC1 0x53415645 /* 'SAVE' */
600#define SAVEKMSG_MAGIC2 0x4B4D5347 /* 'KMSG' */
601
602struct savekmsg {
603 unsigned long magic1; /* SAVEKMSG_MAGIC1 */
604 unsigned long magic2; /* SAVEKMSG_MAGIC2 */
605 unsigned long magicptr; /* address of magic1 */
606 unsigned long size;
607 char data[0];
608};
609
610static struct savekmsg *savekmsg;
611
612static void amiga_mem_console_write(struct console *co, const char *s,
613 unsigned int count)
614{
615 if (savekmsg->size + count <= SAVEKMSG_MAXMEM-sizeof(struct savekmsg)) {
616 memcpy(savekmsg->data + savekmsg->size, s, count);
617 savekmsg->size += count;
618 }
619}
620
621static int __init amiga_savekmsg_setup(char *arg)
622{
623 bool registered;
624
625 if (!MACH_IS_AMIGA || strcmp(arg, "mem"))
626 return 0;
627
628 if (amiga_chip_size < SAVEKMSG_MAXMEM) {
629 pr_err("Not enough chipram for debugging\n");
630 return -ENOMEM;
631 }
632
633 /* Just steal the block, the chipram allocator isn't functional yet */
634 amiga_chip_size -= SAVEKMSG_MAXMEM;
635 savekmsg = ZTWO_VADDR(CHIP_PHYSADDR + amiga_chip_size);
636 savekmsg->magic1 = SAVEKMSG_MAGIC1;
637 savekmsg->magic2 = SAVEKMSG_MAGIC2;
638 savekmsg->magicptr = ZTWO_PADDR(savekmsg);
639 savekmsg->size = 0;
640
641 registered = !!amiga_console_driver.write;
642 amiga_console_driver.write = amiga_mem_console_write;
643 if (!registered)
644 register_console(&amiga_console_driver);
645 return 0;
646}
647
648early_param("debug", amiga_savekmsg_setup);
649
650static void amiga_serial_putc(char c)
651{
652 amiga_custom.serdat = (unsigned char)c | 0x100;
653 while (!(amiga_custom.serdatr & 0x2000))
654 ;
655}
656
657static void amiga_serial_console_write(struct console *co, const char *s,
658 unsigned int count)
659{
660 while (count--) {
661 if (*s == '\n')
662 amiga_serial_putc('\r');
663 amiga_serial_putc(*s++);
664 }
665}
666
667#if 0
668void amiga_serial_puts(const char *s)
669{
670 amiga_serial_console_write(NULL, s, strlen(s));
671}
672
673int amiga_serial_console_wait_key(struct console *co)
674{
675 int ch;
676
677 while (!(amiga_custom.intreqr & IF_RBF))
678 barrier();
679 ch = amiga_custom.serdatr & 0xff;
680 /* clear the interrupt, so that another character can be read */
681 amiga_custom.intreq = IF_RBF;
682 return ch;
683}
684
685void amiga_serial_gets(struct console *co, char *s, int len)
686{
687 int ch, cnt = 0;
688
689 while (1) {
690 ch = amiga_serial_console_wait_key(co);
691
692 /* Check for backspace. */
693 if (ch == 8 || ch == 127) {
694 if (cnt == 0) {
695 amiga_serial_putc('\007');
696 continue;
697 }
698 cnt--;
699 amiga_serial_puts("\010 \010");
700 continue;
701 }
702
703 /* Check for enter. */
704 if (ch == 10 || ch == 13)
705 break;
706
707 /* See if line is too long. */
708 if (cnt >= len + 1) {
709 amiga_serial_putc(7);
710 cnt--;
711 continue;
712 }
713
714 /* Store and echo character. */
715 s[cnt++] = ch;
716 amiga_serial_putc(ch);
717 }
718 /* Print enter. */
719 amiga_serial_puts("\r\n");
720 s[cnt] = 0;
721}
722#endif
723
724static int __init amiga_debug_setup(char *arg)
725{
726 bool registered;
727
728 if (!MACH_IS_AMIGA || strcmp(arg, "ser"))
729 return 0;
730
731 /* no initialization required (?) */
732 registered = !!amiga_console_driver.write;
733 amiga_console_driver.write = amiga_serial_console_write;
734 if (!registered)
735 register_console(&amiga_console_driver);
736 return 0;
737}
738
739early_param("debug", amiga_debug_setup);
740
741#ifdef CONFIG_HEARTBEAT
742static void amiga_heartbeat(int on)
743{
744 if (on)
745 ciaa.pra &= ~2;
746 else
747 ciaa.pra |= 2;
748}
749#endif
750
751 /*
752 * Amiga specific parts of /proc
753 */
754
755static void amiga_get_model(char *model)
756{
757 strcpy(model, amiga_model_name);
758}
759
760
761static void amiga_get_hardware_list(struct seq_file *m)
762{
763 if (AMIGAHW_PRESENT(CHIP_RAM))
764 seq_printf(m, "Chip RAM:\t%ldK\n", amiga_chip_size>>10);
765 seq_printf(m, "PS Freq:\t%dHz\nEClock Freq:\t%ldHz\n",
766 amiga_psfreq, amiga_eclock);
767 if (AMIGAHW_PRESENT(AMI_VIDEO)) {
768 char *type;
769 switch (amiga_chipset) {
770 case CS_OCS:
771 type = "OCS";
772 break;
773 case CS_ECS:
774 type = "ECS";
775 break;
776 case CS_AGA:
777 type = "AGA";
778 break;
779 default:
780 type = "Old or Unknown";
781 break;
782 }
783 seq_printf(m, "Graphics:\t%s\n", type);
784 }
785
786#define AMIGAHW_ANNOUNCE(name, str) \
787 if (AMIGAHW_PRESENT(name)) \
788 seq_printf (m, "\t%s\n", str)
789
790 seq_printf (m, "Detected hardware:\n");
791
792 AMIGAHW_ANNOUNCE(AMI_VIDEO, "Amiga Video");
793 AMIGAHW_ANNOUNCE(AMI_BLITTER, "Blitter");
794 AMIGAHW_ANNOUNCE(AMBER_FF, "Amber Flicker Fixer");
795 AMIGAHW_ANNOUNCE(AMI_AUDIO, "Amiga Audio");
796 AMIGAHW_ANNOUNCE(AMI_FLOPPY, "Floppy Controller");
797 AMIGAHW_ANNOUNCE(A3000_SCSI, "SCSI Controller WD33C93 (A3000 style)");
798 AMIGAHW_ANNOUNCE(A4000_SCSI, "SCSI Controller NCR53C710 (A4000T style)");
799 AMIGAHW_ANNOUNCE(A1200_IDE, "IDE Interface (A1200 style)");
800 AMIGAHW_ANNOUNCE(A4000_IDE, "IDE Interface (A4000 style)");
801 AMIGAHW_ANNOUNCE(CD_ROM, "Internal CD ROM drive");
802 AMIGAHW_ANNOUNCE(AMI_KEYBOARD, "Keyboard");
803 AMIGAHW_ANNOUNCE(AMI_MOUSE, "Mouse Port");
804 AMIGAHW_ANNOUNCE(AMI_SERIAL, "Serial Port");
805 AMIGAHW_ANNOUNCE(AMI_PARALLEL, "Parallel Port");
806 AMIGAHW_ANNOUNCE(A2000_CLK, "Hardware Clock (A2000 style)");
807 AMIGAHW_ANNOUNCE(A3000_CLK, "Hardware Clock (A3000 style)");
808 AMIGAHW_ANNOUNCE(CHIP_RAM, "Chip RAM");
809 AMIGAHW_ANNOUNCE(PAULA, "Paula 8364");
810 AMIGAHW_ANNOUNCE(DENISE, "Denise 8362");
811 AMIGAHW_ANNOUNCE(DENISE_HR, "Denise 8373");
812 AMIGAHW_ANNOUNCE(LISA, "Lisa 8375");
813 AMIGAHW_ANNOUNCE(AGNUS_PAL, "Normal/Fat PAL Agnus 8367/8371");
814 AMIGAHW_ANNOUNCE(AGNUS_NTSC, "Normal/Fat NTSC Agnus 8361/8370");
815 AMIGAHW_ANNOUNCE(AGNUS_HR_PAL, "Fat Hires PAL Agnus 8372");
816 AMIGAHW_ANNOUNCE(AGNUS_HR_NTSC, "Fat Hires NTSC Agnus 8372");
817 AMIGAHW_ANNOUNCE(ALICE_PAL, "PAL Alice 8374");
818 AMIGAHW_ANNOUNCE(ALICE_NTSC, "NTSC Alice 8374");
819 AMIGAHW_ANNOUNCE(MAGIC_REKICK, "Magic Hard Rekick");
820 AMIGAHW_ANNOUNCE(PCMCIA, "PCMCIA Slot");
821#ifdef CONFIG_ZORRO
822 if (AMIGAHW_PRESENT(ZORRO))
823 seq_printf(m, "\tZorro II%s AutoConfig: %d Expansion "
824 "Device%s\n",
825 AMIGAHW_PRESENT(ZORRO3) ? "I" : "",
826 zorro_num_autocon, zorro_num_autocon == 1 ? "" : "s");
827#endif /* CONFIG_ZORRO */
828
829#undef AMIGAHW_ANNOUNCE
830}
831
832/*
833 * The Amiga keyboard driver needs key_maps, but we cannot export it in
834 * drivers/char/defkeymap.c, as it is autogenerated
835 */
836#ifdef CONFIG_HW_CONSOLE
837EXPORT_SYMBOL_GPL(key_maps);
838#endif