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/clocksource.h>
20#include <linux/console.h>
21#include <linux/rtc.h>
22#include <linux/init.h>
23#include <linux/delay.h>
24#include <linux/interrupt.h>
25#include <linux/zorro.h>
26#include <linux/module.h>
27#include <linux/keyboard.h>
28
29#include <asm/bootinfo.h>
30#include <asm/bootinfo-amiga.h>
31#include <asm/byteorder.h>
32#include <asm/setup.h>
33#include <asm/amigahw.h>
34#include <asm/amigaints.h>
35#include <asm/irq.h>
36#include <asm/machdep.h>
37#include <asm/io.h>
38#include <asm/config.h>
39
40#include "amiga.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(void);
97static void amiga_get_model(char *model);
98static void amiga_get_hardware_list(struct seq_file *m);
99static void amiga_reset(void);
100static void amiga_mem_console_write(struct console *co, const char *b,
101 unsigned int count);
102#ifdef CONFIG_HEARTBEAT
103static void amiga_heartbeat(int on);
104#endif
105
106static struct console amiga_console_driver = {
107 .name = "debug",
108 .flags = CON_PRINTBUFFER,
109 .index = -1,
110};
111
112
113 /*
114 * Motherboard Resources present in all Amiga models
115 */
116
117static struct {
118 struct resource _ciab, _ciaa, _custom, _kickstart;
119} mb_resources = {
120 ._ciab = {
121 .name = "CIA B", .start = 0x00bfd000, .end = 0x00bfdfff
122 },
123 ._ciaa = {
124 .name = "CIA A", .start = 0x00bfe000, .end = 0x00bfefff
125 },
126 ._custom = {
127 .name = "Custom I/O", .start = 0x00dff000, .end = 0x00dfffff
128 },
129 ._kickstart = {
130 .name = "Kickstart ROM", .start = 0x00f80000, .end = 0x00ffffff
131 }
132};
133
134static struct resource ram_resource[NUM_MEMINFO];
135
136
137 /*
138 * Parse an Amiga-specific record in the bootinfo
139 */
140
141int __init amiga_parse_bootinfo(const struct bi_record *record)
142{
143 int unknown = 0;
144 const void *data = record->data;
145
146 switch (be16_to_cpu(record->tag)) {
147 case BI_AMIGA_MODEL:
148 amiga_model = be32_to_cpup(p: data);
149 break;
150
151 case BI_AMIGA_ECLOCK:
152 amiga_eclock = be32_to_cpup(p: data);
153 break;
154
155 case BI_AMIGA_CHIPSET:
156 amiga_chipset = be32_to_cpup(p: data);
157 break;
158
159 case BI_AMIGA_CHIP_SIZE:
160 amiga_chip_size = be32_to_cpup(p: data);
161 break;
162
163 case BI_AMIGA_VBLANK:
164 amiga_vblank = *(const __u8 *)data;
165 break;
166
167 case BI_AMIGA_PSFREQ:
168 amiga_psfreq = *(const __u8 *)data;
169 break;
170
171 case BI_AMIGA_AUTOCON:
172#ifdef CONFIG_ZORRO
173 if (zorro_num_autocon < ZORRO_NUM_AUTO) {
174 const struct ConfigDev *cd = data;
175 struct zorro_dev_init *dev = &zorro_autocon_init[zorro_num_autocon++];
176 dev->rom = cd->cd_Rom;
177 dev->slotaddr = be16_to_cpu(cd->cd_SlotAddr);
178 dev->slotsize = be16_to_cpu(cd->cd_SlotSize);
179 dev->boardaddr = be32_to_cpu(cd->cd_BoardAddr);
180 dev->boardsize = be32_to_cpu(cd->cd_BoardSize);
181
182 /* CS-LAB Warp 1260 workaround */
183 if (be16_to_cpu(dev->rom.er_Manufacturer) == ZORRO_MANUF(ZORRO_PROD_CSLAB_WARP_1260) &&
184 dev->rom.er_Product == ZORRO_PROD(ZORRO_PROD_CSLAB_WARP_1260)) {
185
186 /* turn off all interrupts */
187 pr_info("Warp 1260 card detected: applying interrupt storm workaround\n");
188 *(uint32_t *)(dev->boardaddr + 0x1000) = 0xfff;
189 }
190 } else
191 pr_warn("amiga_parse_bootinfo: too many AutoConfig devices\n");
192#endif /* CONFIG_ZORRO */
193 break;
194
195 case BI_AMIGA_SERPER:
196 /* serial port period: ignored here */
197 break;
198
199 default:
200 unknown = 1;
201 }
202 return unknown;
203}
204
205 /*
206 * Identify builtin hardware
207 */
208
209static void __init amiga_identify(void)
210{
211 /* Fill in some default values, if necessary */
212 if (amiga_eclock == 0)
213 amiga_eclock = 709379;
214
215 memset(&amiga_hw_present, 0, sizeof(amiga_hw_present));
216
217 pr_info("Amiga hardware found: ");
218 if (amiga_model >= AMI_500 && amiga_model <= AMI_DRACO) {
219 pr_cont("[%s] ", amiga_models[amiga_model-AMI_500]);
220 strcat(amiga_model_name, amiga_models[amiga_model-AMI_500]);
221 }
222
223 switch (amiga_model) {
224 case AMI_UNKNOWN:
225 break;
226
227 case AMI_600:
228 case AMI_1200:
229 AMIGAHW_SET(A1200_IDE);
230 AMIGAHW_SET(PCMCIA);
231 fallthrough;
232 case AMI_500:
233 case AMI_500PLUS:
234 case AMI_1000:
235 case AMI_2000:
236 case AMI_2500:
237 AMIGAHW_SET(A2000_CLK); /* Is this correct for all models? */
238 break;
239
240 case AMI_3000:
241 case AMI_3000T:
242 AMIGAHW_SET(AMBER_FF);
243 AMIGAHW_SET(MAGIC_REKICK);
244 fallthrough;
245 case AMI_3000PLUS:
246 AMIGAHW_SET(A3000_SCSI);
247 AMIGAHW_SET(A3000_CLK);
248 AMIGAHW_SET(ZORRO3);
249 break;
250
251 case AMI_4000T:
252 AMIGAHW_SET(A4000_SCSI);
253 fallthrough;
254 case AMI_4000:
255 AMIGAHW_SET(A4000_IDE);
256 AMIGAHW_SET(A3000_CLK);
257 AMIGAHW_SET(ZORRO3);
258 break;
259
260 case AMI_CDTV:
261 case AMI_CD32:
262 AMIGAHW_SET(CD_ROM);
263 AMIGAHW_SET(A2000_CLK); /* Is this correct? */
264 break;
265
266 case AMI_DRACO:
267 panic(fmt: "No support for Draco yet");
268
269 default:
270 panic(fmt: "Unknown Amiga Model");
271 }
272
273 AMIGAHW_SET(AMI_VIDEO);
274 AMIGAHW_SET(AMI_BLITTER);
275 AMIGAHW_SET(AMI_AUDIO);
276 AMIGAHW_SET(AMI_FLOPPY);
277 AMIGAHW_SET(AMI_KEYBOARD);
278 AMIGAHW_SET(AMI_MOUSE);
279 AMIGAHW_SET(AMI_SERIAL);
280 AMIGAHW_SET(AMI_PARALLEL);
281 AMIGAHW_SET(CHIP_RAM);
282 AMIGAHW_SET(PAULA);
283
284 switch (amiga_chipset) {
285 case CS_OCS:
286 case CS_ECS:
287 case CS_AGA:
288 switch (amiga_custom.deniseid & 0xf) {
289 case 0x0c:
290 AMIGAHW_SET(DENISE_HR);
291 break;
292 case 0x08:
293 AMIGAHW_SET(LISA);
294 break;
295 default:
296 AMIGAHW_SET(DENISE);
297 break;
298 }
299 break;
300 }
301 switch ((amiga_custom.vposr>>8) & 0x7f) {
302 case 0x00:
303 AMIGAHW_SET(AGNUS_PAL);
304 break;
305 case 0x10:
306 AMIGAHW_SET(AGNUS_NTSC);
307 break;
308 case 0x20:
309 case 0x21:
310 AMIGAHW_SET(AGNUS_HR_PAL);
311 break;
312 case 0x30:
313 case 0x31:
314 AMIGAHW_SET(AGNUS_HR_NTSC);
315 break;
316 case 0x22:
317 case 0x23:
318 AMIGAHW_SET(ALICE_PAL);
319 break;
320 case 0x32:
321 case 0x33:
322 AMIGAHW_SET(ALICE_NTSC);
323 break;
324 }
325 AMIGAHW_SET(ZORRO);
326
327#define AMIGAHW_ANNOUNCE(name, str) \
328 if (AMIGAHW_PRESENT(name)) \
329 pr_cont(str)
330
331 AMIGAHW_ANNOUNCE(AMI_VIDEO, "VIDEO ");
332 AMIGAHW_ANNOUNCE(AMI_BLITTER, "BLITTER ");
333 AMIGAHW_ANNOUNCE(AMBER_FF, "AMBER_FF ");
334 AMIGAHW_ANNOUNCE(AMI_AUDIO, "AUDIO ");
335 AMIGAHW_ANNOUNCE(AMI_FLOPPY, "FLOPPY ");
336 AMIGAHW_ANNOUNCE(A3000_SCSI, "A3000_SCSI ");
337 AMIGAHW_ANNOUNCE(A4000_SCSI, "A4000_SCSI ");
338 AMIGAHW_ANNOUNCE(A1200_IDE, "A1200_IDE ");
339 AMIGAHW_ANNOUNCE(A4000_IDE, "A4000_IDE ");
340 AMIGAHW_ANNOUNCE(CD_ROM, "CD_ROM ");
341 AMIGAHW_ANNOUNCE(AMI_KEYBOARD, "KEYBOARD ");
342 AMIGAHW_ANNOUNCE(AMI_MOUSE, "MOUSE ");
343 AMIGAHW_ANNOUNCE(AMI_SERIAL, "SERIAL ");
344 AMIGAHW_ANNOUNCE(AMI_PARALLEL, "PARALLEL ");
345 AMIGAHW_ANNOUNCE(A2000_CLK, "A2000_CLK ");
346 AMIGAHW_ANNOUNCE(A3000_CLK, "A3000_CLK ");
347 AMIGAHW_ANNOUNCE(CHIP_RAM, "CHIP_RAM ");
348 AMIGAHW_ANNOUNCE(PAULA, "PAULA ");
349 AMIGAHW_ANNOUNCE(DENISE, "DENISE ");
350 AMIGAHW_ANNOUNCE(DENISE_HR, "DENISE_HR ");
351 AMIGAHW_ANNOUNCE(LISA, "LISA ");
352 AMIGAHW_ANNOUNCE(AGNUS_PAL, "AGNUS_PAL ");
353 AMIGAHW_ANNOUNCE(AGNUS_NTSC, "AGNUS_NTSC ");
354 AMIGAHW_ANNOUNCE(AGNUS_HR_PAL, "AGNUS_HR_PAL ");
355 AMIGAHW_ANNOUNCE(AGNUS_HR_NTSC, "AGNUS_HR_NTSC ");
356 AMIGAHW_ANNOUNCE(ALICE_PAL, "ALICE_PAL ");
357 AMIGAHW_ANNOUNCE(ALICE_NTSC, "ALICE_NTSC ");
358 AMIGAHW_ANNOUNCE(MAGIC_REKICK, "MAGIC_REKICK ");
359 AMIGAHW_ANNOUNCE(PCMCIA, "PCMCIA ");
360 if (AMIGAHW_PRESENT(ZORRO))
361 pr_cont("ZORRO%s ", AMIGAHW_PRESENT(ZORRO3) ? "3" : "");
362 pr_cont("\n");
363
364#undef AMIGAHW_ANNOUNCE
365}
366
367
368static unsigned long amiga_random_get_entropy(void)
369{
370 /* VPOSR/VHPOSR provide at least 17 bits of data changing at 1.79 MHz */
371 return *(unsigned long *)&amiga_custom.vposr;
372}
373
374
375 /*
376 * Setup the Amiga configuration info
377 */
378
379void __init config_amiga(void)
380{
381 int i;
382
383 amiga_identify();
384
385 /* Yuk, we don't have PCI memory */
386 iomem_resource.name = "Memory";
387 for (i = 0; i < 4; i++)
388 request_resource(root: &iomem_resource, new: &((struct resource *)&mb_resources)[i]);
389
390 mach_sched_init = amiga_sched_init;
391 mach_init_IRQ = amiga_init_IRQ;
392 mach_get_model = amiga_get_model;
393 mach_get_hardware_list = amiga_get_hardware_list;
394 mach_reset = amiga_reset;
395#if IS_ENABLED(CONFIG_INPUT_M68K_BEEP)
396 mach_beep = amiga_mksound;
397#endif
398
399#ifdef CONFIG_HEARTBEAT
400 mach_heartbeat = amiga_heartbeat;
401#endif
402
403 mach_random_get_entropy = amiga_random_get_entropy;
404
405 /* Fill in the clock value (based on the 700 kHz E-Clock) */
406 amiga_colorclock = 5*amiga_eclock; /* 3.5 MHz */
407
408 /* clear all DMA bits */
409 amiga_custom.dmacon = DMAF_ALL;
410 /* ensure that the DMA master bit is set */
411 amiga_custom.dmacon = DMAF_SETCLR | DMAF_MASTER;
412
413 /* don't use Z2 RAM as system memory on Z3 capable machines */
414 if (AMIGAHW_PRESENT(ZORRO3)) {
415 int i, j;
416 u32 disabled_z2mem = 0;
417
418 for (i = 0; i < m68k_num_memory; i++) {
419 if (m68k_memory[i].addr < 16*1024*1024) {
420 if (i == 0) {
421 /* don't cut off the branch we're sitting on */
422 pr_warn("Warning: kernel runs in Zorro II memory\n");
423 continue;
424 }
425 disabled_z2mem += m68k_memory[i].size;
426 m68k_num_memory--;
427 for (j = i; j < m68k_num_memory; j++)
428 m68k_memory[j] = m68k_memory[j+1];
429 i--;
430 }
431 }
432 if (disabled_z2mem)
433 pr_info("%dK of Zorro II memory will not be used as system memory\n",
434 disabled_z2mem>>10);
435 }
436
437 /* request all RAM */
438 for (i = 0; i < m68k_num_memory; i++) {
439 ram_resource[i].name =
440 (m68k_memory[i].addr >= 0x01000000) ? "32-bit Fast RAM" :
441 (m68k_memory[i].addr < 0x00c00000) ? "16-bit Fast RAM" :
442 "16-bit Slow RAM";
443 ram_resource[i].start = m68k_memory[i].addr;
444 ram_resource[i].end = m68k_memory[i].addr+m68k_memory[i].size-1;
445 request_resource(&iomem_resource, &ram_resource[i]);
446 }
447
448 /* initialize chipram allocator */
449 amiga_chip_init();
450
451 /* our beloved beeper */
452 if (AMIGAHW_PRESENT(AMI_AUDIO))
453 amiga_init_sound();
454
455 /*
456 * if it is an A3000, set the magic bit that forces
457 * a hard rekick
458 */
459 if (AMIGAHW_PRESENT(MAGIC_REKICK))
460 *(unsigned char *)ZTWO_VADDR(0xde0002) |= 0x80;
461}
462
463static u64 amiga_read_clk(struct clocksource *cs);
464
465static struct clocksource amiga_clk = {
466 .name = "ciab",
467 .rating = 250,
468 .read = amiga_read_clk,
469 .mask = CLOCKSOURCE_MASK(32),
470 .flags = CLOCK_SOURCE_IS_CONTINUOUS,
471};
472
473static unsigned short jiffy_ticks;
474static u32 clk_total, clk_offset;
475
476static irqreturn_t ciab_timer_handler(int irq, void *dev_id)
477{
478 clk_total += jiffy_ticks;
479 clk_offset = 0;
480 legacy_timer_tick(ticks: 1);
481 timer_heartbeat();
482
483 return IRQ_HANDLED;
484}
485
486static void __init amiga_sched_init(void)
487{
488 static struct resource sched_res = {
489 .name = "timer", .start = 0x00bfd400, .end = 0x00bfd5ff,
490 };
491 jiffy_ticks = DIV_ROUND_CLOSEST(amiga_eclock, HZ);
492
493 if (request_resource(root: &mb_resources._ciab, new: &sched_res))
494 pr_warn("Cannot allocate ciab.ta{lo,hi}\n");
495 ciab.cra &= 0xC0; /* turn off timer A, continuous mode, from Eclk */
496 ciab.talo = jiffy_ticks % 256;
497 ciab.tahi = jiffy_ticks / 256;
498
499 /* install interrupt service routine for CIAB Timer A
500 *
501 * Please don't change this to use ciaa, as it interferes with the
502 * SCSI code. We'll have to take a look at this later
503 */
504 if (request_irq(IRQ_AMIGA_CIAB_TA, ciab_timer_handler, IRQF_TIMER,
505 "timer", NULL))
506 pr_err("Couldn't register timer interrupt\n");
507 /* start timer */
508 ciab.cra |= 0x11;
509
510 clocksource_register_hz(cs: &amiga_clk, hz: amiga_eclock);
511}
512
513static u64 amiga_read_clk(struct clocksource *cs)
514{
515 unsigned short hi, lo, hi2;
516 unsigned long flags;
517 u32 ticks;
518
519 local_irq_save(flags);
520
521 /* read CIA B timer A current value */
522 hi = ciab.tahi;
523 lo = ciab.talo;
524 hi2 = ciab.tahi;
525
526 if (hi != hi2) {
527 lo = ciab.talo;
528 hi = hi2;
529 }
530
531 ticks = hi << 8 | lo;
532
533 if (ticks > jiffy_ticks / 2)
534 /* check for pending interrupt */
535 if (cia_set_irq(&ciab_base, 0) & CIA_ICR_TA)
536 clk_offset = jiffy_ticks;
537
538 ticks = jiffy_ticks - ticks;
539 ticks += clk_offset + clk_total;
540
541 local_irq_restore(flags);
542
543 return ticks;
544}
545
546static void amiga_reset(void) __noreturn;
547
548static void amiga_reset(void)
549{
550 unsigned long jmp_addr040 = virt_to_phys(address: &&jmp_addr_label040);
551 unsigned long jmp_addr = virt_to_phys(address: &&jmp_addr_label);
552
553 local_irq_disable();
554 if (CPU_IS_040_OR_060)
555 /* Setup transparent translation registers for mapping
556 * of 16 MB kernel segment before disabling translation
557 */
558 asm volatile ("\n"
559 " move.l %0,%%d0\n"
560 " and.l #0xff000000,%%d0\n"
561 " or.w #0xe020,%%d0\n" /* map 16 MB, enable, cacheable */
562 " .chip 68040\n"
563 " movec %%d0,%%itt0\n"
564 " movec %%d0,%%dtt0\n"
565 " .chip 68k\n"
566 " jmp %0@\n"
567 : /* no outputs */
568 : "a" (jmp_addr040)
569 : "d0");
570 else
571 /* for 680[23]0, just disable translation and jump to the physical
572 * address of the label
573 */
574 asm volatile ("\n"
575 " pmove %%tc,%@\n"
576 " bclr #7,%@\n"
577 " pmove %@,%%tc\n"
578 " jmp %0@\n"
579 : /* no outputs */
580 : "a" (jmp_addr));
581jmp_addr_label040:
582 /* disable translation on '040 now */
583 asm volatile ("\n"
584 " moveq #0,%%d0\n"
585 " .chip 68040\n"
586 " movec %%d0,%%tc\n" /* disable MMU */
587 " .chip 68k\n"
588 : /* no outputs */
589 : /* no inputs */
590 : "d0");
591
592 jmp_addr_label:
593 /* pickup reset address from AmigaOS ROM, reset devices and jump
594 * to reset address
595 */
596 asm volatile ("\n"
597 " move.w #0x2700,%sr\n"
598 " lea 0x01000000,%a0\n"
599 " sub.l %a0@(-0x14),%a0\n"
600 " move.l %a0@(4),%a0\n"
601 " subq.l #2,%a0\n"
602 " jra 1f\n"
603 /* align on a longword boundary */
604 " " __ALIGN_STR "\n"
605 "1:\n"
606 " reset\n"
607 " jmp %a0@");
608
609 for (;;)
610 ;
611}
612
613
614 /*
615 * Debugging
616 */
617
618#define SAVEKMSG_MAXMEM 128*1024
619
620#define SAVEKMSG_MAGIC1 0x53415645 /* 'SAVE' */
621#define SAVEKMSG_MAGIC2 0x4B4D5347 /* 'KMSG' */
622
623struct savekmsg {
624 unsigned long magic1; /* SAVEKMSG_MAGIC1 */
625 unsigned long magic2; /* SAVEKMSG_MAGIC2 */
626 unsigned long magicptr; /* address of magic1 */
627 unsigned long size;
628 char data[];
629};
630
631static struct savekmsg *savekmsg;
632
633static void amiga_mem_console_write(struct console *co, const char *s,
634 unsigned int count)
635{
636 if (savekmsg->size + count <= SAVEKMSG_MAXMEM-sizeof(struct savekmsg)) {
637 memcpy(savekmsg->data + savekmsg->size, s, count);
638 savekmsg->size += count;
639 }
640}
641
642static int __init amiga_savekmsg_setup(char *arg)
643{
644 bool registered;
645
646 if (!MACH_IS_AMIGA || strcmp(arg, "mem"))
647 return 0;
648
649 if (amiga_chip_size < SAVEKMSG_MAXMEM) {
650 pr_err("Not enough chipram for debugging\n");
651 return -ENOMEM;
652 }
653
654 /* Just steal the block, the chipram allocator isn't functional yet */
655 amiga_chip_size -= SAVEKMSG_MAXMEM;
656 savekmsg = ZTWO_VADDR(CHIP_PHYSADDR + amiga_chip_size);
657 savekmsg->magic1 = SAVEKMSG_MAGIC1;
658 savekmsg->magic2 = SAVEKMSG_MAGIC2;
659 savekmsg->magicptr = ZTWO_PADDR(savekmsg);
660 savekmsg->size = 0;
661
662 registered = !!amiga_console_driver.write;
663 amiga_console_driver.write = amiga_mem_console_write;
664 if (!registered)
665 register_console(&amiga_console_driver);
666 return 0;
667}
668
669early_param("debug", amiga_savekmsg_setup);
670
671static void amiga_serial_putc(char c)
672{
673 amiga_custom.serdat = (unsigned char)c | 0x100;
674 while (!(amiga_custom.serdatr & 0x2000))
675 ;
676}
677
678static void amiga_serial_console_write(struct console *co, const char *s,
679 unsigned int count)
680{
681 while (count--) {
682 if (*s == '\n')
683 amiga_serial_putc(c: '\r');
684 amiga_serial_putc(c: *s++);
685 }
686}
687
688#if 0
689void amiga_serial_puts(const char *s)
690{
691 amiga_serial_console_write(NULL, s, strlen(s));
692}
693
694int amiga_serial_console_wait_key(struct console *co)
695{
696 int ch;
697
698 while (!(amiga_custom.intreqr & IF_RBF))
699 barrier();
700 ch = amiga_custom.serdatr & 0xff;
701 /* clear the interrupt, so that another character can be read */
702 amiga_custom.intreq = IF_RBF;
703 return ch;
704}
705
706void amiga_serial_gets(struct console *co, char *s, int len)
707{
708 int ch, cnt = 0;
709
710 while (1) {
711 ch = amiga_serial_console_wait_key(co);
712
713 /* Check for backspace. */
714 if (ch == 8 || ch == 127) {
715 if (cnt == 0) {
716 amiga_serial_putc('\007');
717 continue;
718 }
719 cnt--;
720 amiga_serial_puts("\010 \010");
721 continue;
722 }
723
724 /* Check for enter. */
725 if (ch == 10 || ch == 13)
726 break;
727
728 /* See if line is too long. */
729 if (cnt >= len + 1) {
730 amiga_serial_putc(7);
731 cnt--;
732 continue;
733 }
734
735 /* Store and echo character. */
736 s[cnt++] = ch;
737 amiga_serial_putc(ch);
738 }
739 /* Print enter. */
740 amiga_serial_puts("\r\n");
741 s[cnt] = 0;
742}
743#endif
744
745static int __init amiga_debug_setup(char *arg)
746{
747 bool registered;
748
749 if (!MACH_IS_AMIGA || strcmp(arg, "ser"))
750 return 0;
751
752 /* no initialization required (?) */
753 registered = !!amiga_console_driver.write;
754 amiga_console_driver.write = amiga_serial_console_write;
755 if (!registered)
756 register_console(&amiga_console_driver);
757 return 0;
758}
759
760early_param("debug", amiga_debug_setup);
761
762#ifdef CONFIG_HEARTBEAT
763static void amiga_heartbeat(int on)
764{
765 if (on)
766 ciaa.pra &= ~2;
767 else
768 ciaa.pra |= 2;
769}
770#endif
771
772 /*
773 * Amiga specific parts of /proc
774 */
775
776static void amiga_get_model(char *model)
777{
778 strcpy(p: model, q: amiga_model_name);
779}
780
781
782static void amiga_get_hardware_list(struct seq_file *m)
783{
784 if (AMIGAHW_PRESENT(CHIP_RAM))
785 seq_printf(m, "Chip RAM:\t%ldK\n", amiga_chip_size>>10);
786 seq_printf(m, fmt: "PS Freq:\t%dHz\nEClock Freq:\t%ldHz\n",
787 amiga_psfreq, amiga_eclock);
788 if (AMIGAHW_PRESENT(AMI_VIDEO)) {
789 char *type;
790 switch (amiga_chipset) {
791 case CS_OCS:
792 type = "OCS";
793 break;
794 case CS_ECS:
795 type = "ECS";
796 break;
797 case CS_AGA:
798 type = "AGA";
799 break;
800 default:
801 type = "Old or Unknown";
802 break;
803 }
804 seq_printf(m, fmt: "Graphics:\t%s\n", type);
805 }
806
807#define AMIGAHW_ANNOUNCE(name, str) \
808 if (AMIGAHW_PRESENT(name)) \
809 seq_printf (m, "\t%s\n", str)
810
811 seq_puts(m, s: "Detected hardware:\n");
812 AMIGAHW_ANNOUNCE(AMI_VIDEO, "Amiga Video");
813 AMIGAHW_ANNOUNCE(AMI_BLITTER, "Blitter");
814 AMIGAHW_ANNOUNCE(AMBER_FF, "Amber Flicker Fixer");
815 AMIGAHW_ANNOUNCE(AMI_AUDIO, "Amiga Audio");
816 AMIGAHW_ANNOUNCE(AMI_FLOPPY, "Floppy Controller");
817 AMIGAHW_ANNOUNCE(A3000_SCSI, "SCSI Controller WD33C93 (A3000 style)");
818 AMIGAHW_ANNOUNCE(A4000_SCSI, "SCSI Controller NCR53C710 (A4000T style)");
819 AMIGAHW_ANNOUNCE(A1200_IDE, "IDE Interface (A1200 style)");
820 AMIGAHW_ANNOUNCE(A4000_IDE, "IDE Interface (A4000 style)");
821 AMIGAHW_ANNOUNCE(CD_ROM, "Internal CD ROM drive");
822 AMIGAHW_ANNOUNCE(AMI_KEYBOARD, "Keyboard");
823 AMIGAHW_ANNOUNCE(AMI_MOUSE, "Mouse Port");
824 AMIGAHW_ANNOUNCE(AMI_SERIAL, "Serial Port");
825 AMIGAHW_ANNOUNCE(AMI_PARALLEL, "Parallel Port");
826 AMIGAHW_ANNOUNCE(A2000_CLK, "Hardware Clock (A2000 style)");
827 AMIGAHW_ANNOUNCE(A3000_CLK, "Hardware Clock (A3000 style)");
828 AMIGAHW_ANNOUNCE(CHIP_RAM, "Chip RAM");
829 AMIGAHW_ANNOUNCE(PAULA, "Paula 8364");
830 AMIGAHW_ANNOUNCE(DENISE, "Denise 8362");
831 AMIGAHW_ANNOUNCE(DENISE_HR, "Denise 8373");
832 AMIGAHW_ANNOUNCE(LISA, "Lisa 8375");
833 AMIGAHW_ANNOUNCE(AGNUS_PAL, "Normal/Fat PAL Agnus 8367/8371");
834 AMIGAHW_ANNOUNCE(AGNUS_NTSC, "Normal/Fat NTSC Agnus 8361/8370");
835 AMIGAHW_ANNOUNCE(AGNUS_HR_PAL, "Fat Hires PAL Agnus 8372");
836 AMIGAHW_ANNOUNCE(AGNUS_HR_NTSC, "Fat Hires NTSC Agnus 8372");
837 AMIGAHW_ANNOUNCE(ALICE_PAL, "PAL Alice 8374");
838 AMIGAHW_ANNOUNCE(ALICE_NTSC, "NTSC Alice 8374");
839 AMIGAHW_ANNOUNCE(MAGIC_REKICK, "Magic Hard Rekick");
840 AMIGAHW_ANNOUNCE(PCMCIA, "PCMCIA Slot");
841#ifdef CONFIG_ZORRO
842 if (AMIGAHW_PRESENT(ZORRO))
843 seq_printf(m, "\tZorro II%s AutoConfig: %d Expansion "
844 "Device%s\n",
845 AMIGAHW_PRESENT(ZORRO3) ? "I" : "",
846 zorro_num_autocon, str_plural(zorro_num_autocon));
847#endif /* CONFIG_ZORRO */
848
849#undef AMIGAHW_ANNOUNCE
850}
851
852/*
853 * The Amiga keyboard driver needs key_maps, but we cannot export it in
854 * drivers/char/defkeymap.c, as it is autogenerated
855 */
856#ifdef CONFIG_VT
857EXPORT_SYMBOL_GPL(key_maps);
858#endif
859

source code of linux/arch/m68k/amiga/config.c