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