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Merge tag 'pinctrl-v4.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw...
[linux-2.6-block.git] / arch / m68k / amiga / config.c
CommitLineData
1da177e4
LT		 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
1da177e4
LT		 15#include <linux/types.h>
16#include <linux/kernel.h>
17#include <linux/mm.h>
813dcf7a 18#include <linux/seq_file.h>
1da177e4
LT		 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>
1da177e4 26#include <linux/zorro.h>
8b169fa2 27#include <linux/module.h>
39d2d99d 28#include <linux/keyboard.h>
1da177e4
LT		 29
30#include <asm/bootinfo.h>
4c3c522b 31#include <asm/bootinfo-amiga.h>
bd9ba8f4 32#include <asm/byteorder.h>
1da177e4 33#include <asm/setup.h>
1da177e4
LT		 34#include <asm/pgtable.h>
35#include <asm/amigahw.h>
36#include <asm/amigaints.h>
37#include <asm/irq.h>
1da177e4
LT		 38#include <asm/machdep.h>
39#include <asm/io.h>
40
0795dbcc 41static unsigned long amiga_model;
8b169fa2 42
1da177e4 43unsigned long amiga_eclock;
8b169fa2
AB		 44EXPORT_SYMBOL(amiga_eclock);
45
1da177e4 46unsigned long amiga_colorclock;
8b169fa2
AB		 47EXPORT_SYMBOL(amiga_colorclock);
48
1da177e4 49unsigned long amiga_chipset;
8b169fa2
AB		 50EXPORT_SYMBOL(amiga_chipset);
51
1da177e4 52unsigned char amiga_vblank;
8468afc0
AB		 53EXPORT_SYMBOL(amiga_vblank);
54
0795dbcc 55static unsigned char amiga_psfreq;
8b169fa2 56
1da177e4 57struct amiga_hw_present amiga_hw_present;
8b169fa2 58EXPORT_SYMBOL(amiga_hw_present);
1da177e4
LT		 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 = {
6ff5801a
RZ		 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,
1da177e4
LT		 91};
92
93static char amiga_model_name[13] = "Amiga ";
94
40220c1a 95static void amiga_sched_init(irq_handler_t handler);
1da177e4 96static void amiga_get_model(char *model);
813dcf7a 97static void amiga_get_hardware_list(struct seq_file *m);
1da177e4 98/* amiga specific timer functions */
c8d5ba18 99static u32 amiga_gettimeoffset(void);
6ff5801a
RZ		 100extern void amiga_mksound(unsigned int count, unsigned int ticks);
101static void amiga_reset(void);
1da177e4 102extern void amiga_init_sound(void);
1da177e4
LT		 103static void amiga_mem_console_write(struct console *co, const char *b,
104 unsigned int count);
1da177e4
LT		 105#ifdef CONFIG_HEARTBEAT
106static void amiga_heartbeat(int on);
107#endif
108
109static struct console amiga_console_driver = {
6ff5801a
RZ		 110 .name = "debug",
111 .flags = CON_PRINTBUFFER,
112 .index = -1,
1da177e4
LT		 113};
114
115
116 /*
117 * Motherboard Resources present in all Amiga models
118 */
119
120static struct {
6ff5801a 121 struct resource _ciab, _ciaa, _custom, _kickstart;
1da177e4 122} mb_resources = {
6ff5801a
RZ		 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 }
1da177e4
LT		 135};
136
1da177e4
LT		 137static struct resource ram_resource[NUM_MEMINFO];
138
139
140 /*
141 * Parse an Amiga-specific record in the bootinfo
142 */
143
a4df02a2 144int __init amiga_parse_bootinfo(const struct bi_record *record)
1da177e4 145{
6ff5801a 146 int unknown = 0;
abe48101 147 const void *data = record->data;
1da177e4 148
abe48101 149 switch (be16_to_cpu(record->tag)) {
1da177e4 150 case BI_AMIGA_MODEL:
abe48101 151 amiga_model = be32_to_cpup(data);
6ff5801a 152 break;
1da177e4
LT		 153
154 case BI_AMIGA_ECLOCK:
abe48101 155 amiga_eclock = be32_to_cpup(data);
6ff5801a 156 break;
1da177e4
LT		 157
158 case BI_AMIGA_CHIPSET:
abe48101 159 amiga_chipset = be32_to_cpup(data);
6ff5801a 160 break;
1da177e4
LT		 161
162 case BI_AMIGA_CHIP_SIZE:
abe48101 163 amiga_chip_size = be32_to_cpup(data);
6ff5801a 164 break;
1da177e4
LT		 165
166 case BI_AMIGA_VBLANK:
abe48101 167 amiga_vblank = *(const __u8 *)data;
6ff5801a 168 break;
1da177e4
LT		 169
170 case BI_AMIGA_PSFREQ:
abe48101 171 amiga_psfreq = *(const __u8 *)data;
6ff5801a 172 break;
1da177e4
LT		 173
174 case BI_AMIGA_AUTOCON:
175#ifdef CONFIG_ZORRO
6ff5801a 176 if (zorro_num_autocon < ZORRO_NUM_AUTO) {
abe48101 177 const struct ConfigDev *cd = data;
c293738e 178 struct zorro_dev_init *dev = &zorro_autocon_init[zorro_num_autocon++];
6ff5801a 179 dev->rom = cd->cd_Rom;
bd9ba8f4
GU		 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);
6ff5801a 184 } else
f296401b 185 pr_warn("amiga_parse_bootinfo: too many AutoConfig devices\n");
1da177e4 186#endif /* CONFIG_ZORRO */
6ff5801a 187 break;
1da177e4
LT		 188
189 case BI_AMIGA_SERPER:
6ff5801a
RZ		 190 /* serial port period: ignored here */
191 break;
1da177e4
LT		 192
193 default:
6ff5801a
RZ		 194 unknown = 1;
195 }
196 return unknown;
1da177e4
LT		 197}
198
199 /*
200 * Identify builtin hardware
201 */
202
203static void __init amiga_identify(void)
204{
6ff5801a
RZ		 205 /* Fill in some default values, if necessary */
206 if (amiga_eclock == 0)
207 amiga_eclock = 709379;
1da177e4 208
6ff5801a
RZ		 209 memset(&amiga_hw_present, 0, sizeof(amiga_hw_present));
210
f296401b 211 pr_info("Amiga hardware found: ");
6ff5801a 212 if (amiga_model >= AMI_500 && amiga_model <= AMI_DRACO) {
f296401b 213 pr_cont("[%s] ", amiga_models[amiga_model-AMI_500]);
6ff5801a
RZ		 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)) \
f296401b 324 pr_cont(str)
6ff5801a
RZ		 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))
f296401b
FF		 356 pr_cont("ZORRO%s ", AMIGAHW_PRESENT(ZORRO3) ? "3" : "");
357 pr_cont("\n");
1da177e4
LT		 358
359#undef AMIGAHW_ANNOUNCE
360}
361
50190edb
GU		 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
1da177e4
LT		 370 /*
371 * Setup the Amiga configuration info
372 */
373
374void __init config_amiga(void)
375{
6ff5801a
RZ		 376 int i;
377
6ff5801a
RZ		 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;
c8d5ba18 389 arch_gettimeoffset = amiga_gettimeoffset;
6ff5801a
RZ		 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
6ff5801a 398 mach_reset = amiga_reset;
a1a9e88f 399#if IS_ENABLED(CONFIG_INPUT_M68K_BEEP)
6ff5801a 400 mach_beep = amiga_mksound;
1da177e4
LT		 401#endif
402
403#ifdef CONFIG_HEARTBEAT
6ff5801a 404 mach_heartbeat = amiga_heartbeat;
1da177e4
LT		 405#endif
406
50190edb
GU		 407 mach_random_get_entropy = amiga_random_get_entropy;
408
0795dbcc 409 /* Fill in the clock value (based on the 700 kHz E-Clock) */
6ff5801a
RZ		 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 */
f296401b 426 pr_warn("Warning: kernel runs in Zorro II memory\n");
6ff5801a
RZ		 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)
f296401b
FF		 437 pr_info("%dK of Zorro II memory will not be used as system memory\n",
438 disabled_z2mem>>10);
6ff5801a
RZ		 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
6ff5801a
RZ		 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;
1da177e4
LT		 465}
466
467static unsigned short jiffy_ticks;
468
40220c1a 469static void __init amiga_sched_init(irq_handler_t timer_routine)
1da177e4
LT		 470{
471 static struct resource sched_res = {
6ff5801a 472 .name = "timer", .start = 0x00bfd400, .end = 0x00bfd5ff,
1da177e4 473 };
1a0caf41 474 jiffy_ticks = DIV_ROUND_CLOSEST(amiga_eclock, HZ);
1da177e4
LT		 475
476 if (request_resource(&mb_resources._ciab, &sched_res))
f296401b 477 pr_warn("Cannot allocate ciab.ta{lo,hi}\n");
1da177e4
LT		 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 */
66acd258
GU		 487 if (request_irq(IRQ_AMIGA_CIAB_TA, timer_routine, 0, "timer", NULL))
488 pr_err("Couldn't register timer interrupt\n");
1da177e4
LT		 489 /* start timer */
490 ciab.cra |= 0x11;
491}
492
493#define TICK_SIZE 10000
494
495/* This is always executed with interrupts disabled. */
c8d5ba18 496static u32 amiga_gettimeoffset(void)
1da177e4
LT		 497{
498 unsigned short hi, lo, hi2;
c8d5ba18 499 u32 ticks, offset = 0;
1da177e4
LT		 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
c8d5ba18 521 return (ticks + offset) * 1000;
1da177e4
LT		 522}
523
ff2d8b19 524static void amiga_reset(void) __noreturn;
1da177e4 525
6ff5801a 526static void amiga_reset(void)
1da177e4 527{
6ff5801a
RZ		 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 ;
1da177e4
LT		 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 {
6ff5801a
RZ		 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];
1da177e4
LT		 607};
608
609static struct savekmsg *savekmsg;
610
611static void amiga_mem_console_write(struct console *co, const char *s,
612 unsigned int count)
613{
6ff5801a
RZ		 614 if (savekmsg->size + count <= SAVEKMSG_MAXMEM-sizeof(struct savekmsg)) {
615 memcpy(savekmsg->data + savekmsg->size, s, count);
616 savekmsg->size += count;
617 }
1da177e4
LT		 618}
619
d6713b40 620static int __init amiga_savekmsg_setup(char *arg)
1da177e4 621{
8a09cec2
GU		 622 bool registered;
623
d6713b40 624 if (!MACH_IS_AMIGA || strcmp(arg, "mem"))
5df1abdb 625 return 0;
d6713b40 626
5df1abdb
GU		 627 if (amiga_chip_size < SAVEKMSG_MAXMEM) {
628 pr_err("Not enough chipram for debugging\n");
629 return -ENOMEM;
d6713b40
RZ		 630 }
631
5df1abdb
GU		 632 /* Just steal the block, the chipram allocator isn't functional yet */
633 amiga_chip_size -= SAVEKMSG_MAXMEM;
6112ea08 634 savekmsg = ZTWO_VADDR(CHIP_PHYSADDR + amiga_chip_size);
6ff5801a
RZ		 635 savekmsg->magic1 = SAVEKMSG_MAGIC1;
636 savekmsg->magic2 = SAVEKMSG_MAGIC2;
637 savekmsg->magicptr = ZTWO_PADDR(savekmsg);
638 savekmsg->size = 0;
d6713b40 639
8a09cec2 640 registered = !!amiga_console_driver.write;
d6713b40 641 amiga_console_driver.write = amiga_mem_console_write;
8a09cec2
GU		 642 if (!registered)
643 register_console(&amiga_console_driver);
d6713b40 644 return 0;
1da177e4
LT		 645}
646
d6713b40
RZ		 647early_param("debug", amiga_savekmsg_setup);
648
1da177e4
LT		 649static void amiga_serial_putc(char c)
650{
6ff5801a
RZ		 651 amiga_custom.serdat = (unsigned char)c | 0x100;
652 while (!(amiga_custom.serdatr & 0x2000))
653 ;
1da177e4
LT		 654}
655
0795dbcc
AB		 656static void amiga_serial_console_write(struct console *co, const char *s,
657 unsigned int count)
1da177e4 658{
6ff5801a
RZ		 659 while (count--) {
660 if (*s == '\n')
661 amiga_serial_putc('\r');
662 amiga_serial_putc(*s++);
663 }
1da177e4
LT		 664}
665
0795dbcc 666#if 0
1da177e4
LT		 667void amiga_serial_puts(const char *s)
668{
6ff5801a 669 amiga_serial_console_write(NULL, s, strlen(s));
1da177e4
LT		 670}
671
672int amiga_serial_console_wait_key(struct console *co)
673{
6ff5801a
RZ		 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;
1da177e4
LT		 682}
683
684void amiga_serial_gets(struct console *co, char *s, int len)
685{
6ff5801a
RZ		 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 }
1da177e4 701
6ff5801a
RZ		 702 /* Check for enter. */
703 if (ch == 10 || ch == 13)
704 break;
1da177e4 705
6ff5801a
RZ		 706 /* See if line is too long. */
707 if (cnt >= len + 1) {
708 amiga_serial_putc(7);
709 cnt--;
710 continue;
711 }
1da177e4 712
6ff5801a
RZ		 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;
1da177e4
LT		 720}
721#endif
722
d6713b40 723static int __init amiga_debug_setup(char *arg)
1da177e4 724{
8a09cec2
GU		 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)
1da177e4 734 register_console(&amiga_console_driver);
d6713b40 735 return 0;
1da177e4
LT		 736}
737
d6713b40
RZ		 738early_param("debug", amiga_debug_setup);
739
1da177e4
LT		 740#ifdef CONFIG_HEARTBEAT
741static void amiga_heartbeat(int on)
742{
6ff5801a
RZ		 743 if (on)
744 ciaa.pra &= ~2;
745 else
746 ciaa.pra |= 2;
1da177e4
LT		 747}
748#endif
749
750 /*
751 * Amiga specific parts of /proc
752 */
753
754static void amiga_get_model(char *model)
755{
6ff5801a 756 strcpy(model, amiga_model_name);
1da177e4
LT		 757}
758
759
813dcf7a 760static void amiga_get_hardware_list(struct seq_file *m)
1da177e4 761{
6ff5801a 762 if (AMIGAHW_PRESENT(CHIP_RAM))
813dcf7a
AD		 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",
6ff5801a
RZ		 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 }
813dcf7a 782 seq_printf(m, "Graphics:\t%s\n", type);
1da177e4 783 }
1da177e4
LT		 784
785#define AMIGAHW_ANNOUNCE(name, str) \
6ff5801a 786 if (AMIGAHW_PRESENT(name)) \
813dcf7a 787 seq_printf (m, "\t%s\n", str)
6ff5801a 788
813dcf7a 789 seq_printf (m, "Detected hardware:\n");
6ff5801a
RZ		 790
791 AMIGAHW_ANNOUNCE(AMI_VIDEO, "Amiga Video");
792 AMIGAHW_ANNOUNCE(AMI_BLITTER, "Blitter");
793 AMIGAHW_ANNOUNCE(AMBER_FF, "Amber Flicker Fixer");
794 AMIGAHW_ANNOUNCE(AMI_AUDIO, "Amiga Audio");
795 AMIGAHW_ANNOUNCE(AMI_FLOPPY, "Floppy Controller");
796 AMIGAHW_ANNOUNCE(A3000_SCSI, "SCSI Controller WD33C93 (A3000 style)");
797 AMIGAHW_ANNOUNCE(A4000_SCSI, "SCSI Controller NCR53C710 (A4000T style)");
798 AMIGAHW_ANNOUNCE(A1200_IDE, "IDE Interface (A1200 style)");
799 AMIGAHW_ANNOUNCE(A4000_IDE, "IDE Interface (A4000 style)");
800 AMIGAHW_ANNOUNCE(CD_ROM, "Internal CD ROM drive");
801 AMIGAHW_ANNOUNCE(AMI_KEYBOARD, "Keyboard");
802 AMIGAHW_ANNOUNCE(AMI_MOUSE, "Mouse Port");
803 AMIGAHW_ANNOUNCE(AMI_SERIAL, "Serial Port");
804 AMIGAHW_ANNOUNCE(AMI_PARALLEL, "Parallel Port");
805 AMIGAHW_ANNOUNCE(A2000_CLK, "Hardware Clock (A2000 style)");
806 AMIGAHW_ANNOUNCE(A3000_CLK, "Hardware Clock (A3000 style)");
807 AMIGAHW_ANNOUNCE(CHIP_RAM, "Chip RAM");
808 AMIGAHW_ANNOUNCE(PAULA, "Paula 8364");
809 AMIGAHW_ANNOUNCE(DENISE, "Denise 8362");
810 AMIGAHW_ANNOUNCE(DENISE_HR, "Denise 8373");
811 AMIGAHW_ANNOUNCE(LISA, "Lisa 8375");
812 AMIGAHW_ANNOUNCE(AGNUS_PAL, "Normal/Fat PAL Agnus 8367/8371");
813 AMIGAHW_ANNOUNCE(AGNUS_NTSC, "Normal/Fat NTSC Agnus 8361/8370");
814 AMIGAHW_ANNOUNCE(AGNUS_HR_PAL, "Fat Hires PAL Agnus 8372");
815 AMIGAHW_ANNOUNCE(AGNUS_HR_NTSC, "Fat Hires NTSC Agnus 8372");
816 AMIGAHW_ANNOUNCE(ALICE_PAL, "PAL Alice 8374");
817 AMIGAHW_ANNOUNCE(ALICE_NTSC, "NTSC Alice 8374");
818 AMIGAHW_ANNOUNCE(MAGIC_REKICK, "Magic Hard Rekick");
819 AMIGAHW_ANNOUNCE(PCMCIA, "PCMCIA Slot");
1da177e4 820#ifdef CONFIG_ZORRO
6ff5801a 821 if (AMIGAHW_PRESENT(ZORRO))
813dcf7a 822 seq_printf(m, "\tZorro II%s AutoConfig: %d Expansion "
6ff5801a
RZ		 823 "Device%s\n",
824 AMIGAHW_PRESENT(ZORRO3) ? "I" : "",
825 zorro_num_autocon, zorro_num_autocon == 1 ? "" : "s");
1da177e4
LT		 826#endif /* CONFIG_ZORRO */
827
828#undef AMIGAHW_ANNOUNCE
1da177e4 829}
39d2d99d
GU		 830
831/*
832 * The Amiga keyboard driver needs key_maps, but we cannot export it in
833 * drivers/char/defkeymap.c, as it is autogenerated
834 */
835#ifdef CONFIG_HW_CONSOLE
836EXPORT_SYMBOL_GPL(key_maps);
837#endif
Linux 6.x block layer and io_uring tree(s)