config.c

  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(data);
149		break;
150
151	case BI_AMIGA_ECLOCK:
152		amiga_eclock = be32_to_cpup(data);
153		break;
154
155	case BI_AMIGA_CHIPSET:
156		amiga_chipset = be32_to_cpup(data);
157		break;
158
159	case BI_AMIGA_CHIP_SIZE:
160		amiga_chip_size = be32_to_cpup(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("No support for Draco yet");
268
269	default:
270		panic("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(&iomem_resource, &((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(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(&mb_resources._ciab, &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(&amiga_clk, 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(&&jmp_addr_label040);
551	unsigned long jmp_addr = virt_to_phys(&&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('\r');
684		amiga_serial_putc(*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(model, 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, "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, "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, "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