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TOMOYO Linux Cross Reference
Linux/arch/m68k/amiga/config.c

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  1 /*
  2  *  linux/arch/m68k/amiga/config.c
  3  *
  4  *  Copyright (C) 1993 Hamish Macdonald
  5  *
  6  * This file is subject to the terms and conditions of the GNU General Public
  7  * License.  See the file COPYING in the main directory of this archive
  8  * for more details.
  9  */
 10 
 11 /*
 12  * Miscellaneous Amiga stuff
 13  */
 14 
 15 #include <linux/types.h>
 16 #include <linux/kernel.h>
 17 #include <linux/mm.h>
 18 #include <linux/seq_file.h>
 19 #include <linux/tty.h>
 20 #include <linux/console.h>
 21 #include <linux/rtc.h>
 22 #include <linux/init.h>
 23 #include <linux/vt_kern.h>
 24 #include <linux/delay.h>
 25 #include <linux/interrupt.h>
 26 #include <linux/zorro.h>
 27 #include <linux/module.h>
 28 #include <linux/keyboard.h>
 29 
 30 #include <asm/bootinfo.h>
 31 #include <asm/bootinfo-amiga.h>
 32 #include <asm/byteorder.h>
 33 #include <asm/setup.h>
 34 #include <asm/pgtable.h>
 35 #include <asm/amigahw.h>
 36 #include <asm/amigaints.h>
 37 #include <asm/irq.h>
 38 #include <asm/rtc.h>
 39 #include <asm/machdep.h>
 40 #include <asm/io.h>
 41 
 42 static unsigned long amiga_model;
 43 
 44 unsigned long amiga_eclock;
 45 EXPORT_SYMBOL(amiga_eclock);
 46 
 47 unsigned long amiga_colorclock;
 48 EXPORT_SYMBOL(amiga_colorclock);
 49 
 50 unsigned long amiga_chipset;
 51 EXPORT_SYMBOL(amiga_chipset);
 52 
 53 unsigned char amiga_vblank;
 54 EXPORT_SYMBOL(amiga_vblank);
 55 
 56 static unsigned char amiga_psfreq;
 57 
 58 struct amiga_hw_present amiga_hw_present;
 59 EXPORT_SYMBOL(amiga_hw_present);
 60 
 61 static char s_a500[] __initdata = "A500";
 62 static char s_a500p[] __initdata = "A500+";
 63 static char s_a600[] __initdata = "A600";
 64 static char s_a1000[] __initdata = "A1000";
 65 static char s_a1200[] __initdata = "A1200";
 66 static char s_a2000[] __initdata = "A2000";
 67 static char s_a2500[] __initdata = "A2500";
 68 static char s_a3000[] __initdata = "A3000";
 69 static char s_a3000t[] __initdata = "A3000T";
 70 static char s_a3000p[] __initdata = "A3000+";
 71 static char s_a4000[] __initdata = "A4000";
 72 static char s_a4000t[] __initdata = "A4000T";
 73 static char s_cdtv[] __initdata = "CDTV";
 74 static char s_cd32[] __initdata = "CD32";
 75 static char s_draco[] __initdata = "Draco";
 76 static 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 
 94 static char amiga_model_name[13] = "Amiga ";
 95 
 96 static void amiga_sched_init(irq_handler_t handler);
 97 static void amiga_get_model(char *model);
 98 static void amiga_get_hardware_list(struct seq_file *m);
 99 /* amiga specific timer functions */
100 static u32 amiga_gettimeoffset(void);
101 extern void amiga_mksound(unsigned int count, unsigned int ticks);
102 static void amiga_reset(void);
103 extern void amiga_init_sound(void);
104 static void amiga_mem_console_write(struct console *co, const char *b,
105                                     unsigned int count);
106 #ifdef CONFIG_HEARTBEAT
107 static void amiga_heartbeat(int on);
108 #endif
109 
110 static struct console amiga_console_driver = {
111         .name   = "debug",
112         .flags  = CON_PRINTBUFFER,
113         .index  = -1,
114 };
115 
116 
117     /*
118      *  Motherboard Resources present in all Amiga models
119      */
120 
121 static struct {
122         struct resource _ciab, _ciaa, _custom, _kickstart;
123 } mb_resources = {
124         ._ciab = {
125                 .name = "CIA B", .start = 0x00bfd000, .end = 0x00bfdfff
126         },
127         ._ciaa = {
128                 .name = "CIA A", .start = 0x00bfe000, .end = 0x00bfefff
129         },
130         ._custom = {
131                 .name = "Custom I/O", .start = 0x00dff000, .end = 0x00dfffff
132         },
133         ._kickstart = {
134                 .name = "Kickstart ROM", .start = 0x00f80000, .end = 0x00ffffff
135         }
136 };
137 
138 static struct resource ram_resource[NUM_MEMINFO];
139 
140 
141     /*
142      *  Parse an Amiga-specific record in the bootinfo
143      */
144 
145 int __init amiga_parse_bootinfo(const struct bi_record *record)
146 {
147         int unknown = 0;
148         const void *data = record->data;
149 
150         switch (be16_to_cpu(record->tag)) {
151         case BI_AMIGA_MODEL:
152                 amiga_model = be32_to_cpup(data);
153                 break;
154 
155         case BI_AMIGA_ECLOCK:
156                 amiga_eclock = be32_to_cpup(data);
157                 break;
158 
159         case BI_AMIGA_CHIPSET:
160                 amiga_chipset = be32_to_cpup(data);
161                 break;
162 
163         case BI_AMIGA_CHIP_SIZE:
164                 amiga_chip_size = be32_to_cpup(data);
165                 break;
166 
167         case BI_AMIGA_VBLANK:
168                 amiga_vblank = *(const __u8 *)data;
169                 break;
170 
171         case BI_AMIGA_PSFREQ:
172                 amiga_psfreq = *(const __u8 *)data;
173                 break;
174 
175         case BI_AMIGA_AUTOCON:
176 #ifdef CONFIG_ZORRO
177                 if (zorro_num_autocon < ZORRO_NUM_AUTO) {
178                         const struct ConfigDev *cd = data;
179                         struct zorro_dev_init *dev = &zorro_autocon_init[zorro_num_autocon++];
180                         dev->rom = cd->cd_Rom;
181                         dev->slotaddr = be16_to_cpu(cd->cd_SlotAddr);
182                         dev->slotsize = be16_to_cpu(cd->cd_SlotSize);
183                         dev->boardaddr = be32_to_cpu(cd->cd_BoardAddr);
184                         dev->boardsize = be32_to_cpu(cd->cd_BoardSize);
185                 } else
186                         pr_warn("amiga_parse_bootinfo: too many AutoConfig devices\n");
187 #endif /* CONFIG_ZORRO */
188                 break;
189 
190         case BI_AMIGA_SERPER:
191                 /* serial port period: ignored here */
192                 break;
193 
194         default:
195                 unknown = 1;
196         }
197         return unknown;
198 }
199 
200     /*
201      *  Identify builtin hardware
202      */
203 
204 static void __init amiga_identify(void)
205 {
206         /* Fill in some default values, if necessary */
207         if (amiga_eclock == 0)
208                 amiga_eclock = 709379;
209 
210         memset(&amiga_hw_present, 0, sizeof(amiga_hw_present));
211 
212         pr_info("Amiga hardware found: ");
213         if (amiga_model >= AMI_500 && amiga_model <= AMI_DRACO) {
214                 pr_cont("[%s] ", amiga_models[amiga_model-AMI_500]);
215                 strcat(amiga_model_name, amiga_models[amiga_model-AMI_500]);
216         }
217 
218         switch (amiga_model) {
219         case AMI_UNKNOWN:
220                 goto Generic;
221 
222         case AMI_600:
223         case AMI_1200:
224                 AMIGAHW_SET(A1200_IDE);
225                 AMIGAHW_SET(PCMCIA);
226         case AMI_500:
227         case AMI_500PLUS:
228         case AMI_1000:
229         case AMI_2000:
230         case AMI_2500:
231                 AMIGAHW_SET(A2000_CLK); /* Is this correct for all models? */
232                 goto Generic;
233 
234         case AMI_3000:
235         case AMI_3000T:
236                 AMIGAHW_SET(AMBER_FF);
237                 AMIGAHW_SET(MAGIC_REKICK);
238                 /* fall through */
239         case AMI_3000PLUS:
240                 AMIGAHW_SET(A3000_SCSI);
241                 AMIGAHW_SET(A3000_CLK);
242                 AMIGAHW_SET(ZORRO3);
243                 goto Generic;
244 
245         case AMI_4000T:
246                 AMIGAHW_SET(A4000_SCSI);
247                 /* fall through */
248         case AMI_4000:
249                 AMIGAHW_SET(A4000_IDE);
250                 AMIGAHW_SET(A3000_CLK);
251                 AMIGAHW_SET(ZORRO3);
252                 goto Generic;
253 
254         case AMI_CDTV:
255         case AMI_CD32:
256                 AMIGAHW_SET(CD_ROM);
257                 AMIGAHW_SET(A2000_CLK);             /* Is this correct? */
258                 goto Generic;
259 
260         Generic:
261                 AMIGAHW_SET(AMI_VIDEO);
262                 AMIGAHW_SET(AMI_BLITTER);
263                 AMIGAHW_SET(AMI_AUDIO);
264                 AMIGAHW_SET(AMI_FLOPPY);
265                 AMIGAHW_SET(AMI_KEYBOARD);
266                 AMIGAHW_SET(AMI_MOUSE);
267                 AMIGAHW_SET(AMI_SERIAL);
268                 AMIGAHW_SET(AMI_PARALLEL);
269                 AMIGAHW_SET(CHIP_RAM);
270                 AMIGAHW_SET(PAULA);
271 
272                 switch (amiga_chipset) {
273                 case CS_OCS:
274                 case CS_ECS:
275                 case CS_AGA:
276                         switch (amiga_custom.deniseid & 0xf) {
277                         case 0x0c:
278                                 AMIGAHW_SET(DENISE_HR);
279                                 break;
280                         case 0x08:
281                                 AMIGAHW_SET(LISA);
282                                 break;
283                         }
284                         break;
285                 default:
286                         AMIGAHW_SET(DENISE);
287                         break;
288                 }
289                 switch ((amiga_custom.vposr>>8) & 0x7f) {
290                 case 0x00:
291                         AMIGAHW_SET(AGNUS_PAL);
292                         break;
293                 case 0x10:
294                         AMIGAHW_SET(AGNUS_NTSC);
295                         break;
296                 case 0x20:
297                 case 0x21:
298                         AMIGAHW_SET(AGNUS_HR_PAL);
299                         break;
300                 case 0x30:
301                 case 0x31:
302                         AMIGAHW_SET(AGNUS_HR_NTSC);
303                         break;
304                 case 0x22:
305                 case 0x23:
306                         AMIGAHW_SET(ALICE_PAL);
307                         break;
308                 case 0x32:
309                 case 0x33:
310                         AMIGAHW_SET(ALICE_NTSC);
311                         break;
312                 }
313                 AMIGAHW_SET(ZORRO);
314                 break;
315 
316         case AMI_DRACO:
317                 panic("No support for Draco yet");
318 
319         default:
320                 panic("Unknown Amiga Model");
321         }
322 
323 #define AMIGAHW_ANNOUNCE(name, str)             \
324         if (AMIGAHW_PRESENT(name))              \
325                 pr_cont(str)
326 
327         AMIGAHW_ANNOUNCE(AMI_VIDEO, "VIDEO ");
328         AMIGAHW_ANNOUNCE(AMI_BLITTER, "BLITTER ");
329         AMIGAHW_ANNOUNCE(AMBER_FF, "AMBER_FF ");
330         AMIGAHW_ANNOUNCE(AMI_AUDIO, "AUDIO ");
331         AMIGAHW_ANNOUNCE(AMI_FLOPPY, "FLOPPY ");
332         AMIGAHW_ANNOUNCE(A3000_SCSI, "A3000_SCSI ");
333         AMIGAHW_ANNOUNCE(A4000_SCSI, "A4000_SCSI ");
334         AMIGAHW_ANNOUNCE(A1200_IDE, "A1200_IDE ");
335         AMIGAHW_ANNOUNCE(A4000_IDE, "A4000_IDE ");
336         AMIGAHW_ANNOUNCE(CD_ROM, "CD_ROM ");
337         AMIGAHW_ANNOUNCE(AMI_KEYBOARD, "KEYBOARD ");
338         AMIGAHW_ANNOUNCE(AMI_MOUSE, "MOUSE ");
339         AMIGAHW_ANNOUNCE(AMI_SERIAL, "SERIAL ");
340         AMIGAHW_ANNOUNCE(AMI_PARALLEL, "PARALLEL ");
341         AMIGAHW_ANNOUNCE(A2000_CLK, "A2000_CLK ");
342         AMIGAHW_ANNOUNCE(A3000_CLK, "A3000_CLK ");
343         AMIGAHW_ANNOUNCE(CHIP_RAM, "CHIP_RAM ");
344         AMIGAHW_ANNOUNCE(PAULA, "PAULA ");
345         AMIGAHW_ANNOUNCE(DENISE, "DENISE ");
346         AMIGAHW_ANNOUNCE(DENISE_HR, "DENISE_HR ");
347         AMIGAHW_ANNOUNCE(LISA, "LISA ");
348         AMIGAHW_ANNOUNCE(AGNUS_PAL, "AGNUS_PAL ");
349         AMIGAHW_ANNOUNCE(AGNUS_NTSC, "AGNUS_NTSC ");
350         AMIGAHW_ANNOUNCE(AGNUS_HR_PAL, "AGNUS_HR_PAL ");
351         AMIGAHW_ANNOUNCE(AGNUS_HR_NTSC, "AGNUS_HR_NTSC ");
352         AMIGAHW_ANNOUNCE(ALICE_PAL, "ALICE_PAL ");
353         AMIGAHW_ANNOUNCE(ALICE_NTSC, "ALICE_NTSC ");
354         AMIGAHW_ANNOUNCE(MAGIC_REKICK, "MAGIC_REKICK ");
355         AMIGAHW_ANNOUNCE(PCMCIA, "PCMCIA ");
356         if (AMIGAHW_PRESENT(ZORRO))
357                 pr_cont("ZORRO%s ", AMIGAHW_PRESENT(ZORRO3) ? "3" : "");
358         pr_cont("\n");
359 
360 #undef AMIGAHW_ANNOUNCE
361 }
362 
363 
364 static unsigned long amiga_random_get_entropy(void)
365 {
366         /* VPOSR/VHPOSR provide at least 17 bits of data changing at 1.79 MHz */
367         return *(unsigned long *)&amiga_custom.vposr;
368 }
369 
370 
371     /*
372      *  Setup the Amiga configuration info
373      */
374 
375 void __init config_amiga(void)
376 {
377         int i;
378 
379         amiga_identify();
380 
381         /* Yuk, we don't have PCI memory */
382         iomem_resource.name = "Memory";
383         for (i = 0; i < 4; i++)
384                 request_resource(&iomem_resource, &((struct resource *)&mb_resources)[i]);
385 
386         mach_sched_init      = amiga_sched_init;
387         mach_init_IRQ        = amiga_init_IRQ;
388         mach_get_model       = amiga_get_model;
389         mach_get_hardware_list = amiga_get_hardware_list;
390         arch_gettimeoffset   = amiga_gettimeoffset;
391 
392         /*
393          * default MAX_DMA=0xffffffff on all machines. If we don't do so, the SCSI
394          * code will not be able to allocate any mem for transfers, unless we are
395          * dealing with a Z2 mem only system.                  /Jes
396          */
397         mach_max_dma_address = 0xffffffff;
398 
399         mach_reset           = amiga_reset;
400 #if defined(CONFIG_INPUT_M68K_BEEP) || defined(CONFIG_INPUT_M68K_BEEP_MODULE)
401         mach_beep            = amiga_mksound;
402 #endif
403 
404 #ifdef CONFIG_HEARTBEAT
405         mach_heartbeat = amiga_heartbeat;
406 #endif
407 
408         mach_random_get_entropy = amiga_random_get_entropy;
409 
410         /* Fill in the clock value (based on the 700 kHz E-Clock) */
411         amiga_colorclock = 5*amiga_eclock;      /* 3.5 MHz */
412 
413         /* clear all DMA bits */
414         amiga_custom.dmacon = DMAF_ALL;
415         /* ensure that the DMA master bit is set */
416         amiga_custom.dmacon = DMAF_SETCLR | DMAF_MASTER;
417 
418         /* don't use Z2 RAM as system memory on Z3 capable machines */
419         if (AMIGAHW_PRESENT(ZORRO3)) {
420                 int i, j;
421                 u32 disabled_z2mem = 0;
422 
423                 for (i = 0; i < m68k_num_memory; i++) {
424                         if (m68k_memory[i].addr < 16*1024*1024) {
425                                 if (i == 0) {
426                                         /* don't cut off the branch we're sitting on */
427                                         pr_warn("Warning: kernel runs in Zorro II memory\n");
428                                         continue;
429                                 }
430                                 disabled_z2mem += m68k_memory[i].size;
431                                 m68k_num_memory--;
432                                 for (j = i; j < m68k_num_memory; j++)
433                                         m68k_memory[j] = m68k_memory[j+1];
434                                 i--;
435                         }
436                 }
437                 if (disabled_z2mem)
438                         pr_info("%dK of Zorro II memory will not be used as system memory\n",
439                                 disabled_z2mem>>10);
440         }
441 
442         /* request all RAM */
443         for (i = 0; i < m68k_num_memory; i++) {
444                 ram_resource[i].name =
445                         (m68k_memory[i].addr >= 0x01000000) ? "32-bit Fast RAM" :
446                         (m68k_memory[i].addr < 0x00c00000) ? "16-bit Fast RAM" :
447                         "16-bit Slow RAM";
448                 ram_resource[i].start = m68k_memory[i].addr;
449                 ram_resource[i].end = m68k_memory[i].addr+m68k_memory[i].size-1;
450                 request_resource(&iomem_resource, &ram_resource[i]);
451         }
452 
453         /* initialize chipram allocator */
454         amiga_chip_init();
455 
456         /* our beloved beeper */
457         if (AMIGAHW_PRESENT(AMI_AUDIO))
458                 amiga_init_sound();
459 
460         /*
461          * if it is an A3000, set the magic bit that forces
462          * a hard rekick
463          */
464         if (AMIGAHW_PRESENT(MAGIC_REKICK))
465                 *(unsigned char *)ZTWO_VADDR(0xde0002) |= 0x80;
466 }
467 
468 static unsigned short jiffy_ticks;
469 
470 static void __init amiga_sched_init(irq_handler_t timer_routine)
471 {
472         static struct resource sched_res = {
473                 .name = "timer", .start = 0x00bfd400, .end = 0x00bfd5ff,
474         };
475         jiffy_ticks = DIV_ROUND_CLOSEST(amiga_eclock, HZ);
476 
477         if (request_resource(&mb_resources._ciab, &sched_res))
478                 pr_warn("Cannot allocate ciab.ta{lo,hi}\n");
479         ciab.cra &= 0xC0;   /* turn off timer A, continuous mode, from Eclk */
480         ciab.talo = jiffy_ticks % 256;
481         ciab.tahi = jiffy_ticks / 256;
482 
483         /* install interrupt service routine for CIAB Timer A
484          *
485          * Please don't change this to use ciaa, as it interferes with the
486          * SCSI code. We'll have to take a look at this later
487          */
488         if (request_irq(IRQ_AMIGA_CIAB_TA, timer_routine, 0, "timer", NULL))
489                 pr_err("Couldn't register timer interrupt\n");
490         /* start timer */
491         ciab.cra |= 0x11;
492 }
493 
494 #define TICK_SIZE 10000
495 
496 /* This is always executed with interrupts disabled.  */
497 static u32 amiga_gettimeoffset(void)
498 {
499         unsigned short hi, lo, hi2;
500         u32 ticks, offset = 0;
501 
502         /* read CIA B timer A current value */
503         hi  = ciab.tahi;
504         lo  = ciab.talo;
505         hi2 = ciab.tahi;
506 
507         if (hi != hi2) {
508                 lo = ciab.talo;
509                 hi = hi2;
510         }
511 
512         ticks = hi << 8 | lo;
513 
514         if (ticks > jiffy_ticks / 2)
515                 /* check for pending interrupt */
516                 if (cia_set_irq(&ciab_base, 0) & CIA_ICR_TA)
517                         offset = 10000;
518 
519         ticks = jiffy_ticks - ticks;
520         ticks = (10000 * ticks) / jiffy_ticks;
521 
522         return (ticks + offset) * 1000;
523 }
524 
525 static void amiga_reset(void)  __noreturn;
526 
527 static void amiga_reset(void)
528 {
529         unsigned long jmp_addr040 = virt_to_phys(&&jmp_addr_label040);
530         unsigned long jmp_addr = virt_to_phys(&&jmp_addr_label);
531 
532         local_irq_disable();
533         if (CPU_IS_040_OR_060)
534                 /* Setup transparent translation registers for mapping
535                  * of 16 MB kernel segment before disabling translation
536                  */
537                 asm volatile ("\n"
538                         "       move.l  %0,%%d0\n"
539                         "       and.l   #0xff000000,%%d0\n"
540                         "       or.w    #0xe020,%%d0\n"   /* map 16 MB, enable, cacheable */
541                         "       .chip   68040\n"
542                         "       movec   %%d0,%%itt0\n"
543                         "       movec   %%d0,%%dtt0\n"
544                         "       .chip   68k\n"
545                         "       jmp     %0@\n"
546                         : /* no outputs */
547                         : "a" (jmp_addr040)
548                         : "d0");
549         else
550                 /* for 680[23]0, just disable translation and jump to the physical
551                  * address of the label
552                  */
553                 asm volatile ("\n"
554                         "       pmove   %%tc,%@\n"
555                         "       bclr    #7,%@\n"
556                         "       pmove   %@,%%tc\n"
557                         "       jmp     %0@\n"
558                         : /* no outputs */
559                         : "a" (jmp_addr));
560 jmp_addr_label040:
561         /* disable translation on '040 now */
562         asm volatile ("\n"
563                 "       moveq   #0,%%d0\n"
564                 "       .chip   68040\n"
565                 "       movec   %%d0,%%tc\n"    /* disable MMU */
566                 "       .chip   68k\n"
567                 : /* no outputs */
568                 : /* no inputs */
569                 : "d0");
570 
571         jmp_addr_label:
572         /* pickup reset address from AmigaOS ROM, reset devices and jump
573          * to reset address
574          */
575         asm volatile ("\n"
576                 "       move.w  #0x2700,%sr\n"
577                 "       lea     0x01000000,%a0\n"
578                 "       sub.l   %a0@(-0x14),%a0\n"
579                 "       move.l  %a0@(4),%a0\n"
580                 "       subq.l  #2,%a0\n"
581                 "       jra     1f\n"
582                 /* align on a longword boundary */
583                 "       " __ALIGN_STR "\n"
584                 "1:\n"
585                 "       reset\n"
586                 "       jmp   %a0@");
587 
588         for (;;)
589                 ;
590 }
591 
592 
593     /*
594      *  Debugging
595      */
596 
597 #define SAVEKMSG_MAXMEM         128*1024
598 
599 #define SAVEKMSG_MAGIC1         0x53415645      /* 'SAVE' */
600 #define SAVEKMSG_MAGIC2         0x4B4D5347      /* 'KMSG' */
601 
602 struct savekmsg {
603         unsigned long magic1;           /* SAVEKMSG_MAGIC1 */
604         unsigned long magic2;           /* SAVEKMSG_MAGIC2 */
605         unsigned long magicptr;         /* address of magic1 */
606         unsigned long size;
607         char data[0];
608 };
609 
610 static struct savekmsg *savekmsg;
611 
612 static void amiga_mem_console_write(struct console *co, const char *s,
613                                     unsigned int count)
614 {
615         if (savekmsg->size + count <= SAVEKMSG_MAXMEM-sizeof(struct savekmsg)) {
616                 memcpy(savekmsg->data + savekmsg->size, s, count);
617                 savekmsg->size += count;
618         }
619 }
620 
621 static int __init amiga_savekmsg_setup(char *arg)
622 {
623         bool registered;
624 
625         if (!MACH_IS_AMIGA || strcmp(arg, "mem"))
626                 return 0;
627 
628         if (amiga_chip_size < SAVEKMSG_MAXMEM) {
629                 pr_err("Not enough chipram for debugging\n");
630                 return -ENOMEM;
631         }
632 
633         /* Just steal the block, the chipram allocator isn't functional yet */
634         amiga_chip_size -= SAVEKMSG_MAXMEM;
635         savekmsg = ZTWO_VADDR(CHIP_PHYSADDR + amiga_chip_size);
636         savekmsg->magic1 = SAVEKMSG_MAGIC1;
637         savekmsg->magic2 = SAVEKMSG_MAGIC2;
638         savekmsg->magicptr = ZTWO_PADDR(savekmsg);
639         savekmsg->size = 0;
640 
641         registered = !!amiga_console_driver.write;
642         amiga_console_driver.write = amiga_mem_console_write;
643         if (!registered)
644                 register_console(&amiga_console_driver);
645         return 0;
646 }
647 
648 early_param("debug", amiga_savekmsg_setup);
649 
650 static void amiga_serial_putc(char c)
651 {
652         amiga_custom.serdat = (unsigned char)c | 0x100;
653         while (!(amiga_custom.serdatr & 0x2000))
654                 ;
655 }
656 
657 static void amiga_serial_console_write(struct console *co, const char *s,
658                                        unsigned int count)
659 {
660         while (count--) {
661                 if (*s == '\n')
662                         amiga_serial_putc('\r');
663                 amiga_serial_putc(*s++);
664         }
665 }
666 
667 #if 0
668 void amiga_serial_puts(const char *s)
669 {
670         amiga_serial_console_write(NULL, s, strlen(s));
671 }
672 
673 int amiga_serial_console_wait_key(struct console *co)
674 {
675         int ch;
676 
677         while (!(amiga_custom.intreqr & IF_RBF))
678                 barrier();
679         ch = amiga_custom.serdatr & 0xff;
680         /* clear the interrupt, so that another character can be read */
681         amiga_custom.intreq = IF_RBF;
682         return ch;
683 }
684 
685 void amiga_serial_gets(struct console *co, char *s, int len)
686 {
687         int ch, cnt = 0;
688 
689         while (1) {
690                 ch = amiga_serial_console_wait_key(co);
691 
692                 /* Check for backspace. */
693                 if (ch == 8 || ch == 127) {
694                         if (cnt == 0) {
695                                 amiga_serial_putc('\007');
696                                 continue;
697                         }
698                         cnt--;
699                         amiga_serial_puts("\010 \010");
700                         continue;
701                 }
702 
703                 /* Check for enter. */
704                 if (ch == 10 || ch == 13)
705                         break;
706 
707                 /* See if line is too long. */
708                 if (cnt >= len + 1) {
709                         amiga_serial_putc(7);
710                         cnt--;
711                         continue;
712                 }
713 
714                 /* Store and echo character. */
715                 s[cnt++] = ch;
716                 amiga_serial_putc(ch);
717         }
718         /* Print enter. */
719         amiga_serial_puts("\r\n");
720         s[cnt] = 0;
721 }
722 #endif
723 
724 static int __init amiga_debug_setup(char *arg)
725 {
726         bool registered;
727 
728         if (!MACH_IS_AMIGA || strcmp(arg, "ser"))
729                 return 0;
730 
731         /* no initialization required (?) */
732         registered = !!amiga_console_driver.write;
733         amiga_console_driver.write = amiga_serial_console_write;
734         if (!registered)
735                 register_console(&amiga_console_driver);
736         return 0;
737 }
738 
739 early_param("debug", amiga_debug_setup);
740 
741 #ifdef CONFIG_HEARTBEAT
742 static void amiga_heartbeat(int on)
743 {
744         if (on)
745                 ciaa.pra &= ~2;
746         else
747                 ciaa.pra |= 2;
748 }
749 #endif
750 
751     /*
752      *  Amiga specific parts of /proc
753      */
754 
755 static void amiga_get_model(char *model)
756 {
757         strcpy(model, amiga_model_name);
758 }
759 
760 
761 static void amiga_get_hardware_list(struct seq_file *m)
762 {
763         if (AMIGAHW_PRESENT(CHIP_RAM))
764                 seq_printf(m, "Chip RAM:\t%ldK\n", amiga_chip_size>>10);
765         seq_printf(m, "PS Freq:\t%dHz\nEClock Freq:\t%ldHz\n",
766                         amiga_psfreq, amiga_eclock);
767         if (AMIGAHW_PRESENT(AMI_VIDEO)) {
768                 char *type;
769                 switch (amiga_chipset) {
770                 case CS_OCS:
771                         type = "OCS";
772                         break;
773                 case CS_ECS:
774                         type = "ECS";
775                         break;
776                 case CS_AGA:
777                         type = "AGA";
778                         break;
779                 default:
780                         type = "Old or Unknown";
781                         break;
782                 }
783                 seq_printf(m, "Graphics:\t%s\n", type);
784         }
785 
786 #define AMIGAHW_ANNOUNCE(name, str)                     \
787         if (AMIGAHW_PRESENT(name))                      \
788                 seq_printf (m, "\t%s\n", str)
789 
790         seq_printf (m, "Detected hardware:\n");
791 
792         AMIGAHW_ANNOUNCE(AMI_VIDEO, "Amiga Video");
793         AMIGAHW_ANNOUNCE(AMI_BLITTER, "Blitter");
794         AMIGAHW_ANNOUNCE(AMBER_FF, "Amber Flicker Fixer");
795         AMIGAHW_ANNOUNCE(AMI_AUDIO, "Amiga Audio");
796         AMIGAHW_ANNOUNCE(AMI_FLOPPY, "Floppy Controller");
797         AMIGAHW_ANNOUNCE(A3000_SCSI, "SCSI Controller WD33C93 (A3000 style)");
798         AMIGAHW_ANNOUNCE(A4000_SCSI, "SCSI Controller NCR53C710 (A4000T style)");
799         AMIGAHW_ANNOUNCE(A1200_IDE, "IDE Interface (A1200 style)");
800         AMIGAHW_ANNOUNCE(A4000_IDE, "IDE Interface (A4000 style)");
801         AMIGAHW_ANNOUNCE(CD_ROM, "Internal CD ROM drive");
802         AMIGAHW_ANNOUNCE(AMI_KEYBOARD, "Keyboard");
803         AMIGAHW_ANNOUNCE(AMI_MOUSE, "Mouse Port");
804         AMIGAHW_ANNOUNCE(AMI_SERIAL, "Serial Port");
805         AMIGAHW_ANNOUNCE(AMI_PARALLEL, "Parallel Port");
806         AMIGAHW_ANNOUNCE(A2000_CLK, "Hardware Clock (A2000 style)");
807         AMIGAHW_ANNOUNCE(A3000_CLK, "Hardware Clock (A3000 style)");
808         AMIGAHW_ANNOUNCE(CHIP_RAM, "Chip RAM");
809         AMIGAHW_ANNOUNCE(PAULA, "Paula 8364");
810         AMIGAHW_ANNOUNCE(DENISE, "Denise 8362");
811         AMIGAHW_ANNOUNCE(DENISE_HR, "Denise 8373");
812         AMIGAHW_ANNOUNCE(LISA, "Lisa 8375");
813         AMIGAHW_ANNOUNCE(AGNUS_PAL, "Normal/Fat PAL Agnus 8367/8371");
814         AMIGAHW_ANNOUNCE(AGNUS_NTSC, "Normal/Fat NTSC Agnus 8361/8370");
815         AMIGAHW_ANNOUNCE(AGNUS_HR_PAL, "Fat Hires PAL Agnus 8372");
816         AMIGAHW_ANNOUNCE(AGNUS_HR_NTSC, "Fat Hires NTSC Agnus 8372");
817         AMIGAHW_ANNOUNCE(ALICE_PAL, "PAL Alice 8374");
818         AMIGAHW_ANNOUNCE(ALICE_NTSC, "NTSC Alice 8374");
819         AMIGAHW_ANNOUNCE(MAGIC_REKICK, "Magic Hard Rekick");
820         AMIGAHW_ANNOUNCE(PCMCIA, "PCMCIA Slot");
821 #ifdef CONFIG_ZORRO
822         if (AMIGAHW_PRESENT(ZORRO))
823                 seq_printf(m, "\tZorro II%s AutoConfig: %d Expansion "
824                                 "Device%s\n",
825                                 AMIGAHW_PRESENT(ZORRO3) ? "I" : "",
826                                 zorro_num_autocon, zorro_num_autocon == 1 ? "" : "s");
827 #endif /* CONFIG_ZORRO */
828 
829 #undef AMIGAHW_ANNOUNCE
830 }
831 
832 /*
833  * The Amiga keyboard driver needs key_maps, but we cannot export it in
834  * drivers/char/defkeymap.c, as it is autogenerated
835  */
836 #ifdef CONFIG_HW_CONSOLE
837 EXPORT_SYMBOL_GPL(key_maps);
838 #endif
839 

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