root/arch/m68k/amiga/config.c

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DEFINITIONS

This source file includes following definitions.
  1. amiga_parse_bootinfo
  2. amiga_identify
  3. amiga_random_get_entropy
  4. config_amiga
  5. ciab_timer_handler
  6. amiga_sched_init
  7. amiga_read_clk
  8. amiga_reset
  9. amiga_mem_console_write
  10. amiga_savekmsg_setup
  11. amiga_serial_putc
  12. amiga_serial_console_write
  13. amiga_serial_puts
  14. amiga_serial_console_wait_key
  15. amiga_serial_gets
  16. amiga_debug_setup
  17. amiga_heartbeat
  18. amiga_get_model
  19. amiga_get_hardware_list

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

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