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/setup.h>
  32#include <asm/system.h>
  33#include <asm/pgtable.h>
  34#include <asm/amigahw.h>
  35#include <asm/amigaints.h>
  36#include <asm/irq.h>
  37#include <asm/rtc.h>
  38#include <asm/machdep.h>
  39#include <asm/io.h>
  40
  41static unsigned long amiga_model;
  42
  43unsigned long amiga_eclock;
  44EXPORT_SYMBOL(amiga_eclock);
  45
  46unsigned long amiga_colorclock;
  47EXPORT_SYMBOL(amiga_colorclock);
  48
  49unsigned long amiga_chipset;
  50EXPORT_SYMBOL(amiga_chipset);
  51
  52unsigned char amiga_vblank;
  53EXPORT_SYMBOL(amiga_vblank);
  54
  55static unsigned char amiga_psfreq;
  56
  57struct amiga_hw_present amiga_hw_present;
  58EXPORT_SYMBOL(amiga_hw_present);
  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 = {
  76        [AMI_500-AMI_500]       = s_a500,
  77        [AMI_500PLUS-AMI_500]   = s_a500p,
  78        [AMI_600-AMI_500]       = s_a600,
  79        [AMI_1000-AMI_500]      = s_a1000,
  80        [AMI_1200-AMI_500]      = s_a1200,
  81        [AMI_2000-AMI_500]      = s_a2000,
  82        [AMI_2500-AMI_500]      = s_a2500,
  83        [AMI_3000-AMI_500]      = s_a3000,
  84        [AMI_3000T-AMI_500]     = s_a3000t,
  85        [AMI_3000PLUS-AMI_500]  = s_a3000p,
  86        [AMI_4000-AMI_500]      = s_a4000,
  87        [AMI_4000T-AMI_500]     = s_a4000t,
  88        [AMI_CDTV-AMI_500]      = s_cdtv,
  89        [AMI_CD32-AMI_500]      = s_cd32,
  90        [AMI_DRACO-AMI_500]     = s_draco,
  91};
  92
  93static char amiga_model_name[13] = "Amiga ";
  94
  95static void amiga_sched_init(irq_handler_t handler);
  96static void amiga_get_model(char *model);
  97static void amiga_get_hardware_list(struct seq_file *m);
  98/* amiga specific timer functions */
  99static unsigned long amiga_gettimeoffset(void);
 100static int a3000_hwclk(int, struct rtc_time *);
 101static int a2000_hwclk(int, struct rtc_time *);
 102static int amiga_set_clock_mmss(unsigned long);
 103static unsigned int amiga_get_ss(void);
 104extern void amiga_mksound(unsigned int count, unsigned int ticks);
 105static void amiga_reset(void);
 106extern void amiga_init_sound(void);
 107static void amiga_mem_console_write(struct console *co, const char *b,
 108                                    unsigned int count);
 109#ifdef CONFIG_HEARTBEAT
 110static void amiga_heartbeat(int on);
 111#endif
 112
 113static struct console amiga_console_driver = {
 114        .name   = "debug",
 115        .flags  = CON_PRINTBUFFER,
 116        .index  = -1,
 117};
 118
 119
 120    /*
 121     *  Motherboard Resources present in all Amiga models
 122     */
 123
 124static struct {
 125        struct resource _ciab, _ciaa, _custom, _kickstart;
 126} mb_resources = {
 127        ._ciab = {
 128                .name = "CIA B", .start = 0x00bfd000, .end = 0x00bfdfff
 129        },
 130        ._ciaa = {
 131                .name = "CIA A", .start = 0x00bfe000, .end = 0x00bfefff
 132        },
 133        ._custom = {
 134                .name = "Custom I/O", .start = 0x00dff000, .end = 0x00dfffff
 135        },
 136        ._kickstart = {
 137                .name = "Kickstart ROM", .start = 0x00f80000, .end = 0x00ffffff
 138        }
 139};
 140
 141static struct resource rtc_resource = {
 142        .start = 0x00dc0000, .end = 0x00dcffff
 143};
 144
 145static struct resource ram_resource[NUM_MEMINFO];
 146
 147
 148    /*
 149     *  Parse an Amiga-specific record in the bootinfo
 150     */
 151
 152int amiga_parse_bootinfo(const struct bi_record *record)
 153{
 154        int unknown = 0;
 155        const unsigned long *data = record->data;
 156
 157        switch (record->tag) {
 158        case BI_AMIGA_MODEL:
 159                amiga_model = *data;
 160                break;
 161
 162        case BI_AMIGA_ECLOCK:
 163                amiga_eclock = *data;
 164                break;
 165
 166        case BI_AMIGA_CHIPSET:
 167                amiga_chipset = *data;
 168                break;
 169
 170        case BI_AMIGA_CHIP_SIZE:
 171                amiga_chip_size = *(const int *)data;
 172                break;
 173
 174        case BI_AMIGA_VBLANK:
 175                amiga_vblank = *(const unsigned char *)data;
 176                break;
 177
 178        case BI_AMIGA_PSFREQ:
 179                amiga_psfreq = *(const unsigned char *)data;
 180                break;
 181
 182        case BI_AMIGA_AUTOCON:
 183#ifdef CONFIG_ZORRO
 184                if (zorro_num_autocon < ZORRO_NUM_AUTO) {
 185                        const struct ConfigDev *cd = (struct ConfigDev *)data;
 186                        struct zorro_dev *dev = &zorro_autocon[zorro_num_autocon++];
 187                        dev->rom = cd->cd_Rom;
 188                        dev->slotaddr = cd->cd_SlotAddr;
 189                        dev->slotsize = cd->cd_SlotSize;
 190                        dev->resource.start = (unsigned long)cd->cd_BoardAddr;
 191                        dev->resource.end = dev->resource.start + cd->cd_BoardSize - 1;
 192                } else
 193                        printk("amiga_parse_bootinfo: too many AutoConfig devices\n");
 194#endif /* CONFIG_ZORRO */
 195                break;
 196
 197        case BI_AMIGA_SERPER:
 198                /* serial port period: ignored here */
 199                break;
 200
 201        default:
 202                unknown = 1;
 203        }
 204        return unknown;
 205}
 206
 207    /*
 208     *  Identify builtin hardware
 209     */
 210
 211static void __init amiga_identify(void)
 212{
 213        /* Fill in some default values, if necessary */
 214        if (amiga_eclock == 0)
 215                amiga_eclock = 709379;
 216
 217        memset(&amiga_hw_present, 0, sizeof(amiga_hw_present));
 218
 219        printk("Amiga hardware found: ");
 220        if (amiga_model >= AMI_500 && amiga_model <= AMI_DRACO) {
 221                printk("[%s] ", amiga_models[amiga_model-AMI_500]);
 222                strcat(amiga_model_name, amiga_models[amiga_model-AMI_500]);
 223        }
 224
 225        switch (amiga_model) {
 226        case AMI_UNKNOWN:
 227                goto Generic;
 228
 229        case AMI_600:
 230        case AMI_1200:
 231                AMIGAHW_SET(A1200_IDE);
 232                AMIGAHW_SET(PCMCIA);
 233        case AMI_500:
 234        case AMI_500PLUS:
 235        case AMI_1000:
 236        case AMI_2000:
 237        case AMI_2500:
 238                AMIGAHW_SET(A2000_CLK); /* Is this correct for all models? */
 239                goto Generic;
 240
 241        case AMI_3000:
 242        case AMI_3000T:
 243                AMIGAHW_SET(AMBER_FF);
 244                AMIGAHW_SET(MAGIC_REKICK);
 245                /* fall through */
 246        case AMI_3000PLUS:
 247                AMIGAHW_SET(A3000_SCSI);
 248                AMIGAHW_SET(A3000_CLK);
 249                AMIGAHW_SET(ZORRO3);
 250                goto Generic;
 251
 252        case AMI_4000T:
 253                AMIGAHW_SET(A4000_SCSI);
 254                /* fall through */
 255        case AMI_4000:
 256                AMIGAHW_SET(A4000_IDE);
 257                AMIGAHW_SET(A3000_CLK);
 258                AMIGAHW_SET(ZORRO3);
 259                goto Generic;
 260
 261        case AMI_CDTV:
 262        case AMI_CD32:
 263                AMIGAHW_SET(CD_ROM);
 264                AMIGAHW_SET(A2000_CLK);             /* Is this correct? */
 265                goto Generic;
 266
 267        Generic:
 268                AMIGAHW_SET(AMI_VIDEO);
 269                AMIGAHW_SET(AMI_BLITTER);
 270                AMIGAHW_SET(AMI_AUDIO);
 271                AMIGAHW_SET(AMI_FLOPPY);
 272                AMIGAHW_SET(AMI_KEYBOARD);
 273                AMIGAHW_SET(AMI_MOUSE);
 274                AMIGAHW_SET(AMI_SERIAL);
 275                AMIGAHW_SET(AMI_PARALLEL);
 276                AMIGAHW_SET(CHIP_RAM);
 277                AMIGAHW_SET(PAULA);
 278
 279                switch (amiga_chipset) {
 280                case CS_OCS:
 281                case CS_ECS:
 282                case CS_AGA:
 283                        switch (amiga_custom.deniseid & 0xf) {
 284                        case 0x0c:
 285                                AMIGAHW_SET(DENISE_HR);
 286                                break;
 287                        case 0x08:
 288                                AMIGAHW_SET(LISA);
 289                                break;
 290                        }
 291                        break;
 292                default:
 293                        AMIGAHW_SET(DENISE);
 294                        break;
 295                }
 296                switch ((amiga_custom.vposr>>8) & 0x7f) {
 297                case 0x00:
 298                        AMIGAHW_SET(AGNUS_PAL);
 299                        break;
 300                case 0x10:
 301                        AMIGAHW_SET(AGNUS_NTSC);
 302                        break;
 303                case 0x20:
 304                case 0x21:
 305                        AMIGAHW_SET(AGNUS_HR_PAL);
 306                        break;
 307                case 0x30:
 308                case 0x31:
 309                        AMIGAHW_SET(AGNUS_HR_NTSC);
 310                        break;
 311                case 0x22:
 312                case 0x23:
 313                        AMIGAHW_SET(ALICE_PAL);
 314                        break;
 315                case 0x32:
 316                case 0x33:
 317                        AMIGAHW_SET(ALICE_NTSC);
 318                        break;
 319                }
 320                AMIGAHW_SET(ZORRO);
 321                break;
 322
 323        case AMI_DRACO:
 324                panic("No support for Draco yet");
 325
 326        default:
 327                panic("Unknown Amiga Model");
 328        }
 329
 330#define AMIGAHW_ANNOUNCE(name, str)             \
 331        if (AMIGAHW_PRESENT(name))              \
 332                printk(str)
 333
 334        AMIGAHW_ANNOUNCE(AMI_VIDEO, "VIDEO ");
 335        AMIGAHW_ANNOUNCE(AMI_BLITTER, "BLITTER ");
 336        AMIGAHW_ANNOUNCE(AMBER_FF, "AMBER_FF ");
 337        AMIGAHW_ANNOUNCE(AMI_AUDIO, "AUDIO ");
 338        AMIGAHW_ANNOUNCE(AMI_FLOPPY, "FLOPPY ");
 339        AMIGAHW_ANNOUNCE(A3000_SCSI, "A3000_SCSI ");
 340        AMIGAHW_ANNOUNCE(A4000_SCSI, "A4000_SCSI ");
 341        AMIGAHW_ANNOUNCE(A1200_IDE, "A1200_IDE ");
 342        AMIGAHW_ANNOUNCE(A4000_IDE, "A4000_IDE ");
 343        AMIGAHW_ANNOUNCE(CD_ROM, "CD_ROM ");
 344        AMIGAHW_ANNOUNCE(AMI_KEYBOARD, "KEYBOARD ");
 345        AMIGAHW_ANNOUNCE(AMI_MOUSE, "MOUSE ");
 346        AMIGAHW_ANNOUNCE(AMI_SERIAL, "SERIAL ");
 347        AMIGAHW_ANNOUNCE(AMI_PARALLEL, "PARALLEL ");
 348        AMIGAHW_ANNOUNCE(A2000_CLK, "A2000_CLK ");
 349        AMIGAHW_ANNOUNCE(A3000_CLK, "A3000_CLK ");
 350        AMIGAHW_ANNOUNCE(CHIP_RAM, "CHIP_RAM ");
 351        AMIGAHW_ANNOUNCE(PAULA, "PAULA ");
 352        AMIGAHW_ANNOUNCE(DENISE, "DENISE ");
 353        AMIGAHW_ANNOUNCE(DENISE_HR, "DENISE_HR ");
 354        AMIGAHW_ANNOUNCE(LISA, "LISA ");
 355        AMIGAHW_ANNOUNCE(AGNUS_PAL, "AGNUS_PAL ");
 356        AMIGAHW_ANNOUNCE(AGNUS_NTSC, "AGNUS_NTSC ");
 357        AMIGAHW_ANNOUNCE(AGNUS_HR_PAL, "AGNUS_HR_PAL ");
 358        AMIGAHW_ANNOUNCE(AGNUS_HR_NTSC, "AGNUS_HR_NTSC ");
 359        AMIGAHW_ANNOUNCE(ALICE_PAL, "ALICE_PAL ");
 360        AMIGAHW_ANNOUNCE(ALICE_NTSC, "ALICE_NTSC ");
 361        AMIGAHW_ANNOUNCE(MAGIC_REKICK, "MAGIC_REKICK ");
 362        AMIGAHW_ANNOUNCE(PCMCIA, "PCMCIA ");
 363        if (AMIGAHW_PRESENT(ZORRO))
 364                printk("ZORRO%s ", AMIGAHW_PRESENT(ZORRO3) ? "3" : "");
 365        printk("\n");
 366
 367#undef AMIGAHW_ANNOUNCE
 368}
 369
 370    /*
 371     *  Setup the Amiga configuration info
 372     */
 373
 374void __init config_amiga(void)
 375{
 376        int i;
 377
 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;
 389        mach_gettimeoffset   = amiga_gettimeoffset;
 390        if (AMIGAHW_PRESENT(A3000_CLK)) {
 391                mach_hwclk         = a3000_hwclk;
 392                rtc_resource.name = "A3000 RTC";
 393                request_resource(&iomem_resource, &rtc_resource);
 394        } else /* if (AMIGAHW_PRESENT(A2000_CLK)) */ {
 395                mach_hwclk         = a2000_hwclk;
 396                rtc_resource.name = "A2000 RTC";
 397                request_resource(&iomem_resource, &rtc_resource);
 398        }
 399
 400        /*
 401         * default MAX_DMA=0xffffffff on all machines. If we don't do so, the SCSI
 402         * code will not be able to allocate any mem for transfers, unless we are
 403         * dealing with a Z2 mem only system.                  /Jes
 404         */
 405        mach_max_dma_address = 0xffffffff;
 406
 407        mach_set_clock_mmss  = amiga_set_clock_mmss;
 408        mach_get_ss          = amiga_get_ss;
 409        mach_reset           = amiga_reset;
 410#if defined(CONFIG_INPUT_M68K_BEEP) || defined(CONFIG_INPUT_M68K_BEEP_MODULE)
 411        mach_beep            = amiga_mksound;
 412#endif
 413
 414#ifdef CONFIG_HEARTBEAT
 415        mach_heartbeat = amiga_heartbeat;
 416#endif
 417
 418        /* Fill in the clock value (based on the 700 kHz E-Clock) */
 419        amiga_colorclock = 5*amiga_eclock;      /* 3.5 MHz */
 420
 421        /* clear all DMA bits */
 422        amiga_custom.dmacon = DMAF_ALL;
 423        /* ensure that the DMA master bit is set */
 424        amiga_custom.dmacon = DMAF_SETCLR | DMAF_MASTER;
 425
 426        /* don't use Z2 RAM as system memory on Z3 capable machines */
 427        if (AMIGAHW_PRESENT(ZORRO3)) {
 428                int i, j;
 429                u32 disabled_z2mem = 0;
 430
 431                for (i = 0; i < m68k_num_memory; i++) {
 432                        if (m68k_memory[i].addr < 16*1024*1024) {
 433                                if (i == 0) {
 434                                        /* don't cut off the branch we're sitting on */
 435                                        printk("Warning: kernel runs in Zorro II memory\n");
 436                                        continue;
 437                                }
 438                                disabled_z2mem += m68k_memory[i].size;
 439                                m68k_num_memory--;
 440                                for (j = i; j < m68k_num_memory; j++)
 441                                        m68k_memory[j] = m68k_memory[j+1];
 442                                i--;
 443                        }
 444                }
 445                if (disabled_z2mem)
 446                printk("%dK of Zorro II memory will not be used as system memory\n",
 447                disabled_z2mem>>10);
 448        }
 449
 450        /* request all RAM */
 451        for (i = 0; i < m68k_num_memory; i++) {
 452                ram_resource[i].name =
 453                        (m68k_memory[i].addr >= 0x01000000) ? "32-bit Fast RAM" :
 454                        (m68k_memory[i].addr < 0x00c00000) ? "16-bit Fast RAM" :
 455                        "16-bit Slow RAM";
 456                ram_resource[i].start = m68k_memory[i].addr;
 457                ram_resource[i].end = m68k_memory[i].addr+m68k_memory[i].size-1;
 458                request_resource(&iomem_resource, &ram_resource[i]);
 459        }
 460
 461        /* initialize chipram allocator */
 462        amiga_chip_init();
 463
 464        /* our beloved beeper */
 465        if (AMIGAHW_PRESENT(AMI_AUDIO))
 466                amiga_init_sound();
 467
 468        /*
 469         * if it is an A3000, set the magic bit that forces
 470         * a hard rekick
 471         */
 472        if (AMIGAHW_PRESENT(MAGIC_REKICK))
 473                *(unsigned char *)ZTWO_VADDR(0xde0002) |= 0x80;
 474}
 475
 476static unsigned short jiffy_ticks;
 477
 478static void __init amiga_sched_init(irq_handler_t timer_routine)
 479{
 480        static struct resource sched_res = {
 481                .name = "timer", .start = 0x00bfd400, .end = 0x00bfd5ff,
 482        };
 483        jiffy_ticks = (amiga_eclock+HZ/2)/HZ;
 484
 485        if (request_resource(&mb_resources._ciab, &sched_res))
 486                printk("Cannot allocate ciab.ta{lo,hi}\n");
 487        ciab.cra &= 0xC0;   /* turn off timer A, continuous mode, from Eclk */
 488        ciab.talo = jiffy_ticks % 256;
 489        ciab.tahi = jiffy_ticks / 256;
 490
 491        /* install interrupt service routine for CIAB Timer A
 492         *
 493         * Please don't change this to use ciaa, as it interferes with the
 494         * SCSI code. We'll have to take a look at this later
 495         */
 496        if (request_irq(IRQ_AMIGA_CIAB_TA, timer_routine, 0, "timer", NULL))
 497                pr_err("Couldn't register timer interrupt\n");
 498        /* start timer */
 499        ciab.cra |= 0x11;
 500}
 501
 502#define TICK_SIZE 10000
 503
 504/* This is always executed with interrupts disabled.  */
 505static unsigned long amiga_gettimeoffset(void)
 506{
 507        unsigned short hi, lo, hi2;
 508        unsigned long ticks, offset = 0;
 509
 510        /* read CIA B timer A current value */
 511        hi  = ciab.tahi;
 512        lo  = ciab.talo;
 513        hi2 = ciab.tahi;
 514
 515        if (hi != hi2) {
 516                lo = ciab.talo;
 517                hi = hi2;
 518        }
 519
 520        ticks = hi << 8 | lo;
 521
 522        if (ticks > jiffy_ticks / 2)
 523                /* check for pending interrupt */
 524                if (cia_set_irq(&ciab_base, 0) & CIA_ICR_TA)
 525                        offset = 10000;
 526
 527        ticks = jiffy_ticks - ticks;
 528        ticks = (10000 * ticks) / jiffy_ticks;
 529
 530        return ticks + offset;
 531}
 532
 533static int a3000_hwclk(int op, struct rtc_time *t)
 534{
 535        tod_3000.cntrl1 = TOD3000_CNTRL1_HOLD;
 536
 537        if (!op) { /* read */
 538                t->tm_sec  = tod_3000.second1 * 10 + tod_3000.second2;
 539                t->tm_min  = tod_3000.minute1 * 10 + tod_3000.minute2;
 540                t->tm_hour = tod_3000.hour1   * 10 + tod_3000.hour2;
 541                t->tm_mday = tod_3000.day1    * 10 + tod_3000.day2;
 542                t->tm_wday = tod_3000.weekday;
 543                t->tm_mon  = tod_3000.month1  * 10 + tod_3000.month2 - 1;
 544                t->tm_year = tod_3000.year1   * 10 + tod_3000.year2;
 545                if (t->tm_year <= 69)
 546                        t->tm_year += 100;
 547        } else {
 548                tod_3000.second1 = t->tm_sec / 10;
 549                tod_3000.second2 = t->tm_sec % 10;
 550                tod_3000.minute1 = t->tm_min / 10;
 551                tod_3000.minute2 = t->tm_min % 10;
 552                tod_3000.hour1   = t->tm_hour / 10;
 553                tod_3000.hour2   = t->tm_hour % 10;
 554                tod_3000.day1    = t->tm_mday / 10;
 555                tod_3000.day2    = t->tm_mday % 10;
 556                if (t->tm_wday != -1)
 557                        tod_3000.weekday = t->tm_wday;
 558                tod_3000.month1  = (t->tm_mon + 1) / 10;
 559                tod_3000.month2  = (t->tm_mon + 1) % 10;
 560                if (t->tm_year >= 100)
 561                        t->tm_year -= 100;
 562                tod_3000.year1   = t->tm_year / 10;
 563                tod_3000.year2   = t->tm_year % 10;
 564        }
 565
 566        tod_3000.cntrl1 = TOD3000_CNTRL1_FREE;
 567
 568        return 0;
 569}
 570
 571static int a2000_hwclk(int op, struct rtc_time *t)
 572{
 573        int cnt = 5;
 574
 575        tod_2000.cntrl1 = TOD2000_CNTRL1_HOLD;
 576
 577        while ((tod_2000.cntrl1 & TOD2000_CNTRL1_BUSY) && cnt) {
 578                tod_2000.cntrl1 &= ~TOD2000_CNTRL1_HOLD;
 579                udelay(70);
 580                tod_2000.cntrl1 |= TOD2000_CNTRL1_HOLD;
 581                --cnt;
 582        }
 583
 584        if (!cnt)
 585                printk(KERN_INFO "hwclk: timed out waiting for RTC (0x%x)\n",
 586                        tod_2000.cntrl1);
 587
 588        if (!op) { /* read */
 589                t->tm_sec  = tod_2000.second1     * 10 + tod_2000.second2;
 590                t->tm_min  = tod_2000.minute1     * 10 + tod_2000.minute2;
 591                t->tm_hour = (tod_2000.hour1 & 3) * 10 + tod_2000.hour2;
 592                t->tm_mday = tod_2000.day1        * 10 + tod_2000.day2;
 593                t->tm_wday = tod_2000.weekday;
 594                t->tm_mon  = tod_2000.month1      * 10 + tod_2000.month2 - 1;
 595                t->tm_year = tod_2000.year1       * 10 + tod_2000.year2;
 596                if (t->tm_year <= 69)
 597                        t->tm_year += 100;
 598
 599                if (!(tod_2000.cntrl3 & TOD2000_CNTRL3_24HMODE)) {
 600                        if (!(tod_2000.hour1 & TOD2000_HOUR1_PM) && t->tm_hour == 12)
 601                                t->tm_hour = 0;
 602                        else if ((tod_2000.hour1 & TOD2000_HOUR1_PM) && t->tm_hour != 12)
 603                                t->tm_hour += 12;
 604                }
 605        } else {
 606                tod_2000.second1 = t->tm_sec / 10;
 607                tod_2000.second2 = t->tm_sec % 10;
 608                tod_2000.minute1 = t->tm_min / 10;
 609                tod_2000.minute2 = t->tm_min % 10;
 610                if (tod_2000.cntrl3 & TOD2000_CNTRL3_24HMODE)
 611                        tod_2000.hour1 = t->tm_hour / 10;
 612                else if (t->tm_hour >= 12)
 613                        tod_2000.hour1 = TOD2000_HOUR1_PM +
 614                                (t->tm_hour - 12) / 10;
 615                else
 616                        tod_2000.hour1 = t->tm_hour / 10;
 617                tod_2000.hour2   = t->tm_hour % 10;
 618                tod_2000.day1    = t->tm_mday / 10;
 619                tod_2000.day2    = t->tm_mday % 10;
 620                if (t->tm_wday != -1)
 621                        tod_2000.weekday = t->tm_wday;
 622                tod_2000.month1  = (t->tm_mon + 1) / 10;
 623                tod_2000.month2  = (t->tm_mon + 1) % 10;
 624                if (t->tm_year >= 100)
 625                        t->tm_year -= 100;
 626                tod_2000.year1   = t->tm_year / 10;
 627                tod_2000.year2   = t->tm_year % 10;
 628        }
 629
 630        tod_2000.cntrl1 &= ~TOD2000_CNTRL1_HOLD;
 631
 632        return 0;
 633}
 634
 635static int amiga_set_clock_mmss(unsigned long nowtime)
 636{
 637        short real_seconds = nowtime % 60, real_minutes = (nowtime / 60) % 60;
 638
 639        if (AMIGAHW_PRESENT(A3000_CLK)) {
 640                tod_3000.cntrl1 = TOD3000_CNTRL1_HOLD;
 641
 642                tod_3000.second1 = real_seconds / 10;
 643                tod_3000.second2 = real_seconds % 10;
 644                tod_3000.minute1 = real_minutes / 10;
 645                tod_3000.minute2 = real_minutes % 10;
 646
 647                tod_3000.cntrl1 = TOD3000_CNTRL1_FREE;
 648        } else /* if (AMIGAHW_PRESENT(A2000_CLK)) */ {
 649                int cnt = 5;
 650
 651                tod_2000.cntrl1 |= TOD2000_CNTRL1_HOLD;
 652
 653                while ((tod_2000.cntrl1 & TOD2000_CNTRL1_BUSY) && cnt) {
 654                        tod_2000.cntrl1 &= ~TOD2000_CNTRL1_HOLD;
 655                        udelay(70);
 656                        tod_2000.cntrl1 |= TOD2000_CNTRL1_HOLD;
 657                        --cnt;
 658                }
 659
 660                if (!cnt)
 661                        printk(KERN_INFO "set_clock_mmss: timed out waiting for RTC (0x%x)\n", tod_2000.cntrl1);
 662
 663                tod_2000.second1 = real_seconds / 10;
 664                tod_2000.second2 = real_seconds % 10;
 665                tod_2000.minute1 = real_minutes / 10;
 666                tod_2000.minute2 = real_minutes % 10;
 667
 668                tod_2000.cntrl1 &= ~TOD2000_CNTRL1_HOLD;
 669        }
 670
 671        return 0;
 672}
 673
 674static unsigned int amiga_get_ss(void)
 675{
 676        unsigned int s;
 677
 678        if (AMIGAHW_PRESENT(A3000_CLK)) {
 679                tod_3000.cntrl1 = TOD3000_CNTRL1_HOLD;
 680                s = tod_3000.second1 * 10 + tod_3000.second2;
 681                tod_3000.cntrl1 = TOD3000_CNTRL1_FREE;
 682        } else /* if (AMIGAHW_PRESENT(A2000_CLK)) */ {
 683                s = tod_2000.second1 * 10 + tod_2000.second2;
 684        }
 685        return s;
 686}
 687
 688static NORET_TYPE void amiga_reset(void)
 689    ATTRIB_NORET;
 690
 691static void amiga_reset(void)
 692{
 693        unsigned long jmp_addr040 = virt_to_phys(&&jmp_addr_label040);
 694        unsigned long jmp_addr = virt_to_phys(&&jmp_addr_label);
 695
 696        local_irq_disable();
 697        if (CPU_IS_040_OR_060)
 698                /* Setup transparent translation registers for mapping
 699                 * of 16 MB kernel segment before disabling translation
 700                 */
 701                asm volatile ("\n"
 702                        "       move.l  %0,%%d0\n"
 703                        "       and.l   #0xff000000,%%d0\n"
 704                        "       or.w    #0xe020,%%d0\n"   /* map 16 MB, enable, cacheable */
 705                        "       .chip   68040\n"
 706                        "       movec   %%d0,%%itt0\n"
 707                        "       movec   %%d0,%%dtt0\n"
 708                        "       .chip   68k\n"
 709                        "       jmp     %0@\n"
 710                        : /* no outputs */
 711                        : "a" (jmp_addr040)
 712                        : "d0");
 713        else
 714                /* for 680[23]0, just disable translation and jump to the physical
 715                 * address of the label
 716                 */
 717                asm volatile ("\n"
 718                        "       pmove   %%tc,%@\n"
 719                        "       bclr    #7,%@\n"
 720                        "       pmove   %@,%%tc\n"
 721                        "       jmp     %0@\n"
 722                        : /* no outputs */
 723                        : "a" (jmp_addr));
 724jmp_addr_label040:
 725        /* disable translation on '040 now */
 726        asm volatile ("\n"
 727                "       moveq   #0,%%d0\n"
 728                "       .chip   68040\n"
 729                "       movec   %%d0,%%tc\n"    /* disable MMU */
 730                "       .chip   68k\n"
 731                : /* no outputs */
 732                : /* no inputs */
 733                : "d0");
 734
 735        jmp_addr_label:
 736        /* pickup reset address from AmigaOS ROM, reset devices and jump
 737         * to reset address
 738         */
 739        asm volatile ("\n"
 740                "       move.w  #0x2700,%sr\n"
 741                "       lea     0x01000000,%a0\n"
 742                "       sub.l   %a0@(-0x14),%a0\n"
 743                "       move.l  %a0@(4),%a0\n"
 744                "       subq.l  #2,%a0\n"
 745                "       jra     1f\n"
 746                /* align on a longword boundary */
 747                "       " __ALIGN_STR "\n"
 748                "1:\n"
 749                "       reset\n"
 750                "       jmp   %a0@");
 751
 752        for (;;)
 753                ;
 754}
 755
 756
 757    /*
 758     *  Debugging
 759     */
 760
 761#define SAVEKMSG_MAXMEM         128*1024
 762
 763#define SAVEKMSG_MAGIC1         0x53415645      /* 'SAVE' */
 764#define SAVEKMSG_MAGIC2         0x4B4D5347      /* 'KMSG' */
 765
 766struct savekmsg {
 767        unsigned long magic1;           /* SAVEKMSG_MAGIC1 */
 768        unsigned long magic2;           /* SAVEKMSG_MAGIC2 */
 769        unsigned long magicptr;         /* address of magic1 */
 770        unsigned long size;
 771        char data[0];
 772};
 773
 774static struct savekmsg *savekmsg;
 775
 776static void amiga_mem_console_write(struct console *co, const char *s,
 777                                    unsigned int count)
 778{
 779        if (savekmsg->size + count <= SAVEKMSG_MAXMEM-sizeof(struct savekmsg)) {
 780                memcpy(savekmsg->data + savekmsg->size, s, count);
 781                savekmsg->size += count;
 782        }
 783}
 784
 785static int __init amiga_savekmsg_setup(char *arg)
 786{
 787        static struct resource debug_res = { .name = "Debug" };
 788
 789        if (!MACH_IS_AMIGA || strcmp(arg, "mem"))
 790                goto done;
 791
 792        if (!AMIGAHW_PRESENT(CHIP_RAM)) {
 793                printk("Warning: no chipram present for debugging\n");
 794                goto done;
 795        }
 796
 797        savekmsg = amiga_chip_alloc_res(SAVEKMSG_MAXMEM, &debug_res);
 798        savekmsg->magic1 = SAVEKMSG_MAGIC1;
 799        savekmsg->magic2 = SAVEKMSG_MAGIC2;
 800        savekmsg->magicptr = ZTWO_PADDR(savekmsg);
 801        savekmsg->size = 0;
 802
 803        amiga_console_driver.write = amiga_mem_console_write;
 804        register_console(&amiga_console_driver);
 805
 806done:
 807        return 0;
 808}
 809
 810early_param("debug", amiga_savekmsg_setup);
 811
 812static void amiga_serial_putc(char c)
 813{
 814        amiga_custom.serdat = (unsigned char)c | 0x100;
 815        while (!(amiga_custom.serdatr & 0x2000))
 816                ;
 817}
 818
 819static void amiga_serial_console_write(struct console *co, const char *s,
 820                                       unsigned int count)
 821{
 822        while (count--) {
 823                if (*s == '\n')
 824                        amiga_serial_putc('\r');
 825                amiga_serial_putc(*s++);
 826        }
 827}
 828
 829#if 0
 830void amiga_serial_puts(const char *s)
 831{
 832        amiga_serial_console_write(NULL, s, strlen(s));
 833}
 834
 835int amiga_serial_console_wait_key(struct console *co)
 836{
 837        int ch;
 838
 839        while (!(amiga_custom.intreqr & IF_RBF))
 840                barrier();
 841        ch = amiga_custom.serdatr & 0xff;
 842        /* clear the interrupt, so that another character can be read */
 843        amiga_custom.intreq = IF_RBF;
 844        return ch;
 845}
 846
 847void amiga_serial_gets(struct console *co, char *s, int len)
 848{
 849        int ch, cnt = 0;
 850
 851        while (1) {
 852                ch = amiga_serial_console_wait_key(co);
 853
 854                /* Check for backspace. */
 855                if (ch == 8 || ch == 127) {
 856                        if (cnt == 0) {
 857                                amiga_serial_putc('\007');
 858                                continue;
 859                        }
 860                        cnt--;
 861                        amiga_serial_puts("\010 \010");
 862                        continue;
 863                }
 864
 865                /* Check for enter. */
 866                if (ch == 10 || ch == 13)
 867                        break;
 868
 869                /* See if line is too long. */
 870                if (cnt >= len + 1) {
 871                        amiga_serial_putc(7);
 872                        cnt--;
 873                        continue;
 874                }
 875
 876                /* Store and echo character. */
 877                s[cnt++] = ch;
 878                amiga_serial_putc(ch);
 879        }
 880        /* Print enter. */
 881        amiga_serial_puts("\r\n");
 882        s[cnt] = 0;
 883}
 884#endif
 885
 886static int __init amiga_debug_setup(char *arg)
 887{
 888        if (MACH_IS_AMIGA && !strcmp(arg, "ser")) {
 889                /* no initialization required (?) */
 890                amiga_console_driver.write = amiga_serial_console_write;
 891                register_console(&amiga_console_driver);
 892        }
 893        return 0;
 894}
 895
 896early_param("debug", amiga_debug_setup);
 897
 898#ifdef CONFIG_HEARTBEAT
 899static void amiga_heartbeat(int on)
 900{
 901        if (on)
 902                ciaa.pra &= ~2;
 903        else
 904                ciaa.pra |= 2;
 905}
 906#endif
 907
 908    /*
 909     *  Amiga specific parts of /proc
 910     */
 911
 912static void amiga_get_model(char *model)
 913{
 914        strcpy(model, amiga_model_name);
 915}
 916
 917
 918static void amiga_get_hardware_list(struct seq_file *m)
 919{
 920        if (AMIGAHW_PRESENT(CHIP_RAM))
 921                seq_printf(m, "Chip RAM:\t%ldK\n", amiga_chip_size>>10);
 922        seq_printf(m, "PS Freq:\t%dHz\nEClock Freq:\t%ldHz\n",
 923                        amiga_psfreq, amiga_eclock);
 924        if (AMIGAHW_PRESENT(AMI_VIDEO)) {
 925                char *type;
 926                switch (amiga_chipset) {
 927                case CS_OCS:
 928                        type = "OCS";
 929                        break;
 930                case CS_ECS:
 931                        type = "ECS";
 932                        break;
 933                case CS_AGA:
 934                        type = "AGA";
 935                        break;
 936                default:
 937                        type = "Old or Unknown";
 938                        break;
 939                }
 940                seq_printf(m, "Graphics:\t%s\n", type);
 941        }
 942
 943#define AMIGAHW_ANNOUNCE(name, str)                     \
 944        if (AMIGAHW_PRESENT(name))                      \
 945                seq_printf (m, "\t%s\n", str)
 946
 947        seq_printf (m, "Detected hardware:\n");
 948
 949        AMIGAHW_ANNOUNCE(AMI_VIDEO, "Amiga Video");
 950        AMIGAHW_ANNOUNCE(AMI_BLITTER, "Blitter");
 951        AMIGAHW_ANNOUNCE(AMBER_FF, "Amber Flicker Fixer");
 952        AMIGAHW_ANNOUNCE(AMI_AUDIO, "Amiga Audio");
 953        AMIGAHW_ANNOUNCE(AMI_FLOPPY, "Floppy Controller");
 954        AMIGAHW_ANNOUNCE(A3000_SCSI, "SCSI Controller WD33C93 (A3000 style)");
 955        AMIGAHW_ANNOUNCE(A4000_SCSI, "SCSI Controller NCR53C710 (A4000T style)");
 956        AMIGAHW_ANNOUNCE(A1200_IDE, "IDE Interface (A1200 style)");
 957        AMIGAHW_ANNOUNCE(A4000_IDE, "IDE Interface (A4000 style)");
 958        AMIGAHW_ANNOUNCE(CD_ROM, "Internal CD ROM drive");
 959        AMIGAHW_ANNOUNCE(AMI_KEYBOARD, "Keyboard");
 960        AMIGAHW_ANNOUNCE(AMI_MOUSE, "Mouse Port");
 961        AMIGAHW_ANNOUNCE(AMI_SERIAL, "Serial Port");
 962        AMIGAHW_ANNOUNCE(AMI_PARALLEL, "Parallel Port");
 963        AMIGAHW_ANNOUNCE(A2000_CLK, "Hardware Clock (A2000 style)");
 964        AMIGAHW_ANNOUNCE(A3000_CLK, "Hardware Clock (A3000 style)");
 965        AMIGAHW_ANNOUNCE(CHIP_RAM, "Chip RAM");
 966        AMIGAHW_ANNOUNCE(PAULA, "Paula 8364");
 967        AMIGAHW_ANNOUNCE(DENISE, "Denise 8362");
 968        AMIGAHW_ANNOUNCE(DENISE_HR, "Denise 8373");
 969        AMIGAHW_ANNOUNCE(LISA, "Lisa 8375");
 970        AMIGAHW_ANNOUNCE(AGNUS_PAL, "Normal/Fat PAL Agnus 8367/8371");
 971        AMIGAHW_ANNOUNCE(AGNUS_NTSC, "Normal/Fat NTSC Agnus 8361/8370");
 972        AMIGAHW_ANNOUNCE(AGNUS_HR_PAL, "Fat Hires PAL Agnus 8372");
 973        AMIGAHW_ANNOUNCE(AGNUS_HR_NTSC, "Fat Hires NTSC Agnus 8372");
 974        AMIGAHW_ANNOUNCE(ALICE_PAL, "PAL Alice 8374");
 975        AMIGAHW_ANNOUNCE(ALICE_NTSC, "NTSC Alice 8374");
 976        AMIGAHW_ANNOUNCE(MAGIC_REKICK, "Magic Hard Rekick");
 977        AMIGAHW_ANNOUNCE(PCMCIA, "PCMCIA Slot");
 978#ifdef CONFIG_ZORRO
 979        if (AMIGAHW_PRESENT(ZORRO))
 980                seq_printf(m, "\tZorro II%s AutoConfig: %d Expansion "
 981                                "Device%s\n",
 982                                AMIGAHW_PRESENT(ZORRO3) ? "I" : "",
 983                                zorro_num_autocon, zorro_num_autocon == 1 ? "" : "s");
 984#endif /* CONFIG_ZORRO */
 985
 986#undef AMIGAHW_ANNOUNCE
 987}
 988
 989/*
 990 * The Amiga keyboard driver needs key_maps, but we cannot export it in
 991 * drivers/char/defkeymap.c, as it is autogenerated
 992 */
 993#ifdef CONFIG_HW_CONSOLE
 994EXPORT_SYMBOL_GPL(key_maps);
 995#endif
 996