arch/m68k/amiga/config.c

   1 /*
   2  *  linux/arch/m68k/amiga/config.c
   3  *
   4  *  Copyright (C) 1993 Hamish Macdonald
   5  *
   6  * This file is subject to the terms and conditions of the GNU General Public
   7  * License.  See the file COPYING in the main directory of this archive
   8  * for more details.
   9  */
  10
  11 /*
  12  * Miscellaneous Amiga stuff
  13  */
  14
  15 #include <linux/types.h>
  16 #include <linux/kernel.h>
  17 #include <linux/mm.h>
  18 #include <linux/tty.h>
  19 #include <linux/console.h>
  20 #include <linux/rtc.h>
  21 #include <linux/init.h>
  22 #include <linux/vt_kern.h>
  23 #include <linux/delay.h>
  24 #include <linux/interrupt.h>
  25 #ifdef CONFIG_ZORRO
  26 #include <linux/zorro.h>
  27 #endif
  28
  29 #include <asm/bootinfo.h>
  30 #include <asm/setup.h>
  31 #include <asm/system.h>
  32 #include <asm/pgtable.h>
  33 #include <asm/amigahw.h>
  34 #include <asm/amigaints.h>
  35 #include <asm/irq.h>
  36 #include <asm/rtc.h>
  37 #include <asm/machdep.h>
  38 #include <asm/io.h>
  39
  40 unsigned long amiga_model;
  41 unsigned long amiga_eclock;
  42 unsigned long amiga_masterclock;
  43 unsigned long amiga_colorclock;
  44 unsigned long amiga_chipset;
  45 unsigned char amiga_vblank;
  46 unsigned char amiga_psfreq;
  47 struct amiga_hw_present amiga_hw_present;
  48
  49 static char s_a500[] __initdata = "A500";
  50 static char s_a500p[] __initdata = "A500+";
  51 static char s_a600[] __initdata = "A600";
  52 static char s_a1000[] __initdata = "A1000";
  53 static char s_a1200[] __initdata = "A1200";
  54 static char s_a2000[] __initdata = "A2000";
  55 static char s_a2500[] __initdata = "A2500";
  56 static char s_a3000[] __initdata = "A3000";
  57 static char s_a3000t[] __initdata = "A3000T";
  58 static char s_a3000p[] __initdata = "A3000+";
  59 static char s_a4000[] __initdata = "A4000";
  60 static char s_a4000t[] __initdata = "A4000T";
  61 static char s_cdtv[] __initdata = "CDTV";
  62 static char s_cd32[] __initdata = "CD32";
  63 static char s_draco[] __initdata = "Draco";
  64 static char *amiga_models[] __initdata = {
  65     [AMI_500-AMI_500]           = s_a500,
  66     [AMI_500PLUS-AMI_500]       = s_a500p,
  67     [AMI_600-AMI_500]           = s_a600,
  68     [AMI_1000-AMI_500]          = s_a1000,
  69     [AMI_1200-AMI_500]          = s_a1200,
  70     [AMI_2000-AMI_500]          = s_a2000,
  71     [AMI_2500-AMI_500]          = s_a2500,
  72     [AMI_3000-AMI_500]          = s_a3000,
  73     [AMI_3000T-AMI_500]         = s_a3000t,
  74     [AMI_3000PLUS-AMI_500]      = s_a3000p,
  75     [AMI_4000-AMI_500]          = s_a4000,
  76     [AMI_4000T-AMI_500]         = s_a4000t,
  77     [AMI_CDTV-AMI_500]          = s_cdtv,
  78     [AMI_CD32-AMI_500]          = s_cd32,
  79     [AMI_DRACO-AMI_500]         = s_draco,
  80 };
  81
  82 static char amiga_model_name[13] = "Amiga ";
  83
  84 extern char m68k_debug_device[];
  85
  86 static void amiga_sched_init(irq_handler_t handler);
  87 /* amiga specific irq functions */
  88 extern void amiga_init_IRQ (void);
  89 static void amiga_get_model(char *model);
  90 static int amiga_get_hardware_list(char *buffer);
  91 /* amiga specific timer functions */
  92 static unsigned long amiga_gettimeoffset (void);
  93 static int a3000_hwclk (int, struct rtc_time *);
  94 static int a2000_hwclk (int, struct rtc_time *);
  95 static int amiga_set_clock_mmss (unsigned long);
  96 static unsigned int amiga_get_ss (void);
  97 extern void amiga_mksound( unsigned int count, unsigned int ticks );
  98 static void amiga_reset (void);
  99 extern void amiga_init_sound(void);
 100 static void amiga_savekmsg_init(void);
 101 static void amiga_mem_console_write(struct console *co, const char *b,
 102                                     unsigned int count);
 103 void amiga_serial_console_write(struct console *co, const char *s,
 104                                 unsigned int count);
 105 static void amiga_debug_init(void);
 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 rtc_resource = {
 139     .start = 0x00dc0000, .end = 0x00dcffff
 140 };
 141
 142 static struct resource ram_resource[NUM_MEMINFO];
 143
 144
 145     /*
 146      *  Parse an Amiga-specific record in the bootinfo
 147      */
 148
 149 int amiga_parse_bootinfo(const struct bi_record *record)
 150 {
 151     int unknown = 0;
 152     const unsigned long *data = record->data;
 153
 154     switch (record->tag) {
 155         case BI_AMIGA_MODEL:
 156             amiga_model = *data;
 157             break;
 158
 159         case BI_AMIGA_ECLOCK:
 160             amiga_eclock = *data;
 161             break;
 162
 163         case BI_AMIGA_CHIPSET:
 164             amiga_chipset = *data;
 165             break;
 166
 167         case BI_AMIGA_CHIP_SIZE:
 168             amiga_chip_size = *(const int *)data;
 169             break;
 170
 171         case BI_AMIGA_VBLANK:
 172             amiga_vblank = *(const unsigned char *)data;
 173             break;
 174
 175         case BI_AMIGA_PSFREQ:
 176             amiga_psfreq = *(const unsigned char *)data;
 177             break;
 178
 179         case BI_AMIGA_AUTOCON:
 180 #ifdef CONFIG_ZORRO
 181             if (zorro_num_autocon < ZORRO_NUM_AUTO) {
 182                 const struct ConfigDev *cd = (struct ConfigDev *)data;
 183                 struct zorro_dev *dev = &zorro_autocon[zorro_num_autocon++];
 184                 dev->rom = cd->cd_Rom;
 185                 dev->slotaddr = cd->cd_SlotAddr;
 186                 dev->slotsize = cd->cd_SlotSize;
 187                 dev->resource.start = (unsigned long)cd->cd_BoardAddr;
 188                 dev->resource.end = dev->resource.start+cd->cd_BoardSize-1;
 189             } else
 190                 printk("amiga_parse_bootinfo: too many AutoConfig devices\n");
 191 #endif /* CONFIG_ZORRO */
 192             break;
 193
 194         case BI_AMIGA_SERPER:
 195             /* serial port period: ignored here */
 196             break;
 197
 198         default:
 199             unknown = 1;
 200     }
 201     return(unknown);
 202 }
 203
 204     /*
 205      *  Identify builtin hardware
 206      */
 207
 208 static void __init amiga_identify(void)
 209 {
 210   /* Fill in some default values, if necessary */
 211   if (amiga_eclock == 0)
 212     amiga_eclock = 709379;
 213
 214   memset(&amiga_hw_present, 0, sizeof(amiga_hw_present));
 215
 216   printk("Amiga hardware found: ");
 217   if (amiga_model >= AMI_500 && amiga_model <= AMI_DRACO) {
 218     printk("[%s] ", amiga_models[amiga_model-AMI_500]);
 219     strcat(amiga_model_name, amiga_models[amiga_model-AMI_500]);
 220   }
 221
 222   switch(amiga_model) {
 223   case AMI_UNKNOWN:
 224     goto Generic;
 225
 226   case AMI_600:
 227   case AMI_1200:
 228     AMIGAHW_SET(A1200_IDE);
 229     AMIGAHW_SET(PCMCIA);
 230   case AMI_500:
 231   case AMI_500PLUS:
 232   case AMI_1000:
 233   case AMI_2000:
 234   case AMI_2500:
 235     AMIGAHW_SET(A2000_CLK);     /* Is this correct for all models? */
 236     goto Generic;
 237
 238   case AMI_3000:
 239   case AMI_3000T:
 240     AMIGAHW_SET(AMBER_FF);
 241     AMIGAHW_SET(MAGIC_REKICK);
 242     /* fall through */
 243   case AMI_3000PLUS:
 244     AMIGAHW_SET(A3000_SCSI);
 245     AMIGAHW_SET(A3000_CLK);
 246     AMIGAHW_SET(ZORRO3);
 247     goto Generic;
 248
 249   case AMI_4000T:
 250     AMIGAHW_SET(A4000_SCSI);
 251     /* fall through */
 252   case AMI_4000:
 253     AMIGAHW_SET(A4000_IDE);
 254     AMIGAHW_SET(A3000_CLK);
 255     AMIGAHW_SET(ZORRO3);
 256     goto Generic;
 257
 258   case AMI_CDTV:
 259   case AMI_CD32:
 260     AMIGAHW_SET(CD_ROM);
 261     AMIGAHW_SET(A2000_CLK);             /* Is this correct? */
 262     goto Generic;
 263
 264   Generic:
 265     AMIGAHW_SET(AMI_VIDEO);
 266     AMIGAHW_SET(AMI_BLITTER);
 267     AMIGAHW_SET(AMI_AUDIO);
 268     AMIGAHW_SET(AMI_FLOPPY);
 269     AMIGAHW_SET(AMI_KEYBOARD);
 270     AMIGAHW_SET(AMI_MOUSE);
 271     AMIGAHW_SET(AMI_SERIAL);
 272     AMIGAHW_SET(AMI_PARALLEL);
 273     AMIGAHW_SET(CHIP_RAM);
 274     AMIGAHW_SET(PAULA);
 275
 276     switch(amiga_chipset) {
 277     case CS_OCS:
 278     case CS_ECS:
 279     case CS_AGA:
 280       switch (amiga_custom.deniseid & 0xf) {
 281       case 0x0c:
 282         AMIGAHW_SET(DENISE_HR);
 283         break;
 284       case 0x08:
 285         AMIGAHW_SET(LISA);
 286         break;
 287       }
 288       break;
 289     default:
 290       AMIGAHW_SET(DENISE);
 291       break;
 292     }
 293     switch ((amiga_custom.vposr>>8) & 0x7f) {
 294     case 0x00:
 295       AMIGAHW_SET(AGNUS_PAL);
 296       break;
 297     case 0x10:
 298       AMIGAHW_SET(AGNUS_NTSC);
 299       break;
 300     case 0x20:
 301     case 0x21:
 302       AMIGAHW_SET(AGNUS_HR_PAL);
 303       break;
 304     case 0x30:
 305     case 0x31:
 306       AMIGAHW_SET(AGNUS_HR_NTSC);
 307       break;
 308     case 0x22:
 309     case 0x23:
 310       AMIGAHW_SET(ALICE_PAL);
 311       break;
 312     case 0x32:
 313     case 0x33:
 314       AMIGAHW_SET(ALICE_NTSC);
 315       break;
 316     }
 317     AMIGAHW_SET(ZORRO);
 318     break;
 319
 320   case AMI_DRACO:
 321     panic("No support for Draco yet");
 322
 323   default:
 324     panic("Unknown Amiga Model");
 325   }
 326
 327 #define AMIGAHW_ANNOUNCE(name, str)                     \
 328   if (AMIGAHW_PRESENT(name))                            \
 329     printk(str)
 330
 331   AMIGAHW_ANNOUNCE(AMI_VIDEO, "VIDEO ");
 332   AMIGAHW_ANNOUNCE(AMI_BLITTER, "BLITTER ");
 333   AMIGAHW_ANNOUNCE(AMBER_FF, "AMBER_FF ");
 334   AMIGAHW_ANNOUNCE(AMI_AUDIO, "AUDIO ");
 335   AMIGAHW_ANNOUNCE(AMI_FLOPPY, "FLOPPY ");
 336   AMIGAHW_ANNOUNCE(A3000_SCSI, "A3000_SCSI ");
 337   AMIGAHW_ANNOUNCE(A4000_SCSI, "A4000_SCSI ");
 338   AMIGAHW_ANNOUNCE(A1200_IDE, "A1200_IDE ");
 339   AMIGAHW_ANNOUNCE(A4000_IDE, "A4000_IDE ");
 340   AMIGAHW_ANNOUNCE(CD_ROM, "CD_ROM ");
 341   AMIGAHW_ANNOUNCE(AMI_KEYBOARD, "KEYBOARD ");
 342   AMIGAHW_ANNOUNCE(AMI_MOUSE, "MOUSE ");
 343   AMIGAHW_ANNOUNCE(AMI_SERIAL, "SERIAL ");
 344   AMIGAHW_ANNOUNCE(AMI_PARALLEL, "PARALLEL ");
 345   AMIGAHW_ANNOUNCE(A2000_CLK, "A2000_CLK ");
 346   AMIGAHW_ANNOUNCE(A3000_CLK, "A3000_CLK ");
 347   AMIGAHW_ANNOUNCE(CHIP_RAM, "CHIP_RAM ");
 348   AMIGAHW_ANNOUNCE(PAULA, "PAULA ");
 349   AMIGAHW_ANNOUNCE(DENISE, "DENISE ");
 350   AMIGAHW_ANNOUNCE(DENISE_HR, "DENISE_HR ");
 351   AMIGAHW_ANNOUNCE(LISA, "LISA ");
 352   AMIGAHW_ANNOUNCE(AGNUS_PAL, "AGNUS_PAL ");
 353   AMIGAHW_ANNOUNCE(AGNUS_NTSC, "AGNUS_NTSC ");
 354   AMIGAHW_ANNOUNCE(AGNUS_HR_PAL, "AGNUS_HR_PAL ");
 355   AMIGAHW_ANNOUNCE(AGNUS_HR_NTSC, "AGNUS_HR_NTSC ");
 356   AMIGAHW_ANNOUNCE(ALICE_PAL, "ALICE_PAL ");
 357   AMIGAHW_ANNOUNCE(ALICE_NTSC, "ALICE_NTSC ");
 358   AMIGAHW_ANNOUNCE(MAGIC_REKICK, "MAGIC_REKICK ");
 359   AMIGAHW_ANNOUNCE(PCMCIA, "PCMCIA ");
 360   if (AMIGAHW_PRESENT(ZORRO))
 361     printk("ZORRO%s ", AMIGAHW_PRESENT(ZORRO3) ? "3" : "");
 362   printk("\n");
 363
 364 #undef AMIGAHW_ANNOUNCE
 365 }
 366
 367     /*
 368      *  Setup the Amiga configuration info
 369      */
 370
 371 void __init config_amiga(void)
 372 {
 373   int i;
 374
 375   amiga_debug_init();
 376   amiga_identify();
 377
 378   /* Yuk, we don't have PCI memory */
 379   iomem_resource.name = "Memory";
 380   for (i = 0; i < 4; i++)
 381     request_resource(&iomem_resource, &((struct resource *)&mb_resources)[i]);
 382
 383   mach_sched_init      = amiga_sched_init;
 384   mach_init_IRQ        = amiga_init_IRQ;
 385   mach_get_model       = amiga_get_model;
 386   mach_get_hardware_list = amiga_get_hardware_list;
 387   mach_gettimeoffset   = amiga_gettimeoffset;
 388   if (AMIGAHW_PRESENT(A3000_CLK)){
 389     mach_hwclk         = a3000_hwclk;
 390     rtc_resource.name = "A3000 RTC";
 391     request_resource(&iomem_resource, &rtc_resource);
 392   }
 393   else{ /* if (AMIGAHW_PRESENT(A2000_CLK)) */
 394     mach_hwclk         = a2000_hwclk;
 395     rtc_resource.name = "A2000 RTC";
 396     request_resource(&iomem_resource, &rtc_resource);
 397   }
 398
 399   mach_max_dma_address = 0xffffffff; /*
 400                                       * default MAX_DMA=0xffffffff
 401                                       * on all machines. If we don't
 402                                       * do so, the SCSI code will not
 403                                       * be able to allocate any mem
 404                                       * for transfers, unless we are
 405                                       * dealing with a Z2 mem only
 406                                       * system.                  /Jes
 407                                       */
 408
 409   mach_set_clock_mmss  = amiga_set_clock_mmss;
 410   mach_get_ss          = amiga_get_ss;
 411   mach_reset           = amiga_reset;
 412 #if defined(CONFIG_INPUT_M68K_BEEP) || defined(CONFIG_INPUT_M68K_BEEP_MODULE)
 413   mach_beep            = amiga_mksound;
 414 #endif
 415
 416 #ifdef CONFIG_HEARTBEAT
 417   mach_heartbeat = amiga_heartbeat;
 418 #endif
 419
 420   /* Fill in the clock values (based on the 700 kHz E-Clock) */
 421   amiga_masterclock = 40*amiga_eclock;  /* 28 MHz */
 422   amiga_colorclock = 5*amiga_eclock;    /* 3.5 MHz */
 423
 424   /* clear all DMA bits */
 425   amiga_custom.dmacon = DMAF_ALL;
 426   /* ensure that the DMA master bit is set */
 427   amiga_custom.dmacon = DMAF_SETCLR | DMAF_MASTER;
 428
 429   /* don't use Z2 RAM as system memory on Z3 capable machines */
 430   if (AMIGAHW_PRESENT(ZORRO3)) {
 431     int i, j;
 432     u32 disabled_z2mem = 0;
 433     for (i = 0; i < m68k_num_memory; i++)
 434       if (m68k_memory[i].addr < 16*1024*1024) {
 435         if (i == 0) {
 436           /* don't cut off the branch we're sitting on */
 437           printk("Warning: kernel runs in Zorro II memory\n");
 438           continue;
 439         }
 440         disabled_z2mem += m68k_memory[i].size;
 441         m68k_num_memory--;
 442         for (j = i; j < m68k_num_memory; j++)
 443           m68k_memory[j] = m68k_memory[j+1];
 444         i--;
 445       }
 446     if (disabled_z2mem)
 447       printk("%dK of Zorro II memory will not be used as system memory\n",
 448              disabled_z2mem>>10);
 449   }
 450
 451   /* request all RAM */
 452   for (i = 0; i < m68k_num_memory; i++) {
 453     ram_resource[i].name =
 454       (m68k_memory[i].addr >= 0x01000000) ? "32-bit Fast RAM" :
 455       (m68k_memory[i].addr < 0x00c00000) ? "16-bit Fast RAM" :
 456       "16-bit Slow RAM";
 457     ram_resource[i].start = m68k_memory[i].addr;
 458     ram_resource[i].end = m68k_memory[i].addr+m68k_memory[i].size-1;
 459     request_resource(&iomem_resource, &ram_resource[i]);
 460   }
 461
 462   /* initialize chipram allocator */
 463   amiga_chip_init ();
 464
 465   /* debugging using chipram */
 466   if (!strcmp( m68k_debug_device, "mem" )){
 467           if (!AMIGAHW_PRESENT(CHIP_RAM))
 468                   printk("Warning: no chipram present for debugging\n");
 469           else {
 470                   amiga_savekmsg_init();
 471                   amiga_console_driver.write = amiga_mem_console_write;
 472                   register_console(&amiga_console_driver);
 473           }
 474   }
 475
 476   /* our beloved beeper */
 477   if (AMIGAHW_PRESENT(AMI_AUDIO))
 478           amiga_init_sound();
 479
 480   /*
 481    * if it is an A3000, set the magic bit that forces
 482    * a hard rekick
 483    */
 484   if (AMIGAHW_PRESENT(MAGIC_REKICK))
 485           *(unsigned char *)ZTWO_VADDR(0xde0002) |= 0x80;
 486 }
 487
 488 static unsigned short jiffy_ticks;
 489
 490 static void __init amiga_sched_init(irq_handler_t timer_routine)
 491 {
 492         static struct resource sched_res = {
 493             .name = "timer", .start = 0x00bfd400, .end = 0x00bfd5ff,
 494         };
 495         jiffy_ticks = (amiga_eclock+HZ/2)/HZ;
 496
 497         if (request_resource(&mb_resources._ciab, &sched_res))
 498             printk("Cannot allocate ciab.ta{lo,hi}\n");
 499         ciab.cra &= 0xC0;   /* turn off timer A, continuous mode, from Eclk */
 500         ciab.talo = jiffy_ticks % 256;
 501         ciab.tahi = jiffy_ticks / 256;
 502
 503         /* install interrupt service routine for CIAB Timer A
 504          *
 505          * Please don't change this to use ciaa, as it interferes with the
 506          * SCSI code. We'll have to take a look at this later
 507          */
 508         request_irq(IRQ_AMIGA_CIAB_TA, timer_routine, 0, "timer", NULL);
 509         /* start timer */
 510         ciab.cra |= 0x11;
 511 }
 512
 513 #define TICK_SIZE 10000
 514
 515 /* This is always executed with interrupts disabled.  */
 516 static unsigned long amiga_gettimeoffset (void)
 517 {
 518         unsigned short hi, lo, hi2;
 519         unsigned long ticks, offset = 0;
 520
 521         /* read CIA B timer A current value */
 522         hi  = ciab.tahi;
 523         lo  = ciab.talo;
 524         hi2 = ciab.tahi;
 525
 526         if (hi != hi2) {
 527                 lo = ciab.talo;
 528                 hi = hi2;
 529         }
 530
 531         ticks = hi << 8 | lo;
 532
 533         if (ticks > jiffy_ticks / 2)
 534                 /* check for pending interrupt */
 535                 if (cia_set_irq(&ciab_base, 0) & CIA_ICR_TA)
 536                         offset = 10000;
 537
 538         ticks = jiffy_ticks - ticks;
 539         ticks = (10000 * ticks) / jiffy_ticks;
 540
 541         return ticks + offset;
 542 }
 543
 544 static int a3000_hwclk(int op, struct rtc_time *t)
 545 {
 546         tod_3000.cntrl1 = TOD3000_CNTRL1_HOLD;
 547
 548         if (!op) { /* read */
 549                 t->tm_sec  = tod_3000.second1 * 10 + tod_3000.second2;
 550                 t->tm_min  = tod_3000.minute1 * 10 + tod_3000.minute2;
 551                 t->tm_hour = tod_3000.hour1   * 10 + tod_3000.hour2;
 552                 t->tm_mday = tod_3000.day1    * 10 + tod_3000.day2;
 553                 t->tm_wday = tod_3000.weekday;
 554                 t->tm_mon  = tod_3000.month1  * 10 + tod_3000.month2 - 1;
 555                 t->tm_year = tod_3000.year1   * 10 + tod_3000.year2;
 556                 if (t->tm_year <= 69)
 557                         t->tm_year += 100;
 558         } else {
 559                 tod_3000.second1 = t->tm_sec / 10;
 560                 tod_3000.second2 = t->tm_sec % 10;
 561                 tod_3000.minute1 = t->tm_min / 10;
 562                 tod_3000.minute2 = t->tm_min % 10;
 563                 tod_3000.hour1   = t->tm_hour / 10;
 564                 tod_3000.hour2   = t->tm_hour % 10;
 565                 tod_3000.day1    = t->tm_mday / 10;
 566                 tod_3000.day2    = t->tm_mday % 10;
 567                 if (t->tm_wday != -1)
 568                         tod_3000.weekday = t->tm_wday;
 569                 tod_3000.month1  = (t->tm_mon + 1) / 10;
 570                 tod_3000.month2  = (t->tm_mon + 1) % 10;
 571                 if (t->tm_year >= 100)
 572                         t->tm_year -= 100;
 573                 tod_3000.year1   = t->tm_year / 10;
 574                 tod_3000.year2   = t->tm_year % 10;
 575         }
 576
 577         tod_3000.cntrl1 = TOD3000_CNTRL1_FREE;
 578
 579         return 0;
 580 }
 581
 582 static int a2000_hwclk(int op, struct rtc_time *t)
 583 {
 584         int cnt = 5;
 585
 586         tod_2000.cntrl1 = TOD2000_CNTRL1_HOLD;
 587
 588         while ((tod_2000.cntrl1 & TOD2000_CNTRL1_BUSY) && cnt--)
 589         {
 590                 tod_2000.cntrl1 &= ~TOD2000_CNTRL1_HOLD;
 591                 udelay(70);
 592                 tod_2000.cntrl1 |= TOD2000_CNTRL1_HOLD;
 593         }
 594
 595         if (!cnt)
 596                 printk(KERN_INFO "hwclk: timed out waiting for RTC (0x%x)\n", tod_2000.cntrl1);
 597
 598         if (!op) { /* read */
 599                 t->tm_sec  = tod_2000.second1     * 10 + tod_2000.second2;
 600                 t->tm_min  = tod_2000.minute1     * 10 + tod_2000.minute2;
 601                 t->tm_hour = (tod_2000.hour1 & 3) * 10 + tod_2000.hour2;
 602                 t->tm_mday = tod_2000.day1        * 10 + tod_2000.day2;
 603                 t->tm_wday = tod_2000.weekday;
 604                 t->tm_mon  = tod_2000.month1      * 10 + tod_2000.month2 - 1;
 605                 t->tm_year = tod_2000.year1       * 10 + tod_2000.year2;
 606                 if (t->tm_year <= 69)
 607                         t->tm_year += 100;
 608
 609                 if (!(tod_2000.cntrl3 & TOD2000_CNTRL3_24HMODE)){
 610                         if (!(tod_2000.hour1 & TOD2000_HOUR1_PM) && t->tm_hour == 12)
 611                                 t->tm_hour = 0;
 612                         else if ((tod_2000.hour1 & TOD2000_HOUR1_PM) && t->tm_hour != 12)
 613                                 t->tm_hour += 12;
 614                 }
 615         } else {
 616                 tod_2000.second1 = t->tm_sec / 10;
 617                 tod_2000.second2 = t->tm_sec % 10;
 618                 tod_2000.minute1 = t->tm_min / 10;
 619                 tod_2000.minute2 = t->tm_min % 10;
 620                 if (tod_2000.cntrl3 & TOD2000_CNTRL3_24HMODE)
 621                         tod_2000.hour1 = t->tm_hour / 10;
 622                 else if (t->tm_hour >= 12)
 623                         tod_2000.hour1 = TOD2000_HOUR1_PM +
 624                                 (t->tm_hour - 12) / 10;
 625                 else
 626                         tod_2000.hour1 = t->tm_hour / 10;
 627                 tod_2000.hour2   = t->tm_hour % 10;
 628                 tod_2000.day1    = t->tm_mday / 10;
 629                 tod_2000.day2    = t->tm_mday % 10;
 630                 if (t->tm_wday != -1)
 631                         tod_2000.weekday = t->tm_wday;
 632                 tod_2000.month1  = (t->tm_mon + 1) / 10;
 633                 tod_2000.month2  = (t->tm_mon + 1) % 10;
 634                 if (t->tm_year >= 100)
 635                         t->tm_year -= 100;
 636                 tod_2000.year1   = t->tm_year / 10;
 637                 tod_2000.year2   = t->tm_year % 10;
 638         }
 639
 640         tod_2000.cntrl1 &= ~TOD2000_CNTRL1_HOLD;
 641
 642         return 0;
 643 }
 644
 645 static int amiga_set_clock_mmss (unsigned long nowtime)
 646 {
 647         short real_seconds = nowtime % 60, real_minutes = (nowtime / 60) % 60;
 648
 649         if (AMIGAHW_PRESENT(A3000_CLK)) {
 650                 tod_3000.cntrl1 = TOD3000_CNTRL1_HOLD;
 651
 652                 tod_3000.second1 = real_seconds / 10;
 653                 tod_3000.second2 = real_seconds % 10;
 654                 tod_3000.minute1 = real_minutes / 10;
 655                 tod_3000.minute2 = real_minutes % 10;
 656
 657                 tod_3000.cntrl1 = TOD3000_CNTRL1_FREE;
 658         } else /* if (AMIGAHW_PRESENT(A2000_CLK)) */ {
 659                 int cnt = 5;
 660
 661                 tod_2000.cntrl1 |= TOD2000_CNTRL1_HOLD;
 662
 663                 while ((tod_2000.cntrl1 & TOD2000_CNTRL1_BUSY) && cnt--)
 664                 {
 665                         tod_2000.cntrl1 &= ~TOD2000_CNTRL1_HOLD;
 666                         udelay(70);
 667                         tod_2000.cntrl1 |= TOD2000_CNTRL1_HOLD;
 668                 }
 669
 670                 if (!cnt)
 671                         printk(KERN_INFO "set_clock_mmss: timed out waiting for RTC (0x%x)\n", tod_2000.cntrl1);
 672
 673                 tod_2000.second1 = real_seconds / 10;
 674                 tod_2000.second2 = real_seconds % 10;
 675                 tod_2000.minute1 = real_minutes / 10;
 676                 tod_2000.minute2 = real_minutes % 10;
 677
 678                 tod_2000.cntrl1 &= ~TOD2000_CNTRL1_HOLD;
 679         }
 680
 681         return 0;
 682 }
 683
 684 static unsigned int amiga_get_ss( void )
 685 {
 686         unsigned int s;
 687
 688         if (AMIGAHW_PRESENT(A3000_CLK)) {
 689                 tod_3000.cntrl1 = TOD3000_CNTRL1_HOLD;
 690                 s = tod_3000.second1 * 10 + tod_3000.second2;
 691                 tod_3000.cntrl1 = TOD3000_CNTRL1_FREE;
 692         } else /* if (AMIGAHW_PRESENT(A2000_CLK)) */ {
 693                 s = tod_2000.second1 * 10 + tod_2000.second2;
 694         }
 695         return s;
 696 }
 697
 698 static NORET_TYPE void amiga_reset( void )
 699     ATTRIB_NORET;
 700
 701 static void amiga_reset (void)
 702 {
 703   unsigned long jmp_addr040 = virt_to_phys(&&jmp_addr_label040);
 704   unsigned long jmp_addr = virt_to_phys(&&jmp_addr_label);
 705
 706   local_irq_disable();
 707   if (CPU_IS_040_OR_060)
 708     /* Setup transparent translation registers for mapping
 709      * of 16 MB kernel segment before disabling translation
 710      */
 711     __asm__ __volatile__
 712       ("movel    %0,%/d0\n\t"
 713        "andl     #0xff000000,%/d0\n\t"
 714        "orw      #0xe020,%/d0\n\t"   /* map 16 MB, enable, cacheable */
 715        ".chip    68040\n\t"
 716        "movec    %%d0,%%itt0\n\t"
 717        "movec    %%d0,%%dtt0\n\t"
 718        ".chip    68k\n\t"
 719        "jmp      %0@\n\t"
 720        : /* no outputs */
 721        : "a" (jmp_addr040));
 722   else
 723     /* for 680[23]0, just disable translation and jump to the physical
 724      * address of the label
 725      */
 726     __asm__ __volatile__
 727       ("pmove  %/tc,%@\n\t"
 728        "bclr   #7,%@\n\t"
 729        "pmove  %@,%/tc\n\t"
 730        "jmp    %0@\n\t"
 731        : /* no outputs */
 732        : "a" (jmp_addr));
 733  jmp_addr_label040:
 734   /* disable translation on '040 now */
 735   __asm__ __volatile__
 736     ("moveq #0,%/d0\n\t"
 737      ".chip 68040\n\t"
 738      "movec %%d0,%%tc\n\t"      /* disable MMU */
 739      ".chip 68k\n\t"
 740      : /* no outputs */
 741      : /* no inputs */
 742      : "d0");
 743
 744  jmp_addr_label:
 745   /* pickup reset address from AmigaOS ROM, reset devices and jump
 746    * to reset address
 747    */
 748   __asm__ __volatile__
 749     ("movew #0x2700,%/sr\n\t"
 750      "leal  0x01000000,%/a0\n\t"
 751      "subl  %/a0@(-0x14),%/a0\n\t"
 752      "movel %/a0@(4),%/a0\n\t"
 753      "subql #2,%/a0\n\t"
 754      "bra   1f\n\t"
 755      /* align on a longword boundary */
 756      __ALIGN_STR "\n"
 757      "1:\n\t"
 758      "reset\n\t"
 759      "jmp   %/a0@" : /* Just that gcc scans it for % escapes */ );
 760
 761   for (;;);
 762
 763 }
 764
 765
 766     /*
 767      *  Debugging
 768      */
 769
 770 #define SAVEKMSG_MAXMEM         128*1024
 771
 772 #define SAVEKMSG_MAGIC1         0x53415645      /* 'SAVE' */
 773 #define SAVEKMSG_MAGIC2         0x4B4D5347      /* 'KMSG' */
 774
 775 struct savekmsg {
 776     unsigned long magic1;               /* SAVEKMSG_MAGIC1 */
 777     unsigned long magic2;               /* SAVEKMSG_MAGIC2 */
 778     unsigned long magicptr;             /* address of magic1 */
 779     unsigned long size;
 780     char data[0];
 781 };
 782
 783 static struct savekmsg *savekmsg;
 784
 785 static void amiga_mem_console_write(struct console *co, const char *s,
 786                                     unsigned int count)
 787 {
 788     if (savekmsg->size+count <= SAVEKMSG_MAXMEM-sizeof(struct savekmsg)) {
 789         memcpy(savekmsg->data+savekmsg->size, s, count);
 790         savekmsg->size += count;
 791     }
 792 }
 793
 794 static void amiga_savekmsg_init(void)
 795 {
 796     static struct resource debug_res = { .name = "Debug" };
 797
 798     savekmsg = amiga_chip_alloc_res(SAVEKMSG_MAXMEM, &debug_res);
 799     savekmsg->magic1 = SAVEKMSG_MAGIC1;
 800     savekmsg->magic2 = SAVEKMSG_MAGIC2;
 801     savekmsg->magicptr = ZTWO_PADDR(savekmsg);
 802     savekmsg->size = 0;
 803 }
 804
 805 static void amiga_serial_putc(char c)
 806 {
 807     amiga_custom.serdat = (unsigned char)c | 0x100;
 808     while (!(amiga_custom.serdatr & 0x2000))
 809         ;
 810 }
 811
 812 void amiga_serial_console_write(struct console *co, const char *s,
 813                                        unsigned int count)
 814 {
 815     while (count--) {
 816         if (*s == '\n')
 817             amiga_serial_putc('\r');
 818         amiga_serial_putc(*s++);
 819     }
 820 }
 821
 822 #ifdef CONFIG_SERIAL_CONSOLE
 823 void amiga_serial_puts(const char *s)
 824 {
 825     amiga_serial_console_write(NULL, s, strlen(s));
 826 }
 827
 828 int amiga_serial_console_wait_key(struct console *co)
 829 {
 830     int ch;
 831
 832     while (!(amiga_custom.intreqr & IF_RBF))
 833         barrier();
 834     ch = amiga_custom.serdatr & 0xff;
 835     /* clear the interrupt, so that another character can be read */
 836     amiga_custom.intreq = IF_RBF;
 837     return ch;
 838 }
 839
 840 void amiga_serial_gets(struct console *co, char *s, int len)
 841 {
 842     int ch, cnt = 0;
 843
 844     while (1) {
 845         ch = amiga_serial_console_wait_key(co);
 846
 847         /* Check for backspace. */
 848         if (ch == 8 || ch == 127) {
 849             if (cnt == 0) {
 850                 amiga_serial_putc('\007');
 851                 continue;
 852             }
 853             cnt--;
 854             amiga_serial_puts("\010 \010");
 855             continue;
 856         }
 857
 858         /* Check for enter. */
 859         if (ch == 10 || ch == 13)
 860             break;
 861
 862         /* See if line is too long. */
 863         if (cnt >= len + 1) {
 864             amiga_serial_putc(7);
 865             cnt--;
 866             continue;
 867         }
 868
 869         /* Store and echo character. */
 870         s[cnt++] = ch;
 871         amiga_serial_putc(ch);
 872     }
 873     /* Print enter. */
 874     amiga_serial_puts("\r\n");
 875     s[cnt] = 0;
 876 }
 877 #endif
 878
 879 static void __init amiga_debug_init(void)
 880 {
 881         if (!strcmp( m68k_debug_device, "ser" )) {
 882                 /* no initialization required (?) */
 883                 amiga_console_driver.write = amiga_serial_console_write;
 884                 register_console(&amiga_console_driver);
 885         }
 886 }
 887
 888 #ifdef CONFIG_HEARTBEAT
 889 static void amiga_heartbeat(int on)
 890 {
 891     if (on)
 892         ciaa.pra &= ~2;
 893     else
 894         ciaa.pra |= 2;
 895 }
 896 #endif
 897
 898     /*
 899      *  Amiga specific parts of /proc
 900      */
 901
 902 static void amiga_get_model(char *model)
 903 {
 904     strcpy(model, amiga_model_name);
 905 }
 906
 907
 908 static int amiga_get_hardware_list(char *buffer)
 909 {
 910     int len = 0;
 911
 912     if (AMIGAHW_PRESENT(CHIP_RAM))
 913         len += sprintf(buffer+len, "Chip RAM:\t%ldK\n", amiga_chip_size>>10);
 914     len += sprintf(buffer+len, "PS Freq:\t%dHz\nEClock Freq:\t%ldHz\n",
 915                    amiga_psfreq, amiga_eclock);
 916     if (AMIGAHW_PRESENT(AMI_VIDEO)) {
 917         char *type;
 918         switch(amiga_chipset) {
 919             case CS_OCS:
 920                 type = "OCS";
 921                 break;
 922             case CS_ECS:
 923                 type = "ECS";
 924                 break;
 925             case CS_AGA:
 926                 type = "AGA";
 927                 break;
 928             default:
 929                 type = "Old or Unknown";
 930                 break;
 931         }
 932         len += sprintf(buffer+len, "Graphics:\t%s\n", type);
 933     }
 934
 935 #define AMIGAHW_ANNOUNCE(name, str)                     \
 936     if (AMIGAHW_PRESENT(name))                          \
 937         len += sprintf (buffer+len, "\t%s\n", str)
 938
 939     len += sprintf (buffer + len, "Detected hardware:\n");
 940
 941     AMIGAHW_ANNOUNCE(AMI_VIDEO, "Amiga Video");
 942     AMIGAHW_ANNOUNCE(AMI_BLITTER, "Blitter");
 943     AMIGAHW_ANNOUNCE(AMBER_FF, "Amber Flicker Fixer");
 944     AMIGAHW_ANNOUNCE(AMI_AUDIO, "Amiga Audio");
 945     AMIGAHW_ANNOUNCE(AMI_FLOPPY, "Floppy Controller");
 946     AMIGAHW_ANNOUNCE(A3000_SCSI, "SCSI Controller WD33C93 (A3000 style)");
 947     AMIGAHW_ANNOUNCE(A4000_SCSI, "SCSI Controller NCR53C710 (A4000T style)");
 948     AMIGAHW_ANNOUNCE(A1200_IDE, "IDE Interface (A1200 style)");
 949     AMIGAHW_ANNOUNCE(A4000_IDE, "IDE Interface (A4000 style)");
 950     AMIGAHW_ANNOUNCE(CD_ROM, "Internal CD ROM drive");
 951     AMIGAHW_ANNOUNCE(AMI_KEYBOARD, "Keyboard");
 952     AMIGAHW_ANNOUNCE(AMI_MOUSE, "Mouse Port");
 953     AMIGAHW_ANNOUNCE(AMI_SERIAL, "Serial Port");
 954     AMIGAHW_ANNOUNCE(AMI_PARALLEL, "Parallel Port");
 955     AMIGAHW_ANNOUNCE(A2000_CLK, "Hardware Clock (A2000 style)");
 956     AMIGAHW_ANNOUNCE(A3000_CLK, "Hardware Clock (A3000 style)");
 957     AMIGAHW_ANNOUNCE(CHIP_RAM, "Chip RAM");
 958     AMIGAHW_ANNOUNCE(PAULA, "Paula 8364");
 959     AMIGAHW_ANNOUNCE(DENISE, "Denise 8362");
 960     AMIGAHW_ANNOUNCE(DENISE_HR, "Denise 8373");
 961     AMIGAHW_ANNOUNCE(LISA, "Lisa 8375");
 962     AMIGAHW_ANNOUNCE(AGNUS_PAL, "Normal/Fat PAL Agnus 8367/8371");
 963     AMIGAHW_ANNOUNCE(AGNUS_NTSC, "Normal/Fat NTSC Agnus 8361/8370");
 964     AMIGAHW_ANNOUNCE(AGNUS_HR_PAL, "Fat Hires PAL Agnus 8372");
 965     AMIGAHW_ANNOUNCE(AGNUS_HR_NTSC, "Fat Hires NTSC Agnus 8372");
 966     AMIGAHW_ANNOUNCE(ALICE_PAL, "PAL Alice 8374");
 967     AMIGAHW_ANNOUNCE(ALICE_NTSC, "NTSC Alice 8374");
 968     AMIGAHW_ANNOUNCE(MAGIC_REKICK, "Magic Hard Rekick");
 969     AMIGAHW_ANNOUNCE(PCMCIA, "PCMCIA Slot");
 970 #ifdef CONFIG_ZORRO
 971     if (AMIGAHW_PRESENT(ZORRO))
 972         len += sprintf(buffer+len, "\tZorro II%s AutoConfig: %d Expansion "
 973                                    "Device%s\n",
 974                        AMIGAHW_PRESENT(ZORRO3) ? "I" : "",
 975                        zorro_num_autocon, zorro_num_autocon == 1 ? "" : "s");
 976 #endif /* CONFIG_ZORRO */
 977
 978 #undef AMIGAHW_ANNOUNCE
 979
 980     return(len);
 981 }