arch/m68k/mac/misc.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Miscellaneous Mac68K-specific stuff
   4  */
   5
   6 #include <linux/types.h>
   7 #include <linux/errno.h>
   8 #include <linux/kernel.h>
   9 #include <linux/delay.h>
  10 #include <linux/sched.h>
  11 #include <linux/time.h>
  12 #include <linux/rtc.h>
  13 #include <linux/mm.h>
  14
  15 #include <linux/adb.h>
  16 #include <linux/cuda.h>
  17 #include <linux/pmu.h>
  18
  19 #include <linux/uaccess.h>
  20 #include <asm/io.h>
  21 #include <asm/segment.h>
  22 #include <asm/setup.h>
  23 #include <asm/macintosh.h>
  24 #include <asm/mac_via.h>
  25 #include <asm/mac_oss.h>
  26
  27 #include <asm/machdep.h>
  28
  29 /* Offset between Unix time (1970-based) and Mac time (1904-based) */
  30
  31 #define RTC_OFFSET 2082844800
  32
  33 static void (*rom_reset)(void);
  34
  35 #ifdef CONFIG_ADB_CUDA
  36 static long cuda_read_time(void)
  37 {
  38         struct adb_request req;
  39         long time;
  40
  41         if (cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_GET_TIME) < 0)
  42                 return 0;
  43         while (!req.complete)
  44                 cuda_poll();
  45
  46         time = (req.reply[3] << 24) | (req.reply[4] << 16)
  47                 | (req.reply[5] << 8) | req.reply[6];
  48         return time - RTC_OFFSET;
  49 }
  50
  51 static void cuda_write_time(long data)
  52 {
  53         struct adb_request req;
  54         data += RTC_OFFSET;
  55         if (cuda_request(&req, NULL, 6, CUDA_PACKET, CUDA_SET_TIME,
  56                         (data >> 24) & 0xFF, (data >> 16) & 0xFF,
  57                         (data >> 8) & 0xFF, data & 0xFF) < 0)
  58                 return;
  59         while (!req.complete)
  60                 cuda_poll();
  61 }
  62
  63 static __u8 cuda_read_pram(int offset)
  64 {
  65         struct adb_request req;
  66         if (cuda_request(&req, NULL, 4, CUDA_PACKET, CUDA_GET_PRAM,
  67                         (offset >> 8) & 0xFF, offset & 0xFF) < 0)
  68                 return 0;
  69         while (!req.complete)
  70                 cuda_poll();
  71         return req.reply[3];
  72 }
  73
  74 static void cuda_write_pram(int offset, __u8 data)
  75 {
  76         struct adb_request req;
  77         if (cuda_request(&req, NULL, 5, CUDA_PACKET, CUDA_SET_PRAM,
  78                         (offset >> 8) & 0xFF, offset & 0xFF, data) < 0)
  79                 return;
  80         while (!req.complete)
  81                 cuda_poll();
  82 }
  83 #else
  84 #define cuda_read_time() 0
  85 #define cuda_write_time(n)
  86 #define cuda_read_pram NULL
  87 #define cuda_write_pram NULL
  88 #endif
  89
  90 #ifdef CONFIG_ADB_PMU68K
  91 static long pmu_read_time(void)
  92 {
  93         struct adb_request req;
  94         long time;
  95
  96         if (pmu_request(&req, NULL, 1, PMU_READ_RTC) < 0)
  97                 return 0;
  98         while (!req.complete)
  99                 pmu_poll();
 100
 101         time = (req.reply[1] << 24) | (req.reply[2] << 16)
 102                 | (req.reply[3] << 8) | req.reply[4];
 103         return time - RTC_OFFSET;
 104 }
 105
 106 static void pmu_write_time(long data)
 107 {
 108         struct adb_request req;
 109         data += RTC_OFFSET;
 110         if (pmu_request(&req, NULL, 5, PMU_SET_RTC,
 111                         (data >> 24) & 0xFF, (data >> 16) & 0xFF,
 112                         (data >> 8) & 0xFF, data & 0xFF) < 0)
 113                 return;
 114         while (!req.complete)
 115                 pmu_poll();
 116 }
 117
 118 static __u8 pmu_read_pram(int offset)
 119 {
 120         struct adb_request req;
 121         if (pmu_request(&req, NULL, 3, PMU_READ_NVRAM,
 122                         (offset >> 8) & 0xFF, offset & 0xFF) < 0)
 123                 return 0;
 124         while (!req.complete)
 125                 pmu_poll();
 126         return req.reply[3];
 127 }
 128
 129 static void pmu_write_pram(int offset, __u8 data)
 130 {
 131         struct adb_request req;
 132         if (pmu_request(&req, NULL, 4, PMU_WRITE_NVRAM,
 133                         (offset >> 8) & 0xFF, offset & 0xFF, data) < 0)
 134                 return;
 135         while (!req.complete)
 136                 pmu_poll();
 137 }
 138 #else
 139 #define pmu_read_time() 0
 140 #define pmu_write_time(n)
 141 #define pmu_read_pram NULL
 142 #define pmu_write_pram NULL
 143 #endif
 144
 145 /*
 146  * VIA PRAM/RTC access routines
 147  *
 148  * Must be called with interrupts disabled and
 149  * the RTC should be enabled.
 150  */
 151
 152 static __u8 via_pram_readbyte(void)
 153 {
 154         int     i,reg;
 155         __u8    data;
 156
 157         reg = via1[vBufB] & ~VIA1B_vRTCClk;
 158
 159         /* Set the RTC data line to be an input. */
 160
 161         via1[vDirB] &= ~VIA1B_vRTCData;
 162
 163         /* The bits of the byte come out in MSB order */
 164
 165         data = 0;
 166         for (i = 0 ; i < 8 ; i++) {
 167                 via1[vBufB] = reg;
 168                 via1[vBufB] = reg | VIA1B_vRTCClk;
 169                 data = (data << 1) | (via1[vBufB] & VIA1B_vRTCData);
 170         }
 171
 172         /* Return RTC data line to output state */
 173
 174         via1[vDirB] |= VIA1B_vRTCData;
 175
 176         return data;
 177 }
 178
 179 static void via_pram_writebyte(__u8 data)
 180 {
 181         int     i,reg,bit;
 182
 183         reg = via1[vBufB] & ~(VIA1B_vRTCClk | VIA1B_vRTCData);
 184
 185         /* The bits of the byte go in in MSB order */
 186
 187         for (i = 0 ; i < 8 ; i++) {
 188                 bit = data & 0x80? 1 : 0;
 189                 data <<= 1;
 190                 via1[vBufB] = reg | bit;
 191                 via1[vBufB] = reg | bit | VIA1B_vRTCClk;
 192         }
 193 }
 194
 195 /*
 196  * Execute a VIA PRAM/RTC command. For read commands
 197  * data should point to a one-byte buffer for the
 198  * resulting data. For write commands it should point
 199  * to the data byte to for the command.
 200  *
 201  * This function disables all interrupts while running.
 202  */
 203
 204 static void via_pram_command(int command, __u8 *data)
 205 {
 206         unsigned long flags;
 207         int     is_read;
 208
 209         local_irq_save(flags);
 210
 211         /* Enable the RTC and make sure the strobe line is high */
 212
 213         via1[vBufB] = (via1[vBufB] | VIA1B_vRTCClk) & ~VIA1B_vRTCEnb;
 214
 215         if (command & 0xFF00) {         /* extended (two-byte) command */
 216                 via_pram_writebyte((command & 0xFF00) >> 8);
 217                 via_pram_writebyte(command & 0xFF);
 218                 is_read = command & 0x8000;
 219         } else {                        /* one-byte command */
 220                 via_pram_writebyte(command);
 221                 is_read = command & 0x80;
 222         }
 223         if (is_read) {
 224                 *data = via_pram_readbyte();
 225         } else {
 226                 via_pram_writebyte(*data);
 227         }
 228
 229         /* All done, disable the RTC */
 230
 231         via1[vBufB] |= VIA1B_vRTCEnb;
 232
 233         local_irq_restore(flags);
 234 }
 235
 236 static __u8 via_read_pram(int offset)
 237 {
 238         return 0;
 239 }
 240
 241 static void via_write_pram(int offset, __u8 data)
 242 {
 243 }
 244
 245 /*
 246  * Return the current time in seconds since January 1, 1904.
 247  *
 248  * This only works on machines with the VIA-based PRAM/RTC, which
 249  * is basically any machine with Mac II-style ADB.
 250  */
 251
 252 static long via_read_time(void)
 253 {
 254         union {
 255                 __u8 cdata[4];
 256                 long idata;
 257         } result, last_result;
 258         int count = 1;
 259
 260         via_pram_command(0x81, &last_result.cdata[3]);
 261         via_pram_command(0x85, &last_result.cdata[2]);
 262         via_pram_command(0x89, &last_result.cdata[1]);
 263         via_pram_command(0x8D, &last_result.cdata[0]);
 264
 265         /*
 266          * The NetBSD guys say to loop until you get the same reading
 267          * twice in a row.
 268          */
 269
 270         while (1) {
 271                 via_pram_command(0x81, &result.cdata[3]);
 272                 via_pram_command(0x85, &result.cdata[2]);
 273                 via_pram_command(0x89, &result.cdata[1]);
 274                 via_pram_command(0x8D, &result.cdata[0]);
 275
 276                 if (result.idata == last_result.idata)
 277                         return result.idata - RTC_OFFSET;
 278
 279                 if (++count > 10)
 280                         break;
 281
 282                 last_result.idata = result.idata;
 283         }
 284
 285         pr_err("via_read_time: failed to read a stable value; got 0x%08lx then 0x%08lx\n",
 286                last_result.idata, result.idata);
 287
 288         return 0;
 289 }
 290
 291 /*
 292  * Set the current time to a number of seconds since January 1, 1904.
 293  *
 294  * This only works on machines with the VIA-based PRAM/RTC, which
 295  * is basically any machine with Mac II-style ADB.
 296  */
 297
 298 static void via_write_time(long time)
 299 {
 300         union {
 301                 __u8  cdata[4];
 302                 long  idata;
 303         } data;
 304         __u8    temp;
 305
 306         /* Clear the write protect bit */
 307
 308         temp = 0x55;
 309         via_pram_command(0x35, &temp);
 310
 311         data.idata = time + RTC_OFFSET;
 312         via_pram_command(0x01, &data.cdata[3]);
 313         via_pram_command(0x05, &data.cdata[2]);
 314         via_pram_command(0x09, &data.cdata[1]);
 315         via_pram_command(0x0D, &data.cdata[0]);
 316
 317         /* Set the write protect bit */
 318
 319         temp = 0xD5;
 320         via_pram_command(0x35, &temp);
 321 }
 322
 323 static void via_shutdown(void)
 324 {
 325         if (rbv_present) {
 326                 via2[rBufB] &= ~0x04;
 327         } else {
 328                 /* Direction of vDirB is output */
 329                 via2[vDirB] |= 0x04;
 330                 /* Send a value of 0 on that line */
 331                 via2[vBufB] &= ~0x04;
 332                 mdelay(1000);
 333         }
 334 }
 335
 336 /*
 337  * FIXME: not sure how this is supposed to work exactly...
 338  */
 339
 340 static void oss_shutdown(void)
 341 {
 342         oss->rom_ctrl = OSS_POWEROFF;
 343 }
 344
 345 #ifdef CONFIG_ADB_CUDA
 346
 347 static void cuda_restart(void)
 348 {
 349         struct adb_request req;
 350         if (cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_RESET_SYSTEM) < 0)
 351                 return;
 352         while (!req.complete)
 353                 cuda_poll();
 354 }
 355
 356 static void cuda_shutdown(void)
 357 {
 358         struct adb_request req;
 359         if (cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_POWERDOWN) < 0)
 360                 return;
 361
 362         /* Avoid infinite polling loop when PSU is not under Cuda control */
 363         switch (macintosh_config->ident) {
 364         case MAC_MODEL_C660:
 365         case MAC_MODEL_Q605:
 366         case MAC_MODEL_Q605_ACC:
 367         case MAC_MODEL_P475:
 368         case MAC_MODEL_P475F:
 369                 return;
 370         }
 371
 372         while (!req.complete)
 373                 cuda_poll();
 374 }
 375
 376 #endif /* CONFIG_ADB_CUDA */
 377
 378 #ifdef CONFIG_ADB_PMU68K
 379
 380 void pmu_restart(void)
 381 {
 382         struct adb_request req;
 383         if (pmu_request(&req, NULL,
 384                         2, PMU_SET_INTR_MASK, PMU_INT_ADB|PMU_INT_TICK) < 0)
 385                 return;
 386         while (!req.complete)
 387                 pmu_poll();
 388         if (pmu_request(&req, NULL, 1, PMU_RESET) < 0)
 389                 return;
 390         while (!req.complete)
 391                 pmu_poll();
 392 }
 393
 394 void pmu_shutdown(void)
 395 {
 396         struct adb_request req;
 397         if (pmu_request(&req, NULL,
 398                         2, PMU_SET_INTR_MASK, PMU_INT_ADB|PMU_INT_TICK) < 0)
 399                 return;
 400         while (!req.complete)
 401                 pmu_poll();
 402         if (pmu_request(&req, NULL, 5, PMU_SHUTDOWN, 'M', 'A', 'T', 'T') < 0)
 403                 return;
 404         while (!req.complete)
 405                 pmu_poll();
 406 }
 407
 408 #endif
 409
 410 /*
 411  *-------------------------------------------------------------------
 412  * Below this point are the generic routines; they'll dispatch to the
 413  * correct routine for the hardware on which we're running.
 414  *-------------------------------------------------------------------
 415  */
 416
 417 void mac_pram_read(int offset, __u8 *buffer, int len)
 418 {
 419         __u8 (*func)(int);
 420         int i;
 421
 422         switch(macintosh_config->adb_type) {
 423         case MAC_ADB_PB1:
 424         case MAC_ADB_PB2:
 425                 func = pmu_read_pram; break;
 426         case MAC_ADB_EGRET:
 427         case MAC_ADB_CUDA:
 428                 func = cuda_read_pram; break;
 429         default:
 430                 func = via_read_pram;
 431         }
 432         if (!func)
 433                 return;
 434         for (i = 0 ; i < len ; i++) {
 435                 buffer[i] = (*func)(offset++);
 436         }
 437 }
 438
 439 void mac_pram_write(int offset, __u8 *buffer, int len)
 440 {
 441         void (*func)(int, __u8);
 442         int i;
 443
 444         switch(macintosh_config->adb_type) {
 445         case MAC_ADB_PB1:
 446         case MAC_ADB_PB2:
 447                 func = pmu_write_pram; break;
 448         case MAC_ADB_EGRET:
 449         case MAC_ADB_CUDA:
 450                 func = cuda_write_pram; break;
 451         default:
 452                 func = via_write_pram;
 453         }
 454         if (!func)
 455                 return;
 456         for (i = 0 ; i < len ; i++) {
 457                 (*func)(offset++, buffer[i]);
 458         }
 459 }
 460
 461 void mac_poweroff(void)
 462 {
 463         if (oss_present) {
 464                 oss_shutdown();
 465         } else if (macintosh_config->adb_type == MAC_ADB_II) {
 466                 via_shutdown();
 467 #ifdef CONFIG_ADB_CUDA
 468         } else if (macintosh_config->adb_type == MAC_ADB_EGRET ||
 469                    macintosh_config->adb_type == MAC_ADB_CUDA) {
 470                 cuda_shutdown();
 471 #endif
 472 #ifdef CONFIG_ADB_PMU68K
 473         } else if (macintosh_config->adb_type == MAC_ADB_PB1
 474                 || macintosh_config->adb_type == MAC_ADB_PB2) {
 475                 pmu_shutdown();
 476 #endif
 477         }
 478
 479         pr_crit("It is now safe to turn off your Macintosh.\n");
 480         local_irq_disable();
 481         while(1);
 482 }
 483
 484 void mac_reset(void)
 485 {
 486         if (macintosh_config->adb_type == MAC_ADB_II) {
 487                 unsigned long flags;
 488
 489                 /* need ROMBASE in booter */
 490                 /* indeed, plus need to MAP THE ROM !! */
 491
 492                 if (mac_bi_data.rombase == 0)
 493                         mac_bi_data.rombase = 0x40800000;
 494
 495                 /* works on some */
 496                 rom_reset = (void *) (mac_bi_data.rombase + 0xa);
 497
 498                 if (macintosh_config->ident == MAC_MODEL_SE30) {
 499                         /*
 500                          * MSch: Machines known to crash on ROM reset ...
 501                          */
 502                 } else {
 503                         local_irq_save(flags);
 504
 505                         rom_reset();
 506
 507                         local_irq_restore(flags);
 508                 }
 509 #ifdef CONFIG_ADB_CUDA
 510         } else if (macintosh_config->adb_type == MAC_ADB_EGRET ||
 511                    macintosh_config->adb_type == MAC_ADB_CUDA) {
 512                 cuda_restart();
 513 #endif
 514 #ifdef CONFIG_ADB_PMU68K
 515         } else if (macintosh_config->adb_type == MAC_ADB_PB1
 516                 || macintosh_config->adb_type == MAC_ADB_PB2) {
 517                 pmu_restart();
 518 #endif
 519         } else if (CPU_IS_030) {
 520
 521                 /* 030-specific reset routine.  The idea is general, but the
 522                  * specific registers to reset are '030-specific.  Until I
 523                  * have a non-030 machine, I can't test anything else.
 524                  *  -- C. Scott Ananian <cananian@alumni.princeton.edu>
 525                  */
 526
 527                 unsigned long rombase = 0x40000000;
 528
 529                 /* make a 1-to-1 mapping, using the transparent tran. reg. */
 530                 unsigned long virt = (unsigned long) mac_reset;
 531                 unsigned long phys = virt_to_phys(mac_reset);
 532                 unsigned long addr = (phys&0xFF000000)|0x8777;
 533                 unsigned long offset = phys-virt;
 534                 local_irq_disable(); /* lets not screw this up, ok? */
 535                 __asm__ __volatile__(".chip 68030\n\t"
 536                                      "pmove %0,%/tt0\n\t"
 537                                      ".chip 68k"
 538                                      : : "m" (addr));
 539                 /* Now jump to physical address so we can disable MMU */
 540                 __asm__ __volatile__(
 541                     ".chip 68030\n\t"
 542                     "lea %/pc@(1f),%/a0\n\t"
 543                     "addl %0,%/a0\n\t"/* fixup target address and stack ptr */
 544                     "addl %0,%/sp\n\t"
 545                     "pflusha\n\t"
 546                     "jmp %/a0@\n\t" /* jump into physical memory */
 547                     "0:.long 0\n\t" /* a constant zero. */
 548                     /* OK.  Now reset everything and jump to reset vector. */
 549                     "1:\n\t"
 550                     "lea %/pc@(0b),%/a0\n\t"
 551                     "pmove %/a0@, %/tc\n\t" /* disable mmu */
 552                     "pmove %/a0@, %/tt0\n\t" /* disable tt0 */
 553                     "pmove %/a0@, %/tt1\n\t" /* disable tt1 */
 554                     "movel #0, %/a0\n\t"
 555                     "movec %/a0, %/vbr\n\t" /* clear vector base register */
 556                     "movec %/a0, %/cacr\n\t" /* disable caches */
 557                     "movel #0x0808,%/a0\n\t"
 558                     "movec %/a0, %/cacr\n\t" /* flush i&d caches */
 559                     "movew #0x2700,%/sr\n\t" /* set up status register */
 560                     "movel %1@(0x0),%/a0\n\t"/* load interrupt stack pointer */
 561                     "movec %/a0, %/isp\n\t"
 562                     "movel %1@(0x4),%/a0\n\t" /* load reset vector */
 563                     "reset\n\t" /* reset external devices */
 564                     "jmp %/a0@\n\t" /* jump to the reset vector */
 565                     ".chip 68k"
 566                     : : "r" (offset), "a" (rombase) : "a0");
 567         }
 568
 569         /* should never get here */
 570         pr_crit("Restart failed. Please restart manually.\n");
 571         local_irq_disable();
 572         while(1);
 573 }
 574
 575 /*
 576  * This function translates seconds since 1970 into a proper date.
 577  *
 578  * Algorithm cribbed from glibc2.1, __offtime().
 579  */
 580 #define SECS_PER_MINUTE (60)
 581 #define SECS_PER_HOUR  (SECS_PER_MINUTE * 60)
 582 #define SECS_PER_DAY   (SECS_PER_HOUR * 24)
 583
 584 static void unmktime(unsigned long time, long offset,
 585                      int *yearp, int *monp, int *dayp,
 586                      int *hourp, int *minp, int *secp)
 587 {
 588         /* How many days come before each month (0-12).  */
 589         static const unsigned short int __mon_yday[2][13] =
 590         {
 591                 /* Normal years.  */
 592                 { 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365 },
 593                 /* Leap years.  */
 594                 { 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366 }
 595         };
 596         long int days, rem, y, wday, yday;
 597         const unsigned short int *ip;
 598
 599         days = time / SECS_PER_DAY;
 600         rem = time % SECS_PER_DAY;
 601         rem += offset;
 602         while (rem < 0) {
 603                 rem += SECS_PER_DAY;
 604                 --days;
 605         }
 606         while (rem >= SECS_PER_DAY) {
 607                 rem -= SECS_PER_DAY;
 608                 ++days;
 609         }
 610         *hourp = rem / SECS_PER_HOUR;
 611         rem %= SECS_PER_HOUR;
 612         *minp = rem / SECS_PER_MINUTE;
 613         *secp = rem % SECS_PER_MINUTE;
 614         /* January 1, 1970 was a Thursday. */
 615         wday = (4 + days) % 7; /* Day in the week. Not currently used */
 616         if (wday < 0) wday += 7;
 617         y = 1970;
 618
 619 #define DIV(a, b) ((a) / (b) - ((a) % (b) < 0))
 620 #define LEAPS_THRU_END_OF(y) (DIV (y, 4) - DIV (y, 100) + DIV (y, 400))
 621 #define __isleap(year)  \
 622   ((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0))
 623
 624         while (days < 0 || days >= (__isleap (y) ? 366 : 365))
 625         {
 626                 /* Guess a corrected year, assuming 365 days per year.  */
 627                 long int yg = y + days / 365 - (days % 365 < 0);
 628
 629                 /* Adjust DAYS and Y to match the guessed year.  */
 630                 days -= ((yg - y) * 365
 631                          + LEAPS_THRU_END_OF (yg - 1)
 632                          - LEAPS_THRU_END_OF (y - 1));
 633                 y = yg;
 634         }
 635         *yearp = y - 1900;
 636         yday = days; /* day in the year.  Not currently used. */
 637         ip = __mon_yday[__isleap(y)];
 638         for (y = 11; days < (long int) ip[y]; --y)
 639                 continue;
 640         days -= ip[y];
 641         *monp = y;
 642         *dayp = days + 1; /* day in the month */
 643         return;
 644 }
 645
 646 /*
 647  * Read/write the hardware clock.
 648  */
 649
 650 int mac_hwclk(int op, struct rtc_time *t)
 651 {
 652         unsigned long now;
 653
 654         if (!op) { /* read */
 655                 switch (macintosh_config->adb_type) {
 656                 case MAC_ADB_II:
 657                 case MAC_ADB_IOP:
 658                         now = via_read_time();
 659                         break;
 660                 case MAC_ADB_PB1:
 661                 case MAC_ADB_PB2:
 662                         now = pmu_read_time();
 663                         break;
 664                 case MAC_ADB_EGRET:
 665                 case MAC_ADB_CUDA:
 666                         now = cuda_read_time();
 667                         break;
 668                 default:
 669                         now = 0;
 670                 }
 671
 672                 t->tm_wday = 0;
 673                 unmktime(now, 0,
 674                          &t->tm_year, &t->tm_mon, &t->tm_mday,
 675                          &t->tm_hour, &t->tm_min, &t->tm_sec);
 676                 pr_debug("%s: read %04d-%02d-%-2d %02d:%02d:%02d\n",
 677                          __func__, t->tm_year + 1900, t->tm_mon + 1, t->tm_mday,
 678                          t->tm_hour, t->tm_min, t->tm_sec);
 679         } else { /* write */
 680                 pr_debug("%s: tried to write %04d-%02d-%-2d %02d:%02d:%02d\n",
 681                          __func__, t->tm_year + 1900, t->tm_mon + 1, t->tm_mday,
 682                          t->tm_hour, t->tm_min, t->tm_sec);
 683
 684                 now = mktime(t->tm_year + 1900, t->tm_mon + 1, t->tm_mday,
 685                              t->tm_hour, t->tm_min, t->tm_sec);
 686
 687                 switch (macintosh_config->adb_type) {
 688                 case MAC_ADB_II:
 689                 case MAC_ADB_IOP:
 690                         via_write_time(now);
 691                         break;
 692                 case MAC_ADB_EGRET:
 693                 case MAC_ADB_CUDA:
 694                         cuda_write_time(now);
 695                         break;
 696                 case MAC_ADB_PB1:
 697                 case MAC_ADB_PB2:
 698                         pmu_write_time(now);
 699                         break;
 700                 }
 701         }
 702         return 0;
 703 }
 704
 705 /*
 706  * Set minutes/seconds in the hardware clock
 707  */
 708
 709 int mac_set_clock_mmss (unsigned long nowtime)
 710 {
 711         struct rtc_time now;
 712
 713         mac_hwclk(0, &now);
 714         now.tm_sec = nowtime % 60;
 715         now.tm_min = (nowtime / 60) % 60;
 716         mac_hwclk(1, &now);
 717
 718         return 0;
 719 }