arch/m68k/atari/config.c

   1 /*
   2  *  linux/arch/m68k/atari/config.c
   3  *
   4  *  Copyright (C) 1994 Bjoern Brauel
   5  *
   6  *  5/2/94 Roman Hodek:
   7  *    Added setting of time_adj to get a better clock.
   8  *
   9  *  5/14/94 Roman Hodek:
  10  *    gettod() for TT
  11  *
  12  *  5/15/94 Roman Hodek:
  13  *    hard_reset_now() for Atari (and others?)
  14  *
  15  *  94/12/30 Andreas Schwab:
  16  *    atari_sched_init fixed to get precise clock.
  17  *
  18  * This file is subject to the terms and conditions of the GNU General Public
  19  * License.  See the file COPYING in the main directory of this archive
  20  * for more details.
  21  */
  22
  23 /*
  24  * Miscellaneous atari stuff
  25  */
  26
  27 #include <linux/types.h>
  28 #include <linux/mm.h>
  29 #include <linux/seq_file.h>
  30 #include <linux/console.h>
  31 #include <linux/init.h>
  32 #include <linux/delay.h>
  33 #include <linux/ioport.h>
  34 #include <linux/platform_device.h>
  35 #include <linux/usb/isp116x.h>
  36 #include <linux/vt_kern.h>
  37 #include <linux/module.h>
  38
  39 #include <asm/bootinfo.h>
  40 #include <asm/bootinfo-atari.h>
  41 #include <asm/byteorder.h>
  42 #include <asm/setup.h>
  43 #include <asm/atarihw.h>
  44 #include <asm/atariints.h>
  45 #include <asm/atari_stram.h>
  46 #include <asm/machdep.h>
  47 #include <asm/hwtest.h>
  48 #include <asm/io.h>
  49
  50 u_long atari_mch_cookie;
  51 EXPORT_SYMBOL(atari_mch_cookie);
  52
  53 u_long atari_mch_type;
  54 EXPORT_SYMBOL(atari_mch_type);
  55
  56 struct atari_hw_present atari_hw_present;
  57 EXPORT_SYMBOL(atari_hw_present);
  58
  59 u_long atari_switches;
  60 EXPORT_SYMBOL(atari_switches);
  61
  62 int atari_dont_touch_floppy_select;
  63 EXPORT_SYMBOL(atari_dont_touch_floppy_select);
  64
  65 int atari_rtc_year_offset;
  66
  67 /* local function prototypes */
  68 static void atari_reset(void);
  69 static void atari_get_model(char *model);
  70 static void atari_get_hardware_list(struct seq_file *m);
  71
  72 /* atari specific irq functions */
  73 extern void atari_init_IRQ (void);
  74 extern void atari_mksound(unsigned int count, unsigned int ticks);
  75 #ifdef CONFIG_HEARTBEAT
  76 static void atari_heartbeat(int on);
  77 #endif
  78
  79 /* atari specific timer functions (in time.c) */
  80 extern void atari_sched_init(void);
  81 extern int atari_mste_hwclk (int, struct rtc_time *);
  82 extern int atari_tt_hwclk (int, struct rtc_time *);
  83
  84 /* ++roman: This is a more elaborate test for an SCC chip, since the plain
  85  * Medusa board generates DTACK at the SCC's standard addresses, but a SCC
  86  * board in the Medusa is possible. Also, the addresses where the ST_ESCC
  87  * resides generate DTACK without the chip, too.
  88  * The method is to write values into the interrupt vector register, that
  89  * should be readable without trouble (from channel A!).
  90  */
  91
  92 static int __init scc_test(volatile char *ctla)
  93 {
  94         if (!hwreg_present(ctla))
  95                 return 0;
  96         MFPDELAY();
  97
  98         *ctla = 2;
  99         MFPDELAY();
 100         *ctla = 0x40;
 101         MFPDELAY();
 102
 103         *ctla = 2;
 104         MFPDELAY();
 105         if (*ctla != 0x40)
 106                 return 0;
 107         MFPDELAY();
 108
 109         *ctla = 2;
 110         MFPDELAY();
 111         *ctla = 0x60;
 112         MFPDELAY();
 113
 114         *ctla = 2;
 115         MFPDELAY();
 116         if (*ctla != 0x60)
 117                 return 0;
 118
 119         return 1;
 120 }
 121
 122
 123     /*
 124      *  Parse an Atari-specific record in the bootinfo
 125      */
 126
 127 int __init atari_parse_bootinfo(const struct bi_record *record)
 128 {
 129         int unknown = 0;
 130         const void *data = record->data;
 131
 132         switch (be16_to_cpu(record->tag)) {
 133         case BI_ATARI_MCH_COOKIE:
 134                 atari_mch_cookie = be32_to_cpup(data);
 135                 break;
 136         case BI_ATARI_MCH_TYPE:
 137                 atari_mch_type = be32_to_cpup(data);
 138                 break;
 139         default:
 140                 unknown = 1;
 141                 break;
 142         }
 143         return unknown;
 144 }
 145
 146
 147 /* Parse the Atari-specific switches= option. */
 148 static int __init atari_switches_setup(char *str)
 149 {
 150         char switches[COMMAND_LINE_SIZE];
 151         char *p;
 152         int ovsc_shift;
 153         char *args = switches;
 154
 155         if (!MACH_IS_ATARI)
 156                 return 0;
 157
 158         /* copy string to local array, strsep works destructively... */
 159         strcpy(switches, str);
 160         atari_switches = 0;
 161
 162         /* parse the options */
 163         while ((p = strsep(&args, ",")) != NULL) {
 164                 if (!*p)
 165                         continue;
 166                 ovsc_shift = 0;
 167                 if (strncmp(p, "ov_", 3) == 0) {
 168                         p += 3;
 169                         ovsc_shift = ATARI_SWITCH_OVSC_SHIFT;
 170                 }
 171
 172                 if (strcmp(p, "ikbd") == 0) {
 173                         /* RTS line of IKBD ACIA */
 174                         atari_switches |= ATARI_SWITCH_IKBD << ovsc_shift;
 175                 } else if (strcmp(p, "midi") == 0) {
 176                         /* RTS line of MIDI ACIA */
 177                         atari_switches |= ATARI_SWITCH_MIDI << ovsc_shift;
 178                 } else if (strcmp(p, "snd6") == 0) {
 179                         atari_switches |= ATARI_SWITCH_SND6 << ovsc_shift;
 180                 } else if (strcmp(p, "snd7") == 0) {
 181                         atari_switches |= ATARI_SWITCH_SND7 << ovsc_shift;
 182                 }
 183         }
 184         return 0;
 185 }
 186
 187 early_param("switches", atari_switches_setup);
 188
 189
 190     /*
 191      *  Setup the Atari configuration info
 192      */
 193
 194 void __init config_atari(void)
 195 {
 196         unsigned short tos_version;
 197
 198         memset(&atari_hw_present, 0, sizeof(atari_hw_present));
 199
 200         /* Change size of I/O space from 64KB to 4GB. */
 201         ioport_resource.end  = 0xFFFFFFFF;
 202
 203         mach_sched_init      = atari_sched_init;
 204         mach_init_IRQ        = atari_init_IRQ;
 205         mach_get_model   = atari_get_model;
 206         mach_get_hardware_list = atari_get_hardware_list;
 207         mach_reset           = atari_reset;
 208 #if IS_ENABLED(CONFIG_INPUT_M68K_BEEP)
 209         mach_beep          = atari_mksound;
 210 #endif
 211 #ifdef CONFIG_HEARTBEAT
 212         mach_heartbeat = atari_heartbeat;
 213 #endif
 214
 215         /* Set switches as requested by the user */
 216         if (atari_switches & ATARI_SWITCH_IKBD)
 217                 acia.key_ctrl = ACIA_DIV64 | ACIA_D8N1S | ACIA_RHTID;
 218         if (atari_switches & ATARI_SWITCH_MIDI)
 219                 acia.mid_ctrl = ACIA_DIV16 | ACIA_D8N1S | ACIA_RHTID;
 220         if (atari_switches & (ATARI_SWITCH_SND6|ATARI_SWITCH_SND7)) {
 221                 sound_ym.rd_data_reg_sel = 14;
 222                 sound_ym.wd_data = sound_ym.rd_data_reg_sel |
 223                                    ((atari_switches&ATARI_SWITCH_SND6) ? 0x40 : 0) |
 224                                    ((atari_switches&ATARI_SWITCH_SND7) ? 0x80 : 0);
 225         }
 226
 227         /* ++bjoern:
 228          * Determine hardware present
 229          */
 230
 231         pr_info("Atari hardware found:");
 232         if (MACH_IS_MEDUSA) {
 233                 /* There's no Atari video hardware on the Medusa, but all the
 234                  * addresses below generate a DTACK so no bus error occurs! */
 235         } else if (hwreg_present(f030_xreg)) {
 236                 ATARIHW_SET(VIDEL_SHIFTER);
 237                 pr_cont(" VIDEL");
 238                 /* This is a temporary hack: If there is Falcon video
 239                  * hardware, we assume that the ST-DMA serves SCSI instead of
 240                  * ACSI. In the future, there should be a better method for
 241                  * this...
 242                  */
 243                 ATARIHW_SET(ST_SCSI);
 244                 pr_cont(" STDMA-SCSI");
 245         } else if (hwreg_present(tt_palette)) {
 246                 ATARIHW_SET(TT_SHIFTER);
 247                 pr_cont(" TT_SHIFTER");
 248         } else if (hwreg_present(&shifter_st.bas_hi)) {
 249                 if (hwreg_present(&shifter_st.bas_lo) &&
 250                     (shifter_st.bas_lo = 0x0aau, shifter_st.bas_lo == 0x0aau)) {
 251                         ATARIHW_SET(EXTD_SHIFTER);
 252                         pr_cont(" EXTD_SHIFTER");
 253                 } else {
 254                         ATARIHW_SET(STND_SHIFTER);
 255                         pr_cont(" STND_SHIFTER");
 256                 }
 257         }
 258         if (hwreg_present(&st_mfp.par_dt_reg)) {
 259                 ATARIHW_SET(ST_MFP);
 260                 pr_cont(" ST_MFP");
 261         }
 262         if (hwreg_present(&tt_mfp.par_dt_reg)) {
 263                 ATARIHW_SET(TT_MFP);
 264                 pr_cont(" TT_MFP");
 265         }
 266         if (hwreg_present(&tt_scsi_dma.dma_addr_hi)) {
 267                 ATARIHW_SET(SCSI_DMA);
 268                 pr_cont(" TT_SCSI_DMA");
 269         }
 270         /*
 271          * The ST-DMA address registers aren't readable
 272          * on all Medusas, so the test below may fail
 273          */
 274         if (MACH_IS_MEDUSA ||
 275             (hwreg_present(&st_dma.dma_vhi) &&
 276              (st_dma.dma_vhi = 0x55) && (st_dma.dma_hi = 0xaa) &&
 277              st_dma.dma_vhi == 0x55 && st_dma.dma_hi == 0xaa &&
 278              (st_dma.dma_vhi = 0xaa) && (st_dma.dma_hi = 0x55) &&
 279              st_dma.dma_vhi == 0xaa && st_dma.dma_hi == 0x55)) {
 280                 ATARIHW_SET(EXTD_DMA);
 281                 pr_cont(" EXTD_DMA");
 282         }
 283         if (hwreg_present(&tt_scsi.scsi_data)) {
 284                 ATARIHW_SET(TT_SCSI);
 285                 pr_cont(" TT_SCSI");
 286         }
 287         if (hwreg_present(&sound_ym.rd_data_reg_sel)) {
 288                 ATARIHW_SET(YM_2149);
 289                 pr_cont(" YM2149");
 290         }
 291         if (!MACH_IS_MEDUSA && hwreg_present(&tt_dmasnd.ctrl)) {
 292                 ATARIHW_SET(PCM_8BIT);
 293                 pr_cont(" PCM");
 294         }
 295         if (hwreg_present(&falcon_codec.unused5)) {
 296                 ATARIHW_SET(CODEC);
 297                 pr_cont(" CODEC");
 298         }
 299         if (hwreg_present(&dsp56k_host_interface.icr)) {
 300                 ATARIHW_SET(DSP56K);
 301                 pr_cont(" DSP56K");
 302         }
 303         if (hwreg_present(&tt_scc_dma.dma_ctrl) &&
 304 #if 0
 305             /* This test sucks! Who knows some better? */
 306             (tt_scc_dma.dma_ctrl = 0x01, (tt_scc_dma.dma_ctrl & 1) == 1) &&
 307             (tt_scc_dma.dma_ctrl = 0x00, (tt_scc_dma.dma_ctrl & 1) == 0)
 308 #else
 309             !MACH_IS_MEDUSA
 310 #endif
 311             ) {
 312                 ATARIHW_SET(SCC_DMA);
 313                 pr_cont(" SCC_DMA");
 314         }
 315         if (scc_test(&atari_scc.cha_a_ctrl)) {
 316                 ATARIHW_SET(SCC);
 317                 pr_cont(" SCC");
 318         }
 319         if (scc_test(&st_escc.cha_b_ctrl)) {
 320                 ATARIHW_SET(ST_ESCC);
 321                 pr_cont(" ST_ESCC");
 322         }
 323         if (hwreg_present(&tt_scu.sys_mask)) {
 324                 ATARIHW_SET(SCU);
 325                 /* Assume a VME bus if there's a SCU */
 326                 ATARIHW_SET(VME);
 327                 pr_cont(" VME SCU");
 328         }
 329         if (hwreg_present((void *)(0xffff9210))) {
 330                 ATARIHW_SET(ANALOG_JOY);
 331                 pr_cont(" ANALOG_JOY");
 332         }
 333         if (hwreg_present(blitter.halftone)) {
 334                 ATARIHW_SET(BLITTER);
 335                 pr_cont(" BLITTER");
 336         }
 337         if (hwreg_present((void *)0xfff00039)) {
 338                 ATARIHW_SET(IDE);
 339                 pr_cont(" IDE");
 340         }
 341 #if 1 /* This maybe wrong */
 342         if (!MACH_IS_MEDUSA && hwreg_present(&tt_microwire.data) &&
 343             hwreg_present(&tt_microwire.mask) &&
 344             (tt_microwire.mask = 0x7ff,
 345              udelay(1),
 346              tt_microwire.data = MW_LM1992_PSG_HIGH | MW_LM1992_ADDR,
 347              udelay(1),
 348              tt_microwire.data != 0)) {
 349                 ATARIHW_SET(MICROWIRE);
 350                 while (tt_microwire.mask != 0x7ff)
 351                         ;
 352                 pr_cont(" MICROWIRE");
 353         }
 354 #endif
 355         if (hwreg_present(&tt_rtc.regsel)) {
 356                 ATARIHW_SET(TT_CLK);
 357                 pr_cont(" TT_CLK");
 358                 mach_hwclk = atari_tt_hwclk;
 359         }
 360         if (hwreg_present(&mste_rtc.sec_ones)) {
 361                 ATARIHW_SET(MSTE_CLK);
 362                 pr_cont(" MSTE_CLK");
 363                 mach_hwclk = atari_mste_hwclk;
 364         }
 365         if (!MACH_IS_MEDUSA && hwreg_present(&dma_wd.fdc_speed) &&
 366             hwreg_write(&dma_wd.fdc_speed, 0)) {
 367                 ATARIHW_SET(FDCSPEED);
 368                 pr_cont(" FDC_SPEED");
 369         }
 370         if (!ATARIHW_PRESENT(ST_SCSI)) {
 371                 ATARIHW_SET(ACSI);
 372                 pr_cont(" ACSI");
 373         }
 374         pr_cont("\n");
 375
 376         if (CPU_IS_040_OR_060)
 377                 /* Now it seems to be safe to turn of the tt0 transparent
 378                  * translation (the one that must not be turned off in
 379                  * head.S...)
 380                  */
 381                 asm volatile ("\n"
 382                         "       moveq   #0,%%d0\n"
 383                         "       .chip   68040\n"
 384                         "       movec   %%d0,%%itt0\n"
 385                         "       movec   %%d0,%%dtt0\n"
 386                         "       .chip   68k"
 387                         : /* no outputs */
 388                         : /* no inputs */
 389                         : "d0");
 390
 391         /* allocator for memory that must reside in st-ram */
 392         atari_stram_init();
 393
 394         /* Set up a mapping for the VMEbus address region:
 395          *
 396          * VME is either at phys. 0xfexxxxxx (TT) or 0xa00000..0xdfffff
 397          * (MegaSTE) In both cases, the whole 16 MB chunk is mapped at
 398          * 0xfe000000 virt., because this can be done with a single
 399          * transparent translation. On the 68040, lots of often unused
 400          * page tables would be needed otherwise. On a MegaSTE or similar,
 401          * the highest byte is stripped off by hardware due to the 24 bit
 402          * design of the bus.
 403          */
 404
 405         if (CPU_IS_020_OR_030) {
 406                 unsigned long tt1_val;
 407                 tt1_val = 0xfe008543;   /* Translate 0xfexxxxxx, enable, cache
 408                                          * inhibit, read and write, FDC mask = 3,
 409                                          * FDC val = 4 -> Supervisor only */
 410                 asm volatile ("\n"
 411                         "       .chip   68030\n"
 412                         "       pmove   %0,%/tt1\n"
 413                         "       .chip   68k"
 414                         : : "m" (tt1_val));
 415         } else {
 416                 asm volatile ("\n"
 417                         "       .chip   68040\n"
 418                         "       movec   %0,%%itt1\n"
 419                         "       movec   %0,%%dtt1\n"
 420                         "       .chip   68k"
 421                         :
 422                         : "d" (0xfe00a040));    /* Translate 0xfexxxxxx, enable,
 423                                                  * supervisor only, non-cacheable/
 424                                                  * serialized, writable */
 425
 426         }
 427
 428         /* Fetch tos version at Physical 2 */
 429         /*
 430          * We my not be able to access this address if the kernel is
 431          * loaded to st ram, since the first page is unmapped.  On the
 432          * Medusa this is always the case and there is nothing we can do
 433          * about this, so we just assume the smaller offset.  For the TT
 434          * we use the fact that in head.S we have set up a mapping
 435          * 0xFFxxxxxx -> 0x00xxxxxx, so that the first 16MB is accessible
 436          * in the last 16MB of the address space.
 437          */
 438         tos_version = (MACH_IS_MEDUSA) ?
 439                         0xfff : *(unsigned short *)0xff000002;
 440         atari_rtc_year_offset = (tos_version < 0x306) ? 70 : 68;
 441 }
 442
 443 #ifdef CONFIG_HEARTBEAT
 444 static void atari_heartbeat(int on)
 445 {
 446         unsigned char tmp;
 447         unsigned long flags;
 448
 449         if (atari_dont_touch_floppy_select)
 450                 return;
 451
 452         local_irq_save(flags);
 453         sound_ym.rd_data_reg_sel = 14;  /* Select PSG Port A */
 454         tmp = sound_ym.rd_data_reg_sel;
 455         sound_ym.wd_data = on ? (tmp & ~0x02) : (tmp | 0x02);
 456         local_irq_restore(flags);
 457 }
 458 #endif
 459
 460 /* ++roman:
 461  *
 462  * This function does a reset on machines that lack the ability to
 463  * assert the processor's _RESET signal somehow via hardware. It is
 464  * based on the fact that you can find the initial SP and PC values
 465  * after a reset at physical addresses 0 and 4. This works pretty well
 466  * for Atari machines, since the lowest 8 bytes of physical memory are
 467  * really ROM (mapped by hardware). For other 680x0 machines: don't
 468  * know if it works...
 469  *
 470  * To get the values at addresses 0 and 4, the MMU better is turned
 471  * off first. After that, we have to jump into physical address space
 472  * (the PC before the pmove statement points to the virtual address of
 473  * the code). Getting that physical address is not hard, but the code
 474  * becomes a bit complex since I've tried to ensure that the jump
 475  * statement after the pmove is in the cache already (otherwise the
 476  * processor can't fetch it!). For that, the code first jumps to the
 477  * jump statement with the (virtual) address of the pmove section in
 478  * an address register . The jump statement is surely in the cache
 479  * now. After that, that physical address of the reset code is loaded
 480  * into the same address register, pmove is done and the same jump
 481  * statements goes to the reset code. Since there are not many
 482  * statements between the two jumps, I hope it stays in the cache.
 483  *
 484  * The C code makes heavy use of the GCC features that you can get the
 485  * address of a C label. No hope to compile this with another compiler
 486  * than GCC!
 487  */
 488
 489 /* ++andreas: no need for complicated code, just depend on prefetch */
 490
 491 static void atari_reset(void)
 492 {
 493         long tc_val = 0;
 494         long reset_addr;
 495
 496         /*
 497          * On the Medusa, phys. 0x4 may contain garbage because it's no
 498          * ROM.  See above for explanation why we cannot use PTOV(4).
 499          */
 500         reset_addr = MACH_IS_MEDUSA || MACH_IS_AB40 ? 0xe00030 :
 501                      *(unsigned long *) 0xff000004;
 502
 503         /* reset ACIA for switch off OverScan, if it's active */
 504         if (atari_switches & ATARI_SWITCH_OVSC_IKBD)
 505                 acia.key_ctrl = ACIA_RESET;
 506         if (atari_switches & ATARI_SWITCH_OVSC_MIDI)
 507                 acia.mid_ctrl = ACIA_RESET;
 508
 509         /* processor independent: turn off interrupts and reset the VBR;
 510          * the caches must be left enabled, else prefetching the final jump
 511          * instruction doesn't work.
 512          */
 513         local_irq_disable();
 514         asm volatile ("movec    %0,%%vbr"
 515                         : : "d" (0));
 516
 517         if (CPU_IS_040_OR_060) {
 518                 unsigned long jmp_addr040 = virt_to_phys(&&jmp_addr_label040);
 519                 if (CPU_IS_060) {
 520                         /* 68060: clear PCR to turn off superscalar operation */
 521                         asm volatile ("\n"
 522                                 "       .chip 68060\n"
 523                                 "       movec %0,%%pcr\n"
 524                                 "       .chip 68k"
 525                                 : : "d" (0));
 526                 }
 527
 528                 asm volatile ("\n"
 529                         "       move.l  %0,%%d0\n"
 530                         "       and.l   #0xff000000,%%d0\n"
 531                         "       or.w    #0xe020,%%d0\n"   /* map 16 MB, enable, cacheable */
 532                         "       .chip   68040\n"
 533                         "       movec   %%d0,%%itt0\n"
 534                         "       movec   %%d0,%%dtt0\n"
 535                         "       .chip   68k\n"
 536                         "       jmp     %0@"
 537                         : : "a" (jmp_addr040)
 538                         : "d0");
 539         jmp_addr_label040:
 540                 asm volatile ("\n"
 541                         "       moveq   #0,%%d0\n"
 542                         "       nop\n"
 543                         "       .chip   68040\n"
 544                         "       cinva   %%bc\n"
 545                         "       nop\n"
 546                         "       pflusha\n"
 547                         "       nop\n"
 548                         "       movec   %%d0,%%tc\n"
 549                         "       nop\n"
 550                         /* the following setup of transparent translations is needed on the
 551                          * Afterburner040 to successfully reboot. Other machines shouldn't
 552                          * care about a different tt regs setup, they also didn't care in
 553                          * the past that the regs weren't turned off. */
 554                         "       move.l  #0xffc000,%%d0\n" /* whole insn space cacheable */
 555                         "       movec   %%d0,%%itt0\n"
 556                         "       movec   %%d0,%%itt1\n"
 557                         "       or.w    #0x40,%/d0\n" /* whole data space non-cacheable/ser. */
 558                         "       movec   %%d0,%%dtt0\n"
 559                         "       movec   %%d0,%%dtt1\n"
 560                         "       .chip   68k\n"
 561                         "       jmp     %0@"
 562                         : /* no outputs */
 563                         : "a" (reset_addr)
 564                         : "d0");
 565         } else
 566                 asm volatile ("\n"
 567                         "       pmove   %0,%%tc\n"
 568                         "       jmp     %1@"
 569                         : /* no outputs */
 570                         : "m" (tc_val), "a" (reset_addr));
 571 }
 572
 573
 574 static void atari_get_model(char *model)
 575 {
 576         strcpy(model, "Atari ");
 577         switch (atari_mch_cookie >> 16) {
 578         case ATARI_MCH_ST:
 579                 if (ATARIHW_PRESENT(MSTE_CLK))
 580                         strcat(model, "Mega ST");
 581                 else
 582                         strcat(model, "ST");
 583                 break;
 584         case ATARI_MCH_STE:
 585                 if (MACH_IS_MSTE)
 586                         strcat(model, "Mega STE");
 587                 else
 588                         strcat(model, "STE");
 589                 break;
 590         case ATARI_MCH_TT:
 591                 if (MACH_IS_MEDUSA)
 592                         /* Medusa has TT _MCH cookie */
 593                         strcat(model, "Medusa");
 594                 else
 595                         strcat(model, "TT");
 596                 break;
 597         case ATARI_MCH_FALCON:
 598                 strcat(model, "Falcon");
 599                 if (MACH_IS_AB40)
 600                         strcat(model, " (with Afterburner040)");
 601                 break;
 602         default:
 603                 sprintf(model + strlen(model), "(unknown mach cookie 0x%lx)",
 604                         atari_mch_cookie);
 605                 break;
 606         }
 607 }
 608
 609
 610 static void atari_get_hardware_list(struct seq_file *m)
 611 {
 612         int i;
 613
 614         for (i = 0; i < m68k_num_memory; i++)
 615                 seq_printf(m, "\t%3ld MB at 0x%08lx (%s)\n",
 616                                 m68k_memory[i].size >> 20, m68k_memory[i].addr,
 617                                 (m68k_memory[i].addr & 0xff000000 ?
 618                                  "alternate RAM" : "ST-RAM"));
 619
 620 #define ATARIHW_ANNOUNCE(name, str)                     \
 621         if (ATARIHW_PRESENT(name))                      \
 622                 seq_printf(m, "\t%s\n", str)
 623
 624         seq_puts(m, "Detected hardware:\n");
 625         ATARIHW_ANNOUNCE(STND_SHIFTER, "ST Shifter");
 626         ATARIHW_ANNOUNCE(EXTD_SHIFTER, "STe Shifter");
 627         ATARIHW_ANNOUNCE(TT_SHIFTER, "TT Shifter");
 628         ATARIHW_ANNOUNCE(VIDEL_SHIFTER, "Falcon Shifter");
 629         ATARIHW_ANNOUNCE(YM_2149, "Programmable Sound Generator");
 630         ATARIHW_ANNOUNCE(PCM_8BIT, "PCM 8 Bit Sound");
 631         ATARIHW_ANNOUNCE(CODEC, "CODEC Sound");
 632         ATARIHW_ANNOUNCE(TT_SCSI, "SCSI Controller NCR5380 (TT style)");
 633         ATARIHW_ANNOUNCE(ST_SCSI, "SCSI Controller NCR5380 (Falcon style)");
 634         ATARIHW_ANNOUNCE(ACSI, "ACSI Interface");
 635         ATARIHW_ANNOUNCE(IDE, "IDE Interface");
 636         ATARIHW_ANNOUNCE(FDCSPEED, "8/16 Mhz Switch for FDC");
 637         ATARIHW_ANNOUNCE(ST_MFP, "Multi Function Peripheral MFP 68901");
 638         ATARIHW_ANNOUNCE(TT_MFP, "Second Multi Function Peripheral MFP 68901");
 639         ATARIHW_ANNOUNCE(SCC, "Serial Communications Controller SCC 8530");
 640         ATARIHW_ANNOUNCE(ST_ESCC, "Extended Serial Communications Controller SCC 85230");
 641         ATARIHW_ANNOUNCE(ANALOG_JOY, "Paddle Interface");
 642         ATARIHW_ANNOUNCE(MICROWIRE, "MICROWIRE(tm) Interface");
 643         ATARIHW_ANNOUNCE(STND_DMA, "DMA Controller (24 bit)");
 644         ATARIHW_ANNOUNCE(EXTD_DMA, "DMA Controller (32 bit)");
 645         ATARIHW_ANNOUNCE(SCSI_DMA, "DMA Controller for NCR5380");
 646         ATARIHW_ANNOUNCE(SCC_DMA, "DMA Controller for SCC");
 647         ATARIHW_ANNOUNCE(TT_CLK, "Clock Chip MC146818A");
 648         ATARIHW_ANNOUNCE(MSTE_CLK, "Clock Chip RP5C15");
 649         ATARIHW_ANNOUNCE(SCU, "System Control Unit");
 650         ATARIHW_ANNOUNCE(BLITTER, "Blitter");
 651         ATARIHW_ANNOUNCE(VME, "VME Bus");
 652         ATARIHW_ANNOUNCE(DSP56K, "DSP56001 processor");
 653 }
 654
 655 /*
 656  * MSch: initial platform device support for Atari,
 657  * required for EtherNAT/EtherNEC/NetUSBee drivers
 658  */
 659
 660 #if defined(CONFIG_ATARI_ETHERNAT) || defined(CONFIG_ATARI_ETHERNEC)
 661 static void isp1160_delay(struct device *dev, int delay)
 662 {
 663         ndelay(delay);
 664 }
 665 #endif
 666
 667 #ifdef CONFIG_ATARI_ETHERNAT
 668 /*
 669  * EtherNAT: SMC91C111 Ethernet chipset, handled by smc91x driver
 670  */
 671
 672 #define ATARI_ETHERNAT_IRQ              140
 673
 674 static struct resource smc91x_resources[] = {
 675         [0] = {
 676                 .name   = "smc91x-regs",
 677                 .start  = ATARI_ETHERNAT_PHYS_ADDR,
 678                 .end    = ATARI_ETHERNAT_PHYS_ADDR + 0xfffff,
 679                 .flags  = IORESOURCE_MEM,
 680         },
 681         [1] = {
 682                 .name   = "smc91x-irq",
 683                 .start  = ATARI_ETHERNAT_IRQ,
 684                 .end    = ATARI_ETHERNAT_IRQ,
 685                 .flags  = IORESOURCE_IRQ,
 686         },
 687 };
 688
 689 static struct platform_device smc91x_device = {
 690         .name           = "smc91x",
 691         .id             = -1,
 692         .num_resources  = ARRAY_SIZE(smc91x_resources),
 693         .resource       = smc91x_resources,
 694 };
 695
 696 /*
 697  * ISP 1160 - using the isp116x-hcd module
 698  */
 699
 700 #define ATARI_USB_PHYS_ADDR     0x80000012
 701 #define ATARI_USB_IRQ           139
 702
 703 static struct resource isp1160_resources[] = {
 704         [0] = {
 705                 .name   = "isp1160-data",
 706                 .start  = ATARI_USB_PHYS_ADDR,
 707                 .end    = ATARI_USB_PHYS_ADDR + 0x1,
 708                 .flags  = IORESOURCE_MEM,
 709         },
 710         [1] = {
 711                 .name   = "isp1160-regs",
 712                 .start  = ATARI_USB_PHYS_ADDR + 0x4,
 713                 .end    = ATARI_USB_PHYS_ADDR + 0x5,
 714                 .flags  = IORESOURCE_MEM,
 715         },
 716         [2] = {
 717                 .name   = "isp1160-irq",
 718                 .start  = ATARI_USB_IRQ,
 719                 .end    = ATARI_USB_IRQ,
 720                 .flags  = IORESOURCE_IRQ,
 721         },
 722 };
 723
 724 /* (DataBusWidth16|AnalogOCEnable|DREQOutputPolarity|DownstreamPort15KRSel ) */
 725 static struct isp116x_platform_data isp1160_platform_data = {
 726         /* Enable internal resistors on downstream ports */
 727         .sel15Kres              = 1,
 728         /* On-chip overcurrent protection */
 729         .oc_enable              = 1,
 730         /* INT output polarity */
 731         .int_act_high           = 1,
 732         /* INT edge or level triggered */
 733         .int_edge_triggered     = 0,
 734
 735         /* WAKEUP pin connected - NOT SUPPORTED  */
 736         /* .remote_wakeup_connected = 0, */
 737         /* Wakeup by devices on usb bus enabled */
 738         .remote_wakeup_enable   = 0,
 739         .delay                  = isp1160_delay,
 740 };
 741
 742 static struct platform_device isp1160_device = {
 743         .name           = "isp116x-hcd",
 744         .id             = 0,
 745         .num_resources  = ARRAY_SIZE(isp1160_resources),
 746         .resource       = isp1160_resources,
 747         .dev                    = {
 748                 .platform_data  = &isp1160_platform_data,
 749         },
 750 };
 751
 752 static struct platform_device *atari_ethernat_devices[] __initdata = {
 753         &smc91x_device,
 754         &isp1160_device
 755 };
 756 #endif /* CONFIG_ATARI_ETHERNAT */
 757
 758 #ifdef CONFIG_ATARI_ETHERNEC
 759 /*
 760  * EtherNEC: RTL8019 (NE2000 compatible) Ethernet chipset,
 761  * handled by ne.c driver
 762  */
 763
 764 #define ATARI_ETHERNEC_PHYS_ADDR        0xfffa0000
 765 #define ATARI_ETHERNEC_BASE             0x300
 766 #define ATARI_ETHERNEC_IRQ              IRQ_MFP_TIMER1
 767
 768 static struct resource rtl8019_resources[] = {
 769         [0] = {
 770                 .name   = "rtl8019-regs",
 771                 .start  = ATARI_ETHERNEC_BASE,
 772                 .end    = ATARI_ETHERNEC_BASE + 0x20 - 1,
 773                 .flags  = IORESOURCE_IO,
 774         },
 775         [1] = {
 776                 .name   = "rtl8019-irq",
 777                 .start  = ATARI_ETHERNEC_IRQ,
 778                 .end    = ATARI_ETHERNEC_IRQ,
 779                 .flags  = IORESOURCE_IRQ,
 780         },
 781 };
 782
 783 static struct platform_device rtl8019_device = {
 784         .name           = "ne",
 785         .id             = -1,
 786         .num_resources  = ARRAY_SIZE(rtl8019_resources),
 787         .resource       = rtl8019_resources,
 788 };
 789
 790 /*
 791  * NetUSBee: ISP1160 USB host adapter via ROM-port adapter
 792  */
 793
 794 #define ATARI_NETUSBEE_PHYS_ADDR        0xfffa8000
 795 #define ATARI_NETUSBEE_BASE             0x340
 796 #define ATARI_NETUSBEE_IRQ              IRQ_MFP_TIMER2
 797
 798 static struct resource netusbee_resources[] = {
 799         [0] = {
 800                 .name   = "isp1160-data",
 801                 .start  = ATARI_NETUSBEE_BASE,
 802                 .end    = ATARI_NETUSBEE_BASE + 0x1,
 803                 .flags  = IORESOURCE_MEM,
 804         },
 805         [1] = {
 806                 .name   = "isp1160-regs",
 807                 .start  = ATARI_NETUSBEE_BASE + 0x20,
 808                 .end    = ATARI_NETUSBEE_BASE + 0x21,
 809                 .flags  = IORESOURCE_MEM,
 810         },
 811         [2] = {
 812                 .name   = "isp1160-irq",
 813                 .start  = ATARI_NETUSBEE_IRQ,
 814                 .end    = ATARI_NETUSBEE_IRQ,
 815                 .flags  = IORESOURCE_IRQ,
 816         },
 817 };
 818
 819 /* (DataBusWidth16|AnalogOCEnable|DREQOutputPolarity|DownstreamPort15KRSel ) */
 820 static struct isp116x_platform_data netusbee_platform_data = {
 821         /* Enable internal resistors on downstream ports */
 822         .sel15Kres              = 1,
 823         /* On-chip overcurrent protection */
 824         .oc_enable              = 1,
 825         /* INT output polarity */
 826         .int_act_high           = 1,
 827         /* INT edge or level triggered */
 828         .int_edge_triggered     = 0,
 829
 830         /* WAKEUP pin connected - NOT SUPPORTED  */
 831         /* .remote_wakeup_connected = 0, */
 832         /* Wakeup by devices on usb bus enabled */
 833         .remote_wakeup_enable   = 0,
 834         .delay                  = isp1160_delay,
 835 };
 836
 837 static struct platform_device netusbee_device = {
 838         .name           = "isp116x-hcd",
 839         .id             = 1,
 840         .num_resources  = ARRAY_SIZE(netusbee_resources),
 841         .resource       = netusbee_resources,
 842         .dev                    = {
 843                 .platform_data  = &netusbee_platform_data,
 844         },
 845 };
 846
 847 static struct platform_device *atari_netusbee_devices[] __initdata = {
 848         &rtl8019_device,
 849         &netusbee_device
 850 };
 851 #endif /* CONFIG_ATARI_ETHERNEC */
 852
 853 #if IS_ENABLED(CONFIG_ATARI_SCSI)
 854 static const struct resource atari_scsi_st_rsrc[] __initconst = {
 855         {
 856                 .flags = IORESOURCE_IRQ,
 857                 .start = IRQ_MFP_FSCSI,
 858                 .end   = IRQ_MFP_FSCSI,
 859         },
 860 };
 861
 862 static const struct resource atari_scsi_tt_rsrc[] __initconst = {
 863         {
 864                 .flags = IORESOURCE_IRQ,
 865                 .start = IRQ_TT_MFP_SCSI,
 866                 .end   = IRQ_TT_MFP_SCSI,
 867         },
 868 };
 869 #endif
 870
 871 /*
 872  * Falcon IDE interface
 873  */
 874
 875 #define FALCON_IDE_BASE 0xfff00000
 876
 877 static const struct resource atari_falconide_rsrc[] __initconst = {
 878         DEFINE_RES_MEM(FALCON_IDE_BASE, 0x38),
 879         DEFINE_RES_MEM(FALCON_IDE_BASE + 0x38, 2),
 880 };
 881
 882 int __init atari_platform_init(void)
 883 {
 884         struct platform_device *pdev;
 885         int rv = 0;
 886
 887         if (!MACH_IS_ATARI)
 888                 return -ENODEV;
 889
 890 #ifdef CONFIG_ATARI_ETHERNAT
 891         {
 892                 unsigned char *enatc_virt;
 893                 enatc_virt = (unsigned char *)ioremap((ATARI_ETHERNAT_PHYS_ADDR+0x23), 0xf);
 894                 if (hwreg_present(enatc_virt)) {
 895                         rv = platform_add_devices(atari_ethernat_devices,
 896                                                 ARRAY_SIZE(atari_ethernat_devices));
 897                 }
 898                 iounmap(enatc_virt);
 899         }
 900 #endif
 901
 902 #ifdef CONFIG_ATARI_ETHERNEC
 903         {
 904                 int error;
 905                 unsigned char *enec_virt;
 906                 enec_virt = (unsigned char *)ioremap((ATARI_ETHERNEC_PHYS_ADDR), 0xf);
 907                 if (hwreg_present(enec_virt)) {
 908                         error = platform_add_devices(atari_netusbee_devices,
 909                                                 ARRAY_SIZE(atari_netusbee_devices));
 910                         if (error && !rv)
 911                                 rv = error;
 912                 }
 913                 iounmap(enec_virt);
 914         }
 915 #endif
 916
 917 #if IS_ENABLED(CONFIG_ATARI_SCSI)
 918         if (ATARIHW_PRESENT(ST_SCSI))
 919                 platform_device_register_simple("atari_scsi", -1,
 920                         atari_scsi_st_rsrc, ARRAY_SIZE(atari_scsi_st_rsrc));
 921         else if (ATARIHW_PRESENT(TT_SCSI))
 922                 platform_device_register_simple("atari_scsi", -1,
 923                         atari_scsi_tt_rsrc, ARRAY_SIZE(atari_scsi_tt_rsrc));
 924 #endif
 925
 926         if (ATARIHW_PRESENT(IDE)) {
 927                 pdev = platform_device_register_simple("atari-falcon-ide", -1,
 928                         atari_falconide_rsrc, ARRAY_SIZE(atari_falconide_rsrc));
 929                 if (IS_ERR(pdev))
 930                         rv = PTR_ERR(pdev);
 931         }
 932
 933         return rv;
 934 }
 935
 936 arch_initcall(atari_platform_init);