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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#include <asm/config.h>
50
51u_long atari_mch_cookie;
52EXPORT_SYMBOL(atari_mch_cookie);
53
54u_long atari_mch_type;
55EXPORT_SYMBOL(atari_mch_type);
56
57struct atari_hw_present atari_hw_present;
58EXPORT_SYMBOL(atari_hw_present);
59
60u_long atari_switches;
61EXPORT_SYMBOL(atari_switches);
62
63int atari_dont_touch_floppy_select;
64EXPORT_SYMBOL(atari_dont_touch_floppy_select);
65
66int atari_rtc_year_offset;
67
68/* local function prototypes */
69static void atari_reset(void);
70static void atari_get_model(char *model);
71static void atari_get_hardware_list(struct seq_file *m);
72
73/* atari specific irq functions */
74extern void atari_init_IRQ (void);
75extern void atari_mksound(unsigned int count, unsigned int ticks);
76#ifdef CONFIG_HEARTBEAT
77static void atari_heartbeat(int on);
78#endif
79
80/* atari specific timer functions (in time.c) */
81extern void atari_sched_init(void);
82extern int atari_mste_hwclk (int, struct rtc_time *);
83extern int atari_tt_hwclk (int, struct rtc_time *);
84
85/* ++roman: This is a more elaborate test for an SCC chip, since the plain
86 * Medusa board generates DTACK at the SCC's standard addresses, but a SCC
87 * board in the Medusa is possible. Also, the addresses where the ST_ESCC
88 * resides generate DTACK without the chip, too.
89 * The method is to write values into the interrupt vector register, that
90 * should be readable without trouble (from channel A!).
91 */
92
93static int __init scc_test(volatile char *ctla)
94{
95 if (!hwreg_present(ctla))
96 return 0;
97 MFPDELAY();
98
99 *ctla = 2;
100 MFPDELAY();
101 *ctla = 0x40;
102 MFPDELAY();
103
104 *ctla = 2;
105 MFPDELAY();
106 if (*ctla != 0x40)
107 return 0;
108 MFPDELAY();
109
110 *ctla = 2;
111 MFPDELAY();
112 *ctla = 0x60;
113 MFPDELAY();
114
115 *ctla = 2;
116 MFPDELAY();
117 if (*ctla != 0x60)
118 return 0;
119
120 return 1;
121}
122
123
124 /*
125 * Parse an Atari-specific record in the bootinfo
126 */
127
128int __init atari_parse_bootinfo(const struct bi_record *record)
129{
130 int unknown = 0;
131 const void *data = record->data;
132
133 switch (be16_to_cpu(record->tag)) {
134 case BI_ATARI_MCH_COOKIE:
135 atari_mch_cookie = be32_to_cpup(data);
136 break;
137 case BI_ATARI_MCH_TYPE:
138 atari_mch_type = be32_to_cpup(data);
139 break;
140 default:
141 unknown = 1;
142 break;
143 }
144 return unknown;
145}
146
147
148/* Parse the Atari-specific switches= option. */
149static int __init atari_switches_setup(char *str)
150{
151 char switches[COMMAND_LINE_SIZE];
152 char *p;
153 int ovsc_shift;
154 char *args = switches;
155
156 if (!MACH_IS_ATARI)
157 return 0;
158
159 /* copy string to local array, strsep works destructively... */
160 strcpy(switches, str);
161 atari_switches = 0;
162
163 /* parse the options */
164 while ((p = strsep(&args, ",")) != NULL) {
165 if (!*p)
166 continue;
167 ovsc_shift = 0;
168 if (strncmp(p, "ov_", 3) == 0) {
169 p += 3;
170 ovsc_shift = ATARI_SWITCH_OVSC_SHIFT;
171 }
172
173 if (strcmp(p, "ikbd") == 0) {
174 /* RTS line of IKBD ACIA */
175 atari_switches |= ATARI_SWITCH_IKBD << ovsc_shift;
176 } else if (strcmp(p, "midi") == 0) {
177 /* RTS line of MIDI ACIA */
178 atari_switches |= ATARI_SWITCH_MIDI << ovsc_shift;
179 } else if (strcmp(p, "snd6") == 0) {
180 atari_switches |= ATARI_SWITCH_SND6 << ovsc_shift;
181 } else if (strcmp(p, "snd7") == 0) {
182 atari_switches |= ATARI_SWITCH_SND7 << ovsc_shift;
183 }
184 }
185 return 0;
186}
187
188early_param("switches", atari_switches_setup);
189
190
191 /*
192 * Setup the Atari configuration info
193 */
194
195void __init config_atari(void)
196{
197 unsigned short tos_version;
198
199 memset(&atari_hw_present, 0, sizeof(atari_hw_present));
200
201 /* Change size of I/O space from 64KB to 4GB. */
202 ioport_resource.end = 0xFFFFFFFF;
203
204 mach_sched_init = atari_sched_init;
205 mach_init_IRQ = atari_init_IRQ;
206 mach_get_model = atari_get_model;
207 mach_get_hardware_list = atari_get_hardware_list;
208 mach_reset = atari_reset;
209#if IS_ENABLED(CONFIG_INPUT_M68K_BEEP)
210 mach_beep = atari_mksound;
211#endif
212#ifdef CONFIG_HEARTBEAT
213 mach_heartbeat = atari_heartbeat;
214#endif
215
216 /* Set switches as requested by the user */
217 if (atari_switches & ATARI_SWITCH_IKBD)
218 acia.key_ctrl = ACIA_DIV64 | ACIA_D8N1S | ACIA_RHTID;
219 if (atari_switches & ATARI_SWITCH_MIDI)
220 acia.mid_ctrl = ACIA_DIV16 | ACIA_D8N1S | ACIA_RHTID;
221 if (atari_switches & (ATARI_SWITCH_SND6|ATARI_SWITCH_SND7)) {
222 sound_ym.rd_data_reg_sel = 14;
223 sound_ym.wd_data = sound_ym.rd_data_reg_sel |
224 ((atari_switches&ATARI_SWITCH_SND6) ? 0x40 : 0) |
225 ((atari_switches&ATARI_SWITCH_SND7) ? 0x80 : 0);
226 }
227
228 /* ++bjoern:
229 * Determine hardware present
230 */
231
232 pr_info("Atari hardware found:");
233 if (MACH_IS_MEDUSA) {
234 /* There's no Atari video hardware on the Medusa, but all the
235 * addresses below generate a DTACK so no bus error occurs! */
236 } else if (hwreg_present(f030_xreg)) {
237 ATARIHW_SET(VIDEL_SHIFTER);
238 pr_cont(" VIDEL");
239 /* This is a temporary hack: If there is Falcon video
240 * hardware, we assume that the ST-DMA serves SCSI instead of
241 * ACSI. In the future, there should be a better method for
242 * this...
243 */
244 ATARIHW_SET(ST_SCSI);
245 pr_cont(" STDMA-SCSI");
246 } else if (hwreg_present(tt_palette)) {
247 ATARIHW_SET(TT_SHIFTER);
248 pr_cont(" TT_SHIFTER");
249 } else if (hwreg_present(&shifter_st.bas_hi)) {
250 if (hwreg_present(&shifter_st.bas_lo) &&
251 (shifter_st.bas_lo = 0x0aau, shifter_st.bas_lo == 0x0aau)) {
252 ATARIHW_SET(EXTD_SHIFTER);
253 pr_cont(" EXTD_SHIFTER");
254 } else {
255 ATARIHW_SET(STND_SHIFTER);
256 pr_cont(" STND_SHIFTER");
257 }
258 }
259 if (hwreg_present(&st_mfp.par_dt_reg)) {
260 ATARIHW_SET(ST_MFP);
261 pr_cont(" ST_MFP");
262 }
263 if (hwreg_present(&tt_mfp.par_dt_reg)) {
264 ATARIHW_SET(TT_MFP);
265 pr_cont(" TT_MFP");
266 }
267 if (hwreg_present(&tt_scsi_dma.dma_addr_hi)) {
268 ATARIHW_SET(SCSI_DMA);
269 pr_cont(" TT_SCSI_DMA");
270 }
271 /*
272 * The ST-DMA address registers aren't readable
273 * on all Medusas, so the test below may fail
274 */
275 if (MACH_IS_MEDUSA ||
276 (hwreg_present(&st_dma.dma_vhi) &&
277 (st_dma.dma_vhi = 0x55) && (st_dma.dma_hi = 0xaa) &&
278 st_dma.dma_vhi == 0x55 && st_dma.dma_hi == 0xaa &&
279 (st_dma.dma_vhi = 0xaa) && (st_dma.dma_hi = 0x55) &&
280 st_dma.dma_vhi == 0xaa && st_dma.dma_hi == 0x55)) {
281 ATARIHW_SET(EXTD_DMA);
282 pr_cont(" EXTD_DMA");
283 }
284 if (hwreg_present(&tt_scsi.scsi_data)) {
285 ATARIHW_SET(TT_SCSI);
286 pr_cont(" TT_SCSI");
287 }
288 if (hwreg_present(&sound_ym.rd_data_reg_sel)) {
289 ATARIHW_SET(YM_2149);
290 pr_cont(" YM2149");
291 }
292 if (!MACH_IS_MEDUSA && hwreg_present(&tt_dmasnd.ctrl)) {
293 ATARIHW_SET(PCM_8BIT);
294 pr_cont(" PCM");
295 }
296 if (hwreg_present(&falcon_codec.unused5)) {
297 ATARIHW_SET(CODEC);
298 pr_cont(" CODEC");
299 }
300 if (hwreg_present(&dsp56k_host_interface.icr)) {
301 ATARIHW_SET(DSP56K);
302 pr_cont(" DSP56K");
303 }
304 if (hwreg_present(&tt_scc_dma.dma_ctrl) &&
305#if 0
306 /* This test sucks! Who knows some better? */
307 (tt_scc_dma.dma_ctrl = 0x01, (tt_scc_dma.dma_ctrl & 1) == 1) &&
308 (tt_scc_dma.dma_ctrl = 0x00, (tt_scc_dma.dma_ctrl & 1) == 0)
309#else
310 !MACH_IS_MEDUSA
311#endif
312 ) {
313 ATARIHW_SET(SCC_DMA);
314 pr_cont(" SCC_DMA");
315 }
316 if (scc_test(&atari_scc.cha_a_ctrl)) {
317 ATARIHW_SET(SCC);
318 pr_cont(" SCC");
319 }
320 if (scc_test(&st_escc.cha_b_ctrl)) {
321 ATARIHW_SET(ST_ESCC);
322 pr_cont(" ST_ESCC");
323 }
324 if (hwreg_present(&tt_scu.sys_mask)) {
325 ATARIHW_SET(SCU);
326 /* Assume a VME bus if there's a SCU */
327 ATARIHW_SET(VME);
328 pr_cont(" VME SCU");
329 }
330 if (hwreg_present((void *)(0xffff9210))) {
331 ATARIHW_SET(ANALOG_JOY);
332 pr_cont(" ANALOG_JOY");
333 }
334 if (hwreg_present(blitter.halftone)) {
335 ATARIHW_SET(BLITTER);
336 pr_cont(" BLITTER");
337 }
338 if (hwreg_present((void *)0xfff00039)) {
339 ATARIHW_SET(IDE);
340 pr_cont(" IDE");
341 }
342#if 1 /* This maybe wrong */
343 if (!MACH_IS_MEDUSA && hwreg_present(&tt_microwire.data) &&
344 hwreg_present(&tt_microwire.mask) &&
345 (tt_microwire.mask = 0x7ff,
346 udelay(1),
347 tt_microwire.data = MW_LM1992_PSG_HIGH | MW_LM1992_ADDR,
348 udelay(1),
349 tt_microwire.data != 0)) {
350 ATARIHW_SET(MICROWIRE);
351 while (tt_microwire.mask != 0x7ff)
352 ;
353 pr_cont(" MICROWIRE");
354 }
355#endif
356 if (hwreg_present(&tt_rtc.regsel)) {
357 ATARIHW_SET(TT_CLK);
358 pr_cont(" TT_CLK");
359 mach_hwclk = atari_tt_hwclk;
360 }
361 if (hwreg_present(&mste_rtc.sec_ones)) {
362 ATARIHW_SET(MSTE_CLK);
363 pr_cont(" MSTE_CLK");
364 mach_hwclk = atari_mste_hwclk;
365 }
366 if (!MACH_IS_MEDUSA && hwreg_present(&dma_wd.fdc_speed) &&
367 hwreg_write(&dma_wd.fdc_speed, 0)) {
368 ATARIHW_SET(FDCSPEED);
369 pr_cont(" FDC_SPEED");
370 }
371 if (!ATARIHW_PRESENT(ST_SCSI)) {
372 ATARIHW_SET(ACSI);
373 pr_cont(" ACSI");
374 }
375 pr_cont("\n");
376
377 if (CPU_IS_040_OR_060)
378 /* Now it seems to be safe to turn of the tt0 transparent
379 * translation (the one that must not be turned off in
380 * head.S...)
381 */
382 asm volatile ("\n"
383 " moveq #0,%%d0\n"
384 " .chip 68040\n"
385 " movec %%d0,%%itt0\n"
386 " movec %%d0,%%dtt0\n"
387 " .chip 68k"
388 : /* no outputs */
389 : /* no inputs */
390 : "d0");
391
392 /* allocator for memory that must reside in st-ram */
393 atari_stram_init();
394
395 /* Set up a mapping for the VMEbus address region:
396 *
397 * VME is either at phys. 0xfexxxxxx (TT) or 0xa00000..0xdfffff
398 * (MegaSTE) In both cases, the whole 16 MB chunk is mapped at
399 * 0xfe000000 virt., because this can be done with a single
400 * transparent translation. On the 68040, lots of often unused
401 * page tables would be needed otherwise. On a MegaSTE or similar,
402 * the highest byte is stripped off by hardware due to the 24 bit
403 * design of the bus.
404 */
405
406 if (CPU_IS_020_OR_030) {
407 unsigned long tt1_val;
408 tt1_val = 0xfe008543; /* Translate 0xfexxxxxx, enable, cache
409 * inhibit, read and write, FDC mask = 3,
410 * FDC val = 4 -> Supervisor only */
411 asm volatile ("\n"
412 " .chip 68030\n"
413 " pmove %0,%/tt1\n"
414 " .chip 68k"
415 : : "m" (tt1_val));
416 } else {
417 asm volatile ("\n"
418 " .chip 68040\n"
419 " movec %0,%%itt1\n"
420 " movec %0,%%dtt1\n"
421 " .chip 68k"
422 :
423 : "d" (0xfe00a040)); /* Translate 0xfexxxxxx, enable,
424 * supervisor only, non-cacheable/
425 * serialized, writable */
426
427 }
428
429 /* Fetch tos version at Physical 2 */
430 /*
431 * We my not be able to access this address if the kernel is
432 * loaded to st ram, since the first page is unmapped. On the
433 * Medusa this is always the case and there is nothing we can do
434 * about this, so we just assume the smaller offset. For the TT
435 * we use the fact that in head.S we have set up a mapping
436 * 0xFFxxxxxx -> 0x00xxxxxx, so that the first 16MB is accessible
437 * in the last 16MB of the address space.
438 */
439 tos_version = (MACH_IS_MEDUSA) ?
440 0xfff : *(unsigned short *)0xff000002;
441 atari_rtc_year_offset = (tos_version < 0x306) ? 70 : 68;
442}
443
444#ifdef CONFIG_HEARTBEAT
445static void atari_heartbeat(int on)
446{
447 unsigned char tmp;
448 unsigned long flags;
449
450 if (atari_dont_touch_floppy_select)
451 return;
452
453 local_irq_save(flags);
454 sound_ym.rd_data_reg_sel = 14; /* Select PSG Port A */
455 tmp = sound_ym.rd_data_reg_sel;
456 sound_ym.wd_data = on ? (tmp & ~0x02) : (tmp | 0x02);
457 local_irq_restore(flags);
458}
459#endif
460
461/* ++roman:
462 *
463 * This function does a reset on machines that lack the ability to
464 * assert the processor's _RESET signal somehow via hardware. It is
465 * based on the fact that you can find the initial SP and PC values
466 * after a reset at physical addresses 0 and 4. This works pretty well
467 * for Atari machines, since the lowest 8 bytes of physical memory are
468 * really ROM (mapped by hardware). For other 680x0 machines: don't
469 * know if it works...
470 *
471 * To get the values at addresses 0 and 4, the MMU better is turned
472 * off first. After that, we have to jump into physical address space
473 * (the PC before the pmove statement points to the virtual address of
474 * the code). Getting that physical address is not hard, but the code
475 * becomes a bit complex since I've tried to ensure that the jump
476 * statement after the pmove is in the cache already (otherwise the
477 * processor can't fetch it!). For that, the code first jumps to the
478 * jump statement with the (virtual) address of the pmove section in
479 * an address register . The jump statement is surely in the cache
480 * now. After that, that physical address of the reset code is loaded
481 * into the same address register, pmove is done and the same jump
482 * statements goes to the reset code. Since there are not many
483 * statements between the two jumps, I hope it stays in the cache.
484 *
485 * The C code makes heavy use of the GCC features that you can get the
486 * address of a C label. No hope to compile this with another compiler
487 * than GCC!
488 */
489
490/* ++andreas: no need for complicated code, just depend on prefetch */
491
492static void atari_reset(void)
493{
494 long tc_val = 0;
495 long reset_addr;
496
497 /*
498 * On the Medusa, phys. 0x4 may contain garbage because it's no
499 * ROM. See above for explanation why we cannot use PTOV(4).
500 */
501 reset_addr = MACH_IS_MEDUSA || MACH_IS_AB40 ? 0xe00030 :
502 *(unsigned long *) 0xff000004;
503
504 /* reset ACIA for switch off OverScan, if it's active */
505 if (atari_switches & ATARI_SWITCH_OVSC_IKBD)
506 acia.key_ctrl = ACIA_RESET;
507 if (atari_switches & ATARI_SWITCH_OVSC_MIDI)
508 acia.mid_ctrl = ACIA_RESET;
509
510 /* processor independent: turn off interrupts and reset the VBR;
511 * the caches must be left enabled, else prefetching the final jump
512 * instruction doesn't work.
513 */
514 local_irq_disable();
515 asm volatile ("movec %0,%%vbr"
516 : : "d" (0));
517
518 if (CPU_IS_040_OR_060) {
519 unsigned long jmp_addr040 = virt_to_phys(&&jmp_addr_label040);
520 if (CPU_IS_060) {
521 /* 68060: clear PCR to turn off superscalar operation */
522 asm volatile ("\n"
523 " .chip 68060\n"
524 " movec %0,%%pcr\n"
525 " .chip 68k"
526 : : "d" (0));
527 }
528
529 asm volatile ("\n"
530 " move.l %0,%%d0\n"
531 " and.l #0xff000000,%%d0\n"
532 " or.w #0xe020,%%d0\n" /* map 16 MB, enable, cacheable */
533 " .chip 68040\n"
534 " movec %%d0,%%itt0\n"
535 " movec %%d0,%%dtt0\n"
536 " .chip 68k\n"
537 " jmp %0@"
538 : : "a" (jmp_addr040)
539 : "d0");
540 jmp_addr_label040:
541 asm volatile ("\n"
542 " moveq #0,%%d0\n"
543 " nop\n"
544 " .chip 68040\n"
545 " cinva %%bc\n"
546 " nop\n"
547 " pflusha\n"
548 " nop\n"
549 " movec %%d0,%%tc\n"
550 " nop\n"
551 /* the following setup of transparent translations is needed on the
552 * Afterburner040 to successfully reboot. Other machines shouldn't
553 * care about a different tt regs setup, they also didn't care in
554 * the past that the regs weren't turned off. */
555 " move.l #0xffc000,%%d0\n" /* whole insn space cacheable */
556 " movec %%d0,%%itt0\n"
557 " movec %%d0,%%itt1\n"
558 " or.w #0x40,%/d0\n" /* whole data space non-cacheable/ser. */
559 " movec %%d0,%%dtt0\n"
560 " movec %%d0,%%dtt1\n"
561 " .chip 68k\n"
562 " jmp %0@"
563 : /* no outputs */
564 : "a" (reset_addr)
565 : "d0");
566 } else
567 asm volatile ("\n"
568 " pmove %0,%%tc\n"
569 " jmp %1@"
570 : /* no outputs */
571 : "m" (tc_val), "a" (reset_addr));
572}
573
574
575static void atari_get_model(char *model)
576{
577 strcpy(model, "Atari ");
578 switch (atari_mch_cookie >> 16) {
579 case ATARI_MCH_ST:
580 if (ATARIHW_PRESENT(MSTE_CLK))
581 strcat(model, "Mega ST");
582 else
583 strcat(model, "ST");
584 break;
585 case ATARI_MCH_STE:
586 if (MACH_IS_MSTE)
587 strcat(model, "Mega STE");
588 else
589 strcat(model, "STE");
590 break;
591 case ATARI_MCH_TT:
592 if (MACH_IS_MEDUSA)
593 /* Medusa has TT _MCH cookie */
594 strcat(model, "Medusa");
595 else
596 strcat(model, "TT");
597 break;
598 case ATARI_MCH_FALCON:
599 strcat(model, "Falcon");
600 if (MACH_IS_AB40)
601 strcat(model, " (with Afterburner040)");
602 break;
603 default:
604 sprintf(model + strlen(model), "(unknown mach cookie 0x%lx)",
605 atari_mch_cookie);
606 break;
607 }
608}
609
610
611static void atari_get_hardware_list(struct seq_file *m)
612{
613 int i;
614
615 for (i = 0; i < m68k_num_memory; i++)
616 seq_printf(m, "\t%3ld MB at 0x%08lx (%s)\n",
617 m68k_memory[i].size >> 20, m68k_memory[i].addr,
618 (m68k_memory[i].addr & 0xff000000 ?
619 "alternate RAM" : "ST-RAM"));
620
621#define ATARIHW_ANNOUNCE(name, str) \
622 if (ATARIHW_PRESENT(name)) \
623 seq_printf(m, "\t%s\n", str)
624
625 seq_puts(m, "Detected hardware:\n");
626 ATARIHW_ANNOUNCE(STND_SHIFTER, "ST Shifter");
627 ATARIHW_ANNOUNCE(EXTD_SHIFTER, "STe Shifter");
628 ATARIHW_ANNOUNCE(TT_SHIFTER, "TT Shifter");
629 ATARIHW_ANNOUNCE(VIDEL_SHIFTER, "Falcon Shifter");
630 ATARIHW_ANNOUNCE(YM_2149, "Programmable Sound Generator");
631 ATARIHW_ANNOUNCE(PCM_8BIT, "PCM 8 Bit Sound");
632 ATARIHW_ANNOUNCE(CODEC, "CODEC Sound");
633 ATARIHW_ANNOUNCE(TT_SCSI, "SCSI Controller NCR5380 (TT style)");
634 ATARIHW_ANNOUNCE(ST_SCSI, "SCSI Controller NCR5380 (Falcon style)");
635 ATARIHW_ANNOUNCE(ACSI, "ACSI Interface");
636 ATARIHW_ANNOUNCE(IDE, "IDE Interface");
637 ATARIHW_ANNOUNCE(FDCSPEED, "8/16 Mhz Switch for FDC");
638 ATARIHW_ANNOUNCE(ST_MFP, "Multi Function Peripheral MFP 68901");
639 ATARIHW_ANNOUNCE(TT_MFP, "Second Multi Function Peripheral MFP 68901");
640 ATARIHW_ANNOUNCE(SCC, "Serial Communications Controller SCC 8530");
641 ATARIHW_ANNOUNCE(ST_ESCC, "Extended Serial Communications Controller SCC 85230");
642 ATARIHW_ANNOUNCE(ANALOG_JOY, "Paddle Interface");
643 ATARIHW_ANNOUNCE(MICROWIRE, "MICROWIRE(tm) Interface");
644 ATARIHW_ANNOUNCE(STND_DMA, "DMA Controller (24 bit)");
645 ATARIHW_ANNOUNCE(EXTD_DMA, "DMA Controller (32 bit)");
646 ATARIHW_ANNOUNCE(SCSI_DMA, "DMA Controller for NCR5380");
647 ATARIHW_ANNOUNCE(SCC_DMA, "DMA Controller for SCC");
648 ATARIHW_ANNOUNCE(TT_CLK, "Clock Chip MC146818A");
649 ATARIHW_ANNOUNCE(MSTE_CLK, "Clock Chip RP5C15");
650 ATARIHW_ANNOUNCE(SCU, "System Control Unit");
651 ATARIHW_ANNOUNCE(BLITTER, "Blitter");
652 ATARIHW_ANNOUNCE(VME, "VME Bus");
653 ATARIHW_ANNOUNCE(DSP56K, "DSP56001 processor");
654}
655
656/*
657 * MSch: initial platform device support for Atari,
658 * required for EtherNAT/EtherNEC/NetUSBee drivers
659 */
660
661#if defined(CONFIG_ATARI_ETHERNAT) || defined(CONFIG_ATARI_ETHERNEC)
662static void isp1160_delay(struct device *dev, int delay)
663{
664 ndelay(delay);
665}
666#endif
667
668#ifdef CONFIG_ATARI_ETHERNAT
669/*
670 * EtherNAT: SMC91C111 Ethernet chipset, handled by smc91x driver
671 */
672
673#define ATARI_ETHERNAT_IRQ 140
674
675static struct resource smc91x_resources[] = {
676 [0] = {
677 .name = "smc91x-regs",
678 .start = ATARI_ETHERNAT_PHYS_ADDR,
679 .end = ATARI_ETHERNAT_PHYS_ADDR + 0xfffff,
680 .flags = IORESOURCE_MEM,
681 },
682 [1] = {
683 .name = "smc91x-irq",
684 .start = ATARI_ETHERNAT_IRQ,
685 .end = ATARI_ETHERNAT_IRQ,
686 .flags = IORESOURCE_IRQ,
687 },
688};
689
690static struct platform_device smc91x_device = {
691 .name = "smc91x",
692 .id = -1,
693 .num_resources = ARRAY_SIZE(smc91x_resources),
694 .resource = smc91x_resources,
695};
696
697/*
698 * ISP 1160 - using the isp116x-hcd module
699 */
700
701#define ATARI_USB_PHYS_ADDR 0x80000012
702#define ATARI_USB_IRQ 139
703
704static struct resource isp1160_resources[] = {
705 [0] = {
706 .name = "isp1160-data",
707 .start = ATARI_USB_PHYS_ADDR,
708 .end = ATARI_USB_PHYS_ADDR + 0x1,
709 .flags = IORESOURCE_MEM,
710 },
711 [1] = {
712 .name = "isp1160-regs",
713 .start = ATARI_USB_PHYS_ADDR + 0x4,
714 .end = ATARI_USB_PHYS_ADDR + 0x5,
715 .flags = IORESOURCE_MEM,
716 },
717 [2] = {
718 .name = "isp1160-irq",
719 .start = ATARI_USB_IRQ,
720 .end = ATARI_USB_IRQ,
721 .flags = IORESOURCE_IRQ,
722 },
723};
724
725/* (DataBusWidth16|AnalogOCEnable|DREQOutputPolarity|DownstreamPort15KRSel ) */
726static struct isp116x_platform_data isp1160_platform_data = {
727 /* Enable internal resistors on downstream ports */
728 .sel15Kres = 1,
729 /* On-chip overcurrent protection */
730 .oc_enable = 1,
731 /* INT output polarity */
732 .int_act_high = 1,
733 /* INT edge or level triggered */
734 .int_edge_triggered = 0,
735
736 /* WAKEUP pin connected - NOT SUPPORTED */
737 /* .remote_wakeup_connected = 0, */
738 /* Wakeup by devices on usb bus enabled */
739 .remote_wakeup_enable = 0,
740 .delay = isp1160_delay,
741};
742
743static struct platform_device isp1160_device = {
744 .name = "isp116x-hcd",
745 .id = 0,
746 .num_resources = ARRAY_SIZE(isp1160_resources),
747 .resource = isp1160_resources,
748 .dev = {
749 .platform_data = &isp1160_platform_data,
750 },
751};
752
753static struct platform_device *atari_ethernat_devices[] __initdata = {
754 &smc91x_device,
755 &isp1160_device
756};
757#endif /* CONFIG_ATARI_ETHERNAT */
758
759#ifdef CONFIG_ATARI_ETHERNEC
760/*
761 * EtherNEC: RTL8019 (NE2000 compatible) Ethernet chipset,
762 * handled by ne.c driver
763 */
764
765#define ATARI_ETHERNEC_PHYS_ADDR 0xfffa0000
766#define ATARI_ETHERNEC_BASE 0x300
767#define ATARI_ETHERNEC_IRQ IRQ_MFP_TIMER1
768
769static struct resource rtl8019_resources[] = {
770 [0] = {
771 .name = "rtl8019-regs",
772 .start = ATARI_ETHERNEC_BASE,
773 .end = ATARI_ETHERNEC_BASE + 0x20 - 1,
774 .flags = IORESOURCE_IO,
775 },
776 [1] = {
777 .name = "rtl8019-irq",
778 .start = ATARI_ETHERNEC_IRQ,
779 .end = ATARI_ETHERNEC_IRQ,
780 .flags = IORESOURCE_IRQ,
781 },
782};
783
784static struct platform_device rtl8019_device = {
785 .name = "ne",
786 .id = -1,
787 .num_resources = ARRAY_SIZE(rtl8019_resources),
788 .resource = rtl8019_resources,
789};
790
791/*
792 * NetUSBee: ISP1160 USB host adapter via ROM-port adapter
793 */
794
795#define ATARI_NETUSBEE_PHYS_ADDR 0xfffa8000
796#define ATARI_NETUSBEE_BASE 0x340
797#define ATARI_NETUSBEE_IRQ IRQ_MFP_TIMER2
798
799static struct resource netusbee_resources[] = {
800 [0] = {
801 .name = "isp1160-data",
802 .start = ATARI_NETUSBEE_BASE,
803 .end = ATARI_NETUSBEE_BASE + 0x1,
804 .flags = IORESOURCE_MEM,
805 },
806 [1] = {
807 .name = "isp1160-regs",
808 .start = ATARI_NETUSBEE_BASE + 0x20,
809 .end = ATARI_NETUSBEE_BASE + 0x21,
810 .flags = IORESOURCE_MEM,
811 },
812 [2] = {
813 .name = "isp1160-irq",
814 .start = ATARI_NETUSBEE_IRQ,
815 .end = ATARI_NETUSBEE_IRQ,
816 .flags = IORESOURCE_IRQ,
817 },
818};
819
820/* (DataBusWidth16|AnalogOCEnable|DREQOutputPolarity|DownstreamPort15KRSel ) */
821static struct isp116x_platform_data netusbee_platform_data = {
822 /* Enable internal resistors on downstream ports */
823 .sel15Kres = 1,
824 /* On-chip overcurrent protection */
825 .oc_enable = 1,
826 /* INT output polarity */
827 .int_act_high = 1,
828 /* INT edge or level triggered */
829 .int_edge_triggered = 0,
830
831 /* WAKEUP pin connected - NOT SUPPORTED */
832 /* .remote_wakeup_connected = 0, */
833 /* Wakeup by devices on usb bus enabled */
834 .remote_wakeup_enable = 0,
835 .delay = isp1160_delay,
836};
837
838static struct platform_device netusbee_device = {
839 .name = "isp116x-hcd",
840 .id = 1,
841 .num_resources = ARRAY_SIZE(netusbee_resources),
842 .resource = netusbee_resources,
843 .dev = {
844 .platform_data = &netusbee_platform_data,
845 },
846};
847
848static struct platform_device *atari_netusbee_devices[] __initdata = {
849 &rtl8019_device,
850 &netusbee_device
851};
852#endif /* CONFIG_ATARI_ETHERNEC */
853
854#if IS_ENABLED(CONFIG_ATARI_SCSI)
855static const struct resource atari_scsi_st_rsrc[] __initconst = {
856 {
857 .flags = IORESOURCE_IRQ,
858 .start = IRQ_MFP_FSCSI,
859 .end = IRQ_MFP_FSCSI,
860 },
861};
862
863static const struct resource atari_scsi_tt_rsrc[] __initconst = {
864 {
865 .flags = IORESOURCE_IRQ,
866 .start = IRQ_TT_MFP_SCSI,
867 .end = IRQ_TT_MFP_SCSI,
868 },
869};
870#endif
871
872/*
873 * Falcon IDE interface
874 */
875
876#define FALCON_IDE_BASE 0xfff00000
877
878static const struct resource atari_falconide_rsrc[] __initconst = {
879 DEFINE_RES_MEM(FALCON_IDE_BASE, 0x38),
880 DEFINE_RES_MEM(FALCON_IDE_BASE + 0x38, 2),
881};
882
883int __init atari_platform_init(void)
884{
885 struct platform_device *pdev;
886 int rv = 0;
887
888 if (!MACH_IS_ATARI)
889 return -ENODEV;
890
891#ifdef CONFIG_ATARI_ETHERNAT
892 {
893 unsigned char *enatc_virt;
894 enatc_virt = (unsigned char *)ioremap((ATARI_ETHERNAT_PHYS_ADDR+0x23), 0xf);
895 if (hwreg_present(enatc_virt)) {
896 rv = platform_add_devices(atari_ethernat_devices,
897 ARRAY_SIZE(atari_ethernat_devices));
898 }
899 iounmap(enatc_virt);
900 }
901#endif
902
903#ifdef CONFIG_ATARI_ETHERNEC
904 {
905 int error;
906 unsigned char *enec_virt;
907 enec_virt = (unsigned char *)ioremap((ATARI_ETHERNEC_PHYS_ADDR), 0xf);
908 if (hwreg_present(enec_virt)) {
909 error = platform_add_devices(atari_netusbee_devices,
910 ARRAY_SIZE(atari_netusbee_devices));
911 if (error && !rv)
912 rv = error;
913 }
914 iounmap(enec_virt);
915 }
916#endif
917
918#if IS_ENABLED(CONFIG_ATARI_SCSI)
919 if (ATARIHW_PRESENT(ST_SCSI))
920 platform_device_register_simple("atari_scsi", -1,
921 atari_scsi_st_rsrc, ARRAY_SIZE(atari_scsi_st_rsrc));
922 else if (ATARIHW_PRESENT(TT_SCSI))
923 platform_device_register_simple("atari_scsi", -1,
924 atari_scsi_tt_rsrc, ARRAY_SIZE(atari_scsi_tt_rsrc));
925#endif
926
927 if (ATARIHW_PRESENT(IDE)) {
928 pdev = platform_device_register_simple("atari-falcon-ide", -1,
929 atari_falconide_rsrc, ARRAY_SIZE(atari_falconide_rsrc));
930 if (IS_ERR(pdev))
931 rv = PTR_ERR(pdev);
932 }
933
934 return rv;
935}
936
937arch_initcall(atari_platform_init);
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
50u_long atari_mch_cookie;
51EXPORT_SYMBOL(atari_mch_cookie);
52
53u_long atari_mch_type;
54EXPORT_SYMBOL(atari_mch_type);
55
56struct atari_hw_present atari_hw_present;
57EXPORT_SYMBOL(atari_hw_present);
58
59u_long atari_switches;
60EXPORT_SYMBOL(atari_switches);
61
62int atari_dont_touch_floppy_select;
63EXPORT_SYMBOL(atari_dont_touch_floppy_select);
64
65int atari_rtc_year_offset;
66
67/* local function prototypes */
68static void atari_reset(void);
69static void atari_get_model(char *model);
70static void atari_get_hardware_list(struct seq_file *m);
71
72/* atari specific irq functions */
73extern void atari_init_IRQ (void);
74extern void atari_mksound(unsigned int count, unsigned int ticks);
75#ifdef CONFIG_HEARTBEAT
76static void atari_heartbeat(int on);
77#endif
78
79/* atari specific timer functions (in time.c) */
80extern void atari_sched_init(irq_handler_t);
81extern u32 atari_gettimeoffset(void);
82extern int atari_mste_hwclk (int, struct rtc_time *);
83extern int atari_tt_hwclk (int, struct rtc_time *);
84extern int atari_mste_set_clock_mmss (unsigned long);
85extern int atari_tt_set_clock_mmss (unsigned long);
86
87
88/* ++roman: This is a more elaborate test for an SCC chip, since the plain
89 * Medusa board generates DTACK at the SCC's standard addresses, but a SCC
90 * board in the Medusa is possible. Also, the addresses where the ST_ESCC
91 * resides generate DTACK without the chip, too.
92 * The method is to write values into the interrupt vector register, that
93 * should be readable without trouble (from channel A!).
94 */
95
96static int __init scc_test(volatile char *ctla)
97{
98 if (!hwreg_present(ctla))
99 return 0;
100 MFPDELAY();
101
102 *ctla = 2;
103 MFPDELAY();
104 *ctla = 0x40;
105 MFPDELAY();
106
107 *ctla = 2;
108 MFPDELAY();
109 if (*ctla != 0x40)
110 return 0;
111 MFPDELAY();
112
113 *ctla = 2;
114 MFPDELAY();
115 *ctla = 0x60;
116 MFPDELAY();
117
118 *ctla = 2;
119 MFPDELAY();
120 if (*ctla != 0x60)
121 return 0;
122
123 return 1;
124}
125
126
127 /*
128 * Parse an Atari-specific record in the bootinfo
129 */
130
131int __init atari_parse_bootinfo(const struct bi_record *record)
132{
133 int unknown = 0;
134 const void *data = record->data;
135
136 switch (be16_to_cpu(record->tag)) {
137 case BI_ATARI_MCH_COOKIE:
138 atari_mch_cookie = be32_to_cpup(data);
139 break;
140 case BI_ATARI_MCH_TYPE:
141 atari_mch_type = be32_to_cpup(data);
142 break;
143 default:
144 unknown = 1;
145 break;
146 }
147 return unknown;
148}
149
150
151/* Parse the Atari-specific switches= option. */
152static int __init atari_switches_setup(char *str)
153{
154 char switches[strlen(str) + 1];
155 char *p;
156 int ovsc_shift;
157 char *args = switches;
158
159 if (!MACH_IS_ATARI)
160 return 0;
161
162 /* copy string to local array, strsep works destructively... */
163 strcpy(switches, str);
164 atari_switches = 0;
165
166 /* parse the options */
167 while ((p = strsep(&args, ",")) != NULL) {
168 if (!*p)
169 continue;
170 ovsc_shift = 0;
171 if (strncmp(p, "ov_", 3) == 0) {
172 p += 3;
173 ovsc_shift = ATARI_SWITCH_OVSC_SHIFT;
174 }
175
176 if (strcmp(p, "ikbd") == 0) {
177 /* RTS line of IKBD ACIA */
178 atari_switches |= ATARI_SWITCH_IKBD << ovsc_shift;
179 } else if (strcmp(p, "midi") == 0) {
180 /* RTS line of MIDI ACIA */
181 atari_switches |= ATARI_SWITCH_MIDI << ovsc_shift;
182 } else if (strcmp(p, "snd6") == 0) {
183 atari_switches |= ATARI_SWITCH_SND6 << ovsc_shift;
184 } else if (strcmp(p, "snd7") == 0) {
185 atari_switches |= ATARI_SWITCH_SND7 << ovsc_shift;
186 }
187 }
188 return 0;
189}
190
191early_param("switches", atari_switches_setup);
192
193
194 /*
195 * Setup the Atari configuration info
196 */
197
198void __init config_atari(void)
199{
200 unsigned short tos_version;
201
202 memset(&atari_hw_present, 0, sizeof(atari_hw_present));
203
204 /* Change size of I/O space from 64KB to 4GB. */
205 ioport_resource.end = 0xFFFFFFFF;
206
207 mach_sched_init = atari_sched_init;
208 mach_init_IRQ = atari_init_IRQ;
209 mach_get_model = atari_get_model;
210 mach_get_hardware_list = atari_get_hardware_list;
211 arch_gettimeoffset = atari_gettimeoffset;
212 mach_reset = atari_reset;
213 mach_max_dma_address = 0xffffff;
214#if IS_ENABLED(CONFIG_INPUT_M68K_BEEP)
215 mach_beep = atari_mksound;
216#endif
217#ifdef CONFIG_HEARTBEAT
218 mach_heartbeat = atari_heartbeat;
219#endif
220
221 /* Set switches as requested by the user */
222 if (atari_switches & ATARI_SWITCH_IKBD)
223 acia.key_ctrl = ACIA_DIV64 | ACIA_D8N1S | ACIA_RHTID;
224 if (atari_switches & ATARI_SWITCH_MIDI)
225 acia.mid_ctrl = ACIA_DIV16 | ACIA_D8N1S | ACIA_RHTID;
226 if (atari_switches & (ATARI_SWITCH_SND6|ATARI_SWITCH_SND7)) {
227 sound_ym.rd_data_reg_sel = 14;
228 sound_ym.wd_data = sound_ym.rd_data_reg_sel |
229 ((atari_switches&ATARI_SWITCH_SND6) ? 0x40 : 0) |
230 ((atari_switches&ATARI_SWITCH_SND7) ? 0x80 : 0);
231 }
232
233 /* ++bjoern:
234 * Determine hardware present
235 */
236
237 pr_info("Atari hardware found:");
238 if (MACH_IS_MEDUSA) {
239 /* There's no Atari video hardware on the Medusa, but all the
240 * addresses below generate a DTACK so no bus error occurs! */
241 } else if (hwreg_present(f030_xreg)) {
242 ATARIHW_SET(VIDEL_SHIFTER);
243 pr_cont(" VIDEL");
244 /* This is a temporary hack: If there is Falcon video
245 * hardware, we assume that the ST-DMA serves SCSI instead of
246 * ACSI. In the future, there should be a better method for
247 * this...
248 */
249 ATARIHW_SET(ST_SCSI);
250 pr_cont(" STDMA-SCSI");
251 } else if (hwreg_present(tt_palette)) {
252 ATARIHW_SET(TT_SHIFTER);
253 pr_cont(" TT_SHIFTER");
254 } else if (hwreg_present(&shifter.bas_hi)) {
255 if (hwreg_present(&shifter.bas_lo) &&
256 (shifter.bas_lo = 0x0aau, shifter.bas_lo == 0x0aau)) {
257 ATARIHW_SET(EXTD_SHIFTER);
258 pr_cont(" EXTD_SHIFTER");
259 } else {
260 ATARIHW_SET(STND_SHIFTER);
261 pr_cont(" STND_SHIFTER");
262 }
263 }
264 if (hwreg_present(&st_mfp.par_dt_reg)) {
265 ATARIHW_SET(ST_MFP);
266 pr_cont(" ST_MFP");
267 }
268 if (hwreg_present(&tt_mfp.par_dt_reg)) {
269 ATARIHW_SET(TT_MFP);
270 pr_cont(" TT_MFP");
271 }
272 if (hwreg_present(&tt_scsi_dma.dma_addr_hi)) {
273 ATARIHW_SET(SCSI_DMA);
274 pr_cont(" TT_SCSI_DMA");
275 }
276 /*
277 * The ST-DMA address registers aren't readable
278 * on all Medusas, so the test below may fail
279 */
280 if (MACH_IS_MEDUSA ||
281 (hwreg_present(&st_dma.dma_vhi) &&
282 (st_dma.dma_vhi = 0x55) && (st_dma.dma_hi = 0xaa) &&
283 st_dma.dma_vhi == 0x55 && st_dma.dma_hi == 0xaa &&
284 (st_dma.dma_vhi = 0xaa) && (st_dma.dma_hi = 0x55) &&
285 st_dma.dma_vhi == 0xaa && st_dma.dma_hi == 0x55)) {
286 ATARIHW_SET(EXTD_DMA);
287 pr_cont(" EXTD_DMA");
288 }
289 if (hwreg_present(&tt_scsi.scsi_data)) {
290 ATARIHW_SET(TT_SCSI);
291 pr_cont(" TT_SCSI");
292 }
293 if (hwreg_present(&sound_ym.rd_data_reg_sel)) {
294 ATARIHW_SET(YM_2149);
295 pr_cont(" YM2149");
296 }
297 if (!MACH_IS_MEDUSA && hwreg_present(&tt_dmasnd.ctrl)) {
298 ATARIHW_SET(PCM_8BIT);
299 pr_cont(" PCM");
300 }
301 if (hwreg_present(&falcon_codec.unused5)) {
302 ATARIHW_SET(CODEC);
303 pr_cont(" CODEC");
304 }
305 if (hwreg_present(&dsp56k_host_interface.icr)) {
306 ATARIHW_SET(DSP56K);
307 pr_cont(" DSP56K");
308 }
309 if (hwreg_present(&tt_scc_dma.dma_ctrl) &&
310#if 0
311 /* This test sucks! Who knows some better? */
312 (tt_scc_dma.dma_ctrl = 0x01, (tt_scc_dma.dma_ctrl & 1) == 1) &&
313 (tt_scc_dma.dma_ctrl = 0x00, (tt_scc_dma.dma_ctrl & 1) == 0)
314#else
315 !MACH_IS_MEDUSA
316#endif
317 ) {
318 ATARIHW_SET(SCC_DMA);
319 pr_cont(" SCC_DMA");
320 }
321 if (scc_test(&atari_scc.cha_a_ctrl)) {
322 ATARIHW_SET(SCC);
323 pr_cont(" SCC");
324 }
325 if (scc_test(&st_escc.cha_b_ctrl)) {
326 ATARIHW_SET(ST_ESCC);
327 pr_cont(" ST_ESCC");
328 }
329 if (hwreg_present(&tt_scu.sys_mask)) {
330 ATARIHW_SET(SCU);
331 /* Assume a VME bus if there's a SCU */
332 ATARIHW_SET(VME);
333 pr_cont(" VME SCU");
334 }
335 if (hwreg_present((void *)(0xffff9210))) {
336 ATARIHW_SET(ANALOG_JOY);
337 pr_cont(" ANALOG_JOY");
338 }
339 if (hwreg_present(blitter.halftone)) {
340 ATARIHW_SET(BLITTER);
341 pr_cont(" BLITTER");
342 }
343 if (hwreg_present((void *)0xfff00039)) {
344 ATARIHW_SET(IDE);
345 pr_cont(" IDE");
346 }
347#if 1 /* This maybe wrong */
348 if (!MACH_IS_MEDUSA && hwreg_present(&tt_microwire.data) &&
349 hwreg_present(&tt_microwire.mask) &&
350 (tt_microwire.mask = 0x7ff,
351 udelay(1),
352 tt_microwire.data = MW_LM1992_PSG_HIGH | MW_LM1992_ADDR,
353 udelay(1),
354 tt_microwire.data != 0)) {
355 ATARIHW_SET(MICROWIRE);
356 while (tt_microwire.mask != 0x7ff)
357 ;
358 pr_cont(" MICROWIRE");
359 }
360#endif
361 if (hwreg_present(&tt_rtc.regsel)) {
362 ATARIHW_SET(TT_CLK);
363 pr_cont(" TT_CLK");
364 mach_hwclk = atari_tt_hwclk;
365 mach_set_clock_mmss = atari_tt_set_clock_mmss;
366 }
367 if (hwreg_present(&mste_rtc.sec_ones)) {
368 ATARIHW_SET(MSTE_CLK);
369 pr_cont(" MSTE_CLK");
370 mach_hwclk = atari_mste_hwclk;
371 mach_set_clock_mmss = atari_mste_set_clock_mmss;
372 }
373 if (!MACH_IS_MEDUSA && hwreg_present(&dma_wd.fdc_speed) &&
374 hwreg_write(&dma_wd.fdc_speed, 0)) {
375 ATARIHW_SET(FDCSPEED);
376 pr_cont(" FDC_SPEED");
377 }
378 if (!ATARIHW_PRESENT(ST_SCSI)) {
379 ATARIHW_SET(ACSI);
380 pr_cont(" ACSI");
381 }
382 pr_cont("\n");
383
384 if (CPU_IS_040_OR_060)
385 /* Now it seems to be safe to turn of the tt0 transparent
386 * translation (the one that must not be turned off in
387 * head.S...)
388 */
389 asm volatile ("\n"
390 " moveq #0,%%d0\n"
391 " .chip 68040\n"
392 " movec %%d0,%%itt0\n"
393 " movec %%d0,%%dtt0\n"
394 " .chip 68k"
395 : /* no outputs */
396 : /* no inputs */
397 : "d0");
398
399 /* allocator for memory that must reside in st-ram */
400 atari_stram_init();
401
402 /* Set up a mapping for the VMEbus address region:
403 *
404 * VME is either at phys. 0xfexxxxxx (TT) or 0xa00000..0xdfffff
405 * (MegaSTE) In both cases, the whole 16 MB chunk is mapped at
406 * 0xfe000000 virt., because this can be done with a single
407 * transparent translation. On the 68040, lots of often unused
408 * page tables would be needed otherwise. On a MegaSTE or similar,
409 * the highest byte is stripped off by hardware due to the 24 bit
410 * design of the bus.
411 */
412
413 if (CPU_IS_020_OR_030) {
414 unsigned long tt1_val;
415 tt1_val = 0xfe008543; /* Translate 0xfexxxxxx, enable, cache
416 * inhibit, read and write, FDC mask = 3,
417 * FDC val = 4 -> Supervisor only */
418 asm volatile ("\n"
419 " .chip 68030\n"
420 " pmove %0,%/tt1\n"
421 " .chip 68k"
422 : : "m" (tt1_val));
423 } else {
424 asm volatile ("\n"
425 " .chip 68040\n"
426 " movec %0,%%itt1\n"
427 " movec %0,%%dtt1\n"
428 " .chip 68k"
429 :
430 : "d" (0xfe00a040)); /* Translate 0xfexxxxxx, enable,
431 * supervisor only, non-cacheable/
432 * serialized, writable */
433
434 }
435
436 /* Fetch tos version at Physical 2 */
437 /*
438 * We my not be able to access this address if the kernel is
439 * loaded to st ram, since the first page is unmapped. On the
440 * Medusa this is always the case and there is nothing we can do
441 * about this, so we just assume the smaller offset. For the TT
442 * we use the fact that in head.S we have set up a mapping
443 * 0xFFxxxxxx -> 0x00xxxxxx, so that the first 16MB is accessible
444 * in the last 16MB of the address space.
445 */
446 tos_version = (MACH_IS_MEDUSA) ?
447 0xfff : *(unsigned short *)0xff000002;
448 atari_rtc_year_offset = (tos_version < 0x306) ? 70 : 68;
449}
450
451#ifdef CONFIG_HEARTBEAT
452static void atari_heartbeat(int on)
453{
454 unsigned char tmp;
455 unsigned long flags;
456
457 if (atari_dont_touch_floppy_select)
458 return;
459
460 local_irq_save(flags);
461 sound_ym.rd_data_reg_sel = 14; /* Select PSG Port A */
462 tmp = sound_ym.rd_data_reg_sel;
463 sound_ym.wd_data = on ? (tmp & ~0x02) : (tmp | 0x02);
464 local_irq_restore(flags);
465}
466#endif
467
468/* ++roman:
469 *
470 * This function does a reset on machines that lack the ability to
471 * assert the processor's _RESET signal somehow via hardware. It is
472 * based on the fact that you can find the initial SP and PC values
473 * after a reset at physical addresses 0 and 4. This works pretty well
474 * for Atari machines, since the lowest 8 bytes of physical memory are
475 * really ROM (mapped by hardware). For other 680x0 machines: don't
476 * know if it works...
477 *
478 * To get the values at addresses 0 and 4, the MMU better is turned
479 * off first. After that, we have to jump into physical address space
480 * (the PC before the pmove statement points to the virtual address of
481 * the code). Getting that physical address is not hard, but the code
482 * becomes a bit complex since I've tried to ensure that the jump
483 * statement after the pmove is in the cache already (otherwise the
484 * processor can't fetch it!). For that, the code first jumps to the
485 * jump statement with the (virtual) address of the pmove section in
486 * an address register . The jump statement is surely in the cache
487 * now. After that, that physical address of the reset code is loaded
488 * into the same address register, pmove is done and the same jump
489 * statements goes to the reset code. Since there are not many
490 * statements between the two jumps, I hope it stays in the cache.
491 *
492 * The C code makes heavy use of the GCC features that you can get the
493 * address of a C label. No hope to compile this with another compiler
494 * than GCC!
495 */
496
497/* ++andreas: no need for complicated code, just depend on prefetch */
498
499static void atari_reset(void)
500{
501 long tc_val = 0;
502 long reset_addr;
503
504 /*
505 * On the Medusa, phys. 0x4 may contain garbage because it's no
506 * ROM. See above for explanation why we cannot use PTOV(4).
507 */
508 reset_addr = MACH_IS_MEDUSA || MACH_IS_AB40 ? 0xe00030 :
509 *(unsigned long *) 0xff000004;
510
511 /* reset ACIA for switch off OverScan, if it's active */
512 if (atari_switches & ATARI_SWITCH_OVSC_IKBD)
513 acia.key_ctrl = ACIA_RESET;
514 if (atari_switches & ATARI_SWITCH_OVSC_MIDI)
515 acia.mid_ctrl = ACIA_RESET;
516
517 /* processor independent: turn off interrupts and reset the VBR;
518 * the caches must be left enabled, else prefetching the final jump
519 * instruction doesn't work.
520 */
521 local_irq_disable();
522 asm volatile ("movec %0,%%vbr"
523 : : "d" (0));
524
525 if (CPU_IS_040_OR_060) {
526 unsigned long jmp_addr040 = virt_to_phys(&&jmp_addr_label040);
527 if (CPU_IS_060) {
528 /* 68060: clear PCR to turn off superscalar operation */
529 asm volatile ("\n"
530 " .chip 68060\n"
531 " movec %0,%%pcr\n"
532 " .chip 68k"
533 : : "d" (0));
534 }
535
536 asm volatile ("\n"
537 " move.l %0,%%d0\n"
538 " and.l #0xff000000,%%d0\n"
539 " or.w #0xe020,%%d0\n" /* map 16 MB, enable, cacheable */
540 " .chip 68040\n"
541 " movec %%d0,%%itt0\n"
542 " movec %%d0,%%dtt0\n"
543 " .chip 68k\n"
544 " jmp %0@"
545 : : "a" (jmp_addr040)
546 : "d0");
547 jmp_addr_label040:
548 asm volatile ("\n"
549 " moveq #0,%%d0\n"
550 " nop\n"
551 " .chip 68040\n"
552 " cinva %%bc\n"
553 " nop\n"
554 " pflusha\n"
555 " nop\n"
556 " movec %%d0,%%tc\n"
557 " nop\n"
558 /* the following setup of transparent translations is needed on the
559 * Afterburner040 to successfully reboot. Other machines shouldn't
560 * care about a different tt regs setup, they also didn't care in
561 * the past that the regs weren't turned off. */
562 " move.l #0xffc000,%%d0\n" /* whole insn space cacheable */
563 " movec %%d0,%%itt0\n"
564 " movec %%d0,%%itt1\n"
565 " or.w #0x40,%/d0\n" /* whole data space non-cacheable/ser. */
566 " movec %%d0,%%dtt0\n"
567 " movec %%d0,%%dtt1\n"
568 " .chip 68k\n"
569 " jmp %0@"
570 : /* no outputs */
571 : "a" (reset_addr)
572 : "d0");
573 } else
574 asm volatile ("\n"
575 " pmove %0,%%tc\n"
576 " jmp %1@"
577 : /* no outputs */
578 : "m" (tc_val), "a" (reset_addr));
579}
580
581
582static void atari_get_model(char *model)
583{
584 strcpy(model, "Atari ");
585 switch (atari_mch_cookie >> 16) {
586 case ATARI_MCH_ST:
587 if (ATARIHW_PRESENT(MSTE_CLK))
588 strcat(model, "Mega ST");
589 else
590 strcat(model, "ST");
591 break;
592 case ATARI_MCH_STE:
593 if (MACH_IS_MSTE)
594 strcat(model, "Mega STE");
595 else
596 strcat(model, "STE");
597 break;
598 case ATARI_MCH_TT:
599 if (MACH_IS_MEDUSA)
600 /* Medusa has TT _MCH cookie */
601 strcat(model, "Medusa");
602 else
603 strcat(model, "TT");
604 break;
605 case ATARI_MCH_FALCON:
606 strcat(model, "Falcon");
607 if (MACH_IS_AB40)
608 strcat(model, " (with Afterburner040)");
609 break;
610 default:
611 sprintf(model + strlen(model), "(unknown mach cookie 0x%lx)",
612 atari_mch_cookie);
613 break;
614 }
615}
616
617
618static void atari_get_hardware_list(struct seq_file *m)
619{
620 int i;
621
622 for (i = 0; i < m68k_num_memory; i++)
623 seq_printf(m, "\t%3ld MB at 0x%08lx (%s)\n",
624 m68k_memory[i].size >> 20, m68k_memory[i].addr,
625 (m68k_memory[i].addr & 0xff000000 ?
626 "alternate RAM" : "ST-RAM"));
627
628#define ATARIHW_ANNOUNCE(name, str) \
629 if (ATARIHW_PRESENT(name)) \
630 seq_printf(m, "\t%s\n", str)
631
632 seq_puts(m, "Detected hardware:\n");
633 ATARIHW_ANNOUNCE(STND_SHIFTER, "ST Shifter");
634 ATARIHW_ANNOUNCE(EXTD_SHIFTER, "STe Shifter");
635 ATARIHW_ANNOUNCE(TT_SHIFTER, "TT Shifter");
636 ATARIHW_ANNOUNCE(VIDEL_SHIFTER, "Falcon Shifter");
637 ATARIHW_ANNOUNCE(YM_2149, "Programmable Sound Generator");
638 ATARIHW_ANNOUNCE(PCM_8BIT, "PCM 8 Bit Sound");
639 ATARIHW_ANNOUNCE(CODEC, "CODEC Sound");
640 ATARIHW_ANNOUNCE(TT_SCSI, "SCSI Controller NCR5380 (TT style)");
641 ATARIHW_ANNOUNCE(ST_SCSI, "SCSI Controller NCR5380 (Falcon style)");
642 ATARIHW_ANNOUNCE(ACSI, "ACSI Interface");
643 ATARIHW_ANNOUNCE(IDE, "IDE Interface");
644 ATARIHW_ANNOUNCE(FDCSPEED, "8/16 Mhz Switch for FDC");
645 ATARIHW_ANNOUNCE(ST_MFP, "Multi Function Peripheral MFP 68901");
646 ATARIHW_ANNOUNCE(TT_MFP, "Second Multi Function Peripheral MFP 68901");
647 ATARIHW_ANNOUNCE(SCC, "Serial Communications Controller SCC 8530");
648 ATARIHW_ANNOUNCE(ST_ESCC, "Extended Serial Communications Controller SCC 85230");
649 ATARIHW_ANNOUNCE(ANALOG_JOY, "Paddle Interface");
650 ATARIHW_ANNOUNCE(MICROWIRE, "MICROWIRE(tm) Interface");
651 ATARIHW_ANNOUNCE(STND_DMA, "DMA Controller (24 bit)");
652 ATARIHW_ANNOUNCE(EXTD_DMA, "DMA Controller (32 bit)");
653 ATARIHW_ANNOUNCE(SCSI_DMA, "DMA Controller for NCR5380");
654 ATARIHW_ANNOUNCE(SCC_DMA, "DMA Controller for SCC");
655 ATARIHW_ANNOUNCE(TT_CLK, "Clock Chip MC146818A");
656 ATARIHW_ANNOUNCE(MSTE_CLK, "Clock Chip RP5C15");
657 ATARIHW_ANNOUNCE(SCU, "System Control Unit");
658 ATARIHW_ANNOUNCE(BLITTER, "Blitter");
659 ATARIHW_ANNOUNCE(VME, "VME Bus");
660 ATARIHW_ANNOUNCE(DSP56K, "DSP56001 processor");
661}
662
663/*
664 * MSch: initial platform device support for Atari,
665 * required for EtherNAT/EtherNEC/NetUSBee drivers
666 */
667
668#if defined(CONFIG_ATARI_ETHERNAT) || defined(CONFIG_ATARI_ETHERNEC)
669static void isp1160_delay(struct device *dev, int delay)
670{
671 ndelay(delay);
672}
673#endif
674
675#ifdef CONFIG_ATARI_ETHERNAT
676/*
677 * EtherNAT: SMC91C111 Ethernet chipset, handled by smc91x driver
678 */
679
680#define ATARI_ETHERNAT_IRQ 140
681
682static struct resource smc91x_resources[] = {
683 [0] = {
684 .name = "smc91x-regs",
685 .start = ATARI_ETHERNAT_PHYS_ADDR,
686 .end = ATARI_ETHERNAT_PHYS_ADDR + 0xfffff,
687 .flags = IORESOURCE_MEM,
688 },
689 [1] = {
690 .name = "smc91x-irq",
691 .start = ATARI_ETHERNAT_IRQ,
692 .end = ATARI_ETHERNAT_IRQ,
693 .flags = IORESOURCE_IRQ,
694 },
695};
696
697static struct platform_device smc91x_device = {
698 .name = "smc91x",
699 .id = -1,
700 .num_resources = ARRAY_SIZE(smc91x_resources),
701 .resource = smc91x_resources,
702};
703
704/*
705 * ISP 1160 - using the isp116x-hcd module
706 */
707
708#define ATARI_USB_PHYS_ADDR 0x80000012
709#define ATARI_USB_IRQ 139
710
711static struct resource isp1160_resources[] = {
712 [0] = {
713 .name = "isp1160-data",
714 .start = ATARI_USB_PHYS_ADDR,
715 .end = ATARI_USB_PHYS_ADDR + 0x1,
716 .flags = IORESOURCE_MEM,
717 },
718 [1] = {
719 .name = "isp1160-regs",
720 .start = ATARI_USB_PHYS_ADDR + 0x4,
721 .end = ATARI_USB_PHYS_ADDR + 0x5,
722 .flags = IORESOURCE_MEM,
723 },
724 [2] = {
725 .name = "isp1160-irq",
726 .start = ATARI_USB_IRQ,
727 .end = ATARI_USB_IRQ,
728 .flags = IORESOURCE_IRQ,
729 },
730};
731
732/* (DataBusWidth16|AnalogOCEnable|DREQOutputPolarity|DownstreamPort15KRSel ) */
733static struct isp116x_platform_data isp1160_platform_data = {
734 /* Enable internal resistors on downstream ports */
735 .sel15Kres = 1,
736 /* On-chip overcurrent protection */
737 .oc_enable = 1,
738 /* INT output polarity */
739 .int_act_high = 1,
740 /* INT edge or level triggered */
741 .int_edge_triggered = 0,
742
743 /* WAKEUP pin connected - NOT SUPPORTED */
744 /* .remote_wakeup_connected = 0, */
745 /* Wakeup by devices on usb bus enabled */
746 .remote_wakeup_enable = 0,
747 .delay = isp1160_delay,
748};
749
750static struct platform_device isp1160_device = {
751 .name = "isp116x-hcd",
752 .id = 0,
753 .num_resources = ARRAY_SIZE(isp1160_resources),
754 .resource = isp1160_resources,
755 .dev = {
756 .platform_data = &isp1160_platform_data,
757 },
758};
759
760static struct platform_device *atari_ethernat_devices[] __initdata = {
761 &smc91x_device,
762 &isp1160_device
763};
764#endif /* CONFIG_ATARI_ETHERNAT */
765
766#ifdef CONFIG_ATARI_ETHERNEC
767/*
768 * EtherNEC: RTL8019 (NE2000 compatible) Ethernet chipset,
769 * handled by ne.c driver
770 */
771
772#define ATARI_ETHERNEC_PHYS_ADDR 0xfffa0000
773#define ATARI_ETHERNEC_BASE 0x300
774#define ATARI_ETHERNEC_IRQ IRQ_MFP_TIMER1
775
776static struct resource rtl8019_resources[] = {
777 [0] = {
778 .name = "rtl8019-regs",
779 .start = ATARI_ETHERNEC_BASE,
780 .end = ATARI_ETHERNEC_BASE + 0x20 - 1,
781 .flags = IORESOURCE_IO,
782 },
783 [1] = {
784 .name = "rtl8019-irq",
785 .start = ATARI_ETHERNEC_IRQ,
786 .end = ATARI_ETHERNEC_IRQ,
787 .flags = IORESOURCE_IRQ,
788 },
789};
790
791static struct platform_device rtl8019_device = {
792 .name = "ne",
793 .id = -1,
794 .num_resources = ARRAY_SIZE(rtl8019_resources),
795 .resource = rtl8019_resources,
796};
797
798/*
799 * NetUSBee: ISP1160 USB host adapter via ROM-port adapter
800 */
801
802#define ATARI_NETUSBEE_PHYS_ADDR 0xfffa8000
803#define ATARI_NETUSBEE_BASE 0x340
804#define ATARI_NETUSBEE_IRQ IRQ_MFP_TIMER2
805
806static struct resource netusbee_resources[] = {
807 [0] = {
808 .name = "isp1160-data",
809 .start = ATARI_NETUSBEE_BASE,
810 .end = ATARI_NETUSBEE_BASE + 0x1,
811 .flags = IORESOURCE_MEM,
812 },
813 [1] = {
814 .name = "isp1160-regs",
815 .start = ATARI_NETUSBEE_BASE + 0x20,
816 .end = ATARI_NETUSBEE_BASE + 0x21,
817 .flags = IORESOURCE_MEM,
818 },
819 [2] = {
820 .name = "isp1160-irq",
821 .start = ATARI_NETUSBEE_IRQ,
822 .end = ATARI_NETUSBEE_IRQ,
823 .flags = IORESOURCE_IRQ,
824 },
825};
826
827/* (DataBusWidth16|AnalogOCEnable|DREQOutputPolarity|DownstreamPort15KRSel ) */
828static struct isp116x_platform_data netusbee_platform_data = {
829 /* Enable internal resistors on downstream ports */
830 .sel15Kres = 1,
831 /* On-chip overcurrent protection */
832 .oc_enable = 1,
833 /* INT output polarity */
834 .int_act_high = 1,
835 /* INT edge or level triggered */
836 .int_edge_triggered = 0,
837
838 /* WAKEUP pin connected - NOT SUPPORTED */
839 /* .remote_wakeup_connected = 0, */
840 /* Wakeup by devices on usb bus enabled */
841 .remote_wakeup_enable = 0,
842 .delay = isp1160_delay,
843};
844
845static struct platform_device netusbee_device = {
846 .name = "isp116x-hcd",
847 .id = 1,
848 .num_resources = ARRAY_SIZE(netusbee_resources),
849 .resource = netusbee_resources,
850 .dev = {
851 .platform_data = &netusbee_platform_data,
852 },
853};
854
855static struct platform_device *atari_netusbee_devices[] __initdata = {
856 &rtl8019_device,
857 &netusbee_device
858};
859#endif /* CONFIG_ATARI_ETHERNEC */
860
861#if IS_ENABLED(CONFIG_ATARI_SCSI)
862static const struct resource atari_scsi_st_rsrc[] __initconst = {
863 {
864 .flags = IORESOURCE_IRQ,
865 .start = IRQ_MFP_FSCSI,
866 .end = IRQ_MFP_FSCSI,
867 },
868};
869
870static const struct resource atari_scsi_tt_rsrc[] __initconst = {
871 {
872 .flags = IORESOURCE_IRQ,
873 .start = IRQ_TT_MFP_SCSI,
874 .end = IRQ_TT_MFP_SCSI,
875 },
876};
877#endif
878
879int __init atari_platform_init(void)
880{
881 int rv = 0;
882
883 if (!MACH_IS_ATARI)
884 return -ENODEV;
885
886#ifdef CONFIG_ATARI_ETHERNAT
887 {
888 unsigned char *enatc_virt;
889 enatc_virt = (unsigned char *)ioremap((ATARI_ETHERNAT_PHYS_ADDR+0x23), 0xf);
890 if (hwreg_present(enatc_virt)) {
891 rv = platform_add_devices(atari_ethernat_devices,
892 ARRAY_SIZE(atari_ethernat_devices));
893 }
894 iounmap(enatc_virt);
895 }
896#endif
897
898#ifdef CONFIG_ATARI_ETHERNEC
899 {
900 int error;
901 unsigned char *enec_virt;
902 enec_virt = (unsigned char *)ioremap((ATARI_ETHERNEC_PHYS_ADDR), 0xf);
903 if (hwreg_present(enec_virt)) {
904 error = platform_add_devices(atari_netusbee_devices,
905 ARRAY_SIZE(atari_netusbee_devices));
906 if (error && !rv)
907 rv = error;
908 }
909 iounmap(enec_virt);
910 }
911#endif
912
913#if IS_ENABLED(CONFIG_ATARI_SCSI)
914 if (ATARIHW_PRESENT(ST_SCSI))
915 platform_device_register_simple("atari_scsi", -1,
916 atari_scsi_st_rsrc, ARRAY_SIZE(atari_scsi_st_rsrc));
917 else if (ATARIHW_PRESENT(TT_SCSI))
918 platform_device_register_simple("atari_scsi", -1,
919 atari_scsi_tt_rsrc, ARRAY_SIZE(atari_scsi_tt_rsrc));
920#endif
921
922 return rv;
923}
924
925arch_initcall(atari_platform_init);