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