Commit | Line | Data |
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1da177e4 LT |
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 | ||
1da177e4 LT |
27 | #include <linux/types.h> |
28 | #include <linux/mm.h> | |
813dcf7a | 29 | #include <linux/seq_file.h> |
1da177e4 LT |
30 | #include <linux/console.h> |
31 | #include <linux/init.h> | |
32 | #include <linux/delay.h> | |
33 | #include <linux/ioport.h> | |
736b24db | 34 | #include <linux/platform_device.h> |
01a18d16 | 35 | #include <linux/usb/isp116x.h> |
1da177e4 | 36 | #include <linux/vt_kern.h> |
a3b2004a | 37 | #include <linux/module.h> |
1da177e4 LT |
38 | |
39 | #include <asm/bootinfo.h> | |
4c3c522b | 40 | #include <asm/bootinfo-atari.h> |
abe48101 | 41 | #include <asm/byteorder.h> |
1da177e4 LT |
42 | #include <asm/setup.h> |
43 | #include <asm/atarihw.h> | |
44 | #include <asm/atariints.h> | |
45 | #include <asm/atari_stram.h> | |
1da177e4 LT |
46 | #include <asm/machdep.h> |
47 | #include <asm/hwtest.h> | |
48 | #include <asm/io.h> | |
49 | ||
50 | u_long atari_mch_cookie; | |
a3b2004a AB |
51 | EXPORT_SYMBOL(atari_mch_cookie); |
52 | ||
1da177e4 | 53 | u_long atari_mch_type; |
a3b2004a AB |
54 | EXPORT_SYMBOL(atari_mch_type); |
55 | ||
1da177e4 | 56 | struct atari_hw_present atari_hw_present; |
a3b2004a AB |
57 | EXPORT_SYMBOL(atari_hw_present); |
58 | ||
1da177e4 | 59 | u_long atari_switches; |
a3b2004a AB |
60 | EXPORT_SYMBOL(atari_switches); |
61 | ||
1da177e4 | 62 | int atari_dont_touch_floppy_select; |
a3b2004a AB |
63 | EXPORT_SYMBOL(atari_dont_touch_floppy_select); |
64 | ||
1da177e4 LT |
65 | int atari_rtc_year_offset; |
66 | ||
67 | /* local function prototypes */ | |
6ff5801a | 68 | static void atari_reset(void); |
1da177e4 | 69 | static void atari_get_model(char *model); |
813dcf7a | 70 | static void atari_get_hardware_list(struct seq_file *m); |
1da177e4 LT |
71 | |
72 | /* atari specific irq functions */ | |
73 | extern void atari_init_IRQ (void); | |
6ff5801a | 74 | extern void atari_mksound(unsigned int count, unsigned int ticks); |
1da177e4 | 75 | #ifdef CONFIG_HEARTBEAT |
6ff5801a | 76 | static void atari_heartbeat(int on); |
1da177e4 LT |
77 | #endif |
78 | ||
79 | /* atari specific timer functions (in time.c) */ | |
6ff5801a | 80 | extern void atari_sched_init(irq_handler_t); |
c8d5ba18 | 81 | extern u32 atari_gettimeoffset(void); |
1da177e4 LT |
82 | extern int atari_mste_hwclk (int, struct rtc_time *); |
83 | extern int atari_tt_hwclk (int, struct rtc_time *); | |
84 | extern int atari_mste_set_clock_mmss (unsigned long); | |
85 | extern int atari_tt_set_clock_mmss (unsigned long); | |
86 | ||
1da177e4 | 87 | |
1da177e4 LT |
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 | ||
6ff5801a | 96 | static int __init scc_test(volatile char *ctla) |
1da177e4 | 97 | { |
6ff5801a RZ |
98 | if (!hwreg_present(ctla)) |
99 | return 0; | |
1da177e4 LT |
100 | MFPDELAY(); |
101 | ||
6ff5801a RZ |
102 | *ctla = 2; |
103 | MFPDELAY(); | |
104 | *ctla = 0x40; | |
105 | MFPDELAY(); | |
1da177e4 | 106 | |
6ff5801a RZ |
107 | *ctla = 2; |
108 | MFPDELAY(); | |
109 | if (*ctla != 0x40) | |
110 | return 0; | |
1da177e4 LT |
111 | MFPDELAY(); |
112 | ||
6ff5801a RZ |
113 | *ctla = 2; |
114 | MFPDELAY(); | |
115 | *ctla = 0x60; | |
116 | MFPDELAY(); | |
1da177e4 | 117 | |
6ff5801a RZ |
118 | *ctla = 2; |
119 | MFPDELAY(); | |
120 | if (*ctla != 0x60) | |
121 | return 0; | |
1da177e4 | 122 | |
6ff5801a | 123 | return 1; |
1da177e4 LT |
124 | } |
125 | ||
126 | ||
127 | /* | |
128 | * Parse an Atari-specific record in the bootinfo | |
129 | */ | |
130 | ||
131 | int __init atari_parse_bootinfo(const struct bi_record *record) | |
132 | { | |
6ff5801a | 133 | int unknown = 0; |
abe48101 | 134 | const void *data = record->data; |
1da177e4 | 135 | |
abe48101 | 136 | switch (be16_to_cpu(record->tag)) { |
1da177e4 | 137 | case BI_ATARI_MCH_COOKIE: |
abe48101 | 138 | atari_mch_cookie = be32_to_cpup(data); |
6ff5801a | 139 | break; |
1da177e4 | 140 | case BI_ATARI_MCH_TYPE: |
abe48101 | 141 | atari_mch_type = be32_to_cpup(data); |
6ff5801a | 142 | break; |
1da177e4 | 143 | default: |
6ff5801a RZ |
144 | unknown = 1; |
145 | break; | |
146 | } | |
147 | return unknown; | |
1da177e4 LT |
148 | } |
149 | ||
150 | ||
151 | /* Parse the Atari-specific switches= option. */ | |
d6713b40 | 152 | static int __init atari_switches_setup(char *str) |
1da177e4 | 153 | { |
d6713b40 | 154 | char switches[strlen(str) + 1]; |
6ff5801a RZ |
155 | char *p; |
156 | int ovsc_shift; | |
157 | char *args = switches; | |
158 | ||
d6713b40 RZ |
159 | if (!MACH_IS_ATARI) |
160 | return 0; | |
161 | ||
6ff5801a | 162 | /* copy string to local array, strsep works destructively... */ |
d6713b40 | 163 | strcpy(switches, str); |
6ff5801a RZ |
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 | } | |
1da177e4 | 187 | } |
d6713b40 | 188 | return 0; |
1da177e4 LT |
189 | } |
190 | ||
d6713b40 RZ |
191 | early_param("switches", atari_switches_setup); |
192 | ||
1da177e4 LT |
193 | |
194 | /* | |
195 | * Setup the Atari configuration info | |
196 | */ | |
197 | ||
198 | void __init config_atari(void) | |
199 | { | |
6ff5801a | 200 | unsigned short tos_version; |
1da177e4 | 201 | |
6ff5801a | 202 | memset(&atari_hw_present, 0, sizeof(atari_hw_present)); |
1da177e4 | 203 | |
6ff5801a RZ |
204 | /* Change size of I/O space from 64KB to 4GB. */ |
205 | ioport_resource.end = 0xFFFFFFFF; | |
1da177e4 | 206 | |
6ff5801a RZ |
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; | |
c8d5ba18 | 211 | arch_gettimeoffset = atari_gettimeoffset; |
6ff5801a RZ |
212 | mach_reset = atari_reset; |
213 | mach_max_dma_address = 0xffffff; | |
1da177e4 | 214 | #if defined(CONFIG_INPUT_M68K_BEEP) || defined(CONFIG_INPUT_M68K_BEEP_MODULE) |
6ff5801a | 215 | mach_beep = atari_mksound; |
1da177e4 LT |
216 | #endif |
217 | #ifdef CONFIG_HEARTBEAT | |
6ff5801a | 218 | mach_heartbeat = atari_heartbeat; |
1da177e4 LT |
219 | #endif |
220 | ||
6ff5801a RZ |
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 | } | |
1da177e4 | 232 | |
6ff5801a RZ |
233 | /* ++bjoern: |
234 | * Determine hardware present | |
235 | */ | |
236 | ||
237 | printk("Atari hardware found: "); | |
29c8a246 | 238 | if (MACH_IS_MEDUSA) { |
6ff5801a RZ |
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 | printk("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 | printk("STDMA-SCSI "); | |
251 | } else if (hwreg_present(tt_palette)) { | |
252 | ATARIHW_SET(TT_SHIFTER); | |
253 | printk("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 | printk("EXTD_SHIFTER "); | |
259 | } else { | |
260 | ATARIHW_SET(STND_SHIFTER); | |
261 | printk("STND_SHIFTER "); | |
262 | } | |
263 | } | |
3d92e8f3 | 264 | if (hwreg_present(&st_mfp.par_dt_reg)) { |
6ff5801a RZ |
265 | ATARIHW_SET(ST_MFP); |
266 | printk("ST_MFP "); | |
267 | } | |
268 | if (hwreg_present(&tt_mfp.par_dt_reg)) { | |
269 | ATARIHW_SET(TT_MFP); | |
270 | printk("TT_MFP "); | |
271 | } | |
272 | if (hwreg_present(&tt_scsi_dma.dma_addr_hi)) { | |
273 | ATARIHW_SET(SCSI_DMA); | |
274 | printk("TT_SCSI_DMA "); | |
275 | } | |
6ff5801a RZ |
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 | printk("EXTD_DMA "); | |
288 | } | |
289 | if (hwreg_present(&tt_scsi.scsi_data)) { | |
290 | ATARIHW_SET(TT_SCSI); | |
291 | printk("TT_SCSI "); | |
292 | } | |
293 | if (hwreg_present(&sound_ym.rd_data_reg_sel)) { | |
294 | ATARIHW_SET(YM_2149); | |
295 | printk("YM2149 "); | |
296 | } | |
29c8a246 | 297 | if (!MACH_IS_MEDUSA && hwreg_present(&tt_dmasnd.ctrl)) { |
6ff5801a RZ |
298 | ATARIHW_SET(PCM_8BIT); |
299 | printk("PCM "); | |
300 | } | |
29c8a246 | 301 | if (hwreg_present(&falcon_codec.unused5)) { |
6ff5801a RZ |
302 | ATARIHW_SET(CODEC); |
303 | printk("CODEC "); | |
304 | } | |
305 | if (hwreg_present(&dsp56k_host_interface.icr)) { | |
306 | ATARIHW_SET(DSP56K); | |
307 | printk("DSP56K "); | |
308 | } | |
309 | if (hwreg_present(&tt_scc_dma.dma_ctrl) && | |
1da177e4 | 310 | #if 0 |
6ff5801a RZ |
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) | |
1da177e4 | 314 | #else |
29c8a246 | 315 | !MACH_IS_MEDUSA |
1da177e4 | 316 | #endif |
6ff5801a RZ |
317 | ) { |
318 | ATARIHW_SET(SCC_DMA); | |
319 | printk("SCC_DMA "); | |
320 | } | |
de339e4b | 321 | if (scc_test(&atari_scc.cha_a_ctrl)) { |
6ff5801a RZ |
322 | ATARIHW_SET(SCC); |
323 | printk("SCC "); | |
324 | } | |
325 | if (scc_test(&st_escc.cha_b_ctrl)) { | |
326 | ATARIHW_SET(ST_ESCC); | |
327 | printk("ST_ESCC "); | |
328 | } | |
29c8a246 | 329 | if (hwreg_present(&tt_scu.sys_mask)) { |
6ff5801a RZ |
330 | ATARIHW_SET(SCU); |
331 | /* Assume a VME bus if there's a SCU */ | |
332 | ATARIHW_SET(VME); | |
333 | printk("VME SCU "); | |
334 | } | |
335 | if (hwreg_present((void *)(0xffff9210))) { | |
336 | ATARIHW_SET(ANALOG_JOY); | |
337 | printk("ANALOG_JOY "); | |
338 | } | |
29c8a246 | 339 | if (hwreg_present(blitter.halftone)) { |
6ff5801a RZ |
340 | ATARIHW_SET(BLITTER); |
341 | printk("BLITTER "); | |
342 | } | |
343 | if (hwreg_present((void *)0xfff00039)) { | |
344 | ATARIHW_SET(IDE); | |
345 | printk("IDE "); | |
346 | } | |
1da177e4 | 347 | #if 1 /* This maybe wrong */ |
29c8a246 | 348 | if (!MACH_IS_MEDUSA && hwreg_present(&tt_microwire.data) && |
6ff5801a RZ |
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 | printk("MICROWIRE "); | |
359 | } | |
1da177e4 | 360 | #endif |
6ff5801a RZ |
361 | if (hwreg_present(&tt_rtc.regsel)) { |
362 | ATARIHW_SET(TT_CLK); | |
363 | printk("TT_CLK "); | |
364 | mach_hwclk = atari_tt_hwclk; | |
365 | mach_set_clock_mmss = atari_tt_set_clock_mmss; | |
366 | } | |
29c8a246 | 367 | if (hwreg_present(&mste_rtc.sec_ones)) { |
6ff5801a RZ |
368 | ATARIHW_SET(MSTE_CLK); |
369 | printk("MSTE_CLK "); | |
370 | mach_hwclk = atari_mste_hwclk; | |
371 | mach_set_clock_mmss = atari_mste_set_clock_mmss; | |
372 | } | |
29c8a246 | 373 | if (!MACH_IS_MEDUSA && hwreg_present(&dma_wd.fdc_speed) && |
6ff5801a RZ |
374 | hwreg_write(&dma_wd.fdc_speed, 0)) { |
375 | ATARIHW_SET(FDCSPEED); | |
376 | printk("FDC_SPEED "); | |
377 | } | |
29c8a246 | 378 | if (!ATARIHW_PRESENT(ST_SCSI)) { |
6ff5801a RZ |
379 | ATARIHW_SET(ACSI); |
380 | printk("ACSI "); | |
381 | } | |
382 | printk("\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" | |
2a353506 | 420 | " pmove %0,%/tt1\n" |
6ff5801a | 421 | " .chip 68k" |
2a353506 | 422 | : : "m" (tt1_val)); |
6ff5801a RZ |
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 | } | |
1da177e4 | 435 | |
6ff5801a RZ |
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 | */ | |
29c8a246 | 446 | tos_version = (MACH_IS_MEDUSA) ? |
6ff5801a RZ |
447 | 0xfff : *(unsigned short *)0xff000002; |
448 | atari_rtc_year_offset = (tos_version < 0x306) ? 70 : 68; | |
1da177e4 LT |
449 | } |
450 | ||
451 | #ifdef CONFIG_HEARTBEAT | |
6ff5801a | 452 | static void atari_heartbeat(int on) |
1da177e4 | 453 | { |
6ff5801a RZ |
454 | unsigned char tmp; |
455 | unsigned long flags; | |
1da177e4 | 456 | |
6ff5801a RZ |
457 | if (atari_dont_touch_floppy_select) |
458 | return; | |
1da177e4 | 459 | |
6ff5801a RZ |
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); | |
1da177e4 LT |
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 | ||
6ff5801a | 499 | static void atari_reset(void) |
1da177e4 | 500 | { |
6ff5801a RZ |
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 | */ | |
29c8a246 | 508 | reset_addr = MACH_IS_MEDUSA || MACH_IS_AB40 ? 0xe00030 : |
6ff5801a RZ |
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" | |
2a353506 | 575 | " pmove %0,%%tc\n" |
6ff5801a RZ |
576 | " jmp %1@" |
577 | : /* no outputs */ | |
2a353506 | 578 | : "m" (tc_val), "a" (reset_addr)); |
1da177e4 LT |
579 | } |
580 | ||
581 | ||
582 | static void atari_get_model(char *model) | |
583 | { | |
6ff5801a RZ |
584 | strcpy(model, "Atari "); |
585 | switch (atari_mch_cookie >> 16) { | |
1da177e4 | 586 | case ATARI_MCH_ST: |
6ff5801a RZ |
587 | if (ATARIHW_PRESENT(MSTE_CLK)) |
588 | strcat(model, "Mega ST"); | |
589 | else | |
590 | strcat(model, "ST"); | |
591 | break; | |
1da177e4 | 592 | case ATARI_MCH_STE: |
6ff5801a RZ |
593 | if (MACH_IS_MSTE) |
594 | strcat(model, "Mega STE"); | |
595 | else | |
596 | strcat(model, "STE"); | |
597 | break; | |
1da177e4 | 598 | case ATARI_MCH_TT: |
6ff5801a RZ |
599 | if (MACH_IS_MEDUSA) |
600 | /* Medusa has TT _MCH cookie */ | |
601 | strcat(model, "Medusa"); | |
6ff5801a RZ |
602 | else |
603 | strcat(model, "TT"); | |
604 | break; | |
1da177e4 | 605 | case ATARI_MCH_FALCON: |
6ff5801a RZ |
606 | strcat(model, "Falcon"); |
607 | if (MACH_IS_AB40) | |
608 | strcat(model, " (with Afterburner040)"); | |
609 | break; | |
1da177e4 | 610 | default: |
6ff5801a RZ |
611 | sprintf(model + strlen(model), "(unknown mach cookie 0x%lx)", |
612 | atari_mch_cookie); | |
613 | break; | |
614 | } | |
1da177e4 LT |
615 | } |
616 | ||
617 | ||
813dcf7a | 618 | static void atari_get_hardware_list(struct seq_file *m) |
1da177e4 | 619 | { |
813dcf7a | 620 | int i; |
6ff5801a RZ |
621 | |
622 | for (i = 0; i < m68k_num_memory; i++) | |
813dcf7a | 623 | seq_printf(m, "\t%3ld MB at 0x%08lx (%s)\n", |
6ff5801a RZ |
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)) \ | |
813dcf7a | 630 | seq_printf(m, "\t%s\n", str) |
6ff5801a | 631 | |
813dcf7a | 632 | seq_printf(m, "Detected hardware:\n"); |
6ff5801a RZ |
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"); | |
1da177e4 | 661 | } |
736b24db MS |
662 | |
663 | /* | |
664 | * MSch: initial platform device support for Atari, | |
01a18d16 | 665 | * required for EtherNAT/EtherNEC/NetUSBee drivers |
736b24db MS |
666 | */ |
667 | ||
01a18d16 MS |
668 | #if defined(CONFIG_ATARI_ETHERNAT) || defined(CONFIG_ATARI_ETHERNEC) |
669 | static void isp1160_delay(struct device *dev, int delay) | |
670 | { | |
671 | ndelay(delay); | |
672 | } | |
673 | #endif | |
674 | ||
736b24db MS |
675 | #ifdef CONFIG_ATARI_ETHERNAT |
676 | /* | |
677 | * EtherNAT: SMC91C111 Ethernet chipset, handled by smc91x driver | |
678 | */ | |
679 | ||
680 | #define ATARI_ETHERNAT_IRQ 140 | |
681 | ||
682 | static 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 | ||
697 | static struct platform_device smc91x_device = { | |
698 | .name = "smc91x", | |
699 | .id = -1, | |
700 | .num_resources = ARRAY_SIZE(smc91x_resources), | |
701 | .resource = smc91x_resources, | |
702 | }; | |
703 | ||
01a18d16 MS |
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 | ||
711 | static 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 ) */ | |
733 | static 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 | ||
750 | static 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 | ||
736b24db | 760 | static struct platform_device *atari_ethernat_devices[] __initdata = { |
01a18d16 MS |
761 | &smc91x_device, |
762 | &isp1160_device | |
736b24db MS |
763 | }; |
764 | #endif /* CONFIG_ATARI_ETHERNAT */ | |
765 | ||
1d87a8f2 MS |
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 | ||
776 | static 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 | ||
791 | static struct platform_device rtl8019_device = { | |
792 | .name = "ne", | |
793 | .id = -1, | |
794 | .num_resources = ARRAY_SIZE(rtl8019_resources), | |
795 | .resource = rtl8019_resources, | |
796 | }; | |
797 | ||
01a18d16 MS |
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 | ||
806 | static 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 ) */ | |
828 | static 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 | ||
845 | static 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 | ||
855 | static struct platform_device *atari_netusbee_devices[] __initdata = { | |
856 | &rtl8019_device, | |
857 | &netusbee_device | |
1d87a8f2 MS |
858 | }; |
859 | #endif /* CONFIG_ATARI_ETHERNEC */ | |
860 | ||
736b24db MS |
861 | int __init atari_platform_init(void) |
862 | { | |
863 | int rv = 0; | |
864 | ||
865 | if (!MACH_IS_ATARI) | |
866 | return -ENODEV; | |
867 | ||
868 | #ifdef CONFIG_ATARI_ETHERNAT | |
869 | { | |
870 | unsigned char *enatc_virt; | |
871 | enatc_virt = (unsigned char *)ioremap((ATARI_ETHERNAT_PHYS_ADDR+0x23), 0xf); | |
872 | if (hwreg_present(enatc_virt)) { | |
873 | rv = platform_add_devices(atari_ethernat_devices, | |
874 | ARRAY_SIZE(atari_ethernat_devices)); | |
875 | } | |
876 | iounmap(enatc_virt); | |
877 | } | |
878 | #endif | |
879 | ||
1d87a8f2 MS |
880 | #ifdef CONFIG_ATARI_ETHERNEC |
881 | { | |
882 | int error; | |
883 | unsigned char *enec_virt; | |
884 | enec_virt = (unsigned char *)ioremap((ATARI_ETHERNEC_PHYS_ADDR), 0xf); | |
885 | if (hwreg_present(enec_virt)) { | |
01a18d16 MS |
886 | error = platform_add_devices(atari_netusbee_devices, |
887 | ARRAY_SIZE(atari_netusbee_devices)); | |
1d87a8f2 MS |
888 | if (error && !rv) |
889 | rv = error; | |
890 | } | |
891 | iounmap(enec_virt); | |
892 | } | |
893 | #endif | |
894 | ||
736b24db MS |
895 | return rv; |
896 | } | |
897 | ||
898 | arch_initcall(atari_platform_init); |