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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) */ | |
f9a01539 | 80 | extern void atari_sched_init(void); |
1da177e4 LT |
81 | extern int atari_mste_hwclk (int, struct rtc_time *); |
82 | extern int atari_tt_hwclk (int, struct rtc_time *); | |
1da177e4 | 83 | |
1da177e4 LT |
84 | /* ++roman: This is a more elaborate test for an SCC chip, since the plain |
85 | * Medusa board generates DTACK at the SCC's standard addresses, but a SCC | |
86 | * board in the Medusa is possible. Also, the addresses where the ST_ESCC | |
87 | * resides generate DTACK without the chip, too. | |
88 | * The method is to write values into the interrupt vector register, that | |
89 | * should be readable without trouble (from channel A!). | |
90 | */ | |
91 | ||
6ff5801a | 92 | static int __init scc_test(volatile char *ctla) |
1da177e4 | 93 | { |
6ff5801a RZ |
94 | if (!hwreg_present(ctla)) |
95 | return 0; | |
1da177e4 LT |
96 | MFPDELAY(); |
97 | ||
6ff5801a RZ |
98 | *ctla = 2; |
99 | MFPDELAY(); | |
100 | *ctla = 0x40; | |
101 | MFPDELAY(); | |
1da177e4 | 102 | |
6ff5801a RZ |
103 | *ctla = 2; |
104 | MFPDELAY(); | |
105 | if (*ctla != 0x40) | |
106 | return 0; | |
1da177e4 LT |
107 | MFPDELAY(); |
108 | ||
6ff5801a RZ |
109 | *ctla = 2; |
110 | MFPDELAY(); | |
111 | *ctla = 0x60; | |
112 | MFPDELAY(); | |
1da177e4 | 113 | |
6ff5801a RZ |
114 | *ctla = 2; |
115 | MFPDELAY(); | |
116 | if (*ctla != 0x60) | |
117 | return 0; | |
1da177e4 | 118 | |
6ff5801a | 119 | return 1; |
1da177e4 LT |
120 | } |
121 | ||
122 | ||
123 | /* | |
124 | * Parse an Atari-specific record in the bootinfo | |
125 | */ | |
126 | ||
127 | int __init atari_parse_bootinfo(const struct bi_record *record) | |
128 | { | |
6ff5801a | 129 | int unknown = 0; |
abe48101 | 130 | const void *data = record->data; |
1da177e4 | 131 | |
abe48101 | 132 | switch (be16_to_cpu(record->tag)) { |
1da177e4 | 133 | case BI_ATARI_MCH_COOKIE: |
abe48101 | 134 | atari_mch_cookie = be32_to_cpup(data); |
6ff5801a | 135 | break; |
1da177e4 | 136 | case BI_ATARI_MCH_TYPE: |
abe48101 | 137 | atari_mch_type = be32_to_cpup(data); |
6ff5801a | 138 | break; |
1da177e4 | 139 | default: |
6ff5801a RZ |
140 | unknown = 1; |
141 | break; | |
142 | } | |
143 | return unknown; | |
1da177e4 LT |
144 | } |
145 | ||
146 | ||
147 | /* Parse the Atari-specific switches= option. */ | |
d6713b40 | 148 | static int __init atari_switches_setup(char *str) |
1da177e4 | 149 | { |
c097a39c | 150 | char switches[COMMAND_LINE_SIZE]; |
6ff5801a RZ |
151 | char *p; |
152 | int ovsc_shift; | |
153 | char *args = switches; | |
154 | ||
d6713b40 RZ |
155 | if (!MACH_IS_ATARI) |
156 | return 0; | |
157 | ||
6ff5801a | 158 | /* copy string to local array, strsep works destructively... */ |
d6713b40 | 159 | strcpy(switches, str); |
6ff5801a RZ |
160 | atari_switches = 0; |
161 | ||
162 | /* parse the options */ | |
163 | while ((p = strsep(&args, ",")) != NULL) { | |
164 | if (!*p) | |
165 | continue; | |
166 | ovsc_shift = 0; | |
167 | if (strncmp(p, "ov_", 3) == 0) { | |
168 | p += 3; | |
169 | ovsc_shift = ATARI_SWITCH_OVSC_SHIFT; | |
170 | } | |
171 | ||
172 | if (strcmp(p, "ikbd") == 0) { | |
173 | /* RTS line of IKBD ACIA */ | |
174 | atari_switches |= ATARI_SWITCH_IKBD << ovsc_shift; | |
175 | } else if (strcmp(p, "midi") == 0) { | |
176 | /* RTS line of MIDI ACIA */ | |
177 | atari_switches |= ATARI_SWITCH_MIDI << ovsc_shift; | |
178 | } else if (strcmp(p, "snd6") == 0) { | |
179 | atari_switches |= ATARI_SWITCH_SND6 << ovsc_shift; | |
180 | } else if (strcmp(p, "snd7") == 0) { | |
181 | atari_switches |= ATARI_SWITCH_SND7 << ovsc_shift; | |
182 | } | |
1da177e4 | 183 | } |
d6713b40 | 184 | return 0; |
1da177e4 LT |
185 | } |
186 | ||
d6713b40 RZ |
187 | early_param("switches", atari_switches_setup); |
188 | ||
1da177e4 LT |
189 | |
190 | /* | |
191 | * Setup the Atari configuration info | |
192 | */ | |
193 | ||
194 | void __init config_atari(void) | |
195 | { | |
6ff5801a | 196 | unsigned short tos_version; |
1da177e4 | 197 | |
6ff5801a | 198 | memset(&atari_hw_present, 0, sizeof(atari_hw_present)); |
1da177e4 | 199 | |
6ff5801a RZ |
200 | /* Change size of I/O space from 64KB to 4GB. */ |
201 | ioport_resource.end = 0xFFFFFFFF; | |
1da177e4 | 202 | |
6ff5801a RZ |
203 | mach_sched_init = atari_sched_init; |
204 | mach_init_IRQ = atari_init_IRQ; | |
205 | mach_get_model = atari_get_model; | |
206 | mach_get_hardware_list = atari_get_hardware_list; | |
6ff5801a | 207 | mach_reset = atari_reset; |
a1a9e88f | 208 | #if IS_ENABLED(CONFIG_INPUT_M68K_BEEP) |
6ff5801a | 209 | mach_beep = atari_mksound; |
1da177e4 LT |
210 | #endif |
211 | #ifdef CONFIG_HEARTBEAT | |
6ff5801a | 212 | mach_heartbeat = atari_heartbeat; |
1da177e4 LT |
213 | #endif |
214 | ||
6ff5801a RZ |
215 | /* Set switches as requested by the user */ |
216 | if (atari_switches & ATARI_SWITCH_IKBD) | |
217 | acia.key_ctrl = ACIA_DIV64 | ACIA_D8N1S | ACIA_RHTID; | |
218 | if (atari_switches & ATARI_SWITCH_MIDI) | |
219 | acia.mid_ctrl = ACIA_DIV16 | ACIA_D8N1S | ACIA_RHTID; | |
220 | if (atari_switches & (ATARI_SWITCH_SND6|ATARI_SWITCH_SND7)) { | |
221 | sound_ym.rd_data_reg_sel = 14; | |
222 | sound_ym.wd_data = sound_ym.rd_data_reg_sel | | |
223 | ((atari_switches&ATARI_SWITCH_SND6) ? 0x40 : 0) | | |
224 | ((atari_switches&ATARI_SWITCH_SND7) ? 0x80 : 0); | |
225 | } | |
1da177e4 | 226 | |
6ff5801a RZ |
227 | /* ++bjoern: |
228 | * Determine hardware present | |
229 | */ | |
230 | ||
6d7919a7 | 231 | pr_info("Atari hardware found:"); |
29c8a246 | 232 | if (MACH_IS_MEDUSA) { |
6ff5801a RZ |
233 | /* There's no Atari video hardware on the Medusa, but all the |
234 | * addresses below generate a DTACK so no bus error occurs! */ | |
235 | } else if (hwreg_present(f030_xreg)) { | |
236 | ATARIHW_SET(VIDEL_SHIFTER); | |
6d7919a7 | 237 | pr_cont(" VIDEL"); |
6ff5801a RZ |
238 | /* This is a temporary hack: If there is Falcon video |
239 | * hardware, we assume that the ST-DMA serves SCSI instead of | |
240 | * ACSI. In the future, there should be a better method for | |
241 | * this... | |
242 | */ | |
243 | ATARIHW_SET(ST_SCSI); | |
6d7919a7 | 244 | pr_cont(" STDMA-SCSI"); |
6ff5801a RZ |
245 | } else if (hwreg_present(tt_palette)) { |
246 | ATARIHW_SET(TT_SHIFTER); | |
6d7919a7 | 247 | pr_cont(" TT_SHIFTER"); |
053b5142 GU |
248 | } else if (hwreg_present(&shifter_st.bas_hi)) { |
249 | if (hwreg_present(&shifter_st.bas_lo) && | |
250 | (shifter_st.bas_lo = 0x0aau, shifter_st.bas_lo == 0x0aau)) { | |
6ff5801a | 251 | ATARIHW_SET(EXTD_SHIFTER); |
6d7919a7 | 252 | pr_cont(" EXTD_SHIFTER"); |
6ff5801a RZ |
253 | } else { |
254 | ATARIHW_SET(STND_SHIFTER); | |
6d7919a7 | 255 | pr_cont(" STND_SHIFTER"); |
6ff5801a RZ |
256 | } |
257 | } | |
3d92e8f3 | 258 | if (hwreg_present(&st_mfp.par_dt_reg)) { |
6ff5801a | 259 | ATARIHW_SET(ST_MFP); |
6d7919a7 | 260 | pr_cont(" ST_MFP"); |
6ff5801a RZ |
261 | } |
262 | if (hwreg_present(&tt_mfp.par_dt_reg)) { | |
263 | ATARIHW_SET(TT_MFP); | |
6d7919a7 | 264 | pr_cont(" TT_MFP"); |
6ff5801a RZ |
265 | } |
266 | if (hwreg_present(&tt_scsi_dma.dma_addr_hi)) { | |
267 | ATARIHW_SET(SCSI_DMA); | |
6d7919a7 | 268 | pr_cont(" TT_SCSI_DMA"); |
6ff5801a | 269 | } |
6ff5801a RZ |
270 | /* |
271 | * The ST-DMA address registers aren't readable | |
272 | * on all Medusas, so the test below may fail | |
273 | */ | |
274 | if (MACH_IS_MEDUSA || | |
275 | (hwreg_present(&st_dma.dma_vhi) && | |
276 | (st_dma.dma_vhi = 0x55) && (st_dma.dma_hi = 0xaa) && | |
277 | st_dma.dma_vhi == 0x55 && st_dma.dma_hi == 0xaa && | |
278 | (st_dma.dma_vhi = 0xaa) && (st_dma.dma_hi = 0x55) && | |
279 | st_dma.dma_vhi == 0xaa && st_dma.dma_hi == 0x55)) { | |
280 | ATARIHW_SET(EXTD_DMA); | |
6d7919a7 | 281 | pr_cont(" EXTD_DMA"); |
6ff5801a RZ |
282 | } |
283 | if (hwreg_present(&tt_scsi.scsi_data)) { | |
284 | ATARIHW_SET(TT_SCSI); | |
6d7919a7 | 285 | pr_cont(" TT_SCSI"); |
6ff5801a RZ |
286 | } |
287 | if (hwreg_present(&sound_ym.rd_data_reg_sel)) { | |
288 | ATARIHW_SET(YM_2149); | |
6d7919a7 | 289 | pr_cont(" YM2149"); |
6ff5801a | 290 | } |
29c8a246 | 291 | if (!MACH_IS_MEDUSA && hwreg_present(&tt_dmasnd.ctrl)) { |
6ff5801a | 292 | ATARIHW_SET(PCM_8BIT); |
6d7919a7 | 293 | pr_cont(" PCM"); |
6ff5801a | 294 | } |
29c8a246 | 295 | if (hwreg_present(&falcon_codec.unused5)) { |
6ff5801a | 296 | ATARIHW_SET(CODEC); |
6d7919a7 | 297 | pr_cont(" CODEC"); |
6ff5801a RZ |
298 | } |
299 | if (hwreg_present(&dsp56k_host_interface.icr)) { | |
300 | ATARIHW_SET(DSP56K); | |
6d7919a7 | 301 | pr_cont(" DSP56K"); |
6ff5801a RZ |
302 | } |
303 | if (hwreg_present(&tt_scc_dma.dma_ctrl) && | |
1da177e4 | 304 | #if 0 |
6ff5801a RZ |
305 | /* This test sucks! Who knows some better? */ |
306 | (tt_scc_dma.dma_ctrl = 0x01, (tt_scc_dma.dma_ctrl & 1) == 1) && | |
307 | (tt_scc_dma.dma_ctrl = 0x00, (tt_scc_dma.dma_ctrl & 1) == 0) | |
1da177e4 | 308 | #else |
29c8a246 | 309 | !MACH_IS_MEDUSA |
1da177e4 | 310 | #endif |
6ff5801a RZ |
311 | ) { |
312 | ATARIHW_SET(SCC_DMA); | |
6d7919a7 | 313 | pr_cont(" SCC_DMA"); |
6ff5801a | 314 | } |
de339e4b | 315 | if (scc_test(&atari_scc.cha_a_ctrl)) { |
6ff5801a | 316 | ATARIHW_SET(SCC); |
6d7919a7 | 317 | pr_cont(" SCC"); |
6ff5801a RZ |
318 | } |
319 | if (scc_test(&st_escc.cha_b_ctrl)) { | |
320 | ATARIHW_SET(ST_ESCC); | |
6d7919a7 | 321 | pr_cont(" ST_ESCC"); |
6ff5801a | 322 | } |
29c8a246 | 323 | if (hwreg_present(&tt_scu.sys_mask)) { |
6ff5801a RZ |
324 | ATARIHW_SET(SCU); |
325 | /* Assume a VME bus if there's a SCU */ | |
326 | ATARIHW_SET(VME); | |
6d7919a7 | 327 | pr_cont(" VME SCU"); |
6ff5801a RZ |
328 | } |
329 | if (hwreg_present((void *)(0xffff9210))) { | |
330 | ATARIHW_SET(ANALOG_JOY); | |
6d7919a7 | 331 | pr_cont(" ANALOG_JOY"); |
6ff5801a | 332 | } |
29c8a246 | 333 | if (hwreg_present(blitter.halftone)) { |
6ff5801a | 334 | ATARIHW_SET(BLITTER); |
6d7919a7 | 335 | pr_cont(" BLITTER"); |
6ff5801a RZ |
336 | } |
337 | if (hwreg_present((void *)0xfff00039)) { | |
338 | ATARIHW_SET(IDE); | |
6d7919a7 | 339 | pr_cont(" IDE"); |
6ff5801a | 340 | } |
1da177e4 | 341 | #if 1 /* This maybe wrong */ |
29c8a246 | 342 | if (!MACH_IS_MEDUSA && hwreg_present(&tt_microwire.data) && |
6ff5801a RZ |
343 | hwreg_present(&tt_microwire.mask) && |
344 | (tt_microwire.mask = 0x7ff, | |
345 | udelay(1), | |
346 | tt_microwire.data = MW_LM1992_PSG_HIGH | MW_LM1992_ADDR, | |
347 | udelay(1), | |
348 | tt_microwire.data != 0)) { | |
349 | ATARIHW_SET(MICROWIRE); | |
350 | while (tt_microwire.mask != 0x7ff) | |
351 | ; | |
6d7919a7 | 352 | pr_cont(" MICROWIRE"); |
6ff5801a | 353 | } |
1da177e4 | 354 | #endif |
6ff5801a RZ |
355 | if (hwreg_present(&tt_rtc.regsel)) { |
356 | ATARIHW_SET(TT_CLK); | |
6d7919a7 | 357 | pr_cont(" TT_CLK"); |
6ff5801a | 358 | mach_hwclk = atari_tt_hwclk; |
6ff5801a | 359 | } |
29c8a246 | 360 | if (hwreg_present(&mste_rtc.sec_ones)) { |
6ff5801a | 361 | ATARIHW_SET(MSTE_CLK); |
6d7919a7 | 362 | pr_cont(" MSTE_CLK"); |
6ff5801a | 363 | mach_hwclk = atari_mste_hwclk; |
6ff5801a | 364 | } |
29c8a246 | 365 | if (!MACH_IS_MEDUSA && hwreg_present(&dma_wd.fdc_speed) && |
6ff5801a RZ |
366 | hwreg_write(&dma_wd.fdc_speed, 0)) { |
367 | ATARIHW_SET(FDCSPEED); | |
6d7919a7 | 368 | pr_cont(" FDC_SPEED"); |
6ff5801a | 369 | } |
29c8a246 | 370 | if (!ATARIHW_PRESENT(ST_SCSI)) { |
6ff5801a | 371 | ATARIHW_SET(ACSI); |
6d7919a7 | 372 | pr_cont(" ACSI"); |
6ff5801a | 373 | } |
6d7919a7 | 374 | pr_cont("\n"); |
6ff5801a RZ |
375 | |
376 | if (CPU_IS_040_OR_060) | |
377 | /* Now it seems to be safe to turn of the tt0 transparent | |
378 | * translation (the one that must not be turned off in | |
379 | * head.S...) | |
380 | */ | |
381 | asm volatile ("\n" | |
382 | " moveq #0,%%d0\n" | |
383 | " .chip 68040\n" | |
384 | " movec %%d0,%%itt0\n" | |
385 | " movec %%d0,%%dtt0\n" | |
386 | " .chip 68k" | |
387 | : /* no outputs */ | |
388 | : /* no inputs */ | |
389 | : "d0"); | |
390 | ||
391 | /* allocator for memory that must reside in st-ram */ | |
392 | atari_stram_init(); | |
393 | ||
394 | /* Set up a mapping for the VMEbus address region: | |
395 | * | |
396 | * VME is either at phys. 0xfexxxxxx (TT) or 0xa00000..0xdfffff | |
397 | * (MegaSTE) In both cases, the whole 16 MB chunk is mapped at | |
398 | * 0xfe000000 virt., because this can be done with a single | |
399 | * transparent translation. On the 68040, lots of often unused | |
400 | * page tables would be needed otherwise. On a MegaSTE or similar, | |
401 | * the highest byte is stripped off by hardware due to the 24 bit | |
402 | * design of the bus. | |
403 | */ | |
404 | ||
405 | if (CPU_IS_020_OR_030) { | |
406 | unsigned long tt1_val; | |
407 | tt1_val = 0xfe008543; /* Translate 0xfexxxxxx, enable, cache | |
408 | * inhibit, read and write, FDC mask = 3, | |
409 | * FDC val = 4 -> Supervisor only */ | |
410 | asm volatile ("\n" | |
411 | " .chip 68030\n" | |
2a353506 | 412 | " pmove %0,%/tt1\n" |
6ff5801a | 413 | " .chip 68k" |
2a353506 | 414 | : : "m" (tt1_val)); |
6ff5801a RZ |
415 | } else { |
416 | asm volatile ("\n" | |
417 | " .chip 68040\n" | |
418 | " movec %0,%%itt1\n" | |
419 | " movec %0,%%dtt1\n" | |
420 | " .chip 68k" | |
421 | : | |
422 | : "d" (0xfe00a040)); /* Translate 0xfexxxxxx, enable, | |
423 | * supervisor only, non-cacheable/ | |
424 | * serialized, writable */ | |
425 | ||
426 | } | |
1da177e4 | 427 | |
6ff5801a RZ |
428 | /* Fetch tos version at Physical 2 */ |
429 | /* | |
430 | * We my not be able to access this address if the kernel is | |
431 | * loaded to st ram, since the first page is unmapped. On the | |
432 | * Medusa this is always the case and there is nothing we can do | |
433 | * about this, so we just assume the smaller offset. For the TT | |
434 | * we use the fact that in head.S we have set up a mapping | |
435 | * 0xFFxxxxxx -> 0x00xxxxxx, so that the first 16MB is accessible | |
436 | * in the last 16MB of the address space. | |
437 | */ | |
29c8a246 | 438 | tos_version = (MACH_IS_MEDUSA) ? |
6ff5801a RZ |
439 | 0xfff : *(unsigned short *)0xff000002; |
440 | atari_rtc_year_offset = (tos_version < 0x306) ? 70 : 68; | |
1da177e4 LT |
441 | } |
442 | ||
443 | #ifdef CONFIG_HEARTBEAT | |
6ff5801a | 444 | static void atari_heartbeat(int on) |
1da177e4 | 445 | { |
6ff5801a RZ |
446 | unsigned char tmp; |
447 | unsigned long flags; | |
1da177e4 | 448 | |
6ff5801a RZ |
449 | if (atari_dont_touch_floppy_select) |
450 | return; | |
1da177e4 | 451 | |
6ff5801a RZ |
452 | local_irq_save(flags); |
453 | sound_ym.rd_data_reg_sel = 14; /* Select PSG Port A */ | |
454 | tmp = sound_ym.rd_data_reg_sel; | |
455 | sound_ym.wd_data = on ? (tmp & ~0x02) : (tmp | 0x02); | |
456 | local_irq_restore(flags); | |
1da177e4 LT |
457 | } |
458 | #endif | |
459 | ||
460 | /* ++roman: | |
461 | * | |
462 | * This function does a reset on machines that lack the ability to | |
463 | * assert the processor's _RESET signal somehow via hardware. It is | |
464 | * based on the fact that you can find the initial SP and PC values | |
465 | * after a reset at physical addresses 0 and 4. This works pretty well | |
466 | * for Atari machines, since the lowest 8 bytes of physical memory are | |
467 | * really ROM (mapped by hardware). For other 680x0 machines: don't | |
468 | * know if it works... | |
469 | * | |
470 | * To get the values at addresses 0 and 4, the MMU better is turned | |
471 | * off first. After that, we have to jump into physical address space | |
472 | * (the PC before the pmove statement points to the virtual address of | |
473 | * the code). Getting that physical address is not hard, but the code | |
474 | * becomes a bit complex since I've tried to ensure that the jump | |
475 | * statement after the pmove is in the cache already (otherwise the | |
476 | * processor can't fetch it!). For that, the code first jumps to the | |
477 | * jump statement with the (virtual) address of the pmove section in | |
478 | * an address register . The jump statement is surely in the cache | |
479 | * now. After that, that physical address of the reset code is loaded | |
480 | * into the same address register, pmove is done and the same jump | |
481 | * statements goes to the reset code. Since there are not many | |
482 | * statements between the two jumps, I hope it stays in the cache. | |
483 | * | |
484 | * The C code makes heavy use of the GCC features that you can get the | |
485 | * address of a C label. No hope to compile this with another compiler | |
486 | * than GCC! | |
487 | */ | |
488 | ||
489 | /* ++andreas: no need for complicated code, just depend on prefetch */ | |
490 | ||
6ff5801a | 491 | static void atari_reset(void) |
1da177e4 | 492 | { |
6ff5801a RZ |
493 | long tc_val = 0; |
494 | long reset_addr; | |
495 | ||
496 | /* | |
497 | * On the Medusa, phys. 0x4 may contain garbage because it's no | |
498 | * ROM. See above for explanation why we cannot use PTOV(4). | |
499 | */ | |
29c8a246 | 500 | reset_addr = MACH_IS_MEDUSA || MACH_IS_AB40 ? 0xe00030 : |
6ff5801a RZ |
501 | *(unsigned long *) 0xff000004; |
502 | ||
503 | /* reset ACIA for switch off OverScan, if it's active */ | |
504 | if (atari_switches & ATARI_SWITCH_OVSC_IKBD) | |
505 | acia.key_ctrl = ACIA_RESET; | |
506 | if (atari_switches & ATARI_SWITCH_OVSC_MIDI) | |
507 | acia.mid_ctrl = ACIA_RESET; | |
508 | ||
509 | /* processor independent: turn off interrupts and reset the VBR; | |
510 | * the caches must be left enabled, else prefetching the final jump | |
511 | * instruction doesn't work. | |
512 | */ | |
513 | local_irq_disable(); | |
514 | asm volatile ("movec %0,%%vbr" | |
515 | : : "d" (0)); | |
516 | ||
517 | if (CPU_IS_040_OR_060) { | |
518 | unsigned long jmp_addr040 = virt_to_phys(&&jmp_addr_label040); | |
519 | if (CPU_IS_060) { | |
520 | /* 68060: clear PCR to turn off superscalar operation */ | |
521 | asm volatile ("\n" | |
522 | " .chip 68060\n" | |
523 | " movec %0,%%pcr\n" | |
524 | " .chip 68k" | |
525 | : : "d" (0)); | |
526 | } | |
527 | ||
528 | asm volatile ("\n" | |
529 | " move.l %0,%%d0\n" | |
530 | " and.l #0xff000000,%%d0\n" | |
531 | " or.w #0xe020,%%d0\n" /* map 16 MB, enable, cacheable */ | |
532 | " .chip 68040\n" | |
533 | " movec %%d0,%%itt0\n" | |
534 | " movec %%d0,%%dtt0\n" | |
535 | " .chip 68k\n" | |
536 | " jmp %0@" | |
537 | : : "a" (jmp_addr040) | |
538 | : "d0"); | |
539 | jmp_addr_label040: | |
540 | asm volatile ("\n" | |
541 | " moveq #0,%%d0\n" | |
542 | " nop\n" | |
543 | " .chip 68040\n" | |
544 | " cinva %%bc\n" | |
545 | " nop\n" | |
546 | " pflusha\n" | |
547 | " nop\n" | |
548 | " movec %%d0,%%tc\n" | |
549 | " nop\n" | |
550 | /* the following setup of transparent translations is needed on the | |
551 | * Afterburner040 to successfully reboot. Other machines shouldn't | |
552 | * care about a different tt regs setup, they also didn't care in | |
553 | * the past that the regs weren't turned off. */ | |
554 | " move.l #0xffc000,%%d0\n" /* whole insn space cacheable */ | |
555 | " movec %%d0,%%itt0\n" | |
556 | " movec %%d0,%%itt1\n" | |
557 | " or.w #0x40,%/d0\n" /* whole data space non-cacheable/ser. */ | |
558 | " movec %%d0,%%dtt0\n" | |
559 | " movec %%d0,%%dtt1\n" | |
560 | " .chip 68k\n" | |
561 | " jmp %0@" | |
562 | : /* no outputs */ | |
563 | : "a" (reset_addr) | |
564 | : "d0"); | |
565 | } else | |
566 | asm volatile ("\n" | |
2a353506 | 567 | " pmove %0,%%tc\n" |
6ff5801a RZ |
568 | " jmp %1@" |
569 | : /* no outputs */ | |
2a353506 | 570 | : "m" (tc_val), "a" (reset_addr)); |
1da177e4 LT |
571 | } |
572 | ||
573 | ||
574 | static void atari_get_model(char *model) | |
575 | { | |
6ff5801a RZ |
576 | strcpy(model, "Atari "); |
577 | switch (atari_mch_cookie >> 16) { | |
1da177e4 | 578 | case ATARI_MCH_ST: |
6ff5801a RZ |
579 | if (ATARIHW_PRESENT(MSTE_CLK)) |
580 | strcat(model, "Mega ST"); | |
581 | else | |
582 | strcat(model, "ST"); | |
583 | break; | |
1da177e4 | 584 | case ATARI_MCH_STE: |
6ff5801a RZ |
585 | if (MACH_IS_MSTE) |
586 | strcat(model, "Mega STE"); | |
587 | else | |
588 | strcat(model, "STE"); | |
589 | break; | |
1da177e4 | 590 | case ATARI_MCH_TT: |
6ff5801a RZ |
591 | if (MACH_IS_MEDUSA) |
592 | /* Medusa has TT _MCH cookie */ | |
593 | strcat(model, "Medusa"); | |
6ff5801a RZ |
594 | else |
595 | strcat(model, "TT"); | |
596 | break; | |
1da177e4 | 597 | case ATARI_MCH_FALCON: |
6ff5801a RZ |
598 | strcat(model, "Falcon"); |
599 | if (MACH_IS_AB40) | |
600 | strcat(model, " (with Afterburner040)"); | |
601 | break; | |
1da177e4 | 602 | default: |
6ff5801a RZ |
603 | sprintf(model + strlen(model), "(unknown mach cookie 0x%lx)", |
604 | atari_mch_cookie); | |
605 | break; | |
606 | } | |
1da177e4 LT |
607 | } |
608 | ||
609 | ||
813dcf7a | 610 | static void atari_get_hardware_list(struct seq_file *m) |
1da177e4 | 611 | { |
813dcf7a | 612 | int i; |
6ff5801a RZ |
613 | |
614 | for (i = 0; i < m68k_num_memory; i++) | |
813dcf7a | 615 | seq_printf(m, "\t%3ld MB at 0x%08lx (%s)\n", |
6ff5801a RZ |
616 | m68k_memory[i].size >> 20, m68k_memory[i].addr, |
617 | (m68k_memory[i].addr & 0xff000000 ? | |
618 | "alternate RAM" : "ST-RAM")); | |
619 | ||
620 | #define ATARIHW_ANNOUNCE(name, str) \ | |
621 | if (ATARIHW_PRESENT(name)) \ | |
813dcf7a | 622 | seq_printf(m, "\t%s\n", str) |
6ff5801a | 623 | |
ad595b77 | 624 | seq_puts(m, "Detected hardware:\n"); |
6ff5801a RZ |
625 | ATARIHW_ANNOUNCE(STND_SHIFTER, "ST Shifter"); |
626 | ATARIHW_ANNOUNCE(EXTD_SHIFTER, "STe Shifter"); | |
627 | ATARIHW_ANNOUNCE(TT_SHIFTER, "TT Shifter"); | |
628 | ATARIHW_ANNOUNCE(VIDEL_SHIFTER, "Falcon Shifter"); | |
629 | ATARIHW_ANNOUNCE(YM_2149, "Programmable Sound Generator"); | |
630 | ATARIHW_ANNOUNCE(PCM_8BIT, "PCM 8 Bit Sound"); | |
631 | ATARIHW_ANNOUNCE(CODEC, "CODEC Sound"); | |
632 | ATARIHW_ANNOUNCE(TT_SCSI, "SCSI Controller NCR5380 (TT style)"); | |
633 | ATARIHW_ANNOUNCE(ST_SCSI, "SCSI Controller NCR5380 (Falcon style)"); | |
634 | ATARIHW_ANNOUNCE(ACSI, "ACSI Interface"); | |
635 | ATARIHW_ANNOUNCE(IDE, "IDE Interface"); | |
636 | ATARIHW_ANNOUNCE(FDCSPEED, "8/16 Mhz Switch for FDC"); | |
637 | ATARIHW_ANNOUNCE(ST_MFP, "Multi Function Peripheral MFP 68901"); | |
638 | ATARIHW_ANNOUNCE(TT_MFP, "Second Multi Function Peripheral MFP 68901"); | |
639 | ATARIHW_ANNOUNCE(SCC, "Serial Communications Controller SCC 8530"); | |
640 | ATARIHW_ANNOUNCE(ST_ESCC, "Extended Serial Communications Controller SCC 85230"); | |
641 | ATARIHW_ANNOUNCE(ANALOG_JOY, "Paddle Interface"); | |
642 | ATARIHW_ANNOUNCE(MICROWIRE, "MICROWIRE(tm) Interface"); | |
643 | ATARIHW_ANNOUNCE(STND_DMA, "DMA Controller (24 bit)"); | |
644 | ATARIHW_ANNOUNCE(EXTD_DMA, "DMA Controller (32 bit)"); | |
645 | ATARIHW_ANNOUNCE(SCSI_DMA, "DMA Controller for NCR5380"); | |
646 | ATARIHW_ANNOUNCE(SCC_DMA, "DMA Controller for SCC"); | |
647 | ATARIHW_ANNOUNCE(TT_CLK, "Clock Chip MC146818A"); | |
648 | ATARIHW_ANNOUNCE(MSTE_CLK, "Clock Chip RP5C15"); | |
649 | ATARIHW_ANNOUNCE(SCU, "System Control Unit"); | |
650 | ATARIHW_ANNOUNCE(BLITTER, "Blitter"); | |
651 | ATARIHW_ANNOUNCE(VME, "VME Bus"); | |
652 | ATARIHW_ANNOUNCE(DSP56K, "DSP56001 processor"); | |
1da177e4 | 653 | } |
736b24db MS |
654 | |
655 | /* | |
656 | * MSch: initial platform device support for Atari, | |
01a18d16 | 657 | * required for EtherNAT/EtherNEC/NetUSBee drivers |
736b24db MS |
658 | */ |
659 | ||
01a18d16 MS |
660 | #if defined(CONFIG_ATARI_ETHERNAT) || defined(CONFIG_ATARI_ETHERNEC) |
661 | static void isp1160_delay(struct device *dev, int delay) | |
662 | { | |
663 | ndelay(delay); | |
664 | } | |
665 | #endif | |
666 | ||
736b24db MS |
667 | #ifdef CONFIG_ATARI_ETHERNAT |
668 | /* | |
669 | * EtherNAT: SMC91C111 Ethernet chipset, handled by smc91x driver | |
670 | */ | |
671 | ||
672 | #define ATARI_ETHERNAT_IRQ 140 | |
673 | ||
674 | static struct resource smc91x_resources[] = { | |
675 | [0] = { | |
676 | .name = "smc91x-regs", | |
677 | .start = ATARI_ETHERNAT_PHYS_ADDR, | |
678 | .end = ATARI_ETHERNAT_PHYS_ADDR + 0xfffff, | |
679 | .flags = IORESOURCE_MEM, | |
680 | }, | |
681 | [1] = { | |
682 | .name = "smc91x-irq", | |
683 | .start = ATARI_ETHERNAT_IRQ, | |
684 | .end = ATARI_ETHERNAT_IRQ, | |
685 | .flags = IORESOURCE_IRQ, | |
686 | }, | |
687 | }; | |
688 | ||
689 | static struct platform_device smc91x_device = { | |
690 | .name = "smc91x", | |
691 | .id = -1, | |
692 | .num_resources = ARRAY_SIZE(smc91x_resources), | |
693 | .resource = smc91x_resources, | |
694 | }; | |
695 | ||
01a18d16 MS |
696 | /* |
697 | * ISP 1160 - using the isp116x-hcd module | |
698 | */ | |
699 | ||
700 | #define ATARI_USB_PHYS_ADDR 0x80000012 | |
701 | #define ATARI_USB_IRQ 139 | |
702 | ||
703 | static struct resource isp1160_resources[] = { | |
704 | [0] = { | |
705 | .name = "isp1160-data", | |
706 | .start = ATARI_USB_PHYS_ADDR, | |
707 | .end = ATARI_USB_PHYS_ADDR + 0x1, | |
708 | .flags = IORESOURCE_MEM, | |
709 | }, | |
710 | [1] = { | |
711 | .name = "isp1160-regs", | |
712 | .start = ATARI_USB_PHYS_ADDR + 0x4, | |
713 | .end = ATARI_USB_PHYS_ADDR + 0x5, | |
714 | .flags = IORESOURCE_MEM, | |
715 | }, | |
716 | [2] = { | |
717 | .name = "isp1160-irq", | |
718 | .start = ATARI_USB_IRQ, | |
719 | .end = ATARI_USB_IRQ, | |
720 | .flags = IORESOURCE_IRQ, | |
721 | }, | |
722 | }; | |
723 | ||
724 | /* (DataBusWidth16|AnalogOCEnable|DREQOutputPolarity|DownstreamPort15KRSel ) */ | |
725 | static struct isp116x_platform_data isp1160_platform_data = { | |
726 | /* Enable internal resistors on downstream ports */ | |
727 | .sel15Kres = 1, | |
728 | /* On-chip overcurrent protection */ | |
729 | .oc_enable = 1, | |
730 | /* INT output polarity */ | |
731 | .int_act_high = 1, | |
732 | /* INT edge or level triggered */ | |
733 | .int_edge_triggered = 0, | |
734 | ||
735 | /* WAKEUP pin connected - NOT SUPPORTED */ | |
736 | /* .remote_wakeup_connected = 0, */ | |
737 | /* Wakeup by devices on usb bus enabled */ | |
738 | .remote_wakeup_enable = 0, | |
739 | .delay = isp1160_delay, | |
740 | }; | |
741 | ||
742 | static struct platform_device isp1160_device = { | |
743 | .name = "isp116x-hcd", | |
744 | .id = 0, | |
745 | .num_resources = ARRAY_SIZE(isp1160_resources), | |
746 | .resource = isp1160_resources, | |
747 | .dev = { | |
748 | .platform_data = &isp1160_platform_data, | |
749 | }, | |
750 | }; | |
751 | ||
736b24db | 752 | static struct platform_device *atari_ethernat_devices[] __initdata = { |
01a18d16 MS |
753 | &smc91x_device, |
754 | &isp1160_device | |
736b24db MS |
755 | }; |
756 | #endif /* CONFIG_ATARI_ETHERNAT */ | |
757 | ||
1d87a8f2 MS |
758 | #ifdef CONFIG_ATARI_ETHERNEC |
759 | /* | |
760 | * EtherNEC: RTL8019 (NE2000 compatible) Ethernet chipset, | |
761 | * handled by ne.c driver | |
762 | */ | |
763 | ||
764 | #define ATARI_ETHERNEC_PHYS_ADDR 0xfffa0000 | |
765 | #define ATARI_ETHERNEC_BASE 0x300 | |
766 | #define ATARI_ETHERNEC_IRQ IRQ_MFP_TIMER1 | |
767 | ||
768 | static struct resource rtl8019_resources[] = { | |
769 | [0] = { | |
770 | .name = "rtl8019-regs", | |
771 | .start = ATARI_ETHERNEC_BASE, | |
772 | .end = ATARI_ETHERNEC_BASE + 0x20 - 1, | |
773 | .flags = IORESOURCE_IO, | |
774 | }, | |
775 | [1] = { | |
776 | .name = "rtl8019-irq", | |
777 | .start = ATARI_ETHERNEC_IRQ, | |
778 | .end = ATARI_ETHERNEC_IRQ, | |
779 | .flags = IORESOURCE_IRQ, | |
780 | }, | |
781 | }; | |
782 | ||
783 | static struct platform_device rtl8019_device = { | |
784 | .name = "ne", | |
785 | .id = -1, | |
786 | .num_resources = ARRAY_SIZE(rtl8019_resources), | |
787 | .resource = rtl8019_resources, | |
788 | }; | |
789 | ||
01a18d16 MS |
790 | /* |
791 | * NetUSBee: ISP1160 USB host adapter via ROM-port adapter | |
792 | */ | |
793 | ||
794 | #define ATARI_NETUSBEE_PHYS_ADDR 0xfffa8000 | |
795 | #define ATARI_NETUSBEE_BASE 0x340 | |
796 | #define ATARI_NETUSBEE_IRQ IRQ_MFP_TIMER2 | |
797 | ||
798 | static struct resource netusbee_resources[] = { | |
799 | [0] = { | |
800 | .name = "isp1160-data", | |
801 | .start = ATARI_NETUSBEE_BASE, | |
802 | .end = ATARI_NETUSBEE_BASE + 0x1, | |
803 | .flags = IORESOURCE_MEM, | |
804 | }, | |
805 | [1] = { | |
806 | .name = "isp1160-regs", | |
807 | .start = ATARI_NETUSBEE_BASE + 0x20, | |
808 | .end = ATARI_NETUSBEE_BASE + 0x21, | |
809 | .flags = IORESOURCE_MEM, | |
810 | }, | |
811 | [2] = { | |
812 | .name = "isp1160-irq", | |
813 | .start = ATARI_NETUSBEE_IRQ, | |
814 | .end = ATARI_NETUSBEE_IRQ, | |
815 | .flags = IORESOURCE_IRQ, | |
816 | }, | |
817 | }; | |
818 | ||
819 | /* (DataBusWidth16|AnalogOCEnable|DREQOutputPolarity|DownstreamPort15KRSel ) */ | |
820 | static struct isp116x_platform_data netusbee_platform_data = { | |
821 | /* Enable internal resistors on downstream ports */ | |
822 | .sel15Kres = 1, | |
823 | /* On-chip overcurrent protection */ | |
824 | .oc_enable = 1, | |
825 | /* INT output polarity */ | |
826 | .int_act_high = 1, | |
827 | /* INT edge or level triggered */ | |
828 | .int_edge_triggered = 0, | |
829 | ||
830 | /* WAKEUP pin connected - NOT SUPPORTED */ | |
831 | /* .remote_wakeup_connected = 0, */ | |
832 | /* Wakeup by devices on usb bus enabled */ | |
833 | .remote_wakeup_enable = 0, | |
834 | .delay = isp1160_delay, | |
835 | }; | |
836 | ||
837 | static struct platform_device netusbee_device = { | |
838 | .name = "isp116x-hcd", | |
839 | .id = 1, | |
840 | .num_resources = ARRAY_SIZE(netusbee_resources), | |
841 | .resource = netusbee_resources, | |
842 | .dev = { | |
843 | .platform_data = &netusbee_platform_data, | |
844 | }, | |
845 | }; | |
846 | ||
847 | static struct platform_device *atari_netusbee_devices[] __initdata = { | |
848 | &rtl8019_device, | |
849 | &netusbee_device | |
1d87a8f2 MS |
850 | }; |
851 | #endif /* CONFIG_ATARI_ETHERNEC */ | |
852 | ||
2d522618 | 853 | #if IS_ENABLED(CONFIG_ATARI_SCSI) |
3ff228af FT |
854 | static const struct resource atari_scsi_st_rsrc[] __initconst = { |
855 | { | |
856 | .flags = IORESOURCE_IRQ, | |
857 | .start = IRQ_MFP_FSCSI, | |
858 | .end = IRQ_MFP_FSCSI, | |
859 | }, | |
860 | }; | |
861 | ||
862 | static const struct resource atari_scsi_tt_rsrc[] __initconst = { | |
863 | { | |
864 | .flags = IORESOURCE_IRQ, | |
865 | .start = IRQ_TT_MFP_SCSI, | |
866 | .end = IRQ_TT_MFP_SCSI, | |
867 | }, | |
868 | }; | |
869 | #endif | |
870 | ||
5ed0794c MS |
871 | /* |
872 | * Falcon IDE interface | |
873 | */ | |
874 | ||
875 | #define FALCON_IDE_BASE 0xfff00000 | |
876 | ||
877 | static const struct resource atari_falconide_rsrc[] __initconst = { | |
44b1fbc0 FT |
878 | DEFINE_RES_MEM(FALCON_IDE_BASE, 0x38), |
879 | DEFINE_RES_MEM(FALCON_IDE_BASE + 0x38, 2), | |
5ed0794c MS |
880 | }; |
881 | ||
736b24db MS |
882 | int __init atari_platform_init(void) |
883 | { | |
5ed0794c | 884 | struct platform_device *pdev; |
736b24db MS |
885 | int rv = 0; |
886 | ||
887 | if (!MACH_IS_ATARI) | |
888 | return -ENODEV; | |
889 | ||
890 | #ifdef CONFIG_ATARI_ETHERNAT | |
891 | { | |
892 | unsigned char *enatc_virt; | |
893 | enatc_virt = (unsigned char *)ioremap((ATARI_ETHERNAT_PHYS_ADDR+0x23), 0xf); | |
894 | if (hwreg_present(enatc_virt)) { | |
895 | rv = platform_add_devices(atari_ethernat_devices, | |
896 | ARRAY_SIZE(atari_ethernat_devices)); | |
897 | } | |
898 | iounmap(enatc_virt); | |
899 | } | |
900 | #endif | |
901 | ||
1d87a8f2 MS |
902 | #ifdef CONFIG_ATARI_ETHERNEC |
903 | { | |
904 | int error; | |
905 | unsigned char *enec_virt; | |
906 | enec_virt = (unsigned char *)ioremap((ATARI_ETHERNEC_PHYS_ADDR), 0xf); | |
907 | if (hwreg_present(enec_virt)) { | |
01a18d16 MS |
908 | error = platform_add_devices(atari_netusbee_devices, |
909 | ARRAY_SIZE(atari_netusbee_devices)); | |
1d87a8f2 MS |
910 | if (error && !rv) |
911 | rv = error; | |
912 | } | |
913 | iounmap(enec_virt); | |
914 | } | |
915 | #endif | |
916 | ||
2d522618 | 917 | #if IS_ENABLED(CONFIG_ATARI_SCSI) |
3ff228af FT |
918 | if (ATARIHW_PRESENT(ST_SCSI)) |
919 | platform_device_register_simple("atari_scsi", -1, | |
920 | atari_scsi_st_rsrc, ARRAY_SIZE(atari_scsi_st_rsrc)); | |
921 | else if (ATARIHW_PRESENT(TT_SCSI)) | |
922 | platform_device_register_simple("atari_scsi", -1, | |
923 | atari_scsi_tt_rsrc, ARRAY_SIZE(atari_scsi_tt_rsrc)); | |
924 | #endif | |
925 | ||
5ed0794c MS |
926 | if (ATARIHW_PRESENT(IDE)) { |
927 | pdev = platform_device_register_simple("atari-falcon-ide", -1, | |
928 | atari_falconide_rsrc, ARRAY_SIZE(atari_falconide_rsrc)); | |
929 | if (IS_ERR(pdev)) | |
930 | rv = PTR_ERR(pdev); | |
931 | } | |
932 | ||
736b24db MS |
933 | return rv; |
934 | } | |
935 | ||
936 | arch_initcall(atari_platform_init); |