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c906108c SS |
1 | /* |
2 | * This file is part of SIS. | |
3 | * | |
4 | * SIS, SPARC instruction simulator V2.5 Copyright (C) 1995 Jiri Gaisler, | |
5 | * European Space Agency | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify it under | |
8 | * the terms of the GNU General Public License as published by the Free | |
3fd725ef | 9 | * Software Foundation; either version 3 of the License, or (at your option) |
c906108c SS |
10 | * any later version. |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
13 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
15 | * more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License along with | |
51b318de | 18 | * this program; if not, see <http://www.gnu.org/licenses/>. |
c906108c SS |
19 | * |
20 | */ | |
21 | ||
22 | /* The control space devices */ | |
23 | ||
5272643f | 24 | #include "config.h" |
c906108c SS |
25 | #include <sys/types.h> |
26 | #include <stdio.h> | |
d68c23cd | 27 | #include <string.h> |
c906108c SS |
28 | #include <termios.h> |
29 | #include <sys/fcntl.h> | |
30 | #include <sys/file.h> | |
31 | #include <unistd.h> | |
32 | #include "sis.h" | |
c906108c SS |
33 | #include "sim-config.h" |
34 | ||
35 | extern int ctrl_c; | |
36 | extern int32 sis_verbose; | |
37 | extern int32 sparclite, sparclite_board; | |
38 | extern int rom8,wrp,uben; | |
39 | extern char uart_dev1[], uart_dev2[]; | |
40 | ||
41 | int dumbio = 0; /* normal, smart, terminal oriented IO by default */ | |
42 | ||
43 | /* MEC registers */ | |
44 | #define MEC_START 0x01f80000 | |
45 | #define MEC_END 0x01f80100 | |
46 | ||
47 | /* Memory exception waitstates */ | |
48 | #define MEM_EX_WS 1 | |
49 | ||
50 | /* ERC32 always adds one waitstate during RAM std */ | |
51 | #define STD_WS 1 | |
52 | ||
53 | #ifdef ERRINJ | |
54 | extern int errmec; | |
55 | #endif | |
56 | ||
c906108c SS |
57 | #define MEC_WS 0 /* Waitstates per MEC access (0 ws) */ |
58 | #define MOK 0 | |
59 | ||
60 | /* MEC register addresses */ | |
61 | ||
62 | #define MEC_MCR 0x000 | |
63 | #define MEC_SFR 0x004 | |
64 | #define MEC_PWDR 0x008 | |
65 | #define MEC_MEMCFG 0x010 | |
66 | #define MEC_IOCR 0x014 | |
67 | #define MEC_WCR 0x018 | |
68 | ||
69 | #define MEC_MAR0 0x020 | |
70 | #define MEC_MAR1 0x024 | |
71 | ||
72 | #define MEC_SSA1 0x020 | |
73 | #define MEC_SEA1 0x024 | |
74 | #define MEC_SSA2 0x028 | |
75 | #define MEC_SEA2 0x02C | |
76 | #define MEC_ISR 0x044 | |
77 | #define MEC_IPR 0x048 | |
78 | #define MEC_IMR 0x04C | |
79 | #define MEC_ICR 0x050 | |
80 | #define MEC_IFR 0x054 | |
81 | #define MEC_WDOG 0x060 | |
82 | #define MEC_TRAPD 0x064 | |
83 | #define MEC_RTC_COUNTER 0x080 | |
84 | #define MEC_RTC_RELOAD 0x080 | |
85 | #define MEC_RTC_SCALER 0x084 | |
86 | #define MEC_GPT_COUNTER 0x088 | |
87 | #define MEC_GPT_RELOAD 0x088 | |
88 | #define MEC_GPT_SCALER 0x08C | |
89 | #define MEC_TIMER_CTRL 0x098 | |
90 | #define MEC_SFSR 0x0A0 | |
91 | #define MEC_FFAR 0x0A4 | |
92 | #define MEC_ERSR 0x0B0 | |
93 | #define MEC_DBG 0x0C0 | |
94 | #define MEC_TCR 0x0D0 | |
95 | ||
96 | #define MEC_BRK 0x0C4 | |
97 | #define MEC_WPR 0x0C8 | |
98 | ||
99 | #define MEC_UARTA 0x0E0 | |
100 | #define MEC_UARTB 0x0E4 | |
101 | #define MEC_UART_CTRL 0x0E8 | |
102 | #define SIM_LOAD 0x0F0 | |
103 | ||
104 | /* Memory exception causes */ | |
105 | #define PROT_EXC 0x3 | |
106 | #define UIMP_ACC 0x4 | |
107 | #define MEC_ACC 0x6 | |
108 | #define WATCH_EXC 0xa | |
109 | #define BREAK_EXC 0xb | |
110 | ||
111 | /* Size of UART buffers (bytes) */ | |
112 | #define UARTBUF 1024 | |
113 | ||
114 | /* Number of simulator ticks between flushing the UARTS. */ | |
115 | /* For good performance, keep above 1000 */ | |
116 | #define UART_FLUSH_TIME 3000 | |
117 | ||
118 | /* MEC timer control register bits */ | |
119 | #define TCR_GACR 1 | |
120 | #define TCR_GACL 2 | |
121 | #define TCR_GASE 4 | |
122 | #define TCR_GASL 8 | |
123 | #define TCR_TCRCR 0x100 | |
124 | #define TCR_TCRCL 0x200 | |
125 | #define TCR_TCRSE 0x400 | |
126 | #define TCR_TCRSL 0x800 | |
127 | ||
128 | /* New uart defines */ | |
129 | #define UART_TX_TIME 1000 | |
130 | #define UART_RX_TIME 1000 | |
131 | #define UARTA_DR 0x1 | |
132 | #define UARTA_SRE 0x2 | |
133 | #define UARTA_HRE 0x4 | |
134 | #define UARTA_OR 0x40 | |
135 | #define UARTA_CLR 0x80 | |
136 | #define UARTB_DR 0x10000 | |
137 | #define UARTB_SRE 0x20000 | |
138 | #define UARTB_HRE 0x40000 | |
139 | #define UARTB_OR 0x400000 | |
140 | #define UARTB_CLR 0x800000 | |
141 | ||
142 | #define UART_DR 0x100 | |
143 | #define UART_TSE 0x200 | |
144 | #define UART_THE 0x400 | |
145 | ||
146 | /* MEC registers */ | |
147 | ||
148 | static char fname[256]; | |
149 | static int32 find = 0; | |
150 | static uint32 mec_ssa[2]; /* Write protection start address */ | |
151 | static uint32 mec_sea[2]; /* Write protection end address */ | |
152 | static uint32 mec_wpr[2]; /* Write protection control fields */ | |
153 | static uint32 mec_sfsr; | |
154 | static uint32 mec_ffar; | |
155 | static uint32 mec_ipr; | |
156 | static uint32 mec_imr; | |
157 | static uint32 mec_isr; | |
158 | static uint32 mec_icr; | |
159 | static uint32 mec_ifr; | |
160 | static uint32 mec_mcr; /* MEC control register */ | |
161 | static uint32 mec_memcfg; /* Memory control register */ | |
162 | static uint32 mec_wcr; /* MEC waitstate register */ | |
163 | static uint32 mec_iocr; /* MEC IO control register */ | |
164 | static uint32 posted_irq; | |
165 | static uint32 mec_ersr; /* MEC error and status register */ | |
166 | static uint32 mec_tcr; /* MEC test comtrol register */ | |
167 | ||
168 | static uint32 rtc_counter; | |
169 | static uint32 rtc_reload; | |
170 | static uint32 rtc_scaler; | |
171 | static uint32 rtc_scaler_start; | |
172 | static uint32 rtc_enabled; | |
173 | static uint32 rtc_cr; | |
174 | static uint32 rtc_se; | |
175 | ||
176 | static uint32 gpt_counter; | |
177 | static uint32 gpt_reload; | |
178 | static uint32 gpt_scaler; | |
179 | static uint32 gpt_scaler_start; | |
180 | static uint32 gpt_enabled; | |
181 | static uint32 gpt_cr; | |
182 | static uint32 gpt_se; | |
183 | ||
184 | static uint32 wdog_scaler; | |
185 | static uint32 wdog_counter; | |
186 | static uint32 wdog_rst_delay; | |
187 | static uint32 wdog_rston; | |
188 | ||
189 | enum wdog_type { | |
190 | init, disabled, enabled, stopped | |
191 | }; | |
192 | ||
193 | static enum wdog_type wdog_status; | |
194 | ||
195 | ||
196 | /* ROM size 1024 Kbyte */ | |
197 | #define ROM_SZ 0x100000 | |
198 | #define ROM_MASK 0x0fffff | |
199 | ||
200 | /* RAM size 4 Mbyte */ | |
201 | #define RAM_START 0x02000000 | |
202 | #define RAM_END 0x02400000 | |
203 | #define RAM_MASK 0x003fffff | |
204 | ||
205 | /* SPARClite boards all seem to have RAM at the same place. */ | |
206 | #define RAM_START_SLITE 0x40000000 | |
207 | #define RAM_END_SLITE 0x40400000 | |
208 | #define RAM_MASK_SLITE 0x003fffff | |
209 | ||
210 | /* Memory support variables */ | |
211 | ||
212 | static uint32 mem_ramr_ws; /* RAM read waitstates */ | |
213 | static uint32 mem_ramw_ws; /* RAM write waitstates */ | |
214 | static uint32 mem_romr_ws; /* ROM read waitstates */ | |
215 | static uint32 mem_romw_ws; /* ROM write waitstates */ | |
216 | static uint32 mem_ramstart; /* RAM start */ | |
217 | static uint32 mem_ramend; /* RAM end */ | |
218 | static uint32 mem_rammask; /* RAM address mask */ | |
219 | static uint32 mem_ramsz; /* RAM size */ | |
220 | static uint32 mem_romsz; /* ROM size */ | |
221 | static uint32 mem_accprot; /* RAM write protection enabled */ | |
222 | static uint32 mem_blockprot; /* RAM block write protection enabled */ | |
223 | ||
224 | static unsigned char romb[ROM_SZ]; | |
225 | static unsigned char ramb[RAM_END - RAM_START]; | |
226 | ||
227 | ||
228 | /* UART support variables */ | |
229 | ||
230 | static int32 fd1, fd2; /* file descriptor for input file */ | |
231 | static int32 Ucontrol; /* UART status register */ | |
232 | static unsigned char aq[UARTBUF], bq[UARTBUF]; | |
233 | static int32 anum, aind = 0; | |
234 | static int32 bnum, bind = 0; | |
235 | static char wbufa[UARTBUF], wbufb[UARTBUF]; | |
236 | static unsigned wnuma; | |
237 | static unsigned wnumb; | |
238 | static FILE *f1in, *f1out, *f2in, *f2out; | |
239 | static struct termios ioc1, ioc2, iocold1, iocold2; | |
240 | static int f1open = 0, f2open = 0; | |
241 | ||
242 | static char uarta_sreg, uarta_hreg, uartb_sreg, uartb_hreg; | |
243 | static uint32 uart_stat_reg; | |
244 | static uint32 uarta_data, uartb_data; | |
245 | ||
246 | #ifdef ERA | |
247 | int era = 0; | |
248 | int erareg; | |
249 | #endif | |
250 | ||
251 | /* Forward declarations */ | |
252 | ||
bdca5ee4 | 253 | static void decode_ersr (void); |
c906108c | 254 | #ifdef ERRINJ |
bdca5ee4 | 255 | static void iucomperr (void); |
c906108c | 256 | #endif |
bdca5ee4 TT |
257 | static void mecparerror (void); |
258 | static void decode_memcfg (void); | |
259 | static void decode_wcr (void); | |
260 | static void decode_mcr (void); | |
261 | static void close_port (void); | |
262 | static void mec_reset (void); | |
263 | static void mec_intack (int32 level); | |
264 | static void chk_irq (void); | |
265 | static void mec_irq (int32 level); | |
266 | static void set_sfsr (uint32 fault, uint32 addr, | |
267 | uint32 asi, uint32 read); | |
268 | static int32 mec_read (uint32 addr, uint32 asi, uint32 *data); | |
269 | static int mec_write (uint32 addr, uint32 data); | |
270 | static void port_init (void); | |
271 | static uint32 read_uart (uint32 addr); | |
272 | static void write_uart (uint32 addr, uint32 data); | |
273 | static void flush_uart (void); | |
274 | static void uarta_tx (void); | |
275 | static void uartb_tx (void); | |
276 | static void uart_rx (caddr_t arg); | |
277 | static void uart_intr (caddr_t arg); | |
278 | static void uart_irq_start (void); | |
279 | static void wdog_intr (caddr_t arg); | |
280 | static void wdog_start (void); | |
281 | static void rtc_intr (caddr_t arg); | |
282 | static void rtc_start (void); | |
283 | static uint32 rtc_counter_read (void); | |
284 | static void rtc_scaler_set (uint32 val); | |
285 | static void rtc_reload_set (uint32 val); | |
286 | static void gpt_intr (caddr_t arg); | |
287 | static void gpt_start (void); | |
288 | static uint32 gpt_counter_read (void); | |
289 | static void gpt_scaler_set (uint32 val); | |
290 | static void gpt_reload_set (uint32 val); | |
291 | static void timer_ctrl (uint32 val); | |
c906108c | 292 | static unsigned char * |
bdca5ee4 | 293 | get_mem_ptr (uint32 addr, uint32 size); |
d3e9b40a JG |
294 | static void store_bytes (unsigned char *mem, uint32 waddr, |
295 | uint32 *data, int sz, int32 *ws); | |
c906108c SS |
296 | |
297 | extern int ext_irl; | |
298 | ||
299 | ||
300 | /* One-time init */ | |
301 | ||
302 | void | |
303 | init_sim() | |
304 | { | |
305 | port_init(); | |
306 | } | |
307 | ||
308 | /* Power-on reset init */ | |
309 | ||
310 | void | |
311 | reset() | |
312 | { | |
313 | mec_reset(); | |
314 | uart_irq_start(); | |
315 | wdog_start(); | |
316 | } | |
317 | ||
318 | static void | |
319 | decode_ersr() | |
320 | { | |
321 | if (mec_ersr & 0x01) { | |
322 | if (!(mec_mcr & 0x20)) { | |
323 | if (mec_mcr & 0x40) { | |
324 | sys_reset(); | |
325 | mec_ersr = 0x8000; | |
326 | if (sis_verbose) | |
327 | printf("Error manager reset - IU in error mode\n"); | |
328 | } else { | |
329 | sys_halt(); | |
330 | mec_ersr |= 0x2000; | |
331 | if (sis_verbose) | |
332 | printf("Error manager halt - IU in error mode\n"); | |
333 | } | |
334 | } else | |
335 | mec_irq(1); | |
336 | } | |
337 | if (mec_ersr & 0x04) { | |
338 | if (!(mec_mcr & 0x200)) { | |
339 | if (mec_mcr & 0x400) { | |
340 | sys_reset(); | |
341 | mec_ersr = 0x8000; | |
342 | if (sis_verbose) | |
343 | printf("Error manager reset - IU comparison error\n"); | |
344 | } else { | |
345 | sys_halt(); | |
346 | mec_ersr |= 0x2000; | |
347 | if (sis_verbose) | |
348 | printf("Error manager halt - IU comparison error\n"); | |
349 | } | |
350 | } else | |
351 | mec_irq(1); | |
352 | } | |
353 | if (mec_ersr & 0x20) { | |
354 | if (!(mec_mcr & 0x2000)) { | |
355 | if (mec_mcr & 0x4000) { | |
356 | sys_reset(); | |
357 | mec_ersr = 0x8000; | |
358 | if (sis_verbose) | |
359 | printf("Error manager reset - MEC hardware error\n"); | |
360 | } else { | |
361 | sys_halt(); | |
362 | mec_ersr |= 0x2000; | |
363 | if (sis_verbose) | |
364 | printf("Error manager halt - MEC hardware error\n"); | |
365 | } | |
366 | } else | |
367 | mec_irq(1); | |
368 | } | |
369 | } | |
370 | ||
371 | #ifdef ERRINJ | |
372 | static void | |
373 | iucomperr() | |
374 | { | |
375 | mec_ersr |= 0x04; | |
376 | decode_ersr(); | |
377 | } | |
378 | #endif | |
379 | ||
380 | static void | |
381 | mecparerror() | |
382 | { | |
383 | mec_ersr |= 0x20; | |
384 | decode_ersr(); | |
385 | } | |
386 | ||
387 | ||
388 | /* IU error mode manager */ | |
389 | ||
390 | void | |
391 | error_mode(pc) | |
392 | uint32 pc; | |
393 | { | |
394 | ||
395 | mec_ersr |= 0x1; | |
396 | decode_ersr(); | |
397 | } | |
398 | ||
399 | ||
400 | /* Check memory settings */ | |
401 | ||
402 | static void | |
403 | decode_memcfg() | |
404 | { | |
405 | if (rom8) mec_memcfg &= ~0x20000; | |
406 | else mec_memcfg |= 0x20000; | |
407 | ||
408 | mem_ramsz = (256 * 1024) << ((mec_memcfg >> 10) & 7); | |
409 | mem_romsz = (128 * 1024) << ((mec_memcfg >> 18) & 7); | |
410 | ||
411 | if (sparclite_board) { | |
412 | mem_ramstart = RAM_START_SLITE; | |
413 | mem_ramend = RAM_END_SLITE; | |
414 | mem_rammask = RAM_MASK_SLITE; | |
415 | } | |
416 | else { | |
417 | mem_ramstart = RAM_START; | |
418 | mem_ramend = RAM_END; | |
419 | mem_rammask = RAM_MASK; | |
420 | } | |
421 | if (sis_verbose) | |
422 | printf("RAM start: 0x%x, RAM size: %d K, ROM size: %d K\n", | |
423 | mem_ramstart, mem_ramsz >> 10, mem_romsz >> 10); | |
424 | } | |
425 | ||
426 | static void | |
427 | decode_wcr() | |
428 | { | |
429 | mem_ramr_ws = mec_wcr & 3; | |
430 | mem_ramw_ws = (mec_wcr >> 2) & 3; | |
431 | mem_romr_ws = (mec_wcr >> 4) & 0x0f; | |
432 | if (rom8) { | |
433 | if (mem_romr_ws > 0 ) mem_romr_ws--; | |
434 | mem_romr_ws = 5 + (4*mem_romr_ws); | |
435 | } | |
436 | mem_romw_ws = (mec_wcr >> 8) & 0x0f; | |
437 | if (sis_verbose) | |
438 | printf("Waitstates = RAM read: %d, RAM write: %d, ROM read: %d, ROM write: %d\n", | |
439 | mem_ramr_ws, mem_ramw_ws, mem_romr_ws, mem_romw_ws); | |
440 | } | |
441 | ||
442 | static void | |
443 | decode_mcr() | |
444 | { | |
445 | mem_accprot = (mec_wpr[0] | mec_wpr[1]); | |
446 | mem_blockprot = (mec_mcr >> 3) & 1; | |
447 | if (sis_verbose && mem_accprot) | |
448 | printf("Memory block write protection enabled\n"); | |
449 | if (mec_mcr & 0x08000) { | |
450 | mec_ersr |= 0x20; | |
451 | decode_ersr(); | |
452 | } | |
453 | if (sis_verbose && (mec_mcr & 2)) | |
454 | printf("Software reset enabled\n"); | |
455 | if (sis_verbose && (mec_mcr & 1)) | |
456 | printf("Power-down mode enabled\n"); | |
457 | } | |
458 | ||
459 | /* Flush ports when simulator stops */ | |
460 | ||
461 | void | |
462 | sim_halt() | |
463 | { | |
464 | #ifdef FAST_UART | |
465 | flush_uart(); | |
466 | #endif | |
467 | } | |
468 | ||
469 | int | |
470 | sim_stop(SIM_DESC sd) | |
471 | { | |
472 | ctrl_c = 1; | |
473 | return 1; | |
474 | } | |
475 | ||
476 | static void | |
477 | close_port() | |
478 | { | |
479 | if (f1open && f1in != stdin) | |
480 | fclose(f1in); | |
481 | if (f2open && f2in != stdin) | |
482 | fclose(f2in); | |
483 | } | |
484 | ||
485 | void | |
486 | exit_sim() | |
487 | { | |
488 | close_port(); | |
489 | } | |
490 | ||
491 | static void | |
492 | mec_reset() | |
493 | { | |
494 | int i; | |
495 | ||
496 | find = 0; | |
497 | for (i = 0; i < 2; i++) | |
498 | mec_ssa[i] = mec_sea[i] = mec_wpr[i] = 0; | |
499 | mec_mcr = 0x01350014; | |
500 | mec_iocr = 0; | |
501 | mec_sfsr = 0x078; | |
502 | mec_ffar = 0; | |
503 | mec_ipr = 0; | |
504 | mec_imr = 0x7ffe; | |
505 | mec_isr = 0; | |
506 | mec_icr = 0; | |
507 | mec_ifr = 0; | |
508 | mec_memcfg = 0x10000; | |
509 | mec_wcr = -1; | |
510 | mec_ersr = 0; /* MEC error and status register */ | |
511 | mec_tcr = 0; /* MEC test comtrol register */ | |
512 | ||
513 | decode_memcfg(); | |
514 | decode_wcr(); | |
515 | decode_mcr(); | |
516 | ||
517 | posted_irq = 0; | |
518 | wnuma = wnumb = 0; | |
519 | anum = aind = bnum = bind = 0; | |
520 | ||
521 | uart_stat_reg = UARTA_SRE | UARTA_HRE | UARTB_SRE | UARTB_HRE; | |
522 | uarta_data = uartb_data = UART_THE | UART_TSE; | |
523 | ||
524 | rtc_counter = 0xffffffff; | |
525 | rtc_reload = 0xffffffff; | |
526 | rtc_scaler = 0xff; | |
527 | rtc_enabled = 0; | |
528 | rtc_cr = 0; | |
529 | rtc_se = 0; | |
530 | ||
531 | gpt_counter = 0xffffffff; | |
532 | gpt_reload = 0xffffffff; | |
533 | gpt_scaler = 0xffff; | |
534 | gpt_enabled = 0; | |
535 | gpt_cr = 0; | |
536 | gpt_se = 0; | |
537 | ||
538 | wdog_scaler = 255; | |
539 | wdog_rst_delay = 255; | |
540 | wdog_counter = 0xffff; | |
541 | wdog_rston = 0; | |
542 | wdog_status = init; | |
543 | ||
544 | #ifdef ERA | |
545 | erareg = 0; | |
546 | #endif | |
547 | ||
548 | } | |
549 | ||
550 | ||
551 | ||
552 | static void | |
553 | mec_intack(level) | |
554 | int32 level; | |
555 | { | |
556 | int irq_test; | |
557 | ||
558 | if (sis_verbose) | |
559 | printf("interrupt %d acknowledged\n", level); | |
560 | irq_test = mec_tcr & 0x80000; | |
561 | if ((irq_test) && (mec_ifr & (1 << level))) | |
562 | mec_ifr &= ~(1 << level); | |
563 | else | |
564 | mec_ipr &= ~(1 << level); | |
565 | chk_irq(); | |
566 | } | |
567 | ||
568 | static void | |
569 | chk_irq() | |
570 | { | |
571 | int32 i; | |
572 | uint32 itmp; | |
573 | int old_irl; | |
574 | ||
575 | old_irl = ext_irl; | |
576 | if (mec_tcr & 0x80000) itmp = mec_ifr; | |
577 | else itmp = 0; | |
578 | itmp = ((mec_ipr | itmp) & ~mec_imr) & 0x0fffe; | |
579 | ext_irl = 0; | |
580 | if (itmp != 0) { | |
581 | for (i = 15; i > 0; i--) { | |
582 | if (((itmp >> i) & 1) != 0) { | |
583 | if ((sis_verbose) && (i > old_irl)) | |
584 | printf("IU irl: %d\n", i); | |
585 | ext_irl = i; | |
586 | set_int(i, mec_intack, i); | |
587 | break; | |
588 | } | |
589 | } | |
590 | } | |
591 | } | |
592 | ||
593 | static void | |
594 | mec_irq(level) | |
595 | int32 level; | |
596 | { | |
597 | mec_ipr |= (1 << level); | |
598 | chk_irq(); | |
599 | } | |
600 | ||
601 | static void | |
602 | set_sfsr(fault, addr, asi, read) | |
603 | uint32 fault; | |
604 | uint32 addr; | |
605 | uint32 asi; | |
606 | uint32 read; | |
607 | { | |
608 | if ((asi == 0xa) || (asi == 0xb)) { | |
609 | mec_ffar = addr; | |
610 | mec_sfsr = (fault << 3) | (!read << 15); | |
611 | mec_sfsr |= ((mec_sfsr & 1) ^ 1) | (mec_sfsr & 1); | |
612 | switch (asi) { | |
613 | case 0xa: | |
614 | mec_sfsr |= 0x0004; | |
615 | break; | |
616 | case 0xb: | |
617 | mec_sfsr |= 0x1004; | |
618 | break; | |
619 | } | |
620 | } | |
621 | } | |
622 | ||
623 | static int32 | |
624 | mec_read(addr, asi, data) | |
625 | uint32 addr; | |
626 | uint32 asi; | |
627 | uint32 *data; | |
628 | { | |
629 | ||
630 | switch (addr & 0x0ff) { | |
631 | ||
632 | case MEC_MCR: /* 0x00 */ | |
633 | *data = mec_mcr; | |
634 | break; | |
635 | ||
636 | case MEC_MEMCFG: /* 0x10 */ | |
637 | *data = mec_memcfg; | |
638 | break; | |
639 | ||
640 | case MEC_IOCR: | |
641 | *data = mec_iocr; /* 0x14 */ | |
642 | break; | |
643 | ||
644 | case MEC_SSA1: /* 0x20 */ | |
645 | *data = mec_ssa[0] | (mec_wpr[0] << 23); | |
646 | break; | |
647 | case MEC_SEA1: /* 0x24 */ | |
648 | *data = mec_sea[0]; | |
649 | break; | |
650 | case MEC_SSA2: /* 0x28 */ | |
651 | *data = mec_ssa[1] | (mec_wpr[1] << 23); | |
652 | break; | |
653 | case MEC_SEA2: /* 0x2c */ | |
654 | *data = mec_sea[1]; | |
655 | break; | |
656 | ||
657 | case MEC_ISR: /* 0x44 */ | |
658 | *data = mec_isr; | |
659 | break; | |
660 | ||
661 | case MEC_IPR: /* 0x48 */ | |
662 | *data = mec_ipr; | |
663 | break; | |
664 | ||
665 | case MEC_IMR: /* 0x4c */ | |
666 | *data = mec_imr; | |
667 | break; | |
668 | ||
669 | case MEC_IFR: /* 0x54 */ | |
670 | *data = mec_ifr; | |
671 | break; | |
672 | ||
673 | case MEC_RTC_COUNTER: /* 0x80 */ | |
674 | *data = rtc_counter_read(); | |
675 | break; | |
676 | case MEC_RTC_SCALER: /* 0x84 */ | |
677 | if (rtc_enabled) | |
678 | *data = rtc_scaler - (now() - rtc_scaler_start); | |
679 | else | |
680 | *data = rtc_scaler; | |
681 | break; | |
682 | ||
683 | case MEC_GPT_COUNTER: /* 0x88 */ | |
684 | *data = gpt_counter_read(); | |
685 | break; | |
686 | ||
687 | case MEC_GPT_SCALER: /* 0x8c */ | |
688 | if (rtc_enabled) | |
689 | *data = gpt_scaler - (now() - gpt_scaler_start); | |
690 | else | |
691 | *data = gpt_scaler; | |
692 | break; | |
693 | ||
694 | ||
695 | case MEC_SFSR: /* 0xA0 */ | |
696 | *data = mec_sfsr; | |
697 | break; | |
698 | ||
699 | case MEC_FFAR: /* 0xA4 */ | |
700 | *data = mec_ffar; | |
701 | break; | |
702 | ||
703 | case SIM_LOAD: | |
704 | fname[find] = 0; | |
705 | if (find == 0) | |
706 | strcpy(fname, "simload"); | |
707 | find = bfd_load(fname); | |
708 | if (find == -1) | |
709 | *data = 0; | |
710 | else | |
711 | *data = 1; | |
712 | find = 0; | |
713 | break; | |
714 | ||
715 | case MEC_ERSR: /* 0xB0 */ | |
716 | *data = mec_ersr; | |
717 | break; | |
718 | ||
719 | case MEC_TCR: /* 0xD0 */ | |
720 | *data = mec_tcr; | |
721 | break; | |
722 | ||
723 | case MEC_UARTA: /* 0xE0 */ | |
724 | case MEC_UARTB: /* 0xE4 */ | |
725 | if (asi != 0xb) { | |
726 | set_sfsr(MEC_ACC, addr, asi, 1); | |
5831e29b | 727 | return 1; |
c906108c SS |
728 | } |
729 | *data = read_uart(addr); | |
730 | break; | |
731 | ||
732 | case MEC_UART_CTRL: /* 0xE8 */ | |
733 | ||
734 | *data = read_uart(addr); | |
735 | break; | |
736 | ||
20a0ffe3 JG |
737 | case 0xF4: /* simulator RAM size in bytes */ |
738 | *data = 4096*1024; | |
739 | break; | |
740 | ||
741 | case 0xF8: /* simulator ROM size in bytes */ | |
742 | *data = 1024*1024; | |
743 | break; | |
744 | ||
c906108c SS |
745 | default: |
746 | set_sfsr(MEC_ACC, addr, asi, 1); | |
5831e29b | 747 | return 1; |
c906108c SS |
748 | break; |
749 | } | |
5831e29b | 750 | return MOK; |
c906108c SS |
751 | } |
752 | ||
753 | static int | |
754 | mec_write(addr, data) | |
755 | uint32 addr; | |
756 | uint32 data; | |
757 | { | |
758 | if (sis_verbose > 1) | |
759 | printf("MEC write a: %08x, d: %08x\n",addr,data); | |
760 | switch (addr & 0x0ff) { | |
761 | ||
762 | case MEC_MCR: | |
763 | mec_mcr = data; | |
764 | decode_mcr(); | |
765 | if (mec_mcr & 0x08000) mecparerror(); | |
766 | break; | |
767 | ||
768 | case MEC_SFR: | |
769 | if (mec_mcr & 0x2) { | |
770 | sys_reset(); | |
771 | mec_ersr = 0x4000; | |
772 | if (sis_verbose) | |
773 | printf(" Software reset issued\n"); | |
774 | } | |
775 | break; | |
776 | ||
777 | case MEC_IOCR: | |
778 | mec_iocr = data; | |
779 | if (mec_iocr & 0xC0C0C0C0) mecparerror(); | |
780 | break; | |
781 | ||
782 | case MEC_SSA1: /* 0x20 */ | |
783 | if (data & 0xFE000000) mecparerror(); | |
784 | mec_ssa[0] = data & 0x7fffff; | |
785 | mec_wpr[0] = (data >> 23) & 0x03; | |
786 | mem_accprot = mec_wpr[0] || mec_wpr[1]; | |
787 | if (sis_verbose && mec_wpr[0]) | |
788 | printf("Segment 1 memory protection enabled (0x02%06x - 0x02%06x)\n", | |
789 | mec_ssa[0] << 2, mec_sea[0] << 2); | |
790 | break; | |
791 | case MEC_SEA1: /* 0x24 */ | |
792 | if (data & 0xFF800000) mecparerror(); | |
793 | mec_sea[0] = data & 0x7fffff; | |
794 | break; | |
795 | case MEC_SSA2: /* 0x28 */ | |
796 | if (data & 0xFE000000) mecparerror(); | |
797 | mec_ssa[1] = data & 0x7fffff; | |
798 | mec_wpr[1] = (data >> 23) & 0x03; | |
799 | mem_accprot = mec_wpr[0] || mec_wpr[1]; | |
800 | if (sis_verbose && mec_wpr[1]) | |
801 | printf("Segment 2 memory protection enabled (0x02%06x - 0x02%06x)\n", | |
802 | mec_ssa[1] << 2, mec_sea[1] << 2); | |
803 | break; | |
804 | case MEC_SEA2: /* 0x2c */ | |
805 | if (data & 0xFF800000) mecparerror(); | |
806 | mec_sea[1] = data & 0x7fffff; | |
807 | break; | |
808 | ||
809 | case MEC_UARTA: | |
810 | case MEC_UARTB: | |
811 | if (data & 0xFFFFFF00) mecparerror(); | |
812 | case MEC_UART_CTRL: | |
813 | if (data & 0xFF00FF00) mecparerror(); | |
814 | write_uart(addr, data); | |
815 | break; | |
816 | ||
817 | case MEC_GPT_RELOAD: | |
818 | gpt_reload_set(data); | |
819 | break; | |
820 | ||
821 | case MEC_GPT_SCALER: | |
822 | if (data & 0xFFFF0000) mecparerror(); | |
823 | gpt_scaler_set(data); | |
824 | break; | |
825 | ||
826 | case MEC_TIMER_CTRL: | |
827 | if (data & 0xFFFFF0F0) mecparerror(); | |
828 | timer_ctrl(data); | |
829 | break; | |
830 | ||
831 | case MEC_RTC_RELOAD: | |
832 | rtc_reload_set(data); | |
833 | break; | |
834 | ||
835 | case MEC_RTC_SCALER: | |
836 | if (data & 0xFFFFFF00) mecparerror(); | |
837 | rtc_scaler_set(data); | |
838 | break; | |
839 | ||
840 | case MEC_SFSR: /* 0xA0 */ | |
841 | if (data & 0xFFFF0880) mecparerror(); | |
842 | mec_sfsr = 0x78; | |
843 | break; | |
844 | ||
845 | case MEC_ISR: | |
846 | if (data & 0xFFFFE000) mecparerror(); | |
847 | mec_isr = data; | |
848 | break; | |
849 | ||
850 | case MEC_IMR: /* 0x4c */ | |
851 | ||
852 | if (data & 0xFFFF8001) mecparerror(); | |
853 | mec_imr = data & 0x7ffe; | |
854 | chk_irq(); | |
855 | break; | |
856 | ||
857 | case MEC_ICR: /* 0x50 */ | |
858 | ||
859 | if (data & 0xFFFF0001) mecparerror(); | |
860 | mec_ipr &= ~data & 0x0fffe; | |
861 | chk_irq(); | |
862 | break; | |
863 | ||
864 | case MEC_IFR: /* 0x54 */ | |
865 | ||
866 | if (mec_tcr & 0x080000) { | |
867 | if (data & 0xFFFF0001) mecparerror(); | |
868 | mec_ifr = data & 0xfffe; | |
869 | chk_irq(); | |
870 | } | |
871 | break; | |
872 | case SIM_LOAD: | |
873 | fname[find++] = (char) data; | |
874 | break; | |
875 | ||
876 | ||
877 | case MEC_MEMCFG: /* 0x10 */ | |
878 | if (data & 0xC0E08000) mecparerror(); | |
879 | mec_memcfg = data; | |
880 | decode_memcfg(); | |
881 | if (mec_memcfg & 0xc0e08000) | |
882 | mecparerror(); | |
883 | break; | |
884 | ||
885 | case MEC_WCR: /* 0x18 */ | |
886 | mec_wcr = data; | |
887 | decode_wcr(); | |
888 | break; | |
889 | ||
890 | case MEC_ERSR: /* 0xB0 */ | |
891 | if (mec_tcr & 0x100000) | |
892 | if (data & 0xFFFFEFC0) mecparerror(); | |
893 | mec_ersr = data & 0x103f; | |
894 | break; | |
895 | ||
896 | case MEC_TCR: /* 0xD0 */ | |
897 | if (data & 0xFFE1FFC0) mecparerror(); | |
898 | mec_tcr = data & 0x1e003f; | |
899 | break; | |
900 | ||
901 | case MEC_WDOG: /* 0x60 */ | |
902 | wdog_scaler = (data >> 16) & 0x0ff; | |
903 | wdog_counter = data & 0x0ffff; | |
904 | wdog_rst_delay = data >> 24; | |
905 | wdog_rston = 0; | |
906 | if (wdog_status == stopped) | |
907 | wdog_start(); | |
908 | wdog_status = enabled; | |
909 | break; | |
910 | ||
911 | case MEC_TRAPD: /* 0x64 */ | |
912 | if (wdog_status == init) { | |
913 | wdog_status = disabled; | |
914 | if (sis_verbose) | |
915 | printf("Watchdog disabled\n"); | |
916 | } | |
917 | break; | |
918 | ||
919 | case MEC_PWDR: | |
920 | if (mec_mcr & 1) | |
921 | wait_for_irq(); | |
922 | break; | |
923 | ||
924 | default: | |
925 | set_sfsr(MEC_ACC, addr, 0xb, 0); | |
5831e29b | 926 | return 1; |
c906108c SS |
927 | break; |
928 | } | |
5831e29b | 929 | return MOK; |
c906108c SS |
930 | } |
931 | ||
932 | ||
933 | /* MEC UARTS */ | |
934 | ||
935 | static int ifd1 = -1, ifd2 = -1, ofd1 = -1, ofd2 = -1; | |
936 | ||
937 | void | |
938 | init_stdio() | |
939 | { | |
940 | if (dumbio) | |
941 | return; /* do nothing */ | |
942 | if (!ifd1) | |
943 | tcsetattr(0, TCSANOW, &ioc1); | |
944 | if (!ifd2) | |
945 | tcsetattr(0, TCSANOW, &ioc2); | |
946 | } | |
947 | ||
948 | void | |
949 | restore_stdio() | |
950 | { | |
951 | if (dumbio) | |
952 | return; /* do nothing */ | |
953 | if (!ifd1) | |
954 | tcsetattr(0, TCSANOW, &iocold1); | |
955 | if (!ifd2) | |
956 | tcsetattr(0, TCSANOW, &iocold2); | |
957 | } | |
958 | ||
959 | #define DO_STDIO_READ( _fd_, _buf_, _len_ ) \ | |
960 | ( dumbio \ | |
961 | ? (0) /* no bytes read, no delay */ \ | |
962 | : read( _fd_, _buf_, _len_ ) ) | |
963 | ||
964 | ||
965 | static void | |
966 | port_init() | |
967 | { | |
968 | ||
969 | if (uben) { | |
970 | f2in = stdin; | |
971 | f1in = NULL; | |
972 | f2out = stdout; | |
973 | f1out = NULL; | |
974 | } else { | |
975 | f1in = stdin; | |
976 | f2in = NULL; | |
977 | f1out = stdout; | |
978 | f2out = NULL; | |
979 | } | |
980 | if (uart_dev1[0] != 0) | |
981 | if ((fd1 = open(uart_dev1, O_RDWR | O_NONBLOCK)) < 0) { | |
982 | printf("Warning, couldn't open output device %s\n", uart_dev1); | |
983 | } else { | |
984 | if (sis_verbose) | |
985 | printf("serial port A on %s\n", uart_dev1); | |
986 | f1in = f1out = fdopen(fd1, "r+"); | |
987 | setbuf(f1out, NULL); | |
988 | f1open = 1; | |
989 | } | |
990 | if (f1in) ifd1 = fileno(f1in); | |
991 | if (ifd1 == 0) { | |
992 | if (sis_verbose) | |
993 | printf("serial port A on stdin/stdout\n"); | |
994 | if (!dumbio) { | |
995 | tcgetattr(ifd1, &ioc1); | |
996 | iocold1 = ioc1; | |
997 | ioc1.c_lflag &= ~(ICANON | ECHO); | |
998 | ioc1.c_cc[VMIN] = 0; | |
999 | ioc1.c_cc[VTIME] = 0; | |
1000 | } | |
1001 | f1open = 1; | |
1002 | } | |
1003 | ||
1004 | if (f1out) { | |
1005 | ofd1 = fileno(f1out); | |
1006 | if (!dumbio && ofd1 == 1) setbuf(f1out, NULL); | |
1007 | } | |
1008 | ||
1009 | if (uart_dev2[0] != 0) | |
1010 | if ((fd2 = open(uart_dev2, O_RDWR | O_NONBLOCK)) < 0) { | |
1011 | printf("Warning, couldn't open output device %s\n", uart_dev2); | |
1012 | } else { | |
1013 | if (sis_verbose) | |
1014 | printf("serial port B on %s\n", uart_dev2); | |
1015 | f2in = f2out = fdopen(fd2, "r+"); | |
1016 | setbuf(f2out, NULL); | |
1017 | f2open = 1; | |
1018 | } | |
1019 | if (f2in) ifd2 = fileno(f2in); | |
1020 | if (ifd2 == 0) { | |
1021 | if (sis_verbose) | |
1022 | printf("serial port B on stdin/stdout\n"); | |
1023 | if (!dumbio) { | |
1024 | tcgetattr(ifd2, &ioc2); | |
1025 | iocold2 = ioc2; | |
1026 | ioc2.c_lflag &= ~(ICANON | ECHO); | |
1027 | ioc2.c_cc[VMIN] = 0; | |
1028 | ioc2.c_cc[VTIME] = 0; | |
1029 | } | |
1030 | f2open = 1; | |
1031 | } | |
1032 | ||
1033 | if (f2out) { | |
1034 | ofd2 = fileno(f2out); | |
1035 | if (!dumbio && ofd2 == 1) setbuf(f2out, NULL); | |
1036 | } | |
1037 | ||
1038 | wnuma = wnumb = 0; | |
1039 | ||
1040 | } | |
1041 | ||
1042 | static uint32 | |
1043 | read_uart(addr) | |
1044 | uint32 addr; | |
1045 | { | |
1046 | ||
1047 | unsigned tmp; | |
1048 | ||
1049 | tmp = 0; | |
1050 | switch (addr & 0xff) { | |
1051 | ||
1052 | case 0xE0: /* UART 1 */ | |
1053 | #ifndef _WIN32 | |
1054 | #ifdef FAST_UART | |
1055 | ||
1056 | if (aind < anum) { | |
1057 | if ((aind + 1) < anum) | |
1058 | mec_irq(4); | |
1059 | return (0x700 | (uint32) aq[aind++]); | |
1060 | } else { | |
1061 | if (f1open) { | |
1062 | anum = DO_STDIO_READ(ifd1, aq, UARTBUF); | |
1063 | } | |
1064 | if (anum > 0) { | |
1065 | aind = 0; | |
1066 | if ((aind + 1) < anum) | |
1067 | mec_irq(4); | |
1068 | return (0x700 | (uint32) aq[aind++]); | |
1069 | } else { | |
1070 | return (0x600 | (uint32) aq[aind]); | |
1071 | } | |
1072 | ||
1073 | } | |
1074 | #else | |
1075 | tmp = uarta_data; | |
1076 | uarta_data &= ~UART_DR; | |
1077 | uart_stat_reg &= ~UARTA_DR; | |
1078 | return tmp; | |
1079 | #endif | |
1080 | #else | |
5831e29b | 1081 | return 0; |
c906108c SS |
1082 | #endif |
1083 | break; | |
1084 | ||
1085 | case 0xE4: /* UART 2 */ | |
1086 | #ifndef _WIN32 | |
1087 | #ifdef FAST_UART | |
1088 | if (bind < bnum) { | |
1089 | if ((bind + 1) < bnum) | |
1090 | mec_irq(5); | |
1091 | return (0x700 | (uint32) bq[bind++]); | |
1092 | } else { | |
1093 | if (f2open) { | |
1094 | bnum = DO_STDIO_READ(ifd2, bq, UARTBUF); | |
1095 | } | |
1096 | if (bnum > 0) { | |
1097 | bind = 0; | |
1098 | if ((bind + 1) < bnum) | |
1099 | mec_irq(5); | |
1100 | return (0x700 | (uint32) bq[bind++]); | |
1101 | } else { | |
1102 | return (0x600 | (uint32) bq[bind]); | |
1103 | } | |
1104 | ||
1105 | } | |
1106 | #else | |
1107 | tmp = uartb_data; | |
1108 | uartb_data &= ~UART_DR; | |
1109 | uart_stat_reg &= ~UARTB_DR; | |
1110 | return tmp; | |
1111 | #endif | |
1112 | #else | |
5831e29b | 1113 | return 0; |
c906108c SS |
1114 | #endif |
1115 | break; | |
1116 | ||
1117 | case 0xE8: /* UART status register */ | |
1118 | #ifndef _WIN32 | |
1119 | #ifdef FAST_UART | |
1120 | ||
1121 | Ucontrol = 0; | |
1122 | if (aind < anum) { | |
1123 | Ucontrol |= 0x00000001; | |
1124 | } else { | |
1125 | if (f1open) { | |
1126 | anum = DO_STDIO_READ(ifd1, aq, UARTBUF); | |
1127 | } | |
1128 | if (anum > 0) { | |
1129 | Ucontrol |= 0x00000001; | |
1130 | aind = 0; | |
1131 | mec_irq(4); | |
1132 | } | |
1133 | } | |
1134 | if (bind < bnum) { | |
1135 | Ucontrol |= 0x00010000; | |
1136 | } else { | |
1137 | if (f2open) { | |
1138 | bnum = DO_STDIO_READ(ifd2, bq, UARTBUF); | |
1139 | } | |
1140 | if (bnum > 0) { | |
1141 | Ucontrol |= 0x00010000; | |
1142 | bind = 0; | |
1143 | mec_irq(5); | |
1144 | } | |
1145 | } | |
1146 | ||
1147 | Ucontrol |= 0x00060006; | |
5831e29b | 1148 | return Ucontrol; |
c906108c | 1149 | #else |
5831e29b | 1150 | return uart_stat_reg; |
c906108c SS |
1151 | #endif |
1152 | #else | |
5831e29b | 1153 | return 0x00060006; |
c906108c SS |
1154 | #endif |
1155 | break; | |
1156 | default: | |
1157 | if (sis_verbose) | |
1158 | printf("Read from unimplemented MEC register (%x)\n", addr); | |
1159 | ||
1160 | } | |
5831e29b | 1161 | return 0; |
c906108c SS |
1162 | } |
1163 | ||
1164 | static void | |
1165 | write_uart(addr, data) | |
1166 | uint32 addr; | |
1167 | uint32 data; | |
1168 | { | |
1169 | unsigned char c; | |
1170 | ||
1171 | c = (unsigned char) data; | |
1172 | switch (addr & 0xff) { | |
1173 | ||
1174 | case 0xE0: /* UART A */ | |
1175 | #ifdef FAST_UART | |
1176 | if (f1open) { | |
1177 | if (wnuma < UARTBUF) | |
1178 | wbufa[wnuma++] = c; | |
1179 | else { | |
1180 | while (wnuma) | |
1181 | wnuma -= fwrite(wbufa, 1, wnuma, f1out); | |
1182 | wbufa[wnuma++] = c; | |
1183 | } | |
1184 | } | |
1185 | mec_irq(4); | |
1186 | #else | |
1187 | if (uart_stat_reg & UARTA_SRE) { | |
1188 | uarta_sreg = c; | |
1189 | uart_stat_reg &= ~UARTA_SRE; | |
1190 | event(uarta_tx, 0, UART_TX_TIME); | |
1191 | } else { | |
1192 | uarta_hreg = c; | |
1193 | uart_stat_reg &= ~UARTA_HRE; | |
1194 | } | |
1195 | #endif | |
1196 | break; | |
1197 | ||
1198 | case 0xE4: /* UART B */ | |
1199 | #ifdef FAST_UART | |
1200 | if (f2open) { | |
1201 | if (wnumb < UARTBUF) | |
1202 | wbufb[wnumb++] = c; | |
1203 | else { | |
1204 | while (wnumb) | |
1205 | wnumb -= fwrite(wbufb, 1, wnumb, f2out); | |
1206 | wbufb[wnumb++] = c; | |
1207 | } | |
1208 | } | |
1209 | mec_irq(5); | |
1210 | #else | |
1211 | if (uart_stat_reg & UARTB_SRE) { | |
1212 | uartb_sreg = c; | |
1213 | uart_stat_reg &= ~UARTB_SRE; | |
1214 | event(uartb_tx, 0, UART_TX_TIME); | |
1215 | } else { | |
1216 | uartb_hreg = c; | |
1217 | uart_stat_reg &= ~UARTB_HRE; | |
1218 | } | |
1219 | #endif | |
1220 | break; | |
1221 | case 0xE8: /* UART status register */ | |
1222 | #ifndef FAST_UART | |
1223 | if (data & UARTA_CLR) { | |
1224 | uart_stat_reg &= 0xFFFF0000; | |
1225 | uart_stat_reg |= UARTA_SRE | UARTA_HRE; | |
1226 | } | |
1227 | if (data & UARTB_CLR) { | |
1228 | uart_stat_reg &= 0x0000FFFF; | |
1229 | uart_stat_reg |= UARTB_SRE | UARTB_HRE; | |
1230 | } | |
1231 | #endif | |
1232 | break; | |
1233 | default: | |
1234 | if (sis_verbose) | |
1235 | printf("Write to unimplemented MEC register (%x)\n", addr); | |
1236 | ||
1237 | } | |
1238 | } | |
1239 | ||
1240 | static void | |
1241 | flush_uart() | |
1242 | { | |
1243 | while (wnuma && f1open) | |
1244 | wnuma -= fwrite(wbufa, 1, wnuma, f1out); | |
1245 | while (wnumb && f2open) | |
1246 | wnumb -= fwrite(wbufb, 1, wnumb, f2out); | |
1247 | } | |
1248 | ||
1249 | ||
1250 | ||
1251 | static void | |
1252 | uarta_tx() | |
1253 | { | |
1254 | ||
1255 | while (f1open && fwrite(&uarta_sreg, 1, 1, f1out) != 1); | |
1256 | if (uart_stat_reg & UARTA_HRE) { | |
1257 | uart_stat_reg |= UARTA_SRE; | |
1258 | } else { | |
1259 | uarta_sreg = uarta_hreg; | |
1260 | uart_stat_reg |= UARTA_HRE; | |
1261 | event(uarta_tx, 0, UART_TX_TIME); | |
1262 | } | |
1263 | mec_irq(4); | |
1264 | } | |
1265 | ||
1266 | static void | |
1267 | uartb_tx() | |
1268 | { | |
1269 | while (f2open && fwrite(&uartb_sreg, 1, 1, f2out) != 1); | |
1270 | if (uart_stat_reg & UARTB_HRE) { | |
1271 | uart_stat_reg |= UARTB_SRE; | |
1272 | } else { | |
1273 | uartb_sreg = uartb_hreg; | |
1274 | uart_stat_reg |= UARTB_HRE; | |
1275 | event(uartb_tx, 0, UART_TX_TIME); | |
1276 | } | |
1277 | mec_irq(5); | |
1278 | } | |
1279 | ||
1280 | static void | |
1281 | uart_rx(arg) | |
1282 | caddr_t arg; | |
1283 | { | |
1284 | int32 rsize; | |
1285 | char rxd; | |
1286 | ||
1287 | ||
1288 | rsize = 0; | |
1289 | if (f1open) | |
1290 | rsize = DO_STDIO_READ(ifd1, &rxd, 1); | |
1291 | if (rsize > 0) { | |
1292 | uarta_data = UART_DR | rxd; | |
1293 | if (uart_stat_reg & UARTA_HRE) | |
1294 | uarta_data |= UART_THE; | |
1295 | if (uart_stat_reg & UARTA_SRE) | |
1296 | uarta_data |= UART_TSE; | |
1297 | if (uart_stat_reg & UARTA_DR) { | |
1298 | uart_stat_reg |= UARTA_OR; | |
1299 | mec_irq(7); /* UART error interrupt */ | |
1300 | } | |
1301 | uart_stat_reg |= UARTA_DR; | |
1302 | mec_irq(4); | |
1303 | } | |
1304 | rsize = 0; | |
1305 | if (f2open) | |
1306 | rsize = DO_STDIO_READ(ifd2, &rxd, 1); | |
1307 | if (rsize) { | |
1308 | uartb_data = UART_DR | rxd; | |
1309 | if (uart_stat_reg & UARTB_HRE) | |
1310 | uartb_data |= UART_THE; | |
1311 | if (uart_stat_reg & UARTB_SRE) | |
1312 | uartb_data |= UART_TSE; | |
1313 | if (uart_stat_reg & UARTB_DR) { | |
1314 | uart_stat_reg |= UARTB_OR; | |
1315 | mec_irq(7); /* UART error interrupt */ | |
1316 | } | |
1317 | uart_stat_reg |= UARTB_DR; | |
1318 | mec_irq(5); | |
1319 | } | |
1320 | event(uart_rx, 0, UART_RX_TIME); | |
1321 | } | |
1322 | ||
1323 | static void | |
1324 | uart_intr(arg) | |
1325 | caddr_t arg; | |
1326 | { | |
1327 | read_uart(0xE8); /* Check for UART interrupts every 1000 clk */ | |
1328 | flush_uart(); /* Flush UART ports */ | |
1329 | event(uart_intr, 0, UART_FLUSH_TIME); | |
1330 | } | |
1331 | ||
1332 | ||
1333 | static void | |
1334 | uart_irq_start() | |
1335 | { | |
1336 | #ifdef FAST_UART | |
1337 | event(uart_intr, 0, UART_FLUSH_TIME); | |
1338 | #else | |
1339 | #ifndef _WIN32 | |
1340 | event(uart_rx, 0, UART_RX_TIME); | |
1341 | #endif | |
1342 | #endif | |
1343 | } | |
1344 | ||
1345 | /* Watch-dog */ | |
1346 | ||
1347 | static void | |
1348 | wdog_intr(arg) | |
1349 | caddr_t arg; | |
1350 | { | |
1351 | if (wdog_status == disabled) { | |
1352 | wdog_status = stopped; | |
1353 | } else { | |
1354 | ||
1355 | if (wdog_counter) { | |
1356 | wdog_counter--; | |
1357 | event(wdog_intr, 0, wdog_scaler + 1); | |
1358 | } else { | |
1359 | if (wdog_rston) { | |
1360 | printf("Watchdog reset!\n"); | |
1361 | sys_reset(); | |
1362 | mec_ersr = 0xC000; | |
1363 | } else { | |
1364 | mec_irq(15); | |
1365 | wdog_rston = 1; | |
1366 | wdog_counter = wdog_rst_delay; | |
1367 | event(wdog_intr, 0, wdog_scaler + 1); | |
1368 | } | |
1369 | } | |
1370 | } | |
1371 | } | |
1372 | ||
1373 | static void | |
1374 | wdog_start() | |
1375 | { | |
1376 | event(wdog_intr, 0, wdog_scaler + 1); | |
1377 | if (sis_verbose) | |
1378 | printf("Watchdog started, scaler = %d, counter = %d\n", | |
1379 | wdog_scaler, wdog_counter); | |
1380 | } | |
1381 | ||
1382 | ||
1383 | /* MEC timers */ | |
1384 | ||
1385 | ||
1386 | static void | |
1387 | rtc_intr(arg) | |
1388 | caddr_t arg; | |
1389 | { | |
1390 | if (rtc_counter == 0) { | |
1391 | ||
1392 | mec_irq(13); | |
1393 | if (rtc_cr) | |
1394 | rtc_counter = rtc_reload; | |
1395 | else | |
1396 | rtc_se = 0; | |
1397 | } else | |
1398 | rtc_counter -= 1; | |
1399 | if (rtc_se) { | |
1400 | event(rtc_intr, 0, rtc_scaler + 1); | |
1401 | rtc_scaler_start = now(); | |
1402 | rtc_enabled = 1; | |
1403 | } else { | |
1404 | if (sis_verbose) | |
1405 | printf("RTC stopped\n\r"); | |
1406 | rtc_enabled = 0; | |
1407 | } | |
1408 | } | |
1409 | ||
1410 | static void | |
1411 | rtc_start() | |
1412 | { | |
1413 | if (sis_verbose) | |
1414 | printf("RTC started (period %d)\n\r", rtc_scaler + 1); | |
1415 | event(rtc_intr, 0, rtc_scaler + 1); | |
1416 | rtc_scaler_start = now(); | |
1417 | rtc_enabled = 1; | |
1418 | } | |
1419 | ||
1420 | static uint32 | |
1421 | rtc_counter_read() | |
1422 | { | |
5831e29b | 1423 | return rtc_counter; |
c906108c SS |
1424 | } |
1425 | ||
1426 | static void | |
1427 | rtc_scaler_set(val) | |
1428 | uint32 val; | |
1429 | { | |
1430 | rtc_scaler = val & 0x0ff; /* eight-bit scaler only */ | |
1431 | } | |
1432 | ||
1433 | static void | |
1434 | rtc_reload_set(val) | |
1435 | uint32 val; | |
1436 | { | |
1437 | rtc_reload = val; | |
1438 | } | |
1439 | ||
1440 | static void | |
1441 | gpt_intr(arg) | |
1442 | caddr_t arg; | |
1443 | { | |
1444 | if (gpt_counter == 0) { | |
1445 | mec_irq(12); | |
1446 | if (gpt_cr) | |
1447 | gpt_counter = gpt_reload; | |
1448 | else | |
1449 | gpt_se = 0; | |
1450 | } else | |
1451 | gpt_counter -= 1; | |
1452 | if (gpt_se) { | |
1453 | event(gpt_intr, 0, gpt_scaler + 1); | |
1454 | gpt_scaler_start = now(); | |
1455 | gpt_enabled = 1; | |
1456 | } else { | |
1457 | if (sis_verbose) | |
1458 | printf("GPT stopped\n\r"); | |
1459 | gpt_enabled = 0; | |
1460 | } | |
1461 | } | |
1462 | ||
1463 | static void | |
1464 | gpt_start() | |
1465 | { | |
1466 | if (sis_verbose) | |
1467 | printf("GPT started (period %d)\n\r", gpt_scaler + 1); | |
1468 | event(gpt_intr, 0, gpt_scaler + 1); | |
1469 | gpt_scaler_start = now(); | |
1470 | gpt_enabled = 1; | |
1471 | } | |
1472 | ||
1473 | static uint32 | |
1474 | gpt_counter_read() | |
1475 | { | |
5831e29b | 1476 | return gpt_counter; |
c906108c SS |
1477 | } |
1478 | ||
1479 | static void | |
1480 | gpt_scaler_set(val) | |
1481 | uint32 val; | |
1482 | { | |
1483 | gpt_scaler = val & 0x0ffff; /* 16-bit scaler */ | |
1484 | } | |
1485 | ||
1486 | static void | |
1487 | gpt_reload_set(val) | |
1488 | uint32 val; | |
1489 | { | |
1490 | gpt_reload = val; | |
1491 | } | |
1492 | ||
1493 | static void | |
1494 | timer_ctrl(val) | |
1495 | uint32 val; | |
1496 | { | |
1497 | ||
1498 | rtc_cr = ((val & TCR_TCRCR) != 0); | |
1499 | if (val & TCR_TCRCL) { | |
1500 | rtc_counter = rtc_reload; | |
1501 | } | |
1502 | if (val & TCR_TCRSL) { | |
1503 | } | |
1504 | rtc_se = ((val & TCR_TCRSE) != 0); | |
1505 | if (rtc_se && (rtc_enabled == 0)) | |
1506 | rtc_start(); | |
1507 | ||
1508 | gpt_cr = (val & TCR_GACR); | |
1509 | if (val & TCR_GACL) { | |
1510 | gpt_counter = gpt_reload; | |
1511 | } | |
1512 | if (val & TCR_GACL) { | |
1513 | } | |
1514 | gpt_se = (val & TCR_GASE) >> 2; | |
1515 | if (gpt_se && (gpt_enabled == 0)) | |
1516 | gpt_start(); | |
1517 | } | |
1518 | ||
d3e9b40a JG |
1519 | /* Store data in host byte order. MEM points to the beginning of the |
1520 | emulated memory; WADDR contains the index the emulated memory, | |
1521 | DATA points to words in host byte order to be stored. SZ contains log(2) | |
1522 | of the number of bytes to retrieve, and can be 0 (1 byte), 1 (one half-word), | |
1523 | 2 (one word), or 3 (two words); WS should return the number of | |
1524 | wait-states. */ | |
c906108c SS |
1525 | |
1526 | static void | |
d3e9b40a JG |
1527 | store_bytes (unsigned char *mem, uint32 waddr, uint32 *data, int32 sz, |
1528 | int32 *ws) | |
c906108c | 1529 | { |
d3e9b40a | 1530 | switch (sz) { |
c906108c | 1531 | case 0: |
d3e9b40a JG |
1532 | waddr ^= EBT; |
1533 | mem[waddr] = *data & 0x0ff; | |
1534 | *ws = mem_ramw_ws + 3; | |
c906108c SS |
1535 | break; |
1536 | case 1: | |
d3e9b40a JG |
1537 | #ifdef HOST_LITTLE_ENDIAN |
1538 | waddr ^= 2; | |
1539 | #endif | |
1540 | memcpy (&mem[waddr], data, 2); | |
1541 | *ws = mem_ramw_ws + 3; | |
c906108c | 1542 | break; |
c906108c | 1543 | case 2: |
d3e9b40a JG |
1544 | memcpy (&mem[waddr], data, 4); |
1545 | *ws = mem_ramw_ws; | |
c906108c | 1546 | break; |
c906108c | 1547 | case 3: |
d3e9b40a JG |
1548 | memcpy (&mem[waddr], data, 8); |
1549 | *ws = 2 * mem_ramw_ws + STD_WS; | |
c906108c | 1550 | break; |
c906108c SS |
1551 | } |
1552 | } | |
1553 | ||
1554 | ||
1555 | /* Memory emulation */ | |
1556 | ||
102b920e JG |
1557 | int |
1558 | memory_iread (uint32 addr, uint32 *data, int32 *ws) | |
1559 | { | |
1560 | uint32 asi; | |
1561 | if ((addr >= mem_ramstart) && (addr < (mem_ramstart + mem_ramsz))) { | |
1562 | memcpy (data, &ramb[addr & mem_rammask & ~3], 4); | |
1563 | *ws = mem_ramr_ws; | |
1564 | return 0; | |
1565 | } else if (addr < mem_romsz) { | |
1566 | memcpy (data, &romb[addr & ~3], 4); | |
1567 | *ws = mem_romr_ws; | |
1568 | return 0; | |
1569 | } | |
1570 | ||
1571 | if (sis_verbose) | |
1572 | printf ("Memory exception at %x (illegal address)\n", addr); | |
1573 | if (sregs.psr & 0x080) | |
1574 | asi = 9; | |
1575 | else | |
1576 | asi = 8; | |
1577 | set_sfsr (UIMP_ACC, addr, asi, 1); | |
1578 | *ws = MEM_EX_WS; | |
1579 | return 1; | |
1580 | } | |
1581 | ||
c906108c SS |
1582 | int |
1583 | memory_read(asi, addr, data, sz, ws) | |
1584 | int32 asi; | |
1585 | uint32 addr; | |
1586 | uint32 *data; | |
1587 | int32 sz; | |
1588 | int32 *ws; | |
1589 | { | |
1590 | int32 mexc; | |
1591 | ||
1592 | #ifdef ERRINJ | |
1593 | if (errmec) { | |
1594 | if (sis_verbose) | |
1595 | printf("Inserted MEC error %d\n",errmec); | |
1596 | set_sfsr(errmec, addr, asi, 1); | |
1597 | if (errmec == 5) mecparerror(); | |
1598 | if (errmec == 6) iucomperr(); | |
1599 | errmec = 0; | |
5831e29b | 1600 | return 1; |
c906108c | 1601 | } |
d68c23cd | 1602 | #endif |
c906108c SS |
1603 | |
1604 | if ((addr >= mem_ramstart) && (addr < (mem_ramstart + mem_ramsz))) { | |
d3e9b40a | 1605 | memcpy (data, &ramb[addr & mem_rammask & ~3], 4); |
c906108c | 1606 | *ws = mem_ramr_ws; |
5831e29b | 1607 | return 0; |
c906108c SS |
1608 | } else if ((addr >= MEC_START) && (addr < MEC_END)) { |
1609 | mexc = mec_read(addr, asi, data); | |
1610 | if (mexc) { | |
1611 | set_sfsr(MEC_ACC, addr, asi, 1); | |
1612 | *ws = MEM_EX_WS; | |
1613 | } else { | |
1614 | *ws = 0; | |
1615 | } | |
5831e29b | 1616 | return mexc; |
c906108c SS |
1617 | |
1618 | #ifdef ERA | |
1619 | ||
1620 | } else if (era) { | |
1621 | if ((addr < 0x100000) || | |
1622 | ((addr>= 0x80000000) && (addr < 0x80100000))) { | |
d3e9b40a | 1623 | memcpy (data, &romb[addr & ROM_MASK & ~3], 4); |
c906108c | 1624 | *ws = 4; |
5831e29b | 1625 | return 0; |
c906108c SS |
1626 | } else if ((addr >= 0x10000000) && |
1627 | (addr < (0x10000000 + (512 << (mec_iocr & 0x0f)))) && | |
1628 | (mec_iocr & 0x10)) { | |
1629 | *data = erareg; | |
5831e29b | 1630 | return 0; |
c906108c SS |
1631 | } |
1632 | ||
1633 | } else if (addr < mem_romsz) { | |
d3e9b40a JG |
1634 | memcpy (data, &romb[addr & ~3], 4); |
1635 | *ws = mem_romr_ws; | |
1636 | return 0; | |
c906108c SS |
1637 | #else |
1638 | } else if (addr < mem_romsz) { | |
d3e9b40a | 1639 | memcpy (data, &romb[addr & ~3], 4); |
c906108c | 1640 | *ws = mem_romr_ws; |
5831e29b | 1641 | return 0; |
c906108c SS |
1642 | #endif |
1643 | ||
1644 | } | |
1645 | ||
102b920e JG |
1646 | if (sis_verbose) |
1647 | printf ("Memory exception at %x (illegal address)\n", addr); | |
c906108c SS |
1648 | set_sfsr(UIMP_ACC, addr, asi, 1); |
1649 | *ws = MEM_EX_WS; | |
5831e29b | 1650 | return 1; |
c906108c SS |
1651 | } |
1652 | ||
1653 | int | |
1654 | memory_write(asi, addr, data, sz, ws) | |
1655 | int32 asi; | |
1656 | uint32 addr; | |
1657 | uint32 *data; | |
1658 | int32 sz; | |
1659 | int32 *ws; | |
1660 | { | |
1661 | uint32 byte_addr; | |
1662 | uint32 byte_mask; | |
1663 | uint32 waddr; | |
1664 | uint32 *ram; | |
1665 | int32 mexc; | |
1666 | int i; | |
1667 | int wphit[2]; | |
1668 | ||
1669 | #ifdef ERRINJ | |
1670 | if (errmec) { | |
1671 | if (sis_verbose) | |
1672 | printf("Inserted MEC error %d\n",errmec); | |
1673 | set_sfsr(errmec, addr, asi, 0); | |
1674 | if (errmec == 5) mecparerror(); | |
1675 | if (errmec == 6) iucomperr(); | |
1676 | errmec = 0; | |
5831e29b | 1677 | return 1; |
c906108c | 1678 | } |
d68c23cd | 1679 | #endif |
c906108c SS |
1680 | |
1681 | if ((addr >= mem_ramstart) && (addr < (mem_ramstart + mem_ramsz))) { | |
1682 | if (mem_accprot) { | |
1683 | ||
1684 | waddr = (addr & 0x7fffff) >> 2; | |
1685 | for (i = 0; i < 2; i++) | |
1686 | wphit[i] = | |
1687 | (((asi == 0xa) && (mec_wpr[i] & 1)) || | |
1688 | ((asi == 0xb) && (mec_wpr[i] & 2))) && | |
1689 | ((waddr >= mec_ssa[i]) && ((waddr | (sz == 3)) < mec_sea[i])); | |
1690 | ||
1691 | if (((mem_blockprot) && (wphit[0] || wphit[1])) || | |
1692 | ((!mem_blockprot) && | |
1693 | !((mec_wpr[0] && wphit[0]) || (mec_wpr[1] && wphit[1])) | |
1694 | )) { | |
1695 | if (sis_verbose) | |
1696 | printf("Memory access protection error at 0x%08x\n", addr); | |
1697 | set_sfsr(PROT_EXC, addr, asi, 0); | |
1698 | *ws = MEM_EX_WS; | |
5831e29b | 1699 | return 1; |
c906108c SS |
1700 | } |
1701 | } | |
d3e9b40a JG |
1702 | waddr = addr & mem_rammask; |
1703 | store_bytes (ramb, waddr, data, sz, ws); | |
5831e29b | 1704 | return 0; |
c906108c SS |
1705 | } else if ((addr >= MEC_START) && (addr < MEC_END)) { |
1706 | if ((sz != 2) || (asi != 0xb)) { | |
1707 | set_sfsr(MEC_ACC, addr, asi, 0); | |
1708 | *ws = MEM_EX_WS; | |
5831e29b | 1709 | return 1; |
c906108c SS |
1710 | } |
1711 | mexc = mec_write(addr, *data); | |
1712 | if (mexc) { | |
1713 | set_sfsr(MEC_ACC, addr, asi, 0); | |
1714 | *ws = MEM_EX_WS; | |
1715 | } else { | |
1716 | *ws = 0; | |
1717 | } | |
5831e29b | 1718 | return mexc; |
c906108c SS |
1719 | |
1720 | #ifdef ERA | |
1721 | ||
1722 | } else if (era) { | |
1723 | if ((erareg & 2) && | |
1724 | ((addr < 0x100000) || ((addr >= 0x80000000) && (addr < 0x80100000)))) { | |
1725 | addr &= ROM_MASK; | |
1726 | *ws = sz == 3 ? 8 : 4; | |
d3e9b40a | 1727 | store_bytes (romb, addr, data, sz, ws); |
5831e29b | 1728 | return 0; |
c906108c SS |
1729 | } else if ((addr >= 0x10000000) && |
1730 | (addr < (0x10000000 + (512 << (mec_iocr & 0x0f)))) && | |
1731 | (mec_iocr & 0x10)) { | |
1732 | erareg = *data & 0x0e; | |
5831e29b | 1733 | return 0; |
c906108c SS |
1734 | } |
1735 | ||
1736 | } else if ((addr < mem_romsz) && (mec_memcfg & 0x10000) && (wrp) && | |
1737 | (((mec_memcfg & 0x20000) && (sz > 1)) || | |
1738 | (!(mec_memcfg & 0x20000) && (sz == 0)))) { | |
1739 | ||
1740 | *ws = mem_romw_ws + 1; | |
1741 | if (sz == 3) | |
1742 | *ws += mem_romw_ws + STD_WS; | |
d3e9b40a | 1743 | store_bytes (romb, addr, data, sz, ws); |
5831e29b | 1744 | return 0; |
c906108c SS |
1745 | |
1746 | #else | |
1747 | } else if ((addr < mem_romsz) && (mec_memcfg & 0x10000) && (wrp) && | |
1748 | (((mec_memcfg & 0x20000) && (sz > 1)) || | |
1749 | (!(mec_memcfg & 0x20000) && (sz == 0)))) { | |
1750 | ||
1751 | *ws = mem_romw_ws + 1; | |
1752 | if (sz == 3) | |
1753 | *ws += mem_romw_ws + STD_WS; | |
d3e9b40a | 1754 | store_bytes (romb, addr, data, sz, ws); |
5831e29b | 1755 | return 0; |
c906108c SS |
1756 | |
1757 | #endif | |
1758 | ||
1759 | } | |
1760 | ||
1761 | *ws = MEM_EX_WS; | |
1762 | set_sfsr(UIMP_ACC, addr, asi, 0); | |
5831e29b | 1763 | return 1; |
c906108c SS |
1764 | } |
1765 | ||
1766 | static unsigned char * | |
1767 | get_mem_ptr(addr, size) | |
1768 | uint32 addr; | |
1769 | uint32 size; | |
1770 | { | |
1771 | if ((addr + size) < ROM_SZ) { | |
5831e29b | 1772 | return &romb[addr]; |
c906108c | 1773 | } else if ((addr >= mem_ramstart) && ((addr + size) < mem_ramend)) { |
5831e29b | 1774 | return &ramb[addr & mem_rammask]; |
c906108c SS |
1775 | } |
1776 | ||
1777 | #ifdef ERA | |
1778 | else if ((era) && ((addr <0x100000) || | |
1779 | ((addr >= (unsigned) 0x80000000) && ((addr + size) < (unsigned) 0x80100000)))) { | |
5831e29b | 1780 | return &romb[addr & ROM_MASK]; |
c906108c SS |
1781 | } |
1782 | #endif | |
1783 | ||
5831e29b | 1784 | return (char *) -1; |
c906108c SS |
1785 | } |
1786 | ||
1787 | int | |
1788 | sis_memory_write(addr, data, length) | |
94110024 JS |
1789 | uint32 addr; |
1790 | const unsigned char *data; | |
1791 | uint32 length; | |
c906108c SS |
1792 | { |
1793 | char *mem; | |
1794 | ||
1795 | if ((mem = get_mem_ptr(addr, length)) == ((char *) -1)) | |
5831e29b | 1796 | return 0; |
c906108c SS |
1797 | |
1798 | memcpy(mem, data, length); | |
5831e29b | 1799 | return length; |
c906108c SS |
1800 | } |
1801 | ||
1802 | int | |
1803 | sis_memory_read(addr, data, length) | |
1804 | uint32 addr; | |
1805 | char *data; | |
1806 | uint32 length; | |
1807 | { | |
1808 | char *mem; | |
1809 | ||
1810 | if ((mem = get_mem_ptr(addr, length)) == ((char *) -1)) | |
5831e29b | 1811 | return 0; |
c906108c SS |
1812 | |
1813 | memcpy(data, mem, length); | |
5831e29b | 1814 | return length; |
c906108c | 1815 | } |
20a0ffe3 JG |
1816 | |
1817 | extern struct pstate sregs; | |
1818 | ||
1819 | void | |
1820 | boot_init (void) | |
1821 | { | |
1822 | mec_write(MEC_WCR, 0); /* zero waitstates */ | |
1823 | mec_write(MEC_TRAPD, 0); /* turn off watch-dog */ | |
1824 | mec_write(MEC_RTC_SCALER, sregs.freq - 1); /* generate 1 MHz RTC tick */ | |
1825 | mec_write(MEC_MEMCFG, (3 << 18) | (4 << 10)); /* 1 MB ROM, 4 MB RAM */ | |
1826 | sregs.wim = 2; | |
1827 | sregs.psr = 0x110010e0; | |
1828 | sregs.r[30] = RAM_END; | |
1829 | sregs.r[14] = sregs.r[30] - 96 * 4; | |
1830 | mec_mcr |= 1; /* power-down enabled */ | |
1831 | } |