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Commit | Line | Data |
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9ee6e8bb | 1 | /* |
1654b2d6 | 2 | * Luminary Micro Stellaris peripherals |
9ee6e8bb PB |
3 | * |
4 | * Copyright (c) 2006 CodeSourcery. | |
5 | * Written by Paul Brook | |
6 | * | |
7 | * This code is licenced under the GPL. | |
8 | */ | |
9 | ||
a7d518a6 | 10 | #include "sysbus.h" |
5493e33f | 11 | #include "ssi.h" |
87ecb68b | 12 | #include "arm-misc.h" |
87ecb68b PB |
13 | #include "devices.h" |
14 | #include "qemu-timer.h" | |
15 | #include "i2c.h" | |
eea589cc | 16 | #include "net.h" |
87ecb68b | 17 | #include "boards.h" |
9ee6e8bb | 18 | |
cf0dbb21 PB |
19 | #define GPIO_A 0 |
20 | #define GPIO_B 1 | |
21 | #define GPIO_C 2 | |
22 | #define GPIO_D 3 | |
23 | #define GPIO_E 4 | |
24 | #define GPIO_F 5 | |
25 | #define GPIO_G 6 | |
26 | ||
27 | #define BP_OLED_I2C 0x01 | |
28 | #define BP_OLED_SSI 0x02 | |
29 | #define BP_GAMEPAD 0x04 | |
30 | ||
9ee6e8bb PB |
31 | typedef const struct { |
32 | const char *name; | |
33 | uint32_t did0; | |
34 | uint32_t did1; | |
35 | uint32_t dc0; | |
36 | uint32_t dc1; | |
37 | uint32_t dc2; | |
38 | uint32_t dc3; | |
39 | uint32_t dc4; | |
cf0dbb21 | 40 | uint32_t peripherals; |
9ee6e8bb PB |
41 | } stellaris_board_info; |
42 | ||
43 | /* General purpose timer module. */ | |
44 | ||
9ee6e8bb | 45 | typedef struct gptm_state { |
40905a6a | 46 | SysBusDevice busdev; |
9ee6e8bb PB |
47 | uint32_t config; |
48 | uint32_t mode[2]; | |
49 | uint32_t control; | |
50 | uint32_t state; | |
51 | uint32_t mask; | |
52 | uint32_t load[2]; | |
53 | uint32_t match[2]; | |
54 | uint32_t prescale[2]; | |
55 | uint32_t match_prescale[2]; | |
56 | uint32_t rtc; | |
57 | int64_t tick[2]; | |
58 | struct gptm_state *opaque[2]; | |
9ee6e8bb PB |
59 | QEMUTimer *timer[2]; |
60 | /* The timers have an alternate output used to trigger the ADC. */ | |
61 | qemu_irq trigger; | |
62 | qemu_irq irq; | |
63 | } gptm_state; | |
64 | ||
65 | static void gptm_update_irq(gptm_state *s) | |
66 | { | |
67 | int level; | |
68 | level = (s->state & s->mask) != 0; | |
69 | qemu_set_irq(s->irq, level); | |
70 | } | |
71 | ||
72 | static void gptm_stop(gptm_state *s, int n) | |
73 | { | |
74 | qemu_del_timer(s->timer[n]); | |
75 | } | |
76 | ||
77 | static void gptm_reload(gptm_state *s, int n, int reset) | |
78 | { | |
79 | int64_t tick; | |
80 | if (reset) | |
74475455 | 81 | tick = qemu_get_clock_ns(vm_clock); |
9ee6e8bb PB |
82 | else |
83 | tick = s->tick[n]; | |
84 | ||
85 | if (s->config == 0) { | |
86 | /* 32-bit CountDown. */ | |
87 | uint32_t count; | |
88 | count = s->load[0] | (s->load[1] << 16); | |
e57ec016 | 89 | tick += (int64_t)count * system_clock_scale; |
9ee6e8bb PB |
90 | } else if (s->config == 1) { |
91 | /* 32-bit RTC. 1Hz tick. */ | |
6ee093c9 | 92 | tick += get_ticks_per_sec(); |
9ee6e8bb PB |
93 | } else if (s->mode[n] == 0xa) { |
94 | /* PWM mode. Not implemented. */ | |
95 | } else { | |
2ac71179 | 96 | hw_error("TODO: 16-bit timer mode 0x%x\n", s->mode[n]); |
9ee6e8bb PB |
97 | } |
98 | s->tick[n] = tick; | |
99 | qemu_mod_timer(s->timer[n], tick); | |
100 | } | |
101 | ||
102 | static void gptm_tick(void *opaque) | |
103 | { | |
104 | gptm_state **p = (gptm_state **)opaque; | |
105 | gptm_state *s; | |
106 | int n; | |
107 | ||
108 | s = *p; | |
109 | n = p - s->opaque; | |
110 | if (s->config == 0) { | |
111 | s->state |= 1; | |
112 | if ((s->control & 0x20)) { | |
113 | /* Output trigger. */ | |
40905a6a | 114 | qemu_irq_pulse(s->trigger); |
9ee6e8bb PB |
115 | } |
116 | if (s->mode[0] & 1) { | |
117 | /* One-shot. */ | |
118 | s->control &= ~1; | |
119 | } else { | |
120 | /* Periodic. */ | |
121 | gptm_reload(s, 0, 0); | |
122 | } | |
123 | } else if (s->config == 1) { | |
124 | /* RTC. */ | |
125 | uint32_t match; | |
126 | s->rtc++; | |
127 | match = s->match[0] | (s->match[1] << 16); | |
128 | if (s->rtc > match) | |
129 | s->rtc = 0; | |
130 | if (s->rtc == 0) { | |
131 | s->state |= 8; | |
132 | } | |
133 | gptm_reload(s, 0, 0); | |
134 | } else if (s->mode[n] == 0xa) { | |
135 | /* PWM mode. Not implemented. */ | |
136 | } else { | |
2ac71179 | 137 | hw_error("TODO: 16-bit timer mode 0x%x\n", s->mode[n]); |
9ee6e8bb PB |
138 | } |
139 | gptm_update_irq(s); | |
140 | } | |
141 | ||
c227f099 | 142 | static uint32_t gptm_read(void *opaque, target_phys_addr_t offset) |
9ee6e8bb PB |
143 | { |
144 | gptm_state *s = (gptm_state *)opaque; | |
145 | ||
9ee6e8bb PB |
146 | switch (offset) { |
147 | case 0x00: /* CFG */ | |
148 | return s->config; | |
149 | case 0x04: /* TAMR */ | |
150 | return s->mode[0]; | |
151 | case 0x08: /* TBMR */ | |
152 | return s->mode[1]; | |
153 | case 0x0c: /* CTL */ | |
154 | return s->control; | |
155 | case 0x18: /* IMR */ | |
156 | return s->mask; | |
157 | case 0x1c: /* RIS */ | |
158 | return s->state; | |
159 | case 0x20: /* MIS */ | |
160 | return s->state & s->mask; | |
161 | case 0x24: /* CR */ | |
162 | return 0; | |
163 | case 0x28: /* TAILR */ | |
164 | return s->load[0] | ((s->config < 4) ? (s->load[1] << 16) : 0); | |
165 | case 0x2c: /* TBILR */ | |
166 | return s->load[1]; | |
167 | case 0x30: /* TAMARCHR */ | |
168 | return s->match[0] | ((s->config < 4) ? (s->match[1] << 16) : 0); | |
169 | case 0x34: /* TBMATCHR */ | |
170 | return s->match[1]; | |
171 | case 0x38: /* TAPR */ | |
172 | return s->prescale[0]; | |
173 | case 0x3c: /* TBPR */ | |
174 | return s->prescale[1]; | |
175 | case 0x40: /* TAPMR */ | |
176 | return s->match_prescale[0]; | |
177 | case 0x44: /* TBPMR */ | |
178 | return s->match_prescale[1]; | |
179 | case 0x48: /* TAR */ | |
180 | if (s->control == 1) | |
181 | return s->rtc; | |
182 | case 0x4c: /* TBR */ | |
2ac71179 | 183 | hw_error("TODO: Timer value read\n"); |
9ee6e8bb | 184 | default: |
2ac71179 | 185 | hw_error("gptm_read: Bad offset 0x%x\n", (int)offset); |
9ee6e8bb PB |
186 | return 0; |
187 | } | |
188 | } | |
189 | ||
c227f099 | 190 | static void gptm_write(void *opaque, target_phys_addr_t offset, uint32_t value) |
9ee6e8bb PB |
191 | { |
192 | gptm_state *s = (gptm_state *)opaque; | |
193 | uint32_t oldval; | |
194 | ||
9ee6e8bb PB |
195 | /* The timers should be disabled before changing the configuration. |
196 | We take advantage of this and defer everything until the timer | |
197 | is enabled. */ | |
198 | switch (offset) { | |
199 | case 0x00: /* CFG */ | |
200 | s->config = value; | |
201 | break; | |
202 | case 0x04: /* TAMR */ | |
203 | s->mode[0] = value; | |
204 | break; | |
205 | case 0x08: /* TBMR */ | |
206 | s->mode[1] = value; | |
207 | break; | |
208 | case 0x0c: /* CTL */ | |
209 | oldval = s->control; | |
210 | s->control = value; | |
211 | /* TODO: Implement pause. */ | |
212 | if ((oldval ^ value) & 1) { | |
213 | if (value & 1) { | |
214 | gptm_reload(s, 0, 1); | |
215 | } else { | |
216 | gptm_stop(s, 0); | |
217 | } | |
218 | } | |
219 | if (((oldval ^ value) & 0x100) && s->config >= 4) { | |
220 | if (value & 0x100) { | |
221 | gptm_reload(s, 1, 1); | |
222 | } else { | |
223 | gptm_stop(s, 1); | |
224 | } | |
225 | } | |
226 | break; | |
227 | case 0x18: /* IMR */ | |
228 | s->mask = value & 0x77; | |
229 | gptm_update_irq(s); | |
230 | break; | |
231 | case 0x24: /* CR */ | |
232 | s->state &= ~value; | |
233 | break; | |
234 | case 0x28: /* TAILR */ | |
235 | s->load[0] = value & 0xffff; | |
236 | if (s->config < 4) { | |
237 | s->load[1] = value >> 16; | |
238 | } | |
239 | break; | |
240 | case 0x2c: /* TBILR */ | |
241 | s->load[1] = value & 0xffff; | |
242 | break; | |
243 | case 0x30: /* TAMARCHR */ | |
244 | s->match[0] = value & 0xffff; | |
245 | if (s->config < 4) { | |
246 | s->match[1] = value >> 16; | |
247 | } | |
248 | break; | |
249 | case 0x34: /* TBMATCHR */ | |
250 | s->match[1] = value >> 16; | |
251 | break; | |
252 | case 0x38: /* TAPR */ | |
253 | s->prescale[0] = value; | |
254 | break; | |
255 | case 0x3c: /* TBPR */ | |
256 | s->prescale[1] = value; | |
257 | break; | |
258 | case 0x40: /* TAPMR */ | |
259 | s->match_prescale[0] = value; | |
260 | break; | |
261 | case 0x44: /* TBPMR */ | |
262 | s->match_prescale[0] = value; | |
263 | break; | |
264 | default: | |
2ac71179 | 265 | hw_error("gptm_write: Bad offset 0x%x\n", (int)offset); |
9ee6e8bb PB |
266 | } |
267 | gptm_update_irq(s); | |
268 | } | |
269 | ||
d60efc6b | 270 | static CPUReadMemoryFunc * const gptm_readfn[] = { |
9ee6e8bb PB |
271 | gptm_read, |
272 | gptm_read, | |
273 | gptm_read | |
274 | }; | |
275 | ||
d60efc6b | 276 | static CPUWriteMemoryFunc * const gptm_writefn[] = { |
9ee6e8bb PB |
277 | gptm_write, |
278 | gptm_write, | |
279 | gptm_write | |
280 | }; | |
281 | ||
23e39294 PB |
282 | static void gptm_save(QEMUFile *f, void *opaque) |
283 | { | |
284 | gptm_state *s = (gptm_state *)opaque; | |
285 | ||
286 | qemu_put_be32(f, s->config); | |
287 | qemu_put_be32(f, s->mode[0]); | |
288 | qemu_put_be32(f, s->mode[1]); | |
289 | qemu_put_be32(f, s->control); | |
290 | qemu_put_be32(f, s->state); | |
291 | qemu_put_be32(f, s->mask); | |
292 | qemu_put_be32(f, s->mode[0]); | |
293 | qemu_put_be32(f, s->mode[0]); | |
294 | qemu_put_be32(f, s->load[0]); | |
295 | qemu_put_be32(f, s->load[1]); | |
296 | qemu_put_be32(f, s->match[0]); | |
297 | qemu_put_be32(f, s->match[1]); | |
298 | qemu_put_be32(f, s->prescale[0]); | |
299 | qemu_put_be32(f, s->prescale[1]); | |
300 | qemu_put_be32(f, s->match_prescale[0]); | |
301 | qemu_put_be32(f, s->match_prescale[1]); | |
302 | qemu_put_be32(f, s->rtc); | |
303 | qemu_put_be64(f, s->tick[0]); | |
304 | qemu_put_be64(f, s->tick[1]); | |
305 | qemu_put_timer(f, s->timer[0]); | |
306 | qemu_put_timer(f, s->timer[1]); | |
307 | } | |
308 | ||
309 | static int gptm_load(QEMUFile *f, void *opaque, int version_id) | |
310 | { | |
311 | gptm_state *s = (gptm_state *)opaque; | |
312 | ||
313 | if (version_id != 1) | |
314 | return -EINVAL; | |
315 | ||
316 | s->config = qemu_get_be32(f); | |
317 | s->mode[0] = qemu_get_be32(f); | |
318 | s->mode[1] = qemu_get_be32(f); | |
319 | s->control = qemu_get_be32(f); | |
320 | s->state = qemu_get_be32(f); | |
321 | s->mask = qemu_get_be32(f); | |
322 | s->mode[0] = qemu_get_be32(f); | |
323 | s->mode[0] = qemu_get_be32(f); | |
324 | s->load[0] = qemu_get_be32(f); | |
325 | s->load[1] = qemu_get_be32(f); | |
326 | s->match[0] = qemu_get_be32(f); | |
327 | s->match[1] = qemu_get_be32(f); | |
328 | s->prescale[0] = qemu_get_be32(f); | |
329 | s->prescale[1] = qemu_get_be32(f); | |
330 | s->match_prescale[0] = qemu_get_be32(f); | |
331 | s->match_prescale[1] = qemu_get_be32(f); | |
332 | s->rtc = qemu_get_be32(f); | |
333 | s->tick[0] = qemu_get_be64(f); | |
334 | s->tick[1] = qemu_get_be64(f); | |
335 | qemu_get_timer(f, s->timer[0]); | |
336 | qemu_get_timer(f, s->timer[1]); | |
337 | ||
338 | return 0; | |
339 | } | |
340 | ||
81a322d4 | 341 | static int stellaris_gptm_init(SysBusDevice *dev) |
9ee6e8bb PB |
342 | { |
343 | int iomemtype; | |
40905a6a | 344 | gptm_state *s = FROM_SYSBUS(gptm_state, dev); |
9ee6e8bb | 345 | |
40905a6a PB |
346 | sysbus_init_irq(dev, &s->irq); |
347 | qdev_init_gpio_out(&dev->qdev, &s->trigger, 1); | |
9ee6e8bb | 348 | |
1eed09cb | 349 | iomemtype = cpu_register_io_memory(gptm_readfn, |
2507c12a AG |
350 | gptm_writefn, s, |
351 | DEVICE_NATIVE_ENDIAN); | |
40905a6a PB |
352 | sysbus_init_mmio(dev, 0x1000, iomemtype); |
353 | ||
354 | s->opaque[0] = s->opaque[1] = s; | |
74475455 PB |
355 | s->timer[0] = qemu_new_timer_ns(vm_clock, gptm_tick, &s->opaque[0]); |
356 | s->timer[1] = qemu_new_timer_ns(vm_clock, gptm_tick, &s->opaque[1]); | |
0be71e32 AW |
357 | register_savevm(&dev->qdev, "stellaris_gptm", -1, 1, |
358 | gptm_save, gptm_load, s); | |
81a322d4 | 359 | return 0; |
9ee6e8bb PB |
360 | } |
361 | ||
362 | ||
363 | /* System controller. */ | |
364 | ||
365 | typedef struct { | |
9ee6e8bb PB |
366 | uint32_t pborctl; |
367 | uint32_t ldopctl; | |
368 | uint32_t int_status; | |
369 | uint32_t int_mask; | |
370 | uint32_t resc; | |
371 | uint32_t rcc; | |
372 | uint32_t rcgc[3]; | |
373 | uint32_t scgc[3]; | |
374 | uint32_t dcgc[3]; | |
375 | uint32_t clkvclr; | |
376 | uint32_t ldoarst; | |
eea589cc PB |
377 | uint32_t user0; |
378 | uint32_t user1; | |
9ee6e8bb PB |
379 | qemu_irq irq; |
380 | stellaris_board_info *board; | |
381 | } ssys_state; | |
382 | ||
383 | static void ssys_update(ssys_state *s) | |
384 | { | |
385 | qemu_set_irq(s->irq, (s->int_status & s->int_mask) != 0); | |
386 | } | |
387 | ||
388 | static uint32_t pllcfg_sandstorm[16] = { | |
389 | 0x31c0, /* 1 Mhz */ | |
390 | 0x1ae0, /* 1.8432 Mhz */ | |
391 | 0x18c0, /* 2 Mhz */ | |
392 | 0xd573, /* 2.4576 Mhz */ | |
393 | 0x37a6, /* 3.57954 Mhz */ | |
394 | 0x1ae2, /* 3.6864 Mhz */ | |
395 | 0x0c40, /* 4 Mhz */ | |
396 | 0x98bc, /* 4.906 Mhz */ | |
397 | 0x935b, /* 4.9152 Mhz */ | |
398 | 0x09c0, /* 5 Mhz */ | |
399 | 0x4dee, /* 5.12 Mhz */ | |
400 | 0x0c41, /* 6 Mhz */ | |
401 | 0x75db, /* 6.144 Mhz */ | |
402 | 0x1ae6, /* 7.3728 Mhz */ | |
403 | 0x0600, /* 8 Mhz */ | |
404 | 0x585b /* 8.192 Mhz */ | |
405 | }; | |
406 | ||
407 | static uint32_t pllcfg_fury[16] = { | |
408 | 0x3200, /* 1 Mhz */ | |
409 | 0x1b20, /* 1.8432 Mhz */ | |
410 | 0x1900, /* 2 Mhz */ | |
411 | 0xf42b, /* 2.4576 Mhz */ | |
412 | 0x37e3, /* 3.57954 Mhz */ | |
413 | 0x1b21, /* 3.6864 Mhz */ | |
414 | 0x0c80, /* 4 Mhz */ | |
415 | 0x98ee, /* 4.906 Mhz */ | |
416 | 0xd5b4, /* 4.9152 Mhz */ | |
417 | 0x0a00, /* 5 Mhz */ | |
418 | 0x4e27, /* 5.12 Mhz */ | |
419 | 0x1902, /* 6 Mhz */ | |
420 | 0xec1c, /* 6.144 Mhz */ | |
421 | 0x1b23, /* 7.3728 Mhz */ | |
422 | 0x0640, /* 8 Mhz */ | |
423 | 0xb11c /* 8.192 Mhz */ | |
424 | }; | |
425 | ||
c227f099 | 426 | static uint32_t ssys_read(void *opaque, target_phys_addr_t offset) |
9ee6e8bb PB |
427 | { |
428 | ssys_state *s = (ssys_state *)opaque; | |
429 | ||
9ee6e8bb PB |
430 | switch (offset) { |
431 | case 0x000: /* DID0 */ | |
432 | return s->board->did0; | |
433 | case 0x004: /* DID1 */ | |
434 | return s->board->did1; | |
435 | case 0x008: /* DC0 */ | |
436 | return s->board->dc0; | |
437 | case 0x010: /* DC1 */ | |
438 | return s->board->dc1; | |
439 | case 0x014: /* DC2 */ | |
440 | return s->board->dc2; | |
441 | case 0x018: /* DC3 */ | |
442 | return s->board->dc3; | |
443 | case 0x01c: /* DC4 */ | |
444 | return s->board->dc4; | |
445 | case 0x030: /* PBORCTL */ | |
446 | return s->pborctl; | |
447 | case 0x034: /* LDOPCTL */ | |
448 | return s->ldopctl; | |
449 | case 0x040: /* SRCR0 */ | |
450 | return 0; | |
451 | case 0x044: /* SRCR1 */ | |
452 | return 0; | |
453 | case 0x048: /* SRCR2 */ | |
454 | return 0; | |
455 | case 0x050: /* RIS */ | |
456 | return s->int_status; | |
457 | case 0x054: /* IMC */ | |
458 | return s->int_mask; | |
459 | case 0x058: /* MISC */ | |
460 | return s->int_status & s->int_mask; | |
461 | case 0x05c: /* RESC */ | |
462 | return s->resc; | |
463 | case 0x060: /* RCC */ | |
464 | return s->rcc; | |
465 | case 0x064: /* PLLCFG */ | |
466 | { | |
467 | int xtal; | |
468 | xtal = (s->rcc >> 6) & 0xf; | |
469 | if (s->board->did0 & (1 << 16)) { | |
470 | return pllcfg_fury[xtal]; | |
471 | } else { | |
472 | return pllcfg_sandstorm[xtal]; | |
473 | } | |
474 | } | |
475 | case 0x100: /* RCGC0 */ | |
476 | return s->rcgc[0]; | |
477 | case 0x104: /* RCGC1 */ | |
478 | return s->rcgc[1]; | |
479 | case 0x108: /* RCGC2 */ | |
480 | return s->rcgc[2]; | |
481 | case 0x110: /* SCGC0 */ | |
482 | return s->scgc[0]; | |
483 | case 0x114: /* SCGC1 */ | |
484 | return s->scgc[1]; | |
485 | case 0x118: /* SCGC2 */ | |
486 | return s->scgc[2]; | |
487 | case 0x120: /* DCGC0 */ | |
488 | return s->dcgc[0]; | |
489 | case 0x124: /* DCGC1 */ | |
490 | return s->dcgc[1]; | |
491 | case 0x128: /* DCGC2 */ | |
492 | return s->dcgc[2]; | |
493 | case 0x150: /* CLKVCLR */ | |
494 | return s->clkvclr; | |
495 | case 0x160: /* LDOARST */ | |
496 | return s->ldoarst; | |
eea589cc PB |
497 | case 0x1e0: /* USER0 */ |
498 | return s->user0; | |
499 | case 0x1e4: /* USER1 */ | |
500 | return s->user1; | |
9ee6e8bb | 501 | default: |
2ac71179 | 502 | hw_error("ssys_read: Bad offset 0x%x\n", (int)offset); |
9ee6e8bb PB |
503 | return 0; |
504 | } | |
505 | } | |
506 | ||
23e39294 PB |
507 | static void ssys_calculate_system_clock(ssys_state *s) |
508 | { | |
509 | system_clock_scale = 5 * (((s->rcc >> 23) & 0xf) + 1); | |
510 | } | |
511 | ||
c227f099 | 512 | static void ssys_write(void *opaque, target_phys_addr_t offset, uint32_t value) |
9ee6e8bb PB |
513 | { |
514 | ssys_state *s = (ssys_state *)opaque; | |
515 | ||
9ee6e8bb PB |
516 | switch (offset) { |
517 | case 0x030: /* PBORCTL */ | |
518 | s->pborctl = value & 0xffff; | |
519 | break; | |
520 | case 0x034: /* LDOPCTL */ | |
521 | s->ldopctl = value & 0x1f; | |
522 | break; | |
523 | case 0x040: /* SRCR0 */ | |
524 | case 0x044: /* SRCR1 */ | |
525 | case 0x048: /* SRCR2 */ | |
526 | fprintf(stderr, "Peripheral reset not implemented\n"); | |
527 | break; | |
528 | case 0x054: /* IMC */ | |
529 | s->int_mask = value & 0x7f; | |
530 | break; | |
531 | case 0x058: /* MISC */ | |
532 | s->int_status &= ~value; | |
533 | break; | |
534 | case 0x05c: /* RESC */ | |
535 | s->resc = value & 0x3f; | |
536 | break; | |
537 | case 0x060: /* RCC */ | |
538 | if ((s->rcc & (1 << 13)) != 0 && (value & (1 << 13)) == 0) { | |
539 | /* PLL enable. */ | |
540 | s->int_status |= (1 << 6); | |
541 | } | |
542 | s->rcc = value; | |
23e39294 | 543 | ssys_calculate_system_clock(s); |
9ee6e8bb PB |
544 | break; |
545 | case 0x100: /* RCGC0 */ | |
546 | s->rcgc[0] = value; | |
547 | break; | |
548 | case 0x104: /* RCGC1 */ | |
549 | s->rcgc[1] = value; | |
550 | break; | |
551 | case 0x108: /* RCGC2 */ | |
552 | s->rcgc[2] = value; | |
553 | break; | |
554 | case 0x110: /* SCGC0 */ | |
555 | s->scgc[0] = value; | |
556 | break; | |
557 | case 0x114: /* SCGC1 */ | |
558 | s->scgc[1] = value; | |
559 | break; | |
560 | case 0x118: /* SCGC2 */ | |
561 | s->scgc[2] = value; | |
562 | break; | |
563 | case 0x120: /* DCGC0 */ | |
564 | s->dcgc[0] = value; | |
565 | break; | |
566 | case 0x124: /* DCGC1 */ | |
567 | s->dcgc[1] = value; | |
568 | break; | |
569 | case 0x128: /* DCGC2 */ | |
570 | s->dcgc[2] = value; | |
571 | break; | |
572 | case 0x150: /* CLKVCLR */ | |
573 | s->clkvclr = value; | |
574 | break; | |
575 | case 0x160: /* LDOARST */ | |
576 | s->ldoarst = value; | |
577 | break; | |
578 | default: | |
2ac71179 | 579 | hw_error("ssys_write: Bad offset 0x%x\n", (int)offset); |
9ee6e8bb PB |
580 | } |
581 | ssys_update(s); | |
582 | } | |
583 | ||
d60efc6b | 584 | static CPUReadMemoryFunc * const ssys_readfn[] = { |
9ee6e8bb PB |
585 | ssys_read, |
586 | ssys_read, | |
587 | ssys_read | |
588 | }; | |
589 | ||
d60efc6b | 590 | static CPUWriteMemoryFunc * const ssys_writefn[] = { |
9ee6e8bb PB |
591 | ssys_write, |
592 | ssys_write, | |
593 | ssys_write | |
594 | }; | |
595 | ||
9596ebb7 | 596 | static void ssys_reset(void *opaque) |
9ee6e8bb PB |
597 | { |
598 | ssys_state *s = (ssys_state *)opaque; | |
599 | ||
600 | s->pborctl = 0x7ffd; | |
601 | s->rcc = 0x078e3ac0; | |
602 | s->rcgc[0] = 1; | |
603 | s->scgc[0] = 1; | |
604 | s->dcgc[0] = 1; | |
605 | } | |
606 | ||
293c16aa | 607 | static int stellaris_sys_post_load(void *opaque, int version_id) |
23e39294 | 608 | { |
293c16aa | 609 | ssys_state *s = opaque; |
23e39294 | 610 | |
23e39294 PB |
611 | ssys_calculate_system_clock(s); |
612 | ||
613 | return 0; | |
614 | } | |
615 | ||
293c16aa JQ |
616 | static const VMStateDescription vmstate_stellaris_sys = { |
617 | .name = "stellaris_sys", | |
618 | .version_id = 1, | |
619 | .minimum_version_id = 1, | |
620 | .minimum_version_id_old = 1, | |
621 | .post_load = stellaris_sys_post_load, | |
622 | .fields = (VMStateField[]) { | |
623 | VMSTATE_UINT32(pborctl, ssys_state), | |
624 | VMSTATE_UINT32(ldopctl, ssys_state), | |
625 | VMSTATE_UINT32(int_mask, ssys_state), | |
626 | VMSTATE_UINT32(int_status, ssys_state), | |
627 | VMSTATE_UINT32(resc, ssys_state), | |
628 | VMSTATE_UINT32(rcc, ssys_state), | |
629 | VMSTATE_UINT32_ARRAY(rcgc, ssys_state, 3), | |
630 | VMSTATE_UINT32_ARRAY(scgc, ssys_state, 3), | |
631 | VMSTATE_UINT32_ARRAY(dcgc, ssys_state, 3), | |
632 | VMSTATE_UINT32(clkvclr, ssys_state), | |
633 | VMSTATE_UINT32(ldoarst, ssys_state), | |
634 | VMSTATE_END_OF_LIST() | |
635 | } | |
636 | }; | |
637 | ||
81a322d4 GH |
638 | static int stellaris_sys_init(uint32_t base, qemu_irq irq, |
639 | stellaris_board_info * board, | |
640 | uint8_t *macaddr) | |
9ee6e8bb PB |
641 | { |
642 | int iomemtype; | |
643 | ssys_state *s; | |
644 | ||
645 | s = (ssys_state *)qemu_mallocz(sizeof(ssys_state)); | |
9ee6e8bb PB |
646 | s->irq = irq; |
647 | s->board = board; | |
eea589cc PB |
648 | /* Most devices come preprogrammed with a MAC address in the user data. */ |
649 | s->user0 = macaddr[0] | (macaddr[1] << 8) | (macaddr[2] << 16); | |
650 | s->user1 = macaddr[3] | (macaddr[4] << 8) | (macaddr[5] << 16); | |
9ee6e8bb | 651 | |
1eed09cb | 652 | iomemtype = cpu_register_io_memory(ssys_readfn, |
2507c12a AG |
653 | ssys_writefn, s, |
654 | DEVICE_NATIVE_ENDIAN); | |
9ee6e8bb PB |
655 | cpu_register_physical_memory(base, 0x00001000, iomemtype); |
656 | ssys_reset(s); | |
293c16aa | 657 | vmstate_register(NULL, -1, &vmstate_stellaris_sys, s); |
81a322d4 | 658 | return 0; |
9ee6e8bb PB |
659 | } |
660 | ||
661 | ||
662 | /* I2C controller. */ | |
663 | ||
664 | typedef struct { | |
1de9610c | 665 | SysBusDevice busdev; |
9ee6e8bb PB |
666 | i2c_bus *bus; |
667 | qemu_irq irq; | |
9ee6e8bb PB |
668 | uint32_t msa; |
669 | uint32_t mcs; | |
670 | uint32_t mdr; | |
671 | uint32_t mtpr; | |
672 | uint32_t mimr; | |
673 | uint32_t mris; | |
674 | uint32_t mcr; | |
675 | } stellaris_i2c_state; | |
676 | ||
677 | #define STELLARIS_I2C_MCS_BUSY 0x01 | |
678 | #define STELLARIS_I2C_MCS_ERROR 0x02 | |
679 | #define STELLARIS_I2C_MCS_ADRACK 0x04 | |
680 | #define STELLARIS_I2C_MCS_DATACK 0x08 | |
681 | #define STELLARIS_I2C_MCS_ARBLST 0x10 | |
682 | #define STELLARIS_I2C_MCS_IDLE 0x20 | |
683 | #define STELLARIS_I2C_MCS_BUSBSY 0x40 | |
684 | ||
c227f099 | 685 | static uint32_t stellaris_i2c_read(void *opaque, target_phys_addr_t offset) |
9ee6e8bb PB |
686 | { |
687 | stellaris_i2c_state *s = (stellaris_i2c_state *)opaque; | |
688 | ||
9ee6e8bb PB |
689 | switch (offset) { |
690 | case 0x00: /* MSA */ | |
691 | return s->msa; | |
692 | case 0x04: /* MCS */ | |
693 | /* We don't emulate timing, so the controller is never busy. */ | |
694 | return s->mcs | STELLARIS_I2C_MCS_IDLE; | |
695 | case 0x08: /* MDR */ | |
696 | return s->mdr; | |
697 | case 0x0c: /* MTPR */ | |
698 | return s->mtpr; | |
699 | case 0x10: /* MIMR */ | |
700 | return s->mimr; | |
701 | case 0x14: /* MRIS */ | |
702 | return s->mris; | |
703 | case 0x18: /* MMIS */ | |
704 | return s->mris & s->mimr; | |
705 | case 0x20: /* MCR */ | |
706 | return s->mcr; | |
707 | default: | |
2ac71179 | 708 | hw_error("strllaris_i2c_read: Bad offset 0x%x\n", (int)offset); |
9ee6e8bb PB |
709 | return 0; |
710 | } | |
711 | } | |
712 | ||
713 | static void stellaris_i2c_update(stellaris_i2c_state *s) | |
714 | { | |
715 | int level; | |
716 | ||
717 | level = (s->mris & s->mimr) != 0; | |
718 | qemu_set_irq(s->irq, level); | |
719 | } | |
720 | ||
c227f099 | 721 | static void stellaris_i2c_write(void *opaque, target_phys_addr_t offset, |
9ee6e8bb PB |
722 | uint32_t value) |
723 | { | |
724 | stellaris_i2c_state *s = (stellaris_i2c_state *)opaque; | |
725 | ||
9ee6e8bb PB |
726 | switch (offset) { |
727 | case 0x00: /* MSA */ | |
728 | s->msa = value & 0xff; | |
729 | break; | |
730 | case 0x04: /* MCS */ | |
731 | if ((s->mcr & 0x10) == 0) { | |
732 | /* Disabled. Do nothing. */ | |
733 | break; | |
734 | } | |
735 | /* Grab the bus if this is starting a transfer. */ | |
736 | if ((value & 2) && (s->mcs & STELLARIS_I2C_MCS_BUSBSY) == 0) { | |
737 | if (i2c_start_transfer(s->bus, s->msa >> 1, s->msa & 1)) { | |
738 | s->mcs |= STELLARIS_I2C_MCS_ARBLST; | |
739 | } else { | |
740 | s->mcs &= ~STELLARIS_I2C_MCS_ARBLST; | |
741 | s->mcs |= STELLARIS_I2C_MCS_BUSBSY; | |
742 | } | |
743 | } | |
744 | /* If we don't have the bus then indicate an error. */ | |
745 | if (!i2c_bus_busy(s->bus) | |
746 | || (s->mcs & STELLARIS_I2C_MCS_BUSBSY) == 0) { | |
747 | s->mcs |= STELLARIS_I2C_MCS_ERROR; | |
748 | break; | |
749 | } | |
750 | s->mcs &= ~STELLARIS_I2C_MCS_ERROR; | |
751 | if (value & 1) { | |
752 | /* Transfer a byte. */ | |
753 | /* TODO: Handle errors. */ | |
754 | if (s->msa & 1) { | |
755 | /* Recv */ | |
756 | s->mdr = i2c_recv(s->bus) & 0xff; | |
757 | } else { | |
758 | /* Send */ | |
759 | i2c_send(s->bus, s->mdr); | |
760 | } | |
761 | /* Raise an interrupt. */ | |
762 | s->mris |= 1; | |
763 | } | |
764 | if (value & 4) { | |
765 | /* Finish transfer. */ | |
766 | i2c_end_transfer(s->bus); | |
767 | s->mcs &= ~STELLARIS_I2C_MCS_BUSBSY; | |
768 | } | |
769 | break; | |
770 | case 0x08: /* MDR */ | |
771 | s->mdr = value & 0xff; | |
772 | break; | |
773 | case 0x0c: /* MTPR */ | |
774 | s->mtpr = value & 0xff; | |
775 | break; | |
776 | case 0x10: /* MIMR */ | |
777 | s->mimr = 1; | |
778 | break; | |
779 | case 0x1c: /* MICR */ | |
780 | s->mris &= ~value; | |
781 | break; | |
782 | case 0x20: /* MCR */ | |
783 | if (value & 1) | |
2ac71179 | 784 | hw_error( |
9ee6e8bb PB |
785 | "stellaris_i2c_write: Loopback not implemented\n"); |
786 | if (value & 0x20) | |
2ac71179 | 787 | hw_error( |
9ee6e8bb PB |
788 | "stellaris_i2c_write: Slave mode not implemented\n"); |
789 | s->mcr = value & 0x31; | |
790 | break; | |
791 | default: | |
2ac71179 | 792 | hw_error("stellaris_i2c_write: Bad offset 0x%x\n", |
9ee6e8bb PB |
793 | (int)offset); |
794 | } | |
795 | stellaris_i2c_update(s); | |
796 | } | |
797 | ||
798 | static void stellaris_i2c_reset(stellaris_i2c_state *s) | |
799 | { | |
800 | if (s->mcs & STELLARIS_I2C_MCS_BUSBSY) | |
801 | i2c_end_transfer(s->bus); | |
802 | ||
803 | s->msa = 0; | |
804 | s->mcs = 0; | |
805 | s->mdr = 0; | |
806 | s->mtpr = 1; | |
807 | s->mimr = 0; | |
808 | s->mris = 0; | |
809 | s->mcr = 0; | |
810 | stellaris_i2c_update(s); | |
811 | } | |
812 | ||
d60efc6b | 813 | static CPUReadMemoryFunc * const stellaris_i2c_readfn[] = { |
9ee6e8bb PB |
814 | stellaris_i2c_read, |
815 | stellaris_i2c_read, | |
816 | stellaris_i2c_read | |
817 | }; | |
818 | ||
d60efc6b | 819 | static CPUWriteMemoryFunc * const stellaris_i2c_writefn[] = { |
9ee6e8bb PB |
820 | stellaris_i2c_write, |
821 | stellaris_i2c_write, | |
822 | stellaris_i2c_write | |
823 | }; | |
824 | ||
ff269cd0 JQ |
825 | static const VMStateDescription vmstate_stellaris_i2c = { |
826 | .name = "stellaris_i2c", | |
827 | .version_id = 1, | |
828 | .minimum_version_id = 1, | |
829 | .minimum_version_id_old = 1, | |
830 | .fields = (VMStateField[]) { | |
831 | VMSTATE_UINT32(msa, stellaris_i2c_state), | |
832 | VMSTATE_UINT32(mcs, stellaris_i2c_state), | |
833 | VMSTATE_UINT32(mdr, stellaris_i2c_state), | |
834 | VMSTATE_UINT32(mtpr, stellaris_i2c_state), | |
835 | VMSTATE_UINT32(mimr, stellaris_i2c_state), | |
836 | VMSTATE_UINT32(mris, stellaris_i2c_state), | |
837 | VMSTATE_UINT32(mcr, stellaris_i2c_state), | |
838 | VMSTATE_END_OF_LIST() | |
839 | } | |
840 | }; | |
23e39294 | 841 | |
81a322d4 | 842 | static int stellaris_i2c_init(SysBusDevice * dev) |
9ee6e8bb | 843 | { |
1de9610c | 844 | stellaris_i2c_state *s = FROM_SYSBUS(stellaris_i2c_state, dev); |
02e2da45 | 845 | i2c_bus *bus; |
9ee6e8bb PB |
846 | int iomemtype; |
847 | ||
1de9610c | 848 | sysbus_init_irq(dev, &s->irq); |
02e2da45 | 849 | bus = i2c_init_bus(&dev->qdev, "i2c"); |
9ee6e8bb PB |
850 | s->bus = bus; |
851 | ||
1eed09cb | 852 | iomemtype = cpu_register_io_memory(stellaris_i2c_readfn, |
2507c12a AG |
853 | stellaris_i2c_writefn, s, |
854 | DEVICE_NATIVE_ENDIAN); | |
1de9610c | 855 | sysbus_init_mmio(dev, 0x1000, iomemtype); |
9ee6e8bb PB |
856 | /* ??? For now we only implement the master interface. */ |
857 | stellaris_i2c_reset(s); | |
ff269cd0 | 858 | vmstate_register(&dev->qdev, -1, &vmstate_stellaris_i2c, s); |
81a322d4 | 859 | return 0; |
9ee6e8bb PB |
860 | } |
861 | ||
862 | /* Analogue to Digital Converter. This is only partially implemented, | |
863 | enough for applications that use a combined ADC and timer tick. */ | |
864 | ||
865 | #define STELLARIS_ADC_EM_CONTROLLER 0 | |
866 | #define STELLARIS_ADC_EM_COMP 1 | |
867 | #define STELLARIS_ADC_EM_EXTERNAL 4 | |
868 | #define STELLARIS_ADC_EM_TIMER 5 | |
869 | #define STELLARIS_ADC_EM_PWM0 6 | |
870 | #define STELLARIS_ADC_EM_PWM1 7 | |
871 | #define STELLARIS_ADC_EM_PWM2 8 | |
872 | ||
873 | #define STELLARIS_ADC_FIFO_EMPTY 0x0100 | |
874 | #define STELLARIS_ADC_FIFO_FULL 0x1000 | |
875 | ||
876 | typedef struct | |
877 | { | |
40905a6a | 878 | SysBusDevice busdev; |
9ee6e8bb PB |
879 | uint32_t actss; |
880 | uint32_t ris; | |
881 | uint32_t im; | |
882 | uint32_t emux; | |
883 | uint32_t ostat; | |
884 | uint32_t ustat; | |
885 | uint32_t sspri; | |
886 | uint32_t sac; | |
887 | struct { | |
888 | uint32_t state; | |
889 | uint32_t data[16]; | |
890 | } fifo[4]; | |
891 | uint32_t ssmux[4]; | |
892 | uint32_t ssctl[4]; | |
23e39294 | 893 | uint32_t noise; |
2c6554bc | 894 | qemu_irq irq[4]; |
9ee6e8bb PB |
895 | } stellaris_adc_state; |
896 | ||
897 | static uint32_t stellaris_adc_fifo_read(stellaris_adc_state *s, int n) | |
898 | { | |
899 | int tail; | |
900 | ||
901 | tail = s->fifo[n].state & 0xf; | |
902 | if (s->fifo[n].state & STELLARIS_ADC_FIFO_EMPTY) { | |
903 | s->ustat |= 1 << n; | |
904 | } else { | |
905 | s->fifo[n].state = (s->fifo[n].state & ~0xf) | ((tail + 1) & 0xf); | |
906 | s->fifo[n].state &= ~STELLARIS_ADC_FIFO_FULL; | |
907 | if (tail + 1 == ((s->fifo[n].state >> 4) & 0xf)) | |
908 | s->fifo[n].state |= STELLARIS_ADC_FIFO_EMPTY; | |
909 | } | |
910 | return s->fifo[n].data[tail]; | |
911 | } | |
912 | ||
913 | static void stellaris_adc_fifo_write(stellaris_adc_state *s, int n, | |
914 | uint32_t value) | |
915 | { | |
916 | int head; | |
917 | ||
2c6554bc PB |
918 | /* TODO: Real hardware has limited size FIFOs. We have a full 16 entry |
919 | FIFO fir each sequencer. */ | |
9ee6e8bb PB |
920 | head = (s->fifo[n].state >> 4) & 0xf; |
921 | if (s->fifo[n].state & STELLARIS_ADC_FIFO_FULL) { | |
922 | s->ostat |= 1 << n; | |
923 | return; | |
924 | } | |
925 | s->fifo[n].data[head] = value; | |
926 | head = (head + 1) & 0xf; | |
927 | s->fifo[n].state &= ~STELLARIS_ADC_FIFO_EMPTY; | |
928 | s->fifo[n].state = (s->fifo[n].state & ~0xf0) | (head << 4); | |
929 | if ((s->fifo[n].state & 0xf) == head) | |
930 | s->fifo[n].state |= STELLARIS_ADC_FIFO_FULL; | |
931 | } | |
932 | ||
933 | static void stellaris_adc_update(stellaris_adc_state *s) | |
934 | { | |
935 | int level; | |
2c6554bc | 936 | int n; |
9ee6e8bb | 937 | |
2c6554bc PB |
938 | for (n = 0; n < 4; n++) { |
939 | level = (s->ris & s->im & (1 << n)) != 0; | |
940 | qemu_set_irq(s->irq[n], level); | |
941 | } | |
9ee6e8bb PB |
942 | } |
943 | ||
944 | static void stellaris_adc_trigger(void *opaque, int irq, int level) | |
945 | { | |
946 | stellaris_adc_state *s = (stellaris_adc_state *)opaque; | |
2c6554bc | 947 | int n; |
9ee6e8bb | 948 | |
2c6554bc PB |
949 | for (n = 0; n < 4; n++) { |
950 | if ((s->actss & (1 << n)) == 0) { | |
951 | continue; | |
952 | } | |
9ee6e8bb | 953 | |
2c6554bc PB |
954 | if (((s->emux >> (n * 4)) & 0xff) != 5) { |
955 | continue; | |
956 | } | |
957 | ||
958 | /* Some applications use the ADC as a random number source, so introduce | |
959 | some variation into the signal. */ | |
960 | s->noise = s->noise * 314159 + 1; | |
961 | /* ??? actual inputs not implemented. Return an arbitrary value. */ | |
962 | stellaris_adc_fifo_write(s, n, 0x200 + ((s->noise >> 16) & 7)); | |
963 | s->ris |= (1 << n); | |
964 | stellaris_adc_update(s); | |
965 | } | |
9ee6e8bb PB |
966 | } |
967 | ||
968 | static void stellaris_adc_reset(stellaris_adc_state *s) | |
969 | { | |
970 | int n; | |
971 | ||
972 | for (n = 0; n < 4; n++) { | |
973 | s->ssmux[n] = 0; | |
974 | s->ssctl[n] = 0; | |
975 | s->fifo[n].state = STELLARIS_ADC_FIFO_EMPTY; | |
976 | } | |
977 | } | |
978 | ||
c227f099 | 979 | static uint32_t stellaris_adc_read(void *opaque, target_phys_addr_t offset) |
9ee6e8bb PB |
980 | { |
981 | stellaris_adc_state *s = (stellaris_adc_state *)opaque; | |
982 | ||
983 | /* TODO: Implement this. */ | |
9ee6e8bb PB |
984 | if (offset >= 0x40 && offset < 0xc0) { |
985 | int n; | |
986 | n = (offset - 0x40) >> 5; | |
987 | switch (offset & 0x1f) { | |
988 | case 0x00: /* SSMUX */ | |
989 | return s->ssmux[n]; | |
990 | case 0x04: /* SSCTL */ | |
991 | return s->ssctl[n]; | |
992 | case 0x08: /* SSFIFO */ | |
993 | return stellaris_adc_fifo_read(s, n); | |
994 | case 0x0c: /* SSFSTAT */ | |
995 | return s->fifo[n].state; | |
996 | default: | |
997 | break; | |
998 | } | |
999 | } | |
1000 | switch (offset) { | |
1001 | case 0x00: /* ACTSS */ | |
1002 | return s->actss; | |
1003 | case 0x04: /* RIS */ | |
1004 | return s->ris; | |
1005 | case 0x08: /* IM */ | |
1006 | return s->im; | |
1007 | case 0x0c: /* ISC */ | |
1008 | return s->ris & s->im; | |
1009 | case 0x10: /* OSTAT */ | |
1010 | return s->ostat; | |
1011 | case 0x14: /* EMUX */ | |
1012 | return s->emux; | |
1013 | case 0x18: /* USTAT */ | |
1014 | return s->ustat; | |
1015 | case 0x20: /* SSPRI */ | |
1016 | return s->sspri; | |
1017 | case 0x30: /* SAC */ | |
1018 | return s->sac; | |
1019 | default: | |
2ac71179 | 1020 | hw_error("strllaris_adc_read: Bad offset 0x%x\n", |
9ee6e8bb PB |
1021 | (int)offset); |
1022 | return 0; | |
1023 | } | |
1024 | } | |
1025 | ||
c227f099 | 1026 | static void stellaris_adc_write(void *opaque, target_phys_addr_t offset, |
9ee6e8bb PB |
1027 | uint32_t value) |
1028 | { | |
1029 | stellaris_adc_state *s = (stellaris_adc_state *)opaque; | |
1030 | ||
1031 | /* TODO: Implement this. */ | |
9ee6e8bb PB |
1032 | if (offset >= 0x40 && offset < 0xc0) { |
1033 | int n; | |
1034 | n = (offset - 0x40) >> 5; | |
1035 | switch (offset & 0x1f) { | |
1036 | case 0x00: /* SSMUX */ | |
1037 | s->ssmux[n] = value & 0x33333333; | |
1038 | return; | |
1039 | case 0x04: /* SSCTL */ | |
1040 | if (value != 6) { | |
2ac71179 | 1041 | hw_error("ADC: Unimplemented sequence %x\n", |
9ee6e8bb PB |
1042 | value); |
1043 | } | |
1044 | s->ssctl[n] = value; | |
1045 | return; | |
1046 | default: | |
1047 | break; | |
1048 | } | |
1049 | } | |
1050 | switch (offset) { | |
1051 | case 0x00: /* ACTSS */ | |
1052 | s->actss = value & 0xf; | |
9ee6e8bb PB |
1053 | break; |
1054 | case 0x08: /* IM */ | |
1055 | s->im = value; | |
1056 | break; | |
1057 | case 0x0c: /* ISC */ | |
1058 | s->ris &= ~value; | |
1059 | break; | |
1060 | case 0x10: /* OSTAT */ | |
1061 | s->ostat &= ~value; | |
1062 | break; | |
1063 | case 0x14: /* EMUX */ | |
1064 | s->emux = value; | |
1065 | break; | |
1066 | case 0x18: /* USTAT */ | |
1067 | s->ustat &= ~value; | |
1068 | break; | |
1069 | case 0x20: /* SSPRI */ | |
1070 | s->sspri = value; | |
1071 | break; | |
1072 | case 0x28: /* PSSI */ | |
2ac71179 | 1073 | hw_error("Not implemented: ADC sample initiate\n"); |
9ee6e8bb PB |
1074 | break; |
1075 | case 0x30: /* SAC */ | |
1076 | s->sac = value; | |
1077 | break; | |
1078 | default: | |
2ac71179 | 1079 | hw_error("stellaris_adc_write: Bad offset 0x%x\n", (int)offset); |
9ee6e8bb PB |
1080 | } |
1081 | stellaris_adc_update(s); | |
1082 | } | |
1083 | ||
d60efc6b | 1084 | static CPUReadMemoryFunc * const stellaris_adc_readfn[] = { |
9ee6e8bb PB |
1085 | stellaris_adc_read, |
1086 | stellaris_adc_read, | |
1087 | stellaris_adc_read | |
1088 | }; | |
1089 | ||
d60efc6b | 1090 | static CPUWriteMemoryFunc * const stellaris_adc_writefn[] = { |
9ee6e8bb PB |
1091 | stellaris_adc_write, |
1092 | stellaris_adc_write, | |
1093 | stellaris_adc_write | |
1094 | }; | |
1095 | ||
23e39294 PB |
1096 | static void stellaris_adc_save(QEMUFile *f, void *opaque) |
1097 | { | |
1098 | stellaris_adc_state *s = (stellaris_adc_state *)opaque; | |
1099 | int i; | |
1100 | int j; | |
1101 | ||
1102 | qemu_put_be32(f, s->actss); | |
1103 | qemu_put_be32(f, s->ris); | |
1104 | qemu_put_be32(f, s->im); | |
1105 | qemu_put_be32(f, s->emux); | |
1106 | qemu_put_be32(f, s->ostat); | |
1107 | qemu_put_be32(f, s->ustat); | |
1108 | qemu_put_be32(f, s->sspri); | |
1109 | qemu_put_be32(f, s->sac); | |
1110 | for (i = 0; i < 4; i++) { | |
1111 | qemu_put_be32(f, s->fifo[i].state); | |
1112 | for (j = 0; j < 16; j++) { | |
1113 | qemu_put_be32(f, s->fifo[i].data[j]); | |
1114 | } | |
1115 | qemu_put_be32(f, s->ssmux[i]); | |
1116 | qemu_put_be32(f, s->ssctl[i]); | |
1117 | } | |
1118 | qemu_put_be32(f, s->noise); | |
1119 | } | |
1120 | ||
1121 | static int stellaris_adc_load(QEMUFile *f, void *opaque, int version_id) | |
1122 | { | |
1123 | stellaris_adc_state *s = (stellaris_adc_state *)opaque; | |
1124 | int i; | |
1125 | int j; | |
1126 | ||
1127 | if (version_id != 1) | |
1128 | return -EINVAL; | |
1129 | ||
1130 | s->actss = qemu_get_be32(f); | |
1131 | s->ris = qemu_get_be32(f); | |
1132 | s->im = qemu_get_be32(f); | |
1133 | s->emux = qemu_get_be32(f); | |
1134 | s->ostat = qemu_get_be32(f); | |
1135 | s->ustat = qemu_get_be32(f); | |
1136 | s->sspri = qemu_get_be32(f); | |
1137 | s->sac = qemu_get_be32(f); | |
1138 | for (i = 0; i < 4; i++) { | |
1139 | s->fifo[i].state = qemu_get_be32(f); | |
1140 | for (j = 0; j < 16; j++) { | |
1141 | s->fifo[i].data[j] = qemu_get_be32(f); | |
1142 | } | |
1143 | s->ssmux[i] = qemu_get_be32(f); | |
1144 | s->ssctl[i] = qemu_get_be32(f); | |
1145 | } | |
1146 | s->noise = qemu_get_be32(f); | |
1147 | ||
1148 | return 0; | |
1149 | } | |
1150 | ||
81a322d4 | 1151 | static int stellaris_adc_init(SysBusDevice *dev) |
9ee6e8bb | 1152 | { |
40905a6a | 1153 | stellaris_adc_state *s = FROM_SYSBUS(stellaris_adc_state, dev); |
9ee6e8bb | 1154 | int iomemtype; |
2c6554bc | 1155 | int n; |
9ee6e8bb | 1156 | |
2c6554bc | 1157 | for (n = 0; n < 4; n++) { |
40905a6a | 1158 | sysbus_init_irq(dev, &s->irq[n]); |
2c6554bc | 1159 | } |
9ee6e8bb | 1160 | |
1eed09cb | 1161 | iomemtype = cpu_register_io_memory(stellaris_adc_readfn, |
2507c12a AG |
1162 | stellaris_adc_writefn, s, |
1163 | DEVICE_NATIVE_ENDIAN); | |
40905a6a | 1164 | sysbus_init_mmio(dev, 0x1000, iomemtype); |
9ee6e8bb | 1165 | stellaris_adc_reset(s); |
40905a6a | 1166 | qdev_init_gpio_in(&dev->qdev, stellaris_adc_trigger, 1); |
0be71e32 | 1167 | register_savevm(&dev->qdev, "stellaris_adc", -1, 1, |
23e39294 | 1168 | stellaris_adc_save, stellaris_adc_load, s); |
81a322d4 | 1169 | return 0; |
9ee6e8bb PB |
1170 | } |
1171 | ||
775616c3 PB |
1172 | /* Some boards have both an OLED controller and SD card connected to |
1173 | the same SSI port, with the SD card chip select connected to a | |
1174 | GPIO pin. Technically the OLED chip select is connected to the SSI | |
1175 | Fss pin. We do not bother emulating that as both devices should | |
1176 | never be selected simultaneously, and our OLED controller ignores stray | |
1177 | 0xff commands that occur when deselecting the SD card. */ | |
1178 | ||
1179 | typedef struct { | |
5493e33f | 1180 | SSISlave ssidev; |
775616c3 PB |
1181 | qemu_irq irq; |
1182 | int current_dev; | |
5493e33f | 1183 | SSIBus *bus[2]; |
775616c3 PB |
1184 | } stellaris_ssi_bus_state; |
1185 | ||
1186 | static void stellaris_ssi_bus_select(void *opaque, int irq, int level) | |
1187 | { | |
1188 | stellaris_ssi_bus_state *s = (stellaris_ssi_bus_state *)opaque; | |
1189 | ||
1190 | s->current_dev = level; | |
1191 | } | |
1192 | ||
5493e33f | 1193 | static uint32_t stellaris_ssi_bus_transfer(SSISlave *dev, uint32_t val) |
775616c3 | 1194 | { |
5493e33f | 1195 | stellaris_ssi_bus_state *s = FROM_SSI_SLAVE(stellaris_ssi_bus_state, dev); |
775616c3 | 1196 | |
5493e33f | 1197 | return ssi_transfer(s->bus[s->current_dev], val); |
775616c3 PB |
1198 | } |
1199 | ||
a4dec1d0 JQ |
1200 | static const VMStateDescription vmstate_stellaris_ssi_bus = { |
1201 | .name = "stellaris_ssi_bus", | |
1202 | .version_id = 1, | |
1203 | .minimum_version_id = 1, | |
1204 | .minimum_version_id_old = 1, | |
1205 | .fields = (VMStateField[]) { | |
1206 | VMSTATE_INT32(current_dev, stellaris_ssi_bus_state), | |
1207 | VMSTATE_END_OF_LIST() | |
1208 | } | |
1209 | }; | |
23e39294 | 1210 | |
81a322d4 | 1211 | static int stellaris_ssi_bus_init(SSISlave *dev) |
775616c3 | 1212 | { |
5493e33f PB |
1213 | stellaris_ssi_bus_state *s = FROM_SSI_SLAVE(stellaris_ssi_bus_state, dev); |
1214 | ||
02e2da45 PB |
1215 | s->bus[0] = ssi_create_bus(&dev->qdev, "ssi0"); |
1216 | s->bus[1] = ssi_create_bus(&dev->qdev, "ssi1"); | |
5493e33f PB |
1217 | qdev_init_gpio_in(&dev->qdev, stellaris_ssi_bus_select, 1); |
1218 | ||
a4dec1d0 | 1219 | vmstate_register(&dev->qdev, -1, &vmstate_stellaris_ssi_bus, s); |
81a322d4 | 1220 | return 0; |
775616c3 PB |
1221 | } |
1222 | ||
9ee6e8bb PB |
1223 | /* Board init. */ |
1224 | static stellaris_board_info stellaris_boards[] = { | |
1225 | { "LM3S811EVB", | |
1226 | 0, | |
1227 | 0x0032000e, | |
1228 | 0x001f001f, /* dc0 */ | |
1229 | 0x001132bf, | |
1230 | 0x01071013, | |
1231 | 0x3f0f01ff, | |
1232 | 0x0000001f, | |
cf0dbb21 | 1233 | BP_OLED_I2C |
9ee6e8bb PB |
1234 | }, |
1235 | { "LM3S6965EVB", | |
1236 | 0x10010002, | |
1237 | 0x1073402e, | |
1238 | 0x00ff007f, /* dc0 */ | |
1239 | 0x001133ff, | |
1240 | 0x030f5317, | |
1241 | 0x0f0f87ff, | |
1242 | 0x5000007f, | |
cf0dbb21 | 1243 | BP_OLED_SSI | BP_GAMEPAD |
9ee6e8bb PB |
1244 | } |
1245 | }; | |
1246 | ||
1247 | static void stellaris_init(const char *kernel_filename, const char *cpu_model, | |
3023f332 | 1248 | stellaris_board_info *board) |
9ee6e8bb PB |
1249 | { |
1250 | static const int uart_irq[] = {5, 6, 33, 34}; | |
1251 | static const int timer_irq[] = {19, 21, 23, 35}; | |
1252 | static const uint32_t gpio_addr[7] = | |
1253 | { 0x40004000, 0x40005000, 0x40006000, 0x40007000, | |
1254 | 0x40024000, 0x40025000, 0x40026000}; | |
1255 | static const int gpio_irq[7] = {0, 1, 2, 3, 4, 30, 31}; | |
1256 | ||
1257 | qemu_irq *pic; | |
40905a6a PB |
1258 | DeviceState *gpio_dev[7]; |
1259 | qemu_irq gpio_in[7][8]; | |
1260 | qemu_irq gpio_out[7][8]; | |
9ee6e8bb PB |
1261 | qemu_irq adc; |
1262 | int sram_size; | |
1263 | int flash_size; | |
1264 | i2c_bus *i2c; | |
40905a6a | 1265 | DeviceState *dev; |
9ee6e8bb | 1266 | int i; |
40905a6a | 1267 | int j; |
9ee6e8bb PB |
1268 | |
1269 | flash_size = ((board->dc0 & 0xffff) + 1) << 1; | |
1270 | sram_size = (board->dc0 >> 18) + 1; | |
1271 | pic = armv7m_init(flash_size, sram_size, kernel_filename, cpu_model); | |
1272 | ||
1273 | if (board->dc1 & (1 << 16)) { | |
40905a6a PB |
1274 | dev = sysbus_create_varargs("stellaris-adc", 0x40038000, |
1275 | pic[14], pic[15], pic[16], pic[17], NULL); | |
1276 | adc = qdev_get_gpio_in(dev, 0); | |
9ee6e8bb PB |
1277 | } else { |
1278 | adc = NULL; | |
1279 | } | |
1280 | for (i = 0; i < 4; i++) { | |
1281 | if (board->dc2 & (0x10000 << i)) { | |
40905a6a PB |
1282 | dev = sysbus_create_simple("stellaris-gptm", |
1283 | 0x40030000 + i * 0x1000, | |
1284 | pic[timer_irq[i]]); | |
1285 | /* TODO: This is incorrect, but we get away with it because | |
1286 | the ADC output is only ever pulsed. */ | |
1287 | qdev_connect_gpio_out(dev, 0, adc); | |
9ee6e8bb PB |
1288 | } |
1289 | } | |
1290 | ||
eea589cc | 1291 | stellaris_sys_init(0x400fe000, pic[28], board, nd_table[0].macaddr); |
9ee6e8bb PB |
1292 | |
1293 | for (i = 0; i < 7; i++) { | |
1294 | if (board->dc4 & (1 << i)) { | |
7063f49f | 1295 | gpio_dev[i] = sysbus_create_simple("pl061_luminary", gpio_addr[i], |
40905a6a PB |
1296 | pic[gpio_irq[i]]); |
1297 | for (j = 0; j < 8; j++) { | |
1298 | gpio_in[i][j] = qdev_get_gpio_in(gpio_dev[i], j); | |
1299 | gpio_out[i][j] = NULL; | |
1300 | } | |
9ee6e8bb PB |
1301 | } |
1302 | } | |
1303 | ||
1304 | if (board->dc2 & (1 << 12)) { | |
1de9610c | 1305 | dev = sysbus_create_simple("stellaris-i2c", 0x40020000, pic[8]); |
02e2da45 | 1306 | i2c = (i2c_bus *)qdev_get_child_bus(dev, "i2c"); |
cf0dbb21 | 1307 | if (board->peripherals & BP_OLED_I2C) { |
d2199005 | 1308 | i2c_create_slave(i2c, "ssd0303", 0x3d); |
9ee6e8bb PB |
1309 | } |
1310 | } | |
1311 | ||
1312 | for (i = 0; i < 4; i++) { | |
1313 | if (board->dc2 & (1 << i)) { | |
a7d518a6 PB |
1314 | sysbus_create_simple("pl011_luminary", 0x4000c000 + i * 0x1000, |
1315 | pic[uart_irq[i]]); | |
9ee6e8bb PB |
1316 | } |
1317 | } | |
1318 | if (board->dc2 & (1 << 4)) { | |
5493e33f | 1319 | dev = sysbus_create_simple("pl022", 0x40008000, pic[7]); |
cf0dbb21 | 1320 | if (board->peripherals & BP_OLED_SSI) { |
5493e33f PB |
1321 | DeviceState *mux; |
1322 | void *bus; | |
775616c3 | 1323 | |
5493e33f PB |
1324 | bus = qdev_get_child_bus(dev, "ssi"); |
1325 | mux = ssi_create_slave(bus, "evb6965-ssi"); | |
1326 | gpio_out[GPIO_D][0] = qdev_get_gpio_in(mux, 0); | |
775616c3 | 1327 | |
5493e33f | 1328 | bus = qdev_get_child_bus(mux, "ssi0"); |
22ed1d34 | 1329 | ssi_create_slave(bus, "ssi-sd"); |
5493e33f PB |
1330 | |
1331 | bus = qdev_get_child_bus(mux, "ssi1"); | |
1332 | dev = ssi_create_slave(bus, "ssd0323"); | |
1333 | gpio_out[GPIO_C][7] = qdev_get_gpio_in(dev, 0); | |
775616c3 | 1334 | |
775616c3 PB |
1335 | /* Make sure the select pin is high. */ |
1336 | qemu_irq_raise(gpio_out[GPIO_D][0]); | |
9ee6e8bb PB |
1337 | } |
1338 | } | |
a5580466 PB |
1339 | if (board->dc4 & (1 << 28)) { |
1340 | DeviceState *enet; | |
1341 | ||
1342 | qemu_check_nic_model(&nd_table[0], "stellaris"); | |
1343 | ||
1344 | enet = qdev_create(NULL, "stellaris_enet"); | |
540f006a | 1345 | qdev_set_nic_properties(enet, &nd_table[0]); |
e23a1b33 | 1346 | qdev_init_nofail(enet); |
a5580466 PB |
1347 | sysbus_mmio_map(sysbus_from_qdev(enet), 0, 0x40048000); |
1348 | sysbus_connect_irq(sysbus_from_qdev(enet), 0, pic[42]); | |
1349 | } | |
cf0dbb21 PB |
1350 | if (board->peripherals & BP_GAMEPAD) { |
1351 | qemu_irq gpad_irq[5]; | |
1352 | static const int gpad_keycode[5] = { 0xc8, 0xd0, 0xcb, 0xcd, 0x1d }; | |
1353 | ||
1354 | gpad_irq[0] = qemu_irq_invert(gpio_in[GPIO_E][0]); /* up */ | |
1355 | gpad_irq[1] = qemu_irq_invert(gpio_in[GPIO_E][1]); /* down */ | |
1356 | gpad_irq[2] = qemu_irq_invert(gpio_in[GPIO_E][2]); /* left */ | |
1357 | gpad_irq[3] = qemu_irq_invert(gpio_in[GPIO_E][3]); /* right */ | |
1358 | gpad_irq[4] = qemu_irq_invert(gpio_in[GPIO_F][1]); /* select */ | |
1359 | ||
1360 | stellaris_gamepad_init(5, gpad_irq, gpad_keycode); | |
1361 | } | |
40905a6a PB |
1362 | for (i = 0; i < 7; i++) { |
1363 | if (board->dc4 & (1 << i)) { | |
1364 | for (j = 0; j < 8; j++) { | |
1365 | if (gpio_out[i][j]) { | |
1366 | qdev_connect_gpio_out(gpio_dev[i], j, gpio_out[i][j]); | |
1367 | } | |
1368 | } | |
1369 | } | |
1370 | } | |
9ee6e8bb PB |
1371 | } |
1372 | ||
1373 | /* FIXME: Figure out how to generate these from stellaris_boards. */ | |
c227f099 | 1374 | static void lm3s811evb_init(ram_addr_t ram_size, |
3023f332 | 1375 | const char *boot_device, |
9ee6e8bb PB |
1376 | const char *kernel_filename, const char *kernel_cmdline, |
1377 | const char *initrd_filename, const char *cpu_model) | |
1378 | { | |
3023f332 | 1379 | stellaris_init(kernel_filename, cpu_model, &stellaris_boards[0]); |
9ee6e8bb PB |
1380 | } |
1381 | ||
c227f099 | 1382 | static void lm3s6965evb_init(ram_addr_t ram_size, |
3023f332 | 1383 | const char *boot_device, |
9ee6e8bb PB |
1384 | const char *kernel_filename, const char *kernel_cmdline, |
1385 | const char *initrd_filename, const char *cpu_model) | |
1386 | { | |
3023f332 | 1387 | stellaris_init(kernel_filename, cpu_model, &stellaris_boards[1]); |
9ee6e8bb PB |
1388 | } |
1389 | ||
f80f9ec9 | 1390 | static QEMUMachine lm3s811evb_machine = { |
4b32e168 AL |
1391 | .name = "lm3s811evb", |
1392 | .desc = "Stellaris LM3S811EVB", | |
1393 | .init = lm3s811evb_init, | |
9ee6e8bb PB |
1394 | }; |
1395 | ||
f80f9ec9 | 1396 | static QEMUMachine lm3s6965evb_machine = { |
4b32e168 AL |
1397 | .name = "lm3s6965evb", |
1398 | .desc = "Stellaris LM3S6965EVB", | |
1399 | .init = lm3s6965evb_init, | |
9ee6e8bb | 1400 | }; |
1de9610c | 1401 | |
f80f9ec9 AL |
1402 | static void stellaris_machine_init(void) |
1403 | { | |
1404 | qemu_register_machine(&lm3s811evb_machine); | |
1405 | qemu_register_machine(&lm3s6965evb_machine); | |
1406 | } | |
1407 | ||
1408 | machine_init(stellaris_machine_init); | |
1409 | ||
5493e33f | 1410 | static SSISlaveInfo stellaris_ssi_bus_info = { |
074f2fff GH |
1411 | .qdev.name = "evb6965-ssi", |
1412 | .qdev.size = sizeof(stellaris_ssi_bus_state), | |
5493e33f PB |
1413 | .init = stellaris_ssi_bus_init, |
1414 | .transfer = stellaris_ssi_bus_transfer | |
1415 | }; | |
1416 | ||
1de9610c PB |
1417 | static void stellaris_register_devices(void) |
1418 | { | |
1419 | sysbus_register_dev("stellaris-i2c", sizeof(stellaris_i2c_state), | |
1420 | stellaris_i2c_init); | |
40905a6a PB |
1421 | sysbus_register_dev("stellaris-gptm", sizeof(gptm_state), |
1422 | stellaris_gptm_init); | |
1423 | sysbus_register_dev("stellaris-adc", sizeof(stellaris_adc_state), | |
1424 | stellaris_adc_init); | |
074f2fff | 1425 | ssi_register_slave(&stellaris_ssi_bus_info); |
1de9610c PB |
1426 | } |
1427 | ||
1428 | device_init(stellaris_register_devices) |