1 /* 2 * Luminary Micro Stellaris peripherals 3 * 4 * Copyright (c) 2006 CodeSourcery. 5 * Written by Paul Brook 6 * 7 * This code is licensed under the GPL. 8 */ 9 10 #include "qemu/osdep.h" 11 #include "qapi/error.h" 12 #include "hw/sysbus.h" 13 #include "hw/ssi/ssi.h" 14 #include "hw/arm/arm.h" 15 #include "hw/devices.h" 16 #include "qemu/timer.h" 17 #include "hw/i2c/i2c.h" 18 #include "net/net.h" 19 #include "hw/boards.h" 20 #include "qemu/log.h" 21 #include "exec/address-spaces.h" 22 #include "sysemu/sysemu.h" 23 #include "hw/char/pl011.h" 24 #include "hw/misc/unimp.h" 25 26 #define GPIO_A 0 27 #define GPIO_B 1 28 #define GPIO_C 2 29 #define GPIO_D 3 30 #define GPIO_E 4 31 #define GPIO_F 5 32 #define GPIO_G 6 33 34 #define BP_OLED_I2C 0x01 35 #define BP_OLED_SSI 0x02 36 #define BP_GAMEPAD 0x04 37 38 #define NUM_IRQ_LINES 64 39 40 typedef const struct { 41 const char *name; 42 uint32_t did0; 43 uint32_t did1; 44 uint32_t dc0; 45 uint32_t dc1; 46 uint32_t dc2; 47 uint32_t dc3; 48 uint32_t dc4; 49 uint32_t peripherals; 50 } stellaris_board_info; 51 52 /* General purpose timer module. */ 53 54 #define TYPE_STELLARIS_GPTM "stellaris-gptm" 55 #define STELLARIS_GPTM(obj) \ 56 OBJECT_CHECK(gptm_state, (obj), TYPE_STELLARIS_GPTM) 57 58 typedef struct gptm_state { 59 SysBusDevice parent_obj; 60 61 MemoryRegion iomem; 62 uint32_t config; 63 uint32_t mode[2]; 64 uint32_t control; 65 uint32_t state; 66 uint32_t mask; 67 uint32_t load[2]; 68 uint32_t match[2]; 69 uint32_t prescale[2]; 70 uint32_t match_prescale[2]; 71 uint32_t rtc; 72 int64_t tick[2]; 73 struct gptm_state *opaque[2]; 74 QEMUTimer *timer[2]; 75 /* The timers have an alternate output used to trigger the ADC. */ 76 qemu_irq trigger; 77 qemu_irq irq; 78 } gptm_state; 79 80 static void gptm_update_irq(gptm_state *s) 81 { 82 int level; 83 level = (s->state & s->mask) != 0; 84 qemu_set_irq(s->irq, level); 85 } 86 87 static void gptm_stop(gptm_state *s, int n) 88 { 89 timer_del(s->timer[n]); 90 } 91 92 static void gptm_reload(gptm_state *s, int n, int reset) 93 { 94 int64_t tick; 95 if (reset) 96 tick = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); 97 else 98 tick = s->tick[n]; 99 100 if (s->config == 0) { 101 /* 32-bit CountDown. */ 102 uint32_t count; 103 count = s->load[0] | (s->load[1] << 16); 104 tick += (int64_t)count * system_clock_scale; 105 } else if (s->config == 1) { 106 /* 32-bit RTC. 1Hz tick. */ 107 tick += NANOSECONDS_PER_SECOND; 108 } else if (s->mode[n] == 0xa) { 109 /* PWM mode. Not implemented. */ 110 } else { 111 qemu_log_mask(LOG_UNIMP, 112 "GPTM: 16-bit timer mode unimplemented: 0x%x\n", 113 s->mode[n]); 114 return; 115 } 116 s->tick[n] = tick; 117 timer_mod(s->timer[n], tick); 118 } 119 120 static void gptm_tick(void *opaque) 121 { 122 gptm_state **p = (gptm_state **)opaque; 123 gptm_state *s; 124 int n; 125 126 s = *p; 127 n = p - s->opaque; 128 if (s->config == 0) { 129 s->state |= 1; 130 if ((s->control & 0x20)) { 131 /* Output trigger. */ 132 qemu_irq_pulse(s->trigger); 133 } 134 if (s->mode[0] & 1) { 135 /* One-shot. */ 136 s->control &= ~1; 137 } else { 138 /* Periodic. */ 139 gptm_reload(s, 0, 0); 140 } 141 } else if (s->config == 1) { 142 /* RTC. */ 143 uint32_t match; 144 s->rtc++; 145 match = s->match[0] | (s->match[1] << 16); 146 if (s->rtc > match) 147 s->rtc = 0; 148 if (s->rtc == 0) { 149 s->state |= 8; 150 } 151 gptm_reload(s, 0, 0); 152 } else if (s->mode[n] == 0xa) { 153 /* PWM mode. Not implemented. */ 154 } else { 155 qemu_log_mask(LOG_UNIMP, 156 "GPTM: 16-bit timer mode unimplemented: 0x%x\n", 157 s->mode[n]); 158 } 159 gptm_update_irq(s); 160 } 161 162 static uint64_t gptm_read(void *opaque, hwaddr offset, 163 unsigned size) 164 { 165 gptm_state *s = (gptm_state *)opaque; 166 167 switch (offset) { 168 case 0x00: /* CFG */ 169 return s->config; 170 case 0x04: /* TAMR */ 171 return s->mode[0]; 172 case 0x08: /* TBMR */ 173 return s->mode[1]; 174 case 0x0c: /* CTL */ 175 return s->control; 176 case 0x18: /* IMR */ 177 return s->mask; 178 case 0x1c: /* RIS */ 179 return s->state; 180 case 0x20: /* MIS */ 181 return s->state & s->mask; 182 case 0x24: /* CR */ 183 return 0; 184 case 0x28: /* TAILR */ 185 return s->load[0] | ((s->config < 4) ? (s->load[1] << 16) : 0); 186 case 0x2c: /* TBILR */ 187 return s->load[1]; 188 case 0x30: /* TAMARCHR */ 189 return s->match[0] | ((s->config < 4) ? (s->match[1] << 16) : 0); 190 case 0x34: /* TBMATCHR */ 191 return s->match[1]; 192 case 0x38: /* TAPR */ 193 return s->prescale[0]; 194 case 0x3c: /* TBPR */ 195 return s->prescale[1]; 196 case 0x40: /* TAPMR */ 197 return s->match_prescale[0]; 198 case 0x44: /* TBPMR */ 199 return s->match_prescale[1]; 200 case 0x48: /* TAR */ 201 if (s->config == 1) { 202 return s->rtc; 203 } 204 qemu_log_mask(LOG_UNIMP, 205 "GPTM: read of TAR but timer read not supported"); 206 return 0; 207 case 0x4c: /* TBR */ 208 qemu_log_mask(LOG_UNIMP, 209 "GPTM: read of TBR but timer read not supported"); 210 return 0; 211 default: 212 qemu_log_mask(LOG_GUEST_ERROR, 213 "GPTM: read at bad offset 0x%x\n", (int)offset); 214 return 0; 215 } 216 } 217 218 static void gptm_write(void *opaque, hwaddr offset, 219 uint64_t value, unsigned size) 220 { 221 gptm_state *s = (gptm_state *)opaque; 222 uint32_t oldval; 223 224 /* The timers should be disabled before changing the configuration. 225 We take advantage of this and defer everything until the timer 226 is enabled. */ 227 switch (offset) { 228 case 0x00: /* CFG */ 229 s->config = value; 230 break; 231 case 0x04: /* TAMR */ 232 s->mode[0] = value; 233 break; 234 case 0x08: /* TBMR */ 235 s->mode[1] = value; 236 break; 237 case 0x0c: /* CTL */ 238 oldval = s->control; 239 s->control = value; 240 /* TODO: Implement pause. */ 241 if ((oldval ^ value) & 1) { 242 if (value & 1) { 243 gptm_reload(s, 0, 1); 244 } else { 245 gptm_stop(s, 0); 246 } 247 } 248 if (((oldval ^ value) & 0x100) && s->config >= 4) { 249 if (value & 0x100) { 250 gptm_reload(s, 1, 1); 251 } else { 252 gptm_stop(s, 1); 253 } 254 } 255 break; 256 case 0x18: /* IMR */ 257 s->mask = value & 0x77; 258 gptm_update_irq(s); 259 break; 260 case 0x24: /* CR */ 261 s->state &= ~value; 262 break; 263 case 0x28: /* TAILR */ 264 s->load[0] = value & 0xffff; 265 if (s->config < 4) { 266 s->load[1] = value >> 16; 267 } 268 break; 269 case 0x2c: /* TBILR */ 270 s->load[1] = value & 0xffff; 271 break; 272 case 0x30: /* TAMARCHR */ 273 s->match[0] = value & 0xffff; 274 if (s->config < 4) { 275 s->match[1] = value >> 16; 276 } 277 break; 278 case 0x34: /* TBMATCHR */ 279 s->match[1] = value >> 16; 280 break; 281 case 0x38: /* TAPR */ 282 s->prescale[0] = value; 283 break; 284 case 0x3c: /* TBPR */ 285 s->prescale[1] = value; 286 break; 287 case 0x40: /* TAPMR */ 288 s->match_prescale[0] = value; 289 break; 290 case 0x44: /* TBPMR */ 291 s->match_prescale[0] = value; 292 break; 293 default: 294 qemu_log_mask(LOG_GUEST_ERROR, 295 "GPTM: read at bad offset 0x%x\n", (int)offset); 296 } 297 gptm_update_irq(s); 298 } 299 300 static const MemoryRegionOps gptm_ops = { 301 .read = gptm_read, 302 .write = gptm_write, 303 .endianness = DEVICE_NATIVE_ENDIAN, 304 }; 305 306 static const VMStateDescription vmstate_stellaris_gptm = { 307 .name = "stellaris_gptm", 308 .version_id = 1, 309 .minimum_version_id = 1, 310 .fields = (VMStateField[]) { 311 VMSTATE_UINT32(config, gptm_state), 312 VMSTATE_UINT32_ARRAY(mode, gptm_state, 2), 313 VMSTATE_UINT32(control, gptm_state), 314 VMSTATE_UINT32(state, gptm_state), 315 VMSTATE_UINT32(mask, gptm_state), 316 VMSTATE_UNUSED(8), 317 VMSTATE_UINT32_ARRAY(load, gptm_state, 2), 318 VMSTATE_UINT32_ARRAY(match, gptm_state, 2), 319 VMSTATE_UINT32_ARRAY(prescale, gptm_state, 2), 320 VMSTATE_UINT32_ARRAY(match_prescale, gptm_state, 2), 321 VMSTATE_UINT32(rtc, gptm_state), 322 VMSTATE_INT64_ARRAY(tick, gptm_state, 2), 323 VMSTATE_TIMER_PTR_ARRAY(timer, gptm_state, 2), 324 VMSTATE_END_OF_LIST() 325 } 326 }; 327 328 static void stellaris_gptm_init(Object *obj) 329 { 330 DeviceState *dev = DEVICE(obj); 331 gptm_state *s = STELLARIS_GPTM(obj); 332 SysBusDevice *sbd = SYS_BUS_DEVICE(obj); 333 334 sysbus_init_irq(sbd, &s->irq); 335 qdev_init_gpio_out(dev, &s->trigger, 1); 336 337 memory_region_init_io(&s->iomem, obj, &gptm_ops, s, 338 "gptm", 0x1000); 339 sysbus_init_mmio(sbd, &s->iomem); 340 341 s->opaque[0] = s->opaque[1] = s; 342 s->timer[0] = timer_new_ns(QEMU_CLOCK_VIRTUAL, gptm_tick, &s->opaque[0]); 343 s->timer[1] = timer_new_ns(QEMU_CLOCK_VIRTUAL, gptm_tick, &s->opaque[1]); 344 } 345 346 347 /* System controller. */ 348 349 typedef struct { 350 MemoryRegion iomem; 351 uint32_t pborctl; 352 uint32_t ldopctl; 353 uint32_t int_status; 354 uint32_t int_mask; 355 uint32_t resc; 356 uint32_t rcc; 357 uint32_t rcc2; 358 uint32_t rcgc[3]; 359 uint32_t scgc[3]; 360 uint32_t dcgc[3]; 361 uint32_t clkvclr; 362 uint32_t ldoarst; 363 uint32_t user0; 364 uint32_t user1; 365 qemu_irq irq; 366 stellaris_board_info *board; 367 } ssys_state; 368 369 static void ssys_update(ssys_state *s) 370 { 371 qemu_set_irq(s->irq, (s->int_status & s->int_mask) != 0); 372 } 373 374 static uint32_t pllcfg_sandstorm[16] = { 375 0x31c0, /* 1 Mhz */ 376 0x1ae0, /* 1.8432 Mhz */ 377 0x18c0, /* 2 Mhz */ 378 0xd573, /* 2.4576 Mhz */ 379 0x37a6, /* 3.57954 Mhz */ 380 0x1ae2, /* 3.6864 Mhz */ 381 0x0c40, /* 4 Mhz */ 382 0x98bc, /* 4.906 Mhz */ 383 0x935b, /* 4.9152 Mhz */ 384 0x09c0, /* 5 Mhz */ 385 0x4dee, /* 5.12 Mhz */ 386 0x0c41, /* 6 Mhz */ 387 0x75db, /* 6.144 Mhz */ 388 0x1ae6, /* 7.3728 Mhz */ 389 0x0600, /* 8 Mhz */ 390 0x585b /* 8.192 Mhz */ 391 }; 392 393 static uint32_t pllcfg_fury[16] = { 394 0x3200, /* 1 Mhz */ 395 0x1b20, /* 1.8432 Mhz */ 396 0x1900, /* 2 Mhz */ 397 0xf42b, /* 2.4576 Mhz */ 398 0x37e3, /* 3.57954 Mhz */ 399 0x1b21, /* 3.6864 Mhz */ 400 0x0c80, /* 4 Mhz */ 401 0x98ee, /* 4.906 Mhz */ 402 0xd5b4, /* 4.9152 Mhz */ 403 0x0a00, /* 5 Mhz */ 404 0x4e27, /* 5.12 Mhz */ 405 0x1902, /* 6 Mhz */ 406 0xec1c, /* 6.144 Mhz */ 407 0x1b23, /* 7.3728 Mhz */ 408 0x0640, /* 8 Mhz */ 409 0xb11c /* 8.192 Mhz */ 410 }; 411 412 #define DID0_VER_MASK 0x70000000 413 #define DID0_VER_0 0x00000000 414 #define DID0_VER_1 0x10000000 415 416 #define DID0_CLASS_MASK 0x00FF0000 417 #define DID0_CLASS_SANDSTORM 0x00000000 418 #define DID0_CLASS_FURY 0x00010000 419 420 static int ssys_board_class(const ssys_state *s) 421 { 422 uint32_t did0 = s->board->did0; 423 switch (did0 & DID0_VER_MASK) { 424 case DID0_VER_0: 425 return DID0_CLASS_SANDSTORM; 426 case DID0_VER_1: 427 switch (did0 & DID0_CLASS_MASK) { 428 case DID0_CLASS_SANDSTORM: 429 case DID0_CLASS_FURY: 430 return did0 & DID0_CLASS_MASK; 431 } 432 /* for unknown classes, fall through */ 433 default: 434 /* This can only happen if the hardwired constant did0 value 435 * in this board's stellaris_board_info struct is wrong. 436 */ 437 g_assert_not_reached(); 438 } 439 } 440 441 static uint64_t ssys_read(void *opaque, hwaddr offset, 442 unsigned size) 443 { 444 ssys_state *s = (ssys_state *)opaque; 445 446 switch (offset) { 447 case 0x000: /* DID0 */ 448 return s->board->did0; 449 case 0x004: /* DID1 */ 450 return s->board->did1; 451 case 0x008: /* DC0 */ 452 return s->board->dc0; 453 case 0x010: /* DC1 */ 454 return s->board->dc1; 455 case 0x014: /* DC2 */ 456 return s->board->dc2; 457 case 0x018: /* DC3 */ 458 return s->board->dc3; 459 case 0x01c: /* DC4 */ 460 return s->board->dc4; 461 case 0x030: /* PBORCTL */ 462 return s->pborctl; 463 case 0x034: /* LDOPCTL */ 464 return s->ldopctl; 465 case 0x040: /* SRCR0 */ 466 return 0; 467 case 0x044: /* SRCR1 */ 468 return 0; 469 case 0x048: /* SRCR2 */ 470 return 0; 471 case 0x050: /* RIS */ 472 return s->int_status; 473 case 0x054: /* IMC */ 474 return s->int_mask; 475 case 0x058: /* MISC */ 476 return s->int_status & s->int_mask; 477 case 0x05c: /* RESC */ 478 return s->resc; 479 case 0x060: /* RCC */ 480 return s->rcc; 481 case 0x064: /* PLLCFG */ 482 { 483 int xtal; 484 xtal = (s->rcc >> 6) & 0xf; 485 switch (ssys_board_class(s)) { 486 case DID0_CLASS_FURY: 487 return pllcfg_fury[xtal]; 488 case DID0_CLASS_SANDSTORM: 489 return pllcfg_sandstorm[xtal]; 490 default: 491 g_assert_not_reached(); 492 } 493 } 494 case 0x070: /* RCC2 */ 495 return s->rcc2; 496 case 0x100: /* RCGC0 */ 497 return s->rcgc[0]; 498 case 0x104: /* RCGC1 */ 499 return s->rcgc[1]; 500 case 0x108: /* RCGC2 */ 501 return s->rcgc[2]; 502 case 0x110: /* SCGC0 */ 503 return s->scgc[0]; 504 case 0x114: /* SCGC1 */ 505 return s->scgc[1]; 506 case 0x118: /* SCGC2 */ 507 return s->scgc[2]; 508 case 0x120: /* DCGC0 */ 509 return s->dcgc[0]; 510 case 0x124: /* DCGC1 */ 511 return s->dcgc[1]; 512 case 0x128: /* DCGC2 */ 513 return s->dcgc[2]; 514 case 0x150: /* CLKVCLR */ 515 return s->clkvclr; 516 case 0x160: /* LDOARST */ 517 return s->ldoarst; 518 case 0x1e0: /* USER0 */ 519 return s->user0; 520 case 0x1e4: /* USER1 */ 521 return s->user1; 522 default: 523 qemu_log_mask(LOG_GUEST_ERROR, 524 "SSYS: read at bad offset 0x%x\n", (int)offset); 525 return 0; 526 } 527 } 528 529 static bool ssys_use_rcc2(ssys_state *s) 530 { 531 return (s->rcc2 >> 31) & 0x1; 532 } 533 534 /* 535 * Caculate the sys. clock period in ms. 536 */ 537 static void ssys_calculate_system_clock(ssys_state *s) 538 { 539 if (ssys_use_rcc2(s)) { 540 system_clock_scale = 5 * (((s->rcc2 >> 23) & 0x3f) + 1); 541 } else { 542 system_clock_scale = 5 * (((s->rcc >> 23) & 0xf) + 1); 543 } 544 } 545 546 static void ssys_write(void *opaque, hwaddr offset, 547 uint64_t value, unsigned size) 548 { 549 ssys_state *s = (ssys_state *)opaque; 550 551 switch (offset) { 552 case 0x030: /* PBORCTL */ 553 s->pborctl = value & 0xffff; 554 break; 555 case 0x034: /* LDOPCTL */ 556 s->ldopctl = value & 0x1f; 557 break; 558 case 0x040: /* SRCR0 */ 559 case 0x044: /* SRCR1 */ 560 case 0x048: /* SRCR2 */ 561 fprintf(stderr, "Peripheral reset not implemented\n"); 562 break; 563 case 0x054: /* IMC */ 564 s->int_mask = value & 0x7f; 565 break; 566 case 0x058: /* MISC */ 567 s->int_status &= ~value; 568 break; 569 case 0x05c: /* RESC */ 570 s->resc = value & 0x3f; 571 break; 572 case 0x060: /* RCC */ 573 if ((s->rcc & (1 << 13)) != 0 && (value & (1 << 13)) == 0) { 574 /* PLL enable. */ 575 s->int_status |= (1 << 6); 576 } 577 s->rcc = value; 578 ssys_calculate_system_clock(s); 579 break; 580 case 0x070: /* RCC2 */ 581 if (ssys_board_class(s) == DID0_CLASS_SANDSTORM) { 582 break; 583 } 584 585 if ((s->rcc2 & (1 << 13)) != 0 && (value & (1 << 13)) == 0) { 586 /* PLL enable. */ 587 s->int_status |= (1 << 6); 588 } 589 s->rcc2 = value; 590 ssys_calculate_system_clock(s); 591 break; 592 case 0x100: /* RCGC0 */ 593 s->rcgc[0] = value; 594 break; 595 case 0x104: /* RCGC1 */ 596 s->rcgc[1] = value; 597 break; 598 case 0x108: /* RCGC2 */ 599 s->rcgc[2] = value; 600 break; 601 case 0x110: /* SCGC0 */ 602 s->scgc[0] = value; 603 break; 604 case 0x114: /* SCGC1 */ 605 s->scgc[1] = value; 606 break; 607 case 0x118: /* SCGC2 */ 608 s->scgc[2] = value; 609 break; 610 case 0x120: /* DCGC0 */ 611 s->dcgc[0] = value; 612 break; 613 case 0x124: /* DCGC1 */ 614 s->dcgc[1] = value; 615 break; 616 case 0x128: /* DCGC2 */ 617 s->dcgc[2] = value; 618 break; 619 case 0x150: /* CLKVCLR */ 620 s->clkvclr = value; 621 break; 622 case 0x160: /* LDOARST */ 623 s->ldoarst = value; 624 break; 625 default: 626 qemu_log_mask(LOG_GUEST_ERROR, 627 "SSYS: write at bad offset 0x%x\n", (int)offset); 628 } 629 ssys_update(s); 630 } 631 632 static const MemoryRegionOps ssys_ops = { 633 .read = ssys_read, 634 .write = ssys_write, 635 .endianness = DEVICE_NATIVE_ENDIAN, 636 }; 637 638 static void ssys_reset(void *opaque) 639 { 640 ssys_state *s = (ssys_state *)opaque; 641 642 s->pborctl = 0x7ffd; 643 s->rcc = 0x078e3ac0; 644 645 if (ssys_board_class(s) == DID0_CLASS_SANDSTORM) { 646 s->rcc2 = 0; 647 } else { 648 s->rcc2 = 0x07802810; 649 } 650 s->rcgc[0] = 1; 651 s->scgc[0] = 1; 652 s->dcgc[0] = 1; 653 ssys_calculate_system_clock(s); 654 } 655 656 static int stellaris_sys_post_load(void *opaque, int version_id) 657 { 658 ssys_state *s = opaque; 659 660 ssys_calculate_system_clock(s); 661 662 return 0; 663 } 664 665 static const VMStateDescription vmstate_stellaris_sys = { 666 .name = "stellaris_sys", 667 .version_id = 2, 668 .minimum_version_id = 1, 669 .post_load = stellaris_sys_post_load, 670 .fields = (VMStateField[]) { 671 VMSTATE_UINT32(pborctl, ssys_state), 672 VMSTATE_UINT32(ldopctl, ssys_state), 673 VMSTATE_UINT32(int_mask, ssys_state), 674 VMSTATE_UINT32(int_status, ssys_state), 675 VMSTATE_UINT32(resc, ssys_state), 676 VMSTATE_UINT32(rcc, ssys_state), 677 VMSTATE_UINT32_V(rcc2, ssys_state, 2), 678 VMSTATE_UINT32_ARRAY(rcgc, ssys_state, 3), 679 VMSTATE_UINT32_ARRAY(scgc, ssys_state, 3), 680 VMSTATE_UINT32_ARRAY(dcgc, ssys_state, 3), 681 VMSTATE_UINT32(clkvclr, ssys_state), 682 VMSTATE_UINT32(ldoarst, ssys_state), 683 VMSTATE_END_OF_LIST() 684 } 685 }; 686 687 static int stellaris_sys_init(uint32_t base, qemu_irq irq, 688 stellaris_board_info * board, 689 uint8_t *macaddr) 690 { 691 ssys_state *s; 692 693 s = g_new0(ssys_state, 1); 694 s->irq = irq; 695 s->board = board; 696 /* Most devices come preprogrammed with a MAC address in the user data. */ 697 s->user0 = macaddr[0] | (macaddr[1] << 8) | (macaddr[2] << 16); 698 s->user1 = macaddr[3] | (macaddr[4] << 8) | (macaddr[5] << 16); 699 700 memory_region_init_io(&s->iomem, NULL, &ssys_ops, s, "ssys", 0x00001000); 701 memory_region_add_subregion(get_system_memory(), base, &s->iomem); 702 ssys_reset(s); 703 vmstate_register(NULL, -1, &vmstate_stellaris_sys, s); 704 return 0; 705 } 706 707 708 /* I2C controller. */ 709 710 #define TYPE_STELLARIS_I2C "stellaris-i2c" 711 #define STELLARIS_I2C(obj) \ 712 OBJECT_CHECK(stellaris_i2c_state, (obj), TYPE_STELLARIS_I2C) 713 714 typedef struct { 715 SysBusDevice parent_obj; 716 717 I2CBus *bus; 718 qemu_irq irq; 719 MemoryRegion iomem; 720 uint32_t msa; 721 uint32_t mcs; 722 uint32_t mdr; 723 uint32_t mtpr; 724 uint32_t mimr; 725 uint32_t mris; 726 uint32_t mcr; 727 } stellaris_i2c_state; 728 729 #define STELLARIS_I2C_MCS_BUSY 0x01 730 #define STELLARIS_I2C_MCS_ERROR 0x02 731 #define STELLARIS_I2C_MCS_ADRACK 0x04 732 #define STELLARIS_I2C_MCS_DATACK 0x08 733 #define STELLARIS_I2C_MCS_ARBLST 0x10 734 #define STELLARIS_I2C_MCS_IDLE 0x20 735 #define STELLARIS_I2C_MCS_BUSBSY 0x40 736 737 static uint64_t stellaris_i2c_read(void *opaque, hwaddr offset, 738 unsigned size) 739 { 740 stellaris_i2c_state *s = (stellaris_i2c_state *)opaque; 741 742 switch (offset) { 743 case 0x00: /* MSA */ 744 return s->msa; 745 case 0x04: /* MCS */ 746 /* We don't emulate timing, so the controller is never busy. */ 747 return s->mcs | STELLARIS_I2C_MCS_IDLE; 748 case 0x08: /* MDR */ 749 return s->mdr; 750 case 0x0c: /* MTPR */ 751 return s->mtpr; 752 case 0x10: /* MIMR */ 753 return s->mimr; 754 case 0x14: /* MRIS */ 755 return s->mris; 756 case 0x18: /* MMIS */ 757 return s->mris & s->mimr; 758 case 0x20: /* MCR */ 759 return s->mcr; 760 default: 761 qemu_log_mask(LOG_GUEST_ERROR, 762 "stellaris_i2c: read at bad offset 0x%x\n", (int)offset); 763 return 0; 764 } 765 } 766 767 static void stellaris_i2c_update(stellaris_i2c_state *s) 768 { 769 int level; 770 771 level = (s->mris & s->mimr) != 0; 772 qemu_set_irq(s->irq, level); 773 } 774 775 static void stellaris_i2c_write(void *opaque, hwaddr offset, 776 uint64_t value, unsigned size) 777 { 778 stellaris_i2c_state *s = (stellaris_i2c_state *)opaque; 779 780 switch (offset) { 781 case 0x00: /* MSA */ 782 s->msa = value & 0xff; 783 break; 784 case 0x04: /* MCS */ 785 if ((s->mcr & 0x10) == 0) { 786 /* Disabled. Do nothing. */ 787 break; 788 } 789 /* Grab the bus if this is starting a transfer. */ 790 if ((value & 2) && (s->mcs & STELLARIS_I2C_MCS_BUSBSY) == 0) { 791 if (i2c_start_transfer(s->bus, s->msa >> 1, s->msa & 1)) { 792 s->mcs |= STELLARIS_I2C_MCS_ARBLST; 793 } else { 794 s->mcs &= ~STELLARIS_I2C_MCS_ARBLST; 795 s->mcs |= STELLARIS_I2C_MCS_BUSBSY; 796 } 797 } 798 /* If we don't have the bus then indicate an error. */ 799 if (!i2c_bus_busy(s->bus) 800 || (s->mcs & STELLARIS_I2C_MCS_BUSBSY) == 0) { 801 s->mcs |= STELLARIS_I2C_MCS_ERROR; 802 break; 803 } 804 s->mcs &= ~STELLARIS_I2C_MCS_ERROR; 805 if (value & 1) { 806 /* Transfer a byte. */ 807 /* TODO: Handle errors. */ 808 if (s->msa & 1) { 809 /* Recv */ 810 s->mdr = i2c_recv(s->bus) & 0xff; 811 } else { 812 /* Send */ 813 i2c_send(s->bus, s->mdr); 814 } 815 /* Raise an interrupt. */ 816 s->mris |= 1; 817 } 818 if (value & 4) { 819 /* Finish transfer. */ 820 i2c_end_transfer(s->bus); 821 s->mcs &= ~STELLARIS_I2C_MCS_BUSBSY; 822 } 823 break; 824 case 0x08: /* MDR */ 825 s->mdr = value & 0xff; 826 break; 827 case 0x0c: /* MTPR */ 828 s->mtpr = value & 0xff; 829 break; 830 case 0x10: /* MIMR */ 831 s->mimr = 1; 832 break; 833 case 0x1c: /* MICR */ 834 s->mris &= ~value; 835 break; 836 case 0x20: /* MCR */ 837 if (value & 1) { 838 qemu_log_mask(LOG_UNIMP, "stellaris_i2c: Loopback not implemented"); 839 } 840 if (value & 0x20) { 841 qemu_log_mask(LOG_UNIMP, 842 "stellaris_i2c: Slave mode not implemented"); 843 } 844 s->mcr = value & 0x31; 845 break; 846 default: 847 qemu_log_mask(LOG_GUEST_ERROR, 848 "stellaris_i2c: write at bad offset 0x%x\n", (int)offset); 849 } 850 stellaris_i2c_update(s); 851 } 852 853 static void stellaris_i2c_reset(stellaris_i2c_state *s) 854 { 855 if (s->mcs & STELLARIS_I2C_MCS_BUSBSY) 856 i2c_end_transfer(s->bus); 857 858 s->msa = 0; 859 s->mcs = 0; 860 s->mdr = 0; 861 s->mtpr = 1; 862 s->mimr = 0; 863 s->mris = 0; 864 s->mcr = 0; 865 stellaris_i2c_update(s); 866 } 867 868 static const MemoryRegionOps stellaris_i2c_ops = { 869 .read = stellaris_i2c_read, 870 .write = stellaris_i2c_write, 871 .endianness = DEVICE_NATIVE_ENDIAN, 872 }; 873 874 static const VMStateDescription vmstate_stellaris_i2c = { 875 .name = "stellaris_i2c", 876 .version_id = 1, 877 .minimum_version_id = 1, 878 .fields = (VMStateField[]) { 879 VMSTATE_UINT32(msa, stellaris_i2c_state), 880 VMSTATE_UINT32(mcs, stellaris_i2c_state), 881 VMSTATE_UINT32(mdr, stellaris_i2c_state), 882 VMSTATE_UINT32(mtpr, stellaris_i2c_state), 883 VMSTATE_UINT32(mimr, stellaris_i2c_state), 884 VMSTATE_UINT32(mris, stellaris_i2c_state), 885 VMSTATE_UINT32(mcr, stellaris_i2c_state), 886 VMSTATE_END_OF_LIST() 887 } 888 }; 889 890 static void stellaris_i2c_init(Object *obj) 891 { 892 DeviceState *dev = DEVICE(obj); 893 stellaris_i2c_state *s = STELLARIS_I2C(obj); 894 SysBusDevice *sbd = SYS_BUS_DEVICE(obj); 895 I2CBus *bus; 896 897 sysbus_init_irq(sbd, &s->irq); 898 bus = i2c_init_bus(dev, "i2c"); 899 s->bus = bus; 900 901 memory_region_init_io(&s->iomem, obj, &stellaris_i2c_ops, s, 902 "i2c", 0x1000); 903 sysbus_init_mmio(sbd, &s->iomem); 904 /* ??? For now we only implement the master interface. */ 905 stellaris_i2c_reset(s); 906 } 907 908 /* Analogue to Digital Converter. This is only partially implemented, 909 enough for applications that use a combined ADC and timer tick. */ 910 911 #define STELLARIS_ADC_EM_CONTROLLER 0 912 #define STELLARIS_ADC_EM_COMP 1 913 #define STELLARIS_ADC_EM_EXTERNAL 4 914 #define STELLARIS_ADC_EM_TIMER 5 915 #define STELLARIS_ADC_EM_PWM0 6 916 #define STELLARIS_ADC_EM_PWM1 7 917 #define STELLARIS_ADC_EM_PWM2 8 918 919 #define STELLARIS_ADC_FIFO_EMPTY 0x0100 920 #define STELLARIS_ADC_FIFO_FULL 0x1000 921 922 #define TYPE_STELLARIS_ADC "stellaris-adc" 923 #define STELLARIS_ADC(obj) \ 924 OBJECT_CHECK(stellaris_adc_state, (obj), TYPE_STELLARIS_ADC) 925 926 typedef struct StellarisADCState { 927 SysBusDevice parent_obj; 928 929 MemoryRegion iomem; 930 uint32_t actss; 931 uint32_t ris; 932 uint32_t im; 933 uint32_t emux; 934 uint32_t ostat; 935 uint32_t ustat; 936 uint32_t sspri; 937 uint32_t sac; 938 struct { 939 uint32_t state; 940 uint32_t data[16]; 941 } fifo[4]; 942 uint32_t ssmux[4]; 943 uint32_t ssctl[4]; 944 uint32_t noise; 945 qemu_irq irq[4]; 946 } stellaris_adc_state; 947 948 static uint32_t stellaris_adc_fifo_read(stellaris_adc_state *s, int n) 949 { 950 int tail; 951 952 tail = s->fifo[n].state & 0xf; 953 if (s->fifo[n].state & STELLARIS_ADC_FIFO_EMPTY) { 954 s->ustat |= 1 << n; 955 } else { 956 s->fifo[n].state = (s->fifo[n].state & ~0xf) | ((tail + 1) & 0xf); 957 s->fifo[n].state &= ~STELLARIS_ADC_FIFO_FULL; 958 if (tail + 1 == ((s->fifo[n].state >> 4) & 0xf)) 959 s->fifo[n].state |= STELLARIS_ADC_FIFO_EMPTY; 960 } 961 return s->fifo[n].data[tail]; 962 } 963 964 static void stellaris_adc_fifo_write(stellaris_adc_state *s, int n, 965 uint32_t value) 966 { 967 int head; 968 969 /* TODO: Real hardware has limited size FIFOs. We have a full 16 entry 970 FIFO fir each sequencer. */ 971 head = (s->fifo[n].state >> 4) & 0xf; 972 if (s->fifo[n].state & STELLARIS_ADC_FIFO_FULL) { 973 s->ostat |= 1 << n; 974 return; 975 } 976 s->fifo[n].data[head] = value; 977 head = (head + 1) & 0xf; 978 s->fifo[n].state &= ~STELLARIS_ADC_FIFO_EMPTY; 979 s->fifo[n].state = (s->fifo[n].state & ~0xf0) | (head << 4); 980 if ((s->fifo[n].state & 0xf) == head) 981 s->fifo[n].state |= STELLARIS_ADC_FIFO_FULL; 982 } 983 984 static void stellaris_adc_update(stellaris_adc_state *s) 985 { 986 int level; 987 int n; 988 989 for (n = 0; n < 4; n++) { 990 level = (s->ris & s->im & (1 << n)) != 0; 991 qemu_set_irq(s->irq[n], level); 992 } 993 } 994 995 static void stellaris_adc_trigger(void *opaque, int irq, int level) 996 { 997 stellaris_adc_state *s = (stellaris_adc_state *)opaque; 998 int n; 999 1000 for (n = 0; n < 4; n++) { 1001 if ((s->actss & (1 << n)) == 0) { 1002 continue; 1003 } 1004 1005 if (((s->emux >> (n * 4)) & 0xff) != 5) { 1006 continue; 1007 } 1008 1009 /* Some applications use the ADC as a random number source, so introduce 1010 some variation into the signal. */ 1011 s->noise = s->noise * 314159 + 1; 1012 /* ??? actual inputs not implemented. Return an arbitrary value. */ 1013 stellaris_adc_fifo_write(s, n, 0x200 + ((s->noise >> 16) & 7)); 1014 s->ris |= (1 << n); 1015 stellaris_adc_update(s); 1016 } 1017 } 1018 1019 static void stellaris_adc_reset(stellaris_adc_state *s) 1020 { 1021 int n; 1022 1023 for (n = 0; n < 4; n++) { 1024 s->ssmux[n] = 0; 1025 s->ssctl[n] = 0; 1026 s->fifo[n].state = STELLARIS_ADC_FIFO_EMPTY; 1027 } 1028 } 1029 1030 static uint64_t stellaris_adc_read(void *opaque, hwaddr offset, 1031 unsigned size) 1032 { 1033 stellaris_adc_state *s = (stellaris_adc_state *)opaque; 1034 1035 /* TODO: Implement this. */ 1036 if (offset >= 0x40 && offset < 0xc0) { 1037 int n; 1038 n = (offset - 0x40) >> 5; 1039 switch (offset & 0x1f) { 1040 case 0x00: /* SSMUX */ 1041 return s->ssmux[n]; 1042 case 0x04: /* SSCTL */ 1043 return s->ssctl[n]; 1044 case 0x08: /* SSFIFO */ 1045 return stellaris_adc_fifo_read(s, n); 1046 case 0x0c: /* SSFSTAT */ 1047 return s->fifo[n].state; 1048 default: 1049 break; 1050 } 1051 } 1052 switch (offset) { 1053 case 0x00: /* ACTSS */ 1054 return s->actss; 1055 case 0x04: /* RIS */ 1056 return s->ris; 1057 case 0x08: /* IM */ 1058 return s->im; 1059 case 0x0c: /* ISC */ 1060 return s->ris & s->im; 1061 case 0x10: /* OSTAT */ 1062 return s->ostat; 1063 case 0x14: /* EMUX */ 1064 return s->emux; 1065 case 0x18: /* USTAT */ 1066 return s->ustat; 1067 case 0x20: /* SSPRI */ 1068 return s->sspri; 1069 case 0x30: /* SAC */ 1070 return s->sac; 1071 default: 1072 qemu_log_mask(LOG_GUEST_ERROR, 1073 "stellaris_adc: read at bad offset 0x%x\n", (int)offset); 1074 return 0; 1075 } 1076 } 1077 1078 static void stellaris_adc_write(void *opaque, hwaddr offset, 1079 uint64_t value, unsigned size) 1080 { 1081 stellaris_adc_state *s = (stellaris_adc_state *)opaque; 1082 1083 /* TODO: Implement this. */ 1084 if (offset >= 0x40 && offset < 0xc0) { 1085 int n; 1086 n = (offset - 0x40) >> 5; 1087 switch (offset & 0x1f) { 1088 case 0x00: /* SSMUX */ 1089 s->ssmux[n] = value & 0x33333333; 1090 return; 1091 case 0x04: /* SSCTL */ 1092 if (value != 6) { 1093 qemu_log_mask(LOG_UNIMP, 1094 "ADC: Unimplemented sequence %" PRIx64 "\n", 1095 value); 1096 } 1097 s->ssctl[n] = value; 1098 return; 1099 default: 1100 break; 1101 } 1102 } 1103 switch (offset) { 1104 case 0x00: /* ACTSS */ 1105 s->actss = value & 0xf; 1106 break; 1107 case 0x08: /* IM */ 1108 s->im = value; 1109 break; 1110 case 0x0c: /* ISC */ 1111 s->ris &= ~value; 1112 break; 1113 case 0x10: /* OSTAT */ 1114 s->ostat &= ~value; 1115 break; 1116 case 0x14: /* EMUX */ 1117 s->emux = value; 1118 break; 1119 case 0x18: /* USTAT */ 1120 s->ustat &= ~value; 1121 break; 1122 case 0x20: /* SSPRI */ 1123 s->sspri = value; 1124 break; 1125 case 0x28: /* PSSI */ 1126 qemu_log_mask(LOG_UNIMP, "ADC: sample initiate unimplemented"); 1127 break; 1128 case 0x30: /* SAC */ 1129 s->sac = value; 1130 break; 1131 default: 1132 qemu_log_mask(LOG_GUEST_ERROR, 1133 "stellaris_adc: write at bad offset 0x%x\n", (int)offset); 1134 } 1135 stellaris_adc_update(s); 1136 } 1137 1138 static const MemoryRegionOps stellaris_adc_ops = { 1139 .read = stellaris_adc_read, 1140 .write = stellaris_adc_write, 1141 .endianness = DEVICE_NATIVE_ENDIAN, 1142 }; 1143 1144 static const VMStateDescription vmstate_stellaris_adc = { 1145 .name = "stellaris_adc", 1146 .version_id = 1, 1147 .minimum_version_id = 1, 1148 .fields = (VMStateField[]) { 1149 VMSTATE_UINT32(actss, stellaris_adc_state), 1150 VMSTATE_UINT32(ris, stellaris_adc_state), 1151 VMSTATE_UINT32(im, stellaris_adc_state), 1152 VMSTATE_UINT32(emux, stellaris_adc_state), 1153 VMSTATE_UINT32(ostat, stellaris_adc_state), 1154 VMSTATE_UINT32(ustat, stellaris_adc_state), 1155 VMSTATE_UINT32(sspri, stellaris_adc_state), 1156 VMSTATE_UINT32(sac, stellaris_adc_state), 1157 VMSTATE_UINT32(fifo[0].state, stellaris_adc_state), 1158 VMSTATE_UINT32_ARRAY(fifo[0].data, stellaris_adc_state, 16), 1159 VMSTATE_UINT32(ssmux[0], stellaris_adc_state), 1160 VMSTATE_UINT32(ssctl[0], stellaris_adc_state), 1161 VMSTATE_UINT32(fifo[1].state, stellaris_adc_state), 1162 VMSTATE_UINT32_ARRAY(fifo[1].data, stellaris_adc_state, 16), 1163 VMSTATE_UINT32(ssmux[1], stellaris_adc_state), 1164 VMSTATE_UINT32(ssctl[1], stellaris_adc_state), 1165 VMSTATE_UINT32(fifo[2].state, stellaris_adc_state), 1166 VMSTATE_UINT32_ARRAY(fifo[2].data, stellaris_adc_state, 16), 1167 VMSTATE_UINT32(ssmux[2], stellaris_adc_state), 1168 VMSTATE_UINT32(ssctl[2], stellaris_adc_state), 1169 VMSTATE_UINT32(fifo[3].state, stellaris_adc_state), 1170 VMSTATE_UINT32_ARRAY(fifo[3].data, stellaris_adc_state, 16), 1171 VMSTATE_UINT32(ssmux[3], stellaris_adc_state), 1172 VMSTATE_UINT32(ssctl[3], stellaris_adc_state), 1173 VMSTATE_UINT32(noise, stellaris_adc_state), 1174 VMSTATE_END_OF_LIST() 1175 } 1176 }; 1177 1178 static void stellaris_adc_init(Object *obj) 1179 { 1180 DeviceState *dev = DEVICE(obj); 1181 stellaris_adc_state *s = STELLARIS_ADC(obj); 1182 SysBusDevice *sbd = SYS_BUS_DEVICE(obj); 1183 int n; 1184 1185 for (n = 0; n < 4; n++) { 1186 sysbus_init_irq(sbd, &s->irq[n]); 1187 } 1188 1189 memory_region_init_io(&s->iomem, obj, &stellaris_adc_ops, s, 1190 "adc", 0x1000); 1191 sysbus_init_mmio(sbd, &s->iomem); 1192 stellaris_adc_reset(s); 1193 qdev_init_gpio_in(dev, stellaris_adc_trigger, 1); 1194 } 1195 1196 static 1197 void do_sys_reset(void *opaque, int n, int level) 1198 { 1199 if (level) { 1200 qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET); 1201 } 1202 } 1203 1204 /* Board init. */ 1205 static stellaris_board_info stellaris_boards[] = { 1206 { "LM3S811EVB", 1207 0, 1208 0x0032000e, 1209 0x001f001f, /* dc0 */ 1210 0x001132bf, 1211 0x01071013, 1212 0x3f0f01ff, 1213 0x0000001f, 1214 BP_OLED_I2C 1215 }, 1216 { "LM3S6965EVB", 1217 0x10010002, 1218 0x1073402e, 1219 0x00ff007f, /* dc0 */ 1220 0x001133ff, 1221 0x030f5317, 1222 0x0f0f87ff, 1223 0x5000007f, 1224 BP_OLED_SSI | BP_GAMEPAD 1225 } 1226 }; 1227 1228 static void stellaris_init(const char *kernel_filename, const char *cpu_model, 1229 stellaris_board_info *board) 1230 { 1231 static const int uart_irq[] = {5, 6, 33, 34}; 1232 static const int timer_irq[] = {19, 21, 23, 35}; 1233 static const uint32_t gpio_addr[7] = 1234 { 0x40004000, 0x40005000, 0x40006000, 0x40007000, 1235 0x40024000, 0x40025000, 0x40026000}; 1236 static const int gpio_irq[7] = {0, 1, 2, 3, 4, 30, 31}; 1237 1238 /* Memory map of SoC devices, from 1239 * Stellaris LM3S6965 Microcontroller Data Sheet (rev I) 1240 * http://www.ti.com/lit/ds/symlink/lm3s6965.pdf 1241 * 1242 * 40000000 wdtimer (unimplemented) 1243 * 40002000 i2c (unimplemented) 1244 * 40004000 GPIO 1245 * 40005000 GPIO 1246 * 40006000 GPIO 1247 * 40007000 GPIO 1248 * 40008000 SSI 1249 * 4000c000 UART 1250 * 4000d000 UART 1251 * 4000e000 UART 1252 * 40020000 i2c 1253 * 40021000 i2c (unimplemented) 1254 * 40024000 GPIO 1255 * 40025000 GPIO 1256 * 40026000 GPIO 1257 * 40028000 PWM (unimplemented) 1258 * 4002c000 QEI (unimplemented) 1259 * 4002d000 QEI (unimplemented) 1260 * 40030000 gptimer 1261 * 40031000 gptimer 1262 * 40032000 gptimer 1263 * 40033000 gptimer 1264 * 40038000 ADC 1265 * 4003c000 analogue comparator (unimplemented) 1266 * 40048000 ethernet 1267 * 400fc000 hibernation module (unimplemented) 1268 * 400fd000 flash memory control (unimplemented) 1269 * 400fe000 system control 1270 */ 1271 1272 DeviceState *gpio_dev[7], *nvic; 1273 qemu_irq gpio_in[7][8]; 1274 qemu_irq gpio_out[7][8]; 1275 qemu_irq adc; 1276 int sram_size; 1277 int flash_size; 1278 I2CBus *i2c; 1279 DeviceState *dev; 1280 int i; 1281 int j; 1282 1283 MemoryRegion *sram = g_new(MemoryRegion, 1); 1284 MemoryRegion *flash = g_new(MemoryRegion, 1); 1285 MemoryRegion *system_memory = get_system_memory(); 1286 1287 flash_size = (((board->dc0 & 0xffff) + 1) << 1) * 1024; 1288 sram_size = ((board->dc0 >> 18) + 1) * 1024; 1289 1290 /* Flash programming is done via the SCU, so pretend it is ROM. */ 1291 memory_region_init_ram(flash, NULL, "stellaris.flash", flash_size, 1292 &error_fatal); 1293 vmstate_register_ram_global(flash); 1294 memory_region_set_readonly(flash, true); 1295 memory_region_add_subregion(system_memory, 0, flash); 1296 1297 memory_region_init_ram(sram, NULL, "stellaris.sram", sram_size, 1298 &error_fatal); 1299 vmstate_register_ram_global(sram); 1300 memory_region_add_subregion(system_memory, 0x20000000, sram); 1301 1302 nvic = armv7m_init(system_memory, flash_size, NUM_IRQ_LINES, 1303 kernel_filename, cpu_model); 1304 1305 qdev_connect_gpio_out_named(nvic, "SYSRESETREQ", 0, 1306 qemu_allocate_irq(&do_sys_reset, NULL, 0)); 1307 1308 if (board->dc1 & (1 << 16)) { 1309 dev = sysbus_create_varargs(TYPE_STELLARIS_ADC, 0x40038000, 1310 qdev_get_gpio_in(nvic, 14), 1311 qdev_get_gpio_in(nvic, 15), 1312 qdev_get_gpio_in(nvic, 16), 1313 qdev_get_gpio_in(nvic, 17), 1314 NULL); 1315 adc = qdev_get_gpio_in(dev, 0); 1316 } else { 1317 adc = NULL; 1318 } 1319 for (i = 0; i < 4; i++) { 1320 if (board->dc2 & (0x10000 << i)) { 1321 dev = sysbus_create_simple(TYPE_STELLARIS_GPTM, 1322 0x40030000 + i * 0x1000, 1323 qdev_get_gpio_in(nvic, timer_irq[i])); 1324 /* TODO: This is incorrect, but we get away with it because 1325 the ADC output is only ever pulsed. */ 1326 qdev_connect_gpio_out(dev, 0, adc); 1327 } 1328 } 1329 1330 stellaris_sys_init(0x400fe000, qdev_get_gpio_in(nvic, 28), 1331 board, nd_table[0].macaddr.a); 1332 1333 for (i = 0; i < 7; i++) { 1334 if (board->dc4 & (1 << i)) { 1335 gpio_dev[i] = sysbus_create_simple("pl061_luminary", gpio_addr[i], 1336 qdev_get_gpio_in(nvic, 1337 gpio_irq[i])); 1338 for (j = 0; j < 8; j++) { 1339 gpio_in[i][j] = qdev_get_gpio_in(gpio_dev[i], j); 1340 gpio_out[i][j] = NULL; 1341 } 1342 } 1343 } 1344 1345 if (board->dc2 & (1 << 12)) { 1346 dev = sysbus_create_simple(TYPE_STELLARIS_I2C, 0x40020000, 1347 qdev_get_gpio_in(nvic, 8)); 1348 i2c = (I2CBus *)qdev_get_child_bus(dev, "i2c"); 1349 if (board->peripherals & BP_OLED_I2C) { 1350 i2c_create_slave(i2c, "ssd0303", 0x3d); 1351 } 1352 } 1353 1354 for (i = 0; i < 4; i++) { 1355 if (board->dc2 & (1 << i)) { 1356 pl011_luminary_create(0x4000c000 + i * 0x1000, 1357 qdev_get_gpio_in(nvic, uart_irq[i]), 1358 serial_hds[i]); 1359 } 1360 } 1361 if (board->dc2 & (1 << 4)) { 1362 dev = sysbus_create_simple("pl022", 0x40008000, 1363 qdev_get_gpio_in(nvic, 7)); 1364 if (board->peripherals & BP_OLED_SSI) { 1365 void *bus; 1366 DeviceState *sddev; 1367 DeviceState *ssddev; 1368 1369 /* Some boards have both an OLED controller and SD card connected to 1370 * the same SSI port, with the SD card chip select connected to a 1371 * GPIO pin. Technically the OLED chip select is connected to the 1372 * SSI Fss pin. We do not bother emulating that as both devices 1373 * should never be selected simultaneously, and our OLED controller 1374 * ignores stray 0xff commands that occur when deselecting the SD 1375 * card. 1376 */ 1377 bus = qdev_get_child_bus(dev, "ssi"); 1378 1379 sddev = ssi_create_slave(bus, "ssi-sd"); 1380 ssddev = ssi_create_slave(bus, "ssd0323"); 1381 gpio_out[GPIO_D][0] = qemu_irq_split( 1382 qdev_get_gpio_in_named(sddev, SSI_GPIO_CS, 0), 1383 qdev_get_gpio_in_named(ssddev, SSI_GPIO_CS, 0)); 1384 gpio_out[GPIO_C][7] = qdev_get_gpio_in(ssddev, 0); 1385 1386 /* Make sure the select pin is high. */ 1387 qemu_irq_raise(gpio_out[GPIO_D][0]); 1388 } 1389 } 1390 if (board->dc4 & (1 << 28)) { 1391 DeviceState *enet; 1392 1393 qemu_check_nic_model(&nd_table[0], "stellaris"); 1394 1395 enet = qdev_create(NULL, "stellaris_enet"); 1396 qdev_set_nic_properties(enet, &nd_table[0]); 1397 qdev_init_nofail(enet); 1398 sysbus_mmio_map(SYS_BUS_DEVICE(enet), 0, 0x40048000); 1399 sysbus_connect_irq(SYS_BUS_DEVICE(enet), 0, qdev_get_gpio_in(nvic, 42)); 1400 } 1401 if (board->peripherals & BP_GAMEPAD) { 1402 qemu_irq gpad_irq[5]; 1403 static const int gpad_keycode[5] = { 0xc8, 0xd0, 0xcb, 0xcd, 0x1d }; 1404 1405 gpad_irq[0] = qemu_irq_invert(gpio_in[GPIO_E][0]); /* up */ 1406 gpad_irq[1] = qemu_irq_invert(gpio_in[GPIO_E][1]); /* down */ 1407 gpad_irq[2] = qemu_irq_invert(gpio_in[GPIO_E][2]); /* left */ 1408 gpad_irq[3] = qemu_irq_invert(gpio_in[GPIO_E][3]); /* right */ 1409 gpad_irq[4] = qemu_irq_invert(gpio_in[GPIO_F][1]); /* select */ 1410 1411 stellaris_gamepad_init(5, gpad_irq, gpad_keycode); 1412 } 1413 for (i = 0; i < 7; i++) { 1414 if (board->dc4 & (1 << i)) { 1415 for (j = 0; j < 8; j++) { 1416 if (gpio_out[i][j]) { 1417 qdev_connect_gpio_out(gpio_dev[i], j, gpio_out[i][j]); 1418 } 1419 } 1420 } 1421 } 1422 1423 /* Add dummy regions for the devices we don't implement yet, 1424 * so guest accesses don't cause unlogged crashes. 1425 */ 1426 create_unimplemented_device("wdtimer", 0x40000000, 0x1000); 1427 create_unimplemented_device("i2c-0", 0x40002000, 0x1000); 1428 create_unimplemented_device("i2c-2", 0x40021000, 0x1000); 1429 create_unimplemented_device("PWM", 0x40028000, 0x1000); 1430 create_unimplemented_device("QEI-0", 0x4002c000, 0x1000); 1431 create_unimplemented_device("QEI-1", 0x4002d000, 0x1000); 1432 create_unimplemented_device("analogue-comparator", 0x4003c000, 0x1000); 1433 create_unimplemented_device("hibernation", 0x400fc000, 0x1000); 1434 create_unimplemented_device("flash-control", 0x400fd000, 0x1000); 1435 } 1436 1437 /* FIXME: Figure out how to generate these from stellaris_boards. */ 1438 static void lm3s811evb_init(MachineState *machine) 1439 { 1440 const char *cpu_model = machine->cpu_model; 1441 const char *kernel_filename = machine->kernel_filename; 1442 stellaris_init(kernel_filename, cpu_model, &stellaris_boards[0]); 1443 } 1444 1445 static void lm3s6965evb_init(MachineState *machine) 1446 { 1447 const char *cpu_model = machine->cpu_model; 1448 const char *kernel_filename = machine->kernel_filename; 1449 stellaris_init(kernel_filename, cpu_model, &stellaris_boards[1]); 1450 } 1451 1452 static void lm3s811evb_class_init(ObjectClass *oc, void *data) 1453 { 1454 MachineClass *mc = MACHINE_CLASS(oc); 1455 1456 mc->desc = "Stellaris LM3S811EVB"; 1457 mc->init = lm3s811evb_init; 1458 } 1459 1460 static const TypeInfo lm3s811evb_type = { 1461 .name = MACHINE_TYPE_NAME("lm3s811evb"), 1462 .parent = TYPE_MACHINE, 1463 .class_init = lm3s811evb_class_init, 1464 }; 1465 1466 static void lm3s6965evb_class_init(ObjectClass *oc, void *data) 1467 { 1468 MachineClass *mc = MACHINE_CLASS(oc); 1469 1470 mc->desc = "Stellaris LM3S6965EVB"; 1471 mc->init = lm3s6965evb_init; 1472 } 1473 1474 static const TypeInfo lm3s6965evb_type = { 1475 .name = MACHINE_TYPE_NAME("lm3s6965evb"), 1476 .parent = TYPE_MACHINE, 1477 .class_init = lm3s6965evb_class_init, 1478 }; 1479 1480 static void stellaris_machine_init(void) 1481 { 1482 type_register_static(&lm3s811evb_type); 1483 type_register_static(&lm3s6965evb_type); 1484 } 1485 1486 type_init(stellaris_machine_init) 1487 1488 static void stellaris_i2c_class_init(ObjectClass *klass, void *data) 1489 { 1490 DeviceClass *dc = DEVICE_CLASS(klass); 1491 1492 dc->vmsd = &vmstate_stellaris_i2c; 1493 } 1494 1495 static const TypeInfo stellaris_i2c_info = { 1496 .name = TYPE_STELLARIS_I2C, 1497 .parent = TYPE_SYS_BUS_DEVICE, 1498 .instance_size = sizeof(stellaris_i2c_state), 1499 .instance_init = stellaris_i2c_init, 1500 .class_init = stellaris_i2c_class_init, 1501 }; 1502 1503 static void stellaris_gptm_class_init(ObjectClass *klass, void *data) 1504 { 1505 DeviceClass *dc = DEVICE_CLASS(klass); 1506 1507 dc->vmsd = &vmstate_stellaris_gptm; 1508 } 1509 1510 static const TypeInfo stellaris_gptm_info = { 1511 .name = TYPE_STELLARIS_GPTM, 1512 .parent = TYPE_SYS_BUS_DEVICE, 1513 .instance_size = sizeof(gptm_state), 1514 .instance_init = stellaris_gptm_init, 1515 .class_init = stellaris_gptm_class_init, 1516 }; 1517 1518 static void stellaris_adc_class_init(ObjectClass *klass, void *data) 1519 { 1520 DeviceClass *dc = DEVICE_CLASS(klass); 1521 1522 dc->vmsd = &vmstate_stellaris_adc; 1523 } 1524 1525 static const TypeInfo stellaris_adc_info = { 1526 .name = TYPE_STELLARIS_ADC, 1527 .parent = TYPE_SYS_BUS_DEVICE, 1528 .instance_size = sizeof(stellaris_adc_state), 1529 .instance_init = stellaris_adc_init, 1530 .class_init = stellaris_adc_class_init, 1531 }; 1532 1533 static void stellaris_register_types(void) 1534 { 1535 type_register_static(&stellaris_i2c_info); 1536 type_register_static(&stellaris_gptm_info); 1537 type_register_static(&stellaris_adc_info); 1538 } 1539 1540 type_init(stellaris_register_types) 1541