2 * Luminary Micro Stellaris peripherals
4 * Copyright (c) 2006 CodeSourcery.
5 * Written by Paul Brook
7 * This code is licensed under the GPL.
14 #include "qemu-timer.h"
18 #include "exec/address-spaces.h"
28 #define BP_OLED_I2C 0x01
29 #define BP_OLED_SSI 0x02
30 #define BP_GAMEPAD 0x04
32 typedef const struct {
42 } stellaris_board_info;
44 /* General purpose timer module. */
46 typedef struct gptm_state {
57 uint32_t match_prescale[2];
60 struct gptm_state *opaque[2];
62 /* The timers have an alternate output used to trigger the ADC. */
67 static void gptm_update_irq(gptm_state *s)
70 level = (s->state & s->mask) != 0;
71 qemu_set_irq(s->irq, level);
74 static void gptm_stop(gptm_state *s, int n)
76 qemu_del_timer(s->timer[n]);
79 static void gptm_reload(gptm_state *s, int n, int reset)
83 tick = qemu_get_clock_ns(vm_clock);
88 /* 32-bit CountDown. */
90 count = s->load[0] | (s->load[1] << 16);
91 tick += (int64_t)count * system_clock_scale;
92 } else if (s->config == 1) {
93 /* 32-bit RTC. 1Hz tick. */
94 tick += get_ticks_per_sec();
95 } else if (s->mode[n] == 0xa) {
96 /* PWM mode. Not implemented. */
98 hw_error("TODO: 16-bit timer mode 0x%x\n", s->mode[n]);
101 qemu_mod_timer(s->timer[n], tick);
104 static void gptm_tick(void *opaque)
106 gptm_state **p = (gptm_state **)opaque;
112 if (s->config == 0) {
114 if ((s->control & 0x20)) {
115 /* Output trigger. */
116 qemu_irq_pulse(s->trigger);
118 if (s->mode[0] & 1) {
123 gptm_reload(s, 0, 0);
125 } else if (s->config == 1) {
129 match = s->match[0] | (s->match[1] << 16);
135 gptm_reload(s, 0, 0);
136 } else if (s->mode[n] == 0xa) {
137 /* PWM mode. Not implemented. */
139 hw_error("TODO: 16-bit timer mode 0x%x\n", s->mode[n]);
144 static uint64_t gptm_read(void *opaque, hwaddr offset,
147 gptm_state *s = (gptm_state *)opaque;
152 case 0x04: /* TAMR */
154 case 0x08: /* TBMR */
163 return s->state & s->mask;
166 case 0x28: /* TAILR */
167 return s->load[0] | ((s->config < 4) ? (s->load[1] << 16) : 0);
168 case 0x2c: /* TBILR */
170 case 0x30: /* TAMARCHR */
171 return s->match[0] | ((s->config < 4) ? (s->match[1] << 16) : 0);
172 case 0x34: /* TBMATCHR */
174 case 0x38: /* TAPR */
175 return s->prescale[0];
176 case 0x3c: /* TBPR */
177 return s->prescale[1];
178 case 0x40: /* TAPMR */
179 return s->match_prescale[0];
180 case 0x44: /* TBPMR */
181 return s->match_prescale[1];
186 hw_error("TODO: Timer value read\n");
188 hw_error("gptm_read: Bad offset 0x%x\n", (int)offset);
193 static void gptm_write(void *opaque, hwaddr offset,
194 uint64_t value, unsigned size)
196 gptm_state *s = (gptm_state *)opaque;
199 /* The timers should be disabled before changing the configuration.
200 We take advantage of this and defer everything until the timer
206 case 0x04: /* TAMR */
209 case 0x08: /* TBMR */
215 /* TODO: Implement pause. */
216 if ((oldval ^ value) & 1) {
218 gptm_reload(s, 0, 1);
223 if (((oldval ^ value) & 0x100) && s->config >= 4) {
225 gptm_reload(s, 1, 1);
232 s->mask = value & 0x77;
238 case 0x28: /* TAILR */
239 s->load[0] = value & 0xffff;
241 s->load[1] = value >> 16;
244 case 0x2c: /* TBILR */
245 s->load[1] = value & 0xffff;
247 case 0x30: /* TAMARCHR */
248 s->match[0] = value & 0xffff;
250 s->match[1] = value >> 16;
253 case 0x34: /* TBMATCHR */
254 s->match[1] = value >> 16;
256 case 0x38: /* TAPR */
257 s->prescale[0] = value;
259 case 0x3c: /* TBPR */
260 s->prescale[1] = value;
262 case 0x40: /* TAPMR */
263 s->match_prescale[0] = value;
265 case 0x44: /* TBPMR */
266 s->match_prescale[0] = value;
269 hw_error("gptm_write: Bad offset 0x%x\n", (int)offset);
274 static const MemoryRegionOps gptm_ops = {
277 .endianness = DEVICE_NATIVE_ENDIAN,
280 static const VMStateDescription vmstate_stellaris_gptm = {
281 .name = "stellaris_gptm",
283 .minimum_version_id = 1,
284 .minimum_version_id_old = 1,
285 .fields = (VMStateField[]) {
286 VMSTATE_UINT32(config, gptm_state),
287 VMSTATE_UINT32_ARRAY(mode, gptm_state, 2),
288 VMSTATE_UINT32(control, gptm_state),
289 VMSTATE_UINT32(state, gptm_state),
290 VMSTATE_UINT32(mask, gptm_state),
292 VMSTATE_UINT32_ARRAY(load, gptm_state, 2),
293 VMSTATE_UINT32_ARRAY(match, gptm_state, 2),
294 VMSTATE_UINT32_ARRAY(prescale, gptm_state, 2),
295 VMSTATE_UINT32_ARRAY(match_prescale, gptm_state, 2),
296 VMSTATE_UINT32(rtc, gptm_state),
297 VMSTATE_INT64_ARRAY(tick, gptm_state, 2),
298 VMSTATE_TIMER_ARRAY(timer, gptm_state, 2),
299 VMSTATE_END_OF_LIST()
303 static int stellaris_gptm_init(SysBusDevice *dev)
305 gptm_state *s = FROM_SYSBUS(gptm_state, dev);
307 sysbus_init_irq(dev, &s->irq);
308 qdev_init_gpio_out(&dev->qdev, &s->trigger, 1);
310 memory_region_init_io(&s->iomem, &gptm_ops, s,
312 sysbus_init_mmio(dev, &s->iomem);
314 s->opaque[0] = s->opaque[1] = s;
315 s->timer[0] = qemu_new_timer_ns(vm_clock, gptm_tick, &s->opaque[0]);
316 s->timer[1] = qemu_new_timer_ns(vm_clock, gptm_tick, &s->opaque[1]);
317 vmstate_register(&dev->qdev, -1, &vmstate_stellaris_gptm, s);
322 /* System controller. */
341 stellaris_board_info *board;
344 static void ssys_update(ssys_state *s)
346 qemu_set_irq(s->irq, (s->int_status & s->int_mask) != 0);
349 static uint32_t pllcfg_sandstorm[16] = {
351 0x1ae0, /* 1.8432 Mhz */
353 0xd573, /* 2.4576 Mhz */
354 0x37a6, /* 3.57954 Mhz */
355 0x1ae2, /* 3.6864 Mhz */
357 0x98bc, /* 4.906 Mhz */
358 0x935b, /* 4.9152 Mhz */
360 0x4dee, /* 5.12 Mhz */
362 0x75db, /* 6.144 Mhz */
363 0x1ae6, /* 7.3728 Mhz */
365 0x585b /* 8.192 Mhz */
368 static uint32_t pllcfg_fury[16] = {
370 0x1b20, /* 1.8432 Mhz */
372 0xf42b, /* 2.4576 Mhz */
373 0x37e3, /* 3.57954 Mhz */
374 0x1b21, /* 3.6864 Mhz */
376 0x98ee, /* 4.906 Mhz */
377 0xd5b4, /* 4.9152 Mhz */
379 0x4e27, /* 5.12 Mhz */
381 0xec1c, /* 6.144 Mhz */
382 0x1b23, /* 7.3728 Mhz */
384 0xb11c /* 8.192 Mhz */
387 #define DID0_VER_MASK 0x70000000
388 #define DID0_VER_0 0x00000000
389 #define DID0_VER_1 0x10000000
391 #define DID0_CLASS_MASK 0x00FF0000
392 #define DID0_CLASS_SANDSTORM 0x00000000
393 #define DID0_CLASS_FURY 0x00010000
395 static int ssys_board_class(const ssys_state *s)
397 uint32_t did0 = s->board->did0;
398 switch (did0 & DID0_VER_MASK) {
400 return DID0_CLASS_SANDSTORM;
402 switch (did0 & DID0_CLASS_MASK) {
403 case DID0_CLASS_SANDSTORM:
404 case DID0_CLASS_FURY:
405 return did0 & DID0_CLASS_MASK;
407 /* for unknown classes, fall through */
409 hw_error("ssys_board_class: Unknown class 0x%08x\n", did0);
413 static uint64_t ssys_read(void *opaque, hwaddr offset,
416 ssys_state *s = (ssys_state *)opaque;
419 case 0x000: /* DID0 */
420 return s->board->did0;
421 case 0x004: /* DID1 */
422 return s->board->did1;
423 case 0x008: /* DC0 */
424 return s->board->dc0;
425 case 0x010: /* DC1 */
426 return s->board->dc1;
427 case 0x014: /* DC2 */
428 return s->board->dc2;
429 case 0x018: /* DC3 */
430 return s->board->dc3;
431 case 0x01c: /* DC4 */
432 return s->board->dc4;
433 case 0x030: /* PBORCTL */
435 case 0x034: /* LDOPCTL */
437 case 0x040: /* SRCR0 */
439 case 0x044: /* SRCR1 */
441 case 0x048: /* SRCR2 */
443 case 0x050: /* RIS */
444 return s->int_status;
445 case 0x054: /* IMC */
447 case 0x058: /* MISC */
448 return s->int_status & s->int_mask;
449 case 0x05c: /* RESC */
451 case 0x060: /* RCC */
453 case 0x064: /* PLLCFG */
456 xtal = (s->rcc >> 6) & 0xf;
457 switch (ssys_board_class(s)) {
458 case DID0_CLASS_FURY:
459 return pllcfg_fury[xtal];
460 case DID0_CLASS_SANDSTORM:
461 return pllcfg_sandstorm[xtal];
463 hw_error("ssys_read: Unhandled class for PLLCFG read.\n");
467 case 0x070: /* RCC2 */
469 case 0x100: /* RCGC0 */
471 case 0x104: /* RCGC1 */
473 case 0x108: /* RCGC2 */
475 case 0x110: /* SCGC0 */
477 case 0x114: /* SCGC1 */
479 case 0x118: /* SCGC2 */
481 case 0x120: /* DCGC0 */
483 case 0x124: /* DCGC1 */
485 case 0x128: /* DCGC2 */
487 case 0x150: /* CLKVCLR */
489 case 0x160: /* LDOARST */
491 case 0x1e0: /* USER0 */
493 case 0x1e4: /* USER1 */
496 hw_error("ssys_read: Bad offset 0x%x\n", (int)offset);
501 static bool ssys_use_rcc2(ssys_state *s)
503 return (s->rcc2 >> 31) & 0x1;
507 * Caculate the sys. clock period in ms.
509 static void ssys_calculate_system_clock(ssys_state *s)
511 if (ssys_use_rcc2(s)) {
512 system_clock_scale = 5 * (((s->rcc2 >> 23) & 0x3f) + 1);
514 system_clock_scale = 5 * (((s->rcc >> 23) & 0xf) + 1);
518 static void ssys_write(void *opaque, hwaddr offset,
519 uint64_t value, unsigned size)
521 ssys_state *s = (ssys_state *)opaque;
524 case 0x030: /* PBORCTL */
525 s->pborctl = value & 0xffff;
527 case 0x034: /* LDOPCTL */
528 s->ldopctl = value & 0x1f;
530 case 0x040: /* SRCR0 */
531 case 0x044: /* SRCR1 */
532 case 0x048: /* SRCR2 */
533 fprintf(stderr, "Peripheral reset not implemented\n");
535 case 0x054: /* IMC */
536 s->int_mask = value & 0x7f;
538 case 0x058: /* MISC */
539 s->int_status &= ~value;
541 case 0x05c: /* RESC */
542 s->resc = value & 0x3f;
544 case 0x060: /* RCC */
545 if ((s->rcc & (1 << 13)) != 0 && (value & (1 << 13)) == 0) {
547 s->int_status |= (1 << 6);
550 ssys_calculate_system_clock(s);
552 case 0x070: /* RCC2 */
553 if (ssys_board_class(s) == DID0_CLASS_SANDSTORM) {
557 if ((s->rcc2 & (1 << 13)) != 0 && (value & (1 << 13)) == 0) {
559 s->int_status |= (1 << 6);
562 ssys_calculate_system_clock(s);
564 case 0x100: /* RCGC0 */
567 case 0x104: /* RCGC1 */
570 case 0x108: /* RCGC2 */
573 case 0x110: /* SCGC0 */
576 case 0x114: /* SCGC1 */
579 case 0x118: /* SCGC2 */
582 case 0x120: /* DCGC0 */
585 case 0x124: /* DCGC1 */
588 case 0x128: /* DCGC2 */
591 case 0x150: /* CLKVCLR */
594 case 0x160: /* LDOARST */
598 hw_error("ssys_write: Bad offset 0x%x\n", (int)offset);
603 static const MemoryRegionOps ssys_ops = {
606 .endianness = DEVICE_NATIVE_ENDIAN,
609 static void ssys_reset(void *opaque)
611 ssys_state *s = (ssys_state *)opaque;
616 if (ssys_board_class(s) == DID0_CLASS_SANDSTORM) {
619 s->rcc2 = 0x07802810;
624 ssys_calculate_system_clock(s);
627 static int stellaris_sys_post_load(void *opaque, int version_id)
629 ssys_state *s = opaque;
631 ssys_calculate_system_clock(s);
636 static const VMStateDescription vmstate_stellaris_sys = {
637 .name = "stellaris_sys",
639 .minimum_version_id = 1,
640 .minimum_version_id_old = 1,
641 .post_load = stellaris_sys_post_load,
642 .fields = (VMStateField[]) {
643 VMSTATE_UINT32(pborctl, ssys_state),
644 VMSTATE_UINT32(ldopctl, ssys_state),
645 VMSTATE_UINT32(int_mask, ssys_state),
646 VMSTATE_UINT32(int_status, ssys_state),
647 VMSTATE_UINT32(resc, ssys_state),
648 VMSTATE_UINT32(rcc, ssys_state),
649 VMSTATE_UINT32_V(rcc2, ssys_state, 2),
650 VMSTATE_UINT32_ARRAY(rcgc, ssys_state, 3),
651 VMSTATE_UINT32_ARRAY(scgc, ssys_state, 3),
652 VMSTATE_UINT32_ARRAY(dcgc, ssys_state, 3),
653 VMSTATE_UINT32(clkvclr, ssys_state),
654 VMSTATE_UINT32(ldoarst, ssys_state),
655 VMSTATE_END_OF_LIST()
659 static int stellaris_sys_init(uint32_t base, qemu_irq irq,
660 stellaris_board_info * board,
665 s = (ssys_state *)g_malloc0(sizeof(ssys_state));
668 /* Most devices come preprogrammed with a MAC address in the user data. */
669 s->user0 = macaddr[0] | (macaddr[1] << 8) | (macaddr[2] << 16);
670 s->user1 = macaddr[3] | (macaddr[4] << 8) | (macaddr[5] << 16);
672 memory_region_init_io(&s->iomem, &ssys_ops, s, "ssys", 0x00001000);
673 memory_region_add_subregion(get_system_memory(), base, &s->iomem);
675 vmstate_register(NULL, -1, &vmstate_stellaris_sys, s);
680 /* I2C controller. */
694 } stellaris_i2c_state;
696 #define STELLARIS_I2C_MCS_BUSY 0x01
697 #define STELLARIS_I2C_MCS_ERROR 0x02
698 #define STELLARIS_I2C_MCS_ADRACK 0x04
699 #define STELLARIS_I2C_MCS_DATACK 0x08
700 #define STELLARIS_I2C_MCS_ARBLST 0x10
701 #define STELLARIS_I2C_MCS_IDLE 0x20
702 #define STELLARIS_I2C_MCS_BUSBSY 0x40
704 static uint64_t stellaris_i2c_read(void *opaque, hwaddr offset,
707 stellaris_i2c_state *s = (stellaris_i2c_state *)opaque;
713 /* We don't emulate timing, so the controller is never busy. */
714 return s->mcs | STELLARIS_I2C_MCS_IDLE;
717 case 0x0c: /* MTPR */
719 case 0x10: /* MIMR */
721 case 0x14: /* MRIS */
723 case 0x18: /* MMIS */
724 return s->mris & s->mimr;
728 hw_error("strllaris_i2c_read: Bad offset 0x%x\n", (int)offset);
733 static void stellaris_i2c_update(stellaris_i2c_state *s)
737 level = (s->mris & s->mimr) != 0;
738 qemu_set_irq(s->irq, level);
741 static void stellaris_i2c_write(void *opaque, hwaddr offset,
742 uint64_t value, unsigned size)
744 stellaris_i2c_state *s = (stellaris_i2c_state *)opaque;
748 s->msa = value & 0xff;
751 if ((s->mcr & 0x10) == 0) {
752 /* Disabled. Do nothing. */
755 /* Grab the bus if this is starting a transfer. */
756 if ((value & 2) && (s->mcs & STELLARIS_I2C_MCS_BUSBSY) == 0) {
757 if (i2c_start_transfer(s->bus, s->msa >> 1, s->msa & 1)) {
758 s->mcs |= STELLARIS_I2C_MCS_ARBLST;
760 s->mcs &= ~STELLARIS_I2C_MCS_ARBLST;
761 s->mcs |= STELLARIS_I2C_MCS_BUSBSY;
764 /* If we don't have the bus then indicate an error. */
765 if (!i2c_bus_busy(s->bus)
766 || (s->mcs & STELLARIS_I2C_MCS_BUSBSY) == 0) {
767 s->mcs |= STELLARIS_I2C_MCS_ERROR;
770 s->mcs &= ~STELLARIS_I2C_MCS_ERROR;
772 /* Transfer a byte. */
773 /* TODO: Handle errors. */
776 s->mdr = i2c_recv(s->bus) & 0xff;
779 i2c_send(s->bus, s->mdr);
781 /* Raise an interrupt. */
785 /* Finish transfer. */
786 i2c_end_transfer(s->bus);
787 s->mcs &= ~STELLARIS_I2C_MCS_BUSBSY;
791 s->mdr = value & 0xff;
793 case 0x0c: /* MTPR */
794 s->mtpr = value & 0xff;
796 case 0x10: /* MIMR */
799 case 0x1c: /* MICR */
805 "stellaris_i2c_write: Loopback not implemented\n");
808 "stellaris_i2c_write: Slave mode not implemented\n");
809 s->mcr = value & 0x31;
812 hw_error("stellaris_i2c_write: Bad offset 0x%x\n",
815 stellaris_i2c_update(s);
818 static void stellaris_i2c_reset(stellaris_i2c_state *s)
820 if (s->mcs & STELLARIS_I2C_MCS_BUSBSY)
821 i2c_end_transfer(s->bus);
830 stellaris_i2c_update(s);
833 static const MemoryRegionOps stellaris_i2c_ops = {
834 .read = stellaris_i2c_read,
835 .write = stellaris_i2c_write,
836 .endianness = DEVICE_NATIVE_ENDIAN,
839 static const VMStateDescription vmstate_stellaris_i2c = {
840 .name = "stellaris_i2c",
842 .minimum_version_id = 1,
843 .minimum_version_id_old = 1,
844 .fields = (VMStateField[]) {
845 VMSTATE_UINT32(msa, stellaris_i2c_state),
846 VMSTATE_UINT32(mcs, stellaris_i2c_state),
847 VMSTATE_UINT32(mdr, stellaris_i2c_state),
848 VMSTATE_UINT32(mtpr, stellaris_i2c_state),
849 VMSTATE_UINT32(mimr, stellaris_i2c_state),
850 VMSTATE_UINT32(mris, stellaris_i2c_state),
851 VMSTATE_UINT32(mcr, stellaris_i2c_state),
852 VMSTATE_END_OF_LIST()
856 static int stellaris_i2c_init(SysBusDevice * dev)
858 stellaris_i2c_state *s = FROM_SYSBUS(stellaris_i2c_state, dev);
861 sysbus_init_irq(dev, &s->irq);
862 bus = i2c_init_bus(&dev->qdev, "i2c");
865 memory_region_init_io(&s->iomem, &stellaris_i2c_ops, s,
867 sysbus_init_mmio(dev, &s->iomem);
868 /* ??? For now we only implement the master interface. */
869 stellaris_i2c_reset(s);
870 vmstate_register(&dev->qdev, -1, &vmstate_stellaris_i2c, s);
874 /* Analogue to Digital Converter. This is only partially implemented,
875 enough for applications that use a combined ADC and timer tick. */
877 #define STELLARIS_ADC_EM_CONTROLLER 0
878 #define STELLARIS_ADC_EM_COMP 1
879 #define STELLARIS_ADC_EM_EXTERNAL 4
880 #define STELLARIS_ADC_EM_TIMER 5
881 #define STELLARIS_ADC_EM_PWM0 6
882 #define STELLARIS_ADC_EM_PWM1 7
883 #define STELLARIS_ADC_EM_PWM2 8
885 #define STELLARIS_ADC_FIFO_EMPTY 0x0100
886 #define STELLARIS_ADC_FIFO_FULL 0x1000
908 } stellaris_adc_state;
910 static uint32_t stellaris_adc_fifo_read(stellaris_adc_state *s, int n)
914 tail = s->fifo[n].state & 0xf;
915 if (s->fifo[n].state & STELLARIS_ADC_FIFO_EMPTY) {
918 s->fifo[n].state = (s->fifo[n].state & ~0xf) | ((tail + 1) & 0xf);
919 s->fifo[n].state &= ~STELLARIS_ADC_FIFO_FULL;
920 if (tail + 1 == ((s->fifo[n].state >> 4) & 0xf))
921 s->fifo[n].state |= STELLARIS_ADC_FIFO_EMPTY;
923 return s->fifo[n].data[tail];
926 static void stellaris_adc_fifo_write(stellaris_adc_state *s, int n,
931 /* TODO: Real hardware has limited size FIFOs. We have a full 16 entry
932 FIFO fir each sequencer. */
933 head = (s->fifo[n].state >> 4) & 0xf;
934 if (s->fifo[n].state & STELLARIS_ADC_FIFO_FULL) {
938 s->fifo[n].data[head] = value;
939 head = (head + 1) & 0xf;
940 s->fifo[n].state &= ~STELLARIS_ADC_FIFO_EMPTY;
941 s->fifo[n].state = (s->fifo[n].state & ~0xf0) | (head << 4);
942 if ((s->fifo[n].state & 0xf) == head)
943 s->fifo[n].state |= STELLARIS_ADC_FIFO_FULL;
946 static void stellaris_adc_update(stellaris_adc_state *s)
951 for (n = 0; n < 4; n++) {
952 level = (s->ris & s->im & (1 << n)) != 0;
953 qemu_set_irq(s->irq[n], level);
957 static void stellaris_adc_trigger(void *opaque, int irq, int level)
959 stellaris_adc_state *s = (stellaris_adc_state *)opaque;
962 for (n = 0; n < 4; n++) {
963 if ((s->actss & (1 << n)) == 0) {
967 if (((s->emux >> (n * 4)) & 0xff) != 5) {
971 /* Some applications use the ADC as a random number source, so introduce
972 some variation into the signal. */
973 s->noise = s->noise * 314159 + 1;
974 /* ??? actual inputs not implemented. Return an arbitrary value. */
975 stellaris_adc_fifo_write(s, n, 0x200 + ((s->noise >> 16) & 7));
977 stellaris_adc_update(s);
981 static void stellaris_adc_reset(stellaris_adc_state *s)
985 for (n = 0; n < 4; n++) {
988 s->fifo[n].state = STELLARIS_ADC_FIFO_EMPTY;
992 static uint64_t stellaris_adc_read(void *opaque, hwaddr offset,
995 stellaris_adc_state *s = (stellaris_adc_state *)opaque;
997 /* TODO: Implement this. */
998 if (offset >= 0x40 && offset < 0xc0) {
1000 n = (offset - 0x40) >> 5;
1001 switch (offset & 0x1f) {
1002 case 0x00: /* SSMUX */
1004 case 0x04: /* SSCTL */
1006 case 0x08: /* SSFIFO */
1007 return stellaris_adc_fifo_read(s, n);
1008 case 0x0c: /* SSFSTAT */
1009 return s->fifo[n].state;
1015 case 0x00: /* ACTSS */
1017 case 0x04: /* RIS */
1021 case 0x0c: /* ISC */
1022 return s->ris & s->im;
1023 case 0x10: /* OSTAT */
1025 case 0x14: /* EMUX */
1027 case 0x18: /* USTAT */
1029 case 0x20: /* SSPRI */
1031 case 0x30: /* SAC */
1034 hw_error("strllaris_adc_read: Bad offset 0x%x\n",
1040 static void stellaris_adc_write(void *opaque, hwaddr offset,
1041 uint64_t value, unsigned size)
1043 stellaris_adc_state *s = (stellaris_adc_state *)opaque;
1045 /* TODO: Implement this. */
1046 if (offset >= 0x40 && offset < 0xc0) {
1048 n = (offset - 0x40) >> 5;
1049 switch (offset & 0x1f) {
1050 case 0x00: /* SSMUX */
1051 s->ssmux[n] = value & 0x33333333;
1053 case 0x04: /* SSCTL */
1055 hw_error("ADC: Unimplemented sequence %" PRIx64 "\n",
1058 s->ssctl[n] = value;
1065 case 0x00: /* ACTSS */
1066 s->actss = value & 0xf;
1071 case 0x0c: /* ISC */
1074 case 0x10: /* OSTAT */
1077 case 0x14: /* EMUX */
1080 case 0x18: /* USTAT */
1083 case 0x20: /* SSPRI */
1086 case 0x28: /* PSSI */
1087 hw_error("Not implemented: ADC sample initiate\n");
1089 case 0x30: /* SAC */
1093 hw_error("stellaris_adc_write: Bad offset 0x%x\n", (int)offset);
1095 stellaris_adc_update(s);
1098 static const MemoryRegionOps stellaris_adc_ops = {
1099 .read = stellaris_adc_read,
1100 .write = stellaris_adc_write,
1101 .endianness = DEVICE_NATIVE_ENDIAN,
1104 static const VMStateDescription vmstate_stellaris_adc = {
1105 .name = "stellaris_adc",
1107 .minimum_version_id = 1,
1108 .minimum_version_id_old = 1,
1109 .fields = (VMStateField[]) {
1110 VMSTATE_UINT32(actss, stellaris_adc_state),
1111 VMSTATE_UINT32(ris, stellaris_adc_state),
1112 VMSTATE_UINT32(im, stellaris_adc_state),
1113 VMSTATE_UINT32(emux, stellaris_adc_state),
1114 VMSTATE_UINT32(ostat, stellaris_adc_state),
1115 VMSTATE_UINT32(ustat, stellaris_adc_state),
1116 VMSTATE_UINT32(sspri, stellaris_adc_state),
1117 VMSTATE_UINT32(sac, stellaris_adc_state),
1118 VMSTATE_UINT32(fifo[0].state, stellaris_adc_state),
1119 VMSTATE_UINT32_ARRAY(fifo[0].data, stellaris_adc_state, 16),
1120 VMSTATE_UINT32(ssmux[0], stellaris_adc_state),
1121 VMSTATE_UINT32(ssctl[0], stellaris_adc_state),
1122 VMSTATE_UINT32(fifo[1].state, stellaris_adc_state),
1123 VMSTATE_UINT32_ARRAY(fifo[1].data, stellaris_adc_state, 16),
1124 VMSTATE_UINT32(ssmux[1], stellaris_adc_state),
1125 VMSTATE_UINT32(ssctl[1], stellaris_adc_state),
1126 VMSTATE_UINT32(fifo[2].state, stellaris_adc_state),
1127 VMSTATE_UINT32_ARRAY(fifo[2].data, stellaris_adc_state, 16),
1128 VMSTATE_UINT32(ssmux[2], stellaris_adc_state),
1129 VMSTATE_UINT32(ssctl[2], stellaris_adc_state),
1130 VMSTATE_UINT32(fifo[3].state, stellaris_adc_state),
1131 VMSTATE_UINT32_ARRAY(fifo[3].data, stellaris_adc_state, 16),
1132 VMSTATE_UINT32(ssmux[3], stellaris_adc_state),
1133 VMSTATE_UINT32(ssctl[3], stellaris_adc_state),
1134 VMSTATE_UINT32(noise, stellaris_adc_state),
1135 VMSTATE_END_OF_LIST()
1139 static int stellaris_adc_init(SysBusDevice *dev)
1141 stellaris_adc_state *s = FROM_SYSBUS(stellaris_adc_state, dev);
1144 for (n = 0; n < 4; n++) {
1145 sysbus_init_irq(dev, &s->irq[n]);
1148 memory_region_init_io(&s->iomem, &stellaris_adc_ops, s,
1150 sysbus_init_mmio(dev, &s->iomem);
1151 stellaris_adc_reset(s);
1152 qdev_init_gpio_in(&dev->qdev, stellaris_adc_trigger, 1);
1153 vmstate_register(&dev->qdev, -1, &vmstate_stellaris_adc, s);
1158 static stellaris_board_info stellaris_boards[] = {
1162 0x001f001f, /* dc0 */
1172 0x00ff007f, /* dc0 */
1177 BP_OLED_SSI | BP_GAMEPAD
1181 static void stellaris_init(const char *kernel_filename, const char *cpu_model,
1182 stellaris_board_info *board)
1184 static const int uart_irq[] = {5, 6, 33, 34};
1185 static const int timer_irq[] = {19, 21, 23, 35};
1186 static const uint32_t gpio_addr[7] =
1187 { 0x40004000, 0x40005000, 0x40006000, 0x40007000,
1188 0x40024000, 0x40025000, 0x40026000};
1189 static const int gpio_irq[7] = {0, 1, 2, 3, 4, 30, 31};
1191 MemoryRegion *address_space_mem = get_system_memory();
1193 DeviceState *gpio_dev[7];
1194 qemu_irq gpio_in[7][8];
1195 qemu_irq gpio_out[7][8];
1204 flash_size = ((board->dc0 & 0xffff) + 1) << 1;
1205 sram_size = (board->dc0 >> 18) + 1;
1206 pic = armv7m_init(address_space_mem,
1207 flash_size, sram_size, kernel_filename, cpu_model);
1209 if (board->dc1 & (1 << 16)) {
1210 dev = sysbus_create_varargs("stellaris-adc", 0x40038000,
1211 pic[14], pic[15], pic[16], pic[17], NULL);
1212 adc = qdev_get_gpio_in(dev, 0);
1216 for (i = 0; i < 4; i++) {
1217 if (board->dc2 & (0x10000 << i)) {
1218 dev = sysbus_create_simple("stellaris-gptm",
1219 0x40030000 + i * 0x1000,
1221 /* TODO: This is incorrect, but we get away with it because
1222 the ADC output is only ever pulsed. */
1223 qdev_connect_gpio_out(dev, 0, adc);
1227 stellaris_sys_init(0x400fe000, pic[28], board, nd_table[0].macaddr.a);
1229 for (i = 0; i < 7; i++) {
1230 if (board->dc4 & (1 << i)) {
1231 gpio_dev[i] = sysbus_create_simple("pl061_luminary", gpio_addr[i],
1233 for (j = 0; j < 8; j++) {
1234 gpio_in[i][j] = qdev_get_gpio_in(gpio_dev[i], j);
1235 gpio_out[i][j] = NULL;
1240 if (board->dc2 & (1 << 12)) {
1241 dev = sysbus_create_simple("stellaris-i2c", 0x40020000, pic[8]);
1242 i2c = (i2c_bus *)qdev_get_child_bus(dev, "i2c");
1243 if (board->peripherals & BP_OLED_I2C) {
1244 i2c_create_slave(i2c, "ssd0303", 0x3d);
1248 for (i = 0; i < 4; i++) {
1249 if (board->dc2 & (1 << i)) {
1250 sysbus_create_simple("pl011_luminary", 0x4000c000 + i * 0x1000,
1254 if (board->dc2 & (1 << 4)) {
1255 dev = sysbus_create_simple("pl022", 0x40008000, pic[7]);
1256 if (board->peripherals & BP_OLED_SSI) {
1259 DeviceState *ssddev;
1261 /* Some boards have both an OLED controller and SD card connected to
1262 * the same SSI port, with the SD card chip select connected to a
1263 * GPIO pin. Technically the OLED chip select is connected to the
1264 * SSI Fss pin. We do not bother emulating that as both devices
1265 * should never be selected simultaneously, and our OLED controller
1266 * ignores stray 0xff commands that occur when deselecting the SD
1269 bus = qdev_get_child_bus(dev, "ssi");
1271 sddev = ssi_create_slave(bus, "ssi-sd");
1272 ssddev = ssi_create_slave(bus, "ssd0323");
1273 gpio_out[GPIO_D][0] = qemu_irq_split(qdev_get_gpio_in(sddev, 0),
1274 qdev_get_gpio_in(ssddev, 0));
1275 gpio_out[GPIO_C][7] = qdev_get_gpio_in(ssddev, 1);
1277 /* Make sure the select pin is high. */
1278 qemu_irq_raise(gpio_out[GPIO_D][0]);
1281 if (board->dc4 & (1 << 28)) {
1284 qemu_check_nic_model(&nd_table[0], "stellaris");
1286 enet = qdev_create(NULL, "stellaris_enet");
1287 qdev_set_nic_properties(enet, &nd_table[0]);
1288 qdev_init_nofail(enet);
1289 sysbus_mmio_map(sysbus_from_qdev(enet), 0, 0x40048000);
1290 sysbus_connect_irq(sysbus_from_qdev(enet), 0, pic[42]);
1292 if (board->peripherals & BP_GAMEPAD) {
1293 qemu_irq gpad_irq[5];
1294 static const int gpad_keycode[5] = { 0xc8, 0xd0, 0xcb, 0xcd, 0x1d };
1296 gpad_irq[0] = qemu_irq_invert(gpio_in[GPIO_E][0]); /* up */
1297 gpad_irq[1] = qemu_irq_invert(gpio_in[GPIO_E][1]); /* down */
1298 gpad_irq[2] = qemu_irq_invert(gpio_in[GPIO_E][2]); /* left */
1299 gpad_irq[3] = qemu_irq_invert(gpio_in[GPIO_E][3]); /* right */
1300 gpad_irq[4] = qemu_irq_invert(gpio_in[GPIO_F][1]); /* select */
1302 stellaris_gamepad_init(5, gpad_irq, gpad_keycode);
1304 for (i = 0; i < 7; i++) {
1305 if (board->dc4 & (1 << i)) {
1306 for (j = 0; j < 8; j++) {
1307 if (gpio_out[i][j]) {
1308 qdev_connect_gpio_out(gpio_dev[i], j, gpio_out[i][j]);
1315 /* FIXME: Figure out how to generate these from stellaris_boards. */
1316 static void lm3s811evb_init(QEMUMachineInitArgs *args)
1318 const char *cpu_model = args->cpu_model;
1319 const char *kernel_filename = args->kernel_filename;
1320 stellaris_init(kernel_filename, cpu_model, &stellaris_boards[0]);
1323 static void lm3s6965evb_init(QEMUMachineInitArgs *args)
1325 const char *cpu_model = args->cpu_model;
1326 const char *kernel_filename = args->kernel_filename;
1327 stellaris_init(kernel_filename, cpu_model, &stellaris_boards[1]);
1330 static QEMUMachine lm3s811evb_machine = {
1331 .name = "lm3s811evb",
1332 .desc = "Stellaris LM3S811EVB",
1333 .init = lm3s811evb_init,
1336 static QEMUMachine lm3s6965evb_machine = {
1337 .name = "lm3s6965evb",
1338 .desc = "Stellaris LM3S6965EVB",
1339 .init = lm3s6965evb_init,
1342 static void stellaris_machine_init(void)
1344 qemu_register_machine(&lm3s811evb_machine);
1345 qemu_register_machine(&lm3s6965evb_machine);
1348 machine_init(stellaris_machine_init);
1350 static void stellaris_i2c_class_init(ObjectClass *klass, void *data)
1352 SysBusDeviceClass *sdc = SYS_BUS_DEVICE_CLASS(klass);
1354 sdc->init = stellaris_i2c_init;
1357 static TypeInfo stellaris_i2c_info = {
1358 .name = "stellaris-i2c",
1359 .parent = TYPE_SYS_BUS_DEVICE,
1360 .instance_size = sizeof(stellaris_i2c_state),
1361 .class_init = stellaris_i2c_class_init,
1364 static void stellaris_gptm_class_init(ObjectClass *klass, void *data)
1366 SysBusDeviceClass *sdc = SYS_BUS_DEVICE_CLASS(klass);
1368 sdc->init = stellaris_gptm_init;
1371 static TypeInfo stellaris_gptm_info = {
1372 .name = "stellaris-gptm",
1373 .parent = TYPE_SYS_BUS_DEVICE,
1374 .instance_size = sizeof(gptm_state),
1375 .class_init = stellaris_gptm_class_init,
1378 static void stellaris_adc_class_init(ObjectClass *klass, void *data)
1380 SysBusDeviceClass *sdc = SYS_BUS_DEVICE_CLASS(klass);
1382 sdc->init = stellaris_adc_init;
1385 static TypeInfo stellaris_adc_info = {
1386 .name = "stellaris-adc",
1387 .parent = TYPE_SYS_BUS_DEVICE,
1388 .instance_size = sizeof(stellaris_adc_state),
1389 .class_init = stellaris_adc_class_init,
1392 static void stellaris_register_types(void)
1394 type_register_static(&stellaris_i2c_info);
1395 type_register_static(&stellaris_gptm_info);
1396 type_register_static(&stellaris_adc_info);
1399 type_init(stellaris_register_types)