2 * ARM Integrator CP System emulation.
4 * Copyright (c) 2005-2007 CodeSourcery.
5 * Written by Paul Brook
7 * This code is licensed under the GPL
11 #include "primecell.h"
16 #include "exec-memory.h"
37 static uint8_t integrator_spd[128] = {
38 128, 8, 4, 11, 9, 1, 64, 0, 2, 0xa0, 0xa0, 0, 0, 8, 0, 1,
39 0xe, 4, 0x1c, 1, 2, 0x20, 0xc0, 0, 0, 0, 0, 0x30, 0x28, 0x30, 0x28, 0x40
42 static uint64_t integratorcm_read(void *opaque, target_phys_addr_t offset,
45 integratorcm_state *s = (integratorcm_state *)opaque;
46 if (offset >= 0x100 && offset < 0x200) {
50 return integrator_spd[offset >> 2];
52 switch (offset >> 2) {
64 if (s->cm_lock == 0xa05f) {
69 case 6: /* CM_LMBUSCNT */
70 /* ??? High frequency timer. */
71 hw_error("integratorcm_read: CM_LMBUSCNT");
72 case 7: /* CM_AUXOSC */
74 case 8: /* CM_SDRAM */
78 case 10: /* CM_REFCT */
79 /* ??? High frequency timer. */
80 hw_error("integratorcm_read: CM_REFCT");
81 case 12: /* CM_FLAGS */
83 case 14: /* CM_NVFLAGS */
85 case 16: /* CM_IRQ_STAT */
86 return s->int_level & s->irq_enabled;
87 case 17: /* CM_IRQ_RSTAT */
89 case 18: /* CM_IRQ_ENSET */
90 return s->irq_enabled;
91 case 20: /* CM_SOFT_INTSET */
92 return s->int_level & 1;
93 case 24: /* CM_FIQ_STAT */
94 return s->int_level & s->fiq_enabled;
95 case 25: /* CM_FIQ_RSTAT */
97 case 26: /* CM_FIQ_ENSET */
98 return s->fiq_enabled;
99 case 32: /* CM_VOLTAGE_CTL0 */
100 case 33: /* CM_VOLTAGE_CTL1 */
101 case 34: /* CM_VOLTAGE_CTL2 */
102 case 35: /* CM_VOLTAGE_CTL3 */
103 /* ??? Voltage control unimplemented. */
106 hw_error("integratorcm_read: Unimplemented offset 0x%x\n",
112 static void integratorcm_do_remap(integratorcm_state *s)
114 /* Sync memory region state with CM_CTRL REMAP bit:
115 * bit 0 => flash at address 0; bit 1 => RAM
117 memory_region_set_enabled(&s->flash, !(s->cm_ctrl & 4));
120 static void integratorcm_set_ctrl(integratorcm_state *s, uint32_t value)
123 qemu_system_reset_request();
125 if ((s->cm_ctrl ^ value) & 1) {
126 /* (value & 1) != 0 means the green "MISC LED" is lit.
127 * We don't have any nice place to display LEDs. printf is a bad
128 * idea because Linux uses the LED as a heartbeat and the output
129 * will swamp anything else on the terminal.
132 /* Note that the RESET bit [3] always reads as zero */
133 s->cm_ctrl = (s->cm_ctrl & ~5) | (value & 5);
134 integratorcm_do_remap(s);
137 static void integratorcm_update(integratorcm_state *s)
139 /* ??? The CPU irq/fiq is raised when either the core module or base PIC
141 if (s->int_level & (s->irq_enabled | s->fiq_enabled))
142 hw_error("Core module interrupt\n");
145 static void integratorcm_write(void *opaque, target_phys_addr_t offset,
146 uint64_t value, unsigned size)
148 integratorcm_state *s = (integratorcm_state *)opaque;
149 switch (offset >> 2) {
151 if (s->cm_lock == 0xa05f)
154 case 3: /* CM_CTRL */
155 integratorcm_set_ctrl(s, value);
157 case 5: /* CM_LOCK */
158 s->cm_lock = value & 0xffff;
160 case 7: /* CM_AUXOSC */
161 if (s->cm_lock == 0xa05f)
162 s->cm_auxosc = value;
164 case 8: /* CM_SDRAM */
167 case 9: /* CM_INIT */
168 /* ??? This can change the memory bus frequency. */
171 case 12: /* CM_FLAGSS */
172 s->cm_flags |= value;
174 case 13: /* CM_FLAGSC */
175 s->cm_flags &= ~value;
177 case 14: /* CM_NVFLAGSS */
178 s->cm_nvflags |= value;
180 case 15: /* CM_NVFLAGSS */
181 s->cm_nvflags &= ~value;
183 case 18: /* CM_IRQ_ENSET */
184 s->irq_enabled |= value;
185 integratorcm_update(s);
187 case 19: /* CM_IRQ_ENCLR */
188 s->irq_enabled &= ~value;
189 integratorcm_update(s);
191 case 20: /* CM_SOFT_INTSET */
192 s->int_level |= (value & 1);
193 integratorcm_update(s);
195 case 21: /* CM_SOFT_INTCLR */
196 s->int_level &= ~(value & 1);
197 integratorcm_update(s);
199 case 26: /* CM_FIQ_ENSET */
200 s->fiq_enabled |= value;
201 integratorcm_update(s);
203 case 27: /* CM_FIQ_ENCLR */
204 s->fiq_enabled &= ~value;
205 integratorcm_update(s);
207 case 32: /* CM_VOLTAGE_CTL0 */
208 case 33: /* CM_VOLTAGE_CTL1 */
209 case 34: /* CM_VOLTAGE_CTL2 */
210 case 35: /* CM_VOLTAGE_CTL3 */
211 /* ??? Voltage control unimplemented. */
214 hw_error("integratorcm_write: Unimplemented offset 0x%x\n",
220 /* Integrator/CM control registers. */
222 static const MemoryRegionOps integratorcm_ops = {
223 .read = integratorcm_read,
224 .write = integratorcm_write,
225 .endianness = DEVICE_NATIVE_ENDIAN,
228 static int integratorcm_init(SysBusDevice *dev)
230 integratorcm_state *s = FROM_SYSBUS(integratorcm_state, dev);
232 s->cm_osc = 0x01000048;
233 /* ??? What should the high bits of this value be? */
234 s->cm_auxosc = 0x0007feff;
235 s->cm_sdram = 0x00011122;
236 if (s->memsz >= 256) {
237 integrator_spd[31] = 64;
239 } else if (s->memsz >= 128) {
240 integrator_spd[31] = 32;
242 } else if (s->memsz >= 64) {
243 integrator_spd[31] = 16;
245 } else if (s->memsz >= 32) {
246 integrator_spd[31] = 4;
249 integrator_spd[31] = 2;
251 memcpy(integrator_spd + 73, "QEMU-MEMORY", 11);
252 s->cm_init = 0x00000112;
253 memory_region_init_ram(&s->flash, "integrator.flash", 0x100000);
254 vmstate_register_ram_global(&s->flash);
256 memory_region_init_io(&s->iomem, &integratorcm_ops, s,
257 "integratorcm", 0x00800000);
258 sysbus_init_mmio(dev, &s->iomem);
260 integratorcm_do_remap(s);
261 /* ??? Save/restore. */
265 /* Integrator/CP hardware emulation. */
266 /* Primary interrupt controller. */
268 typedef struct icp_pic_state
273 uint32_t irq_enabled;
274 uint32_t fiq_enabled;
279 static void icp_pic_update(icp_pic_state *s)
283 flags = (s->level & s->irq_enabled);
284 qemu_set_irq(s->parent_irq, flags != 0);
285 flags = (s->level & s->fiq_enabled);
286 qemu_set_irq(s->parent_fiq, flags != 0);
289 static void icp_pic_set_irq(void *opaque, int irq, int level)
291 icp_pic_state *s = (icp_pic_state *)opaque;
293 s->level |= 1 << irq;
295 s->level &= ~(1 << irq);
299 static uint64_t icp_pic_read(void *opaque, target_phys_addr_t offset,
302 icp_pic_state *s = (icp_pic_state *)opaque;
304 switch (offset >> 2) {
305 case 0: /* IRQ_STATUS */
306 return s->level & s->irq_enabled;
307 case 1: /* IRQ_RAWSTAT */
309 case 2: /* IRQ_ENABLESET */
310 return s->irq_enabled;
311 case 4: /* INT_SOFTSET */
313 case 8: /* FRQ_STATUS */
314 return s->level & s->fiq_enabled;
315 case 9: /* FRQ_RAWSTAT */
317 case 10: /* FRQ_ENABLESET */
318 return s->fiq_enabled;
319 case 3: /* IRQ_ENABLECLR */
320 case 5: /* INT_SOFTCLR */
321 case 11: /* FRQ_ENABLECLR */
323 printf ("icp_pic_read: Bad register offset 0x%x\n", (int)offset);
328 static void icp_pic_write(void *opaque, target_phys_addr_t offset,
329 uint64_t value, unsigned size)
331 icp_pic_state *s = (icp_pic_state *)opaque;
333 switch (offset >> 2) {
334 case 2: /* IRQ_ENABLESET */
335 s->irq_enabled |= value;
337 case 3: /* IRQ_ENABLECLR */
338 s->irq_enabled &= ~value;
340 case 4: /* INT_SOFTSET */
342 icp_pic_set_irq(s, 0, 1);
344 case 5: /* INT_SOFTCLR */
346 icp_pic_set_irq(s, 0, 0);
348 case 10: /* FRQ_ENABLESET */
349 s->fiq_enabled |= value;
351 case 11: /* FRQ_ENABLECLR */
352 s->fiq_enabled &= ~value;
354 case 0: /* IRQ_STATUS */
355 case 1: /* IRQ_RAWSTAT */
356 case 8: /* FRQ_STATUS */
357 case 9: /* FRQ_RAWSTAT */
359 printf ("icp_pic_write: Bad register offset 0x%x\n", (int)offset);
365 static const MemoryRegionOps icp_pic_ops = {
366 .read = icp_pic_read,
367 .write = icp_pic_write,
368 .endianness = DEVICE_NATIVE_ENDIAN,
371 static int icp_pic_init(SysBusDevice *dev)
373 icp_pic_state *s = FROM_SYSBUS(icp_pic_state, dev);
375 qdev_init_gpio_in(&dev->qdev, icp_pic_set_irq, 32);
376 sysbus_init_irq(dev, &s->parent_irq);
377 sysbus_init_irq(dev, &s->parent_fiq);
378 memory_region_init_io(&s->iomem, &icp_pic_ops, s, "icp-pic", 0x00800000);
379 sysbus_init_mmio(dev, &s->iomem);
383 /* CP control registers. */
385 static uint64_t icp_control_read(void *opaque, target_phys_addr_t offset,
388 switch (offset >> 2) {
389 case 0: /* CP_IDFIELD */
391 case 1: /* CP_FLASHPROG */
393 case 2: /* CP_INTREG */
395 case 3: /* CP_DECODE */
398 hw_error("icp_control_read: Bad offset %x\n", (int)offset);
403 static void icp_control_write(void *opaque, target_phys_addr_t offset,
404 uint64_t value, unsigned size)
406 switch (offset >> 2) {
407 case 1: /* CP_FLASHPROG */
408 case 2: /* CP_INTREG */
409 case 3: /* CP_DECODE */
410 /* Nothing interesting implemented yet. */
413 hw_error("icp_control_write: Bad offset %x\n", (int)offset);
417 static const MemoryRegionOps icp_control_ops = {
418 .read = icp_control_read,
419 .write = icp_control_write,
420 .endianness = DEVICE_NATIVE_ENDIAN,
423 static void icp_control_init(target_phys_addr_t base)
427 io = (MemoryRegion *)g_malloc0(sizeof(MemoryRegion));
428 memory_region_init_io(io, &icp_control_ops, NULL,
429 "control", 0x00800000);
430 memory_region_add_subregion(get_system_memory(), base, io);
431 /* ??? Save/restore. */
437 static struct arm_boot_info integrator_binfo = {
442 static void integratorcp_init(ram_addr_t ram_size,
443 const char *boot_device,
444 const char *kernel_filename, const char *kernel_cmdline,
445 const char *initrd_filename, const char *cpu_model)
448 MemoryRegion *address_space_mem = get_system_memory();
449 MemoryRegion *ram = g_new(MemoryRegion, 1);
450 MemoryRegion *ram_alias = g_new(MemoryRegion, 1);
457 cpu_model = "arm926";
458 env = cpu_init(cpu_model);
460 fprintf(stderr, "Unable to find CPU definition\n");
463 memory_region_init_ram(ram, "integrator.ram", ram_size);
464 vmstate_register_ram_global(ram);
465 /* ??? On a real system the first 1Mb is mapped as SSRAM or boot flash. */
466 /* ??? RAM should repeat to fill physical memory space. */
467 /* SDRAM at address zero*/
468 memory_region_add_subregion(address_space_mem, 0, ram);
469 /* And again at address 0x80000000 */
470 memory_region_init_alias(ram_alias, "ram.alias", ram, 0, ram_size);
471 memory_region_add_subregion(address_space_mem, 0x80000000, ram_alias);
473 dev = qdev_create(NULL, "integrator_core");
474 qdev_prop_set_uint32(dev, "memsz", ram_size >> 20);
475 qdev_init_nofail(dev);
476 sysbus_mmio_map((SysBusDevice *)dev, 0, 0x10000000);
478 cpu_pic = arm_pic_init_cpu(env);
479 dev = sysbus_create_varargs("integrator_pic", 0x14000000,
480 cpu_pic[ARM_PIC_CPU_IRQ],
481 cpu_pic[ARM_PIC_CPU_FIQ], NULL);
482 for (i = 0; i < 32; i++) {
483 pic[i] = qdev_get_gpio_in(dev, i);
485 sysbus_create_simple("integrator_pic", 0xca000000, pic[26]);
486 sysbus_create_varargs("integrator_pit", 0x13000000,
487 pic[5], pic[6], pic[7], NULL);
488 sysbus_create_simple("pl031", 0x15000000, pic[8]);
489 sysbus_create_simple("pl011", 0x16000000, pic[1]);
490 sysbus_create_simple("pl011", 0x17000000, pic[2]);
491 icp_control_init(0xcb000000);
492 sysbus_create_simple("pl050_keyboard", 0x18000000, pic[3]);
493 sysbus_create_simple("pl050_mouse", 0x19000000, pic[4]);
494 sysbus_create_varargs("pl181", 0x1c000000, pic[23], pic[24], NULL);
495 if (nd_table[0].vlan)
496 smc91c111_init(&nd_table[0], 0xc8000000, pic[27]);
498 sysbus_create_simple("pl110", 0xc0000000, pic[22]);
500 integrator_binfo.ram_size = ram_size;
501 integrator_binfo.kernel_filename = kernel_filename;
502 integrator_binfo.kernel_cmdline = kernel_cmdline;
503 integrator_binfo.initrd_filename = initrd_filename;
504 arm_load_kernel(env, &integrator_binfo);
507 static QEMUMachine integratorcp_machine = {
508 .name = "integratorcp",
509 .desc = "ARM Integrator/CP (ARM926EJ-S)",
510 .init = integratorcp_init,
514 static void integratorcp_machine_init(void)
516 qemu_register_machine(&integratorcp_machine);
519 machine_init(integratorcp_machine_init);
521 static Property core_properties[] = {
522 DEFINE_PROP_UINT32("memsz", integratorcm_state, memsz, 0),
523 DEFINE_PROP_END_OF_LIST(),
526 static void core_class_init(ObjectClass *klass, void *data)
528 DeviceClass *dc = DEVICE_CLASS(klass);
529 SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
531 k->init = integratorcm_init;
532 dc->props = core_properties;
535 static TypeInfo core_info = {
536 .name = "integrator_core",
537 .parent = TYPE_SYS_BUS_DEVICE,
538 .instance_size = sizeof(integratorcm_state),
539 .class_init = core_class_init,
542 static void icp_pic_class_init(ObjectClass *klass, void *data)
544 SysBusDeviceClass *sdc = SYS_BUS_DEVICE_CLASS(klass);
546 sdc->init = icp_pic_init;
549 static TypeInfo icp_pic_info = {
550 .name = "integrator_pic",
551 .parent = TYPE_SYS_BUS_DEVICE,
552 .instance_size = sizeof(icp_pic_state),
553 .class_init = icp_pic_class_init,
556 static void integratorcp_register_types(void)
558 type_register_static(&icp_pic_info);
559 type_register_static(&core_info);
562 type_init(integratorcp_register_types)