2 * ARM Integrator CP System emulation.
4 * Copyright (c) 2005-2007 CodeSourcery.
5 * Written by Paul Brook
7 * This code is licenced under the GPL
11 #include "primecell.h"
20 uint32_t flash_offset;
34 static uint8_t integrator_spd[128] = {
35 128, 8, 4, 11, 9, 1, 64, 0, 2, 0xa0, 0xa0, 0, 0, 8, 0, 1,
36 0xe, 4, 0x1c, 1, 2, 0x20, 0xc0, 0, 0, 0, 0, 0x30, 0x28, 0x30, 0x28, 0x40
39 static uint32_t integratorcm_read(void *opaque, target_phys_addr_t offset)
41 integratorcm_state *s = (integratorcm_state *)opaque;
42 if (offset >= 0x100 && offset < 0x200) {
46 return integrator_spd[offset >> 2];
48 switch (offset >> 2) {
60 if (s->cm_lock == 0xa05f) {
65 case 6: /* CM_LMBUSCNT */
66 /* ??? High frequency timer. */
67 hw_error("integratorcm_read: CM_LMBUSCNT");
68 case 7: /* CM_AUXOSC */
70 case 8: /* CM_SDRAM */
74 case 10: /* CM_REFCT */
75 /* ??? High frequency timer. */
76 hw_error("integratorcm_read: CM_REFCT");
77 case 12: /* CM_FLAGS */
79 case 14: /* CM_NVFLAGS */
81 case 16: /* CM_IRQ_STAT */
82 return s->int_level & s->irq_enabled;
83 case 17: /* CM_IRQ_RSTAT */
85 case 18: /* CM_IRQ_ENSET */
86 return s->irq_enabled;
87 case 20: /* CM_SOFT_INTSET */
88 return s->int_level & 1;
89 case 24: /* CM_FIQ_STAT */
90 return s->int_level & s->fiq_enabled;
91 case 25: /* CM_FIQ_RSTAT */
93 case 26: /* CM_FIQ_ENSET */
94 return s->fiq_enabled;
95 case 32: /* CM_VOLTAGE_CTL0 */
96 case 33: /* CM_VOLTAGE_CTL1 */
97 case 34: /* CM_VOLTAGE_CTL2 */
98 case 35: /* CM_VOLTAGE_CTL3 */
99 /* ??? Voltage control unimplemented. */
102 hw_error("integratorcm_read: Unimplemented offset 0x%x\n",
108 static void integratorcm_do_remap(integratorcm_state *s, int flash)
111 cpu_register_physical_memory(0, 0x100000, IO_MEM_RAM);
113 cpu_register_physical_memory(0, 0x100000, s->flash_offset | IO_MEM_RAM);
115 //??? tlb_flush (cpu_single_env, 1);
118 static void integratorcm_set_ctrl(integratorcm_state *s, uint32_t value)
121 hw_error("Board reset\n");
123 if ((s->cm_init ^ value) & 4) {
124 integratorcm_do_remap(s, (value & 4) == 0);
126 if ((s->cm_init ^ value) & 1) {
127 printf("Green LED %s\n", (value & 1) ? "on" : "off");
129 s->cm_init = (s->cm_init & ~ 5) | (value ^ 5);
132 static void integratorcm_update(integratorcm_state *s)
134 /* ??? The CPU irq/fiq is raised when either the core module or base PIC
136 if (s->int_level & (s->irq_enabled | s->fiq_enabled))
137 hw_error("Core module interrupt\n");
140 static void integratorcm_write(void *opaque, target_phys_addr_t offset,
143 integratorcm_state *s = (integratorcm_state *)opaque;
144 switch (offset >> 2) {
146 if (s->cm_lock == 0xa05f)
149 case 3: /* CM_CTRL */
150 integratorcm_set_ctrl(s, value);
152 case 5: /* CM_LOCK */
153 s->cm_lock = value & 0xffff;
155 case 7: /* CM_AUXOSC */
156 if (s->cm_lock == 0xa05f)
157 s->cm_auxosc = value;
159 case 8: /* CM_SDRAM */
162 case 9: /* CM_INIT */
163 /* ??? This can change the memory bus frequency. */
166 case 12: /* CM_FLAGSS */
167 s->cm_flags |= value;
169 case 13: /* CM_FLAGSC */
170 s->cm_flags &= ~value;
172 case 14: /* CM_NVFLAGSS */
173 s->cm_nvflags |= value;
175 case 15: /* CM_NVFLAGSS */
176 s->cm_nvflags &= ~value;
178 case 18: /* CM_IRQ_ENSET */
179 s->irq_enabled |= value;
180 integratorcm_update(s);
182 case 19: /* CM_IRQ_ENCLR */
183 s->irq_enabled &= ~value;
184 integratorcm_update(s);
186 case 20: /* CM_SOFT_INTSET */
187 s->int_level |= (value & 1);
188 integratorcm_update(s);
190 case 21: /* CM_SOFT_INTCLR */
191 s->int_level &= ~(value & 1);
192 integratorcm_update(s);
194 case 26: /* CM_FIQ_ENSET */
195 s->fiq_enabled |= value;
196 integratorcm_update(s);
198 case 27: /* CM_FIQ_ENCLR */
199 s->fiq_enabled &= ~value;
200 integratorcm_update(s);
202 case 32: /* CM_VOLTAGE_CTL0 */
203 case 33: /* CM_VOLTAGE_CTL1 */
204 case 34: /* CM_VOLTAGE_CTL2 */
205 case 35: /* CM_VOLTAGE_CTL3 */
206 /* ??? Voltage control unimplemented. */
209 hw_error("integratorcm_write: Unimplemented offset 0x%x\n",
215 /* Integrator/CM control registers. */
217 static CPUReadMemoryFunc *integratorcm_readfn[] = {
223 static CPUWriteMemoryFunc *integratorcm_writefn[] = {
229 static void integratorcm_init(SysBusDevice *dev)
232 integratorcm_state *s = FROM_SYSBUS(integratorcm_state, dev);
235 memsz = qdev_get_prop_int(&dev->qdev, "memsz", 0);
236 s->cm_osc = 0x01000048;
237 /* ??? What should the high bits of this value be? */
238 s->cm_auxosc = 0x0007feff;
239 s->cm_sdram = 0x00011122;
241 integrator_spd[31] = 64;
243 } else if (memsz >= 128) {
244 integrator_spd[31] = 32;
246 } else if (memsz >= 64) {
247 integrator_spd[31] = 16;
249 } else if (memsz >= 32) {
250 integrator_spd[31] = 4;
253 integrator_spd[31] = 2;
255 memcpy(integrator_spd + 73, "QEMU-MEMORY", 11);
256 s->cm_init = 0x00000112;
257 s->flash_offset = qemu_ram_alloc(0x100000);
259 iomemtype = cpu_register_io_memory(0, integratorcm_readfn,
260 integratorcm_writefn, s);
261 sysbus_init_mmio(dev, 0x00800000, iomemtype);
262 integratorcm_do_remap(s, 1);
263 /* ??? Save/restore. */
266 /* Integrator/CP hardware emulation. */
267 /* Primary interrupt controller. */
269 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 uint32_t icp_pic_read(void *opaque, target_phys_addr_t offset)
301 icp_pic_state *s = (icp_pic_state *)opaque;
303 switch (offset >> 2) {
304 case 0: /* IRQ_STATUS */
305 return s->level & s->irq_enabled;
306 case 1: /* IRQ_RAWSTAT */
308 case 2: /* IRQ_ENABLESET */
309 return s->irq_enabled;
310 case 4: /* INT_SOFTSET */
312 case 8: /* FRQ_STATUS */
313 return s->level & s->fiq_enabled;
314 case 9: /* FRQ_RAWSTAT */
316 case 10: /* FRQ_ENABLESET */
317 return s->fiq_enabled;
318 case 3: /* IRQ_ENABLECLR */
319 case 5: /* INT_SOFTCLR */
320 case 11: /* FRQ_ENABLECLR */
322 printf ("icp_pic_read: Bad register offset 0x%x\n", (int)offset);
327 static void icp_pic_write(void *opaque, target_phys_addr_t offset,
330 icp_pic_state *s = (icp_pic_state *)opaque;
332 switch (offset >> 2) {
333 case 2: /* IRQ_ENABLESET */
334 s->irq_enabled |= value;
336 case 3: /* IRQ_ENABLECLR */
337 s->irq_enabled &= ~value;
339 case 4: /* INT_SOFTSET */
341 icp_pic_set_irq(s, 0, 1);
343 case 5: /* INT_SOFTCLR */
345 icp_pic_set_irq(s, 0, 0);
347 case 10: /* FRQ_ENABLESET */
348 s->fiq_enabled |= value;
350 case 11: /* FRQ_ENABLECLR */
351 s->fiq_enabled &= ~value;
353 case 0: /* IRQ_STATUS */
354 case 1: /* IRQ_RAWSTAT */
355 case 8: /* FRQ_STATUS */
356 case 9: /* FRQ_RAWSTAT */
358 printf ("icp_pic_write: Bad register offset 0x%x\n", (int)offset);
364 static CPUReadMemoryFunc *icp_pic_readfn[] = {
370 static CPUWriteMemoryFunc *icp_pic_writefn[] = {
376 static void icp_pic_init(SysBusDevice *dev)
378 icp_pic_state *s = FROM_SYSBUS(icp_pic_state, dev);
381 qdev_init_irq_sink(&dev->qdev, icp_pic_set_irq, 32);
382 sysbus_init_irq(dev, &s->parent_irq);
383 sysbus_init_irq(dev, &s->parent_fiq);
384 iomemtype = cpu_register_io_memory(0, icp_pic_readfn,
386 sysbus_init_mmio(dev, 0x00800000, iomemtype);
389 /* CP control registers. */
390 static uint32_t icp_control_read(void *opaque, target_phys_addr_t offset)
392 switch (offset >> 2) {
393 case 0: /* CP_IDFIELD */
395 case 1: /* CP_FLASHPROG */
397 case 2: /* CP_INTREG */
399 case 3: /* CP_DECODE */
402 hw_error("icp_control_read: Bad offset %x\n", (int)offset);
407 static void icp_control_write(void *opaque, target_phys_addr_t offset,
410 switch (offset >> 2) {
411 case 1: /* CP_FLASHPROG */
412 case 2: /* CP_INTREG */
413 case 3: /* CP_DECODE */
414 /* Nothing interesting implemented yet. */
417 hw_error("icp_control_write: Bad offset %x\n", (int)offset);
420 static CPUReadMemoryFunc *icp_control_readfn[] = {
426 static CPUWriteMemoryFunc *icp_control_writefn[] = {
432 static void icp_control_init(uint32_t base)
436 iomemtype = cpu_register_io_memory(0, icp_control_readfn,
437 icp_control_writefn, NULL);
438 cpu_register_physical_memory(base, 0x00800000, iomemtype);
439 /* ??? Save/restore. */
445 static struct arm_boot_info integrator_binfo = {
450 static void integratorcp_init(ram_addr_t ram_size,
451 const char *boot_device,
452 const char *kernel_filename, const char *kernel_cmdline,
453 const char *initrd_filename, const char *cpu_model)
456 ram_addr_t ram_offset;
463 cpu_model = "arm926";
464 env = cpu_init(cpu_model);
466 fprintf(stderr, "Unable to find CPU definition\n");
469 ram_offset = qemu_ram_alloc(ram_size);
470 /* ??? On a real system the first 1Mb is mapped as SSRAM or boot flash. */
471 /* ??? RAM should repeat to fill physical memory space. */
472 /* SDRAM at address zero*/
473 cpu_register_physical_memory(0, ram_size, ram_offset | IO_MEM_RAM);
474 /* And again at address 0x80000000 */
475 cpu_register_physical_memory(0x80000000, ram_size, ram_offset | IO_MEM_RAM);
477 dev = qdev_create(NULL, "integrator_core");
478 qdev_set_prop_int(dev, "memsz", ram_size >> 20);
480 sysbus_mmio_map((SysBusDevice *)dev, 0, 0x10000000);
482 cpu_pic = arm_pic_init_cpu(env);
483 dev = sysbus_create_varargs("integrator_pic", 0x14000000,
484 cpu_pic[ARM_PIC_CPU_IRQ],
485 cpu_pic[ARM_PIC_CPU_FIQ], NULL);
486 for (i = 0; i < 32; i++) {
487 pic[i] = qdev_get_irq_sink(dev, i);
489 sysbus_create_simple("integrator_pic", 0xca000000, pic[26]);
490 sysbus_create_varargs("integrator_pit", 0x13000000,
491 pic[5], pic[6], pic[7], NULL);
492 sysbus_create_simple("pl031", 0x15000000, pic[8]);
493 sysbus_create_simple("pl011", 0x16000000, pic[1]);
494 sysbus_create_simple("pl011", 0x17000000, pic[2]);
495 icp_control_init(0xcb000000);
496 sysbus_create_simple("pl050_keyboard", 0x18000000, pic[3]);
497 sysbus_create_simple("pl050_mouse", 0x19000000, pic[4]);
498 sysbus_create_varargs("pl181", 0x1c000000, pic[23], pic[24], NULL);
499 if (nd_table[0].vlan)
500 smc91c111_init(&nd_table[0], 0xc8000000, pic[27]);
502 sysbus_create_simple("pl110", 0xc0000000, pic[22]);
504 integrator_binfo.ram_size = ram_size;
505 integrator_binfo.kernel_filename = kernel_filename;
506 integrator_binfo.kernel_cmdline = kernel_cmdline;
507 integrator_binfo.initrd_filename = initrd_filename;
508 arm_load_kernel(env, &integrator_binfo);
511 static QEMUMachine integratorcp_machine = {
512 .name = "integratorcp",
513 .desc = "ARM Integrator/CP (ARM926EJ-S)",
514 .init = integratorcp_init,
518 static void integratorcp_machine_init(void)
520 qemu_register_machine(&integratorcp_machine);
523 machine_init(integratorcp_machine_init);
525 static void integratorcp_register_devices(void)
527 sysbus_register_dev("integrator_pic", sizeof(icp_pic_state), icp_pic_init);
528 sysbus_register_dev("integrator_core", sizeof(integratorcm_state),
532 device_init(integratorcp_register_devices)