| /* |
| * ARM Integrator CP System emulation. |
| * |
| * Copyright (c) 2005-2007 CodeSourcery. |
| * Written by Paul Brook |
| * |
| * This code is licensed under the GPL |
| */ |
| |
| #include "sysbus.h" |
| #include "devices.h" |
| #include "boards.h" |
| #include "arm-misc.h" |
| #include "net/net.h" |
| #include "exec-memory.h" |
| #include "sysemu.h" |
| |
| typedef struct { |
| SysBusDevice busdev; |
| MemoryRegion iomem; |
| uint32_t memsz; |
| MemoryRegion flash; |
| uint32_t cm_osc; |
| uint32_t cm_ctrl; |
| uint32_t cm_lock; |
| uint32_t cm_auxosc; |
| uint32_t cm_sdram; |
| uint32_t cm_init; |
| uint32_t cm_flags; |
| uint32_t cm_nvflags; |
| uint32_t int_level; |
| uint32_t irq_enabled; |
| uint32_t fiq_enabled; |
| } integratorcm_state; |
| |
| static uint8_t integrator_spd[128] = { |
| 128, 8, 4, 11, 9, 1, 64, 0, 2, 0xa0, 0xa0, 0, 0, 8, 0, 1, |
| 0xe, 4, 0x1c, 1, 2, 0x20, 0xc0, 0, 0, 0, 0, 0x30, 0x28, 0x30, 0x28, 0x40 |
| }; |
| |
| static uint64_t integratorcm_read(void *opaque, hwaddr offset, |
| unsigned size) |
| { |
| integratorcm_state *s = (integratorcm_state *)opaque; |
| if (offset >= 0x100 && offset < 0x200) { |
| /* CM_SPD */ |
| if (offset >= 0x180) |
| return 0; |
| return integrator_spd[offset >> 2]; |
| } |
| switch (offset >> 2) { |
| case 0: /* CM_ID */ |
| return 0x411a3001; |
| case 1: /* CM_PROC */ |
| return 0; |
| case 2: /* CM_OSC */ |
| return s->cm_osc; |
| case 3: /* CM_CTRL */ |
| return s->cm_ctrl; |
| case 4: /* CM_STAT */ |
| return 0x00100000; |
| case 5: /* CM_LOCK */ |
| if (s->cm_lock == 0xa05f) { |
| return 0x1a05f; |
| } else { |
| return s->cm_lock; |
| } |
| case 6: /* CM_LMBUSCNT */ |
| /* ??? High frequency timer. */ |
| hw_error("integratorcm_read: CM_LMBUSCNT"); |
| case 7: /* CM_AUXOSC */ |
| return s->cm_auxosc; |
| case 8: /* CM_SDRAM */ |
| return s->cm_sdram; |
| case 9: /* CM_INIT */ |
| return s->cm_init; |
| case 10: /* CM_REFCT */ |
| /* ??? High frequency timer. */ |
| hw_error("integratorcm_read: CM_REFCT"); |
| case 12: /* CM_FLAGS */ |
| return s->cm_flags; |
| case 14: /* CM_NVFLAGS */ |
| return s->cm_nvflags; |
| case 16: /* CM_IRQ_STAT */ |
| return s->int_level & s->irq_enabled; |
| case 17: /* CM_IRQ_RSTAT */ |
| return s->int_level; |
| case 18: /* CM_IRQ_ENSET */ |
| return s->irq_enabled; |
| case 20: /* CM_SOFT_INTSET */ |
| return s->int_level & 1; |
| case 24: /* CM_FIQ_STAT */ |
| return s->int_level & s->fiq_enabled; |
| case 25: /* CM_FIQ_RSTAT */ |
| return s->int_level; |
| case 26: /* CM_FIQ_ENSET */ |
| return s->fiq_enabled; |
| case 32: /* CM_VOLTAGE_CTL0 */ |
| case 33: /* CM_VOLTAGE_CTL1 */ |
| case 34: /* CM_VOLTAGE_CTL2 */ |
| case 35: /* CM_VOLTAGE_CTL3 */ |
| /* ??? Voltage control unimplemented. */ |
| return 0; |
| default: |
| hw_error("integratorcm_read: Unimplemented offset 0x%x\n", |
| (int)offset); |
| return 0; |
| } |
| } |
| |
| static void integratorcm_do_remap(integratorcm_state *s) |
| { |
| /* Sync memory region state with CM_CTRL REMAP bit: |
| * bit 0 => flash at address 0; bit 1 => RAM |
| */ |
| memory_region_set_enabled(&s->flash, !(s->cm_ctrl & 4)); |
| } |
| |
| static void integratorcm_set_ctrl(integratorcm_state *s, uint32_t value) |
| { |
| if (value & 8) { |
| qemu_system_reset_request(); |
| } |
| if ((s->cm_ctrl ^ value) & 1) { |
| /* (value & 1) != 0 means the green "MISC LED" is lit. |
| * We don't have any nice place to display LEDs. printf is a bad |
| * idea because Linux uses the LED as a heartbeat and the output |
| * will swamp anything else on the terminal. |
| */ |
| } |
| /* Note that the RESET bit [3] always reads as zero */ |
| s->cm_ctrl = (s->cm_ctrl & ~5) | (value & 5); |
| integratorcm_do_remap(s); |
| } |
| |
| static void integratorcm_update(integratorcm_state *s) |
| { |
| /* ??? The CPU irq/fiq is raised when either the core module or base PIC |
| are active. */ |
| if (s->int_level & (s->irq_enabled | s->fiq_enabled)) |
| hw_error("Core module interrupt\n"); |
| } |
| |
| static void integratorcm_write(void *opaque, hwaddr offset, |
| uint64_t value, unsigned size) |
| { |
| integratorcm_state *s = (integratorcm_state *)opaque; |
| switch (offset >> 2) { |
| case 2: /* CM_OSC */ |
| if (s->cm_lock == 0xa05f) |
| s->cm_osc = value; |
| break; |
| case 3: /* CM_CTRL */ |
| integratorcm_set_ctrl(s, value); |
| break; |
| case 5: /* CM_LOCK */ |
| s->cm_lock = value & 0xffff; |
| break; |
| case 7: /* CM_AUXOSC */ |
| if (s->cm_lock == 0xa05f) |
| s->cm_auxosc = value; |
| break; |
| case 8: /* CM_SDRAM */ |
| s->cm_sdram = value; |
| break; |
| case 9: /* CM_INIT */ |
| /* ??? This can change the memory bus frequency. */ |
| s->cm_init = value; |
| break; |
| case 12: /* CM_FLAGSS */ |
| s->cm_flags |= value; |
| break; |
| case 13: /* CM_FLAGSC */ |
| s->cm_flags &= ~value; |
| break; |
| case 14: /* CM_NVFLAGSS */ |
| s->cm_nvflags |= value; |
| break; |
| case 15: /* CM_NVFLAGSS */ |
| s->cm_nvflags &= ~value; |
| break; |
| case 18: /* CM_IRQ_ENSET */ |
| s->irq_enabled |= value; |
| integratorcm_update(s); |
| break; |
| case 19: /* CM_IRQ_ENCLR */ |
| s->irq_enabled &= ~value; |
| integratorcm_update(s); |
| break; |
| case 20: /* CM_SOFT_INTSET */ |
| s->int_level |= (value & 1); |
| integratorcm_update(s); |
| break; |
| case 21: /* CM_SOFT_INTCLR */ |
| s->int_level &= ~(value & 1); |
| integratorcm_update(s); |
| break; |
| case 26: /* CM_FIQ_ENSET */ |
| s->fiq_enabled |= value; |
| integratorcm_update(s); |
| break; |
| case 27: /* CM_FIQ_ENCLR */ |
| s->fiq_enabled &= ~value; |
| integratorcm_update(s); |
| break; |
| case 32: /* CM_VOLTAGE_CTL0 */ |
| case 33: /* CM_VOLTAGE_CTL1 */ |
| case 34: /* CM_VOLTAGE_CTL2 */ |
| case 35: /* CM_VOLTAGE_CTL3 */ |
| /* ??? Voltage control unimplemented. */ |
| break; |
| default: |
| hw_error("integratorcm_write: Unimplemented offset 0x%x\n", |
| (int)offset); |
| break; |
| } |
| } |
| |
| /* Integrator/CM control registers. */ |
| |
| static const MemoryRegionOps integratorcm_ops = { |
| .read = integratorcm_read, |
| .write = integratorcm_write, |
| .endianness = DEVICE_NATIVE_ENDIAN, |
| }; |
| |
| static int integratorcm_init(SysBusDevice *dev) |
| { |
| integratorcm_state *s = FROM_SYSBUS(integratorcm_state, dev); |
| |
| s->cm_osc = 0x01000048; |
| /* ??? What should the high bits of this value be? */ |
| s->cm_auxosc = 0x0007feff; |
| s->cm_sdram = 0x00011122; |
| if (s->memsz >= 256) { |
| integrator_spd[31] = 64; |
| s->cm_sdram |= 0x10; |
| } else if (s->memsz >= 128) { |
| integrator_spd[31] = 32; |
| s->cm_sdram |= 0x0c; |
| } else if (s->memsz >= 64) { |
| integrator_spd[31] = 16; |
| s->cm_sdram |= 0x08; |
| } else if (s->memsz >= 32) { |
| integrator_spd[31] = 4; |
| s->cm_sdram |= 0x04; |
| } else { |
| integrator_spd[31] = 2; |
| } |
| memcpy(integrator_spd + 73, "QEMU-MEMORY", 11); |
| s->cm_init = 0x00000112; |
| memory_region_init_ram(&s->flash, "integrator.flash", 0x100000); |
| vmstate_register_ram_global(&s->flash); |
| |
| memory_region_init_io(&s->iomem, &integratorcm_ops, s, |
| "integratorcm", 0x00800000); |
| sysbus_init_mmio(dev, &s->iomem); |
| |
| integratorcm_do_remap(s); |
| /* ??? Save/restore. */ |
| return 0; |
| } |
| |
| /* Integrator/CP hardware emulation. */ |
| /* Primary interrupt controller. */ |
| |
| typedef struct icp_pic_state |
| { |
| SysBusDevice busdev; |
| MemoryRegion iomem; |
| uint32_t level; |
| uint32_t irq_enabled; |
| uint32_t fiq_enabled; |
| qemu_irq parent_irq; |
| qemu_irq parent_fiq; |
| } icp_pic_state; |
| |
| static void icp_pic_update(icp_pic_state *s) |
| { |
| uint32_t flags; |
| |
| flags = (s->level & s->irq_enabled); |
| qemu_set_irq(s->parent_irq, flags != 0); |
| flags = (s->level & s->fiq_enabled); |
| qemu_set_irq(s->parent_fiq, flags != 0); |
| } |
| |
| static void icp_pic_set_irq(void *opaque, int irq, int level) |
| { |
| icp_pic_state *s = (icp_pic_state *)opaque; |
| if (level) |
| s->level |= 1 << irq; |
| else |
| s->level &= ~(1 << irq); |
| icp_pic_update(s); |
| } |
| |
| static uint64_t icp_pic_read(void *opaque, hwaddr offset, |
| unsigned size) |
| { |
| icp_pic_state *s = (icp_pic_state *)opaque; |
| |
| switch (offset >> 2) { |
| case 0: /* IRQ_STATUS */ |
| return s->level & s->irq_enabled; |
| case 1: /* IRQ_RAWSTAT */ |
| return s->level; |
| case 2: /* IRQ_ENABLESET */ |
| return s->irq_enabled; |
| case 4: /* INT_SOFTSET */ |
| return s->level & 1; |
| case 8: /* FRQ_STATUS */ |
| return s->level & s->fiq_enabled; |
| case 9: /* FRQ_RAWSTAT */ |
| return s->level; |
| case 10: /* FRQ_ENABLESET */ |
| return s->fiq_enabled; |
| case 3: /* IRQ_ENABLECLR */ |
| case 5: /* INT_SOFTCLR */ |
| case 11: /* FRQ_ENABLECLR */ |
| default: |
| printf ("icp_pic_read: Bad register offset 0x%x\n", (int)offset); |
| return 0; |
| } |
| } |
| |
| static void icp_pic_write(void *opaque, hwaddr offset, |
| uint64_t value, unsigned size) |
| { |
| icp_pic_state *s = (icp_pic_state *)opaque; |
| |
| switch (offset >> 2) { |
| case 2: /* IRQ_ENABLESET */ |
| s->irq_enabled |= value; |
| break; |
| case 3: /* IRQ_ENABLECLR */ |
| s->irq_enabled &= ~value; |
| break; |
| case 4: /* INT_SOFTSET */ |
| if (value & 1) |
| icp_pic_set_irq(s, 0, 1); |
| break; |
| case 5: /* INT_SOFTCLR */ |
| if (value & 1) |
| icp_pic_set_irq(s, 0, 0); |
| break; |
| case 10: /* FRQ_ENABLESET */ |
| s->fiq_enabled |= value; |
| break; |
| case 11: /* FRQ_ENABLECLR */ |
| s->fiq_enabled &= ~value; |
| break; |
| case 0: /* IRQ_STATUS */ |
| case 1: /* IRQ_RAWSTAT */ |
| case 8: /* FRQ_STATUS */ |
| case 9: /* FRQ_RAWSTAT */ |
| default: |
| printf ("icp_pic_write: Bad register offset 0x%x\n", (int)offset); |
| return; |
| } |
| icp_pic_update(s); |
| } |
| |
| static const MemoryRegionOps icp_pic_ops = { |
| .read = icp_pic_read, |
| .write = icp_pic_write, |
| .endianness = DEVICE_NATIVE_ENDIAN, |
| }; |
| |
| static int icp_pic_init(SysBusDevice *dev) |
| { |
| icp_pic_state *s = FROM_SYSBUS(icp_pic_state, dev); |
| |
| qdev_init_gpio_in(&dev->qdev, icp_pic_set_irq, 32); |
| sysbus_init_irq(dev, &s->parent_irq); |
| sysbus_init_irq(dev, &s->parent_fiq); |
| memory_region_init_io(&s->iomem, &icp_pic_ops, s, "icp-pic", 0x00800000); |
| sysbus_init_mmio(dev, &s->iomem); |
| return 0; |
| } |
| |
| /* CP control registers. */ |
| |
| static uint64_t icp_control_read(void *opaque, hwaddr offset, |
| unsigned size) |
| { |
| switch (offset >> 2) { |
| case 0: /* CP_IDFIELD */ |
| return 0x41034003; |
| case 1: /* CP_FLASHPROG */ |
| return 0; |
| case 2: /* CP_INTREG */ |
| return 0; |
| case 3: /* CP_DECODE */ |
| return 0x11; |
| default: |
| hw_error("icp_control_read: Bad offset %x\n", (int)offset); |
| return 0; |
| } |
| } |
| |
| static void icp_control_write(void *opaque, hwaddr offset, |
| uint64_t value, unsigned size) |
| { |
| switch (offset >> 2) { |
| case 1: /* CP_FLASHPROG */ |
| case 2: /* CP_INTREG */ |
| case 3: /* CP_DECODE */ |
| /* Nothing interesting implemented yet. */ |
| break; |
| default: |
| hw_error("icp_control_write: Bad offset %x\n", (int)offset); |
| } |
| } |
| |
| static const MemoryRegionOps icp_control_ops = { |
| .read = icp_control_read, |
| .write = icp_control_write, |
| .endianness = DEVICE_NATIVE_ENDIAN, |
| }; |
| |
| static void icp_control_init(hwaddr base) |
| { |
| MemoryRegion *io; |
| |
| io = (MemoryRegion *)g_malloc0(sizeof(MemoryRegion)); |
| memory_region_init_io(io, &icp_control_ops, NULL, |
| "control", 0x00800000); |
| memory_region_add_subregion(get_system_memory(), base, io); |
| /* ??? Save/restore. */ |
| } |
| |
| |
| /* Board init. */ |
| |
| static struct arm_boot_info integrator_binfo = { |
| .loader_start = 0x0, |
| .board_id = 0x113, |
| }; |
| |
| static void integratorcp_init(QEMUMachineInitArgs *args) |
| { |
| ram_addr_t ram_size = args->ram_size; |
| const char *cpu_model = args->cpu_model; |
| const char *kernel_filename = args->kernel_filename; |
| const char *kernel_cmdline = args->kernel_cmdline; |
| const char *initrd_filename = args->initrd_filename; |
| ARMCPU *cpu; |
| MemoryRegion *address_space_mem = get_system_memory(); |
| MemoryRegion *ram = g_new(MemoryRegion, 1); |
| MemoryRegion *ram_alias = g_new(MemoryRegion, 1); |
| qemu_irq pic[32]; |
| qemu_irq *cpu_pic; |
| DeviceState *dev; |
| int i; |
| |
| if (!cpu_model) { |
| cpu_model = "arm926"; |
| } |
| cpu = cpu_arm_init(cpu_model); |
| if (!cpu) { |
| fprintf(stderr, "Unable to find CPU definition\n"); |
| exit(1); |
| } |
| |
| memory_region_init_ram(ram, "integrator.ram", ram_size); |
| vmstate_register_ram_global(ram); |
| /* ??? On a real system the first 1Mb is mapped as SSRAM or boot flash. */ |
| /* ??? RAM should repeat to fill physical memory space. */ |
| /* SDRAM at address zero*/ |
| memory_region_add_subregion(address_space_mem, 0, ram); |
| /* And again at address 0x80000000 */ |
| memory_region_init_alias(ram_alias, "ram.alias", ram, 0, ram_size); |
| memory_region_add_subregion(address_space_mem, 0x80000000, ram_alias); |
| |
| dev = qdev_create(NULL, "integrator_core"); |
| qdev_prop_set_uint32(dev, "memsz", ram_size >> 20); |
| qdev_init_nofail(dev); |
| sysbus_mmio_map((SysBusDevice *)dev, 0, 0x10000000); |
| |
| cpu_pic = arm_pic_init_cpu(cpu); |
| dev = sysbus_create_varargs("integrator_pic", 0x14000000, |
| cpu_pic[ARM_PIC_CPU_IRQ], |
| cpu_pic[ARM_PIC_CPU_FIQ], NULL); |
| for (i = 0; i < 32; i++) { |
| pic[i] = qdev_get_gpio_in(dev, i); |
| } |
| sysbus_create_simple("integrator_pic", 0xca000000, pic[26]); |
| sysbus_create_varargs("integrator_pit", 0x13000000, |
| pic[5], pic[6], pic[7], NULL); |
| sysbus_create_simple("pl031", 0x15000000, pic[8]); |
| sysbus_create_simple("pl011", 0x16000000, pic[1]); |
| sysbus_create_simple("pl011", 0x17000000, pic[2]); |
| icp_control_init(0xcb000000); |
| sysbus_create_simple("pl050_keyboard", 0x18000000, pic[3]); |
| sysbus_create_simple("pl050_mouse", 0x19000000, pic[4]); |
| sysbus_create_varargs("pl181", 0x1c000000, pic[23], pic[24], NULL); |
| if (nd_table[0].used) |
| smc91c111_init(&nd_table[0], 0xc8000000, pic[27]); |
| |
| sysbus_create_simple("pl110", 0xc0000000, pic[22]); |
| |
| integrator_binfo.ram_size = ram_size; |
| integrator_binfo.kernel_filename = kernel_filename; |
| integrator_binfo.kernel_cmdline = kernel_cmdline; |
| integrator_binfo.initrd_filename = initrd_filename; |
| arm_load_kernel(cpu, &integrator_binfo); |
| } |
| |
| static QEMUMachine integratorcp_machine = { |
| .name = "integratorcp", |
| .desc = "ARM Integrator/CP (ARM926EJ-S)", |
| .init = integratorcp_init, |
| .is_default = 1, |
| }; |
| |
| static void integratorcp_machine_init(void) |
| { |
| qemu_register_machine(&integratorcp_machine); |
| } |
| |
| machine_init(integratorcp_machine_init); |
| |
| static Property core_properties[] = { |
| DEFINE_PROP_UINT32("memsz", integratorcm_state, memsz, 0), |
| DEFINE_PROP_END_OF_LIST(), |
| }; |
| |
| static void core_class_init(ObjectClass *klass, void *data) |
| { |
| DeviceClass *dc = DEVICE_CLASS(klass); |
| SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass); |
| |
| k->init = integratorcm_init; |
| dc->props = core_properties; |
| } |
| |
| static TypeInfo core_info = { |
| .name = "integrator_core", |
| .parent = TYPE_SYS_BUS_DEVICE, |
| .instance_size = sizeof(integratorcm_state), |
| .class_init = core_class_init, |
| }; |
| |
| static void icp_pic_class_init(ObjectClass *klass, void *data) |
| { |
| SysBusDeviceClass *sdc = SYS_BUS_DEVICE_CLASS(klass); |
| |
| sdc->init = icp_pic_init; |
| } |
| |
| static TypeInfo icp_pic_info = { |
| .name = "integrator_pic", |
| .parent = TYPE_SYS_BUS_DEVICE, |
| .instance_size = sizeof(icp_pic_state), |
| .class_init = icp_pic_class_init, |
| }; |
| |
| static void integratorcp_register_types(void) |
| { |
| type_register_static(&icp_pic_info); |
| type_register_static(&core_info); |
| } |
| |
| type_init(integratorcp_register_types) |
