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qemu/hw/arm/integratorcp.c

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/*
* ARM Integrator CP System emulation.
*
* Copyright (c) 2005-2007 CodeSourcery.
* Written by Paul Brook
*
* This code is licensed under the GPL
*/
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "qemu-common.h"
#include "cpu.h"
#include "hw/sysbus.h"
#include "hw/devices.h"
#include "hw/boards.h"
#include "hw/arm/arm.h"
#include "hw/misc/arm_integrator_debug.h"
#include "net/net.h"
#include "exec/address-spaces.h"
#include "sysemu/sysemu.h"
#include "qemu/error-report.h"
#include "hw/char/pl011.h"
#define TYPE_INTEGRATOR_CM "integrator_core"
#define INTEGRATOR_CM(obj) \
OBJECT_CHECK(IntegratorCMState, (obj), TYPE_INTEGRATOR_CM)
typedef struct IntegratorCMState {
/*< private >*/
SysBusDevice parent_obj;
/*< public >*/
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 cm_refcnt_offset;
uint32_t int_level;
uint32_t irq_enabled;
uint32_t fiq_enabled;
} IntegratorCMState;
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 const VMStateDescription vmstate_integratorcm = {
.name = "integratorcm",
.version_id = 1,
.minimum_version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_UINT32(cm_osc, IntegratorCMState),
VMSTATE_UINT32(cm_ctrl, IntegratorCMState),
VMSTATE_UINT32(cm_lock, IntegratorCMState),
VMSTATE_UINT32(cm_auxosc, IntegratorCMState),
VMSTATE_UINT32(cm_sdram, IntegratorCMState),
VMSTATE_UINT32(cm_init, IntegratorCMState),
VMSTATE_UINT32(cm_flags, IntegratorCMState),
VMSTATE_UINT32(cm_nvflags, IntegratorCMState),
VMSTATE_UINT32(int_level, IntegratorCMState),
VMSTATE_UINT32(irq_enabled, IntegratorCMState),
VMSTATE_UINT32(fiq_enabled, IntegratorCMState),
VMSTATE_END_OF_LIST()
}
};
static uint64_t integratorcm_read(void *opaque, hwaddr offset,
unsigned size)
{
IntegratorCMState *s = 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_REFCNT */
/* This register, CM_REFCNT, provides a 32-bit count value.
* The count increments at the fixed reference clock frequency of 24MHz
* and can be used as a real-time counter.
*/
return (uint32_t)muldiv64(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL), 24,
1000) - s->cm_refcnt_offset;
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(IntegratorCMState *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(IntegratorCMState *s, uint32_t value)
{
if (value & 8) {
qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);
}
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(IntegratorCMState *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)
{
IntegratorCMState *s = 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 void integratorcm_init(Object *obj)
{
IntegratorCMState *s = INTEGRATOR_CM(obj);
SysBusDevice *dev = SYS_BUS_DEVICE(obj);
s->cm_osc = 0x01000048;
/* ??? What should the high bits of this value be? */
s->cm_auxosc = 0x0007feff;
s->cm_sdram = 0x00011122;
memcpy(integrator_spd + 73, "QEMU-MEMORY", 11);
s->cm_init = 0x00000112;
s->cm_refcnt_offset = muldiv64(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL), 24,
1000);
memory_region_init_ram(&s->flash, obj, "integrator.flash", 0x100000,
&error_fatal);
memory_region_init_io(&s->iomem, obj, &integratorcm_ops, s,
"integratorcm", 0x00800000);
sysbus_init_mmio(dev, &s->iomem);
integratorcm_do_remap(s);
/* ??? Save/restore. */
}
static void integratorcm_realize(DeviceState *d, Error **errp)
{
IntegratorCMState *s = INTEGRATOR_CM(d);
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;
}
}
/* Integrator/CP hardware emulation. */
/* Primary interrupt controller. */
#define TYPE_INTEGRATOR_PIC "integrator_pic"
#define INTEGRATOR_PIC(obj) \
OBJECT_CHECK(icp_pic_state, (obj), TYPE_INTEGRATOR_PIC)
typedef struct icp_pic_state {
/*< private >*/
SysBusDevice parent_obj;
/*< public >*/
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 const VMStateDescription vmstate_icp_pic = {
.name = "icp_pic",
.version_id = 1,
.minimum_version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_UINT32(level, icp_pic_state),
VMSTATE_UINT32(irq_enabled, icp_pic_state),
VMSTATE_UINT32(fiq_enabled, icp_pic_state),
VMSTATE_END_OF_LIST()
}
};
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 void icp_pic_init(Object *obj)
{
DeviceState *dev = DEVICE(obj);
icp_pic_state *s = INTEGRATOR_PIC(obj);
SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
qdev_init_gpio_in(dev, icp_pic_set_irq, 32);
sysbus_init_irq(sbd, &s->parent_irq);
sysbus_init_irq(sbd, &s->parent_fiq);
memory_region_init_io(&s->iomem, obj, &icp_pic_ops, s,
"icp-pic", 0x00800000);
sysbus_init_mmio(sbd, &s->iomem);
}
/* CP control registers. */
#define TYPE_ICP_CONTROL_REGS "icp-ctrl-regs"
#define ICP_CONTROL_REGS(obj) \
OBJECT_CHECK(ICPCtrlRegsState, (obj), TYPE_ICP_CONTROL_REGS)
typedef struct ICPCtrlRegsState {
/*< private >*/
SysBusDevice parent_obj;
/*< public >*/
MemoryRegion iomem;
qemu_irq mmc_irq;
uint32_t intreg_state;
} ICPCtrlRegsState;
#define ICP_GPIO_MMC_WPROT "mmc-wprot"
#define ICP_GPIO_MMC_CARDIN "mmc-cardin"
#define ICP_INTREG_WPROT (1 << 0)
#define ICP_INTREG_CARDIN (1 << 3)
static const VMStateDescription vmstate_icp_control = {
.name = "icp_control",
.version_id = 1,
.minimum_version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_UINT32(intreg_state, ICPCtrlRegsState),
VMSTATE_END_OF_LIST()
}
};
static uint64_t icp_control_read(void *opaque, hwaddr offset,
unsigned size)
{
ICPCtrlRegsState *s = opaque;
switch (offset >> 2) {
case 0: /* CP_IDFIELD */
return 0x41034003;
case 1: /* CP_FLASHPROG */
return 0;
case 2: /* CP_INTREG */
return s->intreg_state;
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)
{
ICPCtrlRegsState *s = opaque;
switch (offset >> 2) {
case 2: /* CP_INTREG */
s->intreg_state &= ~(value & ICP_INTREG_CARDIN);
qemu_set_irq(s->mmc_irq, !!(s->intreg_state & ICP_INTREG_CARDIN));
break;
case 1: /* CP_FLASHPROG */
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_mmc_wprot(void *opaque, int line, int level)
{
ICPCtrlRegsState *s = opaque;
s->intreg_state &= ~ICP_INTREG_WPROT;
if (level) {
s->intreg_state |= ICP_INTREG_WPROT;
}
}
static void icp_control_mmc_cardin(void *opaque, int line, int level)
{
ICPCtrlRegsState *s = opaque;
/* line is released by writing to CP_INTREG */
if (level) {
s->intreg_state |= ICP_INTREG_CARDIN;
qemu_set_irq(s->mmc_irq, 1);
}
}
static void icp_control_init(Object *obj)
{
SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
ICPCtrlRegsState *s = ICP_CONTROL_REGS(obj);
DeviceState *dev = DEVICE(obj);
memory_region_init_io(&s->iomem, OBJECT(s), &icp_control_ops, s,
"icp_ctrl_regs", 0x00800000);
sysbus_init_mmio(sbd, &s->iomem);
qdev_init_gpio_in_named(dev, icp_control_mmc_wprot, ICP_GPIO_MMC_WPROT, 1);
qdev_init_gpio_in_named(dev, icp_control_mmc_cardin,
ICP_GPIO_MMC_CARDIN, 1);
sysbus_init_irq(sbd, &s->mmc_irq);
}
/* Board init. */
static struct arm_boot_info integrator_binfo = {
.loader_start = 0x0,
.board_id = 0x113,
};
static void integratorcp_init(MachineState *machine)
{
ram_addr_t ram_size = machine->ram_size;
const char *kernel_filename = machine->kernel_filename;
const char *kernel_cmdline = machine->kernel_cmdline;
const char *initrd_filename = machine->initrd_filename;
Object *cpuobj;
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];
DeviceState *dev, *sic, *icp;
int i;
cpuobj = object_new(machine->cpu_type);
/* By default ARM1176 CPUs have EL3 enabled. This board does not
* currently support EL3 so the CPU EL3 property is disabled before
* realization.
*/
if (object_property_find(cpuobj, "has_el3", NULL)) {
object_property_set_bool(cpuobj, false, "has_el3", &error_fatal);
}
object_property_set_bool(cpuobj, true, "realized", &error_fatal);
cpu = ARM_CPU(cpuobj);
memory_region_allocate_system_memory(ram, NULL, "integrator.ram",
ram_size);
/* ??? 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, NULL, "ram.alias", ram, 0, ram_size);
memory_region_add_subregion(address_space_mem, 0x80000000, ram_alias);
dev = qdev_create(NULL, TYPE_INTEGRATOR_CM);
qdev_prop_set_uint32(dev, "memsz", ram_size >> 20);
qdev_init_nofail(dev);
sysbus_mmio_map((SysBusDevice *)dev, 0, 0x10000000);
dev = sysbus_create_varargs(TYPE_INTEGRATOR_PIC, 0x14000000,
qdev_get_gpio_in(DEVICE(cpu), ARM_CPU_IRQ),
qdev_get_gpio_in(DEVICE(cpu), ARM_CPU_FIQ),
NULL);
for (i = 0; i < 32; i++) {
pic[i] = qdev_get_gpio_in(dev, i);
}
sic = sysbus_create_simple(TYPE_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]);
pl011_create(0x16000000, pic[1], serial_hds[0]);
pl011_create(0x17000000, pic[2], serial_hds[1]);
icp = sysbus_create_simple(TYPE_ICP_CONTROL_REGS, 0xcb000000,
qdev_get_gpio_in(sic, 3));
sysbus_create_simple("pl050_keyboard", 0x18000000, pic[3]);
sysbus_create_simple("pl050_mouse", 0x19000000, pic[4]);
sysbus_create_simple(TYPE_INTEGRATOR_DEBUG, 0x1a000000, 0);
dev = sysbus_create_varargs("pl181", 0x1c000000, pic[23], pic[24], NULL);
qdev_connect_gpio_out(dev, 0,
qdev_get_gpio_in_named(icp, ICP_GPIO_MMC_WPROT, 0));
qdev_connect_gpio_out(dev, 1,
qdev_get_gpio_in_named(icp, ICP_GPIO_MMC_CARDIN, 0));
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 void integratorcp_machine_init(MachineClass *mc)
{
mc->desc = "ARM Integrator/CP (ARM926EJ-S)";
mc->init = integratorcp_init;
mc->ignore_memory_transaction_failures = true;
mc->default_cpu_type = ARM_CPU_TYPE_NAME("arm926");
}
DEFINE_MACHINE("integratorcp", integratorcp_machine_init)
static Property core_properties[] = {
DEFINE_PROP_UINT32("memsz", IntegratorCMState, memsz, 0),
DEFINE_PROP_END_OF_LIST(),
};
static void core_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
dc->props = core_properties;
dc->realize = integratorcm_realize;
dc->vmsd = &vmstate_integratorcm;
}
static void icp_pic_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
dc->vmsd = &vmstate_icp_pic;
}
static void icp_control_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
dc->vmsd = &vmstate_icp_control;
}
static const TypeInfo core_info = {
.name = TYPE_INTEGRATOR_CM,
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(IntegratorCMState),
.instance_init = integratorcm_init,
.class_init = core_class_init,
};
static const TypeInfo icp_pic_info = {
.name = TYPE_INTEGRATOR_PIC,
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(icp_pic_state),
.instance_init = icp_pic_init,
.class_init = icp_pic_class_init,
};
static const TypeInfo icp_ctrl_regs_info = {
.name = TYPE_ICP_CONTROL_REGS,
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(ICPCtrlRegsState),
.instance_init = icp_control_init,
.class_init = icp_control_class_init,
};
static void integratorcp_register_types(void)
{
type_register_static(&icp_pic_info);
type_register_static(&core_info);
type_register_static(&icp_ctrl_regs_info);
}
type_init(integratorcp_register_types)
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