static void microbit_init(MachineState *machine)
{
MicrobitMachineState *s = MICROBIT_MACHINE(machine);
MemoryRegion *system_memory = get_system_memory();
MemoryRegion *mr;
Object *soc = OBJECT(&s->nrf51);
Object *i2c = OBJECT(&s->i2c);
sysbus_init_child_obj(OBJECT(machine), "nrf51", soc, sizeof(s->nrf51),
TYPE_NRF51_SOC);
qdev_prop_set_chr(DEVICE(&s->nrf51), "serial0", serial_hd(0));
object_property_set_link(soc, OBJECT(system_memory), "memory",
&error_fatal);
object_property_set_bool(soc, true, "realized", &error_fatal);
/*
* Overlap the TWI stub device into the SoC. This is a microbit-specific
* hack until we implement the nRF51 TWI controller properly and the
* magnetometer/accelerometer devices.
*/
sysbus_init_child_obj(OBJECT(machine), "microbit.twi", i2c,
sizeof(s->i2c), TYPE_MICROBIT_I2C);
object_property_set_bool(i2c, true, "realized", &error_fatal);
mr = sysbus_mmio_get_region(SYS_BUS_DEVICE(i2c), 0);
memory_region_add_subregion_overlap(&s->nrf51.container, NRF51_TWI_BASE,
mr, -1);
armv7m_load_kernel(ARM_CPU(first_cpu), machine->kernel_filename,
NRF51_SOC(soc)->flash_size);
}
static void nrf51_soc_init(Object *obj)
{
NRF51State *s = NRF51_SOC(obj);
memory_region_init(&s->container, obj, "nrf51-container", UINT64_MAX);
sysbus_init_child_obj(OBJECT(s), "armv6m", OBJECT(&s->cpu), sizeof(s->cpu),
TYPE_ARMV7M);
qdev_prop_set_string(DEVICE(&s->cpu), "cpu-type",
ARM_CPU_TYPE_NAME("cortex-m0"));
qdev_prop_set_uint32(DEVICE(&s->cpu), "num-irq", 32);
}
static void nrf51_soc_realize(DeviceState *dev_soc, Error **errp)
{
NRF51State *s = NRF51_SOC(dev_soc);
Error *err = NULL;
if (!s->board_memory) {
error_setg(errp, "memory property was not set");
return;
}
object_property_set_link(OBJECT(&s->cpu), OBJECT(&s->container), "memory",
&err);
if (err) {
error_propagate(errp, err);
return;
}
object_property_set_bool(OBJECT(&s->cpu), true, "realized", &err);
if (err) {
error_propagate(errp, err);
return;
}
memory_region_add_subregion_overlap(&s->container, 0, s->board_memory, -1);
memory_region_init_rom(&s->flash, OBJECT(s), "nrf51.flash", s->flash_size,
&err);
if (err) {
error_propagate(errp, err);
return;
}
memory_region_add_subregion(&s->container, FLASH_BASE, &s->flash);
memory_region_init_ram(&s->sram, NULL, "nrf51.sram", s->sram_size, &err);
if (err) {
error_propagate(errp, err);
return;
}
memory_region_add_subregion(&s->container, SRAM_BASE, &s->sram);
create_unimplemented_device("nrf51_soc.io", IOMEM_BASE, IOMEM_SIZE);
create_unimplemented_device("nrf51_soc.ficr", FICR_BASE, FICR_SIZE);
create_unimplemented_device("nrf51_soc.private",
PRIVATE_BASE, PRIVATE_SIZE);
}