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arm: Instantiate NRF51 random number generator 

Use RNG in SOC.

Signed-off-by: Steffen Görtz <contrib@steffen-goertz.de>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 20190103091119.9367-5-stefanha@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Steffen Görtz 2019-01-07 15:23:47 +00:00 committed by Peter Maydell
parent 90c58941f6
commit f30890def5
2 changed files with 18 additions and 0 deletions
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16
hw/arm/nrf51_soc.c
View File

@ -86,6 +86,19 @@ static void nrf51_soc_realize(DeviceState *dev_soc, Error **errp)
qdev_get_gpio_in(DEVICE(&s->cpu),
BASE_TO_IRQ(NRF51_UART_BASE)));
/* RNG */
object_property_set_bool(OBJECT(&s->rng), true, "realized", &err);
if (err) {
error_propagate(errp, err);
return;
}
mr = sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->rng), 0);
memory_region_add_subregion_overlap(&s->container, NRF51_RNG_BASE, mr, 0);
sysbus_connect_irq(SYS_BUS_DEVICE(&s->rng), 0,
qdev_get_gpio_in(DEVICE(&s->cpu),
BASE_TO_IRQ(NRF51_RNG_BASE)));
create_unimplemented_device("nrf51_soc.io", NRF51_IOMEM_BASE,
NRF51_IOMEM_SIZE);
create_unimplemented_device("nrf51_soc.ficr", NRF51_FICR_BASE,
@ -110,6 +123,9 @@ static void nrf51_soc_init(Object *obj)
TYPE_NRF51_UART);
object_property_add_alias(obj, "serial0", OBJECT(&s->uart), "chardev",
&error_abort);
sysbus_init_child_obj(obj, "rng", &s->rng, sizeof(s->rng),
TYPE_NRF51_RNG);
}
static Property nrf51_soc_properties[] = {

2
include/hw/arm/nrf51_soc.h
View File

@ -13,6 +13,7 @@
#include "hw/sysbus.h"
#include "hw/arm/armv7m.h"
#include "hw/char/nrf51_uart.h"
#include "hw/misc/nrf51_rng.h"
#define TYPE_NRF51_SOC "nrf51-soc"
#define NRF51_SOC(obj) \
@ -26,6 +27,7 @@ typedef struct NRF51State {
ARMv7MState cpu;
NRF51UARTState uart;
NRF51RNGState rng;
MemoryRegion iomem;
MemoryRegion sram;