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arm: Add BBC micro:bit machine

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This adds the base for a machine model of the BBC micro:bit:

  https://en.wikipedia.org/wiki/Micro_Bit

This is a system with a nRF51 SoC containing the main processor, with
various peripherals on board.

Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Joel Stanley <joel@jms.id.au>
Message-id: 20180831220920.27113-4-joel@jms.id.au
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Joel Stanley 2018-09-25 14:02:31 +01:00 committed by Peter Maydell
parent 673b2d42a8
commit b148ed4665
2 changed files with 68 additions and 1 deletions
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2
hw/arm/Makefile.objs
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@ -37,4 +37,4 @@ obj-$(CONFIG_IOTKIT) += iotkit.o
obj-$(CONFIG_FSL_IMX7) += fsl-imx7.o mcimx7d-sabre.o
obj-$(CONFIG_ARM_SMMUV3) += smmu-common.o smmuv3.o
obj-$(CONFIG_FSL_IMX6UL) += fsl-imx6ul.o mcimx6ul-evk.o
obj-$(CONFIG_NRF51_SOC) += nrf51_soc.o
obj-$(CONFIG_NRF51_SOC) += nrf51_soc.o microbit.o

67
hw/arm/microbit.c Normal file
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@ -0,0 +1,67 @@
/*
* BBC micro:bit machine
* http://tech.microbit.org/hardware/
*
* Copyright 2018 Joel Stanley <joel@jms.id.au>
*
* This code is licensed under the GPL version 2 or later. See
* the COPYING file in the top-level directory.
*/
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "hw/boards.h"
#include "hw/arm/arm.h"
#include "exec/address-spaces.h"
#include "hw/arm/nrf51_soc.h"
typedef struct {
MachineState parent;
NRF51State nrf51;
} MicrobitMachineState;
#define TYPE_MICROBIT_MACHINE MACHINE_TYPE_NAME("microbit")
#define MICROBIT_MACHINE(obj) \
OBJECT_CHECK(MicrobitMachineState, obj, TYPE_MICROBIT_MACHINE)
static void microbit_init(MachineState *machine)
{
MicrobitMachineState *s = MICROBIT_MACHINE(machine);
MemoryRegion *system_memory = get_system_memory();
Object *soc = OBJECT(&s->nrf51);
sysbus_init_child_obj(OBJECT(machine), "nrf51", soc, sizeof(s->nrf51),
TYPE_NRF51_SOC);
object_property_set_link(soc, OBJECT(system_memory), "memory",
&error_fatal);
object_property_set_bool(soc, true, "realized", &error_fatal);
armv7m_load_kernel(ARM_CPU(first_cpu), machine->kernel_filename,
NRF51_SOC(soc)->flash_size);
}
static void microbit_machine_class_init(ObjectClass *oc, void *data)
{
MachineClass *mc = MACHINE_CLASS(oc);
mc->desc = "BBC micro:bit";
mc->init = microbit_init;
mc->max_cpus = 1;
}
static const TypeInfo microbit_info = {
.name = TYPE_MICROBIT_MACHINE,
.parent = TYPE_MACHINE,
.instance_size = sizeof(MicrobitMachineState),
.class_init = microbit_machine_class_init,
};
static void microbit_machine_init(void)
{
type_register_static(&microbit_info);
}
type_init(microbit_machine_init);