Commit b148ed46 authored by Joel Stanley's avatar Joel Stanley Committed by Peter Maydell
Browse files

arm: Add BBC micro:bit machine 

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: default avatarStefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: default avatarJoel Stanley <joel@jms.id.au>
Message-id: 20180831220920.27113-4-joel@jms.id.au
Reviewed-by: default avatarPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: default avatarPeter Maydell <peter.maydell@linaro.org>
parent 673b2d42

hw/arm/Makefile.objs

+1 −1
Original line number Diff line number Diff line
@@ -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

hw/arm/microbit.c

0 → 100644
+67 −0
Original line number Diff line number Diff line 
/*

 * 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);