LXR qemu/hw/arm/microbit.c

   1/*
   2 * BBC micro:bit machine
   3 * http://tech.microbit.org/hardware/
   4 *
   5 * Copyright 2018 Joel Stanley <joel@jms.id.au>
   6 *
   7 * This code is licensed under the GPL version 2 or later.  See
   8 * the COPYING file in the top-level directory.
   9 */
  10
  11#include "qemu/osdep.h"
  12#include "qapi/error.h"
  13#include "hw/boards.h"
  14#include "hw/arm/arm.h"
  15#include "sysemu/sysemu.h"
  16#include "exec/address-spaces.h"
  17
  18#include "hw/arm/nrf51_soc.h"
  19
  20typedef struct {
  21    MachineState parent;
  22
  23    NRF51State nrf51;
  24} MicrobitMachineState;
  25
  26#define TYPE_MICROBIT_MACHINE MACHINE_TYPE_NAME("microbit")
  27
  28#define MICROBIT_MACHINE(obj) \
  29    OBJECT_CHECK(MicrobitMachineState, obj, TYPE_MICROBIT_MACHINE)
  30
  31static void microbit_init(MachineState *machine)
  32{
  33    MicrobitMachineState *s = MICROBIT_MACHINE(machine);
  34    MemoryRegion *system_memory = get_system_memory();
  35    Object *soc = OBJECT(&s->nrf51);
  36
  37    sysbus_init_child_obj(OBJECT(machine), "nrf51", soc, sizeof(s->nrf51),
  38                          TYPE_NRF51_SOC);
  39    qdev_prop_set_chr(DEVICE(&s->nrf51), "serial0", serial_hd(0));
  40    object_property_set_link(soc, OBJECT(system_memory), "memory",
  41                             &error_fatal);
  42    object_property_set_bool(soc, true, "realized", &error_fatal);
  43
  44    armv7m_load_kernel(ARM_CPU(first_cpu), machine->kernel_filename,
  45                       NRF51_SOC(soc)->flash_size);
  46}
  47
  48static void microbit_machine_class_init(ObjectClass *oc, void *data)
  49{
  50    MachineClass *mc = MACHINE_CLASS(oc);
  51
  52    mc->desc = "BBC micro:bit";
  53    mc->init = microbit_init;
  54    mc->max_cpus = 1;
  55}
  56
  57static const TypeInfo microbit_info = {
  58    .name = TYPE_MICROBIT_MACHINE,
  59    .parent = TYPE_MACHINE,
  60    .instance_size = sizeof(MicrobitMachineState),
  61    .class_init = microbit_machine_class_init,
  62};
  63
  64static void microbit_machine_init(void)
  65{
  66    type_register_static(&microbit_info);
  67}
  68
  69type_init(microbit_machine_init);
  70