LXR qemu/hw/arm/netduinoplus2.c

   1/*
   2 * Netduino Plus 2 Machine Model
   3 *
   4 * Copyright (c) 2014 Alistair Francis <alistair@alistair23.me>
   5 *
   6 * Permission is hereby granted, free of charge, to any person obtaining a copy
   7 * of this software and associated documentation files (the "Software"), to deal
   8 * in the Software without restriction, including without limitation the rights
   9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10 * copies of the Software, and to permit persons to whom the Software is
  11 * furnished to do so, subject to the following conditions:
  12 *
  13 * The above copyright notice and this permission notice shall be included in
  14 * all copies or substantial portions of the Software.
  15 *
  16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22 * THE SOFTWARE.
  23 */
  24
  25#include "qemu/osdep.h"
  26#include "qapi/error.h"
  27#include "hw/boards.h"
  28#include "hw/qdev-properties.h"
  29#include "qemu/error-report.h"
  30#include "hw/arm/stm32f405_soc.h"
  31#include "hw/arm/boot.h"
  32
  33/* Main SYSCLK frequency in Hz (168MHz) */
  34#define SYSCLK_FRQ 168000000ULL
  35
  36static void netduinoplus2_init(MachineState *machine)
  37{
  38    DeviceState *dev;
  39
  40    /*
  41     * TODO: ideally we would model the SoC RCC and let it handle
  42     * system_clock_scale, including its ability to define different
  43     * possible SYSCLK sources.
  44     */
  45    system_clock_scale = NANOSECONDS_PER_SECOND / SYSCLK_FRQ;
  46
  47    dev = qdev_new(TYPE_STM32F405_SOC);
  48    qdev_prop_set_string(dev, "cpu-type", ARM_CPU_TYPE_NAME("cortex-m4"));
  49    sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
  50
  51    armv7m_load_kernel(ARM_CPU(first_cpu),
  52                       machine->kernel_filename,
  53                       FLASH_SIZE);
  54}
  55
  56static void netduinoplus2_machine_init(MachineClass *mc)
  57{
  58    mc->desc = "Netduino Plus 2 Machine";
  59    mc->init = netduinoplus2_init;
  60}
  61
  62DEFINE_MACHINE("netduinoplus2", netduinoplus2_machine_init)
  63