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
  36 static 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
  56 static void netduinoplus2_machine_init(MachineClass *mc)
  57 {
  58     mc->desc = "Netduino Plus 2 Machine (Cortex-M4)";
  59     mc->init = netduinoplus2_init;
  60 }
  61
  62 DEFINE_MACHINE("netduinoplus2", netduinoplus2_machine_init)