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) 63