hw/arm/stm32vldiscovery.c

/*
 * ST STM32VLDISCOVERY machine
 *
 * Copyright (c) 2021 Alexandre Iooss <erdnaxe@crans.org>
 * Copyright (c) 2014 Alistair Francis <alistair@alistair23.me>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

#include "qemu/osdep.h"
#include "qapi/error.h"
#include "hw/boards.h"
#include "hw/qdev-properties.h"
#include "qemu/error-report.h"
#include "hw/arm/stm32f100_soc.h"
#include "hw/arm/boot.h"

/* stm32vldiscovery implementation is derived from netduinoplus2 */

/* Main SYSCLK frequency in Hz (24MHz) */
#define SYSCLK_FRQ 24000000ULL

static void stm32vldiscovery_init(MachineState *machine)
{
    DeviceState *dev;

    /*
     * TODO: ideally we would model the SoC RCC and let it handle
     * system_clock_scale, including its ability to define different
     * possible SYSCLK sources.
     */
    system_clock_scale = NANOSECONDS_PER_SECOND / SYSCLK_FRQ;

    dev = qdev_new(TYPE_STM32F100_SOC);
    qdev_prop_set_string(dev, "cpu-type", ARM_CPU_TYPE_NAME("cortex-m3"));
    sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);

    armv7m_load_kernel(ARM_CPU(first_cpu),
                       machine->kernel_filename,
                       FLASH_SIZE);
}

static void stm32vldiscovery_machine_init(MachineClass *mc)
{
    mc->desc = "ST STM32VLDISCOVERY (Cortex-M3)";
    mc->init = stm32vldiscovery_init;
}

DEFINE_MACHINE("stm32vldiscovery", stm32vldiscovery_machine_init)