xref: /openbmc/qemu/hw/arm/olimex-stm32-h405.c (revision f614acb7450282a119d85d759f27eae190476058)

/*
 * ST STM32VLDISCOVERY machine
 * Olimex STM32-H405 machine
 *
 * Copyright (c) 2022 Felipe Balbi <balbi@kernel.org>
 *
 * 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 "hw/qdev-clock.h"
#include "qemu/error-report.h"
#include "hw/arm/stm32f405_soc.h"
#include "hw/arm/boot.h"

/* olimex-stm32-h405 implementation is derived from netduinoplus2 */

/* Main SYSCLK frequency in Hz (168MHz) */
#define SYSCLK_FRQ 168000000ULL

static void olimex_stm32_h405_init(MachineState *machine)
{
    DeviceState *dev;
    Clock *sysclk;

    /* This clock doesn't need migration because it is fixed-frequency */
    sysclk = clock_new(OBJECT(machine), "SYSCLK");
    clock_set_hz(sysclk, SYSCLK_FRQ);

    dev = qdev_new(TYPE_STM32F405_SOC);
    object_property_add_child(OBJECT(machine), "soc", OBJECT(dev));
    qdev_connect_clock_in(dev, "sysclk", sysclk);
    sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);

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

static void olimex_stm32_h405_machine_init(MachineClass *mc)
{
    static const char * const valid_cpu_types[] = {
        ARM_CPU_TYPE_NAME("cortex-m4"),
        NULL
    };

    mc->desc = "Olimex STM32-H405 (Cortex-M4)";
    mc->init = olimex_stm32_h405_init;
    mc->valid_cpu_types = valid_cpu_types;

    /* SRAM pre-allocated as part of the SoC instantiation */
    mc->default_ram_size = 0;
}

DEFINE_MACHINE("olimex-stm32-h405", olimex_stm32_h405_machine_init)