73 lines
2.3 KiB
C
73 lines
2.3 KiB
C
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/*
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* B-L475E-IOT01A Discovery Kit machine
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* (B-L475E-IOT01A IoT Node)
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*
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* Copyright (c) 2023 Arnaud Minier <arnaud.minier@telecom-paris.fr>
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* Copyright (c) 2023 Inès Varhol <ines.varhol@telecom-paris.fr>
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*
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* This work is heavily inspired by the netduinoplus2 by Alistair Francis.
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* Original code is licensed under the MIT License:
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*
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* Copyright (c) 2014 Alistair Francis <alistair@alistair23.me>
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*/
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/*
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* The reference used is the STMicroElectronics UM2153 User manual
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* Discovery kit for IoT node, multi-channel communication with STM32L4.
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* https://www.st.com/en/evaluation-tools/b-l475e-iot01a.html#documentation
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*/
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#include "qemu/osdep.h"
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#include "qapi/error.h"
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#include "hw/boards.h"
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#include "hw/qdev-properties.h"
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#include "hw/qdev-clock.h"
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#include "qemu/error-report.h"
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#include "hw/arm/stm32l4x5_soc.h"
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#include "hw/arm/boot.h"
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/* Main SYSCLK frequency in Hz (80MHz) */
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#define MAIN_SYSCLK_FREQ_HZ 80000000ULL
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static void b_l475e_iot01a_init(MachineState *machine)
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{
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const Stm32l4x5SocClass *sc;
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DeviceState *dev;
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Clock *sysclk;
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/* This clock doesn't need migration because it is fixed-frequency */
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sysclk = clock_new(OBJECT(machine), "SYSCLK");
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clock_set_hz(sysclk, MAIN_SYSCLK_FREQ_HZ);
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dev = qdev_new(TYPE_STM32L4X5XG_SOC);
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object_property_add_child(OBJECT(machine), "soc", OBJECT(dev));
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qdev_connect_clock_in(dev, "sysclk", sysclk);
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sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
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sc = STM32L4X5_SOC_GET_CLASS(dev);
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armv7m_load_kernel(ARM_CPU(first_cpu),
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machine->kernel_filename,
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0, sc->flash_size);
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}
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static void b_l475e_iot01a_machine_init(MachineClass *mc)
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{
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static const char *machine_valid_cpu_types[] = {
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ARM_CPU_TYPE_NAME("cortex-m4"),
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NULL
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};
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mc->desc = "B-L475E-IOT01A Discovery Kit (Cortex-M4)";
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mc->init = b_l475e_iot01a_init;
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mc->valid_cpu_types = machine_valid_cpu_types;
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/* SRAM pre-allocated as part of the SoC instantiation */
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mc->default_ram_size = 0;
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}
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DEFINE_MACHINE("b-l475e-iot01a", b_l475e_iot01a_machine_init)
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