hw/arm/b-l475e-iot01a.c

   1 /*
   2  * B-L475E-IOT01A Discovery Kit machine
   3  * (B-L475E-IOT01A IoT Node)
   4  *
   5  * Copyright (c) 2023 Arnaud Minier <arnaud.minier@telecom-paris.fr>
   6  * Copyright (c) 2023 Inès Varhol <ines.varhol@telecom-paris.fr>
   7  *
   8  * SPDX-License-Identifier: GPL-2.0-or-later
   9  *
  10  * This work is licensed under the terms of the GNU GPL, version 2 or later.
  11  * See the COPYING file in the top-level directory.
  12  *
  13  * This work is heavily inspired by the netduinoplus2 by Alistair Francis.
  14  * Original code is licensed under the MIT License:
  15  *
  16  * Copyright (c) 2014 Alistair Francis <alistair@alistair23.me>
  17  */
  18
  19 /*
  20  * The reference used is the STMicroElectronics UM2153 User manual
  21  * Discovery kit for IoT node, multi-channel communication with STM32L4.
  22  * https://www.st.com/en/evaluation-tools/b-l475e-iot01a.html#documentation
  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/stm32l4x5_soc.h"
  31 #include "hw/arm/boot.h"
  32
  33 /* B-L475E-IOT01A implementation is derived from netduinoplus2 */
  34
  35 static void b_l475e_iot01a_init(MachineState *machine)
  36 {
  37     const Stm32l4x5SocClass *sc;
  38     DeviceState *dev;
  39
  40     dev = qdev_new(TYPE_STM32L4X5XG_SOC);
  41     object_property_add_child(OBJECT(machine), "soc", OBJECT(dev));
  42     sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
  43
  44     sc = STM32L4X5_SOC_GET_CLASS(dev);
  45     armv7m_load_kernel(ARM_CPU(first_cpu),
  46                        machine->kernel_filename,
  47                        0, sc->flash_size);
  48 }
  49
  50 static void b_l475e_iot01a_machine_init(MachineClass *mc)
  51 {
  52     static const char *machine_valid_cpu_types[] = {
  53         ARM_CPU_TYPE_NAME("cortex-m4"),
  54         NULL
  55     };
  56     mc->desc = "B-L475E-IOT01A Discovery Kit (Cortex-M4)";
  57     mc->init = b_l475e_iot01a_init;
  58     mc->valid_cpu_types = machine_valid_cpu_types;
  59
  60     /* SRAM pre-allocated as part of the SoC instantiation */
  61     mc->default_ram_size = 0;
  62 }
  63
  64 DEFINE_MACHINE("b-l475e-iot01a", b_l475e_iot01a_machine_init)