LXR qemu/hw/avr/arduino.c

   1/*
   2 * QEMU Arduino boards
   3 *
   4 * Copyright (c) 2019-2020 Philippe Mathieu-Daudé
   5 *
   6 * This work is licensed under the terms of the GNU GPLv2 or later.
   7 * See the COPYING file in the top-level directory.
   8 * SPDX-License-Identifier: GPL-2.0-or-later
   9 */
  10
  11/* TODO: Implement the use of EXTRAM */
  12
  13#include "qemu/osdep.h"
  14#include "qapi/error.h"
  15#include "atmega.h"
  16#include "boot.h"
  17#include "qom/object.h"
  18
  19struct ArduinoMachineState {
  20    /*< private >*/
  21    MachineState parent_obj;
  22    /*< public >*/
  23    AtmegaMcuState mcu;
  24};
  25typedef struct ArduinoMachineState ArduinoMachineState;
  26
  27struct ArduinoMachineClass {
  28    /*< private >*/
  29    MachineClass parent_class;
  30    /*< public >*/
  31    const char *mcu_type;
  32    uint64_t xtal_hz;
  33};
  34typedef struct ArduinoMachineClass ArduinoMachineClass;
  35
  36#define TYPE_ARDUINO_MACHINE \
  37        MACHINE_TYPE_NAME("arduino")
  38DECLARE_OBJ_CHECKERS(ArduinoMachineState, ArduinoMachineClass,
  39                     ARDUINO_MACHINE, TYPE_ARDUINO_MACHINE)
  40
  41static void arduino_machine_init(MachineState *machine)
  42{
  43    ArduinoMachineClass *amc = ARDUINO_MACHINE_GET_CLASS(machine);
  44    ArduinoMachineState *ams = ARDUINO_MACHINE(machine);
  45
  46    object_initialize_child(OBJECT(machine), "mcu", &ams->mcu, amc->mcu_type);
  47    object_property_set_uint(OBJECT(&ams->mcu), "xtal-frequency-hz",
  48                             amc->xtal_hz, &error_abort);
  49    sysbus_realize(SYS_BUS_DEVICE(&ams->mcu), &error_abort);
  50
  51    if (machine->firmware) {
  52        if (!avr_load_firmware(&ams->mcu.cpu, machine,
  53                               &ams->mcu.flash, machine->firmware)) {
  54            exit(1);
  55        }
  56    }
  57}
  58
  59static void arduino_machine_class_init(ObjectClass *oc, void *data)
  60{
  61    MachineClass *mc = MACHINE_CLASS(oc);
  62
  63    mc->init = arduino_machine_init;
  64    mc->default_cpus = 1;
  65    mc->min_cpus = mc->default_cpus;
  66    mc->max_cpus = mc->default_cpus;
  67    mc->no_floppy = 1;
  68    mc->no_cdrom = 1;
  69    mc->no_parallel = 1;
  70}
  71
  72static void arduino_duemilanove_class_init(ObjectClass *oc, void *data)
  73{
  74    MachineClass *mc = MACHINE_CLASS(oc);
  75    ArduinoMachineClass *amc = ARDUINO_MACHINE_CLASS(oc);
  76
  77    /*
  78     * https://www.arduino.cc/en/Main/ArduinoBoardDuemilanove
  79     * https://www.arduino.cc/en/uploads/Main/arduino-duemilanove-schematic.pdf
  80     */
  81    mc->desc        = "Arduino Duemilanove (ATmega168)",
  82    mc->alias       = "2009";
  83    amc->mcu_type   = TYPE_ATMEGA168_MCU;
  84    amc->xtal_hz    = 16 * 1000 * 1000;
  85};
  86
  87static void arduino_uno_class_init(ObjectClass *oc, void *data)
  88{
  89    MachineClass *mc = MACHINE_CLASS(oc);
  90    ArduinoMachineClass *amc = ARDUINO_MACHINE_CLASS(oc);
  91
  92    /*
  93     * https://store.arduino.cc/arduino-uno-rev3
  94     * https://www.arduino.cc/en/uploads/Main/arduino-uno-schematic.pdf
  95     */
  96    mc->desc        = "Arduino UNO (ATmega328P)";
  97    mc->alias       = "uno";
  98    amc->mcu_type   = TYPE_ATMEGA328_MCU;
  99    amc->xtal_hz    = 16 * 1000 * 1000;
 100};
 101
 102static void arduino_mega_class_init(ObjectClass *oc, void *data)
 103{
 104    MachineClass *mc = MACHINE_CLASS(oc);
 105    ArduinoMachineClass *amc = ARDUINO_MACHINE_CLASS(oc);
 106
 107    /*
 108     * https://www.arduino.cc/en/Main/ArduinoBoardMega
 109     * https://www.arduino.cc/en/uploads/Main/arduino-mega2560-schematic.pdf
 110     */
 111    mc->desc        = "Arduino Mega (ATmega1280)";
 112    mc->alias       = "mega";
 113    amc->mcu_type   = TYPE_ATMEGA1280_MCU;
 114    amc->xtal_hz    = 16 * 1000 * 1000;
 115};
 116
 117static void arduino_mega2560_class_init(ObjectClass *oc, void *data)
 118{
 119    MachineClass *mc = MACHINE_CLASS(oc);
 120    ArduinoMachineClass *amc = ARDUINO_MACHINE_CLASS(oc);
 121
 122    /*
 123     * https://store.arduino.cc/arduino-mega-2560-rev3
 124     * https://www.arduino.cc/en/uploads/Main/arduino-mega2560_R3-sch.pdf
 125     */
 126    mc->desc        = "Arduino Mega 2560 (ATmega2560)";
 127    mc->alias       = "mega2560";
 128    amc->mcu_type   = TYPE_ATMEGA2560_MCU;
 129    amc->xtal_hz    = 16 * 1000 * 1000; /* CSTCE16M0V53-R0 */
 130};
 131
 132static const TypeInfo arduino_machine_types[] = {
 133    {
 134        .name          = MACHINE_TYPE_NAME("arduino-duemilanove"),
 135        .parent        = TYPE_ARDUINO_MACHINE,
 136        .class_init    = arduino_duemilanove_class_init,
 137    }, {
 138        .name          = MACHINE_TYPE_NAME("arduino-uno"),
 139        .parent        = TYPE_ARDUINO_MACHINE,
 140        .class_init    = arduino_uno_class_init,
 141    }, {
 142        .name          = MACHINE_TYPE_NAME("arduino-mega"),
 143        .parent        = TYPE_ARDUINO_MACHINE,
 144        .class_init    = arduino_mega_class_init,
 145    }, {
 146        .name          = MACHINE_TYPE_NAME("arduino-mega-2560-v3"),
 147        .parent        = TYPE_ARDUINO_MACHINE,
 148        .class_init    = arduino_mega2560_class_init,
 149    }, {
 150        .name           = TYPE_ARDUINO_MACHINE,
 151        .parent         = TYPE_MACHINE,
 152        .instance_size  = sizeof(ArduinoMachineState),
 153        .class_size     = sizeof(ArduinoMachineClass),
 154        .class_init     = arduino_machine_class_init,
 155        .abstract       = true,
 156    }
 157};
 158
 159DEFINE_TYPES(arduino_machine_types)
 160