[PATCH rc4 25/29] hw/avr: Add some Arduino boards

[Aleksandar Markovic]

From: Philippe Mathieu-Daudé <address@hidden>

Arduino boards are build with AVR chipsets.
Add some of the popular boards:

- Arduino Duemilanove
- Arduino Uno
- Arduino Mega

For more information:
  https://www.arduino.cc/en/Main/Products
  https://store.arduino.cc/arduino-genuino/most-popular

[AM: Remove word 'Atmel' from filenames and all elements of code]
Suggested-by: Aleksandar Markovic <address@hidden>

Reviewed-by: Igor Mammedov <address@hidden>
Signed-off-by: Philippe Mathieu-Daudé <address@hidden>
Signed-off-by: Richard Henderson <address@hidden>
Reviewed-by: Joaquin de Andres <address@hidden>
Signed-off-by: Aleksandar Markovic <address@hidden>
---
 MAINTAINERS          |   7 +++
 hw/avr/Kconfig       |   4 ++
 hw/avr/Makefile.objs |   1 +
 hw/avr/arduino.c     | 151 +++++++++++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 163 insertions(+)
 create mode 100644 hw/avr/arduino.c

diff --git a/MAINTAINERS b/MAINTAINERS
index d0a114b..97c8ef7 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -905,6 +905,13 @@ F: include/hw/timer/avr_timer16.h
 F: hw/misc/avr_power.c
 F: include/hw/misc/avr_power.h
 F: tests/acceptance/machine_avr6.py
+F: hw/avr/atmega.*
+
+Arduino
+M: Philippe Mathieu-Daudé <address@hidden>
+R: Sarah Harris <address@hidden>
+S: Maintained
+F: hw/avr/arduino.c
 
 CRIS Machines
 -------------
diff --git a/hw/avr/Kconfig b/hw/avr/Kconfig
index 9e6527e..d31298c 100644
--- a/hw/avr/Kconfig
+++ b/hw/avr/Kconfig
@@ -3,3 +3,7 @@ config AVR_ATMEGA_MCU
     select AVR_TIMER16
     select AVR_USART
     select AVR_POWER
+
+config ARDUINO
+    select AVR_ATMEGA_MCU
+    select UNIMP
diff --git a/hw/avr/Makefile.objs b/hw/avr/Makefile.objs
index af0fdde..4dca064 100644
--- a/hw/avr/Makefile.objs
+++ b/hw/avr/Makefile.objs
@@ -1,2 +1,3 @@
 obj-y += boot.o
 obj-$(CONFIG_AVR_ATMEGA_MCU) += atmega.o
+obj-$(CONFIG_ARDUINO) += arduino.o
diff --git a/hw/avr/arduino.c b/hw/avr/arduino.c
new file mode 100644
index 0000000..00d67c9
--- /dev/null
+++ b/hw/avr/arduino.c
@@ -0,0 +1,151 @@
+/*
+ * QEMU Arduino boards
+ *
+ * Copyright (c) 2019 Philippe Mathieu-Daudé
+ *
+ * This work is licensed under the terms of the GNU GPLv2 or later.
+ * See the COPYING file in the top-level directory.
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+/* TODO: Implement the use of EXTRAM */
+
+#include "qemu/osdep.h"
+#include "qapi/error.h"
+#include "hw/boards.h"
+#include "atmega.h"
+#include "boot.h"
+
+typedef struct ArduinoMachineState {
+    /*< private >*/
+    MachineState parent_obj;
+    /*< public >*/
+    AtmegaMcuState mcu;
+} ArduinoMachineState;
+
+typedef struct ArduinoMachineClass {
+    /*< private >*/
+    MachineClass parent_class;
+    /*< public >*/
+    const char *mcu_type;
+    uint64_t xtal_hz;
+} ArduinoMachineClass;
+
+#define TYPE_ARDUINO_MACHINE \
+        MACHINE_TYPE_NAME("arduino")
+#define ARDUINO_MACHINE(obj) \
+        OBJECT_CHECK(ArduinoMachineState, (obj), TYPE_ARDUINO_MACHINE)
+#define ARDUINO_MACHINE_CLASS(klass) \
+        OBJECT_CLASS_CHECK(ArduinoMachineClass, (klass), TYPE_ARDUINO_MACHINE)
+#define ARDUINO_MACHINE_GET_CLASS(obj) \
+        OBJECT_GET_CLASS(ArduinoMachineClass, (obj), TYPE_ARDUINO_MACHINE)
+
+static void arduino_machine_init(MachineState *machine)
+{
+    ArduinoMachineClass *amc = ARDUINO_MACHINE_GET_CLASS(machine);
+    ArduinoMachineState *ams = ARDUINO_MACHINE(machine);
+
+    sysbus_init_child_obj(OBJECT(machine), "mcu", &ams->mcu, sizeof(ams->mcu),
+                          amc->mcu_type);
+    object_property_set_uint(OBJECT(&ams->mcu), amc->xtal_hz,
+                             "xtal-frequency-hz", &error_abort);
+    object_property_set_bool(OBJECT(&ams->mcu), true, "realized",
+                             &error_abort);
+
+    if (machine->firmware) {
+        if (!avr_load_firmware(&ams->mcu.cpu, machine,
+                               &ams->mcu.flash, machine->firmware)) {
+            exit(1);
+        }
+    }
+}
+
+static void arduino_machine_class_init(ObjectClass *oc, void *data)
+{
+    MachineClass *mc = MACHINE_CLASS(oc);
+
+    mc->init = arduino_machine_init;
+    mc->default_cpus = 1;
+    mc->min_cpus = mc->default_cpus;
+    mc->max_cpus = mc->default_cpus;
+    mc->no_floppy = 1;
+    mc->no_cdrom = 1;
+    mc->no_parallel = 1;
+}
+
+static void arduino_duemilanove_class_init(ObjectClass *oc, void *data)
+{
+    MachineClass *mc = MACHINE_CLASS(oc);
+    ArduinoMachineClass *amc = ARDUINO_MACHINE_CLASS(oc);
+
+    /* https://www.arduino.cc/en/Main/ArduinoBoardDuemilanove */
+    mc->desc        = "Arduino Duemilanove (ATmega168)",
+    mc->alias       = "2009";
+    amc->mcu_type   = TYPE_ATMEGA168_MCU;
+    amc->xtal_hz    = 16 * 1000 * 1000;
+};
+
+static void arduino_uno_class_init(ObjectClass *oc, void *data)
+{
+    MachineClass *mc = MACHINE_CLASS(oc);
+    ArduinoMachineClass *amc = ARDUINO_MACHINE_CLASS(oc);
+
+    /* https://store.arduino.cc/arduino-uno-rev3 */
+    mc->desc        = "Arduino UNO (ATmega328P)";
+    mc->alias       = "uno";
+    amc->mcu_type   = TYPE_ATMEGA328_MCU;
+    amc->xtal_hz    = 16 * 1000 * 1000;
+};
+
+static void arduino_mega_class_init(ObjectClass *oc, void *data)
+{
+    MachineClass *mc = MACHINE_CLASS(oc);
+    ArduinoMachineClass *amc = ARDUINO_MACHINE_CLASS(oc);
+
+    /* https://www.arduino.cc/en/Main/ArduinoBoardMega */
+    mc->desc        = "Arduino Mega (ATmega1280)";
+    mc->alias       = "mega";
+    amc->mcu_type   = TYPE_ATMEGA1280_MCU;
+    amc->xtal_hz    = 16 * 1000 * 1000;
+};
+
+static void arduino_mega2560_class_init(ObjectClass *oc, void *data)
+{
+    MachineClass *mc = MACHINE_CLASS(oc);
+    ArduinoMachineClass *amc = ARDUINO_MACHINE_CLASS(oc);
+
+    /* https://store.arduino.cc/arduino-mega-2560-rev3 */
+    mc->desc        = "Arduino Mega 2560 (ATmega2560)";
+    mc->alias       = "mega2560";
+    amc->mcu_type   = TYPE_ATMEGA2560_MCU;
+    amc->xtal_hz    = 16 * 1000 * 1000; /* CSTCE16M0V53-R0 */
+};
+
+static const TypeInfo arduino_machine_types[] = {
+    {
+        .name          = MACHINE_TYPE_NAME("arduino-duemilanove"),
+        .parent        = TYPE_ARDUINO_MACHINE,
+        .class_init    = arduino_duemilanove_class_init,
+    }, {
+        .name          = MACHINE_TYPE_NAME("arduino-uno"),
+        .parent        = TYPE_ARDUINO_MACHINE,
+        .class_init    = arduino_uno_class_init,
+    }, {
+        .name          = MACHINE_TYPE_NAME("arduino-mega"),
+        .parent        = TYPE_ARDUINO_MACHINE,
+        .class_init    = arduino_mega_class_init,
+    }, {
+        .name          = MACHINE_TYPE_NAME("arduino-mega-2560-v3"),
+        .parent        = TYPE_ARDUINO_MACHINE,
+        .class_init    = arduino_mega2560_class_init,
+    }, {
+        .name           = TYPE_ARDUINO_MACHINE,
+        .parent         = TYPE_MACHINE,
+        .instance_size  = sizeof(ArduinoMachineState),
+        .class_size     = sizeof(ArduinoMachineClass),
+        .class_init     = arduino_machine_class_init,
+        .abstract       = true,
+    }
+};
+
+DEFINE_TYPES(arduino_machine_types)
-- 
2.7.4