tests/acceptance: Test the Arduino MEGA2560 board

The test is based on
https://github.com/seharris/qemu-avr-tests/tree/master/free-rtos/Demo
demo which. If working correctly, prints 'ABCDEFGHIJKLMNOPQRSTUVWX' out.
it also demostrates that timer and IRQ are working

As the path name demonstrates, the FreeRTOS tests target a
board based on a ATMega2560 MCU. We have one, the Arduino
MEGA2560.

Complementary documentation:

https://feilipu.me/2012/01/15/ethermega-arduino-mega-2560-and-freertos/
https://feilipu.me/2015/11/24/arduino_freertos/ (see 'Compatibility')

Signed-off-by: Michael Rolnik <[email protected]>
Signed-off-by: Philippe Mathieu-Daudé <[email protected]>
[rth: Squash multiple avocado fixups from f4bug]
Signed-off-by: Richard Henderson <[email protected]>
Signed-off-by: Aleksandar Markovic <[email protected]>
Tested-by: Richard Henderson <[email protected]>
Tested-by: Philippe Mathieu-Daudé <[email protected]>
Acked-by: Thomas Huth <[email protected]>
Reviewed-by: Philippe Mathieu-Daudé <[email protected]>

Author: michaelrolnik

MAINTAINERS

@@ -173,6 +173,7 @@ R: Sarah Harris <[email protected]>
 S: Maintained
 F: gdb-xml/avr-cpu.xml
 F: target/avr/
+F: tests/acceptance/machine_avr6.py
 
 CRIS TCG CPUs
 M: Edgar E. Iglesias <[email protected]>

tests/acceptance/machine_avr6.py

@@ -0,0 +1,50 @@
+#
+# QEMU AVR acceptance tests
+#
+# Copyright (c) 2019-2020 Michael Rolnik <[email protected]>
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+import time
+
+from avocado_qemu import Test
+
+class AVR6Machine(Test):
+    timeout = 5
+
+    def test_freertos(self):
+        """
+        :avocado: tags=arch:avr
+        :avocado: tags=machine:arduino-mega-2560-v3
+        """
+        """
+        https://github.com/seharris/qemu-avr-tests/raw/master/free-rtos/Demo/AVR_ATMega2560_GCC/demo.elf
+        constantly prints out 'ABCDEFGHIJKLMNOPQRSTUVWXABCDEFGHIJKLMNOPQRSTUVWX'
+        """
+        rom_url = ('https://github.com/seharris/qemu-avr-tests'
+                   '/raw/36c3e67b8755dcf/free-rtos/Demo'
+                   '/AVR_ATMega2560_GCC/demo.elf')
+        rom_hash = '7eb521f511ca8f2622e0a3c5e8dd686efbb911d4'
+        rom_path = self.fetch_asset(rom_url, asset_hash=rom_hash)
+
+        self.vm.add_args('-bios', rom_path)
+        self.vm.add_args('-nographic')
+        self.vm.launch()
+
+        time.sleep(2)
+        self.vm.shutdown()
+
+        self.assertIn('ABCDEFGHIJKLMNOPQRSTUVWXABCDEFGHIJKLMNOPQRSTUVWX',
+                self.vm.get_log())