hw/avr/Kconfig - third_party/qemu - Git at Google

 config AVR_ATMEGA_MCU
     bool
     select AVR_TIMER16
     select AVR_USART
     select AVR_POWER

 config ARDUINO
     select AVR_ATMEGA_MCU
     select UNIMP
	config AVR_ATMEGA_MCU
	bool
	select AVR_TIMER16
	select AVR_USART
	select AVR_POWER

	config ARDUINO
	select AVR_ATMEGA_MCU
	select UNIMP