1CONFIG_ARM_ARCH_TIMER=y 2CONFIG_TIMER_READS_ITS_FREQUENCY_AT_RUNTIME=y 3CONFIG_QEMU_ICOUNT=n 4CONFIG_ARMV8_A_NS=y 5 6# Cache management 7CONFIG_CACHE_MANAGEMENT=y 8 9# Enable UART driver 10CONFIG_SERIAL=y 11 12# Enable console 13CONFIG_CONSOLE=y 14CONFIG_UART_CONSOLE=y 15 16# Enable serial port 17CONFIG_UART_INTERRUPT_DRIVEN=y 18