mainmenu "RT-Thread Project Configuration" config BSP_DIR string option env="BSP_ROOT" default "." config RTT_DIR string option env="RTT_ROOT" default "../../.." config PKGS_DIR string option env="PKGS_ROOT" default "packages" source "$RTT_DIR/Kconfig" source "$PKGS_DIR/Kconfig" source "$BSP_DIR/driver/Kconfig" config SOC_RK3568 bool select ARCH_ARMV8 select ARCH_CPU_64BIT select RT_USING_CACHE select RT_USING_COMPONENTS_INIT select RT_USING_USER_MAIN select ARCH_ARM_BOOTWITH_FLUSH_CACHE default y