choice prompt "System type" default BFIN548_EZKIT help Select your board! config BFIN548_EZKIT bool "BF548-EZKIT" help BFIN548-EZKIT board support. config BFIN548_BLUETECHNIX_CM bool "Bluetechnix CM-BF548" depends on (BF548) help CM-BF548 support for DEV-Board. endchoice