menuconfig U_BOOT bool prompt "U-Boot " config U_BOOT_VERSION string depends on U_BOOT default 1.2.0 prompt "U-Boot version" help Enter the Uboot version you want to build. Usally something like "1.2.0" config U_BOOT_SERIES depends on U_BOOT prompt "patch series file" string default "series${PTXDIST_PLATFORMSUFFIX}" help This entry specifies a patch series file which has to live in the kernel patches directory: The series file contains lines with names of patch files which are then being applied to the kernel. config U_BOOT_CONFIG string depends on U_BOOT prompt "U-Boot config target" help The U-Boot make config target. Usually something like "yourbox_config". See Uboot's main Makefile for possible configuration targets.