choice prompt "Boot Type" default XMEDIA_UBOOT_SUPPORT config XMEDIA_UBOOT_SUPPORT bool "uboot" endchoice choice prompt "U-boot Version" depends on XMEDIA_UBOOT_SUPPORT default XMEDIA_UBOOT_SUPPORT_2020_01 config XMEDIA_UBOOT_SUPPORT_2020_01 bool "u-boot-2020.01" endchoice config XMEDIA_UBOOT_VER string default "u-boot-2020.01" if XMEDIA_UBOOT_SUPPORT_2020_01 config XMEDIA_BOOT_DEFCONFIG prompt "Boot Defconfig" string help Input config file for u-boot. Such as xxxxx_defconfig. Config files are located in u-boot source: u-boot/configs config XMEDIA_BOOT_ENV_STARTADDR hex "Environment Variables Partition Start Address" default 0x80000 help The start address of the partition you want to save your envioronment variables. It should be alined with blocksize for Nand/Spinand/Spinor. config XMEDIA_BOOT_ENV_SIZE hex "Environment Variables Image Size" default 0x40000 help The size of the Environment Variables Image. Default value is 64k. config XMEDIA_DDR_TRAINING_SUPPORT bool "DDR Training Command Support" default y help Say y here if you want to use DDR training command in boot for testing DDR window. menuconfig XMEDIA_BOOT_APP_SUPPORT bool "APP Support" default y