menuconfig RT_USING_OFW
    bool "Using Open Firmware (OFW)"
    select RT_USING_ADT
    select RT_USING_ADT_REF
    select RT_USING_ADT_BITMAP
    depends on RT_USING_DM
    default n

config RT_USING_BUILTIN_FDT
    bool "Using builtin fdt in kernel"
    depends on RT_USING_OFW
    default n

config RT_BUILTIN_FDT_PATH
    string "Builtin fdt path, will rebuild if have dts"
    depends on RT_USING_BUILTIN_FDT
    default "rtthread.dtb"

config RT_FDT_EARLYCON_MSG_SIZE
    int "Earlycon message buffer size (KB)"
    depends on RT_USING_OFW
    default 128

config RT_USING_OFW_BUS_RANGES_NUMBER
    int "Max bus ranges number"
    depends on RT_USING_OFW
    default 8 if ARCH_CPU_64BIT
    default 4