由DTS文件生成DTB 文件，DTB是U-BOOT用来传递给LINUX内核的参数的一种文件形式。 DTB:device tree blob
1，在内核中寻找：arch/arm/boot/dts/digilent_zed.dts
2，生成EXT3 文件系统的设备树 ./scripts/dtc/dtc -I dts -O dtb -o ../devicetree_ext3.dtb arch/arm/boot/dts/digilent-zed.dts
3, 生成RAMDISC的设备树文件。修改arch/arm/boot/dts/digilent_zed.dts 。
4，./scripts/dtc/dtc -I dts -O dtb -o ../devicetree_ram8m.dtb arch/arm/boot/dts/digilent-zed.dts