如果你编过kernel就知道mkimage这个工具, 它是u-boot自带的一个工具, 它就是告诉u-boot把kernel的镜像解压到内存的指定地方然后在这个地方启动,
Usage: mkimage
-l ==> list image header information
mkimage_vphone [-x] -A arch -O os -T type -C comp -a addr -e ep -n name -d data_file[:data_file...] image
-A ==> set architecture to 'arch'
-O ==> set operating system to 'os'
-T ==> set image type to 'type'
-C ==> set compression type 'comp'
-a ==> set load address to 'addr' (hex)
-e ==> set entry point to 'ep' (hex)
-n ==> set image name to 'name'
-d ==> use image data from 'datafile'
-x ==> set XIP (execute in place)
[root@localhost fuzhou]#