(1)#cd ../rootfs/
#ln -s ./bin/busybox init 创建软链接
(2)进入Linux内核
#make menuconfig
General setup-->Initial RAM filesystem and RAM disk (initramfs/initrd) support
选择上该选项
General setup-->Initramfs source file(s) 输入rootfs的路径
(3)重新编译内核
(4)进入u-boot设置环境变量并下载启动内核
#setenv bootargs noinitrd console=ttySAC0,115200
#save
#tftp c0008000 uImage
#bootm c0008000