4)Device Drivers----->
Character devices--->
[*]/dev/kmem virtual device support
[*]Legacy(BSD) PTY support
Block devices--->
<>Loopback device support
<>RAW block device support
5)保存退出
10.编译
make zImage，在arch/arm/boot下生成编译好的可执行程序：zImage vivi一般采用此类型的内核
make uImage，在arch/arm/boot下生成编译好的可执行程序：UImage u-boot一般采用此类型的内核