pxa270对应的uboot程序，能够引导pxa270开发板启动-uboot corresponding pxa270 procedures, be able to guide the development board to start pxa270

嵌入式编程-ARM-PXA270-EELiod 基础实验-触摸屏 触摸屏驱动程序，C运行环境已确定。-Embedded programming-ARM-PXA270-EELiod basic experiment- the touch screen touch screen driver, C runtime environment have been identified.