介绍ARM开发平台的启动过程，同时该引导程序也可其他章节程序引导的示例程序。本程序主要为了让读者能够清晰理解启动程序的基本架构组成部分以及掌握ARM引导程序的编写方法。-Describes the startup process ARM development platform, while the other sections of the bootstrap program guide may also sample program. This procedure is mainly in