关于嵌入式引导技术的设计和应用，其中有几篇是关于uboot的，这些教程都是原作者辛苦的劳动结晶，凝聚成一篇篇工程笔记，特此感谢!-Guidance on embedded technology design and application, which has several on uboot, these tutorials are the original author, the crystallization of hard labor, gather into a chapter pro