此文档为清华大学资深教授所编写的嵌入式ARM架构的内部讲义，对于从事ARM linux硬件开发或软件编程的工程师具有重要的指导作用!-This document was prepared by senior professor of Tsinghua University, ARM-based embedded within the notes, in ARM linux for hardware development or software programming has an important role in guiding the engineers!