嵌入式Linux内核的虚拟地址空间映射的实现

Implementation of the Virtual Address Space Mapping in Embeded Linux Kernel

针对嵌入式linux内核移植的需要,阐述了在嵌入式Linux内核中的虚拟地址空间映射的实现。分别从硬件,软件的角度分析了虚拟地址空间映射的基本原理,以及硬件和软件之间的各自功能和相互配合。同时,阐述了在805plus微处理器平台上虚拟地址空间映射的具体实现方案。实验表明,805plus平台在开启MMU模块后,能够在虚拟地址空间正确运行,完成内核初始化。

Aiming at the need of the porting of embedded linux kernel , an implementation scheme of the virtual address space mapping in the embedded linux kernel is present. The fundamental principle of the virtual address space mapping was introduced both from the software and hardware point views. This paper also state＇s the practical implementation of the virtual address mapping on the 805 plus platform. The result of the experiment shows that the platform can perform the addressing and system initialization correctly when the MMU is turn on.