Transplant of Linux and Embedded System of Boot Loader and LED Driver

The widely used 32-bits embedded CPU not only satisfies the need of high-speed provides processing, but also a platform which makes the embedded speedily systems run steadily, and credibly. The use of the embedded operating system greatly accelerates the software development and enhances the system´s stability and security. It plays an important role in the embedded field. As its advantage of price, tiny kernel and rich resource, Linux has been widely used in embedded system than the Windows in “black”. The new coming 2.6 kernel has a lot of specialties for embedded applications, and also has some improving in arithmetic of scheduling. All these make Linux to be a hot point in embedded system. This paper introduced the S3C2410x CPU and the system structure. Based on this, it mainly researched the development of system software. Firstly the paper described how to establish the cross compiling environment, after that analyzed the working process of the embedded boot loader, and based on the analyses of the Linux kernel structure the paper discussed the methods of kernel porting and configuration. Then the paper presented theory of Linux device drivers, and designed several key device drivers, and gave the detail implement scheme.