The Research On Embedded Linux And The Application In Net Information Device

With the development of Computer technology and Communication technology in Information times and the aboard application of Internet, it is clear that 3C (Computer, Communication and Consumer) will converge in the near future which will lead the focus of Computer Industry from the Compute product to information product. The embedded system and embeded OS has approached a remarkable development.This thesis, firstly, summarizes the structure and performance of the embedded system, then introduces the research of embedded technology at domestic and international. On the base of synthetic comparing all kinds of Embedded Operating System exiting today, the paper analyses the excellence and limitation of using Linux to build Embedded System. In order to implement a simple embedded Linux running in embedded storage devices, the thesis presents correlative methods and key skills in details.In the embedded system, the filesystem is an important part of it. With the price of hardware goes down as well as the capability is higher and higher, the embedded filesystem becomes more improtant than any time before. For the embedded system, unexpected power-off and other mistakes often cause a corruption of the filesystem and lost of data. Therefore, based on the analysising the embedded filesystem, this paper probes into the method of designing MTD device driver under linux and adapted a new filesystem based on Flash. Finally, according to the speciality proportion of the Flash storage devices, the paper emphasizes the realizition of JFFS and the embedded linux on DiskOnChip, primarily discussed how the DiskOnChip drive supporting JFFS and the new project of storage.The Embedded Linux System, together with all the device driver and application software, which finally have been stably running in 16M Flash. ShengJi, which is a net information production developed by eThink Technology Co.LTD, has applied the embedded linux system. The methods reported here could be beneficial to the research on embedded system and the application in embedded Linux.