Implementing And Optimizing Of VxWorks Board Support Package Based On Loongson3A2H Platform

With the penetration of various sources of information interconnection and fusion, limit, isolation and other simple safety strategy in China in the past has been difficult to take the information assurance, chip localization radical measures the hardware level will become mainstream. To realize the localization of chip is the only way which must be passed of China’s information security.Loongson3A+2H processor and the bridge is a set of universal computing platform of domestic independent intellectual property rights, VxWorks operating system design and development of Wind River is an embedded real-time operating system. The main content of this thesis is to deeply understand the characteristics of Loongson3A+2H processor hardware platform, including the architecture of the MIPS address space and mapping, the processor interrupt configuration and distribution, address allocation and routing function of graphics controller and processor. According to the VxWorks BSP function.tissue structure and the processes of BSP modifie the main file. Based on the minimum system, transplant VxWorks operating system on Loongson3A+2H platform and Implement interrupt system transplant device driver in the BSP. Due to the existing application needing more memory and requiring more fluent human-computer interaction, so that this thesis Study on large memory space and graphic display speed and optimize these in BSP. Memory size increased from256M to1G and GPU is19times than the CPU in bitBlt.Transplanting VxWorks operating system on Loongson3A+2H platform can provide a good software and hardware environment for the development of high performance products and has important practical value in the popularization of the Loongson processor. In addition, provide reference for domestic embedded operating system and implemente localization of software and hardware. These can help to improve the ability of national defense security controlled field in China and create more products with independent intellectual property rights.