Design and Implementation of BIOS Based on Godson-3 A

摘要

Godson-3A as the latest multi-core generation of Godson microprocessor family targets to the low cost servers and high-performance computers. As Godson-3A adopts the scalable mesh of crossbar topology and provides extensive I/O support based on crossbars, we can implement the architectures of servers or computers in various ways. But for each design, the proper design and implementation of BIOS plays an important role in making full use of flexibility provided by the hardware design of Godson-3A. This paper introduces the two-level scalable architecture implemented inside Godson-3A, lists multiple architectures of Godson-3A systems, and discusses the realization of software routing configuration mechanism by the crossbar switch in detail. Based on the above analysis, this paper analyzes the design and implementation of BIOS to realize the correct functions and improve the performance of various Godson-3A systems.