U-Boot在软件定义光收发机的双e500v2核上的移植研究

U-Boot Transplantation for Dual-e500v2 Core of Software Defined Optical Transceiver

软件定义光收发机(SDOT)的核心控制部分由Power PC P1020及外围功能器件构成。移植U-Boot是为了在SDOT完成上电之后,完成操作系统内核调用和启动。针对基于双e500v2核处理器P1020的智能光网络接入设备,给出了在Power PC平台系列设计中U-Boot移植的关键点。着重研究了结合目标板自身硬件的交叉编译环境和移植代码框架的搭建,以及拓展了DDR3的容量地址范围至1GB,并且介绍了DDR3时间参数和配置寄存器的移植设计和方法步骤。

Aiming at the intelligent optical network access equipment based on dual e500v2core processor P1020,the key point of U-Boot transplantation in the design of PowerPC platform is given.Focus on building with its own hardware target board cross compiler environment and transplant code framework,and expand the capacity of DDR3address range to1GB,and introduces the design method and steps of transplantation DDR3time parameters and configuration register.