在P2020平台下使用串口更新Bootrom

Update Bootrom with Serial Port under P2020 Platform

针对传统情况下更新bootrom需要取下存储芯片编程,频繁操作会对主板底座造成伤害问题,论文提出了一种在P2020平台下启动vx Works系统后使用串口在线更新bootrom的方法。定义了一套基于串口的通信传输协议,为保障数据在传输过程中完整性和正确性,在传输过程中采取了校验和重传机制。最后文章介绍了flash烧写的具体实现过程。测试结果显示,该方法具有可靠性高和成功率高的特性。

According to the traditional case update bootrom from memory chip programming,frequent operation will cause harm to the motherboard base,this paper proposes a method for updating bootrom online after vx Works system booting in the P2020 platform. A communication protocol based on serial port is defined. In order to ensure the integrity and correctness of data during transmission,a calibration and retransmission mechanism is adopted in the transmission process. Finally,the specific implementation process of flash burning is introduced. The test results show that this method has the characteristics of high reliability and high success rate.