龙芯3号板卡HT互联及内存故障诊断方法的设计与实现  

Design and Realization of HT Interconnection and Memory Fault Diagnosis Method for Loongson-3 Mainboard

作　　者：冯珂珂 贾凡[2] 杜晓杰 王玉钱 Feng Keke;Jia Fan;Du Xiaojie;Wang Yuqian(Nanjing University of Science and Technology Computer Science and Engineering,Nanjing 210094,China;Beijing Aerospace Measurement&Control Technology Co.,Ltd.,Beijing 100041,China;Loongson Technology Corporation Limited,Beijing 100095,China)

机构地区：[1]南京理工大学计算机科学与工程学院,南京210094 [2]北京航天测控技术有限公司,北京100041 [3]龙芯中科技术有限公司,北京100095

出　　处：《计算机测量与控制》2020年第6期1-6,11,共7页Computer Measurement &Control

摘　　要：龙芯3号处理器广泛应用于安全可靠领域,这类主板器件密度大,板贴程度高,板级故障检测和诊断难度大;需要在确保硬件高可靠的同时加强设备自检测和故障自诊断设计;基于龙芯3号计算机主板端到端总线技术(Hyper Transport,HT)互联和内存出错两类常见的故障,提出了软件辅助故障诊断和可靠性增强的方法,其中针对HT互联故障采用从核监控自动探测法,内存故障基于写-读-比较的方法,对内存遍历模式进行筛选,提高故障诊断效率,为工厂的维修保障工作提供了有效的软件辅助定位故障的方法;经实验测试,该方法可以快速高效地定位龙芯3号主板故障,提高了维修保障效率。The loongson-3 processor is widely used in the field of safety and reliability.This type of motherboard has a high density of devices,a high degree of board mounting,and a difficulty in fault detection;it is necessary to strengthen the device self-detection and fault self-diagnosis design while ensuring high hardware reliability;based on loongson 3 mainboard,there are two common types of faults,computer motherboard HyperTransport(HT)interconnection and memory errors,Among them,the automatic detection method of secondary processor monitoring is adopted for HT interconnection faults,and the memory faults are based on the write-read-comparison method to filter the memory traversal mode to improve the efficiency of fault diagnosis,which provide a software-assisted fault diagnosis and reliability enhancement method,which provides an effective software-assisted method for locating faults for factory maintenance support;Experiments show this method can quickly and efficiently locate the failure of the loongson-3 motherboard,which improves the efficiency of maintenance support.

关 键 词：龙芯 HT总线 板级故障诊断 上电自检程序 

分 类 号：TP307[自动化与计算机技术—计算机系统结构]