Fast FPGA-based fault injection tool for embedded processors

Mohammad Shokrolah Shirazi, B. Morris, H. Selvaraj
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引用次数: 15

Abstract

FPGA-based fault injection methods have recently become more popular since they provide high speed in fault injection experiments. During each fault injection experiment, FPGA should send data related with observation points back to host computer for fault tolerant analysis. Since there is high data volume, FPGA should spend most of its time in communication. In this paper, we solve this problem by bringing all parts of fault injection tool inside FPGA. The area overhead problem related with observation data is obviated by using simple observation circuit. As case study, we injected 6400 SEU faults into OpensRISC 1200 processor over the Cyclone II FPGA. Results show that our fault injection experiments are done more than 400 times faster than one of the traditional FPGA based fault injection methods with only 5% area overhead.
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基于fpga的嵌入式处理器快速故障注入工具
基于fpga的故障注入方法由于提供了高速的故障注入实验,近年来越来越受欢迎。在每次故障注入实验中,FPGA将与观测点相关的数据发回上位机进行容错分析。由于数据量大,FPGA应该把大部分时间花在通信上。本文通过将故障注入工具的各个部分集成到FPGA中来解决这一问题。利用简单的观测电路,解决了观测数据的面积开销问题。作为案例研究,我们通过Cyclone II FPGA将6400个SEU故障注入到OpensRISC 1200处理器中。结果表明,我们的故障注入实验比传统的基于FPGA的故障注入方法快400倍以上,而面积开销仅为5%。
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