基于SPARC V8的星载嵌入式软件全数字仿真平台设计与实现

Design and Implementation of a full-digital simulation platform foron-board embedded software based on SPARC V8 architecture

摘要:

为了提高星载嵌入式软件的可靠性和安全性,解决硬件测试环境构建困难、成本昂贵以及运行状态难以监控的局限性,提出了一种基于SPARC V8的星载嵌入式软件全数字仿真平台设计和实现方法。介绍了全数字仿真平台实现的关键技术,包括CPU指令集仿真、寄存器仿真、存储器仿真、中断控制器仿真、串口仿真、定时器仿真、虚拟外设模型仿真以及设备管理器和平台时序设计。全数字仿真平台与基于硬件的测试平台相比具有可重用性强、可快速搭建、成本低廉、高可控性、调试和测试手段丰富、支持故障注入等优点。该全数字仿真平台已在星载嵌入式软件型号研制中得到了应用,基于此平台可快速搭建虚拟目标机和虚拟外设环境,进行星载嵌入式软件运行仿真、调试验证等工作。

Abstract:

In order to improve the reliability and security of on-board embedded software, and to solve the limitations of hard to build, expensive and difficult to monitor the running state of the hardware test environment, this paper presents the design and implementation of a full-digital simulation platform for on-board embedded software based on SPARC V8 architecture. The key technologies of the digital simulation platform are introduced, including CPU instruction simulation, register simulation, interrupt controller simulation, serial port simulation, timer simulation, virtual peripheral model simulation and design of device manage and platform timing. Compared with the hardware-based test platform, the full-digital simulation platform has the advantages of strong reusability, fast construction, low cast, high controllability, abundant debugging and testing means, support fault injection, etc. It has been used in the development of embedded software on satellite. Based on this platform, the virtual environment can be built quickly, and the embedded software can be simulated and tested.