Dependability driven integration of mixed criticality SW components

Shariful Islam, Robert Lindstrom, N. Suri
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引用次数: 40

Abstract

Mapping of software onto hardware elements under platform resource constraints is a crucial step in the design of embedded systems. As embedded systems are increasingly integrating both safety-critical and non-safety critical software functionalities onto a shared hardware platform, a dependability driven integration is desirable. Such an integration approach faces new challenges of mapping software components onto shared hardware resources while considering extra-functional (dependability, timing, power consumption, etc.) requirements of the system. Considering dependability and real-time as primary drivers, we present a systematic resource allocation approach for the consolidated mapping of safety critical and non-safety critical applications onto a distributed platform such that their operational delineation is maintained over integration. The objective of our allocation technique is to come up with a feasible solution satisfying multiple concurrent constraints. Ensuring criticality partitioning, avoiding error propagation and reducing interactions across components are addressed in our approach. In order to demonstrate the usefulness and effectiveness of the mapping, the developed approach is applied to an actual automotive system
可靠性驱动的混合临界软件组件集成
在平台资源约束下将软件映射到硬件元素是嵌入式系统设计的关键步骤。随着嵌入式系统越来越多地将安全关键和非安全关键软件功能集成到共享硬件平台上,可靠性驱动的集成是可取的。这种集成方法面临着将软件组件映射到共享硬件资源的新挑战,同时考虑系统的额外功能(可靠性、时序、功耗等)需求。考虑到可靠性和实时性是主要驱动因素,我们提出了一种系统的资源分配方法,用于将安全关键型和非安全关键型应用程序整合到分布式平台上,以便通过集成维护其操作描述。我们的分配技术的目标是提出一个可行的解决方案,满足多个并发约束。我们的方法解决了确保临界分区、避免错误传播和减少组件之间的交互的问题。为了证明该方法的实用性和有效性,将该方法应用于实际的汽车系统
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