Towards hierarchical scheduling in AUTOSAR

Abstract

AUTOSAR is a partnership between automotive manufactures and suppliers. It aims at standardizing the automotive software architecture and separating software and hardware. This approach makes software more independent, maintainable, reuseable, etc. Still there is much work to do in order for this standard to be usable. This paper focus on automotive software integration in AUTOSAR, with the use of hierarchical scheduling as an enabling technology. At this point, AUTOSAR components do not have any timing relation with its tasks. This causes an unpredictive runtime behavior which can only be analyzed and verified after integration phase. We discuss how integration can be done in AUTOSAR, with runtime temporal isolation of components. This enable schedulability analysis at the level of components rather than at the level of tasks.