AUTOBEST: a united AUTOSAR-OS and ARINC 653 kernel

This paper presents AUTOBEST, a united AUTOSAR-OS and ARINC 653 RTOS kernel that addresses the requirements of both automotive and avionics domains. We show that their domain-specific requirements have a common basis and can be implemented with a small partitioning microkernel-based design on embedded microcontrollers with memory protection (MPU) support. While both, AUTOSAR and ARINC 653, use a unified task model in the kernel, we address their differences in dedicated user space libraries. Based on the kernel abstractions of futexes and lazy priority switching, these libraries provide domain specific synchronization mechanisms. Our results show that thereby it is possible to get the best of both worlds: AUTOBEST combines avionics safety with the resource-efficiency known from automotive systems.