DREAMS: Cross-Domain Mixed-Criticality Patterns

The transition from conventional federated archi-tectures to integrated architectures enables the integration of functionalities with different criticality (such as safety, security and real-time) on a single embedded computing platform. Many embedded mixed-criticality systems require distributed subsystems with networks to satisfy computational resource demands and installation requirements and ensure fault-tolerance. The broad trend of the integration of functionalities with different crit-icality on a multi-core embedded computing platform increases the complexity and challenges to certification, which is supported by the fact that today's safety-related standards are mostly focused on single-core devices and not on multi-core devices where resources are shared between more than one component. This paper analyses the commonly occurring problems in today's mixed-criticality systems and presents reusable generic solutions to tackle them, including solutions for hypervisors, commercial-off-the-self multi-core devices and mixed-criticality networks.