Research on Dynamic Redundancy Reliability Mechanisms Based on Multi-core HeterogeneousOperating Systems

In response to the hybrid deployment requirements and functional safety needs of current embedded systems,this paper proposes a dynamic heterogeneous redundant operating system architecture,DHR-OS.Designed for hybrid deployment,the architecture features a mixed deployment model of heterogeneous operating systems,where Linux serves as the primary operating system on a multi-core CPU,while RTOS is dynamically deployed from the operating system image.To facilitate collaboration between operating systems,communication between the master and slave operating systems is implemented using OpenAMP.Furthermore,based on OpenAMP,mechanisms for time-division multiplexing of device drivers,remote RPC calls,and interrupt forwarding routing are established.To address functional safety requirements,the architecture includes a critical task safety execution mechanism that integrates scheduling,dispatching,and adjudication.Specifically,the Linux operating system pre-processes a pool of RTOS cores.When executing critical tasks,several RTOS cores are scheduled from this pool to serve as the task execution environment.The adjudicator on the Linux side processes the results returned by the RTOS core tasks using a distributed consensus algorithm based on weighted voting.This design enhances the system’s flexibility and resilience against attacks,providing a novel architectural solution to the hybrid deployment and functional safety needs of embedded systems,with significant innovation and practical value.