OpenAMP uses Libmetal as an abstraction layer to access devices, handle interrupts and shared memory. Libmetal is used because it provides a uniform interface for accessing devices and memory. OpenAMP uses libmetal to access Inter-Processor Interrupt (IPI) and shared memory. OpenAMP leverages standards for shared memory management, lifecycle management and communication. A diagram to show the connection between libmetal and OpenAMP is as follows:
Figure 1. Libmetal and OpenAMP Connection
