Asymmetric Multiprocessing (AMP) - 2023.2 English

Zynq UltraScale+ MPSoC Software Developer Guide (UG1137)

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2023.2 English

AMP uses multiple processors with precise control over what runs on each processor. Unlike SMP, there are many different ways to use AMP. This section describes two ways of using AMP with varying levels of complexity.

In AMP, a software developer must decide what code has to run on each processor before compiling and creating a boot image that includes the software executable for each CPU. Using AMP with the Arm Cortex-R5F processors (SMP is not supported in Cortex-R5F) in the RPU enables developers to meet highly demanding, hard real-time requirements as opposed to soft real-time requirements.

You can develop the applications independently, and program those applications to communicate with each other using inter-processing communication (IPC) options. See the Interrupts chapter of the Zynq UltraScale+ Device Technical Reference Manual (UG1085) for further description of this feature.

You can also apply this AMP method to applications running on MicroBlazeā„¢ processors in the PL or even in the APU. The following diagram shows an AMP example with applications running on the RPU and the PL without any communication with each other.

Figure 1. AMP Example using Bare Metal Applications Running on RPU and PL