Supported Configuration - 2023.2 English

Libmetal and OpenAMP User Guide (UG1186)

Document ID

UG1186

Release Date

2023-11-07

Version

2023.2 English

RPMsg kernel space refers to the kernel drivers implementing VirtIO, RPMsg, and Remoteproc and that RPMsg user space refers to the OpenAMP implementation of VirtIO, RPMsg, and Remoteproc.

Table 1. Features
	Linux kernel RPMsg/Remoteproc on APU + OpenAMP library used on RPU	OpenAMP library used on Linux userspace + OpenAMP library used on RPU	Libmetal library used on both APU and RPU
Linux boots RPU (RPU is a coprocessor to Linux APU host)	Yes See PetaLinux Images Quick Try	Yes See Building Linux Applications Using OpenAMP RPMsg in Linux Userspace	Yes See AMD Libmetal AMP Demo
Supports warm restart: Auto APU/RPU reconnect after APU restart	Yes See https://www.wiki.xilinx.com/OpenAMP	No	User defined
Supports pre-defined shared memory range	Yes See How to Write a Simple OpenAMP Application	Yes See Building Linux Applications Using OpenAMP RPMsg in Linux Userspace	Yes See Shared Memory and Enable Linux Demo Application Using Libmetal with PetaLinux Tools
Linux can dynamically allocate shared memory range	Yes See How to Write a Simple OpenAMP Application	No	No
Supports Multiple communication channels (For example: both RPUs)	Yes See OpenAMP Demos	Yes See OpenAMP Demos	Yes See OpenAMP Demos
Works with FSBL RPU boot	No	Yes	Yes See https://www.wiki.xilinx.com/OpenAMP
Data Transfer Overhead	Memory copy between user application and Linux kernel, and Linux kernel space to shared memory	Memory copy between user application and shared memory