rpmsg在Linux和Zephyr中的实现

Linux and Zephyr “talking” to

each other in the same SoC

Diego Sueiro, Sepura / Embarcados

www.embarcados.com.br

Embedded Linux Conference Europe 2018

Agenda

Real-Time applications with HMP (Heterogeneous Multiprocessing)

OpenAMP Introduction

RPMsg Introduction

Preamble

● NXP i.MX7 processor is hardware reference platform;

● The “full” OpenAMP will not be used in this presentation;

● Up to now on Zephyr, only one SoC family (LPC54114) is using the “full” OpenAMP to

communicate between Cortex M0 and M4 cores;

● This work is not in the mainline (kernel and zephyr) yet, but is open source ;-)

Agenda

Real-Time applications with HMP (Heterogeneous Multiprocessing)

OpenAMP Introduction

RPMsg Introduction

Real-Time applications with HMP

● a.k.a: AMP (Asymmetric Multiprocessing);

● In the same SoC we have different CPU architectures and combinations:

○ Application Core, e.g.: ARM Cortex A9;

○ Digital Signal Processing, e.g.: Texas Instruments DSP C6000;

○ Computing Power, e.g.: Xilinx FPGA Artix-7;

○ Low Power and Real-time performance: ARM Cortex M4;

○ System integrity;

○ System security;

○ Leverage hardened or certified software solutions;

○ Reuse of legacy software.