异构处理器多操作系统协同技术研究

Cooperative Technology of Multi-Operating System on Heterogeneous Multi-Core Processor

随着嵌入式设备应用场景日趋复杂的变化,异构多核架构逐渐成为嵌入式处理器的主流架构.目前,多核处理器主要采用的单操作系统模式在实际应用中存在诸多局限性.为了充分发挥异构处理器的多核特性,针对异构处理器不同核部署相应的操作系统并实现多操作系统协同处理技术至关重要.本文对异构多核处理器(ARM+DSP)操作系统进行了研究,在异构多核平台上成功移植了嵌入式Linux和国产DSP实时操作系统ReWorks;为实现ReWorks与Linux操作系统协同处理,本文对核间通信的关键技术进行分析研究,并以TI公司的AM5718为例,设计了一系列多核异构通信组件.经测试,本文设计的异构通信组件实现了在ARM上对DSP核进行ReWorks操作系统和应用程序的动态加载、Linux与ReWorks核间消息收发、以及Linux与ReWorks的协同计算等功能.

As application scenarios become more and more complex,heterogeneous multi-core architecture becomes the mainstream architecture of embedded processors.At present,there are many limitations in the application of the single operating system model mainly used in multi-core processors.In order to give full play to the heterogeneity of multi-core processor features,it is essential to deploy the corresponding operating system for different cores of heterogeneous processors and realize the collaborative processing technology of multiple operating systems.In this study,the operating system of heterogeneous multi-core processor (ARM+DSP)is investigated,and embedded Linux and ReWorks of domestic DSP real-time operating system are successfully transplanted on heterogeneous multi-core platform.In order to realize the collaborative processing between ReWorks and Linux operating system,this study analyzes the key technologies of inter-core communication,and takes AM5718of TI as an example,designs a series of multi-core heterogeneous communication components.It has been tested that the heterogeneous communication components can dynamically load the DSP kernel with the ReWorks operating system and applications,send and receive messages between Linux andReWorks cores,and perform collaborative computing between Linux and ReWorks.