- 1. Overview
- 2. Remoteproc platform diver
- 3. Mailbox interrupt controller driver
- 4. Virtio platform driver 和 RPMsg user interface driver
- 5. Mailbox interface driver
1. Overview
项目需要实现 AMP 系统，在一个 4 核的 SoC(System on a Chip) 处理器上面运行 Linux 和 VxWorks 两个操作系统： core-0/2/3 运行 Linux OS， core-1 运行 VxWorks OS， 如下图所示：
采用 Open Asymmetric Multi-Processing (OpenAMP) framework 的 Linux kernel remoteproc driver 启动 core1 VxWorks 系统， 使用 Linux kernel RPMsg/Virtio driver 实现两个操作系统之间通讯。分 5 个 kernel module 实现，分别是 remoteproc platform diver，Mailbox interrupt controller driver， Virtio platform driver， RPMsg user interface driver 和 mailbox interface driver.
about OpenAMP OpenAMP (Open Asymmetric Multi-Processing) is a framework providing the software components needed to enable the development of software applications for AMP systems. It allows operating systems to interact within a broad range of complex homogeneous and heterogeneous architectures and allows asymmetric multiprocessing applications to leverage parallelism offered by the multicore configuration. OpenAMP (Open Asymmetric Multi-Processing) seeks to standardize the interactions between operating environments in a heterogeneous embedded system through open source solutions for Asymmetric MultiProcessing (AMP).
2. Remoteproc platform diver
3. Mailbox interrupt controller driver
4. Virtio platform driver 和 RPMsg user interface driver
4.1 RPMsg/Virtio probe
5. Mailbox interface driver
