rpc_demo

This readme is about the OpenAMP rpc_demo demo. The rpc_demo is about one processor uses the UART on the other processor and create file on the other processor's filesystem with file operations.

For now, It implements the processor running generic(baremetal) applicaiton access the devices on the Linux.

Compilation

Baremetal Compilation

Option WITH_RPC_DEMO is to control if the application will be built. By default this option is ON when WITH_APPS is on.

Here is an example:

$ cmake ../open-amp -DCMAKE_TOOLCHAIN_FILE=zynq7_generic -DWITH_OBSOLETE=on -DWITH_APPS=ON

Linux Compilation

Linux Kernel Compilation

You will need to manually compile the following kernel modules with your Linux kernel (Please refer to Linux kernel documents for how to add kernel module):

Your machine's remoteproc kernel driver
obsolete/apps/rpc_demo/system/linux/kernelspace/rpmsg_proxy_dev_driver

Linux Userspace Compliation

Compile obsolete/apps/rpc_demo/system/linux/userspace/proxy_app into your Linux OS.
Add the built generic rpc_demo executable to the firmware of your Linux OS.

Run the Demo

After Linux boots, run proxy_app as follows:

# proxy_app [-m REMOTEPROC_MODULE] [-f PATH_OF_THE_RPC_DEMO_FIRMWARE]

The demo application will load the remoteproc module, then the proxy rpmsg module, will output message sent from the other processor, send the console input back to the other processor. When the demo application exits, it will unload the kernel modules.