Demo to Run Zephyr on R52-0 for Versal-2ve-2vm - Demo to Run Zephyr on R52-0 for Versal-2ve-2vm - 2026.1 English - UG1186

The following steps enable you to run the OpenAMP demo on Versal 2VE/2VM:

1. Identify the correct remoteproc node. After booting, run the following:

   dmesg | grep remoteproc

   Example output:

   [    2.794038] remoteproc remoteproc0: ebb80000.r52f is available
   [    2.800037] remoteproc remoteproc1: ebbc0000.r52f is available
   [    2.806278] remoteproc remoteproc2: ebc00000.r52f is available
   [    2.812242] remoteproc remoteproc3: ebc40000.r52f is available
   [    2.818393] remoteproc remoteproc4: eba00000.r52f is available  # correct node
   

   In this example, remoteproc corresponds to remoteproc4 in /sys/class/remoteproc/remoteproc4, but depending on the kernel probe, this can change. Notice the ending EBA00000.
2. Set the firmware path to the location of the firmware ELF file:

   /lib/firmware/xilinx/vek385/rpu/vek385-r5-0-zephyr-openamp-rpmsg-multi-srv/
       vek385-r5-0-zephyr-openamp-rpmsg-multi-srv_slot0/
       vek385-r5-0-zephyr-openamp-rpmsg-multi-srv.elf
   

   Save the path without /lib/firmware/:

   export FW=xilinx/vek385/rpu/vek385-r5-0-zephyr-openamp-rpmsg-multi-srv/vek385-r5-0-zephyr-openamp-rpmsg-multi-srv_slot0/vek385-r5-0-zephyr-openamp-rpmsg-multi-srv.elf
   

3. Start the remote processor by running the following as root:

   sudo -s
   echo $FW > /sys/class/remoteproc/remoteproc4/firmware
   echo start > /sys/class/remoteproc/remoteproc4/state
   

cat /dev/ttyRPMSG0 &
echo "Hello Zephyr" > /dev/ttyRPMSG0
# Output: TTY 0: Hello Zephyr
echo "Goodbye Zephyr" > /dev/ttyRPMSG0
# Output: TTY 0: Goodbye Zephyr