The following steps describe how to
boot Linux on an AMD Zynq™
UltraScale+™ MPSoC board using U‑Boot from an SD card (or JTAG as an
alternative) and then run the OpenAMP echo‑test demo to verify communication between the
APU and RPU.
- Go to the U-Boot prompt and boot Linux from the SD
card:
ZynqMP> mmcinfo && fatload mmc 0 0x10000000 image.ub && fatload mmc 0 0x14000000 openamp.dtb Device: mmc@ff170000 Manufacturer ID: 3 OEM: 5344 Name: SL16G Bus Speed: 100000000 Mode: UHS SDR50 (100MHz) Rd Block Len: 512 SD version 3.0 High Capacity: Yes Capacity: 14.8 GiB Bus Width: 4-bit Erase Group Size: 512 Bytes 57212600 bytes read in 3718 ms (14.7 MiB/s) 40961 bytes read in 26 ms (1.5 MiB/s) ZynqMP> bootm 0x10000000 0x10000000 0x14000000Note: As an alternative to all steps above to SD boot, you can JTAG boot the board. For this you need to have connected a JTAG cable, installed JTAG drivers, and created a PetaLinux project using a provided BSP.To do this, you must go in the <your project>/pre-built/linux/images directory and replace the system.dtb file by openamp.dtb. Next, type
petalinux-boot --jtag --prebuilt 3. - Run the echo-test
demo.
root@plnx_aarch64:~# echo image_echo_test > /sys/class/remoteproc/remoteproc0/firmware root@plnx_aarch64:~# echo start > /sys/class/remoteproc/remoteproc0/state [ 265.772355] remoteproc remoteproc0: powering up ff9a0100.zynqmp_r5_rproc [ 265.779900] remoteproc remoteproc0: Booting fw image echotest_standalone_r5_0.elf, size 719860 [ 265.790005] zynqmp_r5_remoteproc ff9a0100.zynqmp_r5_rproc: RPU boot from TCM. Starting application... Initialize remoteproc successfully. creating remoteproc virtio initializing rpmsg shared buffer pool initializing rpmsg vdev initializing rpmsg vdev Try to create rpmsg endpoint. Successfully created rpmsg endpoint. [ 265.797738] remoteproc remoteproc0: registered virtio0 (type 7) [ 265.800388] virtio_rpmsg_bus virtio0: rpmsg host is online [ 265.830254] remoteproc remoteproc0: remote processor ff9a0100.zynqmp_r5_rproc is now up [ 265.838381] virtio_rpmsg_bus virtio0: creating channel rpmsg-openamp-demo-channel addr 0x0 root@xilinx-zcu102-2019_1:/lib/firmware# echo_test -d virtio0.rpmsg-openamp-demo-channel.-1.0 Echo test start Open rpmsg dev /dev/rpmsg0! ************************************** Echo Test Round 0 **************************************Note: This rpmsg device driver is an out-of-tree Linux kernel module. It can be loaded at boot time if you write a start-up init script.