4.5. Build the PetaLinux Image

4.5.1. Prerequisites

  • PetaLinux Tools 2021.2
  • Linux host machine

4.5.2. Build Flow Tutorial

Note

The below steps use platform vck190_mipiRxSingle_hdmiTx as an example. The same steps can be used for other platforms as well. The file/directory names will be replaced with the targeted platform name - vck190_<plarform_name>

  1. Clone the VCK190 Base TRD repository using the following command

    git clone --branch 2021.2 --recursive https://github.com/Xilinx/vck190-base-trd.git

The directory structure is described in the Introduction Section

Generate PetaLinux Image

Petalinux build flow has dependecy on artifacts from Vitis platform and overlay. Build steps shown below before generating a bootable petalinux image.

  • Section 4.2: Create the Vitis Platform

https://xilinx.github.io/vck190-base-trd/2021.2/html/build-pfm.html#create-the-vitis-platform

  • Section 4.3: Integrate Kernels in the Platform

https://xilinx.github.io/vck190-base-trd/2021.2/html/build-filter2d.html#integrate-2d-filter-kernels-in-the-platform

The xsa and xclbin binaries produced from the previous step are consumed by petalinux during the image creation step.

  1. Source the PetaLinux tool settings.sh script.

  2. Create a bootable SD card image:

    make sdcard PFM=vck190_mipiRxSingle_hdmiTx OVERLAY=filter2d

The resulting build artifacts will be available in the images/linux/ folder. The following is a list of important output files:

  • binary_container_1.xclbin: This is the kernel meta data file used by XRT
  • BOOT.BIN: This is the boot image which includes:
    • Platform Loader and Manager (PLM)
    • PS Management (PSM) firmware
    • Platform Device Image (PDI)
    • ARM trusted firmware
    • u-boot
    • Device tree blob
    • Merged AI Engine application and configuration data object (CDO) file
  • boot.scr: A u-boot boot script
  • Image: Linux kernel image
  • ramdisk.cpio.gz.u-boot: Initial filesystem in ramdisk
  • rootfs.tar.gz: Compressed root file system tar ball
  • petalinux-sdimage.wic.xz: Compressed SD card image file in wic format

The SD card image is now ready to be used to boot the device into Linux, see Section Run the Prebuilt Image for details.

4.5.2.1. Steps to Custom configure a PetaLinux project and build

User can configure BSP with custom XSA file, refer to the steps provided in

https://github.com/Xilinx/vck190-base-trd/blob/2021.2/petalinux/xilinx-vck190-base-trd/README.md

4.5.3. Reference

Petalinux Tools Documentation

https://www.xilinx.com/support/documentation/sw_manuals/xilinx2021_2/ug1144-petalinux-tools-reference-guide.pdf

Licensed under the Apache License, Version 2.0 (the “License”); you may not use this file except in compliance with the License.

You may obtain a copy of the License at [http://www.apache.org/licenses/LICENSE-2.0](http://www.apache.org/licenses/LICENSE-2.0)

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.