.. _Integrate XVDPU overlay:

Integrate XVDPU and Multiscaler Kernels in the Platform
=======================================================

Prerequisites
-------------

* Reference Design source files

* Vitis Unified Software Platform 2022.2 (include AIE tool chain)

Build Flow Tutorial
-------------------

**Clone the Reference Design Files:**

Skip this  step if the design has already been cloned and
extracted to a working directory

#. Clone the VCK190 PCIe TRD repository using the following command

   .. code-block:: bash

      git clone --branch 2022.2 --recursive https://github.com/Xilinx/vck190-pcie-trd.git

The directory structure is described in the Introduction Section

**Set up the Vitis toolchain:**

#. To set up the Vitis toolchain, run the following commands:

   .. code-block:: bash

      source $XILINX_VITIS/settings.sh
      export XILINXD_LICENSE_FILE=<path to where the aiecompiler license file is installed>

**Implement platform design with xvdpu and multiscaler accelerators:**

#. To create the platform design with accelerators integrated, run the following
   Makefile:

   .. code-block:: bash

      cd $working_dir
      make overlay PFM=vck190_mipiRxSingle_hdmiTx OVERLAY=xvdpu

   The Makefile implements the following:

   * Builds the xvdpu kernel which has a PL and AIE portion. The RTL HDL files
     are converted to *xvdpu.xo* kernel format and the file *libadf.a* is
     provided as an input describing the AIE elf, cdo, and graph.
   * Builds the multiscaler kernel by synthesizing the HLS IP and converting it
     to *.xo* kernel format.
   * Integrates the above kernels into the *vck190_mipiRxSingle_hdmiTx* design
     using the Vitis linker. Generates *binary_container_1.xclbin* which
     contains meta data describing the kernels and platform. Generates a new
     XSA that includes the updated PDI.

   Note: If :ref:`Create a Vitis Extensible Platform` tutorial is not run before this,
   then this Makefile also generates the Vitis platform.


#. The following is a list of important output products:

   * Vivado project with integrated kernels:
     *$working_dir/overlays/xvdpu/kernels/_x/link/vivado/vpl/prj/prj.xpr*

   * XSA required for building the Petalinux BSP:
     *$working_dir/overlays/xvdpu/kernels/binary_container_1.xsa*
     The XSA contains the updated PDI with the accelerators added into the
     platform design and the merged AIE binary.The XSA is required to build the
     final boot image *BOOT.BIN* in PetaLinux.

   * The xclbin that contains the platform and kernel meta data needed by XRT:
     *$working_dir/overlays/xvdpu/kernels/binary_container_1.xclbin*

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