Create the hardware platform using the Tcl flow. The Tcl files are shared in the vivado_impl folder.
Use the following command to generate the Vivado project through Tcl and Export XSA.
vivado -mode batch -source ./vivado_impl/flat.tcl
OR use the make command to generate the XSA.
make xsa
Output: The generated extensible XSA is located in the director vivado_impl/flat_wa.xsa and flat folder contains the Vivado project flat.