Now that we have our customized PetaLinux image, the next step is to create a Versal custom platform with that Linux image. Packaging a platform requires the following software components for EXT4 rootfs:
build/vck190_linux/images/linux/linux.bif
: Boot image generation description filebuild/vck190_linux/images/linux/bl31.elf
: Component referred to by thelinux.bif
file in same folderbuild/vck190_linux/images/linux/u-boot.elf
: Component referred to by thelinux.bif
file in the same folderbuild/vck190_linux/images/linux/system.dtb
: Component referred to by thelinux.bif
file in the same folderbuild/image/boot.src
- U-Boot configuration file
First, add the BIF file (linux.bif
) to the build/vck190_linux/images/linux
directory. We have provided one for you to copy. When you open the linux.bif
file, the file names should match the contents of the boot directory. They are the source for creating the BOOT.BIN
.
cp linux.bif build/vck190_linux/images/linux/linux.bif
Next, prepare the image directory. The contents of this directory are packaged to FAT32 partition by the v++ --package
tool. Copy the boot.src
script for U-Boot initialization into the image directory.
mkdir build/image
cp build/vck190_linux/images/linux/boot.src build/image/.
Lastly, create the Versal custom PetaLinux platform (.xpfm
) using the xsct_create_pfm.tcl
script.
xsct xsct_create_pfm.tcl vck190_custom ../Module_04/build/rev1/hw/beamforming.rev1.hw.xsa
This script uses the XSA from Module 04 and the custom Petalinux image to generate a new Versal custom platform (.xpfm) in the build/vck190_custom/
directory. The new XPFM platform is used in the v++ --package
step in Module 09 to generate the SD card image.