Build instructions

Source code

The source code for the reference designs is managed on this Github repository:

• https://github.com/fpgadeveloper/rpi-camera-fmc

As this repository has submodules, you must clone the repository with the --recursive option as below:

git clone --recursive https://github.com/fpgadeveloper/rpi-camera-fmc.git

License requirements

The designs for all of the target boards except the ZCU102 can be built with the Vivado ML Standard Edition without a license.

The ZCU102 board is not supported by the Vivado ML Standard Edition (aka. the Webpack or free version) so to build the designs for the ZCU102 board, you will need to either buy a license or download a 30-day evaluation license for Vivado ML Enterprise Edition.

Target designs

This repo contains several designs that target the various supported development boards and their FMC connectors. The table below lists the target design name, the camera ports supported by the design and the FMC connector on which to connect the RPi Camera FMC. The VCU column indicates which designs contain the Video Codec Unit and which do not.

Target board	Target design	FMC slot	Cameras	VCU
ZCU104	zcu104	LPC	4	YES
ZCU102	zcu102_hpc0	HPC0	4	NO
ZCU102	zcu102_hpc1	HPC1	2 (note 1)	NO
ZCU106	zcu106_hpc0	HPC0	4	YES
PYNQ-ZU	pynqzu	LPC	2 (note 2)	NO
Genesys-ZU	genesyszu	LPC	2 (note 2)	YES
UltraZed EV carrier	uzev	HPC	4	YES

Notes:

1. The HPC1 connector of the ZCU102 board can only support 2 cameras due to it’s pin assignment. This design uses CAM0 and CAM1 as labelled on the RPi Camera FMC.

2. The pynqzu and genesyszu target designs have video pipelines for only 2 cameras: CAM1 and CAM2 as labelled on the RPi Camera FMC. This is due to the resource limitations of the devices on these boards.

Linux only

These projects can be built using a machine (either physical or virtual) with one of the supported Linux distributions.

Tip

The build steps can be completed in the order shown below, or you can go directly to the build PetaLinux instructions below to build the Vivado and PetaLinux projects with a single command.

Build Vivado project

1. Open a command terminal and launch the setup script for Vivado:

   source <path-to-vivado-install>/2022.1/settings64.sh
   

2. Clone the Git repository and cd into the Vivado folder of the repo:

   git clone --recursive https://github.com/fpgadeveloper/rpi-camera-fmc.git
   cd rpi-camera-fmc/Vivado
   

3. Run make to create the Vivado project for the target board. You must replace <target> with a valid target (alternatively, skip to step 5):

   make project TARGET=<target>
   

   Valid targets are: zcu104, zcu102_hpc0, zcu102_hpc1, zcu106_hpc0, pynqzu, genesyszu and uzev. That will create the Vivado project and block design without generating a bitstream or exporting to XSA.

4. Open the generated project in the Vivado GUI and click Generate Bitstream. Once the build is complete, select File->Export->Export Hardware and be sure to tick Include bitstream and use the default name and location for the XSA file.

5. Alternatively, you can create the Vivado project, generate the bitstream and export to XSA (steps 3 and 4), all from a single command:

   make xsa TARGET=<target>
   

Build PetaLinux project

These steps will build the PetaLinux project for the target design. You are not required to have built the Vivado design before following these steps, as the Makefile triggers the Vivado build for the corresponding design if it has not already been done.

1. Launch the setup script for Vivado (only if you skipped the Vivado build steps above):

   source <path-to-vivado-install>/2022.1/settings64.sh
   

2. Launch PetaLinux by sourcing the settings.sh bash script, eg:

   source <path-to-petalinux-install>/2022.1/settings.sh
   

3. Build the PetaLinux project for your specific target platform by running the following command, replacing <target> with a valid value from below:

   cd PetaLinux
   make petalinux TARGET=<target>
   

   Valid targets are: zcu104, zcu102_hpc0, zcu102_hpc1, zcu106_hpc0, pynqzu, uzev. Note that if you skipped the Vivado build steps above, the Makefile will first generate and build the Vivado project, and then build the PetaLinux project.

PetaLinux offline build

If you need to build the PetaLinux projects offline (without an internet connection), you can follow these instructions.

1. Download the sstate-cache artefacts from the Xilinx downloads site (the same page where you downloaded PetaLinux tools). There are four of them:

   • aarch64 sstate-cache (for ZynqMP designs)

   • arm sstate-cache (for Zynq designs)

   • microblaze sstate-cache (for Microblaze designs)

   • Downloads (for all designs)

2. Extract the contents of those files to a single location on your hard drive, for this example we’ll say /home/user/petalinux-sstate. That should leave you with the following directory structure:

   /home/user/petalinux-sstate
                             +---  aarch64
                             +---  arm
                             +---  downloads
                             +---  microblaze
   

3. Create a text file called offline.txt that contains a single line of text. The single line of text should be the path where you extracted the sstate-cache files. In this example, the contents of the file would be:

   /home/user/petalinux-sstate
   

   It is important that the file contain only one line and that the path is written with NO TRAILING FORWARD SLASH.

Now when you use make to build the PetaLinux projects, they will be configured for offline build.