Error during building PYNQv2.7 for ZedBoard

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1

20220111094615.log (303.9 KB)
Newbie here. Exploring the ZedBoard to be able to run PYNQ OS (v 2.7) on it.

Env:

  1. Ubuntu 18.06 VM using VagrantFile
  2. PetaLinux 2020.2
  3. Vitis Unified Software Platform 2020.2

I have followed the steps in the here and the little resources available on this topic on the internet.

However I am encountering the same error (Failed to build device-tree) multiple times and I am stuck at the same point. Could not find a similar thread in the forum.

Attached the output images of the terminal and the log file.

image
image1393×292 80.9 KB

After this, I get an error saying “Failed to build device-tree”

Please do help me resolve this.
If anyone has the prebuilt image for Zedboard, do share it with me.

2

Hi there,

What command are you using to build the image? Failed to fetch indicates that this might be some sort of connectivity problem - does your vm have internet access?

You can read up a bit more on PYNQ image building on the PYNQ github repository.

Thanks
Shawn

3

Greetings Shawn,

I have used 2 commands in particular:

  1. make boot_files BOARDS=zed (Ref : here)
  2. ./scripts/image_from_prebuilt.sh zed arm /boards/zed/base/base.bit (Ref : here)

Yes, my VM has internet access

dirStructure
dirStructure607×558 57.1 KB

This is the directory structure. I have used the PYNQ-Z2 board files as the base.

Some other references I found on this topic were this

Thank you for the reply
Do let me know if you need anything else
Regards,
Pratap

4

For 2. at least if you look at the image_from_prebuilt.sh script that you run from pynq/sdbuild (which I highly recommend reading through to familiarize yourself with the image build flow a bit more), it looks like you are missing the bsp and are passing a bitstream instead of a prebuilt image, the script it requires 4 inputs:

./scripts/image_from_prebuilt.sh board bsp_file arch prebuilt

you should add the bsp location and the prebuilt image can be downloaded from pynq.io, you’ll find a download link under “Build a PYNQ SD card image”.

In terms of your spec file… is that a pynq-z2 bitstream you included in base? If the bitstream wasn’t generated for your board I would leave that field blank.

Also, before your run a make command again I recommend doing a make clean.

5

Greetings Shawn,

Apologies for the delay in response.
Thank you for your input.
I took some time to go through the resources you mentioned and followed the steps as you suggested.

I was able to successfully build the PYNQ Image for the ZedBoard.
Haven’t been able to test it on the board yet.

Regards,
Pratap