[yocto] Yocto - Rpi: u-boot --- hangs on boot?

[Kman Devnull]

Hi,
How do you get the u-boot built with yocto for Raspberry Pi 3?

- I used this link
<https://jumpnowtek.com/rpi/Raspberry-Pi-Systems-with-Yocto.html> to get
the base build working for q5-image on Raspberry Pi 3.
- I have used the yocto 'thud' release.
- Now in order to get u-boot build I added the below line for local.conf
file.
  RPI_USE_U_BOOT = "1"
- When I boot it just hangs on a rainbow colour screen.

Please find bblayers.conf and local.conf attached.

Kindly advice.
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