Where to get uboot for rock5b with th support ?

[BlackS52]

Hi all,

I'm trying to boot the board exactly by uboot+network and i've faced with an issue that default u-boot doesn't support eth device.
How to resolve this?
Why radxa doesn't add this support to default u-boot with rock5b package?
Where I can get a prebuilt u-boot with such support?

[darallium]

same

[sergeyblackwrk-max]

I've found a solution. I'm not sure that exactly help but after both of it it works.
So, the first I've just installed uboot from armbian.

The second and maybe the powerfull solution is to check PCI Dev before ask network devices

'''
pci enum
net list
'''
And after that I can see net devices.
As understood it deals with some problem with net dev connected by internal PCI-e switch.