RZG2L and DTB blob from TF-A

[Marek Vasut]

On 9/18/25 2:54 PM, Mathieu Othacehe wrote:

Hello everyone,

>> Also, you need a patch to identify the device and pass it as blob
>> to the mainline u-boot
>>
>> On TF-A:
>> .ep_info.args.arg1 = (uintptr_t)fdt_blob,
>>
>> Also you should fill the memory blob(fdt_blob).
>>
>> Hope you can take over from here.
> 
> Thanks Marek and Biju. The current state is still that people will take
> the forked Renesas TF-A

Why not take mainline TFA ? Maybe there is no TFA for G2L upstream (yet) ?

> , the mainline U-Boot with the
> renesas_rzg2l_smarc_defconfig configuration and expect things to work
> out of the box.
> 
> Currently, before figuring out that the TF-A needs to be patched
> manually, U-Boot is just crashing without outputing anything, which is
> painful to debug.
> 
> As the only RZG2L supported by U-Boot is the r9a07g044l2-smarc, and we
> are not receiving any blob from the TF-A, I think it is fair to assume
> that we are booting from the platform we are compiling U-Boot for.
> 
> I have proposed a patch here:
> https://lists.denx.de/pipermail/u-boot/2025-September/598712.html
I'll reply to the patch.