[U-Boot] passing info from SPL to U-Boot

[Philipp Tomsich]

> On 17.03.2019, at 15:12, Simon Glass <sjg at chromium.org> wrote:
> 
> Well, my thinking is that GD is actually a set of pointers, with the
> actual data stored elsewhere. The nice thing about bloblist is that it
> is a contiguous block of a set size, which holds data used by
> different parts of U-Boot (e.g. could be drivers, arch-specific code,
> vboot, features like android boot, EFI, etc.). Some of the pointers in
> GD could move to bloblist, like bootstage as already discussed.
> 
> But if you want one solution, then it has to be GD I think. Perhaps we
> can defer this until the GD work is done and we have a few more users?

For some RK33xx devices, we inject the original boot-location into
the FDT passed to the full U-Boot stage.  While this requires FIT in
SPL (and may thus not be generally applicable), it is one convenient
way for such use-cases today.

Thanks,
Philipp.