[U-Boot-Users] A simple howto boot sequoia (ARCH=powerpc) using flattened device tree (FDT)

[Stefan Roese <sr@denx.de>]

On Friday 23 May 2008, Jerry Van Baren wrote:
> > I'm wondering who really wants to *not* override the chosen bootargs
> > property? I'm probably missing something here, but for me it just makes
> > no sense to not override the bootargs property with the U-Boot bootargs
> > env variable.
> >
> > Best regards,
> > Stefan
>
> Like most decisions, we kinda backed into it in an effort to mimic
> previous behavior at the start, and then tweaking our decision and code
> repeatedly over time.
>
> The original fdt support (CONFIG_OF_FLAT_TREE) did not touch the /chosen
> node *at all* if it existed.  I carried this behavior forward with the
> libfdt version under the banner of compatibility.  Subsequently, Scott
> Wood suggested and one of us implemented a fine-grained behavior where
> we would create /chosen properties if they didn't exist but not override
> existing /chosen properties.

Understood.

> It may be time to reevaluate our assumptions and decisions.

Yes, please :)

> Observations:
> * Removing the "force" option would simplify the code.
> * I've been threatening to remove the deprecated CONFIG_OF_FLAT_TREE
>      for a while now.  Maybe it is time, maybe I /make/ time, to do it
>      this window.

Would be very welcome. Thanks.

Best regards,
Stefan

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