[PATCH 1/2] common: oftree: Pass bootsource and bootsource instance to kernel

[Sascha Hauer]

Hi Andrey,

On Tue, May 08, 2018 at 02:21:24PM -0700, Andrey Smirnov wrote:
> Pass barebox-detected bootsource and bootsource instance to Linux to
> make it availible to Linux userspace. We use put the version under
> /chosen/bootsource and it can be read under Linux in
> 
> /sys/firmware/devicetree/base/chosen/bootsource

I like the idea of having the bootsource available in Linux and more
than once thought about implementing it. However, I don't think it's
good to put the rather adhoc strings from barebox into the devicetree.

I'd rather have a phandle pointing to the actual device providing the
bootsource. Something like converting bootsource/bootsource_instance
into an alias name, lookup that alias in the device tree and create a
phandle pointing to the node the alias points to aswell. This may be
more complicated, but this way we do not have to think up any mapping.

Sascha


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