[U-Boot] U-boot SPL direct Linux boot

[Wolfgang Denk]

Dear Detlev,

In message <m21uyann8m.fsf at ohwell.denx.de> you wrote:
> 
> Just a probably dumb side question, but will ATAGS be deprecated once we
> have the flat device tree also on ARM?  As I understand, fdt is certainly

This is our understanding. For DT aware boards, no ATAGS are needed
/used any more.

> the way to go forward, so maybe we can already start with that?  In that
> case, the fdt blob will be another binary blob to be passed to the
> kernel and as such should be independant of U-Boot.  So ideally in
> U-Boot we have a pointer to the fdt but the fdt itself can be updated
> independantly.

Right.  That was the idea behind Heikos code: we don't actually care
what the kernel expects, we just pass it a binary blob and assume it
will understand it.  This may be a blob with ATAGs, or a blob with a
DT - only the kernel needs to know, the code in the SPL remains lean
and flexible.

Best regards,

Wolfgang Denk

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