[U-Boot] Please pull ARC changes

[Tom Rini]

On Fri, Mar 23, 2018 at 01:23:53PM +0000, Alexey Brodkin wrote:

> Hi Tom,
> 
> This is the first batch of ARC changes for the next release.
> 
> Here we:
>  1. Significantly rework cache-related functionality.
>     In particular that fixes coherency problems in some corner-cases,
>     allows us to enable and disable caches in run-time and still
>     have properly running system, finally support execution from
>     real flash (before we used to run from DDR from the very beginning).
> 
>  2. Remove string routines implemented in assembly.
>     That allows us to build and run U-Boot on wide range og ARC cores
>     with different configurations. I.e. whatever tuning is used on GCC's
>     command-line we'll get code for desired flavor of ARC.
>     Otherwise for each and every corner-case we would need to add ifdefs
>     in assembly code to accommodate missing instructions etc.
> 
>  3. Get use of GCC's garbage collector which helps to slim-down resulting image
>     quite a bit.
> 
>  4. Also now we may disable U-Boot self-relocation for ARC if needed either
>     by platform or for debugging purposes.

FYI, all of the above would be really good to put into a signed tag,
next time :)

> P.S. Do you have an idea when RC1 is going to be cut?
>      We have some other pending changes and it's good to understand how much time
>      we have for finalization if we want [and we do want] to still squeeze it all
>      in the next release.

Should be April 2nd, per the ReleaseCycle wiki page.

-- 
Tom
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