[U-Boot] [PATCH] ARM: uniphier: drop UniPhier specific SMP code

[Masahiro Yamada]

2015-11-08 21:43 GMT+09:00 Tom Rini <trini at konsulko.com>:
> On Sat, Nov 07, 2015 at 01:12:14AM +0900, Masahiro Yamada wrote:
>> 2015-11-06 22:46 GMT+09:00 Tom Rini <trini at konsulko.com>:
>> > On Fri, Nov 06, 2015 at 10:16:30PM +0900, Masahiro Yamada wrote:
>> >
>> >> The latest Linux can directly handle SMP operations for UniPhier SoCs
>> >> without any help of U-boot.  Drop the relevant code from U-boot.
>> >>
>> >> See commit b1e4006aeda8c8784029de17d47987c21ea75f6d ("ARM: uniphier:
>> >> rework SMP operations to use trampoline code") in Linux Kernel.
>> >>
>> >> Signed-off-by: Masahiro Yamada <yamada.masahiro at socionext.com>
>> >
>> > So my question for you is how much of a concern is running older kernels
>> > and newer U-Boots on these platforms?  I know that for example we
>> > couldn't do something like that in "beagle" land, and for Allwinner
>> > platforms we still have ways of making the older but most featureful
>> > kernels work.
>>
>>
>> Good question.
>>
>> Socionext (and my former company, Panasonic) tended to
>> modify source code locally (ugly hacks here and there) and never tried
>> to push patches to the upstream.
>>
>> I started the kernel upstreaming this year,
>> and the company changed the mind and stared to realize its importance,
>> but it is under way.
>>
>> The mainline kernel requires some more extra patches that have not
>> been upstreamed yet.
>>
>> So, our customers cannot do anything with the mainline kernel alone.
>> They are supposed to use software stacks released from us.
>>
>> So, the combination of the older kernels + newer U-boot does not matter.
>> The older kernels were not working in the first place.
>
> Thanks!
>
> Reviewed-by: Tom Rini <trini at konsulko.com>
>


Applied to u-boot-uniphier.


-- 
Best Regards
Masahiro Yamada