[U-Boot] [PATCH 1/3] ARM: revive CONFIG_USE_ARCH_MEMCPY/MEMSET for UniPhier and Tegra

[Tom Rini]

On Mon, Dec 19, 2016 at 07:31:02PM +0900, Masahiro Yamada wrote:
> Commit be72591bcd64 ("Kconfig: Move USE_ARCH_MEMCPY/MEMSET to
> Kconfig") is misconversion.
> 
> The original logic in include/configs/uniphier.h was as follows:
> 
>   #if !defined(CONFIG_SPL_BUILD) && !defined(CONFIG_ARM64)
>   #define CONFIG_USE_ARCH_MEMSET
>   #define CONFIG_USE_ARCH_MEMCPY
>   #endif
> 
> This means those configs were enabled when building U-Boot proper,
> but disabled when building SPL.  Likewise for Tegra.
> 
> Now "depends on !SPL" prevents any boards with SPL support
> from reaching these options.  This changed the behavior for
> UniPhier and Tegra SoC family.
> 
> Please notice these two options only control the U-Boot proper
> build.  As you see arch/arm/Makefile, ARM-specific memset/memcpy
> are never compiled for SPL.  So, __HAVE_ARCH_MEMCPY/MEMSET should
> not set for SPL.
> 
> Fixes: be72591bcd64 ("Kconfig: Move USE_ARCH_MEMCPY/MEMSET to Kconfig")
> Signed-off-by: Masahiro Yamada <yamada.masahiro at socionext.com>

Ah, oops, thanks for spotting that one.

> ---
> 
> I am restoring the original behavior for now.
> But, I have been wondering if we could remove these options entirely.

We cannot.  That was my first attempt and we have a handful of active (I
checked) boards with tiny enough SPL constraints that switching to the
optimized memcpy/memset push them over size limit and they do not have a
"something" to disable to gain the space back.  So I went with asking
for asking for a conversion to enable by default these options as widely
as possible as it's a good thing by and (no pun intended) large.

-- 
Tom
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