[PATCH v6 1/3] arm64: arch/arm/lib: Add optimized memset/memcpy/memmove functions

[Tom Rini]

On Thu, Sep 02, 2021 at 05:00:17PM +0200, Stefan Roese wrote:

> Ported from https://github.com/ARM-software/optimized-routines
> 
> These files are included from this repository, including the latest
> git commit ID:
> string/aarch64/memcpy.S: afd6244a1f8d
> string/aarch64/memset.S: e823e3abf5f8
> string/asmdefs.h: e823e3abf5f8
> 
> Note that memmove is also handled by the memcpy function.
> 
> Please note that when adding these optimized functions as default memset
> memcpy functions in U-Boot, U-Boot fails to boot on the LX2160ARDB.
> After the initial ATF output, no U-Boot output is shown on the serial
> console. Some exception is triggered here in the very early boot process
> as some of the assembler opcodes need the caches to be enabled.
> 
> Because of this, a follow-up patch will add a check to use a simple
> non-optimized memset for the "cache disabled" case.
> 
> Note:
> I also integrated and tested with the Linux versions of these optimized
> functions. They are similar to the ones now integrated but these ARM
> versions are still a small bit faster.
> 
> Signed-off-by: Stefan Roese <sr at denx.de>

Applied to u-boot/next, thanks!

-- 
Tom
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