[PATCH] crc32: Add crc32 implementation using __builtin_aarch64_crc32b

[Tom Rini]

On Mon, Aug 30, 2021 at 03:05:23PM +0200, Marek Vasut wrote:

> ARMv8.0 has optional crc32 instruction for crc32 calculation. The
> instruction is mandatory since ARMv8.1. The crc32 calculation is
> faster using the dedicated instruction, e.g. 1.4 GHz iMX8MN gives:
> 
>   => time crc32 0x50000000 0x2000000
>   time: 0.126 seconds # crc32 instruction
>   time: 0.213 seconds # software crc32
> 
> Add implementation using the compiler builtin wrapper for the crc32
> instruction and enable it by default, since we don't support any
> platforms which do not implement this instruction.
> 
> Signed-off-by: Marek Vasut <marex at denx.de>
> Cc: Simon Glass <sjg at chromium.org>
> Cc: Tom Rini <trini at konsulko.com>

Applied to u-boot/next, thanks!

-- 
Tom
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