From mboxrd@z Thu Jan  1 00:00:00 1970
From: Marek Vasut <marex@denx.de>
Date: Mon, 31 Mar 2014 11:04:13 +0200
Subject: [U-Boot] [PATCH 3/3] dfu: Introduction of the
	"dfu_checksum_method" env variable for checksum method setting
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	<1396255729-6573-4-git-send-email-l.majewski@samsung.com>
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On Monday, March 31, 2014 at 10:48:49 AM, Lukasz Majewski wrote:
> Up till now the CRC32 of received data was calculated unconditionally.
> The standard crc32 implementation causes long delays when large images
> were uploaded.

You might want to check common/cmd_hash.c and include/hash.h for the 
hash_command() call. It does the resolution of the hash algorithm from it's name 
and you can operate also SHA1 and SHA256 with it. It would be nice if you could 
just extend it a bit and use that instead of adding another ad-hoc mechanism.

Do you think it'd be possible to reuse it please ?

Best regards,
Marek Vasut