[U-Boot] [PATCH v3] dfu: Introduction of the "dfu_hash_algo" env variable for checksum method setting

Marek Vasut
2014-05-08T13:07:16Z

On Thursday, May 08, 2014 at 02:27:47 PM, Lukasz Majewski wrote:
> Up till now the CRC32 of received data was calculated unconditionally.
> The standard crc32 implementation causes long delay when large images
> were uploaded.
>
> The "dfu_hash_algo" environment variable gives the opportunity to
> enable on demand (when e.g. debugging) the hash (crc32) calculation.
> It can be done without need to recompile the u-boot binary and reuses
> the generic hash framework.
>
> By default the crc32 is NOT calculated anymore.
>
> Tests results:
> 400 MiB ums.img file
> With crc32 calculation: 65 sec [avg 6.29 MB/s]
> Without crc32 calculation: 25 sec [avg 16.17 MB/s]
>
> Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
> Cc: Marek Vasut <marex@denx.de>

Reviewed-by: Marek Vasut <marex@denx.de>

Best regards,
Marek Vasut