Re: [U-Boot] [PATCH v2] dfu: Introduction of the "dfu_checksum_method" env variable for checksum method setting

5 May 2014


      On Monday, May 05, 2014 at 03:16:26 PM, 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.
The "dfu_checksum_method" environment variable gives the opportunity to
enable on demand (when e.g. debugging) the crc32 calculation.
It can be done without need to recompile the u-boot binary.
By default the crc32 is not calculated.
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
Acked-by: Marek Vasut marex@denx.de
Best regards,
Marek Vasut