[U-Boot] [PATCH v3] Add 'sf update' command to do smart SPI flash update

[Mike Frysinger]

On Friday, August 19, 2011 15:28:48 Simon Glass wrote:
> This adds a new SPI flash command which only rewrites blocks if the
> contents need to change. This can speed up SPI flash programming when much
> of the data is unchanged from what is already there.

looks good to me.  i'll give it a spin on a board of mine and then push into 
my sf branch.  i really should write a spi flash simulation so i could just 
test this from gdb ...
-mike
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