[U-Boot] Performance problems with gunzip

[Detlev Zundel]

Hi Andreas,

> I try to unzip a WinCE kernel with the U-Boot gunzip routine. It is working,
> but it takes roughly 1min to uncompress a 10MB zip file. 
> I am working with a PXA270 platform. What could be the reason for the worst
> performance? 

Very likely the disabled instruction and data caches.  Not that I know
for sure, but I'm pretty confident that either both or at least the data
cache is not enabled per default.

There was some discussion about enabling them, but the work never got
done IIRC.

Cheers
  Detlev

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