Different zlib CRC Algorithms

[Joakim Tjernlund]

> > > Why does ppcboot/uboot have two versions of crc32()? What's the
> > > difference between them?
> >
> > The difference is the ^0xffffffff part you decribed above. One is used by
> > uboot for crc'ing images, environment etc. The other for JFFS2 support in
> > uboot.
> 
> So that would confirm my original observation that the kernel does use a 
> slightly different CRC algorithm than userspace zlib.

hmm, does zlib use crc32() at all? I have only seen adler32() in zlib,
I haven't look very hard though.


> 
> It's not a problem - I was just curious to know why.
> 
> Phil
>