[U-Boot] [PATCH 2/2 v12] Introduced btrfs file-system with btrload command

[Wolfgang Denk <wd@denx.de>]

Dear Adnan Ali,

In message <518BB8C7.3090704@codethink.co.uk> you wrote:
> 
> > - Why do we have to calculate the crc32c_table[] at runtime?  Our
> >    regular CRC code uses a pre-calculated table; we should do the same
> >    here.
>         This is part of the port. But pre-calculated table can be manually
> created.

Not manually.  It should be done at compile time, suing basically the
same code.

> > - Compare the code for crc32c_cal() in the patch with the definition
> >    of DO_CRC(x) in "lib/crc32.c" - to me, it appears to be the same for
> >    little endian code (it is redundant?), but different for big endian
> >    systems - which raises the question if this code has ever been
> >    tested on a BE machine?
>          My code uses lib/crc32.c and i have only tested it on
>        mx53loco manchine.

I tend to believe thatit will not work on a big endian system, then.

> > - The code claims to be derived from "Linux kernel crypto/crc32c.c";
> >    but I cannot find such code in that file.
>        I think yes but part of part from syslinux. I have also added
>      SHA1 of commit so don't know.

Please provide an exact reference where this code is coming from.

> > - The implementation of crc32c_cal() suffers from a few other problems
> >    (like not triggering the watchdog, which will cause problems on
> >    systems that use one).
>        I think that is true as its not using main line crc32 code.

We probably should do that, then.

Thanks.

Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
Drawing on my fine command of language, I said nothing.