Hi Jerry,
see inline comments.
On ven, 2008-03-28 at 13:31 -0400, Jerry Van Baren wrote:
> Luigi 'Comio' Mantellini wrote:
> > Hi everyone,
> >
> > this patch adds the lzma support with the following constraints:
> >
> > - it doesn't install the LZMA SDK files. I provide the import_lzma.sh
> > script to import the needs file from a lzma sdk release
> > - the imported lzma sdk files are _not touched_
> > - the lzma support is enabled defining the CONFIG_LZMA define
> > - I haven't tested this patch
> > - Use this patch at your own risk
> >
> > The patch creates:
> >
> > - the lib_lzma directory with the import_lzmasdk.sh script and a simple
> > front-end to LzmaDecode() fuction
> > - the include/lzma directory with some include files to use in the
> > U-Boot code
> >
> > modifies:
> >
> > - common/do_bootm.c file
> > - common/image.c file
> > - include/image.h file
> >
> > Please read the lib_lzma/README.txt file.
> >
> > Luigi
>
> Hi Luigi,
>
> I have a stupid question in return: why do we want lzma (7zip) added to
> u-boot? The linux/uboot world is dominated by gzip. I realize 7zip has
> advantages over gzip albeit incremental, not revolutionary IIRC.
>
LZMA usually performs better than gzip in terms compression ratio. My
application has a small flash memory and I need to keep two (2) kernel
images...
>From these observations born my need to save as much memory as possible.
Best regards,
luigi
> I am not aware of proposals or implementations of kernels compressed
> with lzma (could well be my ignorance). Adding more code for minimal
> benefits is a hard sell (we already have plenty of bloat :-O).
>
> Best regards,
> gvb
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