RE: [TOSP_Developers] Boot Compression & Checksumming

[<the...@li...>]

Oh, and one more thing. Could you please provide a Makefile that will
compile all of it? (Or a Makefile.in so we can go straight to autoconf.)
Much appreciated! Thanks!

Ben

> -----Original Message-----
> From: the...@li...
> [mailto:the...@li...]
> Sent: Friday, August 01, 2003 3:33 AM
> To: the...@li...
> Subject: RE: [TOSP_Developers] Boot Compression & Checksumming
>
>
> Cool!  Sorry for my lack of e-mails here - I've been unable to connect for
> the last couple days. Alls good now.
>
> On the 4MB RAM:
>
> How about we make this a compile option? (It could be added later if we
> wanted to skip it now, if it was too much to do.)
>
> On the Checksum:
>
> That actually sounds great, and would give us the ability to do even a
> simple security check.  I would put a compile option to disable
> it and leave
> it in as default, at least when we get a lot closer to the 1.0 release,
> though it might be neat to see it go through until then too.
>
> Thanks!
>
> Ben
>
> > I have nearly completed a decompressor based upon the
> > bzip2 utility source code. The problem is not the size
> > of the decompression code but the 2.7Mb of memory that
> > the decompressor uses. If we plan on supporting 4Mb
> > memory platforms this could be problematic. I would
> > have thought that 8Mb would be the minimum platform to
> > support but we can fiddle the bzip2 code to reduce
> > memory usage if we need 4Mb RAM support. Also do we
> > want to build in a checksummer into the second stage
> > bootloader? If we do MD4 is quick and easy to
> > implement, and we can checksum the compressed kernel.
> > I can leave it as a compile-in option and turn it off
> > until we have a finalised kernel.
> >
> > Ian
> >
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