[LinuxBIOS] Etherboot FILO

yhlu yinghailu at gmail.com
Fri Sep 22 18:02:20 CEST 2006

in the current kernel, there is one option for size optimization and
compiler check.
when it is enabled, my 64 bit kernel size is reduced form 2M to 1.8M. ( bZImage)


On 9/22/06, Richard Smith <smithbone at gmail.com> wrote:
> > > I think Etherboot and FILO are dead almost, because we intend to put tiny
> > > kernel and kexec on the flash.
> >
> > Tiny kernel, like 32kb?
> Not with linux.  He's talking about the tiny- patches that have been
> (mostly) integrated in to the mainline linux kernel.  Using these
> patches linux gets much smaller.  Although its still pretty large.
> > Or tiny kernel, like replace bios completely?
> For OLPC we have linuxbios+kernel+initrd all in 896KiB. (We lose
> 128KiB of our 1MiB due to some other firmware)   It has USB and can
> boot jffs2 or ext3 filesystems and small graphical boot selector with
> fancy icons.  It also has a busybox ash shell for when the booting
> fails.
> With the new LZMA compression we plan to get TCP/IP stuck in there as well.
> So with 1MiB you can now have all the functionality of etherboot+filo.
> Can you get there for smaller parts? Don't know yet.  If you drop
> jffs2 all the shell stuff then  512KiB has a really good chance.
> 256KiB will be a bit more of a challenge.  You may have to move to an
> "in kernel" loader.
> --
> Richard A. Smith
> --
> linuxbios mailing list
> linuxbios at linuxbios.org
> http://www.openbios.org/mailman/listinfo/linuxbios

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