Re: [LinuxBIOS] Etherboot FILO

[Lu, Yinghai]

Not yet.

I think Etherboot and FILO are dead almost, because we intend to put tiny kernel and kexec on the flash.

Also I like to try to OLPC kernel + ramdisk + kexec, it seems it can not compiled on AMD64 version Linux.

I hope we can have 64 bit version and ramdisk. Even it is some bigger, but it could less bugs..

YH

________________________________

From: [e-mail] [mailto:[e-mail]] On Behalf Of steve yannalfo
Sent: Thursday, September 21, 2006 12:12 PM
To: [e-mail]
Subject: [LinuxBIOS] Etherboot FILO

Are there plans to update FILO to FILO-0.5 (which includes grub) in etherboot-5.4.2 ?

thanks 
steve

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[LinuxBIOS] Etherboot FILO

[Al Boldi]

Lu, Yinghai 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?

Or tiny kernel, like replace bios completely?

Thanks!

[LinuxBIOS] Etherboot FILO

[Richard Smith]

> > 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.

[LinuxBIOS] Etherboot FILO

[yhlu]

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)

YH

On 9/22/06, Richard Smith  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.