[ECOS] BOOPT bootfile

Grant Edwards grante@visi.com
Thu Jan 30 14:55:00 GMT 2003


On Thu, Jan 30, 2003 at 11:36:09AM +0100, Andrew Lunn wrote:
> On Thu, Jan 30, 2003 at 11:28:47AM +0100, Magnus Ekhall wrote:

> > What is required to BOOTP load RedBoot boot from LAN? Where
> > does the BOOTP store its downloaded bootfile, and how do I
> > compile RedBoot so that it would work?
> 
> Im not sure i understand your question.
> 
> Do you want RedBoot to use the information in the bootp reply
> to download in image from a server and then execute that image?
> 
> If so, as far as i know, RedBoot does not support this. You
> could add this though.

I added this two years ago.  I submitted a patch, but the patch
was declined.  Those in charge said that some non-existent
features in boot scripts were "the right way" to do things.
Meanwhile, those script features are still (AFAIK) non-existent.

> Reboot understands SREC and ELF images and supports getting an
> image from TFTP. All you need to add it code to extract the
> filename and server name from the bootp reply and then control
> the tftp client code and jump into the image after it has been
> loaded.

FWIW, the patch I submitted is at

      http://sources.redhat.com/ml/ecos-discuss/2001-03/msg00227.html

The patch assumes the downloaded file is in SREC format.  The
version I actually ship assumes it's a binary file (saves quite
a bit on download time).

-- 
Grant Edwards
grante@visi.com

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