[OLPC-devel] Re: belt and suspenders...

[Jim Gettys]

Yeah, that was my guess.  And building a USB stack is *lots* of work.

I'd guess the only option would be off of flash.

I think for the moment, putting effort into being paranoid on reflash is
probably the best return on investment we can get.
                               - Jim


On Tue, 2006-07-11 at 13:21 -0600, Ronald G Minnich wrote:
> Jim Gettys wrote:
> > The following went through my mind this morning:
> > 1) first line of defense is idiot proof flash update utility, per the
> > message I sent out some weeks ago.
> > 2) Here's the question: is it feasible to checksum the Linux as
> > Bootloader image in the flash, and if it is corrupted, do a direct boot
> > off of a USB device or jffs2 image instead as a means of recovery?
> > 
> > I have no clue if this idea is worth the bits of this mail message, but
> > I thought I should ask, on the "boy, Jim can be paranoid" theory ;-).
> 
> 
> I think embedding a usb stack in linuxbios would eat us alive. jffs2, 
> maybe. But if the linux checksum is bad, you're in so much trouble that 
> I'm not sure you can live.
> 
> ron
-- 
Jim Gettys
One Laptop Per Child