GRUB on OLPC / XO
rmh at aybabtu.com
Tue Jan 15 11:36:12 EST 2008
On Tue, Jan 15, 2008 at 01:06:43PM +0100, Robert Millan wrote:
> > > /* Load pre-loaded modules and free the space. */
> > > grub_register_exported_symbols ();
> > > - grub_load_modules ();
> > > +// grub_load_modules ();
> > Why?
> I still don't know. Memory corruption I think. I'm investigating.
Ok, this would explain it:
_start: 0x10000, _end: 0x1f804
Using memory for heap: addr=0x100000, end=0x400000
Using memory for heap: addr=0x2000, end=0x9ffff
Welcome to GRUB!
See how our core image and the second heap chunk overlap. I'm not sure if this
is a bug in OFW's /memory/available, but in any case it doesn't hurt to add a
generic sanity check in our memory manager to avoid this sort of breakage.
It's also be useful to protect our own stack, etc..
What do you think?
<GPLv2> I know my rights; I want my phone call!
<DRM> What use is a phone call, if you are unable to speak?
(as seen on /.)
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