chrp mmu and booting.
bergner at vnet.ibm.com
Sat Jan 24 05:44:10 EST 2004
On Fri, 2004-01-23 at 05:17, Sven Luther wrote:
> Now, does this mean that the chrp of does enable the mmu before booting,
> and does program it in a way so that the translate (0) call will result
> in 0x10000, or do i miss something ?
On IBM CHRP hardware, OF executes in real mode (ie, relocate off). It
then branches to yaboot/kernel still in real mode. It's not until a
fair ways into the kernel boot that we turn relocate on (after we're
done making calls to OF). This also means that Yaboot executes in
real mode as well on IBM CHRP machines.
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