chrp mmu and booting.

Sven Luther sven.luther at
Sat Jan 24 05:54:33 EST 2004

On Fri, Jan 23, 2004 at 12:44:10PM -0600, Peter Bergner wrote:
> 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.

Yeah, but in my case, i have no yaboot, and i know that these boxes are
also capable of booting from the OF.

But then, how comes the OF translate call is able to map the address 0
to the 0x10000 address ?


Sven Luther

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