From: Sven Luther <sven.luther@wanadoo.fr>
To: Peter Bergner <bergner@vnet.ibm.com>
Cc: Sven Luther <sven.luther@wanadoo.fr>,
linuxppc-dev list <linuxppc-dev@lists.linuxppc.org>
Subject: Re: chrp mmu and booting.
Date: Fri, 23 Jan 2004 19:54:33 +0100 [thread overview]
Message-ID: <20040123185433.GB5125@iliana> (raw)
In-Reply-To: <1074883450.2842.9.camel@otta.rchland.ibm.com>
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 ?
Friendly,
Sven Luther
** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/
next prev parent reply other threads:[~2004-01-23 18:54 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-01-23 11:17 chrp mmu and booting Sven Luther
2004-01-23 18:44 ` Peter Bergner
2004-01-23 18:54 ` Sven Luther [this message]
2004-01-23 20:49 ` Peter Bergner
2004-01-24 1:06 ` Benjamin Herrenschmidt
2004-01-24 20:01 ` Geert Uytterhoeven
2004-01-26 7:52 ` Segher Boessenkool
2004-01-24 1:08 ` Benjamin Herrenschmidt
2004-01-24 8:21 ` Sven Luther
2004-01-24 11:36 ` Benjamin Herrenschmidt
2004-01-26 7:51 ` Segher Boessenkool
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