From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Wed, 23 Oct 2002 14:08:50 +1000 From: David Gibson To: Todd Poynor Cc: linuxppc-embedded@lists.linuxppc.org Subject: Re: very minor 405GP and 405GPr PCI difference Message-ID: <20021023040850.GC1198@zax> References: <20021002053422.GL1848@zax> <20021002100312.A2240@home.com> <20021003011044.GB1102@zax> <20021003081439.C4643@home.com> <20021004024832.GG1933@zax> <3D9DDEE9.5070909@mvista.com> <20021008041758.GG32555@zax> <3DA3347B.1000004@mvista.com> <20021009021403.GQ32555@zax> <3DB5C963.8020201@mvista.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <3DB5C963.8020201@mvista.com> Sender: owner-linuxppc-embedded@lists.linuxppc.org List-Id: On Tue, Oct 22, 2002 at 02:55:47PM -0700, Todd Poynor wrote: > > David Gibson wrote (regarding Rainier PMM1 bios_fixup in MVL): > > >Well, it may be in a different place, but it looks like it has the > >same problem. It is still establishing a PCI window at PLB address > >0x80000000, which is the same address used for the PMM0 window - or is > >that also different in the MV kernel? > > > >I'd be trying to work out what that mapping's actually for, first. I > >still can't see how it can possibly work - if there are overlapping > >PMM windows, what actually happens to accesses in that (PLB) range? > > Yes, it looks like MVL only sets up the one window using PMM1... we've > started an effort to have the Rainier-knowedgeable folks get the code > sync'ed up with the community and this should happen soon. Hang on, so just to clarify - MVL sets up PMM1 with the code you posted, but doesn't set up PMM0 anywhere? From my reading of that code, it sets up a window at the same address as the "standard" (Walnut) mapping, except that it is only 128kB instead of 1GB. Is there a reason that Rainier must have such a small window? -- David Gibson | For every complex problem there is a david@gibson.dropbear.id.au | solution which is simple, neat and | wrong. http://www.ozlabs.org/people/dgibson ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/