Re: crash on startup / high BAT fallout

[Michael <macallan%netbsd.org@localhost>]

Hello,On Tue, 14 Feb 2012 19:13:20 +0100
Frank Wille <frank%phoenix.owl.de@localhost> wrote:

> Michael wrote:
> 
> > the attached patch allows -current to boot on my iBook G4, to some
> > degree at least. [...]
> 
> Good work!

Turns out pmap_extract() on DMA buffers fails on CPUs that support HIGHBAT and 
XBSEN. No idea why (yet). On CPUs without that we're making it to multiuser ( I 
tested it on a 603ev Performa and riz tried a 750 and a 7400 box )

> > [...] the other problem was that we tried to map the
> > upper 256MB which includes the ROM, which fails now so we only map
> > 0xf0000000 - 0xfbffffff.
> 
> What I don't understand: why didn't it fail in the past?

No clue. I can only guess that something else maps the ROM.

> > So, this needs to be tested on ofppc and other
> > macppc boxes. If you get any (green) kernel putput at all ( as opposed
> > to some obscure OF error and no kernel output ) then it worked.
> 
> ofppc (Pegasos2) still works fine.

That's what I wanted to know before pestering releng.

have fun
Michael