[OpenBIOS] [Qemu-devel] Re: QEMU OpenBIOS booting?

[Laurent Vivier]

Le lundi 20 avril 2009 à 22:39 +0300, Blue Swirl a écrit :
> On 4/20/09, M. Warner Losh <imp at bsdimp.com> wrote:
> > In message: <f43fc5580904191144y1fd8e4d6m3321855d0c558250 at mail.gmail.com>
> >             Blue Swirl <blauwirbel at gmail.com> writes:
> >
> > : On 4/19/09, M. Warner Losh <imp at bsdimp.com> wrote:
> >  : > In message: <f488382f0904190128l4383a56eu67a2f16eb338e61c at mail.gmail.com>
> >  : >
> >  : >             Steven Noonan <steven at uplinklabs.net> writes:
> >  : >  : I eventually decided it made more
> >  : >  : sense to get QEMU working instead. I did notice that the pre-OpenBIOS
> >  : >  : version of QEMU was able to boot Mac OS X via Open Hack'Ware, so I was
> >  : >  : annoyed to find that OpenBIOS didn't have such support. So, I might as
> >  : >  : well add it.
> >  : >
> >  : >
> >  : > Open Hackware was barely enough to boot older versions of Linux.
> >  : >  Other operating systems that needed more extensive properties from the
> >  : >  OpenFirmware device tree failed to boot because they weren't present.
> >  : >  I was involved in a large effort to get FreeBSD/powerpc booting on
> >  : >  QEMU only to have it fail utterly because the amount of hacking on
> >  : >  OpenHackWare needed was rather large and mysterious...
> >  :
> >  : This is what I get with OpenBIOS:
> >  : >> *** Boot failure! No secondary bootloader specified ***
> >  :
> >  : 0 > boot cd:,\boot\loader cd:0
> >  : Consoles: Open Firmware console
> >  :
> >  : FreeBSD/Open Firmware/PowerPC bootstrap loader, Revision 0.1
> >  : (root at xserve.lan.xcllnt.net, Thu Apr 16 18:47:58 UTC 2009)
> >  : Memory: 131072KB
> >  : Booted from: cd
> >  :
> >  : Loading /boot/defaults/loader.conf
> >  : /boot/kernel/kernel data=0x4a4ce0+0x3d4e4 syms=[0x4+0x454f0+0x4+0x5a4b9]
> >  : /
> >  : Hit [Enter] to boot immediately, or any other key for command prompt.
> >  : Booting [/boot/kernel/kernel]...
> >  : Kernel entry at 0x13dac0 ...
> >  : panic: moea_bootstrap: no space to copy translations
> >  : Uptime: 1s
> >
> >
> > That's similar to the one that I've seen as well.  The problem with
> >  this one, IIRC, is that FreeBSD/powerpc is trying to setup the memory
> >  translations for the MMU and the 'translations' property length is
> >  zero, or something like that...
> 
> Right, the error comes from this line:
> http://fxr.watson.org/fxr/source/powerpc/powerpc/mmu_oea.c?v=FREEBSD70#L825

I think '/memory/available' is badly encoded and doesn't reflect the
actual memory availability..

Regards,
Laurent