Re: iMac G5 Status?
On Fri, Jun 03, 2005 at 08:39:12AM +1000, Benjamin Herrenschmidt wrote:
>
> > i have just tried a daily sarge businesscard on a powerbook g5. the installer
> > works just fine using the install-power4 option. I could also resize the hpfs
> > partition using parted (from the command line, and after having disabled the
> > journaling in osx). 2.6.8-power4-smp and 2.6.11-power4-smp both work fine too.
> >
> > i am now trying to compile 2.6.12-rc5 using a config derived from debian's
> > 2.6.11-power4, adding support for smu, suspend, and cpufreq support, but i get
> > a few errors, and a few questions too.
>
> Are you living on a different space/time continuum ? :)
>
> First, there is no such thing as a powerbook g5 yet ...
mmh, maybe a bit hasty sometimes :) it is a powermac, sorry.
> Then, if it's a g5 machine, no kernel supports suspend and cpufreq yet
> neither.
>
> Finally, the SMU support upstream is very basic, I rewrote the driver
> but haven't merged the new one yet.
>
> > first of all, how do i compile a ppc64, and what do i need to boot/use it? i
> > have PPC_PMA64 and PPC64BRIDGE set, but include/asm points to
> > include/asm-ppc64.
>
> You need a biarch (32 & 64 bits) toolchain and make ARCH=ppc64
>
> > > > o Analogue sound output?
> > >
> > > Not yet.
> >
> > Ben, did you not say the -rc4 will have "analog work on some desktop G5" in a
> > previous thread?
>
> Yes, on some deskop G5s, but not on the iMac yet, it's a different chip.
great.
> > > > o Dynamic CPU clock scaling?
> > >
> > > Will be there soon too. Probably along with Fan control.
> >
> > according to the warning in arch/ppc/platforms/pmac_cpufreq.c, using cpufreq on
> > smp kernel is not a good idea. what is the status of this? (btw, the
> > ___save_processor_state call should be replaced by save_processor_state)
> >
> > and what about altivec support? is there no such thing anymore?
>
> None of that code in arch/ppc/* is suitable for ppc64 machines anyway,
> you are mixing 32 and 64 bits kernel here. The cpufreq code isn't
> working on any SMP machine at the moment anyways due to the way it
> recalibrates the jiffies.
>
> Altivec is supported on both 32 and 64 bits kernels.
any reason why altivec is not set in the 2.6.8 and 2.6.11 debian
kernels?
> > > > What is the best/easiest way to actually install debian on an imac?
> > > > Should i be using the newfangled debian-installer release candidates, or
> > > > something else?
> > >
> > > I suppose you want somebody to build you a 64 bits kernel with proper
> > > SMU support and boot that with the debian install initrd...
> >
> > When CONFIG_PMAC_SMU is set, i get
>
> This option is not supported on 32 bits kernel, it's a Kconfig mistake
> that it lets you turn it on.
>
> > ater deactivating CONFIG_PMAC_SMU, i get:
> >
> > drivers/built-in.o(.pmac.text+0x37fc): In function `pmac_suspend_devices':
> > : undefined reference to `pmac_tweak_clock_spreading'
> > drivers/built-in.o(.pmac.text+0x39b8): In function `pmac_wakeup_devices':
> > : undefined reference to `pmac_tweak_clock_spreading'
> >
> > which i still get after deactiving SWSUSPEND and USB SUSPEND
>
> Just don't try to build 32 bits kernels for G5, this isn't supported
> anymore and I will remove the option soon
sorry, just for precision, does that mean, the power4 flavour is
deprecated in newer kernels in favour of the pseries? i quite liked the
idea of being able to install a full 32 bits system on a G5.
thanks, paul
Reply to: