Re: installing on a g5

[Christian Groessler <chris%groessler.org@localhost>]

On 04/17/14 00:23, Matt Thomas wrote:

> On Apr 16, 2014, at 3:04 PM, Christian Groessler 
> <chris%groessler.org@localhost> wrote:
>
> > On 04/15/14 23:18, Matt Thomas wrote:
> > > On Apr 15, 2014, at 11:54 AM, Christian Groessler 
> > > <chris%groessler.org@localhost> wrote:
> > >
> > > > My machine has 3.5GB RAM.
> > > NetBSD won't like that much ram.  Make sure that at most 2GB is made available.
> >
> > I've removed 2GB and it still hangs.
> >
> > I've digged a little bit further, and it crashes in 
> > sys/dev/rasops/rasops8.c(rasops8_putchar12)
> > when it does the first assignment to rp[0]. rp is 0xa00a8004 and ri->ri_bits is 
> > 0xa0009e04.
> >
> > I assume ri->ri_bits should point to the frame buffer. How do I check if this 
> > address is correct?
> Sounds like a mapping for the framebuffer is missing from the kernel pmap


Could be. I didn't find where the frame buffer is mapped (but I didn't search 
too hard), so
I just disabled the function by letting it return without doing something.

Now it hangs in sys/arch/powerpc/oea/pmap.c, line 3412, where it executes the 
instruction

        __asm volatile ("mtsrin %0,%1"
                      :: "r"(KERNELN_SEGMENT(i)|SR_PRKEY), "r"(i << 
ADDR_SR_SHFT));

In case it's relevant, I didn't mention that this is a 2-processor machine.
I've installed Linux on it and here's the output of /proc/cpuinfo:

[g5:~]$ cat /proc/cpuinfo
processor       : 0
cpu             : PPC970, altivec supported
clock           : 2000.000000MHz
revision        : 2.2 (pvr 0039 0202)

processor       : 1
cpu             : PPC970, altivec supported
clock           : 2000.000000MHz
revision        : 2.2 (pvr 0039 0202)

timebase        : 33333333
platform        : PowerMac
model           : PowerMac7,3
machine         : PowerMac7,3
motherboard     : PowerMac7,3 MacRISC4 Power Macintosh
detected as     : 336 (PowerMac G5)
pmac flags      : 00000000
L2 cache        : 512K unified
pmac-generation : NewWorld
[g5:~]$


regards,
chris