[Qemu-devel] Re: Fun with sparc (was Re: qemu-ppc can't run static uClibc binaries.)

[Rob Landley <rob@landley.net>]

On Saturday 20 February 2010 11:34:44 Blue Swirl wrote:
> On 2/20/10, Rob Landley <rob@landley.net> wrote:
> >  I don't understand what's going wrong here.  Did the kernel break on
> > sparc sometime between 2.6.18 and 2.6.32 and nobody noticed?  Is sparc
> > using software emulated floating point at the kernel level and that's
> > configured as a module?  (Except I don't think busybox ls uses floating
> > point...)
>
> Sparc32 is not maintained anymore so maybe it broke at some point.
> There was some discussion a few years ago.

Not maintained on the Linux kernel side, or not maintained under qemu?  It 
seems to be working under debian, but the 2.6.18 kernel is from 2006.

> >  Do any sparc people understand what's going on here?  My next step is to
> > grab a 2.6.18 kernel and try to get _that_ to work with the tweaked
> > debian config (and an ext2 root filesystem since squashfs wasn't merged
> > back then and had a format change when it was merged).  But I'm mostly
> > flailing around blind here...
>
> I'm also trying different kernels using my .config. But already 2.6.12
> hangs in ESP probe.

I've got 2.6.32 booting to a command prompt (albeit with serial console and 
intentionall restricted set of hardware).  But then it misbehaves.

I'll try getting 2.6.18 to build with a known .config, and then bisect forward 
if that seems to work...

Thanks,

Rob
-- 
Latency is more important than throughput. It's that simple. - Linus Torvalds