Hi,

Well, I've found the cause.

In sys/arch/mac68k/mac68k/machdep.c in the routine 
cpu_startup(void) there is a call to
m68k_make_fpu_idle_frame();

which is fatal if you don't have a FPU.

The code is:
        if (fputype != FPU_NONE) 
	        m68k_make_fpu_idle_frame(); 

A bit of printf debugging shows that my LC040 has fputype 
not set to FPU_NONE and therefore the branch is taken and
I fpu trap.  If I comment out the call to

m68k_make_fpu_idle_frame(); 

I boot just fine.  This all from a very recent current (Monday?
Sunday?)

I poked for a few minutes and I don't see where fputype is
set though.

Thanks!

cheers

bruce


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Bruce ONeel <edoneel@sdf.lonestar.org> wrote:
> Date: Mon, 12 Jan 2004 17:30:39 +0100
> From: Bruce ONeel <edoneel@sdf.lonestar.org>
> Subject: Re: fpu trap with current from 2 Jan
> To: David Rogers <davidrogers23@earthlink.net>
> Cc: port-mac68k@NetBSD.org
> 
> Thanks, I'll look into that.  A kernel built from yesterday's
> current did no better.
> 
> cheers
> 
> bruce
> 
> David Rogers <davidrogers23@earthlink.net> wrote:
> > Date: Mon, 12 Jan 2004 00:41:35 -0600
> > From: David Rogers <davidrogers23@earthlink.net>
> > Subject: Re: fpu trap with current from 2 Jan
> > To: port-mac68k@NetBSD.org
> > 
> > I have a kernel that I built on 12/28/03 that works just fine.  I'm not 
> > sure what changed between then and now.
> > 
> > dave
> > 
> > On Jan 11, 2004, at 5:37 PM, Bob Nestor wrote:
> > 
> > > On Jan 11, 2004, at 12:46 PM, David Rogers wrote:
> > >
> > >> I've been getting something very similar right after it lists 
> > >> available memory.  It says Kernel Illegal Instruction Trap.  I have a 
> > >> IIci with a Daystar Turbo 040 installed so maybe there's more than 
> > >> just FPU problems.  Not sure though.
> > >>
> > >> Here is the dump:
> > >> trap type 2, code = 0x0, v = 0x0
> > >> kernel program counter = 0x1258e
> > >>
> > >> pid = 0, lid = 1, pc = 0001258E, ps = 2704, sfc = 1, dfc = 1
> > >>
> > >> dreg: 00000000 00000001 0011A290 00004AA0 8004002E FEE00020 00000000 
> > >> 00000000
> > >> areg: 00153790 001B9E9C 0006A7B8 00123B68 00153940 01DF1698 001B9F60 
> > >> FFFFCFFC
> > >>
> > >> Hope this helps.  Anyone else having problems?
> > >
> > > Did you happen to leave AppleTalk enabled in MacOS before you booted 
> > > into NetBSD?
> > >
> > > That seemed to cause the problem for me.  Disabling AppleTalk before 
> > > booting made the problem go away.
> > >
> > > -bob
> > >