Re: Hades060 kernel

["A.J.Bink" <a.j.bink@hccnet.nl>]

> On Tue, Jan 15, 2002 at 12:22:45PM +0200, A.J.Bink wrote:
> >     I have the Debian 2.2r4 CD-package (2.2.10) and tried to install it
> >  on a Hades060.
> >  It did not work at all, no screen messages at all.  With my other
> >  machines I found that
> >  when executing the routine __initfunc(void config_atari(void)) ( in
> >  ...../atari/config.c)
> >  the routine will execute a 'pmove' instruction not present on the
> >  68060. I think that
> >  the combination of different 'CONFIG_M680n0' and CONFIG_HADES=y is the
> >  reason for this failure.
>
> this can't be the reason, the 'pmove' instruction is properly hidden
> in 020/030 specific code (although I don't have 2.2.10 sources around
> anymore). It is however quite possible that the kernel loader didn't
> figure out the correct CPU or was given bad CPU information.
> However if that was the case you would hit illegal instructions much
> earlier in head.S.
>
> Did you try debugging over the serial console? A newer kernel might
> also be worth a try, search for "Nick Holgate" & kernel in the archives
> of this ML.
>
> Bye
> Richard

 I copied the files necessary for the install to the HD, added a line 
to BOOTARGS:
debug="par" and started BOOTSTRA.  The program recognized the CPU and
the FPU as 68060 and the model as Hades.
The dump on the printer says:
Linux version 2.2.10 (root@aahz) ..........
Atari hardware found:  ............
*** LINE 1111 ***  FORMAT=0
Current process id is 0
BAD KERNEL TRAP  00000000
PC:  [<0012f8d0>]
 and then register and stack dumps and call traces.
 I started BOOTSTRA in a debugger, stopped it just before jumping to 
the kernel code,
saved the compressed image in a file and looked at it again in the debugger.
There I found that the crash PC-value pointed to the 'pmove' instruction.
In the past I had several kernels crashing on the Hades060 but not on 
the Medusa040.
The Medusa040 has the 'pmove' instruction.

 Thank you for the tip, I will search the archives.

--
 Kind greetings,
   A.J.Bink.