Make your kernel non SMP enabled.
If it's the same hardware I have used, the cpu was changed to a x86 compatible microcontroller called Vortex86sx.
If this is the case you will also need to apply a patch to allow for propper IDE and chipset functionallity to get IDE and USB, Ethernet etc to work. I ported the patch they have for download (earlier kernel version) to the current build, but unfortunatelly i'm not in the office for another 2 weeks, so I can't post it.
Mikael
On Fri, May 30, 2008 at 12:49 PM, Marian Aldenhövel <
marian.aldenhoevel@xxxxxxxxxxxxxxx> wrote:
Hi,
I have a T2 build for a little "semi-embedded" System. Builds and
runs fine.
Unfortunately the requirements have shifted under me and the vendor
has changed Chips without notice. Now we have about 90 of the boxes
that my kernel does not boot on.
The symptom is that it stops right away. Typed from off the screen
as I don't know any other way of getting the stuff out of a dead
system:
> invalid opcode: 0000 [#1] SMP
> modules linked in:
>
> Pid: 0, comm: swapper Not tainted
> EIP: 0060: [<c02b6b0a>] EFLAGS: 00000246 CPU: 0
> EIP is at identify_cpu+0x193/0x2bf
... more register dumps
> Call Trace:
> [<c0380510>] identify_boot_cpu+0xa/0x14
> [<c03805a1>] check_bugs+0xa/0xce
> [<c037984d>] start_kernel+0x2d1/0x2e3
... more dumped data
> Kernel panic - not syncing: Attempted to kill the idle task!
Am I right to assume that the kernel cannot identify my CPU?
Well. Neither could I :-). The vendor finally sent me the output of
cat /proc/cpuinfo so they seem to have a linux built for the new
chip but are playing hard to get in giving more information like
what kernel and the config used to build it.
> processor : 0
> vendor_id : SiS SiS SiS
> cpu family : 5
> model : 0
> model name : ff/00
> stepping : 5
> cpu MHz : 200.008
> fdiv_bug : no
> hlt_bug : no
> f00f_bug : no
> coma_bug : no
> fpu : yes
> fpu_exception : yes
> cpuid level : 1
> wp : yes
> flags : fpu tsc cx8 mmx
> bogomips : 398.95
I gather that is a SiS 55x System-on-a-chip.
My kernel is built from T2-Head, Kernel 2.6.25.4. Architecture is x86/generic,
so no specific optimizations selected.
I have tried configuring the 2.6.25.4 kernel manually (make menuconfig) to
see wether there were any specific options for that CPU/chipset but did
not find any.
Any hints on what I could try?
Ciao, MM
--
Marian Aldenhövel, Rosenhain 23, 53123 Bonn
http://www.marian-aldenhoevel.de
"I ran some quick calculations on it. He's about 80% on the right
track. That leaves him only 20% dead when he crashes." Bob C
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