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[cobalt-developers] compiling a 2.4.20 kernel for a RaQ 550

Hello,

I want to compile a 2.4.20 kernel for a RaQ 550. I have downloaded the
stock 2.4.20 kernel sources, and patched with the debian package
kernel-patch-2.4-cobalt (see the page
http://packages.debian.org/testing/devel/kernel-patch-2.4-cobalt.html
for more info).

Now, I'm searching the config I need to boot. I have try to do my own
config, but doing a "boot net kernel" of it result of a kernel BUG. Here
is the trace on the serial port when booting this kernel.

====================================================================

booting kernel...
Linux version 2.4.20 (bol@xenon) (gcc version 2.95.4 20011002 (Debian prerelease)) #9 Mon Feb 17 03:38:22 CET 2003
BIOS-provided physical RAM map:
 BIOS-e801: 0000000000000000 - 000000000009f000 (usable)
 BIOS-e801: 0000000000100000 - 0000000040000000 (usable)
128MB HIGHMEM available.
896MB LOWMEM available.
On node 0 totalpages: 262144
zone(0): 4096 pages.
zone(1): 225280 pages.
zone(2): 32768 pages.
Kernel command line: console=ttyS0,115200 debug ip=on root=/dev/nfs nfsroot=/nfsroot-x86,rsize=8192,wsize=8192
Initializing CPU#0
Detected 1263.113 MHz processor.
Calibrating delay loop... 2523.13 BogoMIPS
kernel BUG at page_alloc.c:100!
invalid operand: 0000
CPU:    0
EIP:    0010:[<c012b4f6>]    Not tainted
EFLAGS: 00010286
eax: 01000000   ebx: c10b3ff0   ecx: c10b3ff0   edx: 00000000
esi: 00000000   edi: c02fad04   ebp: 00038000   esp: c02b1f5c
ds: 0018   es: 0018   ss: 0018
Process swapper (pid: 0, stackpage=c02b1000)
Stack: c10b3ff0 00003bff c02fad04 00038000 c1000020 00037000 c10b3f90 c029e9d4
       c1030020 c029e9ec 00000206 ffffffff 000015ff c012bd17 c02b9828 00000004
       00091000 c0105000 01ffffd4 00000000 00002d5e c02b99ae c029e920 c02b88bd
Call Trace:    [<c012bd17>] [<c0105000>] [<c0105000>] [<c0105000>]

Code: 0f 0b 64 00 9f 3c 25 c0 83 7b 08 00 74 08 0f 0b 66 00 9f 3c
 <0>Kernel panic: Attempted to kill the idle task!
In idle task - not syncing
 <0>Rebooting in 5 seconds..waiting for devices to flush..........done
cobalt.c:cobalt_restart: can not restart - halting
waiting for devices to flush..........done
cobalt.c:cobalt_power_off: can not power off

====================================================================

Where can I find this config ? Or, if this config is not available, what
can be causing this problem ?

Thanks in advance for any help.

                Olivier
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