Hangup booting Linux on PPC440GP

Hi,

I have an IBM PPC440GP evaluation board (Ebony) which I am
trying to get Linux up and running on.

I read the Cross development mini-howto and downloaded the relevant
files to an X86 based machine, these were binutils-2.14.90.0.4.1,
gcc-core-3.3 and linux-bk-2.4-devel-2.4.21-pre4. Following the mini-howto
I successfully built the kernel. This kernel is loaded using the IBM
Openbios over the ethernet from a Motorola Starmax (603e based I think)
and mounts the root filesystem over nfs which resides on the Starmax.
Everything looks good until Linux attempts to run /sbin/init, then the
machine hangs up, no panic or anything else displayed on the console. If I
remove /sbin/init then I do get the obvious panic, "No init found.  Try
passing init= option to kernel."

I tried replacing /sbin/init with a static linked program which just does a
printf of "hello world", this hangs in the same way with no message. This
prog was compiled using the Starmax running Yellow Dog V3, kernel
2.4.20-8D / gcc 3.2.2.

Any ideas as to what is wrong would be most appreciated.

Regards,
Steve Boorman


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On Mon, Jul 14, 2003 at 05:31:44PM +0100, Steve Boorman wrote:

machine hangs up, no panic or anything else displayed on the console. If I
remove /sbin/init then I do get the obvious panic, "No init found.  Try
passing init= option to kernel."

I tried replacing /sbin/init with a static linked program which just does a
printf of "hello world", this hangs in the same way with no message. This
prog was compiled using the Starmax running Yellow Dog V3, kernel
2.4.20-8D / gcc 3.2.2.

Do you have math emulation compiled into the kernel?

--Chris

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Am Montag, 14. Juli 2003 18:31 schrieb Steve Boorman:

Everything looks good until Linux attempts to run /sbin/init, then the
machine hangs up, no panic or anything else displayed on the console.

Sounds like our problem with a 405GP cpu. Has the 440GP also an embedded SRAM?
Where do you have locate it? Below or above 0x8000'0000? Locate it above
0x8000'0000 (on 405GP the SRAM uses virtual addresses, below 0x8000'0000 it
disturbes any user tasks...)

Hope it helps
--JB

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