Linux kernel 2.6 on IBM RS/6000 7025-F40

Linux kernel 2.6 on IBM RS/6000 7025-F40

[Christophe Simon]

Hi there,

Did someone succeeded in compiling a running 2.6 kernel on an IBM RS/6000 
7025-F40 (PReP arch) ? I have one of these machines, and it runs with a 
2.4.22 kernel built using the instructions gathered on 
http://www.solinno.co.uk/7043-140/

It seems that this machine is quite problematic.

I tried to compile my own kernel with a stock 2.6.16.19, and after that 
2.6.7 patched with the files I found for the 2.6.7 (at 
http://www.solinno.co.uk/7043-140/files/2.6.7/), but the system refuses to 
boot with those twoo kernels  (the machine reboots or freezes before writing 
any piece of information on the console...).

The site seems not to move anymore, and I'd like to have a 2.6 kernel 
running because of his better performances ans extended functionalities, and 
I'd like not to be stalled on 2.4.22 kernel...

I crawled the web hours and hours (Google is my friend, but it didn't help 
me...) and I didn't find anything...

Could someone help me !

Thanks a lot !

Christophe SIMON

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Re: Linux kernel 2.6 on IBM RS/6000 7025-F40

[Benjamin Herrenschmidt]

On Wed, 2006-06-07 at 15:30 +0000, Christophe Simon wrote:
> Hi there,
> 
> Did someone succeeded in compiling a running 2.6 kernel on an IBM RS/6000 
> 7025-F40 (PReP arch) ? I have one of these machines, and it runs with a 
> 2.4.22 kernel built using the instructions gathered on 
> http://www.solinno.co.uk/7043-140/
> 
> It seems that this machine is quite problematic.
> 
> I tried to compile my own kernel with a stock 2.6.16.19, and after that 
> 2.6.7 patched with the files I found for the 2.6.7 (at 
> http://www.solinno.co.uk/7043-140/files/2.6.7/), but the system refuses to 
> boot with those twoo kernels  (the machine reboots or freezes before writing 
> any piece of information on the console...).
> 
> The site seems not to move anymore, and I'd like to have a 2.6 kernel 
> running because of his better performances ans extended functionalities, and 
> I'd like not to be stalled on 2.4.22 kernel...
> 
> I crawled the web hours and hours (Google is my friend, but it didn't help 
> me...) and I didn't find anything...

I've successfully booted a 43p, I don't know about F40 though. What is
the last message on the console when you try to boot the kernel ?

Ben.

Re: Linux kernel 2.6 on IBM RS/6000 7025-F40

[Christophe Simon]

Hi,

Sorry, I was long. I tried to boot my 7025-F40 with this kernel 
http://www.solinno.co.uk/7043-140/files/2.6.9-rc2/ (the novga version) but 
the I have a kernel panic while booting. Here's what is printed out on my 
terminal :

********************************************************************
loaded at:     01000400 0116BF4C
relocated to:  00800000 0096BB4C
zimage at:     00805A30 009623BC
avail ram:     00400000 00800000

Linux/PPC load: console=tty0 console=ttyS0 root=/dev/sda3
Uncompressing Linux...done.
Now booting the kernel
Total memory = 384MB; using 1024kB for hash table (at c0400000)
Linux version 2.6.9-rc2 (leigh@george) (gcc version 3.3.2) #5 Wed Sep 15 
14:43:1
9 BST 2004
PReP architecture
IBM planar ID: ff
MPIC at 0xdffc0000 (0x1ffc0000), length 0x00040000 mapped to 0xeffbf000
Built 1 zonelists
Kernel command line: console=tty0 console=ttyS0 root=/dev/sda3
OpenPIC Version 1.0 (4 CPUs and 16 IRQ sources) at effbf000
OpenPIC timer frequency is 4.166666 MHz
PID hash table entries: 2048 (order: 11, 32768 bytes)
time_init: decrementer frequency = 16.662524 MHz
Console: colour dummy device 80x25
Dentry cache hash table entries: 65536 (order: 6, 262144 bytes)
Inode-cache hash table entries: 32768 (order: 5, 131072 bytes)
Memory: 385024k available (2240k kernel code, 1004k data, 164k init, 0k 
highmem)
Mount-cache hash table entries: 512 (order: 0, 4096 bytes)
NET: Registered protocol family 16
PCI: Probing PCI hardware
Machine check in kernel mode.
Caused by (from SRR1=c9030): Unknown values in msr
Oops: machine check, sig: 7 [#1]
NIP: C001AA28 LR: C02F8734 SP: C03F1F70 REGS: c03f1ec0 TRAP: 0200    Not 
tainted
MSR: 000c9030 EE: 1 PR: 0 FP: 0 ME: 1 IR/DR: 11
TASK = c082dba0[1] 'swapper' THREAD: c03f0000Last syscall: 120
GPR00: C02F8720 C03F1F70 C082DBA0 C0252DF8 C0252D7C C0330000 C0340000 
448FE150
GPR08: C0330000 C0330000 00000005 80800864 24000028 00000000 00000000 
00000000
GPR16: 00000000 00000000 00000000 00000000 A5040113 00000000 00000000 
00000000
GPR24: 00000000 00C1AA00 40000000 2F646576 00000000 C0330000 00000001 
00000000
Call trace: [c02f378c]  [c02ee690]  [c0003b8c]  [c000a96c]
Kernel panic - not syncing: Attempted to kill init!
<0>Rebooting in 180 seconds..
********************************************************************

After that I tried with a stock 2.6.16.19 kernel thinking that perhaps this 
machine was integrated, but noting appears on the terminal (not even the 
"Linux/PPC load:" statement...) and the server reboots, and reboots again...

Is it from any help ?

Is there something to do to have a working 2.6 kernel on an 7025-F40 ?

Thanks a lot

Christophe SIMON




>From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
>To: Christophe Simon <titof3000@hotmail.com>
>CC: linuxppc-dev@ozlabs.org
>Subject: Re: Linux kernel 2.6 on IBM RS/6000 7025-F40
>Date: Fri, 09 Jun 2006 14:38:35 +1000
>
>On Wed, 2006-06-07 at 15:30 +0000, Christophe Simon wrote:
> > Hi there,
> >
> > Did someone succeeded in compiling a running 2.6 kernel on an IBM 
>RS/6000
> > 7025-F40 (PReP arch) ? I have one of these machines, and it runs with a
> > 2.4.22 kernel built using the instructions gathered on
> > http://www.solinno.co.uk/7043-140/
> >
> > It seems that this machine is quite problematic.
> >
> > I tried to compile my own kernel with a stock 2.6.16.19, and after that
> > 2.6.7 patched with the files I found for the 2.6.7 (at
> > http://www.solinno.co.uk/7043-140/files/2.6.7/), but the system refuses 
>to
> > boot with those twoo kernels  (the machine reboots or freezes before 
>writing
> > any piece of information on the console...).
> >
> > The site seems not to move anymore, and I'd like to have a 2.6 kernel
> > running because of his better performances ans extended functionalities, 
>and
> > I'd like not to be stalled on 2.4.22 kernel...
> >
> > I crawled the web hours and hours (Google is my friend, but it didn't 
>help
> > me...) and I didn't find anything...
>
>I've successfully booted a 43p, I don't know about F40 though. What is
>the last message on the console when you try to boot the kernel ?
>
>Ben.
>
>

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