Linux on ml403

Hi,

I have been trying to port Linux on the ML403 board using the 2.4 devel
tree downloaded from montavista site using rsync.The compilation goes
fine with the modifications of some source files and makefiles after
copying the BSP generated from EDK 7.1 (I used some BYU website advice
about porting Linux on XUV2P board). I manage to download the Linux
kernel via xmd, the kernel boots but it has a problem and an exception
0400 seems to occur. Did anyone try the same method and managed it
correctly ? Does anyone have an idea as to why I have this exception ?
How could I investigate this issue not being an expert in  Linux but
just trying to understanding what is going on ?

Best regards, 

JF

Can you post your boot messages?

"jfh" <jean-francois.hasson@fr.thalesgroup.com> wrote in message
news:1143440508.866449.128480@z34g2000cwc.googlegroups.com...
> Hi,
>
> I have been trying to port Linux on the ML403 board using the 2.4 devel
> tree downloaded from montavista site using rsync.The compilation goes
> fine with the modifications of some source files and makefiles after
> copying the BSP generated from EDK 7.1 (I used some BYU website advice
> about porting Linux on XUV2P board). I manage to download the Linux
> kernel via xmd, the kernel boots but it has a problem and an exception
> 0400 seems to occur. Did anyone try the same method and managed it
> correctly ? Does anyone have an idea as to why I have this exception ?
> How could I investigate this issue not being an expert in  Linux but
> just trying to understanding what is going on ?
>
> Best regards,
>
> JF
>

Hi,
Here is the trace when using the kernel 2.4 devel

Xilinx Virtex-II Pro port (C) 2002 MontaVista Software, Inc.
(source@mvista.com)
On node 0 totalpages: 16384
zone(0): 16384 pages.
zone(1): 0 pages.
zone(2): 0 pages.
Kernel command line: console=ttyS0,9600 root=/dev/xsysace/disc0/part3
rw
Xilinx INTC #0 at 0x41200000 mapped to 0xFDFFE000
Calibrating delay loop... 99.73 BogoMIPS
Oops: kernel access of bad area, sig: 11
NIP: 00000000 XER: 0000005E LR: 00000000 SP: C0182E50 REGS: c0182da0
TRAP: 0400
   Not tainted
MSR: 00001030 EE: 0 PR: 0 FP: 0 ME: 1 IR/DR: 11
TASK = c0181020[0] 'swapper' Last syscall: 0
last math 00000000 last altivec 00000000
GPR00: 00000000 C0182E50 C0181020 C0181020 00000000 00000001 C0181120
00000048
GPR08: 00000048 00000000 00000000 00000017 24000022 0000CC60 00000000
00000000
GPR16: 00000000 00000000 00000000 00000000 00001032 00182ED0 00000000
C0000000
GPR24: C019DDB0 00000001 C01A0000 C01A0000 044AA234 00000001 00000000
C0181020
Call backtrace:
00000000 C001C27C C0005F30 C00047C0 C0196064 C01943B8 C019154C
C0002328
Kernel panic: Aiee, killing interrupt handler!
In interrupt handler - not syncing
 <0>Rebooting in 180 seconds..

I have also just tried to use xmon in the kernel which indicates a
kernel stack overflow (?!?).
If this can be of any help understanding the problem.

Best regards,

JF Hasson

On 28 Mar 2006 21:58:52 -0800, "jfh"
<jean-francois.hasson@fr.thalesgroup.com> wrote:

>Hi,
>Here is the trace when using the kernel 2.4 devel
>
>Xilinx Virtex-II Pro port (C) 2002 MontaVista Software, Inc.
>(source@mvista.com)
>On node 0 totalpages: 16384
>zone(0): 16384 pages.
>zone(1): 0 pages.
>zone(2): 0 pages.
>Kernel command line: console=ttyS0,9600 root=/dev/xsysace/disc0/part3
>rw
>Xilinx INTC #0 at 0x41200000 mapped to 0xFDFFE000
...
>C0002328
>Kernel panic: Aiee, killing interrupt handler!
>In interrupt handler - not syncing

In the above, what is "mapped to 0xFDFFE000"?

If it's the interrupt vector table, be aware that the register pointing
to it is only 16 bits wide, holding the 16 MSBs. So the vectors are at
FDFFE000 but the PPC interrupt logic looks for them at FDFF0000.

This doesn't seem to be very clearly documented.

Apologies if this has nothing to do with the problem you are
experiencing...

- Brian

Hi,
     I know this is a bad hack, but just disable the Xilinx INT
controller for now and then compile the kernel. After compiling the
kernel, please try downloading... I guess doing this way would atleast
narrow down the problem...

--
Parag

Jean-Francois,

follow the instructions in the ML403 Reference Design Users Guide (pg 
39). In particular, create the board support package with the Linux MLD 
and use the patch_linux script in the linux sub-directory of the ML403 
reference design. The patch sets bits 1 and 3 in CCR0 which is required 
for ES silicon, i.e. silicon where the PPC405 has a PVR of 0x20011430. 
After applying the patch the problem will be gone.

- Peter


Links:
- ML403 Web Page: http://www.xilinx.com/ml403
- ML403 Users Guide: http://www.xilinx.com/bvdocs/userguides/ug082.pdf
- ML403 reference design: 
http://www.xilinx.com/products/boards/ml403/files/ml403_emb_ref_ppc_81.zip





jfh wrote:
> Hi,
> 
> I have been trying to port Linux on the ML403 board using the 2.4 devel
> tree downloaded from montavista site using rsync.The compilation goes
> fine with the modifications of some source files and makefiles after
> copying the BSP generated from EDK 7.1 (I used some BYU website advice
> about porting Linux on XUV2P board). I manage to download the Linux
> kernel via xmd, the kernel boots but it has a problem and an exception
> 0400 seems to occur. Did anyone try the same method and managed it
> correctly ? Does anyone have an idea as to why I have this exception ?
> How could I investigate this issue not being an expert in  Linux but
> just trying to understanding what is going on ?
> 
> Best regards, 
> 
> JF
> 

Hi,

Thank you all for the answers. I will try the advice of using the patch
delivered by Xilinx which I wasn't aware of.

JF Hasson