Kerenel crashes every other Boot..
ravi.rao at rflelect.com
ravi.rao at rflelect.com
Thu Aug 23 02:28:00 EST 2007
Hi Wolfgang,
The image is getting loaded from the flash. I am able to hook up
BDI2000 and dump various locations.
I dumped first few kilo byte locations of the image and looks no
corruption.
I also tried this on another board and l see the same behaviour.
Also the board I am using is an existing product but it is running 2.4.18
kernel.
Hardware of our next gen product will be based on the existing board but
it will run 2.6.21 kernel.
So to speed software development I am using the existing product as the
refernce and trying to put 2.6.21.
Other paculiar thing that I have seen is Once I reset the power to chasis
or pull the card out and put it back in it gets stuck at "Now booting the
kernel" stage and upon hooking BDI2000 it looks like it hangs in
early_init function at the call to memset_io(PTRRELOC(&__bss_start), 0,
_end - __bss_start). Only way to get it back working is by burning a 2.4
kernel rebooting the card and again burning the 2.6 one..Any idea what may
be happening.....
The only difference i see in 2.4.x initial code and 2.6.x init code is the
wired tlb setup in head_4xx.S. Do you know why the wired tlb setup code
got removed from 2.6 ??
Thanks,
Ravishankar Govindarao
RFL Electronics Inc.
E-mail : Ravi.Rao at rflelect.com
Voice: 973.334.3100 Ext. 233
Fax: 973.334.3863
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Wolfgang Reissnegger <wolfgang.reissnegger at xilinx.com>
08/22/2007 11:36 AM
To
ravi.rao at rflelect.com
cc
linuxppc-embedded at ozlabs.org
Subject
Re: Kerenel crashes every other Boot..
Hi Ravi,
my first guess would be that there is a problem with your RAM. Could be
the RAM timing or just a bad RAM chip.
Try to run the image on another board, see if it works there. If not you
can check the RAM timing. Given that you have a custom board there could
be some design issues.
Where are you loading the image from? Maybe there is a problem in
transferring the image into RAM so the image download corrupts the data?
Cheers,
Wolfgang
ravi.rao at rflelect.com wrote:
>
> Hi,
> Some times it crashes and many times it comes back with an error as
> Junk in compressed Image..
> Below is the screen dump..
> **************** When it does not work **************************
> BOOT MONITOR:
> .. eth driver not initialized. command aborted
> .. Invoking Linux PPC Kernel Loader at 0xfe800000
> .. Boot Parms: 0x3f72314, Flags: 0x1014, Verbose: 0x3
>
> loaded at: FE800000 FEA16124
> relocated to: 00400000 00616124
> board data at: 03F72314 03F72510
> relocated to: 00613000 006131FC
> zimage at: 00404EDC 0061289C
> avail ram: 00617000 04000000
>
> Linux/PPC load: console=ttyS0,9600 ip=dhcp root=nfs
> Uncompressing Linux...done.
> Now booting the kernel
> Linux version 2.6.21 (root at localhost.localdomain) (gcc version 4.1.0
> 20060304 (TimeSys 4.1.0-3)) #27 Wed Aug 22 10:10:4
> 2 EDT 2007
> MAC 0: 00:50:cc:0c:e2:30
> MAC 1: 00:50:c2:0c:e2:31
> Zone PFN ranges:
> DMA 0 -> 16384
> Normal 16384 -> 16384
> early_node_map[1] active PFN ranges
> 0: 0 -> 16384
> Built 1 zonelists. Total pages: 16256
> Kernel command line: console=ttyS0,9600 root=/dev/rd/0
> ip=10.2.254.33:10.2.1.1:10.2.0.1:255.255.0.0:unknown:eth0
> PID hash table entries: 256 (order: 8, 1024 bytes)
> Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)
> Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
> Memory: 61952k available (1188k kernel code, 280k data, 1504k init, 0k
> highmem)
> Mount-cache hash table entries: 512
> Kernel panic - not syncing: junk in compressed archive
> Rebooting in 180 seconds..
>
> ******************** When it works **************************
> BOOT MONITOR:
> .. eth driver not initialized. command aborted
> .. Invoking Linux PPC Kernel Loader at 0xfe800000
> .. Boot Parms: 0x3f72314, Flags: 0x1014, Verbose: 0x3
>
> loaded at: FE800000 FEA16124
> relocated to: 00400000 00616124
> board data at: 03F72314 03F72510
> relocated to: 00613000 006131FC
> zimage at: 00404EDC 0061289C
> avail ram: 00617000 04000000
>
> Linux/PPC load: console=ttyS0,9600 ip=dhcp root=nfs
> Uncompressing Linux...done.
> Now booting the kernel
> Linux version 2.6.21 (root at localhost.localdomain) (gcc version 4.1.0
> 20060304 (TimeSys 4.1.0-3)) #27 Wed Aug 22 10:10:4
> 2 EDT 2007
> MAC 0: 00:50:cc:0c:e2:30
> MAC 1: 00:50:c2:0c:e2:31
> Zone PFN ranges:
> DMA 0 -> 16384
> Normal 16384 -> 16384
> early_node_map[1] active PFN ranges
> 0: 0 -> 16384
> Built 1 zonelists. Total pages: 16256
> Kernel command line: console=ttyS0,9600 root=/dev/rd/0
> ip=10.2.254.33:10.2.1.1:10.2.0.1:255.255.0.0:unknown:eth0
> PID hash table entries: 256 (order: 8, 1024 bytes)
> Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)
> Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
> Memory: 61952k available (1188k kernel code, 280k data, 1504k init, 0k
> highmem)
> Mount-cache hash table entries: 512
> JFFS2 version 2.2. (NAND) (C) 2001-2006 Red Hat, Inc.
> io scheduler noop registered
> io scheduler anticipatory registered
> io scheduler deadline registered
> io scheduler cfq registered (default)
> Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing enabled
> serial8250: ttyS0 at MMIO 0x0 (irq = 0) is a 16550A
> serial8250: ttyS1 at MMIO 0x0 (irq = 1) is a 16550A
> RAMDISK driver initialized: 1 RAM disks of 16384K size 1024 blocksize
> loop: loaded (max 8 devices)
> i2c /dev entries driver
> IBM IIC driver v2.1
> ibm-iic0: using standard (100 kHz) mode
> Freeing unused kernel memory: 1504k init
> serial console detected. Disabling virtual terminals.
> init started: BusyBox v0.60.2 (2003.04.29-11:32+0000) multi-call binary
> Bummer, could not run '/etc/init.d/rcS': No such file or directory
>
> Please press Enter to activate this console.
> sh-2.05#
>
> Ravishankar Govindarao
> RFL Electronics Inc.
> E-mail : _Ravi.Rao at rflelect.com_ <mailto:Ravi.Rao at rflelect.com>
> Voice: 973.334.3100 Ext. 233
> Fax: 973.334.3863
>
>
>
>
> _CONFIDENTIALITY NOTE_
>
> This e-mail, including any attachments, may contain confidential and/or
> legally privileged information. The Information is intended only for
> the use of the individual or entity named on this e-mail . If you are
> not the intended recipient, you are hereby notified that any disclosure,
> copying, distribution, or the taking of any action in reliance on the
> contents of this transmitted Information is strictly prohibited.
> Further, if you are not the intended recipient, please notify us by
> return e-mail and delete the Information promptly.
>
>
>
>
>
>
>
>
> *Wolfgang Reissnegger <wolfgang.reissnegger at xilinx.com>*
>
> 08/22/2007 11:15 AM
>
>
> To
> ravi.rao at rflelect.com
> cc
> linuxppc-embedded at ozlabs.org
> Subject
> Re: Kerenel crashes every other Boot..
>
>
>
>
>
>
>
>
> Hi Ravi,
>
> you need to provide more information, for example, where does the kernel
> crash, any serial console output that you see when it crashes, etc.
>
> Cheers,
> Wolfgang
>
>
> ravi.rao at rflelect.com wrote:
>>
>> Hi All,
>> I have a PPC 405EP custom target. I based most of my software on
the
>> EP405 Taihu reference and now I am able to load the 2.6.21 kernel and
>> with a minimum initramfs I also get the busy box prompt. I see a
strange
>> poblem it fails(linux crashes) every other boot. Can any one please
tell
>> me what may be happening ???
>> Thanks,
>> Ravishankar Govindarao
>> RFL Electronics Inc.
>> E-mail : _Ravi.Rao at rflelect.com_ <mailto:Ravi.Rao at rflelect.com>
>> Voice: 973.334.3100 Ext. 233
>> Fax: 973.334.3863
>>
>>
>>
>>
>> _CONFIDENTIALITY NOTE_
>>
>> This e-mail, including any attachments, may contain confidential and/or
>> legally privileged information. The Information is intended only for
>> the use of the individual or entity named on this e-mail . If you are
>> not the intended recipient, you are hereby notified that any
disclosure,
>> copying, distribution, or the taking of any action in reliance on the
>> contents of this transmitted Information is strictly prohibited.
>> Further, if you are not the intended recipient, please notify us by
>> return e-mail and delete the Information promptly.
>>
>>
>>
>>
>>
>>
>>
>>
>>
------------------------------------------------------------------------
>>
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