* [U-Boot] no kernel console output !
2008-12-27 6:29 ` [U-Boot] no kernel console output ! tjzkzs
@ 2008-12-27 12:45 ` Jerry Van Baren
2008-12-27 18:39 ` Pawel Pastuszak
1 sibling, 0 replies; 3+ messages in thread
From: Jerry Van Baren @ 2008-12-27 12:45 UTC (permalink / raw)
To: u-boot
Hi Tony,
tjzkzs wrote:
> I use at91sam9260ek board, forgot to mention this. last time I said:
>
> hi all,
> when i use u-boot 1.1.5 boot kernel 2.6.22, no kernel console output,
> development enviorment i use:
> cross_compiler: arm-2007-eldk.iso
No console output can be caused by several things, all hard to debug
since you are running blind.
I'm not an arm expert, but u-boot 1.1.5 is suspiciously old, especially
when trying to boot a fairly recent linux kernel. Can you upgrade it?
Can you boot an older version of linux with your 1.1.5 u-boot?
Do you get any console output in the linux memory buffer?
<http://www.denx.de/wiki/view/DULG/LinuxPostMortemAnalysis>
When you halt the processor with your debugger, what is it doing? Where
is it? What procedure is it in? Can you get a stack trace to see where
it came from?
Are you passing the right options on the command line to tell linux what
console parameters are? (Is your "atag" info right? I'm ignorant of
how this works, just know there is something there.)
<http://www.arm.linux.org.uk/developer/booting.php>
> Best regards,
> Tony Zheng
Good luck,
gvb
^ permalink raw reply [flat|nested] 3+ messages in thread
* [U-Boot] no kernel console output !
2008-12-27 6:29 ` [U-Boot] no kernel console output ! tjzkzs
2008-12-27 12:45 ` Jerry Van Baren
@ 2008-12-27 18:39 ` Pawel Pastuszak
1 sibling, 0 replies; 3+ messages in thread
From: Pawel Pastuszak @ 2008-12-27 18:39 UTC (permalink / raw)
To: u-boot
I see that you have a space between ttyS0 and the baud rate of the bootargs
it should be a coma
console=ttyS0,115200
Pawel
On Sat, Dec 27, 2008 at 1:29 AM, tjzkzs <tjzkzs@163.com> wrote:
> I use at91sam9260ek board, forgot to mention this. last time I said:
>
> hi all,
> when i use u-boot 1.1.5 boot kernel 2.6.22, no kernel console output,
> development enviorment i use:
> cross_compiler: arm-2007-eldk.iso
> kernel: 2.6.22
> patches: 2.6.22-at91.patch.gz & 2.6.22-at91-exp.patch.gz
> u-boot?u-boot-1.1.5
> u-boot patch: u-boot-1.1.5_atmel_1.5.diff.bz2
> i got u-boot and the kernel from www.linux4sam.org as well as all patches
> above.
> u-boot env:
> bootdelay=3
> baudrate=115200
> ethaddr=00:13:20:dc:8b:2b
> ipaddr=192.168.118.104
> serverip=192.168.118.105
> netmask=255.255.255.0
> bootargs=mem=64M console=ttyS0 115200 root=/dev/mtdblock1 rootfstype=yaffs2
> rw
> stdin=serial
> stdout=serial
> stderr=serial
> u-boot output:
> U-Boot> bootm 20100000
> ## Booting image at 20100000 ...
> Image Name: Linux-2.6.22
> Image Type: ARM Linux Kernel Image (uncompressed)
> Data Size: 1394428 Bytes = 1.3 MB
> Load Address: 20008000
> Entry Point: 20008000
> Verifying Checksum ... OK
> OK
>
> Starting kernel ...
>
> Uncompressing
> Linux...........................................................................................
> done, booting the kernel.
> at here, no output anymore, a problem according to console initialization?
> the code from atmel and i have checked, no need to change, then about the
> kernel i use? should i change another kernel version ? any advise will be
> appreciated !
> Best regards,
> Tony Zheng
>
> _______________________________________________
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> U-Boot at lists.denx.de
> http://lists.denx.de/mailman/listinfo/u-boot
>
>
^ permalink raw reply [flat|nested] 3+ messages in thread