[U-Boot] no kernel console output !

[U-Boot] no kernel console output !

[tjzkzs]

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

[U-Boot] no kernel console output !

[Jerry Van Baren]

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

[U-Boot] no kernel console output !

[Pawel Pastuszak]

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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