[U-Boot] no kernel console output !

Pawel Pastuszak pawelpastuszak at gmail.com
Sat Dec 27 19:39:59 CET 2008


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 at 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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