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
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
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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participants (3)
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Jerry Van Baren -
Pawel Pastuszak -
tjzkzs