[Buildroot] busybox question

[Emmanuel Riou]

Hi Roman,

please see my comments inline,

Roman Chertov wrote:
> Peter Korsgaard wrote:
>>>>>>> "Roman" == Roman Chertov <rchertov at cs.ucsb.edu> writes:
>>  Roman> Hello,
>>  Roman> I have an ARM920T board that I am trying to get going with buildroot and
>>  Roman> uClibc.  I managed to compile the kernel, and it boots up to the point
>>  Roman> where the login must happen.  Nothing happens at that point.  However,
>>  Roman> the machine runs as I can ping it.  I have tried to init=/bin/sh
>>  Roman> init=/bin/ethtool, but I did not get any output to indicate that
>>  Roman> something started.
>>
>> And you have set console= to something sensible? What is the last output
>> you get from the kernel?
> 
> console=ttyAM0,115200 ip=dhcp noinitrd root=/dev/nfs init=/sbin/init
> nfsroot=192.168.0.1:/proj/tools/buildroot-2009.08/project_build_arm/uclibc/root/
> This is my argument list to the kernel.
> 
> This was my last message from the kernel
> 
> VFS: Mounted root (nfs filesystem).
> 
> Freeing init memory: 120K
> 
> Based on Francisco's private email, I made some nodes in the /dev
> directory as by default, buildroot creates only files and not device
> files with major/minor numbers.  I made the nodes by copying some of the
> devices from the board's default disk while it was running.  Now, when I
> boot, I get the following repeating sequence.
> 
> can't open /dev/~: No such file or directory
> 
> can't open /dev/tty1: No such file or directory
> 
> can't open /dev/tty2: No such file or directory
> 
You have to configure buildroot to generate a tar archive of your 
filesystem, since buildroot uses fakeroot to create the /dev files in 
the archive (buildroot can't create the /dev files in your project 
directory as you are not root). You just have to untar this archive then 
to get your complete root filesystem you're gonna mount via NFS.

Hope this helps,

Emmanuel.


> 
> Looks like the culprit, is the improper device setup.
> 
>> Do you have software floating point support enabled in buildroot?
>> (toolchain->Use software floating point by default)
> 
> This is not set.
> 
>>  Roman> I have the following question.  I can build the default image on the
>>  Roman> board (Debian 2.4, glibc) and mount the buildroot root fs over NFS.
>>  Roman> However, if I try to execute any program, I get the following errors:
>>
>>  Roman> root at ts7000:bin# ./busybox
>>  Roman> -bash: ./busybox: No such file or directory
>>
>> You'll probably have to chroot into the nfs dir to get the dynamic
>> linker to work.
> 
> I will give this a shot later on today.
> 
> Thanks.
> 
> Roman
> 
>>
> 
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