Re: [Ltib] Fwd: i need some help..pls

[Mike Nelson]

Greetings:

I tried to run Linux 2.6.34 on the Phytec 3250 board and found that it
did not have the ethernet configured.  I went back into LTIB, selected
Linux 2.6.27 and it worked fine with rootfs over NFS.  Did not circle
back to figure out what may be wrong with 2.6.34.

I have also had no success with using LTIB as a development
environment.  I followed the LTIB documentation to create a package
for a simple "hello world" application.  My goal was to have the
hello_world application appear in the rootfs.  LTIB could not find the
package.  LTIB seems to be hard-wired to look for packages in certain
directories, and changing the configuration file to point to a Local
Package Pool doesn't seem to work for picking up my package.

So, now we are using makefiles to build the kernel and u-boot.  We
simply overlay the rootfs with whatever user application files we want
and access rootfs over NFS to the host.

Regards:

Mike Nelson, http://michaeltnelson.com
mobile: 1-650-291-7343
office: 1-650-257-7565



On Thu, Aug 19, 2010 at 14:18, malay jajodia <address@hidden> wrote:
> Hi All,
>
> Finally i was able to solve the issue i had earlier with using hello module
> example. So i thought it may help somebody else as well who are new to
> LPC32xx boards.
>
> Initially i was able to compile and build the kernel UImage, U-boot and RFS
> for linux 2.6.34. Then i tried to mount the RFS on SD card (ext2
> partitioned) and boot my PHY3250 board. Although my board was booting, i was
> not able to insert modules even the hello example that comes with the LTIB
> packages. The error i was getting 'Invalid module format'.
>
> Although the error message was insinuating that the built module differed in
> version with the current kernel running on my board. But i was given the
> board with pre-setup u-boot and uImage and i had not even the slightest idea
> of how the u-boot and  uImage can be changed to match with my module's linux
> version.
>
> i had the preconceived notion that the uImage and u-boot.bin present in the
> boot folder inside rootfs is automatically used by the S1L bootlaoder to
> boot up the system and run the linux kernel.  Actually, we need to use these
> two files to manually change the older u-boot and uImage, the documentation
> of them is well illustrated at www.lpclinux.com . This is how we can keep
> ourselves distant from such issues.
>
> More than facing such errors, it is important to delve a bit deeper to
> understand how our board actually work and each of them differ quite a lot.
> So more we work on different platform more knowledge we gain on these
> subjects.
>
> Finally, thanks to all the members of ltib forum especially to Kevin and
> Stuart.
>
> -Malay
>
>
> ---------- Forwarded message ----------
> From: malay jajodia <address@hidden>
> Date: Wed, Aug 18, 2010 at 12:44 PM
> Subject: i need some help..pls
> To: address@hidden
>
>
> Hi Everybody,
>
> Though i am new to his forum i have been receiving help constantly from you
> all. Thanks a lot. But i need a little more favor.
>
> I am simply trying to build hello_mod example and run it on my PHY3250 but
> every time i use insmod at directory misc, it shows me the error "cannot
> insert 'modexample.ko': invalid module format".
> I have followed all the steps given in README file inside the hello module
> folder. Also i have selected the option of 'Leave the sources after
> building'. I have tried this module on both 2.6.27 and 2.6.34 kernel, but
> cannot find out what the real problem is. So please help me find the
> solution because i am stuck on it for a couple of days now.
>
> I really appreciate your help.
>
> Thanks,
> Malay
> Email: address@hidden
>
>
>
> --
> Malay Jajodia
> Contact No: 618-303-4805
> Email: address@hidden
>
> _______________________________________________
> LTIB home page: http://ltib.org
>
> Ltib mailing list
> address@hidden
> http://lists.nongnu.org/mailman/listinfo/ltib
>
>