Linux: not able to insert kernel module .ko on beagle bone

deepak ramegowda

Expert 1465 points

Tool/software: Linux

Team

As I am trying to analyze eeprom driver code at24.c

I have taken the source code from the the following link

https://eewiki.net/display/linuxonarm/BeagleBone+Black

I am able to succesfully boot the board and as a next step I am trying to insert the kernel module

I have taken the driver file at24.c of eeprom and added to seprate folder and have compiled using make file an i am confident that i have given the correct cross compiler path linarao and i have generated

the .ko

I have copied the .ko file on my beagle bone black am335x and when i try doing

insmod at24.ko

I get error invalid format

INSMOD:EEROR AT24.KO INVALID FORMAT

Not sure ehats wrong i have used the cross compiler that is downloaded from the link

Kindly let me knw what could be going wrong i adding the library modules!

Thank you

Deepak R

over 8 years ago

0 Kemal R. Shakir over 8 years ago

TI__Guru 55345 points

Hello Deepak,

Please, make sure that the module is built against the loaded kernel in your board.

Best regards,
Kemal

0 deepak ramegowda over 8 years ago in reply to Kemal R. Shakir

Expert 1465 points

Hi
Kemal

Thank for your response
I have made sure in the makefile that the kernel that gets downloaded path is actually given and the same source is used!
I will again experiment from scratch and update the results!

KIndly let me know what the procedure to test this driver once if this module gets inserted from command line and from an application!
Thank you
Deepak R

0 Kemal R. Shakir over 8 years ago in reply to deepak ramegowda

TI__Guru 55345 points

For a basic sanity test you can perform a read/write operation.

0 deepak ramegowda over 8 years ago in reply to Kemal R. Shakir

Expert 1465 points

HI
Team i have used the the attached link for downloading the cross compiler and work !
But when i try the following step i get the following error!

eewiki.net/.../BeagleBone Black

wget -c releases.linaro.org/.../gcc-linaro-5.3.1-2016.05-x86_64_arm-linux-gnueabihf.tar.xz
tar xf gcc-linaro-5.3.1-2016.05-x86_64_arm-linux-gnueabihf.tar.xz
export CC=`pwd`/gcc-linaro-5.3.1-2016.05-x86_64_arm-linux-gnueabihf/bin/arm-linux-gnueabihf-

then when i try
${CC}gcc --version

gcc-linaro-5.3.1-2016.05-x86_64_arm-linux-gnueabihf/bin/arm-linux-gnueabihf-gcc: cannot execute binary file: Exec format error
I AM USING THIS ON X86 SYSTEM 64-BIT ONLY
BY USING THE LINK I AM ABLE TO SUCCESFULLY BOT THE BOARD BUT MY CONCERN IS WITH FAIL ON MY SYSTEM ONLY!
Thank you
Deepak R

0 Kemal R. Shakir over 8 years ago in reply to deepak ramegowda

TI__Guru 55345 points

Linaro 32-bit toolchain support has dropped, you can use it on 64-BIT only.

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Linux: not able to insert kernel module .ko on beagle bone