AM67: Driver .ko version magic number doesn't match

Hi Will,

The expert assigned to this thread is currently out of office, please expect a delay in response. Feel free to ping this thread if you don't receive a reply by early next week.

Regards,
Johnson

Hi Johnson,

Anything updated?

thx 

Will

Hi, I am out of office this week, please expect delayed response.

Will Tsai 

When you made the local kernel modifications. did you finish all the steps to update the modules , Image and dtbs in your SD/rootfs?

here is the question
1.so i can't use wic image and input the modified ko in the sd card?
2.i was make menuconfig to set the localversion why after i make linux the kernel release still show the number was not my set?

thx for helping

Hi Will,

Have we tried 

https://software-dl.ti.com/processor-sdk-linux/esd/AM62X/11_01_05_03/exports/docs/linux/Foundational_Components_Kernel_Users_Guide.html#compiling-the-kernel-modules

Best,

-Hong

Hi Will,

I do not understand what the problem is here.

So your questions are:

1.so i can't use wic image and input the modified ko in the sd card?
2.i was make menuconfig to set the localversion why after i make linux the kernel release still show the number was not my set?

For query 1:

Yes you can use a wic image and copy the modified kernel module in SD card. But are you trying to modify and copy only one module or the usual way which is build the source and copy kernel Image and install the modules? If the second option, it should work, just use the commands that we already provide in the TI Processor SDK documentation:

a. make ARCH=arm64 CROSS_COMPILE=aarch64-none-linux-gnu- distclean
b. make ARCH=arm64 CROSS_COMPILE=aarch64-none-linux-gnu- defconfig ti_arm64_prune.config
c. make ARCH=arm64 CROSS_COMPILE=aarch64-none-linux-gnu- menuconfig
d. make ARCH=arm64 CROSS_COMPILE=aarch64-none-linux-gnu- Image modules
e. cp arch/arm64/boot/Image $root/boot
f. make ARCH=arm64 INSTALL_MOD_PATH=$root modules_install

For query 2: 

Changing local version should work. The only thing you should have to do is in step c above, in menuconfig look for:
 Local version - append to kernel release
and add your own string. Here is my quick test: https://gist.github.com/jmenti/fa4858930f3a40472a30ac2f880c87be

Notice the kernel hash: Linux version 6.12.35judytest-g571d47cb9634, which can also be  seen with uname command:

root@am62pxx-evm:~# uname -r
6.12.35judytest-g571d47cb9634

matches the same for kernel modules:

root@am62pxx-evm:~# ls /lib/modules/
6.12.35judytest-g408b0338fa7a 6.12.35judytest-g571d47cb9634

and the pwm-tiehrpwm module that I had modified loaded just fine as you can see with:

root@am62pxx-evm:~# ls /sys/class/pwm/
pwmchip0 pwmchip1 pwmchip2 pwmchip3
root@am62pxx-evm:~# lsmod | grep ehrpwm
pwm_tiehrpwm 12288 0
root@am62pxx-evm:~#

~ Judith

Also to add.

Will Tsai 

Please share the exact diff change you made on top of https://git.ti.com/cgit/ti-linux-kernel/ti-linux-kernel/log/?h=ti-linux-6.12.y 

for DSI and kernel config .