Compiler/PROCESSOR-SDK-AM57X: how do I rebuild cmemk.ko and pvrsrvkm.ko . They are not being built during: 'make modules'

Tom Antles

Tool/software: TI C/C++ Compiler

sdk version: sdk-linux-am57xx-evm-03.00.00.04

When I boot linux, I get this error: cmemk: disagrees about version of symbol module_layout

When I build modules using: 'make modules' and then re-install them using: sudo make ARCH=arm INSTALL_MOD_PATH=/srv/rootfs modules_install,

I also get this error:

depmod: WARNING: /srv/rootfs/lib/modules/4.4.12-g3639bea54a/extra/pvrsrvkm.ko needs unknown symbol pci_save_state
depmod: WARNING: /srv/rootfs/lib/modules/4.4.12-g3639bea54a/extra/pvrsrvkm.ko needs unknown symbol drm_open
depmod: WARNING: /srv/rootfs/lib/modules/4.4.12-g3639bea54a/extra/pvrsrvkm.ko needs unknown symbol pci_request_region
depmod: WARNING: /srv/rootfs/lib/modules/4.4.12-g3639bea54a/extra/pvrsrvkm.ko needs unknown symbol drm_poll
depmod: WARNING: /srv/rootfs/lib/modules/4.4.12-g3639bea54a/extra/pvrsrvkm.ko needs unknown symbol pci_enable_device

For some reason, neither cmem nor pvrsrvkm are built when executing the: 'make modules' cmd.

It seems they both resides in the: rootfs/lib/modules/4.4.12-g3639bea54a/extra/ folder.

How do I rebuild these modules to get them in sync with my kernel?

over 9 years ago

0 Kemal R. Shakir over 9 years ago

TI__Guru 55345 points

Hello Tom,

Please, make sure that the modules are built against the current loaded kernel at your board, also don't forget to run a depmod -a command to generate the new dep and map files.

Best regards,
Kemal

0 Tom Antles over 9 years ago in reply to Kemal R. Shakir

Intellectual 370 points

I already am aware of what you said, but as my original request says: I CAN NOT build the SPECIFIC modules I mentioned above! I do not know what make target to use.

Can you please tell me what make target I need to use to compile these modules that reside in the /extra folder of the rootfs for the 3.00 SDK version mentioned above?

As a matter of fact! the cmem module src does NOT even exsist in the linux kernel directory, it exists in the sdk-linux-am57xx-evm-03.00.00.04/board-support/extra-drivers/cmem-mod-4.11.00.00+gitAUTOINC+852e97b558 directory. But even if I go to the root of where it exists I can not seem to get a make target to build in that directory and there is no readme file telling me how to do it.

So the question still remains: How do I compile this module?

0 Kemal R. Shakir over 9 years ago in reply to Tom Antles

TI__Guru 55345 points

Just type make ti-sgx-ddk-km or make cmem-mod from the Processor SDK's top directory to compile the extra module you need.

0 Tom Antles over 9 years ago in reply to Kemal R. Shakir

Intellectual 370 points

OK thank you for your reply. I did try make cmem-mod, and it does seem to build the cmem module, but NOT until AFTER rebuilding the whole kernel first!! Very annoying since it takes a long time (30 + minutes) to rebuild the whole kernel, but never the less, it works. Even if the kernel was just built, it still rebuilds it every time. Very annoying. Doesn't seem like this should happen.

0 Tom Antles over 9 years ago in reply to Tom Antles

Intellectual 370 points

Oh, and one more annoying thing, it not only rebuilt the whole kernel, it replaced the .config file with the default! Which is NOT what I wanted

0 Kemal R. Shakir over 9 years ago in reply to Tom Antles

TI__Guru 55345 points

Please, check the Rules.make file, there you can change the config file you prefer.

0 Tom Antles over 9 years ago in reply to Kemal R. Shakir

Intellectual 370 points

Excellent! That is what I had already done but I didn't realize it was the approved mechanism.

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Compiler/PROCESSOR-SDK-AM57X: how do I rebuild cmemk.ko and pvrsrvkm.ko . They are not being built during: 'make modules'