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Altera_Forum's avatar
Altera_Forum
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9 years ago

Where is the kernel header files for driver module?

Hi, I have a Arrow Cyclone V FPGASoC kit, and am studying the linux driver. In order to compile the driver for the platform, I need the kernel header files which matches the kernel version runn...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
9 years ago

Please ignore the question in my post above.

As far as I know, compiling driver for desktop linux requires kernel header files which are usually set under /usr/src, and with the same kernel version number;

Compiling driver for embedded linux usually needs the linux source code direcory where you build your zImage for the board, not header files.

In other words:

(1) For desktop linux: make -C /usr/src/(header file directory) M=${PWD} modules;

(2) For embedded linux: make ARCH=arm -C /linux-socfpga-ret-ltsi M=${PWD} modules;

I have successfully compiled a simple driver for my Arrow SoC like this, but the difference are not sure. Could be that desktop linux is too large for you to have all source code; and embedded linux usually not that large so that you can work under its source code directory which already contains header files.