Cyclone V SOC WS-3 linux device driver

Linux Kernel
1

Hello All,

I am using Cyclone V from Terasic Soc kit and now trying to make driver for Hps to FPGA bridge.

I have Quartus and SOCEDS 15.0.

I have started with Workshop 3 from rocketboard. https://rocketboards.org/foswiki/vie...AlteraSoCLinux

So, I download image, set ENVIRONMENT variable.

After that I try to execute first example which is lab_module.

So basically I create KBUILD file, make file and after that While, I am trying to executete Make file I got error: makefile:2 *** OUT_DIR is undefined, bad environment. you point OUT_DIR to the linux kernel build ouutput Directory & stop.(PFA)

Basically I am not able to execute make and it seems to be compilation error, and I am not able to build the kernel module.

I already cross check environmental variable, its:
export ARCH=arm; (for ARM achitecture)
export CROSS_COMPILE= /toolchain/arm-linux-gnueabihf (cross compiler toolchain)
export OUT_DIR=/socfpga-3.10-ltsi (linux kernel source tree)

Could any one help me to solve this?

2

Hello,
this error message is defined in Makefile of this Workshop. You can see it exactly at lines 14-16:
ifndef OUT_DIR
$(error OUT_DIR is undefined, bad environment, you point OUT_DIR to the linux kernel build output directory)
endif

So, are You absolutely sure that the variable OUT_DIR is set properly?