Device Driver Build guide

From OMAPpedia

[edit] Steps for Building and executing the Video/Framebuffer testscenarios:

1) Clone the device drivers from the git://dev.omapzoom.org/pub/scm/richo/device_driver_test.git, currently the master branch.

2) First export the following parameters :

 export CROSS_COMPILE=arm-none-linux-gnueabi-
 export KDIR=path to kerneldirectory
 export HOST=arm-none-linux-gnueabi
 export ARCH=arm
 export PATH=$PATH:<toolchainpath>

 for framebuffer: export TESTSUITES="framebuffer"
 for video tests: export TESTSUITES="video"

3) There are two ways for building:

3.1) 1. execute the  make command
     The test binaries are created in the "build" directory.
     At the end of successful build you will see 2 folders
     utils and video/framebuffer in the "build" folder.
     cd build/video/scripts/ or cd build/framebuffer/scripts/    

3.2) 1. goto required folder
        cd framebuffer/test_code
     2. Execute make
        make
     Testsuite binaries would be created in framebuffer/test_code/bin directory.

4) The test binaries are created in the "build" directory. At the end of successful build you will see 2 folders utils and video/framebuffer in the "build" folder.

5) cd build/video/scripts/ or cd build/framebuffer/scripts/

6) To excute the scenarios run this command.

  ./test_runner -S <ScenarioNo>

7) The above command would execute the testscenario without human intervention.

8) If the "-S" option is not given in the above command, the script will ask for the key press for various tasks. And the user needs to press the appropriate key to feed the responce.

Note: Based on the .config of the kernel exported, testsuite would be built for OMAP3 or OMAP4.

Note: Build fails for utils/bc

      Before running make always run "git reset --hard HEAD" and "make distclean" to avoid linking   
      of obsolete files.
      1. goto utils/bc folder.
      2. delete "missing" file.
      3. automake -a -c
      4. CC=arm-none-linux-gnueabi-gcc ./configure --host=arm-none-linux-gnueabi
      5. make 

Note: Build fails for video testsuite for linux kernel v3.0.

[edit] Building Tomi's testsuite

1) clone the test tree

git clone git://gitorious.org/linux-omap-dss2/omapfb-tests.git

2) Modify Makefile to point ot your kernel

  cd omapfb-tests/
  vi Makefile
  Replace: CFLAGS=-I/home/valkeine/work/linux/usr/include -O2 -Wall
  with your kernel path like:
  CFLAGS=-I/home/mayuresh/kernel-display/include -O2 -Wall

3) Do a clean:

  make CROSS_COMPILE=arm-none-linux-gnueabi- clean

4) Do a make:

  make CROSS_COMPILE=arm-none-linux-gnueabi-

Binaries would be created in the same folder.

For Further configuration details refer: http://omappedia.org/wiki/Bootargs_for_enabling_display

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