TDA4VM: How to enable GPU support on custom filesystem

jianyu huo

Part Number: TDA4VM

Hi experts,

I build a tiny filesystem by buildroot and copy following files from tisdk-default-image-j7-evm to it. I'm sure that pvrsrvkm.ko is loaded.

lib/firmware/rgx.fw.22.104.208.318
lib/modules/5.4.74-g9574bba32a/extra/pvrsrvkm.ko
usr/lib/dri/pvr_dri.so
usr/lib/libtqvalidate.so
usr/lib/libsrv_um.so
usr/lib/libpvr_dri_support.so

I found that vx_app_arm_opengl_mosaic.out failed with "Segmentation fault" and I have no idea with it. Is any more library/firmware/driver needed? Below is log.

root@buildroot:~/gpu# ./vx_app_arm_opengl_mosaic.out
./vx_app_arm_opengl_mosaic.out: /lib64/libstdc++.so.6: no version information available (required by ./vx_app_arm_opengl_mosaic.out)
./vx_app_arm_opengl_mosaic.out: /lib64/libstdc++.so.6: no version information available (required by ./vx_app_arm_opengl_mosaic.out)
./vx_app_arm_opengl_mosaic.out: /lib64/libstdc++.so.6: no version information available (required by ./vx_app_arm_opengl_mosaic.out)
./vx_app_arm_opengl_mosaic.out: /lib64/libstdc++.so.6: no version information available (required by ./vx_app_arm_opengl_mosaic.out)
Setting GPU load to 100 %
Running GPU thermal test app indefinitely in interactive mode. Press q to quit
Segmentation fault

Thanks

over 4 years ago

0 Hemant Hariyani over 4 years ago

TI__Expert 8385 points

Hello,

This seems to be a mismatch between dependencies used by pre-built binaries and your system. Can you please contact your TI representative for futher discussion?

Regards

Hemant

0 jianyu huo over 4 years ago

Prodigy 175 points

Hi Hemant,

I've contacted local suport team but they have no idea neither. Could you please provide me a dependency list so that I can check them one by one.

Thanks.

0 Hemant Hariyani over 4 years ago in reply to jianyu huo

TI__Expert 8385 points

Hello,

You can run ldd on on the evm with a working file system to get the dependency information.

Regards

Hemant

0 jianyu huo over 4 years ago in reply to Hemant Hariyani

Prodigy 175 points

Hi Hemant,

Thank you for your reply, but ldd can not show dependent firmwares and libraries that are dynamic loaded.

I find the solution myselt by

build yocto project in PSDKLA followed TI instructions
copy all files in {PSDKLA}/yocto-build/build/arago-tmp-external-arm-glibc/work/j7_evm-linux/ti-img-rogue-umlibs/1.10.5371573-r9/git/targetfs/j721e_linux/wayland/release to your own filesystem
copy pvrsrvkm.ko from tisdk-default-image-j7-evm to your own filesystem

Now GPU works well.

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TDA4VM: How to enable GPU support on custom filesystem