i.MX ProcessorsのトピックRe: IMX6 Dual GPU problem

IMX6 Dual GPU problem

ali_sarlak — Wed, 06 Apr 2016 07:28:27 GMT

Hello experts, I've a voipac (Rex basic) imx6Dual board (http://www.voipac.com/#iMX6-REX-13212111) and I want to work on GPU, so I use Linux 3.14 (http://www.voipac.com/downloads/imx/iMX6_Rex/Module/src/linux/) and Linaro 4.9 + VFPv3-D16 , buildroot 2016 to make rootfs and also I use imx-gpu-viv-5.0.11.p7.4-hfp for my graphic user space libraries and demo files.

Here is my arm-linux-gnueabihf-gcc -v :

Using built-in specs.
COLLECT_GCC=/home/super/Desktop/work/out/host/opt/ext-toolchain/bin/arm-linux-gnueabihf-gcc
COLLECT_LTO_WRAPPER=/home/super/Desktop/work/out/host/opt/ext-toolchain/bin/../libexec/gcc/arm-linux-gnueabihf/4.9.2/lto-wrapper
Target: arm-linux-gnueabihf
Configured with: /cbuild/slaves/oorts/crosstool-ng/builds/arm-linux-gnueabihf-linux/.build/src/gcc-linaro-4.9-2014.09/configure --build=i686-build_pc-linux-gnu --host=i686-build_pc-linux-gnu --target=arm-linux-gnueabihf --prefix=/cbuild/slaves/oorts/crosstool-ng/builds/arm-linux-gnueabihf-linux/install --with-sysroot=/cbuild/slaves/oorts/crosstool-ng/builds/arm-linux-gnueabihf-linux/install/arm-linux-gnueabihf/libc --enable-languages=c,c++,fortran --disable-multilib --enable-multiarch --with-arch=armv7-a --with-tune=cortex-a9 --with-fpu=vfpv3-d16 --with-float=hard --with-pkgversion='crosstool-NG linaro-1.13.1-4.9-2014.09 - Linaro GCC 4.9-2014.09' --with-bugurl=https://bugs.launchpad.net/gcc-linaro --enable-__cxa_atexit --enable-libmudflap --enable-libgomp --enable-libssp --with-gmp=/cbuild/slaves/oorts/crosstool-ng/builds/arm-linux-gnueabihf-linux/.build/arm-linux-gnueabihf/build/static --with-mpfr=/cbuild/slaves/oorts/crosstool-ng/builds/arm-linux-gnueabihf-linux/.build/arm-linux-gnueabihf/build/static --with-mpc=/cbuild/slaves/oorts/crosstool-ng/builds/arm-linux-gnueabihf-linux/.build/arm-linux-gnueabihf/build/static --with-isl=/cbuild/slaves/oorts/crosstool-ng/builds/arm-linux-gnueabihf-linux/.build/arm-linux-gnueabihf/build/static --with-cloog=/cbuild/slaves/oorts/crosstool-ng/builds/arm-linux-gnueabihf-linux/.build/arm-linux-gnueabihf/build/static --with-libelf=/cbuild/slaves/oorts/crosstool-ng/builds/arm-linux-gnueabihf-linux/.build/arm-linux-gnueabihf/build/static --enable-threads=posix --disable-libstdcxx-pch --enable-linker-build-id --enable-plugin --enable-gold --with-local-prefix=/cbuild/slaves/oorts/crosstool-ng/builds/arm-linux-gnueabihf-linux/install/arm-linux-gnueabihf/libc --enable-c99 --enable-long-long --with-mode=thumb --disable-multilib --with-float=hard
Thread model: posix
gcc version 4.9.2 20140904 (prerelease) (crosstool-NG linaro-1.13.1-4.9-2014.09 - Linaro GCC 4.9-2014.09)

After that I tried to run (/opt/viv_samples/tiger/tiger) but I ran into :

eglGetDisplay fail.

InitEgl fail!

In this case what should I do?

Re: IMX6 Dual GPU problem

igorpadykov — Wed, 06 Apr 2016 11:47:08 GMT

Hi Ali

according to Table 12-4. Cortex-A9 Core configuration

i.MX6DQ Reference Manual, core configuration does not include

fpu, only neon

http://cache.nxp.com/files/soft_dev_tools/doc/support_info/iMX6DQPRM.pdf

so seems gcc command line should not use "fpu***" :

http://stackoverflow.com/questions/18785527/whichneon-vfp-vfp3-should-i-specify-for-the-mfpu-when-evaluate-and-compare-flo

One can try SDK and BSPs with gpu demos from NXP i.MX6 product page

Board Support Packages (35)

L4.1.15_1.0.0_MX6QDLSOLO (REV L4.1.15_1.0.0)

http://www.nxp.com/products/microcontrollers-and-processors/arm-processors/i.mx-applications-processors/i.mx-6-processors/i.mx6qp/sabre-board-for-smart-devices-reference-design-based-on-the-i.mx-6-series:RDIMX6SABREBRD?fpsp=1&tab=Design_Tools_Tab

Regarding Rex examples, it may be recommended to post on support of this board,

as every board vendor customize BSPs for own boards and provides support for them.

Best regards

igor

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Re: IMX6 Dual GPU problem

ali_sarlak — Wed, 06 Apr 2016 14:08:44 GMT

Dear Igor,

Thank you for your prompt reply, I changed the compiler and arm-linux-gnueabi-gcc -v became:

Using built-in specs.
COLLECT_GCC=./arm-linux-gnueabi-gcc
COLLECT_LTO_WRAPPER=/home/super/Desktop/work/arm-linux-gnueabi/bin/../libexec/gcc/arm-linux-gnueabi/4.6.4/lto-wrapper
Target: arm-linux-gnueabi
Configured with: /home/super/Downloads/crosstool-ng-1.20.0/.build/src/gcc-linaro-4.6-2013.05/configure --build=i686-build_pc-linux-gnu --host=i686-build_pc-linux-gnu --target=arm-linux-gnueabi --prefix=/home/super/x-tools/arm-linux-gnueabi --with-sysroot=/home/super/x-tools/arm-linux-gnueabi/arm-linux-gnueabi/sysroot --enable-languages=c,c++ --with-arch=armv7-a --with-cpu=cortex-a9 --with-fpu=neon --with-float=softfp --with-pkgversion='crosstool-NG 1.20.0' --enable-__cxa_atexit --disable-libmudflap --disable-libgomp --disable-libssp --disable-libquadmath --disable-libquadmath-support --with-gmp=/home/super/Downloads/crosstool-ng-1.20.0/.build/arm-linux-gnueabi/buildtools --with-mpfr=/home/super/Downloads/crosstool-ng-1.20.0/.build/arm-linux-gnueabi/buildtools --with-mpc=/home/super/Downloads/crosstool-ng-1.20.0/.build/arm-linux-gnueabi/buildtools --with-ppl=/home/super/Downloads/crosstool-ng-1.20.0/.build/arm-linux-gnueabi/buildtools --with-cloog=/home/super/Downloads/crosstool-ng-1.20.0/.build/arm-linux-gnueabi/buildtools --with-libelf=/home/super/Downloads/crosstool-ng-1.20.0/.build/arm-linux-gnueabi/buildtools --with-host-libstdcxx='-static-libgcc -Wl,-Bstatic,-lstdc++,-Bdynamic -lm -L/home/super/Downloads/crosstool-ng-1.20.0/.build/arm-linux-gnueabi/buildtools/lib -lpwl' --enable-threads=posix --enable-target-optspace --disable-nls --disable-multilib --with-local-prefix=/home/super/x-tools/arm-linux-gnueabi/arm-linux-gnueabi/sysroot --enable-c99 --enable-long-long
Thread model: posix
gcc version 4.6.4 (crosstool-NG 1.20.0)

Still when I run tiger application it complains:

eglGetDisplay fail.
InitEGL fail!

And when I run :

/opt/viv_samples/cl11/UnitTest/test_vivante/initializers
ERROR: clGetPlatformIDs failed! ((unknown) from main.cpp:270)

My Linux version is :

Linux buildroot 3.14.58-yocto+g8aaaded #1 SMP PREEMPT Sun Mar 20 13:22:41 CET 2016 armv7l GNU/Linux

And Buildroot used:

imx-gpu-viv-5.0.11.p7.1-sfp

as graphic libraries for making rootfs.

What's wrong?

Regards,

Ali

Re: IMX6 Dual GPU problem

igorpadykov — Wed, 06 Apr 2016 14:14:38 GMT

Hi Ali

I am not aware of L3.14.58 for i.MX, suggest to try:

Board Support Packages (29)

L3.14.52_1.1.0_MX6QDLSOLO (REV L3.14.52_1.1.0)

http://www.nxp.com/products/microcontrollers-and-processors/arm-processors/i.mx-applications-processors-based-on-arm-cores/i.mx-6-processors/i.mx6qp/sabre-board-for-smart-devices-reference-design-based-on-the-i.mx-6-series:RDIMX6SABREBRD?fpsp=1&tab=Design_Tools_Tab

~igor

Re: IMX6 Dual GPU problem

ali_sarlak — Sun, 10 Apr 2016 04:28:18 GMT

Finally the problem went away it was because of lack of suitable galcore driver in :

linux-fslc-3.14-1.0.x-mx6-tinyrex-1.2.zip

I unchecked the "MXC Vivante GPU support" in kernel configuration then download the :

https://github.com/Freescale/kernel-module-imx-gpu-viv/archive/eeeb23c0fb1cee01318088d417025263479c44ac/kernel-module-imx-gpu-viv-eeeb23c0fb1cee01318088d417025263479c44ac.tar.gz

Compile it and then insmod the galcore module.

So the problems:

eglGetDisplay fail.

InitEgl fail!

solved.

Regards,

Ali