BeagleBoneBlack/SGX + Qt EGLFS + Weston

= Introduction = The SoC of BeagleBone Black is an AM335x by Texas Instruments. The graphic accelerator by Imagination Technologies is PowerVR chipset, the serie 5 (SGX530). I don't have a very good english, thanks to the people who will be able to correct me ;-)

= Sources =

BeagleBoard

 * The lastest Official Firmware for the BBB
 * The community of BBB
 * Git repo (Github)

Texas Instruments

 * The last Porcessor SDK for AM335x
 * SGX Debug Info page
 * Linux SDK Graphics and Display
 * The community of Texas Instruments
 * Git repo (Gitorious)

Imagination Technologies

 * Downloads page for PowerVR Tools and SDK
 * Git repo (Github)

= Conditions =
 * 1) We must have "-ti-" on the BBB kernel. Type   to verify your kernel version
 * 2) We connect a screen to the BBB with a micro HDMI to HDMI cable
 * 3) We need an ethernet cable to connect the beaglebone to the internet
 * 4) A lot of place if you want install demos and Weston without Cross Compilation
 * 5) All orders will be in "root" mode here . Sorry if it's not secure ^^
 * 6) All packages are up to date.

Download patches
During the differents steps, we will need of patches created by Texas Instruments To get it on BBB: cd /opt/ wget http://remi.avignon.me/bbb/BBB-Patches.zip unzip BBB-Patches.zip rm BBB-Patches.zip

The images tested
For my tests I use two images : you can download the last image of BBB here
 * Debian 9.3 2018-01-28 4GB SD IoT (kernel: 4.9.78-ti-r94)
 * Debian 9.5 2018-10-07 4GB SD LXQT (kernel: 4.14.71-ti-r80)

= Install PowerVR Modules =

The OLD Version
''' WARNING: It's not a good solution and I didn't test it. ''' The older version may run on versions lower or equal than 4.4.68-bone17. The old version use the FBDEV. So you need a lts/bone kernel to download : cd /opt/scripts/tools/ git pull ./update_kernel.sh --kernel 4.4.`your version here`-bone17 reboot apt-get install ti-sgx-es8-modules-`uname -r` depmod -a

Build SGX userspace for 4.4.x (must be done on an x86, due to the TI 5.01.01.02 blob extractor) git clone https://github.com/RobertCNelson/bb-kernel.git cd bb-kernel/ git checkout origin/am33x-v4.4 -b tmp-sgx ./sgx_create_package.sh

Copy ./deploy/GFX_5.01.01.02_es8.x.tar.gz to BeagleBone/BeagleBone Black and install tar xfv GFX_5.01.01.02_es8.x.tar.gz -C / cd /opt/gfxinstall/ apt-get install lsb-release insserv ./sgx-install.sh reboot

Verify omaplfb & pvrsrvkm loaded debian@arm:~$ lsmod | grep omaplfb omaplfb               12065  0 pvrsrvkm             178782  1 omaplfb

But when I test with lastest 4.4-bone kernel, the omapfbl module was not loaded

Check access of SGX drivers
ls /sys/devices/platform/ocp/56000000.sgx driver driver_override  drm  modalias  of_node  power  subsystem  uevent If you are on 4.9.X-ti- kernel, you don't have access to the SGX drivers, update your dtb files for solve this problem: cd /opt/source/dtb-4.9-ti/ git pull make install reboot The  command patch the dtb files to apply this patch. And retry the command to verify the access of SGX drivers, it's very important else you can't continue this tutorial...

Install modules
apt-get install ti-sgx-ti335x-modules-`uname -r` depmod -a reboot

Verify module loaded
lsmod |grep pvr pvrsrvkm             442368  0

= The GBM Library =

Introduction
The GBM library is patched by Texas Instruments for use the PowerVR module. The library on  is not a good library for use the graphic accelerator.

Add news directories of libs
Edit  file, and add   and   after the first line. cat /etc/ld.so.conf.d/arm-linux-gnueabihf.conf /lib/arm-linux-gnueabihf /usr/lib /usr/local/lib /usr/lib/arm-linux-gnueabihf After your file saved, type  to reload the new directories of libraries.
 * 1) Multiarch support

Download/Install library
cd /opt/ git clone git://git.ti.com/glsdk/libgbm.git -b next cd libgbm/ git apply ../patches/gbm/0001-Hack-gbm.pc.in-add-ldl-at-Libs-to-pass-the-QT5-confi.patch ./autogen.sh make install cd /opt/ rm -r libgbm ln -s /usr/local/lib/libgbm.so.2.0.0 /usr/local/lib/libgbm.so.2

How get the GOOD library
''Note: If you want just use the graphic accelerator, this part is not important. I explain how I sought to get the patches from Texas Instruments. You can go to the next step if you want. '' I created a SD with am335x-evm-linux-XX.XX.XX.XX.img image and the graphic accelerator work fine on the BeagleBone Black. So I download the last SDK of AM335X from this page. Must be done on an x86 because this repo is very big, I use 05.02.00.10 PSDK for this example: $ cd /opt/ $ git clone git://arago-project.org/git/projects/oe-layersetup.git tisdk $ cd tisdk $ ./oe-layertool-setup.sh -f configs/processor-sdk/processor-sdk-05.02.00.10-config.txt $ find /opt/tisdk/sources -iname "*libgbm*" /opt/tisdk/sources/meta-ti/recipes-graphics/gbm/libgbm_10.0.0.bb /opt/tisdk/sources/meta-processor-sdk/recipes-graphics/gbm/libgbm_10.0.0.bbappend /opt/tisdk/sources/meta-processor-sdk/recipes-graphics/gbm/libgbm $cat /opt/tisdk/sources/meta-ti/recipes-graphics/gbm/libgbm_10.0.0.bb BRANCH = "next" SRC_URI = "git://git.ti.com/glsdk/libgbm.git;protocol=git;branch=${BRANCH}" $ls /opt/tisdk/sources/meta-processor-sdk/recipes-graphics/gbm/libgbm 0001-Hack-gbm.pc.in-add-ldl-at-Libs-to-pass-the-QT5-confi.patch I have the git source with the branch and I know there is only one patch !

= The Graphic SDK =

Download/Install SGX SDK
cd /opt/ git clone -b ti-img-sgx/1.14.3699939 git://git.ti.com/graphics/omap5-sgx-ddk-um-linux.git cd omap5-sgx-ddk-um-linux/ export DISCIMAGE=/ export TARGET_PRODUCT=ti335x make install cd /usr/lib/ ln -s libGLESv2.so.1.14.3699939 libGLESv2.so.1 mkdir /usr/local/lib/gbm/ cd /usr/local/lib/gbm/ ln -s ../../../lib/libpvrGBMWSEGL.so.1.14.3699939 gbm_pvr.so rm -r /opt/omap5-sgx-ddk-um-linux

File powervr.ini
As explained on the texas instruments wiki, the configuration of the /etc/powervr.ini file is important. I advise you to configure your file as mine: cat /etc/powervr.ini [default] WindowSystem=libpvrDRMWSEGL.so DefaultPixelFormat=RGB565

= Start PowerVR Controller = It is very important that at each start the module  be loaded The access to the SGX drivers which is found at this location And that launches the program, recovered from the graphic SDK of Texas Instruments. There is a script on your /etc/init.d/ folder, to load modules and start the pvr controller, execute this command: /etc/init.d/rc.pvr start Loaded PowerVR consumer services. Whenever the BBB starts, this script need to start. Use insserv or update.rc to execute on each boot.

If you have this error: /etc/init.d/rc.pvr start PVR:(Error): OpenServices: PVRDRMOpenRender failed [0, ] PVR:(Error): PVRSRVInitSrvConnect: PVRSRVConnect failed [0, ] PVR:(Error): SrvInit: PVRSRVInitSrvConnect failed (4) [0, ] /usr/bin/pvrsrvctl: SrvInit failed (already initialized?) (err=PVRSRV_ERROR_INIT_FAILURE)


 * 1) Verify you have access to SGX drivers:
 * 2) Verify you boot log with   command
 * 3) Verify that the powerVR module is loaded
 * 4) If all is ok, please halt your board, Remove the power and put it again to boot

Dmesg analyse dmesg |grep -i pvr [  51.554766] pvrsrvkm: loading out-of-tree module taints kernel. ==> Module PowerVR loaded [  51.778874] [drm] Initialized pvr 1.14.3699939 20110701 for 56000000.sgx on minor 2 ==> Module PowerVR connected with SGX Drivers [ 122.361997] PVR_K: UM DDK-(3699939) and KM DDK-(3699939) match. [ OK ] ==> PowerVR controller linked with Module and SGX Drivers

= Tests graphic accelerator =

The PVR Tools and Examples
The first step is to use Imagination Technologies tools and examples because they work well and it's easy to use.

Download/Install
cd /opt/ git clone git://git.ti.com/graphics/img-pvr-sdk.git cd img-pvr-sdk export DISCIMAGE=/ export TARGET_PRODUCT=ti335x make install cd /opt/ rm -r img-pvr-sdk

Example
Test with No Window System (NullWS) cd /opt/img-powervr-sdk/Examples/Advanced/NullWS/ ./OGLES2Water It is my favorite! I like it! If you have a problem here, have you a monitor connected on your BBB? Type  to verify your monitor: ls -alh /sys/class/drm/ total 0 drwxr-xr-x 2 root root    0 Mar 18 03:13. drwxr-xr-x 61 root root   0 Mar 17 15:17 .. lrwxrwxrwx 1 root root    0 Mar 17 15:43 card0 -> ../../devices/platform/ocp/4830e000.lcdc/drm/card0 lrwxrwxrwx 1 root root    0 Mar 18 03:13 card0-HDMI-1 -> ../../devices/platform/ocp/4830e000.lcdc/drm/card0/card0-HDMI-1 lrwxrwxrwx 1 root root    0 Mar 18 03:13 card1 -> ../../devices/platform/ocp/56000000.sgx/drm/card1 lrwxrwxrwx 1 root root    0 Mar 18 03:13 controlD64 -> ../../devices/platform/ocp/4830e000.lcdc/drm/controlD64 lrwxrwxrwx 1 root root    0 Mar 18 03:13 renderD128 -> ../../devices/platform/ocp/56000000.sgx/drm/renderD128 -r--r--r-- 1 root root 4.0K Mar 18 03:13 version If you have a problem here, don't continue because it's the easiest way to use hardware acceleration!

PVRPerfServerDeveloper
It's an application to monitoring the graphics resources, cpu and memory on BBB Go to  and execute

PVRTune
Note: You need to execute PVRPerfServerDeveloper on BeagleBone before. Download PVRTune here for your x86 operating system and execute it. On PRVTuneDeveloper: Connect to: 192.168.7.2 (or the IP of BBB) and click on "Go" button's.

PVRTrace
Launch your graphic application The log/s file/s is/are:

KMScube
cd /opt/ git clone git://git.ti.com/glsdk/kmscube.git cd kmscube/ ./autogen.sh make install cd /opt/ rm -r kmscube kmscube If you have a Segmentation fault here, it's because you're not using the right GBM library! More information on GBM Library section. If you have a failed to initialize DRM, it's that your monitor is not detected.

QtQuick + EGLFS
apt-get install libqt5qml5 qml-module-qtquick-controls qt5-default qtdeclarative5-dev qtquickcontrols5-examples cd /usr/lib/arm-linux-gnueabihf/qt5/examples/quickcontrols/extras/dashboard qmake make export QT_QPA_PLATFORM=eglfs export QT_QPA_EGLFS_INTEGRATION=none ./dashboard Do you see a dashboard on your monitor? It's perfect ^^!

= Weston = I downlad the same version of Texas Instruments use on their lastest image for BBB! It's the version 2.0. Because I can apply their patches easily! Before get weston from git repo, we need to install a lot of packages: apt-get install libwayland-egl1-mesa libwayland-egl-backend-dev libwayland-dev libwayland-client0 libxcb-composite0-dev libxcb-xfixes0-dev libxcursor-dev apt-get install libpixman-1-dev libcairo2-dev libx11-xcb-dev libmtdev-dev libinput-dev libxkbcommon-dev wayland-protocols libpam0g-dev pam-devel libcolord-dev libwebp-dev libunwind-dev cd /opt/ git clone https://github.com/wayland-project/weston.git -b 2.0 cd weston git apply --reject --whitespace=fix -v ../patches/wayland/weston/*.patch I Had a problem with the first patch (0001-Add-soc-performance-monitor-utilites.patch). So I edited manually the Makefile with Makefile.rej... ./autogen.sh        Native Backend                  drm-backend.so        setuid Install                  yes Cairo Renderer                 image EGL                            yes libxkbcommon                   yes xcb_xkb                        no        XWayland                        yes dbus                           yes ivi-shell                      yes Build wcap utility             yes Build Fullscreen Shell         yes Enable developer documentation no        weston-launch utility           yes systemd-login support          no        systemd notify support          no        DRM Compositor                  yes X11 Compositor                 yes Wayland Compositor             yes Headless Compositor            yes FBDEV Compositor               yes RDP Compositor                 no        Screen Sharing                  no        JUnit XML output                no        Build Clients                   yes Build EGL Clients              no        Build Simple Clients            yes Build Simple EGL Clients       yes Install Demo Clients           no        Colord Support                  yes LCMS2 Support                  yes libjpeg Support                yes libwebp Support                yes libunwind Support              yes VA H.264 encoding Support      yes After I had a problem when compiling: /usr/bin/ld: ./.libs/libtimebargraph.a(libtimebargraph_la-time_bar_graph.o): undefined reference to symbol 'pthread_join@@GLIBC_2.4' But the reference exist: readelf -s /lib/arm-linux-gnueabihf/libpthread.so.0 | grep pthread_create 135: 00005885 2804 FUNC    GLOBAL DEFAULT   13 pthread_create@@GLIBC_2.4 681: 00005885 2804 FUNC    LOCAL  DEFAULT   13 __pthread_create_2_1 1164: 00005885 2804 FUNC    GLOBAL DEFAULT   13 pthread_create@@GLIBC_2.4 So I added " -lpthread" in Makefile on line started by "LIBS=" (line 1978 for me). it's: "LIBS = -lpthread" for use pthread library and it's good. After type make command, you can go to buy and eat a baguette because it'll take a long time ;-P make install cd /opt/ rm -r weston

Launch weston: weston --tty=4 Normally, we have a desktop on our screen with an old and not very pretty wallpaper ^^

= GStreamer =