Archives For raspberry pi

Qt5 for FreeBSD/Pi

January 14, 2015 — 1 Comment

Build SD card image using crochet-freebsd with option VideoCore enabled. Mount either SD card itself of image to build host

mount /dev/mmcsd0s2a /pi

Checkout Qt5 sources and patch them

cd /src
git clone git:// qt5
cd qt5
git checkout 5.4.0
./init-repository --module-subset=$MODULES

fetch -q -o - | patch -p1

Configure, build and install Qt5 to SD card

./configure -platform unsupported/freebsd-clang -no-openssl -opengl es2 -device freebsd-rasp-pi-clang -device-option CROSS_COMPILE=/usr/armv6-freebsd/usr/bin/ -sysroot /pi/ -no-gcc-sysroot -opensource -confirm-license -optimized-qmake -release -prefix /usr/local/Qt5 -no-pch -nomake tests -nomake examples -plugin-sql-sqlite

gmake -j `sysctl -n hw.ncpu`
sudo gmake install

You need BSD-specific plugins to enable mouse and keyboard input in EGLFS mode

cd /src/
git clone
cd qt5-bsd-input
sudo gmake install

Build application you’d like run and install it. I use one of the examples here

cd /src/qt5/qtbase/examples/opengl/cube
sudo gmake install

Unmount SD card, boot Pi, make sure vchiq is loaded

root@raspberry-pi:~ # kldload

Start application

root@raspberry-pi:~ # /usr/local/Qt5/examples/opengl/cube/cube -plugin bsdkeyboard -plugin bsdsysmouse

If you see something like this:

EGL Error : Could not create the egl surface: error = 0x3003

Or this:

QOpenGLFramebufferObject: Framebuffer incomplete attachment.

It means you need to increase GPU memory by setting gpu_mem in config.txt. Amount depends on framebuffer resolution. 128Mb works for me on 1920×1080 display.

bsdsysmouse plugin uses /dev/sysmouse by default, so you either should have moused running or specify actual mouse device, e.g.:

root@raspberry-pi:~ # cube -plugin bsdkeyboard -plugin bsdsysmouse:/dev/ums0

bsdkeyboard uses STDIN as input device, so if you’re trying to start app from serial console it should be something like this:

root@raspberry-pi:~ # cube -plugin bsdkeyboard -plugin bsdsysmouse < /dev/ttyv0

Update: support for keyboard/mouse has been added

After New Year I got back to hacking the VCHIQ stuff (thanks to adrian@ for prodding). Since last time I touched NetBSD folks got it merged to main tree, syncing with latest upstream code and fixing some stupid bugs in my codebase. So I partially merged things back, spent some time on fixing more bugs introduced by yours truly, merged userland bits from latest Broadcom’s bits (and fixing some bugs introduced by them). And as a result VCHIQ got stable enough to run ioquake3d on raspberry pi. Well, you can’t play it because there is no sound and no mouse support and keyboard support is severely crippled but you can navigate menus and watch demoes.

Here is short summary of how to get it running:

  • Get latest HEAD that includes r276794
  • Get latest crochet-freebsd
  • Create configuration file for RasspberryPi, make sure that it’s configured for 2Gb SD card and has VideoCore enabled. i.e. it contains:
    option ImageSize 1950mb # for 2 Gigabyte card
    option VideoCore
  • Build RPi image and flash to SD card
  • mount FreeBSD partition, e.g. mount /dev/mmcsd0s2a /mnt
  • Copy Quake3 PAK files to /baseq3 directory on SD card
  • Download and copy *.so files to /baseq3 and ioqake3.arm to /usr/bin on SD card
  • Unmount FreeBSD partition and mount boot partiotion, e.g. mount_msdosfs /dev/mmcsd0s1 /mnt
  • Edit config.txt and change gpu_mem value to 64
  • Unmount SD card and boot it on your Pi
  • Load vchiq module: kldload vchiq
  • Start Quake3: ioqake3.arm +set s_initsound 0

Keyboard support is really broken. TAB and ENTER works, so you can navigate menus. But that’s pretty much it.

ioquake3 codebase with my minor changes located here:
I provide pre-compiled binaries because for some reason ioquake3 built with xdev tools crash in qsort (libc incompatibilities?) so I use make buildenv to build it.

And here is photo of demo in action (there are RaspberryPi and ZedBoard on it too, yay!)
Photo Jan 07