Updated June 3rd.
Here are the instructions for building your own Open Embedded based aarch64 image which is able to run an xfce based graphical environment. Consider this a draft that will evolve as there are some hacking bits and some steps that over time I want to make disappear.
- Obtain a hwpack by loading it from http://snapshots.linaro.org/openembedded/hwpacks/vexpress64/latest
- Get the OpenEmbedded source
mkdir openembedded
cd openembedded
git clone git://git.linaro.org/openembedded/jenkins-setup.git
cd jenkins-setup
sudo bash pre-build-root-install-dependencies.sh
edit init-and-build.sh and delete the very last line which is a call to bitbake. bitbake starts a build, we want to delay that for a bit.
./init-and-build.sh
- pull from my xfce brance
cd meta-linaro
git remote add linaro git://git.linaro.org/people/tomgall/oe/meta-linaro.git
git fetch linaro
git checkout -b xfce linaro/xfce
cd ../meta-openembedded
git remote add linaro git://git.linaro.org/people/tomgall/oe/meta-openembedded.git
git fetch linaro
git checkout -b aarch64 linaro/aarch64
cd ../openembedded-core
git remote add linaro git://git.linaro.org/people/tomgall/oe/openembedded-core.git
git fetch linaro
git checkout -b aarch64 linaro/aarch64
cd ..
- Next we need to expand the set of recipes the build will use.
cd build
edit conf/bblayers.conf and add
BBLAYERS += ‘/your-full-path/jenkins-setup/meta-linaro/meta-browser’
BBLAYERS += ‘/your-full-path/jenkins-setup/meta-openembedded/meta-xfce’
BBLAYERS += ‘/your-full-path/jenkins-setup/meta-openembedded/meta-gnome’
- Now it’s time to build
cd openembedded-core
. oe-init-build-env ../build
cd ../build
bitbake linaro-image-xfce
- The output of the build is in the build directory in tmp-eglibc/deploy/images
- Package the resulting rootfs into an img. using linaro-media-create. This implies you have a current copy from bzr of linaro-image-tools (bzr clone lp:linaro-image-tools. Also you need the hwpack from the first step.
~/bzr/linaro-image-tools/linaro-media-create –dev fastmodel
–image_size 2000M –output-directory gfx –binary
linaro-image-xfce-genericarmv8-20130524144429.rootfs.tar.gz –hwpack
../linux-gfx-model/hwpack_linaro-vexpress64-rtsm_20130521-337_arm64_supported.tar.gz
We’ll do some work to smooth this out and get rid of this step and use the OE built kernel.
- Boot the rtsm model
I use a script for running with either the Foundation model or the RTSM model. Note I keep the Foundation model and the RTSM models inside of ~/aarch64.
————————————————————————————
#!/bin/bash
model=foundation
kernel=
rootfs=
if [ ! -z $3 ]; then
model=$3
fi
if [ -z $1 ]; then
echo “Usage: aarch64-sim KERNEL ROOTFS foundation|rtsm”
else
kernel=`realpath $1`
fi
if [ ! -z $2 ]; then
rootfs=`realpath $2`
fi
case $model in
foundation)
if [ ! -z $rootfs ];then
rootfs=” –block-device $rootfs”
fi
# sudo ip tuntap add tap0 mode tap
# sudo ifconfig tap0 192.168.168.1
~/aarch64/Foundation/Foundation_v8pkg/Foundation_v8 –image $kernel –network nat $rootfs
;;
rtsm)
if [ ! -z $rootfs ];then
rootfs=” -C motherboard.mmc.p_mmc_file=$rootfs ”
fi
~/aarch64/RTSM_AEMv8_VE/bin/model_shell64 \
-a $kernel \
$rootfs \
~/aarch64/RTSM_AEMv8_VE/./models/Linux64_GCC-4.1/RTSM_VE_AEMv8A.so
;;
esac
———————————————————————————————
I put this in aarch64-sim.sh. (Don’t forget to chmod +x)
aarch64-sim.sh gfx/img.axf gfx/sd.img rtsm
- After the linux system has booted you need the run the following by hand.
fc-cache -f -v
pango-querymodules > /etc/pango/pango.modules
- and now finally run:
startxfce4
That it for now!
Tom Gall 