TS-4900 - Build Yocto Distribution
Recommended reading
Build Yocto
To get started, install repo. This is a tool for downloading and updating a set of git repositories.
mkdir ~/bin
curl http://commondatastorage.googleapis.com/git-repo-downloads/repo > ~/bin/repo
chmod a+x ~/bin/repo
export PATH=${PATH}:~/bin
Check out our BSP:
mkdir ts-bsp
cd ts-bsp
repo init -u https://github.com/embeddedarm/ts-oe-bsp.git -b daisy
repo sync # This will take a while while it downloads several git repositories
Once it is downloaded the environment needs to bet set up:
export SDKMACHINE="x86_64"
export SDKMACHINE="i686"
export MACHINE='ts4900-quad'
source ./setup-environment build
#Install our BB layers file. This includes a set of common layers used
#in our images.
cp ../.repo/manifests/bblayers.conf conf/bblayers.conf
You will need to select which image to build. You can view the images we provide with:
ls -l sources/meta-ts/recipes-*/images/*
These images may change in the future, or more may be added. There are descriptions in the top comments of each file.
- Build our common image with X11/QT support
bitbake ts-x11-image
- Alternatively, this is a smaller image with X11/QT omitted
- bitbake ts-headless-image
After the build has finished, it will be available in:
cd tmp/deploy/images/ts4900-quad
Use gparted or fdisk+mkfs to format an SD card with a single ext4 partition.
From your pc, mount the SD card. Assuming /dev/sdc
mkdir /mnt/sd
mount /dev/sdc1 /mnt/sd
sudo tar ts-x11-image-ts4900-quad.tar.bz2 -C /mnt/sd
This will install the rootfs, but the kernel, device tree (dtb), and FPGA bitstream must be manually installed.
sudo cp uImage /mnt/sd/boot/
sudo cp uImage-imx6q-ts4900*.dtb /mnt/sd/boot/
sudo rename 's/uImage-imx6q/imx6q/' /mnt/sd/boot/*.dtb
sudo umount /mnt/sd
Updating the distribution
Occasionally we will make updates to Yocto. To pull these down:
export PATH=${PATH}:~/bin
cd ts-bsp
repo sync
source ./setup-environment build
From here, you can bitbake your desired image which will include any updates.