Difference between revisions of "iMX8M Industrial Yocto Image Building"
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<div style="float:right">__TOC__</div> | <div style="float:right">__TOC__</div> | ||
− | This Wiki page guides through the process of downloading the Yocto Project source files for release 3.1 (dunfell), their synchronization and | + | This Wiki page guides through the process of downloading the Yocto Project source files for release 3.1 (dunfell), their synchronization and images building for the iMX8M Industrial Development Kit. |
Before images can be built, [[iMX8M Industrial Yocto Prerequisites|necessary steps need to be performed]] to setup the host machine. | Before images can be built, [[iMX8M Industrial Yocto Prerequisites|necessary steps need to be performed]] to setup the host machine. | ||
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== Flashing the binaries == | == Flashing the binaries == | ||
− | At this point everything was prepared to flash the binaries. Follow the [[iMX8M Industrial Flashing Procedure|flashing procedure]] instructions to start the development kit with the compiled | + | At this point everything was prepared to flash the binaries. Follow the [[iMX8M Industrial Flashing Procedure|flashing procedure]] instructions to start the development kit with the compiled images. |
Revision as of 01:59, 9 December 2023
This Wiki page guides through the process of downloading the Yocto Project source files for release 3.1 (dunfell), their synchronization and images building for the iMX8M Industrial Development Kit.
Before images can be built, necessary steps need to be performed to setup the host machine.
All the source files for this customized Yocto Project, together with the recent changes made, can be inspected and downloaded at the Voipac GitHub repository.
Cloning the project
Create a new directory for the project environment:
mkdir ~/voipac-yocto cd ~/voipac-yocto
Clone the iMX8M Industrial Yocto Project into the host machine:
git clone https://github.com/voipac/yocto-imx8m-voipac.git
Building the image
Voipac provides quick and simple-to-use option how to build an image by using prepared script:
#!/bin/bash set -e # Copy manifests helper function copy_manifests() { rm -rf .repo mkdir -p .repo/manifests cp scripts/voipac.xml .repo/manifests/ } # Fetch the latest meta layers if ! diff -q .repo/manifests/voipac.xml scripts/voipac.xml >/dev/null 2>&1; then copy_manifests repo init -u "$(pwd)"/.repo/repo -b default -m voipac.xml fi repo sync --optimized-fetch MACHINE=imx8mq-voipac DISTRO=fslc-xwayland source ./setup-environment build-voipac bitbake -f voipac-image
This script automatically updates the latest meta layers. These layers include manifest files describing where all the sources are located. Afterwards all the directories are synchronized.
The second to last command defines the machine for which the last command bitbake compiles and builds output binaries. Besides describing the specifics for iMX8M Industrial Development Kit, DISTRO provides several building options selecting graphical interface:
- fsl-imx-wayland: Wayland/Weston graphics
- fsl-imx-xwayland: Wayland graphics and X11
- fsl-imx-fb: framebuffer graphics (no Wayland or X11)
The script can be run to fetch and build the Yocto images by simply calling its filename:
./build_image.sh
Note: Make sure that the synchronization finished without errors showcasing that with the following massage:
repo sync has finished successfully.
Note: The first successful build can take several hours (depending on multiple factors affecting the host machine like CPU, internet bandwidth, allocated disk space, etc.).
Locating output files
After the compiling process was completed, the freshly built output files are located in the directory:
cd ~/voipac-yocto/yocto-imx8m-voipac/build-voipac/tmp/deploy/images
The files to flash into the development kit are located in this directory. To make them more accessible, the files can be copied and unpacked:
cp -prv imx-boot ~/ cp -prv voipac-image-imx8mq-voipac-20230512212054.rootfs.wic.gz ~/voipac-image-imx8mq-voipac.wic.gz gzip -d ~/voipac-image-imx8mq-voipac.wic.gz
Note: The number string in the filename differs between every build as it displayes the timestamp of the compilation.
Flashing the binaries
At this point everything was prepared to flash the binaries. Follow the flashing procedure instructions to start the development kit with the compiled images.