Back in June 2019, we announced the availability of a new training course, Displaying and rendering graphics with Linux. At the time of this announcement, the training materials were not available though.
Since then, Bootlin engineer Paul Kocialkowski has been very busy preparing those training materials, and has successfully delivered the first edition of this course to one of our customers in Spain early September. After taking the time to polish those training materials following this first course, we are now very happy to publish and share this 200+ slides deck, covering a wide range of graphics related topics:
- Image and color representation
- Basic drawing
- Basic and advanced operations
- Hardware aspects overview
- Hardware for display
- Hardware for rendering
- Memory aspects
- Performance aspects
- Software aspects overview
- Kernel components in Linux
- Userspace components with Linux
See also the detailed agenda of this training course. The LaTeX source code for all our training materials, including this graphics training, is available in a Git repository. It is worth mentioning that this training only consists of slides and demos, and does not include practical labs done by the participants, in order to keep the training logistics manageable and the duration reasonably short (2 days).
Here are a few slides showing various aspects of this training course:
By publishing this training materials right after our first course, and under the Creative Commons CC-BY-SA license, Bootlin sticks to its commitment of publishing all its training materials under a free documentation license, to better spread the knowledge in the entire embedded Linux community.
We are available to deliver this Displaying and rendering graphics with Linux course anywhere in the world, at your location. Contact us for more details.
For many years, Bootlin has been offering an Embedded Linux system development training course, which has been delivered world-wide to hundreds of engineers by Bootlin trainers. This course is the most appropriate one for engineers getting started with embedded Linux: it goes through all the software layers of an embedded Linux system, from the toolchain to the application, through the bootloader, Linux kernel and basic user-space. With numerous hands-on labs, attendees get practical experience during this training, and learn how to build their embedded Linux system from the ground-up.
This course has been available for a while in two variants:
- A 5-day variant, which covers all topics, including flash storage and filesystems as well as-real time
- A 4-day variant, which is identical to the 5-day variant, except that flash storage and filesystem and real-time are not covered
Today, we are happy to announce that all the practical labs of our 4-day variant are now done on the recently announced STM32MP157 Discovery board, which uses the STM32MP157 processor from STMicroelectronics. This processor has a number of interesting features for a large number of embedded applications, as we discussed in a previous blog post.
Just like for all our training courses, the training materials for this course are publicly and freely available:
Bootlin trainers are available to deliver this course on-site anywhere in the world. See this page for more details in terms of cost and registration process.
Back in June 2015, we announced the availability of a training course on Buildroot, a popular and easy to use embedded Linux build system. A year later, we updated it to cover Buildroot 2016.05. We are happy to announce a new update: we now cover Buildroot 2017.08.
The most significant updates are:
- Presentation of the Long Term Supported releases of Buildroot, a topic we also presented in a previous blog post
- Appearance of the new top-level
utils/ directory, containing various utilities directly useful for the Buildroot user, such as
- Removal of
$(HOST_DIR)/usr/, as everything has been moved up one level to
$(HOST_DIR), to make the Buildroot SDK/toolchain more conventional
- Document the new organization of the
skeleton package, now split into several packages, to properly support various init systems. A new diagram has been added to clarify this topic.
- List all package infrastructures that are available in Buildroot, since their number is growing!
- Use SPDX license codes for licensing information in packages, which is now mandatory in Buildroot
- Remove the indication that dependencies of host (i.e native) packages are derived from the dependencies of the corresponding package, since it’s no longer the case
- Indicate that the check for hashes has been extended to also allow checking the hash of license files. This allows to detect changes in the license text.
- Update the
BR2_EXTERNAL presentation to cover the fact that multiples
BR2_EXTERNAL trees are supported now.
- Use the new relocatable SDK functionality that appeared in Buildroot 2017.08.
The practical labs have of course been updated to use Buildroot 2017.08, but also Linux 4.13 and U-Boot 2017.07, to remain current with upstream versions. In addition, they have been extended with two additional steps:
- Booting the Buildroot generated system using TFTP and NFS, as an alternative to the SD card we normally use
- Using genimage to generate a complete and ready to flash SD card image
We will be delivering this course to one of our customers in Germany next month, and are of course available to deliver it on-site anywhere in the world if you’re interested! And of course, we continue to publish, for free, all the materials used in this training session: slides and labs.
Continuing our efforts to keep our training materials up-to-date we just refreshed our Yocto project and OpenEmbedded training course to the latest Yocto project release, Krogoth (2.1.1). In addition to adapting our training labs to the Krogoth release, we improved our training materials to cover more aspects and new features.
The most important changes are:
- New chapter about devtool, the new utility from the Yocto project to improve the developers’ workflow to integrate a package into the build system or to make patches to existing packages.
- Improve the distro layers slides to add configuration samples and give advice on how to use these layers.
- Add a part about quilt to easily patch already supported packages.
- Explain in depth how file inclusions are handled by BitBake.
- Improve the description about tasks by adding slides on how to write them in Python.
The updated training materials are available on our training page: agenda (PDF), slides (PDF) and labs (PDF).
Join our Yocto specialist Alexandre Belloni for the first public session of this improved training in Lyon (France) on October 19-21. We are also available to deliver this training worldwide at your site, contact us!
At Bootlin, we owe a lot to the Free Software community, and we’re doing our best to give back as much as we can.
One way of doing that is welcoming community contributors in our public training sessions about embedded Linux, Linux kernel and Android system development organized in France. We’ve done that multiple times in the past, and this allowed us to meet very interesting people (who even had very valuable experience and points of view to share with the other course participants), while of course giving them extra knowledge that they can use for further contributions.
The next session in which we can offer a free seat is about Android system development, and will take place on June 20-23 in Toulouse, France. The session has a value of 1890 EUR (without V.A.T.) and includes lunch and breaks, as well as a free Beaglebone Black board with its 4.3″ LCD touchscreen cape.
This course will teach you how to modify Android to support a new embedded board (assuming that it is already supported by the Linux kernel), and how to build a real system through accessing specific hardware, customizing the filesystem and using debugging techniques.
How to apply?
- You need to be a student or a contributor to a free software project, which doesn’t have to be related to the embedded field, and even if your contributions are modest.
- Write to firstname.lastname@example.org before May. 30 and tell us about your contributions and your interest in the session.
- Thomas Petazzoni and Michael Opdenacker will review all the proposals and will select the candidate who best stands out in terms of past contributions and/or in potential for further ones after taking the course. Bootlin reserves the right not to select any candidate if nobody actually makes a sufficiently interesting application.
- The winner will be notified by June 2, and will have to be ready to travel to Toulouse and stay there the whole 4 days at her/his own expense.
Don’t hesitate to apply to this free seat. In past editions, we didn’t have so many people applying, and therefore you have a real chance to get selected!