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December 8, 2017 by Jean-Luc Aufranc (CNXSoft) - No Comments

Gumstix AutoBSP Automatically Generates Device Tree Files for Hardware Designed with Geppetto

Gumstix launched Geppetto Design-To-Order (D2O) system back in 2013, and at the time you could design complete baseboard for their Overo CoMs right in your Chrome or Firefox web browser, and once complete, order the board from the website. The system is meant to save you time, and “design” here does not mean drawing schematics, and laying out PCBs, but instead selecting board size, and adding ports as needed. Since then, the company has added support for more modules, and you can now easily build you own baseboard for Raspberry Pi Compute Module, Technexion PICO-IMX6 module, Toradex Colibri SoM, 96Boards Mezzanine, and they even have Beaglebone Black and 96Board CE or IoT connectors, among others. Support for Qualcomm DragonBoard 410c, Atmel (Arduino) , and STMicro platforms is also being worked on. Their latest feature – AutoBSP – automatically generates device tree files for your custom boards, so you can simply […]

September 4, 2017 by Jean-Luc Aufranc (CNXSoft) - 6 Comments

Linux 4.13 Release – Main Changes, ARM & MIPS Architectures

Linus Torvalds has just announced the release of Linux 4.13 and a kidney stone…: So last week was actually somewhat eventful, but not enough to push me to delay 4.13. Most of the changes since rc7 are actually networking fixes, the bulk of them to various drivers. With apologies to the authors of said patches, they don’t look all that interesting (which is definitely exactly what you want just before a release). Details in the appended shortlog. Note that the shortlog below is obviously only since rc7 – the _full_4.13 log is much too big to post and nobody sane would read it. So if you’re interested in all the rest of it, get the git tree and limit the logs to the files you are interested in if you crave details. No, the excitement was largely in the mmu notification layer, where we had a fairly last-minute regression and […]

July 11, 2017July 11, 2018 by Jean-Luc Aufranc (CNXSoft) - 8 Comments

NetBSD is Now Running on Allwinner H3 Boards

Most people will run Linux kernel on development boards because it does the job, and that’s usually the only option. But others have been working on NetBSD kernel for Allwinner H3 boards, and it’s now running on various H3 boards with serial console, USB, Ethernet, SD card, and eMMC flash working. Jared McNeill explains they first had to deal with low-level code to initialize the CPU and MMU, before using a U-boot layer to disguise NetBSD as the Linux kernel in order to load kernel and device tree file. The code then jumps to the generic ARM FDT implementation of initarm to relocate DTB data and perform other steps, and finally they can enumerated devices. This is explained in greater details in the aforelinked blog post on NetBSD website. Jared tested the implementation on NanoPi NEO and Orange Pi Plus 2E, but others have reported success on various hardware based […]

March 14, 2017March 18, 2017 by Jean-Luc Aufranc (CNXSoft) - 20 Comments

Android 7.1 Nougat on Amlogic TV Boxes – A First Quick Look

Last year, we found out that Amlogic was working on Linux 4.4, possibly for their Android 7.0 Nougat SDK. As a developer who signed all relevant NDAs, Stane1983 has now been working on Amlogic Android 7.0 for a few day, and reported some of his findings. First Amlogic source code is based on Android 7.1.1 R6 (NMF26Q), but still with Linux 3.14.29, possibly because Mali-T830 GPU drivers are still r11p0, and Linux 4.4 may come later. One good thing is that the Nougat SDK supports 64-bit Android OS instead of the 32-bit Android we are all currently using in our TV boxes. A not-so-good news is that internal storage partitions have changed, which means most current TV boxes are unlikely to get an update, becau it may not be possible to perform OTA updated, and instead would require an updated via Amlogic USB burning tool. But let’s look at the […]

February 20, 2017May 29, 2017 by Jean-Luc Aufranc (CNXSoft) - 3 Comments

Linux 4.10 Release – Main Changes, ARM & MIPS Architectures

Linus Torvalds has just released Linux 4.10: So there it is, the final 4.10 release. It’s been quiet since rc8, but we did end up fixing several small issues, so the extra week was all good. On the whole, 4.10 didn’t end up as small as it initially looked. After the huge release that was 4.9, I expected things to be pretty quiet, but it ended up very much a fairly average release by modern kernel standards. So we have about 13,000 commits (not counting merges – that would be another 1200+ commits if you count those). The work is all over, obviously – the shortlog below is just the changes in the last week, since rc8. Go out and verify that it’s all good, and I’ll obviously start pulling stuff for 4.11 on Monday. Linus Linux 4.9 added Greybus staging support, improved security thanks to virtually mapped kernel stacks, […]

August 2, 2016 by Jean-Luc Aufranc (CNXSoft) - 4 Comments

Embedded Linux Conference & IoT Summit Europe 2016 Schedule

Embedded Linux Conference & IoT summit 2016 first took place in the US in April, but the events are now also scheduled in Europe on October 11 – 13 in Berlin, Germany, and the schedule has now been published. Even if you are no going to attend, it’s always interesting to find out more about the topic covered in that type of events, so I had a look, and created my own virtual schedule with some of the sessions. Tuesday, October 11 10:40 – 11:30 – JerryScript: An Ultra-lightweight JavaScript Engine for the Internet of Things – Tilmann Scheller, Samsung Electronics JerryScript is a lightweight JavaScript engine designed to bring the success of JavaScript to small IoT devices like lamps, thermometers, switches and sensors. This class of devices tends to use resource-constrained microcontrollers which are too small to fit a large JavaScript engine like V8 or JavaScriptCore. JerryScript is heavily […]

May 16, 2016May 29, 2017 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

Linux 4.6 Release – Main Changes, ARM and MIPS Architectures

Linus Torvalds released Linux Kernel 4.6 earlier today: It’s just as well I didn’t cut the rc cycle short, since the last week ended up getting a few more fixes than expected, but nothing in there feels all that odd or out of line. So 4.6 is out there at the normal schedule, and that obviously also means that I’ll start doing merge window pull requests for 4.7 starting tomorrow. Since rc7, there’s been small noise all over, with driver fixes being the bulk of it, but there is minor noise all over (perf tooling, networking, filesystems, documentation, some small arch fixes..) The appended shortlog will give you a feel for what’s been going on during the last week. The 4.6 kernel on the whole was a fairly big release – more commits than we’ve had in a while. But it all felt fairly calm despite that. Linux 4.5 added […]

March 4, 2016May 29, 2017 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

Embedded Linux Conference 2016 and OpenIoT Summit 2016 Schedule

The Embedded Linux Conference 2016 and the OpenIoT summit 2016 will take place on April 4 – 6, 2016 in San Diego, California, and over 800 attended will meet including kernel & system developers, userspace developers, and product vendors. The Linux Foundation has recently published the schedule, so I’ve had a look at some of the talks, and designed my own virtual schedule to find out more the current development focus although I won’t attend. Monday April 4 10:40am – 11:30am – Linux Connectivity for IoT by Marcel Holtmann, Intel OTC There are many connectivity solutions that available for IoT. For example Bluetooth Low Energy, 802.15.4, Zigbee, OIC, Thread and others. This presentation will provide and overview of the existing technology and upcoming standard and how they tie into the Linux kernel and its ecosystem. 11:40 – 12:30 – BoF: kernelci.org: A Million Kernel Boots and Counting by Kevin Hilman, […]