Blog - Linaro

Linaro Engineering Highlights - December 2020 image

Jon Burcham

Linaro Engineering Highlights - December 2020

Friday, January 8, 2021

This edition of the monthly Engineering Highlights is feature packed with several updates, together with a roundup on the year of some of the key projects.

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Protected UEFI Variables With U-Boot image

Ilias Apalodimas

Protected UEFI Variables With U-Boot

Monday, January 4, 2021

7 mins read

Critical system variables, like the UEFI ones, must be protected against a variety of attacks. On Arm servers and desktops, which typically run EDK2, dedicated flashes are used. Those would...

Arm Bootloaders Security U-Boot UEFI

History Of The Interconnect Framework image

Georgi Djakov

History Of The Interconnect Framework

Tuesday, December 22, 2020

7 mins read

The Interconnect API is a framework for configuring the on-chip interconnects in the system. The framework tunes the system for the best power and performance while taking into account the...

BUS scaling Power & Performance

A Year In The Life Of The STG Group image

Ryan Arnold

A Year In The Life Of The STG Group

Tuesday, December 22, 2020

13 mins read

In this article we look at the work from just one of Linaro's many engineering teams - System Technologies Group (STG). This group have been very busy as usual, introducing...

STG Tuxsuite

Linaro Engineering Highlights - November 2020 image

Jon Burcham

Linaro Engineering Highlights - November 2020

Monday, December 14, 2020

9 mins read

The November highlights are full of the latest updates and news from Linaro. Topics include; LITE updates, MCUboot & a new Linaro Community Project, Security and Zephyr updates. Plus, future...

Device Tree Engineering Highlights Kernel Working Group Ledge Lite

32-bit Linux: Bright Future Or End Of Life? image

Arnd Bergmann

32-bit Linux: Bright Future Or End Of Life?

Monday, December 7, 2020

1 min read

The news for processors and system-on-chip (SoC) products these days is all about 64-bit cores powering the latest computers and smartphones. Yet, will 32-bit continue to be the best choice...

Linux

Add support to retrieve correct TA load address with ASLR enabled image

Paolo Valente

Add support to retrieve correct TA load address with ASLR enabled

Thursday, November 26, 2020

1 min read

Recently two interns enabled debugging in Open Portable Trusted Execution Environment (OPTEE) using GDB. This blog details their contributions and achievements which is now available for the open source community....

OP-TEE

David Brown

Security and the Zephyr Project

Thursday, November 26, 2020

5 mins read

David Brown is currently the Security Architect for the Zephyr Project. In May of 2020, the project received a report from the NCC group outlining several dozen vulnerabilities found in...

Lite Security Zephyr

John Stultz

DMA BUF Heap Transition in AOSP

Tuesday, November 17, 2020

9 mins read

The ION framework was one of the early components of the Android patchset. It provided a way for userspace to allocate memory buffers that would be efficiently shared between multiple...

AOSP DMA BUF Heaps ION

Linaro Engineering Highlights - October 2020 image

Jon Burcham

Linaro Engineering Highlights - October 2020

Friday, November 13, 2020

17 mins read

October's Engineering highlights include an overview of the new Arm Devsummit, Linaro's contributions for the Linux Kernel 5.9. Plus an overview of recent blogs including 'Accelerating libcamera Qcam format conversion...

Engineering highlights Linaro Linux

Daniel Lezcano

Linaro and the Linux Kernel

Monday, November 9, 2020

12 mins read

A contribution to the Linux kernel requires experience and over 10 years ago, Linaro took the lead as a consortium to consolidate the Linux kernel. In this article we look...

Kernel Linaro Linux

Accelerating libcamera Qcam format conversion using OpenGL shaders image

Show Liu

Accelerating libcamera Qcam format conversion using OpenGL shaders

Friday, November 6, 2020

8 mins read

Libcamera is an open source friendly camera stack and userspace library. It provides an intuitive API and methods to control the complexity of camera hardware for multiple platforms. As libcamera...

RockPi4B Rockchip RK3399 libcamera

Joakim Bech

Device Tree - Future Improvements

Friday, October 23, 2020

12 mins read

Over the years there have been countless discussions around Device Tree. It is not a problem that has gone unnoticed. Still the impression seems to be that little is actually...

Arm Ecosystem Device Tree Linaro Linux Kernel

Linaro Engineering Highlights - September 2020 image

Jon Burcham

Linaro Engineering Highlights - September 2020

Monday, October 12, 2020

17 mins read

September's Engineering Highlights include a brief summary of our recent Virtual Connect 2020 (LVC20) event. There is also a synopsis of the Android Micro Conference at Linux Plumbers. Our blog...

Android Arm Arm64 CPU Connect Engineering Highlights HPC Linaro Linux Kernel Open Source

Jon Burcham

LVC20 Wrap Up

Wednesday, October 7, 2020

17 mins read

Our latest Connect meeting in September was not quite what we had in mind at the beginning of the year. Yet, in these unusual times we have been able to...

Open On-Chip Debugger (OpenOCD) at Linaro image

Omair Javaid

Open On-Chip Debugger (OpenOCD) at Linaro

Wednesday, September 30, 2020

1 min read

Linaro has been actively involved in the OpenOCD project since 2016. In this article Omair Javaid takes a closer look at the software development tool.

Arm Linaro Toolchain

Enabling UEFI Secure Boot on U-Boot image

Takahiro Akashi

Enabling UEFI Secure Boot on U-Boot

Monday, September 28, 2020

12 mins read

UEFI Secure Boot is a new feature introduced in the latest U-Boot release, v2020.10. Secure Boot is a security framework in boot sequence which is designed to protect the system...

Arm Linaro Linux Qemu UEFI

Force Idle When a CPU Is Overheating image

Daniel Lezcano

Force Idle When a CPU Is Overheating

Friday, September 18, 2020

13 mins read

Some intensive tasks can necesitate the Linux kernel to cope with high temperatures. On embedded systems, passive cooling is mandatory to provide a way to cool down the CPUs if...

Arm Arm64 CPU Embedded Linaro Linux Kernel PELT

Linaro Engineering Highlights for August 2020 image

Jon Burcham

Linaro Engineering Highlights for August 2020

Monday, September 14, 2020

10 mins read

This blog covers the many developments the teams at Linaro have been working on during August including the initial TVM AI compiler performance numbers on ARM64, using energy model to...

AI Arm Arm Ecosystem Arm64 Kernel LKFT Linaro Linux

Linus Walleij

BFQ saved me from thrashing

Wednesday, September 2, 2020

2 mins read

In this article Linus Walleij looks at what causes thrashing and developments that help to mitigate this problem.

Linaro Linux OOM Thrashing

Linaro Engineering Highlights - July 2020 image

Jon Burcham

Linaro Engineering Highlights - July 2020

Monday, August 17, 2020

5 mins read

The July 2020 Engineering Highlights feature the introduction of TuxMake, articles on a new certification for the Linaro Developer Cloud and the evolution of QEMU.

Cloud Kubernetes Connect Engineering Highlights Kernel Validation Team LDCG Linaro Linaro Developer Cloud Linux Linux Kernel Functional Test Qemu

Thermal Notifications With Netlink image

Daniel Lezcano

Thermal Notifications With Netlink

Thursday, July 30, 2020

8 mins read

This blog introduces the thermal framework design and shows where the notification takes place to allow the userspace to be aware of the overall thermal profile of the system. In...

Netlink Thermal Framework Thermal Notifications Thermal Zone