Linaro

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Linaro
Type Not-for-profit engineering organization
VAT ID No. 990027324
Registration No. 07180318
Founded June 3, 2010 (2010-06-03)
Headquarters
Focus(es) Open-source software for the ARM architecture
Members 29
Website linaro.org

Linaro is a not-for-profit engineering organization that works on open-source software for the ARM architecture, including the GCC toolchain, the Linux kernel, ARM power management, graphics and multimedia interfaces. It was announced at Computex in June 2010 by ARM, Freescale Semiconductor, IBM, Samsung, ST-Ericsson, and Texas Instruments in a joint press conference.[1] It also provides engineering and investment in upstream open source projects, a monthly release of tools and software[2] and support to silicon companies in upstreaming their system-on-a-chip (SoC) support.

Linaro focuses on open-source support of the ARM v7A architecture and ARM v8 Architecture, including SoCs that contain ARM Cortex-A9, Cortex-A15, Cortex-A53 and Cortex-A57 processor(s). Linaro engineering works with upstream projects on a set of requirements that are determined by the Technical Steering Committee (TSC. At the end of each month there is a release of tools and software that acts as a staging tree for code that will be pushed upstream. Linaro works on software that is close to the silicon such as kernel, multimedia, power management, graphics and security. Linaro aims to provide stable, tested tools and code for multiple software distributions to use to reduce low-level fragmentation of embedded Linux software.[3]

Activities[edit]

Linaro produces ARM tools, Linux kernels and builds of Linux distributions (including Android and Ubuntu) on member SoCs.

Linaro maintains an automated testing system called LAVA (Linaro Automated Validation Architecture) that Linaro developed.[4] LAVA is for automated testing of the open source components that are used in the major Linux-based software platforms.

The Linaro Enterprise Group (LEG) focuses on Linux development for ARM servers.[5] The Enterprise Group is made up of the following companies: AMD, AppliedMicro, ARM, Calxeda, Canonical, Cavium, Facebook, HiSilicon, HP, Marvell, Red Hat, Samsung, ST Ericsson and Texas Instruments. The team's mission is to bring competing companies together to work on common solutions to problems and enable OEM's, commercial Linux providers and System on Chip (SOC) vendors to collaborate in a neutral environment on the development of the core software needed by the rapidly emerging market for low-power hyperscale servers.

The Linaro Networking Group (LNG) is a coalition of technology companies whose mission is to deliver an enhanced core Linux platform for networking equipment. Its founding members include AppliedMicro, ARM, Enea, Freescale, LSI, MontaVista, Nokia Siemens Networks and Texas Instruments (TI).[6] With ARM-based SoCs part of the transformation occurring in cloud and mobile infrastructure applications such as switching, routing, base-stations and security, LNG’s members collaborate on fundamental software platforms to enable deployment of new services across a range of converged infrastructure platforms.

Milestones[edit]

March 2010 – Company founded

  • Membership agreements initiated
  • Engineering begins

June 2010 – Company launch

  • Website and wiki opened
  • Engineering organization ramps

November 2010 – First release

  • Linaro's 10.11 release is announced at TechCon

May 2011 - Second Release

  • Linaro's 11.05 release and monthly releases announced
  • Linaro Partner Program announced

August 2011

  • First independent Linaro Connect held

January 2012

  • Demo Friday begins to be held at each Linaro Connect

October 2012

  • LG Electronics joins Linaro
  • HiSilicon joins Linaro

November 2012

  • Linaro Enterprise Group (LEG) announced

February 2013

  • Linaro Networking Group (LNG) announced

May 2013

  • Broadcom joins Linaro

July 2013

  • Fujitsu Semiconductor joins Linaro

February 2014

  • Linaro forms Security Working Group
  • Qualcomm joins Linaro

March 2014

  • Allwinner joins Linaro
  • MediaTek joins Linaro
  • ZTE joins Linaro

Release schedule[edit]

It was announced in June 2010 at Computex that Linaro would follow a six-month engineering cycle that would culminate in a release of tools and software that represents an integrated build of software worked on during the cycle.[1] Linaro version 10.11 was released on November 10, 2010. In May 2011 Linaro began a monthly engineering cycle in place of the previous six month cycle.

Platforms[edit]

Linaro runs and continuously tests its output on member platforms. For the ARMv7A code, these include TI's OMAP 3 and OMAP 4, Samsung's Exynos, and ST-Ericsson's NovaThor U8500. For development on platforms prior to silicon availability, e.g. big.LITTLE development starting at the end of 2011 and ARMv8 work begun in 2012, Linaro uses ARM Fast Models and then the ARM Versatile Express platform, when the necessary hardware tiles are available.

Products[edit]

Linaro
Initial release 10 November 2010; 3 years ago (2010-11-10)[7]
Stable release 13.11 / 28 November 2013; 4 months ago (2013-11-28)
Platform ARMv7-A
License EPL (default) and other licences

There are three types of software downloads available from Linaro:

  1. At the end of each monthly cycle Linaro release an integrated build including all the software worked on during the cycle. These images are available from Linaro.org/Downloads.
  2. There are monthly versions of upstream software, such as GCC or QEMU. These are downloads from places such as launchpad.net/gcc-linaro.
  3. Linaro maintains public staging trees of upstream code they are working on. For example the kernel and u-boot trees are kept on git.linaro.org.

License[edit]

All code developed within Linaro working groups is open source and therefore available under standard Open Source Initiative (OSI) license terms. For more details see Linaro Membership Rules and Linaro Articles of Association.[8]

Core OS[edit]

Linaro is Linux-based and works with the open source community by providing aligned upstream engineering investment.[9]

References[edit]

  1. ^ a b "Daily Tech 5 June 2010". Dailytech.com. Retrieved 2012-07-22. 
  2. ^ Kowal, Kris (2010-06-04). "ARS Technica 3 June 2010". Arstechnica.com. Retrieved 2012-07-22. 
  3. ^ "9 June 2010". Lwn.net. Retrieved 2012-07-22. 
  4. ^ Linaro Limited (2011-05-27). "Linaro completes first year with demonstrations of Linaro Evaluation Builds for Android and Ubuntu and introduction of new partner program". Linaro.org. Retrieved 2012-07-22. 
  5. ^ Linaro Limited (2012-11-01). "Industry leaders-collaborate to accelerate software ecosystem for ARM servers and join Linaro". Linaro.org. Retrieved 2013-01-15. 
  6. ^ Linaro Limited (2013-02-20). "Networking Leaders Collaborate to Maximize Choice, Performance and Power Efficiency". Linaro.org. Retrieved 2013-01-15. 
  7. ^ Bennett, Jamie (2010-11-10). "Linaro 10.11 Final released". Retrieved 2013-12-02. 
  8. ^ Linaro Limited. "Linaro presentations and documents for download". Linaro.org. Retrieved 2012-07-22. 
  9. ^ Linaro Limited. "Linaro FAQs". Linaro.org. Retrieved 2012-07-22. 

External links[edit]