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World desk5 min

Civil Infrastructure Platform Announces New Super Long-Term Support Kernel

CIP’s 2019 SLTS announcement brought 64-bit Arm Cortex support to a Linux foundation built for industrial lifecycles, later extending to 10-year-plus maintenance horizons.
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On 25 February 2019, the Civil Infrastructure Platform (CIP) announced a Super Long Term Support (SLTS) Linux kernel that expanded support to 64-bit Arm Cortex processors. The project targets industrial and civil-infrastructure equipment that may need security maintenance, testing and carefully managed updates for far longer than a typical software product cycle.

What the 2019 CIP announcement introduced

CIP is an industrial open-source project hosted by the Linux Foundation. It provides a base layer of Linux components, tools and working methods for products whose service lives can span many years, including automation and other infrastructure systems.

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The 25 February 2019 announcement highlighted a new SLTS kernel and expanded architectural support for 64-bit Arm Cortex. CIP connected that capability with building automation, machine-learning and artificial-intelligence workloads. The announcement was therefore about more than adding a processor target: it presented a Linux foundation intended to remain maintainable throughout the life of industrial equipment.

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“Super long-term support” describes the maintenance model. It is not the name of a consumer desktop distribution, a single board computer or a retail software package.

Why industrial systems need SLTS

Industrial controllers, gateways, robots, transportation equipment and building systems are often installed for much longer than a normal operating-system release cycle. Replacing a kernel can require hardware qualification, regression testing, cybersecurity review, production recertification and coordinated field updates. A short support window can force an operator into an expensive platform migration even when the equipment itself remains useful.

CIP’s approach is designed to reduce that pressure by keeping a selected kernel line usable for a long period while applying security fixes and validating changes. The practical objective is controlled evolution: equipment makers can continue shipping a stable base while addressing vulnerabilities and selected hardware or subsystem needs.

What SLTS does not promise

  • It does not make every application or driver compatible indefinitely.
  • It does not remove the need for a product maker to test its complete device, board support package and user-space stack.
  • It does not establish a universal certification for every safety-critical deployment.
  • It does not provide a published cost or performance comparison with every commercial Linux fork.

How CIP’s maintenance model works

CIP’s later descriptions identify several elements of its reliability model:

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  • Security backports: relevant fixes are carried into maintained CIP kernel branches rather than requiring an immediate move to a new major kernel line.
  • Continuous testing: changes are tested over time to catch regressions that are especially costly in deployed infrastructure.
  • Upstream-first development: CIP works with the wider Linux community so useful changes can be reviewed and, where accepted, maintained upstream instead of living only in a private fork.
  • Real-time Linux work: the project includes real-time support as part of its long-term industrial focus, where predictable response can matter as much as average throughput.

The result is a maintenance program rather than a promise that the kernel will never change. Device manufacturers still need a release, patch-acceptance and field-update policy of their own.

ARM64 support and the workloads CIP named

The 2019 announcement specifically referred to 64-bit Arm Cortex support. That matters because ARM64 platforms are widely used in embedded and industrial designs where power consumption, integration and long product availability influence hardware selection.

CIP associated the expanded architecture with:

  • building-automation controllers and gateways;
  • machine-learning workloads deployed near equipment;
  • artificial-intelligence applications that need a maintained embedded Linux base.

Architecture support is only one part of a product decision. A team must also verify that its selected system-on-chip, board, peripherals, boot chain, real-time requirements and application libraries are covered by the particular CIP branch and vendor support package it intends to ship.

How the program expanded after 2019

CIP’s lifecycle commitments became more explicit as additional kernel lines entered the program.

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CIP series Information established by CIP What a product team should infer
4.4-cip Listed as a supported series in May 2025; an end date was not stated in the cited announcement. Confirm current maintenance status directly before selecting it for a new product.
4.19-cip Listed as a supported series in May 2025; an end date was not stated in the cited announcement. Check the project’s current branch status and the vendor’s support commitment.
5.10-cip Listed as a supported series in May 2025; an end date was not stated in the cited announcement. Validate available hardware enablement and update tooling for the target device.
6.1-cip Announced in October 2023 with a minimum 10-year maintenance commitment from its initial release. Its support promise is measured from that series’ initial release, not from the date a particular product ships.
6.12-cip Described by CIP in May 2025 as planned to run until mid-2035. Use the stated mid-2035 horizon as a planning reference, while confirming branch status and product-specific support.

In May 2025, CIP said five series were in the program: 4.4-cip, 4.19-cip, 5.10-cip, 6.1-cip and 6.12-cip. The 10-year minimum applies explicitly to the 6.1-based series, while the 6.12-based series had the published mid-2035 planning horizon.

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Relationship to safety-critical Linux

The 2019 announcement also connected CIP with the Enabling Linux in Safety Applications (ELISA) project. ELISA’s stated goal was to make it easier to build and certify Linux-based safety-critical applications, including systems for robotics, medical equipment, smart factories, transportation and autonomous driving.

That collaboration does not mean a CIP kernel alone certifies a machine or vehicle. Safety cases depend on the complete hardware, software, development process, documentation and applicable standards. CIP’s value is providing a maintained base and a path for upstream collaboration that can support those broader engineering activities.

Is the CIP kernel something you can download or buy?

CIP is an open-source infrastructure project, not a verified consumer SKU with a standard retail price. The available material does not establish an official Amazon product, subscription price or one universal boxed distribution.

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In practice, an equipment manufacturer or systems integrator would select a suitable CIP kernel series, obtain the source and build materials through the project or an industrial Linux vendor, then integrate board support, applications, security processes and field-update mechanisms. Commercial vendors may package and support CIP-based systems, but the terms depend on the vendor and product; they should not be assumed from the project announcement.

Questions to settle before adoption

  1. Which CIP branch is currently maintained and does its horizon cover the equipment’s expected service life?
  2. Does the branch support the exact Arm SoC, board, peripherals and boot process?
  3. Are real-time requirements, latency targets and required kernel configuration documented?
  4. How will security updates be tested, signed, deployed and rolled back in the field?
  5. What responsibilities remain with the silicon vendor, board supplier, integrator and equipment maker?

What the announcement changed

The 2019 announcement established CIP as a long-life Linux base aimed at infrastructure products and broadened that base to 64-bit Arm Cortex. Subsequent 6.1 and 6.12 series commitments turned the concept into a program with an explicit minimum 10-year promise for 6.1 and a published mid-2035 planning horizon for 6.12. Its distinguishing features are the lifecycle commitment, security maintenance, testing, upstream participation and real-time work—not a consumer-facing distribution brand.

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