Zephyr resources

Overview

Our goal is to deploy new versions of the Zephyr kernel as soon as possible.
Zephyr’s release management and Zephyr’s release documentation.

Our Zephyr integration in redpesk currently provides the following Zephyr resources:

Common

• west tool - v1.2.0
  West meta tool is used to prepare, build and flash Zephyr firmware
• Zephyr SDK - v0.16.5
  Zephyr SDK contains toolchains used to build Zephyr firmware for several target architectures
  • Available target architectures can be found on the sdk release page here.
  • To find out a toolchain package name, please refer to the distribution package list under projects->distributions, switch to x86_64 mode and search for toolchain.

Kernels

• Zephyr kernel latest - v3.7.0
  This kernel will be regularly updated to new latest version
• Zephyr kernel LTS2 - v2.7.6
  This kernel will be regularly updated to new LTS2 version
• Zephyr kernel LTS3 - v3.7.0
  This kernel will be regularly updated to new LTS3 version

Important
Every available resource can be listed in your redpesk Factory under projects->distributions (note: for Zephyr distributions, please list resources for x86_64 arch, by selecting the arch in the top right dropdown menu)

Advanced description

Toolchains

As documented here, Zephyr SDK v0.16.5 provides the following toolchains:

• aarch64
• arc64
• arc
• arm
• microblazeel
• mips
• nios2
• riscv64
• sparc
• x86_64
• xtensa-dc233c
• xtensa-espressif-esp32s2
• xtensa-espressif-esp32s3
• xtensa-espressif-esp32
• xtensa-intel-ace15-mtpm
• xtensa-intel-tgl-adsp
• xtensa-mtk-mt8195-adsp
• xtensa-nxp-imx8m-adsp
• xtensa-nxp-imx8ulp-adsp
• xtensa-nxp-imx-adsp
• xtensa-nxp-rt500-adsp
• xtensa-nxp-rt600-adsp
• xtensa-sample-controller

If you need one of these toolchains, please refer to this doc to know how to include it in your Zephyr application build in the redpesk factory.

Hardware abstraction layers

Hardware abstraction layers are provided as modules in the Zephyr kernel.
To enhance user experience, lightweight HALs have been packaged in the common zephyr-kernel-modules-common package which is for now needed for any redpesk zephyr build.

Heaviest HALs have been packaged separately to speed up Zephyr application builds in zephyr-kernel-modules-hal-{hal_name} packages.
Here are concerned HALs and since which kernel versions they have been packages separately from their common package.

To know how to include the HAL you need in your Zephyr application build in the redpesk factory, please refer to this doc.

Releases Notes

Latest 3.7.0 - August 2024

From now on, zephyr release “Zephyr distribution” will be called zephyr latest.
With this release, we also update it to the latest 3.7.0 version of the Zephyr kernel.

LTS3 Introduction - August 2024

With this release, we introduce a new LTS3 “Zephyr distribution”:

LTS2 2.7.6 & Release 3.6.0 - July 2024

With this release, we provide an update for both available “Zephyr distribution”:

Both these distribution are still based and are containing packages from redpesk “Batz 2.0-update”.

First release - May 2024

With this first release, we provide support for building zephyr applications on two redpesk “Zephyr distribution”:

• Zephyr LTS2 = latest Zephyr LTS2 release
• Zephyr Release = latest Zephyr “stable” release.

Both these distribution are based and are containing packages from redpesk “Batz 2.0-update”.

Here are the versions of the used packages introduced with this release: