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Dominik Ermel f17e4f1b76 modules/MCUboot: Add new Kconfig indicating downgrade prevention
Add the MCUBOOT_BOOTLOADER_NO_DOWNGRADE Kconfig option that allows,
when paired with MCUboot mode Kconfig, to indicate that the MCUboot
has been configured with downgrade prevention, which means that only
application with version higher than running can be swapped on next boot.

Signed-off-by: Dominik Ermel <dominik.ermel@nordicsemi.no>
2023-09-26 16:41:25 +02:00
.github ci: do not run twister tests on push events 2023-09-25 18:42:39 -04:00
arch uart: ns16550: use io-mapped DT property for IO port access 2023-09-26 12:03:04 +02:00
boards boards: nrf9160dk_nrf52840: Add missing inclusion 2023-09-26 13:49:43 +02:00
cmake cmake: warn the user that the toolchain cache hides errors 2023-09-22 13:42:21 +02:00
doc doc: release: 3.5: add a note on UART ns16550 driver changes 2023-09-26 12:03:04 +02:00
drivers drivers: select nocache only when supported 2023-09-26 15:09:51 +02:00
dts drivers: clock_control: Add PLL fracn for STM32U5 2023-09-26 15:06:56 +02:00
include/zephyr drivers: mm: refine includes of the header 2023-09-26 15:09:12 +02:00
kernel kernel: SMP: allow more than 5 CPU cores 2023-09-25 09:49:50 +02:00
lib lib: crc: Add CRC4 2023-09-26 08:36:09 +02:00
misc
modules modules/MCUboot: Add new Kconfig indicating downgrade prevention 2023-09-26 16:41:25 +02:00
samples samples/mcumgr/smp_svr: Build for DirectXIP with revert 2023-09-26 13:40:11 +02:00
scripts scripts/log_parser: Handle signed and unsigned char length modifier 2023-09-25 19:41:50 +02:00
share sysbuild: Add support for MCUboot/app encryption keys 2023-09-25 12:45:44 +02:00
snippets snippets: xen_dom0: add support for Renesas R-Car Gen3 boards 2023-09-15 11:15:00 +01:00
soc boards: ti_k3: prevent header dependencies 2023-09-26 12:03:54 +02:00
submanifests
subsys Bluetooth: Controller: nRF53: Fix missing NRF_CCM subscribe clear 2023-09-26 15:09:31 +02:00
tests tests: drivers: clock_control: Add PLL fracn test 2023-09-26 15:06:56 +02:00
.checkpatch.conf
.clang-format clang-format: flag *_SECTION_FOREACH as for loop 2023-05-26 11:04:54 -05:00
.codecov.yml
.editorconfig
.gitattributes
.gitignore scripts: compliance: add a check for missing west area maintainer enties 2023-09-14 08:13:57 -07:00
.gitlint .gitlint: de-duplicate defaults with zephyr_commit_rules.py 2023-09-21 09:29:24 +02:00
.mailmap mailmap: sort alphabetically 2023-05-15 13:23:32 -04:00
.yamllint
CMakeLists.txt cmake: skip build time priority checking with armclang 2023-09-20 20:24:46 +01:00
CODE_OF_CONDUCT.md
CODEOWNERS CODEOWNERS: Add code owener for gpio_altera_pio.c 2023-09-25 16:41:17 +02:00
CONTRIBUTING.rst
Kconfig
Kconfig.zephyr cmake: skip build time priority checking with armclang 2023-09-20 20:24:46 +01:00
LICENSE
MAINTAINERS.yml modules: cmsis-nn: add cmsis-nn module 2023-09-25 09:46:33 +02:00
README.rst
VERSION release: bump main to v3.4.99 2023-06-16 13:29:34 -04:00
version.h.in kernel: banner: Allow for customising version 2023-08-21 10:09:46 +02:00
west.yml manifest: update loramac-node to v4.7.0 2023-09-26 15:08:24 +02:00
zephyr-env.cmd
zephyr-env.sh

.. raw:: html

   <a href="https://www.zephyrproject.org">
     <p align="center">
       <picture>
         <source media="(prefers-color-scheme: dark)" srcset="doc/_static/images/logo-readme-dark.svg">
         <source media="(prefers-color-scheme: light)" srcset="doc/_static/images/logo-readme-light.svg">
         <img src="doc/_static/images/logo-readme-light.svg">
       </picture>
     </p>
   </a>

   <a href="https://bestpractices.coreinfrastructure.org/projects/74"><img
   src="https://bestpractices.coreinfrastructure.org/projects/74/badge"></a>
   <a
   href="https://github.com/zephyrproject-rtos/zephyr/actions/workflows/twister.yaml?query=branch%3Amain">
   <img
   src="https://github.com/zephyrproject-rtos/zephyr/actions/workflows/twister.yaml/badge.svg?event=push"></a>


The Zephyr Project is a scalable real-time operating system (RTOS) supporting
multiple hardware architectures, optimized for resource constrained devices,
and built with security in mind.

The Zephyr OS is based on a small-footprint kernel designed for use on
resource-constrained systems: from simple embedded environmental sensors and
LED wearables to sophisticated smart watches and IoT wireless gateways.

The Zephyr kernel supports multiple architectures, including ARM (Cortex-A,
Cortex-R, Cortex-M), Intel x86, ARC, Nios II, Tensilica Xtensa, and RISC-V,
SPARC, MIPS, and a large number of `supported boards`_.

.. below included in doc/introduction/introduction.rst


Getting Started
***************

Welcome to Zephyr! See the `Introduction to Zephyr`_ for a high-level overview,
and the documentation's `Getting Started Guide`_ to start developing.

.. start_include_here

Community Support
*****************

Community support is provided via mailing lists and Discord; see the Resources
below for details.

.. _project-resources:

Resources
*********

Here's a quick summary of resources to help you find your way around:

* **Help**: `Asking for Help Tips`_
* **Documentation**: http://docs.zephyrproject.org (`Getting Started Guide`_)
* **Source Code**: https://github.com/zephyrproject-rtos/zephyr is the main
  repository; https://elixir.bootlin.com/zephyr/latest/source contains a
  searchable index
* **Releases**: https://github.com/zephyrproject-rtos/zephyr/releases
* **Samples and example code**: see `Sample and Demo Code Examples`_
* **Mailing Lists**: users@lists.zephyrproject.org and
  devel@lists.zephyrproject.org are the main user and developer mailing lists,
  respectively. You can join the developer's list and search its archives at
  `Zephyr Development mailing list`_. The other `Zephyr mailing list
  subgroups`_ have their own archives and sign-up pages.
* **Nightly CI Build Status**: https://lists.zephyrproject.org/g/builds
  The builds@lists.zephyrproject.org mailing list archives the CI nightly build results.
* **Chat**: Real-time chat happens in Zephyr's Discord Server. Use
  this `Discord Invite`_ to register.
* **Contributing**: see the `Contribution Guide`_
* **Wiki**: `Zephyr GitHub wiki`_
* **Issues**: https://github.com/zephyrproject-rtos/zephyr/issues
* **Security Issues**: Email vulnerabilities@zephyrproject.org to report
  security issues; also see our `Security`_ documentation. Security issues are
  tracked separately at https://zephyrprojectsec.atlassian.net.
* **Zephyr Project Website**: https://zephyrproject.org

.. _Discord Invite: https://chat.zephyrproject.org
.. _supported boards: http://docs.zephyrproject.org/latest/boards/index.html
.. _Zephyr Documentation: http://docs.zephyrproject.org
.. _Introduction to Zephyr: http://docs.zephyrproject.org/latest/introduction/index.html
.. _Getting Started Guide: http://docs.zephyrproject.org/latest/develop/getting_started/index.html
.. _Contribution Guide: http://docs.zephyrproject.org/latest/contribute/index.html
.. _Zephyr GitHub wiki: https://github.com/zephyrproject-rtos/zephyr/wiki
.. _Zephyr Development mailing list: https://lists.zephyrproject.org/g/devel
.. _Zephyr mailing list subgroups: https://lists.zephyrproject.org/g/main/subgroups
.. _Sample and Demo Code Examples: http://docs.zephyrproject.org/latest/samples/index.html
.. _Security: http://docs.zephyrproject.org/latest/security/index.html
.. _Asking for Help Tips: https://docs.zephyrproject.org/latest/develop/getting_started/index.html#asking-for-help