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Keith Packard 32a437cbc8 libc/common: Handle MMU/MPU/USERSPACE and alignment requirements in malloc
When CONFIG_COMMON_LIBC_MALLOC_ARENA_SIZE is set to -1, make the malloc
arena use all remaining RAM. When an MMU exists, allocate the arena at
startup using k_mem_map. Otherwise, compute the available memory
automatically and use that.

When an MPU is being used to manage the malloc arena, make sure the heap
respects any MPU alignment requirements. Otherwise, align the heap to
sizeof(double).

Signed-off-by: Keith Packard <keithp@keithp.com>
2023-05-09 01:29:16 +09:00
.github ci: bsim workflow: Update bsim to version pointed by manifest 2023-05-04 19:51:20 +09:00
arch xtensa: limit speical exit() to XT_SIMULATOR 2023-05-08 09:59:54 +02:00
boards boards, samples: Fix minimal libc malloc arena settings 2023-05-09 01:29:16 +09:00
cmake libc: Move strnlen into common 2023-05-08 09:59:27 +02:00
doc doc: ztest: Use directives for ZTEST_SHUFFLE 2023-05-08 09:59:05 +02:00
drivers modem: modem_iface_uart_async: handle RX errors 2023-05-08 16:42:58 +02:00
dts drivers/adc: imx6sx ADC support. 2023-05-08 16:42:40 +02:00
include/zephyr libc/newlib: Remove duplicate declaration of z_malloc_partition 2023-05-09 01:29:16 +09:00
kernel kernel: idle: fix build error on arm-clang 2023-05-02 15:01:24 -05:00
lib libc/common: Handle MMU/MPU/USERSPACE and alignment requirements in malloc 2023-05-09 01:29:16 +09:00
misc misc: generated: update configs.c template with <zephyr/...> prefix 2022-05-09 12:45:29 -04:00
modules drivers: flash: Add Infineon CAT1 Flash driver 2023-05-08 11:16:09 +02:00
samples boards, samples: Fix minimal libc malloc arena settings 2023-05-09 01:29:16 +09:00
scripts twister: Bring back scope selection rule using platform_allow 2023-05-08 11:18:44 +02:00
share sysbuild: Add SB_OVERLAY_CONFIG 2023-05-05 09:42:10 +02:00
snippets snippets: add cdc-acm-console 2023-03-26 16:12:41 +02:00
soc drivers/adc: imx6sx ADC support. 2023-05-08 16:42:40 +02:00
submanifests
subsys Bluetooth: Audio: Shell: Add broadcast assistant add broadcast_id 2023-05-08 13:27:33 +02:00
tests tests/bsim: On timeout print info to stderr 2023-05-08 16:20:40 +02:00
.checkpatch.conf checkpatch: Remove ext/ from excludes 2022-11-30 12:06:55 -05:00
.clang-format clang-format: UseTab use ForContinuationAndIndentation 2023-05-05 11:06:54 -04:00
.codecov.yml yamllint: fix all yamllint comments errors 2023-01-04 01:16:45 +09:00
.editorconfig editorconfig: Improve verbosity 2022-04-28 08:55:39 -04:00
.gitattributes gitattributes: consider SVG files generated 2021-10-14 12:42:44 -04:00
.gitignore tests bsim/net: Separate bsim networking and bluetooth tests. 2023-04-12 22:42:03 +09:00
.gitlint gitlint: Stop ignoring merge, revert, fixup and squash commits 2022-01-10 08:13:36 -05:00
.mailmap mailmap: add two fixes for bad commits 2023-03-17 08:08:16 -04:00
.yamllint scripts: compliance: add support for YAMLLint 2023-01-04 17:29:23 +01:00
CMakeLists.txt compiler: add CONFIG_COMPILER_TRACK_MACRO_EXPANSION 2023-05-05 12:08:48 +02:00
CODE_OF_CONDUCT.md
CODEOWNERS codeowners: Remove Mieszko Mierunski from nRF drivers 2023-05-04 07:20:13 -05:00
CONTRIBUTING.rst
Kconfig
Kconfig.zephyr compiler: add CONFIG_COMPILER_TRACK_MACRO_EXPANSION 2023-05-05 12:08:48 +02:00
LICENSE
MAINTAINERS.yml MAINTAINERS: Add NXP SOF maintainers. 2023-05-08 10:47:14 -05:00
README.rst readme: Add support for light/dark modes in the logo 2022-11-18 08:58:59 +01:00
VERSION VERSION: Bump to 3.3.99 2023-02-19 20:34:26 +09:00
version.h.in cmake: version.h generation performed at build time 2022-02-08 07:50:24 -05:00
west.yml manifest: nrf hw models: Use latest w flash 2023-05-08 10:08:35 +02:00
zephyr-env.cmd
zephyr-env.sh everywhere: fix typos 2022-03-18 13:24:08 -04:00

.. 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