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Nicolas Pitre 88477906f0 arm64: hold curr_cpu instance in tpidrro_el0
Let's fully exploit tpidrro_el0 by storing in it the current CPU's
struct _cpu instance alongside the userspace mode flag bit. This
greatly simplifies the code needed to get at the cpu structure, and
this paves the way to much simpler multi cluster support, as there
is no longer the need to decode MPIDR all the time.

The same code is used in the !SMP case as there are benefits there too
such as avoiding the literal pool, and it looks cleaner.

The tpidrro_el0 value is no longer stored in the exception stack frame.
Instead, we simply restore the user mode flag based on the SPSR value.
This way, more flag bits could be used independently in the future.

Signed-off-by: Nicolas Pitre <npitre@baylibre.com>
2021-04-14 15:06:21 -04:00
.buildkite ci: Bump to SDK 0.12.4 2021-03-30 13:14:35 -04:00
.github actions: limit issue tracker to main project 2021-04-13 17:39:39 -04:00
arch arm64: hold curr_cpu instance in tpidrro_el0 2021-04-14 15:06:21 -04:00
boards boards: arm: Add support for BMD-360-EVAL 2021-04-14 18:17:53 +02:00
cmake scripts: size_report: Add a depth parameter to CMakeLists.txt 2021-04-14 07:05:58 -04:00
doc doc: releases: add release note entry for TF-M update 2021-04-13 13:01:21 -04:00
drivers drivers: serial: uart_stm32 converted to use the new kwork API. 2021-04-14 18:21:33 +02:00
dts dts: stm32: h7: add missing dma properties 2021-04-14 18:18:12 +02:00
include arm64: hold curr_cpu instance in tpidrro_el0 2021-04-14 15:06:21 -04:00
kernel mem_slab: move global lock to per slab lock 2021-04-14 14:20:19 -04:00
lib lib: os: fix heap_print_info missing final else in construct 2021-04-14 09:20:20 -04:00
misc toolchain: add GEN_ABSOLUTE_SYM_KCONFIG() 2021-02-02 09:23:45 -05:00
modules modules: nanopb: introduce new module 2021-04-08 14:57:55 +02:00
samples Bluetooth: samples: Remove workqueue stack configuration 2021-04-14 18:19:32 +02:00
scripts scripts: coccinelle: Fix parse error 2021-04-14 14:18:02 -04:00
share cmake: using MD5_INFILE variable instead of ZephyrPackagePath.txt 2021-02-23 19:34:27 +01:00
soc soc: arm: cypress: fix soc_gpio missing final else in construct 2021-04-14 09:20:20 -04:00
subsys Bluetooth: GATT: Fix undefined symbols 2021-04-14 18:19:42 +02:00
tests tests: dma: add stm32h7 to loop_transfer 2021-04-14 18:18:12 +02:00
.checkpatch.conf checkpatch: ignore linux specific ENOSYS warning 2021-03-30 10:50:14 -05:00
.clang-format clang-format: Update with latest FOR_EACH macro list 2020-05-02 11:23:13 -04:00
.codecov.yml ci: add .codecov.yml for codecov.io configuration 2018-01-03 13:12:03 -05:00
.editorconfig editorconfig: indent Kconfig files with tabs 2020-07-08 21:30:38 -04:00
.gitattributes gitattributes: Tell linguist to ignore test pattern files 2020-04-23 14:07:57 -04:00
.gitignore gitignore: add twister-out 2020-12-11 14:13:02 -05:00
.gitlint gitlint: match max title length restriction with checkpatch 2019-05-29 14:43:16 -04:00
.mailmap mailmap: add entry for Sean Nyekjaer 2019-11-04 14:33:31 +01:00
.uncrustify.cfg uncrustify: Add a rule to remove space inside function argument 2018-10-16 09:50:03 -04:00
CMakeLists.txt cmake: removing map file from BYPRODUCTS as it is being renamed 2021-03-22 19:48:47 -04:00
CODE_OF_CONDUCT.md coc: move to markdown format 2019-01-24 15:37:15 -05:00
CODEOWNERS board: arm64: Add FVP BaseR AEMv8R board 2021-04-13 07:47:44 -04:00
CONTRIBUTING.rst doc: Fixed a link in CONTRIBUTING.rst 2019-02-28 12:46:04 -08:00
Kconfig kconfig: Clean up header comments and make them consistent 2019-11-04 17:31:27 -05:00
Kconfig.zephyr kernel: remove CONFIG_KERNEL_LINK_IN_VIRT 2021-03-16 15:03:44 -04:00
LICENSE
MAINTAINERS.yml MAINTAINERS: Add collaborators on STM32 Platforms 2021-04-09 05:26:44 -05:00
README.rst doc: remove references to shippable 2021-03-04 07:14:11 -06:00
VERSION release: Update patch level to 99 after the 2.5.0 release 2021-02-14 11:52:38 -05:00
version.h.in cmake: explain BUILD_VERSION and KERNEL_VERSION_* 2019-05-09 11:52:05 +02:00
west.yml west.yml: update NXP HAL for MKW40Z pin dtsi data 2021-04-14 09:06:36 -05:00
zephyr-env.cmd scripts: remove west from scripts/ 2019-01-29 10:15:01 +01:00
zephyr-env.sh zephyr_env.sh: Remove semicolons at ends of lines 2019-12-10 14:34:46 -08:00

.. raw:: html

   <a href="https://www.zephyrproject.org">
     <p align="center">
       <img src="doc/images/Zephyr-Project.png">
     </p>
   </a>

   <a href="https://bestpractices.coreinfrastructure.org/projects/74"><img
   src="https://bestpractices.coreinfrastructure.org/projects/74/badge"></a>
   <a href="https://buildkite.com/zephyr/zephyr">
   <img
   src="https://badge.buildkite.com/f5bd0dc88306cee17c9b38e78d11bb74a6291e3f40e7d13f31.svg?branch=master"></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-M,
Intel x86, ARC, Nios II, Tensilica Xtensa, and RISC-V, and a large number of
`supported boards`_.

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

.. start_include_here

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.

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

Community support is provided via mailing lists and Slack; 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
  (buildkite) nightly build results.
* **Chat**: Zephyr's Slack workspace is https://zephyrproject.slack.com.  Use
  this `Slack 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

.. _Slack Invite: https://tinyurl.com/y5glwylp
.. _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/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/guides/getting-help.html