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Paul Sokolovsky f0ea13d2a2 ext: mbedtls: Don't define MBEDTLS_PLATFORM_NO_STD_FUNCTIONS
That means that when mbedTLS will need functions like snprintf(),
printf(), a few others, they will be used from libc, as done
normally by most of software. Note that mentioned functions
aren't normally used on code paths doing TLS communication per se.
Instead, they are used by debug logging, additional "print info"
style functions, etc.

Before, when MBEDTLS_PLATFORM_NO_STD_FUNCTIONS was defined, those
functions were stubbed out, so silently didn't work as expected
(a specific symptom seen was that some debug messages were printed
as garbage, because an buffer on stack was passed to dummy snprintf
stub, which didn't do anything to it, and its uninitialized contents
were printed afterwards. Instead, the expectation was that an
application would call a "setter" function to set snprintf, etc.
implementations as provided by application itself.

For Zephyr, we clearly don't need to burden applications with such
setup, instead Zephyr, as an OS, provides integrated environment
were matters like that "just work". So, we just switch to libc-based
functions. If there ever will be usecases for
MBEDTLS_PLATFORM_NO_STD_FUNCTIONS, it can be made configurable later.

Fixes: #16303

Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
2019-05-23 09:27:59 -04:00
.github/ISSUE_TEMPLATE templates: Update issue templates 2018-12-07 08:27:20 -05:00
.known-issues doc: introduce final structure 2019-02-05 07:04:40 -05:00
arch arch: arm: fp sharing: save & restore FP registers in context-switch 2019-05-21 15:29:44 -04:00
boards boards: mimxrt1060_evk: Enable mcux lpi2c driver and pins 2019-05-23 06:27:55 -05:00
cmake cmake: Toolchain abstraction: Abstraction of implicit-int error flag 2019-05-22 15:28:07 +02:00
doc doc: dfu: Fix module links 2019-05-22 12:41:09 -04:00
drivers drivers: adxl362: use burst transfer 2019-05-23 06:55:38 -05:00
dts dts: atmel: Fix node name for device_id 2019-05-22 15:50:39 -05:00
ext ext: mbedtls: Don't define MBEDTLS_PLATFORM_NO_STD_FUNCTIONS 2019-05-23 09:27:59 -04:00
include linker: kobject-text.ld: avoid backwards location counter 2019-05-23 06:59:14 -04:00
kernel kernel: timeout: add syscall for runtime clk freq 2019-05-22 23:33:55 +02:00
lib lvgl: kconfig: Remove menu and use a 'menuconfig' symbol 2019-05-21 14:19:20 -05:00
misc license: cleanup: add SPDX Apache-2.0 license identifier 2019-04-07 08:45:22 -04:00
samples usb: webusb: Trivial syntax fix 2019-05-22 11:19:49 +02:00
scripts sanitycheck: Execute binary in output directory 2019-05-23 08:37:09 -04:00
soc drivers: add CC13xx / CC26xx I2C driver 2019-05-21 15:37:22 -04:00
subsys subsys/ztest: Documentation fix 2019-05-23 08:35:06 -04:00
tests tests/bluetooth/tester: remove spurious CONFIG_GPIO=y 2019-05-22 10:54:40 -04:00
.checkpatch.conf scripts/checkpatch.pl: fix root dir detection and enable it 2019-05-22 12:40:20 -04:00
.clang-format clang-format: add support for clang-format 2018-11-19 09:31:44 -05:00
.codecov.yml
.editorconfig editorconfig: Set insert_final_newline true 2019-04-10 14:15:38 +02:00
.gitattributes
.gitignore gitignore: ignore IDE files 2018-11-21 15:05:07 +01:00
.gitlint gitlint: do not start with subsys: 2018-11-28 09:22:01 -08:00
.mailmap mailmap: add entry for ruuddw 2018-07-05 09:57:23 -04:00
.shippable.yml ci: send email to builds@ mailing list if master fails 2019-05-06 13:39:30 -04:00
.uncrustify.cfg uncrustify: Add a rule to remove space inside function argument 2018-10-16 09:50:03 -04:00
CMakeLists.txt cmake: Toolchain abstraction: Abstraction of implicit-int error flag 2019-05-22 15:28:07 +02:00
CODE_OF_CONDUCT.md coc: move to markdown format 2019-01-24 15:37:15 -05:00
CODEOWNERS CODEOWNERS: Add code ownership for gen_relocate_app.py 2019-05-23 06:59:14 -04:00
CONTRIBUTING.rst doc: Fixed a link in CONTRIBUTING.rst 2019-02-28 12:46:04 -08:00
Kconfig
Kconfig.zephyr linker: Port usage of custom-sections to use Cmake 2019-05-20 22:28:28 -04:00
LICENSE
Makefile doc: add clean target to Makefile 2019-02-05 16:58:14 -05:00
README.rst doc: add references to builds mailing list 2019-05-21 21:40:20 -04:00
VERSION release: Post-release patch level update 2019-04-16 15:50:31 -05:00
version.h.in cmake: explain BUILD_VERSION and KERNEL_VERSION_* 2019-05-09 11:52:05 +02:00
west.yml qmsi: move to a zephyr module 2019-05-22 09:28:56 -04:00
zephyr-env.cmd scripts: remove west from scripts/ 2019-01-29 10:15:01 +01:00
zephyr-env.sh env: ignore unset var 2019-05-20 09:26:31 -04:00

.. 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>
   <img
   src="https://api.shippable.com/projects/58ffb2b8baa5e307002e1d79/badge?branch=master">


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.

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://zephyrproject.org/developers/#downloads
* **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
  (shippable) 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/yarkuemx
.. _supported boards: http://docs.zephyrproject.org/latest/boards
.. _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