CloudEdge/FreeRTOS-Kernel
Archived
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
This repository has been archived on 2023-11-05. You can view files and clone it, but cannot push or open issues or pull requests.
2,776 Commits 1 Branch 0 Tags 112 MiB
C 93.4%
Assembly 5.8%
CMake 0.6%
b6a43866da
Go to file
Gaurav-Aggarwal-AWS b6a43866da
Add support for privileged heap to ARMV8-M ports (#85) 
If xTaskCreate API is used to create a task, the task's stack is
allocated on heap using pvPortMalloc. This places the task's stack
in the privileged data section, if the heap is placed in the
privileged data section.

We use a separate MPU region to grant a task access to its stack.
If the task's stack is in the privileged data section, this results in
overlapping MPU regions as privileged data section is already protected
using a separate MPU region. ARMv8-M does not allow overlapping MPU
regions and this results in a fault. This commit ensures to not use a
separate MPU region for the task's stack if it lies within the
privileged data section.

Note that if the heap memory is placed in the privileged data section,
the xTaskCreate API cannot be used to create an unprivileged task as
the task's stack will be in the privileged data section and the task
won't have access to it. xTaskCreateRestricted and
xTaskCreateRestrictedStatic API should be used to create unprivileged
tasks.

Signed-off-by: Gaurav Aggarwal <aggarg@amazon.com>
2020-07-14 16:22:14 -07:00
.github Create pull_request_template.md 2020-03-17 13:11:11 -07:00
include Style: uncrustify kernel files 2020-07-08 10:24:06 -07:00
portable Add support for privileged heap to ARMV8-M ports (#85) 2020-07-14 16:22:14 -07:00
CONTRIBUTING.md Added CONTRIBUTING (#18) 2020-02-25 16:22:57 -08:00
croutine.c Style: uncrustify kernel files 2020-07-08 10:24:06 -07:00
event_groups.c Style: uncrustify kernel files 2020-07-08 10:24:06 -07:00
GitHub-FreeRTOS-Kernel-Home.url Adding url to direct users to FreeRTOS-Kernel github page. (#32) 2020-03-17 19:30:19 -07:00
History.txt Updated History.txt for task notification array change (#65) 2020-05-28 09:55:17 -07:00
LICENSE.md Bring license in sync with FreeRTOS/FreeRTOS. (#20) 2020-02-27 14:33:46 -08:00
list.c Style: uncrustify kernel files 2020-07-08 10:24:06 -07:00
queue.c Style: uncrustify kernel files 2020-07-08 10:24:06 -07:00
Quick_Start_Guide.url Add quick start guide. 2013-04-30 19:37:00 +00:00
README.md Replacing readme.txt with README.md. (#11) 2020-02-16 13:18:58 -08:00
SECURITY.md Create SECURITY.md 2020-03-17 13:08:50 -07:00
stream_buffer.c Style: uncrustify kernel files 2020-07-08 10:24:06 -07:00
tasks.c Style: uncrustify kernel files 2020-07-08 10:24:06 -07:00
timers.c Style: uncrustify kernel files 2020-07-08 10:24:06 -07:00

README.md

Getting started

This repository contains FreeRTOS kernel source/header files and kernel ports only. This repository is referenced as a submodule in FreeRTOS/FreeRTOS repository, which contains pre-configured demo application projects under FreeRTOS/Demo directory.

The easiest way to use FreeRTOS is to start with one of the pre-configured demo application projects. That way you will have the correct FreeRTOS source files included, and the correct include paths configured. Once a demo application is building and executing you can remove the demo application files, and start to add in your own application source files. See the FreeRTOS Kernel Quick Start Guide for detailed instructions and other useful links.

Additionally, for FreeRTOS kernel feature information refer to the Developer Documentation, and API Reference.

Getting help

If you have any questions or need assistance troubleshooting your FreeRTOS project, we have an active community that can help on the FreeRTOS Community Support Forum.

Cloning this repository

To clone using HTTPS:

git clone https://github.com/FreeRTOS/FreeRTOS-Kernel.git

Using SSH:

git clone git@github.com:FreeRTOS/FreeRTOS-Kernel.git

Repository structure

  • The root of this repository contains the three files that are common to every port - list.c, queue.c and tasks.c. The kernel is contained within these three files. croutine.c implements the optional co-routine functionality - which is normally only used on very memory limited systems.

  • The ./portable directory contains the files that are specific to a particular microcontroller and/or compiler. See the readme file in the ./portable directory for more information.

  • The ./include directory contains the real time kernel header files.