zephyr

History

Kumar Gala a394693d2f drivers: flash: NXP k6x/kw2xd: Convert to use device tree Convert NXP k6x and kw2xd flash driver to use device tree to get the flash controller name from device tree. We introduce yaml bindings for the "nxp,kinetis-ftfe" and "nxp,kinetis-ftfl" devices. Fixes: #5788 Signed-off-by: Kumar Gala <kumar.gala@linaro.org>		2018-01-29 16:34:49 -06:00
..
src	drivers: flash: NXP k6x/kw2xd: Convert to use device tree	2018-01-29 16:34:49 -06:00
CMakeLists.txt	cmake: remove IS_TEST handling	2018-01-08 10:03:57 -05:00
README.rst	samples: mmu: Convert doc to CMake	2017-11-12 21:13:23 -05:00
prj.conf	…
prj_single.conf	…
sample.yaml	samples: remove more build_only tags	2017-12-28 20:24:29 -05:00

README.rst

.. _mpu_test:

Memory Protection Unit (MPU) TEST
#################################

Overview
********
This test provides a set options to check the correct MPU configuration
against the following security issues:

* Read at an address that is reserved in the memory map.
* Write into the boot Flash/ROM.
* Run code located in SRAM.

If the MPU configuration is correct each option selected ends up in an MPU
fault.

Building and Running
********************

This project can be built and executed as follows:

.. zephyr-app-commands::
   :zephyr-app: samples/mpu/mpu_test
   :board: v2m_beetle
   :goals: build flash
   :compact:

Reset the board and you should be able to see on the corresponding
Serial Port the following message:

.. code-block:: console

   ***** BOOTING ZEPHYR OS v1.7.99 - BUILD: Mar  9 2017 13:01:59 *****
   *** MPU test options ***
   1 - Read a reserved address in the memory map
   2 - Write in to boot FLASH/ROM
   3 - Run code located in RAM
   Select an option:

To build the single thread version, use the supplied configuration file for
single thread: :file:`prj_single.conf`:

.. zephyr-app-commands::
   :zephyr-app: samples/mpu/mpu_test
   :board: v2m_beetle
   :conf: prj_single.conf
   :goals: run
   :compact:

To build a version that allows writes to the flash device, edit
``prj.conf``, and follow the directions in the comments to enable the
proper configs.

Sample Output
=============

.. code-block:: console

   ***** BOOTING ZEPHYR OS v1.7.99 - BUILD: May 12 2017 09:47:02 *****
   shell> select mpu_test
   mpu_test> read
   ***** BUS FAULT *****
     Executing thread ID (thread): 0x200003b8
     Faulting instruction address:  0x290
     Precise data bus error
     Address: 0x24000000
   Fatal fault in thread 0x200003b8! Aborting.