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https://github.com/zephyrproject-rtos/zephyr
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e18fcbba5a
Now that device_api attribute is unmodified at runtime, as well as all the other attributes, it is possible to switch all device driver instance to be constant. A coccinelle rule is used for this: @r_const_dev_1 disable optional_qualifier @ @@ -struct device * +const struct device * @r_const_dev_2 disable optional_qualifier @ @@ -struct device * const +const struct device * Fixes #27399 Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com> |
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| src | ||
| CMakeLists.txt | ||
| prj_single.conf | ||
| prj.conf | ||
| README.rst | ||
| sample.yaml | ||
.. _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:
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
uart:~$ mpu read
***** BUS FAULT *****
Precise data bus error
BFAR Address: 0x24000000
***** Hardware exception *****
Current thread ID = 0x20000400
Faulting instruction address = 0x80004a8
Fatal fault in thread 0x20000400! Aborting.