mirror of
https://github.com/zephyrproject-rtos/zephyr
synced 2025-08-26 21:16:28 +00:00
20202902f2
These changes were obtained by running a script created by
Ulf Magnusson <Ulf.Magnusson@nordicsemi.no> for the following
specification:
1. Read the contents of all dts_fixup.h files in Zephyr
2. Check the left-hand side of the #define macros (i.e. the X in
#define X Y)
3. Check if that name is also the name of a Kconfig option
3.a If it is, then do nothing
3.b If it is not, then replace CONFIG_ with DT_ or add DT_ if it
has neither of these two prefixes
4. Replace the use of the changed #define in the code itself
(.c, .h, .ld)
Additionally, some tweaks had to be added to this script to catch some
of the macros used in the code in a parameterized form, e.g.:
- CONFIG_GPIO_STM32_GPIO##__SUFFIX##_BASE_ADDRESS
- CONFIG_UART_##idx##_TX_PIN
- I2C_SBCON_##_num##_BASE_ADDR
and to prevent adding DT_ prefix to the following symbols:
- FLASH_START
- FLASH_SIZE
- SRAM_START
- SRAM_SIZE
- _ROM_ADDR
- _ROM_SIZE
- _RAM_ADDR
- _RAM_SIZE
which are surprisingly also defined in some dts_fixup.h files.
Finally, some manual corrections had to be done as well:
- name##_IRQ -> DT_##name##_IRQ in uart_stm32.c
Signed-off-by: Andrzej Głąbek <andrzej.glabek@nordicsemi.no>
|
||
|---|---|---|
| .. | ||
| 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:
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.