67 lines
1.8 KiB
ReStructuredText
67 lines
1.8 KiB
ReStructuredText
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.. _mpu_test:
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Memory Protection Unit (MPU) TEST
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#################################
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Overview
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********
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This test provides a set options to check the correct MPU configuration
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against the following security issues:
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* Read at an address that is reserved in the memory map.
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* Write into the boot Flash/ROM.
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* Run code located in SRAM.
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If the MPU configuration is correct each option selected ends up in an MPU
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fault.
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Building and Running
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********************
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This project can be built and executed as follows:
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.. code-block:: console
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$ cd samples/mpu_test
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$ make BOARD=v2m_beetle
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Connect the board to your host computer using the USB port.
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Flash the generated zephyr.bin on the board.
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Reset the board and you should be able to see on the corresponding
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Serial Port the following message:
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.. code-block:: console
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***** BOOTING ZEPHYR OS v1.7.99 - BUILD: Mar 9 2017 13:01:59 *****
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*** MPU test options ***
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1 - Read a reserved address in the memory map
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2 - Write in to boot FLASH/ROM
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3 - Run code located in RAM
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Select an option:
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To build the single thread version, use the supplied configuration file for
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single thread: :file:`prj_single.conf`:
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.. code-block:: console
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$ make BOARD=v2m_beetle CONF_FILE=prj_single.conf run
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Sample Output
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=============
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.. code-block:: console
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***** BOOTING ZEPHYR OS v1.7.99 - BUILD: Mar 9 2017 13:01:59 *****
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*** MPU test options ***
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1 - Read a reserved address in the memory map
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2 - Write in to boot FLASH/ROM
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3 - Run code located in RAM
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Select an option:
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1 - Read a reserved address in the memory map
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***** MPU FAULT *****
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Executing thread ID (thread): 0x20000258
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Faulting instruction address: 0x2ac
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Data Access Violation
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Address: 0x20040000
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Fatal fault in essential thread! Spinning...
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