Add material for generating yotta module
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+# mbed TLS selftest programs
+
+This application runs the various selftest function of individual mbed TLS components. It serves as a basic sanity check for mbed TLS on your platform. In the future, a wider portion of the mbed TLS test suite will be ported on mbed OS.
+
+## Pre-requisites
+
+To build and run this example the requirements below are necessary:
+
+* A computer with the following software installed:
+ * [CMake](http://www.cmake.org/download/).
+ * [yotta](https://github.com/ARMmbed/yotta). Please note that **yotta has its own set of dependencies**, listed in the [installation instructions](http://armmbed.github.io/yotta/#installing-on-windows).
+ * [Python](https://www.python.org/downloads/).
+ * [ARM GCC toolchain](https://launchpad.net/gcc-arm-embedded).
+ * A serial terminal emulator (e.g. screen, pySerial, cu).
+* An [FRDM-K64F](http://developer.mbed.org/platforms/FRDM-K64F/) development board, or another board supported by mbed OS (in that case you'll have to substitute frdm-k64f-gcc with the appropriate target below).
+* A micro-USB cable.
+* If your OS is Windows, please follow the installation instructions [for the serial port driver](https://developer.mbed.org/handbook/Windows-serial-configuration).
+
+## Getting started
+
+1. Connect the FRDM-K64F to the computer with the micro-USB cable, being careful to use the micro-usb port labeled "OpenSDA".
+
+2. Navigate to the mbedtls directory supplied with your release and open a terminal.
+
+3. Set the yotta target:
+
+ ```
+ yotta target frdm-k64f-gcc
+ ```
+
+4. Check that there are no missing dependencies:
+
+ ```
+ $ yt ls
+ ```
+
+ If there are, yotta will list them in the terminal. Please install them before proceeding.
+
+5. Build mbedtls and the examples. This will take a long time if it is the first time:
+
+ ```
+ $ yt build
+ ```
+
+6. Copy `build/frdm-k64f-gcc/test/mbedtls-test-example-selftest.bin` to your mbed board and wait until the LED next to the USB port stops blinking.
+
+7. Start the serial terminal emulator and connect to the virtual serial port presented by FRDM-K64F. For settings, use 9600 baud, 8N1, no flow control.
+
+8. Press the reset button on the board.
+
+9. The output in the terminal window should look like:
+
+ ```
+ {{timeout;40}}
+ {{host_test_name;default}}
+ {{description;mbed TLS selftest program}}
+ {{test_id;MBEDTLS_SELFTEST}}
+ {{start}}
+
+ SHA-1 test #1: passed
+ SHA-1 test #2: passed
+ SHA-1 test #3: passed
+
+ SHA-224 test #1: passed
+ SHA-224 test #2: passed
+ SHA-224 test #3: passed
+ SHA-256 test #1: passed
+ SHA-256 test #2: passed
+ SHA-256 test #3: passed
+
+ [ ... several lines omitted ... ]
+
+ CTR_DRBG (PR = TRUE) : passed
+ CTR_DRBG (PR = FALSE): passed
+
+ HMAC_DRBG (PR = True) : passed
+ HMAC_DRBG (PR = False) : passed
+
+ ECP test #1 (constant op_count, base point G): passed
+ ECP test #2 (constant op_count, other point): passed
+
+ ENTROPY test: passed
+
+ [ All tests passed ]
+
+ {{success}}
+ {{end}}
+ ```