Update avenger-96-board.rst

documentation/source/quick-start/avenger-96-board.rst

@@ -98,7 +98,7 @@ Example:
    $ MACHINE=<stm32mp1-avg96> bitbake <image-name>
 
 OHOS Linux flavour
-******************
+===================
 OHOS Linux flavour is based on poky distribution
 
 Supported images : core-image-minimal
@@ -137,6 +137,31 @@ To exit qemu, you can either shut down the system:
 
    root@stm32mp1-avg96:~# poweroff -f
 
+Build image
+***********
+
+Creating a uSD card image for the Avenger96 board
+=================================================
+
+Steps for building a BSP for ST's development boards can be referred: `<https://wiki.st.com/stm32mpu/index.php/STM32MP1_Distribution_Package>`_
+
+Building the BSP for the Avenger96 follows the scheme of the above build process but starts with a different 'repo' manifest file:
+
+* create the build directory following ST's recommendations at : https://wiki.st.com/stm32mpu/wiki/Example_of_directory_structure_for_Packages
+		
+* enter the working directory and execute the following commands :
+
+.. code-block:: console
+	
+   $ repo init -u https://github.com/dh-electronics/manifest-av96 -b dunfell
+	  
+   $ repo sync
+	  
+   $ source layers/meta-arrow/scripts/init-build-env.sh
+	  
+   $ bitbake av96-weston
+
+The last command will build the BSP. The full build will take about 1-2 hours dpending on machine and internet speed and will require around 25GB disk space. 
 
 Flashing an Application to Avenger96 board
 ******************************************
@@ -157,7 +182,7 @@ We can write it to a uSD card with:
 
 Once you have built your own AV96 Yocto image, your build provides all the files you need to use the Cube Programmer.
 
-Note: Refer for more information related to Aenger96 image programming : https://wiki.dh-electronics.com/index.php/Avenger96_Image_Programming
+Note: For more information related to Aenger96 image programming refer : https://wiki.dh-electronics.com/index.php/Avenger96_Image_Programming
 
 
 Debugging