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+Test Secure Payload (TSP) and Dispatcher (TSPD)
+===============================================
+
+Building the Test Secure Payload
+--------------------------------
+
+The TSP is coupled with a companion runtime service in the BL31 firmware,
+called the TSPD. Therefore, if you intend to use the TSP, the BL31 image
+must be recompiled as well. For more information on SPs and SPDs, see the
+:ref:`firmware_design_sel1_spd` section in the :ref:`Firmware Design`.
+
+First clean the TF-A build directory to get rid of any previous BL31 binary.
+Then to build the TSP image use:
+
+.. code:: shell
+
+ make PLAT=<platform> SPD=tspd all
+
+An additional boot loader binary file is created in the ``build`` directory:
+
+::
+
+ build/<platform>/<build-type>/bl32.bin
+
+--------------
+
+*Copyright (c) 2019, Arm Limited. All rights reserved.*