diff --git a/docs/components/realm-management-extension.rst b/docs/components/realm-management-extension.rst
index 5fa5140..ea921fc 100644
--- a/docs/components/realm-management-extension.rst
+++ b/docs/components/realm-management-extension.rst
@@ -73,6 +73,14 @@
 world. It initializes the RMM and handles Realm Management Interface (RMI)
 SMC calls from Non-secure and Realm worlds.
 
+There is a contract between RMM and RMMD that defines the arguments that the
+former needs to take in order to initialize and also the possible return values.
+This contract is defined in the RMM Boot Interface, which can be found at
+:ref:`rmm_el3_boot_interface`.
+
+There is also a specification of the runtime services provided by TF-A
+to RMM. This can be found at :ref:`runtime_services_and_interface`.
+
 Test Realm Payload (TRP)
 *************************
 TRP is a small test payload that runs at R-EL2 and implements a subset of