diff --git a/docs/getting_started/porting-guide.rst b/docs/getting_started/porting-guide.rst
index b3092c7..5b88fcb 100644
--- a/docs/getting_started/porting-guide.rst
+++ b/docs/getting_started/porting-guide.rst
@@ -587,6 +587,21 @@
   Defines the Non-secure Access IDentity (NSAID) that the NPU shall use to
   access the protected memory that contains inference data.
 
+- **ARM_ETHOSN_NPU_FW_IMAGE_BASE** and **ARM_ETHOSN_NPU_FW_IMAGE_LIMIT**
+
+- Provide FCONF entries to configure the image source for NPU firmware (and certificates).
+
+- Add MMU mappings such that:
+
+ - BL2 can write the NPU firmware into the region defined by
+   ``ARM_ETHOSN_NPU_FW_IMAGE_BASE`` and ``ARM_ETHOSN_NPU_FW_IMAGE_LIMIT``
+ - BL31 (SiP service) can read the NPU firmware from the same region
+
+- Add the firmware image ID ``ARM_ETHOSN_NPU_FW_IMAGE_ID`` to the list of images loaded by BL2
+
+Please see the reference implementation code for the Juno platform as an example.
+
+
 The following constant is optional. It should be defined to override the default
 behaviour of the ``assert()`` function (for example, to save memory).