docs(fwu_metadata): add FWU metadata build options
Added the build options used in defining the firmware update metadata
structure.
Change-Id: Idd40ea629e643e775083f283b75c80f6c026b127
Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com>
diff --git a/docs/getting_started/build-options.rst b/docs/getting_started/build-options.rst
index 86618e4..2d0d826 100644
--- a/docs/getting_started/build-options.rst
+++ b/docs/getting_started/build-options.rst
@@ -860,9 +860,23 @@
# Resume execution
continue
+Firmware update options
+-----------------------
+
+- ``NR_OF_FW_BANKS``: Define the number of firmware banks. This flag is used
+ in defining the firmware update metadata structure. This flag is by default
+ set to '2'.
+
+- ``NR_OF_IMAGES_IN_FW_BANK``: Define the number of firmware images in each
+ firmware bank. Each firmware bank must have the same number of images as per
+ the `PSA FW update specification`_.
+ This flag is used in defining the firmware update metadata structure. This
+ flag is by default set to '1'.
+
--------------
*Copyright (c) 2019-2021, Arm Limited. All rights reserved.*
.. _DEN0115: https://developer.arm.com/docs/den0115/latest
+.. _PSA FW update specification: https://developer.arm.com/documentation/den0118/a/