Update specifications section
Update the documentation on supported specifications:
- clean up PSA related info.
- add a page on FF-A
Change-Id: I68e8e7762bdce765f38acf503d1d762deb104cc7
Signed-off-by: Gyorgy Szing <Gyorgy.Szing@arm.com>
diff --git a/docs/standards/psa.rst b/docs/standards/psa.rst
new file mode 100644
index 0000000..1dbed39
--- /dev/null
+++ b/docs/standards/psa.rst
@@ -0,0 +1,21 @@
+Platform Security Architecture
+==============================
+
+Trusted Services is the home of the |PSA| reference implementation. The PSA partitions are implemented based on the |FF-A|
+specification. For details on FF-A support in TS please see the :doc:`ff-a` page.
+
+For background information on |PSA| please visit the `PSA homepage`_. If you are looking for information on certified products
+please visit `www.psacertified.org`_
+
+For a list of PSA specific components refer to deployments targeting the ``opteesp`` environment on the
+:doc:`/developer/deployments` page.
+
+--------------
+
+.. _`PSA homepage`: https://developer.arm.com/architectures/security-architectures/platform-security-architecture
+.. _`www.psacertified.org`: https://www.psacertified.org/certified-products/
+.. _`Hafnium project`: https://www.trustedfirmware.org/projects/hafnium/
+
+*Copyright (c) 2020-2021, Arm Limited and Contributors. All rights reserved.*
+
+SPDX-License-Identifier: BSD-3-Clause