FVP secure memory support documentation
Fixes ARM-software/tf-issues#64
Change-Id: I4e56c25f9dc7f486fbf6fa2f7d8253874119b989
diff --git a/docs/porting-guide.md b/docs/porting-guide.md
index 868eb33..8a024d8 100644
--- a/docs/porting-guide.md
+++ b/docs/porting-guide.md
@@ -630,6 +630,10 @@
this function. This information is accessible in the `bl33_meminfo` field in
the `bl31_args` structure pointed to by `bl2_to_bl31_args`.
+Platform security components are configured if required. For the Base FVP the
+TZC-400 TrustZone controller is configured to grant secure and non-secure access
+to DRAM.
+
This function is also responsible for initializing the storage abstraction layer
which is used to load further bootloader images.