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-rw-r--r--docs/user-guide.rst6
1 files changed, 4 insertions, 2 deletions
diff --git a/docs/user-guide.rst b/docs/user-guide.rst
index 5ec932f93..b8bb4a190 100644
--- a/docs/user-guide.rst
+++ b/docs/user-guide.rst
@@ -471,8 +471,10 @@ Common build options
.. __: `platform-interrupt-controller-API.rst`
.. __: `interrupt-framework-design.rst`
-- ``HANDLE_EA_EL3_FIRST``: When defined External Aborts and SError Interrupts
- will be always trapped in EL3 i.e. in BL31 at runtime.
+- ``HANDLE_EA_EL3_FIRST``: When set to ``1``, External Aborts and SError
+ Interrupts will be always trapped in EL3 i.e. in BL31 at runtime. When set to
+ ``0`` (default), these exceptions will be trapped in the current exception
+ level (or in EL1 if the current exception level is EL0).
- ``HW_ASSISTED_COHERENCY``: On most Arm systems to-date, platform-specific
software operations are required for CPUs to enter and exit coherency.