TF-A: Add build option for Arm Feature Modifiers
This patch adds a new ARM_ARCH_FEATURE build option
to add support for compiler's feature modifiers.
It has the form '[no]feature+...' and defaults to
'none'. This option translates into compiler option
'-march=armvX[.Y]-a+[no]feature+...'.
Change-Id: I37742f270a898f5d6968e146cbcc04cbf53ef2ad
Signed-off-by: Alexei Fedorov <Alexei.Fedorov@arm.com>
diff --git a/docs/getting_started/build-options.rst b/docs/getting_started/build-options.rst
index 8adf4ad..d4eb6a7 100644
--- a/docs/getting_started/build-options.rst
+++ b/docs/getting_started/build-options.rst
@@ -26,6 +26,12 @@
``aarch64`` or ``aarch32`` as values. By default, it is defined to
``aarch64``.
+- ``ARM_ARCH_FEATURE``: Optional Arm Architecture build option which specifies
+ one or more feature modifiers. This option has the form ``[no]feature+...``
+ and defaults to ``none``. It translates into compiler option
+ ``-march=armvX[.Y]-a+[no]feature+...``. See compiler's documentation for the
+ list of supported feature modifiers.
+
- ``ARM_ARCH_MAJOR``: The major version of Arm Architecture to target when
compiling TF-A. Its value must be numeric, and defaults to 8 . See also,
*Armv8 Architecture Extensions* and *Armv7 Architecture Extensions* in