summaryrefslogtreecommitdiff
path: root/docs/porting-guide.rst
diff options
context:
space:
mode:
Diffstat (limited to 'docs/porting-guide.rst')
-rw-r--r--docs/porting-guide.rst9
1 files changed, 9 insertions, 0 deletions
diff --git a/docs/porting-guide.rst b/docs/porting-guide.rst
index 5a017ce0f..f612e1ca5 100644
--- a/docs/porting-guide.rst
+++ b/docs/porting-guide.rst
@@ -3463,6 +3463,15 @@ build system.
to ``no``. If any of the options ``EL3_PAYLOAD_BASE`` or ``PRELOADED_BL33_BASE``
are used, this flag will be set to ``no`` automatically.
+- **ARM_ARCH_MAJOR and ARM_ARCH_MINOR**
+ By default, ARM_ARCH_MAJOR.ARM_ARCH_MINOR is set to 8.0 in ``defaults.mk``,
+ if the platform makefile/build defines or uses the correct ARM_ARCH_MAJOR and
+ ARM_ARCH_MINOR then mandatory Architectural features available for that Arch
+ version will be enabled by default and any optional Arch feature supported by
+ the Architecture and available in TF-A can be enabled from platform specific
+ makefile. Look up to ``arch_features.mk`` for details pertaining to mandatory
+ and optional Arch specific features.
+
Platform include paths
----------------------