commit 4b5489cb36967c2a2f3bffa9386a50f8574b6b89
author Jayanth Dodderi Chidanand <jayanthdodderi.chidanand@arm.com> Mon Mar 28 15:28:55 2022 +0100
committer Jayanth Dodderi Chidanand <jayanthdodderi.chidanand@arm.com> Sun Apr 17 23:48:10 2022 +0100
tree 438344cb0c950e1dc96c6271f79d83766a8e2caf
parent 5a62c3f199a384454ba59311090353966cfae146

refactor(twed): improve TWED enablement in EL-3

The current implementation uses plat_arm API under generic code.
"plat_arm" API is a convention used with Arm common platform layer
and is reserved for that purpose. In addition, the function has a
weak definition which is not encouraged in TF-A.

Henceforth, removing the weak API with a configurable macro "TWED_DELAY"
of numeric data type in generic code and simplifying the implementation.
By default "TWED_DELAY" is defined to zero, and the delay value need to
be explicitly set by the platforms during buildtime.

Signed-off-by: Jayanth Dodderi Chidanand <jayanthdodderi.chidanand@arm.com>
Change-Id: I25cd6f628e863dc40415ced3a82d0662fdf2d75a

Makefile

diff --git a/Makefile b/Makefile
index da3e493..15340b4 100644
--- a/Makefile
+++ b/Makefile
@@ -1061,6 +1061,8 @@
         NR_OF_FW_BANKS \
         NR_OF_IMAGES_IN_FW_BANK \
         RAS_EXTENSION \
+        TWED_DELAY \
+        ENABLE_FEAT_TWED \
 )))
 
 ifdef KEY_SIZE
@@ -1176,6 +1178,8 @@
         ENABLE_FEAT_CSV2_2 \
         ENABLE_FEAT_PAN \
         FEATURE_DETECTION \
+        TWED_DELAY \
+        ENABLE_FEAT_TWED \
 )))
 
 ifeq (${SANITIZE_UB},trap)