commit 0a46eb11863c05017c2200fc6649456ffd42149c
author Varun Wadekar <vwadekar@nvidia.com> Thu Apr 13 21:06:18 2023 +0100
committer Varun Wadekar <vwadekar@nvidia.com> Sun Apr 30 11:04:59 2023 +0100
tree 54fe24d3c19f22e8ca05d46e1050bcf33d87515f
parent 0dbc9f3ac3893ee1f29e2df65b09270a44a451e1

feat(el3-runtime): handle traps for IMPDEF registers accesses

This patch introduces support to handle traps from lower ELs for
IMPDEF system register accesses. The actual support is left to the
platforms to implement.

Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Change-Id: I623d5c432b4ce4328b68f238c15b1c83df97c1e5

make_helpers/defaults.mk

diff --git a/make_helpers/defaults.mk b/make_helpers/defaults.mk
index 808a058..a7bc426 100644
--- a/make_helpers/defaults.mk
+++ b/make_helpers/defaults.mk
@@ -240,6 +240,9 @@
 # operations.
 HW_ASSISTED_COHERENCY		:= 0
 
+# Flag to enable trapping of implementation defined sytem registers
+IMPDEF_SYSREG_TRAP		:= 0
+
 # Set the default algorithm for the generation of Trusted Board Boot keys
 KEY_ALG				:= rsa