diff --git a/model/base-aemva-common.sh b/model/base-aemva-common.sh
index f1a5389..8421dd7 100644
--- a/model/base-aemva-common.sh
+++ b/model/base-aemva-common.sh
@@ -103,6 +103,10 @@
 # CRC32 support
 reset_var supports_crc32
 
+# Accelerator instruction support level (none, FEAT_LS64,
+# FEAT_LS64_V, FEAT_LS64_ACCDATA)
+reset_var accelerator_support_level
+
 source "$ci_root/model/fvp_common.sh"
 
 #------------ Common configuration --------------
@@ -163,6 +167,14 @@
 EOF
 fi
 
+# If accelerator support level enabled, disable bitwise negation
+# for values stored/read using FEAT_LS64* instructions.
+if [ "$accelerator_support_level" != "0" ]; then
+	cat <<EOF >>"$model_param_file"
+-C bp.ls64_testing_fifo.op_type=0
+EOF
+fi
+
 #------------ Cluster0 configuration --------------
 
 cat <<EOF >>"$model_param_file"
@@ -414,6 +426,13 @@
 EOF
 fi
 
+# Accelerator support level enabled
+if [ "$accelerator_support_level" != "0" ]; then
+	cat <<EOF >>"$model_param_file"
+-C cluster0.arm_v8_7_accelerator_support_level=1
+EOF
+fi
+
 #------------ Cluster1 configuration (if exists) --------------
 if [ "$is_dual_cluster" = "1" ]; then
 	cat <<EOF >>"$model_param_file"
@@ -579,6 +598,13 @@
 EOF
 fi
 
+# Accelerator support level enabled
+if [ "$accelerator_support_level" != "0" ]; then
+	cat <<EOF >>"$model_param_file"
+-C cluster1.arm_v8_7_accelerator_support_level=1
+EOF
+fi
+
 fi
 
 # 48bit PA size: in order to access memory in high address ranges the