diff --git a/fih_test_tool/util.sh b/fih_test_tool/util.sh
new file mode 100644
index 0000000..2b7c78e
--- /dev/null
+++ b/fih_test_tool/util.sh
@@ -0,0 +1,30 @@
+# Copyright (c) 2021, Arm Limited. All rights reserved.
+#
+# SPDX-License-Identifier: BSD-3-Clause
+
+set_default()
+{
+    if test -z "$(eval echo '$'$1)"
+    then
+        eval export $1='$2'
+    fi
+}
+
+info()
+{
+    printf "[INF] $1\n" 1>&2
+}
+warn()
+{
+    printf "\e[33m[WRN] $1\e[0m\n" 1>&2
+}
+error()
+{
+    printf "\e[31m[ERR] $1\e[0m\n" 1>&2
+    if test -n "$2"
+    then
+        exit $2
+    else
+        exit 1
+    fi
+}