From 205a7413076d7402e3d7bb1668f1a8e49c634292 Mon Sep 17 00:00:00 2001
From: Jerry Yu <jerry.h.yu@arm.com>
Date: Wed, 15 Mar 2023 18:58:51 +0800
Subject: [PATCH] change the clock source to MONOTONIC

We need a non-settable source to avoid security issues.

Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
---
 library/platform_util.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/library/platform_util.c b/library/platform_util.c
index 2b48f4f6a5..d8d9708379 100644
--- a/library/platform_util.c
+++ b/library/platform_util.c
@@ -181,7 +181,7 @@ mbedtls_ms_time_t mbedtls_ms_time(void)
     struct timespec tv;
     mbedtls_ms_time_t current_ms;
 
-    ret = clock_gettime(CLOCK_REALTIME, &tv);
+    ret = clock_gettime(CLOCK_MONOTONIC, &tv);
     if (ret) {
         return time(NULL) * 1000;
     }