LWMON5: POST RTC fix

[u-boot] / post / drivers / rtc.c

diff --git a/post/drivers/rtc.c b/post/drivers/rtc.c
index 7d4f9b88ee62f46ccca552a0dae9a6fc7f02f28b..e3da5e64ced488cd7b40d9ea4c8009677e447603 100644 (file)
--- a/post/drivers/rtc.c
+++ b/post/drivers/rtc.c
@@ -28,6 +28,8 @@
  *
  * The Real Time Clock (RTC) operation is verified by this test.
  * The following features are verified:
+ *   o) RTC Power Fault
+ *     This is verified by analyzing the rtc_get() return status.
  *   o) Time uniformity
  *      This is verified by reading RTC in polling within
  *      a short period of time.
@@ -96,6 +98,10 @@ int rtc_post_test (int flags)
        unsigned int ynl = 1999;
        unsigned int yl = 2000;
        unsigned int skipped = 0;
+       int reliable;
+
+       /* Time reliability */
+       reliable = rtc_get (&svtm);
 
        /* Time uniformity */
        if (rtc_post_skip (&diff) != 0) {
@@ -176,6 +182,15 @@ int rtc_post_test (int flags)
        }
        rtc_post_restore (&svtm, skipped);
 
+       /* If come here, then RTC operates correcty, check the correctness
+        * of the time it reports.
+        */
+       if (reliable < 0) {
+               post_log ("RTC Time is not reliable! Power fault? \n");
+
+               return -1;
+       }
+
        return 0;
 }