Add GPL-2.0+ SPDX-License-Identifier to source files

[karo-tx-uboot.git] / post / drivers / rtc.c

diff --git a/post/drivers/rtc.c b/post/drivers/rtc.c
index 7d4f9b88ee62f46ccca552a0dae9a6fc7f02f28b..cd19f7568df39984e982c190d767276ee0a859af 100644 (file)
--- a/post/drivers/rtc.c
+++ b/post/drivers/rtc.c
@@ -2,23 +2,7 @@
  * (C) Copyright 2002
  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
+ * SPDX-License-Identifier:    GPL-2.0+
  */
 
 #include <common.h>
@@ -28,6 +12,8 @@
  *
  * 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.
@@ -38,12 +24,10 @@
  *      nonleap-years.
  */
 
-#ifdef CONFIG_POST
-
 #include <post.h>
 #include <rtc.h>
 
-#if CONFIG_POST & CFG_POST_RTC
+#if CONFIG_POST & CONFIG_SYS_POST_RTC
 
 static int rtc_post_skip (ulong * diff)
 {
@@ -96,6 +80,10 @@ 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) {
@@ -176,8 +164,16 @@ 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;
 }
 
-#endif /* CONFIG_POST & CFG_POST_RTC */
-#endif /* CONFIG_POST */
+#endif /* CONFIG_POST & CONFIG_SYS_POST_RTC */