Initial revision

1 files changed, 183 insertions, 0 deletions

diff --git a/post/rtc.c b/post/rtc.c
new file mode 100644
index 0000000..7d4f9b8
--- /dev/null
+++ b/post/rtc.c
@@ -0,0 +1,183 @@
+/*
+ * (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
+ */
+
+#include <common.h>
+
+/*
+ * RTC test
+ *
+ * The Real Time Clock (RTC) operation is verified by this test.
+ * The following features are verified:
+ *   o) Time uniformity
+ *      This is verified by reading RTC in polling within
+ *      a short period of time.
+ *   o) Passing month boundaries
+ *      This is checked by setting RTC to a second before
+ *      a month boundary and reading it after its passing the
+ *      boundary. The test is performed for both leap- and
+ *      nonleap-years.
+ */
+
+#ifdef CONFIG_POST
+
+#include <post.h>
+#include <rtc.h>
+
+#if CONFIG_POST & CFG_POST_RTC
+
+static int rtc_post_skip (ulong * diff)
+{
+	struct rtc_time tm1;
+	struct rtc_time tm2;
+	ulong start1;
+	ulong start2;
+
+	rtc_get (&tm1);
+	start1 = get_timer (0);
+
+	while (1) {
+		rtc_get (&tm2);
+		start2 = get_timer (0);
+		if (tm1.tm_sec != tm2.tm_sec)
+			break;
+		if (start2 - start1 > 1500)
+			break;
+	}
+
+	if (tm1.tm_sec != tm2.tm_sec) {
+		*diff = start2 - start1;
+
+		return 0;
+	} else {
+		return -1;
+	}
+}
+
+static void rtc_post_restore (struct rtc_time *tm, unsigned int sec)
+{
+	time_t t = mktime (tm->tm_year, tm->tm_mon, tm->tm_mday, tm->tm_hour,
+					   tm->tm_min, tm->tm_sec) + sec;
+	struct rtc_time ntm;
+
+	to_tm (t, &ntm);
+
+	rtc_set (&ntm);
+}
+
+int rtc_post_test (int flags)
+{
+	ulong diff;
+	unsigned int i;
+	struct rtc_time svtm;
+	static unsigned int daysnl[] =
+			{ 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
+	static unsigned int daysl[] =
+			{ 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
+	unsigned int ynl = 1999;
+	unsigned int yl = 2000;
+	unsigned int skipped = 0;
+
+	/* Time uniformity */
+	if (rtc_post_skip (&diff) != 0) {
+		post_log ("Timeout while waiting for a new second !\n");
+
+		return -1;
+	}
+
+	for (i = 0; i < 5; i++) {
+		if (rtc_post_skip (&diff) != 0) {
+			post_log ("Timeout while waiting for a new second !\n");
+
+			return -1;
+		}
+
+		if (diff < 950 || diff > 1050) {
+			post_log ("Invalid second duration !\n");
+
+			return -1;
+		}
+	}
+
+	/* Passing month boundaries */
+
+	if (rtc_post_skip (&diff) != 0) {
+		post_log ("Timeout while waiting for a new second !\n");
+
+		return -1;
+	}
+	rtc_get (&svtm);
+
+	for (i = 0; i < 12; i++) {
+		time_t t = mktime (ynl, i + 1, daysnl[i], 23, 59, 59);
+		struct rtc_time tm;
+
+		to_tm (t, &tm);
+		rtc_set (&tm);
+
+		skipped++;
+		if (rtc_post_skip (&diff) != 0) {
+			rtc_post_restore (&svtm, skipped);
+			post_log ("Timeout while waiting for a new second !\n");
+
+			return -1;
+		}
+
+		rtc_get (&tm);
+		if (tm.tm_mon == i + 1) {
+			rtc_post_restore (&svtm, skipped);
+			post_log ("Month %d boundary is not passed !\n", i + 1);
+
+			return -1;
+		}
+	}
+
+	for (i = 0; i < 12; i++) {
+		time_t t = mktime (yl, i + 1, daysl[i], 23, 59, 59);
+		struct rtc_time tm;
+
+		to_tm (t, &tm);
+		rtc_set (&tm);
+
+		skipped++;
+		if (rtc_post_skip (&diff) != 0) {
+			rtc_post_restore (&svtm, skipped);
+			post_log ("Timeout while waiting for a new second !\n");
+
+			return -1;
+		}
+
+		rtc_get (&tm);
+		if (tm.tm_mon == i + 1) {
+			rtc_post_restore (&svtm, skipped);
+			post_log ("Month %d boundary is not passed !\n", i + 1);
+
+			return -1;
+		}
+	}
+	rtc_post_restore (&svtm, skipped);
+
+	return 0;
+}
+
+#endif /* CONFIG_POST & CFG_POST_RTC */
+#endif /* CONFIG_POST */