5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
29 * The Real Time Clock (RTC) operation is verified by this test.
30 * The following features are verified:
32 * This is verified by analyzing the rtc_get() return status.
34 * This is verified by reading RTC in polling within
35 * a short period of time.
36 * o) Passing month boundaries
37 * This is checked by setting RTC to a second before
38 * a month boundary and reading it after its passing the
39 * boundary. The test is performed for both leap- and
48 #if CONFIG_POST & CFG_POST_RTC
50 static int rtc_post_skip (ulong * diff)
58 start1 = get_timer (0);
62 start2 = get_timer (0);
63 if (tm1.tm_sec != tm2.tm_sec)
65 if (start2 - start1 > 1500)
69 if (tm1.tm_sec != tm2.tm_sec) {
70 *diff = start2 - start1;
78 static void rtc_post_restore (struct rtc_time *tm, unsigned int sec)
80 time_t t = mktime (tm->tm_year, tm->tm_mon, tm->tm_mday, tm->tm_hour,
81 tm->tm_min, tm->tm_sec) + sec;
89 int rtc_post_test (int flags)
94 static unsigned int daysnl[] =
95 { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
96 static unsigned int daysl[] =
97 { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
98 unsigned int ynl = 1999;
99 unsigned int yl = 2000;
100 unsigned int skipped = 0;
103 /* Time reliability */
104 reliable = rtc_get (&svtm);
106 /* Time uniformity */
107 if (rtc_post_skip (&diff) != 0) {
108 post_log ("Timeout while waiting for a new second !\n");
113 for (i = 0; i < 5; i++) {
114 if (rtc_post_skip (&diff) != 0) {
115 post_log ("Timeout while waiting for a new second !\n");
120 if (diff < 950 || diff > 1050) {
121 post_log ("Invalid second duration !\n");
127 /* Passing month boundaries */
129 if (rtc_post_skip (&diff) != 0) {
130 post_log ("Timeout while waiting for a new second !\n");
136 for (i = 0; i < 12; i++) {
137 time_t t = mktime (ynl, i + 1, daysnl[i], 23, 59, 59);
144 if (rtc_post_skip (&diff) != 0) {
145 rtc_post_restore (&svtm, skipped);
146 post_log ("Timeout while waiting for a new second !\n");
152 if (tm.tm_mon == i + 1) {
153 rtc_post_restore (&svtm, skipped);
154 post_log ("Month %d boundary is not passed !\n", i + 1);
160 for (i = 0; i < 12; i++) {
161 time_t t = mktime (yl, i + 1, daysl[i], 23, 59, 59);
168 if (rtc_post_skip (&diff) != 0) {
169 rtc_post_restore (&svtm, skipped);
170 post_log ("Timeout while waiting for a new second !\n");
176 if (tm.tm_mon == i + 1) {
177 rtc_post_restore (&svtm, skipped);
178 post_log ("Month %d boundary is not passed !\n", i + 1);
183 rtc_post_restore (&svtm, skipped);
185 /* If come here, then RTC operates correcty, check the correctness
186 * of the time it reports.
189 post_log ("RTC Time is not reliable! Power fault? \n");
197 #endif /* CONFIG_POST & CFG_POST_RTC */
198 #endif /* CONFIG_POST */