Wolfgang Denk | b38e0df | 2007-03-06 18:08:43 +0100 | [diff] [blame] | 1 | /* |
| 2 | * (C) Copyright 2002 |
| 3 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. |
| 4 | * |
| 5 | * See file CREDITS for list of people who contributed to this |
| 6 | * project. |
| 7 | * |
| 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. |
| 12 | * |
| 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. |
| 17 | * |
| 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, |
| 21 | * MA 02111-1307 USA |
| 22 | */ |
| 23 | |
| 24 | #include <common.h> |
| 25 | |
| 26 | /* |
| 27 | * RTC test |
| 28 | * |
| 29 | * The Real Time Clock (RTC) operation is verified by this test. |
| 30 | * The following features are verified: |
| 31 | * o) Time uniformity |
| 32 | * This is verified by reading RTC in polling within |
| 33 | * a short period of time. |
| 34 | * o) Passing month boundaries |
| 35 | * This is checked by setting RTC to a second before |
| 36 | * a month boundary and reading it after its passing the |
| 37 | * boundary. The test is performed for both leap- and |
| 38 | * nonleap-years. |
| 39 | */ |
| 40 | |
| 41 | #ifdef CONFIG_POST |
| 42 | |
| 43 | #include <post.h> |
| 44 | #include <rtc.h> |
| 45 | |
| 46 | #if CONFIG_POST & CFG_POST_RTC |
| 47 | |
| 48 | static int rtc_post_skip (ulong * diff) |
| 49 | { |
| 50 | struct rtc_time tm1; |
| 51 | struct rtc_time tm2; |
| 52 | ulong start1; |
| 53 | ulong start2; |
| 54 | |
| 55 | rtc_get (&tm1); |
| 56 | start1 = get_timer (0); |
| 57 | |
| 58 | while (1) { |
| 59 | rtc_get (&tm2); |
| 60 | start2 = get_timer (0); |
| 61 | if (tm1.tm_sec != tm2.tm_sec) |
| 62 | break; |
| 63 | if (start2 - start1 > 1500) |
| 64 | break; |
| 65 | } |
| 66 | |
| 67 | if (tm1.tm_sec != tm2.tm_sec) { |
| 68 | *diff = start2 - start1; |
| 69 | |
| 70 | return 0; |
| 71 | } else { |
| 72 | return -1; |
| 73 | } |
| 74 | } |
| 75 | |
| 76 | static void rtc_post_restore (struct rtc_time *tm, unsigned int sec) |
| 77 | { |
| 78 | time_t t = mktime (tm->tm_year, tm->tm_mon, tm->tm_mday, tm->tm_hour, |
| 79 | tm->tm_min, tm->tm_sec) + sec; |
| 80 | struct rtc_time ntm; |
| 81 | |
| 82 | to_tm (t, &ntm); |
| 83 | |
| 84 | rtc_set (&ntm); |
| 85 | } |
| 86 | |
| 87 | int rtc_post_test (int flags) |
| 88 | { |
| 89 | ulong diff; |
| 90 | unsigned int i; |
| 91 | struct rtc_time svtm; |
| 92 | static unsigned int daysnl[] = |
| 93 | { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }; |
| 94 | static unsigned int daysl[] = |
| 95 | { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }; |
| 96 | unsigned int ynl = 1999; |
| 97 | unsigned int yl = 2000; |
| 98 | unsigned int skipped = 0; |
| 99 | |
| 100 | /* Time uniformity */ |
| 101 | if (rtc_post_skip (&diff) != 0) { |
| 102 | post_log ("Timeout while waiting for a new second !\n"); |
| 103 | |
| 104 | return -1; |
| 105 | } |
| 106 | |
| 107 | for (i = 0; i < 5; i++) { |
| 108 | if (rtc_post_skip (&diff) != 0) { |
| 109 | post_log ("Timeout while waiting for a new second !\n"); |
| 110 | |
| 111 | return -1; |
| 112 | } |
| 113 | |
| 114 | if (diff < 950 || diff > 1050) { |
| 115 | post_log ("Invalid second duration !\n"); |
| 116 | |
| 117 | return -1; |
| 118 | } |
| 119 | } |
| 120 | |
| 121 | /* Passing month boundaries */ |
| 122 | |
| 123 | if (rtc_post_skip (&diff) != 0) { |
| 124 | post_log ("Timeout while waiting for a new second !\n"); |
| 125 | |
| 126 | return -1; |
| 127 | } |
| 128 | rtc_get (&svtm); |
| 129 | |
| 130 | for (i = 0; i < 12; i++) { |
| 131 | time_t t = mktime (ynl, i + 1, daysnl[i], 23, 59, 59); |
| 132 | struct rtc_time tm; |
| 133 | |
| 134 | to_tm (t, &tm); |
| 135 | rtc_set (&tm); |
| 136 | |
| 137 | skipped++; |
| 138 | if (rtc_post_skip (&diff) != 0) { |
| 139 | rtc_post_restore (&svtm, skipped); |
| 140 | post_log ("Timeout while waiting for a new second !\n"); |
| 141 | |
| 142 | return -1; |
| 143 | } |
| 144 | |
| 145 | rtc_get (&tm); |
| 146 | if (tm.tm_mon == i + 1) { |
| 147 | rtc_post_restore (&svtm, skipped); |
| 148 | post_log ("Month %d boundary is not passed !\n", i + 1); |
| 149 | |
| 150 | return -1; |
| 151 | } |
| 152 | } |
| 153 | |
| 154 | for (i = 0; i < 12; i++) { |
| 155 | time_t t = mktime (yl, i + 1, daysl[i], 23, 59, 59); |
| 156 | struct rtc_time tm; |
| 157 | |
| 158 | to_tm (t, &tm); |
| 159 | rtc_set (&tm); |
| 160 | |
| 161 | skipped++; |
| 162 | if (rtc_post_skip (&diff) != 0) { |
| 163 | rtc_post_restore (&svtm, skipped); |
| 164 | post_log ("Timeout while waiting for a new second !\n"); |
| 165 | |
| 166 | return -1; |
| 167 | } |
| 168 | |
| 169 | rtc_get (&tm); |
| 170 | if (tm.tm_mon == i + 1) { |
| 171 | rtc_post_restore (&svtm, skipped); |
| 172 | post_log ("Month %d boundary is not passed !\n", i + 1); |
| 173 | |
| 174 | return -1; |
| 175 | } |
| 176 | } |
| 177 | rtc_post_restore (&svtm, skipped); |
| 178 | |
| 179 | return 0; |
| 180 | } |
| 181 | |
| 182 | #endif /* CONFIG_POST & CFG_POST_RTC */ |
| 183 | #endif /* CONFIG_POST */ |