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ad5bb451 WD |
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 | ||
ad5bb451 WD |
41 | #include <post.h> |
42 | #include <rtc.h> | |
43 | ||
44 | #if CONFIG_POST & CFG_POST_RTC | |
45 | ||
46 | static int rtc_post_skip (ulong * diff) | |
47 | { | |
48 | struct rtc_time tm1; | |
49 | struct rtc_time tm2; | |
50 | ulong start1; | |
51 | ulong start2; | |
52 | ||
53 | rtc_get (&tm1); | |
54 | start1 = get_timer (0); | |
55 | ||
56 | while (1) { | |
57 | rtc_get (&tm2); | |
58 | start2 = get_timer (0); | |
59 | if (tm1.tm_sec != tm2.tm_sec) | |
60 | break; | |
61 | if (start2 - start1 > 1500) | |
62 | break; | |
63 | } | |
64 | ||
65 | if (tm1.tm_sec != tm2.tm_sec) { | |
66 | *diff = start2 - start1; | |
67 | ||
68 | return 0; | |
69 | } else { | |
70 | return -1; | |
71 | } | |
72 | } | |
73 | ||
74 | static void rtc_post_restore (struct rtc_time *tm, unsigned int sec) | |
75 | { | |
76 | time_t t = mktime (tm->tm_year, tm->tm_mon, tm->tm_mday, tm->tm_hour, | |
77 | tm->tm_min, tm->tm_sec) + sec; | |
78 | struct rtc_time ntm; | |
79 | ||
80 | to_tm (t, &ntm); | |
81 | ||
82 | rtc_set (&ntm); | |
83 | } | |
84 | ||
85 | int rtc_post_test (int flags) | |
86 | { | |
87 | ulong diff; | |
88 | unsigned int i; | |
89 | struct rtc_time svtm; | |
90 | static unsigned int daysnl[] = | |
91 | { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }; | |
92 | static unsigned int daysl[] = | |
93 | { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }; | |
94 | unsigned int ynl = 1999; | |
95 | unsigned int yl = 2000; | |
96 | unsigned int skipped = 0; | |
97 | ||
98 | /* Time uniformity */ | |
99 | if (rtc_post_skip (&diff) != 0) { | |
100 | post_log ("Timeout while waiting for a new second !\n"); | |
101 | ||
102 | return -1; | |
103 | } | |
104 | ||
105 | for (i = 0; i < 5; i++) { | |
106 | if (rtc_post_skip (&diff) != 0) { | |
107 | post_log ("Timeout while waiting for a new second !\n"); | |
108 | ||
109 | return -1; | |
110 | } | |
111 | ||
112 | if (diff < 950 || diff > 1050) { | |
113 | post_log ("Invalid second duration !\n"); | |
114 | ||
115 | return -1; | |
116 | } | |
117 | } | |
118 | ||
119 | /* Passing month boundaries */ | |
120 | ||
121 | if (rtc_post_skip (&diff) != 0) { | |
122 | post_log ("Timeout while waiting for a new second !\n"); | |
123 | ||
124 | return -1; | |
125 | } | |
126 | rtc_get (&svtm); | |
127 | ||
128 | for (i = 0; i < 12; i++) { | |
129 | time_t t = mktime (ynl, i + 1, daysnl[i], 23, 59, 59); | |
130 | struct rtc_time tm; | |
131 | ||
132 | to_tm (t, &tm); | |
133 | rtc_set (&tm); | |
134 | ||
135 | skipped++; | |
136 | if (rtc_post_skip (&diff) != 0) { | |
137 | rtc_post_restore (&svtm, skipped); | |
138 | post_log ("Timeout while waiting for a new second !\n"); | |
139 | ||
140 | return -1; | |
141 | } | |
142 | ||
143 | rtc_get (&tm); | |
144 | if (tm.tm_mon == i + 1) { | |
145 | rtc_post_restore (&svtm, skipped); | |
146 | post_log ("Month %d boundary is not passed !\n", i + 1); | |
147 | ||
148 | return -1; | |
149 | } | |
150 | } | |
151 | ||
152 | for (i = 0; i < 12; i++) { | |
153 | time_t t = mktime (yl, i + 1, daysl[i], 23, 59, 59); | |
154 | struct rtc_time tm; | |
155 | ||
156 | to_tm (t, &tm); | |
157 | rtc_set (&tm); | |
158 | ||
159 | skipped++; | |
160 | if (rtc_post_skip (&diff) != 0) { | |
161 | rtc_post_restore (&svtm, skipped); | |
162 | post_log ("Timeout while waiting for a new second !\n"); | |
163 | ||
164 | return -1; | |
165 | } | |
166 | ||
167 | rtc_get (&tm); | |
168 | if (tm.tm_mon == i + 1) { | |
169 | rtc_post_restore (&svtm, skipped); | |
170 | post_log ("Month %d boundary is not passed !\n", i + 1); | |
171 | ||
172 | return -1; | |
173 | } | |
174 | } | |
175 | rtc_post_restore (&svtm, skipped); | |
176 | ||
177 | return 0; | |
178 | } | |
179 | ||
180 | #endif /* CONFIG_POST & CFG_POST_RTC */ |