]>
Commit | Line | Data |
---|---|---|
ad5bb451 WD |
1 | /* |
2 | * (C) Copyright 2002 | |
3 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. | |
4 | * | |
1a459660 | 5 | * SPDX-License-Identifier: GPL-2.0+ |
ad5bb451 WD |
6 | */ |
7 | ||
8 | #include <common.h> | |
9 | ||
10 | /* | |
11 | * RTC test | |
12 | * | |
13 | * The Real Time Clock (RTC) operation is verified by this test. | |
14 | * The following features are verified: | |
b73a19e1 YT |
15 | * o) RTC Power Fault |
16 | * This is verified by analyzing the rtc_get() return status. | |
ad5bb451 WD |
17 | * o) Time uniformity |
18 | * This is verified by reading RTC in polling within | |
19 | * a short period of time. | |
20 | * o) Passing month boundaries | |
21 | * This is checked by setting RTC to a second before | |
22 | * a month boundary and reading it after its passing the | |
23 | * boundary. The test is performed for both leap- and | |
24 | * nonleap-years. | |
25 | */ | |
26 | ||
ad5bb451 WD |
27 | #include <post.h> |
28 | #include <rtc.h> | |
29 | ||
6d0f6bcf | 30 | #if CONFIG_POST & CONFIG_SYS_POST_RTC |
ad5bb451 WD |
31 | |
32 | static int rtc_post_skip (ulong * diff) | |
33 | { | |
34 | struct rtc_time tm1; | |
35 | struct rtc_time tm2; | |
36 | ulong start1; | |
37 | ulong start2; | |
38 | ||
39 | rtc_get (&tm1); | |
40 | start1 = get_timer (0); | |
41 | ||
42 | while (1) { | |
43 | rtc_get (&tm2); | |
44 | start2 = get_timer (0); | |
45 | if (tm1.tm_sec != tm2.tm_sec) | |
46 | break; | |
47 | if (start2 - start1 > 1500) | |
48 | break; | |
49 | } | |
50 | ||
51 | if (tm1.tm_sec != tm2.tm_sec) { | |
52 | *diff = start2 - start1; | |
53 | ||
54 | return 0; | |
55 | } else { | |
56 | return -1; | |
57 | } | |
58 | } | |
59 | ||
60 | static void rtc_post_restore (struct rtc_time *tm, unsigned int sec) | |
61 | { | |
71420983 | 62 | time_t t = rtc_mktime(tm) + sec; |
ad5bb451 WD |
63 | struct rtc_time ntm; |
64 | ||
9f9276c3 | 65 | rtc_to_tm(t, &ntm); |
ad5bb451 WD |
66 | |
67 | rtc_set (&ntm); | |
68 | } | |
69 | ||
70 | int rtc_post_test (int flags) | |
71 | { | |
72 | ulong diff; | |
73 | unsigned int i; | |
74 | struct rtc_time svtm; | |
75 | static unsigned int daysnl[] = | |
76 | { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }; | |
77 | static unsigned int daysl[] = | |
78 | { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }; | |
79 | unsigned int ynl = 1999; | |
80 | unsigned int yl = 2000; | |
81 | unsigned int skipped = 0; | |
b73a19e1 YT |
82 | int reliable; |
83 | ||
84 | /* Time reliability */ | |
85 | reliable = rtc_get (&svtm); | |
ad5bb451 WD |
86 | |
87 | /* Time uniformity */ | |
88 | if (rtc_post_skip (&diff) != 0) { | |
89 | post_log ("Timeout while waiting for a new second !\n"); | |
90 | ||
91 | return -1; | |
92 | } | |
93 | ||
94 | for (i = 0; i < 5; i++) { | |
95 | if (rtc_post_skip (&diff) != 0) { | |
96 | post_log ("Timeout while waiting for a new second !\n"); | |
97 | ||
98 | return -1; | |
99 | } | |
100 | ||
101 | if (diff < 950 || diff > 1050) { | |
102 | post_log ("Invalid second duration !\n"); | |
103 | ||
104 | return -1; | |
105 | } | |
106 | } | |
107 | ||
108 | /* Passing month boundaries */ | |
109 | ||
110 | if (rtc_post_skip (&diff) != 0) { | |
111 | post_log ("Timeout while waiting for a new second !\n"); | |
112 | ||
113 | return -1; | |
114 | } | |
115 | rtc_get (&svtm); | |
116 | ||
117 | for (i = 0; i < 12; i++) { | |
71420983 | 118 | time_t t; |
ad5bb451 WD |
119 | struct rtc_time tm; |
120 | ||
71420983 SG |
121 | tm.tm_year = ynl; |
122 | tm.tm_mon = i + 1; | |
123 | tm.tm_mday = daysnl[i]; | |
124 | tm.tm_hour = 23; | |
125 | tm.tm_min = 59; | |
126 | tm.tm_sec = 59; | |
127 | t = rtc_mktime(&tm); | |
9f9276c3 | 128 | rtc_to_tm(t, &tm); |
ad5bb451 WD |
129 | rtc_set (&tm); |
130 | ||
131 | skipped++; | |
132 | if (rtc_post_skip (&diff) != 0) { | |
133 | rtc_post_restore (&svtm, skipped); | |
134 | post_log ("Timeout while waiting for a new second !\n"); | |
135 | ||
136 | return -1; | |
137 | } | |
138 | ||
139 | rtc_get (&tm); | |
140 | if (tm.tm_mon == i + 1) { | |
141 | rtc_post_restore (&svtm, skipped); | |
142 | post_log ("Month %d boundary is not passed !\n", i + 1); | |
143 | ||
144 | return -1; | |
145 | } | |
146 | } | |
147 | ||
148 | for (i = 0; i < 12; i++) { | |
71420983 | 149 | time_t t; |
ad5bb451 WD |
150 | struct rtc_time tm; |
151 | ||
71420983 SG |
152 | tm.tm_year = yl; |
153 | tm.tm_mon = i + 1; | |
154 | tm.tm_mday = daysl[i]; | |
155 | tm.tm_hour = 23; | |
156 | tm.tm_min = 59; | |
157 | tm.tm_sec = 59; | |
158 | t = rtc_mktime(&tm); | |
159 | ||
9f9276c3 | 160 | rtc_to_tm(t, &tm); |
ad5bb451 WD |
161 | rtc_set (&tm); |
162 | ||
163 | skipped++; | |
164 | if (rtc_post_skip (&diff) != 0) { | |
165 | rtc_post_restore (&svtm, skipped); | |
166 | post_log ("Timeout while waiting for a new second !\n"); | |
167 | ||
168 | return -1; | |
169 | } | |
170 | ||
171 | rtc_get (&tm); | |
172 | if (tm.tm_mon == i + 1) { | |
173 | rtc_post_restore (&svtm, skipped); | |
174 | post_log ("Month %d boundary is not passed !\n", i + 1); | |
175 | ||
176 | return -1; | |
177 | } | |
178 | } | |
179 | rtc_post_restore (&svtm, skipped); | |
180 | ||
b73a19e1 YT |
181 | /* If come here, then RTC operates correcty, check the correctness |
182 | * of the time it reports. | |
183 | */ | |
184 | if (reliable < 0) { | |
185 | post_log ("RTC Time is not reliable! Power fault? \n"); | |
186 | ||
187 | return -1; | |
188 | } | |
189 | ||
ad5bb451 WD |
190 | return 0; |
191 | } | |
192 | ||
6d0f6bcf | 193 | #endif /* CONFIG_POST & CONFIG_SYS_POST_RTC */ |