2 * Copyright (c) 1999, 2000
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * 3. All advertising materials mentioning features or use of this software
18 * must display the following acknowledgement:
20 * This product includes software developed by Intel Corporation and
23 * 4. Neither the name of Intel Corporation or its contributors may be
24 * used to endorse or promote products derived from this software
25 * without specific prior written permission.
27 * THIS SOFTWARE IS PROVIDED BY INTEL CORPORATION AND CONTRIBUTORS ``AS IS''
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41 #include <sys/cdefs.h>
42 __FBSDID("$FreeBSD$");
51 * Accurate only for the past couple of centuries;
52 * that will probably do.
54 * (#defines From FreeBSD 3.2 lib/libc/stdtime/tzfile.h)
57 #define isleap(y) (((y) % 4) == 0 && \
58 (((y) % 100) != 0 || ((y) % 400) == 0))
59 #define SECSPERHOUR (60*60)
60 #define SECSPERDAY (24 * SECSPERHOUR)
63 * These arrays give the cumulative number of days up to the first of the
64 * month number used as the index (1 -> 12) for regular and leap years.
65 * The value at index 13 is for the whole year.
67 static const time_t CumulativeDays[2][14] = {
74 31 + 28 + 31 + 30 + 31,
75 31 + 28 + 31 + 30 + 31 + 30,
76 31 + 28 + 31 + 30 + 31 + 30 + 31,
77 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31,
78 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30,
79 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31,
80 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30,
81 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30 + 31 },
88 31 + 29 + 31 + 30 + 31,
89 31 + 29 + 31 + 30 + 31 + 30,
90 31 + 29 + 31 + 30 + 31 + 30 + 31,
91 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31,
92 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30,
93 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31,
94 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30,
95 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30 + 31 }};
108 to_efi_time(EFI_TIME *efi_time, time_t time)
114 efi_time->Year = 1970;
115 lyear = isleap(efi_time->Year);
117 seconds = CumulativeDays[lyear][month] * SECSPERDAY;
118 while (time > seconds) {
121 lyear = isleap(efi_time->Year);
122 seconds = CumulativeDays[lyear][month] * SECSPERDAY;
127 CumulativeDays[lyear][month] * SECSPERDAY) {
131 month = efi_time->Month - 1;
132 time -= CumulativeDays[lyear][month] * SECSPERDAY;
134 for (efi_time->Day = 0; time > SECSPERDAY; efi_time->Day++)
137 for (efi_time->Hour = 0; time > SECSPERHOUR; efi_time->Hour++)
140 for (efi_time->Minute = 0; time > 60; efi_time->Minute++)
143 efi_time->Second = time;
144 efi_time->Nanosecond = 0;
145 efi_time->TimeZone = 0;
146 efi_time->Daylight = 0;
148 memset(efi_time, 0, sizeof(EFI_TIME));
153 from_efi_time(EFI_TIME *ETime)
161 if (ETime->Year < 1998 || ETime->Year > 2099 ||
162 ETime->Month == 0 || ETime->Month > 12 ||
163 ETime->Day == 0 || ETime->Month > 31 ||
164 ETime->Hour > 23 || ETime->Minute > 59 ||
165 ETime->Second > 59 || ETime->TimeZone < -1440 ||
166 (ETime->TimeZone > 1440 && ETime->TimeZone != 2047)) {
174 for (Year = 1970; Year != ETime->Year; ++Year) {
175 UTime += (CumulativeDays[isleap(Year)][13] * SECSPERDAY);
179 * UTime should now be set to 00:00:00 on Jan 1 of the file's year.
183 UTime += (CumulativeDays[isleap(ETime->Year)][ETime->Month] *
187 * UTime should now be set to 00:00:00 on the first of the file's
190 * Days -- Don't count the file's day
192 UTime += (((ETime->Day > 0) ? ETime->Day-1:0) * SECSPERDAY);
197 UTime += (ETime->Hour * SECSPERHOUR);
202 UTime += (ETime->Minute * 60);
207 UTime += ETime->Second;
210 * EFI time is repored in local time. Adjust for any time zone
211 * offset to get true UT
213 if (ETime->TimeZone != EFI_UNSPECIFIED_TIMEZONE) {
215 * TimeZone is kept in minues...
217 UTime += (ETime->TimeZone * 60);
224 EFI_GetTimeOfDay(OUT struct timeval *tp, OUT struct timezone *tzp)
227 EFI_TIME_CAPABILITIES Capabilities;
234 Status = RS->GetTime(&EfiTime, &Capabilities);
235 if (EFI_ERROR(Status))
239 * Convert to UNIX time (ie seconds since the epoch
242 tp->tv_sec = from_efi_time(&EfiTime);
243 tp->tv_usec = 0; /* EfiTime.Nanosecond * 1000; */
246 * Do something with the timezone if needed
250 if (EfiTime.TimeZone == EFI_UNSPECIFIED_TIMEZONE)
251 tzp->tz_minuteswest = 0;
253 tzp->tz_minuteswest = EfiTime.TimeZone;
255 * This isn't quit right since it doesn't deal with
256 * EFI_TIME_IN_DAYLIGHT
259 EfiTime.Daylight & EFI_TIME_ADJUST_DAYLIGHT ? 1 : 0;
270 memset(&tv, 0, sizeof(tv));
271 EFI_GetTimeOfDay(&tv, NULL);