2 * Copyright (c) 1999, 2000
6 * Redistribution and use in source and binary forms, with or without
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18 * must display the following acknowledgement:
20 * This product includes software developed by Intel Corporation and
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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 && (((y) % 100) != 0 || ((y) % 400) == 0))
58 #define SECSPERHOUR ( 60*60 )
59 #define SECSPERDAY (24 * SECSPERHOUR)
62 efi_time(EFI_TIME *ETime)
65 // These arrays give the cumulative number of days up to the first of the
66 // month number used as the index (1 -> 12) for regular and leap years.
67 // The value at index 13 is for the whole year.
69 static time_t CumulativeDays[2][14] = {
76 31 + 28 + 31 + 30 + 31,
77 31 + 28 + 31 + 30 + 31 + 30,
78 31 + 28 + 31 + 30 + 31 + 30 + 31,
79 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31,
80 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30,
81 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31,
82 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30,
83 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30 + 31 },
90 31 + 29 + 31 + 30 + 31,
91 31 + 29 + 31 + 30 + 31 + 30,
92 31 + 29 + 31 + 30 + 31 + 30 + 31,
93 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31,
94 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30,
95 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31,
96 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30,
97 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30 + 31 }};
103 // Do a santity check
105 if ( ETime->Year < 1998 || ETime->Year > 2099 ||
106 ETime->Month == 0 || ETime->Month > 12 ||
107 ETime->Day == 0 || ETime->Month > 31 ||
109 ETime->Minute > 59 ||
110 ETime->Second > 59 ||
111 ETime->TimeZone < -1440 ||
112 (ETime->TimeZone > 1440 && ETime->TimeZone != 2047) ) {
120 for (Year = 1970; Year != ETime->Year; ++Year) {
121 UTime += (CumulativeDays[isleap(Year)][13] * SECSPERDAY);
125 // UTime should now be set to 00:00:00 on Jan 1 of the file's year.
129 UTime += (CumulativeDays[isleap(ETime->Year)][ETime->Month] * SECSPERDAY);
132 // UTime should now be set to 00:00:00 on the first of the file's month and year
134 // Days -- Don't count the file's day
136 UTime += (((ETime->Day > 0) ? ETime->Day-1:0) * SECSPERDAY);
141 UTime += (ETime->Hour * SECSPERHOUR);
146 UTime += (ETime->Minute * 60);
151 UTime += ETime->Second;
154 // EFI time is repored in local time. Adjust for any time zone offset to
157 if ( ETime->TimeZone != EFI_UNSPECIFIED_TIMEZONE ) {
159 // TimeZone is kept in minues...
161 UTime += (ETime->TimeZone * 60);
169 OUT struct timeval *tp,
170 OUT struct timezone *tzp
174 EFI_TIME_CAPABILITIES Capabilities;
181 Status = RS->GetTime(&EfiTime, &Capabilities);
182 if (EFI_ERROR(Status))
186 // Convert to UNIX time (ie seconds since the epoch
189 tp->tv_sec = efi_time( &EfiTime );
190 tp->tv_usec = 0; /* EfiTime.Nanosecond * 1000; */
193 // Do something with the timezone if needed
197 tzp->tz_minuteswest =
198 EfiTime.TimeZone == EFI_UNSPECIFIED_TIMEZONE ? 0 : EfiTime.TimeZone;
200 // This isn't quit right since it doesn't deal with EFI_TIME_IN_DAYLIGHT
203 EfiTime.Daylight & EFI_TIME_ADJUST_DAYLIGHT ? 1 : 0;
213 EFI_GetTimeOfDay(&tv, 0);