/*- * Copyright (c) 1999, 2000 * Intel Corporation. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * * This product includes software developed by Intel Corporation and * its contributors. * * 4. Neither the name of Intel Corporation or its contributors may be * used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY INTEL CORPORATION AND CONTRIBUTORS ``AS IS'' * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL INTEL CORPORATION OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF * THE POSSIBILITY OF SUCH DAMAGE. * */ #include #include #include #include #include /* * Accurate only for the past couple of centuries; * that will probably do. * * (#defines From FreeBSD 3.2 lib/libc/stdtime/tzfile.h) */ #define isleap(y) (((y) % 4) == 0 && \ (((y) % 100) != 0 || ((y) % 400) == 0)) #define SECSPERHOUR (60*60) #define SECSPERDAY (24 * SECSPERHOUR) /* * These arrays give the cumulative number of days up to the first of the * month number used as the index (1 -> 12) for regular and leap years. * The value at index 13 is for the whole year. */ static const time_t CumulativeDays[2][14] = { {0, 0, 31, 31 + 28, 31 + 28 + 31, 31 + 28 + 31 + 30, 31 + 28 + 31 + 30 + 31, 31 + 28 + 31 + 30 + 31 + 30, 31 + 28 + 31 + 30 + 31 + 30 + 31, 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31, 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30, 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31, 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30, 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30 + 31 }, {0, 0, 31, 31 + 29, 31 + 29 + 31, 31 + 29 + 31 + 30, 31 + 29 + 31 + 30 + 31, 31 + 29 + 31 + 30 + 31 + 30, 31 + 29 + 31 + 30 + 31 + 30 + 31, 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31, 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30, 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31, 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30, 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30 + 31 }}; void efi_time_init(void) { } void efi_time_fini(void) { } void to_efi_time(EFI_TIME *efi_time, time_t time) { int lyear, month; time_t seconds; if (time >= 0) { efi_time->Year = 1970; lyear = isleap(efi_time->Year); month = 13; seconds = CumulativeDays[lyear][month] * SECSPERDAY; while (time > seconds) { time -= seconds; efi_time->Year++; lyear = isleap(efi_time->Year); seconds = CumulativeDays[lyear][month] * SECSPERDAY; } efi_time->Month = 0; while (time > CumulativeDays[lyear][month] * SECSPERDAY) { efi_time->Month++; } month = efi_time->Month - 1; time -= CumulativeDays[lyear][month] * SECSPERDAY; for (efi_time->Day = 0; time > SECSPERDAY; efi_time->Day++) time -= SECSPERDAY; for (efi_time->Hour = 0; time > SECSPERHOUR; efi_time->Hour++) time -= SECSPERHOUR; for (efi_time->Minute = 0; time > 60; efi_time->Minute++) time -= 60; efi_time->Second = time; efi_time->Nanosecond = 0; efi_time->TimeZone = 0; efi_time->Daylight = 0; } else { memset(efi_time, 0, sizeof(EFI_TIME)); } } time_t from_efi_time(EFI_TIME *ETime) { time_t UTime; int Year; /* * Do a santity check */ if (ETime->Year < 1998 || ETime->Year > 2099 || ETime->Month == 0 || ETime->Month > 12 || ETime->Day == 0 || ETime->Month > 31 || ETime->Hour > 23 || ETime->Minute > 59 || ETime->Second > 59 || ETime->TimeZone < -1440 || (ETime->TimeZone > 1440 && ETime->TimeZone != 2047)) { return (0); } /* * Years */ UTime = 0; for (Year = 1970; Year != ETime->Year; ++Year) { UTime += (CumulativeDays[isleap(Year)][13] * SECSPERDAY); } /* * UTime should now be set to 00:00:00 on Jan 1 of the file's year. * * Months */ UTime += (CumulativeDays[isleap(ETime->Year)][ETime->Month] * SECSPERDAY); /* * UTime should now be set to 00:00:00 on the first of the file's * month and year. * * Days -- Don't count the file's day */ UTime += (((ETime->Day > 0) ? ETime->Day-1:0) * SECSPERDAY); /* * Hours */ UTime += (ETime->Hour * SECSPERHOUR); /* * Minutes */ UTime += (ETime->Minute * 60); /* * Seconds */ UTime += ETime->Second; /* * EFI time is repored in local time. Adjust for any time zone * offset to get true UT */ if (ETime->TimeZone != EFI_UNSPECIFIED_TIMEZONE) { /* * TimeZone is kept in minues... */ UTime += (ETime->TimeZone * 60); } return (UTime); } static int EFI_GetTimeOfDay(OUT struct timeval *tp, OUT struct timezone *tzp) { EFI_TIME EfiTime; EFI_TIME_CAPABILITIES Capabilities; EFI_STATUS Status; /* * Get time from EFI */ Status = RS->GetTime(&EfiTime, &Capabilities); if (EFI_ERROR(Status)) return (-1); /* * Convert to UNIX time (ie seconds since the epoch */ tp->tv_sec = from_efi_time(&EfiTime); tp->tv_usec = 0; /* EfiTime.Nanosecond * 1000; */ /* * Do something with the timezone if needed */ if (tzp != NULL) { if (EfiTime.TimeZone == EFI_UNSPECIFIED_TIMEZONE) tzp->tz_minuteswest = 0; else tzp->tz_minuteswest = EfiTime.TimeZone; /* * This isn't quit right since it doesn't deal with * EFI_TIME_IN_DAYLIGHT */ tzp->tz_dsttime = EfiTime.Daylight & EFI_TIME_ADJUST_DAYLIGHT ? 1 : 0; } return (0); } time_t time(time_t *tloc) { struct timeval tv; memset(&tv, 0, sizeof(tv)); EFI_GetTimeOfDay(&tv, NULL); if (tloc) *tloc = tv.tv_sec; return (tv.tv_sec); } time_t getsecs(void) { return (time(NULL)); }