/*-
* 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 <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <efi.h>
#include <efilib.h>
#include <time.h>
#include <sys/time.h>
/*
* 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));
}