9ef7e5e3af
1. Make libefi portable by removing ia64 specific code and build it on i386 and amd64 by default to prevent regressions. These changes include fixes and improvements over previous code to establish or improve APIs where none existed or when the amount of kluging was unacceptably high. 2. Increase the amount of sharing between the efi and ski loaders to improve maintainability of the loaders and simplify making changes to the loader-kernel handshaking in the future. The version of the efi and ski loaders are now both changed to 1.2 as user visible improvements and changes have been made.
225 lines
5.9 KiB
C
225 lines
5.9 KiB
C
/*-
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* Copyright (c) 1999, 2000
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* Intel Corporation.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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*
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* This product includes software developed by Intel Corporation and
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* its contributors.
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*
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* 4. Neither the name of Intel Corporation or its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY INTEL CORPORATION AND CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL INTEL CORPORATION OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <efi.h>
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#include <efilib.h>
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#include <time.h>
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#include <sys/time.h>
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/*
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// Accurate only for the past couple of centuries;
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// that will probably do.
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//
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// (#defines From FreeBSD 3.2 lib/libc/stdtime/tzfile.h)
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*/
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#define isleap(y) (((y) % 4) == 0 && (((y) % 100) != 0 || ((y) % 400) == 0))
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#define SECSPERHOUR ( 60*60 )
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#define SECSPERDAY (24 * SECSPERHOUR)
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time_t
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efi_time(EFI_TIME *ETime)
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{
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/*
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// These arrays give the cumulative number of days up to the first of the
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// month number used as the index (1 -> 12) for regular and leap years.
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// The value at index 13 is for the whole year.
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*/
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static time_t CumulativeDays[2][14] = {
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{0,
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0,
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31,
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31 + 28,
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31 + 28 + 31,
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31 + 28 + 31 + 30,
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31 + 28 + 31 + 30 + 31,
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31 + 28 + 31 + 30 + 31 + 30,
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31 + 28 + 31 + 30 + 31 + 30 + 31,
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31 + 28 + 31 + 30 + 31 + 30 + 31 + 31,
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31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30,
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31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31,
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31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30,
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31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30 + 31 },
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{0,
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0,
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31,
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31 + 29,
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31 + 29 + 31,
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31 + 29 + 31 + 30,
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31 + 29 + 31 + 30 + 31,
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31 + 29 + 31 + 30 + 31 + 30,
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31 + 29 + 31 + 30 + 31 + 30 + 31,
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31 + 29 + 31 + 30 + 31 + 30 + 31 + 31,
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31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30,
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31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31,
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31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30,
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31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30 + 31 }};
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time_t UTime;
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int Year;
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/*
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// Do a santity check
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*/
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if ( ETime->Year < 1998 || ETime->Year > 2099 ||
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ETime->Month == 0 || ETime->Month > 12 ||
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ETime->Day == 0 || ETime->Month > 31 ||
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ETime->Hour > 23 ||
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ETime->Minute > 59 ||
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ETime->Second > 59 ||
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ETime->TimeZone < -1440 ||
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(ETime->TimeZone > 1440 && ETime->TimeZone != 2047) ) {
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return (0);
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}
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/*
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// Years
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*/
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UTime = 0;
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for (Year = 1970; Year != ETime->Year; ++Year) {
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UTime += (CumulativeDays[isleap(Year)][13] * SECSPERDAY);
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}
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/*
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// UTime should now be set to 00:00:00 on Jan 1 of the file's year.
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//
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// Months
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*/
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UTime += (CumulativeDays[isleap(ETime->Year)][ETime->Month] * SECSPERDAY);
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/*
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// UTime should now be set to 00:00:00 on the first of the file's month and year
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//
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// Days -- Don't count the file's day
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*/
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UTime += (((ETime->Day > 0) ? ETime->Day-1:0) * SECSPERDAY);
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/*
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// Hours
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*/
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UTime += (ETime->Hour * SECSPERHOUR);
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/*
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// Minutes
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*/
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UTime += (ETime->Minute * 60);
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/*
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// Seconds
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*/
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UTime += ETime->Second;
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/*
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// EFI time is repored in local time. Adjust for any time zone offset to
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// get true UT
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*/
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if ( ETime->TimeZone != EFI_UNSPECIFIED_TIMEZONE ) {
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/*
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// TimeZone is kept in minues...
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*/
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UTime += (ETime->TimeZone * 60);
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}
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return UTime;
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}
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int
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EFI_GetTimeOfDay(
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OUT struct timeval *tp,
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OUT struct timezone *tzp
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)
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{
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EFI_TIME EfiTime;
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EFI_TIME_CAPABILITIES Capabilities;
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EFI_STATUS Status;
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/*
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// Get time from EFI
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*/
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Status = RS->GetTime(&EfiTime, &Capabilities);
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if (EFI_ERROR(Status))
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return (-1);
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/*
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// Convert to UNIX time (ie seconds since the epoch
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*/
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tp->tv_sec = efi_time( &EfiTime );
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tp->tv_usec = 0; /* EfiTime.Nanosecond * 1000; */
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/*
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// Do something with the timezone if needed
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*/
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if (tzp) {
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tzp->tz_minuteswest =
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EfiTime.TimeZone == EFI_UNSPECIFIED_TIMEZONE ? 0 : EfiTime.TimeZone;
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/*
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// This isn't quit right since it doesn't deal with EFI_TIME_IN_DAYLIGHT
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*/
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tzp->tz_dsttime =
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EfiTime.Daylight & EFI_TIME_ADJUST_DAYLIGHT ? 1 : 0;
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}
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return (0);
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}
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time_t
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time(time_t *tloc)
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{
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struct timeval tv;
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EFI_GetTimeOfDay(&tv, 0);
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if (tloc)
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*tloc = tv.tv_sec;
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return tv.tv_sec;
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}
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time_t
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getsecs()
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{
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return time(0);
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}
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