76 lines
2.1 KiB
C
76 lines
2.1 KiB
C
/*
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* Copyright (C) 2015 Michael Brown <mbrown@fensystems.co.uk>.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*
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* You can also choose to distribute this program under the terms of
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* the Unmodified Binary Distribution Licence (as given in the file
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* COPYING.UBDL), provided that you have satisfied its requirements.
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*/
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FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
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#include <string.h>
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#include <errno.h>
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#include <time.h>
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#include <ipxe/time.h>
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#include <ipxe/efi/efi.h>
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/** @file
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*
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* EFI time source
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*
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*/
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/**
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* Get current time in seconds
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*
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* @ret time Time, in seconds
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*/
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static time_t efi_get_time ( void ) {
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EFI_RUNTIME_SERVICES *rs = efi_systab->RuntimeServices;
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EFI_TIME time;
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struct tm tm;
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EFI_STATUS efirc;
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int rc;
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/* Get current time and date */
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if ( ( efirc = rs->GetTime ( &time, NULL ) ) != 0 ) {
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rc = -EEFI ( efirc );
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DBGC ( rs, "EFITIME could not get system time: %s\n",
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strerror ( rc ) );
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/* Nothing meaningful we can return */
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return 0;
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}
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/* Construct broken-down time */
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memset ( &tm, 0, sizeof ( tm ) );
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tm.tm_sec = time.Second;
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tm.tm_min = time.Minute;
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tm.tm_hour = time.Hour;
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tm.tm_mday = time.Day;
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tm.tm_mon = ( time.Month - 1 );
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tm.tm_year = ( time.Year - 1900 );
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DBGC ( rs, "EFITIME is %04d-%02d-%02d %02d:%02d:%02d\n",
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( tm.tm_year + 1900 ), ( tm.tm_mon + 1 ),
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tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec );
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/* Convert to seconds since the Epoch */
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return mktime ( &tm );
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}
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PROVIDE_TIME ( efi, time_now, efi_get_time );
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