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Signed-off-by: Michael Brown <mcb30@ipxe.org>
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#ifndef _IPXE_EFI_TIME_H | ||
#define _IPXE_EFI_TIME_H | ||
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/** @file | ||
* | ||
* EFI time source | ||
* | ||
*/ | ||
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FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); | ||
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#include <stdint.h> | ||
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#ifdef TIME_EFI | ||
#define TIME_PREFIX_efi | ||
#else | ||
#define TIME_PREFIX_efi __efi_ | ||
#endif | ||
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#endif /* _IPXE_EFI_TIME_H */ |
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/* | ||
* Copyright (C) 2015 Michael Brown <mbrown@fensystems.co.uk>. | ||
* | ||
* This program is free software; you can redistribute it and/or | ||
* modify it under the terms of the GNU General Public License as | ||
* published by the Free Software Foundation; either version 2 of the | ||
* License, or (at your option) any later version. | ||
* | ||
* This program is distributed in the hope that it will be useful, but | ||
* WITHOUT ANY WARRANTY; without even the implied warranty of | ||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
* General Public License for more details. | ||
* | ||
* You should have received a copy of the GNU General Public License | ||
* along with this program; if not, write to the Free Software | ||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA | ||
* 02110-1301, USA. | ||
* | ||
* You can also choose to distribute this program under the terms of | ||
* the Unmodified Binary Distribution Licence (as given in the file | ||
* COPYING.UBDL), provided that you have satisfied its requirements. | ||
*/ | ||
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FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); | ||
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#include <string.h> | ||
#include <errno.h> | ||
#include <time.h> | ||
#include <ipxe/time.h> | ||
#include <ipxe/efi/efi.h> | ||
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/** @file | ||
* | ||
* EFI time source | ||
* | ||
*/ | ||
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/** | ||
* Get current time in seconds | ||
* | ||
* @ret time Time, in seconds | ||
*/ | ||
static time_t efi_get_time ( void ) { | ||
EFI_RUNTIME_SERVICES *rs = efi_systab->RuntimeServices; | ||
EFI_TIME time; | ||
struct tm tm; | ||
EFI_STATUS efirc; | ||
int rc; | ||
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/* Get current time and date */ | ||
if ( ( efirc = rs->GetTime ( &time, NULL ) ) != 0 ) { | ||
rc = -EEFI ( efirc ); | ||
DBGC ( rs, "EFITIME could not get system time: %s\n", | ||
strerror ( rc ) ); | ||
/* Nothing meaningful we can return */ | ||
return 0; | ||
} | ||
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/* Construct broken-down time */ | ||
memset ( &tm, 0, sizeof ( tm ) ); | ||
tm.tm_sec = time.Second; | ||
tm.tm_min = time.Minute; | ||
tm.tm_hour = time.Hour; | ||
tm.tm_mday = time.Day; | ||
tm.tm_mon = ( time.Month - 1 ); | ||
tm.tm_year = ( time.Year - 1900 ); | ||
DBGC ( rs, "EFITIME is %04d-%02d-%02d %02d:%02d:%02d\n", | ||
( tm.tm_year + 1900 ), ( tm.tm_mon + 1 ), | ||
tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec ); | ||
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/* Convert to seconds since the Epoch */ | ||
return mktime ( &tm ); | ||
} | ||
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PROVIDE_TIME ( efi, time_now, efi_get_time ); |