d15667174d
code uses the GetTime function from the Runtime Service, however this has been shown to not return a useable time on many arm64 UEFI implementations. Reviewed by: jhb, smh Sponsored by: ABT Systems Ltd Differential Revision: https://reviews.freebsd.org/D6709
83 lines
2.1 KiB
C
83 lines
2.1 KiB
C
/*-
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* Copyright (c) 2016 Andrew Turner
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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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* 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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* 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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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* 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 THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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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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static EFI_EVENT time_event;
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static uint64_t curtime;
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static void
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time_update(EFI_EVENT event, void *context)
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{
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curtime += 10;
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}
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void
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efi_time_init(void)
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{
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/* Create a timer event */
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BS->CreateEvent(EVT_TIMER | EVT_NOTIFY_SIGNAL, TPL_CALLBACK,
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time_update, 0, &time_event);
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/* Use a 10ms timer */
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BS->SetTimer(time_event, TimerPeriodic, 100000);
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}
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void
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efi_time_fini(void)
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{
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/* Cancel the timer */
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BS->SetTimer(time_event, TimerCancel, 0);
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BS->CloseEvent(time_event);
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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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time_t t;
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t = curtime / 1000;
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if (tloc != NULL)
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*tloc = t;
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return (t);
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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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