1 /*- 2 * Copyright (c) 2016 Andrew Turner 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD$"); 29 30 #include <efi.h> 31 #include <efilib.h> 32 33 #include <time.h> 34 #include <sys/time.h> 35 36 static EFI_EVENT time_event; 37 static uint64_t curtime; 38 39 static void 40 time_update(EFI_EVENT event, void *context) 41 { 42 43 curtime++; 44 } 45 46 void 47 efi_time_init(void) 48 { 49 50 /* Create a timer event */ 51 BS->CreateEvent(EVT_TIMER | EVT_NOTIFY_SIGNAL, TPL_CALLBACK, 52 time_update, 0, &time_event); 53 /* Use a 1s timer */ 54 BS->SetTimer(time_event, TimerPeriodic, 10000000); 55 } 56 57 void 58 efi_time_fini(void) 59 { 60 61 /* Cancel the timer */ 62 BS->SetTimer(time_event, TimerCancel, 0); 63 BS->CloseEvent(time_event); 64 } 65 66 time_t 67 time(time_t *tloc) 68 { 69 time_t t; 70 71 t = curtime; 72 if (tloc != NULL) 73 *tloc = t; 74 75 return (t); 76 } 77 78 time_t 79 getsecs(void) 80 { 81 return time(0); 82 } 83