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stand/efi/libefi/time_arm64.c
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| /*- | |||||
| * SPDX-License-Identifier: BSD-2-Clause | |||||
| * | |||||
| * Copyright (c) 2021 Andrew Turner | |||||
| * | |||||
| * This work was supported by Innovate UK project 105694, "Digital Security | |||||
| * by Design (DSbD) Technology Platform Prototype". | |||||
| * | |||||
| * Redistribution and use in source and binary forms, with or without | |||||
| * modification, are permitted provided that the following conditions | |||||
| * are met: | |||||
| * 1. Redistributions of source code must retain the above copyright | |||||
| * notice, this list of conditions and the following disclaimer. | |||||
| * 2. Redistributions in binary form must reproduce the above copyright | |||||
| * notice, this list of conditions and the following disclaimer in the | |||||
| * documentation and/or other materials provided with the distribution. | |||||
| * | |||||
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND | |||||
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |||||
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |||||
| * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |||||
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |||||
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |||||
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |||||
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |||||
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |||||
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |||||
| * SUCH DAMAGE. | |||||
| */ | |||||
| #include <sys/cdefs.h> | |||||
| __FBSDID("$FreeBSD$"); | |||||
| #include <efi.h> | |||||
| #include <efilib.h> | |||||
| #include <time.h> | |||||
| #include <sys/time.h> | |||||
| #include <machine/armreg.h> | |||||
| static uint64_t timer_freq; | |||||
| void | |||||
| efi_time_init(void) | |||||
| { | |||||
| /* Find the timer frequency */ | |||||
| timer_freq = READ_SPECIALREG(cntfrq_el0); | |||||
| } | |||||
| void | |||||
| efi_time_fini(void) | |||||
| { | |||||
| } | |||||
| time_t | |||||
| time(time_t *tloc) | |||||
| { | |||||
| time_t t; | |||||
| t = READ_SPECIALREG(cntvct_el0) / timer_freq; | |||||
| if (tloc != NULL) | |||||
| *tloc = t; | |||||
| return (t); | |||||
| } | |||||
| time_t | |||||
| getsecs(void) | |||||
| { | |||||
| return time(NULL); | |||||
| } | |||||