xref: /freebsd/sys/amd64/include/efi.h (revision 273c26a3c3bea87a241d6879abd4f991db180bf0)
1 /*-
2  * Copyright (c) 2016 The FreeBSD Foundation
3  * All rights reserved.
4  *
5  * This software was developed by Konstantin Belousov <kib@FreeBSD.org>
6  * under sponsorship from the FreeBSD Foundation.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  *    notice, this list of conditions and the following disclaimer.
13  * 2. Redistributions in binary form must reproduce the above copyright
14  *    notice, this list of conditions and the following disclaimer in the
15  *    documentation and/or other materials provided with the distribution.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27  * SUCH DAMAGE.
28  *
29  * $FreeBSD$
30  */
31 
32 #ifndef __AMD64_INCLUDE_EFI_H_
33 #define __AMD64_INCLUDE_EFI_H_
34 
35 /*
36  * XXX: from gcc 6.2 manual:
37  * Note, the ms_abi attribute for Microsoft Windows 64-bit targets
38  * currently requires the -maccumulate-outgoing-args option.
39  */
40 #define	EFIABI_ATTR	__attribute__((ms_abi))
41 
42 #ifdef _KERNEL
43 struct uuid;
44 struct efi_tm;
45 
46 int efi_get_table(struct uuid *uuid, void **ptr);
47 int efi_get_time(struct efi_tm *tm);
48 int efi_get_time_locked(struct efi_tm *tm);
49 int efi_reset_system(void);
50 int efi_set_time(struct efi_tm *tm);
51 int efi_set_time_locked(struct efi_tm *tm);
52 int efi_var_get(uint16_t *name, struct uuid *vendor, uint32_t *attrib,
53     size_t *datasize, void *data);
54 int efi_var_nextname(size_t *namesize, uint16_t *name, struct uuid *vendor);
55 int efi_var_set(uint16_t *name, struct uuid *vendor, uint32_t attrib,
56     size_t datasize, void *data);
57 #endif
58 
59 #endif /* __AMD64_INCLUDE_EFI_H_ */
60