xref: /freebsd/sys/amd64/include/efi.h (revision 6829dae12bb055451fa467da4589c43bd03b1e64)
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  * Avoid EFIABI_ATTR declarations for compilers that don't support it.
41  * GCC support began in version 4.4.
42  */
43 #if defined(__clang__) || defined(__GNUC__) && \
44     (__GNUC__ > 4 || __GNUC__ == 4 && __GNUC_MINOR__ >= 4)
45 #define	EFIABI_ATTR	__attribute__((ms_abi))
46 #endif
47 
48 #ifdef _KERNEL
49 #include <isa/rtc.h>
50 
51 #define	EFI_TIME_LOCK()		mtx_lock(&atrtc_time_lock)
52 #define	EFI_TIME_UNLOCK()	mtx_unlock(&atrtc_time_lock)
53 #define	EFI_TIME_OWNED()	mtx_assert(&atrtc_time_lock, MA_OWNED)
54 
55 #define	EFI_RT_HANDLE_FAULTS_DEFAULT	1
56 #endif
57 
58 struct efirt_callinfo {
59 	const char	*ec_name;
60 	register_t	ec_efi_status;
61 	register_t	ec_fptr;
62 	register_t	ec_argcnt;
63 	register_t	ec_arg1;
64 	register_t	ec_arg2;
65 	register_t	ec_arg3;
66 	register_t	ec_arg4;
67 	register_t	ec_arg5;
68 	register_t	ec_rbx;
69 	register_t	ec_rsp;
70 	register_t	ec_rbp;
71 	register_t	ec_r12;
72 	register_t	ec_r13;
73 	register_t	ec_r14;
74 	register_t	ec_r15;
75 };
76 
77 #endif /* __AMD64_INCLUDE_EFI_H_ */
78