1/*-
 2 * Copyright (c) 2016 The FreeBSD Foundation
 3 *
 4 * This software was developed by Konstantin Belousov <kib@FreeBSD.org>
 5 * under sponsorship from the FreeBSD Foundation.
 6 *
 7 * Redistribution and use in source and binary forms, with or without
 8 * modification, are permitted provided that the following conditions
 9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#ifndef __AMD64_INCLUDE_EFI_H_
30#define __AMD64_INCLUDE_EFI_H_
31
32/*
33 * XXX: from gcc 6.2 manual:
34 * Note, the ms_abi attribute for Microsoft Windows 64-bit targets
35 * currently requires the -maccumulate-outgoing-args option.
36 *
37 * Avoid EFIABI_ATTR declarations for compilers that don't support it.
38 * GCC support began in version 4.4.
39 */
40#if defined(__clang__) || defined(__GNUC__) && \
41    (__GNUC__ > 4 || __GNUC__ == 4 && __GNUC_MINOR__ >= 4)
42#define	EFIABI_ATTR	__attribute__((ms_abi))
43#endif
44
45#ifdef _KERNEL
46#include <isa/rtc.h>
47#define ARCH_MAY_USE_EFI
48
49#define	EFI_TIME_LOCK()		mtx_lock(&atrtc_time_lock)
50#define	EFI_TIME_UNLOCK()	mtx_unlock(&atrtc_time_lock)
51#define	EFI_TIME_OWNED()	mtx_assert(&atrtc_time_lock, MA_OWNED)
52
53#define	EFI_RT_HANDLE_FAULTS_DEFAULT	1
54#endif
55
56struct efirt_callinfo {
57	const char	*ec_name;
58	register_t	ec_efi_status;
59	register_t	ec_fptr;
60	register_t	ec_argcnt;
61	register_t	ec_arg1;
62	register_t	ec_arg2;
63	register_t	ec_arg3;
64	register_t	ec_arg4;
65	register_t	ec_arg5;
66	register_t	ec_rbx;
67	register_t	ec_rsp;
68	register_t	ec_rbp;
69	register_t	ec_r12;
70	register_t	ec_r13;
71	register_t	ec_r14;
72	register_t	ec_r15;
73	register_t	ec_rflags;
74};
75
76#endif /* __AMD64_INCLUDE_EFI_H_ */