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freebsd
GitHub Repository: freebsd/freebsd-src
 Path: blob/main/sys/amd64/include/efi.h
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/*-

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 * Copyright (c) 2016 The FreeBSD Foundation

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 *

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 * This software was developed by Konstantin Belousov <[email protected]>

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 * under sponsorship from the FreeBSD Foundation.

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 *

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 * Redistribution and use in source and binary forms, with or without

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 * modification, are permitted provided that the following conditions

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 * are met:

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 * 1. Redistributions of source code must retain the above copyright

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 *    notice, this list of conditions and the following disclaimer.

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 * 2. Redistributions in binary form must reproduce the above copyright

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 *    notice, this list of conditions and the following disclaimer in the

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 *    documentation and/or other materials provided with the distribution.

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 *

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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND

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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

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 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE

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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

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 * SUCH DAMAGE.

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 */

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#ifndef __AMD64_INCLUDE_EFI_H_

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#define __AMD64_INCLUDE_EFI_H_

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#include <sys/types.h>

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/*

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 * XXX: from gcc 6.2 manual:

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 * Note, the ms_abi attribute for Microsoft Windows 64-bit targets

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 * currently requires the -maccumulate-outgoing-args option.

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 *

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 * Avoid EFIABI_ATTR declarations for compilers that don't support it.

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 * GCC support began in version 4.4.

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 */

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#if defined(__clang__) || defined(__GNUC__) && \

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    (__GNUC__ > 4 || __GNUC__ == 4 && __GNUC_MINOR__ >= 4)

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#define	EFIABI_ATTR	__attribute__((ms_abi))

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#endif

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#ifdef _KERNEL

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#include <isa/rtc.h>

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#define ARCH_MAY_USE_EFI

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#define	EFI_TIME_LOCK()		mtx_lock(&atrtc_time_lock)

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#define	EFI_TIME_UNLOCK()	mtx_unlock(&atrtc_time_lock)

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#define	EFI_TIME_OWNED()	mtx_assert(&atrtc_time_lock, MA_OWNED)

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#define	EFI_RT_HANDLE_FAULTS_DEFAULT	1

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#define EFI_MAP_BOOTTYPE_ALLOWED(type) (((efi_map_regs >> (type)) & 1) != 0)

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extern uint32_t efi_map_regs;

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#endif

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struct efirt_callinfo {

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	const char	*ec_name;

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	register_t	ec_efi_status;

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	register_t	ec_fptr;

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	register_t	ec_argcnt;

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	register_t	ec_arg1;

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	register_t	ec_arg2;

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	register_t	ec_arg3;

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	register_t	ec_arg4;

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	register_t	ec_arg5;

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	register_t	ec_rbx;

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	register_t	ec_rsp;

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	register_t	ec_rbp;

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	register_t	ec_r12;

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	register_t	ec_r13;

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	register_t	ec_r14;

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	register_t	ec_r15;

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	register_t	ec_rflags;

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};

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#endif /* __AMD64_INCLUDE_EFI_H_ */

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