1/* $NetBSD: efiio.h,v 1.2.4.1 2023/08/01 16:05:12 martin Exp $ */
 2
 3/*-
 4 * Copyright (c) 2021 The NetBSD Foundation, Inc.
 5 * All rights reserved.
 6 *
 7 * This code is derived from software contributed to The NetBSD Foundation
 8 * by Jared McNeill <jmcneill@invisible.ca>.
 9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#ifndef _SYS_EFIIO_H
33#define _SYS_EFIIO_H
34
35#include <sys/types.h>
36#include <sys/ioccom.h>
37#include <sys/uuid.h>
38
39/*
40 * Variable attributes
41 */
42#define	EFI_VARIABLE_NON_VOLATILE				0x00000001
43#define	EFI_VARIABLE_BOOTSERVICE_ACCESS				0x00000002
44#define	EFI_VARIABLE_RUNTIME_ACCESS				0x00000004
45#define	EFI_VARIABLE_HARDWARE_ERROR_RECORD			0x00000008
46#define	EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS			0x00000010
47#define	EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS	0x00000020
48#define	EFI_VARIABLE_APPEND_WRITE				0x00000040
49#define	EFI_VARIABLE_ENHANCED_AUTHENTICATED_ACCESS		0x00000080
50
51struct efi_get_table_ioc {
52	void *		buf;
53	struct uuid	uuid;
54	size_t		table_len;
55	size_t		buf_len;
56};
57
58struct efi_var_ioc {
59	uint16_t *	name;		/* vendor's variable name */
60	size_t		namesize;	/* size in bytes of the name buffer */
61	struct uuid	vendor;		/* unique identifier for vendor */
62	uint32_t	attrib;		/* variable attribute bitmask */
63	void *		data;		/* buffer containing variable data */
64	size_t		datasize;	/* size in bytes of the data buffer */
65};
66
67#define	EFIIOC_GET_TABLE	_IOWR('e', 1, struct efi_get_table_ioc)
68#define	EFIIOC_VAR_GET		_IOWR('e', 4, struct efi_var_ioc)
69#define	EFIIOC_VAR_NEXT		_IOWR('e', 5, struct efi_var_ioc)
70#define	EFIIOC_VAR_SET		_IOWR('e', 7, struct efi_var_ioc)
71
72#endif /* _SYS_EFIIO_H */