1 /* $NetBSD: efiio.h,v 1.3 2023/05/22 16:27:58 riastradh 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 51 struct efi_get_table_ioc { 52 void * buf; 53 struct uuid uuid; 54 size_t table_len; 55 size_t buf_len; 56 }; 57 58 struct 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 */ 73