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      1 /* $NetBSD: efiio.h,v 1.1 2025/02/24 13:47:56 christos Exp $ */
      2 
      3 /*
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
     14  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     15  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     16  * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     17  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     18  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     19  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     20  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     21  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     22  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     23  * SUCH DAMAGE.
     24  */
     25 
     26 #ifndef _EFIIO_H_
     27 #define _EFIIO_H_
     28 
     29 #ifndef lint
     30 __RCSID("$NetBSD: efiio.h,v 1.1 2025/02/24 13:47:56 christos Exp $");
     31 #endif /* not lint */
     32 
     33 #include <sys/efiio.h>
     34 #include <stdbool.h>
     35 
     36 #include "utils.h"
     37 
     38 /*
     39  * {Get,Set}Variable() attribute bits: See sys/efiio.h
     40  */
     41 #define	EFI_VAR_ATTR_BITS \
     42 	"\177\020"		\
     43 	"b\x0""nvmem\0"		\
     44 	"b\x1""BSAcc\0"		\
     45 	"b\x2""RTAcc\0"		\
     46 	"b\x3""HWErr\0"		\
     47 	"b\x4""WrAcc\0"		\
     48 	"b\x5""TmAuthWr\0"	\
     49 	"b\x6""AppWr\0"		\
     50 	"b\x7""AuthAcc\0"
     51 
     52 typedef struct efi_var_ioc efi_var_ioc_t;
     53 
     54 typedef struct efi_var {
     55 	efi_var_ioc_t ev;
     56 	char *name;		/* asciiz name string */
     57 } efi_var_t;
     58 
     59 static inline void
     60 efi_var_init(efi_var_ioc_t *ev, const char *name,
     61     uuid_t *vendor, uint32_t attrib)
     62 {
     63 	size_t isz = strlen(name) + 1;
     64 
     65 	memset(ev, 0, sizeof(*ev));
     66 	ev->name = utf8_to_ucs2(name, isz, NULL, &ev->namesize);
     67 	ev->attrib = attrib;
     68 	memcpy(&ev->vendor, vendor, sizeof(ev->vendor));
     69 }
     70 
     71 int set_variable(int, struct efi_var_ioc *);
     72 struct efi_var_ioc get_variable(int, const char *, struct uuid *, uint32_t);
     73 struct efi_var_ioc *get_next_variable(int, struct efi_var_ioc *);
     74 void *get_table(int, struct uuid *, size_t *);
     75 size_t get_variable_info(int, bool (*)(struct efi_var_ioc *, void *),
     76     int (*)(struct efi_var_ioc *ev, void *), void *);
     77 
     78 #endif /* _EFIIO_H_ */
     79