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      1 /*	$NetBSD: nvramvar.h,v 1.5 2022/07/02 14:29:04 tsutsui Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1995 Leo Weppelman.
      5  * All rights reserved.
      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 ``AS IS'' AND ANY EXPRESS OR
     17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     26  */
     27 
     28 /*
     29  * Nvram driver - variable definitions
     30  */
     31 
     32 struct nvr_softc {
     33 	device_t sc_dev;
     34 	uint16_t sc_flags;
     35 };
     36 
     37 /*
     38  * nvr_flags
     39  */
     40 #define	NVR_CONFIGURED	1	/* Configured and valid	*/
     41 
     42 #ifdef _KERNEL
     43 /*
     44  * Kernel internal interface to read config info from nvram
     45  */
     46 int nvr_get_byte(int);
     47 
     48 /*
     49  * Error return from nvr_get_byte
     50  */
     51 #define	NVR_INVALID	(-1)
     52 #endif /* _KERNEL */
     53