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      1 /* $NetBSD: fdt_memory.h,v 1.2 2022/11/04 10:51:16 jmcneill Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2018 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 (at) 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 _DEV_FDT_FDT_MEMORY_H_
     33 #define _DEV_FDT_FDT_MEMORY_H_
     34 
     35 #include "opt_fdt.h"
     36 
     37 #ifndef FDT_MEMORY_RANGES
     38 #define FDT_MEMORY_RANGES 256
     39 #endif
     40 
     41 struct fdt_memory {
     42 	uint64_t	start;
     43 	uint64_t	end;
     44 };
     45 
     46 void	fdt_memory_init(void);
     47 void	fdt_memory_get(uint64_t *, uint64_t *);
     48 void	fdt_memory_add_range(uint64_t, uint64_t);
     49 void	fdt_memory_remove_range(uint64_t, uint64_t);
     50 void	fdt_memory_remove_reserved(uint64_t, uint64_t);
     51 
     52 void	fdt_memory_foreach(void (*)(const struct fdt_memory *, void *), void *);
     53 
     54 #endif /* _DEV_FDT_FDT_MEMORY_H_ */
     55