xref: /src/sys/dev/fdt/fdt_memory.h

/* $NetBSD: fdt_memory.h,v 1.2 2022/11/04 10:51:16 jmcneill Exp $ */

/*-
 * Copyright (c) 2018 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Jared McNeill <jmcneill (at) invisible.ca>.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef _DEV_FDT_FDT_MEMORY_H_
#define _DEV_FDT_FDT_MEMORY_H_

#include "opt_fdt.h"

#ifndef FDT_MEMORY_RANGES
#define FDT_MEMORY_RANGES 256
#endif

struct fdt_memory {
	uint64_t	start;
	uint64_t	end;
};

void	fdt_memory_init(void);
void	fdt_memory_get(uint64_t *, uint64_t *);
void	fdt_memory_add_range(uint64_t, uint64_t);
void	fdt_memory_remove_range(uint64_t, uint64_t);
void	fdt_memory_remove_reserved(uint64_t, uint64_t);

void	fdt_memory_foreach(void (*)(const struct fdt_memory *, void *), void *);

#endif /* _DEV_FDT_FDT_MEMORY_H_ */