Differential D16653 Diff 57822 sys/contrib/libfdt/fdt_addresses.c

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sys/contrib/libfdt/fdt_addresses.c

	/*			/*
	* libfdt - Flat Device Tree manipulation			* libfdt - Flat Device Tree manipulation
	* Copyright (C) 2014 David Gibson <david@gibson.dropbear.id.au>			* Copyright (C) 2014 David Gibson <david@gibson.dropbear.id.au>
				* Copyright (C) 2018 embedded brains GmbH
	*			*
	* libfdt is dual licensed: you can use it either under the terms of			* libfdt is dual licensed: you can use it either under the terms of
	* the GPL, or the BSD license, at your option.			* the GPL, or the BSD license, at your option.
	*			*
	* a) This library is free software; you can redistribute it and/or			* a) This library is free software; you can redistribute it and/or
	* modify it under the terms of the GNU General Public License as			* modify it under the terms of the GNU General Public License as
	* published by the Free Software Foundation; either version 2 of the			* published by the Free Software Foundation; either version 2 of the
	* License, or (at your option) any later version.			* License, or (at your option) any later version.
	Show All 38 Lines
	*/			*/
	#include "libfdt_env.h"			#include "libfdt_env.h"

	#include <fdt.h>			#include <fdt.h>
	#include <libfdt.h>			#include <libfdt.h>

	#include "libfdt_internal.h"			#include "libfdt_internal.h"

	int fdt_address_cells(const void *fdt, int nodeoffset)			static int fdt_cells(const void fdt, int nodeoffset, const char name)
	{			{
	const fdt32_t *ac;			const fdt32_t *c;
	int val;			int val;
	int len;			int len;

	ac = fdt_getprop(fdt, nodeoffset, "#address-cells", &len);			c = fdt_getprop(fdt, nodeoffset, name, &len);
	if (!ac)			if (!c)
	return 2;			return len;

	if (len != sizeof(*ac))			if (len != sizeof(*c))
	return -FDT_ERR_BADNCELLS;			return -FDT_ERR_BADNCELLS;

	val = fdt32_to_cpu(*ac);			val = fdt32_to_cpu(*c);
	if ((val <= 0) \|\| (val > FDT_MAX_NCELLS))			if ((val <= 0) \|\| (val > FDT_MAX_NCELLS))
	return -FDT_ERR_BADNCELLS;			return -FDT_ERR_BADNCELLS;

	return val;			return val;
	}			}

	int fdt_size_cells(const void *fdt, int nodeoffset)			int fdt_address_cells(const void *fdt, int nodeoffset)
	{			{
	const fdt32_t *sc;
	int val;			int val;
	int len;

	sc = fdt_getprop(fdt, nodeoffset, "#size-cells", &len);			val = fdt_cells(fdt, nodeoffset, "#address-cells");
	if (!sc)			if (val == -FDT_ERR_NOTFOUND)
	return 2;			return 2;
				return val;
				}

	if (len != sizeof(*sc))			int fdt_size_cells(const void *fdt, int nodeoffset)
	return -FDT_ERR_BADNCELLS;			{
				int val;

	val = fdt32_to_cpu(*sc);			val = fdt_cells(fdt, nodeoffset, "#size-cells");
	if ((val < 0) \|\| (val > FDT_MAX_NCELLS))			if (val == -FDT_ERR_NOTFOUND)
	return -FDT_ERR_BADNCELLS;			return 1;

	return val;			return val;
	}			}