// SPDX-License-Identifier: (GPL-2.0-or-later OR BSD-2-Clause)

/*

 * libfdt - Flat Device Tree manipulation

 * Copyright (C) 2006 David Gibson, IBM Corporation.

 */

#include "libfdt_env.h"

#include <fdt.h>

#include <libfdt.h>

#include "libfdt_internal.h"

int fdt_setprop_inplace_namelen_partial(void *fdt, int nodeoffset,

					const char *name, int namelen,

					uint32_t idx, const void *val,

					int len)

{

	void *propval;

	int proplen;

	propval = fdt_getprop_namelen_w(fdt, nodeoffset, name, namelen,

					&proplen);

	if (!propval)

		return proplen;

	if (proplen < (len + idx))

		return -FDT_ERR_NOSPACE;

	memcpy((char *)propval + idx, val, len);

	return 0;

}

int fdt_setprop_inplace(void *fdt, int nodeoffset, const char *name,

			const void *val, int len)

{

	const void *propval;

	int proplen;

	propval = fdt_getprop(fdt, nodeoffset, name, &proplen);

	if (!propval)

		return proplen;

	if (proplen != len)

		return -FDT_ERR_NOSPACE;

	return fdt_setprop_inplace_namelen_partial(fdt, nodeoffset, name,

						   strlen(name), 0,

						   val, len);

}

static void fdt_nop_region_(void *start, int len)

{

	fdt32_t *p;

	for (p = start; (char *)p < ((char *)start + len); p++)

		*p = cpu_to_fdt32(FDT_NOP);

}

int fdt_nop_property(void *fdt, int nodeoffset, const char *name)

{

	struct fdt_property *prop;

	int len;

	prop = fdt_get_property_w(fdt, nodeoffset, name, &len;;

	if (!prop)

		return len;

	fdt_nop_region_(prop, len + sizeof(*prop));

	return 0;

}

int fdt_node_end_offset_(void *fdt, int offset)

{

	int depth = 0;

	while ((offset >= 0) && (depth >= 0))

		offset = fdt_next_node(fdt, offset, &depth);

	return offset;

}

int fdt_nop_node(void *fdt, int nodeoffset)

{

	int endoffset;

	endoffset = fdt_node_end_offset_(fdt, nodeoffset);

	if (endoffset < 0)

		return endoffset;

	fdt_nop_region_(fdt_offset_ptr_w(fdt, nodeoffset, 0),

			endoffset - nodeoffset);

	return 0;

}