/* SPDX-License-Identifier:	GPL-2.0+ BSD-2-Clause */
  #include "fdt_host.h"
  #include "../../scripts/dtc/libfdt/fdt_rw.c"
  
  int fdt_remove_unused_strings(const void *old, void *new)
  {
  	const struct fdt_property *old_prop;
  	struct fdt_property *new_prop;
  	int size = fdt_totalsize(old);
  	int next_offset, offset;
  	const char *str;
  	int ret;
  	int tag = FDT_PROP;
  
  	/* Make a copy and remove the strings */
  	memcpy(new, old, size);
  	fdt_set_size_dt_strings(new, 0);
  
  	/* Add every property name back into the new string table */
  	for (offset = 0; tag != FDT_END; offset = next_offset) {
  		tag = fdt_next_tag(old, offset, &next_offset);
  		if (tag != FDT_PROP)
  			continue;
  		old_prop = fdt_get_property_by_offset(old, offset, NULL);
  		new_prop = (struct fdt_property *)(unsigned long)
  			fdt_get_property_by_offset(new, offset, NULL);
  		str = fdt_string(old, fdt32_to_cpu(old_prop->nameoff));
  		ret = _fdt_find_add_string(new, str);
  		if (ret < 0)
  			return ret;
  		new_prop->nameoff = cpu_to_fdt32(ret);
  	}
  
  	return 0;
  }