text: /*
   * libfdt - Flat Device Tree manipulation
   *	Testcase/tool for rearranging blocks of a dtb
   * Copyright (C) 2006 David Gibson, IBM Corporation.
   *
   * This library is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Lesser General Public License
   * as published by the Free Software Foundation; either version 2.1 of
   * the License, or (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful, but
   * WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   * Lesser General Public License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
   */
  
  #include <stdlib.h>
  #include <stdio.h>
  #include <string.h>
  #include <limits.h>
  #include <stdint.h>
  
  #include <libfdt.h>
  
  #include "tests.h"
  #include "testdata.h"
  
  static int nopulate_struct(char *buf, const char *fdt)
  {
  	int offset, nextoffset = 0;
  	uint32_t tag;
  	char *p;
  
  	p = buf;
  
  	do {
  		offset = nextoffset;
  		tag = fdt_next_tag(fdt, offset, &nextoffset);
  
  		memcpy(p, (const char *)fdt + fdt_off_dt_struct(fdt) + offset,
  		       nextoffset - offset);
  		p += nextoffset - offset;
  
  		*((uint32_t *)p) = cpu_to_fdt32(FDT_NOP);
  		p += FDT_TAGSIZE;
  
  	} while (tag != FDT_END);
  
  	return p - buf;
  }
  
  int main(int argc, char *argv[])
  {
  	char *fdt, *fdt2, *buf;
  	int newsize, struct_start, struct_end_old, struct_end_new, delta;
  	const char *inname;
  	char outname[PATH_MAX];
  
  	test_init(argc, argv);
  	if (argc != 2)
  		CONFIG("Usage: %s <dtb file>", argv[0]);
  
  	inname = argv[1];
  	fdt = load_blob(argv[1]);
  	sprintf(outname, "noppy.%s", inname);
  
  	if (fdt_version(fdt) < 17)
  		FAIL("Can't deal with version <17");
  
  	buf = xmalloc(2 * fdt_size_dt_struct(fdt));
  
  	newsize = nopulate_struct(buf, fdt);
  
  	verbose_printf("Nopulated structure block has new size %d\n", newsize);
  
  	/* Replace old strcutre block with the new */
  
  	fdt2 = xmalloc(fdt_totalsize(fdt) + newsize);
  
  	struct_start = fdt_off_dt_struct(fdt);
  	delta = newsize - fdt_size_dt_struct(fdt);
  	struct_end_old = struct_start + fdt_size_dt_struct(fdt);
  	struct_end_new = struct_start + newsize;
  
  	memcpy(fdt2, fdt, struct_start);
  	memcpy(fdt2 + struct_start, buf, newsize);
  	memcpy(fdt2 + struct_end_new, fdt + struct_end_old,
  	       fdt_totalsize(fdt) - struct_end_old);
  
  	fdt_set_totalsize(fdt2, fdt_totalsize(fdt) + delta);
  	fdt_set_size_dt_struct(fdt2, newsize);
  
  	if (fdt_off_mem_rsvmap(fdt) > struct_start)
  		fdt_set_off_mem_rsvmap(fdt2, fdt_off_mem_rsvmap(fdt) + delta);
  	if (fdt_off_dt_strings(fdt) > struct_start)
  		fdt_set_off_dt_strings(fdt2, fdt_off_dt_strings(fdt) + delta);
  
  	save_blob(outname, fdt2);
  
  	PASS();
  }
  