/*
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* libfdt - Flat Device Tree manipulation
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* Testcase/tool for rearranging blocks of a dtb
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* Copyright (C) 2006 David Gibson, IBM Corporation.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public License
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* as published by the Free Software Foundation; either version 2.1 of
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* the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <limits.h>
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#include <stdint.h>
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#include <libfdt.h>
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#include "tests.h"
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#include "testdata.h"
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static int nopulate_struct(char *buf, const char *fdt)
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{
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int offset, nextoffset = 0;
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uint32_t tag;
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char *p;
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p = buf;
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do {
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offset = nextoffset;
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tag = fdt_next_tag(fdt, offset, &nextoffset);
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memcpy(p, (const char *)fdt + fdt_off_dt_struct(fdt) + offset,
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nextoffset - offset);
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p += nextoffset - offset;
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*((fdt32_t *)p) = cpu_to_fdt32(FDT_NOP);
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p += FDT_TAGSIZE;
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} while (tag != FDT_END);
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return p - buf;
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}
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int main(int argc, char *argv[])
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{
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char *fdt, *fdt2, *buf;
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int newsize, struct_start, struct_end_old, struct_end_new, delta;
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const char *inname;
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char outname[PATH_MAX];
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test_init(argc, argv);
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if (argc != 2)
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CONFIG("Usage: %s <dtb file>", argv[0]);
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inname = argv[1];
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fdt = load_blob(argv[1]);
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sprintf(outname, "noppy.%s", inname);
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if (fdt_version(fdt) < 17)
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FAIL("Can't deal with version <17");
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buf = xmalloc(2 * fdt_size_dt_struct(fdt));
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newsize = nopulate_struct(buf, fdt);
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verbose_printf("Nopulated structure block has new size %d\n", newsize);
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/* Replace old strcutre block with the new */
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fdt2 = xmalloc(fdt_totalsize(fdt) + newsize);
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struct_start = fdt_off_dt_struct(fdt);
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delta = newsize - fdt_size_dt_struct(fdt);
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struct_end_old = struct_start + fdt_size_dt_struct(fdt);
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struct_end_new = struct_start + newsize;
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memcpy(fdt2, fdt, struct_start);
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memcpy(fdt2 + struct_start, buf, newsize);
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memcpy(fdt2 + struct_end_new, fdt + struct_end_old,
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fdt_totalsize(fdt) - struct_end_old);
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fdt_set_totalsize(fdt2, fdt_totalsize(fdt) + delta);
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fdt_set_size_dt_struct(fdt2, newsize);
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if (fdt_off_mem_rsvmap(fdt) > struct_start)
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fdt_set_off_mem_rsvmap(fdt2, fdt_off_mem_rsvmap(fdt) + delta);
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if (fdt_off_dt_strings(fdt) > struct_start)
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fdt_set_off_dt_strings(fdt2, fdt_off_dt_strings(fdt) + delta);
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save_blob(outname, fdt2);
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PASS();
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}
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