a90b5905fe
In light of the recently discovered bug with NOP handling, this adds some more testcases for NOP handling. Specifically, it adds a helper program which will add a NOP tag after every existing tag in a dtb, and runs the standard battery of tests over trees mangled in this way. For now, this does not add a NOP at the very beginning of the structure block. This causes problems for libfdt at present, because we assume in many places that the root node's BEGIN_NODE tag is at offset 0. I'm still contemplating what to do about this (with one option being simply to declare such dtbs invalid). Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
107 lines
2.8 KiB
C
107 lines
2.8 KiB
C
/*
|
|
* 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 <fdt.h>
|
|
#include <libfdt.h>
|
|
|
|
#include "tests.h"
|
|
#include "testdata.h"
|
|
|
|
int nopulate_struct(char *buf, const void *fdt)
|
|
{
|
|
int offset, nextoffset = 0;
|
|
uint32_t tag;
|
|
char *p;
|
|
|
|
p = buf;
|
|
|
|
do {
|
|
offset = nextoffset;
|
|
tag = fdt_next_tag(fdt, offset, &nextoffset);
|
|
|
|
memcpy(p, 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[])
|
|
{
|
|
void *fdt, *fdt2;
|
|
void *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();
|
|
}
|