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dtc: Add testcase for dtc references

This patch adds a testcase for dtc's reference-to-phandle
functionality.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
main
David Gibson 17 years ago committed by Jon Loeliger
parent
commit
682576d85b
  1. 3
      tests/Makefile.tests
  2. 100
      tests/references.c
  3. 23
      tests/references.dts

3
tests/Makefile.tests

@ -9,7 +9,8 @@ LIB_TESTS_L = get_mem_rsv \ @@ -9,7 +9,8 @@ LIB_TESTS_L = get_mem_rsv \
sw_tree1 \
move_and_save mangle-layout \
open_pack rw_tree1 setprop del_property del_node \
string_escapes dtbs_equal_ordered
string_escapes references \
dtbs_equal_ordered
LIB_TESTS = $(LIB_TESTS_L:%=$(TESTS_PREFIX)%)

LIBTREE_TESTS_L = truncated_property

100
tests/references.c

@ -0,0 +1,100 @@ @@ -0,0 +1,100 @@
/*
* libfdt - Flat Device Tree manipulation
* Testcase for phandle references in dtc
* 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 <stdint.h>

#include <fdt.h>
#include <libfdt.h>

#include "tests.h"
#include "testdata.h"

void check_ref(const void *fdt, int node, uint32_t checkref)
{
const uint32_t *p;
uint32_t ref;
int len;

p = fdt_getprop(fdt, node, "ref", &len);
if (!p)
FAIL("fdt_getprop(%d, \"ref\"): %s", node, fdt_strerror(len));
if (len != sizeof(*p))
FAIL("'ref' in node at %d has wrong size (%d instead of %d)",
node, len, sizeof(*p));
ref = fdt32_to_cpu(*p);
if (ref != checkref)
FAIL("'ref' in node at %d has value 0x%x instead of 0x%x",
node, ref, checkref);

p = fdt_getprop(fdt, node, "lref", &len);
if (!p)
FAIL("fdt_getprop(%d, \"lref\"): %s", node, fdt_strerror(len));
if (len != sizeof(*p))
FAIL("'lref' in node at %d has wrong size (%d instead of %d)",
node, len, sizeof(*p));
ref = fdt32_to_cpu(*p);
if (ref != checkref)
FAIL("'lref' in node at %d has value 0x%x instead of 0x%x",
node, ref, checkref);
}

int main(int argc, char *argv[])
{
void *fdt;
int n1, n2, n3, n4;
uint32_t h1, h2, h4;

test_init(argc, argv);
fdt = load_blob_arg(argc, argv);

n1 = fdt_path_offset(fdt, "/node1");
if (n1 < 0)
FAIL("fdt_path_offset(/node1): %s", fdt_strerror(n1));
n2 = fdt_path_offset(fdt, "/node2");
if (n2 < 0)
FAIL("fdt_path_offset(/node2): %s", fdt_strerror(n2));
n3 = fdt_path_offset(fdt, "/node3");
if (n3 < 0)
FAIL("fdt_path_offset(/node3): %s", fdt_strerror(n3));
n4 = fdt_path_offset(fdt, "/node4");
if (n4 < 0)
FAIL("fdt_path_offset(/node4): %s", fdt_strerror(n4));

h1 = fdt_get_phandle(fdt, n1);
h2 = fdt_get_phandle(fdt, n2);
h4 = fdt_get_phandle(fdt, n4);

if (h1 != 0x2000)
FAIL("/node1 has wrong phandle, 0x%x instead of 0x%x",
h1, 0x2000);
if (h2 != 0x1)
FAIL("/node2 has wrong phandle, 0x%x instead of 0x%x",
h2, 0x1);
if ((h4 == 0x2000) || (h4 == 0x1) || (h4 == 0))
FAIL("/node4 has bad phandle, 0x%x", h4);

check_ref(fdt, n1, h2);
check_ref(fdt, n2, h1);
check_ref(fdt, n3, h4);

PASS();
}

23
tests/references.dts

@ -0,0 +1,23 @@ @@ -0,0 +1,23 @@
/dts-v1/;

/ {
/* Explicit phandles */
n1: node1 {
linux,phandle = <0x2000>;
ref = <&/node2>; /* reference precedes target */
lref = <&n2>;
};
n2: node2 {
linux,phandle = <0x1>;
ref = <&/node1>; /* reference after target */
lref = <&n1>;
};

/* Implicit phandles */
n3: node3 {
ref = <&/node4>;
lref = <&n4>;
};
n4: node4 {
};
};
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