tests/sized_cells.c

// SPDX-License-Identifier: LGPL-2.1-or-later
/*
 * libfdt - Flat Device Tree manipulation
 *	Testcase for variable sized cells in dtc
 * Copyright (C) 2006 David Gibson, IBM Corporation.
 * Copyright (C) 2011 The Chromium Authors. All rights reserved.
 */
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <stdint.h>

#include <libfdt.h>

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

static void check_compare_properties(void *fdt,
				     char const *name_one,
				     char const *name_two)
{
	const void *propval;
	int proplen;

	propval = fdt_getprop(fdt, 0, name_one, &proplen);

	if (!propval)
		FAIL("fdt_getprop(\"%s\"): %s",
		     name_one,
		     fdt_strerror(proplen));

	check_getprop(fdt, 0, name_two, proplen, propval);
}

int main(int argc, char *argv[])
{
	void *fdt;
	uint8_t expected_8[6] = {TEST_CHAR1,
				 TEST_CHAR2,
				 TEST_CHAR3,
				 TEST_CHAR4,
				 TEST_CHAR5,
				 TEST_VALUE_1 >> 24};
	fdt16_t expected_16[6];
	fdt32_t expected_32[6];
	fdt64_t expected_64[6];
	int i;

	for (i = 0; i < 5; ++i) {
		expected_16[i] = cpu_to_fdt16(expected_8[i]);
		expected_32[i] = cpu_to_fdt32(expected_8[i]);
		expected_64[i] = cpu_to_fdt64(expected_8[i]);
	}

	expected_16[5] = cpu_to_fdt16(TEST_VALUE_1 >> 16);
	expected_32[5] = cpu_to_fdt32(TEST_VALUE_1);
	expected_64[5] = cpu_to_fdt64(TEST_ADDR_1);

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

	check_getprop(fdt, 0, "cells-8b", sizeof(expected_8), expected_8);
	check_getprop(fdt, 0, "cells-16b", sizeof(expected_16), expected_16);
	check_getprop(fdt, 0, "cells-32b", sizeof(expected_32), expected_32);
	check_getprop(fdt, 0, "cells-64b", sizeof(expected_64), expected_64);

	check_compare_properties(fdt, "cells-one-16b", "cells-one-32b");

	PASS();
}