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// SPDX-License-Identifier: LGPL-2.1-or-later
/*
* libfdt - Flat Device Tree manipulation
* Testcase for fdt_get_phandle()
* Copyright (C) 2006 David Gibson, IBM Corporation.
*/
#include <stdbool.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <stdint.h>
#include <libfdt.h>
#include "tests.h"
#include "testdata.h"
static void check_phandle(void *fdt, const char *path, uint32_t checkhandle)
{
int offset;
uint32_t phandle;
offset = fdt_path_offset(fdt, path);
if (offset < 0)
FAIL("Couldn't find %s", path);
phandle = fdt_get_phandle(fdt, offset);
if (phandle != checkhandle)
FAIL("fdt_get_phandle(%s) returned 0x%x instead of 0x%x\n",
path, phandle, checkhandle);
}
static void check_phandle_unique(const void *fdt, uint32_t checkhandle)
{
uint32_t phandle;
int offset = -1;
while (true) {
offset = fdt_next_node(fdt, offset, NULL);
if (offset < 0) {
if (offset == -FDT_ERR_NOTFOUND)
break;
FAIL("error looking for phandle %#x", checkhandle);
}
phandle = fdt_get_phandle(fdt, offset);
if (phandle == checkhandle)
FAIL("generated phandle already exists");
}
}
int main(int argc, char *argv[])
{
uint32_t max, phandle;
void *fdt;
int err;
test_init(argc, argv);
fdt = load_blob_arg(argc, argv);
check_phandle(fdt, "/", 0);
check_phandle(fdt, "/subnode@2", PHANDLE_1);
check_phandle(fdt, "/subnode@2/subsubnode@0", PHANDLE_2);
err = fdt_find_max_phandle(fdt, &max);
if (err < 0)
FAIL("fdt_find_max_phandle returned %d instead of 0\n", err);
if (max != PHANDLE_2)
FAIL("fdt_find_max_phandle found 0x%x instead of 0x%x", max,
PHANDLE_2);
max = fdt_get_max_phandle(fdt);
if (max != PHANDLE_2)
FAIL("fdt_get_max_phandle returned 0x%x instead of 0x%x\n",
max, PHANDLE_2);
err = fdt_generate_phandle(fdt, &phandle);
if (err < 0)
FAIL("failed to generate phandle: %d", err);
check_phandle_unique(fdt, phandle);
PASS();
}
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