libtests/libfdt01/init.c

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /*
0004  * Copyright (c) 2015 embedded brains GmbH & Co. KG
0005  *
0006  * Redistribution and use in source and binary forms, with or without
0007  * modification, are permitted provided that the following conditions
0008  * are met:
0009  * 1. Redistributions of source code must retain the above copyright
0010  *    notice, this list of conditions and the following disclaimer.
0011  * 2. Redistributions in binary form must reproduce the above copyright
0012  *    notice, this list of conditions and the following disclaimer in the
0013  *    documentation and/or other materials provided with the distribution.
0014  *
0015  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
0016  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
0017  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0018  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
0019  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
0020  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
0021  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
0022  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
0023  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
0024  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0025  * POSSIBILITY OF SUCH DAMAGE.
0026  */
0027
0028 #ifdef HAVE_CONFIG_H
0029 #include "config.h"
0030 #endif
0031
0032 #include "tmacros.h"
0033
0034 #include <libfdt.h>
0035 #include <string.h>
0036
0037 #include "some.h"
0038
0039 /*
0040  * To generate the FDT blob use:
0041  *
0042  * dtc some.dts -O asm > some.s
0043  * as some.s -o some.o
0044  * objcopy -O binary some.o some.bin
0045  * rtems-bin2c some.bin some.c
0046  */
0047
0048 const char rtems_test_name[] = "LIBFDT 1";
0049
0050 static void test(void)
0051 {
0052   const void *fdt = some_bin;
0053   int status;
0054   uint32_t size;
0055   const char *alias;
0056   int root;
0057   int cells;
0058   const char *prop;
0059   fdt32_t *prop_32;
0060   int len;
0061   int d;
0062   int m;
0063   int t;
0064   int node;
0065   uint32_t phandle;
0066   uint32_t cell;
0067
0068   status = fdt_check_header(fdt);
0069   rtems_test_assert(status == 0);
0070
0071   size = fdt_totalsize(fdt);
0072   rtems_test_assert(size == some_bin_size);
0073
0074   alias = fdt_get_alias(fdt, "nix");
0075   rtems_test_assert(alias == NULL);
0076
0077   alias = fdt_get_alias(fdt, "k");
0078   rtems_test_assert(strcmp(alias, "/m@1248") == 0);
0079
0080   root = fdt_path_offset(fdt, "nix");
0081   rtems_test_assert(root == -FDT_ERR_BADPATH);
0082
0083   root = fdt_path_offset(fdt, "/");
0084   rtems_test_assert(root >= 0);
0085
0086   cells = fdt_address_cells(fdt, root);
0087   rtems_test_assert(cells == 1);
0088
0089   cells = fdt_size_cells(fdt, root);
0090   rtems_test_assert(cells == 2);
0091
0092   status = fdt_node_check_compatible(fdt, root, "a,b");
0093   rtems_test_assert(status == 0);
0094
0095   status = fdt_node_check_compatible(fdt, root, "blub");
0096   rtems_test_assert(status == 1);
0097
0098   prop = fdt_getprop(fdt, root, "model", &len);
0099   rtems_test_assert(len == 2);
0100   rtems_test_assert(memcmp(prop, "c", 2) == 0);
0101
0102   d = fdt_subnode_offset(fdt, root, "slurf");
0103   rtems_test_assert(d == -FDT_ERR_NOTFOUND);
0104
0105   d = fdt_subnode_offset(fdt, root, "d");
0106   rtems_test_assert(d >= 0);
0107
0108   prop = fdt_getprop(fdt, d, "e", &len);
0109   rtems_test_assert(len == 2);
0110   rtems_test_assert(memcmp(prop, "f", 2) == 0);
0111
0112   prop = fdt_getprop(fdt, d, "g", &len);
0113   rtems_test_assert(len == 0);
0114   rtems_test_assert(prop != NULL);
0115
0116   m = fdt_subnode_offset(fdt, root, "m@1248");
0117   rtems_test_assert(m >= 0);
0118
0119   t = fdt_subnode_offset(fdt, root, "t");
0120   rtems_test_assert(t >= 0);
0121
0122   prop_32 = (fdt32_t *) fdt_getprop(fdt, t, "u", &len);
0123   rtems_test_assert(len == 4);
0124   phandle = fdt32_to_cpu(*prop_32);
0125
0126   node = fdt_node_offset_by_phandle(fdt, phandle);
0127   rtems_test_assert(node == m);
0128
0129   prop_32 = (fdt32_t *) fdt_getprop(fdt, m, "n", &len);
0130   rtems_test_assert(len == 8);
0131   cell = fdt32_to_cpu(prop_32[0]);
0132   rtems_test_assert(cell == 0xdeadbeef);
0133   cell = fdt32_to_cpu(prop_32[1]);
0134   rtems_test_assert(cell == 0x12345678);
0135 }
0136
0137 static void Init(rtems_task_argument arg)
0138 {
0139   TEST_BEGIN();
0140
0141   test();
0142
0143   TEST_END();
0144   rtems_test_exit(0);
0145 }
0146
0147 #define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER
0148 #define CONFIGURE_APPLICATION_NEEDS_SIMPLE_CONSOLE_DRIVER
0149
0150 #define CONFIGURE_MAXIMUM_TASKS 1
0151
0152 #define CONFIGURE_INITIAL_EXTENSIONS RTEMS_TEST_INITIAL_EXTENSION
0153
0154 #define CONFIGURE_RTEMS_INIT_TASKS_TABLE
0155
0156 #define CONFIGURE_INIT
0157
0158 #include <rtems/confdefs.h>