2 * Copyright (c) 2016 NextThing Co
3 * Copyright (c) 2016 Free Electrons
5 * SPDX-License-Identifier: GPL-2.0+
13 #include <linux/sizes.h>
16 #include <test/overlay.h>
18 /* 4k ought to be enough for anybody */
19 #define FDT_COPY_SIZE (4 * SZ_1K)
21 extern u32 __dtb_test_fdt_base_begin
;
22 extern u32 __dtb_test_fdt_overlay_begin
;
23 extern u32 __dtb_test_fdt_overlay_stacked_begin
;
25 static int ut_fdt_getprop_u32_by_index(void *fdt
, const char *path
,
26 const char *name
, int index
,
33 node_off
= fdt_path_offset(fdt
, path
);
37 val
= fdt_getprop(fdt
, node_off
, name
, &len
);
38 if (!val
|| (len
< (sizeof(uint32_t) * (index
+ 1))))
39 return -FDT_ERR_NOTFOUND
;
41 *out
= fdt32_to_cpu(*(val
+ index
));
46 static int ut_fdt_getprop_u32(void *fdt
, const char *path
, const char *name
,
49 return ut_fdt_getprop_u32_by_index(fdt
, path
, name
, 0, out
);
52 static int fdt_getprop_str(void *fdt
, const char *path
, const char *name
,
58 node_off
= fdt_path_offset(fdt
, path
);
62 *out
= fdt_stringlist_get(fdt
, node_off
, name
, 0, &len
);
64 return len
< 0 ? len
: 0;
67 static int fdt_overlay_change_int_property(struct unit_test_state
*uts
)
69 void *fdt
= uts
->priv
;
72 ut_assertok(ut_fdt_getprop_u32(fdt
, "/test-node", "test-int-property",
76 return CMD_RET_SUCCESS
;
78 OVERLAY_TEST(fdt_overlay_change_int_property
, 0);
80 static int fdt_overlay_change_str_property(struct unit_test_state
*uts
)
82 void *fdt
= uts
->priv
;
83 const char *val
= NULL
;
85 ut_assertok(fdt_getprop_str(fdt
, "/test-node", "test-str-property",
87 ut_asserteq_str("foobar", val
);
89 return CMD_RET_SUCCESS
;
91 OVERLAY_TEST(fdt_overlay_change_str_property
, 0);
93 static int fdt_overlay_add_str_property(struct unit_test_state
*uts
)
95 void *fdt
= uts
->priv
;
96 const char *val
= NULL
;
98 ut_assertok(fdt_getprop_str(fdt
, "/test-node", "test-str-property-2",
100 ut_asserteq_str("foobar2", val
);
102 return CMD_RET_SUCCESS
;
104 OVERLAY_TEST(fdt_overlay_add_str_property
, 0);
106 static int fdt_overlay_add_node_by_phandle(struct unit_test_state
*uts
)
108 void *fdt
= uts
->priv
;
111 off
= fdt_path_offset(fdt
, "/test-node/new-node");
114 ut_assertnonnull(fdt_getprop(fdt
, off
, "new-property", NULL
));
116 return CMD_RET_SUCCESS
;
118 OVERLAY_TEST(fdt_overlay_add_node_by_phandle
, 0);
120 static int fdt_overlay_add_node_by_path(struct unit_test_state
*uts
)
122 void *fdt
= uts
->priv
;
125 off
= fdt_path_offset(fdt
, "/new-node");
128 ut_assertnonnull(fdt_getprop(fdt
, off
, "new-property", NULL
));
130 return CMD_RET_SUCCESS
;
132 OVERLAY_TEST(fdt_overlay_add_node_by_path
, 0);
134 static int fdt_overlay_add_subnode_property(struct unit_test_state
*uts
)
136 void *fdt
= uts
->priv
;
139 off
= fdt_path_offset(fdt
, "/test-node/sub-test-node");
142 ut_assertnonnull(fdt_getprop(fdt
, off
, "sub-test-property", NULL
));
143 ut_assertnonnull(fdt_getprop(fdt
, off
, "new-sub-test-property", NULL
));
145 return CMD_RET_SUCCESS
;
147 OVERLAY_TEST(fdt_overlay_add_subnode_property
, 0);
149 static int fdt_overlay_local_phandle(struct unit_test_state
*uts
)
151 uint32_t local_phandle
;
152 void *fdt
= uts
->priv
;
156 off
= fdt_path_offset(fdt
, "/new-local-node");
159 local_phandle
= fdt_get_phandle(fdt
, off
);
160 ut_assert(local_phandle
);
162 ut_assertok(ut_fdt_getprop_u32_by_index(fdt
, "/", "test-several-phandle",
164 ut_asserteq(local_phandle
, val
);
166 ut_assertok(ut_fdt_getprop_u32_by_index(fdt
, "/", "test-several-phandle",
168 ut_asserteq(local_phandle
, val
);
170 return CMD_RET_SUCCESS
;
172 OVERLAY_TEST(fdt_overlay_local_phandle
, 0);
174 static int fdt_overlay_local_phandles(struct unit_test_state
*uts
)
176 uint32_t local_phandle
, test_phandle
;
177 void *fdt
= uts
->priv
;
181 off
= fdt_path_offset(fdt
, "/new-local-node");
184 local_phandle
= fdt_get_phandle(fdt
, off
);
185 ut_assert(local_phandle
);
187 off
= fdt_path_offset(fdt
, "/test-node");
190 test_phandle
= fdt_get_phandle(fdt
, off
);
191 ut_assert(test_phandle
);
193 ut_assertok(ut_fdt_getprop_u32_by_index(fdt
, "/", "test-phandle", 0,
195 ut_asserteq(test_phandle
, val
);
197 ut_assertok(ut_fdt_getprop_u32_by_index(fdt
, "/", "test-phandle", 1,
199 ut_asserteq(local_phandle
, val
);
201 return CMD_RET_SUCCESS
;
203 OVERLAY_TEST(fdt_overlay_local_phandles
, 0);
205 static int fdt_overlay_stacked(struct unit_test_state
*uts
)
207 void *fdt
= uts
->priv
;
210 ut_assertok(ut_fdt_getprop_u32(fdt
, "/new-local-node",
211 "stacked-test-int-property", &val
));
212 ut_asserteq(43, val
);
214 return CMD_RET_SUCCESS
;
216 OVERLAY_TEST(fdt_overlay_stacked
, 0);
218 int do_ut_overlay(cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
220 struct unit_test
*tests
= ll_entry_start(struct unit_test
,
222 const int n_ents
= ll_entry_count(struct unit_test
, overlay_test
);
223 struct unit_test_state
*uts
;
224 struct unit_test
*test
;
225 void *fdt_base
= &__dtb_test_fdt_base_begin
;
226 void *fdt_overlay
= &__dtb_test_fdt_overlay_begin
;
227 void *fdt_overlay_stacked
= &__dtb_test_fdt_overlay_stacked_begin
;
228 void *fdt_base_copy
, *fdt_overlay_copy
, *fdt_overlay_stacked_copy
;
231 uts
= calloc(1, sizeof(*uts
));
235 ut_assertok(fdt_check_header(fdt_base
));
236 ut_assertok(fdt_check_header(fdt_overlay
));
238 fdt_base_copy
= malloc(FDT_COPY_SIZE
);
241 uts
->priv
= fdt_base_copy
;
243 fdt_overlay_copy
= malloc(FDT_COPY_SIZE
);
244 if (!fdt_overlay_copy
)
247 fdt_overlay_stacked_copy
= malloc(FDT_COPY_SIZE
);
248 if (!fdt_overlay_stacked_copy
)
252 * Resize the FDT to 4k so that we have room to operate on
254 * (and relocate it since the memory might be mapped
257 ut_assertok(fdt_open_into(fdt_base
, fdt_base_copy
, FDT_COPY_SIZE
));
260 * Resize the overlay to 4k so that we have room to operate on
262 * (and relocate it since the memory might be mapped
265 ut_assertok(fdt_open_into(fdt_overlay
, fdt_overlay_copy
,
269 * Resize the stacked overlay to 4k so that we have room to operate on
271 * (and relocate it since the memory might be mapped
274 ut_assertok(fdt_open_into(fdt_overlay_stacked
, fdt_overlay_stacked_copy
,
277 /* Apply the overlay */
278 ut_assertok(fdt_overlay_apply(fdt_base_copy
, fdt_overlay_copy
));
280 /* Apply the stacked overlay */
281 ut_assertok(fdt_overlay_apply(fdt_base_copy
, fdt_overlay_stacked_copy
));
284 printf("Running %d environment tests\n", n_ents
);
286 for (test
= tests
; test
< tests
+ n_ents
; test
++) {
287 if (argc
> 1 && strcmp(argv
[1], test
->name
))
289 printf("Test: %s\n", test
->name
);
291 uts
->start
= mallinfo();
296 printf("Failures: %d\n", uts
->fail_count
);
297 if (!uts
->fail_count
)
300 ret
= CMD_RET_FAILURE
;
302 free(fdt_overlay_stacked_copy
);
304 free(fdt_overlay_copy
);