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7#include <common.h>
8#include <command.h>
9#include <errno.h>
10#include <malloc.h>
11
12#include <linux/sizes.h>
13
14#include <test/ut.h>
15#include <test/overlay.h>
16#include <test/suites.h>
17
18
19#define FDT_COPY_SIZE (4 * SZ_1K)
20
21extern u32 __dtb_test_fdt_base_begin;
22extern u32 __dtb_test_fdt_overlay_begin;
23extern u32 __dtb_test_fdt_overlay_stacked_begin;
24
25static int ut_fdt_getprop_u32_by_index(void *fdt, const char *path,
26 const char *name, int index,
27 u32 *out)
28{
29 const fdt32_t *val;
30 int node_off;
31 int len;
32
33 node_off = fdt_path_offset(fdt, path);
34 if (node_off < 0)
35 return node_off;
36
37 val = fdt_getprop(fdt, node_off, name, &len);
38 if (!val || (len < (sizeof(uint32_t) * (index + 1))))
39 return -FDT_ERR_NOTFOUND;
40
41 *out = fdt32_to_cpu(*(val + index));
42
43 return 0;
44}
45
46static int ut_fdt_getprop_u32(void *fdt, const char *path, const char *name,
47 u32 *out)
48{
49 return ut_fdt_getprop_u32_by_index(fdt, path, name, 0, out);
50}
51
52static int fdt_getprop_str(void *fdt, const char *path, const char *name,
53 const char **out)
54{
55 int node_off;
56 int len;
57
58 node_off = fdt_path_offset(fdt, path);
59 if (node_off < 0)
60 return node_off;
61
62 *out = fdt_stringlist_get(fdt, node_off, name, 0, &len);
63
64 return len < 0 ? len : 0;
65}
66
67static int fdt_overlay_change_int_property(struct unit_test_state *uts)
68{
69 void *fdt = uts->priv;
70 u32 val = 0;
71
72 ut_assertok(ut_fdt_getprop_u32(fdt, "/test-node", "test-int-property",
73 &val));
74 ut_asserteq(43, val);
75
76 return CMD_RET_SUCCESS;
77}
78OVERLAY_TEST(fdt_overlay_change_int_property, 0);
79
80static int fdt_overlay_change_str_property(struct unit_test_state *uts)
81{
82 void *fdt = uts->priv;
83 const char *val = NULL;
84
85 ut_assertok(fdt_getprop_str(fdt, "/test-node", "test-str-property",
86 &val));
87 ut_asserteq_str("foobar", val);
88
89 return CMD_RET_SUCCESS;
90}
91OVERLAY_TEST(fdt_overlay_change_str_property, 0);
92
93static int fdt_overlay_add_str_property(struct unit_test_state *uts)
94{
95 void *fdt = uts->priv;
96 const char *val = NULL;
97
98 ut_assertok(fdt_getprop_str(fdt, "/test-node", "test-str-property-2",
99 &val));
100 ut_asserteq_str("foobar2", val);
101
102 return CMD_RET_SUCCESS;
103}
104OVERLAY_TEST(fdt_overlay_add_str_property, 0);
105
106static int fdt_overlay_add_node_by_phandle(struct unit_test_state *uts)
107{
108 void *fdt = uts->priv;
109 int off;
110
111 off = fdt_path_offset(fdt, "/test-node/new-node");
112 ut_assert(off >= 0);
113
114 ut_assertnonnull(fdt_getprop(fdt, off, "new-property", NULL));
115
116 return CMD_RET_SUCCESS;
117}
118OVERLAY_TEST(fdt_overlay_add_node_by_phandle, 0);
119
120static int fdt_overlay_add_node_by_path(struct unit_test_state *uts)
121{
122 void *fdt = uts->priv;
123 int off;
124
125 off = fdt_path_offset(fdt, "/new-node");
126 ut_assert(off >= 0);
127
128 ut_assertnonnull(fdt_getprop(fdt, off, "new-property", NULL));
129
130 return CMD_RET_SUCCESS;
131}
132OVERLAY_TEST(fdt_overlay_add_node_by_path, 0);
133
134static int fdt_overlay_add_subnode_property(struct unit_test_state *uts)
135{
136 void *fdt = uts->priv;
137 int off;
138
139 off = fdt_path_offset(fdt, "/test-node/sub-test-node");
140 ut_assert(off >= 0);
141
142 ut_assertnonnull(fdt_getprop(fdt, off, "sub-test-property", NULL));
143 ut_assertnonnull(fdt_getprop(fdt, off, "new-sub-test-property", NULL));
144
145 return CMD_RET_SUCCESS;
146}
147OVERLAY_TEST(fdt_overlay_add_subnode_property, 0);
148
149static int fdt_overlay_local_phandle(struct unit_test_state *uts)
150{
151 uint32_t local_phandle;
152 void *fdt = uts->priv;
153 u32 val = 0;
154 int off;
155
156 off = fdt_path_offset(fdt, "/new-local-node");
157 ut_assert(off >= 0);
158
159 local_phandle = fdt_get_phandle(fdt, off);
160 ut_assert(local_phandle);
161
162 ut_assertok(ut_fdt_getprop_u32_by_index(fdt, "/", "test-several-phandle",
163 0, &val));
164 ut_asserteq(local_phandle, val);
165
166 ut_assertok(ut_fdt_getprop_u32_by_index(fdt, "/", "test-several-phandle",
167 1, &val));
168 ut_asserteq(local_phandle, val);
169
170 return CMD_RET_SUCCESS;
171}
172OVERLAY_TEST(fdt_overlay_local_phandle, 0);
173
174static int fdt_overlay_local_phandles(struct unit_test_state *uts)
175{
176 uint32_t local_phandle, test_phandle;
177 void *fdt = uts->priv;
178 u32 val = 0;
179 int off;
180
181 off = fdt_path_offset(fdt, "/new-local-node");
182 ut_assert(off >= 0);
183
184 local_phandle = fdt_get_phandle(fdt, off);
185 ut_assert(local_phandle);
186
187 off = fdt_path_offset(fdt, "/test-node");
188 ut_assert(off >= 0);
189
190 test_phandle = fdt_get_phandle(fdt, off);
191 ut_assert(test_phandle);
192
193 ut_assertok(ut_fdt_getprop_u32_by_index(fdt, "/", "test-phandle", 0,
194 &val));
195 ut_asserteq(test_phandle, val);
196
197 ut_assertok(ut_fdt_getprop_u32_by_index(fdt, "/", "test-phandle", 1,
198 &val));
199 ut_asserteq(local_phandle, val);
200
201 return CMD_RET_SUCCESS;
202}
203OVERLAY_TEST(fdt_overlay_local_phandles, 0);
204
205static int fdt_overlay_stacked(struct unit_test_state *uts)
206{
207 void *fdt = uts->priv;
208 u32 val = 0;
209
210 ut_assertok(ut_fdt_getprop_u32(fdt, "/new-local-node",
211 "stacked-test-int-property", &val));
212 ut_asserteq(43, val);
213
214 return CMD_RET_SUCCESS;
215}
216OVERLAY_TEST(fdt_overlay_stacked, 0);
217
218int do_ut_overlay(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
219{
220 struct unit_test *tests = ll_entry_start(struct unit_test,
221 overlay_test);
222 const int n_ents = ll_entry_count(struct unit_test, overlay_test);
223 struct unit_test_state *uts;
224 void *fdt_base = &__dtb_test_fdt_base_begin;
225 void *fdt_overlay = &__dtb_test_fdt_overlay_begin;
226 void *fdt_overlay_stacked = &__dtb_test_fdt_overlay_stacked_begin;
227 void *fdt_base_copy, *fdt_overlay_copy, *fdt_overlay_stacked_copy;
228 int ret = -ENOMEM;
229
230 uts = calloc(1, sizeof(*uts));
231 if (!uts)
232 return -ENOMEM;
233
234 ut_assertok(fdt_check_header(fdt_base));
235 ut_assertok(fdt_check_header(fdt_overlay));
236
237 fdt_base_copy = malloc(FDT_COPY_SIZE);
238 if (!fdt_base_copy)
239 goto err1;
240 uts->priv = fdt_base_copy;
241
242 fdt_overlay_copy = malloc(FDT_COPY_SIZE);
243 if (!fdt_overlay_copy)
244 goto err2;
245
246 fdt_overlay_stacked_copy = malloc(FDT_COPY_SIZE);
247 if (!fdt_overlay_stacked_copy)
248 goto err3;
249
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253
254
255
256 ut_assertok(fdt_open_into(fdt_base, fdt_base_copy, FDT_COPY_SIZE));
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263
264 ut_assertok(fdt_open_into(fdt_overlay, fdt_overlay_copy,
265 FDT_COPY_SIZE));
266
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269
270
271
272
273 ut_assertok(fdt_open_into(fdt_overlay_stacked, fdt_overlay_stacked_copy,
274 FDT_COPY_SIZE));
275
276
277 ut_assertok(fdt_overlay_apply(fdt_base_copy, fdt_overlay_copy));
278
279
280 ut_assertok(fdt_overlay_apply(fdt_base_copy, fdt_overlay_stacked_copy));
281
282 ret = cmd_ut_category("overlay", tests, n_ents, argc, argv);
283
284 free(fdt_overlay_stacked_copy);
285err3:
286 free(fdt_overlay_copy);
287err2:
288 free(fdt_base_copy);
289err1:
290 free(uts);
291
292 return ret;
293}
294