git.sur5r.net Git - u-boot/blob - test/overlay/cmd_ut_overlay.c

   1 /*
   2  * Copyright (c) 2016 NextThing Co
   3  * Copyright (c) 2016 Free Electrons
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #include <common.h>
   9 #include <command.h>
  10 #include <errno.h>
  11 #include <malloc.h>
  12
  13 #include <linux/sizes.h>
  14
  15 #include <test/ut.h>
  16 #include <test/overlay.h>
  17 #include <test/suites.h>
  18
  19 /* 4k ought to be enough for anybody */
  20 #define FDT_COPY_SIZE   (4 * SZ_1K)
  21
  22 extern u32 __dtb_test_fdt_base_begin;
  23 extern u32 __dtb_test_fdt_overlay_begin;
  24 extern u32 __dtb_test_fdt_overlay_stacked_begin;
  25
  26 static int ut_fdt_getprop_u32_by_index(void *fdt, const char *path,
  27                                     const char *name, int index,
  28                                     u32 *out)
  29 {
  30         const fdt32_t *val;
  31         int node_off;
  32         int len;
  33
  34         node_off = fdt_path_offset(fdt, path);
  35         if (node_off < 0)
  36                 return node_off;
  37
  38         val = fdt_getprop(fdt, node_off, name, &len);
  39         if (!val || (len < (sizeof(uint32_t) * (index + 1))))
  40                 return -FDT_ERR_NOTFOUND;
  41
  42         *out = fdt32_to_cpu(*(val + index));
  43
  44         return 0;
  45 }
  46
  47 static int ut_fdt_getprop_u32(void *fdt, const char *path, const char *name,
  48                            u32 *out)
  49 {
  50         return ut_fdt_getprop_u32_by_index(fdt, path, name, 0, out);
  51 }
  52
  53 static int fdt_getprop_str(void *fdt, const char *path, const char *name,
  54                            const char **out)
  55 {
  56         int node_off;
  57         int len;
  58
  59         node_off = fdt_path_offset(fdt, path);
  60         if (node_off < 0)
  61                 return node_off;
  62
  63         *out = fdt_stringlist_get(fdt, node_off, name, 0, &len);
  64
  65         return len < 0 ? len : 0;
  66 }
  67
  68 static int fdt_overlay_change_int_property(struct unit_test_state *uts)
  69 {
  70         void *fdt = uts->priv;
  71         u32 val = 0;
  72
  73         ut_assertok(ut_fdt_getprop_u32(fdt, "/test-node", "test-int-property",
  74                                     &val));
  75         ut_asserteq(43, val);
  76
  77         return CMD_RET_SUCCESS;
  78 }
  79 OVERLAY_TEST(fdt_overlay_change_int_property, 0);
  80
  81 static int fdt_overlay_change_str_property(struct unit_test_state *uts)
  82 {
  83         void *fdt = uts->priv;
  84         const char *val = NULL;
  85
  86         ut_assertok(fdt_getprop_str(fdt, "/test-node", "test-str-property",
  87                                     &val));
  88         ut_asserteq_str("foobar", val);
  89
  90         return CMD_RET_SUCCESS;
  91 }
  92 OVERLAY_TEST(fdt_overlay_change_str_property, 0);
  93
  94 static int fdt_overlay_add_str_property(struct unit_test_state *uts)
  95 {
  96         void *fdt = uts->priv;
  97         const char *val = NULL;
  98
  99         ut_assertok(fdt_getprop_str(fdt, "/test-node", "test-str-property-2",
 100                                     &val));
 101         ut_asserteq_str("foobar2", val);
 102
 103         return CMD_RET_SUCCESS;
 104 }
 105 OVERLAY_TEST(fdt_overlay_add_str_property, 0);
 106
 107 static int fdt_overlay_add_node_by_phandle(struct unit_test_state *uts)
 108 {
 109         void *fdt = uts->priv;
 110         int off;
 111
 112         off = fdt_path_offset(fdt, "/test-node/new-node");
 113         ut_assert(off >= 0);
 114
 115         ut_assertnonnull(fdt_getprop(fdt, off, "new-property", NULL));
 116
 117         return CMD_RET_SUCCESS;
 118 }
 119 OVERLAY_TEST(fdt_overlay_add_node_by_phandle, 0);
 120
 121 static int fdt_overlay_add_node_by_path(struct unit_test_state *uts)
 122 {
 123         void *fdt = uts->priv;
 124         int off;
 125
 126         off = fdt_path_offset(fdt, "/new-node");
 127         ut_assert(off >= 0);
 128
 129         ut_assertnonnull(fdt_getprop(fdt, off, "new-property", NULL));
 130
 131         return CMD_RET_SUCCESS;
 132 }
 133 OVERLAY_TEST(fdt_overlay_add_node_by_path, 0);
 134
 135 static int fdt_overlay_add_subnode_property(struct unit_test_state *uts)
 136 {
 137         void *fdt = uts->priv;
 138         int off;
 139
 140         off = fdt_path_offset(fdt, "/test-node/sub-test-node");
 141         ut_assert(off >= 0);
 142
 143         ut_assertnonnull(fdt_getprop(fdt, off, "sub-test-property", NULL));
 144         ut_assertnonnull(fdt_getprop(fdt, off, "new-sub-test-property", NULL));
 145
 146         return CMD_RET_SUCCESS;
 147 }
 148 OVERLAY_TEST(fdt_overlay_add_subnode_property, 0);
 149
 150 static int fdt_overlay_local_phandle(struct unit_test_state *uts)
 151 {
 152         uint32_t local_phandle;
 153         void *fdt = uts->priv;
 154         u32 val = 0;
 155         int off;
 156
 157         off = fdt_path_offset(fdt, "/new-local-node");
 158         ut_assert(off >= 0);
 159
 160         local_phandle = fdt_get_phandle(fdt, off);
 161         ut_assert(local_phandle);
 162
 163         ut_assertok(ut_fdt_getprop_u32_by_index(fdt, "/", "test-several-phandle",
 164                                              0, &val));
 165         ut_asserteq(local_phandle, val);
 166
 167         ut_assertok(ut_fdt_getprop_u32_by_index(fdt, "/", "test-several-phandle",
 168                                              1, &val));
 169         ut_asserteq(local_phandle, val);
 170
 171         return CMD_RET_SUCCESS;
 172 }
 173 OVERLAY_TEST(fdt_overlay_local_phandle, 0);
 174
 175 static int fdt_overlay_local_phandles(struct unit_test_state *uts)
 176 {
 177         uint32_t local_phandle, test_phandle;
 178         void *fdt = uts->priv;
 179         u32 val = 0;
 180         int off;
 181
 182         off = fdt_path_offset(fdt, "/new-local-node");
 183         ut_assert(off >= 0);
 184
 185         local_phandle = fdt_get_phandle(fdt, off);
 186         ut_assert(local_phandle);
 187
 188         off = fdt_path_offset(fdt, "/test-node");
 189         ut_assert(off >= 0);
 190
 191         test_phandle = fdt_get_phandle(fdt, off);
 192         ut_assert(test_phandle);
 193
 194         ut_assertok(ut_fdt_getprop_u32_by_index(fdt, "/", "test-phandle", 0,
 195                                              &val));
 196         ut_asserteq(test_phandle, val);
 197
 198         ut_assertok(ut_fdt_getprop_u32_by_index(fdt, "/", "test-phandle", 1,
 199                                              &val));
 200         ut_asserteq(local_phandle, val);
 201
 202         return CMD_RET_SUCCESS;
 203 }
 204 OVERLAY_TEST(fdt_overlay_local_phandles, 0);
 205
 206 static int fdt_overlay_stacked(struct unit_test_state *uts)
 207 {
 208         void *fdt = uts->priv;
 209         u32 val = 0;
 210
 211         ut_assertok(ut_fdt_getprop_u32(fdt, "/new-local-node",
 212                                        "stacked-test-int-property", &val));
 213         ut_asserteq(43, val);
 214
 215         return CMD_RET_SUCCESS;
 216 }
 217 OVERLAY_TEST(fdt_overlay_stacked, 0);
 218
 219 int do_ut_overlay(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 220 {
 221         struct unit_test *tests = ll_entry_start(struct unit_test,
 222                                                  overlay_test);
 223         const int n_ents = ll_entry_count(struct unit_test, overlay_test);
 224         struct unit_test_state *uts;
 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;
 229         int ret = -ENOMEM;
 230
 231         uts = calloc(1, sizeof(*uts));
 232         if (!uts)
 233                 return -ENOMEM;
 234
 235         ut_assertok(fdt_check_header(fdt_base));
 236         ut_assertok(fdt_check_header(fdt_overlay));
 237
 238         fdt_base_copy = malloc(FDT_COPY_SIZE);
 239         if (!fdt_base_copy)
 240                 goto err1;
 241         uts->priv = fdt_base_copy;
 242
 243         fdt_overlay_copy = malloc(FDT_COPY_SIZE);
 244         if (!fdt_overlay_copy)
 245                 goto err2;
 246
 247         fdt_overlay_stacked_copy = malloc(FDT_COPY_SIZE);
 248         if (!fdt_overlay_stacked_copy)
 249                 goto err3;
 250
 251         /*
 252          * Resize the FDT to 4k so that we have room to operate on
 253          *
 254          * (and relocate it since the memory might be mapped
 255          * read-only)
 256          */
 257         ut_assertok(fdt_open_into(fdt_base, fdt_base_copy, FDT_COPY_SIZE));
 258
 259         /*
 260          * Resize the overlay to 4k so that we have room to operate on
 261          *
 262          * (and relocate it since the memory might be mapped
 263          * read-only)
 264          */
 265         ut_assertok(fdt_open_into(fdt_overlay, fdt_overlay_copy,
 266                                   FDT_COPY_SIZE));
 267
 268         /*
 269          * Resize the stacked overlay to 4k so that we have room to operate on
 270          *
 271          * (and relocate it since the memory might be mapped
 272          * read-only)
 273          */
 274         ut_assertok(fdt_open_into(fdt_overlay_stacked, fdt_overlay_stacked_copy,
 275                                   FDT_COPY_SIZE));
 276
 277         /* Apply the overlay */
 278         ut_assertok(fdt_overlay_apply(fdt_base_copy, fdt_overlay_copy));
 279
 280         /* Apply the stacked overlay */
 281         ut_assertok(fdt_overlay_apply(fdt_base_copy, fdt_overlay_stacked_copy));
 282
 283         ret = cmd_ut_category("overlay", tests, n_ents, argc, argv);
 284
 285         free(fdt_overlay_stacked_copy);
 286 err3:
 287         free(fdt_overlay_copy);
 288 err2:
 289         free(fdt_base_copy);
 290 err1:
 291         free(uts);
 292
 293         return ret;
 294 }