fdtdec.c 3.7 KB

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  1. // SPDX-License-Identifier: GPL-2.0+
  2. /*
  3. * Copyright 2020 NXP
  4. */
  5. #include <common.h>
  6. #include <dm.h>
  7. #include <dm/of_extra.h>
  8. #include <dm/test.h>
  9. #include <test/ut.h>
  10. DECLARE_GLOBAL_DATA_PTR;
  11. static int dm_test_fdtdec_set_carveout(struct unit_test_state *uts)
  12. {
  13. struct fdt_memory resv;
  14. void *blob;
  15. const fdt32_t *prop;
  16. int blob_sz, len, offset;
  17. blob_sz = fdt_totalsize(gd->fdt_blob) + 4096;
  18. blob = malloc(blob_sz);
  19. ut_assertnonnull(blob);
  20. /* Make a writable copy of the fdt blob */
  21. ut_assertok(fdt_open_into(gd->fdt_blob, blob, blob_sz));
  22. resv.start = 0x1000;
  23. resv.end = 0x2000;
  24. ut_assertok(fdtdec_set_carveout(blob, "/a-test",
  25. "memory-region", 2, "test_resv1",
  26. &resv));
  27. resv.start = 0x10000;
  28. resv.end = 0x20000;
  29. ut_assertok(fdtdec_set_carveout(blob, "/a-test",
  30. "memory-region", 1, "test_resv2",
  31. &resv));
  32. resv.start = 0x100000;
  33. resv.end = 0x200000;
  34. ut_assertok(fdtdec_set_carveout(blob, "/a-test",
  35. "memory-region", 0, "test_resv3",
  36. &resv));
  37. offset = fdt_path_offset(blob, "/a-test");
  38. ut_assert(offset > 0);
  39. prop = fdt_getprop(blob, offset, "memory-region", &len);
  40. ut_assertnonnull(prop);
  41. ut_asserteq(len, 12);
  42. ut_assert(fdt_node_offset_by_phandle(blob, fdt32_to_cpu(prop[0])) > 0);
  43. ut_assert(fdt_node_offset_by_phandle(blob, fdt32_to_cpu(prop[1])) > 0);
  44. ut_assert(fdt_node_offset_by_phandle(blob, fdt32_to_cpu(prop[2])) > 0);
  45. free(blob);
  46. return 0;
  47. }
  48. DM_TEST(dm_test_fdtdec_set_carveout,
  49. UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT | UT_TESTF_FLAT_TREE);
  50. static int dm_test_fdtdec_add_reserved_memory(struct unit_test_state *uts)
  51. {
  52. struct fdt_memory resv;
  53. fdt_addr_t addr;
  54. fdt_size_t size;
  55. void *blob;
  56. int blob_sz, parent, subnode;
  57. uint32_t phandle, phandle1;
  58. blob_sz = fdt_totalsize(gd->fdt_blob) + 128;
  59. blob = malloc(blob_sz);
  60. ut_assertnonnull(blob);
  61. /* Make a writable copy of the fdt blob */
  62. ut_assertok(fdt_open_into(gd->fdt_blob, blob, blob_sz));
  63. /* Insert a memory region in /reserved-memory node */
  64. resv.start = 0x1000;
  65. resv.end = 0x1fff;
  66. ut_assertok(fdtdec_add_reserved_memory(blob, "rsvd_region",
  67. &resv, &phandle, false));
  68. /* Test /reserve-memory and its subnode should exist */
  69. parent = fdt_path_offset(blob, "/reserved-memory");
  70. ut_assert(parent > 0);
  71. subnode = fdt_path_offset(blob, "/reserved-memory/rsvd_region");
  72. ut_assert(subnode > 0);
  73. /* Test reg property of /reserved-memory/rsvd_region node */
  74. addr = fdtdec_get_addr_size_auto_parent(blob, parent, subnode,
  75. "reg", 0, &size, false);
  76. ut_assert(addr == resv.start);
  77. ut_assert(size == resv.end - resv.start + 1);
  78. /* Insert another memory region in /reserved-memory node */
  79. subnode = fdt_path_offset(blob, "/reserved-memory/rsvd_region1");
  80. ut_assert(subnode < 0);
  81. resv.start = 0x2000;
  82. resv.end = 0x2fff;
  83. ut_assertok(fdtdec_add_reserved_memory(blob, "rsvd_region1",
  84. &resv, &phandle1, true));
  85. subnode = fdt_path_offset(blob, "/reserved-memory/rsvd_region1");
  86. ut_assert(subnode > 0);
  87. /* check that no-map property is present */
  88. ut_assert(fdt_getprop(blob, subnode, "no-map", NULL) > 0);
  89. /* phandles must be different */
  90. ut_assert(phandle != phandle1);
  91. /*
  92. * Insert a 3rd memory region with the same addr/size as the 1st one,
  93. * but a new node should not be inserted due to the same addr/size.
  94. */
  95. resv.start = 0x1000;
  96. resv.end = 0x1fff;
  97. ut_assertok(fdtdec_add_reserved_memory(blob, "rsvd_region2",
  98. &resv, &phandle1, false));
  99. subnode = fdt_path_offset(blob, "/reserved-memory/rsvd_region2");
  100. ut_assert(subnode < 0);
  101. /* phandle must be same as the 1st one */
  102. ut_assert(phandle == phandle1);
  103. free(blob);
  104. return 0;
  105. }
  106. DM_TEST(dm_test_fdtdec_add_reserved_memory,
  107. UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT | UT_TESTF_FLAT_TREE);