fdtdec.c 3.8 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 <asm/global_data.h>
  8. #include <dm/of_extra.h>
  9. #include <dm/test.h>
  10. #include <test/ut.h>
  11. DECLARE_GLOBAL_DATA_PTR;
  12. static int dm_test_fdtdec_set_carveout(struct unit_test_state *uts)
  13. {
  14. struct fdt_memory resv;
  15. void *blob;
  16. const fdt32_t *prop;
  17. int blob_sz, len, offset;
  18. blob_sz = fdt_totalsize(gd->fdt_blob) + 4096;
  19. blob = malloc(blob_sz);
  20. ut_assertnonnull(blob);
  21. /* Make a writable copy of the fdt blob */
  22. ut_assertok(fdt_open_into(gd->fdt_blob, blob, blob_sz));
  23. resv.start = 0x1000;
  24. resv.end = 0x2000;
  25. ut_assertok(fdtdec_set_carveout(blob, "/a-test", "memory-region", 2,
  26. &resv, "test_resv1", NULL, 0, 0));
  27. resv.start = 0x10000;
  28. resv.end = 0x20000;
  29. ut_assertok(fdtdec_set_carveout(blob, "/a-test", "memory-region", 1,
  30. &resv, "test_resv2", NULL, 0, 0));
  31. resv.start = 0x100000;
  32. resv.end = 0x200000;
  33. ut_assertok(fdtdec_set_carveout(blob, "/a-test", "memory-region", 0,
  34. &resv, "test_resv3", NULL, 0, 0));
  35. offset = fdt_path_offset(blob, "/a-test");
  36. ut_assert(offset > 0);
  37. prop = fdt_getprop(blob, offset, "memory-region", &len);
  38. ut_assertnonnull(prop);
  39. ut_asserteq(len, 12);
  40. ut_assert(fdt_node_offset_by_phandle(blob, fdt32_to_cpu(prop[0])) > 0);
  41. ut_assert(fdt_node_offset_by_phandle(blob, fdt32_to_cpu(prop[1])) > 0);
  42. ut_assert(fdt_node_offset_by_phandle(blob, fdt32_to_cpu(prop[2])) > 0);
  43. free(blob);
  44. return 0;
  45. }
  46. DM_TEST(dm_test_fdtdec_set_carveout,
  47. UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT | UT_TESTF_FLAT_TREE);
  48. static int dm_test_fdtdec_add_reserved_memory(struct unit_test_state *uts)
  49. {
  50. struct fdt_memory resv;
  51. fdt_addr_t addr;
  52. fdt_size_t size;
  53. void *blob;
  54. unsigned long flags = FDTDEC_RESERVED_MEMORY_NO_MAP;
  55. int blob_sz, parent, subnode;
  56. uint32_t phandle, phandle1;
  57. blob_sz = fdt_totalsize(gd->fdt_blob) + 128;
  58. blob = malloc(blob_sz);
  59. ut_assertnonnull(blob);
  60. /* Make a writable copy of the fdt blob */
  61. ut_assertok(fdt_open_into(gd->fdt_blob, blob, blob_sz));
  62. /* Insert a memory region in /reserved-memory node */
  63. resv.start = 0x1000;
  64. resv.end = 0x1fff;
  65. ut_assertok(fdtdec_add_reserved_memory(blob, "rsvd_region", &resv,
  66. NULL, 0, &phandle, 0));
  67. /* Test /reserve-memory and its subnode should exist */
  68. parent = fdt_path_offset(blob, "/reserved-memory");
  69. ut_assert(parent > 0);
  70. subnode = fdt_path_offset(blob, "/reserved-memory/rsvd_region");
  71. ut_assert(subnode > 0);
  72. /* Test reg property of /reserved-memory/rsvd_region node */
  73. addr = fdtdec_get_addr_size_auto_parent(blob, parent, subnode,
  74. "reg", 0, &size, false);
  75. ut_assert(addr == resv.start);
  76. ut_assert(size == resv.end - resv.start + 1);
  77. /* Insert another memory region in /reserved-memory node */
  78. subnode = fdt_path_offset(blob, "/reserved-memory/rsvd_region1");
  79. ut_assert(subnode < 0);
  80. resv.start = 0x2000;
  81. resv.end = 0x2fff;
  82. ut_assertok(fdtdec_add_reserved_memory(blob, "rsvd_region1", &resv,
  83. NULL, 0, &phandle1, flags));
  84. subnode = fdt_path_offset(blob, "/reserved-memory/rsvd_region1");
  85. ut_assert(subnode > 0);
  86. /* check that no-map property is present */
  87. ut_assert(fdt_getprop(blob, subnode, "no-map", NULL) > 0);
  88. /* phandles must be different */
  89. ut_assert(phandle != phandle1);
  90. /*
  91. * Insert a 3rd memory region with the same addr/size as the 1st one,
  92. * but a new node should not be inserted due to the same addr/size.
  93. */
  94. resv.start = 0x1000;
  95. resv.end = 0x1fff;
  96. ut_assertok(fdtdec_add_reserved_memory(blob, "rsvd_region2", &resv,
  97. NULL, 0, &phandle1, 0));
  98. subnode = fdt_path_offset(blob, "/reserved-memory/rsvd_region2");
  99. ut_assert(subnode < 0);
  100. /* phandle must be same as the 1st one */
  101. ut_assert(phandle == phandle1);
  102. free(blob);
  103. return 0;
  104. }
  105. DM_TEST(dm_test_fdtdec_add_reserved_memory,
  106. UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT | UT_TESTF_FLAT_TREE);