test/dm/fdtdec.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright 2020 NXP
   4  */
   5
   6 #include <common.h>
   7 #include <dm.h>
   8 #include <dm/of_extra.h>
   9 #include <dm/test.h>
  10 #include <test/ut.h>
  11
  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
  19         blob_sz = fdt_totalsize(gd->fdt_blob) + 4096;
  20         blob = malloc(blob_sz);
  21         ut_assertnonnull(blob);
  22
  23         /* Make a writtable copy of the fdt blob */
  24         ut_assertok(fdt_open_into(gd->fdt_blob, blob, blob_sz));
  25
  26         resv.start = 0x1000;
  27         resv.end = 0x2000;
  28         ut_assertok(fdtdec_set_carveout(blob, "/a-test",
  29                                         "memory-region", 2, "test_resv1",
  30                                         &resv));
  31
  32         resv.start = 0x10000;
  33         resv.end = 0x20000;
  34         ut_assertok(fdtdec_set_carveout(blob, "/a-test",
  35                                         "memory-region", 1, "test_resv2",
  36                                         &resv));
  37
  38         resv.start = 0x100000;
  39         resv.end = 0x200000;
  40         ut_assertok(fdtdec_set_carveout(blob, "/a-test",
  41                                         "memory-region", 0, "test_resv3",
  42                                         &resv));
  43
  44         offset = fdt_path_offset(blob, "/a-test");
  45         ut_assert(offset > 0);
  46         prop = fdt_getprop(blob, offset, "memory-region", &len);
  47         ut_assertnonnull(prop);
  48
  49         ut_asserteq(len, 12);
  50         ut_assert(fdt_node_offset_by_phandle(blob, fdt32_to_cpu(prop[0])) > 0);
  51         ut_assert(fdt_node_offset_by_phandle(blob, fdt32_to_cpu(prop[1])) > 0);
  52         ut_assert(fdt_node_offset_by_phandle(blob, fdt32_to_cpu(prop[2])) > 0);
  53
  54         free(blob);
  55
  56         return 0;
  57 }
  58 DM_TEST(dm_test_fdtdec_set_carveout,
  59         DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT | DM_TESTF_FLAT_TREE);