1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright 2020 NXP
4 */
5
6 #include <common.h>
7 #include <dm.h>
8 #include <asm/global_data.h>
9 #include <dm/of_extra.h>
10 #include <dm/test.h>
11 #include <test/ut.h>
12
13 DECLARE_GLOBAL_DATA_PTR;
14
dm_test_fdtdec_set_carveout(struct unit_test_state * uts)15 static int dm_test_fdtdec_set_carveout(struct unit_test_state *uts)
16 {
17 struct fdt_memory resv;
18 void *blob;
19 const fdt32_t *prop;
20 int blob_sz, len, offset;
21
22 blob_sz = fdt_totalsize(gd->fdt_blob) + 4096;
23 blob = malloc(blob_sz);
24 ut_assertnonnull(blob);
25
26 /* Make a writable copy of the fdt blob */
27 ut_assertok(fdt_open_into(gd->fdt_blob, blob, blob_sz));
28
29 resv.start = 0x1000;
30 resv.end = 0x2000;
31 ut_assertok(fdtdec_set_carveout(blob, "/a-test", "memory-region", 2,
32 &resv, "test_resv1", NULL, 0, 0));
33
34 resv.start = 0x10000;
35 resv.end = 0x20000;
36 ut_assertok(fdtdec_set_carveout(blob, "/a-test", "memory-region", 1,
37 &resv, "test_resv2", NULL, 0, 0));
38
39 resv.start = 0x100000;
40 resv.end = 0x200000;
41 ut_assertok(fdtdec_set_carveout(blob, "/a-test", "memory-region", 0,
42 &resv, "test_resv3", NULL, 0, 0));
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 UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT | UT_TESTF_FLAT_TREE);
60
dm_test_fdtdec_add_reserved_memory(struct unit_test_state * uts)61 static int dm_test_fdtdec_add_reserved_memory(struct unit_test_state *uts)
62 {
63 struct fdt_memory resv;
64 fdt_addr_t addr;
65 fdt_size_t size;
66 void *blob;
67 unsigned long flags = FDTDEC_RESERVED_MEMORY_NO_MAP;
68 int blob_sz, parent, subnode;
69 uint32_t phandle, phandle1;
70
71 blob_sz = fdt_totalsize(gd->fdt_blob) + 128;
72 blob = malloc(blob_sz);
73 ut_assertnonnull(blob);
74
75 /* Make a writable copy of the fdt blob */
76 ut_assertok(fdt_open_into(gd->fdt_blob, blob, blob_sz));
77
78 /* Insert a memory region in /reserved-memory node */
79 resv.start = 0x1000;
80 resv.end = 0x1fff;
81 ut_assertok(fdtdec_add_reserved_memory(blob, "rsvd_region", &resv,
82 NULL, 0, &phandle, 0));
83
84 /* Test /reserve-memory and its subnode should exist */
85 parent = fdt_path_offset(blob, "/reserved-memory");
86 ut_assert(parent > 0);
87 subnode = fdt_path_offset(blob, "/reserved-memory/rsvd_region");
88 ut_assert(subnode > 0);
89
90 /* Test reg property of /reserved-memory/rsvd_region node */
91 addr = fdtdec_get_addr_size_auto_parent(blob, parent, subnode,
92 "reg", 0, &size, false);
93 ut_assert(addr == resv.start);
94 ut_assert(size == resv.end - resv.start + 1);
95
96 /* Insert another memory region in /reserved-memory node */
97 subnode = fdt_path_offset(blob, "/reserved-memory/rsvd_region1");
98 ut_assert(subnode < 0);
99
100 resv.start = 0x2000;
101 resv.end = 0x2fff;
102 ut_assertok(fdtdec_add_reserved_memory(blob, "rsvd_region1", &resv,
103 NULL, 0, &phandle1, flags));
104 subnode = fdt_path_offset(blob, "/reserved-memory/rsvd_region1");
105 ut_assert(subnode > 0);
106
107 /* check that no-map property is present */
108 ut_assert(fdt_getprop(blob, subnode, "no-map", NULL) > 0);
109
110 /* phandles must be different */
111 ut_assert(phandle != phandle1);
112
113 /*
114 * Insert a 3rd memory region with the same addr/size as the 1st one,
115 * but a new node should not be inserted due to the same addr/size.
116 */
117 resv.start = 0x1000;
118 resv.end = 0x1fff;
119 ut_assertok(fdtdec_add_reserved_memory(blob, "rsvd_region2", &resv,
120 NULL, 0, &phandle1, 0));
121 subnode = fdt_path_offset(blob, "/reserved-memory/rsvd_region2");
122 ut_assert(subnode < 0);
123
124 /* phandle must be same as the 1st one */
125 ut_assert(phandle == phandle1);
126
127 free(blob);
128
129 return 0;
130 }
131 DM_TEST(dm_test_fdtdec_add_reserved_memory,
132 UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT | UT_TESTF_FLAT_TREE);
133