1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright 2020 NXP
4 */
5
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
12 DECLARE_GLOBAL_DATA_PTR;
13
dm_test_fdtdec_set_carveout(struct unit_test_state * uts)14 static int dm_test_fdtdec_set_carveout(struct unit_test_state *uts)
15 {
16 struct fdt_memory resv;
17 void *blob;
18 const fdt32_t *prop;
19 int blob_sz, len, offset;
20
21 blob_sz = fdt_totalsize(gd->fdt_blob) + 4096;
22 blob = malloc(blob_sz);
23 ut_assertnonnull(blob);
24
25 /* Make a writable copy of the fdt blob */
26 ut_assertok(fdt_open_into(gd->fdt_blob, blob, blob_sz));
27
28 resv.start = 0x1000;
29 resv.end = 0x2000;
30 ut_assertok(fdtdec_set_carveout(blob, "/a-test", "memory-region", 2,
31 &resv, "test_resv1", NULL, 0, 0));
32
33 resv.start = 0x10000;
34 resv.end = 0x20000;
35 ut_assertok(fdtdec_set_carveout(blob, "/a-test", "memory-region", 1,
36 &resv, "test_resv2", NULL, 0, 0));
37
38 resv.start = 0x100000;
39 resv.end = 0x200000;
40 ut_assertok(fdtdec_set_carveout(blob, "/a-test", "memory-region", 0,
41 &resv, "test_resv3", NULL, 0, 0));
42
43 offset = fdt_path_offset(blob, "/a-test");
44 ut_assert(offset > 0);
45 prop = fdt_getprop(blob, offset, "memory-region", &len);
46 ut_assertnonnull(prop);
47
48 ut_asserteq(len, 12);
49 ut_assert(fdt_node_offset_by_phandle(blob, fdt32_to_cpu(prop[0])) > 0);
50 ut_assert(fdt_node_offset_by_phandle(blob, fdt32_to_cpu(prop[1])) > 0);
51 ut_assert(fdt_node_offset_by_phandle(blob, fdt32_to_cpu(prop[2])) > 0);
52
53 free(blob);
54
55 return 0;
56 }
57 DM_TEST(dm_test_fdtdec_set_carveout,
58 UTF_SCAN_PDATA | UTF_SCAN_FDT | UTF_FLAT_TREE);
59
dm_test_fdtdec_add_reserved_memory(struct unit_test_state * uts)60 static int dm_test_fdtdec_add_reserved_memory(struct unit_test_state *uts)
61 {
62 struct fdt_memory resv;
63 fdt_addr_t addr;
64 fdt_size_t size;
65 void *blob;
66 unsigned long flags = FDTDEC_RESERVED_MEMORY_NO_MAP;
67 int blob_sz, parent, subnode;
68 uint32_t phandle, phandle1;
69
70 blob_sz = fdt_totalsize(gd->fdt_blob) + 128;
71 blob = malloc(blob_sz);
72 ut_assertnonnull(blob);
73
74 /* Make a writable copy of the fdt blob */
75 ut_assertok(fdt_open_into(gd->fdt_blob, blob, blob_sz));
76
77 /* Insert a memory region in /reserved-memory node */
78 resv.start = 0x1000;
79 resv.end = 0x1fff;
80 ut_assertok(fdtdec_add_reserved_memory(blob, "rsvd_region", &resv,
81 NULL, 0, &phandle, 0));
82
83 /* Test /reserve-memory and its subnode should exist */
84 parent = fdt_path_offset(blob, "/reserved-memory");
85 ut_assert(parent > 0);
86 subnode = fdt_path_offset(blob, "/reserved-memory/rsvd_region");
87 ut_assert(subnode > 0);
88
89 /* Test reg property of /reserved-memory/rsvd_region node */
90 addr = fdtdec_get_addr_size_auto_parent(blob, parent, subnode,
91 "reg", 0, &size, false);
92 ut_assert(addr == resv.start);
93 ut_assert(size == resv.end - resv.start + 1);
94
95 /* Insert another memory region in /reserved-memory node */
96 subnode = fdt_path_offset(blob, "/reserved-memory/rsvd_region1");
97 ut_assert(subnode < 0);
98
99 resv.start = 0x2000;
100 resv.end = 0x2fff;
101 ut_assertok(fdtdec_add_reserved_memory(blob, "rsvd_region1", &resv,
102 NULL, 0, &phandle1, flags));
103 subnode = fdt_path_offset(blob, "/reserved-memory/rsvd_region1");
104 ut_assert(subnode > 0);
105
106 /* check that no-map property is present */
107 ut_assert(fdt_getprop(blob, subnode, "no-map", NULL) > 0);
108
109 /* phandles must be different */
110 ut_assert(phandle != phandle1);
111
112 /*
113 * Insert a 3rd memory region with the same addr/size as the 1st one,
114 * but a new node should not be inserted due to the same addr/size.
115 */
116 resv.start = 0x1000;
117 resv.end = 0x1fff;
118 ut_assertok(fdtdec_add_reserved_memory(blob, "rsvd_region2", &resv,
119 NULL, 0, &phandle1, 0));
120 subnode = fdt_path_offset(blob, "/reserved-memory/rsvd_region2");
121 ut_assert(subnode < 0);
122
123 /* phandle must be same as the 1st one */
124 ut_assert(phandle == phandle1);
125
126 free(blob);
127
128 return 0;
129 }
130 DM_TEST(dm_test_fdtdec_add_reserved_memory,
131 UTF_SCAN_PDATA | UTF_SCAN_FDT | UTF_FLAT_TREE);
132