1 /*
2 * Copyright (c) 2020 Intel Corporation
3 *
4 * SPDX-License-Identifier: Apache-2.0
5 */
6
7 #include <zephyr/kernel.h>
8 #include "mem_protect.h"
9
10
11
12 /* Add volatile to disable pre-calculation in compile stage in some
13 * toolchain, such as arcmwdt toolchain.
14 */
15 static volatile K_APP_DMEM(ztest_mem_partition) int var = 1356;
16 static volatile K_APP_BMEM(ztest_mem_partition) int zeroed_var = 20420;
K_APP_BMEM(ztest_mem_partition)17 static volatile K_APP_BMEM(ztest_mem_partition) int bss_var;
18
19 /**
20 * @brief Test assigning global data and BSS variables to memory partitions
21 *
22 * @details Test that system supports application assigning global data and BSS
23 * variables using macros K_APP_BMEM() and K_APP_DMEM
24 *
25 * @ingroup kernel_memprotect_tests
26 */
27 ZTEST_USER(mem_protect_part, test_mem_part_assign_bss_vars_zero)
28 {
29 /* The global variable var will be inside the bounds of
30 * ztest_mem_partition and be initialized with 1356 at boot.
31 */
32 zassert_true(var == 1356);
33
34 /* The global variable zeroed_var will be inside the bounds of
35 * ztest_mem_partition and must be zeroed at boot size K_APP_BMEM() was
36 * used, indicating a BSS variable.
37 */
38 zassert_true(zeroed_var == 0);
39
40 /* The global variable var will be inside the bounds of
41 * ztest_mem_partition and must be zeroed at boot size K_APP_BMEM() was
42 * used, indicating a BSS variable.
43 */
44 zassert_true(bss_var == 0);
45 }
46
47 K_APPMEM_PARTITION_DEFINE(part_arch);
48 K_APP_BMEM(part_arch) uint8_t __aligned(MEM_REGION_ALLOC)
49 buf_arc[MEM_REGION_ALLOC];
50
51 /**
52 * @brief Test partitions sized per the constraints of the MPU hardware
53 *
54 * @details
55 * - MEM_REGION_ALLOC is pre-sized to naturally fit in the target hardware's
56 * memory management granularity. Show that the partition size matches.
57 * - Show that the base address of the partition is properly set, it should
58 * match the base address of buf_arc.
59 *
60 * @ingroup kernel_memprotect_tests
61 */
ZTEST(mem_protect_part,test_mem_part_auto_determ_size)62 ZTEST(mem_protect_part, test_mem_part_auto_determ_size)
63 {
64 zassert_true(part_arch.size == MEM_REGION_ALLOC);
65 zassert_true(part_arch.start == (uintptr_t)buf_arc,
66 "Base address of memory partition not determined at build time");
67 }
68
69 ZTEST_SUITE(mem_protect_part, NULL, NULL, NULL, NULL, NULL);
70
