Line data Source code
1 0 : /*
2 : * Copyright (c) 2017 Synopsys.
3 : *
4 : * SPDX-License-Identifier: Apache-2.0
5 : */
6 : #ifndef ZEPHYR_INCLUDE_ARCH_ARC_V2_MPU_ARC_MPU_H_
7 : #define ZEPHYR_INCLUDE_ARCH_ARC_V2_MPU_ARC_MPU_H_
8 :
9 :
10 :
11 0 : #define AUX_MPU_ATTR_UE 0x008 /* allow user execution */
12 0 : #define AUX_MPU_ATTR_UW 0x010 /* allow user write */
13 0 : #define AUX_MPU_ATTR_UR 0x020 /* allow user read */
14 0 : #define AUX_MPU_ATTR_KE 0x040 /* only allow kernel execution */
15 0 : #define AUX_MPU_ATTR_KW 0x080 /* only allow kernel write */
16 0 : #define AUX_MPU_ATTR_KR 0x100 /* only allow kernel read */
17 0 : #define AUX_MPU_ATTR_S 0x8000 /* secure */
18 0 : #define AUX_MPU_ATTR_N 0x0000 /* normal */
19 :
20 :
21 : /*
22 : * a region is dynamic means it can be split into sub regions.
23 : * This attribute is meaningful for ARC MPUv3 which does not support mpu
24 : * entry overlap. For ARC MPUv2, this attribute will be ignored as it
25 : * supports mpu overlap in hardware.
26 : */
27 0 : #define REGION_DYNAMIC 0x800 /* dynamic flag */
28 :
29 :
30 : /* Some helper defines for common regions */
31 :
32 0 : #define REGION_KERNEL_RAM_ATTR \
33 : (AUX_MPU_ATTR_KW | AUX_MPU_ATTR_KR)
34 :
35 0 : #define REGION_KERNEL_ROM_ATTR \
36 : (AUX_MPU_ATTR_KE | AUX_MPU_ATTR_KR)
37 :
38 0 : #define REGION_RAM_ATTR \
39 : (AUX_MPU_ATTR_UW | AUX_MPU_ATTR_UR | \
40 : AUX_MPU_ATTR_KW | AUX_MPU_ATTR_KR)
41 :
42 0 : #define REGION_ROM_ATTR \
43 : (AUX_MPU_ATTR_UE | AUX_MPU_ATTR_UR | \
44 : AUX_MPU_ATTR_KE | AUX_MPU_ATTR_KR)
45 :
46 0 : #define REGION_IO_ATTR \
47 : (AUX_MPU_ATTR_UW | AUX_MPU_ATTR_UR | \
48 : AUX_MPU_ATTR_KW | AUX_MPU_ATTR_KR)
49 :
50 0 : #define REGION_ALL_ATTR \
51 : (AUX_MPU_ATTR_UW | AUX_MPU_ATTR_UR | \
52 : AUX_MPU_ATTR_KW | AUX_MPU_ATTR_KR | \
53 : AUX_MPU_ATTR_KE | AUX_MPU_ATTR_UE)
54 :
55 :
56 0 : #define REGION_32B 0x200
57 0 : #define REGION_64B 0x201
58 0 : #define REGION_128B 0x202
59 0 : #define REGION_256B 0x203
60 0 : #define REGION_512B 0x400
61 0 : #define REGION_1K 0x401
62 0 : #define REGION_2K 0x402
63 0 : #define REGION_4K 0x403
64 0 : #define REGION_8K 0x600
65 0 : #define REGION_16K 0x601
66 0 : #define REGION_32K 0x602
67 0 : #define REGION_64K 0x603
68 0 : #define REGION_128K 0x800
69 0 : #define REGION_256K 0x801
70 0 : #define REGION_512K 0x802
71 0 : #define REGION_1M 0x803
72 0 : #define REGION_2M 0xA00
73 0 : #define REGION_4M 0xA01
74 0 : #define REGION_8M 0xA02
75 0 : #define REGION_16M 0xA03
76 0 : #define REGION_32M 0xC00
77 0 : #define REGION_64M 0xC01
78 0 : #define REGION_128M 0xC02
79 0 : #define REGION_256M 0xC03
80 0 : #define REGION_512M 0xE00
81 0 : #define REGION_1G 0xE01
82 0 : #define REGION_2G 0xE02
83 0 : #define REGION_4G 0xE03
84 :
85 : /* Region definition data structure */
86 0 : struct arc_mpu_region {
87 : /* Region Name */
88 0 : const char *name;
89 : /* Region Base Address */
90 0 : uint32_t base;
91 0 : uint32_t size;
92 : /* Region Attributes */
93 0 : uint32_t attr;
94 : };
95 :
96 0 : #define MPU_REGION_ENTRY(_name, _base, _size, _attr) \
97 : {\
98 : .name = _name, \
99 : .base = _base, \
100 : .size = _size, \
101 : .attr = _attr, \
102 : }
103 :
104 : /* MPU configuration data structure */
105 0 : struct arc_mpu_config {
106 : /* Number of regions */
107 0 : uint32_t num_regions;
108 : /* Regions */
109 0 : struct arc_mpu_region *mpu_regions;
110 : };
111 :
112 : /* Reference to the MPU configuration */
113 0 : extern struct arc_mpu_config mpu_config;
114 :
115 : #endif /* _ARC_CORE_MPU_H_ */
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