Zephyr API Documentation
4.0.0-rc2
A Scalable Open Source RTOS
Loading...
Searching...
No Matches
arc_mpu.h
Go to the documentation of this file.
1
/*
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
#define AUX_MPU_ATTR_UE 0x008
/* allow user execution */
12
#define AUX_MPU_ATTR_UW 0x010
/* allow user write */
13
#define AUX_MPU_ATTR_UR 0x020
/* allow user read */
14
#define AUX_MPU_ATTR_KE 0x040
/* only allow kernel execution */
15
#define AUX_MPU_ATTR_KW 0x080
/* only allow kernel write */
16
#define AUX_MPU_ATTR_KR 0x100
/* only allow kernel read */
17
#define AUX_MPU_ATTR_S 0x8000
/* secure */
18
#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
#define REGION_DYNAMIC 0x800
/* dynamic flag */
28
29
30
/* Some helper defines for common regions */
31
32
#define REGION_KERNEL_RAM_ATTR \
33
(AUX_MPU_ATTR_KW | AUX_MPU_ATTR_KR)
34
35
#define REGION_KERNEL_ROM_ATTR \
36
(AUX_MPU_ATTR_KE | AUX_MPU_ATTR_KR)
37
38
#define REGION_RAM_ATTR \
39
(AUX_MPU_ATTR_UW | AUX_MPU_ATTR_UR | \
40
AUX_MPU_ATTR_KW | AUX_MPU_ATTR_KR)
41
42
#define REGION_ROM_ATTR \
43
(AUX_MPU_ATTR_UE | AUX_MPU_ATTR_UR | \
44
AUX_MPU_ATTR_KE | AUX_MPU_ATTR_KR)
45
46
#define REGION_IO_ATTR \
47
(AUX_MPU_ATTR_UW | AUX_MPU_ATTR_UR | \
48
AUX_MPU_ATTR_KW | AUX_MPU_ATTR_KR)
49
50
#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
#define REGION_32B 0x200
57
#define REGION_64B 0x201
58
#define REGION_128B 0x202
59
#define REGION_256B 0x203
60
#define REGION_512B 0x400
61
#define REGION_1K 0x401
62
#define REGION_2K 0x402
63
#define REGION_4K 0x403
64
#define REGION_8K 0x600
65
#define REGION_16K 0x601
66
#define REGION_32K 0x602
67
#define REGION_64K 0x603
68
#define REGION_128K 0x800
69
#define REGION_256K 0x801
70
#define REGION_512K 0x802
71
#define REGION_1M 0x803
72
#define REGION_2M 0xA00
73
#define REGION_4M 0xA01
74
#define REGION_8M 0xA02
75
#define REGION_16M 0xA03
76
#define REGION_32M 0xC00
77
#define REGION_64M 0xC01
78
#define REGION_128M 0xC02
79
#define REGION_256M 0xC03
80
#define REGION_512M 0xE00
81
#define REGION_1G 0xE01
82
#define REGION_2G 0xE02
83
#define REGION_4G 0xE03
84
85
/* Region definition data structure */
86
struct
arc_mpu_region
{
87
/* Region Name */
88
const
char
*
name
;
89
/* Region Base Address */
90
uint32_t
base
;
91
uint32_t
size
;
92
/* Region Attributes */
93
uint32_t
attr
;
94
};
95
96
#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
struct
arc_mpu_config
{
106
/* Number of regions */
107
uint32_t
num_regions
;
108
/* Regions */
109
struct
arc_mpu_region
*
mpu_regions
;
110
};
111
112
/* Reference to the MPU configuration */
113
extern
struct
arc_mpu_config
mpu_config
;
114
115
#endif
/* _ARC_CORE_MPU_H_ */
mpu_config
struct arc_mpu_config mpu_config
uint32_t
__UINT32_TYPE__ uint32_t
Definition
stdint.h:90
arc_mpu_config
Definition
arc_mpu.h:105
arc_mpu_config::num_regions
uint32_t num_regions
Definition
arc_mpu.h:107
arc_mpu_config::mpu_regions
struct arc_mpu_region * mpu_regions
Definition
arc_mpu.h:109
arc_mpu_region
Definition
arc_mpu.h:86
arc_mpu_region::size
uint32_t size
Definition
arc_mpu.h:91
arc_mpu_region::base
uint32_t base
Definition
arc_mpu.h:90
arc_mpu_region::name
const char * name
Definition
arc_mpu.h:88
arc_mpu_region::attr
uint32_t attr
Definition
arc_mpu.h:93
zephyr
arch
arc
v2
mpu
arc_mpu.h
Generated on Sat Nov 9 2024 00:03:12 for Zephyr API Documentation by
1.12.0