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_ */ 116
