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_ */