163 lines
6.5 KiB
C
163 lines
6.5 KiB
C
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//*****************************************************************************
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//
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// mpu.h - Defines and Macros for the memory protection unit.
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//
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// Copyright (c) 2005-2017 Texas Instruments Incorporated. All rights reserved.
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// Software License Agreement
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions
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// are met:
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//
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// Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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//
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// Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the
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// distribution.
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//
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// Neither the name of Texas Instruments Incorporated nor the names of
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// its contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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//*****************************************************************************
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#ifndef __DRIVERLIB_MPU_H__
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#define __DRIVERLIB_MPU_H__
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#include <stdint.h>
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//*****************************************************************************
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//
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// If building with a C++ compiler, make all of the definitions in this header
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// have a C binding.
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//
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//*****************************************************************************
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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//*****************************************************************************
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//
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// Flags that can be passed to MPUEnable.
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//
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//*****************************************************************************
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#define MPU_CONFIG_PRIV_DEFAULT 4
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#define MPU_CONFIG_HARDFLT_NMI 2
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#define MPU_CONFIG_NONE 0
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//*****************************************************************************
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//
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// Flags for the region size to be passed to MPURegionSet.
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//
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//*****************************************************************************
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#define MPU_RGN_SIZE_32B (4 << 1)
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#define MPU_RGN_SIZE_64B (5 << 1)
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#define MPU_RGN_SIZE_128B (6 << 1)
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#define MPU_RGN_SIZE_256B (7 << 1)
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#define MPU_RGN_SIZE_512B (8 << 1)
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#define MPU_RGN_SIZE_1K (9 << 1)
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#define MPU_RGN_SIZE_2K (10 << 1)
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#define MPU_RGN_SIZE_4K (11 << 1)
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#define MPU_RGN_SIZE_8K (12 << 1)
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#define MPU_RGN_SIZE_16K (13 << 1)
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#define MPU_RGN_SIZE_32K (14 << 1)
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#define MPU_RGN_SIZE_64K (15 << 1)
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#define MPU_RGN_SIZE_128K (16 << 1)
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#define MPU_RGN_SIZE_256K (17 << 1)
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#define MPU_RGN_SIZE_512K (18 << 1)
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#define MPU_RGN_SIZE_1M (19 << 1)
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#define MPU_RGN_SIZE_2M (20 << 1)
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#define MPU_RGN_SIZE_4M (21 << 1)
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#define MPU_RGN_SIZE_8M (22 << 1)
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#define MPU_RGN_SIZE_16M (23 << 1)
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#define MPU_RGN_SIZE_32M (24 << 1)
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#define MPU_RGN_SIZE_64M (25 << 1)
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#define MPU_RGN_SIZE_128M (26 << 1)
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#define MPU_RGN_SIZE_256M (27 << 1)
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#define MPU_RGN_SIZE_512M (28 << 1)
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#define MPU_RGN_SIZE_1G (29 << 1)
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#define MPU_RGN_SIZE_2G (30 << 1)
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#define MPU_RGN_SIZE_4G (31 << 1)
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//*****************************************************************************
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//
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// Flags for the permissions to be passed to MPURegionSet.
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//
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//*****************************************************************************
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#define MPU_RGN_PERM_EXEC 0x00000000
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#define MPU_RGN_PERM_NOEXEC 0x10000000
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#define MPU_RGN_PERM_PRV_NO_USR_NO 0x00000000
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#define MPU_RGN_PERM_PRV_RW_USR_NO 0x01000000
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#define MPU_RGN_PERM_PRV_RW_USR_RO 0x02000000
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#define MPU_RGN_PERM_PRV_RW_USR_RW 0x03000000
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#define MPU_RGN_PERM_PRV_RO_USR_NO 0x05000000
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#define MPU_RGN_PERM_PRV_RO_USR_RO 0x06000000
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//*****************************************************************************
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//
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// Flags for the sub-region to be passed to MPURegionSet.
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//
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//*****************************************************************************
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#define MPU_SUB_RGN_DISABLE_0 0x00000100
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#define MPU_SUB_RGN_DISABLE_1 0x00000200
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#define MPU_SUB_RGN_DISABLE_2 0x00000400
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#define MPU_SUB_RGN_DISABLE_3 0x00000800
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#define MPU_SUB_RGN_DISABLE_4 0x00001000
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#define MPU_SUB_RGN_DISABLE_5 0x00002000
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#define MPU_SUB_RGN_DISABLE_6 0x00004000
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#define MPU_SUB_RGN_DISABLE_7 0x00008000
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//*****************************************************************************
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//
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// Flags to enable or disable a region, to be passed to MPURegionSet.
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//
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//*****************************************************************************
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#define MPU_RGN_ENABLE 1
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#define MPU_RGN_DISABLE 0
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//*****************************************************************************
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//
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// API Function prototypes
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//
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//*****************************************************************************
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extern void MPUEnable(uint32_t ui32MPUConfig);
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extern void MPUDisable(void);
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extern uint32_t MPURegionCountGet(void);
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extern void MPURegionEnable(uint32_t ui32Region);
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extern void MPURegionDisable(uint32_t ui32Region);
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extern void MPURegionSet(uint32_t ui32Region, uint32_t ui32Addr,
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uint32_t ui32Flags);
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extern void MPURegionGet(uint32_t ui32Region, uint32_t *pui32Addr,
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uint32_t *pui32Flags);
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extern void MPUIntRegister(void (*pfnHandler)(void));
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extern void MPUIntUnregister(void);
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//*****************************************************************************
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//
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// Mark the end of the C bindings section for C++ compilers.
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//
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//*****************************************************************************
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#ifdef __cplusplus
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}
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#endif
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#endif // __DRIVERLIB_MPU_H__
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