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TARGET_LPC1768/TOOLCHAIN_ARM_STD/mpu_armv7.h@171:3a7713b1edbc, 2018-11-08 (annotated)

Committer:
AnnaBridge
Date:
Thu Nov 08 11:45:42 2018 +0000
Revision:
171:3a7713b1edbc
mbed library. Release version 164

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AnnaBridge 171:3a7713b1edbc 1 /******************************************************************************
AnnaBridge 171:3a7713b1edbc 2 * @file mpu_armv7.h
AnnaBridge 171:3a7713b1edbc 3 * @brief CMSIS MPU API for Armv7-M MPU
AnnaBridge 171:3a7713b1edbc 4 * @version V5.0.5
AnnaBridge 171:3a7713b1edbc 5 * @date 06. September 2018
AnnaBridge 171:3a7713b1edbc 6 ******************************************************************************/
AnnaBridge 171:3a7713b1edbc 7 /*
AnnaBridge 171:3a7713b1edbc 8 * Copyright (c) 2017-2018 Arm Limited. All rights reserved.
AnnaBridge 171:3a7713b1edbc 9 *
AnnaBridge 171:3a7713b1edbc 10 * SPDX-License-Identifier: Apache-2.0
AnnaBridge 171:3a7713b1edbc 11 *
AnnaBridge 171:3a7713b1edbc 12 * Licensed under the Apache License, Version 2.0 (the License); you may
AnnaBridge 171:3a7713b1edbc 13 * not use this file except in compliance with the License.
AnnaBridge 171:3a7713b1edbc 14 * You may obtain a copy of the License at
AnnaBridge 171:3a7713b1edbc 15 *
AnnaBridge 171:3a7713b1edbc 16 * www.apache.org/licenses/LICENSE-2.0
AnnaBridge 171:3a7713b1edbc 17 *
AnnaBridge 171:3a7713b1edbc 18 * Unless required by applicable law or agreed to in writing, software
AnnaBridge 171:3a7713b1edbc 19 * distributed under the License is distributed on an AS IS BASIS, WITHOUT
AnnaBridge 171:3a7713b1edbc 20 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
AnnaBridge 171:3a7713b1edbc 21 * See the License for the specific language governing permissions and
AnnaBridge 171:3a7713b1edbc 22 * limitations under the License.
AnnaBridge 171:3a7713b1edbc 23 */
AnnaBridge 171:3a7713b1edbc 24
AnnaBridge 171:3a7713b1edbc 25 #if defined ( __ICCARM__ )
AnnaBridge 171:3a7713b1edbc 26 #pragma system_include /* treat file as system include file for MISRA check */
AnnaBridge 171:3a7713b1edbc 27 #elif defined (__clang__)
AnnaBridge 171:3a7713b1edbc 28 #pragma clang system_header /* treat file as system include file */
AnnaBridge 171:3a7713b1edbc 29 #endif
AnnaBridge 171:3a7713b1edbc 30
AnnaBridge 171:3a7713b1edbc 31 #ifndef ARM_MPU_ARMV7_H
AnnaBridge 171:3a7713b1edbc 32 #define ARM_MPU_ARMV7_H
AnnaBridge 171:3a7713b1edbc 33
AnnaBridge 171:3a7713b1edbc 34 #define ARM_MPU_REGION_SIZE_32B ((uint8_t)0x04U) ///!< MPU Region Size 32 Bytes
AnnaBridge 171:3a7713b1edbc 35 #define ARM_MPU_REGION_SIZE_64B ((uint8_t)0x05U) ///!< MPU Region Size 64 Bytes
AnnaBridge 171:3a7713b1edbc 36 #define ARM_MPU_REGION_SIZE_128B ((uint8_t)0x06U) ///!< MPU Region Size 128 Bytes
AnnaBridge 171:3a7713b1edbc 37 #define ARM_MPU_REGION_SIZE_256B ((uint8_t)0x07U) ///!< MPU Region Size 256 Bytes
AnnaBridge 171:3a7713b1edbc 38 #define ARM_MPU_REGION_SIZE_512B ((uint8_t)0x08U) ///!< MPU Region Size 512 Bytes
AnnaBridge 171:3a7713b1edbc 39 #define ARM_MPU_REGION_SIZE_1KB ((uint8_t)0x09U) ///!< MPU Region Size 1 KByte
AnnaBridge 171:3a7713b1edbc 40 #define ARM_MPU_REGION_SIZE_2KB ((uint8_t)0x0AU) ///!< MPU Region Size 2 KBytes
AnnaBridge 171:3a7713b1edbc 41 #define ARM_MPU_REGION_SIZE_4KB ((uint8_t)0x0BU) ///!< MPU Region Size 4 KBytes
AnnaBridge 171:3a7713b1edbc 42 #define ARM_MPU_REGION_SIZE_8KB ((uint8_t)0x0CU) ///!< MPU Region Size 8 KBytes
AnnaBridge 171:3a7713b1edbc 43 #define ARM_MPU_REGION_SIZE_16KB ((uint8_t)0x0DU) ///!< MPU Region Size 16 KBytes
AnnaBridge 171:3a7713b1edbc 44 #define ARM_MPU_REGION_SIZE_32KB ((uint8_t)0x0EU) ///!< MPU Region Size 32 KBytes
AnnaBridge 171:3a7713b1edbc 45 #define ARM_MPU_REGION_SIZE_64KB ((uint8_t)0x0FU) ///!< MPU Region Size 64 KBytes
AnnaBridge 171:3a7713b1edbc 46 #define ARM_MPU_REGION_SIZE_128KB ((uint8_t)0x10U) ///!< MPU Region Size 128 KBytes
AnnaBridge 171:3a7713b1edbc 47 #define ARM_MPU_REGION_SIZE_256KB ((uint8_t)0x11U) ///!< MPU Region Size 256 KBytes
AnnaBridge 171:3a7713b1edbc 48 #define ARM_MPU_REGION_SIZE_512KB ((uint8_t)0x12U) ///!< MPU Region Size 512 KBytes
AnnaBridge 171:3a7713b1edbc 49 #define ARM_MPU_REGION_SIZE_1MB ((uint8_t)0x13U) ///!< MPU Region Size 1 MByte
AnnaBridge 171:3a7713b1edbc 50 #define ARM_MPU_REGION_SIZE_2MB ((uint8_t)0x14U) ///!< MPU Region Size 2 MBytes
AnnaBridge 171:3a7713b1edbc 51 #define ARM_MPU_REGION_SIZE_4MB ((uint8_t)0x15U) ///!< MPU Region Size 4 MBytes
AnnaBridge 171:3a7713b1edbc 52 #define ARM_MPU_REGION_SIZE_8MB ((uint8_t)0x16U) ///!< MPU Region Size 8 MBytes
AnnaBridge 171:3a7713b1edbc 53 #define ARM_MPU_REGION_SIZE_16MB ((uint8_t)0x17U) ///!< MPU Region Size 16 MBytes
AnnaBridge 171:3a7713b1edbc 54 #define ARM_MPU_REGION_SIZE_32MB ((uint8_t)0x18U) ///!< MPU Region Size 32 MBytes
AnnaBridge 171:3a7713b1edbc 55 #define ARM_MPU_REGION_SIZE_64MB ((uint8_t)0x19U) ///!< MPU Region Size 64 MBytes
AnnaBridge 171:3a7713b1edbc 56 #define ARM_MPU_REGION_SIZE_128MB ((uint8_t)0x1AU) ///!< MPU Region Size 128 MBytes
AnnaBridge 171:3a7713b1edbc 57 #define ARM_MPU_REGION_SIZE_256MB ((uint8_t)0x1BU) ///!< MPU Region Size 256 MBytes
AnnaBridge 171:3a7713b1edbc 58 #define ARM_MPU_REGION_SIZE_512MB ((uint8_t)0x1CU) ///!< MPU Region Size 512 MBytes
AnnaBridge 171:3a7713b1edbc 59 #define ARM_MPU_REGION_SIZE_1GB ((uint8_t)0x1DU) ///!< MPU Region Size 1 GByte
AnnaBridge 171:3a7713b1edbc 60 #define ARM_MPU_REGION_SIZE_2GB ((uint8_t)0x1EU) ///!< MPU Region Size 2 GBytes
AnnaBridge 171:3a7713b1edbc 61 #define ARM_MPU_REGION_SIZE_4GB ((uint8_t)0x1FU) ///!< MPU Region Size 4 GBytes
AnnaBridge 171:3a7713b1edbc 62
AnnaBridge 171:3a7713b1edbc 63 #define ARM_MPU_AP_NONE 0U ///!< MPU Access Permission no access
AnnaBridge 171:3a7713b1edbc 64 #define ARM_MPU_AP_PRIV 1U ///!< MPU Access Permission privileged access only
AnnaBridge 171:3a7713b1edbc 65 #define ARM_MPU_AP_URO 2U ///!< MPU Access Permission unprivileged access read-only
AnnaBridge 171:3a7713b1edbc 66 #define ARM_MPU_AP_FULL 3U ///!< MPU Access Permission full access
AnnaBridge 171:3a7713b1edbc 67 #define ARM_MPU_AP_PRO 5U ///!< MPU Access Permission privileged access read-only
AnnaBridge 171:3a7713b1edbc 68 #define ARM_MPU_AP_RO 6U ///!< MPU Access Permission read-only access
AnnaBridge 171:3a7713b1edbc 69
AnnaBridge 171:3a7713b1edbc 70 /** MPU Region Base Address Register Value
AnnaBridge 171:3a7713b1edbc 71 *
AnnaBridge 171:3a7713b1edbc 72 * \param Region The region to be configured, number 0 to 15.
AnnaBridge 171:3a7713b1edbc 73 * \param BaseAddress The base address for the region.
AnnaBridge 171:3a7713b1edbc 74 */
AnnaBridge 171:3a7713b1edbc 75 #define ARM_MPU_RBAR(Region, BaseAddress) \
AnnaBridge 171:3a7713b1edbc 76 (((BaseAddress) & MPU_RBAR_ADDR_Msk) | \
AnnaBridge 171:3a7713b1edbc 77 ((Region) & MPU_RBAR_REGION_Msk) | \
AnnaBridge 171:3a7713b1edbc 78 (MPU_RBAR_VALID_Msk))
AnnaBridge 171:3a7713b1edbc 79
AnnaBridge 171:3a7713b1edbc 80 /**
AnnaBridge 171:3a7713b1edbc 81 * MPU Memory Access Attributes
AnnaBridge 171:3a7713b1edbc 82 *
AnnaBridge 171:3a7713b1edbc 83 * \param TypeExtField Type extension field, allows you to configure memory access type, for example strongly ordered, peripheral.
AnnaBridge 171:3a7713b1edbc 84 * \param IsShareable Region is shareable between multiple bus masters.
AnnaBridge 171:3a7713b1edbc 85 * \param IsCacheable Region is cacheable, i.e. its value may be kept in cache.
AnnaBridge 171:3a7713b1edbc 86 * \param IsBufferable Region is bufferable, i.e. using write-back caching. Cacheable but non-bufferable regions use write-through policy.
AnnaBridge 171:3a7713b1edbc 87 */
AnnaBridge 171:3a7713b1edbc 88 #define ARM_MPU_ACCESS_(TypeExtField, IsShareable, IsCacheable, IsBufferable) \
AnnaBridge 171:3a7713b1edbc 89 ((((TypeExtField) << MPU_RASR_TEX_Pos) & MPU_RASR_TEX_Msk) | \
AnnaBridge 171:3a7713b1edbc 90 (((IsShareable) << MPU_RASR_S_Pos) & MPU_RASR_S_Msk) | \
AnnaBridge 171:3a7713b1edbc 91 (((IsCacheable) << MPU_RASR_C_Pos) & MPU_RASR_C_Msk) | \
AnnaBridge 171:3a7713b1edbc 92 (((IsBufferable) << MPU_RASR_B_Pos) & MPU_RASR_B_Msk))
AnnaBridge 171:3a7713b1edbc 93
AnnaBridge 171:3a7713b1edbc 94 /**
AnnaBridge 171:3a7713b1edbc 95 * MPU Region Attribute and Size Register Value
AnnaBridge 171:3a7713b1edbc 96 *
AnnaBridge 171:3a7713b1edbc 97 * \param DisableExec Instruction access disable bit, 1= disable instruction fetches.
AnnaBridge 171:3a7713b1edbc 98 * \param AccessPermission Data access permissions, allows you to configure read/write access for User and Privileged mode.
AnnaBridge 171:3a7713b1edbc 99 * \param AccessAttributes Memory access attribution, see \ref ARM_MPU_ACCESS_.
AnnaBridge 171:3a7713b1edbc 100 * \param SubRegionDisable Sub-region disable field.
AnnaBridge 171:3a7713b1edbc 101 * \param Size Region size of the region to be configured, for example 4K, 8K.
AnnaBridge 171:3a7713b1edbc 102 */
AnnaBridge 171:3a7713b1edbc 103 #define ARM_MPU_RASR_EX(DisableExec, AccessPermission, AccessAttributes, SubRegionDisable, Size) \
AnnaBridge 171:3a7713b1edbc 104 ((((DisableExec) << MPU_RASR_XN_Pos) & MPU_RASR_XN_Msk) | \
AnnaBridge 171:3a7713b1edbc 105 (((AccessPermission) << MPU_RASR_AP_Pos) & MPU_RASR_AP_Msk) | \
AnnaBridge 171:3a7713b1edbc 106 (((AccessAttributes) & (MPU_RASR_TEX_Msk | MPU_RASR_S_Msk | MPU_RASR_C_Msk | MPU_RASR_B_Msk))) | \
AnnaBridge 171:3a7713b1edbc 107 (((SubRegionDisable) << MPU_RASR_SRD_Pos) & MPU_RASR_SRD_Msk) | \
AnnaBridge 171:3a7713b1edbc 108 (((Size) << MPU_RASR_SIZE_Pos) & MPU_RASR_SIZE_Msk) | \
AnnaBridge 171:3a7713b1edbc 109 (((MPU_RASR_ENABLE_Msk))))
AnnaBridge 171:3a7713b1edbc 110
AnnaBridge 171:3a7713b1edbc 111 /**
AnnaBridge 171:3a7713b1edbc 112 * MPU Region Attribute and Size Register Value
AnnaBridge 171:3a7713b1edbc 113 *
AnnaBridge 171:3a7713b1edbc 114 * \param DisableExec Instruction access disable bit, 1= disable instruction fetches.
AnnaBridge 171:3a7713b1edbc 115 * \param AccessPermission Data access permissions, allows you to configure read/write access for User and Privileged mode.
AnnaBridge 171:3a7713b1edbc 116 * \param TypeExtField Type extension field, allows you to configure memory access type, for example strongly ordered, peripheral.
AnnaBridge 171:3a7713b1edbc 117 * \param IsShareable Region is shareable between multiple bus masters.
AnnaBridge 171:3a7713b1edbc 118 * \param IsCacheable Region is cacheable, i.e. its value may be kept in cache.
AnnaBridge 171:3a7713b1edbc 119 * \param IsBufferable Region is bufferable, i.e. using write-back caching. Cacheable but non-bufferable regions use write-through policy.
AnnaBridge 171:3a7713b1edbc 120 * \param SubRegionDisable Sub-region disable field.
AnnaBridge 171:3a7713b1edbc 121 * \param Size Region size of the region to be configured, for example 4K, 8K.
AnnaBridge 171:3a7713b1edbc 122 */
AnnaBridge 171:3a7713b1edbc 123 #define ARM_MPU_RASR(DisableExec, AccessPermission, TypeExtField, IsShareable, IsCacheable, IsBufferable, SubRegionDisable, Size) \
AnnaBridge 171:3a7713b1edbc 124 ARM_MPU_RASR_EX(DisableExec, AccessPermission, ARM_MPU_ACCESS_(TypeExtField, IsShareable, IsCacheable, IsBufferable), SubRegionDisable, Size)
AnnaBridge 171:3a7713b1edbc 125
AnnaBridge 171:3a7713b1edbc 126 /**
AnnaBridge 171:3a7713b1edbc 127 * MPU Memory Access Attribute for strongly ordered memory.
AnnaBridge 171:3a7713b1edbc 128 * - TEX: 000b
AnnaBridge 171:3a7713b1edbc 129 * - Shareable
AnnaBridge 171:3a7713b1edbc 130 * - Non-cacheable
AnnaBridge 171:3a7713b1edbc 131 * - Non-bufferable
AnnaBridge 171:3a7713b1edbc 132 */
AnnaBridge 171:3a7713b1edbc 133 #define ARM_MPU_ACCESS_ORDERED ARM_MPU_ACCESS_(0U, 1U, 0U, 0U)
AnnaBridge 171:3a7713b1edbc 134
AnnaBridge 171:3a7713b1edbc 135 /**
AnnaBridge 171:3a7713b1edbc 136 * MPU Memory Access Attribute for device memory.
AnnaBridge 171:3a7713b1edbc 137 * - TEX: 000b (if non-shareable) or 010b (if shareable)
AnnaBridge 171:3a7713b1edbc 138 * - Shareable or non-shareable
AnnaBridge 171:3a7713b1edbc 139 * - Non-cacheable
AnnaBridge 171:3a7713b1edbc 140 * - Bufferable (if shareable) or non-bufferable (if non-shareable)
AnnaBridge 171:3a7713b1edbc 141 *
AnnaBridge 171:3a7713b1edbc 142 * \param IsShareable Configures the device memory as shareable or non-shareable.
AnnaBridge 171:3a7713b1edbc 143 */
AnnaBridge 171:3a7713b1edbc 144 #define ARM_MPU_ACCESS_DEVICE(IsShareable) ((IsShareable) ? ARM_MPU_ACCESS_(0U, 1U, 0U, 1U) : ARM_MPU_ACCESS_(2U, 0U, 0U, 0U))
AnnaBridge 171:3a7713b1edbc 145
AnnaBridge 171:3a7713b1edbc 146 /**
AnnaBridge 171:3a7713b1edbc 147 * MPU Memory Access Attribute for normal memory.
AnnaBridge 171:3a7713b1edbc 148 * - TEX: 1BBb (reflecting outer cacheability rules)
AnnaBridge 171:3a7713b1edbc 149 * - Shareable or non-shareable
AnnaBridge 171:3a7713b1edbc 150 * - Cacheable or non-cacheable (reflecting inner cacheability rules)
AnnaBridge 171:3a7713b1edbc 151 * - Bufferable or non-bufferable (reflecting inner cacheability rules)
AnnaBridge 171:3a7713b1edbc 152 *
AnnaBridge 171:3a7713b1edbc 153 * \param OuterCp Configures the outer cache policy.
AnnaBridge 171:3a7713b1edbc 154 * \param InnerCp Configures the inner cache policy.
AnnaBridge 171:3a7713b1edbc 155 * \param IsShareable Configures the memory as shareable or non-shareable.
AnnaBridge 171:3a7713b1edbc 156 */
AnnaBridge 171:3a7713b1edbc 157 #define ARM_MPU_ACCESS_NORMAL(OuterCp, InnerCp, IsShareable) ARM_MPU_ACCESS_((4U | (OuterCp)), IsShareable, ((InnerCp) & 2U), ((InnerCp) & 1U))
AnnaBridge 171:3a7713b1edbc 158
AnnaBridge 171:3a7713b1edbc 159 /**
AnnaBridge 171:3a7713b1edbc 160 * MPU Memory Access Attribute non-cacheable policy.
AnnaBridge 171:3a7713b1edbc 161 */
AnnaBridge 171:3a7713b1edbc 162 #define ARM_MPU_CACHEP_NOCACHE 0U
AnnaBridge 171:3a7713b1edbc 163
AnnaBridge 171:3a7713b1edbc 164 /**
AnnaBridge 171:3a7713b1edbc 165 * MPU Memory Access Attribute write-back, write and read allocate policy.
AnnaBridge 171:3a7713b1edbc 166 */
AnnaBridge 171:3a7713b1edbc 167 #define ARM_MPU_CACHEP_WB_WRA 1U
AnnaBridge 171:3a7713b1edbc 168
AnnaBridge 171:3a7713b1edbc 169 /**
AnnaBridge 171:3a7713b1edbc 170 * MPU Memory Access Attribute write-through, no write allocate policy.
AnnaBridge 171:3a7713b1edbc 171 */
AnnaBridge 171:3a7713b1edbc 172 #define ARM_MPU_CACHEP_WT_NWA 2U
AnnaBridge 171:3a7713b1edbc 173
AnnaBridge 171:3a7713b1edbc 174 /**
AnnaBridge 171:3a7713b1edbc 175 * MPU Memory Access Attribute write-back, no write allocate policy.
AnnaBridge 171:3a7713b1edbc 176 */
AnnaBridge 171:3a7713b1edbc 177 #define ARM_MPU_CACHEP_WB_NWA 3U
AnnaBridge 171:3a7713b1edbc 178
AnnaBridge 171:3a7713b1edbc 179
AnnaBridge 171:3a7713b1edbc 180 /**
AnnaBridge 171:3a7713b1edbc 181 * Struct for a single MPU Region
AnnaBridge 171:3a7713b1edbc 182 */
AnnaBridge 171:3a7713b1edbc 183 typedef struct {
AnnaBridge 171:3a7713b1edbc 184 uint32_t RBAR; //!< The region base address register value (RBAR)
AnnaBridge 171:3a7713b1edbc 185 uint32_t RASR; //!< The region attribute and size register value (RASR) \ref MPU_RASR
AnnaBridge 171:3a7713b1edbc 186 } ARM_MPU_Region_t;
AnnaBridge 171:3a7713b1edbc 187
AnnaBridge 171:3a7713b1edbc 188 /** Enable the MPU.
AnnaBridge 171:3a7713b1edbc 189 * \param MPU_Control Default access permissions for unconfigured regions.
AnnaBridge 171:3a7713b1edbc 190 */
AnnaBridge 171:3a7713b1edbc 191 __STATIC_INLINE void ARM_MPU_Enable(uint32_t MPU_Control)
AnnaBridge 171:3a7713b1edbc 192 {
AnnaBridge 171:3a7713b1edbc 193 __DSB();
AnnaBridge 171:3a7713b1edbc 194 __ISB();
AnnaBridge 171:3a7713b1edbc 195 MPU->CTRL = MPU_Control | MPU_CTRL_ENABLE_Msk;
AnnaBridge 171:3a7713b1edbc 196 #ifdef SCB_SHCSR_MEMFAULTENA_Msk
AnnaBridge 171:3a7713b1edbc 197 SCB->SHCSR |= SCB_SHCSR_MEMFAULTENA_Msk;
AnnaBridge 171:3a7713b1edbc 198 #endif
AnnaBridge 171:3a7713b1edbc 199 }
AnnaBridge 171:3a7713b1edbc 200
AnnaBridge 171:3a7713b1edbc 201 /** Disable the MPU.
AnnaBridge 171:3a7713b1edbc 202 */
AnnaBridge 171:3a7713b1edbc 203 __STATIC_INLINE void ARM_MPU_Disable(void)
AnnaBridge 171:3a7713b1edbc 204 {
AnnaBridge 171:3a7713b1edbc 205 __DSB();
AnnaBridge 171:3a7713b1edbc 206 __ISB();
AnnaBridge 171:3a7713b1edbc 207 #ifdef SCB_SHCSR_MEMFAULTENA_Msk
AnnaBridge 171:3a7713b1edbc 208 SCB->SHCSR &= ~SCB_SHCSR_MEMFAULTENA_Msk;
AnnaBridge 171:3a7713b1edbc 209 #endif
AnnaBridge 171:3a7713b1edbc 210 MPU->CTRL &= ~MPU_CTRL_ENABLE_Msk;
AnnaBridge 171:3a7713b1edbc 211 }
AnnaBridge 171:3a7713b1edbc 212
AnnaBridge 171:3a7713b1edbc 213 /** Clear and disable the given MPU region.
AnnaBridge 171:3a7713b1edbc 214 * \param rnr Region number to be cleared.
AnnaBridge 171:3a7713b1edbc 215 */
AnnaBridge 171:3a7713b1edbc 216 __STATIC_INLINE void ARM_MPU_ClrRegion(uint32_t rnr)
AnnaBridge 171:3a7713b1edbc 217 {
AnnaBridge 171:3a7713b1edbc 218 MPU->RNR = rnr;
AnnaBridge 171:3a7713b1edbc 219 MPU->RASR = 0U;
AnnaBridge 171:3a7713b1edbc 220 }
AnnaBridge 171:3a7713b1edbc 221
AnnaBridge 171:3a7713b1edbc 222 /** Configure an MPU region.
AnnaBridge 171:3a7713b1edbc 223 * \param rbar Value for RBAR register.
AnnaBridge 171:3a7713b1edbc 224 * \param rsar Value for RSAR register.
AnnaBridge 171:3a7713b1edbc 225 */
AnnaBridge 171:3a7713b1edbc 226 __STATIC_INLINE void ARM_MPU_SetRegion(uint32_t rbar, uint32_t rasr)
AnnaBridge 171:3a7713b1edbc 227 {
AnnaBridge 171:3a7713b1edbc 228 MPU->RBAR = rbar;
AnnaBridge 171:3a7713b1edbc 229 MPU->RASR = rasr;
AnnaBridge 171:3a7713b1edbc 230 }
AnnaBridge 171:3a7713b1edbc 231
AnnaBridge 171:3a7713b1edbc 232 /** Configure the given MPU region.
AnnaBridge 171:3a7713b1edbc 233 * \param rnr Region number to be configured.
AnnaBridge 171:3a7713b1edbc 234 * \param rbar Value for RBAR register.
AnnaBridge 171:3a7713b1edbc 235 * \param rsar Value for RSAR register.
AnnaBridge 171:3a7713b1edbc 236 */
AnnaBridge 171:3a7713b1edbc 237 __STATIC_INLINE void ARM_MPU_SetRegionEx(uint32_t rnr, uint32_t rbar, uint32_t rasr)
AnnaBridge 171:3a7713b1edbc 238 {
AnnaBridge 171:3a7713b1edbc 239 MPU->RNR = rnr;
AnnaBridge 171:3a7713b1edbc 240 MPU->RBAR = rbar;
AnnaBridge 171:3a7713b1edbc 241 MPU->RASR = rasr;
AnnaBridge 171:3a7713b1edbc 242 }
AnnaBridge 171:3a7713b1edbc 243
AnnaBridge 171:3a7713b1edbc 244 /** Memcopy with strictly ordered memory access, e.g. for register targets.
AnnaBridge 171:3a7713b1edbc 245 * \param dst Destination data is copied to.
AnnaBridge 171:3a7713b1edbc 246 * \param src Source data is copied from.
AnnaBridge 171:3a7713b1edbc 247 * \param len Amount of data words to be copied.
AnnaBridge 171:3a7713b1edbc 248 */
AnnaBridge 171:3a7713b1edbc 249 __STATIC_INLINE void orderedCpy(volatile uint32_t* dst, const uint32_t* __RESTRICT src, uint32_t len)
AnnaBridge 171:3a7713b1edbc 250 {
AnnaBridge 171:3a7713b1edbc 251 uint32_t i;
AnnaBridge 171:3a7713b1edbc 252 for (i = 0U; i < len; ++i)
AnnaBridge 171:3a7713b1edbc 253 {
AnnaBridge 171:3a7713b1edbc 254 dst[i] = src[i];
AnnaBridge 171:3a7713b1edbc 255 }
AnnaBridge 171:3a7713b1edbc 256 }
AnnaBridge 171:3a7713b1edbc 257
AnnaBridge 171:3a7713b1edbc 258 /** Load the given number of MPU regions from a table.
AnnaBridge 171:3a7713b1edbc 259 * \param table Pointer to the MPU configuration table.
AnnaBridge 171:3a7713b1edbc 260 * \param cnt Amount of regions to be configured.
AnnaBridge 171:3a7713b1edbc 261 */
AnnaBridge 171:3a7713b1edbc 262 __STATIC_INLINE void ARM_MPU_Load(ARM_MPU_Region_t const* table, uint32_t cnt)
AnnaBridge 171:3a7713b1edbc 263 {
AnnaBridge 171:3a7713b1edbc 264 const uint32_t rowWordSize = sizeof(ARM_MPU_Region_t)/4U;
AnnaBridge 171:3a7713b1edbc 265 while (cnt > MPU_TYPE_RALIASES) {
AnnaBridge 171:3a7713b1edbc 266 orderedCpy(&(MPU->RBAR), &(table->RBAR), MPU_TYPE_RALIASES*rowWordSize);
AnnaBridge 171:3a7713b1edbc 267 table += MPU_TYPE_RALIASES;
AnnaBridge 171:3a7713b1edbc 268 cnt -= MPU_TYPE_RALIASES;
AnnaBridge 171:3a7713b1edbc 269 }
AnnaBridge 171:3a7713b1edbc 270 orderedCpy(&(MPU->RBAR), &(table->RBAR), cnt*rowWordSize);
AnnaBridge 171:3a7713b1edbc 271 }
AnnaBridge 171:3a7713b1edbc 272
AnnaBridge 171:3a7713b1edbc 273 #endif