summaryrefslogtreecommitdiffhomepage
path: root/CMSIS/mpu_armv7.h
diff options
context:
space:
mode:
Diffstat (limited to 'CMSIS/mpu_armv7.h')
-rw-r--r--CMSIS/mpu_armv7.h197
1 files changed, 197 insertions, 0 deletions
diff --git a/CMSIS/mpu_armv7.h b/CMSIS/mpu_armv7.h
new file mode 100644
index 0000000..aa180c9
--- /dev/null
+++ b/CMSIS/mpu_armv7.h
@@ -0,0 +1,197 @@
+/******************************************************************************
+ * @file mpu_armv7.h
+ * @brief CMSIS MPU API for Armv7-M MPU
+ * @version V5.0.4
+ * @date 10. January 2018
+ ******************************************************************************/
+/*
+ * Copyright (c) 2017-2018 Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the License); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an AS IS BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#if defined ( __ICCARM__ )
+ #pragma system_include /* treat file as system include file for MISRA check */
+#elif defined (__clang__)
+ #pragma clang system_header /* treat file as system include file */
+#endif
+
+#ifndef ARM_MPU_ARMV7_H
+#define ARM_MPU_ARMV7_H
+
+#define ARM_MPU_REGION_SIZE_32B ((uint8_t)0x04U)
+#define ARM_MPU_REGION_SIZE_64B ((uint8_t)0x05U)
+#define ARM_MPU_REGION_SIZE_128B ((uint8_t)0x06U)
+#define ARM_MPU_REGION_SIZE_256B ((uint8_t)0x07U)
+#define ARM_MPU_REGION_SIZE_512B ((uint8_t)0x08U)
+#define ARM_MPU_REGION_SIZE_1KB ((uint8_t)0x09U)
+#define ARM_MPU_REGION_SIZE_2KB ((uint8_t)0x0AU)
+#define ARM_MPU_REGION_SIZE_4KB ((uint8_t)0x0BU)
+#define ARM_MPU_REGION_SIZE_8KB ((uint8_t)0x0CU)
+#define ARM_MPU_REGION_SIZE_16KB ((uint8_t)0x0DU)
+#define ARM_MPU_REGION_SIZE_32KB ((uint8_t)0x0EU)
+#define ARM_MPU_REGION_SIZE_64KB ((uint8_t)0x0FU)
+#define ARM_MPU_REGION_SIZE_128KB ((uint8_t)0x10U)
+#define ARM_MPU_REGION_SIZE_256KB ((uint8_t)0x11U)
+#define ARM_MPU_REGION_SIZE_512KB ((uint8_t)0x12U)
+#define ARM_MPU_REGION_SIZE_1MB ((uint8_t)0x13U)
+#define ARM_MPU_REGION_SIZE_2MB ((uint8_t)0x14U)
+#define ARM_MPU_REGION_SIZE_4MB ((uint8_t)0x15U)
+#define ARM_MPU_REGION_SIZE_8MB ((uint8_t)0x16U)
+#define ARM_MPU_REGION_SIZE_16MB ((uint8_t)0x17U)
+#define ARM_MPU_REGION_SIZE_32MB ((uint8_t)0x18U)
+#define ARM_MPU_REGION_SIZE_64MB ((uint8_t)0x19U)
+#define ARM_MPU_REGION_SIZE_128MB ((uint8_t)0x1AU)
+#define ARM_MPU_REGION_SIZE_256MB ((uint8_t)0x1BU)
+#define ARM_MPU_REGION_SIZE_512MB ((uint8_t)0x1CU)
+#define ARM_MPU_REGION_SIZE_1GB ((uint8_t)0x1DU)
+#define ARM_MPU_REGION_SIZE_2GB ((uint8_t)0x1EU)
+#define ARM_MPU_REGION_SIZE_4GB ((uint8_t)0x1FU)
+
+#define ARM_MPU_AP_NONE 0U
+#define ARM_MPU_AP_PRIV 1U
+#define ARM_MPU_AP_URO 2U
+#define ARM_MPU_AP_FULL 3U
+#define ARM_MPU_AP_PRO 5U
+#define ARM_MPU_AP_RO 6U
+
+/** MPU Region Base Address Register Value
+*
+* \param Region The region to be configured, number 0 to 15.
+* \param BaseAddress The base address for the region.
+*/
+#define ARM_MPU_RBAR(Region, BaseAddress) \
+ (((BaseAddress) & MPU_RBAR_ADDR_Msk) | \
+ ((Region) & MPU_RBAR_REGION_Msk) | \
+ (MPU_RBAR_VALID_Msk))
+
+/**
+* MPU Region Attribute and Size Register Value
+*
+* \param DisableExec Instruction access disable bit, 1= disable instruction fetches.
+* \param AccessPermission Data access permissions, allows you to configure read/write access for User and Privileged mode.
+* \param TypeExtField Type extension field, allows you to configure memory access type, for example strongly ordered, peripheral.
+* \param IsShareable Region is shareable between multiple bus masters.
+* \param IsCacheable Region is cacheable, i.e. its value may be kept in cache.
+* \param IsBufferable Region is bufferable, i.e. using write-back caching. Cacheable but non-bufferable regions use write-through policy.
+* \param SubRegionDisable Sub-region disable field.
+* \param Size Region size of the region to be configured, for example 4K, 8K.
+*/
+#define ARM_MPU_RASR(DisableExec, AccessPermission, TypeExtField, IsShareable, IsCacheable, IsBufferable, SubRegionDisable, Size) \
+ ((((DisableExec ) << MPU_RASR_XN_Pos) & MPU_RASR_XN_Msk) | \
+ (((AccessPermission) << MPU_RASR_AP_Pos) & MPU_RASR_AP_Msk) | \
+ (((TypeExtField ) << MPU_RASR_TEX_Pos) & MPU_RASR_TEX_Msk) | \
+ (((IsShareable ) << MPU_RASR_S_Pos) & MPU_RASR_S_Msk) | \
+ (((IsCacheable ) << MPU_RASR_C_Pos) & MPU_RASR_C_Msk) | \
+ (((IsBufferable ) << MPU_RASR_B_Pos) & MPU_RASR_B_Msk) | \
+ (((SubRegionDisable) << MPU_RASR_SRD_Pos) & MPU_RASR_SRD_Msk) | \
+ (((Size ) << MPU_RASR_SIZE_Pos) & MPU_RASR_SIZE_Msk) | \
+ (MPU_RASR_ENABLE_Msk))
+
+
+/**
+* Struct for a single MPU Region
+*/
+typedef struct {
+ uint32_t RBAR; //!< The region base address register value (RBAR)
+ uint32_t RASR; //!< The region attribute and size register value (RASR) \ref MPU_RASR
+} ARM_MPU_Region_t;
+
+/** Enable the MPU.
+* \param MPU_Control Default access permissions for unconfigured regions.
+*/
+__STATIC_INLINE void ARM_MPU_Enable(uint32_t MPU_Control)
+{
+ __DSB();
+ __ISB();
+ MPU->CTRL = MPU_Control | MPU_CTRL_ENABLE_Msk;
+#ifdef SCB_SHCSR_MEMFAULTENA_Msk
+ SCB->SHCSR |= SCB_SHCSR_MEMFAULTENA_Msk;
+#endif
+}
+
+/** Disable the MPU.
+*/
+__STATIC_INLINE void ARM_MPU_Disable(void)
+{
+ __DSB();
+ __ISB();
+#ifdef SCB_SHCSR_MEMFAULTENA_Msk
+ SCB->SHCSR &= ~SCB_SHCSR_MEMFAULTENA_Msk;
+#endif
+ MPU->CTRL &= ~MPU_CTRL_ENABLE_Msk;
+}
+
+/** Clear and disable the given MPU region.
+* \param rnr Region number to be cleared.
+*/
+__STATIC_INLINE void ARM_MPU_ClrRegion(uint32_t rnr)
+{
+ MPU->RNR = rnr;
+ MPU->RASR = 0U;
+}
+
+/** Configure an MPU region.
+* \param rbar Value for RBAR register.
+* \param rsar Value for RSAR register.
+*/
+__STATIC_INLINE void ARM_MPU_SetRegion(uint32_t rbar, uint32_t rasr)
+{
+ MPU->RBAR = rbar;
+ MPU->RASR = rasr;
+}
+
+/** Configure the given MPU region.
+* \param rnr Region number to be configured.
+* \param rbar Value for RBAR register.
+* \param rsar Value for RSAR register.
+*/
+__STATIC_INLINE void ARM_MPU_SetRegionEx(uint32_t rnr, uint32_t rbar, uint32_t rasr)
+{
+ MPU->RNR = rnr;
+ MPU->RBAR = rbar;
+ MPU->RASR = rasr;
+}
+
+/** Memcopy with strictly ordered memory access, e.g. for register targets.
+* \param dst Destination data is copied to.
+* \param src Source data is copied from.
+* \param len Amount of data words to be copied.
+*/
+__STATIC_INLINE void orderedCpy(volatile uint32_t* dst, const uint32_t* __RESTRICT src, uint32_t len)
+{
+ uint32_t i;
+ for (i = 0U; i < len; ++i)
+ {
+ dst[i] = src[i];
+ }
+}
+
+/** Load the given number of MPU regions from a table.
+* \param table Pointer to the MPU configuration table.
+* \param cnt Amount of regions to be configured.
+*/
+__STATIC_INLINE void ARM_MPU_Load(ARM_MPU_Region_t const* table, uint32_t cnt)
+{
+ const uint32_t rowWordSize = sizeof(ARM_MPU_Region_t)/4U;
+ while (cnt > MPU_TYPE_RALIASES) {
+ orderedCpy(&(MPU->RBAR), &(table->RBAR), MPU_TYPE_RALIASES*rowWordSize);
+ table += MPU_TYPE_RALIASES;
+ cnt -= MPU_TYPE_RALIASES;
+ }
+ orderedCpy(&(MPU->RBAR), &(table->RBAR), cnt*rowWordSize);
+}
+
+#endif



X-ray Engineering Services