memory-attr-arm.h

Go to the documentation of this file.

/*
 * Copyright (c) 2023 Carlo Caione <[email protected]>
 *
 * SPDX-License-Identifier: Apache-2.0
 */
#ifndef ZEPHYR_INCLUDE_DT_BINDINGS_MEM_ATTR_ARM_H_
#define ZEPHYR_INCLUDE_DT_BINDINGS_MEM_ATTR_ARM_H_
 
#include <zephyr/sys/util_macro.h>
#include <zephyr/dt-bindings/memory-attr/memory-attr.h>
 
/*
 * Architecture specific ARM MPU related attributes.
 *
 * This list is to seamlessy support the MPU regions configuration using DT and
 * the `zephyr,memory-attr` property.
 *
 * This is legacy and it should NOT be extended further. If new MPU region
 * types must be added, these must rely on the generic memory attributes.
 */
#define DT_MEM_ARM_MASK                 DT_MEM_ARCH_ATTR_MASK
#define DT_MEM_ARM_GET(x)               ((x) & DT_MEM_ARM_MASK)
#define DT_MEM_ARM(x)                   ((x) << DT_MEM_ARCH_ATTR_SHIFT)
 
#define  ATTR_MPU_RAM                   BIT(0)
#define  ATTR_MPU_RAM_NOCACHE           BIT(1)
#define  ATTR_MPU_FLASH                 BIT(2)
#define  ATTR_MPU_PPB                   BIT(3)
#define  ATTR_MPU_IO                    BIT(4)
#define  ATTR_MPU_EXTMEM                BIT(5)
 
#define DT_MEM_ARM_MPU_RAM              DT_MEM_ARM(ATTR_MPU_RAM)
#define DT_MEM_ARM_MPU_RAM_NOCACHE      DT_MEM_ARM(ATTR_MPU_RAM_NOCACHE)
#define DT_MEM_ARM_MPU_FLASH            DT_MEM_ARM(ATTR_MPU_FLASH)
#define DT_MEM_ARM_MPU_PPB              DT_MEM_ARM(ATTR_MPU_PPB)
#define DT_MEM_ARM_MPU_IO               DT_MEM_ARM(ATTR_MPU_IO)
#define DT_MEM_ARM_MPU_EXTMEM           DT_MEM_ARM(ATTR_MPU_EXTMEM)
#define DT_MEM_ARM_MPU_UNKNOWN          DT_MEM_ARCH_ATTR_UNKNOWN
 
#endif /* ZEPHYR_INCLUDE_DT_BINDINGS_MEM_ATTR_ARM_H_ */