1 /* 2 * Copyright (c) 2023 Carlo Caione <ccaione@baylibre.com> 3 * 4 * SPDX-License-Identifier: Apache-2.0 5 */ 6 #ifndef ZEPHYR_INCLUDE_DT_BINDINGS_MEM_ATTR_ARM_H_ 7 #define ZEPHYR_INCLUDE_DT_BINDINGS_MEM_ATTR_ARM_H_ 8 9 #include <zephyr/sys/util_macro.h> 10 #include <zephyr/dt-bindings/memory-attr/memory-attr.h> 11 12 /* 13 * Architecture specific ARM MPU related attributes. 14 * 15 * This list is to seamlessy support the MPU regions configuration using DT and 16 * the `zephyr,memory-attr` property. 17 * 18 * This is legacy and it should NOT be extended further. If new MPU region 19 * types must be added, these must rely on the generic memory attributes. 20 */ 21 #define DT_MEM_ARM_MASK DT_MEM_ARCH_ATTR_MASK 22 #define DT_MEM_ARM_GET(x) ((x) & DT_MEM_ARM_MASK) 23 #define DT_MEM_ARM(x) ((x) << DT_MEM_ARCH_ATTR_SHIFT) 24 25 #define ATTR_MPU_RAM BIT(0) 26 #define ATTR_MPU_RAM_NOCACHE BIT(1) 27 #define ATTR_MPU_FLASH BIT(2) 28 #define ATTR_MPU_PPB BIT(3) 29 #define ATTR_MPU_IO BIT(4) 30 #define ATTR_MPU_EXTMEM BIT(5) 31 32 #define DT_MEM_ARM_MPU_RAM DT_MEM_ARM(ATTR_MPU_RAM) 33 #define DT_MEM_ARM_MPU_RAM_NOCACHE DT_MEM_ARM(ATTR_MPU_RAM_NOCACHE) 34 #define DT_MEM_ARM_MPU_FLASH DT_MEM_ARM(ATTR_MPU_FLASH) 35 #define DT_MEM_ARM_MPU_PPB DT_MEM_ARM(ATTR_MPU_PPB) 36 #define DT_MEM_ARM_MPU_IO DT_MEM_ARM(ATTR_MPU_IO) 37 #define DT_MEM_ARM_MPU_EXTMEM DT_MEM_ARM(ATTR_MPU_EXTMEM) 38 #define DT_MEM_ARM_MPU_UNKNOWN DT_MEM_ARCH_ATTR_UNKNOWN 39 40 #endif /* ZEPHYR_INCLUDE_DT_BINDINGS_MEM_ATTR_ARM_H_ */ 41
