1 /* 2 * Copyright (c) 2017 Synopsys 3 * 4 * SPDX-License-Identifier: Apache-2.0 5 */ 6 7 #include <zephyr/devicetree.h> 8 #include <zephyr/arch/arc/v2/mpu/arc_mpu.h> 9 #include <zephyr/linker/linker-defs.h> 10 11 /* 12 * for secure firmware, MPU entries are only set up for secure world. 13 * All regions not listed here are shared by secure world and normal world. 14 */ 15 static struct arc_mpu_region mpu_regions[] = { 16 #if DT_REG_SIZE(DT_INST(0, arc_iccm)) > 0 17 /* Region ICCM */ 18 MPU_REGION_ENTRY("ICCM", 19 DT_REG_ADDR(DT_INST(0, arc_iccm)), 20 DT_REG_SIZE(DT_INST(0, arc_iccm)), 21 REGION_ROM_ATTR), 22 #endif 23 #if DT_REG_SIZE(DT_INST(0, arc_dccm)) > 0 24 /* Region DCCM */ 25 MPU_REGION_ENTRY("DCCM", 26 DT_REG_ADDR(DT_INST(0, arc_dccm)), 27 DT_REG_SIZE(DT_INST(0, arc_dccm)), 28 REGION_KERNEL_RAM_ATTR | REGION_DYNAMIC), 29 #endif 30 31 #if DT_REG_SIZE(DT_INST(0, arc_xccm)) > 0 32 /* Region XCCM */ 33 MPU_REGION_ENTRY("XCCM", 34 DT_REG_ADDR(DT_INST(0, arc_xccm)), 35 DT_REG_SIZE(DT_INST(0, arc_xccm)), 36 REGION_KERNEL_RAM_ATTR | REGION_DYNAMIC), 37 #endif 38 #if DT_REG_SIZE(DT_INST(0, arc_yccm)) > 0 39 /* Region YCCM */ 40 MPU_REGION_ENTRY("YCCM", 41 DT_REG_ADDR(DT_INST(0, arc_yccm)), 42 DT_REG_SIZE(DT_INST(0, arc_yccm)), 43 REGION_KERNEL_RAM_ATTR | REGION_DYNAMIC), 44 #endif 45 46 #if DT_REG_SIZE(DT_INST(0, mmio_sram)) > 0 47 /* Region DDR RAM */ 48 MPU_REGION_ENTRY("DDR RAM", 49 DT_REG_ADDR(DT_INST(0, mmio_sram)), 50 DT_REG_SIZE(DT_INST(0, mmio_sram)), 51 AUX_MPU_ATTR_KW | AUX_MPU_ATTR_KR | AUX_MPU_ATTR_UR | 52 AUX_MPU_ATTR_KE | AUX_MPU_ATTR_UE | REGION_DYNAMIC), 53 #endif 54 55 /* 56 * Region peripheral is shared by secure world and normal world by default, 57 * no need a static mpu entry. If some peripherals belong to secure world, 58 * add it here. 59 */ 60 #ifndef CONFIG_ARC_SECURE_FIRMWARE 61 /* Region Peripheral */ 62 MPU_REGION_ENTRY("PERIPHERAL", 63 0xF0000000, 64 64 * 1024, 65 REGION_KERNEL_RAM_ATTR) 66 #endif 67 }; 68 69 struct arc_mpu_config mpu_config = { 70 .num_regions = ARRAY_SIZE(mpu_regions), 71 .mpu_regions = mpu_regions, 72 }; 73
