| /* |
| * Copyright (c) 2017 Synopsys |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| #include <zephyr/devicetree.h> |
| #include <zephyr/arch/arc/v2/mpu/arc_mpu.h> |
| #include <zephyr/arch/arc/arch.h> |
| #include <zephyr/linker/linker-defs.h> |
| |
| /* |
| * for secure firmware, MPU entries are only set up for secure world. |
| * All regions not listed here are shared by secure world and normal world. |
| */ |
| static struct arc_mpu_region mpu_regions[] = { |
| |
| #if defined(CONFIG_COVERAGE_GCOV) && defined(CONFIG_USERSPACE) |
| /* Region Coverage */ |
| MPU_REGION_ENTRY("COVERAGE", |
| (uint32_t)&(__gcov_bss_start), |
| (uint32_t)&__gcov_bss_size, |
| REGION_IO_ATTR), |
| #endif /* CONFIG_COVERAGE_GCOV && CONFIG_USERSPACE */ |
| |
| #ifdef CONFIG_HARVARD |
| #if DT_REG_SIZE(DT_INST(0, arc_iccm)) > 0 |
| /* Region ICCM */ |
| MPU_REGION_ENTRY("ICCM", |
| DT_REG_ADDR(DT_INST(0, arc_iccm)), |
| DT_REG_SIZE(DT_INST(0, arc_iccm)), |
| REGION_ROM_ATTR), |
| #endif |
| #if DT_REG_SIZE(DT_INST(0, arc_dccm)) > 0 |
| /* Region DCCM */ |
| MPU_REGION_ENTRY("DCCM", |
| DT_REG_ADDR(DT_INST(0, arc_dccm)), |
| DT_REG_SIZE(DT_INST(0, arc_dccm)), |
| REGION_KERNEL_RAM_ATTR | REGION_DYNAMIC), |
| #endif |
| #if DT_REG_SIZE(DT_INST(0, arc_xccm)) > 0 |
| /* Region XCCM */ |
| MPU_REGION_ENTRY("XCCM", |
| DT_REG_ADDR(DT_INST(0, arc_xccm)), |
| DT_REG_SIZE(DT_INST(0, arc_xccm)), |
| REGION_KERNEL_RAM_ATTR | REGION_DYNAMIC), |
| #endif |
| #if DT_REG_SIZE(DT_INST(0, arc_yccm)) > 0 |
| /* Region YCCM */ |
| MPU_REGION_ENTRY("YCCM", |
| DT_REG_ADDR(DT_INST(0, arc_yccm)), |
| DT_REG_SIZE(DT_INST(0, arc_yccm)), |
| REGION_KERNEL_RAM_ATTR | REGION_DYNAMIC), |
| #endif |
| |
| #else /* !CONFIG_HARVARD */ |
| |
| #if DT_REG_SIZE(DT_CHOSEN(zephyr_sram)) > 0 |
| #if CONFIG_XIP |
| /* Region RAM */ |
| MPU_REGION_ENTRY("RAM", |
| DT_REG_ADDR(DT_CHOSEN(zephyr_sram)), |
| DT_REG_SIZE(DT_CHOSEN(zephyr_sram)), |
| REGION_KERNEL_RAM_ATTR | REGION_DYNAMIC), |
| #else /* !CONFIG_XIP */ |
| MPU_REGION_ENTRY("RAM_RX", |
| (uintptr_t)__rom_region_start, |
| (uintptr_t)__rom_region_size, |
| REGION_ROM_ATTR), |
| |
| MPU_REGION_ENTRY("RAM_RW", |
| (uintptr_t)_image_ram_start, |
| (uintptr_t)__arc_rw_sram_size, |
| REGION_KERNEL_RAM_ATTR | REGION_DYNAMIC), |
| #endif /* CONFIG_XIP */ |
| #endif /* zephyr_sram > 0 */ |
| |
| #if DT_REG_SIZE(DT_CHOSEN(zephyr_flash)) > 0 |
| /* Region FLASH */ |
| MPU_REGION_ENTRY("FLASH", |
| DT_REG_ADDR(DT_CHOSEN(zephyr_flash)), |
| DT_REG_SIZE(DT_CHOSEN(zephyr_flash)), |
| REGION_ROM_ATTR), |
| #endif |
| |
| #endif /* CONFIG_HARVARD */ |
| |
| /* |
| * Region peripheral is shared by secure world and normal world by default, |
| * no need a static mpu entry. If some peripherals belong to secure world, |
| * add it here. |
| */ |
| #ifndef CONFIG_ARC_SECURE_FIRMWARE |
| /* Region Peripheral */ |
| MPU_REGION_ENTRY("PERIPHERAL", |
| 0xF0000000, |
| 64 * 1024, |
| REGION_KERNEL_RAM_ATTR), |
| #endif |
| }; |
| |
| struct arc_mpu_config mpu_config = { |
| .num_regions = ARRAY_SIZE(mpu_regions), |
| .mpu_regions = mpu_regions, |
| }; |