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