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* 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,
};
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