59 lines
1.5 KiB
C
59 lines
1.5 KiB
C
/*
|
|
* Copyright (c) 2017 Synopsys
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
#include <devicetree.h>
|
|
#include <soc.h>
|
|
#include <arch/arc/v2/mpu/arc_mpu.h>
|
|
#include <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 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, mmio_sram)) > 0
|
|
/* Region DDR RAM */
|
|
MPU_REGION_ENTRY("DDR RAM",
|
|
DT_REG_ADDR(DT_INST(0, mmio_sram)),
|
|
DT_REG_SIZE(DT_INST(0, mmio_sram)),
|
|
AUX_MPU_ATTR_KW | AUX_MPU_ATTR_KR | AUX_MPU_ATTR_UR |
|
|
AUX_MPU_ATTR_KE | AUX_MPU_ATTR_UE | REGION_DYNAMIC),
|
|
#endif
|
|
|
|
/*
|
|
* 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,
|
|
};
|