7180c515c4
Regarding recent changes in general MPU configuration (https://github.com/zephyrproject-rtos/zephyr/pull/71969), add appropriate configs for isolating thread stacks into ARC MPU. Signed-off-by: Nikolay Agishev <agishev@synopsys.com>
42 lines
1.4 KiB
Plaintext
42 lines
1.4 KiB
Plaintext
# Memory Protection Unit (MPU) configuration options
|
|
|
|
# Copyright (c) 2017 Synopsys
|
|
# SPDX-License-Identifier: Apache-2.0
|
|
|
|
config ARC_MPU_VER
|
|
int "ARC MPU version"
|
|
range 2 8
|
|
default 2
|
|
help
|
|
ARC MPU has several versions. For MPU v2, the minimum region is 2048 bytes;
|
|
For other versions, the minimum region is 32 bytes; v4 has secure features,
|
|
v6 supports up to 32 regions. Note: MPU v5 & v7 are not supported.
|
|
|
|
config ARC_CORE_MPU
|
|
bool "ARC Core MPU functionalities"
|
|
help
|
|
ARC core MPU functionalities
|
|
|
|
config MPU_STACK_GUARD
|
|
bool "Thread Stack Guards"
|
|
depends on ARC_CORE_MPU && ARC_MPU_VER !=2
|
|
help
|
|
Enable thread stack guards via MPU. ARC supports built-in stack protection.
|
|
If your core supports that, it is preferred over MPU stack guard.
|
|
For ARC_MPU_VER == 2, it requires 2048 extra bytes and a strong start address
|
|
alignment, this will bring big waste of memory, so no support for it.
|
|
|
|
config ARC_MPU
|
|
bool "ARC MPU Support"
|
|
select MPU
|
|
select SRAM_REGION_PERMISSIONS
|
|
select ARC_CORE_MPU
|
|
select THREAD_STACK_INFO
|
|
select GEN_PRIV_STACKS if !(ARC_MPU_VER = 4 || ARC_MPU_VER = 8)
|
|
select MPU_REQUIRES_POWER_OF_TWO_ALIGNMENT if !(ARC_MPU_VER = 4 || ARC_MPU_VER = 8)
|
|
select MPU_REQUIRES_NON_OVERLAPPING_REGIONS if (ARC_MPU_VER = 4 || ARC_MPU_VER = 8)
|
|
select ARCH_MEM_DOMAIN_SUPPORTS_ISOLATED_STACKS
|
|
select MEM_DOMAIN_ISOLATED_STACKS
|
|
help
|
|
Target has ARC MPU
|