a8b6936c7d
ARC mpu version used a wrong number 3, could cause conflict in future. This commit fix this issue to version number 4. Signed-off-by: Yuguo Zou <yuguo.zou@synopsys.com>
39 lines
1.2 KiB
Plaintext
39 lines
1.2 KiB
Plaintext
# Memory Protection Unit (MPU) configuration options
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# Copyright (c) 2017 Synopsys
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# SPDX-License-Identifier: Apache-2.0
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config ARC_MPU_VER
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int "ARC MPU version"
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range 2 4
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default 2
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help
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ARC MPU has several versions. For MPU v2, the minimum region is 2048 bytes;
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For MPU v3 and v4, the minimum region is 32 bytes
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config ARC_CORE_MPU
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bool "ARC Core MPU functionalities"
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help
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ARC core MPU functionalities
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config MPU_STACK_GUARD
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bool "Thread Stack Guards"
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depends on ARC_CORE_MPU && ARC_MPU_VER !=2
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help
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Enable thread stack guards via MPU. ARC supports built-in stack protection.
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If your core supports that, it is preferred over MPU stack guard.
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For ARC_MPU_VER == 2, it requires 2048 extra bytes and a strong start address
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alignment, this will bring big waste of memory, so no support for it.
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config ARC_MPU
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bool "ARC MPU Support"
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select MPU
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select SRAM_REGION_PERMISSIONS
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select ARC_CORE_MPU
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select THREAD_STACK_INFO
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select GEN_PRIV_STACKS if ARC_MPU_VER = 2
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select MPU_REQUIRES_POWER_OF_TWO_ALIGNMENT if ARC_MPU_VER = 2
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select MPU_REQUIRES_NON_OVERLAPPING_REGIONS if ARC_MPU_VER = 4
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help
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Target has ARC MPU (currently only works for EMSK 2.2/2.3 ARCEM7D)
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