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zephyr/arch/arc/core/mpu/Kconfig

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kconfig: Clean up header comments and make them consistent Use this short header style in all Kconfig files: # <description> # <copyright> # <license> ... Also change all <description>s from # Kconfig[.extension] - Foo-related options to just # Foo-related options It's clear enough that it's about Kconfig. The <description> cleanup was done with this command, along with some manual cleanup (big letter at the start, etc.) git ls-files '*Kconfig*' | \ xargs sed -i -E '1 s/#\s*Kconfig[\w.-]*\s*-\s*/# /' Signed-off-by: Ulf Magnusson <Ulf.Magnusson@nordicsemi.no>
2019-11-01 20:45:29 +08:00
# Memory Protection Unit (MPU) configuration options
arch: arc: Add mpu support * add arc mpu driver * modify the corresponding kconfig and kbuild * currently only em_starterkit 2.2's em7d configuration has mpu feature (mpu version 2) * as the minimum region size of arc mpu version 2 is 2048 bytes and region size should be power of 2, the stack size of threads (including main thread and idle thread) should be at least 2048 bytes and power of 2 * for mpu stack guard feature, a stack guard region of 2048 bytes is generated. This brings more memory footprint * For arc mpu version 3, the minimum region size is 32 bytes. * the codes are tested by the mpu_stack_guard_test and stackprot Signed-off-by: Wayne Ren <wei.ren@synopsys.com>
2017-08-15 12:20:42 +08:00
# Copyright (c) 2017 Synopsys
# SPDX-License-Identifier: Apache-2.0
kconfig: Clean up header comments and make them consistent Use this short header style in all Kconfig files: # <description> # <copyright> # <license> ... Also change all <description>s from # Kconfig[.extension] - Foo-related options to just # Foo-related options It's clear enough that it's about Kconfig. The <description> cleanup was done with this command, along with some manual cleanup (big letter at the start, etc.) git ls-files '*Kconfig*' | \ xargs sed -i -E '1 s/#\s*Kconfig[\w.-]*\s*-\s*/# /' Signed-off-by: Ulf Magnusson <Ulf.Magnusson@nordicsemi.no>
2019-11-01 20:45:29 +08:00
arch: arc: Add mpu support * add arc mpu driver * modify the corresponding kconfig and kbuild * currently only em_starterkit 2.2's em7d configuration has mpu feature (mpu version 2) * as the minimum region size of arc mpu version 2 is 2048 bytes and region size should be power of 2, the stack size of threads (including main thread and idle thread) should be at least 2048 bytes and power of 2 * for mpu stack guard feature, a stack guard region of 2048 bytes is generated. This brings more memory footprint * For arc mpu version 3, the minimum region size is 32 bytes. * the codes are tested by the mpu_stack_guard_test and stackprot Signed-off-by: Wayne Ren <wei.ren@synopsys.com>
2017-08-15 12:20:42 +08:00
config ARC_MPU_VER
Kconfig: Use a short, consistent style for prompts Consistently use config FOO bool/int/hex/string "Prompt text" instead of config FOO bool/int/hex/string prompt "Prompt text" (...and a bunch of other variations that e.g. swapped the order of the type and the 'prompt', or put other properties between them). The shorthand is fully equivalent to using 'prompt'. It saves lines and avoids tricking people into thinking there is some semantic difference. Most of the grunt work was done by a modified version of https://unix.stackexchange.com/questions/26284/ how-can-i-use-sed-to-replace-a-multi-line-string/26290#26290, but some of the rarer variations had to be converted manually. Signed-off-by: Ulf Magnusson <Ulf.Magnusson@nordicsemi.no>
2018-08-14 22:19:20 +08:00
int "ARC MPU version"
ARC: Add mpuv8 support Turn on mpuv8 support for ARC SEM cpus Signed-off-by: Nikolay Agishev <agishev@synopsys.com>
2023-02-15 21:37:58 +08:00
range 2 8
arch: arc: Add mpu support * add arc mpu driver * modify the corresponding kconfig and kbuild * currently only em_starterkit 2.2's em7d configuration has mpu feature (mpu version 2) * as the minimum region size of arc mpu version 2 is 2048 bytes and region size should be power of 2, the stack size of threads (including main thread and idle thread) should be at least 2048 bytes and power of 2 * for mpu stack guard feature, a stack guard region of 2048 bytes is generated. This brings more memory footprint * For arc mpu version 3, the minimum region size is 32 bytes. * the codes are tested by the mpu_stack_guard_test and stackprot Signed-off-by: Wayne Ren <wei.ren@synopsys.com>
2017-08-15 12:20:42 +08:00
default 2
help
kconfig: fix help syntax and add spaces Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2017-12-13 23:08:21 +08:00
ARC MPU has several versions. For MPU v2, the minimum region is 2048 bytes;
arch: arc: add support of mpu v6 Add support of ARC mpu v6 * minimal region size down to 32 bytes * maximal region number up to 32 * not support uncacheable region and volatile uncached region * clean up mpu code for better readablity Signed-off-by: Yuguo Zou <yuguo.zou@synopsys.com>
2021-08-24 20:42:46 +08:00
For other versions, the minimum region is 32 bytes; v4 has secure features,
ARC: Add mpuv8 support Turn on mpuv8 support for ARC SEM cpus Signed-off-by: Nikolay Agishev <agishev@synopsys.com>
2023-02-15 21:37:58 +08:00
v6 supports up to 32 regions. Note: MPU v5 & v7 are not supported.
arch: arc: Add mpu support * add arc mpu driver * modify the corresponding kconfig and kbuild * currently only em_starterkit 2.2's em7d configuration has mpu feature (mpu version 2) * as the minimum region size of arc mpu version 2 is 2048 bytes and region size should be power of 2, the stack size of threads (including main thread and idle thread) should be at least 2048 bytes and power of 2 * for mpu stack guard feature, a stack guard region of 2048 bytes is generated. This brings more memory footprint * For arc mpu version 3, the minimum region size is 32 bytes. * the codes are tested by the mpu_stack_guard_test and stackprot Signed-off-by: Wayne Ren <wei.ren@synopsys.com>
2017-08-15 12:20:42 +08:00
config ARC_CORE_MPU
bool "ARC Core MPU functionalities"
help
arch: arc: apply STACK_GUARD_SIZE and optimize the mpu driver * apply STACK_GUARD_SIZE, no extra space will be added if MPU_STACK_GUARD is disabled * When ARC_STACK_CHECKING is enabled, MPU_STACK_GUARD will be disabled * add two new api: arc_core_mpu_default and arc_core_mpu_region to configure mpu regions * improve arc_core_mpu_enable and arc_core_mpu_disable Signed-off-by: Wayne Ren <wei.ren@synopsys.com>
2017-08-16 16:59:54 +08:00
ARC core MPU functionalities
arch: arc: Add mpu support * add arc mpu driver * modify the corresponding kconfig and kbuild * currently only em_starterkit 2.2's em7d configuration has mpu feature (mpu version 2) * as the minimum region size of arc mpu version 2 is 2048 bytes and region size should be power of 2, the stack size of threads (including main thread and idle thread) should be at least 2048 bytes and power of 2 * for mpu stack guard feature, a stack guard region of 2048 bytes is generated. This brings more memory footprint * For arc mpu version 3, the minimum region size is 32 bytes. * the codes are tested by the mpu_stack_guard_test and stackprot Signed-off-by: Wayne Ren <wei.ren@synopsys.com>
2017-08-15 12:20:42 +08:00
config MPU_STACK_GUARD
bool "Thread Stack Guards"
arch: arc: remove MPU_STACK_GUARD for ARC_MPU_VER 2 ARC_MPU_VER 2 has a strong requirement in * size, must be >= 2048 bytes and power of 2 * start address must be aligned to size It may bring a big waste of memory. On the other hand, GEN_PRIV_STACK is used for ARC_MPU_VER 2, it conflicts with MPU_STACK_GUARD. So considering the limmitations, remove MPU_STACK_GUARD for ARC_MPU_VER 2 Signed-off-by: Wayne Ren <wei.ren@synopsys.com>
2020-04-18 11:42:36 +08:00
depends on ARC_CORE_MPU && ARC_MPU_VER !=2
arch: arc: Add mpu support * add arc mpu driver * modify the corresponding kconfig and kbuild * currently only em_starterkit 2.2's em7d configuration has mpu feature (mpu version 2) * as the minimum region size of arc mpu version 2 is 2048 bytes and region size should be power of 2, the stack size of threads (including main thread and idle thread) should be at least 2048 bytes and power of 2 * for mpu stack guard feature, a stack guard region of 2048 bytes is generated. This brings more memory footprint * For arc mpu version 3, the minimum region size is 32 bytes. * the codes are tested by the mpu_stack_guard_test and stackprot Signed-off-by: Wayne Ren <wei.ren@synopsys.com>
2017-08-15 12:20:42 +08:00
help
arch: arc: apply STACK_GUARD_SIZE and optimize the mpu driver * apply STACK_GUARD_SIZE, no extra space will be added if MPU_STACK_GUARD is disabled * When ARC_STACK_CHECKING is enabled, MPU_STACK_GUARD will be disabled * add two new api: arc_core_mpu_default and arc_core_mpu_region to configure mpu regions * improve arc_core_mpu_enable and arc_core_mpu_disable Signed-off-by: Wayne Ren <wei.ren@synopsys.com>
2017-08-16 16:59:54 +08:00
Enable thread stack guards via MPU. ARC supports built-in stack protection.
arch: arc: remove MPU_STACK_GUARD for ARC_MPU_VER 2 ARC_MPU_VER 2 has a strong requirement in * size, must be >= 2048 bytes and power of 2 * start address must be aligned to size It may bring a big waste of memory. On the other hand, GEN_PRIV_STACK is used for ARC_MPU_VER 2, it conflicts with MPU_STACK_GUARD. So considering the limmitations, remove MPU_STACK_GUARD for ARC_MPU_VER 2 Signed-off-by: Wayne Ren <wei.ren@synopsys.com>
2020-04-18 11:42:36 +08:00
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.
arch: arc: Add mpu support * add arc mpu driver * modify the corresponding kconfig and kbuild * currently only em_starterkit 2.2's em7d configuration has mpu feature (mpu version 2) * as the minimum region size of arc mpu version 2 is 2048 bytes and region size should be power of 2, the stack size of threads (including main thread and idle thread) should be at least 2048 bytes and power of 2 * for mpu stack guard feature, a stack guard region of 2048 bytes is generated. This brings more memory footprint * For arc mpu version 3, the minimum region size is 32 bytes. * the codes are tested by the mpu_stack_guard_test and stackprot Signed-off-by: Wayne Ren <wei.ren@synopsys.com>
2017-08-15 12:20:42 +08:00
config ARC_MPU
bool "ARC MPU Support"
arch: mem protect Kconfig cleanups Adds a new CONFIG_MPU which is set if an MPU is enabled. This is a menuconfig will some MPU-specific options moved under it. MEMORY_PROTECTION and SRAM_REGION_PERMISSIONS have been merged. This configuration depends on an MMU or MPU. The protection test is updated accordingly. Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
2020-11-06 06:30:20 +08:00
select MPU
select SRAM_REGION_PERMISSIONS
arch: arc: Add mpu support * add arc mpu driver * modify the corresponding kconfig and kbuild * currently only em_starterkit 2.2's em7d configuration has mpu feature (mpu version 2) * as the minimum region size of arc mpu version 2 is 2048 bytes and region size should be power of 2, the stack size of threads (including main thread and idle thread) should be at least 2048 bytes and power of 2 * for mpu stack guard feature, a stack guard region of 2048 bytes is generated. This brings more memory footprint * For arc mpu version 3, the minimum region size is 32 bytes. * the codes are tested by the mpu_stack_guard_test and stackprot Signed-off-by: Wayne Ren <wei.ren@synopsys.com>
2017-08-15 12:20:42 +08:00
select ARC_CORE_MPU
arch: arc: modify the kconfig for mpu case * user space support requires THREAD_INFO * for MPU version 2, the stack align is at least 2048 bytes * the smallest mpu region is 2048 bytes * the region size must bt power of 2 * the start address of region must be aligned to the region size Signed-off-by: Wayne Ren <wei.ren@synopsys.com>
2018-02-01 16:36:47 +08:00
select THREAD_STACK_INFO
ARC: MPU: Add MPUv8 fixes Add mpuv8-related fixes that setup alignment and region overlapping Signed-off-by: Nikolay Agishev <agishev@synopsys.com>
2023-05-24 18:24:15 +08:00
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)
arch: arc: Add mpu support * add arc mpu driver * modify the corresponding kconfig and kbuild * currently only em_starterkit 2.2's em7d configuration has mpu feature (mpu version 2) * as the minimum region size of arc mpu version 2 is 2048 bytes and region size should be power of 2, the stack size of threads (including main thread and idle thread) should be at least 2048 bytes and power of 2 * for mpu stack guard feature, a stack guard region of 2048 bytes is generated. This brings more memory footprint * For arc mpu version 3, the minimum region size is 32 bytes. * the codes are tested by the mpu_stack_guard_test and stackprot Signed-off-by: Wayne Ren <wei.ren@synopsys.com>
2017-08-15 12:20:42 +08:00
help
ARC: MPU: Add MPUv8 fixes Add mpuv8-related fixes that setup alignment and region overlapping Signed-off-by: Nikolay Agishev <agishev@synopsys.com>
2023-05-24 18:24:15 +08:00
Target has ARC MPU