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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"
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
range 2 4
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;
For MPU v3, the minimum region is 32 bytes
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"
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
kernel: expose k_mem_partition_attr_t outside User mode This commit exposes k_mem_partition_attr_t outside User Mode, so we can use struct k_mem_partition for defining memory partitions outside the scope of user space (for example, to describe thread stack guards or no-cacheable MPU regions). A requirement is that the Zephyr build supports Memory protection. To signify this, a new hidden, all-architecture Kconfig symbol is defined (MPU). In the wake of exposing k_mem_partition_attr_t, the commit exposes the MPU architecture-specific access permission attribute macros outside the User space context (for all ARCHs), so they can be used in a more generic way. Signed-off-by: Ioannis Glaropoulos <Ioannis.Glaropoulos@nordicsemi.no>
2018-11-27 22:45:36 +08:00
select MEMORY_PROTECTION
arch: arc: ARC MPUv3 doesn't use GEN_PRIV_STACK Because ARC MPUv3 doesn't have a strong alignment requirement as ARC MPUv2 does, no use of GEN_PRIV_STACK for it. Without GEN_PRIV_STACK, all stack elements can be in one stack object. See #24048. Signed-off-by: Wayne Ren <wei.ren@synopsys.com>
2020-04-03 12:25:29 +08:00
select GEN_PRIV_STACKS if ARC_MPU_VER = 2
arch: arc: MPUv2 enables MPU_REQUIRES_POWER_OF_TWO_ALIGNMENT enable MPU_REQUIRES_POWER_OF_TWO_ALIGNMENT for ARC MPU v2 Signed-off-by: Wayne Ren <wei.ren@synopsys.com>
2018-02-12 19:29:54 +08:00
select MPU_REQUIRES_POWER_OF_TWO_ALIGNMENT if ARC_MPU_VER = 2
arch: arc: enable MPU_REQUIRES_NON_OVERLAPPING_REGIONS for arc mpu ver 3 arc mpu ver3 does not allow mpu region overlap, so need to enable MPU_REQUIRES_NON_OVERLAPPING_REGIONS. Signed-off-by: Wayne Ren <wei.ren@synopsys.com>
2019-11-28 16:27:59 +08:00
select MPU_REQUIRES_NON_OVERLAPPING_REGIONS if ARC_MPU_VER = 3
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: add the support of MPU version 3 MPU version 3 is included in em7d of em_starterkit 2.3. The differences of MPU version 3 and version 2 are: * different aux reg interface * The address alignment requirement is 32 bytes * supports secure mode * supports SID (option) * does not support memory region overlap This commit adds the support MPU version 3 and also make some changes to MPU version 2 to have an unified interface. Signed-off-by: Wayne Ren <wei.ren@synopsys.com>
2017-11-29 17:42:00 +08:00
Target has ARC MPU (currently only works for EMSK 2.2/2.3 ARCEM7D)