diff options
| author | hanzhijian <[email protected]> | 2026-08-25 09:19:51 +0800 |
|---|---|---|
| committer | Rbb666 <[email protected]> | 2026-08-26 10:37:02 +0800 |
| commit | e2e6245aace07b545b8dbcef8fbcdb4469f55d9f (patch) | |
| tree | b17de7aed93f98eeded0d760553e212d40df5ca6 /components | |
| parent | 45679c79de6d60f2e8345928c49671936f6ff008 (diff) | |
[arm][cortex-m4] Add hardware stack guard support
Enable RT_USING_HW_STACK_GUARD on Cortex-M4, which was previously only
available on Cortex-M7 and Cortex-M33.
Core porting (libcpu/arm/cortex-m4/):
- Add mpu.c/mpu.h/mputype.h aligned with the Cortex-M7 MPU layer. The only
difference is the default memory type attribute: Cortex-M4 has no L1 cache,
so the cacheability bits are reduced to three cases.
- Add rt_hw_stack_guard_init() to cpuport.c.
- Add missing #include <rtconfig.h> to context_gcc.S and invoke
rt_hw_mpu_table_switch() in the PendSV context switch path.
- Update SConscript to exclude mpu.c when memory protection is disabled.
BSP reference (bsp/stm32/stm32f407-fk407m2-zgt6/):
- board.h: include rtthread.h and define NUM_STATIC_REGIONS.
- board.c: define static_regions[] marking the Flash region read-only,
guarded by RT_USING_MEM_PROTECTION so it is not enabled by default.
Diffstat (limited to 'components')
0 files changed, 0 insertions, 0 deletions