Help¶

Minimum size (and alignment) of an ARM MPU region. Use this symbol to guarantee minimum size and alignment of MPU regions. A minimum 4-byte alignment is enforced in ARM builds without support for Memory Protection.

Direct dependencies¶

CPU_HAS_MPU && ARM

(Includes any dependencies from if’s and menus.)

Defaults¶

32 if ARM_MPU && CPU_HAS_MPU && ARM
4 if CPU_HAS_MPU && ARM

Kconfig definition¶

At arch/arm/core/cortex_m/mpu/Kconfig:25

Included via Kconfig:10 → Kconfig.zephyr:29 → arch/Kconfig:15 → arch/arm/Kconfig:13 → arch/arm/core/Kconfig:168

Menu path: (top menu) → ARM Options

config ARM_MPU_REGION_MIN_ALIGN_AND_SIZE
    int
    default 32 if ARM_MPU && CPU_HAS_MPU && ARM
    default 4 if CPU_HAS_MPU && ARM
    depends on CPU_HAS_MPU && ARM
    help
      Minimum size (and alignment) of an ARM MPU region. Use this
      symbol to guarantee minimum size and alignment of MPU regions.
      A minimum 4-byte alignment is enforced in ARM builds without
      support for Memory Protection.

(Definitions include propagated dependencies, including from if’s and menus.)