# ARM architecture configuration options # Copyright (c) 2014-2015 Wind River Systems, Inc. # SPDX-License-Identifier: Apache-2.0 menu "ARM Options" depends on ARM config ARCH default "arm" config CPU_CORTEX bool help This option signifies the use of a CPU of the Cortex family. config ARM_CUSTOM_INTERRUPT_CONTROLLER bool depends on !CPU_CORTEX_M help This option indicates that the ARM CPU is connected to a custom (i.e. non-GIC) interrupt controller. A number of Cortex-A and Cortex-R cores (Cortex-A5, Cortex-R4/5, ...) allow interfacing to a custom external interrupt controller and this option must be selected when such cores are connected to an interrupt controller that is not the ARM Generic Interrupt Controller (GIC). When this option is selected, the architecture interrupt control functions are mapped to the SoC interrupt control interface, which is implemented at the SoC level. N.B. This option is only applicable to the Cortex-A and Cortex-R family cores. The Cortex-M family cores are always equipped with the ARM Nested Vectored Interrupt Controller (NVIC). config CODE_DATA_RELOCATION_SRAM bool "Relocate code/data sections to SRAM" depends on CPU_CORTEX_M select CODE_DATA_RELOCATION help When selected this will relocate .text, data and .bss sections from the specified files and places it in SRAM. The files should be specified in the CMakeList.txt file with a cmake API zephyr_code_relocate(). This config is used to create an MPU entry for the SRAM space used for code relocation. config ARM_ON_ENTER_CPU_IDLE_HOOK bool help Enables a hook (z_arm_on_enter_cpu_idle()) that is called when the CPU is made idle (by k_cpu_idle() or k_cpu_atomic_idle()). If needed, this hook can be used to prevent the CPU from actually entering sleep by skipping the WFE/WFI instruction. config ARM_ON_ENTER_CPU_IDLE_PREPARE_HOOK bool help Enables a hook (z_arm_on_enter_cpu_idle_prepare()) that is called when the CPU is made idle (by k_cpu_idle() or k_cpu_atomic_idle()). If needed, this hook can prepare data to upcoming call to z_arm_on_enter_cpu_idle(). The z_arm_on_enter_cpu_idle_prepare differs from z_arm_on_enter_cpu_idle because it is called before interrupts are disabled. config ARM_ON_EXIT_CPU_IDLE bool help Enables a possibility to inject SoC-specific code just after WFI/WFE instructions of the cpu idle implementation. Enabling this option requires that the SoC provides a soc_cpu_idle.h header file which defines SOC_ON_EXIT_CPU_IDLE macro guarded by _ASMLANGUAGE. The SOC_ON_EXIT_CPU_IDLE macro is expanded just after WFI/WFE instructions before any memory access is performed. The purpose of the SOC_ON_EXIT_CPU_IDLE is to perform an action that mitigate issues observed on some SoCs caused by a memory access following WFI/WFE instructions. rsource "core/Kconfig" rsource "core/Kconfig.vfp" endmenu