:orphan:

.. title:: ARM_SECURE_FIRMWARE

.. option:: CONFIG_ARM_SECURE_FIRMWARE

*(No prompt -- not directly user assignable.)*

Type: ``bool``

Help
====

This option indicates that we are building a Zephyr image that
is intended to execute in Secure state. The option is only
applicable to ARMv8-M MCUs that implement the Security Extension.

This option enables Zephyr to include code that executes in
Secure state, as well as to exclude code that is designed to
execute only in Non-secure state.

Code executing in Secure state has access to both the Secure
and Non-Secure resources of the Cortex-M MCU.

Code executing in Non-Secure state may trigger Secure Faults,
if Secure MCU resources are accessed from the Non-Secure state.
Secure Faults may only be handled by code executing in Secure
state.

Direct dependencies
===================

\ :option:`ARMV8_M_SE <CONFIG_ARMV8_M_SE>` && !\ :option:`ARM64 <CONFIG_ARM64>` && \ :option:`ARM <CONFIG_ARM>`

*(Includes any dependencies from ifs and menus.)*

Default
=======

- y if \ :option:`TRUSTED_EXECUTION_SECURE <CONFIG_TRUSTED_EXECUTION_SECURE>`

Kconfig definition
==================

.. highlight:: kconfig

At ``arch/arm/core/aarch32/Kconfig:176``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:29`` → ``arch/Kconfig:12`` → ``arch/arm/Kconfig:42``

Menu path: (Top) → ARM Options

.. parsed-literal::

    config ARM_SECURE_FIRMWARE
    	bool
    	default y if \ :option:`TRUSTED_EXECUTION_SECURE <CONFIG_TRUSTED_EXECUTION_SECURE>`
    	depends on \ :option:`ARMV8_M_SE <CONFIG_ARMV8_M_SE>` && !\ :option:`ARM64 <CONFIG_ARM64>` && \ :option:`ARM <CONFIG_ARM>`
    	help
    	  This option indicates that we are building a Zephyr image that
    	  is intended to execute in Secure state. The option is only
    	  applicable to ARMv8-M MCUs that implement the Security Extension.
	  
    	  This option enables Zephyr to include code that executes in
    	  Secure state, as well as to exclude code that is designed to
    	  execute only in Non-secure state.
	  
    	  Code executing in Secure state has access to both the Secure
    	  and Non-Secure resources of the Cortex-M MCU.
	  
    	  Code executing in Non-Secure state may trigger Secure Faults,
    	  if Secure MCU resources are accessed from the Non-Secure state.
    	  Secure Faults may only be handled by code executing in Secure
    	  state.

*(The 'depends on' condition includes propagated dependencies from ifs and menus.)*