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arch: arm: define the ARM_SECURE_FIRMWARE option

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This commit introduces the ARM_SECURE_FIRMWARE k-option,
which indicates that we are building an ARM Secure application.

Signed-off-by: Ioannis Glaropoulos <Ioannis.Glaropoulos@nordicsemi.no>
This commit is contained in:
Ioannis Glaropoulos 2018-03-01 21:15:54 +01:00 • committed by Kumar Gala
commit 5475de105b
1 changed files with 17 additions and 0 deletions
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17
arch/arm/core/Kconfig
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@ -42,6 +42,23 @@ config ARM_STACK_PROTECTION
This option enables MPU stack guard to cause a system fatal error This option enables MPU stack guard to cause a system fatal error
if the bounds of the current process stack are overflowed. if the bounds of the current process stack are overflowed.
config ARM_SECURE_FIRMWARE
bool
default n
help
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. The option is only applicable
to ARMv8-M MCUs that implement the Security Extension.
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.
menu "Architectue Floating Point Options" menu "Architectue Floating Point Options"
depends on CPU_HAS_FPU depends on CPU_HAS_FPU