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Armv8.1-m: Add pacbti support (#1147)

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* copyright-checker: Add FreeRTOS Arm collab copyright

FreeRTOS Arm collab files shall have both Amazon's
and Arm's copyright headers. Hence, the copyright
checker is modified to check for both copyrights.

Signed-off-by: Gaurav Aggarwal <aggarg@amazon.com>

* armv8-m: Add support for IAR with TFM FREERTOS PORT

As the case for ARMClang, and GCC toolchains, IAR
with TFM FreeRTOS Port support is added.

Signed-off-by: Ahmed Ismail <Ahmed.Ismail@arm.com>

* armv8-m: Do not overwrite Control register value

The current ARMv8-M FreeRTOS-Kernel Port code
implementation is modified in a way that allows
the CONTROL register's value to be retained
rather than being overwritten.

This is needed for adding PACBTI support as
the special-purpose CONTROL register `PAC_EN`,
`UPAC_EN`, `BTI_EN`, and `UBTI_EN` PACBTI
enablement bits should be configured before calling
`vRestoreContextOfFirstTask()` function which currently
overwrite the value inside the CONTROL register.

Signed-off-by: Ahmed Ismail <Ahmed.Ismail@arm.com>

* armv8.1-m: Add PACBTI support to kernel non-secure implementation

In this commit, Pointer Authentication, and Branch Target
Identification Extension (PACBTI) support is added for
Non-Secure and Non-TrustZone variants of Cortex-M85
FreeRTOS-Kernel Port.

The PACBTI support is added for Arm Compiler For
Embedded, and IAR toolchains only. The support in
the kernel is not yet enabled for GNU toolchain
due to known issues.

Signed-off-by: Ahmed Ismail <Ahmed.Ismail@arm.com>

* Fix CI check

Signed-off-by: Gaurav Aggarwal <aggarg@amazon.com>

---------

Signed-off-by: Gaurav Aggarwal <aggarg@amazon.com>
Signed-off-by: Ahmed Ismail <Ahmed.Ismail@arm.com>
Co-authored-by: Ahmed Ismail <ahmism01@e133373.arm.com>
Co-authored-by: Gaurav Aggarwal <aggarg@amazon.com>
This commit is contained in:
Ahmed Ismail 2024-10-24 07:25:16 +01:00 • committed by GitHub
parent e400cc93b7
commit 7081e76f5a
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81 changed files with 2430 additions and 92 deletions
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12
include/FreeRTOS.h
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@ -3032,6 +3032,18 @@
#define configCONTROL_INFINITE_LOOP()
#endif
/* Set configENABLE_PAC and/or configENABLE_BTI to 1 to enable PAC and/or BTI
* support and 0 to disable them. These are currently used in ARMv8.1-M ports. */
#if ( portHAS_PACBTI_FEATURE == 1 )
#ifndef configENABLE_PAC
#define configENABLE_PAC 0
#endif
#ifndef configENABLE_BTI
#define configENABLE_BTI 0
#endif
#endif
/* Sometimes the FreeRTOSConfig.h settings only allow a task to be created using
* dynamically allocated RAM, in which case when any task is deleted it is known
* that both the task's stack and TCB need to be freed. Sometimes the