Remove PSA implementation for v8-M and dual CPU targets

[Patater]

Summary of changes

With Mbed 6, TrustedFirmware-M (TF-M) is the source of Mbed's implementation of PSA. This means Mbed 6 doesn't need to contain any code or tooling to build the v8-M or dual CPU secure binaries.

This patch set removes tooling, code, and targets that would have been used to make PSA secure binaries for v8-M or dual CPU platforms.

Impact of changes

• NXP LPC55S69 and Numaker M2351 support is temporarily dropped as compared to Mbed 5, as those targets are not supported in TF-M upstream.
• Exporters for v8-M and dual CPU PSA targets are not supported, due to TF-M limitations.
• It is no longer possible to use Mbed to build v8-M or dual CPU secure binaries.
• The following targets are removed compared to Mbed 5:
  • ARM_MUSCA_A1_S
  • ARM_MUSCA_B1_S
  • LPC55S69_NS
  • LPC55S69_S
  • HANI_IOT
  • NU_PFM_M2351_NS
  • NU_PFM_M2351_S

Migration actions required

Use Mbed 5.15 if you require PSA targets with exporter support, or one of the removed targets. LPC55S69 and Numaker M2351 will be supported in Mbed 6 at a later date, after the targets are supported by TF-M.

Documentation

New porting guide for PSA targets will be provided in a separate Mbed OS PR.

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Pull request type

[] Patch update (Bug fix / Target update / Docs update / Test update / Refactor)
[] Feature update (New feature / Functionality change / New API)
[X] Major update (Breaking change E.g. Return code change / API behaviour change)

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Test results

[] No Tests required for this change (E.g docs only update)
[X] Covered by existing mbed-os tests (Greentea or Unittest)
[] Tests / results supplied as part of this PR

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Reviewers

@Devran01 @jainvikas8

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[ciarmcom]

@Patater, thank you for your changes.
@ashok-rao @maclobdell @jainvikas8 @Devran01 @ARMmbed/mbed-os-crypto @ARMmbed/mbed-os-tools @ARMmbed/mbed-os-hal @ARMmbed/mbed-os-maintainers @ARMmbed/mbed-os-core @ARMmbed/mbed-os-test please review.

[0xc0170]

Please review tools failures in Travis:

0.55s$ coverage run -a tools/project.py -S | sed -n '/^Total/p'
Traceback (most recent call last):
  File "tools/project.py", line 412, in <module>
    main()
  File "tools/project.py", line 356, in main
    print_large_string(mcu_ide_matrix())
  File "/home/travis/build/ARMmbed/mbed-os/tools/export/__init__.py", line 102, in mcu_ide_matrix
    if EXPORTERS[ide].is_target_supported(target):
  File "/home/travis/build/ARMmbed/mbed-os/tools/export/cces/__init__.py", line 56, in is_target_supported
    if not target.is_TFM_target:
  File "/home/travis/build/ARMmbed/mbed-os/tools/targets/__init__.py", line 354, in __getattr__
    result = self.__getattr_helper(attrname)
  File "/home/travis/build/ARMmbed/mbed-os/tools/targets/__init__.py", line 347, in __getattr_helper
    % (attrname, self.name))
AttributeError: Attribute 'is_TFM_target' not found in target 'ARCH_BLE'

[Patater]

• Removed is_PSA_secure_target in commit "psa: Remove PSA secure binary building tools"
• Added is_TFM_target in commit "psa: Remove exporters for TF-M targets"

[MarceloSalazar]

@Patater note we need to keep the NS targets as they're still valid and expect to be supported in Mbed 6. Possibly rename the targets assuming they don't break with mbed-ls and greentea tools

• ARM_MUSCA_A1
• ARM_MUSCA_B1
• LPC55S69
• HANI_IOT
• NU_PFM_M2351

[urutva]

The copyright year should be 2020.

[Patater]

First rebased on latest master, with no other changes.

Then, rebased again to edit the "psa: Remove v8-M S targets" commit to fix a path issue in cmsis_nvic.h where the relative path of region_defs.h changed, but incorrectly wasn't updated. The relative path is used as the cmsis_nvic.h is used by linker scripts, and the Mbed OS build tools don't do the same globbing with linker script include paths as it does with C source include paths.

[0xc0170]

CI started

[mbed-ci]

Test run: FAILED

Summary: 2 of 3 test jobs failed
Build number : 4
Build artifacts

Failed test jobs:

• jenkins-ci/mbed-os-ci_build-ARM
• jenkins-ci/mbed-os-ci_build-GCC_ARM

[0xc0170]

Does this need CI update? It tries to build LPC55S69_NS and gets LPC55S69_NS is not a supported MCU an error.

[0xc0170]

CI started with updated CI config

[mbed-ci]

Test run: FAILED

Summary: 2 of 3 test jobs failed
Build number : 5
Build artifacts

Failed test jobs:

• jenkins-ci/mbed-os-ci_build-ARM
• jenkins-ci/mbed-os-ci_build-GCC_ARM

[0xc0170]

CI restarted

[mbed-ci]

Test run: SUCCESS

Summary: 6 of 6 test jobs passed
Build number : 6
Build artifacts

[0xc0170]

@Patater note we need to keep the NS targets as they're still valid and expect to be supported in Mbed 6. Possibly rename the targets assuming they don't break with mbed-ls and greentea tools

ARM_MUSCA_A1
ARM_MUSCA_B1
LPC55S69
HANI_IOT
NU_PFM_M2351

Has this been addressed ? We are removing these completely (_S and _NS), not keeping anything in the tree?

[0xc0170]

Got +1 from @andypowers, this is ready for integration