CMake: Only build unit tests if Mbed OS is the current project ...

Typically when adding a unit test directory to a CMake project a check
will be used to ensure the subdirectory is added only if the following
are true:

* The BUILD_TESTING option is set to ON.
* The current CMake project is the top-level project.

The reason being, if a downstream project includes our project they
generally don't want to build our unit tests.

In mbed-os, we do correctly specify the above condition before adding
the central UNITTEST subdirectory, which fetches googletest and adds the
"stub" libraries the unit tests depend on. However, we only check if
CMAKE_CROSSCOMPILING is OFF (or undefined) before actually adding the
unit tests. This mismatched logic would lead to unexpected build
failures in various scenarios. One likely case could be: a downstream
project including mbed-os happens to set CMAKE_CROSSCOMPILING to
OFF/undefined for any reason (possibly to build its own unit tests).
mbed-os would go ahead and attempt to build its tests without fetching
googletest or adding the required stub targets.

To fix the issue replace the check for CMAKE_CROSSCOMPILING in the unit
tests with the same BUILD_TESTING idiom we use for adding the central
UNITTESTS subdirectory.

CMake: unit-tests: Remove trailing whitespace

Namespace scope mbed:: added for CriticalSectionLock used in Atomic templates

Merge pull request #14441 from OpenNuvoton/nuvoton_m2354_tfm ...

M2354: Support Nuvoton's new target

Merge pull request #14652 from Patater/upgrade-mbedtls-2.25.0 ...

tls: Upgrade to Mbed TLS v2.25.0

Merge pull request #14547 from ARMmbed/remove_unittest_cmake_script ...

CMake: Remove all unittest.cmake script from test suite

CMake: Remove all unittest.cmake script from test suite ...

- Remove redundant cmake script as already added the CMake configuration file
- Remove redundant empty_baseline as it is no longer needed with the help of CMake configuration file

M2354: Support TF-M ...

1.  Configure non-secure target name to NU_M2354 (targets/targets.json). No NU_M2354_NS alias
2.  Following template target, enable image signing and concatenating in post-build process
    (1) Add post-build script (tools/targets).
    (2) Enable TF-M custom build by centralize relevant stuff imported from TF-M (COMPONENT_TFM_S_FW).
3.  Add M2354Code.merge_secure into whitelist of uvision6 (tools/export/uvision/__init__.py).
4.  Add M2354 CMSIS pack database (tools/arm_pack_manager/index.json).
5.  Configure stdio baudrate to 115200 to match TF-M port (platform/mbed_lib.json).
6.  Define CMSIS_NVIC_VIRTUAL to override NVIC_SystemReset with TF-M version (cmsis_nvic_virtual.h).
7.  Override tfm_ns_interface_xxx(...) to enable NS secure call:
    (1) At pre-rtos stage
    (2) In SVC context
8. Implement secure function call with tfm_platform_ioctl(...).
9. Combine stddriver_secure.h/c and hal_secure.h/c into platform_extra_secure.h/c.
10. Fix peripheral base to non-secure (PeripheralNames.h) (TrustZone-unaware since Mbed OS 6.0).
11. Fix NU_PORT_BASE/NU_GET_GPIO_PIN_DATA/NU_SET_GPIO_PIN_DATA to non-secure (PinNamesCommon.h) (TrustZone-unaware since Mbed OS 6.0).
12. NSC convention for StdDriver sys/clk (both TF-M and Mbed must follow)
    (1) SYS_ResetModule
        Usage: Replaced with SYS_ResetModule_S on Mbed OS
        Action: Make it inaccessible from Mbed (neither source nor NSC). Provide SYS_ResetModule_S on Mbed via platform ioctl instead.
    (2) CLK_GetXxx
        Usage: Called in bpwm/i2s/qspi/sc/sdh and system_M2354 on Mbed OS
        Action: Make them inaccessible from Mbed (neither source nor NSC). Re-provide them on Mbed via platform ioctl instead.
13. Remove DISABLE/ENABLE macro definitions in BSP to avoid name conflict with other modules
14. Change to TMR4/5 from TMR2/3 for implementing us_ticker/lp_ticker because TMR2 is used for TF-M NSPE test
15. Support cmake

NOTE: Export(uvision6) doesn't support TF-M target. To enable it for partial compile on Keil, force below function to return true.
      is_target_supported(tools/export/uvision/__init__.py)

Update GCC except.S to support ARMC6 ...

ARM Compiler 6 supports GNU-style assembly with armclang. Instead of
relying on armasm with the legacy syntax, GCC except.S is updated so
that it can be used with ARM as well as GCC_ARM toolchains. CMake is
updated to use this version.

Merge pull request #14426 from ARMmbed/feature_unittest_refactor ...

CMake: Refactor UNITTESTS CMake

psa: Remove outdated macro checks in tests ...

The macros `TARGET_PSA` and `COMPONENT_PSA_SRV_IPC` no longer exist.
The former is replaced by `COMPONENT_PSA` which is also a directory
where the tests are located, so its check can be assumed true.
The latter is not applicable to Mbed OS PSA and can be assumed false.

Note: The entropy_inject test is skipped by default unless a user
manually configures the required `MBEDTLS_ENTROPY_NV_SEED`.

psa: Fix test detection for Mbed CLI 1 ...

A Greentea test is detectable by Mbed CLI 1 only if it's two-levels
deep inside a `TESTS` directory, e.g. `TESTS/foo/bar/main.cpp`. But
several Mbed OS PSA tests are only one-level deep. This commit fixes
the issue by adding an extra level of directory.

psa: Add missing inclusion of crypto_types.h ...

val_client_defs.h includes crypto_values.h, but the latter requires
type definitions from crypto_types.h.

Update Mbed version block

psa: Add PSA_ALG_ECB_NO_PADDING to TF-M v1.0 ...

TF-M v1.0 implements an older version of PSA and does not have the macro
`PSA_ALG_ECB_NO_PADDING` required by
`mbedtls_psa_translate_cipher_mode()` in Mbed TLS v2.25.0. Copy this
macro from Mbed TLS to fix the issue.

psa: Include mbedtls_svc_key_id.h for TF-M ...

We have added definitions that are needed by Mbed TLS's PSK key exchange
but missing from TF-M's PSA to `mbedtls_svc_key_id.h`. To pick up those
definitions, TF-M's `psa/crypto_values.h' needs to include
`mbedtls_svc_key_id.h`.

psa: Add mbedtls_svc_key_id.h ...

In order for Mbed TLS to use the PSA Crypto API, definitions of
`MBEDTLS_SVC_KEY_ID_INIT`, `mbedtls_svc_key_id_t` and
`mbedtls_svc_key_id_is_null()` need to be present but are not provided
by the PSA headers from TF-M.

To solve this issue, this commit copies those definitions from Mbed
TLS's original `psa/crypto_types.h` and `psa/crypto_values.h` into a
separate `mbedtls_svc_key_id.h` for TF-M PSA.

tls: Upgrade to Mbed TLS v2.25.0

Merge pull request #14576 from marcuschangarm/trace_debug_color ...

Trace: Change tr_debug color from gray to bright blue

CMake: Refactor platform unittest CMake ...

- Add CMake configuration file test suites

CMake: Add add_subdirectory of unittests ...

- add every libraries unittest directory into respective CMake
  which allows to include unittest source into build based on
  MBED_BUILD_UNITTESTS flag

Merge pull request #14624 from 0xc0170/fix-14432 ...

error: use __INITIAL_SP from cmsis instead of RTX one

fixup! error: use __INITIAL_SP from cmsis instead of RTX one

Merge pull request #14588 from Patater/mbed-libs-for-m55 ...

Add v8.1-M architecture awareness

Trace: Change tr_debug color from gray to bright blue ...

The gray-on-black color code used for debug level print-out in
mbed_trace is hard to read. Bright-blue-on-black increases the
brightness of the text without over shadowing the info level
default (white-on-black), thus making it easier to read while
maintaining the original intention.

For original color set MBED_TRACE_COLOR_THEME to 1.

error: use __INITIAL_SP from cmsis instead of RTX one ...

We used to require INITIAL_SP as rtx target headers define it. This should not be required, as
cmsis already defines symbol  __INITIAL_SP for all toolchains.

Fixes #14432

Merge pull request #14582 from LDong-Arm/TF-Mv1.3.0_update ...

Update TF-M to v1.3.0

tfm: Add mbedtls_ecc_group_to_psa.h to crypto_extra.h ...

Include mbedtls_ecc_group_to_psa.h from crypto_extra.h so that clients
of PSA within Mbed OS do not need to behave differently depending on
which PSA implementation they are using.

This solution is not ideal as it makes it more difficult to update the
TF-M-provided psa/crypto_extra.h. We'll have to see what other options
we have for including additional headers based on the Mbed OS
configuration.

mbedtls: Add mbedtls_ecc_group_to_psa() ...

We'd like to enable Mbed TLS's PK module in using TF-M's PSA
implementation, even if it doesn't expose the same set of PSA extensions
as Mbed TLS's PSA implementation. To do this, we add
mbedtls_ecc_group_to_psa() in its own header available when using the
latest TF-M.

Add mbedtls_ecc_group_to_psa(), one of Mbed TLS's PSA compatibility
helpers, for internal use by the Mbed TLS PK module. Without this
conversion function, the Mbed TLS PK module is unable to use any PSA
implementation other than one which provides a compatible set of PSA
extensions.

Updated directory platform/FEATURE_EXPERIMENTAL_API/FEATURE_PSA/TARGET_TFM/TARGET_TFM_LATEST