The first patch for this:
https://review.trustedfirmware.org/c/TF-M/trusted-firmware-m/+/9730

Currently GNU 10-2020-q4-major cannot support CMSE well (https://git.trustedfirmware.org/TF-M/trusted-firmware-m.git/tree/docs/getting_started/tfm_sw_requirement.rst#n54).
So this GNU version won't be supported in TF-M.

I built with

In T911#10554, @davidhuziji wrote:

I will run the GCC version later to check if there are more warnings. Will collect all the warnings and fix them in one shot later.

Would fix after the release. Mark as a long term goal.

Okay, I run into a fault when apply this patch on AN521, may need some investigations :
Running Test Suite Core non-secure interactive tests (TFM_CORE_TEST_2XXX)...

Executing 'TFM_CORE_TEST_2001'

Description: 'Interactive tests'

Segmentation fault

You will need to apply this patch in order for the interactive tests to function as without it the secure part will never build with that part enabled https://review.trustedfirmware.org/c/TF-M/tf-m-tests/+/9431
After applying that and building using:

cmake -DTFM_PLATFORM=lairdconnectivity/bl5340_dvk_cpuapp -GNinja -DTFM_TOOLCHAIN_FILE=../toolchain_GNUARM.cmake -DTEST_S=off -DTEST_NS=on -DCMAKE_BUILD_TYPE=debug -DTFM_INTERACTIVE_TEST=on -DTFM_PERIPH_ACCESS_TEST=ON -DTFM_IRQ_TEST=ON ..

And running it, the first test passes but the freezes at the same point as yours does, it does not continue with the next task

I took a look at this test case, the interactive test suit is disabled by default. Could you append some logs or command on your platform of TFM_CORE_TEST_2001
The test from my side on AN521 will stop after scenario 1:

Executing 'TFM_CORE_TEST_2001'

Description: 'Interactive tests'

Scenario 1 - SequentialTrying to acquire the TFM core from NS [seq_task]NS Lock: acquired [seq_task]Secure call to tfm_spm_core_test_sfn_veneer(&in_vec, 1, NULL, 0) failed, generic!NS Lock: releasing... [seq_task]Scenario 1 - test finished

@oyvind.ronningstad@nordicsemi.no This issue is on the Nordic platform. Can you take a look at it?

Assigned to Ken for the warning fix.

I will run the GCC version later to check if there are more warnings. Will collect all the warnings and fix them in one shot later.

Test results:
FPGA:

Above patch has been abandoned, as it is not important at the current stage.

Verified that it passed the compiling & running tests, with the reverted patch.
Thank you for the quick response/fix~

Apparently, the patch didn't work for GCC. Sorry about that.
It has been reverted for the time being:
https://review.trustedfirmware.org/c/TF-M/tf-m-tests/+/7651

https://review.trustedfirmware.org/c/TF-M/trusted-firmware-m/+/7577

Hello,
Here are 2 commits to introduce the support of external flash for secondary slot
https://review.trustedfirmware.org/c/TF-M/trusted-firmware-m/+/7412
https://review.trustedfirmware.org/c/TF-M/trusted-firmware-m/+/7413

The whole problem has boiled down to a flash write issue and it has been worked around by c32710c7fc8514dd0d072a01549e23a94278ee17.