pkg/driver_cryptocell_310: check for input data to be in RAM #21138
+164
−18
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Contribution description
The nrf CRYPTOCELL peripheral is documented to only support DMA from RAM. In fact, it seems that short data buffers from ROM are also fine (that's why the tests did not catch the bug yet), while larger ones are not.
Let's add an unconditional check for the data to be in RAM following the documentation to be on the safe side.
Testing procedure
examples/psa_crypto
andtests/sys/psa_crypto_*
should still succeed onnrf52840dk
. Tested locally, weekly CI should notice if not.Let's maybe wait with this one after the hard feature freeze @MrKevinWeiss.
Issues/PRs references
Initially noted during ChaCha20 implementation in #20720 (comment), now run into the same problem with hashes.