Pirmin Vogel

In #1304 , we discussed that there might be an additional cycle of latency added when entering and interrupt handler in the 2-stage configuration. See https://github.com/lowRISC/ibex/pull/1304#discussion_r594375140 for more details. We...

[XIF] eXtension Interface Review Feedback

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Hi @Silabs-ArjanB , I did review [your updated eXtension interface](https://cv32e40x-user-manual.readthedocs.io/en/latest/x_ext.html). In general, this looks good and I think the main limitation of the [original CVXIF spec](https://github.com/openhwgroup/core-v-xif) on back to back...

Maintaining high capture rates for long captures

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Hi, using the CW-Lite and CW-Husky capture boards in batch mode we get pretty good capture rates of a several hundreds of AES power traces per second. However, when capturing...

This resolves lowRISC/OpenTitan#21511.

[kmac] Change `fifo_empty` interrupt from event to status type

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### Description KMAC-specific issue of https://github.com/lowRISC/opentitan/issues/15378 KMAC has the following interrupts: - kmac_done : signals when the absorption has completed, event seems fine for this. - kmac_err: signals when an...

This resolves #21049. Note that this PR currently contains a cherry-picked commit from @msfschaffner . In addition, some automated TLT sequence needs to be adjusted as well for this PR...

[entropy_src] Outline potential hardware changes for ECDSA sigverify in ROM

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### Description As @h-filali is working his way through the entropy_src hardware changes required for Earlgrey-PROD.M2, we were wondering if there are any hardware changes needed for ECDSA signature verification...

This PR consists of several commits required to improve the masking in the KMAC block and to prevent brute-forcing attacks on the PRNG state. This PR resolves https://github.com/lowRISC/opentitan/issues/20828. The commits...

[topgen] Remove duplicated license headers from autogen files

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A couple of our auto-generated files have duplicated license headers. One copy is inserted by `util/topgen.py` and the other copy comes in via template file. In addition some auto-generated files...

Previously, the interface was also catching the data returned by stores which may be X.