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[BUG] CSR Reads to 0x7C1 do not flagged as Illegal Instruction #179

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emgens opened this issue Dec 12, 2023 · 2 comments · May be fixed by #182
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[BUG] CSR Reads to 0x7C1 do not flagged as Illegal Instruction #179

emgens opened this issue Dec 12, 2023 · 2 comments · May be fixed by #182
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@szbieg

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@emgens
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emgens commented Dec 12, 2023

Bug Description

The cv32e20 core returns a value a of zero and does not flag an illegal instruction when CSR address 0x7C1 is accessed. This was a custom CSR in the IBEX implementation, but the function it controlled (secure seed) is not implemented. The ability to read this address should be removed.
@MikeOpenHWGroup
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Hi @joecircello, I assigned this issue to you because I am not sure of the best individual to assign it to and I'm hoping you do. 😉

@emgens emgens mentioned this issue Dec 13, 2023
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@joecircello joecircello assigned szbieg and unassigned joecircello Dec 19, 2023
@joecircello
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As per the discussion in the 2023-12-19 CV32E20 weekly project meeting, I have reassigned this issue to Szymon.

@szbieg szbieg linked a pull request Jan 15, 2024 that will close this issue
Feature/csrcleanup secureseed #182
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Feature/csrcleanup secureseed NXP/openhwgroup-cve2
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@MikeOpenHWGroup @joecircello @szbieg @emgens