[dv] Verify access to Debug Module in debug mode even if disallowed by PMP
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@hcallahan-lowrisc is already working on this.
Since Apr 17, 2025.
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Description
Verify the feature implemented in #2232; specific tasks are:
- [ ] (P1) Minimal smoke test that verifies the feature works (i.e., read, write, and fetch a couple of addresses in the Debug Module address space while debug mode is enabled but the PMP doesn't allow the accesses).
- [ ] (P2) Extensive testing that verifies the feature cannot be used for accesses outside the Debug Module address space that are disallowed by the PMP.
- [ ] (P3) Extensive testing that verifies the feature works (close coverage over all addressing cases cross access types cross relevant states).
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