🐛 [PMP] rework and fixes #365
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stnolting
added
risc-v compliance
clean-up pmpaddr CSRs
* updated PMP handling and tests * UART tests now run much faster * add mstatus.MPRV + PMP test
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This PR reworks/fixes the processor's physical memory protection (PMP):
mstatus.PMPflag: when set M-mode software uses the privilege frommstatus.MPPfor load/store accesses (to emulate unprivileged accesses)pmp_num_regions_critical_cconfiguration constant; load/store memory access latency is nof affected by the PMP - regardless of the number of implemented PMP regionsTOR(top of region; bound and base concept) andOFFmodes;NAPOTandNA4are not supported (yet)