Sequencer integration (!607) · Merge requests · OpenHW Group / backup-20241120 / cv32e40x

Created by: silabs-oysteink

Integrating sequencer with pipeline.

Not allowing interrupts to break sequences
Not allowing NMI to break sequences
Not allowing debug to break sequences
Exception will be taken on any operation from WB
Halting of ID stage not allowed if ID stage is in the middle of a sequence (to avoid deadlocks where the core is waiting for a sequence to finish before it can take an interrupt)
Updated logic to halt IF due to single step to account for multiple operations from the sequencer

SEC clean when localparam ZC_EXT = 0 and correct OBI behavior is assumed (no instr_rvalid_i before instr_req_o)

Sequencer integration