- with m.If(fetch_failed):
- # instruction fetch: exception is from MMU
- # reset instr_fault (highest priority)
- sync += pdecode2.ldst_exc.eq(mmu)
- sync += pdecode2.instr_fault.eq(0)
- if flush_needed:
- # request the icache to stop asserting "failed"
- comb += core.icache.flush_in.eq(1)
- with m.Else():
+ if mmu is not None:
+ with m.If(fetch_failed):
+ # instruction fetch: exception is from MMU
+ # reset instr_fault (highest priority)
+ sync += pdecode2.ldst_exc.eq(mmu)
+ sync += pdecode2.instr_fault.eq(0)
+ if flush_needed:
+ # request icache to stop asserting "failed"
+ comb += core.icache.flush_in.eq(1)
+ with m.If(~fetch_failed):