Github_Repos/cvw
1
0
Fork 1
mirror of https://github.com/openhwgroup/cvw synced 2025-02-11 06:05:49 +00:00
Code Issues Packages Projects Releases Wiki Activity

Fixed some of the uncached ifu bugs.

Browse Source
This commit is contained in:
Rose Thompson 2023-12-29 09:53:22 -06:00
parent b701cbf823
commit 482529394a
1 changed files with 7 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
src/ifu/ifu.sv
View File

@ -223,6 +223,7 @@ module ifu import cvw::*; #(parameter cvw_t P) (
// **** must fix words per line vs beats per line as in lsu.
localparam WORDSPERLINE = P.ICACHE_SUPPORTED ? P.ICACHE_LINELENINBITS/P.XLEN : 1;
localparam LOGBWPL = P.ICACHE_SUPPORTED ? $clog2(WORDSPERLINE) : 1;
if(P.ICACHE_SUPPORTED) begin : icache
localparam LINELEN = P.ICACHE_SUPPORTED ? P.ICACHE_LINELENINBITS : P.XLEN;
localparam LLENPOVERAHBW = P.LLEN / P.AHBW; // Number of AHB beats in a LLEN word. AHBW cannot be larger than LLEN. (implementation limitation)
@ -263,7 +264,12 @@ module ifu import cvw::*; #(parameter cvw_t P) (
.BusRW, .Stall(GatedStallD),
.BusStall, .BusCommitted(BusCommittedF));
mux3 #(32) UnCachedDataMux(.d0(ICacheInstrF), .d1(FetchBuffer[32-1:0]), .d2(IROMInstrF),
logic [31:0] ShiftUncachedInstr;
if(P.XLEN == 64) mux4 #(32) UncachedShiftInstrMux(FetchBuffer[32-1:0], FetchBuffer[48-1:16], FetchBuffer[64-1:32], {16'b0, FetchBuffer[64-1:48]},
PCSpillF[2:1], ShiftUncachedInstr);
else mux2 #(32) UncachedShiftInstrMux(FetchBuffer[32-1:0], {16'b0, FetchBuffer[32-1:16]}, PCSpillF[1], ShiftUncachedInstr);
mux3 #(32) UnCachedDataMux(.d0(ICacheInstrF), .d1(ShiftUncachedInstr), .d2(IROMInstrF),
.s({SelIROM, ~CacheableF}), .y(InstrRawF[31:0]));
end else begin : passthrough
assign IFUHADDR = PCPF;