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Added spill support back into the IROM IFU.

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This commit is contained in:
Ross Thompson 2022-01-21 15:50:54 -06:00
parent 4ecc2d029a
commit 4d4d9ac8cf
1 changed files with 5 additions and 5 deletions
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10
pipelined/src/ifu/ifu.sv
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@ -107,7 +107,7 @@ module ifu (
logic [`XLEN+1:0] PCFExt;
logic CacheableF;
logic [11:0] PCNextFMux;
logic [`XLEN-1:0] PCNextFMux;
logic [`XLEN-1:0] PCFMux;
logic SelNextSpill;
logic ICacheFetchLine;
@ -128,7 +128,7 @@ module ifu (
// this exists only if there are compressed instructions.
assign PCFp2 = PCF + `XLEN'b10;
assign PCNextFMux = SelNextSpill ? PCFp2[11:0] : PCNextF[11:0];
assign PCNextFMux = SelNextSpill ? PCFp2 : PCNextF;
assign PCFMux = SelSpill ? PCFp2 : PCF;
assign Spill = &PCF[$clog2(SPILLTHRESHOLD)+1:1];
@ -168,7 +168,7 @@ module ifu (
// end of spill support
end else begin : NoSpillSupport // line: SpillSupport
assign PCNextFMux = PCNextF[11:0];
assign PCNextFMux = PCNextF;
assign PCFMux = PCF;
assign SelNextSpill = 0;
assign PostSpillInstrRawF = InstrRawF;
@ -236,7 +236,7 @@ module ifu (
simpleram #(
.BASE(`RAM_BASE), .RANGE(`RAM_RANGE)) ram (
.HCLK(clk), .HRESETn(~reset),
.HSELRam(1'b1), .HADDR(CPUBusy ? PCPF[31:0] : PCNextF[31:0]), // mux is also inside $, have to replay address if CPU is stalled.
.HSELRam(1'b1), .HADDR(CPUBusy ? PCPF[31:0] : PCNextFMux[31:0]), // mux is also inside $, have to replay address if CPU is stalled.
.HWRITE(1'b0), .HREADY(1'b1),
.HTRANS(2'b10), .HWDATA(0), .HREADRam(FinalInstrRawF_FIXME),
.HRESPRam(), .HREADYRam());
@ -300,7 +300,7 @@ module ifu (
.RW(IFURWF),
.Atomic(2'b00),
.FlushCache(1'b0),
.NextAdr(PCNextFMux),
.NextAdr(PCNextFMux[11:0]),
.PAdr(PCPF),
.CacheCommitted(),
.InvalidateCacheM(InvalidateICacheM));