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Fixed support to allow spills and no icache.

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This commit is contained in:
Ross Thompson 2022-01-12 17:25:16 -06:00
parent 960af4b70f
commit 85b5dc08a8
2 changed files with 242 additions and 237 deletions
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474
pipelined/regression/wave.do
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File diff suppressed because one or more lines are too long

5
pipelined/src/ifu/ifu.sv
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@ -130,7 +130,7 @@ module ifu (
assign PCNextFMux = SelNextSpill ? PCFp2[11:0] : PCNextF[11:0]; assign PCNextFMux = SelNextSpill ? PCFp2[11:0] : PCNextF[11:0];
assign PCFMux = SelSpill ? PCFp2 : PCF; assign PCFMux = SelSpill ? PCFp2 : PCF;
assign Spill = &PCF[$clog2(`ICACHE_LINELENINBITS/32)+1:1]; assign Spill = &PCF[$clog2(SPILLTHRESHOLD)+1:1];
typedef enum {STATE_SPILL_READY, STATE_SPILL_SPILL} statetype; typedef enum {STATE_SPILL_READY, STATE_SPILL_SPILL} statetype;
(* mark_debug = "true" *) statetype CurrState, NextState; (* mark_debug = "true" *) statetype CurrState, NextState;
@ -159,7 +159,7 @@ module ifu (
flopenr #(16) SpillInstrReg(.clk(clk), flopenr #(16) SpillInstrReg(.clk(clk),
.en(SpillSave), .en(SpillSave),
.reset(reset), .reset(reset),
.d(InstrRawF[15:0]), .d(`MEM_ICACHE ? InstrRawF[15:0] : InstrRawF[31:16]),
.q(SpillDataLine0)); .q(SpillDataLine0));
assign PostSpillInstrRawF = Spill ? {InstrRawF[15:0], SpillDataLine0} : InstrRawF; assign PostSpillInstrRawF = Spill ? {InstrRawF[15:0], SpillDataLine0} : InstrRawF;
@ -226,6 +226,7 @@ module ifu (
// 3. wire pass-through // 3. wire pass-through
localparam integer WORDSPERLINE = `MEM_ICACHE ? `ICACHE_LINELENINBITS/`XLEN : 1; localparam integer WORDSPERLINE = `MEM_ICACHE ? `ICACHE_LINELENINBITS/`XLEN : 1;
localparam integer SPILLTHRESHOLD = `MEM_ICACHE ? `ICACHE_LINELENINBITS/32 : 1;
localparam integer LOGWPL = `MEM_ICACHE ? $clog2(WORDSPERLINE) : 1; localparam integer LOGWPL = `MEM_ICACHE ? $clog2(WORDSPERLINE) : 1;
localparam integer LINELEN = `MEM_ICACHE ? `ICACHE_LINELENINBITS : `XLEN; localparam integer LINELEN = `MEM_ICACHE ? `ICACHE_LINELENINBITS : `XLEN;
localparam integer WordCountThreshold = `MEM_ICACHE ? WORDSPERLINE - 1 : 0; localparam integer WordCountThreshold = `MEM_ICACHE ? WORDSPERLINE - 1 : 0;