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Merge branch 'main' of https://github.com/stineje/cvw

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Matthew 2024-06-03 22:25:58 -05:00
commit 0a6e7080dc
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106
src/ieu/ieu.sv
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@ -28,49 +28,49 @@
////////////////////////////////////////////////////////////////////////////////////////////////
module ieu import cvw::*; #(parameter cvw_t P) (
input logic clk, reset,
input logic clk, reset,
// Decode stage signals
input logic [31:0] InstrD, // Instruction
input logic [1:0] STATUS_FS, // is FPU enabled?
input logic [3:0] ENVCFG_CBE, // Cache block operation enables
input logic IllegalIEUFPUInstrD, // Illegal instruction
output logic IllegalBaseInstrD, // Illegal I-type instruction, or illegal RV32 access to upper 16 registers
input logic [31:0] InstrD, // Instruction
input logic [1:0] STATUS_FS, // is FPU enabled?
input logic [3:0] ENVCFG_CBE, // Cache block operation enables
input logic IllegalIEUFPUInstrD, // Illegal instruction
output logic IllegalBaseInstrD, // Illegal I-type instruction, or illegal RV32 access to upper 16 registers
// Execute stage signals
input logic [P.XLEN-1:0] PCE, // PC
input logic [P.XLEN-1:0] PCLinkE, // PC + 4
output logic PCSrcE, // Select next PC (between PC+4 and IEUAdrE)
input logic FWriteIntE, FCvtIntE, // FPU writes to integer register file, FPU converts float to int
output logic [P.XLEN-1:0] IEUAdrE, // Memory address
output logic IntDivE, W64E, // Integer divide, RV64 W-type instruction
output logic [2:0] Funct3E, // Funct3 instruction field
output logic [P.XLEN-1:0] ForwardedSrcAE, ForwardedSrcBE, // ALU src inputs before the mux choosing between them and PCE to put in srcA/B
output logic [4:0] RdE, // Destination register
output logic MDUActiveE, // Mul/Div instruction being executed
output logic [3:0] CMOpM, // 1: cbo.inval; 2: cbo.flush; 4: cbo.clean; 8: cbo.zero
output logic IFUPrefetchE, // instruction prefetch
output logic LSUPrefetchM, // datata prefetch
// Memory stage signals
input logic SquashSCW, // Squash store conditional, from LSU
output logic [1:0] MemRWE, // Read/write control goes to LSU
output logic [1:0] MemRWM, // Read/write control goes to LSU
output logic [1:0] AtomicM, // Atomic control goes to LSU
output logic [P.XLEN-1:0] WriteDataM, // Write data to LSU
output logic [2:0] Funct3M, // Funct3 (size and signedness) to LSU
output logic [P.XLEN-1:0] SrcAM, // ALU SrcA to Privileged unit and FPU
output logic [4:0] RdM, // Destination register
input logic [P.XLEN-1:0] FIntResM, // Integer result from FPU (fmv, fclass, fcmp)
output logic InvalidateICacheM, FlushDCacheM, // Invalidate I$, flush D$
output logic InstrValidD, InstrValidE, InstrValidM, // Instruction is valid
output logic BranchD, BranchE,
output logic JumpD, JumpE,
input logic [P.XLEN-1:0] PCE, // PC
input logic [P.XLEN-1:0] PCLinkE, // PC + 4
output logic PCSrcE, // Select next PC (between PC+4 and IEUAdrE)
input logic FWriteIntE, FCvtIntE, // FPU writes to integer register file, FPU converts float to int
output logic [P.XLEN-1:0] IEUAdrE, // Memory address
output logic IntDivE, W64E, // Integer divide, RV64 W-type instruction
output logic [2:0] Funct3E, // Funct3 instruction field
output logic [P.XLEN-1:0] ForwardedSrcAE, ForwardedSrcBE, // ALU src inputs before the mux choosing between them and PCE to put in srcA/B
output logic [4:0] RdE, // Destination register
output logic MDUActiveE, // Mul/Div instruction being executed
output logic [3:0] CMOpM, // 1: cbo.inval; 2: cbo.flush; 4: cbo.clean; 8: cbo.zero
output logic IFUPrefetchE, // instruction prefetch
output logic LSUPrefetchM, // datata prefetch
// Memory stage signals
input logic SquashSCW, // Squash store conditional, from LSU
output logic [1:0] MemRWE, // Read/write control goes to LSU
output logic [1:0] MemRWM, // Read/write control goes to LSU
output logic [1:0] AtomicM, // Atomic control goes to LSU
output logic [P.XLEN-1:0] WriteDataM, // Write data to LSU
output logic [2:0] Funct3M, // Funct3 (size and signedness) to LSU
output logic [P.XLEN-1:0] SrcAM, // ALU SrcA to Privileged unit and FPU
output logic [4:0] RdM, // Destination register
input logic [P.XLEN-1:0] FIntResM, // Integer result from FPU (fmv, fclass, fcmp)
output logic InvalidateICacheM, FlushDCacheM, // Invalidate I$, flush D$
output logic InstrValidD, InstrValidE, InstrValidM, // Instruction is valid
output logic BranchD, BranchE,
output logic JumpD, JumpE,
// Writeback stage signals
input logic [P.XLEN-1:0] FIntDivResultW, // Integer divide result from FPU fdivsqrt)
input logic [P.XLEN-1:0] CSRReadValW, // CSR read value,
input logic [P.XLEN-1:0] MDUResultW, // multiply/divide unit result
input logic [P.XLEN-1:0] FCvtIntResW, // FPU's float to int conversion result
input logic FCvtIntW, // FPU converts float to int
output logic [4:0] RdW, // Destination register
input logic [P.XLEN-1:0] ReadDataW, // LSU's read data
input logic [P.XLEN-1:0] FIntDivResultW, // Integer divide result from FPU fdivsqrt)
input logic [P.XLEN-1:0] CSRReadValW, // CSR read value,
input logic [P.XLEN-1:0] MDUResultW, // multiply/divide unit result
input logic [P.XLEN-1:0] FCvtIntResW, // FPU's float to int conversion result
input logic FCvtIntW, // FPU converts float to int
output logic [4:0] RdW, // Destination register
input logic [P.XLEN-1:0] ReadDataW, // LSU's read data
// Hazard unit signals
input logic StallD, StallE, StallM, StallW, // Stall signals from hazard unit
input logic FlushD, FlushE, FlushM, FlushW, // Flush signals
@ -93,19 +93,19 @@ module ieu import cvw::*; #(parameter cvw_t P) (
output logic GPRScanOut
);
logic [2:0] ImmSrcD; // Select type of immediate extension
logic [1:0] FlagsE; // Comparison flags ({eq, lt})
logic ALUSrcAE, ALUSrcBE; // ALU source operands
logic [2:0] ResultSrcW; // Selects result in Writeback stage
logic ALUResultSrcE; // Selects ALU result to pass on to Memory stage
logic [2:0] ALUSelectE; // ALU select mux signal
logic SCE; // Store Conditional instruction
logic FWriteIntM; // FPU writing to integer register file
logic IntDivW; // Integer divide instruction
logic [3:0] BSelectE; // Indicates if ZBA_ZBB_ZBC_ZBS instruction in one-hot encoding
logic [3:0] ZBBSelectE; // ZBB Result Select Signal in Execute Stage
logic [2:0] BALUControlE; // ALU Control signals for B instructions in Execute Stage
logic SubArithE; // Subtraction or arithmetic shift
logic [2:0] ImmSrcD; // Select type of immediate extension
logic [1:0] FlagsE; // Comparison flags ({eq, lt})
logic ALUSrcAE, ALUSrcBE; // ALU source operands
logic [2:0] ResultSrcW; // Selects result in Writeback stage
logic ALUResultSrcE; // Selects ALU result to pass on to Memory stage
logic [2:0] ALUSelectE; // ALU select mux signal
logic SCE; // Store Conditional instruction
logic FWriteIntM; // FPU writing to integer register file
logic IntDivW; // Integer divide instruction
logic [3:0] BSelectE; // Indicates if ZBA_ZBB_ZBC_ZBS instruction in one-hot encoding
logic [3:0] ZBBSelectE; // ZBB Result Select Signal in Execute Stage
logic [2:0] BALUControlE; // ALU Control signals for B instructions in Execute Stage
logic SubArithE; // Subtraction or arithmetic shift
logic [6:0] Funct7E;

1
src/privileged/csr.sv
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@ -242,6 +242,7 @@ module csr import cvw::*; #(parameter cvw_t P) (
.MIP_REGW, .MIE_REGW, .WriteMSTATUSM, .WriteMSTATUSHM,
.IllegalCSRMAccessM, .IllegalCSRMWriteReadonlyM,
.MENVCFG_REGW, .DebugCapture, .DebugScanEn, .DebugScanIn, .DebugScanOut);
.MENVCFG_REGW, .DebugCapture, .DebugScanEn, .DebugScanIn, .DebugScanOut);
if (P.S_SUPPORTED) begin:csrs

2
src/privileged/privileged.sv
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@ -154,6 +154,8 @@ module privileged import cvw::*; #(parameter cvw_t P) (
.EPCM, .TrapVectorM,
.CSRReadValW, .IllegalCSRAccessM, .BigEndianM,
.DebugCapture, .DebugScanEn, .DebugScanIn, .DebugScanOut);
.CSRReadValW, .IllegalCSRAccessM, .BigEndianM,
.DebugCapture, .DebugScanEn, .DebugScanIn, .DebugScanOut);
// pipeline early-arriving trap sources
privpiperegs ppr(.clk, .reset, .StallD, .StallE, .StallM, .FlushD, .FlushE, .FlushM,