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AES64 simplification

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This commit is contained in:
David Harris 2024-03-11 00:53:39 -07:00
parent 87ed778763
commit 7d87c4f6c5
2 changed files with 32 additions and 4 deletions
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3
src/ieu/bmu/bitmanipalu.sv
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@ -117,7 +117,8 @@ module bitmanipalu import cvw::*; #(parameter cvw_t P) (
if (P.ZKND_SUPPORTED) aes32d aes32d(.bs(Funct7[6:5]), .rs1(ABMU), .rs2(BBMU), .finalround(ZBBSelect[2]), .result(ZKNDResult));
if (P.ZKNE_SUPPORTED) aes32e aes32e(.bs(Funct7[6:5]), .rs1(ABMU), .rs2(BBMU), .finalround(ZBBSelect[2]), .result(ZKNEResult));
end else
if (P.ZKND_SUPPORTED | P.ZKNE_SUPPORTED) zkn64 ZKND64(.A(ABMU), .B(BBMU), .Funct7, .round(Rs2E[3:0]), .ZKNSelect(ZBBSelect[3:0]), .ZKNDResult, .ZKNEResult); // *** simplify to only one output
if (P.ZKND_SUPPORTED | P.ZKNE_SUPPORTED)
zkn64 #(P) ZKND64(.A(ABMU), .B(BBMU), .Funct7, .round(Rs2E[3:0]), .ZKNSelect(ZBBSelect[3:0]), .ZKNDResult, .ZKNEResult); // *** simplify to only one output
/*
// ZKND Unit

33
src/ieu/kmu/zkn64.sv
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@ -26,7 +26,7 @@
// and limitations under the License.
////////////////////////////////////////////////////////////////////////////////////////////////
module zkn64 (
module zkn64 import cvw::*; #(parameter cvw_t P) (
input logic [63:0] A, B,
input logic [6:0] Funct7,
input logic [3:0] round,
@ -34,6 +34,33 @@ module zkn64 (
output logic [63:0] ZKNDResult, ZKNEResult
);
zknd64 #(64) ZKND64(.A, .B, .Funct7, .round, .ZKNDSelect(ZKNSelect[3:0]), .ZKNDResult); // *** strip out parameter unneded
zkne64 #(64) ZKNE64(.A, .B, .Funct7, .round, .ZKNESelect(ZKNSelect[2:0]), .ZKNEResult);
// zknd64 #(64) ZKND64(.A, .B, .Funct7, .round, .ZKNDSelect(ZKNSelect[3:0]), .ZKNDResult); // *** strip out parameter unneded
// zkne64 #(64) ZKNE64(.A, .B, .Funct7, .round, .ZKNESelect(ZKNSelect[2:0]), .ZKNEResult);
logic [63:0] aes64dRes, aes64eRes, aes64imRes, aes64ks1iRes, aes64ks2Res;
if (P.ZKND_SUPPORTED) // ZKND supports aes64ds, aes64dsm, aes64im
aes64d aes64d(.rs1(A), .rs2(B), .finalround(ZKNSelect[2]), .aes64im(ZKNSelect[3]), .result(aes64dRes)); // decode AES
if (P.ZKNE_SUPPORTED) // ZKNE supports aes64es, aes64esm
aes64e aes64e(.rs1(A), .rs2(B), .finalround(ZKNSelect[2]), .result(aes64eRes));
// Both ZKND and ZKNE support aes64ks1i and aes64ks2 instructions
aes64ks1i aes64ks1i(.round, .rs1(A), .result(aes64ks1iRes));
aes64ks2 aes64ks2(.rs2(B), .rs1(A), .result(aes64ks2Res));
mux3 #(64) zkndmux(aes64dRes, aes64ks1iRes, aes64ks2Res, ZKNSelect[1:0], ZKNDResult);
mux3 #(64) zknemux(aes64eRes, aes64ks1iRes, aes64ks2Res, ZKNSelect[1:0], ZKNEResult);
/*
logic [63:0] aes64eRes, aes64ks1iRes, aes64ks2Res;
// RV64
aes64ks1i aes64ks1i(.round, .rs1(A), .result(aes64ks1iRes));
aes64ks2 aes64ks2(.rs2(B), .rs1(A), .result(aes64ks2Res));
// 010 is a placeholder to match the select of ZKND's AES64KS1I since they share some instruction
mux4 #(WIDTH) zknemux(aes64eRes, aes64dRes, aes64ks1iRes, aes64ks2Res, ZKNESelect[1:0], ZKNEResult);
*/
endmodule