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Diffstat (limited to 'opencores/aemb/rtl/verilog/aeMB_sim.v')
| -rw-r--r-- | opencores/aemb/rtl/verilog/aeMB_sim.v | 306 |
1 files changed, 306 insertions, 0 deletions
diff --git a/opencores/aemb/rtl/verilog/aeMB_sim.v b/opencores/aemb/rtl/verilog/aeMB_sim.v new file mode 100644 index 000000000..1e70a6317 --- /dev/null +++ b/opencores/aemb/rtl/verilog/aeMB_sim.v @@ -0,0 +1,306 @@ +/* $Id: aeMB_sim.v,v 1.1 2007/12/23 20:40:45 sybreon Exp $ +** +** AEMB EDK 3.2 Compatible Core +** Copyright (C) 2004-2007 Shawn Tan Ser Ngiap <shawn.tan@aeste.net> +** +** This file is part of AEMB. +** +** AEMB is free software: you can redistribute it and/or modify it +** under the terms of the GNU Lesser General Public License as +** published by the Free Software Foundation, either version 3 of the +** License, or (at your option) any later version. +** +** AEMB is distributed in the hope that it will be useful, but WITHOUT +** ANY WARRANTY; without even the implied warranty of MERCHANTABILITY +** or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General +** Public License for more details. +** +** You should have received a copy of the GNU Lesser General Public +** License along with AEMB. If not, see <http://www.gnu.org/licenses/>. +*/ + +module aeMB_sim (/*AUTOARG*/ + // Outputs + iwb_stb_o, iwb_adr_o, fsl_wre_o, fsl_tag_o, fsl_stb_o, fsl_dat_o, + fsl_adr_o, dwb_wre_o, dwb_stb_o, dwb_sel_o, dwb_dat_o, dwb_adr_o, + // Inputs + sys_rst_i, sys_int_i, sys_clk_i, iwb_dat_i, iwb_ack_i, fsl_dat_i, + fsl_ack_i, dwb_dat_i, dwb_ack_i + ); + // Bus widths + parameter IW = 32; /// Instruction bus address width + parameter DW = 32; /// Data bus address width + + // Optional functions + parameter MUL = 1; // Multiplier + parameter BSF = 1; // Barrel Shifter + + /*AUTOOUTPUT*/ + // Beginning of automatic outputs (from unused autoinst outputs) + output [DW-1:2] dwb_adr_o; // From cpu of aeMB_edk32.v + output [31:0] dwb_dat_o; // From cpu of aeMB_edk32.v + output [3:0] dwb_sel_o; // From cpu of aeMB_edk32.v + output dwb_stb_o; // From cpu of aeMB_edk32.v + output dwb_wre_o; // From cpu of aeMB_edk32.v + output [6:2] fsl_adr_o; // From cpu of aeMB_edk32.v + output [31:0] fsl_dat_o; // From cpu of aeMB_edk32.v + output fsl_stb_o; // From cpu of aeMB_edk32.v + output [1:0] fsl_tag_o; // From cpu of aeMB_edk32.v + output fsl_wre_o; // From cpu of aeMB_edk32.v + output [IW-1:2] iwb_adr_o; // From cpu of aeMB_edk32.v + output iwb_stb_o; // From cpu of aeMB_edk32.v + // End of automatics + /*AUTOINPUT*/ + // Beginning of automatic inputs (from unused autoinst inputs) + input dwb_ack_i; // To cpu of aeMB_edk32.v + input [31:0] dwb_dat_i; // To cpu of aeMB_edk32.v + input fsl_ack_i; // To cpu of aeMB_edk32.v + input [31:0] fsl_dat_i; // To cpu of aeMB_edk32.v + input iwb_ack_i; // To cpu of aeMB_edk32.v + input [31:0] iwb_dat_i; // To cpu of aeMB_edk32.v + input sys_clk_i; // To cpu of aeMB_edk32.v + input sys_int_i; // To cpu of aeMB_edk32.v + input sys_rst_i; // To cpu of aeMB_edk32.v + // End of automatics + /*AUTOWIRE*/ + + aeMB_edk32 + #(/*AUTOINSTPARAM*/ + // Parameters + .IW (IW), + .DW (DW), + .MUL (MUL), + .BSF (BSF)) + cpu + (/*AUTOINST*/ + // Outputs + .dwb_adr_o (dwb_adr_o[DW-1:2]), + .dwb_dat_o (dwb_dat_o[31:0]), + .dwb_sel_o (dwb_sel_o[3:0]), + .dwb_stb_o (dwb_stb_o), + .dwb_wre_o (dwb_wre_o), + .fsl_adr_o (fsl_adr_o[6:2]), + .fsl_dat_o (fsl_dat_o[31:0]), + .fsl_stb_o (fsl_stb_o), + .fsl_tag_o (fsl_tag_o[1:0]), + .fsl_wre_o (fsl_wre_o), + .iwb_adr_o (iwb_adr_o[IW-1:2]), + .iwb_stb_o (iwb_stb_o), + // Inputs + .dwb_ack_i (dwb_ack_i), + .dwb_dat_i (dwb_dat_i[31:0]), + .fsl_ack_i (fsl_ack_i), + .fsl_dat_i (fsl_dat_i[31:0]), + .iwb_ack_i (iwb_ack_i), + .iwb_dat_i (iwb_dat_i[31:0]), + .sys_int_i (sys_int_i), + .sys_clk_i (sys_clk_i), + .sys_rst_i (sys_rst_i)); + + // --- SIMULATION KERNEL ---------------------------------- + // synopsys translate_off + + wire [IW-1:0] iwb_adr = {iwb_adr_o, 2'd0}; + wire [DW-1:0] dwb_adr = {dwb_adr_o,2'd0}; + wire [1:0] wBRA = {cpu.rBRA, cpu.rDLY}; + wire [3:0] wMSR = {cpu.xecu.rMSR_BIP, cpu.xecu.rMSR_C, cpu.xecu.rMSR_IE, cpu.xecu.rMSR_BE}; + + always @(posedge cpu.gclk) begin + if (cpu.gena) begin + + $write ("\n", ($stime/10)); + $writeh (" PC=", iwb_adr ); + $writeh ("\t"); + + case (wBRA) + 2'b00: $write(" "); + 2'b01: $write("."); + 2'b10: $write("-"); + 2'b11: $write("+"); + endcase // case (cpu.wBRA) + + case (cpu.rOPC) + 6'o00: if (cpu.rRD == 0) $write(" "); else $write("ADD"); + 6'o01: $write("RSUB"); + 6'o02: $write("ADDC"); + 6'o03: $write("RSUBC"); + 6'o04: $write("ADDK"); + 6'o05: case (cpu.rIMM[1:0]) + 2'o0: $write("RSUBK"); + 2'o1: $write("CMP"); + 2'o3: $write("CMPU"); + default: $write("XXX"); + endcase // case (cpu.rIMM[1:0]) + 6'o06: $write("ADDKC"); + 6'o07: $write("RSUBKC"); + + 6'o10: $write("ADDI"); + 6'o11: $write("RSUBI"); + 6'o12: $write("ADDIC"); + 6'o13: $write("RSUBIC"); + 6'o14: $write("ADDIK"); + 6'o15: $write("RSUBIK"); + 6'o16: $write("ADDIKC"); + 6'o17: $write("RSUBIKC"); + + 6'o20: $write("MUL"); + 6'o21: case (cpu.rALT[10:9]) + 2'o0: $write("BSRL"); + 2'o1: $write("BSRA"); + 2'o2: $write("BSLL"); + default: $write("XXX"); + endcase // case (cpu.rALT[10:9]) + 6'o22: $write("IDIV"); + + 6'o30: $write("MULI"); + 6'o31: case (cpu.rALT[10:9]) + 2'o0: $write("BSRLI"); + 2'o1: $write("BSRAI"); + 2'o2: $write("BSLLI"); + default: $write("XXX"); + endcase // case (cpu.rALT[10:9]) + 6'o33: case (cpu.rRB[4:2]) + 3'o0: $write("GET"); + 3'o4: $write("PUT"); + 3'o2: $write("NGET"); + 3'o6: $write("NPUT"); + 3'o1: $write("CGET"); + 3'o5: $write("CPUT"); + 3'o3: $write("NCGET"); + 3'o7: $write("NCPUT"); + endcase // case (cpu.rRB[4:2]) + + 6'o40: $write("OR"); + 6'o41: $write("AND"); + 6'o42: if (cpu.rRD == 0) $write(" "); else $write("XOR"); + 6'o43: $write("ANDN"); + 6'o44: case (cpu.rIMM[6:5]) + 2'o0: $write("SRA"); + 2'o1: $write("SRC"); + 2'o2: $write("SRL"); + 2'o3: if (cpu.rIMM[0]) $write("SEXT16"); else $write("SEXT8"); + endcase // case (cpu.rIMM[6:5]) + + 6'o45: $write("MOV"); + 6'o46: case (cpu.rRA[3:2]) + 3'o0: $write("BR"); + 3'o1: $write("BRL"); + 3'o2: $write("BRA"); + 3'o3: $write("BRAL"); + endcase // case (cpu.rRA[3:2]) + + 6'o47: case (cpu.rRD[2:0]) + 3'o0: $write("BEQ"); + 3'o1: $write("BNE"); + 3'o2: $write("BLT"); + 3'o3: $write("BLE"); + 3'o4: $write("BGT"); + 3'o5: $write("BGE"); + default: $write("XXX"); + endcase // case (cpu.rRD[2:0]) + + 6'o50: $write("ORI"); + 6'o51: $write("ANDI"); + 6'o52: $write("XORI"); + 6'o53: $write("ANDNI"); + 6'o54: $write("IMMI"); + 6'o55: case (cpu.rRD[1:0]) + 2'o0: $write("RTSD"); + 2'o1: $write("RTID"); + 2'o2: $write("RTBD"); + default: $write("XXX"); + endcase // case (cpu.rRD[1:0]) + 6'o56: case (cpu.rRA[3:2]) + 3'o0: $write("BRI"); + 3'o1: $write("BRLI"); + 3'o2: $write("BRAI"); + 3'o3: $write("BRALI"); + endcase // case (cpu.rRA[3:2]) + 6'o57: case (cpu.rRD[2:0]) + 3'o0: $write("BEQI"); + 3'o1: $write("BNEI"); + 3'o2: $write("BLTI"); + 3'o3: $write("BLEI"); + 3'o4: $write("BGTI"); + 3'o5: $write("BGEI"); + default: $write("XXX"); + endcase // case (cpu.rRD[2:0]) + + 6'o60: $write("LBU"); + 6'o61: $write("LHU"); + 6'o62: $write("LW"); + 6'o64: $write("SB"); + 6'o65: $write("SH"); + 6'o66: $write("SW"); + + 6'o70: $write("LBUI"); + 6'o71: $write("LHUI"); + 6'o72: $write("LWI"); + 6'o74: $write("SBI"); + 6'o75: $write("SHI"); + 6'o76: $write("SWI"); + + default: $write("XXX"); + endcase // case (cpu.rOPC) + + case (cpu.rOPC[3]) + 1'b1: $writeh("\tr",cpu.rRD,", r",cpu.rRA,", h",cpu.rIMM); + 1'b0: $writeh("\tr",cpu.rRD,", r",cpu.rRA,", r",cpu.rRB," "); + endcase // case (cpu.rOPC[3]) + + + // ALU + $write("\t"); + $writeh(" A=",cpu.xecu.rOPA); + $writeh(" B=",cpu.xecu.rOPB); + + case (cpu.rMXALU) + 3'o0: $write(" ADD"); + 3'o1: $write(" LOG"); + 3'o2: $write(" SFT"); + 3'o3: $write(" MOV"); + 3'o4: $write(" MUL"); + 3'o5: $write(" BSF"); + default: $write(" XXX"); + endcase // case (cpu.rMXALU) + $writeh("=h",cpu.xecu.xRESULT); + + // WRITEBACK + $writeh("\tSR=", wMSR," "); + + if (cpu.regf.fRDWE) begin + case (cpu.rMXDST) + 2'o2: begin + if (dwb_stb_o) $writeh("R",cpu.rRW,"=RAM(h",cpu.regf.xWDAT,")"); + if (fsl_stb_o) $writeh("R",cpu.rRW,"=FSL(h",cpu.regf.xWDAT,")"); + end + 2'o1: $writeh("R",cpu.rRW,"=LNK(h",cpu.regf.xWDAT,")"); + 2'o0: $writeh("R",cpu.rRW,"=ALU(h",cpu.regf.xWDAT,")"); + endcase // case (cpu.rMXDST) + end + + // STORE + if (dwb_stb_o & dwb_wre_o) begin + $writeh("RAM(", dwb_adr ,")=", dwb_dat_o); + case (dwb_sel_o) + 4'hF: $write(":L"); + 4'h3,4'hC: $write(":W"); + 4'h1,4'h2,4'h4,4'h8: $write(":B"); + endcase // case (dwb_sel_o) + + end + + end // if (cpu.gena) + + end // always @ (posedge cpu.gclk) + + // synopsys translate_on + +endmodule // aeMB_sim + +/* + $Log: aeMB_sim.v,v $ + Revision 1.1 2007/12/23 20:40:45 sybreon + Abstracted simulation kernel (aeMB_sim) to split simulation models from synthesis models. + + */
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