// ================================================================== // >>>>>>>>>>>>>>>>>>>>>>> COPYRIGHT NOTICE <<<<<<<<<<<<<<<<<<<<<<<<< // ------------------------------------------------------------------ // Copyright (c) 2006-2011 by Lattice Semiconductor Corporation // ALL RIGHTS RESERVED // ------------------------------------------------------------------ // // IMPORTANT: THIS FILE IS AUTO-GENERATED BY THE LATTICEMICO SYSTEM. // // Permission: // // Lattice Semiconductor grants permission to use this code // pursuant to the terms of the Lattice Semiconductor Corporation // Open Source License Agreement. // // Disclaimer: // // Lattice Semiconductor provides no warranty regarding the use or // functionality of this code. It is the user's responsibility to // verify the user's design for consistency and functionality through // the use of formal verification methods. // // -------------------------------------------------------------------- // // Lattice Semiconductor Corporation // 5555 NE Moore Court // Hillsboro, OR 97214 // U.S.A // // TEL: 1-800-Lattice (USA and Canada) // 503-286-8001 (other locations) // // web: http://www.latticesemi.com/ // email: techsupport@latticesemi.com // // -------------------------------------------------------------------- // FILE DETAILS // Project : LatticeMico32 // File : lm32_top.v // Title : Top-level of CPU. // Dependencies : lm32_include.v // Version : 6.1.17 // : removed SPI - 04/12/07 // Version : 7.0SP2, 3.0 // : No Change // Version : 3.1 // : No Change // ============================================================================= `include "lm32_include.v" ///////////////////////////////////////////////////// // Module interface ///////////////////////////////////////////////////// module lm32_top ( // ----- Inputs ------- clk_i, rst_i, `ifdef CFG_DEBUG_ENABLED `ifdef CFG_ALTERNATE_EBA at_debug, `endif `endif // From external devices `ifdef CFG_INTERRUPTS_ENABLED interrupt, `endif // From user logic `ifdef CFG_USER_ENABLED user_result, user_complete, `endif `ifdef CFG_IWB_ENABLED // Instruction Wishbone master I_DAT_I, I_ACK_I, I_ERR_I, I_RTY_I, `endif `ifdef CFG_EXTERNAL_BREAK_ENABLED ext_break, `endif // Data Wishbone master D_DAT_I, D_ACK_I, D_ERR_I, D_RTY_I, // ----- Outputs ------- `ifdef CFG_USER_ENABLED user_valid, user_opcode, user_operand_0, user_operand_1, `endif `ifdef CFG_IWB_ENABLED // Instruction Wishbone master I_DAT_O, I_ADR_O, I_CYC_O, I_SEL_O, I_STB_O, I_WE_O, I_CTI_O, I_LOCK_O, I_BTE_O, `endif // Data Wishbone master D_DAT_O, D_ADR_O, D_CYC_O, D_SEL_O, D_STB_O, D_WE_O, D_CTI_O, D_LOCK_O, D_BTE_O ); ///////////////////////////////////////////////////// // Inputs ///////////////////////////////////////////////////// input clk_i; // Clock input rst_i; // Reset `ifdef CFG_DEBUG_ENABLED `ifdef CFG_ALTERNATE_EBA input at_debug; // GPIO input that maps EBA to DEBA `endif `endif `ifdef CFG_INTERRUPTS_ENABLED input [`LM32_INTERRUPT_RNG] interrupt; // Interrupt pins `endif `ifdef CFG_USER_ENABLED input [`LM32_WORD_RNG] user_result; // User-defined instruction result input user_complete; // Indicates the user-defined instruction result is valid `endif `ifdef CFG_IWB_ENABLED input [`LM32_WORD_RNG] I_DAT_I; // Instruction Wishbone interface read data input I_ACK_I; // Instruction Wishbone interface acknowledgement input I_ERR_I; // Instruction Wishbone interface error input I_RTY_I; // Instruction Wishbone interface retry `endif input [`LM32_WORD_RNG] D_DAT_I; // Data Wishbone interface read data input D_ACK_I; // Data Wishbone interface acknowledgement input D_ERR_I; // Data Wishbone interface error input D_RTY_I; // Data Wishbone interface retry `ifdef CFG_EXTERNAL_BREAK_ENABLED input ext_break; `endif ///////////////////////////////////////////////////// // Outputs ///////////////////////////////////////////////////// `ifdef CFG_USER_ENABLED output user_valid; // Indicates that user_opcode and user_operand_* are valid wire user_valid; output [`LM32_USER_OPCODE_RNG] user_opcode; // User-defined instruction opcode reg [`LM32_USER_OPCODE_RNG] user_opcode; output [`LM32_WORD_RNG] user_operand_0; // First operand for user-defined instruction wire [`LM32_WORD_RNG] user_operand_0; output [`LM32_WORD_RNG] user_operand_1; // Second operand for user-defined instruction wire [`LM32_WORD_RNG] user_operand_1; `endif `ifdef CFG_IWB_ENABLED output [`LM32_WORD_RNG] I_DAT_O; // Instruction Wishbone interface write data wire [`LM32_WORD_RNG] I_DAT_O; output [`LM32_WORD_RNG] I_ADR_O; // Instruction Wishbone interface address wire [`LM32_WORD_RNG] I_ADR_O; output I_CYC_O; // Instruction Wishbone interface cycle wire I_CYC_O; output [`LM32_BYTE_SELECT_RNG] I_SEL_O; // Instruction Wishbone interface byte select wire [`LM32_BYTE_SELECT_RNG] I_SEL_O; output I_STB_O; // Instruction Wishbone interface strobe wire I_STB_O; output I_WE_O; // Instruction Wishbone interface write enable wire I_WE_O; output [`LM32_CTYPE_RNG] I_CTI_O; // Instruction Wishbone interface cycle type wire [`LM32_CTYPE_RNG] I_CTI_O; output I_LOCK_O; // Instruction Wishbone interface lock bus wire I_LOCK_O; output [`LM32_BTYPE_RNG] I_BTE_O; // Instruction Wishbone interface burst type wire [`LM32_BTYPE_RNG] I_BTE_O; `endif output [`LM32_WORD_RNG] D_DAT_O; // Data Wishbone interface write data wire [`LM32_WORD_RNG] D_DAT_O; output [`LM32_WORD_RNG] D_ADR_O; // Data Wishbone interface address wire [`LM32_WORD_RNG] D_ADR_O; output D_CYC_O; // Data Wishbone interface cycle wire D_CYC_O; output [`LM32_BYTE_SELECT_RNG] D_SEL_O; // Data Wishbone interface byte select wire [`LM32_BYTE_SELECT_RNG] D_SEL_O; output D_STB_O; // Data Wishbone interface strobe wire D_STB_O; output D_WE_O; // Data Wishbone interface write enable wire D_WE_O; output [`LM32_CTYPE_RNG] D_CTI_O; // Data Wishbone interface cycle type wire [`LM32_CTYPE_RNG] D_CTI_O; output D_LOCK_O; // Date Wishbone interface lock bus wire D_LOCK_O; output [`LM32_BTYPE_RNG] D_BTE_O; // Data Wishbone interface burst type wire [`LM32_BTYPE_RNG] D_BTE_O; ///////////////////////////////////////////////////// // Internal nets and registers ///////////////////////////////////////////////////// `ifdef CFG_JTAG_ENABLED // Signals between JTAG interface and CPU wire [`LM32_BYTE_RNG] jtag_reg_d; wire [`LM32_BYTE_RNG] jtag_reg_q; wire jtag_update; wire [2:0] jtag_reg_addr_d; wire [2:0] jtag_reg_addr_q; wire jtck; wire jrstn; `endif // TODO: get the trace signals out `ifdef CFG_TRACE_ENABLED // PC trace signals wire [`LM32_PC_RNG] trace_pc; // PC to trace (address of next non-sequential instruction) wire trace_pc_valid; // Indicates that a new trace PC is valid wire trace_exception; // Indicates an exception has occured wire [`LM32_EID_RNG] trace_eid; // Indicates what type of exception has occured wire trace_eret; // Indicates an eret instruction has been executed `ifdef CFG_DEBUG_ENABLED wire trace_bret; // Indicates a bret instruction has been executed `endif `endif ///////////////////////////////////////////////////// // Functions ///////////////////////////////////////////////////// ///////////////////////////////////////////////////// // Instantiations ///////////////////////////////////////////////////// // LM32 CPU lm32_cpu cpu ( // ----- Inputs ------- .clk_i (clk_i), `ifdef CFG_EBR_NEGEDGE_REGISTER_FILE .clk_n_i (clk_n), `endif .rst_i (rst_i), `ifdef CFG_DEBUG_ENABLED `ifdef CFG_ALTERNATE_EBA .at_debug (at_debug), `endif `endif // From external devices `ifdef CFG_INTERRUPTS_ENABLED .interrupt (interrupt), `endif // From user logic `ifdef CFG_USER_ENABLED .user_result (user_result), .user_complete (user_complete), `endif `ifdef CFG_JTAG_ENABLED // From JTAG .jtag_clk (jtck), .jtag_update (jtag_update), .jtag_reg_q (jtag_reg_q), .jtag_reg_addr_q (jtag_reg_addr_q), `endif `ifdef CFG_EXTERNAL_BREAK_ENABLED .ext_break (ext_break), `endif `ifdef CFG_IWB_ENABLED // Instruction Wishbone master .I_DAT_I (I_DAT_I), .I_ACK_I (I_ACK_I), .I_ERR_I (I_ERR_I), .I_RTY_I (I_RTY_I), `endif // Data Wishbone master .D_DAT_I (D_DAT_I), .D_ACK_I (D_ACK_I), .D_ERR_I (D_ERR_I), .D_RTY_I (D_RTY_I), // ----- Outputs ------- `ifdef CFG_TRACE_ENABLED .trace_pc (trace_pc), .trace_pc_valid (trace_pc_valid), .trace_exception (trace_exception), .trace_eid (trace_eid), .trace_eret (trace_eret), `ifdef CFG_DEBUG_ENABLED .trace_bret (trace_bret), `endif `endif `ifdef CFG_JTAG_ENABLED .jtag_reg_d (jtag_reg_d), .jtag_reg_addr_d (jtag_reg_addr_d), `endif `ifdef CFG_USER_ENABLED .user_valid (user_valid), .user_opcode (user_opcode), .user_operand_0 (user_operand_0), .user_operand_1 (user_operand_1), `endif `ifdef CFG_IWB_ENABLED // Instruction Wishbone master .I_DAT_O (I_DAT_O), .I_ADR_O (I_ADR_O), .I_CYC_O (I_CYC_O), .I_SEL_O (I_SEL_O), .I_STB_O (I_STB_O), .I_WE_O (I_WE_O), .I_CTI_O (I_CTI_O), .I_LOCK_O (I_LOCK_O), .I_BTE_O (I_BTE_O), `endif // Data Wishbone master .D_DAT_O (D_DAT_O), .D_ADR_O (D_ADR_O), .D_CYC_O (D_CYC_O), .D_SEL_O (D_SEL_O), .D_STB_O (D_STB_O), .D_WE_O (D_WE_O), .D_CTI_O (D_CTI_O), .D_LOCK_O (D_LOCK_O), .D_BTE_O (D_BTE_O) ); `ifdef CFG_JTAG_ENABLED // JTAG cores jtag_cores jtag_cores ( // ----- Inputs ----- .reg_d (jtag_reg_d), .reg_addr_d (jtag_reg_addr_d), // ----- Outputs ----- .reg_update (jtag_update), .reg_q (jtag_reg_q), .reg_addr_q (jtag_reg_addr_q), .jtck (jtck), .jrstn (jrstn) ); `endif endmodule