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58346759f9
- parameter заменены на localparam, чтоб Vivado не кидал варнинги; - добавлены недостающие пакеты и указания в методичках.
45 lines
1.2 KiB
Systemverilog
45 lines
1.2 KiB
Systemverilog
package riscv_pkg;
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import alu_opcodes_pkg::*;
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export alu_opcodes_pkg::*;
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import csr_pkg::*;
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export csr_pkg::*;
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// opcodes
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localparam LOAD_OPCODE = 5'b00_000;
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localparam MISC_MEM_OPCODE = 5'b00_011;
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localparam OP_IMM_OPCODE = 5'b00_100;
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localparam AUIPC_OPCODE = 5'b00_101;
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localparam STORE_OPCODE = 5'b01_000;
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localparam OP_OPCODE = 5'b01_100;
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localparam LUI_OPCODE = 5'b01_101;
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localparam BRANCH_OPCODE = 5'b11_000;
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localparam JALR_OPCODE = 5'b11_001;
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localparam JAL_OPCODE = 5'b11_011;
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localparam SYSTEM_OPCODE = 5'b11_100;
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// dmem type load store
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localparam LDST_B = 3'b000;
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localparam LDST_H = 3'b001;
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localparam LDST_W = 3'b010;
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localparam LDST_BU = 3'b100;
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localparam LDST_HU = 3'b101;
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// operand a selection
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localparam OP_A_RS1 = 2'b00;
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localparam OP_A_CURR_PC = 2'b01;
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localparam OP_A_ZERO = 2'b10;
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// operand b selection
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localparam OP_B_RS2 = 3'b000;
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localparam OP_B_IMM_I = 3'b001;
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localparam OP_B_IMM_U = 3'b010;
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localparam OP_B_IMM_S = 3'b011;
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localparam OP_B_INCR = 3'b100;
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// writeback source selection
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localparam WB_EX_RESULT = 2'd0;
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localparam WB_LSU_DATA = 2'd1;
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localparam WB_CSR_DATA = 2'd2;
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endpackage
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