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Remove MUL DIV config paremeter.

This commit is contained in:
colin.liang 2023-01-12 16:27:05 +08:00
parent af85947a58
commit 9c0d7d7593
2 changed files with 37 additions and 71 deletions
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58
picorv32.v
View File

@ -51,16 +51,10 @@
***************************************************************/
module picorv32 #(
parameter [ 0:0] ENABLE_REGS_16_31 = 1,
parameter [ 0:0] LATCHED_MEM_RDATA = 0,
parameter [ 0:0] TWO_STAGE_SHIFT = 1,
parameter [ 0:0] BARREL_SHIFTER = 0,
parameter [ 0:0] TWO_CYCLE_COMPARE = 0,
parameter [ 0:0] TWO_CYCLE_ALU = 0,
parameter [ 0:0] ENABLE_PCPI = 0,
parameter [ 0:0] ENABLE_MUL = 0,
parameter [ 0:0] ENABLE_FAST_MUL = 0,
parameter [ 0:0] ENABLE_DIV = 0,
parameter [ 0:0] ENABLE_IRQ = 0,
parameter [ 0:0] ENABLE_IRQ_QREGS = 1,
parameter [ 0:0] ENABLE_IRQ_TIMER = 1,
@ -112,11 +106,11 @@ module picorv32 #(
localparam integer irq_ebreak = 1;
localparam integer irq_buserror = 2;
localparam integer irqregs_offset = ENABLE_REGS_16_31 ? 32 : 16;
localparam integer regfile_size = (ENABLE_REGS_16_31 ? 32 : 16) + 4*ENABLE_IRQ*ENABLE_IRQ_QREGS;
localparam integer regindex_bits = (ENABLE_REGS_16_31 ? 5 : 4) + ENABLE_IRQ*ENABLE_IRQ_QREGS;
localparam integer irqregs_offset = 32;
localparam integer regfile_size = 32 + 4*ENABLE_IRQ*ENABLE_IRQ_QREGS;
localparam integer regindex_bits = 5 + ENABLE_IRQ*ENABLE_IRQ_QREGS;
localparam WITH_PCPI = ENABLE_PCPI || ENABLE_MUL || ENABLE_FAST_MUL || ENABLE_DIV;
localparam WITH_PCPI = 1; // AAAA
localparam [35:0] TRACE_BRANCH = {4'b 0001, 32'b 0};
localparam [35:0] TRACE_ADDR = {4'b 0010, 32'b 0};
@ -176,20 +170,7 @@ module picorv32 #(
reg pcpi_int_wait;
reg pcpi_int_ready;
generate if (ENABLE_FAST_MUL) begin
picorv32_pcpi_fast_mul pcpi_mul (
.clk (clk ),
.resetn (resetn ),
.pcpi_valid(pcpi_valid ),
.pcpi_insn (pcpi_insn ),
.pcpi_rs1 (pcpi_rs1 ),
.pcpi_rs2 (pcpi_rs2 ),
.pcpi_wr (pcpi_mul_wr ),
.pcpi_rd (pcpi_mul_rd ),
.pcpi_wait (pcpi_mul_wait ),
.pcpi_ready(pcpi_mul_ready )
);
end else if (ENABLE_MUL) begin
picorv32_pcpi_mul pcpi_mul (
.clk (clk ),
.resetn (resetn ),
@ -202,14 +183,7 @@ module picorv32 #(
.pcpi_wait (pcpi_mul_wait ),
.pcpi_ready(pcpi_mul_ready )
);
end else begin
assign pcpi_mul_wr = 0;
assign pcpi_mul_rd = 32'bx;
assign pcpi_mul_wait = 0;
assign pcpi_mul_ready = 0;
end endgenerate
generate if (ENABLE_DIV) begin
picorv32_pcpi_div pcpi_div (
.clk (clk ),
.resetn (resetn ),
@ -222,30 +196,24 @@ module picorv32 #(
.pcpi_wait (pcpi_div_wait ),
.pcpi_ready(pcpi_div_ready )
);
end else begin
assign pcpi_div_wr = 0;
assign pcpi_div_rd = 32'bx;
assign pcpi_div_wait = 0;
assign pcpi_div_ready = 0;
end endgenerate
always @* begin
pcpi_int_wr = 0;
pcpi_int_rd = 32'bx;
pcpi_int_wait = |{ENABLE_PCPI && pcpi_wait, (ENABLE_MUL || ENABLE_FAST_MUL) && pcpi_mul_wait, ENABLE_DIV && pcpi_div_wait};
pcpi_int_ready = |{ENABLE_PCPI && pcpi_ready, (ENABLE_MUL || ENABLE_FAST_MUL) && pcpi_mul_ready, ENABLE_DIV && pcpi_div_ready};
pcpi_int_wait = |{pcpi_mul_wait, pcpi_div_wait};
pcpi_int_ready = |{pcpi_mul_ready, pcpi_div_ready};
(* parallel_case *)
case (1'b1)
ENABLE_PCPI && pcpi_ready: begin
pcpi_int_wr = ENABLE_PCPI ? pcpi_wr : 0;
pcpi_int_rd = ENABLE_PCPI ? pcpi_rd : 0;
0: begin
pcpi_int_wr = 0;
pcpi_int_rd = 0;
end
(ENABLE_MUL || ENABLE_FAST_MUL) && pcpi_mul_ready: begin
pcpi_mul_ready: begin
pcpi_int_wr = pcpi_mul_wr;
pcpi_int_rd = pcpi_mul_rd;
end
ENABLE_DIV && pcpi_div_ready: begin
pcpi_div_ready: begin
pcpi_int_wr = pcpi_div_wr;
pcpi_int_rd = pcpi_div_rd;
end
@ -281,7 +249,7 @@ module picorv32 #(
assign mem_la_read = resetn && ((!mem_state && (mem_do_rinst || mem_do_prefetch || mem_do_rdata)));
assign mem_la_addr = (mem_do_prefetch || mem_do_rinst) ? {next_pc[31:2], 2'b00} : {reg_op1[31:2], 2'b00};
assign mem_rdata_latched_noshuffle = (mem_xfer || LATCHED_MEM_RDATA) ? mem_rdata : mem_rdata_q;
assign mem_rdata_latched_noshuffle = mem_xfer ? mem_rdata : mem_rdata_q;
assign mem_rdata_latched = mem_rdata_latched_noshuffle;

2
testbench_wb.v
View File

@ -191,8 +191,6 @@ module picorv32_wb #(
assign resetn = ~wb_rst_i;
picorv32 #(
.ENABLE_MUL(1),
.ENABLE_DIV(1),
.ENABLE_IRQ(1),
.ENABLE_TRACE(1),
.MASKED_IRQ(32'h0000_0000),