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GoWin enablement: DRAM, initial BRAM, DRAM init, DRAM sim and synth_gowin flow

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Diego 2019-04-12 23:40:02 -05:00
parent db1a5ec6a2
commit f9272fc56d
10 changed files with 459 additions and 11 deletions
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103
techlibs/gowin/brams_map.v Normal file
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/* Semi Dual Port (SDP) memory have the following configurations:
* Memory Config RAM(BIT) Port Mode Memory Depth Data Depth
* ----------------|---------| ----------|--------------|------------|
* B-SRAM_16K_SD1 16K 16Kx1 16,384 1
* B-SRAM_8K_SD2 16K 8Kx2 8,192 2
* B-SRAM_4K_SD4 16K 4Kx2 4,096 4
*/
module \$__GW1NR_SDP (CLK2, CLK3, A1ADDR, A1DATA, A1EN, B1ADDR, B1DATA, B1EN);
parameter CFG_ABITS = 10;
parameter CFG_DBITS = 16;
parameter CFG_ENABLE_A = 3;
parameter [16383:0] INIT = 16384'hx;
parameter CLKPOL2 = 1;
parameter CLKPOL3 = 1;
input CLK2;
input CLK3;
input [CFG_ABITS-1:0] A1ADDR;
input [CFG_DBITS-1:0] A1DATA;
input [CFG_ENABLE_A-1:0] A1EN;
input [CFG_ABITS-1:0] B1ADDR;
output [CFG_DBITS-1:0] B1DATA;
input B1EN;
generate if (CFG_DBITS == 1) begin
SDP #(
.READ_MODE(0),
.BIT_WIDTH_0(1),
.BIT_WIDTH_1(1),
.BLK_SEL(3'b000),
.RESET_MODE("SYNC")
) _TECHMAP_REPLACE_ (
.CLKA(CLK2), .CLKB(CLK3),
.WREA(A1EN), .OCE(1'b0), .CEA(1'b1),
.WREB(1'b0), .CEB(B1EN),
.RESETA(1'b0), .RESETB(1'b0), .BLKSEL(3'b000),
.DI(A1DATA), .DO(B1DATA), .ADA(A1ADDR), .ADB(B1ADDR)
);
end else if (CFG_DBITS == 2) begin
SDP #(
.READ_MODE(0),
.BIT_WIDTH_0(2),
.BIT_WIDTH_1(2),
.BLK_SEL(3'b000),
.RESET_MODE("SYNC")
) _TECHMAP_REPLACE_ (
.CLKA(CLK2), .CLKB(CLK3),
.WREA(A1EN), .OCE(1'b0), .CEA(1'b1),
.WREB(1'b0), .CEB(B1EN),
.RESETA(1'b0), .RESETB(1'b0), .BLKSEL(3'b000),
.DI(A1DATA), .DO(B1DATA), .ADA(A1ADDR), .ADB(B1ADDR)
);
end else if (CFG_DBITS <= 4) begin
SDP #(
.READ_MODE(0),
.BIT_WIDTH_0(4),
.BIT_WIDTH_1(4),
.BLK_SEL(3'b000),
.RESET_MODE("SYNC")
) _TECHMAP_REPLACE_ (
.CLKA(CLK2), .CLKB(CLK3),
.WREA(A1EN), .OCE(1'b0),
.WREB(1'b0), .CEB(B1EN), .CEA(1'b1),
.RESETA(1'b0), .RESETB(1'b0), .BLKSEL(3'b000),
.DI(A1DATA), .DO(B1DATA), .ADA(A1ADDR), .ADB(B1ADDR)
);
end else if (CFG_DBITS <= 8) begin
SDP #(
.READ_MODE(0),
.BIT_WIDTH_0(8),
.BIT_WIDTH_1(8),
.BLK_SEL(3'b000),
.RESET_MODE("SYNC")
) _TECHMAP_REPLACE_ (
.CLKA(CLK2), .CLKB(CLK3),
.WREA(A1EN), .OCE(1'b0), .CEA(1'b1),
.WREB(1'b0), .CEB(B1EN),
.RESETA(1'b0), .RESETB(1'b0), .BLKSEL(3'b000),
.DI(A1DATA), .DO(B1DATA), .ADA(A1ADDR), .ADB(B1ADDR)
);
end else if (CFG_DBITS <= 16) begin
SDP #(
.READ_MODE(0),
.BIT_WIDTH_0(16),
.BIT_WIDTH_1(16),
.BLK_SEL(3'b000),
.RESET_MODE("SYNC")
) _TECHMAP_REPLACE_ (
.CLKA(CLK2), .CLKB(CLK3),
.WREA(A1EN), .OCE(1'b0),
.WREB(1'b0), .CEB(B1EN), .CEA(1'b1),
.RESETA(1'b0), .RESETB(1'b0), .BLKSEL(3'b000),
.DI(A1DATA), .DO(B1DATA), .ADA(A1ADDR), .ADB(B1ADDR)
);
end else begin
wire TECHMAP_FAIL = 1'b1;
end endgenerate
endmodule