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Added support for initialized xilinx brams

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This commit is contained in:
Clifford Wolf 2015-04-06 17:07:10 +02:00
parent 169d1c4711
commit 8520b7fbe0
11 changed files with 313 additions and 90 deletions
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52
techlibs/xilinx/tests/bram1_tb.v
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@ -8,6 +8,16 @@ module bram1_tb #(
reg [ABITS-1:0] RD_ADDR;
wire [DBITS-1:0] RD_DATA;
localparam [ABITS-1:0] INIT_ADDR_0 = 1234;
localparam [ABITS-1:0] INIT_ADDR_1 = 4321;
localparam [ABITS-1:0] INIT_ADDR_2 = 2**ABITS-1;
localparam [ABITS-1:0] INIT_ADDR_3 = (2**ABITS-1) / 2;
localparam [DBITS-1:0] INIT_DATA_0 = 128'h 51e152a7300e309ccb8cd06d34558f49;
localparam [DBITS-1:0] INIT_DATA_1 = 128'h 07b1fe94a530ddf3027520f9d23ab43e;
localparam [DBITS-1:0] INIT_DATA_2 = 128'h 3cedc6de43ef3f607af3193658d0eb0b;
localparam [DBITS-1:0] INIT_DATA_3 = 128'h f6bc5514a8abf1e2810df966bcc13b46;
bram1 #(
// .ABITS(ABITS),
// .DBITS(DBITS),
@ -68,6 +78,11 @@ module bram1_tb #(
// $dumpfile("testbench.vcd");
// $dumpvars(0, bram1_tb);
memory[INIT_ADDR_0] = INIT_DATA_0;
memory[INIT_ADDR_1] = INIT_DATA_1;
memory[INIT_ADDR_2] = INIT_DATA_2;
memory[INIT_ADDR_3] = INIT_DATA_3;
xorshift64_next;
xorshift64_next;
xorshift64_next;
@ -84,16 +99,33 @@ module bram1_tb #(
clk <= 0;
for (i = 0; i < 512; i = i+1) begin
if (DBITS > 64)
WR_DATA <= (xorshift64_state << (DBITS-64)) ^ xorshift64_state;
else
WR_DATA <= xorshift64_state;
xorshift64_next;
WR_ADDR <= getaddr(i < 256 ? i[7:4] : xorshift64_state[63:60]);
xorshift64_next;
RD_ADDR <= getaddr(i < 256 ? i[3:0] : xorshift64_state[59:56]);
WR_EN <= xorshift64_state[55];
xorshift64_next;
if (i == 0) begin
WR_EN <= 0;
RD_ADDR <= INIT_ADDR_0;
end else
if (i == 1) begin
WR_EN <= 0;
RD_ADDR <= INIT_ADDR_1;
end else
if (i == 2) begin
WR_EN <= 0;
RD_ADDR <= INIT_ADDR_2;
end else
if (i == 3) begin
WR_EN <= 0;
RD_ADDR <= INIT_ADDR_3;
end else begin
if (DBITS > 64)
WR_DATA <= (xorshift64_state << (DBITS-64)) ^ xorshift64_state;
else
WR_DATA <= xorshift64_state;
xorshift64_next;
WR_ADDR <= getaddr(i < 256 ? i[7:4] : xorshift64_state[63:60]);
xorshift64_next;
RD_ADDR <= getaddr(i < 256 ? i[3:0] : xorshift64_state[59:56]);
WR_EN <= xorshift64_state[55];
xorshift64_next;
end
#1; clk <= 1;
#1; clk <= 0;