From d53a2bd1d3ae3cfbc9ead0fc12999fe269628179 Mon Sep 17 00:00:00 2001 From: Icenowy Zheng Date: Fri, 14 Dec 2018 16:50:37 +0800 Subject: anlogic: add support for Eagle Distributed RAM The MSLICEs on the Eagle series of FPGA can be configured as Distributed RAM. Enable to synthesis to DRAM. As the Anlogic software suite doesn't support any 'bx to exist in the initializtion data of DRAM, do not enable the initialization support of the inferred DRAM. Signed-off-by: Icenowy Zheng --- techlibs/anlogic/drams_map.v | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) create mode 100644 techlibs/anlogic/drams_map.v (limited to 'techlibs/anlogic/drams_map.v') diff --git a/techlibs/anlogic/drams_map.v b/techlibs/anlogic/drams_map.v new file mode 100644 index 000000000..87cbb6a45 --- /dev/null +++ b/techlibs/anlogic/drams_map.v @@ -0,0 +1,19 @@ +module \$__ANLOGIC_DRAM16X4 (CLK1, A1ADDR, A1DATA, B1ADDR, B1DATA, B1EN); + input CLK1; + + input [3:0] A1ADDR; + output [3:0] A1DATA; + + input [3:0] B1ADDR; + input [3:0] B1DATA; + input B1EN; + + EG_LOGIC_DRAM16X4 _TECHMAP_REPLACE_ ( + .di(B1DATA), + .waddr(B1ADDR), + .wclk(CLK1), + .we(B1EN), + .raddr(A1ADDR), + .do(A1DATA) + ); +endmodule -- cgit v1.2.3 From 90d00182cfe358438d777f2ca7abacb4c6a2733c Mon Sep 17 00:00:00 2001 From: Icenowy Zheng Date: Wed, 19 Dec 2018 10:18:47 +0800 Subject: anlogic: implement DRAM initialization As the TD tool doesn't accept the DRAM cell to contain unknown values in the initial value, the initialzation support of DRAM is previously skipped. Now add the support by add a new pass to determine unknown values in the initial value. Signed-off-by: Icenowy Zheng --- techlibs/anlogic/drams_map.v | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'techlibs/anlogic/drams_map.v') diff --git a/techlibs/anlogic/drams_map.v b/techlibs/anlogic/drams_map.v index 87cbb6a45..084e2a25f 100644 --- a/techlibs/anlogic/drams_map.v +++ b/techlibs/anlogic/drams_map.v @@ -1,4 +1,5 @@ module \$__ANLOGIC_DRAM16X4 (CLK1, A1ADDR, A1DATA, B1ADDR, B1DATA, B1EN); + parameter [63:0]INIT = 64'bx; input CLK1; input [3:0] A1ADDR; @@ -8,7 +9,9 @@ module \$__ANLOGIC_DRAM16X4 (CLK1, A1ADDR, A1DATA, B1ADDR, B1DATA, B1EN); input [3:0] B1DATA; input B1EN; - EG_LOGIC_DRAM16X4 _TECHMAP_REPLACE_ ( + EG_LOGIC_DRAM16X4 #( + `include "dram_init_16x4.vh" + ) _TECHMAP_REPLACE_ ( .di(B1DATA), .waddr(B1ADDR), .wclk(CLK1), -- cgit v1.2.3