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start cleaning rams

This commit is contained in:
Miodrag Milanovic 2024-03-13 18:19:41 +01:00
parent 370517b1e6
commit a5bfb23b47
8 changed files with 101 additions and 27 deletions
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5
techlibs/nanoxplore/Makefile.inc
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@ -3,6 +3,8 @@ OBJS += techlibs/nanoxplore/synth_nanoxplore.o
# Techmap
$(eval $(call add_share_file,share/nanoxplore,techlibs/nanoxplore/arith_map.v))
$(eval $(call add_share_file,share/nanoxplore,techlibs/nanoxplore/brams_map.v))
$(eval $(call add_share_file,share/nanoxplore,techlibs/nanoxplore/brams.txt))
$(eval $(call add_share_file,share/nanoxplore,techlibs/nanoxplore/cells_bb.v))
$(eval $(call add_share_file,share/nanoxplore,techlibs/nanoxplore/cells_bb_l.v))
$(eval $(call add_share_file,share/nanoxplore,techlibs/nanoxplore/cells_bb_m.v))
@ -13,5 +15,6 @@ $(eval $(call add_share_file,share/nanoxplore,techlibs/nanoxplore/cells_wrap.v))
$(eval $(call add_share_file,share/nanoxplore,techlibs/nanoxplore/cells_wrap_l.v))
$(eval $(call add_share_file,share/nanoxplore,techlibs/nanoxplore/cells_wrap_m.v))
$(eval $(call add_share_file,share/nanoxplore,techlibs/nanoxplore/cells_wrap_u.v))
$(eval $(call add_share_file,share/nanoxplore,techlibs/nanoxplore/drams.txt))
$(eval $(call add_share_file,share/nanoxplore,techlibs/nanoxplore/io_map.v))
$(eval $(call add_share_file,share/nanoxplore,techlibs/nanoxplore/rf_rams_map_u.v))
$(eval $(call add_share_file,share/nanoxplore,techlibs/nanoxplore/rf_rams_u.txt))

26
techlibs/nanoxplore/brams.txt Normal file
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@ -0,0 +1,26 @@
ram block $__NX_RAM_ {
abits 13;
widths 1 2 4 9 per_port;
cost 64;
init no_undef;
port srsw "A" "B" {
clock anyedge;
clken;
portoption "WRITEMODE" "NORMAL" {
rdwr no_change;
}
portoption "WRITEMODE" "WRITETHROUGH" {
rdwr new;
}
portoption "WRITEMODE" "READBEFOREWRITE" {
rdwr old;
}
option "RESETMODE" "SYNC" {
rdsrst zero ungated block_wr;
}
option "RESETMODE" "ASYNC" {
rdarst zero;
}
rdinit zero;
}
}

32
techlibs/nanoxplore/brams_map.v Normal file
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@ -0,0 +1,32 @@
module $__NX_RAM_ (...);
parameter INIT = 0;
parameter OPTION_RESETMODE = "SYNC";
parameter PORT_A_WIDTH = 9;
parameter PORT_A_CLK_POL = 1;
parameter PORT_A_OPTION_WRITEMODE = "NORMAL";
input PORT_A_CLK;
input PORT_A_CLK_EN;
input PORT_A_WR_EN;
input PORT_A_RD_SRST;
input PORT_A_RD_ARST;
input [12:0] PORT_A_ADDR;
input [PORT_A_WIDTH-1:0] PORT_A_WR_DATA;
output [PORT_A_WIDTH-1:0] PORT_A_RD_DATA;
parameter PORT_B_WIDTH = 9;
parameter PORT_B_CLK_POL = 1;
parameter PORT_B_OPTION_WRITEMODE = "NORMAL";
input PORT_B_CLK;
input PORT_B_CLK_EN;
input PORT_B_WR_EN;
input PORT_B_RD_SRST;
input PORT_B_RD_ARST;
input [12:0] PORT_B_ADDR;
input [PORT_B_WIDTH-1:0] PORT_B_WR_DATA;
output [PORT_B_WIDTH-1:0] PORT_B_RD_DATA;
endmodule

12
techlibs/nanoxplore/cells_map.v
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@ -70,15 +70,3 @@ module \$_SDFF_NP1_ (input D, C, R, output Q);
wire _TECHMAP_REMOVEINIT_Q_ = 1'b1;
NX_DFF #(.dff_ctxt(1'b0), .dff_edge(1'b1), .dff_init(1'b1), .dff_load(1'b0), .dff_sync(1'b1), .dff_type(1'b1)) _TECHMAP_REPLACE_ (.I(D), .CK(C), .L(1'b0), .R(R), .O(Q));
endmodule
module $__NX_XRFB_64x18_ (input PORT_W_CLK, input [5:0] PORT_W_ADDR, PORT_R_ADDR, input [17:0] PORT_W_WR_DATA, input PORT_W_WR_EN, output [17:0] PORT_R_RD_DATA);
parameter INIT = 1152'bx;
parameter PORT_W_CLK_POL = 1'b1;
NX_XRFB_64x18 #(.mem_ctxt(INIT), .wck_edge(~PORT_W_CLK_POL)) _TECHMAP_REPLACE_ (.WCK(PORT_W_CLK), .I(PORT_W_WR_DATA), .RA(PORT_R_ADDR), .WA(PORT_W_ADDR), .WE(PORT_W_WR_EN), .WEA(1'b1), .O(PORT_R_RD_DATA));
endmodule
module $__NX_XRFB_32x36_ (input PORT_W_CLK, input [4:0] PORT_W_ADDR, PORT_R_ADDR, input [35:0] PORT_W_WR_DATA, input PORT_W_WR_EN, output [35:0] PORT_R_RD_DATA);
parameter INIT = 1152'bx;
parameter PORT_W_CLK_POL = 1'b1;
NX_XRFB_32x36 #(.mem_ctxt(INIT), .wck_edge(~PORT_W_CLK_POL)) _TECHMAP_REPLACE_ (.WCK(PORT_W_CLK), .I(PORT_W_WR_DATA), .RA(PORT_R_ADDR), .WA(PORT_W_ADDR), .WE(PORT_W_WR_EN), .WEA(1'b1), .O(PORT_R_RD_DATA));
endmodule

12
techlibs/nanoxplore/rf_rams_map_u.v Normal file
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@ -0,0 +1,12 @@
module $__NX_XRFB_64x18_ (input PORT_W_CLK, input [5:0] PORT_W_ADDR, PORT_R_ADDR, input [17:0] PORT_W_WR_DATA, input PORT_W_WR_EN, output [17:0] PORT_R_RD_DATA);
parameter INIT = 1152'bx;
parameter PORT_W_CLK_POL = 1'b1;
NX_XRFB_64x18 #(.mem_ctxt(INIT), .wck_edge(~PORT_W_CLK_POL)) _TECHMAP_REPLACE_ (.WCK(PORT_W_CLK), .I(PORT_W_WR_DATA), .RA(PORT_R_ADDR), .WA(PORT_W_ADDR), .WE(PORT_W_WR_EN), .WEA(1'b1), .O(PORT_R_RD_DATA));
endmodule
module $__NX_XRFB_32x36_ (input PORT_W_CLK, input [4:0] PORT_W_ADDR, PORT_R_ADDR, input [35:0] PORT_W_WR_DATA, input PORT_W_WR_EN, output [35:0] PORT_R_RD_DATA);
parameter INIT = 1152'bx;
parameter PORT_W_CLK_POL = 1'b1;
NX_XRFB_32x36 #(.mem_ctxt(INIT), .wck_edge(~PORT_W_CLK_POL)) _TECHMAP_REPLACE_ (.WCK(PORT_W_CLK), .I(PORT_W_WR_DATA), .RA(PORT_R_ADDR), .WA(PORT_W_ADDR), .WE(PORT_W_WR_EN), .WEA(1'b1), .O(PORT_R_RD_DATA));
endmodule

0
techlibs/nanoxplore/drams.txt → techlibs/nanoxplore/rf_rams_u.txt
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37
techlibs/nanoxplore/synth_nanoxplore.cc
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@ -73,11 +73,11 @@ struct SynthNanoXplorePass : public ScriptPass
log(" -nocy\n");
log(" do not map adders to CY cells\n");
log("\n");
log(" -nolutram\n");
log(" do not use LUT RAM cells in output netlist\n");
log(" -norfram\n");
log(" do not use Register File RAM cells in output netlist\n");
log("\n");
log(" -nobram\n");
log(" do not use block RAM cells in output netlist\n");
log(" do not use block NX_RAM cells in output netlist\n");
log("\n");
log(" -nodsp\n");
log(" do not map multipliers to NX_DSP cells\n");
@ -92,8 +92,8 @@ struct SynthNanoXplorePass : public ScriptPass
}
string top_opt, json_file, family;
bool flatten, abc9, nocy, nolutram, nobram, nodsp, iopad;
std::string postfix;
bool flatten, abc9, nocy, norfram, nobram, nodsp, iopad;
std::string postfix, rf_postfix;
void clear_flags() override
{
@ -103,11 +103,12 @@ struct SynthNanoXplorePass : public ScriptPass
flatten = true;
abc9 = false;
nocy = false;
nolutram = false;
norfram = false;
nobram = false;
nodsp = false;
iopad = false;
postfix = "";
rf_postfix = "";
}
void execute(std::vector<std::string> args, RTLIL::Design *design) override
@ -154,8 +155,8 @@ struct SynthNanoXplorePass : public ScriptPass
nocy = true;
continue;
}
if (args[argidx] == "-nolutram") {
nolutram = true;
if (args[argidx] == "-norfram") {
norfram = true;
continue;
}
if (args[argidx] == "-nobram") {
@ -177,17 +178,20 @@ struct SynthNanoXplorePass : public ScriptPass
if (family.empty()) {
//log_warning("NanoXplore family not set, setting it to NG-ULTRA.\n");
family = "ultra";
postfix = "_u";
}
if (family == "ultra") {
postfix = "_u";
rf_postfix = "_u";
} else if (family == "u300") {
postfix = "_u";
rf_postfix = "_u";
} else if (family == "medium") {
postfix = "_m";
rf_postfix = "_l";
} else if (family == "large") {
postfix = "_l";
rf_postfix = "_l";
} else
log_cmd_error("Invalid NanoXplore -family setting: '%s'.\n", family.c_str());
@ -238,9 +242,18 @@ struct SynthNanoXplorePass : public ScriptPass
run("opt_clean");
}
if (!nolutram && check_label("map_lutram", "(skip if -nolutram)")) {
run("memory_libmap -lib +/nanoxplore/drams.txt");
run("techmap -map +/nanoxplore/cells_map.v t:$__NX_XRFB_32x36_ t:$__NX_XRFB_64x18_");
if (check_label("map_ram"))
{
std::string args = "";
if (nobram)
args += " -no-auto-block";
if (norfram)
args += " -no-auto-distributed";
if (help_mode)
args += " [-no-auto-block] [-no-auto-distributed]";
run("memory_libmap -lib +/nanoxplore/rf_rams"+ rf_postfix+ ".txt -lib +/nanoxplore/brams.txt" + args, "(-no-auto-block if -nobram, -no-auto-distributed if -norfram)");
run("techmap -map +/nanoxplore/rf_rams_map"+ rf_postfix+ ".v -map +/nanoxplore/brams_map.v");
run("techmap -map +/nanoxplore/cells_wrap" + postfix + ".v t:NX_XRFB* t:NX_RFB*");
}
if (check_label("map_ffram"))

4
tests/arch/nanoxplore/lutram.ys
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@ -2,7 +2,7 @@ read_verilog ../common/lutram.v
hierarchy -top lutram_1w1r
synth_nanoxplore
cd lutram_1w1r
select -assert-count 1 t:NX_XRFB_64x18
select -assert-count 1 t:NX_RFB_U
select -assert-count 8 t:NX_DFF
select -assert-none t:NX_XRFB_64x18 t:NX_DFF %% t:* %D
select -assert-none t:NX_RFB_U t:NX_DFF %% t:* %D