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Added GreenPAK4 skeleton

This commit is contained in:
Clifford Wolf 2015-09-16 09:28:37 +02:00
parent e7c018e5d1
commit c5352f45c3
4 changed files with 297 additions and 0 deletions
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5
techlibs/greenpak4/Makefile.inc Normal file
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OBJS += techlibs/greenpak4/synth_greenpak4.o
$(eval $(call add_share_file,share/greenpak4,techlibs/greenpak4/cells_map.v))
$(eval $(call add_share_file,share/greenpak4,techlibs/greenpak4/cells_sim.v))

38
techlibs/greenpak4/cells_map.v Normal file
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module \$_DFF_P_ (input D, C, output Q);
DFF _TECHMAP_REPLACE_ (
.D(D),
.Q(Q),
.CLK(C),
.nRSTZ(1'b1),
.nSETZ(1'b1)
);
endmodule
module \$lut (A, Y);
parameter WIDTH = 0;
parameter LUT = 0;
input [WIDTH-1:0] A;
output Y;
generate
if (WIDTH == 1) begin
LUT2 #(.INIT(LUT)) _TECHMAP_REPLACE_ (.OUT(Y),
.IN0(A[0]), .IN1(1'b0));
end else
if (WIDTH == 2) begin
LUT2 #(.INIT(LUT)) _TECHMAP_REPLACE_ (.OUT(Y),
.IN0(A[0]), .IN1(A[1]));
end else
if (WIDTH == 3) begin
LUT3 #(.INIT(LUT)) _TECHMAP_REPLACE_ (.OUT(Y),
.IN0(A[0]), .IN1(A[1]), .IN2(A[2]));
end else
if (WIDTH == 4) begin
LUT4 #(.INIT(LUT)) _TECHMAP_REPLACE_ (.OUT(Y),
.IN0(A[0]), .IN1(A[1]), .IN2(A[2]), .IN3(A[3]));
end else begin
wire _TECHMAP_FAIL_ = 1;
end
endgenerate
endmodule

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techlibs/greenpak4/cells_sim.v Normal file
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module DFF(input D, CLK, nRSTZ, nSETZ, output reg Q);
always @(posedge CLK, negedge nRSTZ, negedge nSETZ) begin
if (!nRSTZ)
Q <= 1'b0;
else if (!nSETZ)
Q <= 1'b1;
else
Q <= D;
end
endmodule
module LUT2(input IN0, IN1, output OUT);
parameter [3:0] INIT = 0;
assign OUT = INIT[{IN1, IN0}];
endmodule
module LUT3(input IN0, IN1, IN2, output OUT);
parameter [7:0] INIT = 0;
assign OUT = INIT[{IN2, IN1, IN0}];
endmodule
module LUT4(input IN0, IN1, IN2, IN3, output OUT);
parameter [15:0] INIT = 0;
assign OUT = INIT[{IN3, IN2, IN1, IN0}];
endmodule

229
techlibs/greenpak4/synth_greenpak4.cc Normal file
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/*
* yosys -- Yosys Open SYnthesis Suite
*
* Copyright (C) 2012 Clifford Wolf <clifford@clifford.at>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
*/
#include "kernel/register.h"
#include "kernel/celltypes.h"
#include "kernel/rtlil.h"
#include "kernel/log.h"
USING_YOSYS_NAMESPACE
PRIVATE_NAMESPACE_BEGIN
bool check_label(bool &active, std::string run_from, std::string run_to, std::string label)
{
if (label == run_from)
active = true;
if (label == run_to)
active = false;
return active;
}
struct SynthIce40Pass : public Pass {
SynthIce40Pass() : Pass("synth_greenpak4", "synthesis for GreenPAK4 FPGAs") { }
virtual void help()
{
// |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
log("\n");
log(" synth_greenpak4 [options]\n");
log("\n");
log("This command runs synthesis for GreenPAK4 FPGAs. This work is experimental.\n");
log("\n");
log(" -top <module>\n");
log(" use the specified module as top module (default='top')\n");
log("\n");
log(" -blif <file>\n");
log(" write the design to the specified BLIF file. writing of an output file\n");
log(" is omitted if this parameter is not specified.\n");
log("\n");
log(" -edif <file>\n");
log(" write the design to the specified edif file. writing of an output file\n");
log(" is omitted if this parameter is not specified.\n");
log("\n");
log(" -run <from_label>:<to_label>\n");
log(" only run the commands between the labels (see below). an empty\n");
log(" from label is synonymous to 'begin', and empty to label is\n");
log(" synonymous to the end of the command list.\n");
log("\n");
log(" -noflatten\n");
log(" do not flatten design before synthesis\n");
log("\n");
log(" -retime\n");
log(" run 'abc' with -dff option\n");
log("\n");
log("\n");
log("The following commands are executed by this synthesis command:\n");
log("\n");
log(" begin:\n");
log(" read_verilog -lib +/greenpak4/cells_sim.v\n");
log(" hierarchy -check -top <top>\n");
log("\n");
log(" flatten: (unless -noflatten)\n");
log(" proc\n");
log(" flatten\n");
log(" tribuf -logic\n");
log("\n");
log(" coarse:\n");
log(" synth -run coarse\n");
log("\n");
log(" fine:\n");
log(" opt -fast -mux_undef -undriven -fine\n");
log(" memory_map\n");
log(" opt -undriven -fine\n");
log(" techmap\n");
log(" abc -dff (only if -retime)\n");
log("\n");
log(" map_luts:\n");
log(" abc -lut 4\n");
log(" clean\n");
log("\n");
log(" map_cells:\n");
log(" techmap -map +/greenpak4/cells_map.v\n");
log(" clean\n");
log("\n");
log(" check:\n");
log(" hierarchy -check\n");
log(" stat\n");
log(" check -noinit\n");
log("\n");
log(" blif:\n");
log(" write_blif -gates -attr -param <file-name>\n");
log("\n");
log(" edif:\n");
log(" write_edif <file-name>\n");
log("\n");
}
virtual void execute(std::vector<std::string> args, RTLIL::Design *design)
{
std::string top_opt = "-auto-top";
std::string run_from, run_to;
std::string blif_file, edif_file;
bool flatten = true;
bool retime = false;
size_t argidx;
for (argidx = 1; argidx < args.size(); argidx++)
{
if (args[argidx] == "-top" && argidx+1 < args.size()) {
top_opt = "-top " + args[++argidx];
continue;
}
if (args[argidx] == "-blif" && argidx+1 < args.size()) {
blif_file = args[++argidx];
continue;
}
if (args[argidx] == "-edif" && argidx+1 < args.size()) {
edif_file = args[++argidx];
continue;
}
if (args[argidx] == "-run" && argidx+1 < args.size()) {
size_t pos = args[argidx+1].find(':');
if (pos == std::string::npos)
break;
run_from = args[++argidx].substr(0, pos);
run_to = args[argidx].substr(pos+1);
continue;
}
if (args[argidx] == "-flatten") {
flatten = true;
continue;
}
if (args[argidx] == "-noflatten") {
flatten = false;
continue;
}
if (args[argidx] == "-retime") {
retime = true;
continue;
}
break;
}
extra_args(args, argidx, design);
if (!design->full_selection())
log_cmd_error("This comannd only operates on fully selected designs!\n");
bool active = run_from.empty();
log_header("Executing SYNTH_GREENPAK4 pass.\n");
log_push();
if (check_label(active, run_from, run_to, "begin"))
{
Pass::call(design, "read_verilog -lib +/greenpak4/cells_sim.v");
Pass::call(design, stringf("hierarchy -check %s", top_opt.c_str()));
}
if (flatten && check_label(active, run_from, run_to, "flatten"))
{
Pass::call(design, "proc");
Pass::call(design, "flatten");
Pass::call(design, "tribuf -logic");
}
if (check_label(active, run_from, run_to, "coarse"))
{
Pass::call(design, "synth -run coarse");
}
if (check_label(active, run_from, run_to, "fine"))
{
Pass::call(design, "opt -fast -mux_undef -undriven -fine");
Pass::call(design, "memory_map");
Pass::call(design, "opt -undriven -fine");
Pass::call(design, "techmap");
if (retime)
Pass::call(design, "abc -dff");
}
if (check_label(active, run_from, run_to, "map_luts"))
{
Pass::call(design, "abc -lut 4");
Pass::call(design, "clean");
}
if (check_label(active, run_from, run_to, "map_cells"))
{
Pass::call(design, "techmap -map +/greenpak4/cells_map.v");
Pass::call(design, "clean");
}
if (check_label(active, run_from, run_to, "check"))
{
Pass::call(design, "hierarchy -check");
Pass::call(design, "stat");
Pass::call(design, "check -noinit");
}
if (check_label(active, run_from, run_to, "blif"))
{
if (!blif_file.empty())
Pass::call(design, stringf("write_blif -gates -attr -param %s", blif_file.c_str()));
}
if (check_label(active, run_from, run_to, "edif"))
{
if (!edif_file.empty())
Pass::call(design, stringf("write_edif %s", edif_file.c_str()));
}
log_pop();
}
} SynthIce40Pass;
PRIVATE_NAMESPACE_END