mirror of https://github.com/YosysHQ/icestorm.git
72 lines
2.9 KiB
Python
72 lines
2.9 KiB
Python
#!/usr/bin/env python3
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from fuzzconfig import *
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import numpy as np
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import os
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device_class = os.getenv("ICEDEVICE")
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working_dir = "work_%s_prim" % (device_class, )
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os.system("rm -rf " + working_dir)
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os.mkdir(working_dir)
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w = len(pins) // 4
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for idx in range(num):
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with open(working_dir + "/prim_%02d.v" % idx, "w") as f:
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clkedge = np.random.choice(["pos", "neg"])
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print("module top(input clk, input [%s:0] a, b, output reg x, output reg [%s:0] y);""" % ( w-1, w-1 ), file=f)
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print(" reg [%s:0] aa, bb;""" % ( w-1 ), file=f)
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print(" always @(%sedge clk) aa <= a;" % clkedge, file=f)
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print(" always @(%sedge clk) bb <= b;" % clkedge, file=f)
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if np.random.choice([True, False]):
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print(" always @(%sedge clk) x <= %s%s;" % (clkedge, np.random.choice(["^", "&", "|", "!"]), np.random.choice(["a", "b", "y"])), file=f)
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else:
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print(" always @(%sedge clk) x <= a%sb;" % (clkedge, np.random.choice(["&&", "||"])), file=f)
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if np.random.choice([True, False]):
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print(" always @(%sedge clk) y <= a%sb;" % (clkedge, np.random.choice(["+", "-", "&", "|"])), file=f)
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else:
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print(" always @(%sedge clk) y <= %s%s;" % (clkedge, np.random.choice(["~", "-", ""]), np.random.choice(["a", "b"])), file=f)
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print("endmodule", file=f)
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with open(working_dir + "/prim_%02d.pcf" % idx, "w") as f:
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p = np.random.permutation(pins)
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used_pins = []
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if np.random.choice([True, False]):
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for i in range(w):
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print("set_io a[%d] %s" % (i, p[i]), file=f)
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used_pins.append(p[i])
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if np.random.choice([True, False]):
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for i in range(w):
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print("set_io b[%d] %s" % (i, p[w+i]), file=f)
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used_pins.append(p[w+i])
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if np.random.choice([True, False]):
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for i in range(w):
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print("set_io y[%d] %s" % (i, p[2*w+i]), file=f)
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used_pins.append(p[2*w+i])
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if np.random.choice([True, False]):
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print("set_io x %s" % p[3*w], file=f)
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used_pins.append(p[3*w])
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if np.random.choice([True, False]):
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print("set_io y %s" % p[3*w+1], file=f)
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used_pins.append(p[3*w+1])
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# There is a low but non-zero probability, particularly on devices with
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# fewer pins and GBINs such as the UltraPlus, that a permutation will be
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# picked where all of the GBINs are already constrained at this point,
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# hence icecube fails to assign clk successfully. This is fixed by
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# forcing clock assignment if no GBINs are free.
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global_free = False
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for glbi in gpins:
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if not glbi in used_pins:
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global_free = True
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break
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if np.random.choice([True, False]) or not global_free:
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print("set_io clk %s" % p[3*w+2], file=f)
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output_makefile(working_dir, "prim")
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