42 lines
1.2 KiB
Python
Executable File
42 lines
1.2 KiB
Python
Executable File
#!/usr/bin/env python3
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#
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# This file is part of LiteDRAM.
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#
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# Copyright (c) 2020 Antmicro <www.antmicro.com>
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# SPDX-License-Identifier: BSD-2-Clause
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import random
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import argparse
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def main():
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description = """
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Generate random access pattern for LiteDRAM Pattern Generator/Checker.
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Each address in range [base, base+length) will be accessed only once, but in random order.
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This ensures that no data will be overwritten.
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"""
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parser = argparse.ArgumentParser(description=description)
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parser.add_argument("base", help="Base address")
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parser.add_argument("length", help="Number of (address, data) pairs")
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parser.add_argument("data_width", help="Width of data (used to determine max value)")
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parser.add_argument("--seed", help="Use given random seed (int)")
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args = parser.parse_args()
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if args.seed:
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random.seed(int(args.seed, 0))
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base = int(args.base, 0)
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length = int(args.length, 0)
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data_width = int(args.data_width, 0)
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address = list(range(length))
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random.shuffle(address)
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data = [random.randrange(0, 2**data_width) for _ in range(length)]
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for a, d in zip(address, data):
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print("0x{:08x}, 0x{:08x}".format(a, d))
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if __name__ == "__main__":
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main()
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