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#!/usr/bin/env python
import struct
import sys
def do_8_words(ofile, which_ram, row, words):
ofile.write("defparam bootram.RAM%d.INIT_%02X=256'h" % (which_ram, row))
ofile.write("%08x_%08x_%08x_%08x_%08x_%08x_%08x_%08x;\n" % (
words[7], words[6], words[5], words[4], words[3], words[2], words[1], words[0]))
def bin_to_ram_macro_init(bin_input_file, ram_init_output_file):
ifile = open(bin_input_file, 'rb')
ofile = open(ram_init_output_file, 'w')
idata = ifile.read()
idata_words = len(idata) / 4
fmt = ">%dI"%idata_words
words = struct.unpack(fmt, idata[:idata_words*4])
# pad to a multiple of 8 words
r = len(words) % 8
if r != 0:
words += (8 - r) * (0,)
if len(words) > 4096:
sys.stderr.write("bin_to_macro_init: error: input file %s is > 16KiB\n" % (bin_input_file,))
sys.exit(1)
# first 2KB
for i in range(0, min(512, len(words)), 8):
do_8_words(ofile, 0, i/8, words[i:i+8])
# second 2KB
for i in range(512, min(1024, len(words)), 8):
do_8_words(ofile, 1, (i/8) % 64, words[i:i+8])
# third 2KB
for i in range(1024, min(1536, len(words)), 8):
do_8_words(ofile, 2, (i/8) % 64, words[i:i+8])
# last 2KB
for i in range(1536, len(words), 8):
do_8_words(ofile, 3, (i/8) % 64, words[i:i+8])
if __name__ == '__main__':
if len(sys.argv) != 3:
sys.stderr.write("usage: bin_to_ram_macro_init bin_input_file ram_init_output_file\n")
sys.exit(1)
bin_to_ram_macro_init(sys.argv[1], sys.argv[2])
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