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#!/usr/bin/env python
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#!/usr/bin/env python
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"""
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"""
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build_rom.py: Create VHDL package with ROM initialization constant from
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build_rom.py: Create VHDL package with ROM initialization constant from
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Intel-HEX object code file.
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Intel-HEX object code file.
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Please use with --help to get some brief usage instructions.
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"""
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"""
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__author__ = "Jose A. Ruiz"
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__author__ = "Jose A. Ruiz"
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__license__ = "LGPL"
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__license__ = "LGPL"
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print "usage:"
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print "usage:"
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print "python build_rom.py [arguments]\n"
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print "python build_rom.py [arguments]\n"
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print "Builds VHDL ROM constant from template and Intel HEX object file.\n"
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print "Builds VHDL ROM constant from template and Intel HEX object file.\n"
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print "ALL of the following arguments should be given, in any order:"
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print "ALL of the following arguments should be given, in any order:"
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print "{f|file} <filename> Object code file name"
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print "{f|file} <filename> Object code file name"
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print "{c|constant} <name> Name of target VHDL constant"
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print "{p|package} <name> Name of target VHDL package"
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print "{n|name} <name> Name of project (used only in comment)"
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print "{o|output} <filename> Target VHDL file name"
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print ""
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print ""
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print "Additionally, any of these arguments can be given:"
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print "Additionally, any of these arguments can be given:"
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print "{h|help} Show help string and exit"
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print "{c|constant} <name> Name of target VHDL object code constant"
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print "{p|package} <name> Name of target VHDL package"
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print "{n|name} <name> Name of project (used only in comments)"
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print "{o|output} <filename> Target VHDL file name"
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print "{xcode} <number> Size of XCODE memory in bytes"
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print " (defaults to 2048)"
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print "{xdata} <number> Size of XDATA memory in bytes"
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print " (defaults to 0)"
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print "{v|vhdl} <filename> VHDL template"
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print "{v|vhdl} <filename> VHDL template"
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print " (defaults to templates/obj_code_kg_template.vhdl)"
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print " (defaults to templates/obj_code_kg_template.vhdl)"
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print "{i|indent} <number> Indentation in VHDL tables (decimal)"
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print "{i|indent} <number> Indentation in VHDL tables (decimal)"
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print " (defaults to 4)"
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print " (defaults to 4)"
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def help():
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def help():
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"""Print help message a bit longer than usage message."""
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"""Print help message a bit longer than usage message."""
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print "\nPurpose:\n"
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print "\nPurpose:\n"
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print "Reads the code and data binary files and 'slices' them in byte"
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print "Builds initialization package for Light52 MCU core."
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print "columns."
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print "The object code bytes are converted to VHDL strings and then inserted"
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print "The data columns are converted to VHDL strings and then inserted"
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print "into the vhdl template, in place of tag @code_bytes@.\n"
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print "into the vhdl template, in place of tags @code0@ .. @code3@ and "
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print "@data0@ .. @data3@. Column 0 is LSB and column3 is MSB.\n"
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print "Tags like @data31@ and @data20@ etc. can be used to initialize"
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print "memories in 16-bit buses, also split in byte columns.\n"
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print "Template tags are replaced as follows:"
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print "Template tags are replaced as follows:"
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print "@obj_pkg_name@ : Name of package in target vhdl file."
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print "@obj_pkg_name@ : Name of package in target vhdl file."
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print "@const_name@ : Name of constant (VHDL table)."
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print "@const_name@ : Name of object code constant (VHDL table)."
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print "@obj_size@ : Total size of code table in bytes."
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print "@obj_size@ : Total size of code table in bytes."
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print "@project@ : Project name."
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print "@obj_bytes@ : Array of object code bytes."
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print "@project_name@ : Project name."
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print "@xcode_size@ : Size of XCODE memory."
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print "@xcode_size@ : Size of XCODE memory."
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print "@xdata_size@ : Size of XDATA memory."
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print "@xdata_size@ : Size of XDATA memory."
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def parse_hex_line(line):
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def parse_hex_line(line):
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"""Parse code line in HEX object file."""
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"""Parse code line in HEX object file."""
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elif opt in ("--xcode"):
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elif opt in ("--xcode"):
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params['xcode_size'] = int(arg)
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params['xcode_size'] = int(arg)
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elif opt in ("--xdata"):
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elif opt in ("--xdata"):
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params['xdata_size'] = int(arg)
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params['xdata_size'] = int(arg)
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# Ok, now
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# Ok, now read and parse the input Intel HEX object code file.
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if params['hex']:
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if params['hex']:
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(xcode, total_bytes, bottom, top) = read_ihex_file(params['hex']);
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(xcode, total_bytes, bottom, top) = read_ihex_file(params['hex']);
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else:
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else:
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print "Object HEX file name missing.";
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print "Object HEX file name missing.";
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usage()
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usage()
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return 1
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return 1
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# Make sure the object code fits the implemented XCODE space.
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# Make sure the object code fits into the implemented XCODE space.
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# If it doesn't, print a warning and let the user deal with it.
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# If it doesn't, print a warning and let the user deal with it.
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# Assuming that XCODE starts at address zero -- that's how the core works.
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# Assuming that XCODE starts at address zero -- that's how the core works.
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if params['xcode_size'] < top:
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if params['xcode_size'] < top:
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print "\nWARNING: Object code does not fit XCODE space!\n"
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print "\nWARNING: Object code does not fit XCODE space!\n"
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