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#!/usr/bin/env python
"""
#   A small script to dump the contents of a brcm80211 initvals section
#
#   Copyright (C) 2010  Michael Buesch <m@bues.ch>
#
#   This program is free software; you can redistribute it and/or modify
#   it under the terms of the GNU General Public License version 2
#   as published by the Free Software Foundation.
#
#   This program is distributed in the hope that it will be useful,
#   but WITHOUT ANY WARRANTY; without even the implied warranty of
#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#   GNU General Public License for more details.
"""

import sys


def usage():
        print "brcm80211 initvals section dumper"
        print "Prints a .initvals assembly section to stdout."
        print ""
        print "Copyright (C) 2010 Michael Buesch <m@bues.ch>"
        print "Licensed under the GNU/GPL version 2"
        print ""
        print "Usage: brcm80211-ivaldump FILE"
        print ""
        print "FILE is the file that is going to be dumped"
        return

if len(sys.argv) != 2:
        usage()
        sys.exit(1)

filename = sys.argv[1]

try:
        ivals = file(filename).read()
except IOError, e:
        print "Could not read the initvals file: %s" % e.strerror
        sys.exit(1)

if len(ivals) == 0 or len(ivals) % 8 != 0:
        print "The input file is malformed."
        sys.exit(1)

sectname = filename.split('/')[-1]
if sectname.endswith(".fw"):
        sectname = sectname[:-3]
print ".initvals(%s)" % sectname
for idx in range(0, len(ivals), 8):
        addr = ord(ivals[idx + 0])
        addr |= ord(ivals[idx + 1]) << 8
        size = ord(ivals[idx + 2])
        size |= ord(ivals[idx + 3]) << 8
        value = ord(ivals[idx + 4])
        value |= ord(ivals[idx + 5]) << 8
        value |= ord(ivals[idx + 6]) << 16
        value |= ord(ivals[idx + 7]) << 24

        if addr == 0xFFFF:
                break
        if size == 4:
                print "\tmmio32\t0x%08X, 0x%04X" % (value, addr)
        elif size == 2:
                if value & 0xFFFF0000:
                        print "The input file is malformed (invalid value for 16bit field)"
                        sys.exit(1)
                print "\tmmio16\t0x%04X, 0x%04X" % (value, addr)
        else:
                print "The input file is malformed (invalid size field: 0x%04X)" % size
                sys.exit(1)