2 # Script to check a bios image and report info on it.
4 # Copyright (C) 2008 Kevin O'Connor <kevin@koconnor.net>
6 # This file may be distributed under the terms of the GNU GPLv3 license.
13 objinfo, rawfile, outfile = sys.argv[1:]
16 objinfofile = open(objinfo, 'rb')
17 symbols = layoutrom.parseObjDump(objinfofile)[1]
19 for name, (addr, section) in symbols.items():
23 f = open(rawfile, 'rb')
26 datasize = len(rawdata)
28 if datasize > 64*1024:
32 c16e = syms['text16_end'] + 0xf0000
33 f16e = syms['final_text16_end']
35 print "Error! 16bit code moved during linking (0x%x vs 0x%x)" % (
38 if datasize > finalsize:
39 print "Error! Code is too big (0x%x vs 0x%x)" % (
42 actualdatasize = f16e - syms['code32flat_start']
43 if datasize != actualdatasize:
44 print "Error! Unknown extra data (0x%x vs 0x%x)" % (
45 datasize, actualdatasize)
49 sizefree = syms['freespace_end'] - syms['freespace_start']
50 size16 = syms['text16_end'] - syms['data16_start']
51 size32seg = syms['code32seg_end'] - syms['code32seg_start']
52 size32flat = syms['code32flat_end'] - syms['code32flat_start']
53 totalc = size16+size32seg+size32flat
54 print "16bit size: %d" % size16
55 print "32bit segmented size: %d" % size32seg
56 print "32bit flat size: %d" % size32flat
57 print "Total size: %d Free space: %d Percent used: %.1f%% (%dKiB rom)" % (
58 totalc, sizefree + finalsize - datasize
59 , (totalc / float(finalsize)) * 100.0
63 f = open(outfile, 'wb')
64 f.write(("\0" * (finalsize - datasize)) + rawdata)
67 if __name__ == '__main__':