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#!/usr/bin/env python
# Script to check a bios image and report info on it.
#
# Copyright (C) 2008 Kevin O'Connor <kevin@koconnor.net>
#
# This file may be distributed under the terms of the GNU GPLv3 license.
import sys
import layoutrom
def main():
# Get args
objinfo, rawfile, outfile = sys.argv[1:]
# Read in symbols
objinfofile = open(objinfo, 'rb')
symbols = layoutrom.parseObjDump(objinfofile)[1]
syms = {}
for name, (addr, section) in symbols.items():
syms[name] = addr
# Read in raw file
f = open(rawfile, 'rb')
rawdata = f.read()
f.close()
datasize = len(rawdata)
finalsize = 64*1024
if datasize > 64*1024:
finalsize = 128*1024
# Sanity checks
start = syms['code32flat_start']
end = syms['code32flat_end']
expend = layoutrom.BUILD_BIOS_ADDR + layoutrom.BUILD_BIOS_SIZE
if end != expend:
print "Error! Code does not end at 0x%x (got 0x%x)" % (
expend, end)
sys.exit(1)
if datasize > finalsize:
print "Error! Code is too big (0x%x vs 0x%x)" % (
datasize, finalsize)
sys.exit(1)
expdatasize = end - start
if datasize != expdatasize:
print "Error! Unknown extra data (0x%x vs 0x%x)" % (
datasize, expdatasize)
sys.exit(1)
# Print statistics
print "Total size: %d Free space: %d Percent used: %.1f%% (%dKiB rom)" % (
datasize, finalsize - datasize
, (datasize / float(finalsize)) * 100.0
, finalsize / 1024)
# Write final file
f = open(outfile, 'wb')
f.write(("\0" * (finalsize - datasize)) + rawdata)
f.close()
if __name__ == '__main__':
main()
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