def write_image_footer(self, new_image, cur_image, config, configkey,
imagenum, base_addr, name):
load_addr = int(config.get(configkey, 'load_addr'), 0)
exec_addr = int(config.get(configkey, 'exec_addr'), 0)
type = int(config.get(configkey, 'type'), 0)
# Prepare the image footer based on the data
# we've stored previously
fi = FirmwareImage()
fi.imagenum = imagenum
fi.base_address = base_addr
fi.load_address = load_addr
fi.exec_address = exec_addr
fi.type = type
fi.name = name
fi.image_checksum = FirmwareImage.computeChecksum(cur_image)
fi.length = len(cur_image)
# Calculate the new checksum..
fi.footer_checksum = fi.computeFooterChecksum()
# flash chip breaks data down into 64KB blocks.
# Footer should be at the end of one of these
curblock = int(math.floor(new_image.tell() / 65536))
curblockend = curblock * 65536
last_image_end = new_image.tell()
# If we don't have space to write the footer
# at the end of the current block, move to the next block
if curblockend - 61 < last_image_end:
curblock += 1
footerpos = (curblock * 65536) - 61
new_image.seek(footerpos)
# And write the footer to the output file
new_image.write(fi.getRawString())
return (footerpos, curblockend)
def write_image_footer(self, new_image, cur_image, config, configkey, imagenum, base_addr, name):
load_addr = int(config.get(configkey, 'load_addr'),0)
exec_addr = int(config.get(configkey, 'exec_addr'),0)
type = int(config.get(configkey, 'type'),0)
# Prepare the image footer based on the data
# we've stored previously
fi = FirmwareImage()
fi.imagenum = imagenum
fi.base_address = base_addr
fi.load_address = load_addr
fi.exec_address = exec_addr
fi.type = type
fi.name = name
fi.image_checksum = FirmwareImage.computeChecksum(cur_image)
fi.length = len(cur_image)
# Calculate the new checksum..
fi.footer_checksum = fi.computeFooterChecksum()
# flash chip breaks data down into 64KB blocks.
# Footer should be at the end of one of these
curblock = int(math.floor(new_image.tell() / 65536))
curblockend = curblock * 65536
last_image_end = new_image.tell()
# If we don't have space to write the footer
# at the end of the current block, move to the next block
if curblockend - 61 < last_image_end:
curblock += 1
footerpos = (curblock * 65536) - 61
new_image.seek(footerpos)
# And write the footer to the output file
new_image.write(fi.getRawString())
return (footerpos, curblockend)
curblock = int(math.floor(new_image.tell() / 65536))
curblockend = curblock * 65536
last_image_end = new_image.tell()
# If we don't have space to write the footer at the end of the current block, move to the next block
if curblockend - 61 < last_image_end:
curblock += 1
footerpos = (curblock * 65536) - 61
new_image.seek(footerpos)
# And write the footer to the output file
new_image.write(fi.getRawString())
footer = FirmwareFooter()
footer.rev1 = int(config.get('global', 'major_version'), 0)
footer.rev2 = int(config.get('global', 'minor_version'), 0)
footer.footerver = int(config.get('global', 'footer_version'), 0)
footer.checksum = footer.computeFooterChecksum(imagecrc)
# Hmm... no documentation on where this should be, but in the firmware I have it's been palced right before the last image footer
# Unsure if that's where it goes, or if it doesn't matter
# 16 includes 8 padding \xFF's between the global footer and the last image footer
global_start = footerpos - 16
if global_start < curblockend:
print "ERROR: Would have written global footer over last image"
print "Aborting"
sys.exit(1)
curblock = int(math.floor(new_image.tell() / 65536))
curblockend = curblock * 65536
last_image_end = new_image.tell()
# If we don't have space to write the footer at the end of the current block, move to the next block
if curblockend - 61 < last_image_end:
curblock += 1
footerpos = (curblock * 65536) - 61
new_image.seek(footerpos)
# And write the footer to the output file
new_image.write(fi.getRawString())
footer = FirmwareFooter()
footer.rev1 = int(config.get('global','major_version'),0)
footer.rev2 = int(config.get('global','minor_version'),0)
footer.footerver = int(config.get('global','footer_version'),0)
footer.checksum = footer.computeFooterChecksum(imagecrc)
# Hmm... no documentation on where this should be, but in the firmware I have it's been palced right before the last image footer
# Unsure if that's where it goes, or if it doesn't matter
# 16 includes 8 padding \xFF's between the global footer and the last image footer
global_start = footerpos-16
if global_start < curblockend:
print "ERROR: Would have written global footer over last image"
print "Aborting"
