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)
print "Writing 0x%x bytes at 0x%x" % (len(cur_image), new_image.tell())
# Write the actual image contents
new_image.write(cur_image)
# Compute the CRC32 of this image. This is used for the global footer, not for each individual footer
curcrc = zlib.crc32(cur_image) & 0xffffffff
imagecrc.append(curcrc)
# Prepare the image footer based on the data we've stored previously
fi = FirmwareImage()
fi.imagenum = imagenum
fi.base_address = base_addr
fi.exec_address = exec_addr
fi.load_address = load_addr
fi.name = name
fi.image_checksum = FirmwareImage.computeChecksum(cur_image)
fi.type = type
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:
# Write the actual image contents new_image.write(cur_image) # Compute the CRC32 of this image. This is used for the global footer, not for each individual footer curcrc = zlib.crc32(cur_image) & 0xffffffff imagecrc.append(curcrc) # Prepare the image footer based on the data we've stored previously fi = FirmwareImage() fi.imagenum = imagenum fi.base_address = base_addr fi.exec_address = exec_addr fi.load_address = load_addr fi.name = name fi.image_checksum = FirmwareImage.computeChecksum(cur_image) fi.type = type 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:
