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bramp/ucode.py

Created Oct 13, 2011
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Prints some simple information about ucode firmwares such as those used by Intel Wifi cards
#!/usr/bin/python
# Prints some simple information about ucode firmwares
# such as those used by Intel Wifi cards
#
# Version 1.0 Jan 2011
# by Andrew Brampton
#
# Example
# ./ucode.py /lib/firmware/*.ucode
#
import sys
from struct import unpack
def main(files):
width = 0
for filename in files:
if len(filename) > width: width = len(filename) + 1
for filename in files:
try:
f = open(filename, 'rb')
except IOError:
continue;
header = f.read(4)
print "%s:" % filename.ljust(width),
# New firmeware have zeros, magic, readable, version
if header == '\0\0\0\0':
magic = f.read(4)
if magic != 'IWL\n':
print 'Invalid ucode file'
continue;
readable = ' (' + f.read(64).strip("\n\0") + ')'
header = f.read(4)
else:
readable = ''
serial, api, minor, major = unpack('BBBB', header)
print ("ver %u.%u.%u.%u%s") % (major, minor, api, serial, readable)
if __name__ == "__main__":
if len(sys.argv) <= 1:
print 'Displays information about ucode firmware, such as those used by Intel found in /lib/firmware'
print 'Usage: ucode.py ...'
main(sys.argv[1:])
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