Commit c7913bc8 authored by Michael Büsch's avatar Michael Büsch

b43-ivaldump: Add a tool for dumping initvals files.

Signed-off-by: Michael Büsch's avatarMichael Buesch <mb@bu3sch.de>
parent 949f7aff
......@@ -22,6 +22,7 @@ $(BIN): $(OBJECTS)
install: all
-install -o 0 -g 0 -m 755 $(BIN) $(PREFIX)/bin/
-install -o 0 -g 0 -m 755 b43-ivaldump $(PREFIX)/bin/
clean:
-rm -f *~ *.o *.orig *.rej
......
#!/usr/bin/env python
"""
# A small script to dump the contents of a b43 initvals file
#
# Copyright (C) 2008 Michael Buesch <mb@bu3sch.de>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2
# as published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
"""
import sys
def usage():
print "b43 initvals file dumper"
print ""
print "Copyright (C) 2008 Michael Buesch <mb@bu3sch.de>"
print "Licensed under the GNU/GPL version 2"
print ""
print "Usage: b43-ivaldump FILE"
print ""
print "FILE is the file that is going to be dumped"
print ""
print "The dump will look like this:"
print "XX-bit 0xDEAD -> 0xBEEF"
print "This is an XX-bit write of the value 0xDEAD to register 0xBEEF"
return
if len(sys.argv) != 2:
usage()
sys.exit(1)
filename = sys.argv[1]
try:
ivals = file(filename).read()
except IOError, e:
print "Could not read the initvals file: %s" % e.strerror
sys.exit(1)
if len(ivals) < 8:
print "The file is too small. This can not be an initvals file."
sys.exit(1)
if ivals[0] != "i":
print "This is not an initvals file. (Wrong header magic)."
sys.exit(1)
if ord(ivals[1]) != 1:
print "Initvals file version %d is not supported by this program." % ord(ivals[1])
sys.exit(1)
idx = 8 # skip header
while idx < len(ivals):
off_sz = ord(ivals[idx + 0]) << 8
off_sz |= ord(ivals[idx + 1])
offset = off_sz & 0x7FFF
dword = (off_sz & 0x8000) != 0
if dword:
data = ord(ivals[idx + 2]) << 24
data |= ord(ivals[idx + 3]) << 16
data |= ord(ivals[idx + 4]) << 8
data |= ord(ivals[idx + 5]) << 0
idx += 6
print "32-bit 0x%08X -> 0x%04X" % (data, offset)
else:
data = ord(ivals[idx + 2]) << 8
data |= ord(ivals[idx + 3]) << 0
idx += 4
print "16-bit 0x%04X -> 0x%04X" % (data, offset)
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