b43: Add support for removing unnecessary firmware files to reduce the image size.

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@14929 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 100 insertions, 0 deletions

diff --git a/package/mac80211/files/host_bin/b43-fwsquash.py b/package/mac80211/files/host_bin/b43-fwsquash.py
new file mode 100755
index 000000000..52484d1b1
--- /dev/null
+++ b/package/mac80211/files/host_bin/b43-fwsquash.py
@@ -0,0 +1,100 @@
+#!/usr/bin/env python
+#
+# b43 firmware file squasher
+# Removes unnecessary firmware files
+#
+# Copyright (c) 2009 Michael Buesch <mb@bu3sch.de>
+#
+# Licensed under the GNU/GPL version 2 or (at your option) any later version.
+#
+
+import sys
+import os
+
+def usage():
+	print "Usage: %s PHYTYPES COREREVS /path/to/extracted/firmware" % sys.argv[0]
+	print ""
+	print "PHYTYPES is a comma separated list of:"
+	print "A         => A-PHY"
+	print "AG        => Dual A-PHY G-PHY"
+	print "G         => G-PHY"
+	print "LP        => LP-PHY"
+	print "N         => N-PHY"
+	print ""
+	print "COREREVS is a comma separated list of core revision numbers."
+
+if len(sys.argv) != 4:
+	usage()
+	sys.exit(1)
+
+phytypes = sys.argv[1]
+corerevs = sys.argv[2]
+fwpath = sys.argv[3]
+
+phytypes = phytypes.split(',')
+try:
+	corerevs = map(lambda r: int(r), corerevs.split(','))
+except ValueError:
+	print "ERROR: \"%s\" is not a valid COREREVS string\n" % corerevs
+	usage()
+	sys.exit(1)
+
+
+fwfiles = os.listdir(fwpath)
+fwfiles = filter(lambda str: str.endswith(".fw"), fwfiles)
+if not fwfiles:
+	print "ERROR: No firmware files found in %s" % fwpath
+	sys.exit(1)
+
+required_fwfiles = []
+
+def revs_match(revs_a, revs_b):
+	for rev in revs_a:
+		if rev in revs_b:
+			return True
+	return False
+
+def phytypes_match(types_a, types_b):
+	for type in types_a:
+		type = type.strip().upper()
+		if type in types_b:
+			return True
+	return False
+
+revmapping = {
+	"ucode5.fw"		: (5,6,7,8,9,10,),
+	"ucode11.fw"		: (11,12,),
+	"ucode13.fw"		: (13,),
+	"pcm4.fw"		: (1,2,3,4,),
+	"pcm5.fw"		: (5,6,7,8,9,10,),
+}
+
+initvalmapping = {
+	"a0g1initvals5.fw"	: ( (5,6,7,8,9,10,),	("AG",), ),
+	"a0g0initvals5.fw"	: ( (5,6,7,8,9,10,),	("A", "AG",), ),
+	"b0g0initvals5.fw"	: ( (5,6,7,8,9,10,),	("G",), ),
+	"b0g0initvals13.fw"	: ( (13,),		("G",), ),
+	"n0initvals11.fw"	: ( (11,12,),		("N",), ),
+	"a0g1bsinitvals5.fw"	: ( (5,6,7,8,9,10,),	("AG",), ),
+	"a0g0bsinitvals5.fw"	: ( (5,6,7,8,9,10,),	("A", "AG"), ),
+	"b0g0bsinitvals5.fw"	: ( (5,6,7,8,9,10,),	("G",), ),
+	"n0bsinitvals11.fw"	: ( (11,12,),		("N",), ),
+}
+
+for f in fwfiles:
+	if f in revmapping:
+		if revs_match(corerevs, revmapping[f]):
+			required_fwfiles += [f]
+		continue
+	if f in initvalmapping:
+		if revs_match(corerevs, initvalmapping[f][0]) and\
+		   phytypes_match(phytypes, initvalmapping[f][1]):
+			required_fwfiles += [f]
+		continue
+	print "WARNING: Firmware file %s not found in the mapping lists" % f
+
+for f in fwfiles:
+	if f not in required_fwfiles:
+		print "Deleting %s" % f
+		os.unlink(fwpath + '/' + f)
+