From: Michael Buesch <mb@bu3sch.de>
Date: Thu, 19 Jun 2008 22:23:34 +0000 (+0200)
Subject: b43-ivaldump: Add a tool for dumping initvals files.
X-Git-Tag: b43-fwcutter-013~29
X-Git-Url: https://jxself.org/git/?a=commitdiff_plain;h=c7913bc8c60fdd122c4b87b0979b372b39bb8fda;p=b43-tools.git

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

Signed-off-by: Michael Buesch <mb@bu3sch.de>
---

diff --git a/disassembler/Makefile b/disassembler/Makefile
index efb4125..8651626 100644
--- a/disassembler/Makefile
+++ b/disassembler/Makefile
@@ -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
diff --git a/disassembler/b43-ivaldump b/disassembler/b43-ivaldump
new file mode 100755
index 0000000..18164ee
--- /dev/null
+++ b/disassembler/b43-ivaldump
@@ -0,0 +1,78 @@
+#!/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)