From 67f5f0118fac5b6ea2d4896ebc86d09ff1fee2df Mon Sep 17 00:00:00 2001
From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Date: Fri, 6 Nov 2020 02:33:45 +0200
Subject: Add xml2bin.py

The xml2bin.py tool converts a firmware XML file to the binary format
expected by the AP1302 Linux kernel driver.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
---
 xml2bin.py | 66 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 66 insertions(+)
 create mode 100755 xml2bin.py

diff --git a/xml2bin.py b/xml2bin.py
new file mode 100755
index 0000000..c7e3828
--- /dev/null
+++ b/xml2bin.py
@@ -0,0 +1,66 @@
+#!/usr/bin/python3
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2020 Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+
+import binascii
+import struct
+import sys
+from xml.parsers import expat
+
+
+class Parser(object):
+
+    def __init__(self):
+        self.__parser = expat.ParserCreate()
+        self.__parser.StartElementHandler = self.__startElement
+        self.__parser.EndElementHandler = self.__endElement
+        self.__parser.CharacterDataHandler = self.__characterData
+
+        self.__in_firmware = False
+        self.__attrs = {}
+        self.__data = ''
+
+    def parse(self, filename):
+        f = open(filename, 'rb')
+        self.__parser.ParseFile(f)
+
+    def data(self):
+        return self.__data
+
+    def __getitem__(self, name):
+        return self.__attrs[name]
+
+    def __startElement(self, name, attrs):
+        if name == 'dump':
+            self.__in_firmware = True
+            self.__attrs = attrs
+
+    def __endElement(self, name):
+        if name == 'dump':
+            self.__in_firmware = False
+
+    def __characterData(self, data):
+        if self.__in_firmware:
+            self.__data += data
+
+
+def main(argv):
+    if len(argv) != 3:
+        print(f'Usage: {argv[0]} input.xml output.bin')
+        return 1
+
+    parser = Parser()
+    parser.parse(argv[1])
+
+    fw = parser.data()
+    fw = ''.join([c for c in fw if c in '0123456789abcdefABCDEF'])
+    pll_init_size = int(parser['pll_init_size'])
+    crc = int(parser['crc'], 16)
+
+    out = open(argv[2], 'wb')
+    out.write(struct.pack('<HH', pll_init_size, crc))
+    out.write(binascii.a2b_hex(fw))
+
+
+if __name__ == '__main__':
+    sys.exit(main(sys.argv))
-- 
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