scripts: support tags for CFE binaries

CFE loads binaries based on a 12 byte header which corresponds to:
- u32: Load Address
- u32: Entry Address
- u32: Size

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

scripts/cfe-bin-header.py

@@ -0,0 +1,72 @@
+#!/bin/env python3
+
+import argparse
+import os
+import struct
+
+def auto_int(x):
+	return int(x, 0)
+
+def create_header(args, size):
+	header = struct.pack('>III', args.entry_addr, args.load_addr, size)
+	return header
+
+def create_output(args):
+	in_st = os.stat(args.input_file)
+	in_size = in_st.st_size
+
+	header = create_header(args, in_size)
+	print(header)
+
+	in_f = open(args.input_file, 'r+b')
+	in_bytes = in_f.read(in_size)
+	in_f.close()
+
+	out_f = open(args.output_file, 'w+b')
+	out_f.write(header)
+	out_f.write(in_bytes)
+	out_f.close()
+
+def main():
+	global args
+
+	parser = argparse.ArgumentParser(description='')
+
+	parser.add_argument('--entry-addr',
+		dest='entry_addr',
+		action='store',
+		type=auto_int,
+		help='Entry Address')
+
+	parser.add_argument('--input-file',
+		dest='input_file',
+		action='store',
+		type=str,
+		help='Input file')
+
+	parser.add_argument('--load-addr',
+		dest='load_addr',
+		action='store',
+		type=auto_int,
+		help='Load Address')
+
+	parser.add_argument('--output-file',
+		dest='output_file',
+		action='store',
+		type=str,
+		help='Output file')
+
+	args = parser.parse_args()
+
+	if (not args.input_file) or (not args.output_file):
+		parser.print_help()
+
+	if not args.entry_addr:
+		args.entry_addr = 0x80010000
+
+	if not args.load_addr:
+		args.load_addr = 0x80010000
+
+	create_output(args)
+
+main()