binman: Add support for Intel reference code

Some platforms use this instead of FSP to set up the platform, including
memory. Add support for this in binman. This is needed for
chromebook_samus, for example.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

tools/binman/etype/intel_refcode.py

@@ -0,0 +1,27 @@
+# SPDX-License-Identifier: GPL-2.0+
+# Copyright (c) 2016 Google, Inc
+# Written by Simon Glass <sjg@chromium.org>
+#
+# Entry-type module for Intel Memory Reference Code binary blob
+#
+
+from entry import Entry
+from blob import Entry_blob
+
+class Entry_intel_refcode(Entry_blob):
+    """Entry containing an Intel Reference Code file
+
+    Properties / Entry arguments:
+        - filename: Filename of file to read into entry
+
+    This file contains code for setting up the platform on some Intel systems.
+    This is executed by U-Boot when needed early during startup. A typical
+    filename is 'refcode.bin'.
+
+    See README.x86 for information about x86 binary blobs.
+    """
+    def __init__(self, section, etype, node):
+        Entry_blob.__init__(self, section, etype, node)
+
+    def GetDefaultFilename(self):
+        return 'refcode.bin'