1# SPDX-License-Identifier: GPL-2.0+ 2# Copyright (c) 2016 Google, Inc 3# Written by Simon Glass <sjg@chromium.org> 4# 5# Entry-type module for Intel Firmware Image Table 6# 7 8import struct 9 10from binman.etype.blob_ext import Entry_blob_ext 11 12class Entry_intel_fit(Entry_blob_ext): 13 """Intel Firmware Image Table (FIT) 14 15 This entry contains a dummy FIT as required by recent Intel CPUs. The FIT 16 contains information about the firmware and microcode available in the 17 image. 18 19 At present binman only supports a basic FIT with no microcode. 20 """ 21 def __init__(self, section, etype, node): 22 super().__init__(section, etype, node) 23 24 def ReadNode(self): 25 """Force 16-byte alignment as required by FIT pointer""" 26 super().ReadNode() 27 self.align = 16 28 29 def ObtainContents(self): 30 data = struct.pack('<8sIHBB', b'_FIT_ ', 1, 0x100, 0x80, 0x7d) 31 self.SetContents(data) 32 return True 33