Add flashrom memory layout detection by FMAP (using fmap_decode)

client/site_tests/factory_EnableWriteProtect/factory_EnableWriteProtect.py

 # -*- coding: utf-8 -*-
 #
 # Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import os
 
 from autotest_lib.client.bin import test, utils
 from autotest_lib.client.common_lib import error
@@ skipping 45 matching lines @@
                         '錯誤: 無法選取快閃記憶體目標 %s' %
                         (conf['name'], conf['name']))
 
             # build layout
             original = self.flashrom.read_whole()
             if not original:
                 raise error.TestError(
                         'Cannot read valid flash rom data.\n' \
                         '無法讀取快閃記憶體資料')
             flashrom_size = len(original)
-            layout = self.flashrom.detect_layout(conf['layout'], flashrom_size)
+            # do not trust current image when detecting layout.
+            layout = self.flashrom.detect_layout(conf['layout'],
+                                                 flashrom_size, None)
             if not layout:
                 raise error.TestError(
                         'Cannot detect flash rom layout.\n' \
                         '無法偵測快閃記憶體配置結構')
 
             # enable write protection
             if self.verbose:
                 print ' - Enable Write Protection for %s' % conf['name']
             if layout.keys().count('ro') != 1:
                 raise error.TestError(
                         "INTERNAL ERROR: Must be 1 RO section\n" \
                         "內部錯誤: 須要單一個唯讀區段")
             if not self.flashrom.enable_write_protect(layout, 'ro'):
                 raise error.TestError(
                         'ERROR: cannot enable write protection.\n' \
                         '錯誤: 無法啟用寫入保護')
 
         # restore default selection.
         if not self.flashrom.select_target(system_default_selection):
             raise error.TestError(
                     'ERROR: cannot restore target.\n' \
                     '錯誤: 無法還原快閃記憶體目標')
         print " - Complete."
 
 
 if __name__ == "__main__":
     print "please run this program with autotest."