Support -i partition:file feature for both read and write.

cli_mfg.c

 /*
  * This file is part of the flashrom project.
  *
  * Copyright (C) 2000 Silicon Integrated System Corporation
  * Copyright (C) 2004 Tyan Corp <yhlu@tyan.com>
  * Copyright (C) 2005-2008 coresystems GmbH
  * Copyright (C) 2008,2009,2010 Carl-Daniel Hailfinger
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ skipping 30 matching lines @@
 {
         const char *pname;
         int pnamelen;
         int remaining = 0;
         enum programmer p;
 
         printf("Usage: %s [-n] [-V] [-f] [-h|-R|-L|"
 #if CONFIG_PRINT_WIKI == 1
                  "-z|"
 #endif
-                 "-E|-r <file>|-w <file>|-v <file>]\n"
+                 "-E|-r <file>|-w <file>|-v <file>] [-i <image>[:<file>]]\n"
                "       [-c <chipname>] [-m [<vendor>:]<part>] [-l <file>]\n"
-               "       [-i <image>] [-p <programmername>[:<parameters>]]\n",
+               "       [-p <programmername>[:<parameters>]]\n",
                name);
 
         printf("Please note that the command line interface for flashrom has "
                  "changed between\n"
                "0.9.1 and 0.9.2 and will change again before flashrom 1.0.\n"
                "Do not use flashrom in scripts or other automated tools "
                  "without checking\n"
                "that your flashrom version won't interpret options in a "
                  "different way.\n\n");
 
@@ skipping 11 matching lines @@
 #if CONFIG_INTERNAL == 1
                /* FIXME: --mainboard should be a programmer parameter */
                "   -m | --mainboard <[vendor:]part>  override mainboard "
                  "detection\n"
 #endif
                "   -f | --force                      force specific operations "
                  "(see man page)\n"
                "   -n | --noverify                   don't auto-verify\n"
                "   -l | --layout <file>              read ROM layout from "
                  "<file>\n"
-               "   -i | --image <name>               only flash image <name> "
-                 "from flash layout\n"
+               "   -i | --image <name>[:<file>]      only access image <name> "
+                 "from flash layout.\n"
+               "                                     the content are included "
+                 "in <file> if specified.\n"
                "   -L | --list-supported             print supported devices\n"
 #if CONFIG_PRINT_WIKI == 1
                "   -z | --list-supported-wiki        print supported devices "
                  "in wiki syntax\n"
 #endif
                "   -p | --programmer <name>[:<param>] specify the programmer "
                  "device"
                  );
 
         for (p = 0; p < PROGRAMMER_INVALID; p++) {
@@ skipping 498 matching lines @@
 
         msg_ginfo("%s\n", rc ? "FAILED" : "SUCCESS");
 cli_mfg_silent_exit:
         programmer_shutdown();  /* must be done after chip_restore() */
 cli_mfg_release_lock_exit:
 #if USE_BIG_LOCK == 1
         release_big_lock();
 #endif
         return rc;
 }