2 * Copyright (C) 2012 Michael Brown <mbrown@fensystems.co.uk>.
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License as
6 * published by the Free Software Foundation; either version 2 of the
7 * License, or any later version.
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
19 * You can also choose to distribute this program under the terms of
20 * the Unmodified Binary Distribution Licence (as given in the file
21 * COPYING.UBDL), provided that you have satisfied its requirements.
24 FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
28 * VMware backdoor mechanism
30 * Based on the unofficial documentation at
32 * http://sites.google.com/site/chitchatvmback/backdoor
38 #include <ipxe/vmware.h>
41 * Detect VMware presence
43 * @ret rc Return status code
45 int vmware_present ( void ) {
48 uint32_t product_type;
50 /* Perform backdoor call */
51 vmware_cmd_get_version ( &version, &magic, &product_type );
53 /* Check for VMware presence */
54 if ( magic != VMW_MAGIC ) {
55 DBGC ( VMW_MAGIC, "VMware not present\n" );
59 DBGC ( VMW_MAGIC, "VMware product type %04x version %08x detected\n",
60 product_type, version );