iPXE
vmware.c
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1 /*
2  * Copyright (C) 2012 Michael Brown <mbrown@fensystems.co.uk>.
3  *
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.
8  *
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.
13  *
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
17  * 02110-1301, USA.
18  *
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.
22  */
23 
24 FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
25 
26 /** @file
27  *
28  * VMware backdoor mechanism
29  *
30  * Based on the unofficial documentation at
31  *
32  * http://sites.google.com/site/chitchatvmback/backdoor
33  *
34  */
35 
36 #include <stdint.h>
37 #include <errno.h>
38 #include <ipxe/vmware.h>
39 
40 /**
41  * Detect VMware presence
42  *
43  * @ret rc Return status code
44  */
45 int vmware_present ( void ) {
49 
50  /* Perform backdoor call */
51  vmware_cmd_get_version ( &version, &magic, &product_type );
52 
53  /* Check for VMware presence */
54  if ( magic != VMW_MAGIC ) {
55  DBGC ( VMW_MAGIC, "VMware not present\n" );
56  return -ENOENT;
57  }
58 
59  DBGC ( VMW_MAGIC, "VMware product type %04x version %08x detected\n",
61  return 0;
62 }
Error codes.
#define DBGC(...)
Definition: compiler.h:505
uint32_t magic
Magic signature.
Definition: fdt.h:12
#define ENOENT
No such file or directory.
Definition: errno.h:514
u32 version
Version number.
Definition: ath9k_hw.c:1983
VMware backdoor mechanism.
#define VMW_MAGIC
VMware backdoor magic value.
Definition: vmware.h:18
int vmware_present(void)
Detect VMware presence.
Definition: vmware.c:45
unsigned int uint32_t
Definition: stdint.h:12
static uint32_t uint32_t * product_type
Definition: vmware.h:38
FILE_LICENCE(GPL2_OR_LATER_OR_UBDL)