From 3a5823a12684a537b2804e37f86cac0cad1436b4 Mon Sep 17 00:00:00 2001 From: Michael Brown Date: Tue, 28 Feb 2012 17:48:46 +0000 Subject: [vmware] Add GuestRPC mechanism Use the VMware backdoor I/O port to access the GuestRPC mechanism. Signed-off-by: Michael Brown --- src/arch/i386/interface/vmware/vmware.c | 57 +++++++++++++++++++++++++++++++++ 1 file changed, 57 insertions(+) create mode 100644 src/arch/i386/interface/vmware/vmware.c (limited to 'src/arch/i386/interface/vmware/vmware.c') diff --git a/src/arch/i386/interface/vmware/vmware.c b/src/arch/i386/interface/vmware/vmware.c new file mode 100644 index 000000000..8cc26c946 --- /dev/null +++ b/src/arch/i386/interface/vmware/vmware.c @@ -0,0 +1,57 @@ +/* + * Copyright (C) 2012 Michael Brown . + * + * 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 the Free Software Foundation; either version 2 of the + * License, or any later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +FILE_LICENCE ( GPL2_OR_LATER ); + +/** @file + * + * VMware backdoor mechanism + * + * Based on the unofficial documentation at + * + * http://sites.google.com/site/chitchatvmback/backdoor + * + */ + +#include +#include +#include + +/** + * Detect VMware presence + * + * @ret rc Return status code + */ +int vmware_present ( void ) { + uint32_t version; + uint32_t magic; + uint32_t product_type; + + /* Perform backdoor call */ + vmware_cmd_get_version ( &version, &magic, &product_type ); + + /* Check for VMware presence */ + if ( magic != VMW_MAGIC ) { + DBGC ( VMW_MAGIC, "VMware not present\n" ); + return -ENOENT; + } + + DBGC ( VMW_MAGIC, "VMware product type %04x version %08x detected\n", + product_type, version ); + return 0; +} -- cgit v1.2.3-55-g7522