59 lines
1.5 KiB
C
59 lines
1.5 KiB
C
/*
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* Copyright (C) 2012 Michael Brown <mbrown@fensystems.co.uk>.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*/
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FILE_LICENCE ( GPL2_OR_LATER );
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/** @file
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*
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* VMware backdoor mechanism
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*
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* Based on the unofficial documentation at
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*
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* http://sites.google.com/site/chitchatvmback/backdoor
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*
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*/
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#include <stdint.h>
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#include <errno.h>
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#include <ipxe/vmware.h>
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/**
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* Detect VMware presence
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*
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* @ret rc Return status code
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*/
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int vmware_present ( void ) {
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uint32_t version;
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uint32_t magic;
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uint32_t product_type;
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/* Perform backdoor call */
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vmware_cmd_get_version ( &version, &magic, &product_type );
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/* Check for VMware presence */
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if ( magic != VMW_MAGIC ) {
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DBGC ( VMW_MAGIC, "VMware not present\n" );
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return -ENOENT;
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}
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DBGC ( VMW_MAGIC, "VMware product type %04x version %08x detected\n",
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product_type, version );
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return 0;
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}
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