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https://github.com/chipsec/chipsec
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CHIPSEC
120 lines
3.6 KiB
Python
120 lines
3.6 KiB
Python
#!/usr/local/bin/python
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#CHIPSEC: Platform Security Assessment Framework
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#Copyright (c) 2010-2015, Intel Corporation
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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
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#as published by the Free Software Foundation; Version 2.
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#
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#This program is distributed in the hope that it will be useful,
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#but WITHOUT ANY WARRANTY; without even the implied warranty of
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#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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#GNU 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 02110-1301, USA.
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#
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#Contact information:
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#chipsec@intel.com
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#
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__version__ = '1.0'
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import os
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import sys
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import time
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import chipsec_util
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from chipsec.logger import *
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from chipsec.file import *
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from chipsec.hal.smbus import *
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from chipsec.hal.spd import *
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def spd(argv):
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"""
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>>> chipsec_util spd detect
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>>> chipsec_util spd dump [device_addr]
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>>> chipsec_util spd read <device_addr> <offset>
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>>> chipsec_util spd write <device_addr> <offset> <byte_val>
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Examples:
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>>> chipsec_util spd detect
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>>> chipsec_util spd dump DIMM0
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>>> chipsec_util spd read 0xA0 0x0
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>>> chipsec_util spd write 0xA0 0x0 0xAA
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"""
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if 3 > len(argv):
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print spd.__doc__
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return
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try:
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_smbus = SMBus( chipsec_util._cs )
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_spd = SPD( _smbus )
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except BaseException, msg:
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print msg
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return
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op = argv[2]
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t = time.time()
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if not _smbus.is_SMBus_supported():
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logger().log( "[CHIPSEC] SMBus controller is not supported" )
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return
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#smbus.display_SMBus_info()
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dev_addr = SPD_SMBUS_ADDRESS
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if( 'detect' == op ):
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logger().log( "[CHIPSEC] Searching for DIMMs with SPD.." )
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_spd.detect()
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elif( 'dump' == op ):
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if len(argv) > 3:
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dev = argv[3].upper()
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dev_addr = chipsec.hal.spd.SPD_DIMM_ADDRESSES[ dev ] if dev in chipsec.hal.spd.SPD_DIMM_ADDRESSES else int(argv[3],16)
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if not _spd.isSPDPresent( dev_addr ):
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logger().log( "[CHIPSEC] SPD for DIMM 0x%X is not found" % dev_addr )
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return
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_spd.decode( dev_addr )
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else:
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_dimms = _spd.detect()
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for d in _dimms: _spd.decode( d )
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elif( 'read' == op ) or ( 'write' == op ):
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if len(argv) > 3:
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dev = argv[3].upper()
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dev_addr = chipsec.hal.spd.SPD_DIMM_ADDRESSES[ dev ] if dev in chipsec.hal.spd.SPD_DIMM_ADDRESSES else int(argv[3],16)
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if not _spd.isSPDPresent( dev_addr ):
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logger().log( "[CHIPSEC] SPD for DIMM 0x%X is not found" % dev_addr )
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return
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off = int(argv[4],16)
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if( 'read' == op ):
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val = _spd.read_byte( off, dev_addr )
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logger().log( "[CHIPSEC] SPD read: offset 0x%X = 0x%X" % (off, val) )
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elif( 'write' == op ):
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val = int(argv[5],16)
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logger().log( "[CHIPSEC] SPD write: offset 0x%X = 0x%X" % (off, val) )
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_spd.write_byte( off, val, dev_addr )
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else:
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logger().error( "unknown command-line option '%.32s'" % op )
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logger().log( spd.__doc__ )
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return
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logger().log( "[CHIPSEC] (spd) time elapsed %.3f" % (time.time()-t) )
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chipsec_util.commands['spd'] = {'func' : spd, 'start_driver' : True, 'help' : spd.__doc__ }
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