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https://github.com/chipsec/chipsec
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CHIPSEC
97 lines
2.8 KiB
Python
97 lines
2.8 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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"""
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The io command allows direct access to read and write I/O port space.
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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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import chipsec.hal.iobar
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from chipsec.logger import *
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from chipsec.file import *
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# Port I/O
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def port_io(argv):
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"""
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>>> chipsec_util io list
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>>> chipsec_util io <io_port> <width> [value]
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Examples:
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>>> chipsec_util io list
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>>> chipsec_util io 0x61 1
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>>> chipsec_util io 0x430 byte 0x0
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"""
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if 3 > len(argv):
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print port_io.__doc__
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return
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try:
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_iobar = chipsec.hal.iobar.iobar( chipsec_util._cs )
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except chipsec.hal.iobar.IOBARRuntimeError, msg:
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print msg
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return
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op = argv[2]
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if ( 'list' == op ):
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_iobar.list_IO_BARs()
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return
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t = time.time()
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if len(argv) < 3:
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print port_io.__doc__
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return
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io_port = int(argv[2],16)
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width = 0x1
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if len(argv) > 3:
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width = chipsec_util.get_option_width(argv[3]) if chipsec_util.is_option_valid_width(argv[3]) else int(argv[3],16)
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if 5 == len(argv):
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value = int(argv[4], 16)
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logger().log( "[CHIPSEC] OUT 0x%04X <- 0x%08X (size = 0x%02x)" % (io_port, value, width) )
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if 0x1 == width: chipsec_util._cs.io.write_port_byte( io_port, value )
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elif 0x2 == width: chipsec_util._cs.io.write_port_word( io_port, value )
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elif 0x4 == width: chipsec_util._cs.io.write_port_dword( io_port, value )
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else:
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if 0x1 == width: value = chipsec_util._cs.io.read_port_byte( io_port )
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elif 0x2 == width: value = chipsec_util._cs.io.read_port_word( io_port )
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elif 0x4 == width: value = chipsec_util._cs.io.read_port_dword( io_port )
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logger().log( "[CHIPSEC] IN 0x%04X -> 0x%08X (size = 0x%02x)" % (io_port, value, width) )
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logger().log( "[CHIPSEC] (io) time elapsed %.3f" % (time.time()-t) )
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chipsec_util.commands['io'] = {'func' : port_io, 'start_driver' : True, 'help' : port_io.__doc__ }
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