mirror of
https://github.com/chipsec/chipsec
synced 2026-06-08 13:31:00 +00:00
abazhaniuk
c377a72e28
* merge * Add Debian packaging * cleanup * Removed incorrect info into Copyright. * One more: removed incorrect info in Copyright.
127 lines
4.1 KiB
Python
127 lines
4.1 KiB
Python
#!/usr/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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#
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# CHIPSEC: Platform Hardware Security Assessment Framework
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# (c) 2010-2012 Intel Corporation
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#
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# -------------------------------------------------------------------------------
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"""
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Access to Port I/O
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usage:
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>>> read_port_byte( 0x61 )
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>>> read_port_word( 0x61 )
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>>> read_port_dword( 0x61 )
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>>> write_port_byte( 0x71, 0 )
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>>> write_port_word( 0x71, 0 )
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>>> write_port_dword( 0x71, 0 )
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"""
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__version__ = '1.0'
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import struct
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import sys
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import os.path
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from chipsec.logger import logger
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class PortIORuntimeError (RuntimeError):
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pass
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class PortIO:
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def __init__( self, cs ):
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self.helper = cs.helper
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self.cs = cs
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def _read_port(self, io_port, size ):
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value = self.helper.read_io_port( io_port, size )
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if logger().VERBOSE: logger().log( "[io] IN 0x%04X: value = 0x%08X, size = 0x%02x" % (io_port, value, size) )
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return value
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def _write_port(self, io_port, value, size ):
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if logger().VERBOSE: logger().log( "[io] OUT 0x%04X: value = 0x%08X, size = 0x%02x" % (io_port, value, size) )
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status = self.helper.write_io_port( io_port, value, size )
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return status
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def read_port_dword(self, io_port ):
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value = self.helper.read_io_port( io_port, 4 )
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if logger().VERBOSE:
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logger().log( "[io] reading dword from I/O port 0x%04X -> 0x%08X" % (io_port, value) )
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return value
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def read_port_word(self, io_port ):
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value = self.helper.read_io_port( io_port, 2 )
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if logger().VERBOSE:
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logger().log( "[io] reading word from I/O port 0x%04X -> 0x%04X" % (io_port, value) )
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return value
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def read_port_byte(self, io_port ):
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value = self.helper.read_io_port( io_port, 1 )
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if logger().VERBOSE:
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logger().log( "[io] reading byte from I/O port 0x%04X -> 0x%02X" % (io_port, value) )
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return value
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def write_port_byte(self, io_port, value ):
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if logger().VERBOSE:
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logger().log( "[io] writing byte to I/O port 0x%04X <- 0x%02X" % (io_port, value) )
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self.helper.write_io_port( io_port, value, 1 )
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return
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def write_port_word(self, io_port, value ):
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if logger().VERBOSE:
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logger().log( "[io] writing word to I/O port 0x%04X <- 0x%04X" % (io_port, value) )
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self.helper.write_io_port( io_port, value, 2 )
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return
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def write_port_dword(self, io_port, value ):
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if logger().VERBOSE:
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logger().log( "[io] writing dword to I/O port 0x%04X <- 0x%08X" % (io_port, value) )
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self.helper.write_io_port( io_port, value, 4 )
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return
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#
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# Read registers from I/O range
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#
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def read_IO( self, range_base, range_size, size=1 ):
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n = range_size/size
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io_ports = []
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for i in xrange(n):
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io_ports.append( self._read_port( range_base + i*size, size ) )
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return io_ports
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#
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# Dump I/O range
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#
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def dump_IO( self, range_base, range_size, size=1 ):
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n = range_size/size
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fmt = '%0' + ( '%dX' % (size*2) )
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logger().log("[io] I/O register range [0x%04X:0x%04X+%04X]:" % (range_base,range_base,range_size))
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for i in xrange(n):
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reg = self._read_port( range_base + i*size, size )
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logger().log( ('+%04X: ' + fmt) % (i*size,reg) )
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