mirror of
https://github.com/chipsec/chipsec
synced 2026-06-08 13:31:00 +00:00
BrentHoltsclaw
90 lines
3.0 KiB
Python
90 lines
3.0 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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import time
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from chipsec.command import BaseCommand
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from chipsec.logger import print_buffer
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from chipsec.hal.smbus import *
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class SMBusCommand(BaseCommand):
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"""
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>>> chipsec_util smbus read <device_addr> <start_offset> [size]
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>>> chipsec_util smbus write <device_addr> <offset> <byte_val>
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Examples:
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>>> chipsec_util smbus read 0xA0 0x0 0x100
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"""
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def requires_driver(self):
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# No driver required when printing the util documentation
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if len(self.argv) < 3:
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return False
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return True
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def run(self):
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if len(self.argv) < 3:
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print (SMBusCommand.__doc__)
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return
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try:
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_smbus = SMBus( self.cs )
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except BaseException as msg:
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print (msg)
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return
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op = self.argv[2]
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t = time.time()
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if not _smbus.is_SMBus_supported():
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self.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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if ( 'read' == op ):
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dev_addr = int(self.argv[3],16)
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start_off = int(self.argv[4],16)
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if len(self.argv) > 5:
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size = int(self.argv[5],16)
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buf = _smbus.read_range( dev_addr, start_off, size )
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self.logger.log( "[CHIPSEC] SMBus read: device 0x{:X} offset 0x{:X} size 0x{:X}".format(dev_addr, start_off, size) )
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print_buffer( buf )
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else:
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val = _smbus.read_byte( dev_addr, start_off )
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self.logger.log( "[CHIPSEC] SMBus read: device 0x{:X} offset 0x{:X} = 0x{:X}".format(dev_addr, start_off, val) )
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elif ( 'write' == op ):
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dev_addr = int(self.argv[3],16)
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off = int(self.argv[4],16)
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val = int(self.argv[5],16)
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self.logger.log( "[CHIPSEC] SMBus write: device 0x{:X} offset 0x{:X} = 0x{:X}".format(dev_addr, off, val) )
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_smbus.write_byte( dev_addr, off, val )
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else:
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self.logger.error( "unknown command-line option '{:32}'".format(op) )
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print (SMBusCommand.__doc__)
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return
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self.logger.log( "[CHIPSEC] (smbus) time elapsed {:.3f}".format(time.time()-t) )
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commands = { 'smbus': SMBusCommand }
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