mirror of
https://github.com/chipsec/chipsec
synced 2026-06-08 13:31:00 +00:00
Aaron Frinzell
110 lines
4.0 KiB
Python
110 lines
4.0 KiB
Python
#!/usr/bin/python
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#CHIPSEC: Platform Security Assessment Framework
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#Copyright (c) 2010-2020, 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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from chipsec.command import BaseCommand
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from chipsec.hal import mmio
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from argparse import ArgumentParser
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from time import time
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# ###################################################################
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#
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# Access to Memory Mapped PCIe Configuration Space (MMCFG)
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#
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# ###################################################################
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class MMIOCommand(BaseCommand):
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"""
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>>> chipsec_util mmio list
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>>> chipsec_util mmio dump <MMIO_BAR_name>
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>>> chipsec_util mmio read <MMIO_BAR_name> <offset> <width>
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>>> chipsec_util mmio write <MMIO_BAR_name> <offset> <width> <value>
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Examples:
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>>> chipsec_util mmio list
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>>> chipsec_util mmio dump MCHBAR
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>>> chipsec_util mmio read SPIBAR 0x74 0x4
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>>> chipsec_util mmio write SPIBAR 0x74 0x4 0xFFFF0000
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"""
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def requires_driver(self):
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parser = ArgumentParser( prog='chipsec_util mmio', usage=MMIOCommand.__doc__ )
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subparsers = parser.add_subparsers()
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parser_list = subparsers.add_parser('list')
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parser_list.set_defaults(func=self.list_bars)
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parser_dump = subparsers.add_parser('dump')
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parser_dump.add_argument('bar_name', type=str, help='MMIO BAR to dump')
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parser_dump.set_defaults(func=self.dump_bar)
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parser_read = subparsers.add_parser('read')
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parser_read.add_argument('bar_name', type=str, help='MMIO BAR to read')
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parser_read.add_argument('offset', type=lambda x: int(x,16), help='Offset value (hex)')
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parser_read.add_argument('width', type=lambda x: int(x,16), choices=[1,2,4,8], help='Width value [1, 2, 4, 8] (hex)')
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parser_read.set_defaults(func=self.read_bar)
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parser_write = subparsers.add_parser('write')
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parser_write.add_argument('bar_name', type=str, help='MMIO BAR to write')
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parser_write.add_argument('offset', type=lambda x: int(x,16), help='Offset value (hex)')
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parser_write.add_argument('width', type=lambda x: int(x,16), choices=[1,2,4,8], help='Width value [1, 2, 4, 8] (hex)')
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parser_write.add_argument('value', type=lambda x: int(x,16), help='Value to write (hex)')
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parser_write.set_defaults(func=self.write_bar)
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parser.parse_args(self.argv[2:], namespace=self)
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if hasattr(self, 'func'):
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return True
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return False
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def list_bars(self):
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self.mmio_.list_MMIO_BARs()
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def dump_bar(self):
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self.logger.log( "[CHIPSEC] Dumping {} MMIO space..".format(self.bar_name) )
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self.mmio_.dump_MMIO_BAR(self.bar_name.upper())
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def read_bar(self):
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bar = self.bar_name.upper()
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reg = self.mmio_.read_MMIO_BAR_reg(bar, self.offset, self.width)
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self.logger.log( "[CHIPSEC] Read {} + 0x{:X}: 0x{:08X}".format(bar, self.offset, reg) )
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def write_bar(self):
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bar = self.bar_name.upper()
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self.logger.log( "[CHIPSEC] Write {} + 0x{:X}: 0x{:08X}".format(bar, self.offset, self.value) )
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self.mmio_.write_MMIO_BAR_reg(bar, self.offset, self.value, self.width)
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def run(self):
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self.mmio_ = mmio.MMIO(self.cs)
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t = time()
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self.func()
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self.logger.log( "[CHIPSEC] (mmio) time elapsed {:.3f}".format(time() -t) )
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commands = { 'mmio': MMIOCommand }
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