mirror of
https://github.com/chipsec/chipsec
synced 2026-06-08 13:31:00 +00:00
Nicholas Armour
139 lines
4.9 KiB
Python
139 lines
4.9 KiB
Python
#!/usr/bin/python
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#CHIPSEC: Platform Security Assessment Framework
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#Copyright (c) 2010-2019, 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 os
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import sys
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import time
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from argparse import ArgumentParser
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import chipsec_util
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from chipsec.command import BaseCommand
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from chipsec.logger import *
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from chipsec.file import *
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from chipsec.hal.ec import *
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# Embedded Controller
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class ECCommand(BaseCommand):
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"""
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>>> chipsec_util ec dump [<size>]
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>>> chipsec_util ec command <command>
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>>> chipsec_util ec read <start_offset> [<size>]
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>>> chipsec_util ec write <offset> <byte_val>
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>>> chipsec_util ec index [<offset>]
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Examples:
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>>> chipsec_util ec dump
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>>> chipsec_util ec command 0x001
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>>> chipsec_util ec read 0x2F
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>>> chipsec_util ec write 0x2F 0x00
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>>> chipsec_util ec index
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"""
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def requires_driver(self):
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parser = ArgumentParser(usage=ECCommand.__doc__)
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subparsers = parser.add_subparsers()
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parser_command = subparsers.add_parser('command')
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parser_command.add_argument("cmd",type=lambda sz: int(sz,0),help="EC command to issue")
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parser_command.set_defaults(func=self.command)
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parser_dump = subparsers.add_parser('dump')
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parser_dump.add_argument("size",type=lambda sz: int(sz,0), nargs='?', default=0x160,help="number of EC RAM bytes to read")
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parser_dump.set_defaults(func=self.dump)
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parser_read = subparsers.add_parser('read')
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parser_read.add_argument("start_offset",type=lambda sz: int(sz,0),help="offset to start reading EC memory")
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parser_read.add_argument("size",type=lambda sz: int(sz,0), nargs='?',help="number of EC RAM bytes to read")
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parser_read.set_defaults(func=self.read)
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parser_write = subparsers.add_parser('write')
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parser_write.add_argument("offset",type=lambda sz: int(sz,0),help="offset of byte to write")
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parser_write.add_argument("wval",type=lambda sz: int(sz,0),help="byte value to write into EC memory")
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parser_write.set_defaults(func=self.write)
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parser_index = subparsers.add_parser('index')
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parser_index.add_argument("offset",type=lambda sz: int(sz,0),nargs='?',help="offset to start reading EC memory")
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parser_index.set_defaults(func=self.index)
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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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else:
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return False
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def dump(self):
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self.logger.log("[CHIPSEC] EC dump")
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buf = self._ec.read_range(0,self.size)
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print_buffer(buf)
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def command(self):
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self.logger.log("[CHIPSEC] Sending EC command 0x{:X}".format(self.cmd))
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self._ec.write_command(self.cmd)
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def read(self):
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if self.size:
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buf = self._ec.read_range( self.start_offset, self.size )
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self.logger.log("[CHIPSEC] EC memory read: offset 0x{:X} size 0x{:X}".format(self.start_offset, self.size))
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print_buffer(buf)
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else:
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val = self._ec.read_memory(self.start_offset) if self.start_offset < 0x100 else self._ec.read_memory_extended(self.start_offset)
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self.logger.log( "[CHIPSEC] EC memory read: offset 0x{:X} = 0x{:X}".format(self.start_offset, val) )
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def write(self):
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self.logger.log( "[CHIPSEC] EC memory write: offset 0x{:X} = 0x{:X}".format(self.offset, self.wval) )
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if self.offset < 0x100:
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self._ec.write_memory( self.offset, self.wval )
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else:
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self._ec.write_memory_extended( self.offset, self.wval )
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def index(self):
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if self.offset:
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val = self._ec.read_idx(self.offset)
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self.logger.log( "[CHIPSEC] EC index I/O: reading memory offset 0x{:X}: 0x{:X}".format(self.offset, val) )
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else:
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self.logger.log( "[CHIPSEC] EC index I/O: dumping memory..." )
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mem =[]
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for off in range(0x10000):
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mem.append(chr(self._ec.read_idx(off)))
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print_buffer(mem)
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del mem
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def run(self):
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t = time.time()
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try:
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self._ec = EC( 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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self.func()
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self.logger.log( "[CHIPSEC] (ec) time elapsed {:.3f}".format(time.time()-t) )
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commands = { 'ec': ECCommand }
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