mirror of
https://github.com/chipsec/chipsec
synced 2026-06-08 13:31:00 +00:00
BrentHoltsclaw
134 lines
5.1 KiB
Python
134 lines
5.1 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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import time
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from chipsec.command import BaseCommand
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from chipsec.hal.interrupts import Interrupts
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# ###################################################################
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#
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# CPU Interrupts
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#
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# ###################################################################
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class SMICommand(BaseCommand):
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"""
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>>> chipsec_util smi count
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>>> chipsec_util smi <thread_id> <SMI_code> <SMI_data> [RAX] [RBX] [RCX] [RDX] [RSI] [RDI]
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Examples:
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>>> chipsec_util smi count
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>>> chipsec_util smi 0x0 0xDE 0x0
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>>> chipsec_util smi 0x0 0xDE 0x0 0xAAAAAAAAAAAAAAAA ..
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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 SMICommand.__doc__
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return
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try:
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interrupts = Interrupts( self.cs )
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except RuntimeError, 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 'count' == op:
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self.logger.log( "[CHIPSEC] SMI count:" )
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for tid in range(self.cs.msr.get_cpu_thread_count()):
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smi_cnt = self.cs.read_register_field('MSR_SMI_COUNT', 'Count', cpu_thread=tid)
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self.logger.log( " CPU%d: %d" % (tid,smi_cnt) )
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else:
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SMI_code_port_value = 0xF
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SMI_data_port_value = 0x0
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if len(self.argv) > 4:
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thread_id = int(self.argv[2],16)
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SMI_code_port_value = int(self.argv[3],16)
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SMI_data_port_value = int(self.argv[4],16)
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self.logger.log( "[CHIPSEC] Sending SW SMI (code: 0x%02X, data: 0x%02X).." % (SMI_code_port_value, SMI_data_port_value) )
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if 5 == len(self.argv):
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interrupts.send_SMI_APMC( SMI_code_port_value, SMI_data_port_value )
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elif 11 == len(self.argv):
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_rax = int(self.argv[5],16)
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_rbx = int(self.argv[6],16)
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_rcx = int(self.argv[7],16)
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_rdx = int(self.argv[8],16)
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_rsi = int(self.argv[9],16)
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_rdi = int(self.argv[10],16)
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self.logger.log( " RAX: 0x%016X (AX will be overwridden with values of SW SMI ports B2/B3)" % _rax )
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self.logger.log( " RBX: 0x%016X" % _rbx )
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self.logger.log( " RCX: 0x%016X" % _rcx )
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self.logger.log( " RDX: 0x%016X (DX will be overwridden with 0x00B2)" % _rdx )
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self.logger.log( " RSI: 0x%016X" % _rsi )
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self.logger.log( " RDI: 0x%016X" % _rdi )
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ret = interrupts.send_SW_SMI( thread_id, SMI_code_port_value, SMI_data_port_value, _rax, _rbx, _rcx, _rdx, _rsi, _rdi )
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if not ret is None:
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self.logger.log( "Return values")
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self.logger.log( " RAX: {:16X}".format(ret[1]) )
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self.logger.log( " RBX: {:16X}".format(ret[2]) )
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self.logger.log( " RCX: {:16X}".format(ret[3]) )
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self.logger.log( " RDX: {:16X}".format(ret[4]) )
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self.logger.log( " RSI: {:16X}".format(ret[5]) )
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self.logger.log( " RDI: {:16X}".format(ret[6]) )
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else: print SMICommand.__doc__
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else:
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self.logger.error( "unknown command-line option '%.32s'" % op )
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print SMICommand.__doc__
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return
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self.logger.log( "[CHIPSEC] (smi) time elapsed %.3f" % (time.time()-t) )
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class NMICommand(BaseCommand):
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"""
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>>> chipsec_util nmi
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Examples:
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>>> chipsec_util nmi
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"""
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def requires_driver(self):
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return True
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def run(self):
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try:
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interrupts = Interrupts( self.cs )
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except RuntimeError, msg:
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print msg
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return
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t = time.time()
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self.logger.log( "[CHIPSEC] Sending NMI#.." )
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interrupts.send_NMI()
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self.logger.log( "[CHIPSEC] (nmi) time elapsed %.3f" % (time.time()-t) )
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commands = { 'smi': SMICommand, 'nmi': NMICommand }
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