hackedteam/vector-edk

#!/usr/local/bin/python
#CHIPSEC: Platform Security Assessment Framework
#Copyright (c) 2010-2014, Intel Corporation
# 
#This program is free software; you can redistribute it and/or
#modify it under the terms of the GNU General Public License
#as published by the Free Software Foundation; Version 2.
#
#This program is distributed in the hope that it will be useful,
#but WITHOUT ANY WARRANTY; without even the implied warranty of
#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#GNU General Public License for more details.
#
#You should have received a copy of the GNU General Public License
#along with this program; if not, write to the Free Software
#Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
#
#Contact information:
#chipsec@intel.com
#




#
# usage as a standalone utility:
#
## \addtogroup standalone
#chipsec_util mem
#-------
#~~~
#chipsec_util mem <phys_addr_hi> <phys_addr_lo> <length> [value]
#''
#    Examples:
#''
#        chipsec_util mem 0x0 0x41E 0x20
#        chipsec_util mem 0x0 0xA0000 4 0x9090CCCC
#        chipsec_util mem 0x0 0xFED40000 0x4
#~~~
__version__ = '1.0'

import os
import sys
import time

import chipsec_util
from chipsec_util import chipsec_util_commands, _cs

from chipsec.logger     import *
from chipsec.file       import *

#from chipsec.hal.physmem    import Memory

#_cs = cs()

usage = "chipsec_util mem <phys_addr_hi> <phys_addr_lo> <length> [value]\n" + \
        "Examples:\n" + \
        "  chipsec_util mem 0x0 0x41E 0x20\n" + \
        "  chipsec_util mem 0x0 0xA0000 4 0x9090CCCC\n" + \
        "  chipsec_util mem 0x0 0xFED40000 0x4\n" + \
        "  chipsec_util mem allocate 0x1000\n\n"


chipsec_util.global_usage += usage



# ###################################################################
#
# Physical Memory
#
# ###################################################################
def mem(argv):
    phys_address_hi = 0
    phys_address_lo = 0
    phys_address    = 0
    size = 0x100

    op = argv[2]
    t = time.time()

    if 'allocate' == op and 4 == len(argv):
       size = int(argv[3],16)
       (va, pa) = _cs.mem.alloc_physical_mem( size )
       logger().log( '[CHIPSEC] Allocated %X bytes of physical memory: VA = 0x%016X, PA = 0x%016X' % (size, va, pa) )
       return

    if 4 > len(argv):
      print usage
      return
    else:
       phys_address_hi = int(argv[2],16)
       phys_address_lo = int(argv[3],16)
       phys_address = ((phys_address_hi<<32) | phys_address_lo)

    if 6 == len(argv):
       value = int(argv[5],16)
       logger().log( '[CHIPSEC] Writing: PA = 0x%016X <- 0x%08X' % (phys_address, value) )
       _cs.mem.write_physical_mem_dword( phys_address, value )
    else:
       if 5 == len(argv): size = int(argv[4],16)
       out_buf = _cs.mem.read_physical_mem( phys_address, size )
       logger().log( '[CHIPSEC] Reading: PA = 0x%016X, len = 0x%X, output:' % (phys_address, len(out_buf)) )
       print_buffer( out_buf )

    logger().log( "[CHIPSEC] (mem) time elapsed %.3f" % (time.time()-t) )

chipsec_util_commands['mem'] = {'func' : mem,     'start_driver' : True  }