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https://github.com/chipsec/chipsec
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CHIPSEC
0654edca19
Revision 1.2.0 -------------- This version includes the following new or updated modules: #. Merged common.secureboot.keys module into common.secureboot.variables module #. Updated tools.secureboot.te module to be able to test PE/TE issue on Linux or UEFI shell #. Updated tools.smm.smm_ptr module This version includes the following updates: #. Added the *controls* abstraction. Modules are encouraged to use ``get_control`` and ``set_control`` when interacting with platform registers. This permits greater flexibility in case the register that controls a given feature or configuration changes between platform generations. The controls are defined in the platform XML file. At this time, only a small number of controls are defined. We plan to move existing modules over to this new mechanism. #. Added XML Schema for the XML configuration files #. Support for reading, writing, and listing UEFI variables from the UEFI Shell environment has been added. #. Added support for decompression while SPI flash parsing via ``decode`` or ``uefi decode`` commands in Linux #. Added basic ACPI table parsing to HAL (RSDP, RSDT/XSDT, APIC, DMAR) #. Added UEFI tables searching and parsing to HAL (EFI system table, runtime services table, boot services table, DXE services table, EFI configuration table) #. Added DIMM Serial Presence Detect (SPD) ROM dumping and parsing to HAL #. Added ``uefi s3bootscript`` command parsing the S3 boot script to chipsec_util.py #. Added virtual-to-physical address translation function to Linux/EFI/Windows helpers #. Added support of server platforms (Haswell server and Ivy Town) to chipset.py This version has the following known issues: #. Decompression of images in SPI flash parsing is not available in UEFI shell. #. When calling alloc_phys_mem, the argument to set maximum physical address (max_pa) for allocation is ignored on linux. A message will be printed in dmesg if the allocation is above the max_pa that is passed in, but the call will return anyway. #. UEFI Shell environment does not support ``cpuid`` or ``get_thread_count``. There are functions that simply warn that they are not supported. #. Size of PCIEXBAR (MMCFG) is calculated incorrectly
92 lines
2.7 KiB
Python
92 lines
2.7 KiB
Python
#!/usr/local/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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"""
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The mem command provides direct access to read and write physical memory.
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"""
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__version__ = '1.0'
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import os
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import sys
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import time
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import chipsec_util
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from chipsec.logger import *
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from chipsec.file import *
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# Physical Memory
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def mem(argv):
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"""
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>>> chipsec_util mem <phys_addr_hi> <phys_addr_lo> <length> [value]
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Examples:
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>>> chipsec_util mem 0x0 0x41E 0x20
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>>> chipsec_util mem 0x0 0xA0000 4 0x9090CCCC
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>>> chipsec_util mem 0x0 0xFED40000 0x4
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>>> chipsec_util mem allocate 0x1000
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"""
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phys_address_hi = 0
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phys_address_lo = 0
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phys_address = 0
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size = 0x100
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if 3 > len(argv):
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print mem.__doc__
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return
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op = argv[2]
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t = time.time()
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if 'allocate' == op and 4 == len(argv):
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size = int(argv[3],16)
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(va, pa) = chipsec_util._cs.mem.alloc_physical_mem( size )
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logger().log( '[CHIPSEC] Allocated %X bytes of physical memory: VA = 0x%016X, PA = 0x%016X' % (size, va, pa) )
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return
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if 4 > len(argv):
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print mem.__doc__
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return
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else:
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phys_address_hi = int(argv[2],16)
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phys_address_lo = int(argv[3],16)
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phys_address = ((phys_address_hi<<32) | phys_address_lo)
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if 6 == len(argv):
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value = int(argv[5],16)
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logger().log( '[CHIPSEC] Writing: PA = 0x%016X <- 0x%08X' % (phys_address, value) )
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chipsec_util._cs.mem.write_physical_mem_dword( phys_address, value )
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else:
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if 5 == len(argv): size = int(argv[4],16)
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out_buf = chipsec_util._cs.mem.read_physical_mem( phys_address, size )
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logger().log( '[CHIPSEC] Reading: PA = 0x%016X, len = 0x%X, output:' % (phys_address, len(out_buf)) )
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print_buffer( out_buf )
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logger().log( "[CHIPSEC] (mem) time elapsed %.3f" % (time.time()-t) )
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chipsec_util.commands['mem'] = {'func' : mem, 'start_driver' : True, 'help' : mem.__doc__ }
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