mirror of
https://github.com/chipsec/chipsec
synced 2026-06-08 13:31:00 +00:00
Erik Bjorge
15bdde362d
Added a selectable MMIO based MSGBUS interface that can be selected by tests or the configuration register type.
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) 2010-2016, 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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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.msgbus import MsgBus
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# Message Bus
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class MsgBusCommand(BaseCommand):
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"""
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>>> chipsec_util msgbus read <port> <register>
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>>> chipsec_util msgbus write <port> <register> <value>
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>>> chipsec_util msgbus mm_read <port> <register>
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>>> chipsec_util msgbus mm_write <port> <register> <value>
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>>> chipsec_util msgbus message <port> <register> <opcode> [value]
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>>>
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>>> <port> : message bus port of the target unit
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>>> <register>: message bus register/offset in the target unit port
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>>> <value> : value to be written to the message bus register/offset
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>>> <opcode> : opcode of the message on the message bus
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Examples:
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>>> chipsec_util msgbus read 0x3 0x2E
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>>> chipsec_util msgbus mm_write 0x3 0x27 0xE0000001
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>>> chipsec_util msgbus message 0x3 0x2E 0x10
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>>> chipsec_util msgbus message 0x3 0x2E 0x11 0x0
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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) > 7 or len(self.argv) < 5:
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print MsgBusCommand.__doc__
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return
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op = self.argv[2]
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t = time.time()
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_msgbus = self.cs.msgbus
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res = None
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port = int(self.argv[3], 16)
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reg = int(self.argv[4], 16)
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if 'read' == op:
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self.logger.log("[CHIPSEC] msgbus read: port 0x%02X + 0x%08X" % (port, reg))
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res = _msgbus.msgbus_reg_read( port, reg )
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elif 'write' == op:
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if len(self.argv) < 6:
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print msgbuscmd.__doc__
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return
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val = int(self.argv[5], 16)
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self.logger.log("[CHIPSEC] msgbus write: port 0x%02X + 0x%08X < 0x%08X" % (port, reg, val))
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res = _msgbus.msgbus_reg_write( port, reg, val )
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elif 'mm_read' == op:
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self.logger.log("[CHIPSEC] MMIO msgbus read: port 0x%02X + 0x%08X" % (port, reg))
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res = _msgbus.mm_msgbus_reg_read( port, reg )
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elif 'mm_write' == op:
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if len(self.argv) < 6:
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print msgbuscmd.__doc__
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return
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val = int(self.argv[5], 16)
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self.logger.log("[CHIPSEC] MMIO msgbus write: port 0x%02X + 0x%08X < 0x%08X" % (port, reg, val))
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res = _msgbus.mm_msgbus_reg_write( port, reg, val )
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elif 'message' == op:
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opcode = int(self.argv[5], 16)
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val = None if len(self.argv) < 7 else int(self.argv[6], 16)
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self.logger.log("[CHIPSEC] msgbus message: port 0x%02X + 0x%08X, opcode: 0x%02X" % (port, reg, opcode))
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if val is not None: self.logger.log("[CHIPSEC] data: 0x%08X" % val)
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res = _msgbus.msgbus_send_message( port, reg, opcode, val )
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else:
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print msgbuscmd.__doc__
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return
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if res is not None: self.logger.log("[CHIPSEC] result: 0x%08X" % res)
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self.logger.log( "[CHIPSEC] (msgbus) time elapsed %.3f" % (time.time()-t) )
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commands = { 'msgbus': MsgBusCommand }
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