#!/usr/local/bin/python
#CHIPSEC: Platform Security Assessment Framework
#Copyright (c) 2010-2015, 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
#




__version__ = '1.0'

import os
import sys
import time

import chipsec_util
import chipsec.hal.cpu

from chipsec.logger             import *

# ###################################################################
#
# CPU utility
#
# ###################################################################
def cpu_cmd( argv ):
    """
    >>> chipsec_util cpu info
    >>> chipsec_util cpu cr <cpu_id> <cr_number> [value]

    Examples:

    >>> chipsec_util cpu info
    >>> chipsec_util cpu cr 0 0
    >>> chipsec_util cpu cr 0 4 0x0
    """
    if len(argv) < 3:
        print cpu_cmd.__doc__
        return
    op = argv[2]
    t = time.time()

    try:
        _cpu = chipsec.hal.cpu.CPU( chipsec_util._cs )
    except chipsec.hal.cpu.CPURuntimeError, msg:
        print msg
        return

    #_cpu = chipsec_util._cs.cpu

    if 'info' == op:
        logger().log( "[CHIPSEC] CPU information:" )
        ht               = _cpu.is_HT_active()      
        threads_per_core = _cpu.get_number_logical_processor_per_core()
        threads_per_pkg  = _cpu.get_number_logical_processor_per_package()
        cores_per_pkg    = _cpu.get_number_physical_processor_per_package()
        threads_count    = _cpu.get_number_threads_from_APIC_table()
        sockets_count    = _cpu.get_number_sockets_from_APIC_table()
        logger().log( "          Hyper-Threading         : %s" % ('Enabled' if ht else 'Disabled') )
        logger().log( "          CPU cores per package   : %d" % cores_per_pkg )
        logger().log( "          CPU threads per core    : %d" % threads_per_core )
        logger().log( "          CPU threads per package : %d" % threads_per_pkg )
        logger().log( "          Number of sockets       : %d" % sockets_count )
        logger().log( "          Number of CPU threads   : %d" % threads_count )

    elif 'cr' == op:
        if len(argv) < 5:
            print cpu_cmd.__doc__
            return

        cpu_thread_id = int(argv[3],10)
        cr_number     = int(argv[4],16)

        if len(argv) > 5:
            value = int(argv[5], 16)
            logger().log( "[CHIPSEC] CPU: %d write CR%d <- 0x%08X" % (cpu_thread_id, cr_number, value) )
            chipsec_util._cs.cpu.write_cr( cpu_thread_id, cr_number, value )
            return True
        else:
            value = chipsec_util._cs.cpu.read_cr( cpu_thread_id, cr_number )
            logger().log( "[CHIPSEC] CPU: %d read CR%d -> 0x%08X" % (cpu_thread_id, cr_number, value) )
            return value

    else:
        print cpu_cmd.__doc__
        return
    
    logger().log( "[CHIPSEC] (cpu) time elapsed %.3f" % (time.time()-t) )


chipsec_util.commands['cpu'] = {'func' : cpu_cmd, 'start_driver' : True, 'help' : cpu_cmd.__doc__  }