mirror of
https://github.com/chipsec/chipsec
synced 2026-06-08 13:31:00 +00:00
Dan Scott
66 lines
2.8 KiB
Python
66 lines
2.8 KiB
Python
# CHIPSEC: Platform Security Assessment Framework
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# Copyright (c) 2024, 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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from chipsec.library.logger import logger
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class Control:
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def __init__(self, cs) -> None:
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self.cs = cs
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def get(self, control_name: str, cpu_thread: int=0, with_print: bool=False) -> int:
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'''Reads some control field (by name)'''
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control = self.cs.Cfg.CONTROLS[control_name]
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reg = control['register']
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field = control['field']
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reg_data = self.cs.register.read(reg, cpu_thread)
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if logger().VERBOSE or with_print:
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self.cs.register.print(reg, reg_data)
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return self.cs.register.get_field(reg, reg_data, field)
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def set(self, control_name: str, control_value: int, cpu_thread: int=0) -> bool:
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'''Writes some control field (by name)'''
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control = self.cs.Cfg.CONTROLS[control_name]
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reg = control['register']
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field = control['field']
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return self.cs.register.write_field(reg, field, control_value, cpu_thread=cpu_thread)
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def is_defined(self, control_name:str) -> bool:
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'''Returns True if control_name Control is defined.'''
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try:
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return (self.cs.Cfg.CONTROLS[control_name] is not None)
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except KeyError:
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return False
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def is_all_ffs(self, control_name: str, cpu_thread: int=0, field_only: bool=False) -> bool:
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'''Returns True if control_name Control value is all 0xFFs (all 1's)'''
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if self.is_defined(control_name) is None:
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if logger().DEBUG:
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logger().log_error(f"Control '{control_name}' not defined.")
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return True
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control = self.cs.Cfg.CONTROLS[control_name]
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reg_def = control['register']
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reg_data = self.cs.register.read(reg_def, cpu_thread)
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if field_only:
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reg_field = control['field']
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reg_data = self.cs.register.get_field(reg_def, reg_data, reg_field)
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result = self.cs.register.is_field_all_ones(reg_def, reg_field, reg_data)
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else:
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result = self.cs.register.is_all_ffs(reg_def, reg_data)
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return result
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