| # # @file | |
| # | |
| # This file is used to handle the variable attributes and property information | |
| # | |
| # | |
| # Copyright (c) 2015 - 2018, Intel Corporation. All rights reserved.<BR> | |
| # SPDX-License-Identifier: BSD-2-Clause-Patent | |
| # | |
| class VariableAttributes(object): | |
| EFI_VARIABLE_NON_VOLATILE = 0x00000001 | |
| EFI_VARIABLE_BOOTSERVICE_ACCESS = 0x00000002 | |
| EFI_VARIABLE_RUNTIME_ACCESS = 0x00000004 | |
| VAR_CHECK_VARIABLE_PROPERTY_READ_ONLY = 0x00000001 | |
| VarAttributesMap = { | |
| "NV":EFI_VARIABLE_NON_VOLATILE, | |
| "BS":EFI_VARIABLE_BOOTSERVICE_ACCESS, | |
| "RT":EFI_VARIABLE_RUNTIME_ACCESS, | |
| "RO":VAR_CHECK_VARIABLE_PROPERTY_READ_ONLY | |
| } | |
| def __init__(self): | |
| pass | |
| @staticmethod | |
| def GetVarAttributes(var_attr_str): | |
| VarAttr = 0x00000000 | |
| VarProp = 0x00000000 | |
| attr_list = var_attr_str.split(",") | |
| for attr in attr_list: | |
| attr = attr.strip() | |
| if attr == 'RO': | |
| VarProp = VariableAttributes.VAR_CHECK_VARIABLE_PROPERTY_READ_ONLY | |
| else: | |
| VarAttr = VarAttr | VariableAttributes.VarAttributesMap.get(attr, 0x00000000) | |
| return VarAttr, VarProp | |
| @staticmethod | |
| def ValidateVarAttributes(var_attr_str): | |
| if not var_attr_str: | |
| return True, "" | |
| attr_list = var_attr_str.split(",") | |
| attr_temp = [] | |
| for attr in attr_list: | |
| attr = attr.strip() | |
| attr_temp.append(attr) | |
| if attr not in VariableAttributes.VarAttributesMap: | |
| return False, "The variable attribute %s is not support to be specified in dsc file. Supported variable attribute are ['BS','NV','RT','RO'] " | |
| if 'RT' in attr_temp and 'BS' not in attr_temp: | |
| return False, "the RT attribute need the BS attribute to be present" | |
| return True, "" |