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