1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
|
# # @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, ""
|
