Add support for new global variable defined in the UEFI 2.8
specification. This provides a bitmask of which calls are
implemented by the firmware during runtime services.
Change-Id: If871e16052ecd871fd03a0eef2e3ed5fa5beb93c
Signed-off-by: Jeff Brasen <jbra...@nvidia.com>
---
.../Library/VarCheckUefiLib/VarCheckUefiLibNullClass.c | 11 +++++++++++
MdePkg/Include/Guid/GlobalVariable.h | 7 +++++++
2 files changed, 18 insertions(+)
diff --git a/MdeModulePkg/Library/VarCheckUefiLib/VarCheckUefiLibNullClass.c
b/MdeModulePkg/Library/VarCheckUefiLib/VarCheckUefiLibNullClass.c
index e3bf04a..4264892 100644
--- a/MdeModulePkg/Library/VarCheckUefiLib/VarCheckUefiLibNullClass.c
+++ b/MdeModulePkg/Library/VarCheckUefiLib/VarCheckUefiLibNullClass.c
@@ -553,6 +553,17 @@ UEFI_DEFINED_VARIABLE_ENTRY mGlobalVariableList[] = {
},
NULL
},
+ {
+ EFI_RUNTIME_SERVICES_SUPPORTED_VARIABLE_NAME,
+ {
+ VAR_CHECK_VARIABLE_PROPERTY_REVISION,
+ VAR_CHECK_VARIABLE_PROPERTY_READ_ONLY,
+ VARIABLE_ATTRIBUTE_BS_RT,
+ sizeof (UINT16),
+ sizeof (UINT16)
+ },
+ NULL
+ },
};
UEFI_DEFINED_VARIABLE_ENTRY mGlobalVariableList2[] = {
diff --git a/MdePkg/Include/Guid/GlobalVariable.h
b/MdePkg/Include/Guid/GlobalVariable.h
index 7abc103..06a8a12 100644
--- a/MdePkg/Include/Guid/GlobalVariable.h
+++ b/MdePkg/Include/Guid/GlobalVariable.h
@@ -182,5 +182,12 @@ extern EFI_GUID gEfiGlobalVariableGuid;
/// Its attribute is BS+RT.
///
#define EFI_VENDOR_KEYS_VARIABLE_NAME L"VendorKeys"
+///
+/// Bitmask of which calls are implemented by the firmware during runtime
services.
+/// RT access is required only if GetVariable() is implemented by runtime
services.
+/// Should be treated as read-only.
+/// Its attribute is BS+RT.
+///
+#define EFI_RUNTIME_SERVICES_SUPPORTED_VARIABLE_NAME
L"RuntimeServicesSupported"
#endif
--
2.7.4
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