Add support for initializing and setting the UEFI 2.8 global variable
RuntimeServicesSupported based on the value of a PCD.
Change-Id: I8fbd404d492ff8278466edde8aa37d203537318c
Signed-off-by: Jeff Brasen <jbra...@nvidia.com>
---
MdeModulePkg/Universal/BdsDxe/BdsDxe.inf | 1 +
MdeModulePkg/Universal/BdsDxe/BdsEntry.c | 35 +++++++++++++++++++++++++++++++-
MdePkg/MdePkg.dec | 18 ++++++++++++++++
MdePkg/MdePkg.uni | 17 ++++++++++++++++
4 files changed, 70 insertions(+), 1 deletion(-)
diff --git a/MdeModulePkg/Universal/BdsDxe/BdsDxe.inf
b/MdeModulePkg/Universal/BdsDxe/BdsDxe.inf
index 9310b4d..52ec04f 100644
--- a/MdeModulePkg/Universal/BdsDxe/BdsDxe.inf
+++ b/MdeModulePkg/Universal/BdsDxe/BdsDxe.inf
@@ -90,6 +90,7 @@
gEfiMdePkgTokenSpaceGuid.PcdUefiVariableDefaultPlatformLang ##
CONSUMES
gEfiMdePkgTokenSpaceGuid.PcdHardwareErrorRecordLevel ##
CONSUMES
gEfiMdePkgTokenSpaceGuid.PcdPlatformBootTimeOut ##
CONSUMES
+ gEfiMdePkgTokenSpaceGuid.PcdRuntimeServicesSupported ##
CONSUMES
gEfiMdeModulePkgTokenSpaceGuid.PcdFirmwareVendor ##
CONSUMES
gEfiMdeModulePkgTokenSpaceGuid.PcdFirmwareRevision ##
CONSUMES
gEfiMdeModulePkgTokenSpaceGuid.PcdConInConnectOnDemand ##
CONSUMES
diff --git a/MdeModulePkg/Universal/BdsDxe/BdsEntry.c
b/MdeModulePkg/Universal/BdsDxe/BdsEntry.c
index d387dbe..16bc593 100644
--- a/MdeModulePkg/Universal/BdsDxe/BdsEntry.c
+++ b/MdeModulePkg/Universal/BdsDxe/BdsEntry.c
@@ -40,7 +40,8 @@ CHAR16 *mReadOnlyVariables[] = {
EFI_LANG_CODES_VARIABLE_NAME,
EFI_BOOT_OPTION_SUPPORT_VARIABLE_NAME,
EFI_HW_ERR_REC_SUPPORT_VARIABLE_NAME,
- EFI_OS_INDICATIONS_SUPPORT_VARIABLE_NAME
+ EFI_OS_INDICATIONS_SUPPORT_VARIABLE_NAME,
+ EFI_RUNTIME_SERVICES_SUPPORTED_VARIABLE_NAME
};
CHAR16 *mBdsLoadOptionName[] = {
@@ -626,6 +627,33 @@ BdsFormalizeOSIndicationVariable (
/**
+ Formalize RuntimeServicesSupported variable.
+
+**/
+VOID
+BdsFormalizeRuntimeServicesSupportedVariable (
+ VOID
+ )
+{
+ EFI_STATUS Status;
+ UINT16 RuntimeServicesSupported;
+
+ RuntimeServicesSupported = PcdGet16 (PcdRuntimeServicesSupported);
+ Status = gRT->SetVariable (
+ EFI_RUNTIME_SERVICES_SUPPORTED_VARIABLE_NAME,
+ &gEfiGlobalVariableGuid,
+ EFI_VARIABLE_BOOTSERVICE_ACCESS |
EFI_VARIABLE_RUNTIME_ACCESS,
+ sizeof(RuntimeServicesSupported),
+ &RuntimeServicesSupported
+ );
+ //
+ // Platform needs to make sure setting volatile variable before calling 3rd
party code shouldn't fail.
+ //
+ ASSERT_EFI_ERROR (Status);
+}
+
+/**
+
Validate variables.
**/
@@ -645,6 +673,11 @@ BdsFormalizeEfiGlobalVariable (
// Validate OSIndication related variable.
//
BdsFormalizeOSIndicationVariable ();
+
+ //
+ // Validate Runtime Services Supported variable.
+ //
+ BdsFormalizeRuntimeServicesSupportedVariable ();
}
/**
diff --git a/MdePkg/MdePkg.dec b/MdePkg/MdePkg.dec
index d022cc5..cdcb2f9 100644
--- a/MdePkg/MdePkg.dec
+++ b/MdePkg/MdePkg.dec
@@ -2297,5 +2297,23 @@
# @Prompt Boot Timeout (s)
gEfiMdePkgTokenSpaceGuid.PcdPlatformBootTimeOut|0xffff|UINT16|0x0000002c
+ ## Bitmask of supported runtime services<BR>
+ # BIT0 - GetTime
+ # BIT1 - SetTime
+ # BIT2 - GetWakeupTime
+ # BIT3 - SetWakeupTime
+ # BIT4 - GetVariable
+ # BIT5 - GetNextVariableName
+ # BIT6 - SetVariable
+ # BIT7 - SetVirtualAddressMap
+ # BIT8 - ConvertPointer
+ # BIT9 - GetNextHighMonotonicCount
+ # BIT10 - ResetSystem
+ # BIT11 - UpdateCapsule
+ # BIT12 - QueryCapsuleCapabilites
+ # BIT13 - QueryVariableInfo
+ # @Prompt Supported Runtime services bitmask.
+ gEfiMdePkgTokenSpaceGuid.PcdRuntimeServicesSupported|0x3FFF|UINT16|0x0000002e
+
[UserExtensions.TianoCore."ExtraFiles"]
MdePkgExtra.uni
diff --git a/MdePkg/MdePkg.uni b/MdePkg/MdePkg.uni
index 5c1fa24..1edf681 100644
--- a/MdePkg/MdePkg.uni
+++ b/MdePkg/MdePkg.uni
@@ -413,3 +413,20 @@
#string STR_gEfiMdePkgTokenSpaceGuid_PcdUartDefaultReceiveFifoDepth_HELP
#language en-US "Indicates the receive FIFO depth of UART controller.<BR><BR>"
+#string STR_gEfiMdePkgTokenSpaceGuid_PcdRuntimeServicesSupported_PROMPT
#language en-US "Supported Runtime Services bitmask"
+
+#string STR_gEfiMdePkgTokenSpaceGuid_PcdRuntimeServicesSupported_HELP
#language en-US "Bitmask of supported runtime services<BR><BR>\n"
+
"BIT0 - GetTime<BR>\n"
+
"BIT1 - SetTime<BR>\n"
+
"BIT2 - GetWakeupTime<BR>\n"
+
"BIT3 - SetWakeupTime<BR>\n"
+
"BIT4 - GetVariable<BR>\n"
+
"BIT5 - GetNextVariableName<BR>\n"
+
"BIT6 - SetVariable<BR>\n"
+
"BIT7 - SetVirtualAddressMap<BR>\n"
+
"BIT8 - ConvertPointer<BR>\n"
+
"BIT9 - GetNextHighMonotonicCount<BR>\n"
+
"BIT10 - ResetSystem<BR>\n"
+
"BIT11 - UpdateCapsule<BR>\n"
+
"BIT12 - QueryCapsuleCapabilities<BR>\n"
+
"BIT13 - QueryVariableInfo<BR>"
--
2.7.4
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