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Diffstat (limited to 'EDK/Foundation/Library/EdkIIGlueLib/Library/EdkDxeRuntimeDriverLib/Common/RuntimeLib.c')
| -rw-r--r-- | EDK/Foundation/Library/EdkIIGlueLib/Library/EdkDxeRuntimeDriverLib/Common/RuntimeLib.c | 261 |
1 files changed, 261 insertions, 0 deletions
diff --git a/EDK/Foundation/Library/EdkIIGlueLib/Library/EdkDxeRuntimeDriverLib/Common/RuntimeLib.c b/EDK/Foundation/Library/EdkIIGlueLib/Library/EdkDxeRuntimeDriverLib/Common/RuntimeLib.c new file mode 100644 index 0000000..e0b434b --- /dev/null +++ b/EDK/Foundation/Library/EdkIIGlueLib/Library/EdkDxeRuntimeDriverLib/Common/RuntimeLib.c @@ -0,0 +1,261 @@ +/*++ + +Copyright (c) 2004 - 2006, Intel Corporation +All rights reserved. This program and the accompanying materials +are licensed and made available under the terms and conditions of the BSD License +which accompanies this distribution. The full text of the license may be found at +http://opensource.org/licenses/bsd-license.php + +THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, +WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. + + +Module Name: + + RuntimeLib.c + +Abstract: + + Runtime lib + +--*/ + +#include "..\RuntimeLibInternal.h" + +// +// Driver Lib Module Globals +// +STATIC EFI_EVENT mRuntimeNotifyEvent; +STATIC EFI_EVENT mEfiVirtualNotifyEvent; +STATIC BOOLEAN mEfiGoneVirtual = FALSE; +STATIC BOOLEAN mEfiAtRuntime = FALSE; + +EFI_RUNTIME_SERVICES *mRT = NULL; + +VOID +EFIAPI +RuntimeDriverExitBootServices ( + IN EFI_EVENT Event, + IN VOID *Context + ) +/*++ + +Routine Description: + + Set AtRuntime flag as TRUE after ExitBootServices + +Arguments: + + Event - The Event that is being processed + + Context - Event Context + +Returns: + + None + +--*/ +{ + EFI_EVENT_NOTIFY ChildNotifyEventHandler; + UINTN Index; + + for (Index = 0; + _gDriverExitBootServicesEvent[Index] != NULL; + Index++) { + ChildNotifyEventHandler = _gDriverExitBootServicesEvent[Index]; + ChildNotifyEventHandler (Event, NULL); + } + + mEfiAtRuntime = TRUE; +} + +STATIC +VOID +EFIAPI +RuntimeLibVirtualNotifyEvent ( + IN EFI_EVENT Event, + IN VOID *Context + ) +/*++ + +Routine Description: + + Fixup internal data so that EFI can be call in virtual mode. + Call the passed in Child Notify event and convert any pointers in + lib to virtual mode. + +Arguments: + + Event - The Event that is being processed + + Context - Event Context + +Returns: + + None + +--*/ +{ + UINTN Index; + EFI_EVENT_NOTIFY ChildNotifyEventHandler; + + for (Index = 0; + _gDriverSetVirtualAddressMapEvent[Index] != NULL; + Index++) { + ChildNotifyEventHandler = _gDriverSetVirtualAddressMapEvent[Index]; + ChildNotifyEventHandler (Event, NULL); + } + + // + // Update global for Runtime Services Table and IO + // + EfiConvertInternalPointer ((VOID **) &mRT); + + // + // Clear out BootService globals + // + gBS = NULL; + gST = NULL; + mEfiGoneVirtual = TRUE; +} + +EFI_STATUS +EFIAPI +RuntimeDriverLibConstruct ( + IN EFI_HANDLE ImageHandle, + IN EFI_SYSTEM_TABLE *SystemTable + ) +/*++ + +Routine Description: + + Intialize runtime Driver Lib if it has not yet been initialized. + +Arguments: + + ImageHandle - The firmware allocated handle for the EFI image. + + SystemTable - A pointer to the EFI System Table. + + GoVirtualChildEvent - Caller can register a virtual notification event. + +Returns: + + EFI_STATUS always returns EFI_SUCCESS except EFI_ALREADY_STARTED if already started. + +--*/ +{ + EFI_STATUS Status; + + mRT = SystemTable->RuntimeServices; + + // + // Register our ExitBootServices () notify function + // + Status = gBS->CreateEvent ( + EFI_EVENT_SIGNAL_EXIT_BOOT_SERVICES, + EFI_TPL_NOTIFY, + RuntimeDriverExitBootServices, + NULL, + &mRuntimeNotifyEvent + ); + + ASSERT_EFI_ERROR (Status); + + // + // Register SetVirtualAddressMap () notify function + // + Status = gBS->CreateEvent ( + EFI_EVENT_SIGNAL_VIRTUAL_ADDRESS_CHANGE, + EFI_TPL_NOTIFY, + RuntimeLibVirtualNotifyEvent, + NULL, + &mEfiVirtualNotifyEvent + ); + + ASSERT_EFI_ERROR (Status); + + return EFI_SUCCESS; +} + +EFI_STATUS +EFIAPI +RuntimeDriverLibDeconstruct ( + VOID + ) +/*++ + +Routine Description: + + This routine will free some resources which have been allocated in + EfiInitializeRuntimeDriverLib(). If a runtime driver exits with an error, + it must call this routine to free the allocated resource before the exiting. + +Arguments: + + None + +Returns: + + EFI_SUCCESS - Shotdown the Runtime Driver Lib successfully + EFI_UNSUPPORTED - Runtime Driver lib was not initialized at all + +--*/ +{ + EFI_STATUS Status; + + // + // Close our ExitBootServices () notify function + // + Status = gBS->CloseEvent (mRuntimeNotifyEvent); + ASSERT_EFI_ERROR (Status); + + // + // Close SetVirtualAddressMap () notify function + // + Status = gBS->CloseEvent (mEfiVirtualNotifyEvent); + ASSERT_EFI_ERROR (Status); + + return EFI_SUCCESS; +} + +BOOLEAN +EfiAtRuntime ( + VOID + ) +/*++ + +Routine Description: + Return TRUE if ExitBootServices () has been called + +Arguments: + NONE + +Returns: + TRUE - If ExitBootServices () has been called + +--*/ +{ + return mEfiAtRuntime; +} + +BOOLEAN +EfiGoneVirtual ( + VOID + ) +/*++ + +Routine Description: + Return TRUE if SetVirtualAddressMap () has been called + +Arguments: + NONE + +Returns: + TRUE - If SetVirtualAddressMap () has been called + +--*/ +{ + return mEfiGoneVirtual; +} + |