diff options
| author | yshang1 <yshang1@6f19259b-4bc3-4df7-8a09-765794883524> | 2007-06-27 07:22:18 +0000 |
|---|---|---|
| committer | yshang1 <yshang1@6f19259b-4bc3-4df7-8a09-765794883524> | 2007-06-27 07:22:18 +0000 |
| commit | ebcc8fb7ba239020d307ce113fb30ae120b6fcaf (patch) | |
| tree | 60bd29c6577f44ab27f89bbe3ee03bdc1af8f178 /MdePkg/Library/UefiRuntimeLib/RuntimeLib.c | |
| parent | 7c6d55db881ab57c8e1398a66619ae561581c17d (diff) | |
| download | edk2-platforms-ebcc8fb7ba239020d307ce113fb30ae120b6fcaf.tar.xz | |
Import the UefiRuntimeLib in MdePkg.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@2787 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'MdePkg/Library/UefiRuntimeLib/RuntimeLib.c')
| -rw-r--r-- | MdePkg/Library/UefiRuntimeLib/RuntimeLib.c | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/MdePkg/Library/UefiRuntimeLib/RuntimeLib.c b/MdePkg/Library/UefiRuntimeLib/RuntimeLib.c new file mode 100644 index 0000000000..3cb11d8924 --- /dev/null +++ b/MdePkg/Library/UefiRuntimeLib/RuntimeLib.c @@ -0,0 +1,173 @@ +/**@file
+ Library utility functions for Runtime driver.
+
+Copyright (c) 2006 Intel Corporation. <BR>
+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.
+
+**/
+
+#include <RuntimeLibInternal.h>
+
+///
+/// Driver Lib Module Globals
+///
+
+STATIC EFI_EVENT mEfiVirtualNotifyEvent;
+STATIC BOOLEAN mEfiGoneVirtual = FALSE;
+STATIC BOOLEAN mEfiAtRuntime = FALSE;
+EFI_RUNTIME_SERVICES *mRT;
+
+/**
+ Set AtRuntime flag as TRUE after ExitBootServices
+
+ @param[in] Event The Event that is being processed
+ @param[in] Context Event Context
+**/
+VOID
+EFIAPI
+RuntimeDriverExitBootServices (
+ IN EFI_EVENT Event,
+ IN VOID *Context
+ )
+{
+ //
+ // Clear out BootService globals
+ //
+ gBS = NULL;
+
+ mEfiAtRuntime = TRUE;
+}
+
+/**
+ 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.
+
+ @param[in] Event The Event that is being processed
+ @param[in] Context Event Context
+**/
+STATIC
+VOID
+EFIAPI
+RuntimeLibVirtualNotifyEvent (
+ IN EFI_EVENT Event,
+ IN VOID *Context
+ )
+{
+ 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
+ //
+ EfiConvertPointer (0, (VOID **) &mRT);
+
+ mEfiGoneVirtual = TRUE;
+}
+
+/**
+ Intialize runtime Driver Lib if it has not yet been initialized.
+
+ @param[in] ImageHandle The firmware allocated handle for the EFI image.
+ @param[in] SystemTable A pointer to the EFI System Table.
+
+ @return EFI_STATUS always returns EFI_SUCCESS except EFI_ALREADY_STARTED if already started.
+**/
+EFI_STATUS
+EFIAPI
+RuntimeDriverLibConstruct (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+{
+ EFI_STATUS Status;
+
+ ASSERT (SystemTable != NULL);
+ mRT = SystemTable->RuntimeServices;
+ ASSERT (mRT != NULL);
+
+ //
+ // Register SetVirtualAddressMap () notify function
+ //
+ ASSERT (gBS != NULL);
+ Status = gBS->CreateEvent (
+ EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE,
+ TPL_NOTIFY,
+ RuntimeLibVirtualNotifyEvent,
+ NULL,
+ &mEfiVirtualNotifyEvent
+ );
+
+ ASSERT_EFI_ERROR (Status);
+
+ return Status;
+}
+
+/**
+ 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.
+
+ @retval EFI_SUCCESS Shutdown the Runtime Driver Lib successfully
+ @retval EFI_UNSUPPORTED Runtime Driver lib was not initialized at all
+**/
+EFI_STATUS
+EFIAPI
+RuntimeDriverLibDeconstruct (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+{
+ EFI_STATUS Status;
+
+ //
+ // Close SetVirtualAddressMap () notify function
+ //
+ ASSERT (gBS != NULL);
+ Status = gBS->CloseEvent (mEfiVirtualNotifyEvent);
+ ASSERT_EFI_ERROR (Status);
+
+ return Status;
+}
+
+/**
+ Return TRUE if ExitBootServices () has been called
+
+ @retval TRUE If ExitBootServices () has been called
+**/
+BOOLEAN
+EFIAPI
+EfiAtRuntime (
+ VOID
+ )
+{
+ return mEfiAtRuntime;
+}
+
+/**
+ Return TRUE if SetVirtualAddressMap () has been called
+
+ @retval TRUE If SetVirtualAddressMap () has been called
+**/
+BOOLEAN
+EFIAPI
+EfiGoneVirtual (
+ VOID
+ )
+{
+ return mEfiGoneVirtual;
+}
+
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