b798426d88
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@3184 6f19259b-4bc3-4df7-8a09-765794883524
239 lines
4.8 KiB
C
239 lines
4.8 KiB
C
/*++
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Copyright (c) 2006, Intel Corporation
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All rights reserved. This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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Module Name:
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RuntimeLib.c
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--*/
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#include <RuntimeLibInternal.h>
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//
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// Driver Lib Module Globals
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//
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static EFI_EVENT mEfiVirtualNotifyEvent;
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EFI_RUNTIME_SERVICES *mRT;
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VOID
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EFIAPI
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RuntimeDriverExitBootServices (
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IN EFI_EVENT Event,
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IN VOID *Context
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)
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/*++
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Routine Description:
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Set AtRuntime flag as TRUE after ExitBootServices
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Arguments:
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Event - The Event that is being processed
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Context - Event Context
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Returns:
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None
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--*/
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{
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if (EfiAtRuntime()) {
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return;
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}
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}
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STATIC
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VOID
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EFIAPI
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RuntimeLibVirtualNotifyEvent (
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IN EFI_EVENT Event,
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IN VOID *Context
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)
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/*++
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Routine Description:
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Fixup internal data so that EFI can be call in virtual mode.
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Call the passed in Child Notify event and convert any pointers in
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lib to virtual mode.
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Arguments:
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Event - The Event that is being processed
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Context - Event Context
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Returns:
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None
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--*/
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{
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UINTN Index;
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EFI_EVENT_NOTIFY ChildNotifyEventHandler;
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for (Index = 0; _gDriverSetVirtualAddressMapEvent[Index] != NULL; Index++) {
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ChildNotifyEventHandler = _gDriverSetVirtualAddressMapEvent[Index];
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ChildNotifyEventHandler (Event, NULL);
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}
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//
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// Update global for Runtime Services Table
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//
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EfiConvertPointer (0, (VOID **) &mRT);
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}
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EFI_STATUS
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EFIAPI
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RuntimeDriverLibConstruct (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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)
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/*++
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Routine Description:
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Intialize runtime Driver Lib if it has not yet been initialized.
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Arguments:
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ImageHandle - The firmware allocated handle for the EFI image.
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SystemTable - A pointer to the EFI System Table.
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GoVirtualChildEvent - Caller can register a virtual notification event.
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Returns:
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EFI_STATUS always returns EFI_SUCCESS except EFI_ALREADY_STARTED if already started.
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--*/
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{
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EFI_STATUS Status;
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mRT = SystemTable->RuntimeServices;
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//
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// Register SetVirtualAddressMap () notify function
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//
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if (_gDriverSetVirtualAddressMapEvent[0] != NULL) {
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Status = gBS->CreateEvent (
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EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE,
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TPL_NOTIFY,
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RuntimeLibVirtualNotifyEvent,
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NULL,
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&mEfiVirtualNotifyEvent
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);
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ASSERT_EFI_ERROR (Status);
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}
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return EFI_SUCCESS;
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}
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EFI_STATUS
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EFIAPI
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RuntimeDriverLibDeconstruct (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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)
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/*++
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Routine Description:
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This routine will free some resources which have been allocated in
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EfiInitializeRuntimeDriverLib(). If a runtime driver exits with an error,
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it must call this routine to free the allocated resource before the exiting.
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Arguments:
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None
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Returns:
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EFI_SUCCESS - Shotdown the Runtime Driver Lib successfully
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EFI_UNSUPPORTED - Runtime Driver lib was not initialized at all
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--*/
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{
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EFI_STATUS Status;
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//
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// Close SetVirtualAddressMap () notify function
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//
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if (_gDriverSetVirtualAddressMapEvent[0] != NULL) {
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Status = gBS->CloseEvent (mEfiVirtualNotifyEvent);
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ASSERT_EFI_ERROR (Status);
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}
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return EFI_SUCCESS;
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}
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BOOLEAN
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EFIAPI
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EfiAtRuntime (
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VOID
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)
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/*++
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Routine Description:
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Return TRUE if ExitBootService () has been called
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Arguments:
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NONE
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Returns:
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TRUE - If ExitBootService () has been called
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--*/
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{
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EFI_GUID Guid;
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SAL_RETURN_REGS ReturnReg;
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*((UINT64 *) &Guid) = EFI_EXTENDED_SAL_VIRTUAL_SERVICES_PROTOCOL_GUID_LO;
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*(((UINT64 *)&Guid) + 1) = EFI_EXTENDED_SAL_VIRTUAL_SERVICES_PROTOCOL_GUID_HI;
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ReturnReg = EsalCall (&Guid, IsEfiRuntimeFunctionId, 0, 0, 0, 0, 0, 0, 0);
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return (BOOLEAN) (ReturnReg.r9 == 1);
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}
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BOOLEAN
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EFIAPI
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EfiGoneVirtual (
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VOID
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)
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/*++
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Routine Description:
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Return TRUE if SetVirtualAddressMap () has been called
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Arguments:
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NONE
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Returns:
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TRUE - If SetVirtualAddressMap () has been called
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--*/
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{
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EFI_GUID Guid;
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SAL_RETURN_REGS ReturnReg;
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*((UINT64 *) &Guid) = EFI_EXTENDED_SAL_VIRTUAL_SERVICES_PROTOCOL_GUID_LO;
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*(((UINT64 *)&Guid) + 1) = EFI_EXTENDED_SAL_VIRTUAL_SERVICES_PROTOCOL_GUID_HI;
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ReturnReg = EsalCall (&Guid, IsVirtualFunctionId, 0, 0, 0, 0, 0, 0, 0);
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return (BOOLEAN) (ReturnReg.r9 == 1);
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}
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