mirror of https://github.com/acidanthera/audk.git
232 lines
4.9 KiB
C
232 lines
4.9 KiB
C
/*++
|
|
|
|
Copyright (c) 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
|
|
|
|
--*/
|
|
|
|
#include <RuntimeLibInternal.h>
|
|
|
|
//
|
|
// Driver Lib Module Globals
|
|
//
|
|
static EFI_EVENT mEfiVirtualNotifyEvent;
|
|
EFI_RUNTIME_SERVICES *mRT;
|
|
|
|
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
|
|
|
|
--*/
|
|
{
|
|
if (EfiAtRuntime()) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
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
|
|
//
|
|
EfiConvertPointer (0, (VOID **) &mRT);
|
|
}
|
|
|
|
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 SetVirtualAddressMap () notify function
|
|
//
|
|
if (_gDriverSetVirtualAddressMapEvent[0] != NULL) {
|
|
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 (
|
|
IN EFI_HANDLE ImageHandle,
|
|
IN EFI_SYSTEM_TABLE *SystemTable
|
|
)
|
|
/*++
|
|
|
|
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 SetVirtualAddressMap () notify function
|
|
//
|
|
if (_gDriverSetVirtualAddressMapEvent[0] != NULL) {
|
|
Status = gBS->CloseEvent (mEfiVirtualNotifyEvent);
|
|
ASSERT_EFI_ERROR (Status);
|
|
}
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
BOOLEAN
|
|
EFIAPI
|
|
EfiAtRuntime (
|
|
VOID
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
Return TRUE if ExitBootService () has been called
|
|
|
|
Arguments:
|
|
NONE
|
|
|
|
Returns:
|
|
TRUE - If ExitBootService () has been called
|
|
|
|
--*/
|
|
{
|
|
EFI_GUID Guid = EFI_EXTENDED_SAL_VIRTUAL_SERVICES_PROTOCOL_GUID;
|
|
SAL_RETURN_REGS ReturnReg;
|
|
|
|
ReturnReg = EfiCallEsalService (&Guid, IsEfiRuntime, 0, 0, 0, 0, 0, 0, 0);
|
|
|
|
return (BOOLEAN) (ReturnReg.r9 == 1);
|
|
}
|
|
|
|
BOOLEAN
|
|
EFIAPI
|
|
EfiGoneVirtual (
|
|
VOID
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
Return TRUE if SetVirtualAddressMap () has been called
|
|
|
|
Arguments:
|
|
NONE
|
|
|
|
Returns:
|
|
TRUE - If SetVirtualAddressMap () has been called
|
|
|
|
--*/
|
|
{
|
|
EFI_GUID Guid = EFI_EXTENDED_SAL_VIRTUAL_SERVICES_PROTOCOL_GUID;
|
|
SAL_RETURN_REGS ReturnReg;
|
|
|
|
ReturnReg = EfiCallEsalService (&Guid, IsVirtual, 0, 0, 0, 0, 0, 0, 0);
|
|
|
|
return (BOOLEAN) (ReturnReg.r9 == 1);
|
|
}
|
|
|