mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-12-31 17:37:42 +01:00
82 lines
2.2 KiB
C
Executable File
82 lines
2.2 KiB
C
Executable File
/** @file
|
|
Copyright (C) 2016, The HermitCrabs Lab. All rights reserved.
|
|
|
|
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 <Uefi.h>
|
|
|
|
#include <IndustryStandard/Pci.h>
|
|
|
|
#include <Guid/ApplePlatformInfo.h>
|
|
|
|
#include <Protocol/LegacyRegion.h>
|
|
#include <Protocol/PciIo.h>
|
|
|
|
#include <Library/BaseLib.h>
|
|
#include <Library/BaseMemoryLib.h>
|
|
#include <Library/DebugLib.h>
|
|
#include <Library/MemoryAllocationLib.h>
|
|
#include <Library/OcMiscLib.h>
|
|
#include <Library/OcStringLib.h>
|
|
#include <Library/UefiBootServicesTableLib.h>
|
|
#include <Library/UefiLib.h>
|
|
#include <Library/UefiRuntimeServicesTableLib.h>
|
|
|
|
/** Unlock the legacy region specified to enable modification.
|
|
|
|
@param[in] LegacyAddress The address of the region to unlock.
|
|
@param[in] LegacyLength The size of the region to unlock.
|
|
|
|
@retval EFI_SUCCESS The region was unlocked successfully.
|
|
**/
|
|
EFI_STATUS
|
|
LegacyRegionUnlock (
|
|
IN UINT32 LegacyAddress,
|
|
IN UINT32 LegacyLength
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
|
|
EFI_LEGACY_REGION_PROTOCOL *LegacyRegionProtocol;
|
|
UINT32 Granularity;
|
|
|
|
Status = gBS->LocateProtocol (
|
|
&gEfiLegacyRegionProtocolGuid,
|
|
NULL,
|
|
(VOID **) &LegacyRegionProtocol
|
|
);
|
|
|
|
if (!EFI_ERROR(Status)) {
|
|
//
|
|
// Unlock Region Using LegacyRegionProtocol
|
|
//
|
|
Granularity = 0;
|
|
Status = LegacyRegionProtocol->UnLock (
|
|
LegacyRegionProtocol,
|
|
LegacyAddress,
|
|
LegacyLength,
|
|
&Granularity
|
|
);
|
|
|
|
DEBUG ((
|
|
DEBUG_INFO,
|
|
"Unlock LegacyRegion %0X-%0X - %r\n",
|
|
LegacyAddress,
|
|
(LegacyAddress + (LegacyLength - 1)),
|
|
Status
|
|
));
|
|
}
|
|
|
|
return Status;
|
|
}
|
|
|