diff options
Diffstat (limited to 'Silicon/Hisilicon/Pv660/Drivers/UnInstallAcpiTableDxe/UnInstallAcpiTable.c')
| -rw-r--r-- | Silicon/Hisilicon/Pv660/Drivers/UnInstallAcpiTableDxe/UnInstallAcpiTable.c | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/Silicon/Hisilicon/Pv660/Drivers/UnInstallAcpiTableDxe/UnInstallAcpiTable.c b/Silicon/Hisilicon/Pv660/Drivers/UnInstallAcpiTableDxe/UnInstallAcpiTable.c new file mode 100644 index 0000000000..90adc25b9f --- /dev/null +++ b/Silicon/Hisilicon/Pv660/Drivers/UnInstallAcpiTableDxe/UnInstallAcpiTable.c @@ -0,0 +1,119 @@ +/** @file
+*
+* Copyright (c) 2015, Hisilicon Limited. All rights reserved.
+* Copyright (c) 2015, Linaro Limited. 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 <Pi/PiDxeCis.h>
+#include <Library/DebugLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/UefiRuntimeServicesTableLib.h>
+#include <Library/PrintLib.h>
+#include <Library/DxeServicesTableLib.h>
+#include <Protocol/AcpiSystemDescriptionTable.h>
+#include <Protocol/AcpiTable.h>
+#include <IndustryStandard/Acpi.h>
+#include <Uefi/UefiSpec.h>
+#include <Guid/Acpi.h>
+#include "UnInstallAcpiTable.h"
+
+#define EFI_ACPI_MAX_NUM_TABLES 20
+EFI_GUID gSataControlGuid = EFI_SATA_CONTROL_GUID;
+
+EFI_STATUS
+UnInstallSsdtTable (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable)
+{
+ EFI_STATUS Status;
+ EFI_ACPI_SDT_PROTOCOL *AcpiTableProtocol;
+ EFI_ACPI_SDT_HEADER *Table;
+ EFI_ACPI_TABLE_VERSION TableVersion;
+ UINTN TableKey;
+ UINTN i;
+ EFI_ACPI_TABLE_PROTOCOL *AcpiTable;
+ UINT8 DataPtr1 = 2;
+ UINTN DataPtr1Size;
+ UINT32 SsdtName;
+
+ DataPtr1Size = sizeof(DataPtr1);
+
+ Status = gRT->GetVariable (
+ SATA_ENABLE_FLAG,
+ &gSataControlGuid,
+ NULL,
+ &DataPtr1Size,
+ &DataPtr1
+ );
+ if (!EFI_ERROR (Status)) {
+ DEBUG((EFI_D_ERROR,"Get Variable ok\n"));
+
+ }
+
+ if (SATAENABLE == DataPtr1) {
+ Status = gBS->InstallProtocolInterface (
+ &ImageHandle,
+ &gSataEnableFlagProtocolGuid,
+ EFI_NATIVE_INTERFACE,
+ NULL
+ );
+ if (!EFI_ERROR (Status)) {
+ DEBUG((EFI_D_ERROR,"Install SataEnableFlag Protocol ok, %r\n",Status));
+
+ }
+ DEBUG((EFI_D_ERROR, "Current SataEnable Flag is Sata, try to uninstall Sas SSDT table\n"));
+ SsdtName = EFI_SAS_SIGNATURE;
+ }
+ else {
+ DEBUG((EFI_D_ERROR, "Current SataEnable Flag is Sas, try to uninstall Sata SSDT table\n"));
+ SsdtName = EFI_SATA_SIGNATURE;
+ }
+
+ //Locate AcpiTableProtocol
+ Status = gBS->LocateProtocol (&gEfiAcpiTableProtocolGuid, NULL, (VOID**)&AcpiTable);
+ if (EFI_ERROR (Status)) {
+ DEBUG((EFI_D_ERROR,"Unable to locate ACPI table protocol\n"));
+ return EFI_ABORTED;
+ }
+ //
+ // Find the Acpi Sdt protocol
+ Status = gBS->LocateProtocol(&gEfiAcpiSdtProtocolGuid, NULL, (VOID**) &AcpiTableProtocol);
+ if (EFI_ERROR(Status)) {
+ DEBUG((EFI_D_ERROR,"Unable to locate ACPI Sdt protocol\n"));
+ return EFI_ABORTED;
+ }
+
+ //
+ // Search for SSDT Table and delete the matched SSDT table
+ for (i = 0; i < EFI_ACPI_MAX_NUM_TABLES; i++) {
+ Status = AcpiTableProtocol->GetAcpiTable(i, &Table, &TableVersion, &TableKey);
+ if (EFI_ERROR(Status))
+ break;
+ if (Table->Signature == EFI_ACPI_3_0_SECONDARY_SYSTEM_DESCRIPTION_TABLE_SIGNATURE) {
+
+ if(*(UINT64*)Table->OemTableId == SsdtName) {
+ Status = AcpiTable->UninstallAcpiTable (AcpiTable, TableKey);
+ if (!EFI_ERROR (Status)) {
+ DEBUG((EFI_D_ERROR,"Successfully remove the SSDT table\n"));
+ return EFI_SUCCESS;
+ }
+ }
+ }
+
+ }
+ return EFI_SUCCESS;
+
+}
+
+
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