diff options
| author | jljusten <jljusten@6f19259b-4bc3-4df7-8a09-765794883524> | 2012-05-30 23:15:00 +0000 |
|---|---|---|
| committer | jljusten <jljusten@6f19259b-4bc3-4df7-8a09-765794883524> | 2012-05-30 23:15:00 +0000 |
| commit | 7d2bd1505b93135947045e24b6a1313799d44738 (patch) | |
| tree | b088e9be78417e38868e367a3c59fc643b427507 /OvmfPkg/AcpiPlatformDxe | |
| parent | f1ec65ba24e1c7ca07c971dd737932c756f5780d (diff) | |
| download | edk2-platforms-7d2bd1505b93135947045e24b6a1313799d44738.tar.xz | |
OvmfPkg: Add AcpiPlatformDxe
This driver is currently a direct copy of
MdeModulePkg/Universal/Acpi/AcpiPlatformDxe.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13384 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'OvmfPkg/AcpiPlatformDxe')
| -rw-r--r-- | OvmfPkg/AcpiPlatformDxe/AcpiPlatform.c | 260 | ||||
| -rw-r--r-- | OvmfPkg/AcpiPlatformDxe/AcpiPlatformDxe.inf | 53 |
2 files changed, 313 insertions, 0 deletions
diff --git a/OvmfPkg/AcpiPlatformDxe/AcpiPlatform.c b/OvmfPkg/AcpiPlatformDxe/AcpiPlatform.c new file mode 100644 index 0000000000..44bdd94fa8 --- /dev/null +++ b/OvmfPkg/AcpiPlatformDxe/AcpiPlatform.c @@ -0,0 +1,260 @@ +/** @file
+ Sample ACPI Platform Driver
+
+ Copyright (c) 2008 - 2011, Intel Corporation. All rights reserved.<BR>
+ 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 <PiDxe.h>
+
+#include <Protocol/AcpiTable.h>
+#include <Protocol/FirmwareVolume2.h>
+
+#include <Library/BaseLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/DebugLib.h>
+#include <Library/PcdLib.h>
+
+#include <IndustryStandard/Acpi.h>
+
+/**
+ Locate the first instance of a protocol. If the protocol requested is an
+ FV protocol, then it will return the first FV that contains the ACPI table
+ storage file.
+
+ @param Instance Return pointer to the first instance of the protocol
+
+ @return EFI_SUCCESS The function completed successfully.
+ @return EFI_NOT_FOUND The protocol could not be located.
+ @return EFI_OUT_OF_RESOURCES There are not enough resources to find the protocol.
+
+**/
+EFI_STATUS
+LocateFvInstanceWithTables (
+ OUT EFI_FIRMWARE_VOLUME2_PROTOCOL **Instance
+ )
+{
+ EFI_STATUS Status;
+ EFI_HANDLE *HandleBuffer;
+ UINTN NumberOfHandles;
+ EFI_FV_FILETYPE FileType;
+ UINT32 FvStatus;
+ EFI_FV_FILE_ATTRIBUTES Attributes;
+ UINTN Size;
+ UINTN Index;
+ EFI_FIRMWARE_VOLUME2_PROTOCOL *FvInstance;
+
+ FvStatus = 0;
+
+ //
+ // Locate protocol.
+ //
+ Status = gBS->LocateHandleBuffer (
+ ByProtocol,
+ &gEfiFirmwareVolume2ProtocolGuid,
+ NULL,
+ &NumberOfHandles,
+ &HandleBuffer
+ );
+ if (EFI_ERROR (Status)) {
+ //
+ // Defined errors at this time are not found and out of resources.
+ //
+ return Status;
+ }
+
+
+
+ //
+ // Looking for FV with ACPI storage file
+ //
+
+ for (Index = 0; Index < NumberOfHandles; Index++) {
+ //
+ // Get the protocol on this handle
+ // This should not fail because of LocateHandleBuffer
+ //
+ Status = gBS->HandleProtocol (
+ HandleBuffer[Index],
+ &gEfiFirmwareVolume2ProtocolGuid,
+ (VOID**) &FvInstance
+ );
+ ASSERT_EFI_ERROR (Status);
+
+ //
+ // See if it has the ACPI storage file
+ //
+ Status = FvInstance->ReadFile (
+ FvInstance,
+ (EFI_GUID*)PcdGetPtr (PcdAcpiTableStorageFile),
+ NULL,
+ &Size,
+ &FileType,
+ &Attributes,
+ &FvStatus
+ );
+
+ //
+ // If we found it, then we are done
+ //
+ if (Status == EFI_SUCCESS) {
+ *Instance = FvInstance;
+ break;
+ }
+ }
+
+ //
+ // Our exit status is determined by the success of the previous operations
+ // If the protocol was found, Instance already points to it.
+ //
+
+ //
+ // Free any allocated buffers
+ //
+ gBS->FreePool (HandleBuffer);
+
+ return Status;
+}
+
+
+/**
+ This function calculates and updates an UINT8 checksum.
+
+ @param Buffer Pointer to buffer to checksum
+ @param Size Number of bytes to checksum
+
+**/
+VOID
+AcpiPlatformChecksum (
+ IN UINT8 *Buffer,
+ IN UINTN Size
+ )
+{
+ UINTN ChecksumOffset;
+
+ ChecksumOffset = OFFSET_OF (EFI_ACPI_DESCRIPTION_HEADER, Checksum);
+
+ //
+ // Set checksum to 0 first
+ //
+ Buffer[ChecksumOffset] = 0;
+
+ //
+ // Update checksum value
+ //
+ Buffer[ChecksumOffset] = CalculateCheckSum8(Buffer, Size);
+}
+
+
+/**
+ Entrypoint of Acpi Platform driver.
+
+ @param ImageHandle
+ @param SystemTable
+
+ @return EFI_SUCCESS
+ @return EFI_LOAD_ERROR
+ @return EFI_OUT_OF_RESOURCES
+
+**/
+EFI_STATUS
+EFIAPI
+AcpiPlatformEntryPoint (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+{
+ EFI_STATUS Status;
+ EFI_ACPI_TABLE_PROTOCOL *AcpiTable;
+ EFI_FIRMWARE_VOLUME2_PROTOCOL *FwVol;
+ INTN Instance;
+ EFI_ACPI_COMMON_HEADER *CurrentTable;
+ UINTN TableHandle;
+ UINT32 FvStatus;
+ UINTN TableSize;
+ UINTN Size;
+
+ Instance = 0;
+ CurrentTable = NULL;
+ TableHandle = 0;
+
+ //
+ // Find the AcpiTable protocol
+ //
+ Status = gBS->LocateProtocol (&gEfiAcpiTableProtocolGuid, NULL, (VOID**)&AcpiTable);
+ if (EFI_ERROR (Status)) {
+ return EFI_ABORTED;
+ }
+
+ //
+ // Locate the firmware volume protocol
+ //
+ Status = LocateFvInstanceWithTables (&FwVol);
+ if (EFI_ERROR (Status)) {
+ return EFI_ABORTED;
+ }
+ //
+ // Read tables from the storage file.
+ //
+ while (Status == EFI_SUCCESS) {
+
+ Status = FwVol->ReadSection (
+ FwVol,
+ (EFI_GUID*)PcdGetPtr (PcdAcpiTableStorageFile),
+ EFI_SECTION_RAW,
+ Instance,
+ (VOID**) &CurrentTable,
+ &Size,
+ &FvStatus
+ );
+ if (!EFI_ERROR(Status)) {
+ //
+ // Add the table
+ //
+ TableHandle = 0;
+
+ TableSize = ((EFI_ACPI_DESCRIPTION_HEADER *) CurrentTable)->Length;
+ ASSERT (Size >= TableSize);
+
+ //
+ // Checksum ACPI table
+ //
+ AcpiPlatformChecksum ((UINT8*)CurrentTable, TableSize);
+
+ //
+ // Install ACPI table
+ //
+ Status = AcpiTable->InstallAcpiTable (
+ AcpiTable,
+ CurrentTable,
+ TableSize,
+ &TableHandle
+ );
+
+ //
+ // Free memory allocated by ReadSection
+ //
+ gBS->FreePool (CurrentTable);
+
+ if (EFI_ERROR(Status)) {
+ return EFI_ABORTED;
+ }
+
+ //
+ // Increment the instance
+ //
+ Instance++;
+ CurrentTable = NULL;
+ }
+ }
+
+ return EFI_SUCCESS;
+}
+
diff --git a/OvmfPkg/AcpiPlatformDxe/AcpiPlatformDxe.inf b/OvmfPkg/AcpiPlatformDxe/AcpiPlatformDxe.inf new file mode 100644 index 0000000000..1034a0ae1f --- /dev/null +++ b/OvmfPkg/AcpiPlatformDxe/AcpiPlatformDxe.inf @@ -0,0 +1,53 @@ +## @file
+# Sample ACPI Platform Driver
+#
+# Copyright (c) 2008 - 2010, Intel Corporation. All rights reserved.<BR>
+# 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.
+#
+##
+
+[Defines]
+ INF_VERSION = 0x00010005
+ BASE_NAME = AcpiPlatform
+ FILE_GUID = cb933912-df8f-4305-b1f9-7b44fa11395c
+ MODULE_TYPE = DXE_DRIVER
+ VERSION_STRING = 1.0
+ ENTRY_POINT = AcpiPlatformEntryPoint
+
+#
+# The following information is for reference only and not required by the build tools.
+#
+# VALID_ARCHITECTURES = IA32 X64 IPF EBC
+#
+
+[Sources]
+ AcpiPlatform.c
+
+[Packages]
+ MdePkg/MdePkg.dec
+ MdeModulePkg/MdeModulePkg.dec
+
+[LibraryClasses]
+ UefiLib
+ DxeServicesLib
+ PcdLib
+ BaseMemoryLib
+ DebugLib
+ UefiBootServicesTableLib
+ UefiDriverEntryPoint
+
+[Protocols]
+ gEfiAcpiTableProtocolGuid # PROTOCOL ALWAYS_CONSUMED
+
+[Pcd]
+ gEfiMdeModulePkgTokenSpaceGuid.PcdAcpiTableStorageFile
+
+[Depex]
+ gEfiAcpiTableProtocolGuid
+
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