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- /** @file
- ACPI Platform Driver
- Copyright (c) 2020, Intel Corporation. All rights reserved.<BR>
- SPDX-License-Identifier: BSD-2-Clause-Patent
- **/
- #include <Base.h>
- #include <Uefi.h>
- #include <IndustryStandard/Acpi.h>
- #include <Library/UefiLib.h>
- #include <Library/UefiBootServicesTableLib.h>
- #include <Library/UefiRuntimeServicesTableLib.h>
- #include <Library/DebugLib.h>
- #include <Library/BaseMemoryLib.h>
- #include <Library/IoLib.h>
- #include <Library/PcdLib.h>
- #include <Library/PciLib.h>
- #include <Library/BoardAcpiTableLib.h>
- #include <Library/MemoryAllocationLib.h>
- #include <Library/AslUpdateLib.h>
- #include <Protocol/GlobalNvsArea.h>
- #include <Protocol/FirmwareVolume2.h>
- #include <Protocol/AcpiTable.h>
- GLOBAL_REMOVE_IF_UNREFERENCED EFI_GLOBAL_NVS_AREA_PROTOCOL mGlobalNvsArea;
- /**
- @brief
- Global NVS initialize.
- @param[in] GlobalNvs - Pointer of Global NVS area
- @retval EFI_SUCCESS - Allocate Global NVS completed.
- @retval EFI_OUT_OF_RESOURCES - Failed to allocate required page for GNVS.
- **/
- EFI_STATUS
- EFIAPI
- AcpiGnvsInit (
- IN OUT VOID **GlobalNvs
- );
- //
- // Function implementations
- //
- /**
- 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[in] Protocol The protocol to find.
- @param[in] Instance Return pointer to the first instance of the protocol.
- @param[in] Type TRUE if the desired protocol is a FV protocol.
- @retval EFI_SUCCESS The function completed successfully.
- @retval EFI_NOT_FOUND The protocol could not be located.
- @retval EFI_OUT_OF_RESOURCES There are not enough resources to find the protocol.
- **/
- EFI_STATUS
- LocateSupportProtocol (
- IN EFI_GUID *Protocol,
- IN EFI_GUID *gEfiAcpiMultiTableStorageGuid,
- OUT VOID **Instance,
- IN BOOLEAN Type
- )
- {
- EFI_STATUS Status;
- EFI_HANDLE *HandleBuffer;
- UINTN NumberOfHandles;
- EFI_FV_FILETYPE FileType;
- UINT32 FvStatus;
- EFI_FV_FILE_ATTRIBUTES Attributes;
- UINTN Size;
- UINTN Index;
- //
- // Locate protocol.
- //
- Status = gBS->LocateHandleBuffer (
- ByProtocol,
- Protocol,
- 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],
- Protocol,
- Instance
- );
- ASSERT_EFI_ERROR (Status);
- if (!Type) {
- //
- // Not looking for the FV protocol, so find the first instance of the
- // protocol. There should not be any errors because our handle buffer
- // should always contain at least one or LocateHandleBuffer would have
- // returned not found.
- //
- break;
- }
- //
- // See if it has the ACPI storage file
- //
- Size = 0;
- FvStatus = 0;
- Status = ((EFI_FIRMWARE_VOLUME2_PROTOCOL *) (*Instance))->ReadFile (
- *Instance,
- gEfiAcpiMultiTableStorageGuid,
- NULL,
- &Size,
- &FileType,
- &Attributes,
- &FvStatus
- );
- //
- // If we found it, then we are done
- //
- if (Status == EFI_SUCCESS) {
- 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
- //
- FreePool (HandleBuffer);
- return Status;
- }
- EFI_STATUS
- PublishAcpiTablesFromFv (
- IN EFI_GUID *gEfiAcpiMultiTableStorageGuid
- )
- {
- EFI_STATUS Status;
- EFI_FIRMWARE_VOLUME2_PROTOCOL *FwVol;
- EFI_ACPI_COMMON_HEADER *CurrentTable;
- UINT32 FvStatus;
- UINTN Size;
- UINTN TableHandle;
- INTN Instance;
- EFI_ACPI_TABLE_PROTOCOL *AcpiTable;
- Instance = 0;
- TableHandle = 0;
- CurrentTable = NULL;
- FwVol = NULL;
- //
- // Find the AcpiSupport protocol
- //
- Status = LocateSupportProtocol (
- &gEfiAcpiTableProtocolGuid,
- gEfiAcpiMultiTableStorageGuid,
- (VOID **) &AcpiTable,
- FALSE
- );
- ASSERT_EFI_ERROR (Status);
- //
- // Locate the firmware volume protocol
- //
- Status = LocateSupportProtocol (
- &gEfiFirmwareVolume2ProtocolGuid,
- gEfiAcpiMultiTableStorageGuid,
- (VOID **) &FwVol,
- TRUE
- );
- //
- // Read tables from the storage file.
- //
- while (Status == EFI_SUCCESS) {
- Status = FwVol->ReadSection (
- FwVol,
- gEfiAcpiMultiTableStorageGuid,
- EFI_SECTION_RAW,
- Instance,
- (VOID **) &CurrentTable,
- &Size,
- &FvStatus
- );
- if (!EFI_ERROR (Status)) {
- //
- // Add the table
- //
- TableHandle = 0;
- Status = AcpiTable->InstallAcpiTable (
- AcpiTable,
- CurrentTable,
- CurrentTable->Length,
- &TableHandle
- );
- ASSERT_EFI_ERROR (Status);
- //
- // Increment the instance
- //
- Instance++;
- CurrentTable = NULL;
- }
- }
- //
- // Finished
- //
- return EFI_SUCCESS;
- }
- /**
- ACPI Platform driver installation function.
- @param[in] ImageHandle Handle for this drivers loaded image protocol.
- @param[in] SystemTable EFI system table.
- @retval EFI_SUCCESS The driver installed without error.
- @retval EFI_ABORTED The driver encountered an error and could not complete installation of
- the ACPI tables.
- **/
- EFI_STATUS
- EFIAPI
- InstallAcpiBoard (
- IN EFI_HANDLE ImageHandle,
- IN EFI_SYSTEM_TABLE *SystemTable
- )
- {
- EFI_STATUS Status;
- EFI_HANDLE Handle;
- AcpiGnvsInit((VOID **) &mGlobalNvsArea.Area);
- //
- // This PCD set must be done before PublishAcpiTablesFromFv.
- // The PCD data will be used there.
- //
- PcdSet64S (PcdAcpiGnvsAddress, (UINT64)(UINTN)mGlobalNvsArea.Area);
- //
- // Platform ACPI Tables
- //
- PublishAcpiTablesFromFv (&gEfiCallerIdGuid);
- //
- // This protocol publish must be done after PublishAcpiTablesFromFv.
- // The NVS data is be updated there.
- //
- Handle = NULL;
- Status = gBS->InstallMultipleProtocolInterfaces (
- &Handle,
- &gEfiGlobalNvsAreaProtocolGuid,
- &mGlobalNvsArea,
- NULL
- );
- ASSERT_EFI_ERROR (Status);
- return EFI_SUCCESS;
- }
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