diff options
Diffstat (limited to 'OvmfPkg/Library/PlatformBootManagerLibGrub/BdsPlatform.c')
| -rw-r--r-- | OvmfPkg/Library/PlatformBootManagerLibGrub/BdsPlatform.c | 1604 |
1 files changed, 0 insertions, 1604 deletions
diff --git a/OvmfPkg/Library/PlatformBootManagerLibGrub/BdsPlatform.c b/OvmfPkg/Library/PlatformBootManagerLibGrub/BdsPlatform.c deleted file mode 100644 index df8e2fe157..0000000000 --- a/OvmfPkg/Library/PlatformBootManagerLibGrub/BdsPlatform.c +++ /dev/null @@ -1,1604 +0,0 @@ -/** @file
- Platform BDS customizations.
-
- Copyright (C) 2020 James Bottomley, IBM Corporation.
- Copyright (c) 2004 - 2019, Intel Corporation. All rights reserved.<BR>
- SPDX-License-Identifier: BSD-2-Clause-Patent
-
-**/
-
-#include "BdsPlatform.h"
-#include <Guid/RootBridgesConnectedEventGroup.h>
-#include <Protocol/FirmwareVolume2.h>
-#include <Library/PlatformBmPrintScLib.h>
-#include <Library/Tcg2PhysicalPresenceLib.h>
-
-//
-// Global data
-//
-
-VOID *mEfiDevPathNotifyReg;
-EFI_EVENT mEfiDevPathEvent;
-UINT16 mHostBridgeDevId;
-
-//
-// Table of host IRQs matching PCI IRQs A-D
-// (for configuring PCI Interrupt Line register)
-//
-CONST UINT8 PciHostIrqs[] = {
- 0x0a, 0x0a, 0x0b, 0x0b
-};
-
-//
-// Type definitions
-//
-
-typedef
-EFI_STATUS
-(EFIAPI *PROTOCOL_INSTANCE_CALLBACK)(
- IN EFI_HANDLE Handle,
- IN VOID *Instance,
- IN VOID *Context
- );
-
-/**
- @param[in] Handle - Handle of PCI device instance
- @param[in] PciIo - PCI IO protocol instance
- @param[in] Pci - PCI Header register block
-**/
-typedef
-EFI_STATUS
-(EFIAPI *VISIT_PCI_INSTANCE_CALLBACK)(
- IN EFI_HANDLE Handle,
- IN EFI_PCI_IO_PROTOCOL *PciIo,
- IN PCI_TYPE00 *Pci
- );
-
-//
-// Function prototypes
-//
-
-EFI_STATUS
-VisitAllInstancesOfProtocol (
- IN EFI_GUID *Id,
- IN PROTOCOL_INSTANCE_CALLBACK CallBackFunction,
- IN VOID *Context
- );
-
-EFI_STATUS
-VisitAllPciInstancesOfProtocol (
- IN VISIT_PCI_INSTANCE_CALLBACK CallBackFunction
- );
-
-VOID
-InstallDevicePathCallback (
- VOID
- );
-
-VOID
-PlatformRegisterFvBootOption (
- EFI_GUID *FileGuid,
- CHAR16 *Description,
- UINT32 Attributes
- )
-{
- EFI_STATUS Status;
- INTN OptionIndex;
- EFI_BOOT_MANAGER_LOAD_OPTION NewOption;
- EFI_BOOT_MANAGER_LOAD_OPTION *BootOptions;
- UINTN BootOptionCount;
- MEDIA_FW_VOL_FILEPATH_DEVICE_PATH FileNode;
- EFI_LOADED_IMAGE_PROTOCOL *LoadedImage;
- EFI_DEVICE_PATH_PROTOCOL *DevicePath;
-
- Status = gBS->HandleProtocol (
- gImageHandle,
- &gEfiLoadedImageProtocolGuid,
- (VOID **)&LoadedImage
- );
- ASSERT_EFI_ERROR (Status);
-
- EfiInitializeFwVolDevicepathNode (&FileNode, FileGuid);
- DevicePath = DevicePathFromHandle (LoadedImage->DeviceHandle);
- ASSERT (DevicePath != NULL);
- DevicePath = AppendDevicePathNode (
- DevicePath,
- (EFI_DEVICE_PATH_PROTOCOL *)&FileNode
- );
- ASSERT (DevicePath != NULL);
-
- Status = EfiBootManagerInitializeLoadOption (
- &NewOption,
- LoadOptionNumberUnassigned,
- LoadOptionTypeBoot,
- Attributes,
- Description,
- DevicePath,
- NULL,
- 0
- );
- ASSERT_EFI_ERROR (Status);
- FreePool (DevicePath);
-
- BootOptions = EfiBootManagerGetLoadOptions (
- &BootOptionCount,
- LoadOptionTypeBoot
- );
-
- OptionIndex = EfiBootManagerFindLoadOption (
- &NewOption,
- BootOptions,
- BootOptionCount
- );
-
- if (OptionIndex == -1) {
- Status = EfiBootManagerAddLoadOptionVariable (&NewOption, MAX_UINTN);
- ASSERT_EFI_ERROR (Status);
- }
-
- EfiBootManagerFreeLoadOption (&NewOption);
- EfiBootManagerFreeLoadOptions (BootOptions, BootOptionCount);
-}
-
-/**
- Remove all MemoryMapped(...)/FvFile(...) and Fv(...)/FvFile(...) boot options
- whose device paths do not resolve exactly to an FvFile in the system.
-
- Also strip out every boot option that is not an FvFile, meaning the system
- can only boot either the Grub or (if built) the shell.
-
- This removes any boot options that point to binaries built into the firmware
- and have become stale due to any of the following:
- - DXEFV's base address or size changed (historical),
- - DXEFV's FvNameGuid changed,
- - the FILE_GUID of the pointed-to binary changed,
- - the referenced binary is no longer built into the firmware.
-
- EfiBootManagerFindLoadOption() used in PlatformRegisterFvBootOption() only
- avoids exact duplicates.
-**/
-VOID
-RemoveStaleFvFileOptions (
- VOID
- )
-{
- EFI_BOOT_MANAGER_LOAD_OPTION *BootOptions;
- UINTN BootOptionCount;
- UINTN Index;
-
- BootOptions = EfiBootManagerGetLoadOptions (
- &BootOptionCount,
- LoadOptionTypeBoot
- );
-
- for (Index = 0; Index < BootOptionCount; ++Index) {
- EFI_DEVICE_PATH_PROTOCOL *Node1, *Node2, *SearchNode;
- EFI_STATUS Status;
- EFI_HANDLE FvHandle;
-
- //
- // If the device path starts with neither MemoryMapped(...) nor Fv(...),
- // then delete the boot option.
- //
- Node1 = BootOptions[Index].FilePath;
- if (!((DevicePathType (Node1) == HARDWARE_DEVICE_PATH) &&
- (DevicePathSubType (Node1) == HW_MEMMAP_DP)) &&
- !((DevicePathType (Node1) == MEDIA_DEVICE_PATH) &&
- (DevicePathSubType (Node1) == MEDIA_PIWG_FW_VOL_DP)))
- {
- EfiBootManagerDeleteLoadOptionVariable (
- BootOptions[Index].OptionNumber,
- LoadOptionTypeBoot
- );
- continue;
- }
-
- //
- // If the second device path node is not FvFile(...), then delete the boot
- // option.
- //
- Node2 = NextDevicePathNode (Node1);
- if ((DevicePathType (Node2) != MEDIA_DEVICE_PATH) ||
- (DevicePathSubType (Node2) != MEDIA_PIWG_FW_FILE_DP))
- {
- EfiBootManagerDeleteLoadOptionVariable (
- BootOptions[Index].OptionNumber,
- LoadOptionTypeBoot
- );
- continue;
- }
-
- //
- // Locate the Firmware Volume2 protocol instance that is denoted by the
- // boot option. If this lookup fails (i.e., the boot option references a
- // firmware volume that doesn't exist), then we'll proceed to delete the
- // boot option.
- //
- SearchNode = Node1;
- Status = gBS->LocateDevicePath (
- &gEfiFirmwareVolume2ProtocolGuid,
- &SearchNode,
- &FvHandle
- );
-
- if (!EFI_ERROR (Status)) {
- //
- // The firmware volume was found; now let's see if it contains the FvFile
- // identified by GUID.
- //
- EFI_FIRMWARE_VOLUME2_PROTOCOL *FvProtocol;
- MEDIA_FW_VOL_FILEPATH_DEVICE_PATH *FvFileNode;
- UINTN BufferSize;
- EFI_FV_FILETYPE FoundType;
- EFI_FV_FILE_ATTRIBUTES FileAttributes;
- UINT32 AuthenticationStatus;
-
- Status = gBS->HandleProtocol (
- FvHandle,
- &gEfiFirmwareVolume2ProtocolGuid,
- (VOID **)&FvProtocol
- );
- ASSERT_EFI_ERROR (Status);
-
- FvFileNode = (MEDIA_FW_VOL_FILEPATH_DEVICE_PATH *)Node2;
- //
- // Buffer==NULL means we request metadata only: BufferSize, FoundType,
- // FileAttributes.
- //
- Status = FvProtocol->ReadFile (
- FvProtocol,
- &FvFileNode->FvFileName, // NameGuid
- NULL, // Buffer
- &BufferSize,
- &FoundType,
- &FileAttributes,
- &AuthenticationStatus
- );
- if (!EFI_ERROR (Status)) {
- //
- // The FvFile was found. Keep the boot option.
- //
- continue;
- }
- }
-
- //
- // Delete the boot option.
- //
- Status = EfiBootManagerDeleteLoadOptionVariable (
- BootOptions[Index].OptionNumber,
- LoadOptionTypeBoot
- );
- DEBUG_CODE_BEGIN ();
- CHAR16 *DevicePathString;
-
- DevicePathString = ConvertDevicePathToText (
- BootOptions[Index].FilePath,
- FALSE,
- FALSE
- );
- DEBUG ((
- EFI_ERROR (Status) ? DEBUG_WARN : DEBUG_VERBOSE,
- "%a: removing stale Boot#%04x %s: %r\n",
- __func__,
- (UINT32)BootOptions[Index].OptionNumber,
- DevicePathString == NULL ? L"<unavailable>" : DevicePathString,
- Status
- ));
- if (DevicePathString != NULL) {
- FreePool (DevicePathString);
- }
-
- DEBUG_CODE_END ();
- }
-
- EfiBootManagerFreeLoadOptions (BootOptions, BootOptionCount);
-}
-
-EFI_STATUS
-EFIAPI
-ConnectRootBridge (
- IN EFI_HANDLE RootBridgeHandle,
- IN VOID *Instance,
- IN VOID *Context
- );
-
-STATIC
-EFI_STATUS
-EFIAPI
-ConnectVirtioPciRng (
- IN EFI_HANDLE Handle,
- IN VOID *Instance,
- IN VOID *Context
- );
-
-//
-// BDS Platform Functions
-//
-
-/**
- Do the platform init, can be customized by OEM/IBV
-
- Possible things that can be done in PlatformBootManagerBeforeConsole:
-
- > Update console variable: 1. include hot-plug devices;
- > 2. Clear ConIn and add SOL for AMT
- > Register new Driver#### or Boot####
- > Register new Key####: e.g.: F12
- > Signal ReadyToLock event
- > Authentication action: 1. connect Auth devices;
- > 2. Identify auto logon user.
-**/
-VOID
-EFIAPI
-PlatformBootManagerBeforeConsole (
- VOID
- )
-{
- EFI_HANDLE Handle;
- EFI_STATUS Status;
- UINT16 FrontPageTimeout;
-
- FrontPageTimeout = 0;
-
- DEBUG ((DEBUG_INFO, "PlatformBootManagerBeforeConsole\n"));
- InstallDevicePathCallback ();
-
- VisitAllInstancesOfProtocol (
- &gEfiPciRootBridgeIoProtocolGuid,
- ConnectRootBridge,
- NULL
- );
-
- //
- // Signal the ACPI platform driver that it can download QEMU ACPI tables.
- //
- EfiEventGroupSignal (&gRootBridgesConnectedEventGroupGuid);
-
- //
- // We can't signal End-of-Dxe earlier than this. Namely, End-of-Dxe triggers
- // the preparation of S3 system information. That logic has a hard dependency
- // on the presence of the FACS ACPI table. Since our ACPI tables are only
- // installed after PCI enumeration completes, we must not trigger the S3 save
- // earlier, hence we can't signal End-of-Dxe earlier.
- //
- EfiEventGroupSignal (&gEfiEndOfDxeEventGroupGuid);
-
- // We need to connect all trusted consoles for TCG PP. Here we treat all
- // consoles in OVMF to be trusted consoles.
- PlatformInitializeConsole (gPlatformConsole);
-
- //
- // Process TPM PPI request
- //
- Tcg2PhysicalPresenceLibProcessRequest (NULL);
-
- //
- // Prevent further changes to LockBoxes or SMRAM.
- // Any TPM 2 Physical Presence Interface opcode must be handled before.
- //
- Handle = NULL;
- Status = gBS->InstallProtocolInterface (
- &Handle,
- &gEfiDxeSmmReadyToLockProtocolGuid,
- EFI_NATIVE_INTERFACE,
- NULL
- );
- ASSERT_EFI_ERROR (Status);
-
- //
- // Dispatch deferred images after EndOfDxe event and ReadyToLock
- // installation.
- //
- EfiBootManagerDispatchDeferredImages ();
-
- //
- // GPU passthrough only allows Console enablement after ROM image load
- //
- PlatformInitializeConsole (gPlatformConsole);
-
- Status = gRT->SetVariable (
- EFI_TIME_OUT_VARIABLE_NAME,
- &gEfiGlobalVariableGuid,
- (EFI_VARIABLE_NON_VOLATILE |
- EFI_VARIABLE_BOOTSERVICE_ACCESS |
- EFI_VARIABLE_RUNTIME_ACCESS),
- sizeof FrontPageTimeout,
- &FrontPageTimeout
- );
- //
- // Install both VIRTIO_DEVICE_PROTOCOL and (dependent) EFI_RNG_PROTOCOL
- // instances on Virtio PCI RNG devices.
- //
- VisitAllInstancesOfProtocol (
- &gEfiPciIoProtocolGuid,
- ConnectVirtioPciRng,
- NULL
- );
-}
-
-EFI_STATUS
-EFIAPI
-ConnectRootBridge (
- IN EFI_HANDLE RootBridgeHandle,
- IN VOID *Instance,
- IN VOID *Context
- )
-{
- EFI_STATUS Status;
-
- //
- // Make the PCI bus driver connect the root bridge, non-recursively. This
- // will produce a number of child handles with PciIo on them.
- //
- Status = gBS->ConnectController (
- RootBridgeHandle, // ControllerHandle
- NULL, // DriverImageHandle
- NULL, // RemainingDevicePath -- produce all
- // children
- FALSE // Recursive
- );
- return Status;
-}
-
-STATIC
-EFI_STATUS
-EFIAPI
-ConnectVirtioPciRng (
- IN EFI_HANDLE Handle,
- IN VOID *Instance,
- IN VOID *Context
- )
-{
- EFI_PCI_IO_PROTOCOL *PciIo;
- EFI_STATUS Status;
- UINT16 VendorId;
- UINT16 DeviceId;
- UINT8 RevisionId;
- BOOLEAN Virtio10;
- UINT16 SubsystemId;
-
- PciIo = Instance;
-
- //
- // Read and check VendorId.
- //
- Status = PciIo->Pci.Read (
- PciIo,
- EfiPciIoWidthUint16,
- PCI_VENDOR_ID_OFFSET,
- 1,
- &VendorId
- );
- if (EFI_ERROR (Status)) {
- goto Error;
- }
-
- if (VendorId != VIRTIO_VENDOR_ID) {
- return EFI_SUCCESS;
- }
-
- //
- // Read DeviceId and RevisionId.
- //
- Status = PciIo->Pci.Read (
- PciIo,
- EfiPciIoWidthUint16,
- PCI_DEVICE_ID_OFFSET,
- 1,
- &DeviceId
- );
- if (EFI_ERROR (Status)) {
- goto Error;
- }
-
- Status = PciIo->Pci.Read (
- PciIo,
- EfiPciIoWidthUint8,
- PCI_REVISION_ID_OFFSET,
- 1,
- &RevisionId
- );
- if (EFI_ERROR (Status)) {
- goto Error;
- }
-
- //
- // From DeviceId and RevisionId, determine whether the device is a
- // modern-only Virtio 1.0 device. In case of Virtio 1.0, DeviceId can
- // immediately be restricted to VIRTIO_SUBSYSTEM_ENTROPY_SOURCE, and
- // SubsystemId will only play a sanity-check role. Otherwise, DeviceId can
- // only be sanity-checked, and SubsystemId will decide.
- //
- if ((DeviceId == 0x1040 + VIRTIO_SUBSYSTEM_ENTROPY_SOURCE) &&
- (RevisionId >= 0x01))
- {
- Virtio10 = TRUE;
- } else if ((DeviceId >= 0x1000) && (DeviceId <= 0x103F) && (RevisionId == 0x00)) {
- Virtio10 = FALSE;
- } else {
- return EFI_SUCCESS;
- }
-
- //
- // Read and check SubsystemId as dictated by Virtio10.
- //
- Status = PciIo->Pci.Read (
- PciIo,
- EfiPciIoWidthUint16,
- PCI_SUBSYSTEM_ID_OFFSET,
- 1,
- &SubsystemId
- );
- if (EFI_ERROR (Status)) {
- goto Error;
- }
-
- if ((Virtio10 && (SubsystemId >= 0x40)) ||
- (!Virtio10 && (SubsystemId == VIRTIO_SUBSYSTEM_ENTROPY_SOURCE)))
- {
- Status = gBS->ConnectController (
- Handle, // ControllerHandle
- NULL, // DriverImageHandle -- connect all drivers
- NULL, // RemainingDevicePath -- produce all child handles
- FALSE // Recursive -- don't follow child handles
- );
- if (EFI_ERROR (Status)) {
- goto Error;
- }
- }
-
- return EFI_SUCCESS;
-
-Error:
- DEBUG ((DEBUG_ERROR, "%a: %r\n", __func__, Status));
- return Status;
-}
-
-/**
- Add IsaKeyboard to ConIn; add IsaSerial to ConOut, ConIn, ErrOut.
-
- @param[in] DeviceHandle Handle of the LPC Bridge device.
-
- @retval EFI_SUCCESS Console devices on the LPC bridge have been added to
- ConOut, ConIn, and ErrOut.
-
- @return Error codes, due to EFI_DEVICE_PATH_PROTOCOL missing
- from DeviceHandle.
-**/
-EFI_STATUS
-PrepareLpcBridgeDevicePath (
- IN EFI_HANDLE DeviceHandle
- )
-{
- EFI_STATUS Status;
- EFI_DEVICE_PATH_PROTOCOL *DevicePath;
- EFI_DEVICE_PATH_PROTOCOL *TempDevicePath;
- CHAR16 *DevPathStr;
-
- DevicePath = NULL;
- Status = gBS->HandleProtocol (
- DeviceHandle,
- &gEfiDevicePathProtocolGuid,
- (VOID *)&DevicePath
- );
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- TempDevicePath = DevicePath;
-
- //
- // Register Keyboard
- //
- DevicePath = AppendDevicePathNode (
- DevicePath,
- (EFI_DEVICE_PATH_PROTOCOL *)&gPnpPs2KeyboardDeviceNode
- );
-
- EfiBootManagerUpdateConsoleVariable (ConIn, DevicePath, NULL);
-
- //
- // Register COM1
- //
- DevicePath = TempDevicePath;
- gPnp16550ComPortDeviceNode.UID = 0;
-
- DevicePath = AppendDevicePathNode (
- DevicePath,
- (EFI_DEVICE_PATH_PROTOCOL *)&gPnp16550ComPortDeviceNode
- );
- DevicePath = AppendDevicePathNode (
- DevicePath,
- (EFI_DEVICE_PATH_PROTOCOL *)&gUartDeviceNode
- );
- DevicePath = AppendDevicePathNode (
- DevicePath,
- (EFI_DEVICE_PATH_PROTOCOL *)&gTerminalTypeDeviceNode
- );
-
- //
- // Print Device Path
- //
- DevPathStr = ConvertDevicePathToText (DevicePath, FALSE, FALSE);
- if (DevPathStr != NULL) {
- DEBUG ((
- DEBUG_INFO,
- "BdsPlatform.c+%d: COM%d DevPath: %s\n",
- DEBUG_LINE_NUMBER,
- gPnp16550ComPortDeviceNode.UID + 1,
- DevPathStr
- ));
- FreePool (DevPathStr);
- }
-
- EfiBootManagerUpdateConsoleVariable (ConOut, DevicePath, NULL);
- EfiBootManagerUpdateConsoleVariable (ConIn, DevicePath, NULL);
- EfiBootManagerUpdateConsoleVariable (ErrOut, DevicePath, NULL);
-
- //
- // Register COM2
- //
- DevicePath = TempDevicePath;
- gPnp16550ComPortDeviceNode.UID = 1;
-
- DevicePath = AppendDevicePathNode (
- DevicePath,
- (EFI_DEVICE_PATH_PROTOCOL *)&gPnp16550ComPortDeviceNode
- );
- DevicePath = AppendDevicePathNode (
- DevicePath,
- (EFI_DEVICE_PATH_PROTOCOL *)&gUartDeviceNode
- );
- DevicePath = AppendDevicePathNode (
- DevicePath,
- (EFI_DEVICE_PATH_PROTOCOL *)&gTerminalTypeDeviceNode
- );
-
- //
- // Print Device Path
- //
- DevPathStr = ConvertDevicePathToText (DevicePath, FALSE, FALSE);
- if (DevPathStr != NULL) {
- DEBUG ((
- DEBUG_INFO,
- "BdsPlatform.c+%d: COM%d DevPath: %s\n",
- DEBUG_LINE_NUMBER,
- gPnp16550ComPortDeviceNode.UID + 1,
- DevPathStr
- ));
- FreePool (DevPathStr);
- }
-
- EfiBootManagerUpdateConsoleVariable (ConOut, DevicePath, NULL);
- EfiBootManagerUpdateConsoleVariable (ConIn, DevicePath, NULL);
- EfiBootManagerUpdateConsoleVariable (ErrOut, DevicePath, NULL);
-
- return EFI_SUCCESS;
-}
-
-EFI_STATUS
-GetGopDevicePath (
- IN EFI_DEVICE_PATH_PROTOCOL *PciDevicePath,
- OUT EFI_DEVICE_PATH_PROTOCOL **GopDevicePath
- )
-{
- UINTN Index;
- EFI_STATUS Status;
- EFI_HANDLE PciDeviceHandle;
- EFI_DEVICE_PATH_PROTOCOL *TempDevicePath;
- EFI_DEVICE_PATH_PROTOCOL *TempPciDevicePath;
- UINTN GopHandleCount;
- EFI_HANDLE *GopHandleBuffer;
-
- if ((PciDevicePath == NULL) || (GopDevicePath == NULL)) {
- return EFI_INVALID_PARAMETER;
- }
-
- //
- // Initialize the GopDevicePath to be PciDevicePath
- //
- *GopDevicePath = PciDevicePath;
- TempPciDevicePath = PciDevicePath;
-
- Status = gBS->LocateDevicePath (
- &gEfiDevicePathProtocolGuid,
- &TempPciDevicePath,
- &PciDeviceHandle
- );
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- //
- // Try to connect this handle, so that GOP driver could start on this
- // device and create child handles with GraphicsOutput Protocol installed
- // on them, then we get device paths of these child handles and select
- // them as possible console device.
- //
- gBS->ConnectController (PciDeviceHandle, NULL, NULL, FALSE);
-
- Status = gBS->LocateHandleBuffer (
- ByProtocol,
- &gEfiGraphicsOutputProtocolGuid,
- NULL,
- &GopHandleCount,
- &GopHandleBuffer
- );
- if (!EFI_ERROR (Status)) {
- //
- // Add all the child handles as possible Console Device
- //
- for (Index = 0; Index < GopHandleCount; Index++) {
- Status = gBS->HandleProtocol (
- GopHandleBuffer[Index],
- &gEfiDevicePathProtocolGuid,
- (VOID *)&TempDevicePath
- );
- if (EFI_ERROR (Status)) {
- continue;
- }
-
- if (CompareMem (
- PciDevicePath,
- TempDevicePath,
- GetDevicePathSize (PciDevicePath) - END_DEVICE_PATH_LENGTH
- ) == 0)
- {
- //
- // In current implementation, we only enable one of the child handles
- // as console device, i.e. sotre one of the child handle's device
- // path to variable "ConOut"
- // In future, we could select all child handles to be console device
- //
-
- *GopDevicePath = TempDevicePath;
-
- //
- // Delete the PCI device's path that added by
- // GetPlugInPciVgaDevicePath(). Add the integrity GOP device path.
- //
- EfiBootManagerUpdateConsoleVariable (ConOutDev, NULL, PciDevicePath);
- EfiBootManagerUpdateConsoleVariable (ConOutDev, TempDevicePath, NULL);
- }
- }
-
- gBS->FreePool (GopHandleBuffer);
- }
-
- return EFI_SUCCESS;
-}
-
-/**
- Add PCI display to ConOut.
-
- @param[in] DeviceHandle Handle of the PCI display device.
-
- @retval EFI_SUCCESS The PCI display device has been added to ConOut.
-
- @return Error codes, due to EFI_DEVICE_PATH_PROTOCOL missing
- from DeviceHandle.
-**/
-EFI_STATUS
-PreparePciDisplayDevicePath (
- IN EFI_HANDLE DeviceHandle
- )
-{
- EFI_STATUS Status;
- EFI_DEVICE_PATH_PROTOCOL *DevicePath;
- EFI_DEVICE_PATH_PROTOCOL *GopDevicePath;
-
- DevicePath = NULL;
- GopDevicePath = NULL;
- Status = gBS->HandleProtocol (
- DeviceHandle,
- &gEfiDevicePathProtocolGuid,
- (VOID *)&DevicePath
- );
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- GetGopDevicePath (DevicePath, &GopDevicePath);
- DevicePath = GopDevicePath;
-
- EfiBootManagerUpdateConsoleVariable (ConOut, DevicePath, NULL);
-
- return EFI_SUCCESS;
-}
-
-/**
- Add PCI Serial to ConOut, ConIn, ErrOut.
-
- @param[in] DeviceHandle Handle of the PCI serial device.
-
- @retval EFI_SUCCESS The PCI serial device has been added to ConOut, ConIn,
- ErrOut.
-
- @return Error codes, due to EFI_DEVICE_PATH_PROTOCOL missing
- from DeviceHandle.
-**/
-EFI_STATUS
-PreparePciSerialDevicePath (
- IN EFI_HANDLE DeviceHandle
- )
-{
- EFI_STATUS Status;
- EFI_DEVICE_PATH_PROTOCOL *DevicePath;
-
- DevicePath = NULL;
- Status = gBS->HandleProtocol (
- DeviceHandle,
- &gEfiDevicePathProtocolGuid,
- (VOID *)&DevicePath
- );
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- DevicePath = AppendDevicePathNode (
- DevicePath,
- (EFI_DEVICE_PATH_PROTOCOL *)&gUartDeviceNode
- );
- DevicePath = AppendDevicePathNode (
- DevicePath,
- (EFI_DEVICE_PATH_PROTOCOL *)&gTerminalTypeDeviceNode
- );
-
- EfiBootManagerUpdateConsoleVariable (ConOut, DevicePath, NULL);
- EfiBootManagerUpdateConsoleVariable (ConIn, DevicePath, NULL);
- EfiBootManagerUpdateConsoleVariable (ErrOut, DevicePath, NULL);
-
- return EFI_SUCCESS;
-}
-
-EFI_STATUS
-VisitAllInstancesOfProtocol (
- IN EFI_GUID *Id,
- IN PROTOCOL_INSTANCE_CALLBACK CallBackFunction,
- IN VOID *Context
- )
-{
- EFI_STATUS Status;
- UINTN HandleCount;
- EFI_HANDLE *HandleBuffer;
- UINTN Index;
- VOID *Instance;
-
- //
- // Start to check all the PciIo to find all possible device
- //
- HandleCount = 0;
- HandleBuffer = NULL;
- Status = gBS->LocateHandleBuffer (
- ByProtocol,
- Id,
- NULL,
- &HandleCount,
- &HandleBuffer
- );
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- for (Index = 0; Index < HandleCount; Index++) {
- Status = gBS->HandleProtocol (HandleBuffer[Index], Id, &Instance);
- if (EFI_ERROR (Status)) {
- continue;
- }
-
- Status = (*CallBackFunction)(
- HandleBuffer[Index],
- Instance,
- Context
- );
- }
-
- gBS->FreePool (HandleBuffer);
-
- return EFI_SUCCESS;
-}
-
-EFI_STATUS
-EFIAPI
-VisitingAPciInstance (
- IN EFI_HANDLE Handle,
- IN VOID *Instance,
- IN VOID *Context
- )
-{
- EFI_STATUS Status;
- EFI_PCI_IO_PROTOCOL *PciIo;
- PCI_TYPE00 Pci;
-
- PciIo = (EFI_PCI_IO_PROTOCOL *)Instance;
-
- //
- // Check for all PCI device
- //
- Status = PciIo->Pci.Read (
- PciIo,
- EfiPciIoWidthUint32,
- 0,
- sizeof (Pci) / sizeof (UINT32),
- &Pci
- );
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- return (*(VISIT_PCI_INSTANCE_CALLBACK)(UINTN)Context)(
- Handle,
- PciIo,
- &Pci
- );
-}
-
-EFI_STATUS
-VisitAllPciInstances (
- IN VISIT_PCI_INSTANCE_CALLBACK CallBackFunction
- )
-{
- return VisitAllInstancesOfProtocol (
- &gEfiPciIoProtocolGuid,
- VisitingAPciInstance,
- (VOID *)(UINTN)CallBackFunction
- );
-}
-
-/**
- Do platform specific PCI Device check and add them to
- ConOut, ConIn, ErrOut.
-
- @param[in] Handle - Handle of PCI device instance
- @param[in] PciIo - PCI IO protocol instance
- @param[in] Pci - PCI Header register block
-
- @retval EFI_SUCCESS - PCI Device check and Console variable update
- successfully.
- @retval EFI_STATUS - PCI Device check or Console variable update fail.
-
-**/
-EFI_STATUS
-EFIAPI
-DetectAndPreparePlatformPciDevicePath (
- IN EFI_HANDLE Handle,
- IN EFI_PCI_IO_PROTOCOL *PciIo,
- IN PCI_TYPE00 *Pci
- )
-{
- EFI_STATUS Status;
-
- Status = PciIo->Attributes (
- PciIo,
- EfiPciIoAttributeOperationEnable,
- EFI_PCI_DEVICE_ENABLE,
- NULL
- );
- ASSERT_EFI_ERROR (Status);
-
- //
- // Here we decide whether it is LPC Bridge
- //
- if ((IS_PCI_LPC (Pci)) ||
- ((IS_PCI_ISA_PDECODE (Pci)) &&
- (Pci->Hdr.VendorId == 0x8086) &&
- (Pci->Hdr.DeviceId == 0x7000)
- )
- )
- {
- //
- // Add IsaKeyboard to ConIn,
- // add IsaSerial to ConOut, ConIn, ErrOut
- //
- DEBUG ((DEBUG_INFO, "Found LPC Bridge device\n"));
- PrepareLpcBridgeDevicePath (Handle);
- return EFI_SUCCESS;
- }
-
- //
- // Here we decide which Serial device to enable in PCI bus
- //
- if (IS_PCI_16550SERIAL (Pci)) {
- //
- // Add them to ConOut, ConIn, ErrOut.
- //
- DEBUG ((DEBUG_INFO, "Found PCI 16550 SERIAL device\n"));
- PreparePciSerialDevicePath (Handle);
- return EFI_SUCCESS;
- }
-
- //
- // Here we decide which display device to enable in PCI bus
- //
- if (IS_PCI_DISPLAY (Pci)) {
- //
- // Add them to ConOut.
- //
- DEBUG ((DEBUG_INFO, "Found PCI display device\n"));
- PreparePciDisplayDevicePath (Handle);
- return EFI_SUCCESS;
- }
-
- return Status;
-}
-
-/**
- Connect the predefined platform default console device.
-
- Always try to find and enable PCI display devices.
-
- @param[in] PlatformConsole Predefined platform default console device array.
-**/
-VOID
-PlatformInitializeConsole (
- IN PLATFORM_CONSOLE_CONNECT_ENTRY *PlatformConsole
- )
-{
- UINTN Index;
-
- //
- // Do platform specific PCI Device check and add them to ConOut, ConIn,
- // ErrOut
- //
- VisitAllPciInstances (DetectAndPreparePlatformPciDevicePath);
-
- //
- // Have chance to connect the platform default console,
- // the platform default console is the minimum device group
- // the platform should support
- //
- for (Index = 0; PlatformConsole[Index].DevicePath != NULL; ++Index) {
- //
- // Update the console variable with the connect type
- //
- if ((PlatformConsole[Index].ConnectType & CONSOLE_IN) == CONSOLE_IN) {
- EfiBootManagerUpdateConsoleVariable (
- ConIn,
- PlatformConsole[Index].DevicePath,
- NULL
- );
- }
-
- if ((PlatformConsole[Index].ConnectType & CONSOLE_OUT) == CONSOLE_OUT) {
- EfiBootManagerUpdateConsoleVariable (
- ConOut,
- PlatformConsole[Index].DevicePath,
- NULL
- );
- }
-
- if ((PlatformConsole[Index].ConnectType & STD_ERROR) == STD_ERROR) {
- EfiBootManagerUpdateConsoleVariable (
- ErrOut,
- PlatformConsole[Index].DevicePath,
- NULL
- );
- }
- }
-}
-
-/**
- Configure PCI Interrupt Line register for applicable devices
- Ported from SeaBIOS, src/fw/pciinit.c, *_pci_slot_get_irq()
-
- @param[in] Handle - Handle of PCI device instance
- @param[in] PciIo - PCI IO protocol instance
- @param[in] PciHdr - PCI Header register block
-
- @retval EFI_SUCCESS - PCI Interrupt Line register configured successfully.
-
-**/
-EFI_STATUS
-EFIAPI
-SetPciIntLine (
- IN EFI_HANDLE Handle,
- IN EFI_PCI_IO_PROTOCOL *PciIo,
- IN PCI_TYPE00 *PciHdr
- )
-{
- EFI_DEVICE_PATH_PROTOCOL *DevPathNode;
- EFI_DEVICE_PATH_PROTOCOL *DevPath;
- UINTN RootSlot;
- UINTN Idx;
- UINT8 IrqLine;
- EFI_STATUS Status;
- UINT32 RootBusNumber;
-
- Status = EFI_SUCCESS;
-
- if (PciHdr->Device.InterruptPin != 0) {
- DevPathNode = DevicePathFromHandle (Handle);
- ASSERT (DevPathNode != NULL);
- DevPath = DevPathNode;
-
- RootBusNumber = 0;
- if ((DevicePathType (DevPathNode) == ACPI_DEVICE_PATH) &&
- (DevicePathSubType (DevPathNode) == ACPI_DP) &&
- (((ACPI_HID_DEVICE_PATH *)DevPathNode)->HID == EISA_PNP_ID (0x0A03)))
- {
- RootBusNumber = ((ACPI_HID_DEVICE_PATH *)DevPathNode)->UID;
- }
-
- //
- // Compute index into PciHostIrqs[] table by walking
- // the device path and adding up all device numbers
- //
- Status = EFI_NOT_FOUND;
- RootSlot = 0;
- Idx = PciHdr->Device.InterruptPin - 1;
- while (!IsDevicePathEnd (DevPathNode)) {
- if ((DevicePathType (DevPathNode) == HARDWARE_DEVICE_PATH) &&
- (DevicePathSubType (DevPathNode) == HW_PCI_DP))
- {
- Idx += ((PCI_DEVICE_PATH *)DevPathNode)->Device;
-
- //
- // Unlike SeaBIOS, which starts climbing from the leaf device
- // up toward the root, we traverse the device path starting at
- // the root moving toward the leaf node.
- // The slot number of the top-level parent bridge is needed for
- // Q35 cases with more than 24 slots on the root bus.
- //
- if (Status != EFI_SUCCESS) {
- Status = EFI_SUCCESS;
- RootSlot = ((PCI_DEVICE_PATH *)DevPathNode)->Device;
- }
- }
-
- DevPathNode = NextDevicePathNode (DevPathNode);
- }
-
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- if ((RootBusNumber == 0) && (RootSlot == 0)) {
- DEBUG ((
- DEBUG_ERROR,
- "%a: PCI host bridge (00:00.0) should have no interrupts!\n",
- __func__
- ));
- ASSERT (FALSE);
- }
-
- //
- // Final PciHostIrqs[] index calculation depends on the platform
- // and should match SeaBIOS src/fw/pciinit.c *_pci_slot_get_irq()
- //
- switch (mHostBridgeDevId) {
- case INTEL_82441_DEVICE_ID:
- Idx -= 1;
- break;
- case INTEL_Q35_MCH_DEVICE_ID:
- //
- // SeaBIOS contains the following comment:
- // "Slots 0-24 rotate slot:pin mapping similar to piix above, but
- // with a different starting index - see q35-acpi-dsdt.dsl.
- //
- // Slots 25-31 all use LNKA mapping (or LNKE, but A:D = E:H)"
- //
- if (RootSlot > 24) {
- //
- // in this case, subtract back out RootSlot from Idx
- // (SeaBIOS never adds it to begin with, but that would make our
- // device path traversal loop above too awkward)
- //
- Idx -= RootSlot;
- }
-
- break;
- default:
- ASSERT (FALSE); // should never get here
- }
-
- Idx %= ARRAY_SIZE (PciHostIrqs);
- IrqLine = PciHostIrqs[Idx];
-
- DEBUG_CODE_BEGIN ();
- {
- CHAR16 *DevPathString;
- STATIC CHAR16 Fallback[] = L"<failed to convert>";
- UINTN Segment, Bus, Device, Function;
-
- DevPathString = ConvertDevicePathToText (DevPath, FALSE, FALSE);
- if (DevPathString == NULL) {
- DevPathString = Fallback;
- }
-
- Status = PciIo->GetLocation (PciIo, &Segment, &Bus, &Device, &Function);
- ASSERT_EFI_ERROR (Status);
-
- DEBUG ((
- DEBUG_VERBOSE,
- "%a: [%02x:%02x.%x] %s -> 0x%02x\n",
- __func__,
- (UINT32)Bus,
- (UINT32)Device,
- (UINT32)Function,
- DevPathString,
- IrqLine
- ));
-
- if (DevPathString != Fallback) {
- FreePool (DevPathString);
- }
- }
- DEBUG_CODE_END ();
-
- //
- // Set PCI Interrupt Line register for this device to PciHostIrqs[Idx]
- //
- Status = PciIo->Pci.Write (
- PciIo,
- EfiPciIoWidthUint8,
- PCI_INT_LINE_OFFSET,
- 1,
- &IrqLine
- );
- }
-
- return Status;
-}
-
-VOID
-PciAcpiInitialization (
- )
-{
- UINTN Pmba;
-
- //
- // Query Host Bridge DID to determine platform type
- //
- mHostBridgeDevId = PcdGet16 (PcdOvmfHostBridgePciDevId);
- switch (mHostBridgeDevId) {
- case INTEL_82441_DEVICE_ID:
- Pmba = POWER_MGMT_REGISTER_PIIX4 (PIIX4_PMBA);
- //
- // 00:01.0 ISA Bridge (PIIX4) LNK routing targets
- //
- PciWrite8 (PCI_LIB_ADDRESS (0, 1, 0, 0x60), 0x0b); // A
- PciWrite8 (PCI_LIB_ADDRESS (0, 1, 0, 0x61), 0x0b); // B
- PciWrite8 (PCI_LIB_ADDRESS (0, 1, 0, 0x62), 0x0a); // C
- PciWrite8 (PCI_LIB_ADDRESS (0, 1, 0, 0x63), 0x0a); // D
- break;
- case INTEL_Q35_MCH_DEVICE_ID:
- Pmba = POWER_MGMT_REGISTER_Q35 (ICH9_PMBASE);
- //
- // 00:1f.0 LPC Bridge (Q35) LNK routing targets
- //
- PciWrite8 (PCI_LIB_ADDRESS (0, 0x1f, 0, 0x60), 0x0a); // A
- PciWrite8 (PCI_LIB_ADDRESS (0, 0x1f, 0, 0x61), 0x0a); // B
- PciWrite8 (PCI_LIB_ADDRESS (0, 0x1f, 0, 0x62), 0x0b); // C
- PciWrite8 (PCI_LIB_ADDRESS (0, 0x1f, 0, 0x63), 0x0b); // D
- PciWrite8 (PCI_LIB_ADDRESS (0, 0x1f, 0, 0x68), 0x0a); // E
- PciWrite8 (PCI_LIB_ADDRESS (0, 0x1f, 0, 0x69), 0x0a); // F
- PciWrite8 (PCI_LIB_ADDRESS (0, 0x1f, 0, 0x6a), 0x0b); // G
- PciWrite8 (PCI_LIB_ADDRESS (0, 0x1f, 0, 0x6b), 0x0b); // H
- break;
- default:
- DEBUG ((
- DEBUG_ERROR,
- "%a: Unknown Host Bridge Device ID: 0x%04x\n",
- __func__,
- mHostBridgeDevId
- ));
- ASSERT (FALSE);
- return;
- }
-
- //
- // Initialize PCI_INTERRUPT_LINE for applicable present PCI devices
- //
- VisitAllPciInstances (SetPciIntLine);
-
- //
- // Set ACPI SCI_EN bit in PMCNTRL
- //
- IoOr16 ((PciRead32 (Pmba) & ~BIT0) + 4, BIT0);
-}
-
-EFI_STATUS
-EFIAPI
-ConnectRecursivelyIfPciMassStorage (
- IN EFI_HANDLE Handle,
- IN EFI_PCI_IO_PROTOCOL *Instance,
- IN PCI_TYPE00 *PciHeader
- )
-{
- EFI_STATUS Status;
- EFI_DEVICE_PATH_PROTOCOL *DevicePath;
- CHAR16 *DevPathStr;
-
- //
- // Recognize PCI Mass Storage
- //
- if (IS_CLASS1 (PciHeader, PCI_CLASS_MASS_STORAGE)) {
- DevicePath = NULL;
- Status = gBS->HandleProtocol (
- Handle,
- &gEfiDevicePathProtocolGuid,
- (VOID *)&DevicePath
- );
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- //
- // Print Device Path
- //
- DevPathStr = ConvertDevicePathToText (DevicePath, FALSE, FALSE);
- if (DevPathStr != NULL) {
- DEBUG ((
- DEBUG_INFO,
- "Found Mass Storage device: %s\n",
- DevPathStr
- ));
- FreePool (DevPathStr);
- }
-
- Status = gBS->ConnectController (Handle, NULL, NULL, TRUE);
- if (EFI_ERROR (Status)) {
- return Status;
- }
- }
-
- return EFI_SUCCESS;
-}
-
-/**
- Connect with predefined platform connect sequence.
-
- The OEM/IBV can customize with their own connect sequence.
-**/
-VOID
-PlatformBdsConnectSequence (
- VOID
- )
-{
- UINTN Index;
-
- DEBUG ((DEBUG_INFO, "PlatformBdsConnectSequence\n"));
-
- Index = 0;
-
- //
- // Here we can get the customized platform connect sequence
- // Notes: we can connect with new variable which record the
- // last time boots connect device path sequence
- //
- while (gPlatformConnectSequence[Index] != NULL) {
- //
- // Build the platform boot option
- //
- EfiBootManagerConnectDevicePath (gPlatformConnectSequence[Index], NULL);
- Index++;
- }
-
- EfiBootManagerConnectAll ();
-}
-
-/**
- Do the platform specific action after the console is ready
-
- Possible things that can be done in PlatformBootManagerAfterConsole:
-
- > Console post action:
- > Dynamically switch output mode from 100x31 to 80x25 for certain senarino
- > Signal console ready platform customized event
- > Run diagnostics like memory testing
- > Connect certain devices
- > Dispatch aditional option roms
- > Special boot: e.g.: USB boot, enter UI
-**/
-VOID
-EFIAPI
-PlatformBootManagerAfterConsole (
- VOID
- )
-{
- EFI_BOOT_MODE BootMode;
-
- DEBUG ((DEBUG_INFO, "PlatformBootManagerAfterConsole\n"));
-
- //
- // Get current Boot Mode
- //
- BootMode = GetBootModeHob ();
- DEBUG ((DEBUG_INFO, "Boot Mode:%x\n", BootMode));
-
- //
- // Go the different platform policy with different boot mode
- // Notes: this part code can be change with the table policy
- //
- ASSERT (BootMode == BOOT_WITH_FULL_CONFIGURATION);
-
- //
- // Logo show
- //
- BootLogoEnableLogo ();
-
- //
- // Set PCI Interrupt Line registers and ACPI SCI_EN
- //
- PciAcpiInitialization ();
-
- //
- // Process QEMU's -kernel command line option
- //
- TryRunningQemuKernel ();
-
- //
- // Perform some platform specific connect sequence
- //
- PlatformBdsConnectSequence ();
-
- EfiBootManagerRefreshAllBootOption ();
-
- //
- // Register UEFI Shell (Will be removed if the Shell isn't built
- // which is the default)
- //
- PlatformRegisterFvBootOption (
- &gUefiShellFileGuid,
- L"EFI Internal Shell",
- LOAD_OPTION_ACTIVE
- );
-
- //
- // Register Grub
- //
- PlatformRegisterFvBootOption (
- &gGrubFileGuid,
- L"Grub Bootloader",
- LOAD_OPTION_ACTIVE
- );
-
- RemoveStaleFvFileOptions ();
-
- PlatformBmPrintScRegisterHandler ();
-}
-
-/**
- This notification function is invoked when an instance of the
- EFI_DEVICE_PATH_PROTOCOL is produced.
-
- @param Event The event that occurred
- @param Context For EFI compatibility. Not used.
-
-**/
-VOID
-EFIAPI
-NotifyDevPath (
- IN EFI_EVENT Event,
- IN VOID *Context
- )
-{
- EFI_HANDLE Handle;
- EFI_STATUS Status;
- UINTN BufferSize;
- EFI_DEVICE_PATH_PROTOCOL *DevPathNode;
- ATAPI_DEVICE_PATH *Atapi;
-
- //
- // Examine all new handles
- //
- for ( ; ;) {
- //
- // Get the next handle
- //
- BufferSize = sizeof (Handle);
- Status = gBS->LocateHandle (
- ByRegisterNotify,
- NULL,
- mEfiDevPathNotifyReg,
- &BufferSize,
- &Handle
- );
-
- //
- // If not found, we're done
- //
- if (EFI_NOT_FOUND == Status) {
- break;
- }
-
- if (EFI_ERROR (Status)) {
- continue;
- }
-
- //
- // Get the DevicePath protocol on that handle
- //
- Status = gBS->HandleProtocol (
- Handle,
- &gEfiDevicePathProtocolGuid,
- (VOID **)&DevPathNode
- );
- ASSERT_EFI_ERROR (Status);
-
- while (!IsDevicePathEnd (DevPathNode)) {
- //
- // Find the handler to dump this device path node
- //
- if (
- (DevicePathType (DevPathNode) == MESSAGING_DEVICE_PATH) &&
- (DevicePathSubType (DevPathNode) == MSG_ATAPI_DP)
- )
- {
- Atapi = (ATAPI_DEVICE_PATH *)DevPathNode;
- PciOr16 (
- PCI_LIB_ADDRESS (
- 0,
- 1,
- 1,
- (Atapi->PrimarySecondary == 1) ? 0x42 : 0x40
- ),
- BIT15
- );
- }
-
- //
- // Next device path node
- //
- DevPathNode = NextDevicePathNode (DevPathNode);
- }
- }
-
- return;
-}
-
-VOID
-InstallDevicePathCallback (
- VOID
- )
-{
- DEBUG ((DEBUG_INFO, "Registered NotifyDevPath Event\n"));
- mEfiDevPathEvent = EfiCreateProtocolNotifyEvent (
- &gEfiDevicePathProtocolGuid,
- TPL_CALLBACK,
- NotifyDevPath,
- NULL,
- &mEfiDevPathNotifyReg
- );
-}
-
-/**
- This function is called each second during the boot manager waits the
- timeout.
-
- @param TimeoutRemain The remaining timeout.
-**/
-VOID
-EFIAPI
-PlatformBootManagerWaitCallback (
- UINT16 TimeoutRemain
- )
-{
- //
- // Since the timeout should be forced to zero we should never
- // Get here
- //
- ASSERT (FALSE);
-}
-
-/**
- The function is called when no boot option could be launched,
- including platform recovery options and options pointing to applications
- built into firmware volumes.
-
- If this function returns, BDS attempts to enter an infinite loop.
-**/
-VOID
-EFIAPI
-PlatformBootManagerUnableToBoot (
- VOID
- )
-{
- //
- // If we get here something failed about the grub boot but since
- // We're privy to the secret we must panic and not retry or loop
- //
- ASSERT (FALSE);
- CpuDeadLoop ();
-}
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