Files
system76-edk2/ArmPkg/Library/BdsLib/BdsFilePath.c
Heyi Guo fb48e7780e ArmPkg/BdsLib: Send RemainingDevicePath to PXE Load File protocol
Load File protocol requires remaining device path rather than whole
device path. For PXE, it actually requires end node device path only,
or else invalid parameter will be returned directly.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Heyi Guo <heyi.guo@linaro.org>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@19148 6f19259b-4bc3-4df7-8a09-765794883524
2015-12-07 16:51:35 +00:00

1413 lines
46 KiB
C

/** @file
*
* Copyright (c) 2011-2014, ARM 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 "BdsInternal.h"
#include <Library/NetLib.h>
#include <Protocol/Bds.h>
#include <Protocol/UsbIo.h>
#include <Protocol/DiskIo.h>
#include <Protocol/LoadedImage.h>
#include <Protocol/SimpleNetwork.h>
#include <Protocol/Dhcp4.h>
#include <Protocol/Mtftp4.h>
#define IS_DEVICE_PATH_NODE(node,type,subtype) (((node)->Type == (type)) && ((node)->SubType == (subtype)))
/* Type and defines to set up the DHCP4 options */
typedef struct {
EFI_DHCP4_PACKET_OPTION Head;
UINT8 Route;
} DHCP4_OPTION;
#define DHCP_TAG_PARA_LIST 55
#define DHCP_TAG_NETMASK 1
#define DHCP_TAG_ROUTER 3
/*
Constant strings and define related to the message indicating the amount of
progress in the dowloading of a TFTP file.
*/
// Frame for the progression slider
STATIC CONST CHAR16 mTftpProgressFrame[] = L"[ ]";
// Number of steps in the progression slider
#define TFTP_PROGRESS_SLIDER_STEPS ((sizeof (mTftpProgressFrame) / sizeof (CHAR16)) - 3)
// Size in number of characters plus one (final zero) of the message to
// indicate the progress of a tftp download. The format is "[(progress slider:
// 40 characters)] (nb of KBytes downloaded so far: 7 characters) Kb". There
// are thus the number of characters in mTftpProgressFrame[] plus 11 characters
// (2 // spaces, "Kb" and seven characters for the number of KBytes).
#define TFTP_PROGRESS_MESSAGE_SIZE ((sizeof (mTftpProgressFrame) / sizeof (CHAR16)) + 12)
// String to delete the tftp progress message to be able to update it :
// (TFTP_PROGRESS_MESSAGE_SIZE-1) '\b'
STATIC CONST CHAR16 mTftpProgressDelete[] = L"\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b";
// Extract the FilePath from the Device Path
CHAR16*
BdsExtractFilePathFromDevicePath (
IN CONST CHAR16 *StrDevicePath,
IN UINTN NumberDevicePathNode
)
{
UINTN Node;
CHAR16 *Str;
Str = (CHAR16*)StrDevicePath;
Node = 0;
while ((Str != NULL) && (*Str != L'\0') && (Node < NumberDevicePathNode)) {
if ((*Str == L'/') || (*Str == L'\\')) {
Node++;
}
Str++;
}
if (*Str == L'\0') {
return NULL;
} else {
return Str;
}
}
BOOLEAN
BdsIsRemovableUsb (
IN EFI_DEVICE_PATH* DevicePath
)
{
return ((DevicePathType (DevicePath) == MESSAGING_DEVICE_PATH) &&
((DevicePathSubType (DevicePath) == MSG_USB_CLASS_DP) ||
(DevicePathSubType (DevicePath) == MSG_USB_WWID_DP)));
}
EFI_STATUS
BdsGetDeviceUsb (
IN EFI_DEVICE_PATH* RemovableDevicePath,
OUT EFI_HANDLE* DeviceHandle,
OUT EFI_DEVICE_PATH** NewDevicePath
)
{
EFI_STATUS Status;
UINTN Index;
UINTN UsbIoHandleCount;
EFI_HANDLE *UsbIoBuffer;
EFI_DEVICE_PATH* UsbIoDevicePath;
EFI_DEVICE_PATH* TmpDevicePath;
USB_WWID_DEVICE_PATH* WwidDevicePath1;
USB_WWID_DEVICE_PATH* WwidDevicePath2;
USB_CLASS_DEVICE_PATH* UsbClassDevicePath1;
USB_CLASS_DEVICE_PATH* UsbClassDevicePath2;
// Get all the UsbIo handles
UsbIoHandleCount = 0;
Status = gBS->LocateHandleBuffer (ByProtocol, &gEfiUsbIoProtocolGuid, NULL, &UsbIoHandleCount, &UsbIoBuffer);
if (EFI_ERROR (Status) || (UsbIoHandleCount == 0)) {
return Status;
}
// Check if one of the handles matches the USB description
for (Index = 0; Index < UsbIoHandleCount; Index++) {
Status = gBS->HandleProtocol (UsbIoBuffer[Index], &gEfiDevicePathProtocolGuid, (VOID **) &UsbIoDevicePath);
if (!EFI_ERROR (Status)) {
TmpDevicePath = UsbIoDevicePath;
while (!IsDevicePathEnd (TmpDevicePath)) {
// Check if the Device Path node is a USB Removable device Path node
if (BdsIsRemovableUsb (TmpDevicePath)) {
if (TmpDevicePath->SubType == MSG_USB_WWID_DP) {
WwidDevicePath1 = (USB_WWID_DEVICE_PATH*)RemovableDevicePath;
WwidDevicePath2 = (USB_WWID_DEVICE_PATH*)TmpDevicePath;
if ((WwidDevicePath1->VendorId == WwidDevicePath2->VendorId) &&
(WwidDevicePath1->ProductId == WwidDevicePath2->ProductId) &&
(CompareMem (WwidDevicePath1+1, WwidDevicePath2+1, DevicePathNodeLength(WwidDevicePath1)-sizeof (USB_WWID_DEVICE_PATH)) == 0))
{
*DeviceHandle = UsbIoBuffer[Index];
// Add the additional original Device Path Nodes (eg: FilePath Device Path Node) to the new Device Path
*NewDevicePath = AppendDevicePath (UsbIoDevicePath, NextDevicePathNode (RemovableDevicePath));
return EFI_SUCCESS;
}
} else {
UsbClassDevicePath1 = (USB_CLASS_DEVICE_PATH*)RemovableDevicePath;
UsbClassDevicePath2 = (USB_CLASS_DEVICE_PATH*)TmpDevicePath;
if ((UsbClassDevicePath1->VendorId != 0xFFFF) && (UsbClassDevicePath1->VendorId == UsbClassDevicePath2->VendorId) &&
(UsbClassDevicePath1->ProductId != 0xFFFF) && (UsbClassDevicePath1->ProductId == UsbClassDevicePath2->ProductId) &&
(UsbClassDevicePath1->DeviceClass != 0xFF) && (UsbClassDevicePath1->DeviceClass == UsbClassDevicePath2->DeviceClass) &&
(UsbClassDevicePath1->DeviceSubClass != 0xFF) && (UsbClassDevicePath1->DeviceSubClass == UsbClassDevicePath2->DeviceSubClass) &&
(UsbClassDevicePath1->DeviceProtocol != 0xFF) && (UsbClassDevicePath1->DeviceProtocol == UsbClassDevicePath2->DeviceProtocol))
{
*DeviceHandle = UsbIoBuffer[Index];
// Add the additional original Device Path Nodes (eg: FilePath Device Path Node) to the new Device Path
*NewDevicePath = AppendDevicePath (UsbIoDevicePath, NextDevicePathNode (RemovableDevicePath));
return EFI_SUCCESS;
}
}
}
TmpDevicePath = NextDevicePathNode (TmpDevicePath);
}
}
}
return EFI_NOT_FOUND;
}
BOOLEAN
BdsIsRemovableHd (
IN EFI_DEVICE_PATH* DevicePath
)
{
return IS_DEVICE_PATH_NODE (DevicePath, MEDIA_DEVICE_PATH, MEDIA_HARDDRIVE_DP);
}
EFI_STATUS
BdsGetDeviceHd (
IN EFI_DEVICE_PATH* RemovableDevicePath,
OUT EFI_HANDLE* DeviceHandle,
OUT EFI_DEVICE_PATH** NewDevicePath
)
{
EFI_STATUS Status;
UINTN Index;
UINTN PartitionHandleCount;
EFI_HANDLE *PartitionBuffer;
EFI_DEVICE_PATH* PartitionDevicePath;
EFI_DEVICE_PATH* TmpDevicePath;
HARDDRIVE_DEVICE_PATH* HardDriveDevicePath1;
HARDDRIVE_DEVICE_PATH* HardDriveDevicePath2;
// Get all the DiskIo handles
PartitionHandleCount = 0;
Status = gBS->LocateHandleBuffer (ByProtocol, &gEfiDiskIoProtocolGuid, NULL, &PartitionHandleCount, &PartitionBuffer);
if (EFI_ERROR (Status) || (PartitionHandleCount == 0)) {
return Status;
}
// Check if one of the handles matches the Hard Disk Description
for (Index = 0; Index < PartitionHandleCount; Index++) {
Status = gBS->HandleProtocol (PartitionBuffer[Index], &gEfiDevicePathProtocolGuid, (VOID **) &PartitionDevicePath);
if (!EFI_ERROR (Status)) {
TmpDevicePath = PartitionDevicePath;
while (!IsDevicePathEnd (TmpDevicePath)) {
// Check if the Device Path node is a HD Removable device Path node
if (BdsIsRemovableHd (TmpDevicePath)) {
HardDriveDevicePath1 = (HARDDRIVE_DEVICE_PATH*)RemovableDevicePath;
HardDriveDevicePath2 = (HARDDRIVE_DEVICE_PATH*)TmpDevicePath;
if ((HardDriveDevicePath1->SignatureType == HardDriveDevicePath2->SignatureType) &&
(CompareGuid ((EFI_GUID *)HardDriveDevicePath1->Signature, (EFI_GUID *)HardDriveDevicePath2->Signature) == TRUE) &&
(HardDriveDevicePath1->PartitionNumber == HardDriveDevicePath2->PartitionNumber))
{
*DeviceHandle = PartitionBuffer[Index];
// Add the additional original Device Path Nodes (eg: FilePath Device Path Node) to the new Device Path
*NewDevicePath = AppendDevicePath (PartitionDevicePath, NextDevicePathNode (RemovableDevicePath));
return EFI_SUCCESS;
}
}
TmpDevicePath = NextDevicePathNode (TmpDevicePath);
}
}
}
return EFI_NOT_FOUND;
}
/*BOOLEAN
BdsIsRemovableCdrom (
IN EFI_DEVICE_PATH* DevicePath
)
{
return IS_DEVICE_PATH_NODE (DevicePath, MEDIA_DEVICE_PATH, MEDIA_CDROM_DP);
}
EFI_STATUS
BdsGetDeviceCdrom (
IN EFI_DEVICE_PATH* RemovableDevicePath,
OUT EFI_HANDLE* DeviceHandle,
OUT EFI_DEVICE_PATH** DevicePath
)
{
ASSERT(0);
return EFI_UNSUPPORTED;
}*/
typedef BOOLEAN
(*BDS_IS_REMOVABLE) (
IN EFI_DEVICE_PATH* DevicePath
);
typedef EFI_STATUS
(*BDS_GET_DEVICE) (
IN EFI_DEVICE_PATH* RemovableDevicePath,
OUT EFI_HANDLE* DeviceHandle,
OUT EFI_DEVICE_PATH** DevicePath
);
typedef struct {
BDS_IS_REMOVABLE IsRemovable;
BDS_GET_DEVICE GetDevice;
} BDS_REMOVABLE_DEVICE_SUPPORT;
BDS_REMOVABLE_DEVICE_SUPPORT RemovableDeviceSupport[] = {
{ BdsIsRemovableUsb, BdsGetDeviceUsb },
{ BdsIsRemovableHd, BdsGetDeviceHd },
//{ BdsIsRemovableCdrom, BdsGetDeviceCdrom }
};
STATIC
BOOLEAN
IsRemovableDevice (
IN EFI_DEVICE_PATH* DevicePath
)
{
UINTN Index;
EFI_DEVICE_PATH* TmpDevicePath;
TmpDevicePath = DevicePath;
while (!IsDevicePathEnd (TmpDevicePath)) {
for (Index = 0; Index < sizeof (RemovableDeviceSupport) / sizeof (BDS_REMOVABLE_DEVICE_SUPPORT); Index++) {
if (RemovableDeviceSupport[Index].IsRemovable (TmpDevicePath)) {
return TRUE;
}
}
TmpDevicePath = NextDevicePathNode (TmpDevicePath);
}
return FALSE;
}
STATIC
EFI_STATUS
TryRemovableDevice (
IN EFI_DEVICE_PATH* DevicePath,
OUT EFI_HANDLE* DeviceHandle,
OUT EFI_DEVICE_PATH** NewDevicePath
)
{
EFI_STATUS Status;
UINTN Index;
EFI_DEVICE_PATH* TmpDevicePath;
BDS_REMOVABLE_DEVICE_SUPPORT* RemovableDevice;
EFI_DEVICE_PATH* RemovableDevicePath;
BOOLEAN RemovableFound;
RemovableDevice = NULL;
RemovableDevicePath = NULL;
RemovableFound = FALSE;
TmpDevicePath = DevicePath;
while (!IsDevicePathEnd (TmpDevicePath) && !RemovableFound) {
for (Index = 0; Index < sizeof (RemovableDeviceSupport) / sizeof (BDS_REMOVABLE_DEVICE_SUPPORT); Index++) {
RemovableDevice = &RemovableDeviceSupport[Index];
if (RemovableDevice->IsRemovable (TmpDevicePath)) {
RemovableDevicePath = TmpDevicePath;
RemovableFound = TRUE;
break;
}
}
TmpDevicePath = NextDevicePathNode (TmpDevicePath);
}
if (!RemovableFound) {
return EFI_NOT_FOUND;
}
// Search into the current started drivers
Status = RemovableDevice->GetDevice (RemovableDevicePath, DeviceHandle, NewDevicePath);
if (Status == EFI_NOT_FOUND) {
// Connect all the drivers
BdsConnectAllDrivers ();
// Search again into all the drivers
Status = RemovableDevice->GetDevice (RemovableDevicePath, DeviceHandle, NewDevicePath);
}
return Status;
}
STATIC
EFI_STATUS
BdsConnectAndUpdateDevicePath (
IN OUT EFI_DEVICE_PATH_PROTOCOL **DevicePath,
OUT EFI_HANDLE *Handle,
OUT EFI_DEVICE_PATH_PROTOCOL **RemainingDevicePath
)
{
EFI_DEVICE_PATH* Remaining;
EFI_DEVICE_PATH* NewDevicePath;
EFI_STATUS Status;
EFI_HANDLE PreviousHandle;
if ((DevicePath == NULL) || (*DevicePath == NULL) || (Handle == NULL)) {
return EFI_INVALID_PARAMETER;
}
PreviousHandle = NULL;
do {
Remaining = *DevicePath;
// The LocateDevicePath() function locates all devices on DevicePath that support Protocol and returns
// the handle to the device that is closest to DevicePath. On output, the device path pointer is modified
// to point to the remaining part of the device path
Status = gBS->LocateDevicePath (&gEfiDevicePathProtocolGuid, &Remaining, Handle);
if (!EFI_ERROR (Status)) {
if (*Handle == PreviousHandle) {
//
// If no forward progress is made try invoking the Dispatcher.
// A new FV may have been added to the system and new drivers
// may now be found.
// Status == EFI_SUCCESS means a driver was dispatched
// Status == EFI_NOT_FOUND means no new drivers were dispatched
//
Status = gDS->Dispatch ();
}
if (!EFI_ERROR (Status)) {
PreviousHandle = *Handle;
// Recursive = FALSE: We do not want to start the whole device tree
Status = gBS->ConnectController (*Handle, NULL, Remaining, FALSE);
}
}
} while (!EFI_ERROR (Status) && !IsDevicePathEnd (Remaining));
if (!EFI_ERROR (Status)) {
// Now, we have got the whole Device Path connected, call again ConnectController to ensure all the supported Driver
// Binding Protocol are connected (such as DiskIo and SimpleFileSystem)
Remaining = *DevicePath;
Status = gBS->LocateDevicePath (&gEfiDevicePathProtocolGuid, &Remaining, Handle);
if (!EFI_ERROR (Status)) {
Status = gBS->ConnectController (*Handle, NULL, Remaining, FALSE);
if (EFI_ERROR (Status)) {
// If the last node is a Memory Map Device Path just return EFI_SUCCESS.
if ((Remaining->Type == HARDWARE_DEVICE_PATH) && (Remaining->SubType == HW_MEMMAP_DP)) {
Status = EFI_SUCCESS;
}
}
}
} else if (!IsDevicePathEnd (Remaining) && !IsRemovableDevice (Remaining)) {
/*// If the remaining Device Path is a FilePath or MemoryMap then we consider the Device Path has been loaded correctly
if ((Remaining->Type == MEDIA_DEVICE_PATH) && (Remaining->SubType == MEDIA_FILEPATH_DP)) {
Status = EFI_SUCCESS;
} else if ((Remaining->Type == HARDWARE_DEVICE_PATH) && (Remaining->SubType == HW_MEMMAP_DP)) {
Status = EFI_SUCCESS;
}*/
//TODO: Should we just return success and leave the caller decide if it is the expected RemainingPath
Status = EFI_SUCCESS;
} else {
Status = TryRemovableDevice (*DevicePath, Handle, &NewDevicePath);
if (!EFI_ERROR (Status)) {
Status = BdsConnectAndUpdateDevicePath (&NewDevicePath, Handle, RemainingDevicePath);
*DevicePath = NewDevicePath;
return Status;
}
}
if (RemainingDevicePath) {
*RemainingDevicePath = Remaining;
}
return Status;
}
/**
Connect a Device Path and return the handle of the driver that support this DevicePath
@param DevicePath Device Path of the File to connect
@param Handle Handle of the driver that support this DevicePath
@param RemainingDevicePath Remaining DevicePath nodes that do not match the driver DevicePath
@retval EFI_SUCCESS A driver that matches the Device Path has been found
@retval EFI_NOT_FOUND No handles match the search.
@retval EFI_INVALID_PARAMETER DevicePath or Handle is NULL
**/
EFI_STATUS
BdsConnectDevicePath (
IN EFI_DEVICE_PATH_PROTOCOL* DevicePath,
OUT EFI_HANDLE *Handle,
OUT EFI_DEVICE_PATH_PROTOCOL **RemainingDevicePath
)
{
return BdsConnectAndUpdateDevicePath (&DevicePath, Handle, RemainingDevicePath);
}
BOOLEAN
BdsFileSystemSupport (
IN EFI_DEVICE_PATH *DevicePath,
IN EFI_HANDLE Handle,
IN EFI_DEVICE_PATH *RemainingDevicePath
)
{
EFI_STATUS Status;
EFI_SIMPLE_FILE_SYSTEM_PROTOCOL *FsProtocol;
Status = gBS->HandleProtocol (Handle, &gEfiSimpleFileSystemProtocolGuid, (VOID **)&FsProtocol);
return (!EFI_ERROR (Status) && IS_DEVICE_PATH_NODE (RemainingDevicePath, MEDIA_DEVICE_PATH, MEDIA_FILEPATH_DP));
}
EFI_STATUS
BdsFileSystemLoadImage (
IN OUT EFI_DEVICE_PATH **DevicePath,
IN EFI_HANDLE Handle,
IN EFI_DEVICE_PATH *RemainingDevicePath,
IN EFI_ALLOCATE_TYPE Type,
IN OUT EFI_PHYSICAL_ADDRESS *Image,
OUT UINTN *ImageSize
)
{
EFI_STATUS Status;
FILEPATH_DEVICE_PATH *FilePathDevicePath;
EFI_SIMPLE_FILE_SYSTEM_PROTOCOL *FsProtocol;
EFI_FILE_PROTOCOL *Fs;
EFI_FILE_INFO *FileInfo;
EFI_FILE_PROTOCOL *File;
UINTN Size;
ASSERT (IS_DEVICE_PATH_NODE (RemainingDevicePath, MEDIA_DEVICE_PATH, MEDIA_FILEPATH_DP));
FilePathDevicePath = (FILEPATH_DEVICE_PATH*)RemainingDevicePath;
Status = gBS->OpenProtocol (
Handle,
&gEfiSimpleFileSystemProtocolGuid,
(VOID**)&FsProtocol,
gImageHandle,
Handle,
EFI_OPEN_PROTOCOL_BY_DRIVER
);
if (EFI_ERROR (Status)) {
return Status;
}
// Try to Open the volume and get root directory
Status = FsProtocol->OpenVolume (FsProtocol, &Fs);
if (EFI_ERROR (Status)) {
goto CLOSE_PROTOCOL;
}
Status = Fs->Open (Fs, &File, FilePathDevicePath->PathName, EFI_FILE_MODE_READ, 0);
if (EFI_ERROR (Status)) {
goto CLOSE_PROTOCOL;
}
Size = 0;
File->GetInfo (File, &gEfiFileInfoGuid, &Size, NULL);
FileInfo = AllocatePool (Size);
Status = File->GetInfo (File, &gEfiFileInfoGuid, &Size, FileInfo);
if (EFI_ERROR (Status)) {
goto CLOSE_FILE;
}
// Get the file size
Size = FileInfo->FileSize;
if (ImageSize) {
*ImageSize = Size;
}
FreePool (FileInfo);
Status = gBS->AllocatePages (Type, EfiBootServicesCode, EFI_SIZE_TO_PAGES(Size), Image);
// Try to allocate in any pages if failed to allocate memory at the defined location
if ((Status == EFI_OUT_OF_RESOURCES) && (Type != AllocateAnyPages)) {
Status = gBS->AllocatePages (AllocateAnyPages, EfiBootServicesCode, EFI_SIZE_TO_PAGES(Size), Image);
}
if (!EFI_ERROR (Status)) {
Status = File->Read (File, &Size, (VOID*)(UINTN)(*Image));
}
CLOSE_FILE:
File->Close (File);
CLOSE_PROTOCOL:
gBS->CloseProtocol (
Handle,
&gEfiSimpleFileSystemProtocolGuid,
gImageHandle,
Handle);
return Status;
}
BOOLEAN
BdsMemoryMapSupport (
IN EFI_DEVICE_PATH *DevicePath,
IN EFI_HANDLE Handle,
IN EFI_DEVICE_PATH *RemainingDevicePath
)
{
return IS_DEVICE_PATH_NODE (DevicePath, HARDWARE_DEVICE_PATH, HW_MEMMAP_DP) ||
IS_DEVICE_PATH_NODE (RemainingDevicePath, HARDWARE_DEVICE_PATH, HW_MEMMAP_DP);
}
EFI_STATUS
BdsMemoryMapLoadImage (
IN OUT EFI_DEVICE_PATH **DevicePath,
IN EFI_HANDLE Handle,
IN EFI_DEVICE_PATH *RemainingDevicePath,
IN EFI_ALLOCATE_TYPE Type,
IN OUT EFI_PHYSICAL_ADDRESS* Image,
OUT UINTN *ImageSize
)
{
EFI_STATUS Status;
MEMMAP_DEVICE_PATH* MemMapPathDevicePath;
UINTN Size;
if (IS_DEVICE_PATH_NODE (RemainingDevicePath, HARDWARE_DEVICE_PATH, HW_MEMMAP_DP)) {
MemMapPathDevicePath = (MEMMAP_DEVICE_PATH*)RemainingDevicePath;
} else {
ASSERT (IS_DEVICE_PATH_NODE (*DevicePath, HARDWARE_DEVICE_PATH, HW_MEMMAP_DP));
MemMapPathDevicePath = (MEMMAP_DEVICE_PATH*)*DevicePath;
}
Size = MemMapPathDevicePath->EndingAddress - MemMapPathDevicePath->StartingAddress;
if (Size == 0) {
return EFI_INVALID_PARAMETER;
}
Status = gBS->AllocatePages (Type, EfiBootServicesCode, EFI_SIZE_TO_PAGES(Size), Image);
// Try to allocate in any pages if failed to allocate memory at the defined location
if ((Status == EFI_OUT_OF_RESOURCES) && (Type != AllocateAnyPages)) {
Status = gBS->AllocatePages (AllocateAnyPages, EfiBootServicesCode, EFI_SIZE_TO_PAGES(Size), Image);
}
if (!EFI_ERROR (Status)) {
CopyMem ((VOID*)(UINTN)(*Image), (CONST VOID*)(UINTN)MemMapPathDevicePath->StartingAddress, Size);
if (ImageSize != NULL) {
*ImageSize = Size;
}
}
return Status;
}
BOOLEAN
BdsFirmwareVolumeSupport (
IN EFI_DEVICE_PATH *DevicePath,
IN EFI_HANDLE Handle,
IN EFI_DEVICE_PATH *RemainingDevicePath
)
{
return IS_DEVICE_PATH_NODE (RemainingDevicePath, MEDIA_DEVICE_PATH, MEDIA_PIWG_FW_FILE_DP);
}
EFI_STATUS
BdsFirmwareVolumeLoadImage (
IN OUT EFI_DEVICE_PATH **DevicePath,
IN EFI_HANDLE Handle,
IN EFI_DEVICE_PATH *RemainingDevicePath,
IN EFI_ALLOCATE_TYPE Type,
IN OUT EFI_PHYSICAL_ADDRESS* Image,
OUT UINTN *ImageSize
)
{
EFI_STATUS Status;
EFI_FIRMWARE_VOLUME2_PROTOCOL *FwVol;
EFI_GUID *FvNameGuid;
EFI_SECTION_TYPE SectionType;
EFI_FV_FILETYPE FvType;
EFI_FV_FILE_ATTRIBUTES Attrib;
UINT32 AuthenticationStatus;
VOID* ImageBuffer;
ASSERT (IS_DEVICE_PATH_NODE (RemainingDevicePath, MEDIA_DEVICE_PATH, MEDIA_PIWG_FW_FILE_DP));
Status = gBS->HandleProtocol (Handle, &gEfiFirmwareVolume2ProtocolGuid, (VOID **)&FwVol);
if (EFI_ERROR (Status)) {
return Status;
}
FvNameGuid = EfiGetNameGuidFromFwVolDevicePathNode ((CONST MEDIA_FW_VOL_FILEPATH_DEVICE_PATH *)RemainingDevicePath);
if (FvNameGuid == NULL) {
Status = EFI_INVALID_PARAMETER;
}
SectionType = EFI_SECTION_PE32;
AuthenticationStatus = 0;
//Note: ReadSection at the opposite of ReadFile does not allow to pass ImageBuffer == NULL to get the size of the file.
ImageBuffer = NULL;
Status = FwVol->ReadSection (
FwVol,
FvNameGuid,
SectionType,
0,
&ImageBuffer,
ImageSize,
&AuthenticationStatus
);
if (!EFI_ERROR (Status)) {
#if 0
// In case the buffer has some address requirements, we must copy the buffer to a buffer following the requirements
if (Type != AllocateAnyPages) {
Status = gBS->AllocatePages (Type, EfiBootServicesCode, EFI_SIZE_TO_PAGES(*ImageSize),Image);
if (!EFI_ERROR (Status)) {
CopyMem ((VOID*)(UINTN)(*Image), ImageBuffer, *ImageSize);
FreePool (ImageBuffer);
}
}
#else
// We must copy the buffer into a page allocations. Otherwise, the caller could call gBS->FreePages() on the pool allocation
Status = gBS->AllocatePages (Type, EfiBootServicesCode, EFI_SIZE_TO_PAGES(*ImageSize), Image);
// Try to allocate in any pages if failed to allocate memory at the defined location
if ((Status == EFI_OUT_OF_RESOURCES) && (Type != AllocateAnyPages)) {
Status = gBS->AllocatePages (AllocateAnyPages, EfiBootServicesCode, EFI_SIZE_TO_PAGES(*ImageSize), Image);
}
if (!EFI_ERROR (Status)) {
CopyMem ((VOID*)(UINTN)(*Image), ImageBuffer, *ImageSize);
FreePool (ImageBuffer);
}
#endif
} else {
// Try a raw file, since a PE32 SECTION does not exist
Status = FwVol->ReadFile (
FwVol,
FvNameGuid,
NULL,
ImageSize,
&FvType,
&Attrib,
&AuthenticationStatus
);
if (!EFI_ERROR (Status)) {
Status = gBS->AllocatePages (Type, EfiBootServicesCode, EFI_SIZE_TO_PAGES(*ImageSize), Image);
// Try to allocate in any pages if failed to allocate memory at the defined location
if ((Status == EFI_OUT_OF_RESOURCES) && (Type != AllocateAnyPages)) {
Status = gBS->AllocatePages (AllocateAnyPages, EfiBootServicesCode, EFI_SIZE_TO_PAGES(*ImageSize), Image);
}
if (!EFI_ERROR (Status)) {
Status = FwVol->ReadFile (
FwVol,
FvNameGuid,
(VOID**)Image,
ImageSize,
&FvType,
&Attrib,
&AuthenticationStatus
);
}
}
}
return Status;
}
BOOLEAN
BdsPxeSupport (
IN EFI_DEVICE_PATH* DevicePath,
IN EFI_HANDLE Handle,
IN EFI_DEVICE_PATH* RemainingDevicePath
)
{
EFI_STATUS Status;
EFI_PXE_BASE_CODE_PROTOCOL* PxeBcProtocol;
if (!IsDevicePathEnd (RemainingDevicePath)) {
return FALSE;
}
Status = gBS->HandleProtocol (Handle, &gEfiPxeBaseCodeProtocolGuid, (VOID **)&PxeBcProtocol);
if (EFI_ERROR (Status)) {
return FALSE;
} else {
return TRUE;
}
}
EFI_STATUS
BdsPxeLoadImage (
IN OUT EFI_DEVICE_PATH **DevicePath,
IN EFI_HANDLE Handle,
IN EFI_DEVICE_PATH *RemainingDevicePath,
IN EFI_ALLOCATE_TYPE Type,
IN OUT EFI_PHYSICAL_ADDRESS* Image,
OUT UINTN *ImageSize
)
{
EFI_STATUS Status;
EFI_LOAD_FILE_PROTOCOL *LoadFileProtocol;
UINTN BufferSize;
EFI_PXE_BASE_CODE_PROTOCOL *Pxe;
// Get Load File Protocol attached to the PXE protocol
Status = gBS->HandleProtocol (Handle, &gEfiLoadFileProtocolGuid, (VOID **)&LoadFileProtocol);
if (EFI_ERROR (Status)) {
return Status;
}
Status = LoadFileProtocol->LoadFile (LoadFileProtocol, RemainingDevicePath, TRUE, &BufferSize, NULL);
if (Status == EFI_BUFFER_TOO_SMALL) {
Status = gBS->AllocatePages (Type, EfiBootServicesCode, EFI_SIZE_TO_PAGES(BufferSize), Image);
if (EFI_ERROR (Status)) {
return Status;
}
Status = LoadFileProtocol->LoadFile (LoadFileProtocol, RemainingDevicePath, TRUE, &BufferSize, (VOID*)(UINTN)(*Image));
if (!EFI_ERROR (Status) && (ImageSize != NULL)) {
*ImageSize = BufferSize;
}
}
if (Status == EFI_ALREADY_STARTED) {
Status = gBS->LocateProtocol (&gEfiPxeBaseCodeProtocolGuid, NULL, (VOID **)&Pxe);
if (!EFI_ERROR(Status)) {
// If PXE is already started, we stop it
Pxe->Stop (Pxe);
// And we try again
return BdsPxeLoadImage (DevicePath, Handle, RemainingDevicePath, Type, Image, ImageSize);
}
}
return Status;
}
BOOLEAN
BdsTftpSupport (
IN EFI_DEVICE_PATH *DevicePath,
IN EFI_HANDLE Handle,
IN EFI_DEVICE_PATH *RemainingDevicePath
)
{
EFI_STATUS Status;
EFI_DEVICE_PATH *NextDevicePath;
VOID *Interface;
// Validate the Remaining Device Path
if (IsDevicePathEnd (RemainingDevicePath)) {
return FALSE;
}
if (!IS_DEVICE_PATH_NODE (RemainingDevicePath, MESSAGING_DEVICE_PATH, MSG_IPv4_DP) &&
!IS_DEVICE_PATH_NODE (RemainingDevicePath, MESSAGING_DEVICE_PATH, MSG_IPv6_DP)) {
return FALSE;
}
NextDevicePath = NextDevicePathNode (RemainingDevicePath);
if (IsDevicePathEnd (NextDevicePath)) {
return FALSE;
}
if (!IS_DEVICE_PATH_NODE (NextDevicePath, MEDIA_DEVICE_PATH, MEDIA_FILEPATH_DP)) {
return FALSE;
}
Status = gBS->HandleProtocol (
Handle, &gEfiDevicePathProtocolGuid,
&Interface
);
if (EFI_ERROR (Status)) {
return FALSE;
}
//
// Check that the controller (identified by its handle "Handle") supports the
// MTFTPv4 Service Binding Protocol. If it does, it means that it supports the
// EFI MTFTPv4 Protocol needed to download the image through TFTP.
//
Status = gBS->HandleProtocol (
Handle, &gEfiMtftp4ServiceBindingProtocolGuid,
&Interface
);
if (EFI_ERROR (Status)) {
return FALSE;
}
return TRUE;
}
/**
Worker function that get the size in numbers of bytes of a file from a TFTP
server before to download the file.
@param[in] Mtftp4 MTFTP4 protocol interface
@param[in] FilePath Path of the file, Ascii encoded
@param[out] FileSize Address where to store the file size in number of
bytes.
@retval EFI_SUCCESS The size of the file was returned.
@retval !EFI_SUCCESS The size of the file was not returned.
**/
STATIC
EFI_STATUS
Mtftp4GetFileSize (
IN EFI_MTFTP4_PROTOCOL *Mtftp4,
IN CHAR8 *FilePath,
OUT UINT64 *FileSize
)
{
EFI_STATUS Status;
EFI_MTFTP4_OPTION ReqOpt[1];
EFI_MTFTP4_PACKET *Packet;
UINT32 PktLen;
EFI_MTFTP4_OPTION *TableOfOptions;
EFI_MTFTP4_OPTION *Option;
UINT32 OptCnt;
UINT8 OptBuf[128];
ReqOpt[0].OptionStr = (UINT8*)"tsize";
OptBuf[0] = '0';
OptBuf[1] = 0;
ReqOpt[0].ValueStr = OptBuf;
Status = Mtftp4->GetInfo (
Mtftp4,
NULL,
(UINT8*)FilePath,
NULL,
1,
ReqOpt,
&PktLen,
&Packet
);
if (EFI_ERROR (Status)) {
goto Error;
}
Status = Mtftp4->ParseOptions (
Mtftp4,
PktLen,
Packet,
(UINT32 *) &OptCnt,
&TableOfOptions
);
if (EFI_ERROR (Status)) {
goto Error;
}
Option = TableOfOptions;
while (OptCnt != 0) {
if (AsciiStrnCmp ((CHAR8 *)Option->OptionStr, "tsize", 5) == 0) {
*FileSize = AsciiStrDecimalToUint64 ((CHAR8 *)Option->ValueStr);
break;
}
OptCnt--;
Option++;
}
FreePool (TableOfOptions);
if (OptCnt == 0) {
Status = EFI_UNSUPPORTED;
}
Error :
return Status;
}
/**
Update the progress of a file download
This procedure is called each time a new TFTP packet is received.
@param[in] This MTFTP4 protocol interface
@param[in] Token Parameters for the download of the file
@param[in] PacketLen Length of the packet
@param[in] Packet Address of the packet
@retval EFI_SUCCESS All packets are accepted.
**/
STATIC
EFI_STATUS
Mtftp4CheckPacket (
IN EFI_MTFTP4_PROTOCOL *This,
IN EFI_MTFTP4_TOKEN *Token,
IN UINT16 PacketLen,
IN EFI_MTFTP4_PACKET *Packet
)
{
BDS_TFTP_CONTEXT *Context;
CHAR16 Progress[TFTP_PROGRESS_MESSAGE_SIZE];
UINT64 NbOfKb;
UINTN Index;
UINTN LastStep;
UINTN Step;
UINT64 LastNbOf50Kb;
UINT64 NbOf50Kb;
if ((NTOHS (Packet->OpCode)) == EFI_MTFTP4_OPCODE_DATA) {
Context = (BDS_TFTP_CONTEXT*)Token->Context;
if (Context->DownloadedNbOfBytes == 0) {
if (Context->FileSize > 0) {
Print (L"%s 0 Kb", mTftpProgressFrame);
} else {
Print (L" 0 Kb");
}
}
//
// The data is the packet are prepended with two UINT16 :
// . OpCode = EFI_MTFTP4_OPCODE_DATA
// . Block = the number of this block of data
//
Context->DownloadedNbOfBytes += PacketLen - sizeof (Packet->OpCode) - sizeof (Packet->Data.Block);
NbOfKb = Context->DownloadedNbOfBytes / 1024;
Progress[0] = L'\0';
if (Context->FileSize > 0) {
LastStep = (Context->LastReportedNbOfBytes * TFTP_PROGRESS_SLIDER_STEPS) / Context->FileSize;
Step = (Context->DownloadedNbOfBytes * TFTP_PROGRESS_SLIDER_STEPS) / Context->FileSize;
if (Step > LastStep) {
Print (mTftpProgressDelete);
StrCpy (Progress, mTftpProgressFrame);
for (Index = 1; Index < Step; Index++) {
Progress[Index] = L'=';
}
Progress[Step] = L'>';
UnicodeSPrint (
Progress + (sizeof (mTftpProgressFrame) / sizeof (CHAR16)) - 1,
sizeof (Progress) - sizeof (mTftpProgressFrame),
L" %7d Kb",
NbOfKb
);
Context->LastReportedNbOfBytes = Context->DownloadedNbOfBytes;
}
} else {
//
// Case when we do not know the size of the final file.
// We print the updated size every 50KB of downloaded data
//
LastNbOf50Kb = Context->LastReportedNbOfBytes / (50*1024);
NbOf50Kb = Context->DownloadedNbOfBytes / (50*1024);
if (NbOf50Kb > LastNbOf50Kb) {
Print (L"\b\b\b\b\b\b\b\b\b\b");
UnicodeSPrint (Progress, sizeof (Progress), L"%7d Kb", NbOfKb);
Context->LastReportedNbOfBytes = Context->DownloadedNbOfBytes;
}
}
if (Progress[0] != L'\0') {
Print (L"%s", Progress);
}
}
return EFI_SUCCESS;
}
/**
Download an image from a TFTP server
@param[in] DevicePath Device path of the TFTP boot option
@param[in] ControllerHandle Handle of the network controller
@param[in] RemainingDevicePath Device path of the TFTP boot option but
the first node that identifies the network controller
@param[in] Type Type to allocate memory pages
@param[out] Image Address of the bufer where the image is stored in
case of success
@param[out] ImageSize Size in number of bytes of the i;age in case of
success
@retval EFI_SUCCESS The image was returned.
@retval !EFI_SUCCESS Something went wrong.
**/
EFI_STATUS
BdsTftpLoadImage (
IN OUT EFI_DEVICE_PATH **DevicePath,
IN EFI_HANDLE ControllerHandle,
IN EFI_DEVICE_PATH *RemainingDevicePath,
IN EFI_ALLOCATE_TYPE Type,
IN OUT EFI_PHYSICAL_ADDRESS *Image,
OUT UINTN *ImageSize
)
{
EFI_STATUS Status;
EFI_HANDLE Dhcp4ChildHandle;
EFI_DHCP4_PROTOCOL *Dhcp4;
BOOLEAN Dhcp4ToStop;
EFI_HANDLE Mtftp4ChildHandle;
EFI_MTFTP4_PROTOCOL *Mtftp4;
DHCP4_OPTION ParaList;
EFI_DHCP4_PACKET_OPTION *OptionList[2];
EFI_DHCP4_CONFIG_DATA Dhcp4CfgData;
EFI_DHCP4_MODE_DATA Dhcp4Mode;
EFI_MTFTP4_CONFIG_DATA Mtftp4CfgData;
IPv4_DEVICE_PATH *IPv4DevicePathNode;
CHAR16 *PathName;
CHAR8 *AsciiFilePath;
EFI_MTFTP4_TOKEN Mtftp4Token;
UINT64 FileSize;
UINT64 TftpBufferSize;
BDS_TFTP_CONTEXT *TftpContext;
ASSERT(IS_DEVICE_PATH_NODE (RemainingDevicePath, MESSAGING_DEVICE_PATH, MSG_IPv4_DP));
IPv4DevicePathNode = (IPv4_DEVICE_PATH*)RemainingDevicePath;
Dhcp4ChildHandle = NULL;
Dhcp4 = NULL;
Dhcp4ToStop = FALSE;
Mtftp4ChildHandle = NULL;
Mtftp4 = NULL;
AsciiFilePath = NULL;
TftpContext = NULL;
if (!IPv4DevicePathNode->StaticIpAddress) {
//
// Using the DHCP4 Service Binding Protocol, create a child handle of the DHCP4 service and
// install the DHCP4 protocol on it. Then, open the DHCP protocol.
//
Status = NetLibCreateServiceChild (
ControllerHandle,
gImageHandle,
&gEfiDhcp4ServiceBindingProtocolGuid,
&Dhcp4ChildHandle
);
if (!EFI_ERROR (Status)) {
Status = gBS->OpenProtocol (
Dhcp4ChildHandle,
&gEfiDhcp4ProtocolGuid,
(VOID **) &Dhcp4,
gImageHandle,
ControllerHandle,
EFI_OPEN_PROTOCOL_BY_DRIVER
);
}
if (EFI_ERROR (Status)) {
Print (L"Unable to open DHCP4 protocol\n");
goto Error;
}
}
//
// Using the MTFTP4 Service Binding Protocol, create a child handle of the MTFTP4 service and
// install the MTFTP4 protocol on it. Then, open the MTFTP4 protocol.
//
Status = NetLibCreateServiceChild (
ControllerHandle,
gImageHandle,
&gEfiMtftp4ServiceBindingProtocolGuid,
&Mtftp4ChildHandle
);
if (!EFI_ERROR (Status)) {
Status = gBS->OpenProtocol (
Mtftp4ChildHandle,
&gEfiMtftp4ProtocolGuid,
(VOID **) &Mtftp4,
gImageHandle,
ControllerHandle,
EFI_OPEN_PROTOCOL_BY_DRIVER
);
}
if (EFI_ERROR (Status)) {
Print (L"Unable to open MTFTP4 protocol\n");
goto Error;
}
if (!IPv4DevicePathNode->StaticIpAddress) {
//
// Configure the DHCP4, all default settings. It is acceptable for the configuration to
// fail if the return code is equal to EFI_ACCESS_DENIED which means that the configuration
// has been done by another instance of the DHCP4 protocol or that the DHCP configuration
// process has been started but is not completed yet.
//
ZeroMem (&Dhcp4CfgData, sizeof (EFI_DHCP4_CONFIG_DATA));
ParaList.Head.OpCode = DHCP_TAG_PARA_LIST;
ParaList.Head.Length = 2;
ParaList.Head.Data[0] = DHCP_TAG_NETMASK;
ParaList.Route = DHCP_TAG_ROUTER;
OptionList[0] = &ParaList.Head;
Dhcp4CfgData.OptionCount = 1;
Dhcp4CfgData.OptionList = OptionList;
Status = Dhcp4->Configure (Dhcp4, &Dhcp4CfgData);
if (EFI_ERROR (Status)) {
if (Status != EFI_ACCESS_DENIED) {
Print (L"Error while configuring the DHCP4 protocol\n");
goto Error;
}
}
//
// Start the DHCP configuration. This may have already been done thus do not leave in error
// if the return code is EFI_ALREADY_STARTED.
//
Status = Dhcp4->Start (Dhcp4, NULL);
if (EFI_ERROR (Status)) {
if (Status != EFI_ALREADY_STARTED) {
Print (L"DHCP configuration failed\n");
goto Error;
}
} else {
Dhcp4ToStop = TRUE;
}
Status = Dhcp4->GetModeData (Dhcp4, &Dhcp4Mode);
if (EFI_ERROR (Status)) {
goto Error;
}
if (Dhcp4Mode.State != Dhcp4Bound) {
Status = EFI_TIMEOUT;
Print (L"DHCP configuration failed\n");
goto Error;
}
}
//
// Configure the TFTP4 protocol
//
ZeroMem (&Mtftp4CfgData, sizeof (EFI_MTFTP4_CONFIG_DATA));
Mtftp4CfgData.UseDefaultSetting = FALSE;
Mtftp4CfgData.TimeoutValue = 4;
Mtftp4CfgData.TryCount = 6;
if (IPv4DevicePathNode->StaticIpAddress) {
CopyMem (&Mtftp4CfgData.StationIp , &IPv4DevicePathNode->LocalIpAddress, sizeof (EFI_IPv4_ADDRESS));
CopyMem (&Mtftp4CfgData.SubnetMask, &IPv4DevicePathNode->SubnetMask, sizeof (EFI_IPv4_ADDRESS));
CopyMem (&Mtftp4CfgData.GatewayIp , &IPv4DevicePathNode->GatewayIpAddress, sizeof (EFI_IPv4_ADDRESS));
} else {
CopyMem (&Mtftp4CfgData.StationIp , &Dhcp4Mode.ClientAddress, sizeof (EFI_IPv4_ADDRESS));
CopyMem (&Mtftp4CfgData.SubnetMask, &Dhcp4Mode.SubnetMask , sizeof (EFI_IPv4_ADDRESS));
CopyMem (&Mtftp4CfgData.GatewayIp , &Dhcp4Mode.RouterAddress, sizeof (EFI_IPv4_ADDRESS));
}
CopyMem (&Mtftp4CfgData.ServerIp , &IPv4DevicePathNode->RemoteIpAddress, sizeof (EFI_IPv4_ADDRESS));
Status = Mtftp4->Configure (Mtftp4, &Mtftp4CfgData);
if (EFI_ERROR (Status)) {
Print (L"Error while configuring the MTFTP4 protocol\n");
goto Error;
}
// The Device Path might contain multiple FilePath nodes
PathName = ConvertDevicePathToText ((EFI_DEVICE_PATH_PROTOCOL*)(IPv4DevicePathNode + 1), FALSE, FALSE);
AsciiFilePath = AllocatePool (StrLen (PathName) + 1);
UnicodeStrToAsciiStr (PathName, AsciiFilePath);
//
// Try to get the size of the file in bytes from the server. If it fails,
// start with a 8MB buffer to download the file.
//
FileSize = 0;
if (Mtftp4GetFileSize (Mtftp4, AsciiFilePath, &FileSize) == EFI_SUCCESS) {
TftpBufferSize = FileSize;
} else {
TftpBufferSize = SIZE_16MB;
}
TftpContext = AllocatePool (sizeof (BDS_TFTP_CONTEXT));
if (TftpContext == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto Error;
}
TftpContext->FileSize = FileSize;
for (; TftpBufferSize <= FixedPcdGet32 (PcdMaxTftpFileSize);
TftpBufferSize = (TftpBufferSize + SIZE_16MB) & (~(SIZE_16MB-1))) {
//
// Allocate a buffer to hold the whole file.
//
Status = gBS->AllocatePages (
Type,
EfiBootServicesCode,
EFI_SIZE_TO_PAGES (TftpBufferSize),
Image
);
if (EFI_ERROR (Status)) {
Print (L"Failed to allocate space for image\n");
goto Error;
}
TftpContext->DownloadedNbOfBytes = 0;
TftpContext->LastReportedNbOfBytes = 0;
ZeroMem (&Mtftp4Token, sizeof (EFI_MTFTP4_TOKEN));
Mtftp4Token.Filename = (UINT8*)AsciiFilePath;
Mtftp4Token.BufferSize = TftpBufferSize;
Mtftp4Token.Buffer = (VOID *)(UINTN)*Image;
Mtftp4Token.CheckPacket = Mtftp4CheckPacket;
Mtftp4Token.Context = (VOID*)TftpContext;
Print (L"Downloading the file <%a> from the TFTP server\n", AsciiFilePath);
Status = Mtftp4->ReadFile (Mtftp4, &Mtftp4Token);
Print (L"\n");
if (EFI_ERROR (Status)) {
gBS->FreePages (*Image, EFI_SIZE_TO_PAGES (TftpBufferSize));
if (Status == EFI_BUFFER_TOO_SMALL) {
Print (L"Downloading failed, file larger than expected.\n");
continue;
} else {
goto Error;
}
}
*ImageSize = Mtftp4Token.BufferSize;
break;
}
Error:
if (Dhcp4ChildHandle != NULL) {
if (Dhcp4 != NULL) {
if (Dhcp4ToStop) {
Dhcp4->Stop (Dhcp4);
}
gBS->CloseProtocol (
Dhcp4ChildHandle,
&gEfiDhcp4ProtocolGuid,
gImageHandle,
ControllerHandle
);
}
NetLibDestroyServiceChild (
ControllerHandle,
gImageHandle,
&gEfiDhcp4ServiceBindingProtocolGuid,
Dhcp4ChildHandle
);
}
if (Mtftp4ChildHandle != NULL) {
if (Mtftp4 != NULL) {
if (AsciiFilePath != NULL) {
FreePool (AsciiFilePath);
}
if (TftpContext != NULL) {
FreePool (TftpContext);
}
gBS->CloseProtocol (
Mtftp4ChildHandle,
&gEfiMtftp4ProtocolGuid,
gImageHandle,
ControllerHandle
);
}
NetLibDestroyServiceChild (
ControllerHandle,
gImageHandle,
&gEfiMtftp4ServiceBindingProtocolGuid,
Mtftp4ChildHandle
);
}
if (EFI_ERROR (Status)) {
*Image = 0;
Print (L"Failed to download the file - Error=%r\n", Status);
}
return Status;
}
BDS_FILE_LOADER FileLoaders[] = {
{ BdsFileSystemSupport, BdsFileSystemLoadImage },
{ BdsFirmwareVolumeSupport, BdsFirmwareVolumeLoadImage },
//{ BdsLoadFileSupport, BdsLoadFileLoadImage },
{ BdsMemoryMapSupport, BdsMemoryMapLoadImage },
{ BdsPxeSupport, BdsPxeLoadImage },
{ BdsTftpSupport, BdsTftpLoadImage },
{ NULL, NULL }
};
EFI_STATUS
BdsLoadImageAndUpdateDevicePath (
IN OUT EFI_DEVICE_PATH **DevicePath,
IN EFI_ALLOCATE_TYPE Type,
IN OUT EFI_PHYSICAL_ADDRESS* Image,
OUT UINTN *FileSize
)
{
EFI_STATUS Status;
EFI_HANDLE Handle;
EFI_DEVICE_PATH *RemainingDevicePath;
BDS_FILE_LOADER* FileLoader;
Status = BdsConnectAndUpdateDevicePath (DevicePath, &Handle, &RemainingDevicePath);
if (EFI_ERROR (Status)) {
return Status;
}
FileLoader = FileLoaders;
while (FileLoader->Support != NULL) {
if (FileLoader->Support (*DevicePath, Handle, RemainingDevicePath)) {
return FileLoader->LoadImage (DevicePath, Handle, RemainingDevicePath, Type, Image, FileSize);
}
FileLoader++;
}
return EFI_UNSUPPORTED;
}
EFI_STATUS
BdsLoadImage (
IN EFI_DEVICE_PATH *DevicePath,
IN EFI_ALLOCATE_TYPE Type,
IN OUT EFI_PHYSICAL_ADDRESS* Image,
OUT UINTN *FileSize
)
{
return BdsLoadImageAndUpdateDevicePath (&DevicePath, Type, Image, FileSize);
}
/**
Start an EFI Application from a Device Path
@param ParentImageHandle Handle of the calling image
@param DevicePath Location of the EFI Application
@retval EFI_SUCCESS All drivers have been connected
@retval EFI_NOT_FOUND The Linux kernel Device Path has not been found
@retval EFI_OUT_OF_RESOURCES There is not enough resource memory to store the matching results.
**/
EFI_STATUS
BdsStartEfiApplication (
IN EFI_HANDLE ParentImageHandle,
IN EFI_DEVICE_PATH_PROTOCOL *DevicePath,
IN UINTN LoadOptionsSize,
IN VOID* LoadOptions
)
{
EFI_STATUS Status;
EFI_HANDLE ImageHandle;
EFI_PHYSICAL_ADDRESS BinaryBuffer;
UINTN BinarySize;
EFI_LOADED_IMAGE_PROTOCOL* LoadedImage;
// Find the nearest supported file loader
Status = BdsLoadImageAndUpdateDevicePath (&DevicePath, AllocateAnyPages, &BinaryBuffer, &BinarySize);
if (EFI_ERROR (Status)) {
return Status;
}
// Load the image from the Buffer with Boot Services function
Status = gBS->LoadImage (TRUE, ParentImageHandle, DevicePath, (VOID*)(UINTN)BinaryBuffer, BinarySize, &ImageHandle);
if (EFI_ERROR (Status)) {
return Status;
}
// Passed LoadOptions to the EFI Application
if (LoadOptionsSize != 0) {
Status = gBS->HandleProtocol (ImageHandle, &gEfiLoadedImageProtocolGuid, (VOID **) &LoadedImage);
if (EFI_ERROR (Status)) {
return Status;
}
LoadedImage->LoadOptionsSize = LoadOptionsSize;
LoadedImage->LoadOptions = LoadOptions;
}
// Before calling the image, enable the Watchdog Timer for the 5 Minute period
gBS->SetWatchdogTimer (5 * 60, 0x0000, 0x00, NULL);
// Start the image
Status = gBS->StartImage (ImageHandle, NULL, NULL);
// Clear the Watchdog Timer after the image returns
gBS->SetWatchdogTimer (0x0000, 0x0000, 0x0000, NULL);
return Status;
}