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system76-edk2/ArmPkg/Library/BdsLib/BdsFilePath.c
Olivier Martin edc93a3191 ArmPkg/BdsLib: Prevent memory leak whith TFTP 
In some case, the size of the downloaded TFTP image cannot be known.
An arbitrary larger buffer is allocated to receive the image.
We need to make sure when we free the buffer we free the size
of the allocated buffer and not the size of the actual image.
 
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Olivier Martin <olivier.martin@arm.com>



git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15609 6f19259b-4bc3-4df7-8a09-765794883524
2014-07-01 09:27:19 +00:00

1025 lines
35 KiB
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/** @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 <Protocol/UsbIo.h>
#include <Protocol/DiskIo.h>
#include <Protocol/LoadedImage.h>
#include <Protocol/SimpleNetwork.h>
#define IS_DEVICE_PATH_NODE(node,type,subtype) (((node)->Type == (type)) && ((node)->SubType == (subtype)))
// 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;
if ((DevicePath == NULL) || (*DevicePath == NULL) || (Handle == NULL)) {
return EFI_INVALID_PARAMETER;
}
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)) {
// Recursive = FALSE: We do not want to start all the device tree
Status = gBS->ConnectController (*Handle, NULL, Remaining, FALSE);
}
/*// We need to check if RemainingDevicePath does not point on the last node. Otherwise, calling
// NextDevicePathNode () will return an undetermined Device Path Node
if (!IsDevicePathEnd (RemainingDevicePath)) {
RemainingDevicePath = NextDevicePathNode (RemainingDevicePath);
}*/
} 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 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
)
{
FILEPATH_DEVICE_PATH* FilePathDevicePath;
EFI_SIMPLE_FILE_SYSTEM_PROTOCOL *FsProtocol;
EFI_FILE_PROTOCOL *Fs;
EFI_STATUS Status;
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->HandleProtocol (Handle, &gEfiSimpleFileSystemProtocolGuid, (VOID **)&FsProtocol);
if (EFI_ERROR (Status)) {
return Status;
}
// Try to Open the volume and get root directory
Status = FsProtocol->OpenVolume (FsProtocol, &Fs);
if (EFI_ERROR (Status)) {
return Status;
}
File = NULL;
Status = Fs->Open (Fs, &File, FilePathDevicePath->PathName, EFI_FILE_MODE_READ, 0);
if (EFI_ERROR (Status)) {
return Status;
}
Size = 0;
File->GetInfo (File, &gEfiFileInfoGuid, &Size, NULL);
FileInfo = AllocatePool (Size);
Status = File->GetInfo (File, &gEfiFileInfoGuid, &Size, FileInfo);
if (EFI_ERROR (Status)) {
return Status;
}
// 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));
}
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 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 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*)(UINTN)(*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 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, DevicePath, 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, DevicePath, 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;
EFI_PXE_BASE_CODE_PROTOCOL *PxeBcProtocol;
// 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, &gEfiPxeBaseCodeProtocolGuid, (VOID **)&PxeBcProtocol);
if (EFI_ERROR (Status)) {
return FALSE;
} else {
return TRUE;
}
}
EFI_STATUS
BdsTftpLoadImage (
IN 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_PXE_BASE_CODE_PROTOCOL *Pxe;
UINT64 TftpBufferSize;
UINT64 TftpTransferSize;
EFI_IP_ADDRESS ServerIp;
IPv4_DEVICE_PATH* IPv4DevicePathNode;
FILEPATH_DEVICE_PATH* FilePathDevicePath;
EFI_IP_ADDRESS LocalIp;
CHAR8* AsciiPathName;
EFI_SIMPLE_NETWORK_PROTOCOL *Snp;
ASSERT(IS_DEVICE_PATH_NODE (RemainingDevicePath, MESSAGING_DEVICE_PATH, MSG_IPv4_DP));
IPv4DevicePathNode = (IPv4_DEVICE_PATH*)RemainingDevicePath;
FilePathDevicePath = (FILEPATH_DEVICE_PATH*)(IPv4DevicePathNode + 1);
Status = gBS->LocateProtocol (&gEfiPxeBaseCodeProtocolGuid, NULL, (VOID **)&Pxe);
if (EFI_ERROR (Status)) {
return Status;
}
Status = Pxe->Start (Pxe, FALSE);
if (EFI_ERROR (Status) && (Status != EFI_ALREADY_STARTED)) {
return Status;
}
do {
if (!IPv4DevicePathNode->StaticIpAddress) {
Status = Pxe->Dhcp (Pxe, TRUE);
} else {
CopyMem (&LocalIp.v4, &IPv4DevicePathNode->LocalIpAddress, sizeof (EFI_IPv4_ADDRESS));
Status = Pxe->SetStationIp (Pxe, &LocalIp, NULL);
}
// If an IP Address has already been set and a different static IP address is requested then restart
// the Network service.
if (Status == EFI_ALREADY_STARTED) {
Status = gBS->LocateProtocol (&gEfiSimpleNetworkProtocolGuid, NULL, (VOID **)&Snp);
if (!EFI_ERROR (Status) && IPv4DevicePathNode->StaticIpAddress &&
(CompareMem (&Snp->Mode->CurrentAddress, &IPv4DevicePathNode->LocalIpAddress, sizeof(EFI_MAC_ADDRESS)) != 0))
{
Pxe->Stop (Pxe);
Status = Pxe->Start (Pxe, FALSE);
if (EFI_ERROR(Status)) {
break;
}
// After restarting the PXE protocol, we want to try again with our new IP Address
Status = EFI_ALREADY_STARTED;
}
}
} while (Status == EFI_ALREADY_STARTED);
if (EFI_ERROR(Status)) {
return Status;
}
CopyMem (&ServerIp.v4, &IPv4DevicePathNode->RemoteIpAddress, sizeof (EFI_IPv4_ADDRESS));
// Convert the Unicode PathName to Ascii
AsciiPathName = AllocatePool ((StrLen (FilePathDevicePath->PathName) + 1) * sizeof (CHAR8));
if (AsciiPathName == NULL) {
return EFI_OUT_OF_RESOURCES;
}
UnicodeStrToAsciiStr (FilePathDevicePath->PathName, AsciiPathName);
// Try to get the size (required the TFTP server to have "tsize" extension)
Status = Pxe->Mtftp (
Pxe,
EFI_PXE_BASE_CODE_TFTP_GET_FILE_SIZE,
NULL,
FALSE,
&TftpBufferSize,
NULL,
&ServerIp,
(UINT8*)AsciiPathName,
NULL,
FALSE
);
// Pxe.Mtftp replies EFI_PROTOCOL_ERROR if tsize is not supported by the TFTP server
if (EFI_ERROR (Status) && (Status != EFI_PROTOCOL_ERROR)) {
if (Status == EFI_TFTP_ERROR) {
DEBUG((EFI_D_ERROR, "TFTP Error: Fail to get the size of the file\n"));
}
goto EXIT;
}
//
// Two cases:
// 1) the file size is unknown (tsize extension not supported)
// 2) tsize returned the file size
//
if (Status == EFI_PROTOCOL_ERROR) {
for (TftpBufferSize = SIZE_8MB; TftpBufferSize <= FixedPcdGet32 (PcdMaxTftpFileSize); TftpBufferSize += SIZE_8MB) {
// Allocate a buffer to hold the whole file.
Status = gBS->AllocatePages (
Type,
EfiBootServicesCode,
EFI_SIZE_TO_PAGES (TftpBufferSize),
Image
);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "Failed to allocate space for image: %r\n", Status));
goto EXIT;
}
TftpTransferSize = TftpBufferSize;
Status = Pxe->Mtftp (
Pxe,
EFI_PXE_BASE_CODE_TFTP_READ_FILE,
(VOID *)(UINTN)*Image,
FALSE,
&TftpTransferSize,
NULL,
&ServerIp,
(UINT8*)AsciiPathName,
NULL,
FALSE
);
if (EFI_ERROR (Status)) {
gBS->FreePages (*Image, EFI_SIZE_TO_PAGES (TftpBufferSize));
} else {
*ImageSize = (UINTN)TftpBufferSize;
break;
}
}
} else {
// Allocate a buffer to hold the whole file.
Status = gBS->AllocatePages (
Type,
EfiBootServicesCode,
EFI_SIZE_TO_PAGES (TftpBufferSize),
Image
);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "Failed to allocate space for kernel image: %r\n", Status));
goto EXIT;
}
Status = Pxe->Mtftp (
Pxe,
EFI_PXE_BASE_CODE_TFTP_READ_FILE,
(VOID *)(UINTN)*Image,
FALSE,
&TftpBufferSize,
NULL,
&ServerIp,
(UINT8*)AsciiPathName,
NULL,
FALSE
);
if (EFI_ERROR (Status)) {
gBS->FreePages (*Image, EFI_SIZE_TO_PAGES (TftpBufferSize));
} else {
*ImageSize = (UINTN)TftpBufferSize;
}
}
EXIT:
FreePool (AsciiPathName);
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;
}
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