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mirror_edk2/ArmPkg/Library/BdsLib/BdsFilePath.c
Ronald Cron 3402aac7d9 ARM Packages: Removed trailing spaces 
Trailing spaces create issue/warning when generating/applying patches.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
Reviewed-By: Olivier Martin <olivier.martin@arm.com>



git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15833 6f19259b-4bc3-4df7-8a09-765794883524
2014-08-19 13:29:52 +00:00

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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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