mirror of https://github.com/acidanthera/audk.git
141 lines
4.5 KiB
C
141 lines
4.5 KiB
C
/** @file
|
|
|
|
Copyright (c) 2013-2014, ARM Ltd. All rights reserved.<BR>
|
|
Copyright (c) 2017, Linaro. 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 <Library/AndroidBootImgLib.h>
|
|
#include <Library/BaseMemoryLib.h>
|
|
#include <Library/DebugLib.h>
|
|
#include <Library/DevicePathLib.h>
|
|
#include <Library/MemoryAllocationLib.h>
|
|
#include <Library/UefiBootServicesTableLib.h>
|
|
|
|
#include <Protocol/BlockIo.h>
|
|
#include <Protocol/DevicePathFromText.h>
|
|
|
|
/* Validate the node is media hard drive type */
|
|
EFI_STATUS
|
|
ValidateAndroidMediaDevicePath (
|
|
IN EFI_DEVICE_PATH *DevicePath
|
|
)
|
|
{
|
|
EFI_DEVICE_PATH_PROTOCOL *Node, *NextNode;
|
|
|
|
NextNode = DevicePath;
|
|
while (NextNode != NULL) {
|
|
Node = NextNode;
|
|
if (Node->Type == MEDIA_DEVICE_PATH &&
|
|
Node->SubType == MEDIA_HARDDRIVE_DP) {
|
|
return EFI_SUCCESS;
|
|
}
|
|
NextNode = NextDevicePathNode (Node);
|
|
}
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
EFI_STATUS
|
|
EFIAPI
|
|
AndroidBootAppEntryPoint (
|
|
IN EFI_HANDLE ImageHandle,
|
|
IN EFI_SYSTEM_TABLE *SystemTable
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
CHAR16 *BootPathStr;
|
|
EFI_DEVICE_PATH_FROM_TEXT_PROTOCOL *EfiDevicePathFromTextProtocol;
|
|
EFI_DEVICE_PATH *DevicePath;
|
|
EFI_BLOCK_IO_PROTOCOL *BlockIo;
|
|
UINT32 MediaId, BlockSize;
|
|
VOID *Buffer;
|
|
EFI_HANDLE Handle;
|
|
UINTN BootImgSize;
|
|
|
|
BootPathStr = (CHAR16 *)PcdGetPtr (PcdAndroidBootDevicePath);
|
|
ASSERT (BootPathStr != NULL);
|
|
Status = gBS->LocateProtocol (&gEfiDevicePathFromTextProtocolGuid, NULL,
|
|
(VOID **)&EfiDevicePathFromTextProtocol);
|
|
ASSERT_EFI_ERROR(Status);
|
|
DevicePath = (EFI_DEVICE_PATH *)EfiDevicePathFromTextProtocol->ConvertTextToDevicePath (BootPathStr);
|
|
ASSERT (DevicePath != NULL);
|
|
|
|
Status = ValidateAndroidMediaDevicePath (DevicePath);
|
|
if (EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
|
|
Status = gBS->LocateDevicePath (&gEfiDevicePathProtocolGuid,
|
|
&DevicePath, &Handle);
|
|
if (EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
|
|
Status = gBS->OpenProtocol (
|
|
Handle,
|
|
&gEfiBlockIoProtocolGuid,
|
|
(VOID **) &BlockIo,
|
|
gImageHandle,
|
|
NULL,
|
|
EFI_OPEN_PROTOCOL_GET_PROTOCOL
|
|
);
|
|
if (EFI_ERROR (Status)) {
|
|
DEBUG ((DEBUG_ERROR, "Failed to get BlockIo: %r\n", Status));
|
|
return Status;
|
|
}
|
|
|
|
MediaId = BlockIo->Media->MediaId;
|
|
BlockSize = BlockIo->Media->BlockSize;
|
|
Buffer = AllocatePages (EFI_SIZE_TO_PAGES (sizeof(ANDROID_BOOTIMG_HEADER)));
|
|
if (Buffer == NULL) {
|
|
return EFI_BUFFER_TOO_SMALL;
|
|
}
|
|
/* Load header of boot.img */
|
|
Status = BlockIo->ReadBlocks (
|
|
BlockIo,
|
|
MediaId,
|
|
0,
|
|
BlockSize,
|
|
Buffer
|
|
);
|
|
Status = AndroidBootImgGetImgSize (Buffer, &BootImgSize);
|
|
if (EFI_ERROR (Status)) {
|
|
DEBUG ((DEBUG_ERROR, "Failed to get AndroidBootImg Size: %r\n", Status));
|
|
return Status;
|
|
}
|
|
BootImgSize = ALIGN_VALUE (BootImgSize, BlockSize);
|
|
FreePages (Buffer, EFI_SIZE_TO_PAGES (sizeof(ANDROID_BOOTIMG_HEADER)));
|
|
|
|
/* Both PartitionStart and PartitionSize are counted as block size. */
|
|
Buffer = AllocatePages (EFI_SIZE_TO_PAGES (BootImgSize));
|
|
if (Buffer == NULL) {
|
|
return EFI_BUFFER_TOO_SMALL;
|
|
}
|
|
|
|
/* Load header of boot.img */
|
|
Status = BlockIo->ReadBlocks (
|
|
BlockIo,
|
|
MediaId,
|
|
0,
|
|
BootImgSize,
|
|
Buffer
|
|
);
|
|
if (EFI_ERROR (Status)) {
|
|
DEBUG ((DEBUG_ERROR, "Failed to read blocks: %r\n", Status));
|
|
goto EXIT;
|
|
}
|
|
|
|
Status = AndroidBootImgBoot (Buffer, BootImgSize);
|
|
|
|
EXIT:
|
|
return Status;
|
|
}
|