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/** @file
Copyright (c) 2013-2015, ARM Ltd. All rights reserved.<BR>
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 "AndroidFastbootApp.h"
#include <Protocol/DevicePath.h>
#include <Protocol/LoadedImage.h>
#include <Library/BdsLib.h>
#include <Library/DevicePathLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/UefiLib.h>
// Device Path representing an image in memory
#pragma pack(1)
typedef struct {
MEMMAP_DEVICE_PATH Node1;
EFI_DEVICE_PATH_PROTOCOL End;
} MEMORY_DEVICE_PATH;
#pragma pack()
STATIC CONST MEMORY_DEVICE_PATH MemoryDevicePathTemplate =
{
{
{
HARDWARE_DEVICE_PATH,
HW_MEMMAP_DP,
{
(UINT8)(sizeof (MEMMAP_DEVICE_PATH)),
(UINT8)((sizeof (MEMMAP_DEVICE_PATH)) >> 8),
},
}, // Header
0, // StartingAddress (set at runtime)
0 // EndingAddress (set at runtime)
}, // Node1
{
END_DEVICE_PATH_TYPE,
END_ENTIRE_DEVICE_PATH_SUBTYPE,
{ sizeof (EFI_DEVICE_PATH_PROTOCOL), 0 }
} // End
};
/**
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.
**/
STATIC
EFI_STATUS
StartEfiApplication (
IN EFI_HANDLE ParentImageHandle,
IN EFI_DEVICE_PATH_PROTOCOL *DevicePath,
IN UINTN LoadOptionsSize,
IN VOID* LoadOptions
)
{
EFI_STATUS Status;
EFI_HANDLE ImageHandle;
EFI_LOADED_IMAGE_PROTOCOL* LoadedImage;
// Load the image from the device path with Boot Services function
Status = gBS->LoadImage (TRUE, ParentImageHandle, DevicePath, NULL, 0,
&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;
}
EFI_STATUS
BootAndroidBootImg (
IN UINTN BufferSize,
IN VOID *Buffer
)
{
EFI_STATUS Status;
CHAR8 KernelArgs[ANDROID_BOOTIMG_KERNEL_ARGS_SIZE];
VOID *Kernel;
UINTN KernelSize;
VOID *Ramdisk;
UINTN RamdiskSize;
MEMORY_DEVICE_PATH KernelDevicePath;
CHAR16 *LoadOptions, *NewLoadOptions;
Status = ParseAndroidBootImg (
Buffer,
&Kernel,
&KernelSize,
&Ramdisk,
&RamdiskSize,
KernelArgs
);
if (EFI_ERROR (Status)) {
return Status;
}
KernelDevicePath = MemoryDevicePathTemplate;
// Have to cast to UINTN before casting to EFI_PHYSICAL_ADDRESS in order to
// appease GCC.
KernelDevicePath.Node1.StartingAddress = (EFI_PHYSICAL_ADDRESS)(UINTN) Kernel;
KernelDevicePath.Node1.EndingAddress = (EFI_PHYSICAL_ADDRESS)(UINTN) Kernel + KernelSize;
// Initialize Linux command line
LoadOptions = CatSPrint (NULL, L"%a", KernelArgs);
if (LoadOptions == NULL) {
return EFI_OUT_OF_RESOURCES;
}
if (RamdiskSize != 0) {
NewLoadOptions = CatSPrint (LoadOptions, L" initrd=0x%x,0x%x",
(UINTN)Ramdisk, RamdiskSize);
FreePool (LoadOptions);
if (NewLoadOptions == NULL) {
return EFI_OUT_OF_RESOURCES;
}
LoadOptions = NewLoadOptions;
}
Status = StartEfiApplication (gImageHandle,
(EFI_DEVICE_PATH_PROTOCOL *) &KernelDevicePath,
StrSize (LoadOptions),
LoadOptions);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "Couldn't Boot Linux: %d\n", Status));
Status = EFI_DEVICE_ERROR;
goto FreeLoadOptions;
}
// If we got here we do a confused face because BootLinuxFdt returned,
// reporting success.
DEBUG ((EFI_D_ERROR, "WARNING: BdsBootLinuxFdt returned EFI_SUCCESS.\n"));
return EFI_SUCCESS;
FreeLoadOptions:
FreePool (LoadOptions);
return Status;
}
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