mirror of https://github.com/acidanthera/audk.git
106 lines
3.6 KiB
C
106 lines
3.6 KiB
C
/** @file
|
|
*
|
|
* Copyright (c) 2011, 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 "LinuxInternal.h"
|
|
|
|
#include <Library/PrintLib.h>
|
|
#include <Library/UefiApplicationEntryPoint.h>
|
|
|
|
/**
|
|
The user Entry Point for Application. The user code starts with this function
|
|
as the real entry point for the application.
|
|
|
|
@param[in] ImageHandle The firmware allocated handle for the EFI image.
|
|
@param[in] SystemTable A pointer to the EFI System Table.
|
|
|
|
@retval EFI_SUCCESS The entry point is executed successfully.
|
|
@retval other Some error occurs when executing this entry point.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
UefiMain (
|
|
IN EFI_HANDLE ImageHandle,
|
|
IN EFI_SYSTEM_TABLE *SystemTable
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
EFI_LOADED_IMAGE_PROTOCOL *LoadedImage;
|
|
LINUX_LOADER_OPTIONAL_DATA* LinuxOptionalData;
|
|
EFI_DEVICE_PATH* DevicePathKernel;
|
|
EFI_DEVICE_PATH* DevicePathFdt;
|
|
EFI_DEVICE_PATH* InitrdDevicePath;
|
|
CHAR16* OptionalDataInitrd;
|
|
CHAR8* OptionalDataArguments;
|
|
CHAR16* Initrd;
|
|
|
|
Status = gBS->HandleProtocol (ImageHandle, &gEfiLoadedImageProtocolGuid, (VOID **)&LoadedImage);
|
|
ASSERT_EFI_ERROR (Status);
|
|
|
|
if (LoadedImage->LoadOptionsSize == 0) {
|
|
Status = LinuxLoaderConfig (LoadedImage);
|
|
} else {
|
|
// Ensure the signature is correct
|
|
LinuxOptionalData = (LINUX_LOADER_OPTIONAL_DATA*)LoadedImage->LoadOptions;
|
|
if (LinuxOptionalData->Signature != LINUX_LOADER_SIGNATURE) {
|
|
return EFI_UNSUPPORTED;
|
|
}
|
|
|
|
// Generate the File Path Node for the Linux Kernel & Device Tree blob
|
|
DevicePathKernel = FileDevicePath (LoadedImage->DeviceHandle, LINUX_KERNEL_NAME);
|
|
DevicePathFdt = FileDevicePath (LoadedImage->DeviceHandle, FDT_NAME);
|
|
|
|
if (LinuxOptionalData->CmdLineLength > 0) {
|
|
OptionalDataArguments = (CHAR8*)LinuxOptionalData + sizeof(LINUX_LOADER_OPTIONAL_DATA);
|
|
} else {
|
|
OptionalDataArguments = NULL;
|
|
}
|
|
|
|
if (LinuxOptionalData->InitrdPathListLength > 0) {
|
|
if (OptionalDataArguments != NULL) {
|
|
OptionalDataInitrd = (CHAR16*)(OptionalDataArguments + LinuxOptionalData->CmdLineLength);
|
|
} else {
|
|
OptionalDataInitrd = (CHAR16*)LinuxOptionalData + sizeof(LINUX_LOADER_OPTIONAL_DATA);
|
|
}
|
|
|
|
// If pointer not aligned
|
|
if ((UINTN)OptionalDataInitrd & 0x1) {
|
|
Initrd = (CHAR16*)AllocateCopyPool (LinuxOptionalData->InitrdPathListLength, OptionalDataInitrd);
|
|
} else {
|
|
Initrd = OptionalDataInitrd;
|
|
}
|
|
|
|
InitrdDevicePath = FileDevicePath (LoadedImage->DeviceHandle, Initrd);
|
|
} else {
|
|
OptionalDataInitrd = NULL;
|
|
InitrdDevicePath = NULL;
|
|
Initrd = NULL;
|
|
}
|
|
|
|
// Load and Start the Linux Kernel (we should never return)
|
|
Status = BdsBootLinuxFdt (DevicePathKernel, InitrdDevicePath, OptionalDataArguments, DevicePathFdt);
|
|
|
|
if ((UINTN)OptionalDataInitrd & 0x1) {
|
|
FreePool (Initrd);
|
|
}
|
|
|
|
FreePool (DevicePathKernel);
|
|
if (InitrdDevicePath) {
|
|
FreePool (InitrdDevicePath);
|
|
}
|
|
}
|
|
|
|
return Status;
|
|
}
|