6332ffb0af
Remove the option to update the "Fdt" UEFI variable in the ARM BDS as the "setfdt" EFI Shell command provides this service from now. Remove the use of this variable in the legacy kernel boot loader and use the FDT installed in the configuration table instead. 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@16940 6f19259b-4bc3-4df7-8a09-765794883524
104 lines
3.4 KiB
C
104 lines
3.4 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* 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
|
|
DevicePathKernel = FileDevicePath (LoadedImage->DeviceHandle, LINUX_KERNEL_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);
|
|
|
|
if ((UINTN)OptionalDataInitrd & 0x1) {
|
|
FreePool (Initrd);
|
|
}
|
|
|
|
FreePool (DevicePathKernel);
|
|
if (InitrdDevicePath) {
|
|
FreePool (InitrdDevicePath);
|
|
}
|
|
}
|
|
|
|
return Status;
|
|
}
|