48557c6550
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@7105 6f19259b-4bc3-4df7-8a09-765794883524
74 lines
2.1 KiB
C
74 lines
2.1 KiB
C
/** @file
|
|
EBC-specific functionality for DxeLoad.
|
|
|
|
Copyright (c) 2006 - 2008, Intel Corporation. <BR>
|
|
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 "DxeIpl.h"
|
|
|
|
|
|
|
|
/**
|
|
Transfers control to DxeCore.
|
|
|
|
This function performs a CPU architecture specific operations to execute
|
|
the entry point of DxeCore with the parameters of HobList.
|
|
It also installs EFI_END_OF_PEI_PPI to signal the end of PEI phase.
|
|
|
|
@param DxeCoreEntryPoint The entry point of DxeCore.
|
|
@param HobList The start of HobList passed to DxeCore.
|
|
|
|
**/
|
|
VOID
|
|
HandOffToDxeCore (
|
|
IN EFI_PHYSICAL_ADDRESS DxeCoreEntryPoint,
|
|
IN EFI_PEI_HOB_POINTERS HobList
|
|
)
|
|
{
|
|
VOID *BaseOfStack;
|
|
VOID *TopOfStack;
|
|
EFI_STATUS Status;
|
|
|
|
//
|
|
// Allocate 128KB for the Stack
|
|
//
|
|
BaseOfStack = AllocatePages (EFI_SIZE_TO_PAGES (STACK_SIZE));
|
|
ASSERT (BaseOfStack != NULL);
|
|
|
|
//
|
|
// Compute the top of the stack we were allocated. Pre-allocate a UINTN
|
|
// for safety.
|
|
//
|
|
TopOfStack = (VOID *) ((UINTN) BaseOfStack + EFI_SIZE_TO_PAGES (STACK_SIZE) * EFI_PAGE_SIZE - CPU_STACK_ALIGNMENT);
|
|
TopOfStack = ALIGN_POINTER (TopOfStack, CPU_STACK_ALIGNMENT);
|
|
|
|
//
|
|
// End of PEI phase signal
|
|
//
|
|
Status = PeiServicesInstallPpi (&gEndOfPeiSignalPpi);
|
|
ASSERT_EFI_ERROR (Status);
|
|
|
|
//
|
|
// Update the contents of BSP stack HOB to reflect the real stack info passed to DxeCore.
|
|
//
|
|
UpdateStackHob ((EFI_PHYSICAL_ADDRESS)(UINTN) BaseOfStack, STACK_SIZE);
|
|
|
|
//
|
|
// Transfer the control to the entry point of DxeCore.
|
|
//
|
|
SwitchStack (
|
|
(SWITCH_STACK_ENTRY_POINT)(UINTN)DxeCoreEntryPoint,
|
|
HobList.Raw,
|
|
NULL,
|
|
TopOfStack
|
|
);
|
|
}
|