eeb1cd5af3
2. Added SwitchIplStacks() function to DxeIplPeim to encapsulate arch details on stack switching. 3. Added PeiSwitchStacks() function to PeiMain to encapsulate arch details on stack switching. git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@1328 6f19259b-4bc3-4df7-8a09-765794883524
112 lines
2.9 KiB
C
112 lines
2.9 KiB
C
/*++
|
|
|
|
Copyright (c) 2006, Intel Corporation
|
|
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.
|
|
|
|
Module Name:
|
|
|
|
IpfDxeLoad.c
|
|
|
|
Abstract:
|
|
|
|
Ipf-specifc functionality for DxeLoad.
|
|
|
|
--*/
|
|
|
|
#include <DxeIpl.h>
|
|
|
|
EFI_STATUS
|
|
CreateArchSpecificHobs (
|
|
OUT EFI_PHYSICAL_ADDRESS *BspStore
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Creates architecture-specific HOBs.
|
|
|
|
Note: New parameters should NOT be added for any HOBs that are added to this
|
|
function. BspStore is a special case because it is required for the
|
|
call to SwitchStacks() in DxeLoad().
|
|
|
|
Arguments:
|
|
|
|
BspStore - The address of the BSP Store for those architectures that need
|
|
it. Otherwise 0.
|
|
|
|
Returns:
|
|
|
|
EFI_SUCCESS - The HOBs were created successfully.
|
|
|
|
--*/
|
|
{
|
|
EFI_STATUS Status;
|
|
|
|
Status = EFI_SUCCESS;
|
|
|
|
ASSERT (NULL != BspStore);
|
|
|
|
//
|
|
// Allocate 16KB for the BspStore
|
|
//
|
|
Status = PeiServicesAllocatePages (EfiBootServicesData, EFI_SIZE_TO_PAGES (BSP_STORE_SIZE), BspStore);
|
|
if (EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
|
|
BuildBspStoreHob (
|
|
*BspStore,
|
|
BSP_STORE_SIZE,
|
|
EfiBootServicesData
|
|
);
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
/**
|
|
Transfers control to a function starting with a new stack.
|
|
|
|
Transfers control to the function specified by EntryPoint using the new stack
|
|
specified by NewStack and passing in the parameters specified by Context1 and
|
|
Context2. Context1 and Context2 are optional and may be NULL. The function
|
|
EntryPoint must never return.
|
|
|
|
If EntryPoint is NULL, then ASSERT().
|
|
If NewStack is NULL, then ASSERT().
|
|
|
|
@param EntryPoint A pointer to function to call with the new stack.
|
|
@param Context1 A pointer to the context to pass into the EntryPoint
|
|
function.
|
|
@param Context2 A pointer to the context to pass into the EntryPoint
|
|
function.
|
|
@param NewStack A pointer to the new stack to use for the EntryPoint
|
|
function.
|
|
@param NewBsp A pointer to the new BSP for the EntryPoint on IPF. It's
|
|
Reserved on other architectures.
|
|
|
|
**/
|
|
VOID
|
|
EFIAPI
|
|
SwitchIplStacks (
|
|
IN SWITCH_STACK_ENTRY_POINT EntryPoint,
|
|
IN VOID *Context1, OPTIONAL
|
|
IN VOID *Context2, OPTIONAL
|
|
IN VOID *NewStack,
|
|
IN VOID *NewBsp
|
|
)
|
|
{
|
|
AsmSwitchStackAndBackingStore (
|
|
EntryPoint,
|
|
Context1,
|
|
Context2,
|
|
NewStack,
|
|
NewBsp
|
|
);
|
|
}
|