Renamed remotely
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@6024 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
@@ -0,0 +1,152 @@
|
||||
/*++
|
||||
|
||||
Copyright (c) 2004 - 2007, 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:
|
||||
|
||||
PeiServicePointer.c
|
||||
|
||||
Abstract:
|
||||
|
||||
--*/
|
||||
|
||||
#include "Tiano.h"
|
||||
#include "PeiApi.h"
|
||||
#include "PeiLib.h"
|
||||
|
||||
#if (PI_SPECIFICATION_VERSION >= 0x00010000)
|
||||
|
||||
#ifdef EFI_NT_EMULATOR
|
||||
EFI_PEI_SERVICES **gPeiServices;
|
||||
#endif
|
||||
|
||||
|
||||
VOID
|
||||
SetPeiServicesTablePointer (
|
||||
IN EFI_PEI_SERVICES **PeiServices
|
||||
)
|
||||
/*++
|
||||
|
||||
Routine Description:
|
||||
|
||||
Save PeiService pointer so that it can be retrieved anywhere.
|
||||
|
||||
Arguments:
|
||||
|
||||
PeiServices - The direct pointer to PeiServiceTable.
|
||||
PhyscialAddress - The physcial address of variable PeiServices.
|
||||
|
||||
Returns:
|
||||
NONE
|
||||
|
||||
--*/
|
||||
{
|
||||
|
||||
#ifdef EFI_NT_EMULATOR
|
||||
|
||||
//
|
||||
// For NT32, set EFI_PEI_SERVICES** to global variable.
|
||||
//
|
||||
gPeiServices = PeiServices;
|
||||
#else
|
||||
|
||||
//
|
||||
// For X86 processor,the EFI_PEI_SERVICES** is stored in the
|
||||
// 4 bytes immediately preceding the Interrupt Descriptor Table.
|
||||
//
|
||||
UINTN IdtBaseAddress;
|
||||
IdtBaseAddress = (UINTN)ReadIdtBase();
|
||||
*(UINTN*)(IdtBaseAddress - 4) = (UINTN)PeiServices;
|
||||
|
||||
#endif
|
||||
}
|
||||
|
||||
|
||||
EFI_PEI_SERVICES **
|
||||
GetPeiServicesTablePointer (
|
||||
VOID
|
||||
)
|
||||
/*++
|
||||
|
||||
Routine Description:
|
||||
|
||||
Get PeiService pointer.
|
||||
|
||||
Arguments:
|
||||
|
||||
NONE.
|
||||
|
||||
Returns:
|
||||
The direct pointer to PeiServiceTable.
|
||||
|
||||
--*/
|
||||
{
|
||||
EFI_PEI_SERVICES **PeiServices;
|
||||
|
||||
#ifdef EFI_NT_EMULATOR
|
||||
|
||||
//
|
||||
// For NT32, set EFI_PEI_SERVICES** to global variable.
|
||||
//
|
||||
PeiServices = gPeiServices;
|
||||
#else
|
||||
|
||||
//
|
||||
// For X86 processor,the EFI_PEI_SERVICES** is stored in the
|
||||
// 4 bytes immediately preceding the Interrupt Descriptor Table.
|
||||
//
|
||||
UINTN IdtBaseAddress;
|
||||
IdtBaseAddress = (UINTN)ReadIdtBase();
|
||||
PeiServices = (EFI_PEI_SERVICES **)(UINTN)(*(UINTN*)(IdtBaseAddress - 4));
|
||||
#endif
|
||||
return PeiServices;
|
||||
}
|
||||
|
||||
|
||||
VOID
|
||||
MigrateIdtTable (
|
||||
IN EFI_PEI_SERVICES **PeiServices
|
||||
)
|
||||
/*++
|
||||
|
||||
Routine Description:
|
||||
|
||||
Migrate IDT from CAR to real memory where preceded with 4 bytes for
|
||||
storing PeiService pointer.
|
||||
|
||||
Arguments:
|
||||
|
||||
PeiServices - The direct pointer to PeiServiceTable.
|
||||
|
||||
Returns:
|
||||
|
||||
NONE.
|
||||
|
||||
--*/
|
||||
{
|
||||
#ifndef EFI_NT_EMULATOR
|
||||
UINT16 IdtEntrySize;
|
||||
UINTN OldIdtBase;
|
||||
UINTN Size;
|
||||
VOID *NewIdtBase;
|
||||
EFI_STATUS Status;
|
||||
|
||||
IdtEntrySize = ReadIdtLimit();
|
||||
OldIdtBase = ReadIdtBase();
|
||||
Size = sizeof(PEI_IDT_TABLE) + (IdtEntrySize + 1);
|
||||
Status = (*PeiServices)->AllocatePool (PeiServices, Size, &NewIdtBase);
|
||||
ASSERT_PEI_ERROR (PeiServices, Status);
|
||||
(*PeiServices)->CopyMem ((VOID*)((UINTN)NewIdtBase + sizeof(PEI_IDT_TABLE)), (VOID*)OldIdtBase, (IdtEntrySize + 1));
|
||||
SetIdtBase(((UINTN)NewIdtBase + sizeof(PEI_IDT_TABLE)), IdtEntrySize);
|
||||
SetPeiServicesTablePointer(PeiServices);
|
||||
#endif
|
||||
}
|
||||
|
||||
#endif
|
Reference in New Issue
Block a user