tyler.durden
/
audk
mirror of https://github.com/acidanthera/audk.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Add support for PI1.2.1 TempRam Done PPI. 

Signed-off-by: Liming Gao <liming.gao@intel.com>
Reviewed-by: Jeff Fan <jeff.fan@intel.com>


git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14846 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Liming Gao 2013-11-15 02:04:57 +00:00 committed by lgao4
parent d59fc24497
commit fcfd5fb01b
4 changed files with 96 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

52
MdePkg/Include/Ppi/TemporaryRamDone.h Normal file
View File

@ -0,0 +1,52 @@
/** @file
This file declares Temporary RAM Done PPI.
The PPI that provides a service to disable the use of Temporary RAM.
Copyright (c) 2013, Intel Corporation. All rights reserved.<BR>
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.
@par Revision Reference:
This PPI is introduced in PI Version 1.2.
**/
#ifndef __TEMPORARY_RAM_DONE_H__
#define __TEMPORARY_RAM_DONE_H__
#define EFI_PEI_TEMPORARY_RAM_DONE_PPI_GUID \
{ 0xceab683c, 0xec56, 0x4a2d, { 0xa9, 0x6, 0x40, 0x53, 0xfa, 0x4e, 0x9c, 0x16 } }
/**
TemporaryRamDone() disables the use of Temporary RAM. If present, this service is invoked
by the PEI Foundation after the EFI_PEI_PERMANANT_MEMORY_INSTALLED_PPI is installed.
@retval EFI_SUCCESS Use of Temporary RAM was disabled.
@retval EFI_INVALID_PARAMETER Temporary RAM could not be disabled.
**/
typedef
EFI_STATUS
(EFIAPI * EFI_PEI_TEMPORARY_RAM_DONE) (
VOID
);
///
/// This is an optional PPI that may be produced by SEC or a PEIM. If present, it provide a service to
/// disable the use of Temporary RAM. This service may only be called by the PEI Foundation after the
/// transition from Temporary RAM to Permanent RAM is complete. This PPI provides an alternative
/// to the Temporary RAM Migration PPI for system architectures that allow Temporary RAM and
/// Permanent RAM to be enabled and accessed at the same time with no side effects.
///
typedef struct _EFI_PEI_TEMPORARY_RAM_DONE_PPI {
EFI_PEI_TEMPORARY_RAM_DONE TemporaryRamDone;
} EFI_PEI_TEMPORARY_RAM_DONE_PPI;
extern EFI_GUID gEfiTemporaryRamDonePpiGuid;
#endif

40
MdePkg/Library/PeiServicesTablePointerLibIdt/PeiServicesTablePointer.c
View File

@ -4,7 +4,7 @@
According to PI specification, the peiservice pointer is stored prior at IDT
table in IA32 and x64 architecture.
Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2006 - 2013, Intel Corporation. All rights reserved.<BR>
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
@ -20,6 +20,8 @@
#include <Library/BaseLib.h>
#include <Library/PeiServicesTablePointerLib.h>
#include <Library/DebugLib.h>
#include <Library/BaseMemoryLib.h>
#include <Ppi/TemporaryRamSupport.h>
/**
Retrieves the cached value of the PEI Services Table pointer.
@ -67,11 +69,43 @@ SetPeiServicesTablePointer (
IN CONST EFI_PEI_SERVICES ** PeiServicesTablePointer
)
{
IA32_DESCRIPTOR Idtr;
IA32_DESCRIPTOR Idtr;
EFI_PHYSICAL_ADDRESS IdtBase;
EFI_STATUS Status;
EFI_PEI_TEMPORARY_RAM_SUPPORT_PPI *TemporaryRamSupportPpi;
ASSERT (PeiServicesTablePointer != NULL);
AsmReadIdtr (&Idtr);
(*(UINTN*)(Idtr.Base - sizeof (UINTN))) = (UINTN)PeiServicesTablePointer;
if ((*(UINTN*)(Idtr.Base - sizeof (UINTN))) != (UINTN)PeiServicesTablePointer) {
(*(UINTN*)(Idtr.Base - sizeof (UINTN))) = (UINTN)PeiServicesTablePointer;
Status = (*PeiServicesTablePointer)->LocatePpi (
PeiServicesTablePointer,
&gEfiTemporaryRamSupportPpiGuid,
0,
NULL,
(VOID**)&TemporaryRamSupportPpi
);
if (EFI_ERROR (Status)) {
//
// If TemporaryRamSupportPpi is not found, Idt table needs to be migrated into memory.
//
Status = (*PeiServicesTablePointer)->AllocatePages (
PeiServicesTablePointer,
EfiBootServicesCode,
EFI_SIZE_TO_PAGES(Idtr.Limit + 1 + sizeof (UINTN)),
&IdtBase
);
if (!EFI_ERROR (Status)) {
//
// Migrate Idt table
//
CopyMem ((VOID *) (UINTN) IdtBase, (VOID *) (Idtr.Base - sizeof (UINTN)), Idtr.Limit + 1 + sizeof (UINTN));
Idtr.Base = (UINTN) IdtBase + sizeof (UINTN);
AsmWriteIdtr (&Idtr);
}
}
}
}

7
MdePkg/Library/PeiServicesTablePointerLibIdt/PeiServicesTablePointerLibIdt.inf
View File

@ -4,7 +4,7 @@
# PEI Services Table Pointer Library implementation that retrieves a pointer to the PEI
# Services Table from the IDT on IA-32 and x64.
#
# Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
# Copyright (c) 2006 - 2013, Intel Corporation. All rights reserved.<BR>
#
# This program and the accompanying materials
# are licensed and made available under the terms and conditions of the BSD License
@ -39,6 +39,7 @@
[LibraryClasses]
DebugLib
BaseLib
BaseMemoryLib
[Ppis]
gEfiTemporaryRamSupportPpiGuid ## SOMETIMES_CONSUMES

3
MdePkg/MdePkg.dec
View File

@ -695,6 +695,9 @@
## Include/Ppi/PiPcd.h
gEfiPeiPcdPpiGuid = { 0x1f34d25, 0x4de2, 0x23ad, { 0x3f, 0xf3, 0x36, 0x35, 0x3f, 0xf3, 0x23, 0xf1 } }
## Include/Ppi/TemporaryRamDone.h
gEfiTemporaryRamDonePpiGuid = { 0xceab683c, 0xec56, 0x4a2d, { 0xa9, 0x6, 0x40, 0x53, 0xfa, 0x4e, 0x9c, 0x16 } }
#
# PPIs defined in PI 1.3.
#