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Store PeiServices** when updating IDT table in DxeIplPeim before transfer to long mode. 

Signed-off-by: vanjeff
Reviewed-by: rsun3
Reviewed-by: mdkinney



git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12580 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
vanjeff 2011-10-27 05:26:02 +00:00
parent 153a2bae71
commit bdfbe63efa
3 changed files with 25 additions and 5 deletions
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3
MdeModulePkg/Core/DxeIplPeim/DxeIpl.h
View File

@ -2,7 +2,7 @@
Master header file for DxeIpl PEIM. All source files in this module should
include this file for common definitions.
Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2006 - 2011, 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
@ -46,6 +46,7 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
#include <Library/S3Lib.h>
#include <Library/RecoveryLib.h>
#include <Library/DebugAgentLib.h>
#include <Library/PeiServicesTablePointerLib.h>
#define STACK_SIZE 0x20000
#define BSP_STORE_SIZE 0x4000

1
MdeModulePkg/Core/DxeIplPeim/DxeIpl.inf
View File

@ -73,6 +73,7 @@
PeimEntryPoint
DebugLib
DebugAgentLib
PeiServicesTablePointerLib
[Ppis]
gEfiDxeIplPpiGuid ## PRODUCES

26
MdeModulePkg/Core/DxeIplPeim/Ia32/DxeLoadFunc.c
View File

@ -1,7 +1,7 @@
/** @file
Ia32-specific functionality for DxeLoad.
Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2006 - 2011, 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
@ -17,6 +17,16 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
#define IDT_ENTRY_COUNT 32
typedef struct _X64_IDT_TABLE {
//
// Reserved 4 bytes preceding PeiService and IdtTable,
// since IDT base address should be 8-byte alignment.
//
UINT32 Reserved;
CONST EFI_PEI_SERVICES **PeiService;
X64_IDT_GATE_DESCRIPTOR IdtTable[IDT_ENTRY_COUNT];
} X64_IDT_TABLE;
//
// Global Descriptor Table (GDT)
//
@ -72,6 +82,7 @@ HandOffToDxeCore (
VOID *TemplateBase;
EFI_PHYSICAL_ADDRESS VectorAddress;
UINT32 Index;
X64_IDT_TABLE *IdtTableForX64;
Status = PeiServicesAllocatePages (EfiBootServicesData, EFI_SIZE_TO_PAGES (STACK_SIZE), &BaseOfStack);
ASSERT_EFI_ERROR (Status);
@ -120,12 +131,19 @@ HandOffToDxeCore (
Status = PeiServicesAllocatePages (
EfiBootServicesData,
EFI_SIZE_TO_PAGES((SizeOfTemplate + sizeof (X64_IDT_GATE_DESCRIPTOR)) * IDT_ENTRY_COUNT),
&VectorAddress
EFI_SIZE_TO_PAGES(sizeof (X64_IDT_TABLE) + SizeOfTemplate * IDT_ENTRY_COUNT),
(EFI_PHYSICAL_ADDRESS *) &IdtTableForX64
);
ASSERT_EFI_ERROR (Status);
IdtTable = (X64_IDT_GATE_DESCRIPTOR *) (UINTN) (VectorAddress + SizeOfTemplate * IDT_ENTRY_COUNT);
//
// Store EFI_PEI_SERVICES** in the 4 bytes immediately preceding IDT to avoid that
// it may not be gotten correctly after IDT register is re-written.
//
IdtTableForX64->PeiService = GetPeiServicesTablePointer ();
VectorAddress = (EFI_PHYSICAL_ADDRESS) (UINTN) (IdtTableForX64 + 1);
IdtTable = IdtTableForX64->IdtTable;
for (Index = 0; Index < IDT_ENTRY_COUNT; Index++) {
IdtTable[Index].Ia32IdtEntry.Bits.GateType = 0x8e;
IdtTable[Index].Ia32IdtEntry.Bits.Reserved_0 = 0;