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Add initial version of Open Virtual Machine Firmware (OVMF) platform.

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git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@8398 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
jljusten
2009-05-27 21:10:18 +00:00
parent a1f11f7547
commit 49ba9447c9
51 changed files with 6799 additions and 0 deletions
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63
OvmfPkg/Sec/Ia32/SecEntry.S Normal file
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#
# ConvertAsm.py: Automatically generated from SecEntry.asm
#
# TITLE SecEntry.asm
#------------------------------------------------------------------------------
#*
#* Copyright 2006 - 2009, 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.
#*
#* CpuAsm.asm
#*
#* Abstract:
#*
#------------------------------------------------------------------------------
#include "SecMain.h"
#EXTERN ASM_PFX(SecCoreStartupWithStack)
#
# SecCore Entry Point
#
# Processor is in flat protected mode
#
# @param ESI Pointer to SEC Core Entry Point (this function)
# @param EDI Pointer to PEI Core Entry Point
# @param EBP Pointer to the start of the Boot Firmware Volume
#
# @return None
#
#
.intel_syntax
ASM_GLOBAL ASM_PFX(_ModuleEntryPoint)
ASM_PFX(_ModuleEntryPoint):
#
# Load temporary stack top at very low memory. The C code
# can reload to a better address.
#
mov eax, INITIAL_TOP_OF_STACK
mov esp, eax
nop
#
# Call into C code
#
push eax
push edi
push esi
push ebp
call ASM_PFX(SecCoreStartupWithStack)
#END

60
OvmfPkg/Sec/Ia32/SecEntry.asm Normal file
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TITLE SecEntry.asm
;------------------------------------------------------------------------------
;*
;* Copyright 2006 - 2009, 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.
;*
;* CpuAsm.asm
;*
;* Abstract:
;*
;------------------------------------------------------------------------------
#include "SecMain.h"
.686
.model flat,C
.code
EXTERN SecCoreStartupWithStack:PROC
;
; SecCore Entry Point
;
; Processor is in flat protected mode
;
; @param ESI Pointer to SEC Core Entry Point (this function)
; @param EDI Pointer to PEI Core Entry Point
; @param EBP Pointer to the start of the Boot Firmware Volume
;
; @return None
;
;
_ModuleEntryPoint PROC PUBLIC
;
; Load temporary stack top at very low memory. The C code
; can reload to a better address.
;
mov eax, INITIAL_TOP_OF_STACK
mov esp, eax
nop
;
; Call into C code
;
push eax
push edi
push esi
push ebp
call SecCoreStartupWithStack
_ModuleEntryPoint ENDP
END

93
OvmfPkg/Sec/Ia32/Stack.S Normal file
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#------------------------------------------------------------------------------
#
# Copyright (c) 2008, 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:
#
# Stack.asm
#
# Abstract:
#
# Switch the stack from temporary memory to permenent memory.
#
#------------------------------------------------------------------------------
#------------------------------------------------------------------------------
# VOID
# EFIAPI
# SecSwitchStack (
# UINT32 TemporaryMemoryBase,
# UINT32 PermenentMemoryBase
# );
#------------------------------------------------------------------------------
#include <ProcessorBind.h>
ASM_GLOBAL ASM_PFX(SecSwitchStack)
ASM_PFX(SecSwitchStack):
#
# Save three register: eax, ebx, ecx
#
push %eax
push %ebx
push %ecx
push %edx
#
# !!CAUTION!! this function address's is pushed into stack after
# migration of whole temporary memory, so need save it to permenent
# memory at first!
#
movl 20(%esp), %ebx # Save the first parameter
movl 24(%esp), %ecx # Save the second parameter
#
# Save this function's return address into permenent memory at first.
# Then, Fixup the esp point to permenent memory
#
movl %esp, %eax
subl %ebx, %eax
addl %ecx, %eax
movl (%esp), %edx # copy pushed register's value to permenent memory
movl %edx, (%eax)
movl 4(%esp), %edx
movl %edx, 4(%eax)
movl 8(%esp), %edx
movl %edx, 8(%eax)
movl 12(%esp), %edx
movl %edx, 12(%eax)
movl 16(%esp), %edx
movl %edx, 16(%eax)
movl %eax, %esp # From now, esp is pointed to permenent memory
#
# Fixup the ebp point to permenent memory
#
movl %ebp, %eax
subl %ebx, %eax
addl %ecx, %eax
movl %eax, %ebp # From now, ebp is pointed to permenent memory
#
# Fixup callee's ebp point for PeiDispatch
#
movl (%ebp), %eax
subl %ebx, %eax
addl %ecx, %eax
movl %eax, (%ebp) # From now, Temporary's PPI caller's stack is in permenent memory
pop %edx
pop %ecx
pop %ebx
pop %eax
ret

136
OvmfPkg/Sec/Ia32/SwitchStack.c Normal file
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/** @file
Switch Stack functions.
Copyright (c) 2006 - 2007, 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 common header file for this module.
//
#include <Library/BaseLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/DebugLib.h>
#include <Library/PeiServicesLib.h>
/**
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
PeiSwitchStacks (
IN SWITCH_STACK_ENTRY_POINT EntryPoint,
IN VOID *Context1, OPTIONAL
IN VOID *Context2, OPTIONAL
IN VOID *Context3, OPTIONAL
IN VOID *OldTopOfStack,
IN VOID *NewStack
)
{
BASE_LIBRARY_JUMP_BUFFER JumpBuffer;
ASSERT (EntryPoint != NULL);
ASSERT (NewStack != NULL);
//
// Stack should be aligned with CPU_STACK_ALIGNMENT
//
ASSERT (((UINTN)NewStack & (CPU_STACK_ALIGNMENT - 1)) == 0);
JumpBuffer.Eip = (UINTN)EntryPoint;
JumpBuffer.Esp = (UINTN)NewStack - sizeof (VOID*);
JumpBuffer.Esp -= sizeof (Context1) + sizeof (Context2) + sizeof(Context3);
((VOID**)JumpBuffer.Esp)[1] = Context1;
((VOID**)JumpBuffer.Esp)[2] = Context2;
((VOID**)JumpBuffer.Esp)[3] = Context3;
LongJump (&JumpBuffer, (UINTN)-1);
//
// InternalSwitchStack () will never return
//
ASSERT (FALSE);
}
/**
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
SecSwitchStack (
IN UINTN TemporaryMemoryBase,
IN UINTN PermanentMemoryBase,
IN UINTN CopySize
)
{
BASE_LIBRARY_JUMP_BUFFER JumpBuffer;
UINTN SetJumpFlag;
ASSERT ((VOID*)TemporaryMemoryBase != NULL);
ASSERT ((VOID*)PermanentMemoryBase != NULL);
SetJumpFlag = SetJump (&JumpBuffer);
//
// The initial call to SetJump() must always return 0.
// Subsequent calls to LongJump() may cause a non-zero value to be returned by SetJump().
//
if (SetJumpFlag == 0) {
DEBUG ((EFI_D_ERROR, "SecSwitchStack+%d: Esp: 0x%xL\n", __LINE__, JumpBuffer.Esp));
JumpBuffer.Esp =
(INTN)JumpBuffer.Esp -
(INTN)TemporaryMemoryBase +
(INTN)PermanentMemoryBase;
MemoryFence ();
CopyMem((VOID*)PermanentMemoryBase, (VOID*)TemporaryMemoryBase, CopySize);
LongJump (&JumpBuffer, (UINTN)-1);
}
}

171
OvmfPkg/Sec/SecMain.c Normal file
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/** @file
Main SEC phase code. Transitions to PEI.
Copyright (c) 2008 - 2009, 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.
**/
#include <PiPei.h>
#include <Library/BaseLib.h>
#include <Library/DebugLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/PeiServicesLib.h>
#include <Ppi/TemporaryRamSupport.h>
#include <Library/PcdLib.h>
#include "SecMain.h"
EFI_STATUS
EFIAPI
TemporaryRamMigration (
IN CONST EFI_PEI_SERVICES **PeiServices,
IN EFI_PHYSICAL_ADDRESS TemporaryMemoryBase,
IN EFI_PHYSICAL_ADDRESS PermanentMemoryBase,
IN UINTN CopySize
);
STATIC TEMPORARY_RAM_SUPPORT_PPI mTempRamSupportPpi = {
(TEMPORARY_RAM_MIGRATION) TemporaryRamMigration
};
STATIC EFI_PEI_PPI_DESCRIPTOR mPrivateDispatchTable[] = {
{
(EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
&gEfiTemporaryRamSupportPpiGuid,
&mTempRamSupportPpi
},
};
VOID
InitializeIdtPtr (
IN VOID* IdtPtr
)
{
IA32_DESCRIPTOR IdtDescriptor;
IdtDescriptor.Base = (UINTN)IdtPtr;
IdtDescriptor.Limit = (UINT16) 0;
AsmWriteIdtr (&IdtDescriptor);
}
VOID
EFIAPI
SecCoreStartupWithStack (
IN VOID *BootFirmwareVolumePtr,
IN VOID *SecCoreEntryPoint,
IN VOID *PeiCoreEntryPoint,
IN VOID *TopOfCurrentStack
)
{
EFI_SEC_PEI_HAND_OFF *SecCoreData;
UINT8 *BottomOfTempRam;
UINT8 *TopOfTempRam;
UINTN SizeOfTempRam;
VOID *IdtPtr;
DEBUG ((EFI_D_ERROR,
"SecCoreStartupWithStack(0x%x, 0x%x, 0x%x, 0x%x)\n",
(UINT32)(UINTN)BootFirmwareVolumePtr,
(UINT32)(UINTN)SecCoreEntryPoint,
(UINT32)(UINTN)PeiCoreEntryPoint,
(UINT32)(UINTN)TopOfCurrentStack));
BottomOfTempRam = (UINT8*)(UINTN) INITIAL_TOP_OF_STACK;
SizeOfTempRam = (UINTN) SIZE_64KB;
TopOfTempRam = BottomOfTempRam + SizeOfTempRam;
//
// |-------------|
// | SecCoreData | 4k
// |-------------|
// | Heap | 28k
// |-------------|
// | Stack | 32k
// |-------------| <---- INITIAL_TOP_OF_STACK
//
//
// Bind this information into the SEC hand-off state
//
SecCoreData = (EFI_SEC_PEI_HAND_OFF*)((UINTN) TopOfTempRam - SIZE_4KB);
SecCoreData->DataSize = sizeof(EFI_SEC_PEI_HAND_OFF);
SecCoreData->BootFirmwareVolumeBase = (VOID*)(UINTN) PcdGet32 (PcdOvmfFlashFvRecoveryBase);
SecCoreData->BootFirmwareVolumeSize = PcdGet32 (PcdOvmfFlashFvRecoverySize);
SecCoreData->TemporaryRamBase = (VOID*) BottomOfTempRam;
SecCoreData->TemporaryRamSize = SizeOfTempRam;
SecCoreData->PeiTemporaryRamSize = 28 * SIZE_1KB;
SecCoreData->PeiTemporaryRamBase = (VOID*)((UINTN)SecCoreData - SecCoreData->PeiTemporaryRamSize);
SecCoreData->StackBase = SecCoreData->TemporaryRamBase;
SecCoreData->StackSize = (UINTN)SecCoreData->PeiTemporaryRamBase - (UINTN)SecCoreData->TemporaryRamBase;
//
// Initialize the IDT Pointer, since IA32 & X64 architectures
// use it to store the PEI Services pointer.
//
IdtPtr = (VOID*)((UINT8*)SecCoreData + sizeof (*SecCoreData) + sizeof (UINTN));
IdtPtr = ALIGN_POINTER(IdtPtr, 16);
InitializeIdtPtr (IdtPtr);
//
// Transfer control to the PEI Core
//
PeiSwitchStacks (
(SWITCH_STACK_ENTRY_POINT) (UINTN) PeiCoreEntryPoint,
SecCoreData,
(VOID *) (UINTN) ((EFI_PEI_PPI_DESCRIPTOR *) &mPrivateDispatchTable),
NULL,
TopOfCurrentStack,
(VOID *)((UINTN)SecCoreData->StackBase + SecCoreData->StackSize)
);
//
// If we get here, then the PEI Core returned. This is an error
//
ASSERT (FALSE);
CpuDeadLoop ();
}
EFI_STATUS
EFIAPI
TemporaryRamMigration (
IN CONST EFI_PEI_SERVICES **PeiServices,
IN EFI_PHYSICAL_ADDRESS TemporaryMemoryBase,
IN EFI_PHYSICAL_ADDRESS PermanentMemoryBase,
IN UINTN CopySize
)
{
DEBUG ((EFI_D_ERROR, "TemporaryRamMigration(0x%x, 0x%x, 0x%x)\n", (UINTN)TemporaryMemoryBase, (UINTN)PermanentMemoryBase, CopySize));
//
// Migrate the whole temporary memory to permenent memory.
//
CopyMem((VOID*)(UINTN)PermanentMemoryBase, (VOID*)(UINTN)TemporaryMemoryBase, CopySize);
//
// SecSwitchStack function must be invoked after the memory migration
// immediatly, also we need fixup the stack change caused by new call into
// permenent memory.
//
SecSwitchStack (
(UINTN) TemporaryMemoryBase,
(UINTN) PermanentMemoryBase,
CopySize
);
return EFI_SUCCESS;
}

50
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/** @file
Header file for SEC code
Copyright (c) 2008 - 2009, 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.
**/
#ifndef _PLATFORM_SECMAIN_H_
#define _PLATFORM_SECMAIN_H_
VOID
EFIAPI
PeiSwitchStacks (
IN SWITCH_STACK_ENTRY_POINT EntryPoint,
IN VOID *Context1, OPTIONAL
IN VOID *Context2, OPTIONAL
IN VOID *Context3, OPTIONAL
IN VOID *OldTopOfStack,
IN VOID *NewStack
);
VOID
EFIAPI
SecSwitchStack (
IN UINTN TemporaryMemoryBase,
IN UINTN PermanentMemoryBase,
IN UINTN CopySize
);
EFI_STATUS
EFIAPI
TemporaryRamMigration (
IN CONST EFI_PEI_SERVICES **PeiServices,
IN EFI_PHYSICAL_ADDRESS TemporaryMemoryBase,
IN EFI_PHYSICAL_ADDRESS PermanentMemoryBase,
IN UINTN CopySize
);
#define INITIAL_TOP_OF_STACK BASE_128KB
#endif // _PLATFORM_SECMAIN_H_

58
OvmfPkg/Sec/SecMain.inf Normal file
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#/** @file
# SEC Driver
#
# Copyright (c) 2008, 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.
#
#**/
[Defines]
INF_VERSION = 0x00010005
BASE_NAME = SecMain
FILE_GUID = df1ccef6-f301-4a63-9661-fc6030dcc880
MODULE_TYPE = SEC
VERSION_STRING = 1.0
EDK_RELEASE_VERSION = 0x00020000
EFI_SPECIFICATION_VERSION = 0x00020000
ENTRY_POINT = SecMain
#
# The following information is for reference only and not required by the build tools.
#
# VALID_ARCHITECTURES = IA32 X64 IPF EBC
#
[Sources.common]
SecMain.c
[Sources.IA32]
Ia32/SecEntry.asm
Ia32/SecEntry.S
Ia32/SwitchStack.c
[Sources.X64]
X64/SecEntry.asm
X64/SecEntry.S
X64/SwitchStack.c
[Packages]
MdePkg/MdePkg.dec
OvmfPkg/OvmfPkg.dec
[LibraryClasses]
BaseLib
[Ppis]
gEfiTemporaryRamSupportPpiGuid # PPI ALWAYS_PRODUCED
[FixedPcd.common]
gUefiOvmfPkgTokenSpaceGuid.PcdOvmfFlashFvRecoveryBase
gUefiOvmfPkgTokenSpaceGuid.PcdOvmfFlashFvRecoverySize

60
OvmfPkg/Sec/X64/SecEntry.S Normal file
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# TITLE SecEntry.asm
#------------------------------------------------------------------------------
#*
#* Copyright 2006 - 2009, 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.
#*
#* CpuAsm.asm
#*
#* Abstract:
#*
#------------------------------------------------------------------------------
#include "SecMain.h"
#EXTERN ASM_PFX(SecCoreStartupWithStack)
#
# SecCore Entry Point
#
# Processor is in flat protected mode
#
# @param ESI Pointer to SEC Core Entry Point (this function)
# @param EDI Pointer to PEI Core Entry Point
# @param EBP Pointer to the start of the Boot Firmware Volume
#
# @return None
#
#
.intel_syntax
ASM_GLOBAL ASM_PFX(_ModuleEntryPoint)
ASM_PFX(_ModuleEntryPoint):
#
# Load temporary stack top at very low memory. The C code
# can reload to a better address.
#
mov %rsp, INITIAL_TOP_OF_STACK
nop
#
# Setup parameters and call SecCoreStartupWithStack
# rcx: BootFirmwareVolumePtr
# rdx: SecCoreEntryPoint
# r8: PeiCoreEntryPoint
# r9: TopOfCurrentStack
#
mov %rcx, %rbp
mov %rdx, %rsi
mov %r8, %rdi
mov %r9, %rsp
call ASM_PFX(SecCoreStartupWithStack)

61
OvmfPkg/Sec/X64/SecEntry.asm Normal file
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TITLE SecEntry.asm
;------------------------------------------------------------------------------
;*
;* Copyright 2006 - 2009, 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.
;*
;* CpuAsm.asm
;*
;* Abstract:
;*
;------------------------------------------------------------------------------
#include "SecMain.h"
.code
EXTERN SecCoreStartupWithStack:PROC
;
; SecCore Entry Point
;
; Processor is in flat protected mode
;
; @param ESI Pointer to SEC Core Entry Point (this function)
; @param EDI Pointer to PEI Core Entry Point
; @param EBP Pointer to the start of the Boot Firmware Volume
;
; @return None
;
;
_ModuleEntryPoint PROC PUBLIC
;
; Load temporary stack top at very low memory. The C code
; can reload to a better address.
;
mov rsp, INITIAL_TOP_OF_STACK
nop
;
; Setup parameters and call SecCoreStartupWithStack
; rcx: BootFirmwareVolumePtr
; rdx: SecCoreEntryPoint
; r8: PeiCoreEntryPoint
; r9: TopOfCurrentStack
;
mov rcx, rbp
mov rdx, rsi
mov r8, rdi
mov r9, rsp
call SecCoreStartupWithStack
_ModuleEntryPoint ENDP
END

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OvmfPkg/Sec/X64/SwitchStack.c Normal file
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/** @file
Switch Stack functions.
Copyright (c) 2006 - 2007, 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 common header file for this module.
//
#include <Library/BaseLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/DebugLib.h>
#include <Library/PeiServicesLib.h>
//
// Type define for PEI Core Entry Point function
//
typedef
VOID
(EFIAPI *PEI_CORE_ENTRY_POINT)(
IN CONST EFI_SEC_PEI_HAND_OFF *SecCoreData,
IN CONST EFI_PEI_PPI_DESCRIPTOR *PpiList,
IN VOID *Data
)
;
/**
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
PeiSwitchStacks (
IN SWITCH_STACK_ENTRY_POINT EntryPoint,
IN VOID *Context1, OPTIONAL
IN VOID *Context2, OPTIONAL
IN VOID *Context3, OPTIONAL
IN VOID *OldTopOfStack,
IN VOID *NewStack
)
{
BASE_LIBRARY_JUMP_BUFFER JumpBuffer;
UINTN SizeOfStackUsed;
UINTN SetJumpFlag;
ASSERT (EntryPoint != NULL);
ASSERT (NewStack != NULL);
SetJumpFlag = SetJump (&JumpBuffer);
//
// The initial call to SetJump() must always return 0.
// Subsequent calls to LongJump() may cause a non-zero value to be returned by SetJump().
//
if (SetJumpFlag == 0) {
//
// Stack should be aligned with CPU_STACK_ALIGNMENT
//
ASSERT (((UINTN)NewStack & (CPU_STACK_ALIGNMENT - 1)) == 0);
//JumpBuffer.Rip = (UINTN)EntryPoint;
SizeOfStackUsed = (UINTN)OldTopOfStack - JumpBuffer.Rsp;
JumpBuffer.Rsp = (UINTN)NewStack - SizeOfStackUsed;
MemoryFence ();
CopyMem (
(VOID*) ((UINTN)NewStack - SizeOfStackUsed),
(VOID*) ((UINTN)OldTopOfStack - SizeOfStackUsed),
SizeOfStackUsed
);
LongJump (&JumpBuffer, (UINTN)-1);
} else {
(*(PEI_CORE_ENTRY_POINT)(EntryPoint)) (
(EFI_SEC_PEI_HAND_OFF *) Context1,
(EFI_PEI_PPI_DESCRIPTOR *) Context2,
Context3
);
}
//
// InternalSwitchStack () will never return
//
ASSERT (FALSE);
}
/**
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
SecSwitchStack (
IN UINTN TemporaryMemoryBase,
IN UINTN PermanentMemoryBase,
IN UINTN CopySize
)
{
BASE_LIBRARY_JUMP_BUFFER JumpBuffer;
UINTN SetJumpFlag;
ASSERT ((VOID*)TemporaryMemoryBase != NULL);
ASSERT ((VOID*)PermanentMemoryBase != NULL);
SetJumpFlag = SetJump (&JumpBuffer);
//
// The initial call to SetJump() must always return 0.
// Subsequent calls to LongJump() may cause a non-zero value to be returned by SetJump().
//
if (SetJumpFlag == 0) {
DEBUG ((EFI_D_ERROR, "SecSwitchStack+%d: Rsp: 0x%xL\n", __LINE__, JumpBuffer.Rsp));
JumpBuffer.Rsp =
(INTN)JumpBuffer.Rsp -
(INTN)TemporaryMemoryBase +
(INTN)PermanentMemoryBase;
MemoryFence ();
CopyMem((VOID*)PermanentMemoryBase, (VOID*)TemporaryMemoryBase, CopySize);
LongJump (&JumpBuffer, (UINTN)-1);
}
}