There are below 2 differences between AMD & OVMF according
existing implementation:
1.The mode of the CPU check is different between the AMD & OVMF.
OVMF:
CpuSaveState->x86.SMMRevId & 0Xffff
AMD:
LMAValue = (UINT32)AsmReadMsr64 (EFER_ADDRESS) & LMA
2.Existing SmBase configuration is different between the
AMD & OVMF.
OVMF:
if ((CpuSaveState->x86.SMMRevId & 0xFFFF) == 0) {
CpuSaveState->x86.SMBASE = mSmBaseForAllCpus[CpuIndex];
} else {
CpuSaveState->x64.SMBASE = mSmBaseForAllCpus[CpuIndex];
}
AMD:
AmdCpuState->x64.SMBASE = mSmBaseForAllCpus[CpuIndex];
This patch provides the SmmRelocationLib library instance
for OVMF to handle the logic difference, and it won't change
the existing implementation code logic.
Cc: Ray Ni <ray...@intel.com>
Cc: Zeng Star <star.z...@intel.com>
Cc: Ard Biesheuvel <ardb+tianoc...@kernel.org>
Cc: Jiewen Yao <jiewen....@intel.com>
Cc: Gerd Hoffmann <kra...@redhat.com>
Cc: Rahul Kumar <rahul1.ku...@intel.com>
Signed-off-by: Jiaxin Wu <jiaxin...@intel.com>
---
OvmfPkg/AmdSev/AmdSevX64.dsc | 1 +
OvmfPkg/CloudHv/CloudHvX64.dsc | 1 +
.../Library/SmmRelocationLib/Ia32/Semaphore.c | 0
.../Library/SmmRelocationLib/Ia32/SmmInit.nasm | 0
.../SmmRelocationLib/InternalSmmRelocationLib.h | 0
.../Library/SmmRelocationLib/SmmRelocationLib.c | 0
.../Library/SmmRelocationLib/SmmRelocationLib.inf | 3 +-
.../SmmRelocationLib/SmramSaveStateConfig.c | 65 +++++++---------------
.../Library/SmmRelocationLib/X64/Semaphore.c | 0
.../Library/SmmRelocationLib/X64/SmmInit.nasm | 0
OvmfPkg/Microvm/MicrovmX64.dsc | 1 +
OvmfPkg/OvmfPkgIa32.dsc | 1 +
OvmfPkg/OvmfPkgIa32X64.dsc | 1 +
OvmfPkg/OvmfPkgX64.dsc | 1 +
14 files changed, 27 insertions(+), 47 deletions(-)
copy {UefiCpuPkg => OvmfPkg}/Library/SmmRelocationLib/Ia32/Semaphore.c (100%)
copy {UefiCpuPkg => OvmfPkg}/Library/SmmRelocationLib/Ia32/SmmInit.nasm (100%)
copy {UefiCpuPkg =>
OvmfPkg}/Library/SmmRelocationLib/InternalSmmRelocationLib.h (100%)
copy {UefiCpuPkg => OvmfPkg}/Library/SmmRelocationLib/SmmRelocationLib.c (100%)
copy {UefiCpuPkg => OvmfPkg}/Library/SmmRelocationLib/SmmRelocationLib.inf
(90%)
copy UefiCpuPkg/Library/SmmRelocationLib/AmdSmramSaveStateConfig.c =>
OvmfPkg/Library/SmmRelocationLib/SmramSaveStateConfig.c (60%)
copy {UefiCpuPkg => OvmfPkg}/Library/SmmRelocationLib/X64/Semaphore.c (100%)
copy {UefiCpuPkg => OvmfPkg}/Library/SmmRelocationLib/X64/SmmInit.nasm (100%)
diff --git a/OvmfPkg/AmdSev/AmdSevX64.dsc b/OvmfPkg/AmdSev/AmdSevX64.dsc
index a7540bb636..8eb6f4f24f 100644
--- a/OvmfPkg/AmdSev/AmdSevX64.dsc
+++ b/OvmfPkg/AmdSev/AmdSevX64.dsc
@@ -108,10 +108,11 @@
################################################################################
!include MdePkg/MdeLibs.dsc.inc
[LibraryClasses]
+ SmmRelocationLib|OvmfPkg/Library/SmmRelocationLib/SmmRelocationLib.inf
PcdLib|MdePkg/Library/BasePcdLibNull/BasePcdLibNull.inf
TimerLib|OvmfPkg/Library/AcpiTimerLib/BaseAcpiTimerLib.inf
ResetSystemLib|OvmfPkg/Library/ResetSystemLib/BaseResetSystemLib.inf
PrintLib|MdePkg/Library/BasePrintLib/BasePrintLib.inf
BaseMemoryLib|MdePkg/Library/BaseMemoryLibRepStr/BaseMemoryLibRepStr.inf
diff --git a/OvmfPkg/CloudHv/CloudHvX64.dsc b/OvmfPkg/CloudHv/CloudHvX64.dsc
index b1911d6ab4..4996885301 100644
--- a/OvmfPkg/CloudHv/CloudHvX64.dsc
+++ b/OvmfPkg/CloudHv/CloudHvX64.dsc
@@ -124,10 +124,11 @@
################################################################################
!include MdePkg/MdeLibs.dsc.inc
[LibraryClasses]
+ SmmRelocationLib|OvmfPkg/Library/SmmRelocationLib/SmmRelocationLib.inf
PcdLib|MdePkg/Library/BasePcdLibNull/BasePcdLibNull.inf
TimerLib|OvmfPkg/Library/AcpiTimerLib/BaseAcpiTimerLib.inf
ResetSystemLib|OvmfPkg/Library/ResetSystemLib/BaseResetSystemLib.inf
PrintLib|MdePkg/Library/BasePrintLib/BasePrintLib.inf
BaseMemoryLib|MdePkg/Library/BaseMemoryLibRepStr/BaseMemoryLibRepStr.inf
diff --git a/UefiCpuPkg/Library/SmmRelocationLib/Ia32/Semaphore.c
b/OvmfPkg/Library/SmmRelocationLib/Ia32/Semaphore.c
similarity index 100%
copy from UefiCpuPkg/Library/SmmRelocationLib/Ia32/Semaphore.c
copy to OvmfPkg/Library/SmmRelocationLib/Ia32/Semaphore.c
diff --git a/UefiCpuPkg/Library/SmmRelocationLib/Ia32/SmmInit.nasm
b/OvmfPkg/Library/SmmRelocationLib/Ia32/SmmInit.nasm
similarity index 100%
copy from UefiCpuPkg/Library/SmmRelocationLib/Ia32/SmmInit.nasm
copy to OvmfPkg/Library/SmmRelocationLib/Ia32/SmmInit.nasm
diff --git a/UefiCpuPkg/Library/SmmRelocationLib/InternalSmmRelocationLib.h
b/OvmfPkg/Library/SmmRelocationLib/InternalSmmRelocationLib.h
similarity index 100%
copy from UefiCpuPkg/Library/SmmRelocationLib/InternalSmmRelocationLib.h
copy to OvmfPkg/Library/SmmRelocationLib/InternalSmmRelocationLib.h
diff --git a/UefiCpuPkg/Library/SmmRelocationLib/SmmRelocationLib.c
b/OvmfPkg/Library/SmmRelocationLib/SmmRelocationLib.c
similarity index 100%
copy from UefiCpuPkg/Library/SmmRelocationLib/SmmRelocationLib.c
copy to OvmfPkg/Library/SmmRelocationLib/SmmRelocationLib.c
diff --git a/UefiCpuPkg/Library/SmmRelocationLib/SmmRelocationLib.inf
b/OvmfPkg/Library/SmmRelocationLib/SmmRelocationLib.inf
similarity index 90%
copy from UefiCpuPkg/Library/SmmRelocationLib/SmmRelocationLib.inf
copy to OvmfPkg/Library/SmmRelocationLib/SmmRelocationLib.inf
index 45fdaf35bc..3ea6a1a0bc 100644
--- a/UefiCpuPkg/Library/SmmRelocationLib/SmmRelocationLib.inf
+++ b/OvmfPkg/Library/SmmRelocationLib/SmmRelocationLib.inf
@@ -13,11 +13,11 @@
##
[Defines]
INF_VERSION = 0x00010005
BASE_NAME = SmmRelocationLib
- FILE_GUID = 853E97B3-790C-4EA3-945C-8F622FC47FE8
+ FILE_GUID = 51834F51-CCE0-4743-B553-935D0C8A53FF
MODULE_TYPE = PEIM
VERSION_STRING = 1.0
LIBRARY_CLASS = SmmRelocationLib
[Sources]
@@ -40,11 +40,10 @@
[LibraryClasses]
BaseLib
BaseMemoryLib
CpuExceptionHandlerLib
- CpuLib
DebugLib
HobLib
LocalApicLib
MemoryAllocationLib
PcdLib
diff --git a/UefiCpuPkg/Library/SmmRelocationLib/AmdSmramSaveStateConfig.c
b/OvmfPkg/Library/SmmRelocationLib/SmramSaveStateConfig.c
similarity index 60%
copy from UefiCpuPkg/Library/SmmRelocationLib/AmdSmramSaveStateConfig.c
copy to OvmfPkg/Library/SmmRelocationLib/SmramSaveStateConfig.c
index 068ae60887..146e6d54d9 100644
--- a/UefiCpuPkg/Library/SmmRelocationLib/AmdSmramSaveStateConfig.c
+++ b/OvmfPkg/Library/SmmRelocationLib/SmramSaveStateConfig.c
@@ -1,43 +1,15 @@
/** @file
Config SMRAM Save State for SmmBases Relocation.
- Copyright (C) 2023 Advanced Micro Devices, Inc. All rights reserved.<BR>
Copyright (c) 2024, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include "InternalSmmRelocationLib.h"
#include <Register/Amd/SmramSaveStateMap.h>
-#define EFER_ADDRESS 0XC0000080ul
-
-/**
- Get the mode of the CPU at the time an SMI occurs
-
- @retval EFI_MM_SAVE_STATE_REGISTER_LMA_32BIT 32 bit.
- @retval EFI_MM_SAVE_STATE_REGISTER_LMA_64BIT 64 bit.
-
-**/
-UINT8
-GetMmSaveStateRegisterLma (
- VOID
- )
-{
- UINT8 SmmSaveStateRegisterLma;
- UINT32 LMAValue;
-
- SmmSaveStateRegisterLma = (UINT8)EFI_MM_SAVE_STATE_REGISTER_LMA_32BIT;
-
- LMAValue = (UINT32)AsmReadMsr64 (EFER_ADDRESS) & LMA;
- if (LMAValue) {
- SmmSaveStateRegisterLma = (UINT8)EFI_MM_SAVE_STATE_REGISTER_LMA_64BIT;
- }
-
- return SmmSaveStateRegisterLma;
-}
-
/**
This function configures the SmBase on the currently executing CPU.
@param[in] SmBase The SmBase on the currently executing CPU.
@@ -46,15 +18,19 @@ VOID
EFIAPI
ConfigureSmBase (
IN UINT64 SmBase
)
{
- AMD_SMRAM_SAVE_STATE_MAP *AmdCpuState;
+ AMD_SMRAM_SAVE_STATE_MAP *CpuSaveState;
- AmdCpuState = (AMD_SMRAM_SAVE_STATE_MAP *)(UINTN)(SMM_DEFAULT_SMBASE +
SMRAM_SAVE_STATE_MAP_OFFSET);
+ CpuSaveState = (AMD_SMRAM_SAVE_STATE_MAP *)(UINTN)(SMM_DEFAULT_SMBASE +
SMRAM_SAVE_STATE_MAP_OFFSET);
- AmdCpuState->x64.SMBASE = (UINT32)SmBase;
+ if ((CpuSaveState->x86.SMMRevId & 0xFFFF) == 0) {
+ CpuSaveState->x86.SMBASE = (UINT32)SmBase;
+ } else {
+ CpuSaveState->x64.SMBASE = (UINT32)SmBase;
+ }
}
/**
This function updates the SMRAM save state on the currently executing CPU
to resume execution at a specific address after an RSM instruction. This
@@ -88,38 +64,37 @@ HookReturnFromSmm (
IN UINT64 NewInstructionPointer32,
IN UINT64 NewInstructionPointer
)
{
UINT64 OriginalInstructionPointer;
- AMD_SMRAM_SAVE_STATE_MAP *AmdCpuState;
-
- AmdCpuState = (AMD_SMRAM_SAVE_STATE_MAP *)CpuState;
+ AMD_SMRAM_SAVE_STATE_MAP *CpuSaveState;
- if (GetMmSaveStateRegisterLma () == EFI_MM_SAVE_STATE_REGISTER_LMA_32BIT) {
- OriginalInstructionPointer = (UINT64)AmdCpuState->x86._EIP;
- AmdCpuState->x86._EIP = (UINT32)NewInstructionPointer;
+ CpuSaveState = (AMD_SMRAM_SAVE_STATE_MAP *)CpuState;
+ if ((CpuSaveState->x86.SMMRevId & 0xFFFF) == 0) {
+ OriginalInstructionPointer = (UINT64)CpuSaveState->x86._EIP;
+ CpuSaveState->x86._EIP = (UINT32)NewInstructionPointer;
//
// Clear the auto HALT restart flag so the RSM instruction returns
// program control to the instruction following the HLT instruction.
//
- if ((AmdCpuState->x86.AutoHALTRestart & BIT0) != 0) {
- AmdCpuState->x86.AutoHALTRestart &= ~BIT0;
+ if ((CpuSaveState->x86.AutoHALTRestart & BIT0) != 0) {
+ CpuSaveState->x86.AutoHALTRestart &= ~BIT0;
}
} else {
- OriginalInstructionPointer = AmdCpuState->x64._RIP;
- if ((AmdCpuState->x64.EFER & LMA) == 0) {
- AmdCpuState->x64._RIP = (UINT32)NewInstructionPointer32;
+ OriginalInstructionPointer = CpuSaveState->x64._RIP;
+ if ((CpuSaveState->x64.EFER & LMA) == 0) {
+ CpuSaveState->x64._RIP = (UINT32)NewInstructionPointer32;
} else {
- AmdCpuState->x64._RIP = (UINT32)NewInstructionPointer;
+ CpuSaveState->x64._RIP = (UINT32)NewInstructionPointer;
}
//
// Clear the auto HALT restart flag so the RSM instruction returns
// program control to the instruction following the HLT instruction.
//
- if ((AmdCpuState->x64.AutoHALTRestart & BIT0) != 0) {
- AmdCpuState->x64.AutoHALTRestart &= ~BIT0;
+ if ((CpuSaveState->x64.AutoHALTRestart & BIT0) != 0) {
+ CpuSaveState->x64.AutoHALTRestart &= ~BIT0;
}
}
return OriginalInstructionPointer;
}
diff --git a/UefiCpuPkg/Library/SmmRelocationLib/X64/Semaphore.c
b/OvmfPkg/Library/SmmRelocationLib/X64/Semaphore.c
similarity index 100%
copy from UefiCpuPkg/Library/SmmRelocationLib/X64/Semaphore.c
copy to OvmfPkg/Library/SmmRelocationLib/X64/Semaphore.c
diff --git a/UefiCpuPkg/Library/SmmRelocationLib/X64/SmmInit.nasm
b/OvmfPkg/Library/SmmRelocationLib/X64/SmmInit.nasm
similarity index 100%
copy from UefiCpuPkg/Library/SmmRelocationLib/X64/SmmInit.nasm
copy to OvmfPkg/Library/SmmRelocationLib/X64/SmmInit.nasm
diff --git a/OvmfPkg/Microvm/MicrovmX64.dsc b/OvmfPkg/Microvm/MicrovmX64.dsc
index 1f2f8b5bb6..69de4dd3f1 100644
--- a/OvmfPkg/Microvm/MicrovmX64.dsc
+++ b/OvmfPkg/Microvm/MicrovmX64.dsc
@@ -127,10 +127,11 @@
################################################################################
!include MdePkg/MdeLibs.dsc.inc
[LibraryClasses]
+ SmmRelocationLib|OvmfPkg/Library/SmmRelocationLib/SmmRelocationLib.inf
PcdLib|MdePkg/Library/BasePcdLibNull/BasePcdLibNull.inf
TimerLib|MdePkg/Library/SecPeiDxeTimerLibCpu/SecPeiDxeTimerLibCpu.inf
ResetSystemLib|OvmfPkg/Library/ResetSystemLib/BaseResetSystemLibMicrovm.inf
PrintLib|MdePkg/Library/BasePrintLib/BasePrintLib.inf
BaseMemoryLib|MdePkg/Library/BaseMemoryLibRepStr/BaseMemoryLibRepStr.inf
diff --git a/OvmfPkg/OvmfPkgIa32.dsc b/OvmfPkg/OvmfPkgIa32.dsc
index 15fadc2fdc..78a5aefb6d 100644
--- a/OvmfPkg/OvmfPkgIa32.dsc
+++ b/OvmfPkg/OvmfPkgIa32.dsc
@@ -127,10 +127,11 @@
################################################################################
!include MdePkg/MdeLibs.dsc.inc
[LibraryClasses]
+ SmmRelocationLib|OvmfPkg/Library/SmmRelocationLib/SmmRelocationLib.inf
PcdLib|MdePkg/Library/BasePcdLibNull/BasePcdLibNull.inf
TimerLib|OvmfPkg/Library/AcpiTimerLib/BaseAcpiTimerLib.inf
ResetSystemLib|OvmfPkg/Library/ResetSystemLib/BaseResetSystemLib.inf
PrintLib|MdePkg/Library/BasePrintLib/BasePrintLib.inf
BaseMemoryLib|MdePkg/Library/BaseMemoryLibRepStr/BaseMemoryLibRepStr.inf
diff --git a/OvmfPkg/OvmfPkgIa32X64.dsc b/OvmfPkg/OvmfPkgIa32X64.dsc
index 6e55b50a96..8258129baf 100644
--- a/OvmfPkg/OvmfPkgIa32X64.dsc
+++ b/OvmfPkg/OvmfPkgIa32X64.dsc
@@ -132,10 +132,11 @@
################################################################################
!include MdePkg/MdeLibs.dsc.inc
[LibraryClasses]
+ SmmRelocationLib|OvmfPkg/Library/SmmRelocationLib/SmmRelocationLib.inf
PcdLib|MdePkg/Library/BasePcdLibNull/BasePcdLibNull.inf
TimerLib|OvmfPkg/Library/AcpiTimerLib/BaseAcpiTimerLib.inf
ResetSystemLib|OvmfPkg/Library/ResetSystemLib/BaseResetSystemLib.inf
PrintLib|MdePkg/Library/BasePrintLib/BasePrintLib.inf
BaseMemoryLib|MdePkg/Library/BaseMemoryLibRepStr/BaseMemoryLibRepStr.inf
diff --git a/OvmfPkg/OvmfPkgX64.dsc b/OvmfPkg/OvmfPkgX64.dsc
index f2edd3bbc0..240fc18081 100644
--- a/OvmfPkg/OvmfPkgX64.dsc
+++ b/OvmfPkg/OvmfPkgX64.dsc
@@ -145,10 +145,11 @@
################################################################################
!include MdePkg/MdeLibs.dsc.inc
[LibraryClasses]
+ SmmRelocationLib|OvmfPkg/Library/SmmRelocationLib/SmmRelocationLib.inf
PcdLib|MdePkg/Library/BasePcdLibNull/BasePcdLibNull.inf
TimerLib|OvmfPkg/Library/AcpiTimerLib/BaseAcpiTimerLib.inf
ResetSystemLib|OvmfPkg/Library/ResetSystemLib/BaseResetSystemLib.inf
PrintLib|MdePkg/Library/BasePrintLib/BasePrintLib.inf
BaseMemoryLib|MdePkg/Library/BaseMemoryLibRepStr/BaseMemoryLibRepStr.inf
--
2.16.2.windows.1
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