There are many overlong lines; it's hard to work with the library like
this. Rewrap all files to 79 columns.
(
The rewrapping of the "mSmmCpuRegisterRanges" and "mSmmCpuWidthOffset"
arrays was verified by hexdumping the arrays in
SmmCpuFeaturesLibConstructor(), both before and after the patch, and
comparing the dumps.
Contents of "mSmmCpuRegisterRanges", IA32 build:
> mSmmCpuRegisterRanges: {
> mSmmCpuRegisterRanges: 000000 04 00 00 00 0A 00 00 00 07 00 00 00 14 00 00 00
> mSmmCpuRegisterRanges: 000010 2E 00 00 00 1B 00 00 00 33 00 00 00 36 00 00 00
> mSmmCpuRegisterRanges: 000020 04 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> mSmmCpuRegisterRanges: }
Contents of "mSmmCpuRegisterRanges", X64 build:
> mSmmCpuRegisterRanges: {
> mSmmCpuRegisterRanges: 000000 04 00 00 00 0A 00 00 00 07 00 00 00 00 00 00 00
> mSmmCpuRegisterRanges: 000010 14 00 00 00 2E 00 00 00 1B 00 00 00 00 00 00 00
> mSmmCpuRegisterRanges: 000020 33 00 00 00 36 00 00 00 04 00 00 00 00 00 00 00
> mSmmCpuRegisterRanges: 000030 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> mSmmCpuRegisterRanges: }
Contents of "mSmmCpuWidthOffset", both IA32 and X64 builds:
> mSmmCpuWidthOffset: {
> mSmmCpuWidthOffset: 000000 00 00 00 00 00 00 00 00 00 00 00 08 00 00 68 02
> mSmmCpuWidthOffset: 000010 6C 02 00 00 00 08 00 00 88 02 8C 02 00 00 00 08
> mSmmCpuWidthOffset: 000020 00 00 78 02 7C 02 00 00 00 00 00 00 64 02 68 02
> mSmmCpuWidthOffset: 000030 00 00 00 00 00 00 84 02 88 02 00 00 00 00 00 00
> mSmmCpuWidthOffset: 000040 74 02 78 02 00 00 00 00 00 00 00 00 04 00 00 00
> mSmmCpuWidthOffset: 000050 04 04 A8 03 00 02 00 00 00 00 04 04 AC 03 10 02
> mSmmCpuWidthOffset: 000060 00 00 00 00 04 04 B0 03 20 02 00 00 00 00 04 04
> mSmmCpuWidthOffset: 000070 B4 03 30 02 00 00 00 00 04 04 B8 03 40 02 00 00
> mSmmCpuWidthOffset: 000080 00 00 04 04 BC 03 50 02 00 00 00 00 00 04 00 00
> mSmmCpuWidthOffset: 000090 70 02 00 00 00 00 04 04 C4 03 90 02 00 00 00 00
> mSmmCpuWidthOffset: 0000A0 04 08 C8 03 60 03 64 03 00 00 04 08 CC 03 68 03
> mSmmCpuWidthOffset: 0000B0 6C 03 00 00 00 08 00 00 B8 03 BC 03 01 00 00 08
> mSmmCpuWidthOffset: 0000C0 00 00 B0 03 B4 03 01 00 00 08 00 00 A8 03 AC 03
> mSmmCpuWidthOffset: 0000D0 01 00 00 08 00 00 A0 03 A4 03 01 00 00 08 00 00
> mSmmCpuWidthOffset: 0000E0 98 03 9C 03 01 00 00 08 00 00 90 03 94 03 01 00
> mSmmCpuWidthOffset: 0000F0 00 08 00 00 88 03 8C 03 01 00 00 08 00 00 80 03
> mSmmCpuWidthOffset: 000100 84 03 01 00 04 08 D0 03 F8 03 FC 03 01 00 04 08
> mSmmCpuWidthOffset: 000110 DC 03 E0 03 E4 03 01 00 04 08 D4 03 F0 03 F4 03
> mSmmCpuWidthOffset: 000120 01 00 04 08 D8 03 E8 03 EC 03 01 00 04 08 E0 03
> mSmmCpuWidthOffset: 000130 D8 03 DC 03 01 00 04 08 E4 03 D0 03 D4 03 01 00
> mSmmCpuWidthOffset: 000140 04 08 E8 03 C8 03 CC 03 01 00 04 08 EC 03 C0 03
> mSmmCpuWidthOffset: 000150 C4 03 01 00 04 08 F0 03 78 03 7C 03 01 00 04 08
> mSmmCpuWidthOffset: 000160 F4 03 70 03 74 03 01 00 04 08 FC 03 58 03 5C 03
> mSmmCpuWidthOffset: 000170 00 00 04 08 F8 03 50 03 54 03 00 00 00 04 00 00
> mSmmCpuWidthOffset: 000180 48 03 4C 03 00 00
> mSmmCpuWidthOffset: }
)
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Brijesh Singh <brijesh.singh@amd.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
---
OvmfPkg/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.inf | 10 +-
OvmfPkg/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.c | 594 ++++++++++++++++----
2 files changed, 489 insertions(+), 115 deletions(-)
diff --git a/OvmfPkg/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.inf b/OvmfPkg/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.inf
index 31edf3a9c1fd..75b24606b9df 100644
--- a/OvmfPkg/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.inf
+++ b/OvmfPkg/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.inf
@@ -1,31 +1,33 @@
## @file
# The CPU specific programming for PiSmmCpuDxeSmm module.
#
# Copyright (c) 2009 - 2015, 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
+#
+# 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.
+# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR
+# IMPLIED.
#
##
[Defines]
INF_VERSION = 0x00010005
BASE_NAME = SmmCpuFeaturesLib
MODULE_UNI_FILE = SmmCpuFeaturesLib.uni
FILE_GUID = AC9991BE-D77A-464C-A8DE-A873DB8A4836
MODULE_TYPE = DXE_SMM_DRIVER
VERSION_STRING = 1.0
LIBRARY_CLASS = SmmCpuFeaturesLib
CONSTRUCTOR = SmmCpuFeaturesLibConstructor
[Sources]
SmmCpuFeaturesLib.c
[Packages]
MdePkg/MdePkg.dec
OvmfPkg/OvmfPkg.dec
UefiCpuPkg/UefiCpuPkg.dec
diff --git a/OvmfPkg/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.c b/OvmfPkg/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.c
index a307f64c9c61..a876a6e34751 100644
--- a/OvmfPkg/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.c
+++ b/OvmfPkg/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.c
@@ -1,32 +1,32 @@
/** @file
-The CPU specific programming for PiSmmCpuDxeSmm module.
+ The CPU specific programming for PiSmmCpuDxeSmm module.
-Copyright (c) 2010 - 2015, 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
+ Copyright (c) 2010 - 2015, Intel Corporation. All rights reserved.<BR>
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+ 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 <PiSmm.h>
#include <Library/SmmCpuFeaturesLib.h>
#include <Library/BaseLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/PcdLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/SmmServicesTableLib.h>
#include <Library/DebugLib.h>
#include <Register/QemuSmramSaveStateMap.h>
//
// EFER register LMA bit
//
#define LMA BIT10
/**
The constructor function
@@ -70,95 +70,99 @@ SmmCpuFeaturesLibConstructor (
@param[in] ProcessorInfo Pointer to an array of EFI_PROCESSOR_INFORMATION
structures. ProcessorInfo[CpuIndex] contains the
information for the currently executing CPU.
@param[in] CpuHotPlugData Pointer to the CPU_HOT_PLUG_DATA structure that
contains the ApidId and SmBase arrays.
**/
VOID
EFIAPI
SmmCpuFeaturesInitializeProcessor (
IN UINTN CpuIndex,
IN BOOLEAN IsMonarch,
IN EFI_PROCESSOR_INFORMATION *ProcessorInfo,
IN CPU_HOT_PLUG_DATA *CpuHotPlugData
)
{
QEMU_SMRAM_SAVE_STATE_MAP *CpuState;
//
// Configure SMBASE.
//
- CpuState = (QEMU_SMRAM_SAVE_STATE_MAP *)(UINTN)(SMM_DEFAULT_SMBASE + SMRAM_SAVE_STATE_MAP_OFFSET);
+ CpuState = (QEMU_SMRAM_SAVE_STATE_MAP *)(UINTN)(
+ SMM_DEFAULT_SMBASE +
+ SMRAM_SAVE_STATE_MAP_OFFSET
+ );
if ((CpuState->x86.SMMRevId & 0xFFFF) == 0) {
CpuState->x86.SMBASE = (UINT32)CpuHotPlugData->SmBase[CpuIndex];
} else {
CpuState->x64.SMBASE = (UINT32)CpuHotPlugData->SmBase[CpuIndex];
}
//
// No need to program SMRRs on our virtual platform.
//
}
/**
This function updates the SMRAM save state on the currently executing CPU
to resume execution at a specific address after an RSM instruction. This
function must evaluate the SMRAM save state to determine the execution mode
the RSM instruction resumes and update the resume execution address with
either NewInstructionPointer32 or NewInstructionPoint. The auto HALT restart
flag in the SMRAM save state must always be cleared. This function returns
the value of the instruction pointer from the SMRAM save state that was
replaced. If this function returns 0, then the SMRAM save state was not
modified.
This function is called during the very first SMI on each CPU after
SmmCpuFeaturesInitializeProcessor() to set a flag in normal execution mode
to signal that the SMBASE of each CPU has been updated before the default
SMBASE address is used for the first SMI to the next CPU.
@param[in] CpuIndex The index of the CPU to hook. The value
must be between 0 and the NumberOfCpus
- field in the System Management System Table
- (SMST).
+ field in the System Management System
+ Table (SMST).
@param[in] CpuState Pointer to SMRAM Save State Map for the
currently executing CPU.
@param[in] NewInstructionPointer32 Instruction pointer to use if resuming to
32-bit execution mode from 64-bit SMM.
@param[in] NewInstructionPointer Instruction pointer to use if resuming to
same execution mode as SMM.
@retval 0 This function did modify the SMRAM save state.
@retval > 0 The original instruction pointer value from the SMRAM save state
before it was replaced.
**/
UINT64
EFIAPI
SmmCpuFeaturesHookReturnFromSmm (
IN UINTN CpuIndex,
IN SMRAM_SAVE_STATE_MAP *CpuState,
IN UINT64 NewInstructionPointer32,
IN UINT64 NewInstructionPointer
)
{
UINT64 OriginalInstructionPointer;
- QEMU_SMRAM_SAVE_STATE_MAP *CpuSaveState = (QEMU_SMRAM_SAVE_STATE_MAP *)CpuState;
+ QEMU_SMRAM_SAVE_STATE_MAP *CpuSaveState;
+ CpuSaveState = (QEMU_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 ((CpuSaveState->x86.AutoHALTRestart & BIT0) != 0) {
CpuSaveState->x86.AutoHALTRestart &= ~BIT0;
}
} else {
OriginalInstructionPointer = CpuSaveState->x64._RIP;
if ((CpuSaveState->x64.IA32_EFER & LMA) == 0) {
CpuSaveState->x64._RIP = (UINT32)NewInstructionPointer32;
} else {
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.
@@ -174,58 +178,59 @@ SmmCpuFeaturesHookReturnFromSmm (
Hook point in normal execution mode that allows the one CPU that was elected
as monarch during System Management Mode initialization to perform additional
initialization actions immediately after all of the CPUs have processed their
first SMI and called SmmCpuFeaturesInitializeProcessor() relocating SMBASE
into a buffer in SMRAM and called SmmCpuFeaturesHookReturnFromSmm().
**/
VOID
EFIAPI
SmmCpuFeaturesSmmRelocationComplete (
VOID
)
{
}
/**
Return the size, in bytes, of a custom SMI Handler in bytes. If 0 is
returned, then a custom SMI handler is not provided by this library,
and the default SMI handler must be used.
@retval 0 Use the default SMI handler.
- @retval > 0 Use the SMI handler installed by SmmCpuFeaturesInstallSmiHandler()
- The caller is required to allocate enough SMRAM for each CPU to
- support the size of the custom SMI handler.
+ @retval > 0 Use the SMI handler installed by
+ SmmCpuFeaturesInstallSmiHandler(). The caller is required to
+ allocate enough SMRAM for each CPU to support the size of the
+ custom SMI handler.
**/
UINTN
EFIAPI
SmmCpuFeaturesGetSmiHandlerSize (
VOID
)
{
return 0;
}
/**
- Install a custom SMI handler for the CPU specified by CpuIndex. This function
- is only called if SmmCpuFeaturesGetSmiHandlerSize() returns a size is greater
- than zero and is called by the CPU that was elected as monarch during System
- Management Mode initialization.
+ Install a custom SMI handler for the CPU specified by CpuIndex. This
+ function is only called if SmmCpuFeaturesGetSmiHandlerSize() returns a size
+ is greater than zero and is called by the CPU that was elected as monarch
+ during System Management Mode initialization.
@param[in] CpuIndex The index of the CPU to install the custom SMI handler.
The value must be between 0 and the NumberOfCpus field
in the System Management System Table (SMST).
@param[in] SmBase The SMBASE address for the CPU specified by CpuIndex.
@param[in] SmiStack The stack to use when an SMI is processed by the
the CPU specified by CpuIndex.
@param[in] StackSize The size, in bytes, if the stack used when an SMI is
processed by the CPU specified by CpuIndex.
@param[in] GdtBase The base address of the GDT to use when an SMI is
processed by the CPU specified by CpuIndex.
@param[in] GdtSize The size, in bytes, of the GDT used when an SMI is
processed by the CPU specified by CpuIndex.
@param[in] IdtBase The base address of the IDT to use when an SMI is
processed by the CPU specified by CpuIndex.
@param[in] IdtSize The size, in bytes, of the IDT used when an SMI is
processed by the CPU specified by CpuIndex.
@param[in] Cr3 The base address of the page tables to use when an SMI
is processed by the CPU specified by CpuIndex.
**/
@@ -246,93 +251,93 @@ SmmCpuFeaturesInstallSmiHandler (
}
/**
Determines if MTRR registers must be configured to set SMRAM cache-ability
when executing in System Management Mode.
@retval TRUE MTRR registers must be configured to set SMRAM cache-ability.
@retval FALSE MTRR registers do not need to be configured to set SMRAM
cache-ability.
**/
BOOLEAN
EFIAPI
SmmCpuFeaturesNeedConfigureMtrrs (
VOID
)
{
return FALSE;
}
/**
- Disable SMRR register if SMRR is supported and SmmCpuFeaturesNeedConfigureMtrrs()
- returns TRUE.
+ Disable SMRR register if SMRR is supported and
+ SmmCpuFeaturesNeedConfigureMtrrs() returns TRUE.
**/
VOID
EFIAPI
SmmCpuFeaturesDisableSmrr (
VOID
)
{
//
// No SMRR support, nothing to do
//
}
/**
- Enable SMRR register if SMRR is supported and SmmCpuFeaturesNeedConfigureMtrrs()
- returns TRUE.
+ Enable SMRR register if SMRR is supported and
+ SmmCpuFeaturesNeedConfigureMtrrs() returns TRUE.
**/
VOID
EFIAPI
SmmCpuFeaturesReenableSmrr (
VOID
)
{
//
// No SMRR support, nothing to do
//
}
/**
Processor specific hook point each time a CPU enters System Management Mode.
@param[in] CpuIndex The index of the CPU that has entered SMM. The value
must be between 0 and the NumberOfCpus field in the
System Management System Table (SMST).
**/
VOID
EFIAPI
SmmCpuFeaturesRendezvousEntry (
IN UINTN CpuIndex
)
{
//
// No SMRR support, nothing to do
//
}
/**
Processor specific hook point each time a CPU exits System Management Mode.
- @param[in] CpuIndex The index of the CPU that is exiting SMM. The value must
- be between 0 and the NumberOfCpus field in the System
- Management System Table (SMST).
+ @param[in] CpuIndex The index of the CPU that is exiting SMM. The value
+ must be between 0 and the NumberOfCpus field in the
+ System Management System Table (SMST).
**/
VOID
EFIAPI
SmmCpuFeaturesRendezvousExit (
IN UINTN CpuIndex
)
{
}
/**
Check to see if an SMM register is supported by a specified CPU.
@param[in] CpuIndex The index of the CPU to check for SMM register support.
The value must be between 0 and the NumberOfCpus field
in the System Management System Table (SMST).
@param[in] RegName Identifies the SMM register to check for support.
@retval TRUE The SMM register specified by RegName is supported by the CPU
specified by CpuIndex.
@retval FALSE The SMM register specified by RegName is not supported by the
@@ -382,263 +387,606 @@ SmmCpuFeaturesGetSmmRegister (
@param[in] CpuIndex The index of the CPU to write the SMM register. The
value must be between 0 and the NumberOfCpus field in
the System Management System Table (SMST).
@param[in] RegName Identifies the SMM register to write.
registers are read-only.
@param[in] Value The value to write to the SMM register.
**/
VOID
EFIAPI
SmmCpuFeaturesSetSmmRegister (
IN UINTN CpuIndex,
IN SMM_REG_NAME RegName,
IN UINT64 Value
)
{
ASSERT (FALSE);
}
///
-/// Macro used to simplify the lookup table entries of type CPU_SMM_SAVE_STATE_LOOKUP_ENTRY
+/// Macro used to simplify the lookup table entries of type
+/// CPU_SMM_SAVE_STATE_LOOKUP_ENTRY
///
#define SMM_CPU_OFFSET(Field) OFFSET_OF (QEMU_SMRAM_SAVE_STATE_MAP, Field)
///
-/// Macro used to simplify the lookup table entries of type CPU_SMM_SAVE_STATE_REGISTER_RANGE
+/// Macro used to simplify the lookup table entries of type
+/// CPU_SMM_SAVE_STATE_REGISTER_RANGE
///
#define SMM_REGISTER_RANGE(Start, End) { Start, End, End - Start + 1 }
///
/// Structure used to describe a range of registers
///
typedef struct {
EFI_SMM_SAVE_STATE_REGISTER Start;
EFI_SMM_SAVE_STATE_REGISTER End;
UINTN Length;
} CPU_SMM_SAVE_STATE_REGISTER_RANGE;
///
/// Structure used to build a lookup table to retrieve the widths and offsets
/// associated with each supported EFI_SMM_SAVE_STATE_REGISTER value
///
#define SMM_SAVE_STATE_REGISTER_FIRST_INDEX 1
typedef struct {
UINT8 Width32;
UINT8 Width64;
UINT16 Offset32;
UINT16 Offset64Lo;
UINT16 Offset64Hi;
BOOLEAN Writeable;
} CPU_SMM_SAVE_STATE_LOOKUP_ENTRY;
///
-/// Table used by GetRegisterIndex() to convert an EFI_SMM_SAVE_STATE_REGISTER
+/// Table used by GetRegisterIndex() to convert an EFI_SMM_SAVE_STATE_REGISTER
/// value to an index into a table of type CPU_SMM_SAVE_STATE_LOOKUP_ENTRY
///
static CONST CPU_SMM_SAVE_STATE_REGISTER_RANGE mSmmCpuRegisterRanges[] = {
- SMM_REGISTER_RANGE (EFI_SMM_SAVE_STATE_REGISTER_GDTBASE, EFI_SMM_SAVE_STATE_REGISTER_LDTINFO),
- SMM_REGISTER_RANGE (EFI_SMM_SAVE_STATE_REGISTER_ES, EFI_SMM_SAVE_STATE_REGISTER_RIP),
- SMM_REGISTER_RANGE (EFI_SMM_SAVE_STATE_REGISTER_RFLAGS, EFI_SMM_SAVE_STATE_REGISTER_CR4),
+ SMM_REGISTER_RANGE (
+ EFI_SMM_SAVE_STATE_REGISTER_GDTBASE,
+ EFI_SMM_SAVE_STATE_REGISTER_LDTINFO
+ ),
+ SMM_REGISTER_RANGE (
+ EFI_SMM_SAVE_STATE_REGISTER_ES,
+ EFI_SMM_SAVE_STATE_REGISTER_RIP
+ ),
+ SMM_REGISTER_RANGE (
+ EFI_SMM_SAVE_STATE_REGISTER_RFLAGS,
+ EFI_SMM_SAVE_STATE_REGISTER_CR4
+ ),
{ (EFI_SMM_SAVE_STATE_REGISTER)0, (EFI_SMM_SAVE_STATE_REGISTER)0, 0 }
};
///
-/// Lookup table used to retrieve the widths and offsets associated with each
-/// supported EFI_SMM_SAVE_STATE_REGISTER value
+/// Lookup table used to retrieve the widths and offsets associated with each
+/// supported EFI_SMM_SAVE_STATE_REGISTER value
///
static CONST CPU_SMM_SAVE_STATE_LOOKUP_ENTRY mSmmCpuWidthOffset[] = {
- {0, 0, 0, 0, 0, FALSE}, // Reserved
+ {
+ 0, // Width32
+ 0, // Width64
+ 0, // Offset32
+ 0, // Offset64Lo
+ 0, // Offset64Hi
+ FALSE // Writeable
+ }, // Reserved
//
// CPU Save State registers defined in PI SMM CPU Protocol.
//
- {0, 8, 0 , SMM_CPU_OFFSET (x64._GDTRBase) , SMM_CPU_OFFSET (x64._GDTRBase) + 4, FALSE}, // EFI_SMM_SAVE_STATE_REGISTER_GDTBASE = 4
- {0, 8, 0 , SMM_CPU_OFFSET (x64._IDTRBase) , SMM_CPU_OFFSET (x64._IDTRBase) + 4, FALSE}, // EFI_SMM_SAVE_STATE_REGISTER_IDTBASE = 5
- {0, 8, 0 , SMM_CPU_OFFSET (x64._LDTRBase) , SMM_CPU_OFFSET (x64._LDTRBase) + 4, FALSE}, // EFI_SMM_SAVE_STATE_REGISTER_LDTBASE = 6
- {0, 0, 0 , SMM_CPU_OFFSET (x64._GDTRLimit), SMM_CPU_OFFSET (x64._GDTRLimit) + 4, FALSE}, // EFI_SMM_SAVE_STATE_REGISTER_GDTLIMIT = 7
- {0, 0, 0 , SMM_CPU_OFFSET (x64._IDTRLimit), SMM_CPU_OFFSET (x64._IDTRLimit) + 4, FALSE}, // EFI_SMM_SAVE_STATE_REGISTER_IDTLIMIT = 8
- {0, 0, 0 , SMM_CPU_OFFSET (x64._LDTRLimit), SMM_CPU_OFFSET (x64._LDTRLimit) + 4, FALSE}, // EFI_SMM_SAVE_STATE_REGISTER_LDTLIMIT = 9
- {0, 0, 0 , 0 , 0 + 4, FALSE}, // EFI_SMM_SAVE_STATE_REGISTER_LDTINFO = 10
-
- {4, 4, SMM_CPU_OFFSET (x86._ES) , SMM_CPU_OFFSET (x64._ES) , 0 , FALSE}, // EFI_SMM_SAVE_STATE_REGISTER_ES = 20
- {4, 4, SMM_CPU_OFFSET (x86._CS) , SMM_CPU_OFFSET (x64._CS) , 0 , FALSE}, // EFI_SMM_SAVE_STATE_REGISTER_CS = 21
- {4, 4, SMM_CPU_OFFSET (x86._SS) , SMM_CPU_OFFSET (x64._SS) , 0 , FALSE}, // EFI_SMM_SAVE_STATE_REGISTER_SS = 22
- {4, 4, SMM_CPU_OFFSET (x86._DS) , SMM_CPU_OFFSET (x64._DS) , 0 , FALSE}, // EFI_SMM_SAVE_STATE_REGISTER_DS = 23
- {4, 4, SMM_CPU_OFFSET (x86._FS) , SMM_CPU_OFFSET (x64._FS) , 0 , FALSE}, // EFI_SMM_SAVE_STATE_REGISTER_FS = 24
- {4, 4, SMM_CPU_OFFSET (x86._GS) , SMM_CPU_OFFSET (x64._GS) , 0 , FALSE}, // EFI_SMM_SAVE_STATE_REGISTER_GS = 25
- {0, 4, 0 , SMM_CPU_OFFSET (x64._LDTR) , 0 , FALSE}, // EFI_SMM_SAVE_STATE_REGISTER_LDTR_SEL = 26
- {4, 4, SMM_CPU_OFFSET (x86._TR) , SMM_CPU_OFFSET (x64._TR) , 0 , FALSE}, // EFI_SMM_SAVE_STATE_REGISTER_TR_SEL = 27
- {4, 8, SMM_CPU_OFFSET (x86._DR7) , SMM_CPU_OFFSET (x64._DR7) , SMM_CPU_OFFSET (x64._DR7) + 4, FALSE}, // EFI_SMM_SAVE_STATE_REGISTER_DR7 = 28
- {4, 8, SMM_CPU_OFFSET (x86._DR6) , SMM_CPU_OFFSET (x64._DR6) , SMM_CPU_OFFSET (x64._DR6) + 4, FALSE}, // EFI_SMM_SAVE_STATE_REGISTER_DR6 = 29
- {0, 8, 0 , SMM_CPU_OFFSET (x64._R8) , SMM_CPU_OFFSET (x64._R8) + 4, TRUE }, // EFI_SMM_SAVE_STATE_REGISTER_R8 = 30
- {0, 8, 0 , SMM_CPU_OFFSET (x64._R9) , SMM_CPU_OFFSET (x64._R9) + 4, TRUE }, // EFI_SMM_SAVE_STATE_REGISTER_R9 = 31
- {0, 8, 0 , SMM_CPU_OFFSET (x64._R10) , SMM_CPU_OFFSET (x64._R10) + 4, TRUE }, // EFI_SMM_SAVE_STATE_REGISTER_R10 = 32
- {0, 8, 0 , SMM_CPU_OFFSET (x64._R11) , SMM_CPU_OFFSET (x64._R11) + 4, TRUE }, // EFI_SMM_SAVE_STATE_REGISTER_R11 = 33
- {0, 8, 0 , SMM_CPU_OFFSET (x64._R12) , SMM_CPU_OFFSET (x64._R12) + 4, TRUE }, // EFI_SMM_SAVE_STATE_REGISTER_R12 = 34
- {0, 8, 0 , SMM_CPU_OFFSET (x64._R13) , SMM_CPU_OFFSET (x64._R13) + 4, TRUE }, // EFI_SMM_SAVE_STATE_REGISTER_R13 = 35
- {0, 8, 0 , SMM_CPU_OFFSET (x64._R14) , SMM_CPU_OFFSET (x64._R14) + 4, TRUE }, // EFI_SMM_SAVE_STATE_REGISTER_R14 = 36
- {0, 8, 0 , SMM_CPU_OFFSET (x64._R15) , SMM_CPU_OFFSET (x64._R15) + 4, TRUE }, // EFI_SMM_SAVE_STATE_REGISTER_R15 = 37
- {4, 8, SMM_CPU_OFFSET (x86._EAX) , SMM_CPU_OFFSET (x64._RAX) , SMM_CPU_OFFSET (x64._RAX) + 4, TRUE }, // EFI_SMM_SAVE_STATE_REGISTER_RAX = 38
- {4, 8, SMM_CPU_OFFSET (x86._EBX) , SMM_CPU_OFFSET (x64._RBX) , SMM_CPU_OFFSET (x64._RBX) + 4, TRUE }, // EFI_SMM_SAVE_STATE_REGISTER_RBX = 39
- {4, 8, SMM_CPU_OFFSET (x86._ECX) , SMM_CPU_OFFSET (x64._RCX) , SMM_CPU_OFFSET (x64._RCX) + 4, TRUE }, // EFI_SMM_SAVE_STATE_REGISTER_RCX = 40
- {4, 8, SMM_CPU_OFFSET (x86._EDX) , SMM_CPU_OFFSET (x64._RDX) , SMM_CPU_OFFSET (x64._RDX) + 4, TRUE }, // EFI_SMM_SAVE_STATE_REGISTER_RDX = 41
- {4, 8, SMM_CPU_OFFSET (x86._ESP) , SMM_CPU_OFFSET (x64._RSP) , SMM_CPU_OFFSET (x64._RSP) + 4, TRUE }, // EFI_SMM_SAVE_STATE_REGISTER_RSP = 42
- {4, 8, SMM_CPU_OFFSET (x86._EBP) , SMM_CPU_OFFSET (x64._RBP) , SMM_CPU_OFFSET (x64._RBP) + 4, TRUE }, // EFI_SMM_SAVE_STATE_REGISTER_RBP = 43
- {4, 8, SMM_CPU_OFFSET (x86._ESI) , SMM_CPU_OFFSET (x64._RSI) , SMM_CPU_OFFSET (x64._RSI) + 4, TRUE }, // EFI_SMM_SAVE_STATE_REGISTER_RSI = 44
- {4, 8, SMM_CPU_OFFSET (x86._EDI) , SMM_CPU_OFFSET (x64._RDI) , SMM_CPU_OFFSET (x64._RDI) + 4, TRUE }, // EFI_SMM_SAVE_STATE_REGISTER_RDI = 45
- {4, 8, SMM_CPU_OFFSET (x86._EIP) , SMM_CPU_OFFSET (x64._RIP) , SMM_CPU_OFFSET (x64._RIP) + 4, TRUE }, // EFI_SMM_SAVE_STATE_REGISTER_RIP = 46
-
- {4, 8, SMM_CPU_OFFSET (x86._EFLAGS) , SMM_CPU_OFFSET (x64._RFLAGS) , SMM_CPU_OFFSET (x64._RFLAGS) + 4, TRUE }, // EFI_SMM_SAVE_STATE_REGISTER_RFLAGS = 51
- {4, 8, SMM_CPU_OFFSET (x86._CR0) , SMM_CPU_OFFSET (x64._CR0) , SMM_CPU_OFFSET (x64._CR0) + 4, FALSE}, // EFI_SMM_SAVE_STATE_REGISTER_CR0 = 52
- {4, 8, SMM_CPU_OFFSET (x86._CR3) , SMM_CPU_OFFSET (x64._CR3) , SMM_CPU_OFFSET (x64._CR3) + 4, FALSE}, // EFI_SMM_SAVE_STATE_REGISTER_CR3 = 53
- {0, 4, 0 , SMM_CPU_OFFSET (x64._CR4) , SMM_CPU_OFFSET (x64._CR4) + 4, FALSE}, // EFI_SMM_SAVE_STATE_REGISTER_CR4 = 54
+ {
+ 0, // Width32
+ 8, // Width64
+ 0, // Offset32
+ SMM_CPU_OFFSET (x64._GDTRBase), // Offset64Lo
+ SMM_CPU_OFFSET (x64._GDTRBase) + 4, // Offset64Hi
+ FALSE // Writeable
+ }, // EFI_SMM_SAVE_STATE_REGISTER_GDTBASE = 4
+
+ {
+ 0, // Width32
+ 8, // Width64
+ 0, // Offset32
+ SMM_CPU_OFFSET (x64._IDTRBase), // Offset64Lo
+ SMM_CPU_OFFSET (x64._IDTRBase) + 4, // Offset64Hi
+ FALSE // Writeable
+ }, // EFI_SMM_SAVE_STATE_REGISTER_IDTBASE = 5
+
+ {
+ 0, // Width32
+ 8, // Width64
+ 0, // Offset32
+ SMM_CPU_OFFSET (x64._LDTRBase), // Offset64Lo
+ SMM_CPU_OFFSET (x64._LDTRBase) + 4, // Offset64Hi
+ FALSE // Writeable
+ }, // EFI_SMM_SAVE_STATE_REGISTER_LDTBASE = 6
+
+ {
+ 0, // Width32
+ 0, // Width64
+ 0, // Offset32
+ SMM_CPU_OFFSET (x64._GDTRLimit), // Offset64Lo
+ SMM_CPU_OFFSET (x64._GDTRLimit) + 4, // Offset64Hi
+ FALSE // Writeable
+ }, // EFI_SMM_SAVE_STATE_REGISTER_GDTLIMIT = 7
+
+ {
+ 0, // Width32
+ 0, // Width64
+ 0, // Offset32
+ SMM_CPU_OFFSET (x64._IDTRLimit), // Offset64Lo
+ SMM_CPU_OFFSET (x64._IDTRLimit) + 4, // Offset64Hi
+ FALSE // Writeable
+ }, // EFI_SMM_SAVE_STATE_REGISTER_IDTLIMIT = 8
+
+ {
+ 0, // Width32
+ 0, // Width64
+ 0, // Offset32
+ SMM_CPU_OFFSET (x64._LDTRLimit), // Offset64Lo
+ SMM_CPU_OFFSET (x64._LDTRLimit) + 4, // Offset64Hi
+ FALSE // Writeable
+ }, // EFI_SMM_SAVE_STATE_REGISTER_LDTLIMIT = 9
+
+ {
+ 0, // Width32
+ 0, // Width64
+ 0, // Offset32
+ 0, // Offset64Lo
+ 0 + 4, // Offset64Hi
+ FALSE // Writeable
+ }, // EFI_SMM_SAVE_STATE_REGISTER_LDTINFO = 10
+
+ {
+ 4, // Width32
+ 4, // Width64
+ SMM_CPU_OFFSET (x86._ES), // Offset32
+ SMM_CPU_OFFSET (x64._ES), // Offset64Lo
+ 0, // Offset64Hi
+ FALSE // Writeable
+ }, // EFI_SMM_SAVE_STATE_REGISTER_ES = 20
+
+ {
+ 4, // Width32
+ 4, // Width64
+ SMM_CPU_OFFSET (x86._CS), // Offset32
+ SMM_CPU_OFFSET (x64._CS), // Offset64Lo
+ 0, // Offset64Hi
+ FALSE // Writeable
+ }, // EFI_SMM_SAVE_STATE_REGISTER_CS = 21
+
+ {
+ 4, // Width32
+ 4, // Width64
+ SMM_CPU_OFFSET (x86._SS), // Offset32
+ SMM_CPU_OFFSET (x64._SS), // Offset64Lo
+ 0, // Offset64Hi
+ FALSE // Writeable
+ }, // EFI_SMM_SAVE_STATE_REGISTER_SS = 22
+
+ {
+ 4, // Width32
+ 4, // Width64
+ SMM_CPU_OFFSET (x86._DS), // Offset32
+ SMM_CPU_OFFSET (x64._DS), // Offset64Lo
+ 0, // Offset64Hi
+ FALSE // Writeable
+ }, // EFI_SMM_SAVE_STATE_REGISTER_DS = 23
+
+ {
+ 4, // Width32
+ 4, // Width64
+ SMM_CPU_OFFSET (x86._FS), // Offset32
+ SMM_CPU_OFFSET (x64._FS), // Offset64Lo
+ 0, // Offset64Hi
+ FALSE // Writeable
+ }, // EFI_SMM_SAVE_STATE_REGISTER_FS = 24
+
+ {
+ 4, // Width32
+ 4, // Width64
+ SMM_CPU_OFFSET (x86._GS), // Offset32
+ SMM_CPU_OFFSET (x64._GS), // Offset64Lo
+ 0, // Offset64Hi
+ FALSE // Writeable
+ }, // EFI_SMM_SAVE_STATE_REGISTER_GS = 25
+
+ {
+ 0, // Width32
+ 4, // Width64
+ 0, // Offset32
+ SMM_CPU_OFFSET (x64._LDTR), // Offset64Lo
+ 0, // Offset64Hi
+ FALSE // Writeable
+ }, // EFI_SMM_SAVE_STATE_REGISTER_LDTR_SEL = 26
+
+ {
+ 4, // Width32
+ 4, // Width64
+ SMM_CPU_OFFSET (x86._TR), // Offset32
+ SMM_CPU_OFFSET (x64._TR), // Offset64Lo
+ 0, // Offset64Hi
+ FALSE // Writeable
+ }, // EFI_SMM_SAVE_STATE_REGISTER_TR_SEL = 27
+
+ {
+ 4, // Width32
+ 8, // Width64
+ SMM_CPU_OFFSET (x86._DR7), // Offset32
+ SMM_CPU_OFFSET (x64._DR7), // Offset64Lo
+ SMM_CPU_OFFSET (x64._DR7) + 4, // Offset64Hi
+ FALSE // Writeable
+ }, // EFI_SMM_SAVE_STATE_REGISTER_DR7 = 28
+
+ {
+ 4, // Width32
+ 8, // Width64
+ SMM_CPU_OFFSET (x86._DR6), // Offset32
+ SMM_CPU_OFFSET (x64._DR6), // Offset64Lo
+ SMM_CPU_OFFSET (x64._DR6) + 4, // Offset64Hi
+ FALSE // Writeable
+ }, // EFI_SMM_SAVE_STATE_REGISTER_DR6 = 29
+
+ {
+ 0, // Width32
+ 8, // Width64
+ 0, // Offset32
+ SMM_CPU_OFFSET (x64._R8), // Offset64Lo
+ SMM_CPU_OFFSET (x64._R8) + 4, // Offset64Hi
+ TRUE // Writeable
+ }, // EFI_SMM_SAVE_STATE_REGISTER_R8 = 30
+
+ {
+ 0, // Width32
+ 8, // Width64
+ 0, // Offset32
+ SMM_CPU_OFFSET (x64._R9), // Offset64Lo
+ SMM_CPU_OFFSET (x64._R9) + 4, // Offset64Hi
+ TRUE // Writeable
+ }, // EFI_SMM_SAVE_STATE_REGISTER_R9 = 31
+
+ {
+ 0, // Width32
+ 8, // Width64
+ 0, // Offset32
+ SMM_CPU_OFFSET (x64._R10), // Offset64Lo
+ SMM_CPU_OFFSET (x64._R10) + 4, // Offset64Hi
+ TRUE // Writeable
+ }, // EFI_SMM_SAVE_STATE_REGISTER_R10 = 32
+
+ {
+ 0, // Width32
+ 8, // Width64
+ 0, // Offset32
+ SMM_CPU_OFFSET (x64._R11), // Offset64Lo
+ SMM_CPU_OFFSET (x64._R11) + 4, // Offset64Hi
+ TRUE // Writeable
+ }, // EFI_SMM_SAVE_STATE_REGISTER_R11 = 33
+
+ {
+ 0, // Width32
+ 8, // Width64
+ 0, // Offset32
+ SMM_CPU_OFFSET (x64._R12), // Offset64Lo
+ SMM_CPU_OFFSET (x64._R12) + 4, // Offset64Hi
+ TRUE // Writeable
+ }, // EFI_SMM_SAVE_STATE_REGISTER_R12 = 34
+
+ {
+ 0, // Width32
+ 8, // Width64
+ 0, // Offset32
+ SMM_CPU_OFFSET (x64._R13), // Offset64Lo
+ SMM_CPU_OFFSET (x64._R13) + 4, // Offset64Hi
+ TRUE // Writeable
+ }, // EFI_SMM_SAVE_STATE_REGISTER_R13 = 35
+
+ {
+ 0, // Width32
+ 8, // Width64
+ 0, // Offset32
+ SMM_CPU_OFFSET (x64._R14), // Offset64Lo
+ SMM_CPU_OFFSET (x64._R14) + 4, // Offset64Hi
+ TRUE // Writeable
+ }, // EFI_SMM_SAVE_STATE_REGISTER_R14 = 36
+
+ {
+ 0, // Width32
+ 8, // Width64
+ 0, // Offset32
+ SMM_CPU_OFFSET (x64._R15), // Offset64Lo
+ SMM_CPU_OFFSET (x64._R15) + 4, // Offset64Hi
+ TRUE // Writeable
+ }, // EFI_SMM_SAVE_STATE_REGISTER_R15 = 37
+
+ {
+ 4, // Width32
+ 8, // Width64
+ SMM_CPU_OFFSET (x86._EAX), // Offset32
+ SMM_CPU_OFFSET (x64._RAX), // Offset64Lo
+ SMM_CPU_OFFSET (x64._RAX) + 4, // Offset64Hi
+ TRUE // Writeable
+ }, // EFI_SMM_SAVE_STATE_REGISTER_RAX = 38
+
+ {
+ 4, // Width32
+ 8, // Width64
+ SMM_CPU_OFFSET (x86._EBX), // Offset32
+ SMM_CPU_OFFSET (x64._RBX), // Offset64Lo
+ SMM_CPU_OFFSET (x64._RBX) + 4, // Offset64Hi
+ TRUE // Writeable
+ }, // EFI_SMM_SAVE_STATE_REGISTER_RBX = 39
+
+ {
+ 4, // Width32
+ 8, // Width64
+ SMM_CPU_OFFSET (x86._ECX), // Offset32
+ SMM_CPU_OFFSET (x64._RCX), // Offset64Lo
+ SMM_CPU_OFFSET (x64._RCX) + 4, // Offset64Hi
+ TRUE // Writeable
+ }, // EFI_SMM_SAVE_STATE_REGISTER_RCX = 40
+
+ {
+ 4, // Width32
+ 8, // Width64
+ SMM_CPU_OFFSET (x86._EDX), // Offset32
+ SMM_CPU_OFFSET (x64._RDX), // Offset64Lo
+ SMM_CPU_OFFSET (x64._RDX) + 4, // Offset64Hi
+ TRUE // Writeable
+ }, // EFI_SMM_SAVE_STATE_REGISTER_RDX = 41
+
+ {
+ 4, // Width32
+ 8, // Width64
+ SMM_CPU_OFFSET (x86._ESP), // Offset32
+ SMM_CPU_OFFSET (x64._RSP), // Offset64Lo
+ SMM_CPU_OFFSET (x64._RSP) + 4, // Offset64Hi
+ TRUE // Writeable
+ }, // EFI_SMM_SAVE_STATE_REGISTER_RSP = 42
+
+ {
+ 4, // Width32
+ 8, // Width64
+ SMM_CPU_OFFSET (x86._EBP), // Offset32
+ SMM_CPU_OFFSET (x64._RBP), // Offset64Lo
+ SMM_CPU_OFFSET (x64._RBP) + 4, // Offset64Hi
+ TRUE // Writeable
+ }, // EFI_SMM_SAVE_STATE_REGISTER_RBP = 43
+
+ {
+ 4, // Width32
+ 8, // Width64
+ SMM_CPU_OFFSET (x86._ESI), // Offset32
+ SMM_CPU_OFFSET (x64._RSI), // Offset64Lo
+ SMM_CPU_OFFSET (x64._RSI) + 4, // Offset64Hi
+ TRUE // Writeable
+ }, // EFI_SMM_SAVE_STATE_REGISTER_RSI = 44
+
+ {
+ 4, // Width32
+ 8, // Width64
+ SMM_CPU_OFFSET (x86._EDI), // Offset32
+ SMM_CPU_OFFSET (x64._RDI), // Offset64Lo
+ SMM_CPU_OFFSET (x64._RDI) + 4, // Offset64Hi
+ TRUE // Writeable
+ }, // EFI_SMM_SAVE_STATE_REGISTER_RDI = 45
+
+ {
+ 4, // Width32
+ 8, // Width64
+ SMM_CPU_OFFSET (x86._EIP), // Offset32
+ SMM_CPU_OFFSET (x64._RIP), // Offset64Lo
+ SMM_CPU_OFFSET (x64._RIP) + 4, // Offset64Hi
+ TRUE // Writeable
+ }, // EFI_SMM_SAVE_STATE_REGISTER_RIP = 46
+
+ {
+ 4, // Width32
+ 8, // Width64
+ SMM_CPU_OFFSET (x86._EFLAGS), // Offset32
+ SMM_CPU_OFFSET (x64._RFLAGS), // Offset64Lo
+ SMM_CPU_OFFSET (x64._RFLAGS) + 4, // Offset64Hi
+ TRUE // Writeable
+ }, // EFI_SMM_SAVE_STATE_REGISTER_RFLAGS = 51
+
+ {
+ 4, // Width32
+ 8, // Width64
+ SMM_CPU_OFFSET (x86._CR0), // Offset32
+ SMM_CPU_OFFSET (x64._CR0), // Offset64Lo
+ SMM_CPU_OFFSET (x64._CR0) + 4, // Offset64Hi
+ FALSE // Writeable
+ }, // EFI_SMM_SAVE_STATE_REGISTER_CR0 = 52
+
+ {
+ 4, // Width32
+ 8, // Width64
+ SMM_CPU_OFFSET (x86._CR3), // Offset32
+ SMM_CPU_OFFSET (x64._CR3), // Offset64Lo
+ SMM_CPU_OFFSET (x64._CR3) + 4, // Offset64Hi
+ FALSE // Writeable
+ }, // EFI_SMM_SAVE_STATE_REGISTER_CR3 = 53
+
+ {
+ 0, // Width32
+ 4, // Width64
+ 0, // Offset32
+ SMM_CPU_OFFSET (x64._CR4), // Offset64Lo
+ SMM_CPU_OFFSET (x64._CR4) + 4, // Offset64Hi
+ FALSE // Writeable
+ }, // EFI_SMM_SAVE_STATE_REGISTER_CR4 = 54
};
//
// No support for I/O restart
//
/**
Read information from the CPU save state.
@param Register Specifies the CPU register to read form the save state.
@retval 0 Register is not valid
@retval >0 Index into mSmmCpuWidthOffset[] associated with Register
**/
static UINTN
GetRegisterIndex (
IN EFI_SMM_SAVE_STATE_REGISTER Register
)
{
UINTN Index;
UINTN Offset;
- for (Index = 0, Offset = SMM_SAVE_STATE_REGISTER_FIRST_INDEX; mSmmCpuRegisterRanges[Index].Length != 0; Index++) {
- if (Register >= mSmmCpuRegisterRanges[Index].Start && Register <= mSmmCpuRegisterRanges[Index].End) {
+ for (Index = 0, Offset = SMM_SAVE_STATE_REGISTER_FIRST_INDEX;
+ mSmmCpuRegisterRanges[Index].Length != 0;
+ Index++) {
+ if (Register >= mSmmCpuRegisterRanges[Index].Start &&
+ Register <= mSmmCpuRegisterRanges[Index].End) {
return Register - mSmmCpuRegisterRanges[Index].Start + Offset;
}
Offset += mSmmCpuRegisterRanges[Index].Length;
}
return 0;
}
/**
Read a CPU Save State register on the target processor.
- This function abstracts the differences that whether the CPU Save State register is in the
- IA32 CPU Save State Map or X64 CPU Save State Map.
+ This function abstracts the differences that whether the CPU Save State
+ register is in the IA32 CPU Save State Map or X64 CPU Save State Map.
- This function supports reading a CPU Save State register in SMBase relocation handler.
+ This function supports reading a CPU Save State register in SMBase relocation
+ handler.
- @param[in] CpuIndex Specifies the zero-based index of the CPU save state.
+ @param[in] CpuIndex Specifies the zero-based index of the CPU save
+ state.
@param[in] RegisterIndex Index into mSmmCpuWidthOffset[] look up table.
- @param[in] Width The number of bytes to read from the CPU save state.
- @param[out] Buffer Upon return, this holds the CPU register value read from the save state.
+ @param[in] Width The number of bytes to read from the CPU save
+ state.
+ @param[out] Buffer Upon return, this holds the CPU register value
+ read from the save state.
@retval EFI_SUCCESS The register was read from Save State.
- @retval EFI_NOT_FOUND The register is not defined for the Save State of Processor.
+ @retval EFI_NOT_FOUND The register is not defined for the Save State
+ of Processor.
@retval EFI_INVALID_PARAMTER This or Buffer is NULL.
**/
static EFI_STATUS
ReadSaveStateRegisterByIndex (
IN UINTN CpuIndex,
IN UINTN RegisterIndex,
IN UINTN Width,
OUT VOID *Buffer
)
{
QEMU_SMRAM_SAVE_STATE_MAP *CpuSaveState;
CpuSaveState = (QEMU_SMRAM_SAVE_STATE_MAP *)gSmst->CpuSaveState[CpuIndex];
if ((CpuSaveState->x86.SMMRevId & 0xFFFF) == 0) {
//
- // If 32-bit mode width is zero, then the specified register can not be accessed
+ // If 32-bit mode width is zero, then the specified register can not be
+ // accessed
//
if (mSmmCpuWidthOffset[RegisterIndex].Width32 == 0) {
return EFI_NOT_FOUND;
}
//
- // If Width is bigger than the 32-bit mode width, then the specified register can not be accessed
+ // If Width is bigger than the 32-bit mode width, then the specified
+ // register can not be accessed
//
if (Width > mSmmCpuWidthOffset[RegisterIndex].Width32) {
return EFI_INVALID_PARAMETER;
}
//
// Write return buffer
//
ASSERT(CpuSaveState != NULL);
- CopyMem(Buffer, (UINT8 *)CpuSaveState + mSmmCpuWidthOffset[RegisterIndex].Offset32, Width);
+ CopyMem (
+ Buffer,
+ (UINT8 *)CpuSaveState + mSmmCpuWidthOffset[RegisterIndex].Offset32,
+ Width
+ );
} else {
//
- // If 64-bit mode width is zero, then the specified register can not be accessed
+ // If 64-bit mode width is zero, then the specified register can not be
+ // accessed
//
if (mSmmCpuWidthOffset[RegisterIndex].Width64 == 0) {
return EFI_NOT_FOUND;
}
//
- // If Width is bigger than the 64-bit mode width, then the specified register can not be accessed
+ // If Width is bigger than the 64-bit mode width, then the specified
+ // register can not be accessed
//
if (Width > mSmmCpuWidthOffset[RegisterIndex].Width64) {
return EFI_INVALID_PARAMETER;
}
//
// Write lower 32-bits of return buffer
//
- CopyMem(Buffer, (UINT8 *)CpuSaveState + mSmmCpuWidthOffset[RegisterIndex].Offset64Lo, MIN(4, Width));
+ CopyMem (
+ Buffer,
+ (UINT8 *)CpuSaveState + mSmmCpuWidthOffset[RegisterIndex].Offset64Lo,
+ MIN (4, Width)
+ );
if (Width >= 4) {
//
// Write upper 32-bits of return buffer
//
- CopyMem((UINT8 *)Buffer + 4, (UINT8 *)CpuSaveState + mSmmCpuWidthOffset[RegisterIndex].Offset64Hi, Width - 4);
+ CopyMem (
+ (UINT8 *)Buffer + 4,
+ (UINT8 *)CpuSaveState + mSmmCpuWidthOffset[RegisterIndex].Offset64Hi,
+ Width - 4
+ );
}
}
return EFI_SUCCESS;
}
/**
Read an SMM Save State register on the target processor. If this function
returns EFI_UNSUPPORTED, then the caller is responsible for reading the
SMM Save Sate register.
@param[in] CpuIndex The index of the CPU to read the SMM Save State. The
value must be between 0 and the NumberOfCpus field in
the System Management System Table (SMST).
@param[in] Register The SMM Save State register to read.
@param[in] Width The number of bytes to read from the CPU save state.
@param[out] Buffer Upon return, this holds the CPU register value read
from the save state.
@retval EFI_SUCCESS The register was read from Save State.
@retval EFI_INVALID_PARAMTER Buffer is NULL.
- @retval EFI_UNSUPPORTED This function does not support reading Register.
-
+ @retval EFI_UNSUPPORTED This function does not support reading
+ Register.
**/
EFI_STATUS
EFIAPI
SmmCpuFeaturesReadSaveStateRegister (
IN UINTN CpuIndex,
IN EFI_SMM_SAVE_STATE_REGISTER Register,
IN UINTN Width,
OUT VOID *Buffer
)
{
UINTN RegisterIndex;
QEMU_SMRAM_SAVE_STATE_MAP *CpuSaveState;
//
// Check for special EFI_SMM_SAVE_STATE_REGISTER_LMA
//
if (Register == EFI_SMM_SAVE_STATE_REGISTER_LMA) {
//
// Only byte access is supported for this register
//
@@ -657,178 +1005,202 @@ SmmCpuFeaturesReadSaveStateRegister (
*(UINT8 *)Buffer = 64;
}
return EFI_SUCCESS;
}
//
// Check for special EFI_SMM_SAVE_STATE_REGISTER_IO
//
if (Register == EFI_SMM_SAVE_STATE_REGISTER_IO) {
return EFI_NOT_FOUND;
}
//
// Convert Register to a register lookup table index. Let
// PiSmmCpuDxeSmm implement other special registers (currently
// there is only EFI_SMM_SAVE_STATE_REGISTER_PROCESSOR_ID).
//
RegisterIndex = GetRegisterIndex (Register);
if (RegisterIndex == 0) {
- return Register < EFI_SMM_SAVE_STATE_REGISTER_IO ? EFI_NOT_FOUND : EFI_UNSUPPORTED;
+ return (Register < EFI_SMM_SAVE_STATE_REGISTER_IO ?
+ EFI_NOT_FOUND :
+ EFI_UNSUPPORTED);
}
return ReadSaveStateRegisterByIndex (CpuIndex, RegisterIndex, Width, Buffer);
}
/**
Writes an SMM Save State register on the target processor. If this function
returns EFI_UNSUPPORTED, then the caller is responsible for writing the
SMM Save Sate register.
@param[in] CpuIndex The index of the CPU to write the SMM Save State. The
value must be between 0 and the NumberOfCpus field in
the System Management System Table (SMST).
@param[in] Register The SMM Save State register to write.
@param[in] Width The number of bytes to write to the CPU save state.
@param[in] Buffer Upon entry, this holds the new CPU register value.
@retval EFI_SUCCESS The register was written to Save State.
@retval EFI_INVALID_PARAMTER Buffer is NULL.
- @retval EFI_UNSUPPORTED This function does not support writing Register.
+ @retval EFI_UNSUPPORTED This function does not support writing
+ Register.
**/
EFI_STATUS
EFIAPI
SmmCpuFeaturesWriteSaveStateRegister (
IN UINTN CpuIndex,
IN EFI_SMM_SAVE_STATE_REGISTER Register,
IN UINTN Width,
IN CONST VOID *Buffer
)
{
UINTN RegisterIndex;
QEMU_SMRAM_SAVE_STATE_MAP *CpuSaveState;
//
// Writes to EFI_SMM_SAVE_STATE_REGISTER_LMA are ignored
//
if (Register == EFI_SMM_SAVE_STATE_REGISTER_LMA) {
return EFI_SUCCESS;
}
//
// Writes to EFI_SMM_SAVE_STATE_REGISTER_IO are not supported
//
if (Register == EFI_SMM_SAVE_STATE_REGISTER_IO) {
return EFI_NOT_FOUND;
}
//
// Convert Register to a register lookup table index. Let
// PiSmmCpuDxeSmm implement other special registers (currently
// there is only EFI_SMM_SAVE_STATE_REGISTER_PROCESSOR_ID).
//
RegisterIndex = GetRegisterIndex (Register);
if (RegisterIndex == 0) {
- return Register < EFI_SMM_SAVE_STATE_REGISTER_IO ? EFI_NOT_FOUND : EFI_UNSUPPORTED;
+ return (Register < EFI_SMM_SAVE_STATE_REGISTER_IO ?
+ EFI_NOT_FOUND :
+ EFI_UNSUPPORTED);
}
CpuSaveState = (QEMU_SMRAM_SAVE_STATE_MAP *)gSmst->CpuSaveState[CpuIndex];
//
// Do not write non-writable SaveState, because it will cause exception.
- //
+ //
if (!mSmmCpuWidthOffset[RegisterIndex].Writeable) {
return EFI_UNSUPPORTED;
}
//
// Check CPU mode
//
if ((CpuSaveState->x86.SMMRevId & 0xFFFF) == 0) {
//
- // If 32-bit mode width is zero, then the specified register can not be accessed
+ // If 32-bit mode width is zero, then the specified register can not be
+ // accessed
//
if (mSmmCpuWidthOffset[RegisterIndex].Width32 == 0) {
return EFI_NOT_FOUND;
}
//
- // If Width is bigger than the 32-bit mode width, then the specified register can not be accessed
+ // If Width is bigger than the 32-bit mode width, then the specified
+ // register can not be accessed
//
if (Width > mSmmCpuWidthOffset[RegisterIndex].Width32) {
return EFI_INVALID_PARAMETER;
}
//
// Write SMM State register
//
ASSERT (CpuSaveState != NULL);
- CopyMem((UINT8 *)CpuSaveState + mSmmCpuWidthOffset[RegisterIndex].Offset32, Buffer, Width);
+ CopyMem (
+ (UINT8 *)CpuSaveState + mSmmCpuWidthOffset[RegisterIndex].Offset32,
+ Buffer,
+ Width
+ );
} else {
//
- // If 64-bit mode width is zero, then the specified register can not be accessed
+ // If 64-bit mode width is zero, then the specified register can not be
+ // accessed
//
if (mSmmCpuWidthOffset[RegisterIndex].Width64 == 0) {
return EFI_NOT_FOUND;
}
//
- // If Width is bigger than the 64-bit mode width, then the specified register can not be accessed
+ // If Width is bigger than the 64-bit mode width, then the specified
+ // register can not be accessed
//
if (Width > mSmmCpuWidthOffset[RegisterIndex].Width64) {
return EFI_INVALID_PARAMETER;
}
//
// Write lower 32-bits of SMM State register
//
- CopyMem((UINT8 *)CpuSaveState + mSmmCpuWidthOffset[RegisterIndex].Offset64Lo, Buffer, MIN (4, Width));
+ CopyMem (
+ (UINT8 *)CpuSaveState + mSmmCpuWidthOffset[RegisterIndex].Offset64Lo,
+ Buffer,
+ MIN (4, Width)
+ );
if (Width >= 4) {
//
// Write upper 32-bits of SMM State register
//
- CopyMem((UINT8 *)CpuSaveState + mSmmCpuWidthOffset[RegisterIndex].Offset64Hi, (UINT8 *)Buffer + 4, Width - 4);
+ CopyMem (
+ (UINT8 *)CpuSaveState + mSmmCpuWidthOffset[RegisterIndex].Offset64Hi,
+ (UINT8 *)Buffer + 4,
+ Width - 4
+ );
}
}
return EFI_SUCCESS;
}
/**
This function is hook point called after the gEfiSmmReadyToLockProtocolGuid
notification is completely processed.
**/
VOID
EFIAPI
SmmCpuFeaturesCompleteSmmReadyToLock (
VOID
)
{
}
/**
- This API provides a method for a CPU to allocate a specific region for storing page tables.
+ This API provides a method for a CPU to allocate a specific region for
+ storing page tables.
This API can be called more once to allocate memory for page tables.
- Allocates the number of 4KB pages of type EfiRuntimeServicesData and returns a pointer to the
- allocated buffer. The buffer returned is aligned on a 4KB boundary. If Pages is 0, then NULL
- is returned. If there is not enough memory remaining to satisfy the request, then NULL is
- returned.
+ Allocates the number of 4KB pages of type EfiRuntimeServicesData and returns
+ a pointer to the allocated buffer. The buffer returned is aligned on a 4KB
+ boundary. If Pages is 0, then NULL is returned. If there is not enough
+ memory remaining to satisfy the request, then NULL is returned.
- This function can also return NULL if there is no preference on where the page tables are allocated in SMRAM.
+ This function can also return NULL if there is no preference on where the
+ page tables are allocated in SMRAM.
@param Pages The number of 4 KB pages to allocate.
@return A pointer to the allocated buffer for page tables.
@retval NULL Fail to allocate a specific region for storing page tables,
- Or there is no preference on where the page tables are allocated in SMRAM.
+ Or there is no preference on where the page tables are
+ allocated in SMRAM.
**/
VOID *
EFIAPI
SmmCpuFeaturesAllocatePageTableMemory (
IN UINTN Pages
)
{
return NULL;
}
--
2.14.1.3.gb7cf6e02401b
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