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UefiCpuPkg/SmmCpuFeaturesLib: Split into two files 

Split the default implementation of the SmmCpuFeaturesLib
into two files to prepare for the addition of the STM
specific SmmCpuFeaturesLib implementation.  The STM
specific implementation installs a different SMI entry
handler and initialize the MSEG specific MSR at the end
of SmmCpuFeaturesInitializeProcessor().

This patch does not introduce any functional changes
to the default implementation of the SmmCpuFeaturesLib.

Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jeff Fan <jeff.fan@intel.com>
Cc: Feng Tian <feng.tian@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Michael Kinney <michael.d.kinney@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
Reviewed-by: Jeff Fan <jeff.fan@intel.com>
This commit is contained in:
Michael Kinney 2016-11-17 20:54:19 -08:00 committed by Feng Tian
parent f7c11c534c
commit 4c6351db25
3 changed files with 107 additions and 62 deletions
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77
UefiCpuPkg/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.c
View File

@ -41,6 +41,16 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
#define SMM_FEATURES_LIB_IA32_MCA_CAP 0x17D
#define SMM_CODE_ACCESS_CHK_BIT BIT58
/**
Internal worker function that is called to complete CPU initialization at the
end of SmmCpuFeaturesInitializeProcessor()
**/
VOID
FinishSmmCpuFeaturesInitializeProcessor (
VOID
);
//
// Set default value to assume SMRR is not supported
//
@ -257,7 +267,7 @@ SmmCpuFeaturesInitializeProcessor (
// Print message and halt if CPU is Monarch
//
if (IsMonarch) {
DEBUG ((EFI_D_ERROR, "SMM Base/Size does not meet alignment/size requirement!\n"));
DEBUG ((DEBUG_ERROR, "SMM Base/Size does not meet alignment/size requirement!\n"));
CpuDeadLoop ();
}
} else {
@ -296,6 +306,11 @@ SmmCpuFeaturesInitializeProcessor (
}
}
}
//
// Call internal worker function that completes the CPU initialization
//
FinishSmmCpuFeaturesInitializeProcessor ();
}
/**
@ -356,66 +371,6 @@ SmmCpuFeaturesSmmRelocationComplete (
{
}
/**
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.
**/
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.
@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.
**/
VOID
EFIAPI
SmmCpuFeaturesInstallSmiHandler (
IN UINTN CpuIndex,
IN UINT32 SmBase,
IN VOID *SmiStack,
IN UINTN StackSize,
IN UINTN GdtBase,
IN UINTN GdtSize,
IN UINTN IdtBase,
IN UINTN IdtSize,
IN UINT32 Cr3
)
{
}
/**
Determines if MTRR registers must be configured to set SMRAM cache-ability
when executing in System Management Mode.

3
UefiCpuPkg/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.inf
View File

@ -1,7 +1,7 @@
## @file
# The CPU specific programming for PiSmmCpuDxeSmm module.
#
# Copyright (c) 2009 - 2015, Intel Corporation. All rights reserved.<BR>
# Copyright (c) 2009 - 2016, 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
@ -24,6 +24,7 @@
[Sources]
SmmCpuFeaturesLib.c
SmmCpuFeaturesLibNoStm.c
[Packages]
MdePkg/MdePkg.dec

89
UefiCpuPkg/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLibNoStm.c Normal file
View File

@ -0,0 +1,89 @@
/** @file
The CPU specific programming for PiSmmCpuDxeSmm module when STM support
is not included.
Copyright (c) 2010 - 2016, 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.
**/
#include <PiSmm.h>
#include <Library/SmmCpuFeaturesLib.h>
/**
Internal worker function that is called to complete CPU initialization at the
end of SmmCpuFeaturesInitializeProcessor()
**/
VOID
FinishSmmCpuFeaturesInitializeProcessor (
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.
**/
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.
@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.
**/
VOID
EFIAPI
SmmCpuFeaturesInstallSmiHandler (
IN UINTN CpuIndex,
IN UINT32 SmBase,
IN VOID *SmiStack,
IN UINTN StackSize,
IN UINTN GdtBase,
IN UINTN GdtSize,
IN UINTN IdtBase,
IN UINTN IdtSize,
IN UINT32 Cr3
)
{
}