Files
system76-edk2/UefiCpuPkg/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLibNoStm.c
Michael Kubacki 3e062ea498 UefiCpuPkg/SmmCpuFeaturesLib: Move multi-instance function decl to header
FinishSmmCpuFeaturesInitializeProcessor() is a multi-instance
internal library function that is currently not declared in a
header file but embedded in "SmmCpuFeaturesLib.c".

This change cleans up the declaration moving it to a new header
file "CpuFeaturesLib.h" and removing the local declaration in
"SmmCpuFeaturesLib.c".

Cc: Eric Dong <eric.dong@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <20210217213227.1277-2-mikuback@linux.microsoft.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>
[lersek@redhat.com: replace the guard macro "_CPU_FEATURES_LIB_H_" with
 "CPU_FEATURES_LIB_H_", for fixing ECC 8003, per commit 6ffbb3581a]
2021-03-08 18:07:32 +00:00

85 lines
2.9 KiB
C

/** @file
The CPU specific programming for PiSmmCpuDxeSmm module when STM support
is not included.
Copyright (c) 2010 - 2016, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include <PiSmm.h>
#include <Library/SmmCpuFeaturesLib.h>
#include "CpuFeaturesLib.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
)
{
}