mirror of
https://github.com/acidanthera/audk.git
synced 2025-08-20 17:18:11 +02:00
b294633c68
There are two libraries: MdePkg/CpuLib and UefiCpuPkg/UefiCpuLib. This patch merges UefiCpuPkg/UefiCpuLib to MdePkg/CpuLib. Change-Id: Ic26f4c2614ed6bd9840f817d50e47ac1de4bd013 Cc: Michael D Kinney <michael.d.kinney@intel.com> Cc: Liming Gao <gaoliming@byosoft.com.cn> Cc: Zhiguang Liu <zhiguang.liu@intel.com> Cc: Eric Dong <eric.dong@intel.com> Cc: Ray Ni <ray.ni@intel.com> Cc: Rahul Kumar <rahul1.kumar@intel.com> Signed-off-by: Yu Pu <yu.pu@intel.com> Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn> Signed-off-by: Zhiguang Liu <zhiguang.liu@intel.com>
93 lines
2.2 KiB
C
93 lines
2.2 KiB
C
/** @file
|
|
Provides CPU architecture specific functions that can not be defined
|
|
in the Base Library due to dependencies on the PAL Library
|
|
|
|
The CPU Library provides services to flush CPU TLBs and place the CPU in a sleep state.
|
|
The implementation of these services on Itanium processors requires the use of PAL Calls.
|
|
PAL Calls require PEI and DXE specific mechanisms to look up PAL Entry Point.
|
|
As a result, these services could not be defined in the Base Library.
|
|
|
|
Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
|
|
SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
|
|
**/
|
|
|
|
#ifndef __CPU_LIB_H__
|
|
#define __CPU_LIB_H__
|
|
|
|
/**
|
|
Places the CPU in a sleep state until an interrupt is received.
|
|
|
|
Places the CPU in a sleep state until an interrupt is received. If interrupts
|
|
are disabled prior to calling this function, then the CPU will be placed in a
|
|
sleep state indefinitely.
|
|
|
|
**/
|
|
VOID
|
|
EFIAPI
|
|
CpuSleep (
|
|
VOID
|
|
);
|
|
|
|
/**
|
|
Flushes all the Translation Lookaside Buffers(TLB) entries in a CPU.
|
|
|
|
Flushes all the Translation Lookaside Buffers(TLB) entries in a CPU.
|
|
|
|
**/
|
|
VOID
|
|
EFIAPI
|
|
CpuFlushTlb (
|
|
VOID
|
|
);
|
|
|
|
#if defined (MDE_CPU_IA32) || defined (MDE_CPU_X64)
|
|
|
|
/**
|
|
Initializes floating point units for requirement of UEFI specification.
|
|
This function initializes floating-point control word to 0x027F (all exceptions
|
|
masked,double-precision, round-to-nearest) and multimedia-extensions control word
|
|
(if supported) to 0x1F80 (all exceptions masked, round-to-nearest, flush to zero
|
|
for masked underflow).
|
|
**/
|
|
VOID
|
|
EFIAPI
|
|
InitializeFloatingPointUnits (
|
|
VOID
|
|
);
|
|
|
|
/**
|
|
Determine if the standard CPU signature is "AuthenticAMD".
|
|
@retval TRUE The CPU signature matches.
|
|
@retval FALSE The CPU signature does not match.
|
|
**/
|
|
BOOLEAN
|
|
EFIAPI
|
|
StandardSignatureIsAuthenticAMD (
|
|
VOID
|
|
);
|
|
|
|
/**
|
|
Return the 32bit CPU family and model value.
|
|
@return CPUID[01h].EAX with Processor Type and Stepping ID cleared.
|
|
**/
|
|
UINT32
|
|
EFIAPI
|
|
GetCpuFamilyModel (
|
|
VOID
|
|
);
|
|
|
|
/**
|
|
Return the CPU stepping ID.
|
|
@return CPU stepping ID value in CPUID[01h].EAX.
|
|
**/
|
|
UINT8
|
|
EFIAPI
|
|
GetCpuSteppingId (
|
|
VOID
|
|
);
|
|
|
|
#endif
|
|
|
|
#endif
|