On 1/23/24 23:52, Michael D Kinney wrote:
> * Add InitializeFloatingPointUnits() to x86 specific file
> * Add GetCpuFamilyModel() to x86 specific file
> * Add GetCpuSteppingId() to x86 specific file
> * Move StandardSignatureIsAuthenticAMD() to x86 specific file.
> * Add CpuLib library class include to all C files.
>
> Cc: Liming Gao <gaolim...@byosoft.com.cn>
> Cc: Zhiguang Liu <zhiguang....@intel.com>
> Cc: Laszlo Ersek <ler...@redhat.com>
> Cc: Qing Huang <qing.hu...@intel.com>
> Signed-off-by: Michael D Kinney <michael.d.kin...@intel.com>
> ---
> .../Library/BaseCpuLibNull/BaseCpuLibNull.c | 17 +----
> .../Library/BaseCpuLibNull/BaseCpuLibNull.inf | 3 +
> .../BaseCpuLibNull/X86BaseCpuLibNull.c | 64 +++++++++++++++++++
> 3 files changed, 69 insertions(+), 15 deletions(-)
> create mode 100644 MdePkg/Library/BaseCpuLibNull/X86BaseCpuLibNull.c
>
> diff --git a/MdePkg/Library/BaseCpuLibNull/BaseCpuLibNull.c
> b/MdePkg/Library/BaseCpuLibNull/BaseCpuLibNull.c
> index 3542cf6921f7..0080022b94ef 100644
> --- a/MdePkg/Library/BaseCpuLibNull/BaseCpuLibNull.c
> +++ b/MdePkg/Library/BaseCpuLibNull/BaseCpuLibNull.c
> @@ -6,6 +6,8 @@
>
> **/
>
> +#include <Library/CpuLib.h>
> +
> /**
> Places the CPU in a sleep state until an interrupt is received.
>
> @@ -35,18 +37,3 @@ CpuFlushTlb (
> )
> {
> }
> -
> -/**
> - 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 FALSE;
> -}
> diff --git a/MdePkg/Library/BaseCpuLibNull/BaseCpuLibNull.inf
> b/MdePkg/Library/BaseCpuLibNull/BaseCpuLibNull.inf
> index a9e8399038a6..9f20d6833f56 100644
> --- a/MdePkg/Library/BaseCpuLibNull/BaseCpuLibNull.inf
> +++ b/MdePkg/Library/BaseCpuLibNull/BaseCpuLibNull.inf
> @@ -22,5 +22,8 @@ [Defines]
> [Sources]
> BaseCpuLibNull.c
>
> +[Sources.IA32, Sources.X64]
> + X86BaseCpuLibNull.c
> +
> [Packages]
> MdePkg/MdePkg.dec
> diff --git a/MdePkg/Library/BaseCpuLibNull/X86BaseCpuLibNull.c
> b/MdePkg/Library/BaseCpuLibNull/X86BaseCpuLibNull.c
> new file mode 100644
> index 000000000000..4469bcc767cf
> --- /dev/null
> +++ b/MdePkg/Library/BaseCpuLibNull/X86BaseCpuLibNull.c
> @@ -0,0 +1,64 @@
> +/** @file
> + Null instance of CPU Library for IA32/X64 specific services.
> +
> + Copyright (c) 2024, Intel Corporation. All rights reserved.<BR>
> + SPDX-License-Identifier: BSD-2-Clause-Patent
> +
> +**/
> +
> +#include <Library/CpuLib.h>
> +
> +/**
> + 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 FALSE;
> +}
> +
> +/**
> + Return the 32bit CPU family and model value.
> + @return CPUID[01h].EAX with Processor Type and Stepping ID cleared.
> +**/
> +UINT32
> +EFIAPI
> +GetCpuFamilyModel (
> + VOID
> + )
> +{
> + return 0;
> +}
> +
> +/**
> + Return the CPU stepping ID.
> + @return CPU stepping ID value in CPUID[01h].EAX.
> +**/
> +UINT8
> +EFIAPI
> +GetCpuSteppingId (
> + VOID
> + )
> +{
> + return 0;
> +}
Reviewed-by: Laszlo Ersek <ler...@redhat.com>
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