[edk2-devel] [PATCH v1] MdePkg/BaseCpuLibNull: Add stub function of StandardSignatureIsAuthenticAMD() in CpuLibNull instance

[edk2-devel] [PATCH v1] MdePkg/BaseCpuLibNull: Add stub function of StandardSignatureIsAuthenticAMD() in CpuLibNull instance

[Huang, Qing]

CpuLib.h exposes StandardSignatureIsAuthenticAMD() API and we require stub function in its BaseCpuLibNull library
instance to avoid potential link issue.

Signed-off-by: Qing Huang <qing.huang@intel.com>
---
 MdePkg/Library/BaseCpuLibNull/BaseCpuLibNull.c | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/MdePkg/Library/BaseCpuLibNull/BaseCpuLibNull.c b/MdePkg/Library/BaseCpuLibNull/BaseCpuLibNull.c
index 3ba7a35096..ba7981551d 100644
--- a/MdePkg/Library/BaseCpuLibNull/BaseCpuLibNull.c
+++ b/MdePkg/Library/BaseCpuLibNull/BaseCpuLibNull.c
@@ -1,7 +1,7 @@
 /** @file
   Null instance of CPU Library.
 
-  Copyright (c) 2020, Intel Corporation. All rights reserved.<BR>
+  Copyright (c) 2020 - 2024, Intel Corporation. All rights reserved.<BR>
   SPDX-License-Identifier: BSD-2-Clause-Patent
 
 **/
@@ -35,3 +35,18 @@ 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;
+}
-- 
2.42.0.windows.2



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Re: [edk2-devel] [PATCH v1] MdePkg/BaseCpuLibNull: Add stub function of StandardSignatureIsAuthenticAMD() in CpuLibNull instance

[Laszlo Ersek]

On 1/23/24 12:36, Huang, Qing wrote:
> CpuLib.h exposes StandardSignatureIsAuthenticAMD() API and we require stub function in its BaseCpuLibNull library
> instance to avoid potential link issue.
> 
> Signed-off-by: Qing Huang <qing.huang@intel.com>
> ---
>  MdePkg/Library/BaseCpuLibNull/BaseCpuLibNull.c | 17 ++++++++++++++++-
>  1 file changed, 16 insertions(+), 1 deletion(-)
> 
> diff --git a/MdePkg/Library/BaseCpuLibNull/BaseCpuLibNull.c b/MdePkg/Library/BaseCpuLibNull/BaseCpuLibNull.c
> index 3ba7a35096..ba7981551d 100644
> --- a/MdePkg/Library/BaseCpuLibNull/BaseCpuLibNull.c
> +++ b/MdePkg/Library/BaseCpuLibNull/BaseCpuLibNull.c
> @@ -1,7 +1,7 @@
>  /** @file
>    Null instance of CPU Library.
>  
> -  Copyright (c) 2020, Intel Corporation. All rights reserved.<BR>
> +  Copyright (c) 2020 - 2024, Intel Corporation. All rights reserved.<BR>
>    SPDX-License-Identifier: BSD-2-Clause-Patent
>  
>  **/
> @@ -35,3 +35,18 @@ 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;
> +}

(1) Could we complete the Null instance with all the missing functions,
in one go? Such as: InitializeFloatingPointUnits,
StandardSignatureIsAuthenticAMD, GetCpuFamilyModel, GetCpuSteppingId?

(2) All four of the mentioned APIs are only declared for IA32 and X64,
by the lib class header. Therefore their stub implementations, including
that of StandardSignatureIsAuthenticAMD(), should be restricted to IA32
and X64 too.

Thanks
Laszlo



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Re: [edk2-devel] [PATCH v1] MdePkg/BaseCpuLibNull: Add stub function of StandardSignatureIsAuthenticAMD() in CpuLibNull instance

[Michael D Kinney]

Hi Qing,

Thank you for this update to add the missing API to BaseCpuLibNull.

There are a few very minor comments below.  I will make those updates
in the PR for merge.  With those changes:

Reviewed-by: Michael D Kinney <michael.d.kinney@intel.com>

Mike

> -----Original Message-----
> From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of Huang,
> Qing
> Sent: Tuesday, January 23, 2024 3:37 AM
> To: devel@edk2.groups.io
> Cc: Huang, Qing <qing.huang@intel.com>
> Subject: [edk2-devel] [PATCH v1] MdePkg/BaseCpuLibNull: Add stub
> function of StandardSignatureIsAuthenticAMD() in CpuLibNull instance

Subject line too long

> 
> CpuLib.h exposes StandardSignatureIsAuthenticAMD() API and we require
> stub function in its BaseCpuLibNull library
> instance to avoid potential link issue.
> 

Missing Cc for MdePkg maintainers.

> Signed-off-by: Qing Huang <qing.huang@intel.com>
> ---
>  MdePkg/Library/BaseCpuLibNull/BaseCpuLibNull.c | 17 ++++++++++++++++-
>  1 file changed, 16 insertions(+), 1 deletion(-)
> 
> diff --git a/MdePkg/Library/BaseCpuLibNull/BaseCpuLibNull.c
> b/MdePkg/Library/BaseCpuLibNull/BaseCpuLibNull.c
> index 3ba7a35096..ba7981551d 100644
> --- a/MdePkg/Library/BaseCpuLibNull/BaseCpuLibNull.c
> +++ b/MdePkg/Library/BaseCpuLibNull/BaseCpuLibNull.c
> @@ -1,7 +1,7 @@
>  /** @file
>    Null instance of CPU Library.
> 
> -  Copyright (c) 2020, Intel Corporation. All rights reserved.<BR>
> +  Copyright (c) 2020 - 2024, Intel Corporation. All rights
> reserved.<BR>

Updating end year not required for Intel copyright statements.

>    SPDX-License-Identifier: BSD-2-Clause-Patent
> 
>  **/
> @@ -35,3 +35,18 @@ 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;
> +}
> --
> 2.42.0.windows.2
> 
> 
> 
> 
> 



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Re: [edk2-devel] [PATCH v1] MdePkg/BaseCpuLibNull: Add stub function of StandardSignatureIsAuthenticAMD() in CpuLibNull instance

[Michael D Kinney]

Merged: https://github.com/tianocore/edk2/pull/5291

> -----Original Message-----
> From: Kinney, Michael D <michael.d.kinney@intel.com>
> Sent: Tuesday, January 23, 2024 9:26 AM
> To: devel@edk2.groups.io; Huang, Qing <qing.huang@intel.com>
> Cc: Kinney, Michael D <michael.d.kinney@intel.com>
> Subject: RE: [edk2-devel] [PATCH v1] MdePkg/BaseCpuLibNull: Add stub
> function of StandardSignatureIsAuthenticAMD() in CpuLibNull instance
> 
> Hi Qing,
> 
> Thank you for this update to add the missing API to BaseCpuLibNull.
> 
> There are a few very minor comments below.  I will make those updates
> in the PR for merge.  With those changes:
> 
> Reviewed-by: Michael D Kinney <michael.d.kinney@intel.com>
> 
> Mike
> 
> > -----Original Message-----
> > From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of Huang,
> > Qing
> > Sent: Tuesday, January 23, 2024 3:37 AM
> > To: devel@edk2.groups.io
> > Cc: Huang, Qing <qing.huang@intel.com>
> > Subject: [edk2-devel] [PATCH v1] MdePkg/BaseCpuLibNull: Add stub
> > function of StandardSignatureIsAuthenticAMD() in CpuLibNull instance
> 
> Subject line too long
> 
> >
> > CpuLib.h exposes StandardSignatureIsAuthenticAMD() API and we require
> > stub function in its BaseCpuLibNull library
> > instance to avoid potential link issue.
> >
> 
> Missing Cc for MdePkg maintainers.
> 
> > Signed-off-by: Qing Huang <qing.huang@intel.com>
> > ---
> >  MdePkg/Library/BaseCpuLibNull/BaseCpuLibNull.c | 17 ++++++++++++++++-
> >  1 file changed, 16 insertions(+), 1 deletion(-)
> >
> > diff --git a/MdePkg/Library/BaseCpuLibNull/BaseCpuLibNull.c
> > b/MdePkg/Library/BaseCpuLibNull/BaseCpuLibNull.c
> > index 3ba7a35096..ba7981551d 100644
> > --- a/MdePkg/Library/BaseCpuLibNull/BaseCpuLibNull.c
> > +++ b/MdePkg/Library/BaseCpuLibNull/BaseCpuLibNull.c
> > @@ -1,7 +1,7 @@
> >  /** @file
> >    Null instance of CPU Library.
> >
> > -  Copyright (c) 2020, Intel Corporation. All rights reserved.<BR>
> > +  Copyright (c) 2020 - 2024, Intel Corporation. All rights
> > reserved.<BR>
> 
> Updating end year not required for Intel copyright statements.
> 
> >    SPDX-License-Identifier: BSD-2-Clause-Patent
> >
> >  **/
> > @@ -35,3 +35,18 @@ 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;
> > +}
> > --
> > 2.42.0.windows.2
> >
> >
> >
> > 
> >



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Re: [edk2-devel] [PATCH v1] MdePkg/BaseCpuLibNull: Add stub function of StandardSignatureIsAuthenticAMD() in CpuLibNull instance

[Michael D Kinney]

Hi Laszlo,

Thanks for the feedback.  Sorry I missed this email this morning.

I will prepare a 2nd patch with these additional updates.

Mike

> -----Original Message-----
> From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of Laszlo
> Ersek
> Sent: Tuesday, January 23, 2024 5:57 AM
> To: devel@edk2.groups.io; Huang, Qing <qing.huang@intel.com>
> Subject: Re: [edk2-devel] [PATCH v1] MdePkg/BaseCpuLibNull: Add stub
> function of StandardSignatureIsAuthenticAMD() in CpuLibNull instance
> 
> On 1/23/24 12:36, Huang, Qing wrote:
> > CpuLib.h exposes StandardSignatureIsAuthenticAMD() API and we require
> stub function in its BaseCpuLibNull library
> > instance to avoid potential link issue.
> >
> > Signed-off-by: Qing Huang <qing.huang@intel.com>
> > ---
> >  MdePkg/Library/BaseCpuLibNull/BaseCpuLibNull.c | 17 ++++++++++++++++-
> >  1 file changed, 16 insertions(+), 1 deletion(-)
> >
> > diff --git a/MdePkg/Library/BaseCpuLibNull/BaseCpuLibNull.c
> b/MdePkg/Library/BaseCpuLibNull/BaseCpuLibNull.c
> > index 3ba7a35096..ba7981551d 100644
> > --- a/MdePkg/Library/BaseCpuLibNull/BaseCpuLibNull.c
> > +++ b/MdePkg/Library/BaseCpuLibNull/BaseCpuLibNull.c
> > @@ -1,7 +1,7 @@
> >  /** @file
> >    Null instance of CPU Library.
> >
> > -  Copyright (c) 2020, Intel Corporation. All rights reserved.<BR>
> > +  Copyright (c) 2020 - 2024, Intel Corporation. All rights
> reserved.<BR>
> >    SPDX-License-Identifier: BSD-2-Clause-Patent
> >
> >  **/
> > @@ -35,3 +35,18 @@ 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;
> > +}
> 
> (1) Could we complete the Null instance with all the missing functions,
> in one go? Such as: InitializeFloatingPointUnits,
> StandardSignatureIsAuthenticAMD, GetCpuFamilyModel, GetCpuSteppingId?
> 
> (2) All four of the mentioned APIs are only declared for IA32 and X64,
> by the lib class header. Therefore their stub implementations, including
> that of StandardSignatureIsAuthenticAMD(), should be restricted to IA32
> and X64 too.
> 
> Thanks
> Laszlo
> 
> 
> 
> 
> 



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