On Wed, Nov 15, 2017 at 02:20:48PM +0000, Ard Biesheuvel wrote:
> The only user of ArmPlatformLib's ArmGetCpuCountPerCluster () is itself
> an ArmPlatformLib implementation, i.e., ArmVExpressLibRTSM.
> 
> Given that we'd prefer to get rid of ArmPlatformLib entirely, let's
> remove ArmGetCpuCountPerCluster () from the API as a first step.
> 
> Contributed-under: TianoCore Contribution Agreement 1.1
> Signed-off-by: Ard Biesheuvel <[email protected]>

I'm thinking this is technically a bit iffy. But the less iffy way
would be to add a local .h file to hold the prototype, which feels a
bit crazy for a transitional thing. So:
Reviewed-by: Leif Lindholm <[email protected]>

> ---
> 
> This is another prerequisite of the edk2-platforms series I am about to
> post. After that, I will follow up with a couple of cleanup patches that
> get rid of a lot of ArmPlatformPkg cruft.
> 
>  ArmPlatformPkg/ArmVExpressPkg/Library/ArmVExpressLibRTSM/RTSM.c | 13 
> +++++++++++++
>  ArmPlatformPkg/Include/Library/ArmPlatformLib.h                 | 13 
> -------------
>  2 files changed, 13 insertions(+), 13 deletions(-)
> 
> diff --git a/ArmPlatformPkg/ArmVExpressPkg/Library/ArmVExpressLibRTSM/RTSM.c 
> b/ArmPlatformPkg/ArmVExpressPkg/Library/ArmVExpressLibRTSM/RTSM.c
> index d8d1c9ac26dd..11dd7ff1bfb0 100644
> --- a/ArmPlatformPkg/ArmVExpressPkg/Library/ArmVExpressLibRTSM/RTSM.c
> +++ b/ArmPlatformPkg/ArmVExpressPkg/Library/ArmVExpressLibRTSM/RTSM.c
> @@ -21,6 +21,19 @@
>  
>  #include <ArmPlatform.h>
>  
> +/**
> +  Return the core per cluster. The method may differ per core type
> +
> +  This function might be called from assembler before any stack is set.
> +
> +  @return   Return the core count per cluster
> +
> +**/
> +UINTN
> +ArmGetCpuCountPerCluster (
> +  VOID
> +  );
> +
>  ARM_CORE_INFO mVersatileExpressMpCoreInfoTable[] = {
>    {
>      // Cluster 0, Core 0
> diff --git a/ArmPlatformPkg/Include/Library/ArmPlatformLib.h 
> b/ArmPlatformPkg/Include/Library/ArmPlatformLib.h
> index fe3bc4bb8e6c..77561a3d05b3 100644
> --- a/ArmPlatformPkg/Include/Library/ArmPlatformLib.h
> +++ b/ArmPlatformPkg/Include/Library/ArmPlatformLib.h
> @@ -41,19 +41,6 @@ typedef struct {
>  } ARM_SYSTEM_MEMORY_REGION_DESCRIPTOR;
>  
>  /**
> -  Return the core per cluster. The method may differ per core type
> -
> -  This function might be called from assembler before any stack is set.
> -
> -  @return   Return the core count per cluster
> -
> -**/
> -UINTN
> -ArmGetCpuCountPerCluster (
> -  VOID
> -  );
> -
> -/**
>    Return the core position from the value of its MpId register
>  
>    This function returns the core position from the position 0 in the 
> processor.
> -- 
> 2.11.0
> 
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