ArmPlatformPkg/ArmPlatformLib.h: Introduced ArmPlatformGetCorePosition()

The MP ID Register is not enough to know the position of the core in the SoC.
We could have SoC with multi cluster of CPUs that do not contain the
same number of CPUs.
This function should return the position of the CPU in the SoC.

Signed-off-by: Olivier Martin <olivier.martin@arm.com>



git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13770 6f19259b-4bc3-4df7-8a09-765794883524

2 files changed, 14 insertions, 0 deletions

diff --git a/ArmPlatformPkg/Include/Library/ArmPlatformLib.h b/ArmPlatformPkg/Include/Library/ArmPlatformLib.h
index 3d7e1bc248..9f2de60a4a 100644
--- a/ArmPlatformPkg/Include/Library/ArmPlatformLib.h
+++ b/ArmPlatformPkg/Include/Library/ArmPlatformLib.h
@@ -41,6 +41,11 @@ typedef struct {
   UINT64                       NumberOfBytes;
 } ARM_SYSTEM_MEMORY_REGION_DESCRIPTOR;
 
+UINTN
+ArmPlatformGetCorePosition (
+  IN UINTN MpId
+  );
+
 /**
   Return the current Boot Mode
 
diff --git a/BeagleBoardPkg/Library/BeagleBoardLib/BeagleBoard.c b/BeagleBoardPkg/Library/BeagleBoardLib/BeagleBoard.c
index 8f2ab557be..ff4c556872 100755
--- a/BeagleBoardPkg/Library/BeagleBoardLib/BeagleBoard.c
+++ b/BeagleBoardPkg/Library/BeagleBoardLib/BeagleBoard.c
@@ -124,3 +124,12 @@ ArmPlatformGetPlatformPpiList (
   *PpiListSize = 0;
   *PpiList = NULL;
 }
+
+UINTN
+ArmPlatformGetCorePosition (
+  IN UINTN MpId
+  )
+{
+  return 1;
+}
+