1 files changed, 58 insertions, 0 deletions
diff --git a/Platform/ARM/JunoPkg/Library/ArmJunoLib/AArch64/ArmJunoHelper.S b/Platform/ARM/JunoPkg/Library/ArmJunoLib/AArch64/ArmJunoHelper.S
new file mode 100644
index 0000000000..4bdf08d1a9
--- /dev/null
+++ b/Platform/ARM/JunoPkg/Library/ArmJunoLib/AArch64/ArmJunoHelper.S
@@ -0,0 +1,58 @@
+/** @file
+*
+*  Copyright (c) 2013-2014, ARM Limited. All rights reserved.
+*
+*  This program and the accompanying materials
+*  are licensed and made available under the terms and conditions of the BSD License
+*  which accompanies this distribution.  The full text of the license may be found at
+*  http://opensource.org/licenses/bsd-license.php
+*
+*  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+*  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+*
+**/
+
+#include <AsmMacroIoLibV8.h>
+#include <Library/ArmLib.h>
+
+//UINTN
+//ArmPlatformGetCorePosition (
+//  IN UINTN MpId
+//  );
+// With this function: CorePos = (ClusterId * 2) + CoreId
+ASM_FUNC(ArmPlatformGetCorePosition)
+  and   x1, x0, #ARM_CORE_MASK
+  and   x0, x0, #ARM_CLUSTER_MASK
+  add   x0, x1, x0, LSR #7
+  ret
+
+//UINTN
+//ArmPlatformGetPrimaryCoreMpId (
+//  VOID
+//  );
+ASM_FUNC(ArmPlatformGetPrimaryCoreMpId)
+  ldr   w0, PrimaryCoreMpid
+  ret
+
+//UINTN
+//ArmPlatformIsPrimaryCore (
+//  IN UINTN MpId
+//  );
+ASM_FUNC(ArmPlatformIsPrimaryCore)
+  MOV32 (w1, FixedPcdGet32 (PcdArmPrimaryCoreMask))
+  and   x0, x0, x1
+
+  ldr   w1, PrimaryCoreMpid
+
+  cmp   w0, w1
+  cset  x0, eq
+  ret
+
+ASM_FUNC(ArmPlatformPeiBootAction)
+  // The trusted firmware passes the primary CPU MPID through x0 register.
+  // Save it in a variable.
+  adr  x1, PrimaryCoreMpid
+  str  w0, [x1]
+  ret
+
+PrimaryCoreMpid:  .word    0x0