new file mode 100644
@@ -0,0 +1,77 @@
+//Based on ArmPlatformPkg/Library/ArmPlatformLibNull/AArch64/ArmPlatformHelper.S
+//
+// Copyright (c) 2012-2013, ARM Limited. All rights reserved.
+// Copyright (c) 2016, Marvell. All rights reserved.
+// Copyright (c) 2017, Linaro 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 <AsmMacroIoLib.h>
+#include <Library/ArmLib.h>
+
+#define CCU_MC_BASE 0xF0001700
+#define CCU_MC_RCR_OFFSET 0x0
+#define CCU_MC_RCR_REMAP_EN BIT0
+#define CCU_MC_RCR_REMAP_SIZE(Size) (((Size) - 1) ^ (SIZE_1MB - 1))
+
+#define CCU_MC_RSBR_OFFSET 0x4
+#define CCU_MC_RSBR_SOURCE_BASE(Base) (((Base) >> 20) << 10)
+#define CCU_MC_RTBR_OFFSET 0x8
+#define CCU_MC_RTBR_TARGET_BASE(Base) (((Base) >> 20) << 10)
+
+ASM_FUNC(ArmPlatformPeiBootAction)
+ .if FixedPcdGet64 (PcdSystemMemoryBase) != 0
+ .err PcdSystemMemoryBase should be 0x0 on this platform!
+ .endif
+
+ .if FixedPcdGet64 (PcdSystemMemorySize) > FixedPcdGet32 (PcdDramRemapTarget)
+ //
+ // Use the low range for UEFI itself. The remaining memory will be mapped
+ // and added to the GCD map later.
+ //
+ ADRL (r0, mSystemMemoryEnd)
+ MOV32 (r2, FixedPcdGet32 (PcdDramRemapTarget) - 1)
+ mov r3, #0
+ strd r2, r3, [r0]
+ .endif
+
+ bx lr
+
+//UINTN
+//ArmPlatformGetCorePosition (
+// IN UINTN MpId
+// );
+// With this function: CorePos = (ClusterId * 2) + CoreId
+ASM_FUNC(ArmPlatformGetCorePosition)
+ and r1, r0, #ARM_CORE_MASK
+ and r0, r0, #ARM_CLUSTER_MASK
+ add r0, r1, r0, LSR #7
+ bx lr
+
+//UINTN
+//ArmPlatformGetPrimaryCoreMpId (
+// VOID
+// );
+ASM_FUNC(ArmPlatformGetPrimaryCoreMpId)
+ MOV32 (r0, FixedPcdGet32(PcdArmPrimaryCore))
+ bx lr
+
+//UINTN
+//ArmPlatformIsPrimaryCore (
+// IN UINTN MpId
+// );
+ASM_FUNC(ArmPlatformIsPrimaryCore)
+ MOV32 (r1, FixedPcdGet32(PcdArmPrimaryCoreMask))
+ and r0, r0, r1
+ MOV32 (r1, FixedPcdGet32(PcdArmPrimaryCore))
+ cmp r0, r1
+ moveq r0, #1
+ movne r0, #0
+ bx lr
@@ -60,6 +60,9 @@
[Sources.AArch64]
AArch64/ArmPlatformHelper.S
+[Sources.ARM]
+ ARM/ArmPlatformHelper.S
+
[FixedPcd]
gArmTokenSpaceGuid.PcdSystemMemoryBase
gArmTokenSpaceGuid.PcdSystemMemorySize