ArmPkg/ArmCpuLib: Fix GCC/XCode builds

[mirror_edk2.git] / ArmPkg / Drivers / ArmCpuLib / ArmCortexA15Lib / ArmCortexA15Helper.asm

//\r
//  Copyright (c) 2011, ARM Limited. All rights reserved.\r
//\r
//  This program and the accompanying materials\r
//  are licensed and made available under the terms and conditions of the BSD License\r
//  which accompanies this distribution.  The full text of the license may be found at\r
//  http://opensource.org/licenses/bsd-license.php\r
//\r
//  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
//  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
//\r
//\r
\r
#include <AsmMacroIoLib.h>\r
#include <Library/ArmCpuLib.h>\r
#include <Library/ArmGicLib.h>\r
#include <Library/PcdLib.h>\r
#include <Chipset/ArmV7.h>\r
\r
  INCLUDE AsmMacroIoLib.inc\r
\r
  EXPORT  ArmCpuSynchronizeWait\r
  IMPORT  CArmCpuSynchronizeWait\r
  // Dirty hack to get the Fixed value of GicDistributorBase\r
  IMPORT  _gPcd_FixedAtBuild_PcdGicDistributorBase\r
\r
  PRESERVE8\r
  AREA    ArmCortexA15Helper, CODE, READONLY\r
\r
// VOID\r
// ArmCpuSynchronizeWait (\r
//   IN ARM_CPU_SYNCHRONIZE_EVENT   Event\r
//   );\r
ArmCpuSynchronizeWait\r
  cmp   r0, #ARM_CPU_EVENT_BOOT_MEM_INIT\r
  // The SCU enabled is the event to tell us the Init Boot Memory is initialized\r
  beq   ArmWaitGicDistributorEnabled\r
  // Case when the stack has been set up\r
  push	{r1,lr}\r
  LoadConstantToReg (CArmCpuSynchronizeWait, r1)\r
  blx   r1\r
  pop	{r1,lr}\r
  bx	lr\r
\r
\r
// IN  None\r
ArmWaitGicDistributorEnabled\r
  LoadConstantToReg (_gPcd_FixedAtBuild_PcdGicDistributorBase, r0)\r
  ldr   r0, [r0]\r
_WaitGicDistributor\r
  ldr   r1, [r0, #ARM_GIC_ICDDCR]\r
  cmp   r1, #1\r
  bne   _WaitGicDistributor\r
  bx    lr\r
\r
  END\r