ArmPlatformPkg/ArmPlatformLib: Added ArmPlatformGetPrimaryCoreMpId()

[mirror_edk2.git] / ArmPlatformPkg / Library / ArmPlatformLibNull / Arm / ArmPlatformHelper.S

//\r
//  Copyright (c) 2012, 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/ArmLib.h>\r
\r
.text \r
.align 3\r
\r
GCC_ASM_EXPORT(ArmPlatformGetCorePosition)\r
GCC_ASM_EXPORT(ArmPlatformGetPrimaryCoreMpId)\r
GCC_ASM_EXPORT(ArmPlatformIsPrimaryCore)\r
\r
GCC_ASM_IMPORT(_gPcd_FixedAtBuild_PcdArmPrimaryCore)\r
GCC_ASM_IMPORT(_gPcd_FixedAtBuild_PcdArmPrimaryCoreMask)\r
\r
//UINTN\r
//ArmPlatformGetCorePosition (\r
//  IN UINTN MpId\r
//  );\r
ASM_PFX(ArmPlatformGetCorePosition):\r
  and	r1, r0, #ARM_CORE_MASK\r
  and	r0, r0, #ARM_CLUSTER_MASK\r
  add	r0, r1, r0, LSR #7\r
  bx 	lr\r
\r
//UINTN\r
//ArmPlatformGetPrimaryCoreMpId (\r
//  VOID\r
//  );\r
ASM_PFX(ArmPlatformGetPrimaryCoreMpId):\r
  LoadConstantToReg (_gPcd_FixedAtBuild_PcdArmPrimaryCoreMask, r0)\r
  ldr   r0, [r0]\r
  bx    lr\r
\r
//UINTN\r
//ArmPlatformIsPrimaryCore (\r
//  IN UINTN MpId\r
//  );\r
ASM_PFX(ArmPlatformIsPrimaryCore):\r
  LoadConstantToReg (_gPcd_FixedAtBuild_PcdArmPrimaryCoreMask, r1)\r
  ldr   r1, [r1]\r
  and   r0, r0, r1\r
  LoadConstantToReg (_gPcd_FixedAtBuild_PcdArmPrimaryCore, r1)\r
  ldr   r1, [r1]\r
  cmp   r0, r1\r
  moveq r0, #1\r
  movne r0, #0\r
  bx    lr\r