ArmPlatformPkg/ArmPlatformLib: Added support for ArmPlatformIsPrimaryCore()

[mirror_edk2.git] / ArmPlatformPkg / ArmRealViewEbPkg / Library / ArmRealViewEbLibRTSM / ArmRealViewEbHelper.S

diff --git a/ArmPlatformPkg/ArmRealViewEbPkg/Library/ArmRealViewEbLibRTSM/ArmRealViewEbHelper.S b/ArmPlatformPkg/ArmRealViewEbPkg/Library/ArmRealViewEbLibRTSM/ArmRealViewEbHelper.S
new file mode 100644 (file)
index 0000000..847509f
--- /dev/null
+++ b/ArmPlatformPkg/ArmRealViewEbPkg/Library/ArmRealViewEbLibRTSM/ArmRealViewEbHelper.S
@@ -0,0 +1,49 @@
+//\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(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
+//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