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-rw-r--r--MdePkg/Library/BaseCpuLib/Ipf/CpuSleep.c66
1 files changed, 0 insertions, 66 deletions
diff --git a/MdePkg/Library/BaseCpuLib/Ipf/CpuSleep.c b/MdePkg/Library/BaseCpuLib/Ipf/CpuSleep.c
deleted file mode 100644
index 86d2c184772b..000000000000
--- a/MdePkg/Library/BaseCpuLib/Ipf/CpuSleep.c
+++ /dev/null
@@ -1,66 +0,0 @@
-/** @file
- Base Library CPU functions for Itanium
-
- Copyright (c) 2006 - 2009, Intel Corporation. All rights reserved.<BR>
- 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 <Library/PalLib.h>
-#include <Library/BaseLib.h>
-
-/**
- Places the CPU in a sleep state until an interrupt is received.
-
- Places the CPU in a sleep state until an interrupt is received. If interrupts
- are disabled prior to calling this function, then the CPU will be placed in a
- sleep state indefinitely.
-
-**/
-VOID
-EFIAPI
-CpuSleep (
- VOID
- )
-{
- UINT64 Tpr;
-
- //
- // It is the TPR register that controls if external interrupt would bring processor in LIGHT HALT low-power state
- // back to normal state. PAL_HALT_LIGHT does not depend on PSR setting.
- // So here if interrupts are disabled (via PSR.i), TRP.mmi needs to be set to prevent processor being interrupted by external interrupts.
- // If interrupts are enabled, then just use current TRP setting.
- //
- if (GetInterruptState ()) {
- //
- // If interrupts are enabled, then call PAL_HALT_LIGHT with the current TPR setting.
- //
- PalCall (PAL_HALT_LIGHT, 0, 0, 0);
- } else {
- //
- // If interrupts are disabled on entry, then mask all interrupts in TPR before calling PAL_HALT_LIGHT.
- //
-
- //
- // Save TPR
- //
- Tpr = AsmReadTpr();
- //
- // Set TPR.mmi to mask all external interrupts
- //
- AsmWriteTpr (BIT16 | Tpr);
-
- PalCall (PAL_HALT_LIGHT, 0, 0, 0);
-
- //
- // Restore TPR
- //
- AsmWriteTpr (Tpr);
- }
-}