1 files changed, 202 insertions, 0 deletions
diff --git a/Silicon/BroxtonSoC/BroxtonSiPkg/Txe/Library/Private/PeiDxeHeciInitLib/HeciHpet.c b/Silicon/BroxtonSoC/BroxtonSiPkg/Txe/Library/Private/PeiDxeHeciInitLib/HeciHpet.c
new file mode 100644
index 0000000000..85847a4e54
--- /dev/null
+++ b/Silicon/BroxtonSoC/BroxtonSiPkg/Txe/Library/Private/PeiDxeHeciInitLib/HeciHpet.c
@@ -0,0 +1,202 @@
+/** @file
+  Definitions for HECI driver.
+
+  Copyright (c) 2012 - 2016, 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 "HeciHpet.h"
+
+//
+// Extern for shared HECI data and protocols
+//
+volatile UINT32       mSaveHpetConfigReg;
+
+/**
+  Enable Hpet function.
+
+  @param[in]  None
+
+  @retval     UINT32            Return the High Precision Event Timer base address
+
+**/
+volatile
+UINT32 *
+EnableHpet (
+  VOID
+  )
+{
+  volatile UINT32         *HpetTimer;
+
+  HpetTimer = (VOID *) (UINTN) (HPET_BASE_ADDRESS);
+
+  //
+  // Start the timer so it is up and running
+  //
+  HpetTimer[HPET_GEN_CONFIG_LOW] = HPET_START;
+
+  DEBUG ((EFI_D_INFO, "EnableHpet %x %x\n\n ", HPET_GEN_CONFIG_LOW, HpetTimer));
+  return HpetTimer;
+
+}
+
+
+/**
+  Store the value of High Performance Timer
+
+  @param[in]  None
+
+  @retval     None
+
+**/
+VOID
+SaveHpet (
+  VOID
+  )
+{
+}
+
+/**
+  Restore the value of High Performance Timer
+
+  @param[in]  None
+
+  @retval    None
+
+**/
+VOID
+RestoreHpet (
+  VOID
+  )
+{
+}
+
+/**
+  Used for calculating timeouts
+
+  @param[in]  Start   Snapshot of the HPET timer
+  @param[in]  End     Calculated time when timeout period will be done
+  @param[in]  Time    Timeout period in microseconds
+
+  @retval  None
+
+**/
+volatile
+UINT32 *
+StartTimer (
+  OUT UINT32 *Start,
+  OUT UINT32 *End,
+  IN  UINT32 Time
+  )
+{
+  UINT32          Ticks;
+  volatile UINT32 *HpetTimer;
+
+  //
+  // Make sure that HPET is enabled and running
+  //
+  HpetTimer = EnableHpet ();
+
+  //
+  // Read current timer value into start time from HPET
+  //
+  *Start = HpetTimer[HPET_MAIN_COUNTER_LOW];
+
+  //
+  // Convert microseconds into 70ns timer ticks
+  //
+  Ticks = Time * HPET_TICKS_PER_MICRO;
+
+  //
+  // Compute end time
+  //
+  *End = *Start + Ticks;
+
+  return HpetTimer;
+}
+
+
+/**
+  Used to determine if a timeout has occured.
+
+  @param[in]  Start   Snapshot of the HPET timer when the timeout period started.
+  @param[in]  End     Calculated time when timeout period will be done.
+
+  @retval     EFI_STATUS
+
+**/
+EFI_STATUS
+Timeout (
+  IN  UINT32                      Start,
+  IN  UINT32                      End,
+  IN  volatile UINT32             *HpetTimer
+  )
+{
+  UINT32  Current;
+
+  //
+  // Read HPET and assign the value as the current time.
+  //
+  Current = HpetTimer[HPET_MAIN_COUNTER_LOW];
+
+  //
+  // Test basic case (no overflow)
+  //
+  if ((Start < End) && (End <= Current)) {
+    return EFI_TIMEOUT;
+  }
+
+  //
+  // Test basic start/end conditions with overflowed timer
+  //
+  if ((Start < End) && (Current < Start)) {
+    return EFI_TIMEOUT;
+  }
+
+  //
+  // Test for overflowed start/end condition
+  //
+  if ((Start > End) && ((Current < Start) && (Current > End))) {
+    return EFI_TIMEOUT;
+  }
+
+  //
+  // Catch corner case of broken arguments
+  //
+  if (Start == End) {
+    return EFI_TIMEOUT;
+  }
+
+  DEBUG ((EFI_D_INFO, "crnt %X start %X end %X\n", Current, Start, End));
+
+  //
+  // Else, we have not yet timed out
+  //
+  return EFI_SUCCESS;
+}
+
+
+/**
+  Delay for at least the request number of microseconds
+
+  @param[in]  delayTime    Number of microseconds to delay.
+
+  @retval     None
+
+**/
+VOID
+IoDelay (
+  UINT32 delayTime
+  )
+{
+  MicroSecondDelay(delayTime);
+}
+