Upload BSD-licensed Vlv2TbltDevicePkg and Vlv2DeviceRefCodePkg to

https://svn.code.sf.net/p/edk2/code/trunk/edk2/, which are for MinnowBoard MAX open source project. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: David Wei <david.wei@intel.com> Reviewed-by: Mike Wu <mike.wu@intel.com> Reviewed-by: Hot Tian <hot.tian@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16599 6f19259b-4bc3-4df7-8a09-765794883524
2015-01-12 09:37:20 +00:00
parent 6f785cfcc3
commit 3cbfba02fe
518 changed files with 118538 additions and 0 deletions
--- a/Vlv2TbltDevicePkg/Library/StallSmmLib/StallSmm.c
+++ b/Vlv2TbltDevicePkg/Library/StallSmmLib/StallSmm.c
@@ -0,0 +1,94 @@
+/*++
+
+Copyright (c)  1999  - 2014, Intel Corporation. All rights reserved
+                                                                                   
+
+  This program and the accompanying materials are licensed and made available under
+
+  the terms and conditions of the BSD License that 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.    
+
+                                                                                   
+
+
+
+Module Name:
+
+  SmmIo.c
+
+Abstract:
+
+  SMM I/O access utility implementation file, for Ia32
+
+--*/
+
+//
+// Include files
+//
+#include "Library/StallSmmLib.h"
+#include "Pi/PiSmmCis.h"
+#include "PiDxe.h"
+#include <Library/IoLib.h>
+#include <Library/PcdLib.h>
+#include "PchAccess.h"
+
+/**
+  Delay for at least the request number of microseconds.
+  Timer used is ACPI time counter, which has 1us granularity.
+
+  @param Microseconds  Number of microseconds to delay.
+
+  @retval None
+
+**/
+VOID
+SmmStall (
+  IN  UINTN   Microseconds
+  )
+{
+  UINTN   Ticks;
+  UINTN   Counts;
+  UINTN   CurrentTick;
+  UINTN   OriginalTick;
+  UINTN   RemainingTick;
+  UINT16  AcpiBaseAddr;
+
+  if (Microseconds == 0) {
+    return;
+  }
+
+  AcpiBaseAddr = PchLpcPciCfg16 (R_PCH_LPC_ACPI_BASE) & B_PCH_LPC_ACPI_BASE_BAR;
+
+  OriginalTick = IoRead32 (AcpiBaseAddr + R_PCH_ACPI_PM1_TMR);
+  CurrentTick = OriginalTick;
+
+  //
+  // The timer frequency is 3.579545 MHz, so 1 ms corresponds 3.58 clocks
+  //
+  Ticks = Microseconds * 358 / 100 + OriginalTick + 1;
+
+  //
+  // The loops needed by timer overflow
+  //
+  Counts = Ticks / V_PCH_ACPI_PM1_TMR_MAX_VAL;
+
+  //
+  // Remaining clocks within one loop
+  //
+  RemainingTick = Ticks % V_PCH_ACPI_PM1_TMR_MAX_VAL;
+
+  //
+  // not intend to use TMROF_STS bit of register PM1_STS, because this adds extra
+  // one I/O operation, and maybe generate SMI
+  //
+  while ((Counts != 0) || (RemainingTick > CurrentTick)) {
+    CurrentTick = IoRead32 (AcpiBaseAddr + R_PCH_ACPI_PM1_TMR);