1 files changed, 166 insertions, 0 deletions
diff --git a/ReferenceCode/Chipset/LynxPoint/Wdt/Common/WdtCommon.h b/ReferenceCode/Chipset/LynxPoint/Wdt/Common/WdtCommon.h
new file mode 100644
index 0000000..dfc6959
--- /dev/null
+++ b/ReferenceCode/Chipset/LynxPoint/Wdt/Common/WdtCommon.h
@@ -0,0 +1,166 @@
+/** @file
+  Library that contains common parts of WdtPei and WdtDxe. Not a standalone module.
+
+@copyright
+  Copyright (c) 2010 - 2012 Intel Corporation. All rights reserved
+  This software and associated documentation (if any) is furnished
+  under a license and may only be used or copied in accordance
+  with the terms of the license. Except as permitted by such
+  license, no part of this software or documentation may be
+  reproduced, stored in a retrieval system, or transmitted in any
+  form or by any means without the express written consent of
+  Intel Corporation.
+
+  This file contains an 'Intel Peripheral Driver' and uniquely
+  identified as "Intel Reference Module" and is
+  licensed for Intel CPUs and chipsets under the terms of your
+  license agreement with Intel or your vendor.  This file may
+  be modified by the user, subject to additional terms of the
+  license agreement
+**/
+#include "PchAccess.h"
+
+extern UINT8    mAllowExpectedReset;
+extern EFI_GUID mWdtHobGuid;
+
+#if !defined(EDK_RELEASE_VERSION) || (EDK_RELEASE_VERSION < 0x00020000)
+#define WDT_HOB_GUID \
+  { \
+    0x65675786, 0xacca, 0x4b11, 0x8a, 0xb7, 0xf8, 0x43, 0xaa, 0x2a, 0x8b, 0xea \
+  }
+#else
+#define WDT_HOB_GUID \
+  { \
+    0x65675786, 0xacca, 0x4b11, \
+    { \
+      0x8a, 0xb7, 0xf8, 0x43, 0xaa, 0x2a, 0x8b, 0xea \
+    } \
+  }
+#endif
+//
+// HOB definitions duplicated from HOB.h which couldn't be included directly,
+// because it requires either EdkIIGluePeim.h or EdkIIGlueDxe.h,
+// and WdtCommon must not include any of those.
+//
+#ifndef _PEI_HOB_H_
+#ifndef __HOB__H__
+typedef struct _EFI_HOB_GENERIC_HEADER {
+  UINT16  HobType;
+  UINT16  HobLength;
+  UINT32  Reserved;
+} EFI_HOB_GENERIC_HEADER;
+
+typedef struct _EFI_HOB_GUID_TYPE {
+  EFI_HOB_GENERIC_HEADER  Header;
+  EFI_GUID                Name;
+} EFI_HOB_GUID_TYPE;
+#endif
+#endif
+
+typedef struct {
+  EFI_HOB_GUID_TYPE Header;
+  UINT16            TimeoutValue;
+  UINT8             Active;
+} WDT_HOB;
+
+/**
+  Reads LPC bridge to get Watchdog Timer address
+
+  @param[in] none
+
+  @retval UINT32                  Watchdog's address
+**/
+UINT32
+WdtGetAddress (
+  VOID
+  );
+
+/**
+  Reloads WDT with new timeout value and starts it. Also sets Unexpected Reset bit, which
+  causes the next reset to be treated as watchdog expiration - unless AllowKnownReset()
+  function was called too.
+
+  @param[in] TimeoutValue         Time in seconds before WDT times out. Supported range = 1 - 1024.
+
+  @retval EFI_SUCCESS             if everything's OK
+  @retval EFI_INVALID_PARAMETER   if TimeoutValue parameter is wrong
+**/
+EFI_STATUS
+EFIAPI
+WdtReloadAndStart (
+  IN  UINT32  TimeoutValue
+  );
+
+/**
+  Disables WDT timer.
+
+  @param[in] None
+
+  @retval None
+**/
+VOID
+EFIAPI
+WdtDisable (
+  VOID
+  );
+
+/**
+  Returns WDT failure status.
+
+  @param[in] None
+
+  @retval V_PCH_OC_WDT_CTL_STATUS_FAILURE   If there was WDT expiration or unexpected reset
+  @retval V_PCH_OC_WDT_CTL_STATUS_OK        Otherwise
+**/
+UINT8
+EFIAPI
+WdtCheckStatus (
+  VOID
+  );
+
+/**
+  Normally, each reboot performed while watchdog runs is considered a failure.
+  This function allows platform to perform expected reboots with WDT running,
+  without being interpreted as failures.
+  In DXE phase, it is enough to call this function any time before reset.
+  In PEI phase, between calling this function and performing reset, ReloadAndStart()
+  must not be called.
+
+  @param[in] None
+
+  @retval None
+**/
+VOID
+EFIAPI
+WdtAllowKnownReset (
+  VOID
+  );
+
+/**
+  Returns information if WDT coverage for the duration of BIOS execution
+  was requested by an OS application
+
+  @param[in] None
+
+  @retval TRUE                    if WDT was requested
+  @retval FALSE                   if WDT was not requested
+**/
+UINT8
+EFIAPI
+IsWdtRequired (
+  VOID
+  );
+
+/**
+  Returns WDT enabled/disabled status.
+
+  @param[in] None
+
+  @retval TRUE                    if WDT is enabled
+  @retval FALSE                   if WDT is disabled
+**/
+UINT8
+EFIAPI
+IsWdtEnabled (
+  VOID
+  );