1 files changed, 119 insertions, 0 deletions
diff --git a/ReferenceCode/Chipset/SystemAgent/MemoryInit/Pei/MrcOemSmbus.h b/ReferenceCode/Chipset/SystemAgent/MemoryInit/Pei/MrcOemSmbus.h
new file mode 100644
index 0000000..c6569bd
--- /dev/null
+++ b/ReferenceCode/Chipset/SystemAgent/MemoryInit/Pei/MrcOemSmbus.h
@@ -0,0 +1,119 @@
+/** @file
+  This file contains SMBus related functions.
+
+@copyright
+  Copyright (c) 1999 - 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.
+**/
+#ifndef _MrcOemSmbus_h_
+#define _MrcOemSmbus_h_
+
+#ifndef MRC_MINIBIOS_BUILD
+#include <Tiano.h>
+#include <EdkIIGlueBaseTypes.h>
+#include <EdkIIGlueSmbusLib.h>
+#endif // MRC_MINIBIOS_BUILD
+#pragma pack (push, 1)
+#include "MrcTypes.h"
+#include "MrcApi.h"
+#include "MrcOemDebugPrint.h"
+
+#ifdef MRC_MINIBIOS_BUILD
+#include "smb.h"
+#endif // MRC_MINIBIOS_BUILD
+
+/**
+@brief
+  Perform a byte read from the specified SMBus device address.
+
+  @param[in] SmbusBaseAddress   - The SMBus base address.
+  @param[in] SmBusDeviceAddress - SMBus device address to read from.
+  @param[in] Offset             - Byte offset to read from.
+  @param[out] Value             - Location to store read value.
+
+  @retval: mrcSuccess if the read is successful, otherwise mrcFail and the read data is set to zero.
+**/
+extern
+MrcStatus
+MrcOemSmbusRead8 (
+  IN const U32  SmbusBaseAddress,
+  IN const U8   SmBusDeviceAddress,
+  IN const U8   Offset,
+  OUT U8 *const Value
+  );
+
+/**
+@brief
+  Perform a byte write to the specified SMBus device address.
+
+  @param[in] SmbusBaseAddress   - The SMBus base address.
+  @param[in] SmBusDeviceAddress - SMBus device address to write to.
+  @param[in] Offset             - Byte offset to write to.
+  @param[in] Value              - The value to write.
+
+  @retval: mrcSuccess if the write is successful, otherwise mrcFail.
+**/
+extern
+MrcStatus
+MrcOemSmbusWrite8 (
+  IN const U32  SmbusBaseAddress,
+  IN const U8   SmBusDeviceAddress,
+  IN const U8   Offset,
+  IN U8         Value
+  );
+
+/**
+@brief
+  Perform a word read from the specified SMBus device address.
+
+  @param[in] SmbusBaseAddress   - The SMBus base address.
+  @param[in] SmBusDeviceAddress - SMBus device address to read from.
+  @param[in] Offset             - Offset to read from.
+  @param[out] Value             - Location to store read value.
+
+  @retval:  mrcSuccess if the read is successful, otherwise mrcFail and the read data is set to zero.
+**/
+extern
+MrcStatus
+MrcOemSmbusRead16 (
+  IN const U32   SmbusBaseAddress,
+  IN const U8    SmBusDeviceAddress,
+  IN const U8    Offset,
+  OUT U16 *const Value
+  );
+
+/**
+@brief
+  Perform a word write to the specified SMBus device address.
+
+  @param[in] SmbusBaseAddress   - The SMBus base address.
+  @param[in] SmBusDeviceAddress - SMBus device address to write to.
+  @param[in] Offset             - Offset to write to.
+  @param[in] Value              - The value to write.
+
+  @retval:  mrcSuccess if the write is successful, otherwise mrcFail.
+**/
+extern
+MrcStatus
+MrcOemSmbusWrite16 (
+  IN const U32  SmbusBaseAddress,
+  IN const U8   SmBusDeviceAddress,
+  IN const U8   Offset,
+  IN U16        Value
+  );
+
+#pragma pack(pop)
+#endif // _MrcOemSmbus_h_