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diff --git a/src/vendorcode/amd/cimx/sb900/PmioLib.c b/src/vendorcode/amd/cimx/sb900/PmioLib.c
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+++ b/src/vendorcode/amd/cimx/sb900/PmioLib.c
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+/**
+ * @file
+ *
+ * Southbridge PMIO access common routine
+ *
+ */
+/*;********************************************************************************
+;
+; Copyright (c) 2011, Advanced Micro Devices, Inc.
+; All rights reserved.
+;
+; Redistribution and use in source and binary forms, with or without
+; modification, are permitted provided that the following conditions are met:
+; * Redistributions of source code must retain the above copyright
+; notice, this list of conditions and the following disclaimer.
+; * Redistributions in binary form must reproduce the above copyright
+; notice, this list of conditions and the following disclaimer in the
+; documentation and/or other materials provided with the distribution.
+; * Neither the name of Advanced Micro Devices, Inc. nor the names of
+; its contributors may be used to endorse or promote products derived
+; from this software without specific prior written permission.
+;
+; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+; ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+; WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+; DISCLAIMED. IN NO EVENT SHALL ADVANCED MICRO DEVICES, INC. BE LIABLE FOR ANY
+; DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+; (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+; ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+; (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+; SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+;
+;*********************************************************************************/
+
+#include "SbPlatform.h"
+#include "cbtypes.h"
+
+/*----------------------------------------------------------------------------------------*/
+/**
+ * Read PMIO
+ *
+ *
+ *
+ * @param[in] Address - PMIO Offset value
+ * @param[in] OpFlag - Access sizes
+ * @param[in] Value - Read Data Buffer
+ *
+ */
+VOID
+ReadPMIO (
+ IN UINT8 Address,
+ IN UINT8 OpFlag,
+ IN VOID* Value
+ )
+{
+ UINT8 i;
+ OpFlag = OpFlag & 0x7f;
+
+ if ( OpFlag == 0x02 ) {
+ OpFlag = 0x03;
+ }
+ for ( i = 0; i <= OpFlag; i++ ) {
+ WriteIO (0xCD6, AccWidthUint8, &Address); // SB_IOMAP_REGCD6
+ Address++;
+ ReadIO (0xCD7, AccWidthUint8, (UINT8 *)Value + i); // SB_IOMAP_REGCD7
+ }
+}
+
+/*----------------------------------------------------------------------------------------*/
+/**
+ * Write PMIO
+ *
+ *
+ *
+ * @param[in] Address - PMIO Offset value
+ * @param[in] OpFlag - Access sizes
+ * @param[in] Value - Write Data Buffer
+ *
+ */
+VOID
+WritePMIO (
+ IN UINT8 Address,
+ IN UINT8 OpFlag,
+ IN VOID* Value
+ )
+{
+ UINT8 i;
+ OpFlag = OpFlag & 0x7f;
+
+ if ( OpFlag == 0x02 ) {
+ OpFlag = 0x03;
+ }
+ for ( i = 0; i <= OpFlag; i++ ) {
+ WriteIO (0xCD6, AccWidthUint8, &Address); // SB_IOMAP_REGCD6
+ Address++;
+ WriteIO (0xCD7, AccWidthUint8, (UINT8 *)Value + i); // SB_IOMAP_REGCD7
+ }
+}
+
+/*----------------------------------------------------------------------------------------*/
+/**
+ * RWPMIO - Read/Write PMIO
+ *
+ *
+ *
+ * @param[in] Address - PMIO Offset value
+ * @param[in] OpFlag - Access sizes
+ * @param[in] AndMask - Data And Mask 32 bits
+ * @param[in] OrMask - Data OR Mask 32 bits
+ *
+ */
+VOID
+RWPMIO (
+ IN UINT8 Address,
+ IN UINT8 OpFlag,
+ IN UINT32 AndMask,
+ IN UINT32 OrMask
+ )
+{
+ UINT32 Result;
+ OpFlag = OpFlag & 0x7f;
+ ReadPMIO (Address, OpFlag, &Result);
+ Result = (Result & AndMask) | OrMask;
+ WritePMIO (Address, OpFlag, &Result);
+}