1 files changed, 149 insertions, 0 deletions
diff --git a/src/vendorcode/amd/agesa/f14/Proc/CPU/Family/0x14/cpuF14LowPowerInit.c b/src/vendorcode/amd/agesa/f14/Proc/CPU/Family/0x14/cpuF14LowPowerInit.c
new file mode 100644
index 0000000000..98fe9f1896
--- /dev/null
+++ b/src/vendorcode/amd/agesa/f14/Proc/CPU/Family/0x14/cpuF14LowPowerInit.c
@@ -0,0 +1,149 @@
+/* $NoKeywords:$ */
+/**
+ * @file
+ *
+ * AMD Family_14 Optimizations for lower power consumption
+ *
+ * Sets some registers for tablet parts at AmdInitEarly.
+ *
+ * @xrefitem bom "File Content Label" "Release Content"
+ * @e project:      AGESA
+ * @e sub-project:  CPU/Family/F14
+ * @e \$Revision: 45578 $   @e \$Date: 2011-01-18 19:20:41 -0500 (Tue, 18 Jan 2011) $
+ *
+ */
+/*
+ ******************************************************************************
+ *
+ * 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.
+ * 
+ ******************************************************************************
+ */
+
+/*----------------------------------------------------------------------------------------
+ *                             M O D U L E S    U S E D
+ *----------------------------------------------------------------------------------------
+ */
+#include "AGESA.h"
+#include "amdlib.h"
+#include "cpuFamilyTranslation.h"
+#include "cpuF14PowerMgmt.h"
+#include "cpuF14LowPowerInit.h"
+#include "Filecode.h"
+
+#define FILECODE PROC_CPU_FAMILY_0X14_CPUF14LOWPOWERINIT_FILECODE
+
+/*----------------------------------------------------------------------------------------
+ *                   D E F I N I T I O N S    A N D    M A C R O S
+ *----------------------------------------------------------------------------------------
+ */
+
+/*----------------------------------------------------------------------------------------
+ *                  T Y P E D E F S     A N D     S T R U C T U R E S
+ *----------------------------------------------------------------------------------------
+ */
+
+/*----------------------------------------------------------------------------------------
+ *           P R O T O T Y P E S     O F     L O C A L     F U N C T I O N S
+ *----------------------------------------------------------------------------------------
+ */
+
+/*----------------------------------------------------------------------------------------
+ *                          E X P O R T E D    F U N C T I O N S
+ *----------------------------------------------------------------------------------------
+ */
+
+/*---------------------------------------------------------------------------------------*/
+/**
+ * Family 14h model 0 - 0xF core 0 entry point for programming registers for lower
+ * power consumption.
+ *
+ * Set up D18F6x94[CpuPstateThrEn, CpuPstateThr], and D18F4x134[IntRateCC6DecrRate
+ * according to the BKDG.
+ *
+ * @param[in]  FamilySpecificServices  The current Family Specific Services.
+ * @param[in]  CpuEarlyParams          Service parameters
+ * @param[in]  StdHeader               Config handle for library and services.
+ *
+ */
+VOID
+F14OptimizeForLowPowerInit (
+  IN       CPU_SPECIFIC_SERVICES *FamilySpecificServices,
+  IN       AMD_CPU_EARLY_PARAMS  *CpuEarlyParams,
+  IN       AMD_CONFIG_PARAMS     *StdHeader
+  )
+{
+  UINT8                 NumBoostStates;
+  UINT32                LocalPciRegister;
+  BOOLEAN               OptimizeForLowPower;
+  BOOLEAN               IsRevC;
+  PCI_ADDR              PciAddress;
+  CPU_LOGICAL_ID        CpuFamilyRevision;
+
+  PciAddress.AddressValue = PRODUCT_INFO_PCI_ADDR;
+  LibAmdPciRead (AccessWidth32, PciAddress, &LocalPciRegister, StdHeader);
+
+  if ((((PRODUCT_INFO_REGISTER *) &LocalPciRegister)->LowPowerDefault == 1) &&
+      (CpuEarlyParams->PlatformConfig.PlatformProfile.PlatformPowerPolicy == BatteryLife)) {
+    OptimizeForLowPower = TRUE;
+  } else {
+    OptimizeForLowPower = FALSE;
+  }
+
+  // Get F4x15C [4:2] NumBoostStates
+  // Get IsRevC
+  NumBoostStates = 0;
+  IsRevC = FALSE;
+  GetLogicalIdOfCurrentCore (&CpuFamilyRevision, StdHeader);
+  if ((CpuFamilyRevision.Revision & AMD_F14_ON_Cx) != 0) {
+    IsRevC = TRUE;
+    PciAddress.AddressValue = CPB_CTRL_PCI_ADDR;
+    LibAmdPciRead (AccessWidth32, PciAddress, &LocalPciRegister, StdHeader);
+    NumBoostStates = (UINT8) ((CPB_CTRL_REGISTER *) &LocalPciRegister)->NumBoostStates;
+  }
+
+  // F6x94[2:0] CpuPstateThr
+  PciAddress.AddressValue = NB_PSTATE_CFG_HIGH_PCI_ADDR;
+  LibAmdPciRead (AccessWidth32, PciAddress, &LocalPciRegister, StdHeader);
+  if (OptimizeForLowPower) {
+    ((NB_PSTATE_CFG_HIGH_REGISTER *) &LocalPciRegister)->CpuPstateThr = 0;
+  } else {
+    if (NumBoostStates == 0) {
+      ((NB_PSTATE_CFG_HIGH_REGISTER *) &LocalPciRegister)->CpuPstateThr = 1;
+    } else {
+      ((NB_PSTATE_CFG_HIGH_REGISTER *) &LocalPciRegister)->CpuPstateThr = 2;
+    }
+  }
+  // F6x94[3] CpuPstateThrEn = 1
+  ((NB_PSTATE_CFG_HIGH_REGISTER *) &LocalPciRegister)->CpuPstateThrEn = 1;
+  LibAmdPciWrite (AccessWidth32, PciAddress, &LocalPciRegister, StdHeader);
+
+  // F4x134[31:27] IntRateCC6DecrRate
+  PciAddress.AddressValue = CSTATE_MON_CTRL3_PCI_ADDR;
+  LibAmdPciRead (AccessWidth32, PciAddress, &LocalPciRegister, StdHeader);
+  ((CSTATE_MON_CTRL3_REGISTER *) &LocalPciRegister)->IntRateCC6DecrRate = (OptimizeForLowPower || IsRevC) ? 0x18 : 0x8;
+  LibAmdPciWrite (AccessWidth32, PciAddress, &LocalPciRegister, StdHeader);
+}