--- /dev/null
+/**
+ * @file
+ *
+ * AMD CPU Warm Reset Implementation.
+ *
+ * Implement Warm Reset Interface.
+ *
+ * @xrefitem bom "File Content Label" "Release Content"
+ * @e project: AGESA
+ * @e sub-project: CPU
+ * @e \$Revision: 44323 $ @e \$Date: 2010-12-22 01:24:58 -0700 (Wed, 22 Dec 2010) $
+ *
+ */
+/*
+ ******************************************************************************
+ *
+ * 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 "cpuRegisters.h"
+#include "cpuServices.h"
+#include "cpuFamilyTranslation.h"
+#include "Filecode.h"
+#define FILECODE PROC_CPU_CPUWARMRESET_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
+ *----------------------------------------------------------------------------------------
+ */
+
+/*---------------------------------------------------------------------------------------*/
+/**
+ * This function will set the CPU register warm reset bits.
+ *
+ * Note: This function will be called by UEFI BIOS's
+ * The UEFI wrapper code should register this function, to be called back later point
+ * in time, before the wrapper code does warm reset.
+ *
+ * @param[in] StdHeader Config handle for library and services
+ * @param[in] Request Indicate warm reset status
+ *
+ *---------------------------------------------------------------------------------------
+ **/
+VOID
+SetWarmResetFlag (
+ IN AMD_CONFIG_PARAMS *StdHeader,
+ IN WARM_RESET_REQUEST *Request
+ )
+{
+ CPU_SPECIFIC_SERVICES *FamilySpecificServices;
+ FamilySpecificServices = NULL;
+
+ GetCpuServicesOfCurrentCore (&FamilySpecificServices, StdHeader);
+ FamilySpecificServices->SetWarmResetFlag (FamilySpecificServices, StdHeader, Request);
+}
+
+/*---------------------------------------------------------------------------------------*/
+/**
+ * This function will get the CPU register warm reset bits.
+ *
+ * Note: This function will be called by UEFI BIOS's
+ * The UEFI wrapper code should register this function, to be called back later point
+ * in time, before the wrapper code does warm reset.
+ *
+ * @param[in] StdHeader Config handle for library and services
+ * @param[out] Request Indicate warm reset status
+ *
+ *---------------------------------------------------------------------------------------
+ **/
+VOID
+GetWarmResetFlag (
+ IN AMD_CONFIG_PARAMS *StdHeader,
+ OUT WARM_RESET_REQUEST *Request
+ )
+{
+ CPU_SPECIFIC_SERVICES *FamilySpecificServices;
+ FamilySpecificServices = NULL;
+
+ GetCpuServicesOfCurrentCore (&FamilySpecificServices, StdHeader);
+ FamilySpecificServices->GetWarmResetFlag (FamilySpecificServices, StdHeader, Request);
+}
+/*----------------------------------------------------------------------------------------
+ * E X P O R T E D F U N C T I O N S - (AGESA ONLY)
+ *----------------------------------------------------------------------------------------
+ */
+
+
+
+/*---------------------------------------------------------------------------------------*/
+/**
+ * Is this boot a warm reset?
+ *
+ * This function reads the CPU register warm reset bit that is preserved after a warm reset.
+ * Which in fact gets set before issuing warm reset. We just use the BSP's register always.
+ *
+ * @param[in] StdHeader Config handle for library and services
+ *
+ * @retval TRUE Warm Reset
+ * @retval FALSE Not Warm Reset
+ *
+ */
+BOOLEAN
+IsWarmReset (
+ IN AMD_CONFIG_PARAMS *StdHeader
+ )
+{
+ UINT8 PostStage;
+ WARM_RESET_REQUEST Request;
+ BOOLEAN WarmReset;
+ CPU_SPECIFIC_SERVICES *FamilySpecificServices;
+
+ FamilySpecificServices = NULL;
+
+ switch (StdHeader->Func) {
+ case AMD_INIT_RESET:
+ PostStage = WR_STATE_RESET;
+ break;
+ case AMD_INIT_EARLY:
+ PostStage = WR_STATE_EARLY;
+ break;
+ case AMD_INIT_POST:
+ default:
+ PostStage = WR_STATE_POST;
+ break;
+ }
+
+ GetCpuServicesOfCurrentCore (&FamilySpecificServices, StdHeader);
+ FamilySpecificServices->GetWarmResetFlag (FamilySpecificServices, StdHeader, &Request);
+
+ if (Request.StateBits >= PostStage) {
+ WarmReset = TRUE;
+ } else {
+ WarmReset = FALSE;
+ }
+
+ return WarmReset;
+}
+
+/*----------------------------------------------------------------------------------------
+ * L O C A L F U N C T I O N S
+ *----------------------------------------------------------------------------------------
+ */
+
projects / coreboot.git / blobdiff