diff options
Diffstat (limited to 'src/vendorcode/amd/agesa/f14/Proc/CPU/cpuWarmReset.c')
| -rw-r--r-- | src/vendorcode/amd/agesa/f14/Proc/CPU/cpuWarmReset.c | 237 |
1 files changed, 237 insertions, 0 deletions
diff --git a/src/vendorcode/amd/agesa/f14/Proc/CPU/cpuWarmReset.c b/src/vendorcode/amd/agesa/f14/Proc/CPU/cpuWarmReset.c new file mode 100644 index 0000000000..bfed40aaa8 --- /dev/null +++ b/src/vendorcode/amd/agesa/f14/Proc/CPU/cpuWarmReset.c @@ -0,0 +1,237 @@ +/* $NoKeywords:$ */ +/** + * @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: 35136 $ @e \$Date: 2010-07-16 11:29:48 +0800 (Fri, 16 Jul 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 "amdlib.h" +#include "Filecode.h" +CODE_GROUP (G1_PEICC) +RDATA_GROUP (G1_PEICC) + +#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); + + switch (StdHeader->Func) { + case AMD_INIT_RESET: + Request->PostStage = (UINT8) WR_STATE_RESET; + break; + case AMD_INIT_EARLY: + Request->PostStage = (UINT8) WR_STATE_EARLY; + break; + case AMD_INIT_POST: + // Fall through to default case + default: + Request->PostStage = (UINT8) WR_STATE_POST; + break; + } +} +/*---------------------------------------------------------------------------------------- + * 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; +} + +/*---------------------------------------------------------------------------------------*/ +/** + * This function will set the CPU register warm reset bits at AmdInitEarly if it is + * currently in cold boot. To request for a warm reset, set the RequestBit to TRUE + * and the StateBits to (current poststage - 1) + * + * @param[in] Data The table data value (unused in this routine) + * @param[in] StdHeader Config handle for library and services + * + *--------------------------------------------------------------------------------------- + **/ +VOID +SetWarmResetAtEarly ( + IN UINT32 Data, + IN AMD_CONFIG_PARAMS *StdHeader + ) +{ + WARM_RESET_REQUEST Request; + + if (!IsWarmReset (StdHeader)) { + GetWarmResetFlag (StdHeader, &Request); + + Request.RequestBit = TRUE; + Request.StateBits = (Request.PostStage - 1); + + SetWarmResetFlag (StdHeader, &Request); + } +} + +/*---------------------------------------------------------------------------------------- + * L O C A L F U N C T I O N S + *---------------------------------------------------------------------------------------- + */ + |