diff options
Diffstat (limited to 'src/vendorcode/amd/agesa/f14/Proc/CPU/Family/0x14/F14C6State.c')
| -rw-r--r-- | src/vendorcode/amd/agesa/f14/Proc/CPU/Family/0x14/F14C6State.c | 238 |
1 files changed, 238 insertions, 0 deletions
diff --git a/src/vendorcode/amd/agesa/f14/Proc/CPU/Family/0x14/F14C6State.c b/src/vendorcode/amd/agesa/f14/Proc/CPU/Family/0x14/F14C6State.c new file mode 100644 index 0000000000..48823ec080 --- /dev/null +++ b/src/vendorcode/amd/agesa/f14/Proc/CPU/Family/0x14/F14C6State.c @@ -0,0 +1,238 @@ +/* $NoKeywords:$ */ +/** + * @file + * + * AMD Family_14 C6 C-state feature support functions. + * + * Provides the functions necessary to initialize the C6 feature. + * + * @xrefitem bom "File Content Label" "Release Content" + * @e project: AGESA + * @e sub-project: CPU/F14 + * @e \$Revision: 37004 $ @e \$Date: 2010-08-28 02:23:00 +0800 (Sat, 28 Aug 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 "amdlib.h" +#include "Ids.h" +#include "cpuRegisters.h" +#include "cpuEarlyInit.h" +#include "cpuFeatures.h" +#include "cpuC6State.h" +#include "cpuF14PowerMgmt.h" +#include "OptionFamily14hEarlySample.h" +#include "Filecode.h" +#define FILECODE PROC_CPU_FAMILY_0X14_F14C6STATE_FILECODE + +/*---------------------------------------------------------------------------------------- + * D E F I N I T I O N S A N D M A C R O S + *---------------------------------------------------------------------------------------- + */ +extern F14_ES_C6_SUPPORT F14EarlySampleC6Support; + +/*---------------------------------------------------------------------------------------- + * 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 + *---------------------------------------------------------------------------------------- + */ + + +/*---------------------------------------------------------------------------------------*/ +/** + * Is C6 supported on this CPU + * + * @param[in] C6Services Pointer to this CPU's C6 family services. + * @param[in] Socket This core's zero-based socket number. + * @param[in] StdHeader Config Handle for library, services. + * + * @retval TRUE C6 state is supported. + * @retval FALSE C6 state is not supported. + * + */ +BOOLEAN +STATIC +F14IsC6Supported ( + IN C6_FAMILY_SERVICES *C6Services, + IN UINT32 Socket, + IN AMD_CONFIG_PARAMS *StdHeader + ) +{ + UINT32 PciRegister; + BOOLEAN IsEnabled; + PCI_ADDR PciAddress; + + IsEnabled = TRUE; + + PciAddress.AddressValue = CPU_STATE_PM_CTRL1_PCI_ADDR; + LibAmdPciRead (AccessWidth32, PciAddress, &PciRegister, StdHeader); + if ((((CPU_STATE_PM_CTRL1_REGISTER *) &PciRegister)->CoreC6Cap == 0) && + (((CPU_STATE_PM_CTRL1_REGISTER *) &PciRegister)->PkgC6Cap == 0)) { + IsEnabled = FALSE; + } + + F14EarlySampleC6Support.F14IsC6SupportedHook (&IsEnabled, StdHeader); + + return IsEnabled; +} + +/*---------------------------------------------------------------------------------------*/ +/** + * Enable C6 on a family 14h CPU. + * + * @param[in] C6Services Pointer to this CPU's C6 family services. + * @param[in] EntryPoint Timepoint designator. + * @param[in] PlatformConfig Contains the runtime modifiable feature input data. + * @param[in] StdHeader Config Handle for library, services. + * + * @return AGESA_SUCCESS Always succeeds. + * + */ +AGESA_STATUS +STATIC +F14InitializeC6 ( + IN C6_FAMILY_SERVICES *C6Services, + IN UINT64 EntryPoint, + IN PLATFORM_CONFIGURATION *PlatformConfig, + IN AMD_CONFIG_PARAMS *StdHeader + ) +{ + UINT32 i; + UINT32 MaxEnabledPstate; + UINT32 PciRegister; + UINT64 MsrRegister; + PCI_ADDR PciAddress; + + for (i = MSR_PSTATE_7; i > MSR_PSTATE_0; i--) { + LibAmdMsrRead (i, &MsrRegister, StdHeader); + if (((PSTATE_MSR *) &MsrRegister)->PsEnable == 1) { + break; + } + } + MaxEnabledPstate = i - MSR_PSTATE_0; + + if ((EntryPoint & CPU_FEAT_AFTER_PM_INIT) != 0) { + // Program D18F4x1AC[CoreC6Dis] to 0. + // Program D18F4x1AC[PkgC6Dis] to 0. + PciAddress.AddressValue = CPU_STATE_PM_CTRL1_PCI_ADDR; + LibAmdPciRead (AccessWidth32, PciAddress, &PciRegister, StdHeader); + ((CPU_STATE_PM_CTRL1_REGISTER *) &PciRegister)->CoreC6Dis = 0; + ((CPU_STATE_PM_CTRL1_REGISTER *) &PciRegister)->PkgC6Dis = 0; + LibAmdPciWrite (AccessWidth32, PciAddress, &PciRegister, StdHeader); + + F14EarlySampleC6Support.F14InitializeC6 (StdHeader); + + } else { + // Ensure D18F2x118[C6DramLock] and D18F4x12C[C6Base] are programmed. + PciAddress.AddressValue = MEM_CFG_LOW_PCI_ADDR; + LibAmdPciRead (AccessWidth32, PciAddress, &PciRegister, StdHeader); + ASSERT (((MEM_CFG_LOW_REGISTER *) &PciRegister)->C6DramLock == 1); + + PciAddress.AddressValue = C6_BASE_PCI_ADDR; + LibAmdPciRead (AccessWidth32, PciAddress, &PciRegister, StdHeader); + ASSERT (((C6_BASE_REGISTER *) &PciRegister)->C6Base != 0); + + // If PC6 is supported, program D18F4x1AC[PstateIdCoreOffExit] to + // the index of lowest-performance Pstate with MSRC001_00[6B:64] + // [PstateEn] == 1 on core 0. + PciAddress.AddressValue = CPU_STATE_PM_CTRL1_PCI_ADDR; + LibAmdPciRead (AccessWidth32, PciAddress, &PciRegister, StdHeader); + if (((CPU_STATE_PM_CTRL1_REGISTER *) &PciRegister)->PkgC6Cap == 1) { + ((CPU_STATE_PM_CTRL1_REGISTER *) &PciRegister)->PstateIdCoreOffExit = MaxEnabledPstate; + LibAmdPciWrite (AccessWidth32, PciAddress, &PciRegister, StdHeader); + } + + // Program D18F4x118 to 0000_0101h. + PciAddress.AddressValue = CSTATE_CTRL1_PCI_ADDR; + PciRegister = 0x00000101; + LibAmdPciWrite (AccessWidth32, PciAddress, &PciRegister, StdHeader); + } + + return AGESA_SUCCESS; +} + +/*---------------------------------------------------------------------------------------*/ +/** + * Reload microcode patch for a family 14h CPU after memory is initialized. + * + * @param[in] StdHeader Config Handle for library, services. + * + */ +VOID +STATIC +F14ReloadMicrocodePatchAfterMemInit ( + IN AMD_CONFIG_PARAMS *StdHeader + ) +{ + UINT64 MsrValue; + + // To load a microcode patch while using the cache as general storage, + // the following steps are followed: + // 1. Program MSRC001_102B[L2AllocDcFlushVictim]=1. + // 2. Load the microcode patch. + // 3. Program MSRC001_102B[L2AllocDcFlushVictim]=0. + LibAmdMsrRead (MSR_BU_CFG3, &MsrValue, StdHeader); + MsrValue = MsrValue | BIT7; + LibAmdMsrWrite (MSR_BU_CFG3, &MsrValue, StdHeader); + + // Reload microcode patches. + LoadMicrocodePatch (StdHeader); + + LibAmdMsrRead (MSR_BU_CFG3, &MsrValue, StdHeader); + MsrValue = MsrValue & ~((UINT64)BIT7); + LibAmdMsrWrite (MSR_BU_CFG3, &MsrValue, StdHeader); +} + + + +CONST C6_FAMILY_SERVICES ROMDATA F14C6Support = +{ + 0, + F14IsC6Supported, + F14InitializeC6, + F14ReloadMicrocodePatchAfterMemInit +}; |