--- /dev/null
+/**
+ * @file
+ *
+ * AMD Family_10 after warm reset sequence
+ *
+ * Performs the "CPU Core Minimum P-State Transition Sequence After Warm Reset"
+ * as described in the BKDG.
+ *
+ * @xrefitem bom "File Content Label" "Release Content"
+ * @e project: AGESA
+ * @e sub-project: CPU/Family/0x10
+ * @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 "amdlib.h"
+#include "cpuF10PowerMgmt.h"
+#include "cpuRegisters.h"
+#include "cpuApicUtilities.h"
+#include "cpuFamilyTranslation.h"
+#include "cpuF10Utilities.h"
+#include "cpuF10EarlyInit.h"
+#include "GeneralServices.h"
+#include "cpuServices.h"
+#include "Filecode.h"
+#define FILECODE PROC_CPU_FAMILY_0X10_CPUF10EARLYINIT_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
+ *----------------------------------------------------------------------------------------
+ */
+/// Enum for handling code branching while transitioning to the
+/// minimum P-state after a warm reset
+typedef enum {
+ EXIT_SEQUENCE, ///< Exit the sequence
+ STEP7, ///< Go to step 7
+ STEP17, ///< Go to step 17
+ STEP20 ///< Go to step 20
+} GO_TO_STEP;
+
+/*----------------------------------------------------------------------------------------
+ * 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
+ *----------------------------------------------------------------------------------------
+ */
+VOID
+STATIC
+F10PmAfterResetCore (
+ IN AMD_CONFIG_PARAMS *StdHeader
+ );
+
+VOID
+STATIC
+WaitForCpuFidAndDidToMatch (
+ IN UINT32 PstateNumber,
+ IN AMD_CONFIG_PARAMS *StdHeader
+ );
+
+/*----------------------------------------------------------------------------------------
+ * E X P O R T E D F U N C T I O N S
+ *----------------------------------------------------------------------------------------
+ */
+
+/*---------------------------------------------------------------------------------------*/
+/**
+ * Family 10h core 0 entry point for performing the necessary steps after
+ * a warm reset has occurred.
+ *
+ * The steps are as follows:
+ * 1. Modify F3xDC[PstateMaxVal] to reflect the lowest performance P-state
+ * supported, as indicated in MSRC001_00[68:64][PstateEn]
+ * 2. If MSRC001_0071[CurNbDid] = 0, set MSRC001_001F[GfxNbPstateDis]
+ * 3. If MSRC001_0071[CurPstate] != F3xDC[PstateMaxVal], go to step 20
+ * 4. If F3xDC[PstateMaxVal] = 0 or F3xDC[PstateMaxVal] != 4, go to step 7
+ * 5. If MSRC001_0061[CurPstateLimit] <= F3xDC[PstateMaxVal]-1, go to step 17
+ * 6. Exit the sequence
+ * 7. Copy the P-state register pointed to by F3xDC[PstateMaxVal] to the P-state
+ * register pointed to by F3xDC[PstateMaxVal]+1
+ * 8. Write F3xDC[PstateMaxVal]+1 to F3xDC[PstateMaxVal]
+ * 9. Write (the new) F3xDC[PstateMaxVal] to MSRC001_0062[PstateCmd]
+ * 10. Wait for MSRC001_0071[CurCpuFid/CurCpuDid] = CpuFid/CpuDid from the P-state
+ * register pointed to by (the new) F3xDC[PstateMaxVal]
+ * 11. Copy (the new) F3xDC[PstateMaxVal]-1 to MSRC001_0062[PstateCmd]
+ * 12. Wait for MSRC001_0071[CurCpuFid/CurCpuDid] = CpuFid/CpuDid from the P-state
+ * register pointed to by (the new) F3xDC[PstateMaxVal]-1
+ * 13. If MSRC001_0071[CurNbDid] = 1, set MSRC001_001F[GfxNbPstateDis]
+ * 14. If required, transition the NB COF and VID to the NbDid and NbVid from the
+ * P-state register pointed to by MSRC001_0061[CurPstateLimit] using the NB COF
+ * and VID transition sequence after a warm reset
+ * 15. Write MSRC001_00[68:64][PstateEn]=0 for the P-state pointed to by F3xDC[PstateMaxVal]
+ * 16. Write (the new) F3xDC[PstateMaxVal]-1 to F3xDC[PstateMaxVal] and exit the sequence
+ * 17. Copy F3xDC[PstateMaxVal]-1 to MSRC001_0062[PstateCmd]
+ * 18. Wait for MSRC001_0071[CurCpuFid/CurCpuDid] = CpuFid/CpuDid from the P-state
+ * register pointed to by F3xDC[PstateMaxVal]-1
+ * 19. If MSRC001_0071[CurNbDid] = 0, set MSRC001_001F[GfxNbPstateDis]
+ * 20. Copy F3xDC[PstateMaxVal] to MSRC001_0062[PstateCmd]
+ * 21. Wait for MSRC001_0071[CurCpuFid/CurCpuDid] = CpuFid/CpuDid from the P-state
+ * register pointed to by F3xDC[PstateMaxVal]
+ * 22. If MSRC001_0071[CurNbDid] = 1, set MSRC001_001F[GfxNbPstateDis]
+ * 23. Issue an LDTSTOP assertion in the IO hub and exit sequence
+ * 24. If required, transition the NB COF and VID to the NbDid and NbVid from the
+ * P-state register pointed to by F3xDC[PstateMaxVal] using the NB COF and VID
+ * transition sequence after a warm reset
+ *
+ * @param[in] FamilySpecificServices The current Family Specific Services.
+ * @param[in] CpuEarlyParamsPtr Service parameters
+ * @param[in] StdHeader Config handle for library and services.
+ *
+ */
+VOID
+F10PmAfterReset (
+ IN CPU_SPECIFIC_SERVICES *FamilySpecificServices,
+ IN AMD_CPU_EARLY_PARAMS *CpuEarlyParamsPtr,
+ IN AMD_CONFIG_PARAMS *StdHeader
+ )
+{
+ UINT32 Socket;
+ UINT32 Module;
+ UINT32 PsMaxVal;
+ UINT32 CoreNum;
+ UINT32 MsrAddr;
+ UINT32 Core;
+ UINT32 AndMask;
+ UINT32 OrMask;
+ UINT64 MsrRegister;
+ PCI_ADDR PciAddress;
+ AP_TASK TaskPtr;
+ AGESA_STATUS IgnoredSts;
+
+ IdentifyCore (StdHeader, &Socket, &Module, &Core, &IgnoredSts);
+ GetPciAddress (StdHeader, Socket, Module, &PciAddress, &IgnoredSts);
+ GetActiveCoresInCurrentSocket (&CoreNum, StdHeader);
+
+ ASSERT (Core == 0);
+
+ // Step 1 Modify F3xDC[PstateMaxVal] to reflect the lowest performance
+ // P-state supported, as indicated in MSRC001_00[68:64][PstateEn]
+ for (MsrAddr = PS_MAX_REG; MsrAddr > PS_REG_BASE; --MsrAddr) {
+ LibAmdMsrRead (MsrAddr, &MsrRegister, StdHeader);
+ if (((PSTATE_MSR *) &MsrRegister)->PsEnable == 1) {
+ break;
+ }
+ }
+ PsMaxVal = MsrAddr - PS_REG_BASE;
+ PciAddress.Address.Function = FUNC_3;
+ PciAddress.Address.Register = CPTC2_REG;
+ AndMask = 0xFFFFFFFF;
+ OrMask = 0x00000000;
+ ((CLK_PWR_TIMING_CTRL2_REGISTER *) &AndMask)->PstateMaxVal = 0;
+ ((CLK_PWR_TIMING_CTRL2_REGISTER *) &OrMask)->PstateMaxVal = PsMaxVal;
+ ModifyCurrentSocketPci (&PciAddress, AndMask, OrMask, StdHeader);
+
+ // Launch each local core to perform the remaining steps.
+ TaskPtr.FuncAddress.PfApTask = F10PmAfterResetCore;
+ TaskPtr.DataTransfer.DataSizeInDwords = 0;
+ TaskPtr.ExeFlags = WAIT_FOR_CORE;
+ ApUtilRunCodeOnAllLocalCoresAtEarly (&TaskPtr, StdHeader, CpuEarlyParamsPtr);
+}
+
+
+/*---------------------------------------------------------------------------------------
+ * L O C A L F U N C T I O N S
+ *---------------------------------------------------------------------------------------
+ */
+
+/*---------------------------------------------------------------------------------------*/
+/**
+ * Support routine for F10PmAfterReset to perform MSR initialization on all
+ * cores of a family 10h socket.
+ *
+ * This function implements steps 2 - 24 on each core.
+ *
+ * @param[in] StdHeader Config handle for library and services.
+ *
+ */
+VOID
+STATIC
+F10PmAfterResetCore (
+ IN AMD_CONFIG_PARAMS *StdHeader
+ )
+{
+ UINT32 Socket;
+ UINT32 Module;
+ UINT32 Ignored;
+ UINT32 PsMaxVal;
+ UINT32 PciRegister;
+ UINT64 MsrRegister;
+ UINT64 CurrentLimitMsr;
+ PCI_ADDR PciAddress;
+ GO_TO_STEP GoToStep;
+ AGESA_STATUS IgnoredSts;
+ CPU_LOGICAL_ID LogicalId;
+ CPU_SPECIFIC_SERVICES *FamilySpecificServices;
+
+ // Step 2 If MSR C001_0071[CurNbDid] = 0, set MSR C001_001F[GfxNbPstateDis]
+ GetLogicalIdOfCurrentCore (&LogicalId, StdHeader);
+ GetCpuServicesFromLogicalId (&LogicalId, &FamilySpecificServices, StdHeader);
+ if ((LogicalId.Revision & (AMD_F10_C3 | AMD_F10_DA_C2)) != 0) {
+ LibAmdMsrRead (MSR_COFVID_STS, &MsrRegister, StdHeader);
+ if (((COFVID_STS_MSR *) &MsrRegister)->CurNbDid == 0) {
+ LibAmdMsrRead (NB_CFG, &MsrRegister, StdHeader);
+ MsrRegister |= BIT62;
+ LibAmdMsrWrite (NB_CFG, &MsrRegister, StdHeader);
+ }
+ }
+
+ GoToStep = EXIT_SEQUENCE;
+
+ LibAmdMsrRead (MSR_PSTATE_CURRENT_LIMIT, &CurrentLimitMsr, StdHeader);
+ PsMaxVal = (UINT32) (((PSTATE_CURLIM_MSR *) &CurrentLimitMsr)->PstateMaxVal);
+
+ // Step 3 If MSRC001_0071[CurPstate] != F3xDC[PstateMaxVal], go to step 20
+ LibAmdMsrRead (MSR_COFVID_STS, &MsrRegister, StdHeader);
+ if (((COFVID_STS_MSR *) &MsrRegister)->CurPstate !=
+ ((PSTATE_CURLIM_MSR *) &CurrentLimitMsr)->PstateMaxVal) {
+ GoToStep = STEP20;
+ } else {
+ // Step 4 If F3xDC[PstateMaxVal] = 0 || F3xDC[PstateMaxVal] != 4, go to step 7
+ if ((PsMaxVal == 0) || (PsMaxVal != 4)) {
+ GoToStep = STEP7;
+ } else {
+ // Step 5 If MSRC001_0061[CurPstateLimit] <= F3xDC[PstateMaxVal]-1, go to step 17
+ if (((PSTATE_CURLIM_MSR *) &CurrentLimitMsr)->CurPstateLimit <=
+ (((PSTATE_CURLIM_MSR *) &CurrentLimitMsr)->PstateMaxVal - 1)) {
+ GoToStep = STEP17;
+ }
+ }
+ }
+ switch (GoToStep) {
+ default:
+ case EXIT_SEQUENCE:
+ // Step 6 Exit the sequence
+ break;
+ case STEP7:
+ // Step 7 Copy the P-state register pointed to by F3xDC[PstateMaxVal] to the P-state
+ // register pointed to by F3xDC[PstateMaxVal]+1
+ LibAmdMsrRead ((MSR_PSTATE_0 + PsMaxVal), &MsrRegister, StdHeader);
+ LibAmdMsrWrite ((MSR_PSTATE_0 + (PsMaxVal + 1)), &MsrRegister, StdHeader);
+
+ // Step 8 Write F3xDC[PstateMaxVal]+1 to F3xDC[PstateMaxVal]
+ IdentifyCore (StdHeader, &Socket, &Module, &Ignored, &IgnoredSts);
+ GetPciAddress (StdHeader, Socket, Module, &PciAddress, &IgnoredSts);
+ PciAddress.Address.Function = FUNC_3;
+ PciAddress.Address.Register = CPTC2_REG;
+ LibAmdPciRead (AccessWidth32, PciAddress, &PciRegister, StdHeader);
+ ((CLK_PWR_TIMING_CTRL2_REGISTER *) &PciRegister)->PstateMaxVal = PsMaxVal + 1;
+ LibAmdPciWrite (AccessWidth32, PciAddress, &PciRegister, StdHeader);
+
+ // Step 9 Write (the new) F3xDC[PstateMaxVal] to MSRC001_0062[PstateCmd]
+ FamilySpecificServices->TransitionPstate (FamilySpecificServices, (UINT8) (PsMaxVal + 1), (BOOLEAN) FALSE, StdHeader);
+
+ // Step 10 Wait for MSRC001_0071[CurCpuFid/CurCpuDid] = CpuFid/CpuDid from the P-state
+ // register pointed to by (the new) F3xDC[PstateMaxVal]
+ WaitForCpuFidAndDidToMatch ((UINT32) (PsMaxVal + 1), StdHeader);
+
+ // Step 11 Copy (the new) F3xDC[PstateMaxVal]-1 to MSRC001_0062[PstateCmd]
+ FamilySpecificServices->TransitionPstate (FamilySpecificServices, (UINT8) PsMaxVal, (BOOLEAN) FALSE, StdHeader);
+
+ // Step 12 Wait for MSRC001_0071[CurCpuFid/CurCpuDid] = CpuFid/CpuDid from the P-state
+ // register pointed to by (the new) F3xDC[PstateMaxVal]-1
+ WaitForCpuFidAndDidToMatch (PsMaxVal, StdHeader);
+
+ // Step 13 If MSRC001_0071[CurNbDid] = 1, set MSRC001_001F[GfxNbPstateDis]
+ if ((LogicalId.Revision & (AMD_F10_C3 | AMD_F10_DA_C2)) != 0) {
+ LibAmdMsrRead (MSR_COFVID_STS, &MsrRegister, StdHeader);
+ if (((COFVID_STS_MSR *) &MsrRegister)->CurNbDid == 1) {
+ LibAmdMsrRead (NB_CFG, &MsrRegister, StdHeader);
+ MsrRegister |= BIT62;
+ LibAmdMsrWrite (NB_CFG, &MsrRegister, StdHeader);
+ }
+ }
+
+ // Step 14 If required, transition the NB COF and VID to the NbDid and NbVid from the
+ // P-state register pointed to by MSRC001_0061[CurPstateLimit] using the NB COF
+ // and VID transition sequence after a warm reset
+
+ // Step 15 Write 0 to PstateEn of the P-state register pointed to by (the new) F3xDC[PstateMaxVal]
+ LibAmdMsrRead ((MSR_PSTATE_0 + (PsMaxVal + 1)), &MsrRegister, StdHeader);
+ ((PSTATE_MSR *) &MsrRegister)->PsEnable = 0;
+ LibAmdMsrWrite ((MSR_PSTATE_0 + (PsMaxVal + 1)), &MsrRegister, StdHeader);
+
+ // Step 16 Write (the new) F3xDC[PstateMaxVal]-1 to F3xDC[PstateMaxVal]
+ LibAmdPciRead (AccessWidth32, PciAddress, &PciRegister, StdHeader);
+ ((CLK_PWR_TIMING_CTRL2_REGISTER *) &PciRegister)->PstateMaxVal = PsMaxVal;
+ LibAmdPciWrite (AccessWidth32, PciAddress, &PciRegister, StdHeader);
+ break;
+ case STEP17:
+ // Step 17 Copy F3xDC[PstateMaxVal]-1 to MSRC001_0062[PstateCmd]
+ FamilySpecificServices->TransitionPstate (FamilySpecificServices, (UINT8) (PsMaxVal - 1), (BOOLEAN) FALSE, StdHeader);
+
+ // Step 18 Wait for MSRC001_0071[CurCpuFid/CurCpuDid] = CpuFid/CpuDid from the P-state
+ // register pointed to by F3xDC[PstateMaxVal]-1
+ WaitForCpuFidAndDidToMatch ((UINT32) (PsMaxVal - 1), StdHeader);
+
+ // Step 19 If MSR C001_0071[CurNbDid] = 0, set MSR C001_001F[GfxNbPstateDis]
+ if ((LogicalId.Revision & (AMD_F10_C3 | AMD_F10_DA_C2)) != 0) {
+ LibAmdMsrRead (MSR_COFVID_STS, &MsrRegister, StdHeader);
+ if (((COFVID_STS_MSR *) &MsrRegister)->CurNbDid == 0) {
+ LibAmdMsrRead (NB_CFG, &MsrRegister, StdHeader);
+ MsrRegister |= BIT62;
+ LibAmdMsrWrite (NB_CFG, &MsrRegister, StdHeader);
+ }
+ }
+
+ // Fall through from step 19 to step 20
+ case STEP20:
+ // Step 20 Copy F3xDC[PstateMaxVal] to MSRC001_0062[PstateCmd]
+ FamilySpecificServices->TransitionPstate (FamilySpecificServices, (UINT8) PsMaxVal, (BOOLEAN) FALSE, StdHeader);
+
+ // Step 21 Wait for MSRC001_0071[CurCpuFid/CurCpuDid] = CpuFid/CpuDid from the P-state
+ // register pointed to by F3xDC[PstateMaxVal]
+ WaitForCpuFidAndDidToMatch (PsMaxVal, StdHeader);
+
+ // Step 22 If MSR C001_0071[CurNbDid] = 1, set MSR C001_001F[GfxNbPstateDis] and exit
+ // the sequence
+ if ((LogicalId.Revision & (AMD_F10_C3 | AMD_F10_DA_C2)) != 0) {
+ LibAmdMsrRead (MSR_COFVID_STS, &MsrRegister, StdHeader);
+ if (((COFVID_STS_MSR *) &MsrRegister)->CurNbDid == 1) {
+ LibAmdMsrRead (NB_CFG, &MsrRegister, StdHeader);
+ MsrRegister |= BIT62;
+ LibAmdMsrWrite (NB_CFG, &MsrRegister, StdHeader);
+ break;
+ }
+ }
+
+ // Step 23 Issue an LDTSTOP and exit the sequence
+
+ // Step 24 If required, transition the NB COF and VID to the NbDid and NbVid from the
+ // P-state register pointed to by F3xDC[PstateMaxVal] using the NB COF and VID
+ // transition sequence after a warm reset
+ break;
+ }
+}
+
+/*---------------------------------------------------------------------------------------*/
+/**
+ * Support routine for F10PmAfterResetCore to wait for Cpu FID and DID to
+ * match a specific P-state.
+ *
+ * This function implements steps 11, 13, 18, and 20 on each core as needed.
+ *
+ * @param[in] PstateNumber P-state settings to match
+ * @param[in] StdHeader Config handle for library and services.
+ *
+ */
+VOID
+STATIC
+WaitForCpuFidAndDidToMatch (
+ IN UINT32 PstateNumber,
+ IN AMD_CONFIG_PARAMS *StdHeader
+ )
+{
+ UINT64 TargetPsMsr;
+ UINT64 CurrentStatus;
+
+ // Get target P-state settings
+ LibAmdMsrRead ((MSR_PSTATE_0 + PstateNumber), &TargetPsMsr, StdHeader);
+
+ // Wait for current CPU FID/DID to match target FID/DID
+ do {
+ LibAmdMsrRead (MSR_COFVID_STS, &CurrentStatus, StdHeader);
+ } while ((((COFVID_STS_MSR *) &CurrentStatus)->CurCpuFid != ((PSTATE_MSR *) &TargetPsMsr)->CpuFid) ||
+ (((COFVID_STS_MSR *) &CurrentStatus)->CurCpuDid != ((PSTATE_MSR *) &TargetPsMsr)->CpuDid));
+}
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