\r
This local APIC library instance supports xAPIC mode only.\r
\r
- Copyright (c) 2010 - 2014, Intel Corporation. All rights reserved.<BR>\r
- This program and the accompanying materials\r
- are licensed and made available under the terms and conditions of the BSD License\r
- which accompanies this distribution. The full text of the license may be found at\r
- http://opensource.org/licenses/bsd-license.php\r
+ Copyright (c) 2010 - 2019, Intel Corporation. All rights reserved.<BR>\r
+ Copyright (c) 2017 - 2020, AMD Inc. All rights reserved.<BR>\r
\r
- THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
- WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+ SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
-#include <Register/LocalApic.h>\r
+#include <Register/Intel/Cpuid.h>\r
+#include <Register/Amd/Cpuid.h>\r
+#include <Register/Intel/Msr.h>\r
+#include <Register/Intel/LocalApic.h>\r
\r
#include <Library/BaseLib.h>\r
#include <Library/DebugLib.h>\r
#include <Library/LocalApicLib.h>\r
#include <Library/IoLib.h>\r
#include <Library/TimerLib.h>\r
+#include <Library/PcdLib.h>\r
+#include <Library/CpuLib.h>\r
+#include <Library/UefiCpuLib.h>\r
\r
//\r
// Library internal functions\r
//\r
\r
+/**\r
+ Determine if the CPU supports the Local APIC Base Address MSR.\r
+\r
+ @retval TRUE The CPU supports the Local APIC Base Address MSR.\r
+ @retval FALSE The CPU does not support the Local APIC Base Address MSR.\r
+\r
+**/\r
+BOOLEAN\r
+LocalApicBaseAddressMsrSupported (\r
+ VOID\r
+ )\r
+{\r
+ UINT32 RegEax;\r
+ UINTN FamilyId;\r
+\r
+ AsmCpuid (1, &RegEax, NULL, NULL, NULL);\r
+ FamilyId = BitFieldRead32 (RegEax, 8, 11);\r
+ if ((FamilyId == 0x04) || (FamilyId == 0x05)) {\r
+ //\r
+ // CPUs with a FamilyId of 0x04 or 0x05 do not support the\r
+ // Local APIC Base Address MSR\r
+ //\r
+ return FALSE;\r
+ }\r
+\r
+ return TRUE;\r
+}\r
+\r
/**\r
Retrieve the base address of local APIC.\r
\r
VOID\r
)\r
{\r
- MSR_IA32_APIC_BASE ApicBaseMsr;\r
- \r
- ApicBaseMsr.Uint64 = AsmReadMsr64 (MSR_IA32_APIC_BASE_ADDRESS);\r
- \r
- return (UINTN)(LShiftU64 ((UINT64) ApicBaseMsr.Bits.ApicBaseHigh, 32)) +\r
- (((UINTN)ApicBaseMsr.Bits.ApicBaseLow) << 12);\r
+ MSR_IA32_APIC_BASE_REGISTER ApicBaseMsr;\r
+\r
+ if (!LocalApicBaseAddressMsrSupported ()) {\r
+ //\r
+ // If CPU does not support Local APIC Base Address MSR, then retrieve\r
+ // Local APIC Base Address from PCD\r
+ //\r
+ return PcdGet32 (PcdCpuLocalApicBaseAddress);\r
+ }\r
+\r
+ ApicBaseMsr.Uint64 = AsmReadMsr64 (MSR_IA32_APIC_BASE);\r
+\r
+ return (UINTN)(LShiftU64 ((UINT64)ApicBaseMsr.Bits.ApicBaseHi, 32)) +\r
+ (((UINTN)ApicBaseMsr.Bits.ApicBase) << 12);\r
}\r
\r
/**\r
VOID\r
EFIAPI\r
SetLocalApicBaseAddress (\r
- IN UINTN BaseAddress\r
+ IN UINTN BaseAddress\r
)\r
{\r
- MSR_IA32_APIC_BASE ApicBaseMsr;\r
+ MSR_IA32_APIC_BASE_REGISTER ApicBaseMsr;\r
\r
ASSERT ((BaseAddress & (SIZE_4KB - 1)) == 0);\r
\r
- ApicBaseMsr.Uint64 = AsmReadMsr64 (MSR_IA32_APIC_BASE_ADDRESS);\r
+ if (!LocalApicBaseAddressMsrSupported ()) {\r
+ //\r
+ // Ignore set request if the CPU does not support APIC Base Address MSR\r
+ //\r
+ return;\r
+ }\r
+\r
+ ApicBaseMsr.Uint64 = AsmReadMsr64 (MSR_IA32_APIC_BASE);\r
\r
- ApicBaseMsr.Bits.ApicBaseLow = (UINT32) (BaseAddress >> 12);\r
- ApicBaseMsr.Bits.ApicBaseHigh = (UINT32) (RShiftU64((UINT64) BaseAddress, 32));\r
+ ApicBaseMsr.Bits.ApicBase = (UINT32)(BaseAddress >> 12);\r
+ ApicBaseMsr.Bits.ApicBaseHi = (UINT32)(RShiftU64 ((UINT64)BaseAddress, 32));\r
\r
- AsmWriteMsr64 (MSR_IA32_APIC_BASE_ADDRESS, ApicBaseMsr.Uint64);\r
+ AsmWriteMsr64 (MSR_IA32_APIC_BASE, ApicBaseMsr.Uint64);\r
}\r
\r
/**\r
ASSERT ((MmioOffset & 0xf) == 0);\r
ASSERT (GetApicMode () == LOCAL_APIC_MODE_XAPIC);\r
\r
- return MmioRead32 (GetLocalApicBaseAddress() + MmioOffset);\r
+ return MmioRead32 (GetLocalApicBaseAddress () + MmioOffset);\r
}\r
\r
/**\r
VOID\r
EFIAPI\r
WriteLocalApicReg (\r
- IN UINTN MmioOffset,\r
- IN UINT32 Value\r
+ IN UINTN MmioOffset,\r
+ IN UINT32 Value\r
)\r
{\r
ASSERT ((MmioOffset & 0xf) == 0);\r
ASSERT (GetApicMode () == LOCAL_APIC_MODE_XAPIC);\r
\r
- MmioWrite32 (GetLocalApicBaseAddress() + MmioOffset, Value);\r
+ MmioWrite32 (GetLocalApicBaseAddress () + MmioOffset, Value);\r
}\r
\r
/**\r
Send an IPI by writing to ICR.\r
\r
- This function returns after the IPI has been accepted by the target processor. \r
+ This function returns after the IPI has been accepted by the target processor.\r
\r
@param IcrLow 32-bit value to be written to the low half of ICR.\r
@param ApicId APIC ID of the target processor if this IPI is targeted for a specific processor.\r
**/\r
VOID\r
SendIpi (\r
- IN UINT32 IcrLow,\r
- IN UINT32 ApicId\r
+ IN UINT32 IcrLow,\r
+ IN UINT32 ApicId\r
)\r
{\r
- LOCAL_APIC_ICR_LOW IcrLowReg;\r
- UINT32 IcrHigh;\r
- BOOLEAN InterruptState;\r
+ LOCAL_APIC_ICR_LOW IcrLowReg;\r
+ UINT32 IcrHigh;\r
+ BOOLEAN InterruptState;\r
\r
ASSERT (GetApicMode () == LOCAL_APIC_MODE_XAPIC);\r
ASSERT (ApicId <= 0xff);\r
WriteLocalApicReg (XAPIC_ICR_HIGH_OFFSET, IcrHigh);\r
\r
SetInterruptState (InterruptState);\r
-\r
}\r
\r
//\r
VOID\r
)\r
{\r
- DEBUG_CODE (\r
- {\r
- MSR_IA32_APIC_BASE ApicBaseMsr;\r
+ DEBUG_CODE_BEGIN ();\r
+ {\r
+ MSR_IA32_APIC_BASE_REGISTER ApicBaseMsr;\r
\r
- ApicBaseMsr.Uint64 = AsmReadMsr64 (MSR_IA32_APIC_BASE_ADDRESS);\r
+ //\r
+ // Check to see if the CPU supports the APIC Base Address MSR\r
+ //\r
+ if (LocalApicBaseAddressMsrSupported ()) {\r
+ ApicBaseMsr.Uint64 = AsmReadMsr64 (MSR_IA32_APIC_BASE);\r
//\r
// Local APIC should have been enabled\r
//\r
- ASSERT (ApicBaseMsr.Bits.En != 0);\r
- ASSERT (ApicBaseMsr.Bits.Extd == 0);\r
+ ASSERT (ApicBaseMsr.Bits.EN != 0);\r
+ ASSERT (ApicBaseMsr.Bits.EXTD == 0);\r
}\r
- );\r
+ }\r
+ DEBUG_CODE_END ();\r
return LOCAL_APIC_MODE_XAPIC;\r
}\r
\r
Get the initial local APIC ID of the executing processor assigned by hardware upon power on or reset.\r
\r
In xAPIC mode, the initial local APIC ID may be different from current APIC ID.\r
- In x2APIC mode, the local APIC ID can't be changed and there is no concept of initial APIC ID. In this case, \r
+ In x2APIC mode, the local APIC ID can't be changed and there is no concept of initial APIC ID. In this case,\r
the 32-bit local APIC ID is returned as initial APIC ID.\r
\r
@return 32-bit initial local APIC ID of the executing processor.\r
VOID\r
)\r
{\r
- UINT32 ApicId;\r
- UINT32 MaxCpuIdIndex;\r
- UINT32 RegEbx;\r
+ UINT32 ApicId;\r
+ UINT32 MaxCpuIdIndex;\r
+ UINT32 RegEbx;\r
\r
ASSERT (GetApicMode () == LOCAL_APIC_MODE_XAPIC);\r
\r
AsmCpuid (CPUID_SIGNATURE, &MaxCpuIdIndex, NULL, NULL, NULL);\r
\r
//\r
- // If CPUID Leaf B is supported, \r
+ // If CPUID Leaf B is supported,\r
+ // And CPUID.0BH:EBX[15:0] reports a non-zero value,\r
// Then the initial 32-bit APIC ID = CPUID.0BH:EDX\r
// Else the initial 8-bit APIC ID = CPUID.1:EBX[31:24]\r
//\r
if (MaxCpuIdIndex >= CPUID_EXTENDED_TOPOLOGY) {\r
- AsmCpuidEx (CPUID_EXTENDED_TOPOLOGY, 0, NULL, NULL, NULL, &ApicId);\r
- return ApicId;\r
+ AsmCpuidEx (CPUID_EXTENDED_TOPOLOGY, 0, NULL, &RegEbx, NULL, &ApicId);\r
+ if ((RegEbx & (BIT16 - 1)) != 0) {\r
+ return ApicId;\r
+ }\r
}\r
\r
AsmCpuid (CPUID_VERSION_INFO, NULL, &RegEbx, NULL, NULL);\r
VOID\r
)\r
{\r
- UINT32 ApicId;\r
+ UINT32 ApicId;\r
\r
ASSERT (GetApicMode () == LOCAL_APIC_MODE_XAPIC);\r
- \r
+\r
if ((ApicId = GetInitialApicId ()) < 0x100) {\r
//\r
// If the initial local APIC ID is less 0x100, read APIC ID from\r
// XAPIC_ID_OFFSET, otherwise return the initial local APIC ID.\r
//\r
- ApicId = ReadLocalApicReg (XAPIC_ID_OFFSET);\r
+ ApicId = ReadLocalApicReg (XAPIC_ID_OFFSET);\r
ApicId >>= 24;\r
}\r
+\r
return ApicId;\r
}\r
\r
/**\r
Send a Fixed IPI to a specified target processor.\r
\r
- This function returns after the IPI has been accepted by the target processor. \r
+ This function returns after the IPI has been accepted by the target processor.\r
\r
@param ApicId The local APIC ID of the target processor.\r
@param Vector The vector number of the interrupt being sent.\r
VOID\r
EFIAPI\r
SendFixedIpi (\r
- IN UINT32 ApicId,\r
- IN UINT8 Vector\r
+ IN UINT32 ApicId,\r
+ IN UINT8 Vector\r
)\r
{\r
- LOCAL_APIC_ICR_LOW IcrLow;\r
+ LOCAL_APIC_ICR_LOW IcrLow;\r
\r
- IcrLow.Uint32 = 0;\r
+ IcrLow.Uint32 = 0;\r
IcrLow.Bits.DeliveryMode = LOCAL_APIC_DELIVERY_MODE_FIXED;\r
- IcrLow.Bits.Level = 1;\r
- IcrLow.Bits.Vector = Vector;\r
+ IcrLow.Bits.Level = 1;\r
+ IcrLow.Bits.Vector = Vector;\r
SendIpi (IcrLow.Uint32, ApicId);\r
}\r
\r
/**\r
Send a Fixed IPI to all processors excluding self.\r
\r
- This function returns after the IPI has been accepted by the target processors. \r
+ This function returns after the IPI has been accepted by the target processors.\r
\r
@param Vector The vector number of the interrupt being sent.\r
**/\r
VOID\r
EFIAPI\r
SendFixedIpiAllExcludingSelf (\r
- IN UINT8 Vector\r
+ IN UINT8 Vector\r
)\r
{\r
- LOCAL_APIC_ICR_LOW IcrLow;\r
+ LOCAL_APIC_ICR_LOW IcrLow;\r
\r
- IcrLow.Uint32 = 0;\r
- IcrLow.Bits.DeliveryMode = LOCAL_APIC_DELIVERY_MODE_FIXED;\r
- IcrLow.Bits.Level = 1;\r
+ IcrLow.Uint32 = 0;\r
+ IcrLow.Bits.DeliveryMode = LOCAL_APIC_DELIVERY_MODE_FIXED;\r
+ IcrLow.Bits.Level = 1;\r
IcrLow.Bits.DestinationShorthand = LOCAL_APIC_DESTINATION_SHORTHAND_ALL_EXCLUDING_SELF;\r
- IcrLow.Bits.Vector = Vector;\r
+ IcrLow.Bits.Vector = Vector;\r
SendIpi (IcrLow.Uint32, 0);\r
}\r
\r
/**\r
Send a SMI IPI to a specified target processor.\r
\r
- This function returns after the IPI has been accepted by the target processor. \r
+ This function returns after the IPI has been accepted by the target processor.\r
\r
@param ApicId Specify the local APIC ID of the target processor.\r
**/\r
VOID\r
EFIAPI\r
SendSmiIpi (\r
- IN UINT32 ApicId\r
+ IN UINT32 ApicId\r
)\r
{\r
- LOCAL_APIC_ICR_LOW IcrLow;\r
+ LOCAL_APIC_ICR_LOW IcrLow;\r
\r
- IcrLow.Uint32 = 0;\r
+ IcrLow.Uint32 = 0;\r
IcrLow.Bits.DeliveryMode = LOCAL_APIC_DELIVERY_MODE_SMI;\r
- IcrLow.Bits.Level = 1;\r
+ IcrLow.Bits.Level = 1;\r
SendIpi (IcrLow.Uint32, ApicId);\r
}\r
\r
/**\r
Send a SMI IPI to all processors excluding self.\r
\r
- This function returns after the IPI has been accepted by the target processors. \r
+ This function returns after the IPI has been accepted by the target processors.\r
**/\r
VOID\r
EFIAPI\r
VOID\r
)\r
{\r
- LOCAL_APIC_ICR_LOW IcrLow;\r
+ LOCAL_APIC_ICR_LOW IcrLow;\r
\r
- IcrLow.Uint32 = 0;\r
- IcrLow.Bits.DeliveryMode = LOCAL_APIC_DELIVERY_MODE_SMI;\r
- IcrLow.Bits.Level = 1;\r
+ IcrLow.Uint32 = 0;\r
+ IcrLow.Bits.DeliveryMode = LOCAL_APIC_DELIVERY_MODE_SMI;\r
+ IcrLow.Bits.Level = 1;\r
IcrLow.Bits.DestinationShorthand = LOCAL_APIC_DESTINATION_SHORTHAND_ALL_EXCLUDING_SELF;\r
SendIpi (IcrLow.Uint32, 0);\r
}\r
/**\r
Send an INIT IPI to a specified target processor.\r
\r
- This function returns after the IPI has been accepted by the target processor. \r
+ This function returns after the IPI has been accepted by the target processor.\r
\r
@param ApicId Specify the local APIC ID of the target processor.\r
**/\r
VOID\r
EFIAPI\r
SendInitIpi (\r
- IN UINT32 ApicId\r
+ IN UINT32 ApicId\r
)\r
{\r
- LOCAL_APIC_ICR_LOW IcrLow;\r
+ LOCAL_APIC_ICR_LOW IcrLow;\r
\r
- IcrLow.Uint32 = 0;\r
+ IcrLow.Uint32 = 0;\r
IcrLow.Bits.DeliveryMode = LOCAL_APIC_DELIVERY_MODE_INIT;\r
- IcrLow.Bits.Level = 1;\r
+ IcrLow.Bits.Level = 1;\r
SendIpi (IcrLow.Uint32, ApicId);\r
}\r
\r
/**\r
Send an INIT IPI to all processors excluding self.\r
\r
- This function returns after the IPI has been accepted by the target processors. \r
+ This function returns after the IPI has been accepted by the target processors.\r
**/\r
VOID\r
EFIAPI\r
VOID\r
)\r
{\r
- LOCAL_APIC_ICR_LOW IcrLow;\r
+ LOCAL_APIC_ICR_LOW IcrLow;\r
\r
- IcrLow.Uint32 = 0;\r
- IcrLow.Bits.DeliveryMode = LOCAL_APIC_DELIVERY_MODE_INIT;\r
- IcrLow.Bits.Level = 1;\r
+ IcrLow.Uint32 = 0;\r
+ IcrLow.Bits.DeliveryMode = LOCAL_APIC_DELIVERY_MODE_INIT;\r
+ IcrLow.Bits.Level = 1;\r
IcrLow.Bits.DestinationShorthand = LOCAL_APIC_DESTINATION_SHORTHAND_ALL_EXCLUDING_SELF;\r
SendIpi (IcrLow.Uint32, 0);\r
}\r
/**\r
Send an INIT-Start-up-Start-up IPI sequence to a specified target processor.\r
\r
- This function returns after the IPI has been accepted by the target processor. \r
+ This function returns after the IPI has been accepted by the target processor.\r
\r
if StartupRoutine >= 1M, then ASSERT.\r
if StartupRoutine is not multiple of 4K, then ASSERT.\r
VOID\r
EFIAPI\r
SendInitSipiSipi (\r
- IN UINT32 ApicId,\r
- IN UINT32 StartupRoutine\r
+ IN UINT32 ApicId,\r
+ IN UINT32 StartupRoutine\r
)\r
{\r
- LOCAL_APIC_ICR_LOW IcrLow;\r
+ LOCAL_APIC_ICR_LOW IcrLow;\r
\r
ASSERT (StartupRoutine < 0x100000);\r
ASSERT ((StartupRoutine & 0xfff) == 0);\r
\r
SendInitIpi (ApicId);\r
- MicroSecondDelay (PcdGet32(PcdCpuInitIpiDelayInMicroSeconds));\r
- IcrLow.Uint32 = 0;\r
- IcrLow.Bits.Vector = (StartupRoutine >> 12);\r
+ MicroSecondDelay (PcdGet32 (PcdCpuInitIpiDelayInMicroSeconds));\r
+ IcrLow.Uint32 = 0;\r
+ IcrLow.Bits.Vector = (StartupRoutine >> 12);\r
IcrLow.Bits.DeliveryMode = LOCAL_APIC_DELIVERY_MODE_STARTUP;\r
- IcrLow.Bits.Level = 1;\r
- SendIpi (IcrLow.Uint32, ApicId);\r
- MicroSecondDelay (200);\r
+ IcrLow.Bits.Level = 1;\r
SendIpi (IcrLow.Uint32, ApicId);\r
+ if (!StandardSignatureIsAuthenticAMD ()) {\r
+ MicroSecondDelay (200);\r
+ SendIpi (IcrLow.Uint32, ApicId);\r
+ }\r
}\r
\r
/**\r
Send an INIT-Start-up-Start-up IPI sequence to all processors excluding self.\r
\r
- This function returns after the IPI has been accepted by the target processors. \r
+ This function returns after the IPI has been accepted by the target processors.\r
\r
if StartupRoutine >= 1M, then ASSERT.\r
if StartupRoutine is not multiple of 4K, then ASSERT.\r
VOID\r
EFIAPI\r
SendInitSipiSipiAllExcludingSelf (\r
- IN UINT32 StartupRoutine\r
+ IN UINT32 StartupRoutine\r
)\r
{\r
- LOCAL_APIC_ICR_LOW IcrLow;\r
+ LOCAL_APIC_ICR_LOW IcrLow;\r
\r
ASSERT (StartupRoutine < 0x100000);\r
ASSERT ((StartupRoutine & 0xfff) == 0);\r
\r
SendInitIpiAllExcludingSelf ();\r
- MicroSecondDelay (PcdGet32(PcdCpuInitIpiDelayInMicroSeconds));\r
- IcrLow.Uint32 = 0;\r
- IcrLow.Bits.Vector = (StartupRoutine >> 12);\r
- IcrLow.Bits.DeliveryMode = LOCAL_APIC_DELIVERY_MODE_STARTUP;\r
- IcrLow.Bits.Level = 1;\r
+ MicroSecondDelay (PcdGet32 (PcdCpuInitIpiDelayInMicroSeconds));\r
+ IcrLow.Uint32 = 0;\r
+ IcrLow.Bits.Vector = (StartupRoutine >> 12);\r
+ IcrLow.Bits.DeliveryMode = LOCAL_APIC_DELIVERY_MODE_STARTUP;\r
+ IcrLow.Bits.Level = 1;\r
IcrLow.Bits.DestinationShorthand = LOCAL_APIC_DESTINATION_SHORTHAND_ALL_EXCLUDING_SELF;\r
SendIpi (IcrLow.Uint32, 0);\r
- MicroSecondDelay (200);\r
- SendIpi (IcrLow.Uint32, 0);\r
+ if (!StandardSignatureIsAuthenticAMD ()) {\r
+ MicroSecondDelay (200);\r
+ SendIpi (IcrLow.Uint32, 0);\r
+ }\r
+}\r
+\r
+/**\r
+ Initialize the state of the SoftwareEnable bit in the Local APIC\r
+ Spurious Interrupt Vector register.\r
+\r
+ @param Enable If TRUE, then set SoftwareEnable to 1\r
+ If FALSE, then set SoftwareEnable to 0.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+InitializeLocalApicSoftwareEnable (\r
+ IN BOOLEAN Enable\r
+ )\r
+{\r
+ LOCAL_APIC_SVR Svr;\r
+\r
+ //\r
+ // Set local APIC software-enabled bit.\r
+ //\r
+ Svr.Uint32 = ReadLocalApicReg (XAPIC_SPURIOUS_VECTOR_OFFSET);\r
+ if (Enable) {\r
+ if (Svr.Bits.SoftwareEnable == 0) {\r
+ Svr.Bits.SoftwareEnable = 1;\r
+ WriteLocalApicReg (XAPIC_SPURIOUS_VECTOR_OFFSET, Svr.Uint32);\r
+ }\r
+ } else {\r
+ if (Svr.Bits.SoftwareEnable == 1) {\r
+ Svr.Bits.SoftwareEnable = 0;\r
+ WriteLocalApicReg (XAPIC_SPURIOUS_VECTOR_OFFSET, Svr.Uint32);\r
+ }\r
+ }\r
}\r
\r
/**\r
VOID\r
)\r
{\r
- LOCAL_APIC_SVR Svr;\r
- LOCAL_APIC_LVT_LINT Lint;\r
+ LOCAL_APIC_SVR Svr;\r
+ LOCAL_APIC_LVT_LINT Lint;\r
\r
//\r
// Enable the APIC via SVR and set the spurious interrupt to use Int 00F.\r
//\r
- Svr.Uint32 = ReadLocalApicReg (XAPIC_SPURIOUS_VECTOR_OFFSET);\r
+ Svr.Uint32 = ReadLocalApicReg (XAPIC_SPURIOUS_VECTOR_OFFSET);\r
Svr.Bits.SpuriousVector = 0xf;\r
Svr.Bits.SoftwareEnable = 1;\r
WriteLocalApicReg (XAPIC_SPURIOUS_VECTOR_OFFSET, Svr.Uint32);\r
//\r
// Program the LINT0 vector entry as ExtInt. Not masked, edge, active high.\r
//\r
- Lint.Uint32 = ReadLocalApicReg (XAPIC_LVT_LINT0_OFFSET);\r
- Lint.Bits.DeliveryMode = LOCAL_APIC_DELIVERY_MODE_EXTINT;\r
+ Lint.Uint32 = ReadLocalApicReg (XAPIC_LVT_LINT0_OFFSET);\r
+ Lint.Bits.DeliveryMode = LOCAL_APIC_DELIVERY_MODE_EXTINT;\r
Lint.Bits.InputPinPolarity = 0;\r
- Lint.Bits.TriggerMode = 0;\r
- Lint.Bits.Mask = 0;\r
+ Lint.Bits.TriggerMode = 0;\r
+ Lint.Bits.Mask = 0;\r
WriteLocalApicReg (XAPIC_LVT_LINT0_OFFSET, Lint.Uint32);\r
\r
//\r
// Program the LINT0 vector entry as NMI. Not masked, edge, active high.\r
//\r
- Lint.Uint32 = ReadLocalApicReg (XAPIC_LVT_LINT1_OFFSET);\r
- Lint.Bits.DeliveryMode = LOCAL_APIC_DELIVERY_MODE_NMI;\r
+ Lint.Uint32 = ReadLocalApicReg (XAPIC_LVT_LINT1_OFFSET);\r
+ Lint.Bits.DeliveryMode = LOCAL_APIC_DELIVERY_MODE_NMI;\r
Lint.Bits.InputPinPolarity = 0;\r
- Lint.Bits.TriggerMode = 0;\r
- Lint.Bits.Mask = 0;\r
+ Lint.Bits.TriggerMode = 0;\r
+ Lint.Bits.Mask = 0;\r
WriteLocalApicReg (XAPIC_LVT_LINT1_OFFSET, Lint.Uint32);\r
}\r
\r
VOID\r
)\r
{\r
- LOCAL_APIC_LVT_LINT LvtLint;\r
+ LOCAL_APIC_LVT_LINT LvtLint;\r
\r
- LvtLint.Uint32 = ReadLocalApicReg (XAPIC_LVT_LINT0_OFFSET);\r
+ LvtLint.Uint32 = ReadLocalApicReg (XAPIC_LVT_LINT0_OFFSET);\r
LvtLint.Bits.Mask = 1;\r
WriteLocalApicReg (XAPIC_LVT_LINT0_OFFSET, LvtLint.Uint32);\r
\r
- LvtLint.Uint32 = ReadLocalApicReg (XAPIC_LVT_LINT1_OFFSET);\r
+ LvtLint.Uint32 = ReadLocalApicReg (XAPIC_LVT_LINT1_OFFSET);\r
LvtLint.Bits.Mask = 1;\r
WriteLocalApicReg (XAPIC_LVT_LINT1_OFFSET, LvtLint.Uint32);\r
}\r
VOID\r
EFIAPI\r
InitializeApicTimer (\r
- IN UINTN DivideValue,\r
- IN UINT32 InitCount,\r
- IN BOOLEAN PeriodicMode,\r
- IN UINT8 Vector\r
+ IN UINTN DivideValue,\r
+ IN UINT32 InitCount,\r
+ IN BOOLEAN PeriodicMode,\r
+ IN UINT8 Vector\r
)\r
{\r
- LOCAL_APIC_SVR Svr;\r
- LOCAL_APIC_DCR Dcr;\r
- LOCAL_APIC_LVT_TIMER LvtTimer;\r
- UINT32 Divisor;\r
+ LOCAL_APIC_DCR Dcr;\r
+ LOCAL_APIC_LVT_TIMER LvtTimer;\r
+ UINT32 Divisor;\r
\r
//\r
// Ensure local APIC is in software-enabled state.\r
//\r
- Svr.Uint32 = ReadLocalApicReg (XAPIC_SPURIOUS_VECTOR_OFFSET);\r
- Svr.Bits.SoftwareEnable = 1;\r
- WriteLocalApicReg (XAPIC_SPURIOUS_VECTOR_OFFSET, Svr.Uint32);\r
+ InitializeLocalApicSoftwareEnable (TRUE);\r
\r
//\r
// Program init-count register.\r
\r
if (DivideValue != 0) {\r
ASSERT (DivideValue <= 128);\r
- ASSERT (DivideValue == GetPowerOfTwo32((UINT32)DivideValue));\r
+ ASSERT (DivideValue == GetPowerOfTwo32 ((UINT32)DivideValue));\r
Divisor = (UINT32)((HighBitSet32 ((UINT32)DivideValue) - 1) & 0x7);\r
\r
- Dcr.Uint32 = ReadLocalApicReg (XAPIC_TIMER_DIVIDE_CONFIGURATION_OFFSET);\r
+ Dcr.Uint32 = ReadLocalApicReg (XAPIC_TIMER_DIVIDE_CONFIGURATION_OFFSET);\r
Dcr.Bits.DivideValue1 = (Divisor & 0x3);\r
Dcr.Bits.DivideValue2 = (Divisor >> 2);\r
- WriteLocalApicReg (XAPIC_TIMER_DIVIDE_CONFIGURATION_OFFSET, Dcr.Uint32); \r
+ WriteLocalApicReg (XAPIC_TIMER_DIVIDE_CONFIGURATION_OFFSET, Dcr.Uint32);\r
}\r
\r
//\r
} else {\r
LvtTimer.Bits.TimerMode = 0;\r
}\r
- LvtTimer.Bits.Mask = 0;\r
+\r
+ LvtTimer.Bits.Mask = 0;\r
LvtTimer.Bits.Vector = Vector;\r
WriteLocalApicReg (XAPIC_LVT_TIMER_OFFSET, LvtTimer.Uint32);\r
}\r
/**\r
Get the state of the local APIC timer.\r
\r
+ This function will ASSERT if the local APIC is not software enabled.\r
+\r
@param DivideValue Return the divide value for the DCR. It is one of 1,2,4,8,16,32,64,128.\r
@param PeriodicMode Return the timer mode. If TRUE, timer mode is peridoic. Othewise, timer mode is one-shot.\r
@param Vector Return the timer interrupt vector number.\r
OUT UINT8 *Vector OPTIONAL\r
)\r
{\r
- UINT32 Divisor;\r
- LOCAL_APIC_DCR Dcr;\r
- LOCAL_APIC_LVT_TIMER LvtTimer;\r
+ UINT32 Divisor;\r
+ LOCAL_APIC_DCR Dcr;\r
+ LOCAL_APIC_LVT_TIMER LvtTimer;\r
+\r
+ //\r
+ // Check the APIC Software Enable/Disable bit (bit 8) in Spurious-Interrupt\r
+ // Vector Register.\r
+ // This bit will be 1, if local APIC is software enabled.\r
+ //\r
+ ASSERT ((ReadLocalApicReg (XAPIC_SPURIOUS_VECTOR_OFFSET) & BIT8) != 0);\r
\r
if (DivideValue != NULL) {\r
- Dcr.Uint32 = ReadLocalApicReg (XAPIC_TIMER_DIVIDE_CONFIGURATION_OFFSET);\r
- Divisor = Dcr.Bits.DivideValue1 | (Dcr.Bits.DivideValue2 << 2);\r
- Divisor = (Divisor + 1) & 0x7;\r
+ Dcr.Uint32 = ReadLocalApicReg (XAPIC_TIMER_DIVIDE_CONFIGURATION_OFFSET);\r
+ Divisor = Dcr.Bits.DivideValue1 | (Dcr.Bits.DivideValue2 << 2);\r
+ Divisor = (Divisor + 1) & 0x7;\r
*DivideValue = ((UINTN)1) << Divisor;\r
}\r
\r
- if (PeriodicMode != NULL || Vector != NULL) {\r
+ if ((PeriodicMode != NULL) || (Vector != NULL)) {\r
LvtTimer.Uint32 = ReadLocalApicReg (XAPIC_LVT_TIMER_OFFSET);\r
if (PeriodicMode != NULL) {\r
if (LvtTimer.Bits.TimerMode == 1) {\r
*PeriodicMode = FALSE;\r
}\r
}\r
+\r
if (Vector != NULL) {\r
- *Vector = (UINT8) LvtTimer.Bits.Vector;\r
+ *Vector = (UINT8)LvtTimer.Bits.Vector;\r
}\r
}\r
}\r
VOID\r
)\r
{\r
- LOCAL_APIC_LVT_TIMER LvtTimer;\r
+ LOCAL_APIC_LVT_TIMER LvtTimer;\r
\r
- LvtTimer.Uint32 = ReadLocalApicReg (XAPIC_LVT_TIMER_OFFSET);\r
+ LvtTimer.Uint32 = ReadLocalApicReg (XAPIC_LVT_TIMER_OFFSET);\r
LvtTimer.Bits.Mask = 0;\r
WriteLocalApicReg (XAPIC_LVT_TIMER_OFFSET, LvtTimer.Uint32);\r
}\r
VOID\r
)\r
{\r
- LOCAL_APIC_LVT_TIMER LvtTimer;\r
+ LOCAL_APIC_LVT_TIMER LvtTimer;\r
\r
- LvtTimer.Uint32 = ReadLocalApicReg (XAPIC_LVT_TIMER_OFFSET);\r
+ LvtTimer.Uint32 = ReadLocalApicReg (XAPIC_LVT_TIMER_OFFSET);\r
LvtTimer.Bits.Mask = 1;\r
WriteLocalApicReg (XAPIC_LVT_TIMER_OFFSET, LvtTimer.Uint32);\r
}\r
VOID\r
)\r
{\r
- LOCAL_APIC_LVT_TIMER LvtTimer;\r
+ LOCAL_APIC_LVT_TIMER LvtTimer;\r
\r
LvtTimer.Uint32 = ReadLocalApicReg (XAPIC_LVT_TIMER_OFFSET);\r
return (BOOLEAN)(LvtTimer.Bits.Mask == 0);\r
}\r
\r
/**\r
- Get the 32-bit address that a device should use to send a Message Signaled \r
+ Get the 32-bit address that a device should use to send a Message Signaled\r
Interrupt (MSI) to the Local APIC of the currently executing processor.\r
\r
@return 32-bit address used to send an MSI to the Local APIC.\r
**/\r
UINT32\r
-EFIAPI \r
+EFIAPI\r
GetApicMsiAddress (\r
VOID\r
)\r
LOCAL_APIC_MSI_ADDRESS MsiAddress;\r
\r
//\r
- // Return address for an MSI interrupt to be delivered only to the APIC ID \r
+ // Return address for an MSI interrupt to be delivered only to the APIC ID\r
// of the currently executing processor.\r
//\r
MsiAddress.Uint32 = 0;\r
MsiAddress.Bits.DestinationId = GetApicId ();\r
return MsiAddress.Uint32;\r
}\r
- \r
+\r
/**\r
- Get the 64-bit data value that a device should use to send a Message Signaled \r
+ Get the 64-bit data value that a device should use to send a Message Signaled\r
Interrupt (MSI) to the Local APIC of the currently executing processor.\r
\r
If Vector is not in range 0x10..0xFE, then ASSERT().\r
If DeliveryMode is not supported, then ASSERT().\r
- \r
- @param Vector The 8-bit interrupt vector associated with the MSI. \r
+\r
+ @param Vector The 8-bit interrupt vector associated with the MSI.\r
Must be in the range 0x10..0xFE\r
- @param DeliveryMode A 3-bit value that specifies how the recept of the MSI \r
+ @param DeliveryMode A 3-bit value that specifies how the recept of the MSI\r
is handled. The only supported values are:\r
0: LOCAL_APIC_DELIVERY_MODE_FIXED\r
1: LOCAL_APIC_DELIVERY_MODE_LOWEST_PRIORITY\r
4: LOCAL_APIC_DELIVERY_MODE_NMI\r
5: LOCAL_APIC_DELIVERY_MODE_INIT\r
7: LOCAL_APIC_DELIVERY_MODE_EXTINT\r
- \r
- @param LevelTriggered TRUE specifies a level triggered interrupt. \r
+\r
+ @param LevelTriggered TRUE specifies a level triggered interrupt.\r
FALSE specifies an edge triggered interrupt.\r
@param AssertionLevel Ignored if LevelTriggered is FALSE.\r
- TRUE specifies a level triggered interrupt that active \r
+ TRUE specifies a level triggered interrupt that active\r
when the interrupt line is asserted.\r
- FALSE specifies a level triggered interrupt that active \r
+ FALSE specifies a level triggered interrupt that active\r
when the interrupt line is deasserted.\r
\r
@return 64-bit data value used to send an MSI to the Local APIC.\r
**/\r
UINT64\r
-EFIAPI \r
+EFIAPI\r
GetApicMsiValue (\r
IN UINT8 Vector,\r
IN UINTN DeliveryMode,\r
\r
ASSERT (Vector >= 0x10 && Vector <= 0xFE);\r
ASSERT (DeliveryMode < 8 && DeliveryMode != 6 && DeliveryMode != 3);\r
- \r
+\r
MsiData.Uint64 = 0;\r
MsiData.Bits.Vector = Vector;\r
MsiData.Bits.DeliveryMode = (UINT32)DeliveryMode;\r
MsiData.Bits.Level = 1;\r
}\r
}\r
+\r
return MsiData.Uint64;\r
}\r
+\r
+/**\r
+ Get Package ID/Core ID/Thread ID of a processor.\r
+\r
+ The algorithm assumes the target system has symmetry across physical\r
+ package boundaries with respect to the number of logical processors\r
+ per package, number of cores per package.\r
+\r
+ @param[in] InitialApicId Initial APIC ID of the target logical processor.\r
+ @param[out] Package Returns the processor package ID.\r
+ @param[out] Core Returns the processor core ID.\r
+ @param[out] Thread Returns the processor thread ID.\r
+**/\r
+VOID\r
+EFIAPI\r
+GetProcessorLocationByApicId (\r
+ IN UINT32 InitialApicId,\r
+ OUT UINT32 *Package OPTIONAL,\r
+ OUT UINT32 *Core OPTIONAL,\r
+ OUT UINT32 *Thread OPTIONAL\r
+ )\r
+{\r
+ BOOLEAN TopologyLeafSupported;\r
+ CPUID_VERSION_INFO_EBX VersionInfoEbx;\r
+ CPUID_VERSION_INFO_EDX VersionInfoEdx;\r
+ CPUID_CACHE_PARAMS_EAX CacheParamsEax;\r
+ CPUID_EXTENDED_TOPOLOGY_EAX ExtendedTopologyEax;\r
+ CPUID_EXTENDED_TOPOLOGY_EBX ExtendedTopologyEbx;\r
+ CPUID_EXTENDED_TOPOLOGY_ECX ExtendedTopologyEcx;\r
+ CPUID_AMD_EXTENDED_CPU_SIG_ECX AmdExtendedCpuSigEcx;\r
+ CPUID_AMD_PROCESSOR_TOPOLOGY_EBX AmdProcessorTopologyEbx;\r
+ CPUID_AMD_VIR_PHY_ADDRESS_SIZE_ECX AmdVirPhyAddressSizeEcx;\r
+ UINT32 MaxStandardCpuIdIndex;\r
+ UINT32 MaxExtendedCpuIdIndex;\r
+ UINT32 SubIndex;\r
+ UINTN LevelType;\r
+ UINT32 MaxLogicProcessorsPerPackage;\r
+ UINT32 MaxCoresPerPackage;\r
+ UINTN ThreadBits;\r
+ UINTN CoreBits;\r
+\r
+ //\r
+ // Check if the processor is capable of supporting more than one logical processor.\r
+ //\r
+ AsmCpuid (CPUID_VERSION_INFO, NULL, NULL, NULL, &VersionInfoEdx.Uint32);\r
+ if (VersionInfoEdx.Bits.HTT == 0) {\r
+ if (Thread != NULL) {\r
+ *Thread = 0;\r
+ }\r
+\r
+ if (Core != NULL) {\r
+ *Core = 0;\r
+ }\r
+\r
+ if (Package != NULL) {\r
+ *Package = 0;\r
+ }\r
+\r
+ return;\r
+ }\r
+\r
+ //\r
+ // Assume three-level mapping of APIC ID: Package|Core|Thread.\r
+ //\r
+ ThreadBits = 0;\r
+ CoreBits = 0;\r
+\r
+ //\r
+ // Get max index of CPUID\r
+ //\r
+ AsmCpuid (CPUID_SIGNATURE, &MaxStandardCpuIdIndex, NULL, NULL, NULL);\r
+ AsmCpuid (CPUID_EXTENDED_FUNCTION, &MaxExtendedCpuIdIndex, NULL, NULL, NULL);\r
+\r
+ //\r
+ // If the extended topology enumeration leaf is available, it\r
+ // is the preferred mechanism for enumerating topology.\r
+ //\r
+ TopologyLeafSupported = FALSE;\r
+ if (MaxStandardCpuIdIndex >= CPUID_EXTENDED_TOPOLOGY) {\r
+ AsmCpuidEx (\r
+ CPUID_EXTENDED_TOPOLOGY,\r
+ 0,\r
+ &ExtendedTopologyEax.Uint32,\r
+ &ExtendedTopologyEbx.Uint32,\r
+ &ExtendedTopologyEcx.Uint32,\r
+ NULL\r
+ );\r
+ //\r
+ // If CPUID.(EAX=0BH, ECX=0H):EBX returns zero and maximum input value for\r
+ // basic CPUID information is greater than 0BH, then CPUID.0BH leaf is not\r
+ // supported on that processor.\r
+ //\r
+ if (ExtendedTopologyEbx.Uint32 != 0) {\r
+ TopologyLeafSupported = TRUE;\r
+\r
+ //\r
+ // Sub-leaf index 0 (ECX= 0 as input) provides enumeration parameters to extract\r
+ // the SMT sub-field of x2APIC ID.\r
+ //\r
+ LevelType = ExtendedTopologyEcx.Bits.LevelType;\r
+ ASSERT (LevelType == CPUID_EXTENDED_TOPOLOGY_LEVEL_TYPE_SMT);\r
+ ThreadBits = ExtendedTopologyEax.Bits.ApicIdShift;\r
+\r
+ //\r
+ // Software must not assume any "level type" encoding\r
+ // value to be related to any sub-leaf index, except sub-leaf 0.\r
+ //\r
+ SubIndex = 1;\r
+ do {\r
+ AsmCpuidEx (\r
+ CPUID_EXTENDED_TOPOLOGY,\r
+ SubIndex,\r
+ &ExtendedTopologyEax.Uint32,\r
+ NULL,\r
+ &ExtendedTopologyEcx.Uint32,\r
+ NULL\r
+ );\r
+ LevelType = ExtendedTopologyEcx.Bits.LevelType;\r
+ if (LevelType == CPUID_EXTENDED_TOPOLOGY_LEVEL_TYPE_CORE) {\r
+ CoreBits = ExtendedTopologyEax.Bits.ApicIdShift - ThreadBits;\r
+ break;\r
+ }\r
+\r
+ SubIndex++;\r
+ } while (LevelType != CPUID_EXTENDED_TOPOLOGY_LEVEL_TYPE_INVALID);\r
+ }\r
+ }\r
+\r
+ if (!TopologyLeafSupported) {\r
+ //\r
+ // Get logical processor count\r
+ //\r
+ AsmCpuid (CPUID_VERSION_INFO, NULL, &VersionInfoEbx.Uint32, NULL, NULL);\r
+ MaxLogicProcessorsPerPackage = VersionInfoEbx.Bits.MaximumAddressableIdsForLogicalProcessors;\r
+\r
+ //\r
+ // Assume single-core processor\r
+ //\r
+ MaxCoresPerPackage = 1;\r
+\r
+ //\r
+ // Check for topology extensions on AMD processor\r
+ //\r
+ if (StandardSignatureIsAuthenticAMD ()) {\r
+ if (MaxExtendedCpuIdIndex >= CPUID_AMD_PROCESSOR_TOPOLOGY) {\r
+ AsmCpuid (CPUID_EXTENDED_CPU_SIG, NULL, NULL, &AmdExtendedCpuSigEcx.Uint32, NULL);\r
+ if (AmdExtendedCpuSigEcx.Bits.TopologyExtensions != 0) {\r
+ //\r
+ // Account for max possible thread count to decode ApicId\r
+ //\r
+ AsmCpuid (CPUID_VIR_PHY_ADDRESS_SIZE, NULL, NULL, &AmdVirPhyAddressSizeEcx.Uint32, NULL);\r
+ MaxLogicProcessorsPerPackage = 1 << AmdVirPhyAddressSizeEcx.Bits.ApicIdCoreIdSize;\r
+\r
+ //\r
+ // Get cores per processor package\r
+ //\r
+ AsmCpuid (CPUID_AMD_PROCESSOR_TOPOLOGY, NULL, &AmdProcessorTopologyEbx.Uint32, NULL, NULL);\r
+ MaxCoresPerPackage = MaxLogicProcessorsPerPackage / (AmdProcessorTopologyEbx.Bits.ThreadsPerCore + 1);\r
+ }\r
+ }\r
+ } else {\r
+ //\r
+ // Extract core count based on CACHE information\r
+ //\r
+ if (MaxStandardCpuIdIndex >= CPUID_CACHE_PARAMS) {\r
+ AsmCpuidEx (CPUID_CACHE_PARAMS, 0, &CacheParamsEax.Uint32, NULL, NULL, NULL);\r
+ if (CacheParamsEax.Uint32 != 0) {\r
+ MaxCoresPerPackage = CacheParamsEax.Bits.MaximumAddressableIdsForLogicalProcessors + 1;\r
+ }\r
+ }\r
+ }\r
+\r
+ ThreadBits = (UINTN)(HighBitSet32 (MaxLogicProcessorsPerPackage / MaxCoresPerPackage - 1) + 1);\r
+ CoreBits = (UINTN)(HighBitSet32 (MaxCoresPerPackage - 1) + 1);\r
+ }\r
+\r
+ if (Thread != NULL) {\r
+ *Thread = InitialApicId & ((1 << ThreadBits) - 1);\r
+ }\r
+\r
+ if (Core != NULL) {\r
+ *Core = (InitialApicId >> ThreadBits) & ((1 << CoreBits) - 1);\r
+ }\r
+\r
+ if (Package != NULL) {\r
+ *Package = (InitialApicId >> (ThreadBits + CoreBits));\r
+ }\r
+}\r
+\r
+/**\r
+ Get Package ID/Die ID/Tile ID/Module ID/Core ID/Thread ID of a processor.\r
+\r
+ The algorithm assumes the target system has symmetry across physical\r
+ package boundaries with respect to the number of threads per core, number of\r
+ cores per module, number of modules per tile, number of tiles per die, number\r
+ of dies per package.\r
+\r
+ @param[in] InitialApicId Initial APIC ID of the target logical processor.\r
+ @param[out] Package Returns the processor package ID.\r
+ @param[out] Die Returns the processor die ID.\r
+ @param[out] Tile Returns the processor tile ID.\r
+ @param[out] Module Returns the processor module ID.\r
+ @param[out] Core Returns the processor core ID.\r
+ @param[out] Thread Returns the processor thread ID.\r
+**/\r
+VOID\r
+EFIAPI\r
+GetProcessorLocation2ByApicId (\r
+ IN UINT32 InitialApicId,\r
+ OUT UINT32 *Package OPTIONAL,\r
+ OUT UINT32 *Die OPTIONAL,\r
+ OUT UINT32 *Tile OPTIONAL,\r
+ OUT UINT32 *Module OPTIONAL,\r
+ OUT UINT32 *Core OPTIONAL,\r
+ OUT UINT32 *Thread OPTIONAL\r
+ )\r
+{\r
+ CPUID_EXTENDED_TOPOLOGY_EAX ExtendedTopologyEax;\r
+ CPUID_EXTENDED_TOPOLOGY_ECX ExtendedTopologyEcx;\r
+ UINT32 MaxStandardCpuIdIndex;\r
+ UINT32 Index;\r
+ UINTN LevelType;\r
+ UINT32 Bits[CPUID_V2_EXTENDED_TOPOLOGY_LEVEL_TYPE_DIE + 2];\r
+ UINT32 *Location[CPUID_V2_EXTENDED_TOPOLOGY_LEVEL_TYPE_DIE + 2];\r
+\r
+ for (LevelType = 0; LevelType < ARRAY_SIZE (Bits); LevelType++) {\r
+ Bits[LevelType] = 0;\r
+ }\r
+\r
+ //\r
+ // Get max index of CPUID\r
+ //\r
+ AsmCpuid (CPUID_SIGNATURE, &MaxStandardCpuIdIndex, NULL, NULL, NULL);\r
+ if (MaxStandardCpuIdIndex < CPUID_V2_EXTENDED_TOPOLOGY) {\r
+ if (Die != NULL) {\r
+ *Die = 0;\r
+ }\r
+\r
+ if (Tile != NULL) {\r
+ *Tile = 0;\r
+ }\r
+\r
+ if (Module != NULL) {\r
+ *Module = 0;\r
+ }\r
+\r
+ GetProcessorLocationByApicId (InitialApicId, Package, Core, Thread);\r
+ return;\r
+ }\r
+\r
+ //\r
+ // If the V2 extended topology enumeration leaf is available, it\r
+ // is the preferred mechanism for enumerating topology.\r
+ //\r
+ for (Index = 0; ; Index++) {\r
+ AsmCpuidEx (\r
+ CPUID_V2_EXTENDED_TOPOLOGY,\r
+ Index,\r
+ &ExtendedTopologyEax.Uint32,\r
+ NULL,\r
+ &ExtendedTopologyEcx.Uint32,\r
+ NULL\r
+ );\r
+\r
+ LevelType = ExtendedTopologyEcx.Bits.LevelType;\r
+\r
+ //\r
+ // first level reported should be SMT.\r
+ //\r
+ ASSERT ((Index != 0) || (LevelType == CPUID_EXTENDED_TOPOLOGY_LEVEL_TYPE_SMT));\r
+ if (LevelType == CPUID_EXTENDED_TOPOLOGY_LEVEL_TYPE_INVALID) {\r
+ break;\r
+ }\r
+\r
+ ASSERT (LevelType < ARRAY_SIZE (Bits));\r
+ Bits[LevelType] = ExtendedTopologyEax.Bits.ApicIdShift;\r
+ }\r
+\r
+ for (LevelType = CPUID_EXTENDED_TOPOLOGY_LEVEL_TYPE_CORE; LevelType < ARRAY_SIZE (Bits); LevelType++) {\r
+ //\r
+ // If there are more levels between level-1 (low-level) and level-2 (high-level), the unknown levels will be ignored\r
+ // and treated as an extension of the last known level (i.e., level-1 in this case).\r
+ //\r
+ if (Bits[LevelType] == 0) {\r
+ Bits[LevelType] = Bits[LevelType - 1];\r
+ }\r
+ }\r
+\r
+ Location[CPUID_V2_EXTENDED_TOPOLOGY_LEVEL_TYPE_DIE + 1] = Package;\r
+ Location[CPUID_V2_EXTENDED_TOPOLOGY_LEVEL_TYPE_DIE] = Die;\r
+ Location[CPUID_V2_EXTENDED_TOPOLOGY_LEVEL_TYPE_TILE] = Tile;\r
+ Location[CPUID_V2_EXTENDED_TOPOLOGY_LEVEL_TYPE_MODULE] = Module;\r
+ Location[CPUID_EXTENDED_TOPOLOGY_LEVEL_TYPE_CORE] = Core;\r
+ Location[CPUID_EXTENDED_TOPOLOGY_LEVEL_TYPE_SMT] = Thread;\r
+\r
+ Bits[CPUID_V2_EXTENDED_TOPOLOGY_LEVEL_TYPE_DIE + 1] = 32;\r
+\r
+ for ( LevelType = CPUID_EXTENDED_TOPOLOGY_LEVEL_TYPE_SMT\r
+ ; LevelType <= CPUID_V2_EXTENDED_TOPOLOGY_LEVEL_TYPE_DIE + 1\r
+ ; LevelType++\r
+ )\r
+ {\r
+ if (Location[LevelType] != NULL) {\r
+ //\r
+ // Bits[i] holds the number of bits to shift right on x2APIC ID to get a unique\r
+ // topology ID of the next level type.\r
+ //\r
+ *Location[LevelType] = InitialApicId >> Bits[LevelType - 1];\r
+\r
+ //\r
+ // Bits[i] - Bits[i-1] holds the number of bits for the next ONE level type.\r
+ //\r
+ *Location[LevelType] &= (1 << (Bits[LevelType] - Bits[LevelType - 1])) - 1;\r
+ }\r
+ }\r
+}\r
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