diff options
Diffstat (limited to 'UefiCpuPkg/PiSmmCpuDxeSmm/CpuService.c')
| -rw-r--r-- | UefiCpuPkg/PiSmmCpuDxeSmm/CpuService.c | 486 |
1 files changed, 0 insertions, 486 deletions
diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/CpuService.c b/UefiCpuPkg/PiSmmCpuDxeSmm/CpuService.c deleted file mode 100644 index 40f2a1719d..0000000000 --- a/UefiCpuPkg/PiSmmCpuDxeSmm/CpuService.c +++ /dev/null @@ -1,486 +0,0 @@ -/** @file
-Implementation of SMM CPU Services Protocol.
-
-Copyright (c) 2011 - 2015, Intel Corporation. All rights reserved.<BR>
-This program and the accompanying materials
-are licensed and made available under the terms and conditions of the BSD License
-which accompanies this distribution. The full text of the license may be found at
-http://opensource.org/licenses/bsd-license.php
-
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-
-**/
-
-#include "PiSmmCpuDxeSmm.h"
-
-//
-// SMM CPU Service Protocol instance
-//
-EFI_SMM_CPU_SERVICE_PROTOCOL mSmmCpuService = {
- SmmGetProcessorInfo,
- SmmSwitchBsp,
- SmmAddProcessor,
- SmmRemoveProcessor,
- SmmWhoAmI,
- SmmRegisterExceptionHandler
-};
-
-/**
- Get Package ID/Core ID/Thread ID of a processor.
-
- APIC ID must be an initial APIC ID.
-
- The algorithm below assumes the target system has symmetry across physical package boundaries
- with respect to the number of logical processors per package, number of cores per package.
-
- @param ApicId APIC ID of the target logical processor.
- @param Location Returns the processor location information.
-**/
-VOID
-SmmGetProcessorLocation (
- IN UINT32 ApicId,
- OUT EFI_CPU_PHYSICAL_LOCATION *Location
- )
-{
- UINTN ThreadBits;
- UINTN CoreBits;
- UINT32 RegEax;
- UINT32 RegEbx;
- UINT32 RegEcx;
- UINT32 RegEdx;
- UINT32 MaxCpuIdIndex;
- UINT32 SubIndex;
- UINTN LevelType;
- UINT32 MaxLogicProcessorsPerPackage;
- UINT32 MaxCoresPerPackage;
- BOOLEAN TopologyLeafSupported;
-
- ASSERT (Location != NULL);
-
- ThreadBits = 0;
- CoreBits = 0;
- TopologyLeafSupported = FALSE;
-
- //
- // Check if the processor is capable of supporting more than one logical processor.
- //
- AsmCpuid (CPUID_VERSION_INFO, NULL, NULL, NULL, &RegEdx);
- ASSERT ((RegEdx & BIT28) != 0);
-
- //
- // Assume three-level mapping of APIC ID: Package:Core:SMT.
- //
-
- //
- // Get the max index of basic CPUID
- //
- AsmCpuid (CPUID_SIGNATURE, &MaxCpuIdIndex, NULL, NULL, NULL);
-
- //
- // If the extended topology enumeration leaf is available, it
- // is the preferred mechanism for enumerating topology.
- //
- if (MaxCpuIdIndex >= CPUID_EXTENDED_TOPOLOGY) {
- AsmCpuidEx (CPUID_EXTENDED_TOPOLOGY, 0, &RegEax, &RegEbx, &RegEcx, NULL);
- //
- // If CPUID.(EAX=0BH, ECX=0H):EBX returns zero and maximum input value for
- // basic CPUID information is greater than 0BH, then CPUID.0BH leaf is not
- // supported on that processor.
- //
- if ((RegEbx & 0xffff) != 0) {
- TopologyLeafSupported = TRUE;
-
- //
- // Sub-leaf index 0 (ECX= 0 as input) provides enumeration parameters to extract
- // the SMT sub-field of x2APIC ID.
- //
- LevelType = (RegEcx >> 8) & 0xff;
- ASSERT (LevelType == CPUID_EXTENDED_TOPOLOGY_LEVEL_TYPE_SMT);
- if ((RegEbx & 0xffff) > 1 ) {
- ThreadBits = RegEax & 0x1f;
- } else {
- //
- // HT is not supported
- //
- ThreadBits = 0;
- }
-
- //
- // Software must not assume any "level type" encoding
- // value to be related to any sub-leaf index, except sub-leaf 0.
- //
- SubIndex = 1;
- do {
- AsmCpuidEx (CPUID_EXTENDED_TOPOLOGY, SubIndex, &RegEax, NULL, &RegEcx, NULL);
- LevelType = (RegEcx >> 8) & 0xff;
- if (LevelType == CPUID_EXTENDED_TOPOLOGY_LEVEL_TYPE_CORE) {
- CoreBits = (RegEax & 0x1f) - ThreadBits;
- break;
- }
- SubIndex++;
- } while (LevelType != CPUID_EXTENDED_TOPOLOGY_LEVEL_TYPE_INVALID);
- }
- }
-
- if (!TopologyLeafSupported) {
- AsmCpuid (CPUID_VERSION_INFO, NULL, &RegEbx, NULL, NULL);
- MaxLogicProcessorsPerPackage = (RegEbx >> 16) & 0xff;
- if (MaxCpuIdIndex >= CPUID_CACHE_PARAMS) {
- AsmCpuidEx (CPUID_CACHE_PARAMS, 0, &RegEax, NULL, NULL, NULL);
- MaxCoresPerPackage = (RegEax >> 26) + 1;
- } else {
- //
- // Must be a single-core processor.
- //
- MaxCoresPerPackage = 1;
- }
-
- ThreadBits = (UINTN) (HighBitSet32 (MaxLogicProcessorsPerPackage / MaxCoresPerPackage - 1) + 1);
- CoreBits = (UINTN) (HighBitSet32 (MaxCoresPerPackage - 1) + 1);
- }
-
- Location->Thread = ApicId & ~((-1) << ThreadBits);
- Location->Core = (ApicId >> ThreadBits) & ~((-1) << CoreBits);
- Location->Package = (ApicId >> (ThreadBits+ CoreBits));
-}
-
-/**
- Gets processor information on the requested processor at the instant this call is made.
-
- @param[in] This A pointer to the EFI_SMM_CPU_SERVICE_PROTOCOL instance.
- @param[in] ProcessorNumber The handle number of processor.
- @param[out] ProcessorInfoBuffer A pointer to the buffer where information for
- the requested processor is deposited.
-
- @retval EFI_SUCCESS Processor information was returned.
- @retval EFI_INVALID_PARAMETER ProcessorInfoBuffer is NULL.
- @retval EFI_INVALID_PARAMETER ProcessorNumber is invalid.
- @retval EFI_NOT_FOUND The processor with the handle specified by
- ProcessorNumber does not exist in the platform.
-
-**/
-EFI_STATUS
-EFIAPI
-SmmGetProcessorInfo (
- IN CONST EFI_SMM_CPU_SERVICE_PROTOCOL *This,
- IN UINTN ProcessorNumber,
- OUT EFI_PROCESSOR_INFORMATION *ProcessorInfoBuffer
- )
-{
- //
- // Check parameter
- //
- if (ProcessorNumber >= mMaxNumberOfCpus || ProcessorInfoBuffer == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- if (gSmmCpuPrivate->ProcessorInfo[ProcessorNumber].ProcessorId == INVALID_APIC_ID) {
- return EFI_NOT_FOUND;
- }
-
- //
- // Fill in processor information
- //
- CopyMem (ProcessorInfoBuffer, &gSmmCpuPrivate->ProcessorInfo[ProcessorNumber], sizeof (EFI_PROCESSOR_INFORMATION));
- return EFI_SUCCESS;
-}
-
-/**
- This service switches the requested AP to be the BSP since the next SMI.
-
- @param[in] This A pointer to the EFI_SMM_CPU_SERVICE_PROTOCOL instance.
- @param[in] ProcessorNumber The handle number of AP that is to become the new BSP.
-
- @retval EFI_SUCCESS BSP will be switched in next SMI.
- @retval EFI_UNSUPPORTED Switching the BSP or a processor to be hot-removed is not supported.
- @retval EFI_NOT_FOUND The processor with the handle specified by ProcessorNumber does not exist.
- @retval EFI_INVALID_PARAMETER ProcessorNumber is invalid.
-**/
-EFI_STATUS
-EFIAPI
-SmmSwitchBsp (
- IN CONST EFI_SMM_CPU_SERVICE_PROTOCOL *This,
- IN UINTN ProcessorNumber
- )
-{
- //
- // Check parameter
- //
- if (ProcessorNumber >= mMaxNumberOfCpus) {
- return EFI_INVALID_PARAMETER;
- }
-
- if (gSmmCpuPrivate->ProcessorInfo[ProcessorNumber].ProcessorId == INVALID_APIC_ID) {
- return EFI_NOT_FOUND;
- }
-
- if (gSmmCpuPrivate->Operation[ProcessorNumber] != SmmCpuNone ||
- gSmst->CurrentlyExecutingCpu == ProcessorNumber) {
- return EFI_UNSUPPORTED;
- }
-
- //
- // Setting of the BSP for next SMI is pending until all SMI handlers are finished
- //
- gSmmCpuPrivate->Operation[ProcessorNumber] = SmmCpuSwitchBsp;
- return EFI_SUCCESS;
-}
-
-/**
- Notify that a processor was hot-added.
-
- @param[in] This A pointer to the EFI_SMM_CPU_SERVICE_PROTOCOL instance.
- @param[in] ProcessorId Local APIC ID of the hot-added processor.
- @param[out] ProcessorNumber The handle number of the hot-added processor.
-
- @retval EFI_SUCCESS The hot-addition of the specified processors was successfully notified.
- @retval EFI_UNSUPPORTED Hot addition of processor is not supported.
- @retval EFI_NOT_FOUND The processor with the handle specified by ProcessorNumber does not exist.
- @retval EFI_INVALID_PARAMETER ProcessorNumber is invalid.
- @retval EFI_ALREADY_STARTED The processor is already online in the system.
-**/
-EFI_STATUS
-EFIAPI
-SmmAddProcessor (
- IN CONST EFI_SMM_CPU_SERVICE_PROTOCOL *This,
- IN UINT64 ProcessorId,
- OUT UINTN *ProcessorNumber
- )
-{
- UINTN Index;
-
- if (!FeaturePcdGet (PcdCpuHotPlugSupport)) {
- return EFI_UNSUPPORTED;
- }
-
- //
- // Check parameter
- //
- if (ProcessorNumber == NULL || ProcessorId == INVALID_APIC_ID) {
- return EFI_INVALID_PARAMETER;
- }
-
- //
- // Check if the processor already exists
- //
-
- for (Index = 0; Index < mMaxNumberOfCpus; Index++) {
- if (gSmmCpuPrivate->ProcessorInfo[Index].ProcessorId == ProcessorId) {
- return EFI_ALREADY_STARTED;
- }
- }
-
- //
- // Check CPU hot plug data. The CPU RAS handler should have created the mapping
- // of the APIC ID to SMBASE.
- //
- for (Index = 0; Index < mMaxNumberOfCpus; Index++) {
- if (mCpuHotPlugData.ApicId[Index] == ProcessorId &&
- gSmmCpuPrivate->ProcessorInfo[Index].ProcessorId == INVALID_APIC_ID) {
- gSmmCpuPrivate->ProcessorInfo[Index].ProcessorId = ProcessorId;
- gSmmCpuPrivate->ProcessorInfo[Index].StatusFlag = 0;
- SmmGetProcessorLocation ((UINT32)ProcessorId, &gSmmCpuPrivate->ProcessorInfo[Index].Location);
-
- *ProcessorNumber = Index;
- gSmmCpuPrivate->Operation[Index] = SmmCpuAdd;
- return EFI_SUCCESS;
- }
- }
-
- return EFI_INVALID_PARAMETER;
-}
-
-/**
- Notify that a processor was hot-removed.
-
- @param[in] This A pointer to the EFI_SMM_CPU_SERVICE_PROTOCOL instance.
- @param[in] ProcessorNumber The handle number of the hot-added processor.
-
- @retval EFI_SUCCESS The hot-removal of the specified processors was successfully notified.
- @retval EFI_UNSUPPORTED Hot removal of processor is not supported.
- @retval EFI_UNSUPPORTED Hot removal of BSP is not supported.
- @retval EFI_UNSUPPORTED Hot removal of a processor with pending hot-plug operation is not supported.
- @retval EFI_INVALID_PARAMETER ProcessorNumber is invalid.
-**/
-EFI_STATUS
-EFIAPI
-SmmRemoveProcessor (
- IN CONST EFI_SMM_CPU_SERVICE_PROTOCOL *This,
- IN UINTN ProcessorNumber
- )
-{
- if (!FeaturePcdGet (PcdCpuHotPlugSupport)) {
- return EFI_UNSUPPORTED;
- }
-
- //
- // Check parameter
- //
- if (ProcessorNumber >= mMaxNumberOfCpus ||
- gSmmCpuPrivate->ProcessorInfo[ProcessorNumber].ProcessorId == INVALID_APIC_ID) {
- return EFI_INVALID_PARAMETER;
- }
-
- //
- // Can't remove BSP
- //
- if (ProcessorNumber == gSmmCpuPrivate->SmmCoreEntryContext.CurrentlyExecutingCpu) {
- return EFI_UNSUPPORTED;
- }
-
- if (gSmmCpuPrivate->Operation[ProcessorNumber] != SmmCpuNone) {
- return EFI_UNSUPPORTED;
- }
-
- gSmmCpuPrivate->ProcessorInfo[ProcessorNumber].ProcessorId = INVALID_APIC_ID;
- mCpuHotPlugData.ApicId[ProcessorNumber] = INVALID_APIC_ID;
-
- //
- // Removal of the processor from the CPU list is pending until all SMI handlers are finished
- //
- gSmmCpuPrivate->Operation[ProcessorNumber] = SmmCpuRemove;
- return EFI_SUCCESS;
-}
-
-/**
- This return the handle number for the calling processor.
-
- @param[in] This A pointer to the EFI_SMM_CPU_SERVICE_PROTOCOL instance.
- @param[out] ProcessorNumber The handle number of currently executing processor.
-
- @retval EFI_SUCCESS The current processor handle number was returned
- in ProcessorNumber.
- @retval EFI_INVALID_PARAMETER ProcessorNumber is NULL.
-
-**/
-EFI_STATUS
-EFIAPI
-SmmWhoAmI (
- IN CONST EFI_SMM_CPU_SERVICE_PROTOCOL *This,
- OUT UINTN *ProcessorNumber
- )
-{
- UINTN Index;
- UINT64 ApicId;
-
- //
- // Check parameter
- //
- if (ProcessorNumber == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- ApicId = GetApicId ();
-
- for (Index = 0; Index < mMaxNumberOfCpus; Index++) {
- if (gSmmCpuPrivate->ProcessorInfo[Index].ProcessorId == ApicId) {
- *ProcessorNumber = Index;
- return EFI_SUCCESS;
- }
- }
- //
- // This should not happen
- //
- ASSERT (FALSE);
- return EFI_NOT_FOUND;
-}
-
-/**
- Update the SMM CPU list per the pending operation.
-
- This function is called after return from SMI handlers.
-**/
-VOID
-SmmCpuUpdate (
- VOID
- )
-{
- UINTN Index;
-
- //
- // Handle pending BSP switch operations
- //
- for (Index = 0; Index < mMaxNumberOfCpus; Index++) {
- if (gSmmCpuPrivate->Operation[Index] == SmmCpuSwitchBsp) {
- gSmmCpuPrivate->Operation[Index] = SmmCpuNone;
- mSmmMpSyncData->SwitchBsp = TRUE;
- mSmmMpSyncData->CandidateBsp[Index] = TRUE;
- }
- }
-
- //
- // Handle pending hot-add operations
- //
- for (Index = 0; Index < mMaxNumberOfCpus; Index++) {
- if (gSmmCpuPrivate->Operation[Index] == SmmCpuAdd) {
- gSmmCpuPrivate->Operation[Index] = SmmCpuNone;
- mNumberOfCpus++;
- }
- }
-
- //
- // Handle pending hot-remove operations
- //
- for (Index = 0; Index < mMaxNumberOfCpus; Index++) {
- if (gSmmCpuPrivate->Operation[Index] == SmmCpuRemove) {
- gSmmCpuPrivate->Operation[Index] = SmmCpuNone;
- mNumberOfCpus--;
- }
- }
-}
-
-/**
- Register exception handler.
-
- @param This A pointer to the SMM_CPU_SERVICE_PROTOCOL instance.
- @param ExceptionType Defines which interrupt or exception to hook. Type EFI_EXCEPTION_TYPE and
- the valid values for this parameter are defined in EFI_DEBUG_SUPPORT_PROTOCOL
- of the UEFI 2.0 specification.
- @param InterruptHandler A pointer to a function of type EFI_CPU_INTERRUPT_HANDLER
- that is called when a processor interrupt occurs.
- If this parameter is NULL, then the handler will be uninstalled.
-
- @retval EFI_SUCCESS The handler for the processor interrupt was successfully installed or uninstalled.
- @retval EFI_ALREADY_STARTED InterruptHandler is not NULL, and a handler for InterruptType was previously installed.
- @retval EFI_INVALID_PARAMETER InterruptHandler is NULL, and a handler for InterruptType was not previously installed.
- @retval EFI_UNSUPPORTED The interrupt specified by InterruptType is not supported.
-
-**/
-EFI_STATUS
-EFIAPI
-SmmRegisterExceptionHandler (
- IN EFI_SMM_CPU_SERVICE_PROTOCOL *This,
- IN EFI_EXCEPTION_TYPE ExceptionType,
- IN EFI_CPU_INTERRUPT_HANDLER InterruptHandler
- )
-{
- return RegisterCpuInterruptHandler (ExceptionType, InterruptHandler);
-}
-
-/**
- Initialize SMM CPU Services.
-
- It installs EFI SMM CPU Services Protocol.
-
- @param ImageHandle The firmware allocated handle for the EFI image.
-
- @retval EFI_SUCCESS EFI SMM CPU Services Protocol was installed successfully.
-**/
-EFI_STATUS
-InitializeSmmCpuServices (
- IN EFI_HANDLE Handle
- )
-{
- EFI_STATUS Status;
-
- Status = gSmst->SmmInstallProtocolInterface (
- &Handle,
- &gEfiSmmCpuServiceProtocolGuid,
- EFI_NATIVE_INTERFACE,
- &mSmmCpuService
- );
- ASSERT_EFI_ERROR (Status);
- return Status;
-}
-
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