[Description]

[mirror_edk2.git] / Nt32Pkg / CpuRuntimeDxe / Cpu.c

/*++\r
\r
Copyright (c) 2006 - 2007, Intel Corporation\r
All rights reserved. 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
\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
\r
Module Name:\r
\r
  Cpu.c\r
\r
Abstract:\r
\r
  NT Emulation Architectural Protocol Driver as defined in Tiano.\r
  This CPU module abstracts the interrupt subsystem of a platform and\r
  the CPU-specific setjump/long pair.  Other services are not implemented\r
  in this driver.\r
\r
--*/\r
\r
\r
#include "CpuDriver.h"\r
\r
\r
CPU_ARCH_PROTOCOL_PRIVATE mCpuTemplate = {\r
  CPU_ARCH_PROT_PRIVATE_SIGNATURE,\r
  NULL,\r
  {\r
    WinNtFlushCpuDataCache,\r
    WinNtEnableInterrupt,\r
    WinNtDisableInterrupt,\r
    WinNtGetInterruptState,\r
    WinNtInit,\r
    WinNtRegisterInterruptHandler,\r
    WinNtGetTimerValue,\r
    WinNtSetMemoryAttributes,\r
    0,\r
    4\r
  },\r
  {\r
    CpuMemoryServiceRead,\r
    CpuMemoryServiceWrite,\r
    CpuIoServiceRead,\r
    CpuIoServiceWrite\r
  },\r
  0,\r
  TRUE\r
};\r
\r
#define EFI_CPU_DATA_MAXIMUM_LENGTH 0x100\r
\r
\r
\r
typedef union {\r
  EFI_CPU_DATA_RECORD *DataRecord;\r
  UINT8               *Raw;\r
} EFI_CPU_DATA_RECORD_BUFFER;\r
\r
EFI_SUBCLASS_TYPE1_HEADER mCpuDataRecordHeader = {\r
  EFI_PROCESSOR_SUBCLASS_VERSION,       // Version\r
  sizeof (EFI_SUBCLASS_TYPE1_HEADER),   // Header Size\r
  0,                                    // Instance, Initialize later\r
  EFI_SUBCLASS_INSTANCE_NON_APPLICABLE, // SubInstance\r
  0                                     // RecordType, Initialize later\r
};\r
\r
//\r
// Service routines for the driver\r
//\r
EFI_STATUS\r
EFIAPI\r
WinNtFlushCpuDataCache (\r
  IN EFI_CPU_ARCH_PROTOCOL  *This,\r
  IN EFI_PHYSICAL_ADDRESS   Start,\r
  IN UINT64                 Length,\r
  IN EFI_CPU_FLUSH_TYPE     FlushType\r
  )\r
/*++\r
\r
Routine Description:\r
\r
  This routine would provide support for flushing the CPU data cache.\r
  In the case of NT emulation environment, this flushing is not necessary and\r
  is thus not implemented.\r
\r
Arguments:\r
\r
  Pointer to CPU Architectural Protocol interface\r
  Start adddress in memory to flush\r
  Length of memory to flush\r
  Flush type\r
\r
Returns:\r
\r
  Status\r
    EFI_SUCCESS\r
\r
--*/\r
// TODO:    This - add argument and description to function comment\r
// TODO:    FlushType - add argument and description to function comment\r
// TODO:    EFI_UNSUPPORTED - add return value to function comment\r
{\r
  if (FlushType == EfiCpuFlushTypeWriteBackInvalidate) {\r
    //\r
    // Only WB flush is supported. We actually need do nothing on NT emulator\r
    // environment. Classify this to follow EFI spec\r
    //\r
    return EFI_SUCCESS;\r
  }\r
  //\r
  // Other flush types are not supported by NT emulator\r
  //\r
  return EFI_UNSUPPORTED;\r
}\r
\r
\r
EFI_STATUS\r
EFIAPI\r
WinNtEnableInterrupt (\r
  IN EFI_CPU_ARCH_PROTOCOL  *This\r
  )\r
/*++\r
\r
Routine Description:\r
\r
  This routine provides support for emulation of the interrupt enable of the\r
  the system.  For our purposes, CPU enable is just a BOOLEAN that the Timer\r
  Architectural Protocol observes in order to defer behaviour while in its\r
  emulated interrupt, or timer tick.\r
\r
Arguments:\r
\r
  Pointer to CPU Architectural Protocol interface\r
\r
Returns:\r
\r
  Status\r
    EFI_SUCCESS\r
\r
--*/\r
// TODO:    This - add argument and description to function comment\r
{\r
  CPU_ARCH_PROTOCOL_PRIVATE *Private;\r
\r
  Private                 = CPU_ARCH_PROTOCOL_PRIVATE_DATA_FROM_THIS (This);\r
  Private->InterruptState = TRUE;\r
  return EFI_SUCCESS;\r
}\r
\r
\r
EFI_STATUS\r
EFIAPI\r
WinNtDisableInterrupt (\r
  IN EFI_CPU_ARCH_PROTOCOL  *This\r
  )\r
/*++\r
\r
Routine Description:\r
\r
  This routine provides support for emulation of the interrupt disable of the\r
  the system.  For our purposes, CPU enable is just a BOOLEAN that the Timer\r
  Architectural Protocol observes in order to defer behaviour while in its\r
  emulated interrupt, or timer tick.\r
\r
Arguments:\r
\r
  Pointer to CPU Architectural Protocol interface\r
\r
Returns:\r
\r
  Status\r
    EFI_SUCCESS\r
\r
--*/\r
// TODO:    This - add argument and description to function comment\r
{\r
  CPU_ARCH_PROTOCOL_PRIVATE *Private;\r
\r
  Private                 = CPU_ARCH_PROTOCOL_PRIVATE_DATA_FROM_THIS (This);\r
  Private->InterruptState = FALSE;\r
  return EFI_SUCCESS;\r
}\r
\r
\r
EFI_STATUS\r
EFIAPI\r
WinNtGetInterruptState (\r
  IN EFI_CPU_ARCH_PROTOCOL  *This,\r
  OUT BOOLEAN               *State\r
  )\r
/*++\r
\r
Routine Description:\r
\r
  This routine provides support for emulation of the interrupt disable of the\r
  the system.  For our purposes, CPU enable is just a BOOLEAN that the Timer\r
  Architectural Protocol observes in order to defer behaviour while in its\r
  emulated interrupt, or timer tick.\r
\r
Arguments:\r
\r
  Pointer to CPU Architectural Protocol interface\r
\r
Returns:\r
\r
  Status\r
    EFI_SUCCESS\r
\r
--*/\r
// TODO:    This - add argument and description to function comment\r
// TODO:    State - add argument and description to function comment\r
// TODO:    EFI_INVALID_PARAMETER - add return value to function comment\r
{\r
  CPU_ARCH_PROTOCOL_PRIVATE *Private;\r
\r
  if (State == NULL) {\r
    return EFI_INVALID_PARAMETER;\r
  }\r
\r
  Private = CPU_ARCH_PROTOCOL_PRIVATE_DATA_FROM_THIS (This);\r
  *State  = Private->InterruptState;\r
  return EFI_SUCCESS;\r
}\r
\r
\r
EFI_STATUS\r
EFIAPI\r
WinNtInit (\r
  IN EFI_CPU_ARCH_PROTOCOL  *This,\r
  IN EFI_CPU_INIT_TYPE      InitType\r
  )\r
/*++\r
\r
Routine Description:\r
\r
  This routine would support generation of a CPU INIT.  At\r
  present, this code does not provide emulation.\r
\r
Arguments:\r
\r
  Pointer to CPU Architectural Protocol interface\r
  INIT Type\r
\r
Returns:\r
\r
  Status\r
    EFI_UNSUPPORTED - not yet implemented\r
\r
--*/\r
// TODO:    This - add argument and description to function comment\r
// TODO:    InitType - add argument and description to function comment\r
{\r
  CPU_ARCH_PROTOCOL_PRIVATE *Private;\r
\r
  Private = CPU_ARCH_PROTOCOL_PRIVATE_DATA_FROM_THIS (This);\r
  return EFI_UNSUPPORTED;\r
}\r
\r
\r
EFI_STATUS\r
EFIAPI\r
WinNtRegisterInterruptHandler (\r
  IN EFI_CPU_ARCH_PROTOCOL      *This,\r
  IN EFI_EXCEPTION_TYPE         InterruptType,\r
  IN EFI_CPU_INTERRUPT_HANDLER  InterruptHandler\r
  )\r
/*++\r
\r
Routine Description:\r
\r
  This routine would support registration of an interrupt handler.  At\r
  present, this code does not provide emulation.\r
\r
Arguments:\r
\r
  Pointer to CPU Architectural Protocol interface\r
  Pointer to interrupt handlers\r
  Interrupt type\r
\r
Returns:\r
\r
  Status\r
    EFI_UNSUPPORTED - not yet implemented\r
\r
--*/\r
// TODO:    This - add argument and description to function comment\r
// TODO:    InterruptType - add argument and description to function comment\r
// TODO:    InterruptHandler - add argument and description to function comment\r
{\r
  CPU_ARCH_PROTOCOL_PRIVATE *Private;\r
\r
  //\r
  // Do parameter checking for EFI spec conformance\r
  //\r
  if (InterruptType < 0 || InterruptType > 0xff) {\r
    return EFI_UNSUPPORTED;\r
  }\r
  //\r
  // Do nothing for Nt32 emulation\r
  //\r
  Private = CPU_ARCH_PROTOCOL_PRIVATE_DATA_FROM_THIS (This);\r
  return EFI_UNSUPPORTED;\r
}\r
\r
\r
EFI_STATUS\r
EFIAPI\r
WinNtGetTimerValue (\r
  IN  EFI_CPU_ARCH_PROTOCOL *This,\r
  IN  UINT32                TimerIndex,\r
  OUT UINT64                *TimerValue,\r
  OUT UINT64                *TimerPeriod OPTIONAL\r
  )\r
/*++\r
\r
Routine Description:\r
\r
  This routine would support querying of an on-CPU timer.  At present,\r
  this code does not provide timer emulation.\r
\r
Arguments:\r
\r
  This        - Pointer to CPU Architectural Protocol interface\r
  TimerIndex  - Index of given CPU timer\r
  TimerValue  - Output of the timer\r
  TimerPeriod - Output of the timer period\r
\r
Returns:\r
\r
  EFI_UNSUPPORTED       - not yet implemented\r
  EFI_INVALID_PARAMETER - TimeValue is NULL\r
\r
--*/\r
{\r
  if (TimerValue == NULL) {\r
    return EFI_INVALID_PARAMETER;\r
  }\r
\r
  //\r
  // No timer supported\r
  //\r
  return EFI_UNSUPPORTED;\r
}\r
\r
\r
EFI_STATUS\r
EFIAPI\r
WinNtSetMemoryAttributes (\r
  IN EFI_CPU_ARCH_PROTOCOL  *This,\r
  IN EFI_PHYSICAL_ADDRESS   BaseAddress,\r
  IN UINT64                 Length,\r
  IN UINT64                 Attributes\r
  )\r
/*++\r
\r
Routine Description:\r
\r
  This routine would support querying of an on-CPU timer.  At present,\r
  this code does not provide timer emulation.\r
\r
Arguments:\r
\r
  Pointer to CPU Architectural Protocol interface\r
  Start address of memory region\r
  The size in bytes of the memory region\r
  The bit mask of attributes to set for the memory region\r
\r
Returns:\r
\r
  Status\r
    EFI_UNSUPPORTED - not yet implemented\r
\r
--*/\r
// TODO:    This - add argument and description to function comment\r
// TODO:    BaseAddress - add argument and description to function comment\r
// TODO:    Length - add argument and description to function comment\r
// TODO:    Attributes - add argument and description to function comment\r
// TODO:    EFI_INVALID_PARAMETER - add return value to function comment\r
{\r
  CPU_ARCH_PROTOCOL_PRIVATE *Private;\r
\r
  //\r
  // Check for invalid parameter for Spec conformance\r
  //\r
  if (Length == 0) {\r
    return EFI_INVALID_PARAMETER;\r
  }\r
\r
  //\r
  // Do nothing for Nt32 emulation\r
  //\r
  Private = CPU_ARCH_PROTOCOL_PRIVATE_DATA_FROM_THIS (This);\r
  return EFI_UNSUPPORTED;\r
}\r
\r
\r
VOID\r
CpuUpdateDataHub (\r
  VOID\r
  )\r
/*++\r
\r
Routine Description:\r
  This function will log processor version and frequency data to data hub.\r
\r
Arguments:\r
  Event        - Event whose notification function is being invoked.\r
  Context      - Pointer to the notification function's context.\r
\r
Returns:\r
  None.\r
\r
--*/\r
{\r
  EFI_STATUS                  Status;\r
  EFI_CPU_DATA_RECORD_BUFFER  RecordBuffer;\r
  UINT32                      HeaderSize;\r
  UINT32                      TotalSize;\r
  EFI_DATA_HUB_PROTOCOL       *DataHub;\r
  EFI_HII_HANDLE              HiiHandle;\r
\r
  //\r
  // Locate DataHub protocol.\r
  //\r
  Status = gBS->LocateProtocol (&gEfiDataHubProtocolGuid, NULL, &DataHub);\r
  if (EFI_ERROR (Status)) {\r
    return;\r
  }\r
\r
  //\r
  // Initialize data record header\r
  //\r
  mCpuDataRecordHeader.Instance = 1;\r
  HeaderSize                    = sizeof (EFI_SUBCLASS_TYPE1_HEADER);\r
\r
  RecordBuffer.Raw              = AllocatePool (HeaderSize + EFI_CPU_DATA_MAXIMUM_LENGTH);\r
  if (RecordBuffer.Raw == NULL) {\r
    return ;\r
  }\r
\r
  //\r
  // Initialize strings to HII database\r
  //\r
  HiiLibAddPackages (1, &gEfiProcessorProducerGuid, NULL, &HiiHandle, CpuStrings);\r
  \r
\r
  CopyMem (RecordBuffer.Raw, &mCpuDataRecordHeader, HeaderSize);\r
\r
\r
  RecordBuffer.DataRecord->DataRecordHeader.RecordType      = ProcessorVersionRecordType;\r
  RecordBuffer.DataRecord->VariableRecord.ProcessorVersion  = STRING_TOKEN (STR_PROCESSOR_VERSION);\r
  TotalSize = HeaderSize + sizeof (EFI_PROCESSOR_VERSION_DATA);\r
\r
  Status = DataHub->LogData (\r
                      DataHub,\r
                      &gEfiProcessorSubClassGuid,\r
                      &gEfiProcessorProducerGuid,\r
                      EFI_DATA_RECORD_CLASS_DATA,\r
                      RecordBuffer.Raw,\r
                      TotalSize\r
                      );\r
\r
  //\r
  // Store CPU frequency data record to data hub - It's an emulator so make up a value\r
  //\r
  RecordBuffer.DataRecord->DataRecordHeader.RecordType                    = ProcessorCoreFrequencyRecordType;\r
  RecordBuffer.DataRecord->VariableRecord.ProcessorCoreFrequency.Value    = 1234;\r
  RecordBuffer.DataRecord->VariableRecord.ProcessorCoreFrequency.Exponent = 6;\r
  TotalSize = HeaderSize + sizeof (EFI_PROCESSOR_CORE_FREQUENCY_DATA);\r
\r
  Status = DataHub->LogData (\r
                      DataHub,\r
                      &gEfiProcessorSubClassGuid,\r
                      &gEfiProcessorProducerGuid,\r
                      EFI_DATA_RECORD_CLASS_DATA,\r
                      RecordBuffer.Raw,\r
                      TotalSize\r
                      );\r
\r
  FreePool (RecordBuffer.Raw);\r
}\r
\r
\r
\r
EFI_STATUS\r
EFIAPI\r
InitializeCpu (\r
  IN EFI_HANDLE        ImageHandle,\r
  IN EFI_SYSTEM_TABLE  *SystemTable\r
  )\r
/*++\r
\r
Routine Description:\r
\r
  Initialize the state information for the CPU Architectural Protocol\r
\r
Arguments:\r
\r
  ImageHandle of the loaded driver\r
  Pointer to the System Table\r
\r
Returns:\r
\r
  Status\r
\r
  EFI_SUCCESS           - protocol instance can be published\r
  EFI_OUT_OF_RESOURCES  - cannot allocate protocol data structure\r
  EFI_DEVICE_ERROR      - cannot create the thread\r
\r
--*/\r
{\r
  EFI_STATUS                Status;\r
\r
  CpuUpdateDataHub ();\r
\r
  Status = gBS->InstallMultipleProtocolInterfaces (\r
                  &mCpuTemplate.Handle,\r
                  &gEfiCpuArchProtocolGuid,   &mCpuTemplate.Cpu,\r
                  &gEfiCpuIoProtocolGuid,     &mCpuTemplate.CpuIo,\r
                  NULL\r
                  );\r
  ASSERT_EFI_ERROR (Status);\r
\r
  return Status;\r
}\r
\r
\r