Ported TimerDxe driver to edk2.

[mirror_edk2.git] / EmbeddedPkg / DebugSupportDxe / DebugSupport.c

/** @file\r
\r
  Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>\r
  \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
\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
**/\r
\r
#include <Uefi.h>\r
\r
#include <Library/CacheMaintenanceLib.h>\r
#include <Library/DebugLib.h>\r
#include <Library/UefiBootServicesTableLib.h>\r
\r
#include <Protocol/Cpu.h>\r
#include <Protocol/DebugSupport.h>\r
#include <Protocol/TimerDebugSupport.h>\r
\r
EFI_STATUS\r
EFIAPI\r
DebugSupportGetMaximumProcessorIndex (\r
  IN  EFI_DEBUG_SUPPORT_PROTOCOL  *This,\r
  OUT UINTN                       *MaxProcessorIndex\r
  )\r
{\r
  if (MaxProcessorIndex == NULL) {\r
    return EFI_INVALID_PARAMETER;\r
  }\r
\r
  *MaxProcessorIndex = 0;\r
\r
  return EFI_SUCCESS;\r
}\r
\r
EFI_STATUS\r
EFIAPI\r
DebugSupportRegisterPeriodicCallback (\r
  IN  EFI_DEBUG_SUPPORT_PROTOCOL  *This,\r
  IN  UINTN                       ProcessorIndex,\r
  IN  EFI_PERIODIC_CALLBACK       PeriodicCallback\r
  )\r
{\r
  TIMER_DEBUG_SUPPORT_PROTOCOL  *Timer;\r
  EFI_STATUS                    Status;\r
\r
  Status = gBS->LocateProtocol(&gTimerDebugSupportProtocolGuid, NULL, (VOID **)&Timer);\r
  if (EFI_ERROR(Status)) {\r
    return Status;\r
  }\r
\r
  Status = Timer->RegisterPeriodicCallback(Timer, PeriodicCallback);\r
\r
  return Status;\r
}\r
\r
EFI_STATUS\r
EFIAPI\r
DebugSupportRegisterExceptionCallback (\r
  IN  EFI_DEBUG_SUPPORT_PROTOCOL  *This,\r
  IN  UINTN                       ProcessorIndex,\r
  IN  EFI_EXCEPTION_CALLBACK      ExceptionCallback,\r
  IN  EFI_EXCEPTION_TYPE          ExceptionType\r
  )\r
{\r
  EFI_CPU_ARCH_PROTOCOL *Cpu;\r
  EFI_STATUS            Status;\r
\r
  Status = gBS->LocateProtocol(&gEfiCpuArchProtocolGuid, NULL, (VOID **)&Cpu);\r
  if (EFI_ERROR(Status)) {\r
    return Status;\r
  }\r
\r
  Status = Cpu->RegisterInterruptHandler(Cpu, ExceptionType, (EFI_CPU_INTERRUPT_HANDLER)ExceptionCallback);\r
\r
  return Status;\r
}\r
\r
EFI_STATUS\r
EFIAPI\r
DebugSupportInvalidateInstructionCache (\r
  IN  EFI_DEBUG_SUPPORT_PROTOCOL  *This,\r
  IN  UINTN                       ProcessorIndex,\r
  IN  VOID                        *Start,\r
  IN  UINT64                      Length\r
  )\r
{\r
  InvalidateInstructionCacheRange(Start, Length);\r
  return EFI_SUCCESS;\r
}\r
\r
EFI_DEBUG_SUPPORT_PROTOCOL  mDebugSupport = {\r
  IsaArm,\r
  DebugSupportGetMaximumProcessorIndex,\r
  DebugSupportRegisterPeriodicCallback,\r
  DebugSupportRegisterExceptionCallback,\r
  DebugSupportInvalidateInstructionCache\r
};\r
\r
EFI_STATUS\r
DebugSupportDxeInitialize (\r
  IN EFI_HANDLE         ImageHandle,\r
  IN EFI_SYSTEM_TABLE   *SystemTable\r
  )\r
{\r
  EFI_STATUS  Status;\r
  EFI_HANDLE  Handle = NULL;\r
\r
  ASSERT_PROTOCOL_ALREADY_INSTALLED (NULL, &gEfiDebugSupportProtocolGuid);\r
  Status = gBS->InstallMultipleProtocolInterfaces(&Handle, &gEfiDebugSupportProtocolGuid, &mDebugSupport, NULL);\r
\r
  return Status;\r
}\r
\r