UefiCpuPkg: Move AsmRelocateApLoopStart from Mpfuncs.nasm to AmdSev.nasm

[mirror_edk2.git] / SourceLevelDebugPkg / DebugAgentDxe / DebugAgentDxe.c

/** @file\r
  Initialize Debug Agent in DXE by invoking Debug Agent Library.\r
\r
Copyright (c) 2013 - 2018, Intel Corporation. All rights reserved.<BR>\r
SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
#include <PiDxe.h>\r
#include <Guid/EventGroup.h>\r
#include <Library/UefiBootServicesTableLib.h>\r
#include <Library/DebugAgentLib.h>\r
#include <Library/UefiLib.h>\r
\r
EFI_EVENT  mExitBootServiceEvent;\r
\r
/**\r
  One notified function to disable Debug Timer interrupt when gBS->ExitBootServices() called.\r
\r
  @param[in]  Event              Pointer to this event\r
  @param[in]  Context            Event handler private data\r
\r
**/\r
VOID\r
EFIAPI\r
DisableDebugTimerExitBootService (\r
  EFI_EVENT  Event,\r
  VOID       *Context\r
  )\r
\r
{\r
  SaveAndSetDebugTimerInterrupt (FALSE);\r
}\r
\r
/**\r
  The Entry Point for Debug Agent Dxe driver.\r
\r
  It will invoke Debug Agent Library to enable source debugging feature in DXE phase.\r
\r
  @param[in] ImageHandle    The firmware allocated handle for the EFI image.\r
  @param[in] SystemTable    A pointer to the EFI System Table.\r
\r
  @retval EFI_SUCCESS       The entry point is executed successfully.\r
  @retval other             Some error occurs when initialized Debug Agent.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
DebugAgentDxeInitialize (\r
  IN EFI_HANDLE        ImageHandle,\r
  IN EFI_SYSTEM_TABLE  *SystemTable\r
  )\r
{\r
  EFI_STATUS  Status;\r
\r
  if (gST->ConOut != NULL) {\r
    Print (L"If the Debug Port is serial port, please make sure this serial port isn't connected by");\r
    Print (L" ISA Serial driver\r\n");\r
    Print (L"You could do the following steps to disconnect the serial port:\r\n");\r
    Print (L"1: Shell> drivers\r\n");\r
    Print (L"   ...\r\n");\r
    Print (L"   V  VERSION  E G G #D #C DRIVER NAME                         IMAGE NAME\r\n");\r
    Print (L"   == ======== = = = == == =================================== ===================\r\n");\r
    Print (L"   8F 0000000A B - -  1 14 PCI Bus Driver                      PciBusDxe\r\n");\r
    Print (L"   91 00000010 ? - -  -  - ATA Bus Driver                      AtaBusDxe\r\n");\r
    Print (L"   ...\r\n");\r
    Print (L"   A7 0000000A B - -  1  1 ISA Serial Driver                   IsaSerialDxe\r\n");\r
    Print (L"   ...\r\n");\r
    Print (L"2: Shell> dh -d A7\r\n");\r
    Print (L"   A7: Image(IsaSerialDxe) ImageDevPath (..9FB3-11D4-9A3A-0090273FC14D))DriverBinding");\r
    Print (L" ComponentName ComponentName2\r\n");\r
    Print (L"        Driver Name    : ISA Serial Driver\r\n");\r
    Print (L"        Image Name     : FvFile(93B80003-9FB3-11D4-9A3A-0090273FC14D)\r\n");\r
    Print (L"        Driver Version : 0000000A\r\n");\r
    Print (L"        Driver Type    : BUS\r\n");\r
    Print (L"        Configuration  : NO\r\n");\r
    Print (L"        Diagnostics    : NO\r\n");\r
    Print (L"        Managing       :\r\n");\r
    Print (L"          Ctrl[EA] : PciRoot(0x0)/Pci(0x1F,0x0)/Serial(0x0)\r\n");\r
    Print (L"            Child[EB] : PciRoot(0x0)/Pci(0x1F,0x0)/Serial(0x0)/Uart(115200,8,N,1)\r\n");\r
    Print (L"3: Shell> disconnect EA\r\n");\r
    Print (L"4: Shell> load -nc DebugAgentDxe.efi\r\n\r\n");\r
  }\r
\r
  Status = EFI_UNSUPPORTED;\r
  InitializeDebugAgent (DEBUG_AGENT_INIT_DXE_LOAD, &Status, NULL);\r
  if (EFI_ERROR (Status)) {\r
    return Status;\r
  }\r
\r
  if (gST->ConOut != NULL) {\r
    Print (L"Debug Agent: Initialized successfully!\r\n\r\n");\r
  }\r
\r
  //\r
  // Create event to disable Debug Timer interrupt when exit boot service.\r
  //\r
  Status = gBS->CreateEventEx (\r
                  EVT_NOTIFY_SIGNAL,\r
                  TPL_NOTIFY,\r
                  DisableDebugTimerExitBootService,\r
                  NULL,\r
                  &gEfiEventExitBootServicesGuid,\r
                  &mExitBootServiceEvent\r
                  );\r
  return Status;\r
}\r
\r
/**\r
  This is the unload handle for Debug Agent Dxe driver.\r
\r
  It will invoke Debug Agent Library to disable source debugging feature.\r
\r
  @param[in]  ImageHandle       The drivers' driver image.\r
\r
  @retval EFI_SUCCESS           The image is unloaded.\r
  @retval Others                Failed to unload the image.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
DebugAgentDxeUnload (\r
  IN EFI_HANDLE  ImageHandle\r
  )\r
{\r
  EFI_STATUS  Status;\r
\r
  Status = EFI_UNSUPPORTED;\r
  InitializeDebugAgent (DEBUG_AGENT_INIT_DXE_UNLOAD, &Status, NULL);\r
  switch (Status) {\r
    case EFI_ACCESS_DENIED:\r
      Print (L"Debug Agent: Host is still connected, please de-attach TARGET firstly!\r\n");\r
      break;\r
    case EFI_NOT_STARTED:\r
      Print (L"Debug Agent: It hasn't been initialized, cannot unload it!\r\n");\r
      break;\r
  }\r
\r
  return Status;\r
}\r