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