mirror of https://github.com/acidanthera/audk.git
144 lines
5.2 KiB
C
144 lines
5.2 KiB
C
/** @file
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Initialize Debug Agent in DXE by invoking Debug Agent Library.
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Copyright (c) 2013 - 2015, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include <PiDxe.h>
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#include <Guid/EventGroup.h>
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#include <Library/UefiBootServicesTableLib.h>
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#include <Library/DebugAgentLib.h>
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#include <Library/UefiLib.h>
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EFI_EVENT mExitBootServiceEvent;
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/**
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One notified function to disable Debug Timer interrupt when gBS->ExitBootServices() called.
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@param[in] Event Pointer to this event
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@param[in] Context Event handler private data
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**/
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VOID
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EFIAPI
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DisableDebugTimerExitBootService (
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EFI_EVENT Event,
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VOID *Context
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)
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{
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SaveAndSetDebugTimerInterrupt (FALSE);
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}
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/**
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The Entry Point for Debug Agent Dxe driver.
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It will invoke Debug Agent Library to enable source debugging feature in DXE phase.
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@param[in] ImageHandle The firmware allocated handle for the EFI image.
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@param[in] SystemTable A pointer to the EFI System Table.
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@retval EFI_SUCCESS The entry point is executed successfully.
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@retval other Some error occurs when initialzed Debug Agent.
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**/
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EFI_STATUS
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EFIAPI
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DebugAgentDxeInitialize(
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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)
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{
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EFI_STATUS Status;
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if (gST->ConOut != NULL) {
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Print (L"If the Debug Port is serial port, please make sure this serial port isn't connected by");
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Print (L" ISA Serial driver\r\n");
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Print (L"You could do the following steps to disconnect the serial port:\r\n");
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Print (L"1: Shell> drivers\r\n");
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Print (L" ...\r\n");
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Print (L" V VERSION E G G #D #C DRIVER NAME IMAGE NAME\r\n");
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Print (L" == ======== = = = == == =================================== ===================\r\n");
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Print (L" 8F 0000000A B - - 1 14 PCI Bus Driver PciBusDxe\r\n");
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Print (L" 91 00000010 ? - - - - ATA Bus Driver AtaBusDxe\r\n");
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Print (L" ...\r\n");
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Print (L" A7 0000000A B - - 1 1 ISA Serial Driver IsaSerialDxe\r\n");
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Print (L" ...\r\n");
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Print (L"2: Shell> dh -d A7\r\n");
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Print (L" A7: Image(IsaSerialDxe) ImageDevPath (..9FB3-11D4-9A3A-0090273FC14D))DriverBinding");
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Print (L" ComponentName ComponentName2\r\n");
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Print (L" Driver Name : ISA Serial Driver\r\n");
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Print (L" Image Name : FvFile(93B80003-9FB3-11D4-9A3A-0090273FC14D)\r\n");
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Print (L" Driver Version : 0000000A\r\n");
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Print (L" Driver Type : BUS\r\n");
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Print (L" Configuration : NO\r\n");
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Print (L" Diagnostics : NO\r\n");
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Print (L" Managing :\r\n");
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Print (L" Ctrl[EA] : PciRoot(0x0)/Pci(0x1F,0x0)/Serial(0x0)\r\n");
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Print (L" Child[EB] : PciRoot(0x0)/Pci(0x1F,0x0)/Serial(0x0)/Uart(115200,8,N,1)\r\n");
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Print (L"3: Shell> disconnect EA\r\n");
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Print (L"4: Shell> load -nc DebugAgentDxe.efi\r\n\r\n");
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}
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Status = EFI_UNSUPPORTED;
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InitializeDebugAgent (DEBUG_AGENT_INIT_DXE_LOAD, &Status, NULL);
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if (EFI_ERROR (Status)) {
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return Status;
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}
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if (gST->ConOut != NULL) {
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Print (L"Debug Agent: Initialized successfully!\r\n\r\n");
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}
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//
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// Create event to disable Debug Timer interrupt when exit boot service.
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//
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Status = gBS->CreateEventEx (
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EVT_NOTIFY_SIGNAL,
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TPL_NOTIFY,
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DisableDebugTimerExitBootService,
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NULL,
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&gEfiEventExitBootServicesGuid,
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&mExitBootServiceEvent
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);
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return Status;
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}
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/**
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This is the unload handle for Debug Agent Dxe driver.
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It will invoke Debug Agent Library to disable source debugging feature.
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@param[in] ImageHandle The drivers' driver image.
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@retval EFI_SUCCESS The image is unloaded.
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@retval Others Failed to unload the image.
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**/
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EFI_STATUS
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EFIAPI
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DebugAgentDxeUnload (
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IN EFI_HANDLE ImageHandle
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)
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{
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EFI_STATUS Status;
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Status = EFI_UNSUPPORTED;
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InitializeDebugAgent (DEBUG_AGENT_INIT_DXE_UNLOAD, &Status, NULL);
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switch (Status) {
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case EFI_ACCESS_DENIED:
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Print (L"Debug Agent: Host is still connected, please de-attach TARGET firstly!\r\n");
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break;
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case EFI_NOT_STARTED:
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Print (L"Debug Agent: It hasn't been initialized, cannot unload it!\r\n");
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break;
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}
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return Status;
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}
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