| /** @file | |
| Detection code for QEMU debug port. | |
| Copyright (c) 2006 - 2019, Intel Corporation. All rights reserved.<BR> | |
| Copyright (c) 2012, Red Hat, Inc.<BR> | |
| Copyright (c) 2020, Citrix Systems, Inc. | |
| SPDX-License-Identifier: BSD-2-Clause-Patent | |
| **/ | |
| #include <Library/IoLib.h> | |
| #include <Library/PcdLib.h> | |
| #include "DebugLibDetect.h" | |
| // | |
| // The constant value that is read from the debug I/O port | |
| // | |
| #define BOCHS_DEBUG_PORT_MAGIC 0xE9 | |
| /** | |
| Return the result of detecting the debug I/O port device. | |
| @retval TRUE if the debug I/O port device was detected. | |
| @retval FALSE otherwise | |
| **/ | |
| BOOLEAN | |
| EFIAPI | |
| PlatformDebugLibIoPortDetect ( | |
| VOID | |
| ) | |
| { | |
| return IoRead8 (PcdGet16 (PcdDebugIoPort)) == BOCHS_DEBUG_PORT_MAGIC; | |
| } |