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1 | /** @file\r |
2 | Base Debug library instance for QEMU debug port.\r | |
3 | It uses PrintLib to send debug messages to a fixed I/O port.\r | |
4 | \r | |
5 | Copyright (c) 2017, Red Hat, Inc.<BR>\r | |
6 | This program and the accompanying materials\r | |
7 | are licensed and made available under the terms and conditions of the BSD License\r | |
8 | which accompanies this distribution. The full text of the license may be found at\r | |
9 | http://opensource.org/licenses/bsd-license.php.\r | |
10 | \r | |
11 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
12 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
13 | \r | |
14 | **/\r | |
15 | \r | |
16 | #ifndef __DEBUG_IO_PORT_DETECT_H__\r | |
17 | #define __DEBUG_IO_PORT_DETECT_H__\r | |
18 | \r | |
19 | #include <Base.h>\r | |
20 | \r | |
21 | //\r | |
22 | // The constant value that is read from the debug I/O port\r | |
23 | //\r | |
24 | #define BOCHS_DEBUG_PORT_MAGIC 0xE9\r | |
25 | \r | |
26 | \r | |
27 | /**\r | |
28 | Helper function to return whether the virtual machine has a debug I/O port.\r | |
29 | PlatformDebugLibIoPortFound can call this function directly or cache the\r | |
30 | result.\r | |
31 | \r | |
32 | @retval TRUE if the debug I/O port device was detected.\r | |
33 | @retval FALSE otherwise\r | |
34 | \r | |
35 | **/\r | |
36 | BOOLEAN\r | |
37 | EFIAPI\r | |
38 | PlatformDebugLibIoPortDetect (\r | |
39 | VOID\r | |
40 | );\r | |
41 | \r | |
42 | /**\r | |
43 | Return whether the virtual machine has a debug I/O port. DebugLib.c\r | |
44 | calls this function instead of PlatformDebugLibIoPortDetect, to allow\r | |
45 | caching if possible.\r | |
46 | \r | |
47 | @retval TRUE if the debug I/O port device was detected.\r | |
48 | @retval FALSE otherwise\r | |
49 | \r | |
50 | **/\r | |
51 | BOOLEAN\r | |
52 | EFIAPI\r | |
53 | PlatformDebugLibIoPortFound (\r | |
54 | VOID\r | |
55 | );\r | |
56 | \r | |
57 | #endif\r |