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1 | /** @file\r |
2 | Hardware IO based debug commands\r | |
3 | \r | |
4 | Copyright (c) 2007, Intel Corporation<BR>\r | |
5 | Portions copyright (c) 2008-2009, Apple Inc. All rights reserved.\r | |
6 | \r | |
7 | All rights reserved. This program and the accompanying materials\r | |
8 | are licensed and made available under the terms and conditions of the BSD License\r | |
9 | which accompanies this distribution. The full text of the license may be found at\r | |
10 | http://opensource.org/licenses/bsd-license.php\r | |
11 | \r | |
12 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
13 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
14 | \r | |
15 | Commands useful for debugging hardware. IO commands seperated out as not all\r | |
16 | processor architectures support the IO command.\r | |
17 | \r | |
18 | **/\r | |
19 | \r | |
20 | #include "Ebl.h"\r | |
21 | \r | |
22 | \r | |
23 | \r | |
24 | /**\r | |
25 | Read from IO space\r | |
26 | \r | |
27 | Argv[0] - "ioread"\r | |
28 | Argv[1] - Hex IO address\r | |
29 | Argv[2] - IO Width [1|2|4] with a default of 1\r | |
30 | \r | |
31 | ior 0x3f8 4 ;Do a 32-bit IO Read from 0x3f8\r | |
32 | ior 0x3f8 1 ;Do a 8-bit IO Read from 0x3f8\r | |
33 | \r | |
34 | @param Argc Number of command arguments in Argv\r | |
35 | @param Argv Array of strings that represent the parsed command line. \r | |
36 | Argv[0] is the comamnd name\r | |
37 | \r | |
38 | @return EFI_SUCCESS\r | |
39 | \r | |
40 | **/\r | |
41 | EFI_STATUS\r | |
42 | EblIoReadCmd (\r | |
43 | IN UINTN Argc,\r | |
44 | IN CHAR8 **Argv\r | |
45 | )\r | |
46 | {\r | |
47 | UINTN Width;\r | |
48 | UINTN Port;\r | |
49 | UINTN Data;\r | |
50 | \r | |
51 | if (Argc < 2) {\r | |
52 | return EFI_INVALID_PARAMETER;\r | |
53 | }\r | |
54 | \r | |
55 | Port = AsciiStrHexToUintn (Argv[1]);\r | |
56 | Width = (Argc > 2) ? AsciiStrHexToUintn (Argv[2]) : 1;\r | |
57 | \r | |
58 | if (Width == 1) {\r | |
59 | Data = IoRead8 (Port);\r | |
60 | } else if (Width == 2) {\r | |
61 | Data = IoRead16 (Port);\r | |
62 | } else if (Width == 4) {\r | |
63 | Data = IoRead32 (Port);\r | |
64 | } else {\r | |
65 | return EFI_INVALID_PARAMETER;\r | |
66 | }\r | |
67 | \r | |
68 | AsciiPrint ("0x%04x = 0x%x", Port, Data);\r | |
69 | \r | |
70 | return EFI_SUCCESS;\r | |
71 | }\r | |
72 | \r | |
73 | \r | |
74 | /**\r | |
75 | Write to IO space\r | |
76 | \r | |
77 | Argv[0] - "iowrite"\r | |
78 | Argv[1] - Hex IO address\r | |
79 | Argv[2] - Hex data to write\r | |
80 | Argv[3] - IO Width [1|2|4] with a default of 1\r | |
81 | \r | |
82 | iow 0x3f8 af 4 ;Do a 32-bit IO write of af to 0x3f8\r | |
83 | iow 0x3f8 af ;Do an 8-bit IO write of af to 0x3f8\r | |
84 | \r | |
85 | @param Argc Number of command arguments in Argv\r | |
86 | @param Argv Array of strings that represent the parsed command line. \r | |
87 | Argv[0] is the comamnd name\r | |
88 | \r | |
89 | @return EFI_SUCCESS\r | |
90 | \r | |
91 | **/\r | |
92 | EFI_STATUS\r | |
93 | EblIoWriteCmd (\r | |
94 | IN UINTN Argc,\r | |
95 | IN CHAR8 **Argv\r | |
96 | )\r | |
97 | {\r | |
98 | UINTN Width;\r | |
99 | UINTN Port;\r | |
100 | UINTN Data;\r | |
101 | \r | |
102 | if (Argc < 3) {\r | |
103 | return EFI_INVALID_PARAMETER;\r | |
104 | }\r | |
105 | \r | |
106 | Port = AsciiStrHexToUintn (Argv[1]);\r | |
107 | Data = AsciiStrHexToUintn (Argv[2]);\r | |
108 | Width = (Argc > 3) ? AsciiStrHexToUintn (Argv[3]) : 1;\r | |
109 | \r | |
110 | if (Width == 1) {\r | |
111 | IoWrite8 (Port, (UINT8)Data);\r | |
112 | } else if (Width == 2) {\r | |
113 | IoWrite16 (Port, (UINT16)Data);\r | |
114 | } else if (Width == 4) {\r | |
115 | IoWrite32 (Port, (UINT32)Data);\r | |
116 | } else {\r | |
117 | return EFI_INVALID_PARAMETER;\r | |
118 | }\r | |
119 | return EFI_SUCCESS;\r | |
120 | }\r | |
121 | \r | |
122 | \r | |
123 | GLOBAL_REMOVE_IF_UNREFERENCED const EBL_COMMAND_TABLE mCmdHwIoDebugTemplate[] =\r | |
124 | {\r | |
125 | {\r | |
126 | "ioread",\r | |
127 | " Port [1|2|4]; IO read of width[1] byte(s) from Port",\r | |
128 | NULL,\r | |
129 | EblIoReadCmd\r | |
130 | },\r | |
131 | {\r | |
132 | "iowrite",\r | |
133 | " Port Data [1|2|4]; IO write Data of width[1] byte(s) to Port",\r | |
134 | NULL,\r | |
135 | EblIoWriteCmd\r | |
136 | }\r | |
137 | };\r | |
138 | \r | |
139 | \r | |
140 | \r | |
141 | /**\r | |
142 | Initialize the commands in this in this file\r | |
143 | **/\r | |
144 | VOID\r | |
145 | EblInitializemdHwIoDebugCmds (\r | |
146 | VOID\r | |
147 | )\r | |
148 | {\r | |
149 | if (FeaturePcdGet (PcdEmbeddedIoEnable)) {\r | |
150 | EblAddCommands (mCmdHwIoDebugTemplate, sizeof (mCmdHwIoDebugTemplate)/sizeof (EBL_COMMAND_TABLE));\r | |
151 | }\r | |
152 | }\r | |
153 | \r |