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2ef2b01e A |
1 | /** @file\r |
2 | Hardware IO based debug commands\r | |
3 | \r | |
60274cca HT |
4 | Copyright (c) 2007, Intel Corporation. All rights reserved.<BR>\r |
5 | Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>\r | |
50c6a4d2 | 6 | (C) Copyright 2015 Hewlett Packard Enterprise Development LP<BR>\r |
2ef2b01e | 7 | \r |
60274cca | 8 | This program and the accompanying materials\r |
2ef2b01e A |
9 | are licensed and made available under the terms and conditions of the BSD License\r |
10 | which accompanies this distribution. The full text of the license may be found at\r | |
11 | http://opensource.org/licenses/bsd-license.php\r | |
12 | \r | |
13 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
14 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
15 | \r | |
7ca9e5a4 | 16 | Commands useful for debugging hardware. IO commands separated out as not all\r |
2ef2b01e A |
17 | processor architectures support the IO command.\r |
18 | \r | |
19 | **/\r | |
20 | \r | |
21 | #include "Ebl.h"\r | |
22 | \r | |
23 | \r | |
24 | \r | |
25 | /**\r | |
26 | Read from IO space\r | |
27 | \r | |
7ca9e5a4 | 28 | Argv[0] - "ioread"[.#] # is optional width 1, 2, or 4. Default 1\r |
2ef2b01e | 29 | Argv[1] - Hex IO address\r |
2ef2b01e | 30 | \r |
a6d7123e | 31 | ior.4 0x3f8 ;Do a 32-bit IO Read from 0x3f8\r |
32 | ior 0x3f8 ;Do a 8-bit IO Read from 0x3f8\r | |
2ef2b01e A |
33 | \r |
34 | @param Argc Number of command arguments in Argv\r | |
3402aac7 | 35 | @param Argv Array of strings that represent the parsed command line.\r |
7ca9e5a4 | 36 | Argv[0] is the command name\r |
2ef2b01e A |
37 | \r |
38 | @return EFI_SUCCESS\r | |
39 | \r | |
40 | **/\r | |
41 | EFI_STATUS\r | |
50c6a4d2 | 42 | EFIAPI\r |
2ef2b01e A |
43 | EblIoReadCmd (\r |
44 | IN UINTN Argc,\r | |
45 | IN CHAR8 **Argv\r | |
46 | )\r | |
47 | {\r | |
48 | UINTN Width;\r | |
49 | UINTN Port;\r | |
50 | UINTN Data;\r | |
51 | \r | |
52 | if (Argc < 2) {\r | |
53 | return EFI_INVALID_PARAMETER;\r | |
54 | }\r | |
55 | \r | |
56 | Port = AsciiStrHexToUintn (Argv[1]);\r | |
a6d7123e | 57 | Width = WidthFromCommandName (Argv[0], 1);\r |
2ef2b01e A |
58 | \r |
59 | if (Width == 1) {\r | |
60 | Data = IoRead8 (Port);\r | |
61 | } else if (Width == 2) {\r | |
62 | Data = IoRead16 (Port);\r | |
63 | } else if (Width == 4) {\r | |
64 | Data = IoRead32 (Port);\r | |
65 | } else {\r | |
66 | return EFI_INVALID_PARAMETER;\r | |
67 | }\r | |
68 | \r | |
69 | AsciiPrint ("0x%04x = 0x%x", Port, Data);\r | |
70 | \r | |
71 | return EFI_SUCCESS;\r | |
72 | }\r | |
73 | \r | |
74 | \r | |
75 | /**\r | |
76 | Write to IO space\r | |
77 | \r | |
7ca9e5a4 | 78 | Argv[0] - "iowrite"[.#] # is optional width 1, 2, or 4. Default 1\r |
2ef2b01e A |
79 | Argv[1] - Hex IO address\r |
80 | Argv[2] - Hex data to write\r | |
2ef2b01e | 81 | \r |
a6d7123e | 82 | iow.4 0x3f8 af ;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 | |
2ef2b01e A |
84 | \r |
85 | @param Argc Number of command arguments in Argv\r | |
3402aac7 | 86 | @param Argv Array of strings that represent the parsed command line.\r |
7ca9e5a4 | 87 | Argv[0] is the command name\r |
2ef2b01e A |
88 | \r |
89 | @return EFI_SUCCESS\r | |
90 | \r | |
91 | **/\r | |
92 | EFI_STATUS\r | |
50c6a4d2 | 93 | EFIAPI\r |
2ef2b01e A |
94 | EblIoWriteCmd (\r |
95 | IN UINTN Argc,\r | |
96 | IN CHAR8 **Argv\r | |
97 | )\r | |
98 | {\r | |
99 | UINTN Width;\r | |
100 | UINTN Port;\r | |
101 | UINTN Data;\r | |
102 | \r | |
103 | if (Argc < 3) {\r | |
104 | return EFI_INVALID_PARAMETER;\r | |
105 | }\r | |
106 | \r | |
107 | Port = AsciiStrHexToUintn (Argv[1]);\r | |
108 | Data = AsciiStrHexToUintn (Argv[2]);\r | |
a6d7123e | 109 | Width = WidthFromCommandName (Argv[0], 1);\r |
3402aac7 | 110 | \r |
2ef2b01e A |
111 | if (Width == 1) {\r |
112 | IoWrite8 (Port, (UINT8)Data);\r | |
113 | } else if (Width == 2) {\r | |
114 | IoWrite16 (Port, (UINT16)Data);\r | |
115 | } else if (Width == 4) {\r | |
116 | IoWrite32 (Port, (UINT32)Data);\r | |
117 | } else {\r | |
118 | return EFI_INVALID_PARAMETER;\r | |
119 | }\r | |
120 | return EFI_SUCCESS;\r | |
121 | }\r | |
122 | \r | |
123 | \r | |
124 | GLOBAL_REMOVE_IF_UNREFERENCED const EBL_COMMAND_TABLE mCmdHwIoDebugTemplate[] =\r | |
125 | {\r | |
126 | {\r | |
127 | "ioread",\r | |
a6d7123e | 128 | "[.{1|2|4}] Port ; IO read of width byte(s) from Port",\r |
2ef2b01e A |
129 | NULL,\r |
130 | EblIoReadCmd\r | |
131 | },\r | |
132 | {\r | |
133 | "iowrite",\r | |
a6d7123e | 134 | "[.{1|2|4}] Port Data ; IO write Data of width byte(s) to Port",\r |
2ef2b01e A |
135 | NULL,\r |
136 | EblIoWriteCmd\r | |
137 | }\r | |
138 | };\r | |
139 | \r | |
140 | \r | |
141 | \r | |
142 | /**\r | |
143 | Initialize the commands in this in this file\r | |
144 | **/\r | |
145 | VOID\r | |
146 | EblInitializemdHwIoDebugCmds (\r | |
147 | VOID\r | |
148 | )\r | |
149 | {\r | |
150 | if (FeaturePcdGet (PcdEmbeddedIoEnable)) {\r | |
151 | EblAddCommands (mCmdHwIoDebugTemplate, sizeof (mCmdHwIoDebugTemplate)/sizeof (EBL_COMMAND_TABLE));\r | |
152 | }\r | |
153 | }\r | |
154 | \r |