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1 | /** @file |
2 | ||
3 | Copyright (c) 2008-2009, Apple Inc. All rights reserved. | |
4 | ||
5 | All rights reserved. This program and the accompanying materials | |
6 | are licensed and made available under the terms and conditions of the BSD License | |
7 | which accompanies this distribution. The full text of the license may be found at | |
8 | http://opensource.org/licenses/bsd-license.php | |
9 | ||
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. | |
12 | ||
13 | **/ | |
14 | #include <Uefi.h> | |
15 | ||
16 | #include <Library/BaseLib.h> | |
17 | #include <Library/SemihostLib.h> | |
18 | ||
19 | #include "SemihostPrivate.h" | |
20 | ||
21 | BOOLEAN | |
22 | SemihostConnectionSupported ( | |
23 | VOID | |
24 | ) | |
25 | { | |
26 | return SEMIHOST_SUPPORTED; | |
27 | } | |
28 | ||
29 | EFI_STATUS | |
30 | SemihostFileOpen ( | |
31 | IN CHAR8 *FileName, | |
32 | IN UINT32 Mode, | |
33 | OUT UINT32 *FileHandle | |
34 | ) | |
35 | { | |
36 | SEMIHOST_FILE_OPEN_BLOCK OpenBlock; | |
37 | INT32 Result; | |
38 | ||
39 | if (FileHandle == NULL) | |
40 | return EFI_INVALID_PARAMETER; | |
41 | ||
42 | OpenBlock.FileName = FileName; | |
43 | OpenBlock.Mode = Mode; | |
44 | OpenBlock.NameLength = AsciiStrLen(FileName); | |
45 | ||
46 | Result = Semihost_SYS_OPEN(&OpenBlock); | |
47 | ||
48 | if (Result == -1) | |
49 | { | |
50 | return EFI_NOT_FOUND; | |
51 | } | |
52 | else | |
53 | { | |
54 | *FileHandle = Result; | |
55 | return EFI_SUCCESS; | |
56 | } | |
57 | } | |
58 | ||
59 | EFI_STATUS | |
60 | SemihostFileSeek ( | |
61 | IN UINT32 FileHandle, | |
62 | IN UINT32 Offset | |
63 | ) | |
64 | { | |
65 | SEMIHOST_FILE_SEEK_BLOCK SeekBlock; | |
66 | INT32 Result; | |
67 | ||
68 | SeekBlock.Handle = FileHandle; | |
69 | SeekBlock.Location = Offset; | |
70 | ||
71 | Result = Semihost_SYS_SEEK(&SeekBlock); | |
72 | ||
73 | if (Result == 0) | |
74 | return EFI_SUCCESS; | |
75 | else | |
76 | return EFI_ABORTED; | |
77 | } | |
78 | ||
79 | EFI_STATUS | |
80 | SemihostFileRead ( | |
81 | IN UINT32 FileHandle, | |
82 | IN OUT UINT32 *Length, | |
83 | OUT VOID *Buffer | |
84 | ) | |
85 | { | |
86 | SEMIHOST_FILE_READ_WRITE_BLOCK ReadBlock; | |
87 | UINT32 Result; | |
88 | ||
89 | if ((Length == NULL) || (Buffer == NULL)) | |
90 | return EFI_INVALID_PARAMETER; | |
91 | ||
92 | ReadBlock.Handle = FileHandle; | |
93 | ReadBlock.Buffer = Buffer; | |
94 | ReadBlock.Length = *Length; | |
95 | ||
96 | Result = Semihost_SYS_READ(&ReadBlock); | |
97 | ||
98 | if (Result == *Length) | |
99 | { | |
100 | return EFI_ABORTED; | |
101 | } | |
102 | else | |
103 | { | |
104 | *Length -= Result; | |
105 | return EFI_SUCCESS; | |
106 | } | |
107 | } | |
108 | ||
109 | EFI_STATUS | |
110 | SemihostFileWrite ( | |
111 | IN UINT32 FileHandle, | |
112 | IN OUT UINT32 *Length, | |
113 | IN VOID *Buffer | |
114 | ) | |
115 | { | |
116 | SEMIHOST_FILE_READ_WRITE_BLOCK WriteBlock; | |
117 | ||
118 | if ((Length == NULL) || (Buffer == NULL)) | |
119 | return EFI_INVALID_PARAMETER; | |
120 | ||
121 | WriteBlock.Handle = FileHandle; | |
122 | WriteBlock.Buffer = Buffer; | |
123 | WriteBlock.Length = *Length; | |
124 | ||
125 | *Length = Semihost_SYS_WRITE(&WriteBlock); | |
126 | ||
127 | return EFI_SUCCESS; | |
128 | } | |
129 | ||
130 | EFI_STATUS | |
131 | SemihostFileClose ( | |
132 | IN UINT32 FileHandle | |
133 | ) | |
134 | { | |
135 | INT32 Result = Semihost_SYS_CLOSE(&FileHandle); | |
136 | ||
137 | if (Result == -1) | |
138 | return EFI_INVALID_PARAMETER; | |
139 | else | |
140 | return EFI_SUCCESS; | |
141 | } | |
142 | ||
143 | EFI_STATUS | |
144 | SemihostFileLength ( | |
145 | IN UINT32 FileHandle, | |
146 | OUT UINT32 *Length | |
147 | ) | |
148 | { | |
149 | INT32 Result; | |
150 | ||
151 | if (Length == NULL) | |
152 | return EFI_INVALID_PARAMETER; | |
153 | ||
154 | Result = Semihost_SYS_FLEN(&FileHandle); | |
155 | ||
156 | if (Result == -1) | |
157 | { | |
158 | return EFI_ABORTED; | |
159 | } | |
160 | else | |
161 | { | |
162 | *Length = Result; | |
163 | return EFI_SUCCESS; | |
164 | } | |
165 | } | |
166 | ||
167 | EFI_STATUS | |
168 | SemihostFileRemove ( | |
169 | IN CHAR8 *FileName | |
170 | ) | |
171 | { | |
172 | SEMIHOST_FILE_REMOVE_BLOCK RemoveBlock; | |
173 | UINT32 Result; | |
174 | ||
175 | RemoveBlock.FileName = FileName; | |
176 | RemoveBlock.NameLength = AsciiStrLen(FileName); | |
177 | ||
178 | Result = Semihost_SYS_REMOVE(&RemoveBlock); | |
179 | ||
180 | if (Result == 0) | |
181 | return EFI_SUCCESS; | |
182 | else | |
183 | return EFI_ABORTED; | |
184 | } | |
185 | ||
186 | CHAR8 | |
187 | SemihostReadCharacter ( | |
188 | VOID | |
189 | ) | |
190 | { | |
191 | return Semihost_SYS_READC(); | |
192 | } | |
193 | ||
194 | VOID | |
195 | SemihostWriteCharacter ( | |
196 | IN CHAR8 Character | |
197 | ) | |
198 | { | |
199 | Semihost_SYS_WRITEC(&Character); | |
200 | } | |
201 | ||
202 | VOID | |
203 | SemihostWriteString ( | |
204 | IN CHAR8 *String | |
205 | ) | |
206 | { | |
207 | Semihost_SYS_WRITE0(String); | |
208 | } | |
209 | ||
210 | UINT32 | |
211 | SemihostSystem ( | |
212 | IN CHAR8 *CommandLine | |
213 | ) | |
214 | { | |
215 | SEMIHOST_SYSTEM_BLOCK SystemBlock; | |
216 | ||
217 | SystemBlock.CommandLine = CommandLine; | |
218 | SystemBlock.CommandLength = AsciiStrLen(CommandLine); | |
219 | ||
220 | return Semihost_SYS_SYSTEM(&SystemBlock); | |
221 | } |