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632820d1 | 1 | /** @file\r |
2 | Functions to deal with Mem buffer\r | |
3 | \r | |
4 | Copyright (c) 2005 - 2011, Intel Corporation. All rights reserved. <BR>\r | |
5 | This program and the accompanying materials\r | |
6 | are licensed and made available under the terms and conditions of the BSD License\r | |
7 | which accompanies this distribution. The full text of the license may be found at\r | |
8 | http://opensource.org/licenses/bsd-license.php\r | |
9 | \r | |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
12 | \r | |
13 | **/\r | |
14 | \r | |
15 | #include "HexEditor.h"\r | |
16 | \r | |
17 | extern EFI_HANDLE HImageHandleBackup;\r | |
18 | \r | |
19 | extern HEFI_EDITOR_BUFFER_IMAGE HBufferImage;\r | |
20 | \r | |
21 | extern BOOLEAN HBufferImageNeedRefresh;\r | |
22 | extern BOOLEAN HBufferImageOnlyLineNeedRefresh;\r | |
23 | extern BOOLEAN HBufferImageMouseNeedRefresh;\r | |
24 | \r | |
25 | extern HEFI_EDITOR_GLOBAL_EDITOR HMainEditor;\r | |
26 | \r | |
27 | HEFI_EDITOR_MEM_IMAGE HMemImage;\r | |
28 | HEFI_EDITOR_MEM_IMAGE HMemImageBackupVar;\r | |
29 | \r | |
30 | EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL DummyPciRootBridgeIo;\r | |
31 | \r | |
32 | //\r | |
33 | // for basic initialization of HDiskImage\r | |
34 | //\r | |
35 | HEFI_EDITOR_MEM_IMAGE HMemImageConst = {\r | |
36 | NULL,\r | |
37 | 0,\r | |
38 | 0\r | |
39 | };\r | |
40 | \r | |
a1d4bfcc | 41 | /**\r |
42 | Empty function. always returns the same.\r | |
43 | \r | |
44 | @param[in] This Ignored.\r | |
45 | @param[in] Width Ignored.\r | |
46 | @param[in] Address Ignored.\r | |
47 | @param[in] Count Ignored.\r | |
48 | @param[in,out] Buffer Ignored.\r | |
49 | \r | |
50 | @retval EFI_UNSUPPORTED.\r | |
51 | **/\r | |
632820d1 | 52 | EFI_STATUS\r |
53 | DummyMemRead (\r | |
54 | IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL * This,\r | |
55 | IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH Width,\r | |
56 | IN UINT64 Address,\r | |
57 | IN UINTN Count,\r | |
58 | IN OUT VOID *Buffer\r | |
a1d4bfcc | 59 | )\r |
60 | {\r | |
61 | return EFI_UNSUPPORTED;\r | |
62 | }\r | |
63 | \r | |
64 | /**\r | |
65 | Empty function. always returns the same.\r | |
66 | \r | |
67 | @param[in] This Ignored.\r | |
68 | @param[in] Width Ignored.\r | |
69 | @param[in] Address Ignored.\r | |
70 | @param[in] Count Ignored.\r | |
71 | @param[in,out] Buffer Ignored.\r | |
632820d1 | 72 | \r |
a1d4bfcc | 73 | @retval EFI_UNSUPPORTED.\r |
74 | **/\r | |
632820d1 | 75 | EFI_STATUS\r |
76 | DummyMemWrite (\r | |
77 | IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL * This,\r | |
78 | IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH Width,\r | |
79 | IN UINT64 Address,\r | |
80 | IN UINTN Count,\r | |
81 | IN OUT VOID *Buffer\r | |
a1d4bfcc | 82 | )\r |
83 | {\r | |
84 | return EFI_UNSUPPORTED;\r | |
85 | }\r | |
86 | \r | |
87 | /**\r | |
88 | Initialization function for HDiskImage.\r | |
632820d1 | 89 | \r |
a1d4bfcc | 90 | @retval EFI_SUCCESS The operation was successful.\r |
91 | @retval EFI_LOAD_ERROR A load error occured.\r | |
92 | **/\r | |
632820d1 | 93 | EFI_STATUS\r |
94 | HMemImageInit (\r | |
95 | VOID\r | |
96 | )\r | |
632820d1 | 97 | {\r |
98 | EFI_STATUS Status;\r | |
99 | \r | |
100 | //\r | |
101 | // basically initialize the HMemImage\r | |
102 | //\r | |
103 | CopyMem (&HMemImage, &HMemImageConst, sizeof (HMemImage));\r | |
104 | \r | |
105 | Status = gBS->LocateProtocol (\r | |
106 | &gEfiPciRootBridgeIoProtocolGuid,\r | |
107 | NULL,\r | |
108 | (VOID**)&HMemImage.IoFncs\r | |
109 | );\r | |
110 | if (Status == EFI_NOT_FOUND) {\r | |
111 | //\r | |
112 | // For NT32, no EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL is available\r | |
113 | // Use Dummy PciRootBridgeIo for memory access\r | |
114 | //\r | |
115 | ZeroMem (&DummyPciRootBridgeIo, sizeof (EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL));\r | |
116 | DummyPciRootBridgeIo.Mem.Read = DummyMemRead;\r | |
117 | DummyPciRootBridgeIo.Mem.Write = DummyMemWrite;\r | |
118 | HMemImage.IoFncs = &DummyPciRootBridgeIo;\r | |
119 | Status = EFI_SUCCESS;\r | |
120 | }\r | |
121 | if (!EFI_ERROR (Status)) {\r | |
122 | return EFI_SUCCESS;\r | |
123 | } else {\r | |
124 | return EFI_LOAD_ERROR;\r | |
125 | }\r | |
126 | }\r | |
127 | \r | |
a1d4bfcc | 128 | /**\r |
129 | Backup function for HDiskImage. Only a few fields need to be backup. \r | |
130 | This is for making the Disk buffer refresh as few as possible.\r | |
131 | \r | |
132 | @retval EFI_SUCCESS The operation was successful.\r | |
133 | **/\r | |
632820d1 | 134 | EFI_STATUS\r |
135 | HMemImageBackup (\r | |
136 | VOID\r | |
137 | )\r | |
632820d1 | 138 | {\r |
139 | HMemImageBackupVar.Offset = HMemImage.Offset;\r | |
140 | HMemImageBackupVar.Size = HMemImage.Size;\r | |
141 | \r | |
142 | return EFI_SUCCESS;\r | |
143 | }\r | |
144 | \r | |
a1d4bfcc | 145 | /**\r |
146 | Set FileName field in HFileImage.\r | |
632820d1 | 147 | \r |
a1d4bfcc | 148 | @param[in] Offset The offset.\r |
149 | @param[in] Size The size.\r | |
632820d1 | 150 | \r |
a1d4bfcc | 151 | @retval EFI_SUCCESS The operation was successful.\r |
152 | @retval EFI_OUT_OF_RESOURCES A memory allocation failed.\r | |
153 | **/\r | |
632820d1 | 154 | EFI_STATUS\r |
155 | HMemImageSetMemOffsetSize (\r | |
156 | IN UINTN Offset,\r | |
157 | IN UINTN Size\r | |
158 | )\r | |
632820d1 | 159 | {\r |
160 | \r | |
161 | HMemImage.Offset = Offset;\r | |
162 | HMemImage.Size = Size;\r | |
163 | \r | |
164 | return EFI_SUCCESS;\r | |
165 | }\r | |
166 | \r | |
a1d4bfcc | 167 | /**\r |
168 | Read a disk from disk into HBufferImage.\r | |
169 | \r | |
170 | @param[in] Offset The offset.\r | |
171 | @param[in] Size The size.\r | |
172 | @param[in] Recover if is for recover, no information print.\r | |
173 | \r | |
174 | @retval EFI_LOAD_ERROR A load error occured.\r | |
175 | @retval EFI_SUCCESS The operation was successful.\r | |
176 | @retval EFI_OUT_OF_RESOURCES A memory allocation failed.\r | |
177 | **/\r | |
632820d1 | 178 | EFI_STATUS\r |
179 | HMemImageRead (\r | |
a1d4bfcc | 180 | IN UINTN Offset,\r |
181 | IN UINTN Size,\r | |
182 | IN BOOLEAN Recover\r | |
632820d1 | 183 | )\r |
632820d1 | 184 | {\r |
185 | \r | |
186 | EFI_STATUS Status;\r | |
187 | void *Buffer;\r | |
188 | CHAR16 *Str;\r | |
189 | HEFI_EDITOR_LINE *Line;\r | |
190 | \r | |
191 | EDIT_FILE_TYPE BufferTypeBackup;\r | |
192 | \r | |
193 | BufferTypeBackup = HBufferImage.BufferType;\r | |
194 | HBufferImage.BufferType = FileTypeMemBuffer;\r | |
195 | \r | |
196 | Buffer = AllocateZeroPool (Size);\r | |
197 | if (Buffer == NULL) {\r | |
198 | StatusBarSetStatusString (L"Read Memory Failed");\r | |
199 | return EFI_OUT_OF_RESOURCES;\r | |
200 | }\r | |
201 | \r | |
202 | Status = HMemImage.IoFncs->Mem.Read (\r | |
203 | HMemImage.IoFncs,\r | |
204 | EfiPciWidthUint8,\r | |
205 | Offset,\r | |
206 | Size,\r | |
207 | Buffer\r | |
208 | );\r | |
209 | \r | |
210 | if (EFI_ERROR (Status)) {\r | |
211 | FreePool (Buffer);\r | |
212 | StatusBarSetStatusString (L"Memory Specified Not Accessible");\r | |
213 | return EFI_LOAD_ERROR;\r | |
214 | }\r | |
215 | \r | |
216 | HBufferImageFree ();\r | |
217 | \r | |
218 | Status = HBufferImageBufferToList (Buffer, Size);\r | |
219 | FreePool (Buffer);\r | |
220 | \r | |
221 | if (EFI_ERROR (Status)) {\r | |
222 | StatusBarSetStatusString (L"Read Memory Failed");\r | |
223 | return Status;\r | |
224 | }\r | |
225 | \r | |
226 | Status = HMemImageSetMemOffsetSize (Offset, Size);\r | |
227 | \r | |
228 | HBufferImage.DisplayPosition.Row = 2;\r | |
229 | HBufferImage.DisplayPosition.Column = 10;\r | |
230 | \r | |
231 | HBufferImage.MousePosition.Row = 2;\r | |
232 | HBufferImage.MousePosition.Column = 10;\r | |
233 | \r | |
234 | HBufferImage.LowVisibleRow = 1;\r | |
235 | HBufferImage.HighBits = TRUE;\r | |
236 | \r | |
237 | HBufferImage.BufferPosition.Row = 1;\r | |
238 | HBufferImage.BufferPosition.Column = 1;\r | |
239 | \r | |
240 | if (!Recover) {\r | |
241 | Str = CatSPrint(NULL, L"%d Lines Read", HBufferImage.NumLines);\r | |
242 | if (Str == NULL) {\r | |
243 | StatusBarSetStatusString (L"Read Memory Failed");\r | |
244 | return EFI_OUT_OF_RESOURCES;\r | |
245 | }\r | |
246 | \r | |
247 | StatusBarSetStatusString (Str);\r | |
248 | SHELL_FREE_NON_NULL (Str);\r | |
249 | \r | |
250 | HMainEditor.SelectStart = 0;\r | |
251 | HMainEditor.SelectEnd = 0;\r | |
252 | \r | |
253 | }\r | |
254 | \r | |
255 | //\r | |
256 | // has line\r | |
257 | //\r | |
258 | if (HBufferImage.Lines != NULL) {\r | |
259 | HBufferImage.CurrentLine = CR (HBufferImage.ListHead->ForwardLink, HEFI_EDITOR_LINE, Link, EFI_EDITOR_LINE_LIST);\r | |
260 | } else {\r | |
261 | //\r | |
262 | // create a dummy line\r | |
263 | //\r | |
264 | Line = HBufferImageCreateLine ();\r | |
265 | if (Line == NULL) {\r | |
266 | StatusBarSetStatusString (L"Read Memory Failed");\r | |
267 | return EFI_OUT_OF_RESOURCES;\r | |
268 | }\r | |
269 | \r | |
270 | HBufferImage.CurrentLine = Line;\r | |
271 | }\r | |
272 | \r | |
273 | HBufferImage.Modified = FALSE;\r | |
274 | HBufferImageNeedRefresh = TRUE;\r | |
275 | HBufferImageOnlyLineNeedRefresh = FALSE;\r | |
276 | HBufferImageMouseNeedRefresh = TRUE;\r | |
277 | \r | |
278 | return EFI_SUCCESS;\r | |
279 | \r | |
280 | }\r | |
281 | \r | |
a1d4bfcc | 282 | /**\r |
283 | Save lines in HBufferImage to disk.\r | |
284 | \r | |
285 | @param[in] Offset The offset.\r | |
286 | @param[in] Size The size.\r | |
287 | \r | |
288 | @retval EFI_LOAD_ERROR A load error occured.\r | |
289 | @retval EFI_SUCCESS The operation was successful.\r | |
290 | @retval EFI_OUT_OF_RESOURCES A memory allocation failed.\r | |
291 | **/\r | |
632820d1 | 292 | EFI_STATUS\r |
293 | HMemImageSave (\r | |
294 | IN UINTN Offset,\r | |
295 | IN UINTN Size\r | |
296 | )\r | |
632820d1 | 297 | {\r |
298 | \r | |
299 | EFI_STATUS Status;\r | |
300 | VOID *Buffer;\r | |
301 | \r | |
302 | EDIT_FILE_TYPE BufferTypeBackup;\r | |
303 | \r | |
304 | //\r | |
305 | // not modified, so directly return\r | |
306 | //\r | |
307 | if (HBufferImage.Modified == FALSE) {\r | |
308 | return EFI_SUCCESS;\r | |
309 | }\r | |
310 | \r | |
311 | BufferTypeBackup = HBufferImage.BufferType;\r | |
312 | HBufferImage.BufferType = FileTypeMemBuffer;\r | |
313 | \r | |
314 | Buffer = AllocateZeroPool (Size);\r | |
315 | \r | |
316 | if (Buffer == NULL) {\r | |
317 | return EFI_OUT_OF_RESOURCES;\r | |
318 | }\r | |
319 | \r | |
320 | Status = HBufferImageListToBuffer (Buffer, Size);\r | |
321 | if (EFI_ERROR (Status)) {\r | |
322 | FreePool (Buffer);\r | |
323 | return Status;\r | |
324 | }\r | |
325 | //\r | |
326 | // write back to memory\r | |
327 | //\r | |
328 | Status = HMemImage.IoFncs->Mem.Write (\r | |
329 | HMemImage.IoFncs,\r | |
330 | EfiPciWidthUint8,\r | |
331 | Offset,\r | |
332 | Size,\r | |
333 | Buffer\r | |
334 | );\r | |
335 | \r | |
336 | FreePool (Buffer);\r | |
337 | \r | |
338 | if (EFI_ERROR (Status)) {\r | |
339 | return EFI_LOAD_ERROR;\r | |
340 | }\r | |
341 | //\r | |
342 | // now not modified\r | |
343 | //\r | |
344 | HBufferImage.Modified = FALSE;\r | |
345 | \r | |
346 | return EFI_SUCCESS;\r | |
347 | }\r | |
348 | \r | |
632820d1 | 349 | \r |