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7bc232b2 | 1 | /** @file\r |
eceb3a4c LG |
2 | Base Debug library instance base on Serial Port library.\r |
3 | It uses PrintLib to send debug messages to serial port device.\r | |
9095d37b LG |
4 | \r |
5 | NOTE: If the Serial Port library enables hardware flow control, then a call\r | |
6 | to DebugPrint() or DebugAssert() may hang if writes to the serial port are\r | |
ccc96db9 | 7 | being blocked. This may occur if a key(s) are pressed in a terminal emulator\r |
9095d37b | 8 | used to monitor the DEBUG() and ASSERT() messages.\r |
7bc232b2 | 9 | \r |
f1320287 | 10 | Copyright (c) 2006 - 2019, Intel Corporation. All rights reserved.<BR>\r |
9344f092 | 11 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
7bc232b2 LG |
12 | \r |
13 | **/\r | |
14 | \r | |
0eeb6d1f | 15 | #include <Base.h>\r |
859b72fa A |
16 | #include <Library/DebugLib.h>\r |
17 | #include <Library/BaseLib.h>\r | |
18 | #include <Library/PrintLib.h>\r | |
19 | #include <Library/PcdLib.h>\r | |
20 | #include <Library/BaseMemoryLib.h>\r | |
21 | #include <Library/SerialPortLib.h>\r | |
2891fc8b | 22 | #include <Library/DebugPrintErrorLevelLib.h>\r |
859b72fa | 23 | \r |
7bc232b2 | 24 | //\r |
9095d37b | 25 | // Define the maximum debug and assert message length that this library supports\r |
7bc232b2 LG |
26 | //\r |
27 | #define MAX_DEBUG_MESSAGE_LENGTH 0x100\r | |
28 | \r | |
f1320287 BB |
29 | //\r |
30 | // VA_LIST can not initialize to NULL for all compiler, so we use this to\r | |
31 | // indicate a null VA_LIST\r | |
32 | //\r | |
33 | VA_LIST mVaListNull;\r | |
34 | \r | |
ccc96db9 | 35 | /**\r |
36 | The constructor function initialize the Serial Port Library\r | |
37 | \r | |
38 | @retval EFI_SUCCESS The constructor always returns RETURN_SUCCESS.\r | |
39 | \r | |
40 | **/\r | |
41 | RETURN_STATUS\r | |
42 | EFIAPI\r | |
43 | BaseDebugLibSerialPortConstructor (\r | |
44 | VOID\r | |
45 | )\r | |
46 | {\r | |
47 | return SerialPortInitialize ();\r | |
48 | }\r | |
49 | \r | |
7bc232b2 | 50 | /**\r |
7bc232b2 LG |
51 | Prints a debug message to the debug output device if the specified error level is enabled.\r |
52 | \r | |
9095d37b LG |
53 | If any bit in ErrorLevel is also set in DebugPrintErrorLevelLib function\r |
54 | GetDebugPrintErrorLevel (), then print the message specified by Format and the\r | |
2891fc8b | 55 | associated variable argument list to the debug output device.\r |
7bc232b2 LG |
56 | \r |
57 | If Format is NULL, then ASSERT().\r | |
58 | \r | |
59 | @param ErrorLevel The error level of the debug message.\r | |
60 | @param Format Format string for the debug message to print.\r | |
9095d37b | 61 | @param ... Variable argument list whose contents are accessed\r |
285010e7 | 62 | based on the format string specified by Format.\r |
7bc232b2 LG |
63 | \r |
64 | **/\r | |
65 | VOID\r | |
66 | EFIAPI\r | |
67 | DebugPrint (\r | |
68 | IN UINTN ErrorLevel,\r | |
69 | IN CONST CHAR8 *Format,\r | |
70 | ...\r | |
71 | )\r | |
72 | {\r | |
7bc232b2 LG |
73 | VA_LIST Marker;\r |
74 | \r | |
f1320287 BB |
75 | VA_START (Marker, Format);\r |
76 | DebugVPrint (ErrorLevel, Format, Marker);\r | |
77 | VA_END (Marker);\r | |
78 | }\r | |
79 | \r | |
80 | \r | |
81 | /**\r | |
82 | Prints a debug message to the debug output device if the specified\r | |
83 | error level is enabled base on Null-terminated format string and a\r | |
84 | VA_LIST argument list or a BASE_LIST argument list.\r | |
85 | \r | |
86 | If any bit in ErrorLevel is also set in DebugPrintErrorLevelLib function\r | |
87 | GetDebugPrintErrorLevel (), then print the message specified by Format and\r | |
88 | the associated variable argument list to the debug output device.\r | |
89 | \r | |
90 | If Format is NULL, then ASSERT().\r | |
91 | \r | |
92 | @param ErrorLevel The error level of the debug message.\r | |
93 | @param Format Format string for the debug message to print.\r | |
94 | @param VaListMarker VA_LIST marker for the variable argument list.\r | |
95 | @param BaseListMarker BASE_LIST marker for the variable argument list.\r | |
96 | \r | |
97 | **/\r | |
98 | VOID\r | |
99 | DebugPrintMarker (\r | |
100 | IN UINTN ErrorLevel,\r | |
101 | IN CONST CHAR8 *Format,\r | |
102 | IN VA_LIST VaListMarker,\r | |
103 | IN BASE_LIST BaseListMarker\r | |
104 | )\r | |
105 | {\r | |
106 | CHAR8 Buffer[MAX_DEBUG_MESSAGE_LENGTH];\r | |
107 | \r | |
7bc232b2 LG |
108 | //\r |
109 | // If Format is NULL, then ASSERT().\r | |
110 | //\r | |
111 | ASSERT (Format != NULL);\r | |
112 | \r | |
113 | //\r | |
114 | // Check driver debug mask value and global mask\r | |
115 | //\r | |
2891fc8b | 116 | if ((ErrorLevel & GetDebugPrintErrorLevel ()) == 0) {\r |
7bc232b2 LG |
117 | return;\r |
118 | }\r | |
119 | \r | |
120 | //\r | |
121 | // Convert the DEBUG() message to an ASCII String\r | |
122 | //\r | |
f1320287 BB |
123 | if (BaseListMarker == NULL) {\r |
124 | AsciiVSPrint (Buffer, sizeof (Buffer), Format, VaListMarker);\r | |
125 | } else {\r | |
126 | AsciiBSPrint (Buffer, sizeof (Buffer), Format, BaseListMarker);\r | |
127 | }\r | |
7bc232b2 LG |
128 | \r |
129 | //\r | |
9095d37b | 130 | // Send the print string to a Serial Port\r |
7bc232b2 | 131 | //\r |
ccc96db9 | 132 | SerialPortWrite ((UINT8 *)Buffer, AsciiStrLen (Buffer));\r |
7bc232b2 LG |
133 | }\r |
134 | \r | |
135 | \r | |
f1320287 BB |
136 | /**\r |
137 | Prints a debug message to the debug output device if the specified\r | |
138 | error level is enabled.\r | |
139 | \r | |
140 | If any bit in ErrorLevel is also set in DebugPrintErrorLevelLib function\r | |
141 | GetDebugPrintErrorLevel (), then print the message specified by Format and\r | |
142 | the associated variable argument list to the debug output device.\r | |
143 | \r | |
144 | If Format is NULL, then ASSERT().\r | |
145 | \r | |
146 | @param ErrorLevel The error level of the debug message.\r | |
147 | @param Format Format string for the debug message to print.\r | |
148 | @param VaListMarker VA_LIST marker for the variable argument list.\r | |
149 | \r | |
150 | **/\r | |
151 | VOID\r | |
152 | EFIAPI\r | |
153 | DebugVPrint (\r | |
154 | IN UINTN ErrorLevel,\r | |
155 | IN CONST CHAR8 *Format,\r | |
156 | IN VA_LIST VaListMarker\r | |
157 | )\r | |
158 | {\r | |
159 | DebugPrintMarker (ErrorLevel, Format, VaListMarker, NULL);\r | |
160 | }\r | |
161 | \r | |
162 | \r | |
163 | /**\r | |
164 | Prints a debug message to the debug output device if the specified\r | |
165 | error level is enabled.\r | |
166 | This function use BASE_LIST which would provide a more compatible\r | |
167 | service than VA_LIST.\r | |
168 | \r | |
169 | If any bit in ErrorLevel is also set in DebugPrintErrorLevelLib function\r | |
170 | GetDebugPrintErrorLevel (), then print the message specified by Format and\r | |
171 | the associated variable argument list to the debug output device.\r | |
172 | \r | |
173 | If Format is NULL, then ASSERT().\r | |
174 | \r | |
175 | @param ErrorLevel The error level of the debug message.\r | |
176 | @param Format Format string for the debug message to print.\r | |
177 | @param BaseListMarker BASE_LIST marker for the variable argument list.\r | |
178 | \r | |
179 | **/\r | |
180 | VOID\r | |
181 | EFIAPI\r | |
182 | DebugBPrint (\r | |
183 | IN UINTN ErrorLevel,\r | |
184 | IN CONST CHAR8 *Format,\r | |
185 | IN BASE_LIST BaseListMarker\r | |
186 | )\r | |
187 | {\r | |
188 | DebugPrintMarker (ErrorLevel, Format, mVaListNull, BaseListMarker);\r | |
189 | }\r | |
190 | \r | |
191 | \r | |
7bc232b2 | 192 | /**\r |
9095d37b | 193 | Prints an assert message containing a filename, line number, and description.\r |
7bc232b2 LG |
194 | This may be followed by a breakpoint or a dead loop.\r |
195 | \r | |
3e5c3238 | 196 | Print a message of the form "ASSERT <FileName>(<LineNumber>): <Description>\n"\r |
9095d37b LG |
197 | to the debug output device. If DEBUG_PROPERTY_ASSERT_BREAKPOINT_ENABLED bit of\r |
198 | PcdDebugProperyMask is set then CpuBreakpoint() is called. Otherwise, if\r | |
199 | DEBUG_PROPERTY_ASSERT_DEADLOOP_ENABLED bit of PcdDebugProperyMask is set then\r | |
200 | CpuDeadLoop() is called. If neither of these bits are set, then this function\r | |
7bc232b2 | 201 | returns immediately after the message is printed to the debug output device.\r |
3e5c3238 | 202 | DebugAssert() must actively prevent recursion. If DebugAssert() is called while\r |
7bc232b2 LG |
203 | processing another DebugAssert(), then DebugAssert() must return immediately.\r |
204 | \r | |
205 | If FileName is NULL, then a <FileName> string of "(NULL) Filename" is printed.\r | |
7bc232b2 LG |
206 | If Description is NULL, then a <Description> string of "(NULL) Description" is printed.\r |
207 | \r | |
2fc59a00 | 208 | @param FileName The pointer to the name of the source file that generated the assert condition.\r |
7bc232b2 | 209 | @param LineNumber The line number in the source file that generated the assert condition\r |
2fc59a00 | 210 | @param Description The pointer to the description of the assert condition.\r |
7bc232b2 LG |
211 | \r |
212 | **/\r | |
213 | VOID\r | |
214 | EFIAPI\r | |
215 | DebugAssert (\r | |
216 | IN CONST CHAR8 *FileName,\r | |
217 | IN UINTN LineNumber,\r | |
218 | IN CONST CHAR8 *Description\r | |
219 | )\r | |
220 | {\r | |
221 | CHAR8 Buffer[MAX_DEBUG_MESSAGE_LENGTH];\r | |
222 | \r | |
223 | //\r | |
7c366ec9 | 224 | // Generate the ASSERT() message in Ascii format\r |
7bc232b2 | 225 | //\r |
aa0a5149 | 226 | AsciiSPrint (Buffer, sizeof (Buffer), "ASSERT [%a] %a(%d): %a\n", gEfiCallerBaseName, FileName, LineNumber, Description);\r |
7bc232b2 LG |
227 | \r |
228 | //\r | |
229 | // Send the print string to the Console Output device\r | |
230 | //\r | |
ccc96db9 | 231 | SerialPortWrite ((UINT8 *)Buffer, AsciiStrLen (Buffer));\r |
7bc232b2 LG |
232 | \r |
233 | //\r | |
234 | // Generate a Breakpoint, DeadLoop, or NOP based on PCD settings\r | |
235 | //\r | |
236 | if ((PcdGet8(PcdDebugPropertyMask) & DEBUG_PROPERTY_ASSERT_BREAKPOINT_ENABLED) != 0) {\r | |
237 | CpuBreakpoint ();\r | |
238 | } else if ((PcdGet8(PcdDebugPropertyMask) & DEBUG_PROPERTY_ASSERT_DEADLOOP_ENABLED) != 0) {\r | |
239 | CpuDeadLoop ();\r | |
240 | }\r | |
241 | }\r | |
242 | \r | |
243 | \r | |
244 | /**\r | |
7bc232b2 LG |
245 | Fills a target buffer with PcdDebugClearMemoryValue, and returns the target buffer.\r |
246 | \r | |
9095d37b | 247 | This function fills Length bytes of Buffer with the value specified by\r |
7bc232b2 LG |
248 | PcdDebugClearMemoryValue, and returns Buffer.\r |
249 | \r | |
250 | If Buffer is NULL, then ASSERT().\r | |
9095d37b | 251 | If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r |
7bc232b2 | 252 | \r |
2fc59a00 | 253 | @param Buffer The pointer to the target buffer to be filled with PcdDebugClearMemoryValue.\r |
9095d37b | 254 | @param Length The number of bytes in Buffer to fill with zeros PcdDebugClearMemoryValue.\r |
7bc232b2 | 255 | \r |
2fc59a00 | 256 | @return Buffer The pointer to the target buffer filled with PcdDebugClearMemoryValue.\r |
7bc232b2 LG |
257 | \r |
258 | **/\r | |
259 | VOID *\r | |
260 | EFIAPI\r | |
261 | DebugClearMemory (\r | |
262 | OUT VOID *Buffer,\r | |
263 | IN UINTN Length\r | |
264 | )\r | |
265 | {\r | |
266 | //\r | |
267 | // If Buffer is NULL, then ASSERT().\r | |
268 | //\r | |
269 | ASSERT (Buffer != NULL);\r | |
270 | \r | |
271 | //\r | |
272 | // SetMem() checks for the the ASSERT() condition on Length and returns Buffer\r | |
273 | //\r | |
274 | return SetMem (Buffer, Length, PcdGet8(PcdDebugClearMemoryValue));\r | |
275 | }\r | |
276 | \r | |
277 | \r | |
278 | /**\r | |
7bc232b2 LG |
279 | Returns TRUE if ASSERT() macros are enabled.\r |
280 | \r | |
9095d37b | 281 | This function returns TRUE if the DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED bit of\r |
7bc232b2 LG |
282 | PcdDebugProperyMask is set. Otherwise FALSE is returned.\r |
283 | \r | |
284 | @retval TRUE The DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED bit of PcdDebugProperyMask is set.\r | |
285 | @retval FALSE The DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED bit of PcdDebugProperyMask is clear.\r | |
286 | \r | |
287 | **/\r | |
288 | BOOLEAN\r | |
289 | EFIAPI\r | |
290 | DebugAssertEnabled (\r | |
291 | VOID\r | |
292 | )\r | |
293 | {\r | |
294 | return (BOOLEAN) ((PcdGet8(PcdDebugPropertyMask) & DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED) != 0);\r | |
295 | }\r | |
296 | \r | |
297 | \r | |
9095d37b | 298 | /**\r |
3e5c3238 | 299 | Returns TRUE if DEBUG() macros are enabled.\r |
7bc232b2 | 300 | \r |
9095d37b | 301 | This function returns TRUE if the DEBUG_PROPERTY_DEBUG_PRINT_ENABLED bit of\r |
7bc232b2 LG |
302 | PcdDebugProperyMask is set. Otherwise FALSE is returned.\r |
303 | \r | |
304 | @retval TRUE The DEBUG_PROPERTY_DEBUG_PRINT_ENABLED bit of PcdDebugProperyMask is set.\r | |
305 | @retval FALSE The DEBUG_PROPERTY_DEBUG_PRINT_ENABLED bit of PcdDebugProperyMask is clear.\r | |
306 | \r | |
307 | **/\r | |
308 | BOOLEAN\r | |
309 | EFIAPI\r | |
310 | DebugPrintEnabled (\r | |
311 | VOID\r | |
312 | )\r | |
313 | {\r | |
314 | return (BOOLEAN) ((PcdGet8(PcdDebugPropertyMask) & DEBUG_PROPERTY_DEBUG_PRINT_ENABLED) != 0);\r | |
315 | }\r | |
316 | \r | |
317 | \r | |
9095d37b | 318 | /**\r |
3e5c3238 | 319 | Returns TRUE if DEBUG_CODE() macros are enabled.\r |
7bc232b2 | 320 | \r |
9095d37b | 321 | This function returns TRUE if the DEBUG_PROPERTY_DEBUG_CODE_ENABLED bit of\r |
7bc232b2 LG |
322 | PcdDebugProperyMask is set. Otherwise FALSE is returned.\r |
323 | \r | |
324 | @retval TRUE The DEBUG_PROPERTY_DEBUG_CODE_ENABLED bit of PcdDebugProperyMask is set.\r | |
325 | @retval FALSE The DEBUG_PROPERTY_DEBUG_CODE_ENABLED bit of PcdDebugProperyMask is clear.\r | |
326 | \r | |
327 | **/\r | |
328 | BOOLEAN\r | |
329 | EFIAPI\r | |
330 | DebugCodeEnabled (\r | |
331 | VOID\r | |
332 | )\r | |
333 | {\r | |
334 | return (BOOLEAN) ((PcdGet8(PcdDebugPropertyMask) & DEBUG_PROPERTY_DEBUG_CODE_ENABLED) != 0);\r | |
335 | }\r | |
336 | \r | |
337 | \r | |
9095d37b | 338 | /**\r |
3e5c3238 | 339 | Returns TRUE if DEBUG_CLEAR_MEMORY() macro is enabled.\r |
7bc232b2 | 340 | \r |
9095d37b | 341 | This function returns TRUE if the DEBUG_PROPERTY_CLEAR_MEMORY_ENABLED bit of\r |
7bc232b2 LG |
342 | PcdDebugProperyMask is set. Otherwise FALSE is returned.\r |
343 | \r | |
eceb3a4c LG |
344 | @retval TRUE The DEBUG_PROPERTY_CLEAR_MEMORY_ENABLED bit of PcdDebugProperyMask is set.\r |
345 | @retval FALSE The DEBUG_PROPERTY_CLEAR_MEMORY_ENABLED bit of PcdDebugProperyMask is clear.\r | |
7bc232b2 LG |
346 | \r |
347 | **/\r | |
348 | BOOLEAN\r | |
349 | EFIAPI\r | |
350 | DebugClearMemoryEnabled (\r | |
351 | VOID\r | |
352 | )\r | |
353 | {\r | |
354 | return (BOOLEAN) ((PcdGet8(PcdDebugPropertyMask) & DEBUG_PROPERTY_CLEAR_MEMORY_ENABLED) != 0);\r | |
355 | }\r | |
243dfd85 LG |
356 | \r |
357 | /**\r | |
358 | Returns TRUE if any one of the bit is set both in ErrorLevel and PcdFixedDebugPrintErrorLevel.\r | |
359 | \r | |
360 | This function compares the bit mask of ErrorLevel and PcdFixedDebugPrintErrorLevel.\r | |
361 | \r | |
362 | @retval TRUE Current ErrorLevel is supported.\r | |
363 | @retval FALSE Current ErrorLevel is not supported.\r | |
364 | \r | |
365 | **/\r | |
366 | BOOLEAN\r | |
367 | EFIAPI\r | |
368 | DebugPrintLevelEnabled (\r | |
369 | IN CONST UINTN ErrorLevel\r | |
370 | )\r | |
371 | {\r | |
372 | return (BOOLEAN) ((ErrorLevel & PcdGet32(PcdFixedDebugPrintErrorLevel)) != 0);\r | |
373 | }\r | |
374 | \r |