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1 | /*++\r | |
2 | \r | |
3 | Copyright (c) 2006, Intel Corporation \r | |
4 | All rights reserved. This program and the accompanying materials \r | |
5 | are licensed and made available under the terms and conditions of the BSD License \r | |
6 | which accompanies this distribution. The full text of the license may be found at \r | |
7 | http://opensource.org/licenses/bsd-license.php \r | |
8 | \r | |
9 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r | |
10 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r | |
11 | \r | |
12 | Module Name:\r | |
13 | Cpu.c\r | |
14 | \r | |
15 | Abstract:\r | |
16 | \r | |
17 | --*/\r | |
18 | \r | |
19 | #include "CpuDxe.h"\r | |
20 | \r | |
21 | //\r | |
22 | // Global Variables\r | |
23 | //\r | |
24 | \r | |
25 | BOOLEAN mInterruptState = FALSE;\r | |
26 | extern UINT32 mExceptionCodeSize;\r | |
27 | UINTN mTimerVector = 0;\r | |
28 | volatile EFI_CPU_INTERRUPT_HANDLER mTimerHandler = NULL;\r | |
29 | EFI_LEGACY_8259_PROTOCOL *gLegacy8259 = NULL;\r | |
30 | \r | |
31 | //\r | |
32 | // The Cpu Architectural Protocol that this Driver produces\r | |
33 | //\r | |
34 | EFI_HANDLE mHandle = NULL;\r | |
35 | EFI_CPU_ARCH_PROTOCOL mCpu = {\r | |
36 | CpuFlushCpuDataCache,\r | |
37 | CpuEnableInterrupt,\r | |
38 | CpuDisableInterrupt,\r | |
39 | CpuGetInterruptState,\r | |
40 | CpuInit,\r | |
41 | CpuRegisterInterruptHandler,\r | |
42 | CpuGetTimerValue,\r | |
43 | CpuSetMemoryAttributes,\r | |
44 | 1, // NumberOfTimers\r | |
45 | 4, // DmaBufferAlignment\r | |
46 | };\r | |
47 | \r | |
48 | EFI_STATUS\r | |
49 | EFIAPI\r | |
50 | CpuFlushCpuDataCache (\r | |
51 | IN EFI_CPU_ARCH_PROTOCOL *This,\r | |
52 | IN EFI_PHYSICAL_ADDRESS Start,\r | |
53 | IN UINT64 Length,\r | |
54 | IN EFI_CPU_FLUSH_TYPE FlushType\r | |
55 | )\r | |
56 | /*++\r | |
57 | \r | |
58 | Routine Description:\r | |
59 | Flush CPU data cache. If the instruction cache is fully coherent\r | |
60 | with all DMA operations then function can just return EFI_SUCCESS.\r | |
61 | \r | |
62 | Arguments:\r | |
63 | This - Protocol instance structure\r | |
64 | Start - Physical address to start flushing from.\r | |
65 | Length - Number of bytes to flush. Round up to chipset \r | |
66 | granularity.\r | |
67 | FlushType - Specifies the type of flush operation to perform.\r | |
68 | \r | |
69 | Returns: \r | |
70 | \r | |
71 | EFI_SUCCESS - If cache was flushed\r | |
72 | EFI_UNSUPPORTED - If flush type is not supported.\r | |
73 | EFI_DEVICE_ERROR - If requested range could not be flushed.\r | |
74 | \r | |
75 | --*/\r | |
76 | {\r | |
77 | if (FlushType == EfiCpuFlushTypeWriteBackInvalidate) {\r | |
78 | AsmWbinvd ();\r | |
79 | return EFI_SUCCESS;\r | |
80 | } else if (FlushType == EfiCpuFlushTypeInvalidate) {\r | |
81 | AsmInvd ();\r | |
82 | return EFI_SUCCESS;\r | |
83 | } else {\r | |
84 | return EFI_UNSUPPORTED;\r | |
85 | }\r | |
86 | }\r | |
87 | \r | |
88 | \r | |
89 | EFI_STATUS\r | |
90 | EFIAPI\r | |
91 | CpuEnableInterrupt (\r | |
92 | IN EFI_CPU_ARCH_PROTOCOL *This\r | |
93 | )\r | |
94 | /*++\r | |
95 | \r | |
96 | Routine Description:\r | |
97 | Enables CPU interrupts.\r | |
98 | \r | |
99 | Arguments:\r | |
100 | This - Protocol instance structure\r | |
101 | \r | |
102 | Returns: \r | |
103 | EFI_SUCCESS - If interrupts were enabled in the CPU\r | |
104 | EFI_DEVICE_ERROR - If interrupts could not be enabled on the CPU.\r | |
105 | \r | |
106 | --*/\r | |
107 | {\r | |
108 | EnableInterrupts (); \r | |
109 | \r | |
110 | mInterruptState = TRUE;\r | |
111 | return EFI_SUCCESS;\r | |
112 | }\r | |
113 | \r | |
114 | \r | |
115 | EFI_STATUS\r | |
116 | EFIAPI\r | |
117 | CpuDisableInterrupt (\r | |
118 | IN EFI_CPU_ARCH_PROTOCOL *This\r | |
119 | )\r | |
120 | /*++\r | |
121 | \r | |
122 | Routine Description:\r | |
123 | Disables CPU interrupts.\r | |
124 | \r | |
125 | Arguments:\r | |
126 | This - Protocol instance structure\r | |
127 | \r | |
128 | Returns: \r | |
129 | EFI_SUCCESS - If interrupts were disabled in the CPU.\r | |
130 | EFI_DEVICE_ERROR - If interrupts could not be disabled on the CPU.\r | |
131 | \r | |
132 | --*/\r | |
133 | {\r | |
134 | DisableInterrupts ();\r | |
135 | \r | |
136 | mInterruptState = FALSE;\r | |
137 | return EFI_SUCCESS;\r | |
138 | }\r | |
139 | \r | |
140 | \r | |
141 | EFI_STATUS\r | |
142 | EFIAPI\r | |
143 | CpuGetInterruptState (\r | |
144 | IN EFI_CPU_ARCH_PROTOCOL *This,\r | |
145 | OUT BOOLEAN *State\r | |
146 | )\r | |
147 | /*++\r | |
148 | \r | |
149 | Routine Description:\r | |
150 | Return the state of interrupts.\r | |
151 | \r | |
152 | Arguments:\r | |
153 | This - Protocol instance structure\r | |
154 | State - Pointer to the CPU's current interrupt state\r | |
155 | \r | |
156 | Returns: \r | |
157 | EFI_SUCCESS - If interrupts were disabled in the CPU.\r | |
158 | EFI_INVALID_PARAMETER - State is NULL.\r | |
159 | \r | |
160 | --*/\r | |
161 | {\r | |
162 | if (State == NULL) {\r | |
163 | return EFI_INVALID_PARAMETER;\r | |
164 | }\r | |
165 | \r | |
166 | *State = mInterruptState;\r | |
167 | return EFI_SUCCESS;\r | |
168 | }\r | |
169 | \r | |
170 | \r | |
171 | EFI_STATUS\r | |
172 | EFIAPI\r | |
173 | CpuInit (\r | |
174 | IN EFI_CPU_ARCH_PROTOCOL *This,\r | |
175 | IN EFI_CPU_INIT_TYPE InitType\r | |
176 | )\r | |
177 | \r | |
178 | /*++\r | |
179 | \r | |
180 | Routine Description:\r | |
181 | Generates an INIT to the CPU\r | |
182 | \r | |
183 | Arguments:\r | |
184 | This - Protocol instance structure\r | |
185 | InitType - Type of CPU INIT to perform\r | |
186 | \r | |
187 | Returns: \r | |
188 | EFI_SUCCESS - If CPU INIT occurred. This value should never be\r | |
189 | seen.\r | |
190 | EFI_DEVICE_ERROR - If CPU INIT failed.\r | |
191 | EFI_NOT_SUPPORTED - Requested type of CPU INIT not supported.\r | |
192 | \r | |
193 | --*/\r | |
194 | {\r | |
195 | return EFI_UNSUPPORTED;\r | |
196 | }\r | |
197 | \r | |
198 | \r | |
199 | EFI_STATUS\r | |
200 | EFIAPI\r | |
201 | CpuRegisterInterruptHandler (\r | |
202 | IN EFI_CPU_ARCH_PROTOCOL *This,\r | |
203 | IN EFI_EXCEPTION_TYPE InterruptType,\r | |
204 | IN EFI_CPU_INTERRUPT_HANDLER InterruptHandler\r | |
205 | )\r | |
206 | /*++\r | |
207 | \r | |
208 | Routine Description:\r | |
209 | Registers a function to be called from the CPU interrupt handler.\r | |
210 | \r | |
211 | Arguments:\r | |
212 | This - Protocol instance structure\r | |
213 | InterruptType - Defines which interrupt to hook. IA-32 valid range\r | |
214 | is 0x00 through 0xFF\r | |
215 | InterruptHandler - A pointer to a function of type \r | |
216 | EFI_CPU_INTERRUPT_HANDLER that is called when a\r | |
217 | processor interrupt occurs. A null pointer\r | |
218 | is an error condition.\r | |
219 | \r | |
220 | Returns: \r | |
221 | EFI_SUCCESS - If handler installed or uninstalled.\r | |
222 | EFI_ALREADY_STARTED - InterruptHandler is not NULL, and a handler for \r | |
223 | InterruptType was previously installed\r | |
224 | EFI_INVALID_PARAMETER - InterruptHandler is NULL, and a handler for \r | |
225 | InterruptType was not previously installed.\r | |
226 | EFI_UNSUPPORTED - The interrupt specified by InterruptType is not\r | |
227 | supported.\r | |
228 | \r | |
229 | --*/\r | |
230 | {\r | |
231 | if ((InterruptType < 0) || (InterruptType >= INTERRUPT_VECTOR_NUMBER)) {\r | |
232 | return EFI_UNSUPPORTED;\r | |
233 | }\r | |
234 | if ((UINTN)(UINT32)InterruptType != mTimerVector) {\r | |
235 | return EFI_UNSUPPORTED;\r | |
236 | }\r | |
237 | if ((mTimerHandler == NULL) && (InterruptHandler == NULL)) {\r | |
238 | return EFI_INVALID_PARAMETER;\r | |
239 | } else if ((mTimerHandler != NULL) && (InterruptHandler != NULL)) {\r | |
240 | return EFI_ALREADY_STARTED;\r | |
241 | }\r | |
242 | mTimerHandler = InterruptHandler;\r | |
243 | return EFI_SUCCESS;\r | |
244 | }\r | |
245 | \r | |
246 | EFI_STATUS\r | |
247 | EFIAPI\r | |
248 | CpuGetTimerValue (\r | |
249 | IN EFI_CPU_ARCH_PROTOCOL *This,\r | |
250 | IN UINT32 TimerIndex,\r | |
251 | OUT UINT64 *TimerValue,\r | |
252 | OUT UINT64 *TimerPeriod OPTIONAL\r | |
253 | )\r | |
254 | /*++\r | |
255 | \r | |
256 | Routine Description:\r | |
257 | Returns a timer value from one of the CPU's internal timers. There is no\r | |
258 | inherent time interval between ticks but is a function of the CPU \r | |
259 | frequency.\r | |
260 | \r | |
261 | Arguments:\r | |
262 | This - Protocol instance structure\r | |
263 | TimerIndex - Specifies which CPU timer ie requested\r | |
264 | TimerValue - Pointer to the returned timer value\r | |
265 | TimerPeriod - \r | |
266 | \r | |
267 | Returns: \r | |
268 | EFI_SUCCESS - If the CPU timer count was returned.\r | |
269 | EFI_UNSUPPORTED - If the CPU does not have any readable timers\r | |
270 | EFI_DEVICE_ERROR - If an error occurred reading the timer.\r | |
271 | EFI_INVALID_PARAMETER - TimerIndex is not valid\r | |
272 | \r | |
273 | --*/\r | |
274 | { \r | |
275 | if (TimerValue == NULL) {\r | |
276 | return EFI_INVALID_PARAMETER;\r | |
277 | }\r | |
278 | \r | |
279 | if (TimerIndex == 0) {\r | |
280 | *TimerValue = AsmReadTsc ();\r | |
281 | if (TimerPeriod != NULL) {\r | |
282 | //\r | |
283 | // BugBug: Hard coded. Don't know how to do this generically\r | |
284 | //\r | |
285 | *TimerPeriod = 1000000000;\r | |
286 | }\r | |
287 | return EFI_SUCCESS;\r | |
288 | }\r | |
289 | return EFI_INVALID_PARAMETER;\r | |
290 | }\r | |
291 | \r | |
292 | EFI_STATUS\r | |
293 | EFIAPI\r | |
294 | CpuSetMemoryAttributes (\r | |
295 | IN EFI_CPU_ARCH_PROTOCOL *This,\r | |
296 | IN EFI_PHYSICAL_ADDRESS BaseAddress,\r | |
297 | IN UINT64 Length,\r | |
298 | IN UINT64 Attributes\r | |
299 | )\r | |
300 | /*++\r | |
301 | \r | |
302 | Routine Description:\r | |
303 | Set memory cacheability attributes for given range of memeory\r | |
304 | \r | |
305 | Arguments:\r | |
306 | This - Protocol instance structure\r | |
307 | BaseAddress - Specifies the start address of the memory range\r | |
308 | Length - Specifies the length of the memory range\r | |
309 | Attributes - The memory cacheability for the memory range\r | |
310 | \r | |
311 | Returns: \r | |
312 | EFI_SUCCESS - If the cacheability of that memory range is set successfully\r | |
313 | EFI_UNSUPPORTED - If the desired operation cannot be done\r | |
314 | EFI_INVALID_PARAMETER - The input parameter is not correct, such as Length = 0\r | |
315 | \r | |
316 | --*/\r | |
317 | {\r | |
318 | return EFI_UNSUPPORTED;\r | |
319 | }\r | |
320 | \r | |
321 | #if CPU_EXCEPTION_DEBUG_OUTPUT\r | |
322 | VOID\r | |
323 | DumpExceptionDataDebugOut (\r | |
324 | IN EFI_EXCEPTION_TYPE InterruptType,\r | |
325 | IN EFI_SYSTEM_CONTEXT SystemContext\r | |
326 | )\r | |
327 | {\r | |
328 | UINT32 ErrorCodeFlag;\r | |
329 | \r | |
330 | ErrorCodeFlag = 0x00027d00;\r | |
331 | \r | |
332 | #ifdef EFI32\r | |
333 | DEBUG ((\r | |
334 | EFI_D_ERROR,\r | |
335 | "!!!! IA32 Exception Type - %08x !!!!\n",\r | |
336 | InterruptType\r | |
337 | ));\r | |
338 | DEBUG ((\r | |
339 | EFI_D_ERROR,\r | |
340 | "EIP - %08x, CS - %08x, EFLAGS - %08x\n",\r | |
341 | SystemContext.SystemContextIa32->Eip,\r | |
342 | SystemContext.SystemContextIa32->Cs,\r | |
343 | SystemContext.SystemContextIa32->Eflags\r | |
344 | ));\r | |
345 | if (ErrorCodeFlag & (1 << InterruptType)) {\r | |
346 | DEBUG ((\r | |
347 | EFI_D_ERROR,\r | |
348 | "ExceptionData - %08x\n",\r | |
349 | SystemContext.SystemContextIa32->ExceptionData\r | |
350 | ));\r | |
351 | }\r | |
352 | DEBUG ((\r | |
353 | EFI_D_ERROR,\r | |
354 | "EAX - %08x, ECX - %08x, EDX - %08x, EBX - %08x\n",\r | |
355 | SystemContext.SystemContextIa32->Eax,\r | |
356 | SystemContext.SystemContextIa32->Ecx,\r | |
357 | SystemContext.SystemContextIa32->Edx,\r | |
358 | SystemContext.SystemContextIa32->Ebx\r | |
359 | ));\r | |
360 | DEBUG ((\r | |
361 | EFI_D_ERROR,\r | |
362 | "ESP - %08x, EBP - %08x, ESI - %08x, EDI - %08x\n",\r | |
363 | SystemContext.SystemContextIa32->Esp,\r | |
364 | SystemContext.SystemContextIa32->Ebp,\r | |
365 | SystemContext.SystemContextIa32->Esi,\r | |
366 | SystemContext.SystemContextIa32->Edi\r | |
367 | ));\r | |
368 | DEBUG ((\r | |
369 | EFI_D_ERROR,\r | |
370 | "DS - %08x, ES - %08x, FS - %08x, GS - %08x, SS - %08x\n",\r | |
371 | SystemContext.SystemContextIa32->Ds,\r | |
372 | SystemContext.SystemContextIa32->Es,\r | |
373 | SystemContext.SystemContextIa32->Fs,\r | |
374 | SystemContext.SystemContextIa32->Gs,\r | |
375 | SystemContext.SystemContextIa32->Ss\r | |
376 | ));\r | |
377 | DEBUG ((\r | |
378 | EFI_D_ERROR,\r | |
379 | "GDTR - %08x %08x, IDTR - %08x %08x\n",\r | |
380 | SystemContext.SystemContextIa32->Gdtr[0],\r | |
381 | SystemContext.SystemContextIa32->Gdtr[1],\r | |
382 | SystemContext.SystemContextIa32->Idtr[0],\r | |
383 | SystemContext.SystemContextIa32->Idtr[1]\r | |
384 | ));\r | |
385 | DEBUG ((\r | |
386 | EFI_D_ERROR,\r | |
387 | "LDTR - %08x, TR - %08x\n",\r | |
388 | SystemContext.SystemContextIa32->Ldtr,\r | |
389 | SystemContext.SystemContextIa32->Tr\r | |
390 | ));\r | |
391 | DEBUG ((\r | |
392 | EFI_D_ERROR,\r | |
393 | "CR0 - %08x, CR2 - %08x, CR3 - %08x, CR4 - %08x\n",\r | |
394 | SystemContext.SystemContextIa32->Cr0,\r | |
395 | SystemContext.SystemContextIa32->Cr2,\r | |
396 | SystemContext.SystemContextIa32->Cr3,\r | |
397 | SystemContext.SystemContextIa32->Cr4\r | |
398 | ));\r | |
399 | DEBUG ((\r | |
400 | EFI_D_ERROR,\r | |
401 | "DR0 - %08x, DR1 - %08x, DR2 - %08x, DR3 - %08x\n",\r | |
402 | SystemContext.SystemContextIa32->Dr0,\r | |
403 | SystemContext.SystemContextIa32->Dr1,\r | |
404 | SystemContext.SystemContextIa32->Dr2,\r | |
405 | SystemContext.SystemContextIa32->Dr3\r | |
406 | ));\r | |
407 | DEBUG ((\r | |
408 | EFI_D_ERROR,\r | |
409 | "DR6 - %08x, DR7 - %08x\n",\r | |
410 | SystemContext.SystemContextIa32->Dr6,\r | |
411 | SystemContext.SystemContextIa32->Dr7\r | |
412 | ));\r | |
413 | #else\r | |
414 | DEBUG ((\r | |
415 | EFI_D_ERROR,\r | |
416 | "!!!! X64 Exception Type - %016lx !!!!\n",\r | |
417 | (UINT64)InterruptType\r | |
418 | ));\r | |
419 | DEBUG ((\r | |
420 | EFI_D_ERROR,\r | |
421 | "RIP - %016lx, CS - %016lx, RFLAGS - %016lx\n",\r | |
422 | SystemContext.SystemContextX64->Rip,\r | |
423 | SystemContext.SystemContextX64->Cs,\r | |
424 | SystemContext.SystemContextX64->Rflags\r | |
425 | ));\r | |
426 | if (ErrorCodeFlag & (1 << InterruptType)) {\r | |
427 | DEBUG ((\r | |
428 | EFI_D_ERROR,\r | |
429 | "ExceptionData - %016lx\n",\r | |
430 | SystemContext.SystemContextX64->ExceptionData\r | |
431 | ));\r | |
432 | }\r | |
433 | DEBUG ((\r | |
434 | EFI_D_ERROR,\r | |
435 | "RAX - %016lx, RCX - %016lx, RDX - %016lx\n",\r | |
436 | SystemContext.SystemContextX64->Rax,\r | |
437 | SystemContext.SystemContextX64->Rcx,\r | |
438 | SystemContext.SystemContextX64->Rdx\r | |
439 | ));\r | |
440 | DEBUG ((\r | |
441 | EFI_D_ERROR,\r | |
442 | "RBX - %016lx, RSP - %016lx, RBP - %016lx\n",\r | |
443 | SystemContext.SystemContextX64->Rbx,\r | |
444 | SystemContext.SystemContextX64->Rsp,\r | |
445 | SystemContext.SystemContextX64->Rbp\r | |
446 | ));\r | |
447 | DEBUG ((\r | |
448 | EFI_D_ERROR,\r | |
449 | "RSI - %016lx, RDI - %016lx\n",\r | |
450 | SystemContext.SystemContextX64->Rsi,\r | |
451 | SystemContext.SystemContextX64->Rdi\r | |
452 | ));\r | |
453 | DEBUG ((\r | |
454 | EFI_D_ERROR,\r | |
455 | "R8 - %016lx, R9 - %016lx, R10 - %016lx\n",\r | |
456 | SystemContext.SystemContextX64->R8,\r | |
457 | SystemContext.SystemContextX64->R9,\r | |
458 | SystemContext.SystemContextX64->R10\r | |
459 | ));\r | |
460 | DEBUG ((\r | |
461 | EFI_D_ERROR,\r | |
462 | "R11 - %016lx, R12 - %016lx, R13 - %016lx\n",\r | |
463 | SystemContext.SystemContextX64->R11,\r | |
464 | SystemContext.SystemContextX64->R12,\r | |
465 | SystemContext.SystemContextX64->R13\r | |
466 | ));\r | |
467 | DEBUG ((\r | |
468 | EFI_D_ERROR,\r | |
469 | "R14 - %016lx, R15 - %016lx\n",\r | |
470 | SystemContext.SystemContextX64->R14,\r | |
471 | SystemContext.SystemContextX64->R15\r | |
472 | ));\r | |
473 | DEBUG ((\r | |
474 | EFI_D_ERROR,\r | |
475 | "DS - %016lx, ES - %016lx, FS - %016lx\n",\r | |
476 | SystemContext.SystemContextX64->Ds,\r | |
477 | SystemContext.SystemContextX64->Es,\r | |
478 | SystemContext.SystemContextX64->Fs\r | |
479 | ));\r | |
480 | DEBUG ((\r | |
481 | EFI_D_ERROR,\r | |
482 | "GS - %016lx, SS - %016lx\n",\r | |
483 | SystemContext.SystemContextX64->Gs,\r | |
484 | SystemContext.SystemContextX64->Ss\r | |
485 | ));\r | |
486 | DEBUG ((\r | |
487 | EFI_D_ERROR,\r | |
488 | "GDTR - %016lx %016lx, LDTR - %016lx\n",\r | |
489 | SystemContext.SystemContextX64->Gdtr[0],\r | |
490 | SystemContext.SystemContextX64->Gdtr[1],\r | |
491 | SystemContext.SystemContextX64->Ldtr\r | |
492 | ));\r | |
493 | DEBUG ((\r | |
494 | EFI_D_ERROR,\r | |
495 | "IDTR - %016lx %016lx, TR - %016lx\n",\r | |
496 | SystemContext.SystemContextX64->Idtr[0],\r | |
497 | SystemContext.SystemContextX64->Idtr[1],\r | |
498 | SystemContext.SystemContextX64->Tr\r | |
499 | ));\r | |
500 | DEBUG ((\r | |
501 | EFI_D_ERROR,\r | |
502 | "CR0 - %016lx, CR2 - %016lx, CR3 - %016lx\n",\r | |
503 | SystemContext.SystemContextX64->Cr0,\r | |
504 | SystemContext.SystemContextX64->Cr2,\r | |
505 | SystemContext.SystemContextX64->Cr3\r | |
506 | ));\r | |
507 | DEBUG ((\r | |
508 | EFI_D_ERROR,\r | |
509 | "CR4 - %016lx, CR8 - %016lx\n",\r | |
510 | SystemContext.SystemContextX64->Cr4,\r | |
511 | SystemContext.SystemContextX64->Cr8\r | |
512 | ));\r | |
513 | DEBUG ((\r | |
514 | EFI_D_ERROR,\r | |
515 | "DR0 - %016lx, DR1 - %016lx, DR2 - %016lx\n",\r | |
516 | SystemContext.SystemContextX64->Dr0,\r | |
517 | SystemContext.SystemContextX64->Dr1,\r | |
518 | SystemContext.SystemContextX64->Dr2\r | |
519 | ));\r | |
520 | DEBUG ((\r | |
521 | EFI_D_ERROR,\r | |
522 | "DR3 - %016lx, DR6 - %016lx, DR7 - %016lx\n",\r | |
523 | SystemContext.SystemContextX64->Dr3,\r | |
524 | SystemContext.SystemContextX64->Dr6,\r | |
525 | SystemContext.SystemContextX64->Dr7\r | |
526 | ));\r | |
527 | #endif\r | |
528 | return ;\r | |
529 | }\r | |
530 | #endif\r | |
531 | \r | |
532 | UINTN\r | |
533 | SPrint (\r | |
534 | IN OUT CHAR16 *Buffer,\r | |
535 | IN CONST CHAR16 *Format,\r | |
536 | ...\r | |
537 | )\r | |
538 | {\r | |
539 | VA_LIST Marker;\r | |
540 | UINTN Index;\r | |
541 | UINTN Flags;\r | |
542 | UINTN Width;\r | |
543 | UINT64 Value;\r | |
544 | \r | |
545 | VA_START (Marker, Format);\r | |
546 | \r | |
547 | //\r | |
548 | // Process the format string. Stop if Buffer is over run.\r | |
549 | //\r | |
550 | \r | |
551 | for (Index = 0; *Format != 0; Format++) {\r | |
552 | if (*Format != L'%') {\r | |
553 | Buffer[Index++] = *Format;\r | |
554 | } else {\r | |
555 | \r | |
556 | //\r | |
557 | // Now it's time to parse what follows after %\r | |
558 | // Support: % [ 0 width ] [ l ] x\r | |
559 | // width - fill 0, to ensure the width of x will be "width"\r | |
560 | // l - UINT64 instead of UINT32\r | |
561 | //\r | |
562 | Width = 0;\r | |
563 | Flags = 0;\r | |
564 | Format ++;\r | |
565 | \r | |
566 | if (*Format == L'0') {\r | |
567 | Flags |= PREFIX_ZERO;\r | |
568 | do {\r | |
569 | Width += Width * 10 + (*Format - L'0');\r | |
570 | Format ++;\r | |
571 | } while (*Format >= L'1' && *Format <= L'9');\r | |
572 | }\r | |
573 | \r | |
574 | if (*Format == L'l') {\r | |
575 | Flags |= LONG_TYPE;\r | |
576 | Format ++;\r | |
577 | }\r | |
578 | \r | |
579 | \r | |
580 | switch (*Format) {\r | |
581 | case 'X':\r | |
582 | Flags |= PREFIX_ZERO;\r | |
583 | Width = sizeof (UINT64) * 2;\r | |
584 | //\r | |
585 | // break skiped on purpose\r | |
586 | //\r | |
587 | case 'x':\r | |
588 | if ((Flags & LONG_TYPE) == LONG_TYPE) {\r | |
589 | Value = VA_ARG (Marker, UINT64);\r | |
590 | } else {\r | |
591 | Value = VA_ARG (Marker, UINTN);\r | |
592 | }\r | |
593 | \r | |
594 | UnicodeValueToString (Buffer+Index, Flags, Value, Width);\r | |
595 | \r | |
596 | for ( ; Buffer[Index] != L'\0'; Index ++) {\r | |
597 | }\r | |
598 | \r | |
599 | break;\r | |
600 | \r | |
601 | default:\r | |
602 | //\r | |
603 | // if the type is unknown print it to the screen\r | |
604 | //\r | |
605 | Buffer[Index++] = *Format;\r | |
606 | }\r | |
607 | } \r | |
608 | }\r | |
609 | Buffer[Index++] = '\0'; \r | |
610 | \r | |
611 | VA_END (Marker);\r | |
612 | return Index;\r | |
613 | }\r | |
614 | \r | |
615 | VOID\r | |
616 | DumpExceptionDataVgaOut (\r | |
617 | IN EFI_EXCEPTION_TYPE InterruptType,\r | |
618 | IN EFI_SYSTEM_CONTEXT SystemContext\r | |
619 | )\r | |
620 | {\r | |
621 | UINTN COLUMN_MAX;\r | |
622 | UINTN ROW_MAX;\r | |
623 | UINT32 ErrorCodeFlag;\r | |
624 | CHAR16 *VideoBufferBase;\r | |
625 | CHAR16 *VideoBuffer;\r | |
626 | UINTN Index;\r | |
627 | \r | |
628 | COLUMN_MAX = 80;\r | |
629 | ROW_MAX = 25;\r | |
630 | ErrorCodeFlag = 0x00027d00;\r | |
631 | VideoBufferBase = (CHAR16 *) (UINTN) 0xb8000;\r | |
632 | VideoBuffer = (CHAR16 *) (UINTN) 0xb8000;\r | |
633 | \r | |
634 | #ifdef EFI32\r | |
635 | SPrint (\r | |
636 | VideoBuffer, \r | |
637 | L"!!!! IA32 Exception Type - %08x !!!!",\r | |
638 | InterruptType\r | |
639 | );\r | |
640 | VideoBuffer += COLUMN_MAX;\r | |
641 | SPrint (\r | |
642 | VideoBuffer, \r | |
643 | L"EIP - %08x, CS - %08x, EFLAGS - %08x",\r | |
644 | SystemContext.SystemContextIa32->Eip,\r | |
645 | SystemContext.SystemContextIa32->Cs,\r | |
646 | SystemContext.SystemContextIa32->Eflags\r | |
647 | );\r | |
648 | VideoBuffer += COLUMN_MAX;\r | |
649 | if (ErrorCodeFlag & (1 << InterruptType)) {\r | |
650 | SPrint (\r | |
651 | VideoBuffer,\r | |
652 | L"ExceptionData - %08x",\r | |
653 | SystemContext.SystemContextIa32->ExceptionData\r | |
654 | );\r | |
655 | VideoBuffer += COLUMN_MAX;\r | |
656 | }\r | |
657 | SPrint (\r | |
658 | VideoBuffer,\r | |
659 | L"EAX - %08x, ECX - %08x, EDX - %08x, EBX - %08x",\r | |
660 | SystemContext.SystemContextIa32->Eax,\r | |
661 | SystemContext.SystemContextIa32->Ecx,\r | |
662 | SystemContext.SystemContextIa32->Edx,\r | |
663 | SystemContext.SystemContextIa32->Ebx\r | |
664 | );\r | |
665 | VideoBuffer += COLUMN_MAX;\r | |
666 | \r | |
667 | SPrint (\r | |
668 | VideoBuffer,\r | |
669 | L"ESP - %08x, EBP - %08x, ESI - %08x, EDI - %08x",\r | |
670 | SystemContext.SystemContextIa32->Esp,\r | |
671 | SystemContext.SystemContextIa32->Ebp,\r | |
672 | SystemContext.SystemContextIa32->Esi,\r | |
673 | SystemContext.SystemContextIa32->Edi\r | |
674 | );\r | |
675 | VideoBuffer += COLUMN_MAX;\r | |
676 | \r | |
677 | SPrint (\r | |
678 | VideoBuffer,\r | |
679 | L"DS - %08x, ES - %08x, FS - %08x, GS - %08x, SS - %08x",\r | |
680 | SystemContext.SystemContextIa32->Ds,\r | |
681 | SystemContext.SystemContextIa32->Es,\r | |
682 | SystemContext.SystemContextIa32->Fs,\r | |
683 | SystemContext.SystemContextIa32->Gs,\r | |
684 | SystemContext.SystemContextIa32->Ss\r | |
685 | );\r | |
686 | VideoBuffer += COLUMN_MAX;\r | |
687 | \r | |
688 | SPrint (\r | |
689 | VideoBuffer,\r | |
690 | L"GDTR - %08x %08x, IDTR - %08x %08x",\r | |
691 | SystemContext.SystemContextIa32->Gdtr[0],\r | |
692 | SystemContext.SystemContextIa32->Gdtr[1],\r | |
693 | SystemContext.SystemContextIa32->Idtr[0],\r | |
694 | SystemContext.SystemContextIa32->Idtr[1]\r | |
695 | );\r | |
696 | VideoBuffer += COLUMN_MAX;\r | |
697 | \r | |
698 | SPrint (\r | |
699 | VideoBuffer,\r | |
700 | L"LDTR - %08x, TR - %08x",\r | |
701 | SystemContext.SystemContextIa32->Ldtr,\r | |
702 | SystemContext.SystemContextIa32->Tr\r | |
703 | );\r | |
704 | VideoBuffer += COLUMN_MAX;\r | |
705 | \r | |
706 | SPrint (\r | |
707 | VideoBuffer,\r | |
708 | L"CR0 - %08x, CR2 - %08x, CR3 - %08x, CR4 - %08x",\r | |
709 | SystemContext.SystemContextIa32->Cr0,\r | |
710 | SystemContext.SystemContextIa32->Cr2,\r | |
711 | SystemContext.SystemContextIa32->Cr3,\r | |
712 | SystemContext.SystemContextIa32->Cr4\r | |
713 | );\r | |
714 | VideoBuffer += COLUMN_MAX;\r | |
715 | \r | |
716 | SPrint (\r | |
717 | VideoBuffer,\r | |
718 | L"DR0 - %08x, DR1 - %08x, DR2 - %08x, DR3 - %08x",\r | |
719 | SystemContext.SystemContextIa32->Dr0,\r | |
720 | SystemContext.SystemContextIa32->Dr1,\r | |
721 | SystemContext.SystemContextIa32->Dr2,\r | |
722 | SystemContext.SystemContextIa32->Dr3\r | |
723 | );\r | |
724 | VideoBuffer += COLUMN_MAX;\r | |
725 | \r | |
726 | SPrint (\r | |
727 | VideoBuffer,\r | |
728 | L"DR6 - %08x, DR7 - %08x",\r | |
729 | SystemContext.SystemContextIa32->Dr6,\r | |
730 | SystemContext.SystemContextIa32->Dr7\r | |
731 | );\r | |
732 | VideoBuffer += COLUMN_MAX;\r | |
733 | #else\r | |
734 | SPrint (\r | |
735 | VideoBuffer,\r | |
736 | L"!!!! X64 Exception Type - %016lx !!!!",\r | |
737 | (UINT64)InterruptType\r | |
738 | );\r | |
739 | VideoBuffer += COLUMN_MAX;\r | |
740 | \r | |
741 | SPrint (\r | |
742 | VideoBuffer,\r | |
743 | L"RIP - %016lx, CS - %016lx, RFLAGS - %016lx",\r | |
744 | SystemContext.SystemContextX64->Rip,\r | |
745 | SystemContext.SystemContextX64->Cs,\r | |
746 | SystemContext.SystemContextX64->Rflags\r | |
747 | );\r | |
748 | VideoBuffer += COLUMN_MAX;\r | |
749 | \r | |
750 | if (ErrorCodeFlag & (1 << InterruptType)) {\r | |
751 | SPrint (\r | |
752 | VideoBuffer,\r | |
753 | L"ExceptionData - %016lx",\r | |
754 | SystemContext.SystemContextX64->ExceptionData\r | |
755 | );\r | |
756 | VideoBuffer += COLUMN_MAX;\r | |
757 | }\r | |
758 | \r | |
759 | SPrint (\r | |
760 | VideoBuffer,\r | |
761 | L"RAX - %016lx, RCX - %016lx, RDX - %016lx",\r | |
762 | SystemContext.SystemContextX64->Rax,\r | |
763 | SystemContext.SystemContextX64->Rcx,\r | |
764 | SystemContext.SystemContextX64->Rdx\r | |
765 | );\r | |
766 | VideoBuffer += COLUMN_MAX;\r | |
767 | \r | |
768 | SPrint (\r | |
769 | VideoBuffer,\r | |
770 | L"RBX - %016lx, RSP - %016lx, RBP - %016lx",\r | |
771 | SystemContext.SystemContextX64->Rbx,\r | |
772 | SystemContext.SystemContextX64->Rsp,\r | |
773 | SystemContext.SystemContextX64->Rbp\r | |
774 | );\r | |
775 | VideoBuffer += COLUMN_MAX;\r | |
776 | \r | |
777 | SPrint (\r | |
778 | VideoBuffer,\r | |
779 | L"RSI - %016lx, RDI - %016lx",\r | |
780 | SystemContext.SystemContextX64->Rsi,\r | |
781 | SystemContext.SystemContextX64->Rdi\r | |
782 | );\r | |
783 | VideoBuffer += COLUMN_MAX;\r | |
784 | \r | |
785 | SPrint (\r | |
786 | VideoBuffer,\r | |
787 | L"R8 - %016lx, R9 - %016lx, R10 - %016lx",\r | |
788 | SystemContext.SystemContextX64->R8,\r | |
789 | SystemContext.SystemContextX64->R9,\r | |
790 | SystemContext.SystemContextX64->R10\r | |
791 | );\r | |
792 | VideoBuffer += COLUMN_MAX;\r | |
793 | \r | |
794 | SPrint (\r | |
795 | VideoBuffer,\r | |
796 | L"R11 - %016lx, R12 - %016lx, R13 - %016lx",\r | |
797 | SystemContext.SystemContextX64->R11,\r | |
798 | SystemContext.SystemContextX64->R12,\r | |
799 | SystemContext.SystemContextX64->R13\r | |
800 | );\r | |
801 | VideoBuffer += COLUMN_MAX;\r | |
802 | \r | |
803 | SPrint (\r | |
804 | VideoBuffer,\r | |
805 | L"R14 - %016lx, R15 - %016lx",\r | |
806 | SystemContext.SystemContextX64->R14,\r | |
807 | SystemContext.SystemContextX64->R15\r | |
808 | );\r | |
809 | VideoBuffer += COLUMN_MAX;\r | |
810 | \r | |
811 | SPrint (\r | |
812 | VideoBuffer,\r | |
813 | L"DS - %016lx, ES - %016lx, FS - %016lx",\r | |
814 | SystemContext.SystemContextX64->Ds,\r | |
815 | SystemContext.SystemContextX64->Es,\r | |
816 | SystemContext.SystemContextX64->Fs\r | |
817 | );\r | |
818 | VideoBuffer += COLUMN_MAX;\r | |
819 | \r | |
820 | SPrint (\r | |
821 | VideoBuffer,\r | |
822 | L"GS - %016lx, SS - %016lx",\r | |
823 | SystemContext.SystemContextX64->Gs,\r | |
824 | SystemContext.SystemContextX64->Ss\r | |
825 | );\r | |
826 | VideoBuffer += COLUMN_MAX;\r | |
827 | \r | |
828 | SPrint (\r | |
829 | VideoBuffer,\r | |
830 | L"GDTR - %016lx %016lx, LDTR - %016lx",\r | |
831 | SystemContext.SystemContextX64->Gdtr[0],\r | |
832 | SystemContext.SystemContextX64->Gdtr[1],\r | |
833 | SystemContext.SystemContextX64->Ldtr\r | |
834 | );\r | |
835 | VideoBuffer += COLUMN_MAX;\r | |
836 | \r | |
837 | SPrint (\r | |
838 | VideoBuffer,\r | |
839 | L"IDTR - %016lx %016lx, TR - %016lx",\r | |
840 | SystemContext.SystemContextX64->Idtr[0],\r | |
841 | SystemContext.SystemContextX64->Idtr[1],\r | |
842 | SystemContext.SystemContextX64->Tr\r | |
843 | );\r | |
844 | VideoBuffer += COLUMN_MAX;\r | |
845 | \r | |
846 | SPrint (\r | |
847 | VideoBuffer,\r | |
848 | L"CR0 - %016lx, CR2 - %016lx, CR3 - %016lx",\r | |
849 | SystemContext.SystemContextX64->Cr0,\r | |
850 | SystemContext.SystemContextX64->Cr2,\r | |
851 | SystemContext.SystemContextX64->Cr3\r | |
852 | );\r | |
853 | VideoBuffer += COLUMN_MAX;\r | |
854 | \r | |
855 | SPrint (\r | |
856 | VideoBuffer,\r | |
857 | L"CR4 - %016lx, CR8 - %016lx",\r | |
858 | SystemContext.SystemContextX64->Cr4,\r | |
859 | SystemContext.SystemContextX64->Cr8\r | |
860 | );\r | |
861 | VideoBuffer += COLUMN_MAX;\r | |
862 | \r | |
863 | SPrint (\r | |
864 | VideoBuffer,\r | |
865 | L"DR0 - %016lx, DR1 - %016lx, DR2 - %016lx",\r | |
866 | SystemContext.SystemContextX64->Dr0,\r | |
867 | SystemContext.SystemContextX64->Dr1,\r | |
868 | SystemContext.SystemContextX64->Dr2\r | |
869 | );\r | |
870 | VideoBuffer += COLUMN_MAX;\r | |
871 | \r | |
872 | SPrint (\r | |
873 | VideoBuffer,\r | |
874 | L"DR3 - %016lx, DR6 - %016lx, DR7 - %016lx",\r | |
875 | SystemContext.SystemContextX64->Dr3,\r | |
876 | SystemContext.SystemContextX64->Dr6,\r | |
877 | SystemContext.SystemContextX64->Dr7\r | |
878 | );\r | |
879 | VideoBuffer += COLUMN_MAX;\r | |
880 | #endif\r | |
881 | \r | |
882 | for (Index = 0; Index < COLUMN_MAX * ROW_MAX; Index ++) {\r | |
883 | if (Index > (UINTN)(VideoBuffer - VideoBufferBase)) {\r | |
884 | VideoBufferBase[Index] = 0x0c20;\r | |
885 | } else {\r | |
886 | VideoBufferBase[Index] |= 0x0c00;\r | |
887 | }\r | |
888 | }\r | |
889 | \r | |
890 | return ;\r | |
891 | }\r | |
892 | \r | |
893 | #if CPU_EXCEPTION_VGA_SWITCH\r | |
894 | UINT16\r | |
895 | SwitchVideoMode (\r | |
896 | UINT16 NewVideoMode\r | |
897 | )\r | |
898 | /*++\r | |
899 | Description\r | |
900 | Switch Video Mode from current mode to new mode, and return the old mode.\r | |
901 | Use Thuink\r | |
902 | \r | |
903 | Arguments\r | |
904 | NewVideoMode - new video mode want to set\r | |
905 | \r | |
906 | Return\r | |
907 | UINT16 - (UINT16) -1 indicates failure\r | |
908 | Other value indicates the old mode, which can be used for restore later\r | |
909 | \r | |
910 | --*/\r | |
911 | {\r | |
912 | EFI_STATUS Status;\r | |
913 | EFI_LEGACY_BIOS_THUNK_PROTOCOL *LegacyBios;\r | |
914 | EFI_IA32_REGISTER_SET Regs;\r | |
915 | UINT16 OriginalVideoMode = (UINT16) -1;\r | |
916 | \r | |
917 | //\r | |
918 | // See if the Legacy BIOS Protocol is available\r | |
919 | //\r | |
920 | Status = gBS->LocateProtocol (&gEfiLegacyBiosThunkProtocolGuid, NULL, (VOID **) &LegacyBios);\r | |
921 | if (EFI_ERROR (Status)) {\r | |
922 | return OriginalVideoMode;\r | |
923 | }\r | |
924 | \r | |
925 | //\r | |
926 | // VESA SuperVGA BIOS - GET CURRENT VIDEO MODE\r | |
927 | // AX = 4F03h\r | |
928 | // Return:AL = 4Fh if function supported\r | |
929 | // AH = status 00h successful\r | |
930 | // BX = video mode (see #0082,#0083)\r | |
931 | //\r | |
932 | gBS->SetMem (&Regs, sizeof (Regs), 0);\r | |
933 | Regs.X.AX = 0x4F03;\r | |
934 | LegacyBios->Int86 (LegacyBios, 0x10, &Regs);\r | |
935 | if (Regs.X.AX == 0x004F) {\r | |
936 | OriginalVideoMode = Regs.X.BX;\r | |
937 | } else {\r | |
938 | //\r | |
939 | // VIDEO - GET CURRENT VIDEO MODE\r | |
940 | // AH = 0Fh\r | |
941 | // Return:AH = number of character columns\r | |
942 | // AL = display mode (see #0009 at AH=00h)\r | |
943 | // BH = active page (see AH=05h)\r | |
944 | //\r | |
945 | gBS->SetMem (&Regs, sizeof (Regs), 0);\r | |
946 | Regs.H.AH = 0x0F;\r | |
947 | LegacyBios->Int86 (LegacyBios, 0x10, &Regs);\r | |
948 | OriginalVideoMode = Regs.H.AL;\r | |
949 | }\r | |
950 | \r | |
951 | //\r | |
952 | // Set new video mode\r | |
953 | //\r | |
954 | if (NewVideoMode < 0x100) {\r | |
955 | //\r | |
956 | // Set the 80x25 Text VGA Mode: Assume successful always\r | |
957 | //\r | |
958 | // VIDEO - SET VIDEO MODE\r | |
959 | // AH = 00h\r | |
960 | // AL = desired video mode (see #0009)\r | |
961 | // Return:AL = video mode flag (Phoenix, AMI BIOS)\r | |
962 | // 20h mode > 7\r | |
963 | // 30h modes 0-5 and 7\r | |
964 | // 3Fh mode 6\r | |
965 | // AL = CRT controller mode byte (Phoenix 386 BIOS v1.10)\r | |
966 | //\r | |
967 | gBS->SetMem (&Regs, sizeof (Regs), 0);\r | |
968 | Regs.H.AH = 0x00;\r | |
969 | Regs.H.AL = (UINT8) NewVideoMode;\r | |
970 | LegacyBios->Int86 (LegacyBios, 0x10, &Regs);\r | |
971 | \r | |
972 | //\r | |
973 | // VIDEO - TEXT-MODE CHARGEN - LOAD ROM 8x16 CHARACTER SET (VGA)\r | |
974 | // AX = 1114h\r | |
975 | // BL = block to load\r | |
976 | // Return:Nothing\r | |
977 | //\r | |
978 | gBS->SetMem (&Regs, sizeof (Regs), 0);\r | |
979 | Regs.H.AH = 0x11;\r | |
980 | Regs.H.AL = 0x14;\r | |
981 | Regs.H.BL = 0;\r | |
982 | LegacyBios->Int86 (LegacyBios, 0x10, &Regs);\r | |
983 | } else {\r | |
984 | //\r | |
985 | // VESA SuperVGA BIOS - SET SuperVGA VIDEO MODE\r | |
986 | // AX = 4F02h\r | |
987 | // BX = mode (see #0082,#0083)\r | |
988 | // bit 15 set means don't clear video memory\r | |
989 | // bit 14 set means enable linear framebuffer mode (VBE v2.0+)\r | |
990 | // Return:AL = 4Fh if function supported\r | |
991 | // AH = status\r | |
992 | // 00h successful\r | |
993 | // 01h failed\r | |
994 | //\r | |
995 | gBS->SetMem (&Regs, sizeof (Regs), 0);\r | |
996 | Regs.X.AX = 0x4F02;\r | |
997 | Regs.X.BX = NewVideoMode;\r | |
998 | LegacyBios->Int86 (LegacyBios, 0x10, &Regs);\r | |
999 | if (Regs.X.AX != 0x004F) {\r | |
1000 | DEBUG ((EFI_D_ERROR, "SORRY: Cannot set to video mode: 0x%04X!\n", NewVideoMode));\r | |
1001 | return (UINT16) -1;\r | |
1002 | }\r | |
1003 | }\r | |
1004 | \r | |
1005 | return OriginalVideoMode;\r | |
1006 | }\r | |
1007 | #endif\r | |
1008 | \r | |
1009 | VOID\r | |
1010 | ExceptionHandler (\r | |
1011 | IN EFI_EXCEPTION_TYPE InterruptType,\r | |
1012 | IN EFI_SYSTEM_CONTEXT SystemContext\r | |
1013 | )\r | |
1014 | {\r | |
1015 | #if CPU_EXCEPTION_VGA_SWITCH\r | |
1016 | UINT16 VideoMode;\r | |
1017 | #endif\r | |
1018 | \r | |
1019 | #if CPU_EXCEPTION_DEBUG_OUTPUT\r | |
1020 | DumpExceptionDataDebugOut (InterruptType, SystemContext);\r | |
1021 | #endif\r | |
1022 | \r | |
1023 | #if CPU_EXCEPTION_VGA_SWITCH\r | |
1024 | //\r | |
1025 | // Switch to text mode for RED-SCREEN output\r | |
1026 | //\r | |
1027 | VideoMode = SwitchVideoMode (0x83);\r | |
1028 | if (VideoMode == (UINT16) -1) {\r | |
1029 | DEBUG ((EFI_D_ERROR, "Video Mode Unknown!\n"));\r | |
1030 | }\r | |
1031 | #endif\r | |
1032 | \r | |
1033 | DumpExceptionDataVgaOut (InterruptType, SystemContext);\r | |
1034 | \r | |
1035 | //\r | |
1036 | // Use this macro to hang so that the compiler does not optimize out\r | |
1037 | // the following RET instructions. This allows us to return if we\r | |
1038 | // have a debugger attached.\r | |
1039 | //\r | |
1040 | CpuDeadLoop ();\r | |
1041 | \r | |
1042 | #if CPU_EXCEPTION_VGA_SWITCH\r | |
1043 | //\r | |
1044 | // Switch back to the old video mode\r | |
1045 | //\r | |
1046 | if (VideoMode != (UINT16)-1) {\r | |
1047 | SwitchVideoMode (VideoMode);\r | |
1048 | }\r | |
1049 | #endif\r | |
1050 | \r | |
1051 | return ;\r | |
1052 | }\r | |
1053 | \r | |
1054 | VOID\r | |
1055 | TimerHandler (\r | |
1056 | IN EFI_EXCEPTION_TYPE InterruptType,\r | |
1057 | IN EFI_SYSTEM_CONTEXT SystemContext\r | |
1058 | )\r | |
1059 | {\r | |
1060 | if (mTimerHandler != NULL) {\r | |
1061 | mTimerHandler (InterruptType, SystemContext);\r | |
1062 | }\r | |
1063 | }\r | |
1064 | \r | |
1065 | EFI_STATUS\r | |
1066 | EFIAPI\r | |
1067 | InitializeCpu (\r | |
1068 | IN EFI_HANDLE ImageHandle,\r | |
1069 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
1070 | )\r | |
1071 | /*++\r | |
1072 | \r | |
1073 | Routine Description:\r | |
1074 | Initialize the state information for the CPU Architectural Protocol\r | |
1075 | \r | |
1076 | Arguments:\r | |
1077 | ImageHandle of the loaded driver\r | |
1078 | Pointer to the System Table\r | |
1079 | \r | |
1080 | Returns:\r | |
1081 | EFI_SUCCESS - thread can be successfully created\r | |
1082 | EFI_OUT_OF_RESOURCES - cannot allocate protocol data structure\r | |
1083 | EFI_DEVICE_ERROR - cannot create the thread\r | |
1084 | \r | |
1085 | --*/\r | |
1086 | {\r | |
1087 | EFI_STATUS Status;\r | |
1088 | EFI_8259_IRQ Irq;\r | |
1089 | UINT32 InterruptVector;\r | |
1090 | \r | |
1091 | //\r | |
1092 | // Find the Legacy8259 protocol.\r | |
1093 | //\r | |
1094 | Status = gBS->LocateProtocol (&gEfiLegacy8259ProtocolGuid, NULL, (VOID **) &gLegacy8259);\r | |
1095 | ASSERT_EFI_ERROR (Status);\r | |
1096 | \r | |
1097 | //\r | |
1098 | // Get the interrupt vector number corresponding to IRQ0 from the 8259 driver\r | |
1099 | //\r | |
1100 | Status = gLegacy8259->GetVector (gLegacy8259, Efi8259Irq0, (UINT8 *) &mTimerVector);\r | |
1101 | ASSERT_EFI_ERROR (Status);\r | |
1102 | \r | |
1103 | //\r | |
1104 | // Reload GDT, IDT\r | |
1105 | //\r | |
1106 | InitDescriptor ();\r | |
1107 | \r | |
1108 | //\r | |
1109 | // Install Exception Handler (0x00 ~ 0x1F)\r | |
1110 | //\r | |
1111 | for (InterruptVector = 0; InterruptVector < 0x20; InterruptVector++) {\r | |
1112 | InstallInterruptHandler (\r | |
1113 | InterruptVector,\r | |
1114 | (VOID (*)(VOID))(UINTN)((UINTN)SystemExceptionHandler + mExceptionCodeSize * InterruptVector)\r | |
1115 | );\r | |
1116 | }\r | |
1117 | \r | |
1118 | //\r | |
1119 | // Install Timer Handler\r | |
1120 | //\r | |
1121 | InstallInterruptHandler (mTimerVector, SystemTimerHandler);\r | |
1122 | \r | |
1123 | //\r | |
1124 | // BUGBUG: We add all other interrupt vector\r | |
1125 | //\r | |
1126 | for (Irq = Efi8259Irq1; Irq <= Efi8259Irq15; Irq++) {\r | |
1127 | InterruptVector = 0;\r | |
1128 | Status = gLegacy8259->GetVector (gLegacy8259, Irq, (UINT8 *) &InterruptVector);\r | |
1129 | ASSERT_EFI_ERROR (Status);\r | |
1130 | InstallInterruptHandler (InterruptVector, SystemTimerHandler);\r | |
1131 | }\r | |
1132 | \r | |
1133 | //\r | |
1134 | // Install CPU Architectural Protocol and the thunk protocol\r | |
1135 | //\r | |
1136 | mHandle = NULL;\r | |
1137 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
1138 | &mHandle,\r | |
1139 | &gEfiCpuArchProtocolGuid,\r | |
1140 | &mCpu,\r | |
1141 | NULL\r | |
1142 | );\r | |
1143 | ASSERT_EFI_ERROR (Status);\r | |
1144 | \r | |
1145 | return EFI_SUCCESS;\r | |
1146 | }\r | |
1147 | \r |