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a47463f2 | 1 | /** @file\r |
2 | CPU DXE Module.\r | |
3 | \r | |
f877f300 | 4 | Copyright (c) 2008 - 2011, Intel Corporation. All rights reserved.<BR>\r |
01a1c0fc | 5 | This program and the accompanying materials\r |
a47463f2 | 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 "CpuDxe.h"\r | |
16 | \r | |
17 | //\r | |
18 | // Global Variables\r | |
19 | //\r | |
20 | IA32_IDT_GATE_DESCRIPTOR gIdtTable[INTERRUPT_VECTOR_NUMBER] = { 0 };\r | |
21 | \r | |
22 | EFI_CPU_INTERRUPT_HANDLER ExternalVectorTable[0x100];\r | |
23 | BOOLEAN InterruptState = FALSE;\r | |
24 | EFI_HANDLE mCpuHandle = NULL;\r | |
25 | BOOLEAN mIsFlushingGCD;\r | |
26 | UINT8 mDefaultMemoryType = MTRR_CACHE_WRITE_BACK;\r | |
27 | UINT64 mValidMtrrAddressMask = MTRR_LIB_CACHE_VALID_ADDRESS;\r | |
28 | UINT64 mValidMtrrBitsMask = MTRR_LIB_MSR_VALID_MASK;\r | |
29 | \r | |
30 | FIXED_MTRR mFixedMtrrTable[] = {\r | |
31 | {\r | |
32 | MTRR_LIB_IA32_MTRR_FIX64K_00000,\r | |
33 | 0,\r | |
34 | 0x10000\r | |
35 | },\r | |
36 | {\r | |
37 | MTRR_LIB_IA32_MTRR_FIX16K_80000,\r | |
38 | 0x80000,\r | |
39 | 0x4000\r | |
40 | },\r | |
41 | {\r | |
42 | MTRR_LIB_IA32_MTRR_FIX16K_A0000,\r | |
43 | 0xA0000,\r | |
44 | 0x4000\r | |
45 | },\r | |
46 | {\r | |
47 | MTRR_LIB_IA32_MTRR_FIX4K_C0000,\r | |
48 | 0xC0000,\r | |
49 | 0x1000\r | |
50 | },\r | |
51 | {\r | |
52 | MTRR_LIB_IA32_MTRR_FIX4K_C8000,\r | |
53 | 0xC8000,\r | |
54 | 0x1000\r | |
55 | },\r | |
56 | {\r | |
57 | MTRR_LIB_IA32_MTRR_FIX4K_D0000,\r | |
58 | 0xD0000,\r | |
59 | 0x1000\r | |
60 | },\r | |
61 | {\r | |
62 | MTRR_LIB_IA32_MTRR_FIX4K_D8000,\r | |
63 | 0xD8000,\r | |
64 | 0x1000\r | |
65 | },\r | |
66 | {\r | |
67 | MTRR_LIB_IA32_MTRR_FIX4K_E0000,\r | |
68 | 0xE0000,\r | |
69 | 0x1000\r | |
70 | },\r | |
71 | {\r | |
72 | MTRR_LIB_IA32_MTRR_FIX4K_E8000,\r | |
73 | 0xE8000,\r | |
74 | 0x1000\r | |
75 | },\r | |
76 | {\r | |
77 | MTRR_LIB_IA32_MTRR_FIX4K_F0000,\r | |
78 | 0xF0000,\r | |
79 | 0x1000\r | |
80 | },\r | |
81 | {\r | |
82 | MTRR_LIB_IA32_MTRR_FIX4K_F8000,\r | |
83 | 0xF8000,\r | |
84 | 0x1000\r | |
85 | },\r | |
86 | };\r | |
87 | \r | |
88 | \r | |
89 | EFI_CPU_ARCH_PROTOCOL gCpu = {\r | |
90 | CpuFlushCpuDataCache,\r | |
91 | CpuEnableInterrupt,\r | |
92 | CpuDisableInterrupt,\r | |
93 | CpuGetInterruptState,\r | |
94 | CpuInit,\r | |
95 | CpuRegisterInterruptHandler,\r | |
96 | CpuGetTimerValue,\r | |
97 | CpuSetMemoryAttributes,\r | |
98 | 1, // NumberOfTimers\r | |
99 | 4 // DmaBufferAlignment\r | |
100 | };\r | |
101 | \r | |
102 | //\r | |
103 | // Error code flag indicating whether or not an error code will be\r | |
104 | // pushed on the stack if an exception occurs.\r | |
105 | //\r | |
106 | // 1 means an error code will be pushed, otherwise 0\r | |
107 | //\r | |
108 | // bit 0 - exception 0\r | |
109 | // bit 1 - exception 1\r | |
110 | // etc.\r | |
111 | //\r | |
112 | UINT32 mErrorCodeFlag = 0x00027d00;\r | |
113 | \r | |
557b970a | 114 | //\r |
115 | // Local function prototypes\r | |
116 | //\r | |
1e51d595 ED |
117 | \r |
118 | /**\r | |
119 | Set Interrupt Descriptor Table Handler Address.\r | |
120 | \r | |
121 | @param Index The Index of the interrupt descriptor table handle.\r | |
122 | @param Handler Handler address.\r | |
123 | \r | |
124 | **/\r | |
557b970a | 125 | VOID\r |
126 | SetInterruptDescriptorTableHandlerAddress (\r | |
127 | IN UINTN Index,\r | |
128 | IN VOID *Handler OPTIONAL\r | |
129 | );\r | |
130 | \r | |
a47463f2 | 131 | //\r |
132 | // CPU Arch Protocol Functions\r | |
133 | //\r | |
134 | \r | |
135 | \r | |
136 | /**\r | |
137 | Common exception handler.\r | |
138 | \r | |
139 | @param InterruptType Exception type\r | |
140 | @param SystemContext EFI_SYSTEM_CONTEXT\r | |
141 | \r | |
142 | **/\r | |
143 | VOID\r | |
144 | EFIAPI\r | |
145 | CommonExceptionHandler (\r | |
146 | IN EFI_EXCEPTION_TYPE InterruptType,\r | |
147 | IN EFI_SYSTEM_CONTEXT SystemContext\r | |
148 | )\r | |
149 | {\r | |
150 | #if defined (MDE_CPU_IA32)\r | |
151 | DEBUG ((\r | |
152 | EFI_D_ERROR,\r | |
153 | "!!!! IA32 Exception Type - %08x !!!!\n",\r | |
154 | InterruptType\r | |
155 | ));\r | |
430fbbe0 | 156 | if ((mErrorCodeFlag & (1 << InterruptType)) != 0) {\r |
a47463f2 | 157 | DEBUG ((\r |
158 | EFI_D_ERROR,\r | |
159 | "ExceptionData - %08x\n",\r | |
160 | SystemContext.SystemContextIa32->ExceptionData\r | |
161 | ));\r | |
162 | }\r | |
163 | DEBUG ((\r | |
164 | EFI_D_ERROR,\r | |
165 | "CS - %04x, EIP - %08x, EFL - %08x, SS - %04x\n",\r | |
166 | SystemContext.SystemContextIa32->Cs,\r | |
167 | SystemContext.SystemContextIa32->Eip,\r | |
168 | SystemContext.SystemContextIa32->Eflags,\r | |
169 | SystemContext.SystemContextIa32->Ss\r | |
170 | ));\r | |
171 | DEBUG ((\r | |
172 | EFI_D_ERROR,\r | |
173 | "DS - %04x, ES - %04x, FS - %04x, GS - %04x\n",\r | |
174 | SystemContext.SystemContextIa32->Ds,\r | |
175 | SystemContext.SystemContextIa32->Es,\r | |
176 | SystemContext.SystemContextIa32->Fs,\r | |
177 | SystemContext.SystemContextIa32->Gs\r | |
178 | ));\r | |
179 | DEBUG ((\r | |
180 | EFI_D_ERROR,\r | |
181 | "EAX - %08x, EBX - %08x, ECX - %08x, EDX - %08x\n",\r | |
182 | SystemContext.SystemContextIa32->Eax,\r | |
183 | SystemContext.SystemContextIa32->Ebx,\r | |
184 | SystemContext.SystemContextIa32->Ecx,\r | |
185 | SystemContext.SystemContextIa32->Edx\r | |
186 | ));\r | |
187 | DEBUG ((\r | |
188 | EFI_D_ERROR,\r | |
189 | "ESP - %08x, EBP - %08x, ESI - %08x, EDI - %08x\n",\r | |
190 | SystemContext.SystemContextIa32->Esp,\r | |
191 | SystemContext.SystemContextIa32->Ebp,\r | |
192 | SystemContext.SystemContextIa32->Esi,\r | |
193 | SystemContext.SystemContextIa32->Edi\r | |
194 | ));\r | |
195 | DEBUG ((\r | |
196 | EFI_D_ERROR,\r | |
197 | "GDT - %08x LIM - %04x, IDT - %08x LIM - %04x\n",\r | |
198 | SystemContext.SystemContextIa32->Gdtr[0],\r | |
199 | SystemContext.SystemContextIa32->Gdtr[1],\r | |
200 | SystemContext.SystemContextIa32->Idtr[0],\r | |
201 | SystemContext.SystemContextIa32->Idtr[1]\r | |
202 | ));\r | |
203 | DEBUG ((\r | |
204 | EFI_D_ERROR,\r | |
205 | "LDT - %08x, TR - %08x\n",\r | |
206 | SystemContext.SystemContextIa32->Ldtr,\r | |
207 | SystemContext.SystemContextIa32->Tr\r | |
208 | ));\r | |
209 | DEBUG ((\r | |
210 | EFI_D_ERROR,\r | |
211 | "CR0 - %08x, CR2 - %08x, CR3 - %08x, CR4 - %08x\n",\r | |
212 | SystemContext.SystemContextIa32->Cr0,\r | |
213 | SystemContext.SystemContextIa32->Cr2,\r | |
214 | SystemContext.SystemContextIa32->Cr3,\r | |
215 | SystemContext.SystemContextIa32->Cr4\r | |
216 | ));\r | |
217 | DEBUG ((\r | |
218 | EFI_D_ERROR,\r | |
219 | "DR0 - %08x, DR1 - %08x, DR2 - %08x, DR3 - %08x\n",\r | |
220 | SystemContext.SystemContextIa32->Dr0,\r | |
221 | SystemContext.SystemContextIa32->Dr1,\r | |
222 | SystemContext.SystemContextIa32->Dr2,\r | |
223 | SystemContext.SystemContextIa32->Dr3\r | |
224 | ));\r | |
225 | DEBUG ((\r | |
226 | EFI_D_ERROR,\r | |
227 | "DR6 - %08x, DR7 - %08x\n",\r | |
228 | SystemContext.SystemContextIa32->Dr6,\r | |
229 | SystemContext.SystemContextIa32->Dr7\r | |
230 | ));\r | |
231 | #elif defined (MDE_CPU_X64)\r | |
232 | DEBUG ((\r | |
233 | EFI_D_ERROR,\r | |
234 | "!!!! X64 Exception Type - %016lx !!!!\n",\r | |
235 | (UINT64)InterruptType\r | |
236 | ));\r | |
430fbbe0 | 237 | if ((mErrorCodeFlag & (1 << InterruptType)) != 0) {\r |
a47463f2 | 238 | DEBUG ((\r |
239 | EFI_D_ERROR,\r | |
240 | "ExceptionData - %016lx\n",\r | |
241 | SystemContext.SystemContextX64->ExceptionData\r | |
242 | ));\r | |
243 | }\r | |
244 | DEBUG ((\r | |
245 | EFI_D_ERROR,\r | |
246 | "RIP - %016lx, RFL - %016lx\n",\r | |
247 | SystemContext.SystemContextX64->Rip,\r | |
248 | SystemContext.SystemContextX64->Rflags\r | |
249 | ));\r | |
250 | DEBUG ((\r | |
251 | EFI_D_ERROR,\r | |
252 | "RAX - %016lx, RCX - %016lx, RDX - %016lx\n",\r | |
253 | SystemContext.SystemContextX64->Rax,\r | |
254 | SystemContext.SystemContextX64->Rcx,\r | |
255 | SystemContext.SystemContextX64->Rdx\r | |
256 | ));\r | |
257 | DEBUG ((\r | |
258 | EFI_D_ERROR,\r | |
259 | "RBX - %016lx, RSP - %016lx, RBP - %016lx\n",\r | |
260 | SystemContext.SystemContextX64->Rbx,\r | |
261 | SystemContext.SystemContextX64->Rsp,\r | |
262 | SystemContext.SystemContextX64->Rbp\r | |
263 | ));\r | |
264 | DEBUG ((\r | |
265 | EFI_D_ERROR,\r | |
266 | "RSI - %016lx, RDI - %016lx\n",\r | |
267 | SystemContext.SystemContextX64->Rsi,\r | |
268 | SystemContext.SystemContextX64->Rdi\r | |
269 | ));\r | |
270 | DEBUG ((\r | |
271 | EFI_D_ERROR,\r | |
272 | "R8 - %016lx, R9 - %016lx, R10 - %016lx\n",\r | |
273 | SystemContext.SystemContextX64->R8,\r | |
274 | SystemContext.SystemContextX64->R9,\r | |
275 | SystemContext.SystemContextX64->R10\r | |
276 | ));\r | |
277 | DEBUG ((\r | |
278 | EFI_D_ERROR,\r | |
279 | "R11 - %016lx, R12 - %016lx, R13 - %016lx\n",\r | |
280 | SystemContext.SystemContextX64->R11,\r | |
281 | SystemContext.SystemContextX64->R12,\r | |
282 | SystemContext.SystemContextX64->R13\r | |
283 | ));\r | |
284 | DEBUG ((\r | |
285 | EFI_D_ERROR,\r | |
286 | "R14 - %016lx, R15 - %016lx\n",\r | |
287 | SystemContext.SystemContextX64->R14,\r | |
288 | SystemContext.SystemContextX64->R15\r | |
289 | ));\r | |
290 | DEBUG ((\r | |
291 | EFI_D_ERROR,\r | |
292 | "CS - %04lx, DS - %04lx, ES - %04lx, FS - %04lx, GS - %04lx, SS - %04lx\n",\r | |
293 | SystemContext.SystemContextX64->Cs,\r | |
294 | SystemContext.SystemContextX64->Ds,\r | |
295 | SystemContext.SystemContextX64->Es,\r | |
296 | SystemContext.SystemContextX64->Fs,\r | |
297 | SystemContext.SystemContextX64->Gs,\r | |
298 | SystemContext.SystemContextX64->Ss\r | |
299 | ));\r | |
300 | DEBUG ((\r | |
301 | EFI_D_ERROR,\r | |
302 | "GDT - %016lx; %04lx, IDT - %016lx; %04lx\n",\r | |
303 | SystemContext.SystemContextX64->Gdtr[0],\r | |
304 | SystemContext.SystemContextX64->Gdtr[1],\r | |
305 | SystemContext.SystemContextX64->Idtr[0],\r | |
306 | SystemContext.SystemContextX64->Idtr[1]\r | |
307 | ));\r | |
308 | DEBUG ((\r | |
309 | EFI_D_ERROR,\r | |
310 | "LDT - %016lx, TR - %016lx\n",\r | |
311 | SystemContext.SystemContextX64->Ldtr,\r | |
312 | SystemContext.SystemContextX64->Tr\r | |
313 | ));\r | |
314 | DEBUG ((\r | |
315 | EFI_D_ERROR,\r | |
316 | "CR0 - %016lx, CR2 - %016lx, CR3 - %016lx\n",\r | |
317 | SystemContext.SystemContextX64->Cr0,\r | |
318 | SystemContext.SystemContextX64->Cr2,\r | |
319 | SystemContext.SystemContextX64->Cr3\r | |
320 | ));\r | |
321 | DEBUG ((\r | |
322 | EFI_D_ERROR,\r | |
323 | "CR4 - %016lx, CR8 - %016lx\n",\r | |
324 | SystemContext.SystemContextX64->Cr4,\r | |
325 | SystemContext.SystemContextX64->Cr8\r | |
326 | ));\r | |
327 | DEBUG ((\r | |
328 | EFI_D_ERROR,\r | |
329 | "DR0 - %016lx, DR1 - %016lx, DR2 - %016lx\n",\r | |
330 | SystemContext.SystemContextX64->Dr0,\r | |
331 | SystemContext.SystemContextX64->Dr1,\r | |
332 | SystemContext.SystemContextX64->Dr2\r | |
333 | ));\r | |
334 | DEBUG ((\r | |
335 | EFI_D_ERROR,\r | |
336 | "DR3 - %016lx, DR6 - %016lx, DR7 - %016lx\n",\r | |
337 | SystemContext.SystemContextX64->Dr3,\r | |
338 | SystemContext.SystemContextX64->Dr6,\r | |
339 | SystemContext.SystemContextX64->Dr7\r | |
340 | ));\r | |
341 | #else\r | |
342 | #error CPU type not supported for exception information dump!\r | |
343 | #endif\r | |
344 | \r | |
345 | //\r | |
346 | // Hang the system with CpuSleep so the processor will enter a lower power\r | |
347 | // state.\r | |
348 | //\r | |
349 | while (TRUE) {\r | |
350 | CpuSleep ();\r | |
351 | };\r | |
352 | }\r | |
353 | \r | |
354 | \r | |
355 | /**\r | |
356 | Flush CPU data cache. If the instruction cache is fully coherent\r | |
357 | with all DMA operations then function can just return EFI_SUCCESS.\r | |
358 | \r | |
359 | @param This Protocol instance structure\r | |
360 | @param Start Physical address to start flushing from.\r | |
361 | @param Length Number of bytes to flush. Round up to chipset\r | |
362 | granularity.\r | |
363 | @param FlushType Specifies the type of flush operation to perform.\r | |
364 | \r | |
365 | @retval EFI_SUCCESS If cache was flushed\r | |
366 | @retval EFI_UNSUPPORTED If flush type is not supported.\r | |
367 | @retval EFI_DEVICE_ERROR If requested range could not be flushed.\r | |
368 | \r | |
369 | **/\r | |
370 | EFI_STATUS\r | |
371 | EFIAPI\r | |
372 | CpuFlushCpuDataCache (\r | |
373 | IN EFI_CPU_ARCH_PROTOCOL *This,\r | |
374 | IN EFI_PHYSICAL_ADDRESS Start,\r | |
375 | IN UINT64 Length,\r | |
376 | IN EFI_CPU_FLUSH_TYPE FlushType\r | |
377 | )\r | |
378 | {\r | |
379 | if (FlushType == EfiCpuFlushTypeWriteBackInvalidate) {\r | |
380 | AsmWbinvd ();\r | |
381 | return EFI_SUCCESS;\r | |
382 | } else if (FlushType == EfiCpuFlushTypeInvalidate) {\r | |
383 | AsmInvd ();\r | |
384 | return EFI_SUCCESS;\r | |
385 | } else {\r | |
386 | return EFI_UNSUPPORTED;\r | |
387 | }\r | |
388 | }\r | |
389 | \r | |
390 | \r | |
391 | /**\r | |
392 | Enables CPU interrupts.\r | |
393 | \r | |
394 | @param This Protocol instance structure\r | |
395 | \r | |
396 | @retval EFI_SUCCESS If interrupts were enabled in the CPU\r | |
397 | @retval EFI_DEVICE_ERROR If interrupts could not be enabled on the CPU.\r | |
398 | \r | |
399 | **/\r | |
400 | EFI_STATUS\r | |
401 | EFIAPI\r | |
402 | CpuEnableInterrupt (\r | |
403 | IN EFI_CPU_ARCH_PROTOCOL *This\r | |
404 | )\r | |
405 | {\r | |
406 | EnableInterrupts ();\r | |
407 | \r | |
408 | InterruptState = TRUE;\r | |
409 | return EFI_SUCCESS;\r | |
410 | }\r | |
411 | \r | |
412 | \r | |
413 | /**\r | |
414 | Disables CPU interrupts.\r | |
415 | \r | |
416 | @param This Protocol instance structure\r | |
417 | \r | |
418 | @retval EFI_SUCCESS If interrupts were disabled in the CPU.\r | |
419 | @retval EFI_DEVICE_ERROR If interrupts could not be disabled on the CPU.\r | |
420 | \r | |
421 | **/\r | |
422 | EFI_STATUS\r | |
423 | EFIAPI\r | |
424 | CpuDisableInterrupt (\r | |
425 | IN EFI_CPU_ARCH_PROTOCOL *This\r | |
426 | )\r | |
427 | {\r | |
428 | DisableInterrupts ();\r | |
429 | \r | |
430 | InterruptState = FALSE;\r | |
431 | return EFI_SUCCESS;\r | |
432 | }\r | |
433 | \r | |
434 | \r | |
435 | /**\r | |
436 | Return the state of interrupts.\r | |
437 | \r | |
438 | @param This Protocol instance structure\r | |
439 | @param State Pointer to the CPU's current interrupt state\r | |
440 | \r | |
441 | @retval EFI_SUCCESS If interrupts were disabled in the CPU.\r | |
442 | @retval EFI_INVALID_PARAMETER State is NULL.\r | |
443 | \r | |
444 | **/\r | |
445 | EFI_STATUS\r | |
446 | EFIAPI\r | |
447 | CpuGetInterruptState (\r | |
448 | IN EFI_CPU_ARCH_PROTOCOL *This,\r | |
449 | OUT BOOLEAN *State\r | |
450 | )\r | |
451 | {\r | |
452 | if (State == NULL) {\r | |
453 | return EFI_INVALID_PARAMETER;\r | |
454 | }\r | |
455 | \r | |
456 | *State = InterruptState;\r | |
457 | return EFI_SUCCESS;\r | |
458 | }\r | |
459 | \r | |
460 | \r | |
461 | /**\r | |
462 | Generates an INIT to the CPU.\r | |
463 | \r | |
464 | @param This Protocol instance structure\r | |
465 | @param InitType Type of CPU INIT to perform\r | |
466 | \r | |
467 | @retval EFI_SUCCESS If CPU INIT occurred. This value should never be\r | |
468 | seen.\r | |
469 | @retval EFI_DEVICE_ERROR If CPU INIT failed.\r | |
470 | @retval EFI_UNSUPPORTED Requested type of CPU INIT not supported.\r | |
471 | \r | |
472 | **/\r | |
473 | EFI_STATUS\r | |
474 | EFIAPI\r | |
475 | CpuInit (\r | |
476 | IN EFI_CPU_ARCH_PROTOCOL *This,\r | |
477 | IN EFI_CPU_INIT_TYPE InitType\r | |
478 | )\r | |
479 | {\r | |
480 | return EFI_UNSUPPORTED;\r | |
481 | }\r | |
482 | \r | |
483 | \r | |
484 | /**\r | |
485 | Registers a function to be called from the CPU interrupt handler.\r | |
486 | \r | |
487 | @param This Protocol instance structure\r | |
488 | @param InterruptType Defines which interrupt to hook. IA-32\r | |
489 | valid range is 0x00 through 0xFF\r | |
490 | @param InterruptHandler A pointer to a function of type\r | |
491 | EFI_CPU_INTERRUPT_HANDLER that is called\r | |
492 | when a processor interrupt occurs. A null\r | |
493 | pointer is an error condition.\r | |
494 | \r | |
495 | @retval EFI_SUCCESS If handler installed or uninstalled.\r | |
496 | @retval EFI_ALREADY_STARTED InterruptHandler is not NULL, and a handler\r | |
497 | for InterruptType was previously installed.\r | |
498 | @retval EFI_INVALID_PARAMETER InterruptHandler is NULL, and a handler for\r | |
499 | InterruptType was not previously installed.\r | |
500 | @retval EFI_UNSUPPORTED The interrupt specified by InterruptType\r | |
501 | is not supported.\r | |
502 | \r | |
503 | **/\r | |
504 | EFI_STATUS\r | |
505 | EFIAPI\r | |
506 | CpuRegisterInterruptHandler (\r | |
507 | IN EFI_CPU_ARCH_PROTOCOL *This,\r | |
508 | IN EFI_EXCEPTION_TYPE InterruptType,\r | |
509 | IN EFI_CPU_INTERRUPT_HANDLER InterruptHandler\r | |
510 | )\r | |
511 | {\r | |
512 | if (InterruptType < 0 || InterruptType > 0xff) {\r | |
513 | return EFI_UNSUPPORTED;\r | |
514 | }\r | |
515 | \r | |
516 | if (InterruptHandler == NULL && ExternalVectorTable[InterruptType] == NULL) {\r | |
517 | return EFI_INVALID_PARAMETER;\r | |
518 | }\r | |
519 | \r | |
520 | if (InterruptHandler != NULL && ExternalVectorTable[InterruptType] != NULL) {\r | |
521 | return EFI_ALREADY_STARTED;\r | |
522 | }\r | |
523 | \r | |
c52acd89 | 524 | SetInterruptDescriptorTableHandlerAddress ((UINTN)InterruptType, NULL);\r |
a47463f2 | 525 | ExternalVectorTable[InterruptType] = InterruptHandler;\r |
526 | return EFI_SUCCESS;\r | |
527 | }\r | |
528 | \r | |
529 | \r | |
530 | /**\r | |
531 | Returns a timer value from one of the CPU's internal timers. There is no\r | |
532 | inherent time interval between ticks but is a function of the CPU frequency.\r | |
533 | \r | |
534 | @param This - Protocol instance structure.\r | |
535 | @param TimerIndex - Specifies which CPU timer is requested.\r | |
536 | @param TimerValue - Pointer to the returned timer value.\r | |
537 | @param TimerPeriod - A pointer to the amount of time that passes\r | |
538 | in femtoseconds (10-15) for each increment\r | |
539 | of TimerValue. If TimerValue does not\r | |
540 | increment at a predictable rate, then 0 is\r | |
541 | returned. The amount of time that has\r | |
542 | passed between two calls to GetTimerValue()\r | |
543 | can be calculated with the formula\r | |
544 | (TimerValue2 - TimerValue1) * TimerPeriod.\r | |
545 | This parameter is optional and may be NULL.\r | |
546 | \r | |
547 | @retval EFI_SUCCESS - If the CPU timer count was returned.\r | |
548 | @retval EFI_UNSUPPORTED - If the CPU does not have any readable timers.\r | |
549 | @retval EFI_DEVICE_ERROR - If an error occurred while reading the timer.\r | |
550 | @retval EFI_INVALID_PARAMETER - TimerIndex is not valid or TimerValue is NULL.\r | |
551 | \r | |
552 | **/\r | |
553 | EFI_STATUS\r | |
554 | EFIAPI\r | |
555 | CpuGetTimerValue (\r | |
556 | IN EFI_CPU_ARCH_PROTOCOL *This,\r | |
557 | IN UINT32 TimerIndex,\r | |
558 | OUT UINT64 *TimerValue,\r | |
559 | OUT UINT64 *TimerPeriod OPTIONAL\r | |
560 | )\r | |
561 | {\r | |
562 | if (TimerValue == NULL) {\r | |
563 | return EFI_INVALID_PARAMETER;\r | |
564 | }\r | |
565 | \r | |
566 | if (TimerIndex != 0) {\r | |
567 | return EFI_INVALID_PARAMETER;\r | |
568 | }\r | |
569 | \r | |
570 | *TimerValue = AsmReadTsc ();\r | |
571 | \r | |
572 | if (TimerPeriod != NULL) {\r | |
573 | //\r | |
574 | // BugBug: Hard coded. Don't know how to do this generically\r | |
575 | //\r | |
576 | *TimerPeriod = 1000000000;\r | |
577 | }\r | |
578 | \r | |
579 | return EFI_SUCCESS;\r | |
580 | }\r | |
581 | \r | |
582 | \r | |
583 | /**\r | |
4ec21e8b | 584 | Implementation of SetMemoryAttributes() service of CPU Architecture Protocol.\r |
585 | \r | |
586 | This function modifies the attributes for the memory region specified by BaseAddress and\r | |
587 | Length from their current attributes to the attributes specified by Attributes.\r | |
588 | \r | |
589 | @param This The EFI_CPU_ARCH_PROTOCOL instance.\r | |
590 | @param BaseAddress The physical address that is the start address of a memory region.\r | |
591 | @param Length The size in bytes of the memory region.\r | |
592 | @param Attributes The bit mask of attributes to set for the memory region.\r | |
593 | \r | |
594 | @retval EFI_SUCCESS The attributes were set for the memory region.\r | |
595 | @retval EFI_ACCESS_DENIED The attributes for the memory resource range specified by\r | |
596 | BaseAddress and Length cannot be modified.\r | |
597 | @retval EFI_INVALID_PARAMETER Length is zero.\r | |
598 | Attributes specified an illegal combination of attributes that\r | |
599 | cannot be set together.\r | |
600 | @retval EFI_OUT_OF_RESOURCES There are not enough system resources to modify the attributes of\r | |
601 | the memory resource range.\r | |
602 | @retval EFI_UNSUPPORTED The processor does not support one or more bytes of the memory\r | |
603 | resource range specified by BaseAddress and Length.\r | |
604 | The bit mask of attributes is not support for the memory resource\r | |
605 | range specified by BaseAddress and Length.\r | |
a47463f2 | 606 | \r |
607 | **/\r | |
608 | EFI_STATUS\r | |
609 | EFIAPI\r | |
610 | CpuSetMemoryAttributes (\r | |
611 | IN EFI_CPU_ARCH_PROTOCOL *This,\r | |
612 | IN EFI_PHYSICAL_ADDRESS BaseAddress,\r | |
613 | IN UINT64 Length,\r | |
614 | IN UINT64 Attributes\r | |
615 | )\r | |
616 | {\r | |
617 | RETURN_STATUS Status;\r | |
618 | MTRR_MEMORY_CACHE_TYPE CacheType;\r | |
619 | \r | |
947a573a | 620 | if (!IsMtrrSupported ()) {\r |
621 | return EFI_UNSUPPORTED;\r | |
622 | }\r | |
623 | \r | |
a47463f2 | 624 | //\r |
625 | // If this function is called because GCD SetMemorySpaceAttributes () is called\r | |
626 | // by RefreshGcdMemoryAttributes (), then we are just synchronzing GCD memory\r | |
627 | // map with MTRR values. So there is no need to modify MTRRs, just return immediately\r | |
628 | // to avoid unnecessary computing.\r | |
629 | //\r | |
630 | if (mIsFlushingGCD) {\r | |
631 | DEBUG((EFI_D_ERROR, " Flushing GCD\n"));\r | |
632 | return EFI_SUCCESS;\r | |
633 | }\r | |
634 | \r | |
635 | switch (Attributes) {\r | |
636 | case EFI_MEMORY_UC:\r | |
637 | CacheType = CacheUncacheable;\r | |
638 | break;\r | |
639 | \r | |
640 | case EFI_MEMORY_WC:\r | |
641 | CacheType = CacheWriteCombining;\r | |
642 | break;\r | |
643 | \r | |
644 | case EFI_MEMORY_WT:\r | |
645 | CacheType = CacheWriteThrough;\r | |
646 | break;\r | |
647 | \r | |
648 | case EFI_MEMORY_WP:\r | |
649 | CacheType = CacheWriteProtected;\r | |
650 | break;\r | |
651 | \r | |
652 | case EFI_MEMORY_WB:\r | |
653 | CacheType = CacheWriteBack;\r | |
654 | break;\r | |
655 | \r | |
4ec21e8b | 656 | case EFI_MEMORY_UCE:\r |
657 | case EFI_MEMORY_RP:\r | |
658 | case EFI_MEMORY_XP:\r | |
659 | case EFI_MEMORY_RUNTIME:\r | |
a47463f2 | 660 | return EFI_UNSUPPORTED;\r |
4ec21e8b | 661 | \r |
662 | default:\r | |
663 | return EFI_INVALID_PARAMETER;\r | |
a47463f2 | 664 | }\r |
665 | //\r | |
666 | // call MTRR libary function\r | |
667 | //\r | |
f877f300 | 668 | Status = MtrrSetMemoryAttribute (\r |
a47463f2 | 669 | BaseAddress,\r |
670 | Length,\r | |
671 | CacheType\r | |
672 | );\r | |
673 | \r | |
a47463f2 | 674 | return (EFI_STATUS) Status;\r |
675 | }\r | |
676 | \r | |
677 | /**\r | |
678 | Initializes the valid bits mask and valid address mask for MTRRs.\r | |
679 | \r | |
680 | This function initializes the valid bits mask and valid address mask for MTRRs.\r | |
681 | \r | |
682 | **/\r | |
683 | VOID\r | |
684 | InitializeMtrrMask (\r | |
685 | VOID\r | |
686 | )\r | |
687 | {\r | |
688 | UINT32 RegEax;\r | |
689 | UINT8 PhysicalAddressBits;\r | |
690 | \r | |
691 | AsmCpuid (0x80000000, &RegEax, NULL, NULL, NULL);\r | |
692 | \r | |
693 | if (RegEax >= 0x80000008) {\r | |
694 | AsmCpuid (0x80000008, &RegEax, NULL, NULL, NULL);\r | |
695 | \r | |
696 | PhysicalAddressBits = (UINT8) RegEax;\r | |
697 | \r | |
698 | mValidMtrrBitsMask = LShiftU64 (1, PhysicalAddressBits) - 1;\r | |
699 | mValidMtrrAddressMask = mValidMtrrBitsMask & 0xfffffffffffff000ULL;\r | |
700 | } else {\r | |
701 | mValidMtrrBitsMask = MTRR_LIB_MSR_VALID_MASK;\r | |
702 | mValidMtrrAddressMask = MTRR_LIB_CACHE_VALID_ADDRESS;\r | |
703 | }\r | |
704 | }\r | |
705 | \r | |
706 | /**\r | |
430fbbe0 | 707 | Gets GCD Mem Space type from MTRR Type.\r |
a47463f2 | 708 | \r |
430fbbe0 | 709 | This function gets GCD Mem Space type from MTRR Type.\r |
a47463f2 | 710 | \r |
430fbbe0 | 711 | @param MtrrAttributes MTRR memory type\r |
a47463f2 | 712 | \r |
713 | @return GCD Mem Space type\r | |
714 | \r | |
715 | **/\r | |
716 | UINT64\r | |
717 | GetMemorySpaceAttributeFromMtrrType (\r | |
718 | IN UINT8 MtrrAttributes\r | |
719 | )\r | |
720 | {\r | |
721 | switch (MtrrAttributes) {\r | |
722 | case MTRR_CACHE_UNCACHEABLE:\r | |
723 | return EFI_MEMORY_UC;\r | |
724 | case MTRR_CACHE_WRITE_COMBINING:\r | |
725 | return EFI_MEMORY_WC;\r | |
726 | case MTRR_CACHE_WRITE_THROUGH:\r | |
727 | return EFI_MEMORY_WT;\r | |
728 | case MTRR_CACHE_WRITE_PROTECTED:\r | |
729 | return EFI_MEMORY_WP;\r | |
730 | case MTRR_CACHE_WRITE_BACK:\r | |
731 | return EFI_MEMORY_WB;\r | |
732 | default:\r | |
733 | return 0;\r | |
734 | }\r | |
735 | }\r | |
736 | \r | |
737 | /**\r | |
738 | Searches memory descriptors covered by given memory range.\r | |
739 | \r | |
740 | This function searches into the Gcd Memory Space for descriptors\r | |
741 | (from StartIndex to EndIndex) that contains the memory range\r | |
742 | specified by BaseAddress and Length.\r | |
743 | \r | |
744 | @param MemorySpaceMap Gcd Memory Space Map as array.\r | |
745 | @param NumberOfDescriptors Number of descriptors in map.\r | |
746 | @param BaseAddress BaseAddress for the requested range.\r | |
747 | @param Length Length for the requested range.\r | |
748 | @param StartIndex Start index into the Gcd Memory Space Map.\r | |
749 | @param EndIndex End index into the Gcd Memory Space Map.\r | |
750 | \r | |
751 | @retval EFI_SUCCESS Search successfully.\r | |
752 | @retval EFI_NOT_FOUND The requested descriptors does not exist.\r | |
753 | \r | |
754 | **/\r | |
755 | EFI_STATUS\r | |
756 | SearchGcdMemorySpaces (\r | |
757 | IN EFI_GCD_MEMORY_SPACE_DESCRIPTOR *MemorySpaceMap,\r | |
758 | IN UINTN NumberOfDescriptors,\r | |
759 | IN EFI_PHYSICAL_ADDRESS BaseAddress,\r | |
760 | IN UINT64 Length,\r | |
761 | OUT UINTN *StartIndex,\r | |
762 | OUT UINTN *EndIndex\r | |
763 | )\r | |
764 | {\r | |
765 | UINTN Index;\r | |
766 | \r | |
767 | *StartIndex = 0;\r | |
768 | *EndIndex = 0;\r | |
769 | for (Index = 0; Index < NumberOfDescriptors; Index++) {\r | |
770 | if (BaseAddress >= MemorySpaceMap[Index].BaseAddress &&\r | |
771 | BaseAddress < MemorySpaceMap[Index].BaseAddress + MemorySpaceMap[Index].Length) {\r | |
772 | *StartIndex = Index;\r | |
773 | }\r | |
774 | if (BaseAddress + Length - 1 >= MemorySpaceMap[Index].BaseAddress &&\r | |
775 | BaseAddress + Length - 1 < MemorySpaceMap[Index].BaseAddress + MemorySpaceMap[Index].Length) {\r | |
776 | *EndIndex = Index;\r | |
777 | return EFI_SUCCESS;\r | |
778 | }\r | |
779 | }\r | |
780 | return EFI_NOT_FOUND;\r | |
781 | }\r | |
782 | \r | |
783 | /**\r | |
784 | Sets the attributes for a specified range in Gcd Memory Space Map.\r | |
785 | \r | |
786 | This function sets the attributes for a specified range in\r | |
787 | Gcd Memory Space Map.\r | |
788 | \r | |
789 | @param MemorySpaceMap Gcd Memory Space Map as array\r | |
790 | @param NumberOfDescriptors Number of descriptors in map\r | |
791 | @param BaseAddress BaseAddress for the range\r | |
792 | @param Length Length for the range\r | |
793 | @param Attributes Attributes to set\r | |
794 | \r | |
795 | @retval EFI_SUCCESS Memory attributes set successfully\r | |
796 | @retval EFI_NOT_FOUND The specified range does not exist in Gcd Memory Space\r | |
797 | \r | |
798 | **/\r | |
799 | EFI_STATUS\r | |
800 | SetGcdMemorySpaceAttributes (\r | |
801 | IN EFI_GCD_MEMORY_SPACE_DESCRIPTOR *MemorySpaceMap,\r | |
802 | IN UINTN NumberOfDescriptors,\r | |
803 | IN EFI_PHYSICAL_ADDRESS BaseAddress,\r | |
804 | IN UINT64 Length,\r | |
805 | IN UINT64 Attributes\r | |
806 | )\r | |
807 | {\r | |
808 | EFI_STATUS Status;\r | |
809 | UINTN Index;\r | |
810 | UINTN StartIndex;\r | |
811 | UINTN EndIndex;\r | |
812 | EFI_PHYSICAL_ADDRESS RegionStart;\r | |
813 | UINT64 RegionLength;\r | |
814 | \r | |
815 | //\r | |
816 | // Get all memory descriptors covered by the memory range\r | |
817 | //\r | |
818 | Status = SearchGcdMemorySpaces (\r | |
819 | MemorySpaceMap,\r | |
820 | NumberOfDescriptors,\r | |
821 | BaseAddress,\r | |
822 | Length,\r | |
823 | &StartIndex,\r | |
824 | &EndIndex\r | |
825 | );\r | |
826 | if (EFI_ERROR (Status)) {\r | |
827 | return Status;\r | |
828 | }\r | |
829 | \r | |
830 | //\r | |
831 | // Go through all related descriptors and set attributes accordingly\r | |
832 | //\r | |
833 | for (Index = StartIndex; Index <= EndIndex; Index++) {\r | |
834 | if (MemorySpaceMap[Index].GcdMemoryType == EfiGcdMemoryTypeNonExistent) {\r | |
835 | continue;\r | |
836 | }\r | |
837 | //\r | |
838 | // Calculate the start and end address of the overlapping range\r | |
839 | //\r | |
840 | if (BaseAddress >= MemorySpaceMap[Index].BaseAddress) {\r | |
841 | RegionStart = BaseAddress;\r | |
842 | } else {\r | |
843 | RegionStart = MemorySpaceMap[Index].BaseAddress;\r | |
844 | }\r | |
845 | if (BaseAddress + Length - 1 < MemorySpaceMap[Index].BaseAddress + MemorySpaceMap[Index].Length) {\r | |
846 | RegionLength = BaseAddress + Length - RegionStart;\r | |
847 | } else {\r | |
848 | RegionLength = MemorySpaceMap[Index].BaseAddress + MemorySpaceMap[Index].Length - RegionStart;\r | |
849 | }\r | |
850 | //\r | |
851 | // Set memory attributes according to MTRR attribute and the original attribute of descriptor\r | |
852 | //\r | |
853 | gDS->SetMemorySpaceAttributes (\r | |
854 | RegionStart,\r | |
855 | RegionLength,\r | |
856 | (MemorySpaceMap[Index].Attributes & ~EFI_MEMORY_CACHETYPE_MASK) | (MemorySpaceMap[Index].Capabilities & Attributes)\r | |
857 | );\r | |
858 | }\r | |
859 | \r | |
860 | return EFI_SUCCESS;\r | |
861 | }\r | |
862 | \r | |
863 | \r | |
864 | /**\r | |
865 | Refreshes the GCD Memory Space attributes according to MTRRs.\r | |
866 | \r | |
867 | This function refreshes the GCD Memory Space attributes according to MTRRs.\r | |
868 | \r | |
869 | **/\r | |
870 | VOID\r | |
871 | RefreshGcdMemoryAttributes (\r | |
872 | VOID\r | |
873 | )\r | |
874 | {\r | |
875 | EFI_STATUS Status;\r | |
876 | UINTN Index;\r | |
877 | UINTN SubIndex;\r | |
878 | UINT64 RegValue;\r | |
879 | EFI_PHYSICAL_ADDRESS BaseAddress;\r | |
880 | UINT64 Length;\r | |
881 | UINT64 Attributes;\r | |
882 | UINT64 CurrentAttributes;\r | |
883 | UINT8 MtrrType;\r | |
884 | UINTN NumberOfDescriptors;\r | |
885 | EFI_GCD_MEMORY_SPACE_DESCRIPTOR *MemorySpaceMap;\r | |
886 | UINT64 DefaultAttributes;\r | |
6640eb36 | 887 | VARIABLE_MTRR VariableMtrr[MTRR_NUMBER_OF_VARIABLE_MTRR];\r |
a47463f2 | 888 | MTRR_FIXED_SETTINGS MtrrFixedSettings;\r |
3b9be416 | 889 | UINT32 FirmwareVariableMtrrCount;\r |
3b9be416 | 890 | \r |
947a573a | 891 | if (!IsMtrrSupported ()) {\r |
892 | return;\r | |
893 | }\r | |
894 | \r | |
3b9be416 | 895 | FirmwareVariableMtrrCount = GetFirmwareVariableMtrrCount ();\r |
5bdfa4e5 | 896 | ASSERT (FirmwareVariableMtrrCount <= MTRR_NUMBER_OF_VARIABLE_MTRR);\r |
a47463f2 | 897 | \r |
898 | // mIsFlushingGCD = TRUE;\r | |
899 | mIsFlushingGCD = FALSE;\r | |
900 | MemorySpaceMap = NULL;\r | |
901 | \r | |
902 | //\r | |
903 | // Initialize the valid bits mask and valid address mask for MTRRs\r | |
904 | //\r | |
905 | InitializeMtrrMask ();\r | |
906 | \r | |
907 | //\r | |
908 | // Get the memory attribute of variable MTRRs\r | |
909 | //\r | |
910 | MtrrGetMemoryAttributeInVariableMtrr (\r | |
911 | mValidMtrrBitsMask,\r | |
912 | mValidMtrrAddressMask,\r | |
913 | VariableMtrr\r | |
914 | );\r | |
915 | \r | |
916 | //\r | |
917 | // Get the memory space map from GCD\r | |
918 | //\r | |
919 | Status = gDS->GetMemorySpaceMap (\r | |
920 | &NumberOfDescriptors,\r | |
921 | &MemorySpaceMap\r | |
922 | );\r | |
923 | ASSERT_EFI_ERROR (Status);\r | |
924 | \r | |
925 | DefaultAttributes = GetMemorySpaceAttributeFromMtrrType (mDefaultMemoryType);\r | |
926 | \r | |
927 | //\r | |
928 | // Set default attributes to all spaces.\r | |
929 | //\r | |
930 | for (Index = 0; Index < NumberOfDescriptors; Index++) {\r | |
931 | if (MemorySpaceMap[Index].GcdMemoryType == EfiGcdMemoryTypeNonExistent) {\r | |
932 | continue;\r | |
933 | }\r | |
934 | gDS->SetMemorySpaceAttributes (\r | |
935 | MemorySpaceMap[Index].BaseAddress,\r | |
936 | MemorySpaceMap[Index].Length,\r | |
937 | (MemorySpaceMap[Index].Attributes & ~EFI_MEMORY_CACHETYPE_MASK) |\r | |
938 | (MemorySpaceMap[Index].Capabilities & DefaultAttributes)\r | |
939 | );\r | |
940 | }\r | |
941 | \r | |
942 | //\r | |
943 | // Go for variable MTRRs with WB attribute\r | |
944 | //\r | |
3b9be416 | 945 | for (Index = 0; Index < FirmwareVariableMtrrCount; Index++) {\r |
a47463f2 | 946 | if (VariableMtrr[Index].Valid &&\r |
947 | VariableMtrr[Index].Type == MTRR_CACHE_WRITE_BACK) {\r | |
948 | SetGcdMemorySpaceAttributes (\r | |
949 | MemorySpaceMap,\r | |
950 | NumberOfDescriptors,\r | |
951 | VariableMtrr[Index].BaseAddress,\r | |
952 | VariableMtrr[Index].Length,\r | |
953 | EFI_MEMORY_WB\r | |
954 | );\r | |
955 | }\r | |
956 | }\r | |
957 | //\r | |
958 | // Go for variable MTRRs with Non-WB attribute\r | |
959 | //\r | |
3b9be416 | 960 | for (Index = 0; Index < FirmwareVariableMtrrCount; Index++) {\r |
a47463f2 | 961 | if (VariableMtrr[Index].Valid &&\r |
962 | VariableMtrr[Index].Type != MTRR_CACHE_WRITE_BACK) {\r | |
963 | Attributes = GetMemorySpaceAttributeFromMtrrType ((UINT8) VariableMtrr[Index].Type);\r | |
964 | SetGcdMemorySpaceAttributes (\r | |
965 | MemorySpaceMap,\r | |
966 | NumberOfDescriptors,\r | |
967 | VariableMtrr[Index].BaseAddress,\r | |
968 | VariableMtrr[Index].Length,\r | |
969 | Attributes\r | |
970 | );\r | |
971 | }\r | |
972 | }\r | |
973 | \r | |
974 | //\r | |
975 | // Go for fixed MTRRs\r | |
976 | //\r | |
977 | Attributes = 0;\r | |
978 | BaseAddress = 0;\r | |
979 | Length = 0;\r | |
980 | MtrrGetFixedMtrr (&MtrrFixedSettings);\r | |
981 | for (Index = 0; Index < MTRR_NUMBER_OF_FIXED_MTRR; Index++) {\r | |
982 | RegValue = MtrrFixedSettings.Mtrr[Index];\r | |
983 | //\r | |
984 | // Check for continuous fixed MTRR sections\r | |
985 | //\r | |
986 | for (SubIndex = 0; SubIndex < 8; SubIndex++) {\r | |
987 | MtrrType = (UINT8) RShiftU64 (RegValue, SubIndex * 8);\r | |
988 | CurrentAttributes = GetMemorySpaceAttributeFromMtrrType (MtrrType);\r | |
989 | if (Length == 0) {\r | |
990 | //\r | |
991 | // A new MTRR attribute begins\r | |
992 | //\r | |
993 | Attributes = CurrentAttributes;\r | |
994 | } else {\r | |
995 | //\r | |
996 | // If fixed MTRR attribute changed, then set memory attribute for previous atrribute\r | |
997 | //\r | |
998 | if (CurrentAttributes != Attributes) {\r | |
999 | SetGcdMemorySpaceAttributes (\r | |
1000 | MemorySpaceMap,\r | |
1001 | NumberOfDescriptors,\r | |
1002 | BaseAddress,\r | |
1003 | Length,\r | |
1004 | Attributes\r | |
1005 | );\r | |
1006 | BaseAddress = mFixedMtrrTable[Index].BaseAddress + mFixedMtrrTable[Index].Length * SubIndex;\r | |
1007 | Length = 0;\r | |
1008 | Attributes = CurrentAttributes;\r | |
1009 | }\r | |
1010 | }\r | |
1011 | Length += mFixedMtrrTable[Index].Length;\r | |
1012 | }\r | |
1013 | }\r | |
1014 | //\r | |
1015 | // Handle the last fixed MTRR region\r | |
1016 | //\r | |
1017 | SetGcdMemorySpaceAttributes (\r | |
1018 | MemorySpaceMap,\r | |
1019 | NumberOfDescriptors,\r | |
1020 | BaseAddress,\r | |
1021 | Length,\r | |
1022 | Attributes\r | |
1023 | );\r | |
1024 | \r | |
1025 | //\r | |
1026 | // Free memory space map allocated by GCD service GetMemorySpaceMap ()\r | |
1027 | //\r | |
1028 | if (MemorySpaceMap != NULL) {\r | |
1029 | FreePool (MemorySpaceMap);\r | |
1030 | }\r | |
1031 | \r | |
1032 | mIsFlushingGCD = FALSE;\r | |
1033 | }\r | |
1034 | \r | |
1e51d595 ED |
1035 | /**\r |
1036 | Set Interrupt Descriptor Table Handler Address.\r | |
1037 | \r | |
1038 | @param Index The Index of the interrupt descriptor table handle.\r | |
1039 | @param Handler Handler address.\r | |
a47463f2 | 1040 | \r |
1e51d595 | 1041 | **/\r |
557b970a | 1042 | VOID\r |
1043 | SetInterruptDescriptorTableHandlerAddress (\r | |
1044 | IN UINTN Index,\r | |
1045 | IN VOID *Handler OPTIONAL\r | |
1046 | )\r | |
1047 | {\r | |
1048 | UINTN UintnHandler;\r | |
1049 | \r | |
1050 | if (Handler != NULL) {\r | |
1051 | UintnHandler = (UINTN) Handler;\r | |
1052 | } else {\r | |
1053 | UintnHandler = ((UINTN) AsmIdtVector00) + (8 * Index);\r | |
1054 | }\r | |
1055 | \r | |
1056 | gIdtTable[Index].Bits.OffsetLow = (UINT16)UintnHandler;\r | |
1057 | gIdtTable[Index].Bits.Reserved_0 = 0;\r | |
1058 | gIdtTable[Index].Bits.GateType = IA32_IDT_GATE_TYPE_INTERRUPT_32;\r | |
1059 | gIdtTable[Index].Bits.OffsetHigh = (UINT16)(UintnHandler >> 16);\r | |
1060 | #if defined (MDE_CPU_X64)\r | |
1061 | gIdtTable[Index].Bits.OffsetUpper = (UINT32)(UintnHandler >> 32);\r | |
1062 | gIdtTable[Index].Bits.Reserved_1 = 0;\r | |
1063 | #endif\r | |
1064 | }\r | |
1065 | \r | |
1066 | \r | |
a47463f2 | 1067 | /**\r |
1068 | Initialize Interrupt Descriptor Table for interrupt handling.\r | |
1069 | \r | |
1070 | **/\r | |
a47463f2 | 1071 | VOID\r |
1072 | InitInterruptDescriptorTable (\r | |
1073 | VOID\r | |
1074 | )\r | |
1075 | {\r | |
557b970a | 1076 | EFI_STATUS Status;\r |
1077 | IA32_DESCRIPTOR OldIdtPtr;\r | |
1078 | IA32_IDT_GATE_DESCRIPTOR *OldIdt;\r | |
1079 | UINTN OldIdtSize;\r | |
1080 | VOID *IdtPtrAlignmentBuffer;\r | |
1081 | IA32_DESCRIPTOR *IdtPtr;\r | |
1082 | UINTN Index;\r | |
1083 | UINT16 CurrentCs;\r | |
1084 | VOID *IntHandler;\r | |
a47463f2 | 1085 | \r |
1086 | SetMem (ExternalVectorTable, sizeof(ExternalVectorTable), 0);\r | |
1087 | \r | |
1088 | //\r | |
557b970a | 1089 | // Get original IDT address and size.\r |
a47463f2 | 1090 | //\r |
557b970a | 1091 | AsmReadIdtr ((IA32_DESCRIPTOR *) &OldIdtPtr);\r |
1092 | \r | |
1093 | if ((OldIdtPtr.Base != 0) && ((OldIdtPtr.Limit & 7) == 7)) {\r | |
1094 | OldIdt = (IA32_IDT_GATE_DESCRIPTOR*) OldIdtPtr.Base;\r | |
304a39b7 | 1095 | OldIdtSize = (OldIdtPtr.Limit + 1) / sizeof (IA32_IDT_GATE_DESCRIPTOR);\r |
557b970a | 1096 | } else {\r |
1097 | OldIdt = NULL;\r | |
1098 | OldIdtSize = 0;\r | |
a47463f2 | 1099 | }\r |
1100 | \r | |
0564ae5e | 1101 | //\r |
557b970a | 1102 | // Intialize IDT\r |
0564ae5e | 1103 | //\r |
557b970a | 1104 | CurrentCs = AsmReadCs();\r |
1105 | for (Index = 0; Index < INTERRUPT_VECTOR_NUMBER; Index ++) {\r | |
1106 | //\r | |
1107 | // If the old IDT had a handler for this interrupt, then\r | |
1108 | // preserve it.\r | |
1109 | //\r | |
1110 | if (Index < OldIdtSize) {\r | |
1111 | IntHandler = \r | |
1112 | (VOID*) (\r | |
1113 | OldIdt[Index].Bits.OffsetLow +\r | |
1114 | (OldIdt[Index].Bits.OffsetHigh << 16)\r | |
1115 | #if defined (MDE_CPU_X64)\r | |
1116 | + (((UINTN) OldIdt[Index].Bits.OffsetUpper) << 32)\r | |
1117 | #endif\r | |
1118 | );\r | |
1119 | } else {\r | |
1120 | IntHandler = NULL;\r | |
1121 | }\r | |
0564ae5e | 1122 | \r |
557b970a | 1123 | gIdtTable[Index].Bits.Selector = CurrentCs;\r |
1124 | gIdtTable[Index].Bits.Reserved_0 = 0;\r | |
1125 | gIdtTable[Index].Bits.GateType = IA32_IDT_GATE_TYPE_INTERRUPT_32;\r | |
1126 | SetInterruptDescriptorTableHandlerAddress (Index, IntHandler);\r | |
0564ae5e | 1127 | }\r |
557b970a | 1128 | \r |
a47463f2 | 1129 | //\r |
1130 | // Load IDT Pointer\r | |
1131 | //\r | |
1132 | IdtPtrAlignmentBuffer = AllocatePool (sizeof (*IdtPtr) + 16);\r | |
1133 | IdtPtr = ALIGN_POINTER (IdtPtrAlignmentBuffer, 16);\r | |
1134 | IdtPtr->Base = (UINT32)(((UINTN)(VOID*) gIdtTable) & (BASE_4GB-1));\r | |
5b7e61a0 | 1135 | IdtPtr->Limit = (UINT16) (sizeof (gIdtTable) - 1);\r |
ea99e00d | 1136 | \r |
a47463f2 | 1137 | AsmWriteIdtr (IdtPtr);\r |
ea99e00d | 1138 | \r |
a47463f2 | 1139 | FreePool (IdtPtrAlignmentBuffer);\r |
1140 | \r | |
1141 | //\r | |
1142 | // Initialize Exception Handlers\r | |
1143 | //\r | |
62ba7e17 | 1144 | for (Index = OldIdtSize; Index < 32; Index++) {\r |
a47463f2 | 1145 | Status = CpuRegisterInterruptHandler (&gCpu, Index, CommonExceptionHandler);\r |
1146 | ASSERT_EFI_ERROR (Status);\r | |
1147 | }\r | |
1148 | \r | |
1149 | //\r | |
1150 | // Set the pointer to the array of C based exception handling routines.\r | |
1151 | //\r | |
1152 | InitializeExternalVectorTablePtr (ExternalVectorTable);\r | |
1153 | \r | |
1154 | }\r | |
1155 | \r | |
1156 | \r | |
32394027 | 1157 | /**\r |
1158 | Callback function for idle events.\r | |
1159 | \r | |
1160 | @param Event Event whose notification function is being invoked.\r | |
1161 | @param Context The pointer to the notification function's context,\r | |
1162 | which is implementation-dependent.\r | |
1163 | \r | |
1164 | **/\r | |
1165 | VOID\r | |
1166 | EFIAPI\r | |
1167 | IdleLoopEventCallback (\r | |
1168 | IN EFI_EVENT Event,\r | |
1169 | IN VOID *Context\r | |
1170 | )\r | |
1171 | {\r | |
1172 | CpuSleep ();\r | |
1173 | }\r | |
1174 | \r | |
1175 | \r | |
a47463f2 | 1176 | /**\r |
1177 | Initialize the state information for the CPU Architectural Protocol.\r | |
1178 | \r | |
1179 | @param ImageHandle Image handle this driver.\r | |
1180 | @param SystemTable Pointer to the System Table.\r | |
1181 | \r | |
1182 | @retval EFI_SUCCESS Thread can be successfully created\r | |
1183 | @retval EFI_OUT_OF_RESOURCES Cannot allocate protocol data structure\r | |
1184 | @retval EFI_DEVICE_ERROR Cannot create the thread\r | |
1185 | \r | |
1186 | **/\r | |
1187 | EFI_STATUS\r | |
1188 | EFIAPI\r | |
1189 | InitializeCpu (\r | |
1190 | IN EFI_HANDLE ImageHandle,\r | |
1191 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
1192 | )\r | |
1193 | {\r | |
1194 | EFI_STATUS Status;\r | |
32394027 | 1195 | EFI_EVENT IdleLoopEvent;\r |
a47463f2 | 1196 | \r |
1197 | //\r | |
1198 | // Make sure interrupts are disabled\r | |
1199 | //\r | |
1200 | DisableInterrupts ();\r | |
1201 | \r | |
1202 | //\r | |
1203 | // Init GDT for DXE\r | |
1204 | //\r | |
1205 | InitGlobalDescriptorTable ();\r | |
1206 | \r | |
1207 | //\r | |
1208 | // Setup IDT pointer, IDT and interrupt entry points\r | |
1209 | //\r | |
1210 | InitInterruptDescriptorTable ();\r | |
1211 | \r | |
1212 | //\r | |
1213 | // Install CPU Architectural Protocol\r | |
1214 | //\r | |
1215 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
1216 | &mCpuHandle,\r | |
1217 | &gEfiCpuArchProtocolGuid, &gCpu,\r | |
1218 | NULL\r | |
1219 | );\r | |
1220 | ASSERT_EFI_ERROR (Status);\r | |
1221 | \r | |
1222 | //\r | |
1223 | // Refresh GCD memory space map according to MTRR value.\r | |
1224 | //\r | |
1225 | RefreshGcdMemoryAttributes ();\r | |
1226 | \r | |
32394027 | 1227 | //\r |
1228 | // Setup a callback for idle events\r | |
1229 | //\r | |
1230 | Status = gBS->CreateEventEx (\r | |
1231 | EVT_NOTIFY_SIGNAL,\r | |
1232 | TPL_NOTIFY,\r | |
1233 | IdleLoopEventCallback,\r | |
1234 | NULL,\r | |
1235 | &gIdleLoopEventGuid,\r | |
1236 | &IdleLoopEvent\r | |
1237 | );\r | |
1238 | ASSERT_EFI_ERROR (Status);\r | |
1239 | \r | |
a47463f2 | 1240 | return Status;\r |
1241 | }\r | |
1242 | \r |