1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
|
/** @file
AML grammar definitions.
Copyright (c) 2010 - 2018, Intel Corporation. All rights reserved. <BR>
Copyright (c) 2019 - 2020, Arm Limited. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include <AmlEncoding/Aml.h>
/** AML grammar encoding table.
The ASL language is a description language, used to define abstract
objects, like devices, thermal zones, etc. and their place in a hierarchical
tree. The following table stores the AML grammar definition. It can be used
to parse an AML bytestream. Each line corresponds to the definition of an
opcode and what is expected to be found with this opcode.
See table 20-440 in the ACPI 6.3 specification s20.3, and the AML
grammar definitions in s20.2.
- OpCode/SubOpCode:
An OpCode/SubOpCode couple allows to identify an object type.
The OpCode and SubOpCode are one byte each. The SubOpCode is
used when the Opcode value is 0x5B (extended OpCode). Otherwise
the SubOpcode is set to 0. If the SubOpCode is 0 in the table
below, there is no SubOpCode in the AML bytestream, only the
OpCode is used to identify the object.
- Fixed arguments:
The fixed arguments follow the OpCode and SubOpCode. Their number
and type can be found in the table below. There can be at the most
6 fixed arguments for an object.
Fixed arguments's type allow to know what is expected in the AML bytestream.
Knowing the size of the incoming element, AML bytes can be packed and parsed
accordingly. These types can be found in the same table 20-440 in the
ACPI 6.3, s20.3 specification.
E.g.: An AML object, a UINT8, a NULL terminated string, etc.
-Attributes:
The attribute field gives additional information on each object. This can
be the presence of a variable list of arguments, the presence of a PkgLen,
etc.
In summary, an AML object is described as:
OpCode [SubOpcode] [PkgLen] [FixedArgs] [VarArgs]
OpCode {1 byte}
[SubOpCode] {1 byte.
Only relevant if the OpCode value is
0x5B (extended OpCode prefix).
Otherwise 0. Most objects don't have one.}
[PkgLen] {Size of the object.
It has a special encoding, cf. ACPI 6.3
specification, s20.2.4 "Package Length
Encoding".
Most objects don't have one.}
[FixedArgs[0..X]] {Fixed list of arguments.
(where X <= 5) Can be other objects or data (a byte,
a string, etc.). They belong to the
current AML object.
The number of fixed arguments varies according
to the object, but it is fixed for each kind of
object.}
[VarArgs] {Variable list of arguments.
They also belong to the current object and can
be objects or data.
Most objects don't have one.}
[ByteList] {This is a sub-type of a variable list of
arguments. It can only be found in buffer
objects.
A ByteList is either a list of bytes or
a list of resource data elements. Resource
data elements have specific opcodes.}
[FieldList] {This is a sub-type of a variable list of
arguments. It can only be found in Fields,
IndexFields and BankFields.
A FieldList is made of FieldElements.
FieldElements have specific opcodes.}
*/
GLOBAL_REMOVE_IF_UNREFERENCED
STATIC
CONST
AML_BYTE_ENCODING mAmlByteEncoding[] = {
// Comment Str OpCode SubOpCode MaxIndex NameIndex 0 1 2 3 4 5 Attribute
/* 0x00 */ {AML_OPCODE_DEF ("ZeroOp", AML_ZERO_OP), 0, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x01 */ {AML_OPCODE_DEF ("OneOp", AML_ONE_OP), 0, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x06 */ {AML_OPCODE_DEF ("AliasOp", AML_ALIAS_OP), 0, 2, 1, {EAmlName, EAmlName, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, AML_IN_NAMESPACE},
/* 0x08 */ {AML_OPCODE_DEF ("NameOp", AML_NAME_OP), 0, 2, 0, {EAmlName, EAmlObject, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, AML_IN_NAMESPACE},
/* 0x0A */ {AML_OPCODE_DEF ("BytePrefix", AML_BYTE_PREFIX), 0, 1, 0, {EAmlUInt8, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x0B */ {AML_OPCODE_DEF ("WordPrefix", AML_WORD_PREFIX), 0, 1, 0, {EAmlUInt16, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x0C */ {AML_OPCODE_DEF ("DWordPrefix", AML_DWORD_PREFIX), 0, 1, 0, {EAmlUInt32, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x0D */ {AML_OPCODE_DEF ("StringPrefix", AML_STRING_PREFIX), 0, 1, 0, {EAmlString, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x0E */ {AML_OPCODE_DEF ("QWordPrefix", AML_QWORD_PREFIX), 0, 1, 0, {EAmlUInt64, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x10 */ {AML_OPCODE_DEF ("ScopeOp", AML_SCOPE_OP), 0, 1, 0, {EAmlName, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, AML_HAS_PKG_LENGTH | AML_HAS_CHILD_OBJ | AML_IN_NAMESPACE},
/* 0x11 */ {AML_OPCODE_DEF ("BufferOp", AML_BUFFER_OP), 0, 1, 0, {EAmlObject, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, AML_HAS_PKG_LENGTH | AML_HAS_BYTE_LIST},
/* 0x12 */ {AML_OPCODE_DEF ("PackageOp", AML_PACKAGE_OP), 0, 1, 0, {EAmlUInt8, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, AML_HAS_PKG_LENGTH | AML_HAS_CHILD_OBJ},
/* 0x13 */ {AML_OPCODE_DEF ("VarPackageOp", AML_VAR_PACKAGE_OP), 0, 1, 0, {EAmlObject, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, AML_HAS_PKG_LENGTH | AML_HAS_CHILD_OBJ},
/* 0x14 */ {AML_OPCODE_DEF ("MethodOp", AML_METHOD_OP), 0, 2, 0, {EAmlName, EAmlUInt8, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, AML_HAS_PKG_LENGTH | AML_HAS_CHILD_OBJ | AML_IN_NAMESPACE},
/* 0x15 */ {AML_OPCODE_DEF ("ExternalOp", AML_EXTERNAL_OP), 0, 3, 0, {EAmlName, EAmlUInt8, EAmlUInt8, EAmlNone, EAmlNone, EAmlNone}, AML_IN_NAMESPACE},
/* 0x2E */ {AML_OPCODE_DEF ("DualNamePrefix", AML_DUAL_NAME_PREFIX), 0, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, AML_IS_NAME_CHAR},
/* 0x2F */ {AML_OPCODE_DEF ("MultiNamePrefix", AML_MULTI_NAME_PREFIX), 0, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, AML_IS_NAME_CHAR},
/* 0x41 */ {AML_OPCODE_DEF ("NameChar_A", 'A'), 0, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, AML_IS_NAME_CHAR},
/* 0x42 */ {AML_OPCODE_DEF ("NameChar_B", 'B'), 0, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, AML_IS_NAME_CHAR},
/* 0x43 */ {AML_OPCODE_DEF ("NameChar_C", 'C'), 0, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, AML_IS_NAME_CHAR},
/* 0x44 */ {AML_OPCODE_DEF ("NameChar_D", 'D'), 0, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, AML_IS_NAME_CHAR},
/* 0x45 */ {AML_OPCODE_DEF ("NameChar_E", 'E'), 0, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, AML_IS_NAME_CHAR},
/* 0x46 */ {AML_OPCODE_DEF ("NameChar_F", 'F'), 0, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, AML_IS_NAME_CHAR},
/* 0x47 */ {AML_OPCODE_DEF ("NameChar_G", 'G'), 0, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, AML_IS_NAME_CHAR},
/* 0x48 */ {AML_OPCODE_DEF ("NameChar_H", 'H'), 0, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, AML_IS_NAME_CHAR},
/* 0x49 */ {AML_OPCODE_DEF ("NameChar_I", 'I'), 0, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, AML_IS_NAME_CHAR},
/* 0x4A */ {AML_OPCODE_DEF ("NameChar_J", 'J'), 0, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, AML_IS_NAME_CHAR},
/* 0x4B */ {AML_OPCODE_DEF ("NameChar_K", 'K'), 0, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, AML_IS_NAME_CHAR},
/* 0x4C */ {AML_OPCODE_DEF ("NameChar_L", 'L'), 0, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, AML_IS_NAME_CHAR},
/* 0x4D */ {AML_OPCODE_DEF ("NameChar_M", 'M'), 0, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, AML_IS_NAME_CHAR},
/* 0x4E */ {AML_OPCODE_DEF ("NameChar_N", 'N'), 0, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, AML_IS_NAME_CHAR},
/* 0x4F */ {AML_OPCODE_DEF ("NameChar_O", 'O'), 0, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, AML_IS_NAME_CHAR},
/* 0x50 */ {AML_OPCODE_DEF ("NameChar_P", 'P'), 0, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, AML_IS_NAME_CHAR},
/* 0x51 */ {AML_OPCODE_DEF ("NameChar_Q", 'Q'), 0, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, AML_IS_NAME_CHAR},
/* 0x52 */ {AML_OPCODE_DEF ("NameChar_R", 'R'), 0, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, AML_IS_NAME_CHAR},
/* 0x53 */ {AML_OPCODE_DEF ("NameChar_S", 'S'), 0, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, AML_IS_NAME_CHAR},
/* 0x54 */ {AML_OPCODE_DEF ("NameChar_T", 'T'), 0, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, AML_IS_NAME_CHAR},
/* 0x55 */ {AML_OPCODE_DEF ("NameChar_U", 'U'), 0, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, AML_IS_NAME_CHAR},
/* 0x56 */ {AML_OPCODE_DEF ("NameChar_V", 'V'), 0, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, AML_IS_NAME_CHAR},
/* 0x57 */ {AML_OPCODE_DEF ("NameChar_W", 'W'), 0, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, AML_IS_NAME_CHAR},
/* 0x58 */ {AML_OPCODE_DEF ("NameChar_X", 'X'), 0, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, AML_IS_NAME_CHAR},
/* 0x59 */ {AML_OPCODE_DEF ("NameChar_Y", 'Y'), 0, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, AML_IS_NAME_CHAR},
/* 0x5A */ {AML_OPCODE_DEF ("NameChar_Z", 'Z'), 0, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, AML_IS_NAME_CHAR},
/* 0x5B 0x01 */ {AML_OPCODE_DEF ("MutexOp", AML_EXT_OP), AML_EXT_MUTEX_OP, 2, 0, {EAmlName, EAmlUInt8, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, AML_IN_NAMESPACE},
/* 0x5B 0x02 */ {AML_OPCODE_DEF ("EventOp", AML_EXT_OP), AML_EXT_EVENT_OP, 1, 0, {EAmlName, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, AML_IN_NAMESPACE},
/* 0x5B 0x12 */ {AML_OPCODE_DEF ("CondRefOfOp", AML_EXT_OP), AML_EXT_COND_REF_OF_OP, 2, 0, {EAmlObject, EAmlObject, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x5B 0x13 */ {AML_OPCODE_DEF ("CreateFieldOp", AML_EXT_OP), AML_EXT_CREATE_FIELD_OP,4, 3, {EAmlObject, EAmlObject, EAmlObject, EAmlName, EAmlNone, EAmlNone}, AML_IN_NAMESPACE},
/* 0x5B 0x1F */ {AML_OPCODE_DEF ("LoadTableOp", AML_EXT_OP), AML_EXT_LOAD_TABLE_OP, 6, 0, {EAmlObject, EAmlObject, EAmlObject, EAmlObject, EAmlObject, EAmlObject}, 0},
/* 0x5B 0x20 */ {AML_OPCODE_DEF ("LoadOp", AML_EXT_OP), AML_EXT_LOAD_OP, 2, 0, {EAmlName, EAmlObject, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x5B 0x21 */ {AML_OPCODE_DEF ("StallOp", AML_EXT_OP), AML_EXT_STALL_OP, 1, 0, {EAmlObject, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x5B 0x22 */ {AML_OPCODE_DEF ("SleepOp", AML_EXT_OP), AML_EXT_SLEEP_OP, 1, 0, {EAmlObject, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x5B 0x23 */ {AML_OPCODE_DEF ("AcquireOp", AML_EXT_OP), AML_EXT_ACQUIRE_OP, 2, 0, {EAmlObject, EAmlUInt16, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x5B 0x24 */ {AML_OPCODE_DEF ("SignalOp", AML_EXT_OP), AML_EXT_SIGNAL_OP, 1, 0, {EAmlObject, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x5B 0x25 */ {AML_OPCODE_DEF ("WaitOp", AML_EXT_OP), AML_EXT_WAIT_OP, 2, 0, {EAmlObject, EAmlObject, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x5B 0x26 */ {AML_OPCODE_DEF ("ResetOp", AML_EXT_OP), AML_EXT_RESET_OP, 1, 0, {EAmlObject, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x5B 0x27 */ {AML_OPCODE_DEF ("ReleaseOp", AML_EXT_OP), AML_EXT_RELEASE_OP, 1, 0, {EAmlObject, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x5B 0x28 */ {AML_OPCODE_DEF ("FromBCDOp", AML_EXT_OP), AML_EXT_FROM_BCD_OP, 2, 0, {EAmlObject, EAmlObject, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x5B 0x29 */ {AML_OPCODE_DEF ("ToBCDOp", AML_EXT_OP), AML_EXT_TO_BCD_OP, 2, 0, {EAmlObject, EAmlObject, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x5B 0x2A */ {AML_OPCODE_DEF ("UnloadOp", AML_EXT_OP), AML_EXT_UNLOAD_OP, 1, 0, {EAmlObject, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x5B 0x30 */ {AML_OPCODE_DEF ("RevisionOp", AML_EXT_OP), AML_EXT_REVISION_OP, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x5B 0x31 */ {AML_OPCODE_DEF ("DebugOp", AML_EXT_OP), AML_EXT_DEBUG_OP, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x5B 0x32 */ {AML_OPCODE_DEF ("FatalOp", AML_EXT_OP), AML_EXT_FATAL_OP, 3, 0, {EAmlUInt8, EAmlUInt32, EAmlObject, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x5B 0x33 */ {AML_OPCODE_DEF ("TimerOp", AML_EXT_OP), AML_EXT_TIMER_OP, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x5B 0x80 */ {AML_OPCODE_DEF ("OpRegionOp", AML_EXT_OP), AML_EXT_REGION_OP, 4, 0, {EAmlName, EAmlUInt8, EAmlObject, EAmlObject, EAmlNone, EAmlNone}, AML_IN_NAMESPACE},
/* 0x5B 0x81 */ {AML_OPCODE_DEF ("FieldOp", AML_EXT_OP), AML_EXT_FIELD_OP, 2, 0, {EAmlName, EAmlUInt8, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, AML_HAS_PKG_LENGTH | AML_HAS_FIELD_LIST},
/* 0x5B 0x82 */ {AML_OPCODE_DEF ("DeviceOp", AML_EXT_OP), AML_EXT_DEVICE_OP, 1, 0, {EAmlName, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, AML_HAS_PKG_LENGTH | AML_HAS_CHILD_OBJ | AML_IN_NAMESPACE},
/* 0x5B 0x83 */ {AML_OPCODE_DEF ("ProcessorOp", AML_EXT_OP), AML_EXT_PROCESSOR_OP, 4, 0, {EAmlName, EAmlUInt8, EAmlUInt32, EAmlUInt8, EAmlNone, EAmlNone}, AML_HAS_PKG_LENGTH | AML_HAS_CHILD_OBJ | AML_IN_NAMESPACE},
/* 0x5B 0x84 */ {AML_OPCODE_DEF ("PowerResOp", AML_EXT_OP), AML_EXT_POWER_RES_OP, 3, 0, {EAmlName, EAmlUInt8, EAmlUInt16, EAmlNone, EAmlNone, EAmlNone}, AML_HAS_PKG_LENGTH | AML_HAS_CHILD_OBJ | AML_IN_NAMESPACE},
/* 0x5B 0x85 */ {AML_OPCODE_DEF ("ThermalZoneOp", AML_EXT_OP), AML_EXT_THERMAL_ZONE_OP,1, 0, {EAmlName, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, AML_HAS_PKG_LENGTH | AML_HAS_CHILD_OBJ | AML_IN_NAMESPACE},
/* 0x5B 0x86 */ {AML_OPCODE_DEF ("IndexFieldOp", AML_EXT_OP), AML_EXT_INDEX_FIELD_OP, 3, 0, {EAmlName, EAmlName, EAmlUInt8, EAmlNone, EAmlNone, EAmlNone}, AML_HAS_PKG_LENGTH | AML_HAS_FIELD_LIST},
/* 0x5B 0x87 */ {AML_OPCODE_DEF ("BankFieldOp", AML_EXT_OP), AML_EXT_BANK_FIELD_OP, 4, 0, {EAmlName, EAmlName, EAmlObject, EAmlUInt8, EAmlNone, EAmlNone}, AML_HAS_PKG_LENGTH | AML_HAS_FIELD_LIST},
/* 0x5B 0x88 */ {AML_OPCODE_DEF ("DataRegionOp", AML_EXT_OP), AML_EXT_DATA_REGION_OP, 4, 0, {EAmlName, EAmlObject, EAmlObject, EAmlObject, EAmlNone, EAmlNone}, AML_IN_NAMESPACE},
/* 0x5C */ {AML_OPCODE_DEF ("RootChar", AML_ROOT_CHAR), 0, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, AML_IS_NAME_CHAR},
/* 0x5E */ {AML_OPCODE_DEF ("ParentPrefixChar", AML_PARENT_PREFIX_CHAR), 0, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, AML_IS_NAME_CHAR},
/* 0x5F */ {AML_OPCODE_DEF ("NameChar", '_'), 0, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, AML_IS_NAME_CHAR},
/* 0x60 */ {AML_OPCODE_DEF ("Local0Op", AML_LOCAL0), 0, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x61 */ {AML_OPCODE_DEF ("Local1Op", AML_LOCAL1), 0, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x62 */ {AML_OPCODE_DEF ("Local2Op", AML_LOCAL2), 0, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x63 */ {AML_OPCODE_DEF ("Local3Op", AML_LOCAL3), 0, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x64 */ {AML_OPCODE_DEF ("Local4Op", AML_LOCAL4), 0, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x65 */ {AML_OPCODE_DEF ("Local5Op", AML_LOCAL5), 0, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x66 */ {AML_OPCODE_DEF ("Local6Op", AML_LOCAL6), 0, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x67 */ {AML_OPCODE_DEF ("Local7Op", AML_LOCAL7), 0, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x68 */ {AML_OPCODE_DEF ("Arg0Op", AML_ARG0), 0, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x69 */ {AML_OPCODE_DEF ("Arg1Op", AML_ARG1), 0, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x6A */ {AML_OPCODE_DEF ("Arg2Op", AML_ARG2), 0, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x6B */ {AML_OPCODE_DEF ("Arg3Op", AML_ARG3), 0, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x6C */ {AML_OPCODE_DEF ("Arg4Op", AML_ARG4), 0, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x6D */ {AML_OPCODE_DEF ("Arg5Op", AML_ARG5), 0, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x6E */ {AML_OPCODE_DEF ("Arg6Op", AML_ARG6), 0, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x70 */ {AML_OPCODE_DEF ("StoreOp", AML_STORE_OP), 0, 2, 0, {EAmlObject, EAmlObject, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x71 */ {AML_OPCODE_DEF ("RefOfOp", AML_REF_OF_OP), 0, 1, 0, {EAmlObject, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x72 */ {AML_OPCODE_DEF ("AddOp", AML_ADD_OP), 0, 3, 0, {EAmlObject, EAmlObject, EAmlObject, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x73 */ {AML_OPCODE_DEF ("ConcatOp", AML_CONCAT_OP), 0, 3, 0, {EAmlObject, EAmlObject, EAmlObject, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x74 */ {AML_OPCODE_DEF ("SubtractOp", AML_SUBTRACT_OP), 0, 3, 0, {EAmlObject, EAmlObject, EAmlObject, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x75 */ {AML_OPCODE_DEF ("IncrementOp", AML_INCREMENT_OP), 0, 1, 0, {EAmlObject, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x76 */ {AML_OPCODE_DEF ("DecrementOp", AML_DECREMENT_OP), 0, 1, 0, {EAmlObject, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x77 */ {AML_OPCODE_DEF ("MultiplyOp", AML_MULTIPLY_OP), 0, 3, 0, {EAmlObject, EAmlObject, EAmlObject, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x78 */ {AML_OPCODE_DEF ("DivideOp", AML_DIVIDE_OP), 0, 4, 0, {EAmlObject, EAmlObject, EAmlObject, EAmlObject, EAmlNone, EAmlNone}, 0},
/* 0x79 */ {AML_OPCODE_DEF ("ShiftLeftOp", AML_SHIFT_LEFT_OP), 0, 3, 0, {EAmlObject, EAmlObject, EAmlObject, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x7A */ {AML_OPCODE_DEF ("ShiftRightOp", AML_SHIFT_RIGHT_OP), 0, 3, 0, {EAmlObject, EAmlObject, EAmlObject, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x7B */ {AML_OPCODE_DEF ("AndOp", AML_AND_OP), 0, 3, 0, {EAmlObject, EAmlObject, EAmlObject, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x7C */ {AML_OPCODE_DEF ("NAndOp", AML_NAND_OP), 0, 3, 0, {EAmlObject, EAmlObject, EAmlObject, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x7D */ {AML_OPCODE_DEF ("OrOp", AML_OR_OP), 0, 3, 0, {EAmlObject, EAmlObject, EAmlObject, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x7E */ {AML_OPCODE_DEF ("NorOp", AML_NOR_OP), 0, 3, 0, {EAmlObject, EAmlObject, EAmlObject, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x7F */ {AML_OPCODE_DEF ("XOrOp", AML_XOR_OP), 0, 3, 0, {EAmlObject, EAmlObject, EAmlObject, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x80 */ {AML_OPCODE_DEF ("NotOp", AML_NOT_OP), 0, 2, 0, {EAmlObject, EAmlObject, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x81 */ {AML_OPCODE_DEF ("FindSetLeftBitOp", AML_FIND_SET_LEFT_BIT_OP), 0, 2, 0, {EAmlObject, EAmlObject, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x82 */ {AML_OPCODE_DEF ("FindSetRightBitOp", AML_FIND_SET_RIGHT_BIT_OP),0, 2, 0, {EAmlObject, EAmlObject, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x83 */ {AML_OPCODE_DEF ("DerefOfOp", AML_DEREF_OF_OP), 0, 1, 0, {EAmlObject, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x84 */ {AML_OPCODE_DEF ("ConcatResOp", AML_CONCAT_RES_OP), 0, 3, 0, {EAmlObject, EAmlObject, EAmlObject, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x85 */ {AML_OPCODE_DEF ("ModOp", AML_MOD_OP), 0, 3, 0, {EAmlObject, EAmlObject, EAmlObject, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x86 */ {AML_OPCODE_DEF ("NotifyOp", AML_NOTIFY_OP), 0, 2, 0, {EAmlObject, EAmlObject, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x87 */ {AML_OPCODE_DEF ("SizeOfOp", AML_SIZE_OF_OP), 0, 1, 0, {EAmlObject, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x88 */ {AML_OPCODE_DEF ("IndexOp", AML_INDEX_OP), 0, 3, 0, {EAmlObject, EAmlObject, EAmlObject, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x89 */ {AML_OPCODE_DEF ("MatchOp", AML_MATCH_OP), 0, 6, 0, {EAmlObject, EAmlUInt8, EAmlObject, EAmlUInt8, EAmlObject, EAmlObject}, 0},
/* 0x8A */ {AML_OPCODE_DEF ("CreateDWordFieldOp", AML_CREATE_DWORD_FIELD_OP),0, 3, 2, {EAmlObject, EAmlObject, EAmlName, EAmlNone, EAmlNone, EAmlNone}, AML_IN_NAMESPACE},
/* 0x8B */ {AML_OPCODE_DEF ("CreateWordFieldOp", AML_CREATE_WORD_FIELD_OP), 0, 3, 2, {EAmlObject, EAmlObject, EAmlName, EAmlNone, EAmlNone, EAmlNone}, AML_IN_NAMESPACE},
/* 0x8C */ {AML_OPCODE_DEF ("CreateByteFieldOp", AML_CREATE_BYTE_FIELD_OP), 0, 3, 2, {EAmlObject, EAmlObject, EAmlName, EAmlNone, EAmlNone, EAmlNone}, AML_IN_NAMESPACE},
/* 0x8D */ {AML_OPCODE_DEF ("CreateBitFieldOp", AML_CREATE_BIT_FIELD_OP), 0, 3, 2, {EAmlObject, EAmlObject, EAmlName, EAmlNone, EAmlNone, EAmlNone}, AML_IN_NAMESPACE},
/* 0x8E */ {AML_OPCODE_DEF ("ObjectTypeOp", AML_OBJECT_TYPE_OP), 0, 1, 0, {EAmlObject, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x8F */ {AML_OPCODE_DEF ("CreateQWordFieldOp", AML_CREATE_QWORD_FIELD_OP),0, 3, 2, {EAmlObject, EAmlObject, EAmlName, EAmlNone, EAmlNone, EAmlNone}, AML_IN_NAMESPACE},
/* 0x90 */ {AML_OPCODE_DEF ("LAndOp", AML_LAND_OP), 0, 2, 0, {EAmlObject, EAmlObject, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x91 */ {AML_OPCODE_DEF ("LOrOp", AML_LOR_OP), 0, 2, 0, {EAmlObject, EAmlObject, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x92 */ {AML_OPCODE_DEF ("LNotOp", AML_LNOT_OP), 0, 1, 0, {EAmlObject, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x93 */ {AML_OPCODE_DEF ("LEqualOp", AML_LEQUAL_OP), 0, 2, 0, {EAmlObject, EAmlObject, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x94 */ {AML_OPCODE_DEF ("LGreaterOp", AML_LGREATER_OP), 0, 2, 0, {EAmlObject, EAmlObject, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x95 */ {AML_OPCODE_DEF ("LLessOp", AML_LLESS_OP), 0, 2, 0, {EAmlObject, EAmlObject, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x96 */ {AML_OPCODE_DEF ("ToBufferOp", AML_TO_BUFFER_OP), 0, 2, 0, {EAmlObject, EAmlObject, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x97 */ {AML_OPCODE_DEF ("ToDecimalStringOp", AML_TO_DEC_STRING_OP), 0, 2, 0, {EAmlObject, EAmlObject, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x98 */ {AML_OPCODE_DEF ("ToHexStringOp", AML_TO_HEX_STRING_OP), 0, 2, 0, {EAmlObject, EAmlObject, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x99 */ {AML_OPCODE_DEF ("ToIntegerOp", AML_TO_INTEGER_OP), 0, 2, 0, {EAmlObject, EAmlObject, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x9C */ {AML_OPCODE_DEF ("ToStringOp", AML_TO_STRING_OP), 0, 3, 0, {EAmlObject, EAmlObject, EAmlObject, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x9D */ {AML_OPCODE_DEF ("CopyObjectOp", AML_COPY_OBJECT_OP), 0, 2, 0, {EAmlObject, EAmlObject, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x9E */ {AML_OPCODE_DEF ("MidOp", AML_MID_OP), 0, 3, 0, {EAmlObject, EAmlObject, EAmlObject, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0x9F */ {AML_OPCODE_DEF ("ContinueOp", AML_CONTINUE_OP), 0, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0xA0 */ {AML_OPCODE_DEF ("IfOp", AML_IF_OP), 0, 1, 0, {EAmlObject, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, AML_HAS_PKG_LENGTH | AML_HAS_CHILD_OBJ},
/* 0xA1 */ {AML_OPCODE_DEF ("ElseOp", AML_ELSE_OP), 0, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, AML_HAS_PKG_LENGTH | AML_HAS_CHILD_OBJ},
/* 0xA2 */ {AML_OPCODE_DEF ("WhileOp", AML_WHILE_OP), 0, 1, 0, {EAmlObject, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, AML_HAS_PKG_LENGTH | AML_HAS_CHILD_OBJ},
/* 0xA3 */ {AML_OPCODE_DEF ("NoopOp", AML_NOOP_OP), 0, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0xA4 */ {AML_OPCODE_DEF ("ReturnOp", AML_RETURN_OP), 0, 1, 0, {EAmlObject, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0xA5 */ {AML_OPCODE_DEF ("BreakOp", AML_BREAK_OP), 0, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0xCC */ {AML_OPCODE_DEF ("BreakPointOp", AML_BREAK_POINT_OP), 0, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
/* 0xD0 */ {AML_OPCODE_DEF ("MethodInvocOp", AML_METHOD_INVOC_OP), 0, 2, 0, {EAmlName, EAmlUInt8, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, AML_IS_PSEUDO_OPCODE | AML_HAS_CHILD_OBJ},
/* 0xFF */ {AML_OPCODE_DEF ("OnesOp", AML_ONES_OP), 0, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, 0},
};
/** AML grammar encoding for field elements.
Some AML objects are expecting a FieldList. They are referred in this library
as field nodes. These objects have the following opcodes:
- FieldOp;
- IndexFieldOp;
- BankFieldOp.
In the AML grammar encoding table, they have the AML_HAS_FIELD_LIST
attribute.
A field list is made of field elements.
According to the ACPI 6.3 specification, s20.2.5.2 "Named Objects Encoding",
field elements can be:
- NamedField := NameSeg PkgLength;
- ReservedField := 0x00 PkgLength;
- AccessField := 0x01 AccessType AccessAttrib;
- ConnectField := <0x02 NameString> | <0x02 BufferData>;
- ExtendedAccessField := 0x03 AccessType ExtendedAccessAttrib AccessLength.
A small set of opcodes describes field elements. They are referred in this
library as field opcodes.
The NamedField field element doesn't have a field opcode. A pseudo
OpCode/SubOpCode couple has been created for it.
Field elements:
- don't have a SubOpCode;
- have at most 3 fixed arguments (6 for object opcodes,
8 for method invocations);
- don't have variable list of arguments;
- are not part of the AML namespace, except NamedField field elements.
*/
GLOBAL_REMOVE_IF_UNREFERENCED
STATIC
CONST
AML_BYTE_ENCODING mAmlFieldEncoding[] = {
// Comment Str OpCode SubOpCode MaxIndex NameIndex 0 1 2 3 4 5 Attribute
/* 0x00 */ {AML_OPCODE_DEF ("FieldReservedOp", AML_FIELD_RESERVED_OP), 0, 0, 0, {EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, AML_IS_FIELD_ELEMENT | AML_HAS_PKG_LENGTH},
/* 0x01 */ {AML_OPCODE_DEF ("FieldAccessOp", AML_FIELD_ACCESS_OP), 0, 2, 0, {EAmlUInt8, EAmlUInt8, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, AML_IS_FIELD_ELEMENT},
/* 0x02 */ {AML_OPCODE_DEF ("FieldConnectionOp", AML_FIELD_CONNECTION_OP), 0, 1, 0, {EAmlObject, EAmlNone, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, AML_IS_FIELD_ELEMENT},
/* 0x03 */ {AML_OPCODE_DEF ("FieldExtAccessOp", AML_FIELD_EXT_ACCESS_OP), 0, 3, 0, {EAmlUInt8, EAmlUInt8, EAmlUInt8, EAmlNone, EAmlNone, EAmlNone}, AML_IS_FIELD_ELEMENT},
/* 0x04 */ {AML_OPCODE_DEF ("FieldNamed", AML_FIELD_NAMED_OP), 0, 2, 0, {EAmlName, EAmlFieldPkgLen, EAmlNone, EAmlNone, EAmlNone, EAmlNone}, AML_IS_FIELD_ELEMENT | AML_IS_PSEUDO_OPCODE | AML_IN_NAMESPACE}
};
/** Get the AML_BYTE_ENCODING entry in the AML encoding table.
Note: For Pseudo OpCodes this function returns NULL.
@param [in] Buffer Pointer to an OpCode/SubOpCode couple.
If *Buffer = 0x5b (extended OpCode),
Buffer must be at least two bytes long.
@return The corresponding AML_BYTE_ENCODING entry.
NULL if not found.
**/
CONST
AML_BYTE_ENCODING *
EFIAPI
AmlGetByteEncoding (
IN CONST UINT8 * Buffer
)
{
UINT8 OpCode;
UINT8 SubOpCode;
UINT32 Index;
if (Buffer == NULL) {
ASSERT (0);
return NULL;
}
// Get OpCode and SubOpCode.
OpCode = Buffer[0];
if (OpCode == AML_EXT_OP) {
SubOpCode = Buffer[1];
} else {
SubOpCode = 0;
}
// Search the table.
for (Index = 0;
Index < (sizeof (mAmlByteEncoding) / sizeof (mAmlByteEncoding[0]));
Index++) {
if ((mAmlByteEncoding[Index].OpCode == OpCode) &&
(mAmlByteEncoding[Index].SubOpCode == SubOpCode)) {
if ((mAmlByteEncoding[Index].Attribute & AML_IS_PSEUDO_OPCODE) ==
AML_IS_PSEUDO_OPCODE) {
// A pseudo OpCode cannot be parsed as it is internal to this library.
// The MethodInvocation encoding can be detected by NameSpace lookup.
ASSERT (0);
return NULL;
}
return &mAmlByteEncoding[Index];
}
}
return NULL;
}
/** Get the AML_BYTE_ENCODING entry in the AML encoding table
by providing an OpCode/SubOpCode couple.
@param [in] OpCode OpCode.
@param [in] SubOpCode SubOpCode.
@return The corresponding AML_BYTE_ENCODING entry.
NULL if not found.
**/
CONST
AML_BYTE_ENCODING *
EFIAPI
AmlGetByteEncodingByOpCode (
IN UINT8 OpCode,
IN UINT8 SubOpCode
)
{
UINT32 Index;
// Search the table.
for (Index = 0;
Index < (sizeof (mAmlByteEncoding) / sizeof (mAmlByteEncoding[0]));
Index++) {
if ((mAmlByteEncoding[Index].OpCode == OpCode) &&
(mAmlByteEncoding[Index].SubOpCode == SubOpCode)) {
return &mAmlByteEncoding[Index];
}
}
return NULL;
}
/** Get the AML_BYTE_ENCODING entry in the field encoding table.
Note: For Pseudo OpCodes this function returns NULL.
@param [in] Buffer Pointer to a field OpCode.
No SubOpCode is expected.
@return The corresponding AML_BYTE_ENCODING entry
in the field encoding table.
NULL if not found.
**/
CONST
AML_BYTE_ENCODING *
EFIAPI
AmlGetFieldEncoding (
IN CONST UINT8 * Buffer
)
{
UINT8 OpCode;
UINT32 Index;
if (Buffer == NULL) {
ASSERT (0);
return NULL;
}
// Get OpCode.
OpCode = *Buffer;
// Search in the table.
for (Index = 0;
Index < (sizeof (mAmlFieldEncoding) / sizeof (mAmlFieldEncoding[0]));
Index++) {
if (mAmlFieldEncoding[Index].OpCode == OpCode) {
if ((mAmlFieldEncoding[Index].Attribute & AML_IS_PSEUDO_OPCODE) ==
AML_IS_PSEUDO_OPCODE) {
// A pseudo OpCode cannot be parsed as it is internal to this library.
// The NamedField encoding can be detected because it begins with a
// char.
ASSERT (0);
return NULL;
}
return &mAmlFieldEncoding[Index];
}
}
return NULL;
}
/** Get the AML_BYTE_ENCODING entry in the field encoding table
by providing an OpCode/SubOpCode couple.
@param [in] OpCode OpCode.
@param [in] SubOpCode SubOpCode.
@return The corresponding AML_BYTE_ENCODING entry
in the field encoding table.
NULL if not found.
**/
CONST
AML_BYTE_ENCODING *
EFIAPI
AmlGetFieldEncodingByOpCode (
IN UINT8 OpCode,
IN UINT8 SubOpCode
)
{
UINT32 Index;
// Search the table.
for (Index = 0;
Index < (sizeof (mAmlFieldEncoding) / sizeof (mAmlFieldEncoding[0]));
Index++) {
if ((mAmlFieldEncoding[Index].OpCode == OpCode) &&
(mAmlFieldEncoding[Index].SubOpCode == SubOpCode)) {
return &mAmlFieldEncoding[Index];
}
}
return NULL;
}
// Enable this function for debug.
#if !defined (MDEPKG_NDEBUG)
/** Look for an OpCode/SubOpCode couple in the AML grammar,
and return a corresponding string.
@param [in] OpCode The OpCode.
@param [in] SubOpCode The SubOpCode.
@return A string describing the OpCode/SubOpCode couple.
NULL if not found.
**/
CONST
CHAR8 *
AmlGetOpCodeStr (
IN UINT8 OpCode,
IN UINT8 SubOpCode
)
{
EAML_PARSE_INDEX Index;
// Search the table.
for (Index = 0;
Index < (sizeof (mAmlByteEncoding) / sizeof (mAmlByteEncoding[0]));
Index++) {
if ((mAmlByteEncoding[Index].OpCode == OpCode) &&
(mAmlByteEncoding[Index].SubOpCode == SubOpCode)) {
return mAmlByteEncoding[Index].Str;
}
}
ASSERT (0);
return NULL;
}
/** Look for an OpCode/SubOpCode couple in the AML field element grammar,
and return a corresponding string.
@param [in] OpCode The OpCode.
@param [in] SubOpCode The SubOpCode. Must be zero.
@return A string describing the OpCode/SubOpCode couple.
NULL if not found.
**/
CONST
CHAR8 *
AmlGetFieldOpCodeStr (
IN UINT8 OpCode,
IN UINT8 SubOpCode
)
{
EAML_PARSE_INDEX Index;
if (SubOpCode != 0) {
ASSERT (0);
return NULL;
}
// Search the table.
for (Index = 0;
Index < (sizeof (mAmlFieldEncoding) / sizeof (mAmlFieldEncoding[0]));
Index++) {
if ((mAmlFieldEncoding[Index].OpCode == OpCode)) {
return mAmlFieldEncoding[Index].Str;
}
}
ASSERT (0);
return NULL;
}
#endif // MDEPKG_NDEBUG
/** Check whether the OpCode/SubOpcode couple is a valid entry
in the AML grammar encoding table.
@param [in] OpCode OpCode to check.
@param [in] SubOpCode SubOpCode to check.
@retval TRUE The OpCode/SubOpCode couple is valid.
@retval FALSE Otherwise.
**/
BOOLEAN
EFIAPI
AmlIsOpCodeValid (
IN UINT8 OpCode,
IN UINT8 SubOpCode
)
{
EAML_PARSE_INDEX Index;
// Search the table.
for (Index = 0;
Index < (sizeof (mAmlByteEncoding) / sizeof (mAmlByteEncoding[0]));
Index++) {
if ((mAmlByteEncoding[Index].OpCode == OpCode) &&
(mAmlByteEncoding[Index].SubOpCode == SubOpCode)) {
return TRUE;
}
}
return FALSE;
}
/** AML_PARSE_FORMAT to EAML_NODE_DATA_TYPE translation table.
AML_PARSE_FORMAT describes an internal set of values identifying the types
that can be found while parsing an AML bytestream.
EAML_NODE_DATA_TYPE describes an external set of values allowing to identify
what type of data can be found in data nodes.
*/
GLOBAL_REMOVE_IF_UNREFERENCED
STATIC
CONST
EAML_NODE_DATA_TYPE mAmlTypeToNodeDataType[] = {
EAmlNodeDataTypeNone, // EAmlNone
EAmlNodeDataTypeUInt, // EAmlUInt8
EAmlNodeDataTypeUInt, // EAmlUInt16
EAmlNodeDataTypeUInt, // EAmlUInt32
EAmlNodeDataTypeUInt, // EAmlUInt64
EAmlNodeDataTypeReserved5, // EAmlObject
EAmlNodeDataTypeNameString, // EAmlName
EAmlNodeDataTypeString, // EAmlString
EAmlNodeDataTypeFieldPkgLen // EAmlFieldPkgLen
};
/** Convert an AML_PARSE_FORMAT to its corresponding EAML_NODE_DATA_TYPE.
@param [in] AmlType Input AML Type.
@return The corresponding EAML_NODE_DATA_TYPE.
EAmlNodeDataTypeNone if not found.
**/
EAML_NODE_DATA_TYPE
EFIAPI
AmlTypeToNodeDataType (
IN AML_PARSE_FORMAT AmlType
)
{
if (AmlType >=
(sizeof (mAmlTypeToNodeDataType) / sizeof (mAmlTypeToNodeDataType[0]))) {
ASSERT (0);
return EAmlNodeDataTypeNone;
}
return mAmlTypeToNodeDataType[AmlType];
}
/** Get the package length from the buffer.
@param [in] Buffer AML buffer.
@param [out] PkgLength The interpreted PkgLen value.
Length cannot exceed 2^28.
@return The number of bytes to represent the package length.
0 if an issue occurred.
**/
UINT32
EFIAPI
AmlGetPkgLength (
IN CONST UINT8 * Buffer,
OUT UINT32 * PkgLength
)
{
UINT8 LeadByte;
UINT8 ByteCount;
UINT32 RealLength;
UINT32 Offset;
if ((Buffer == NULL) ||
(PkgLength == NULL)) {
ASSERT (0);
return 0;
}
/* From ACPI 6.3 specification, s20.2.4 "Package Length Encoding":
PkgLength := PkgLeadByte |
<PkgLeadByte ByteData> |
<PkgLeadByte ByteData ByteData> |
<PkgLeadByte ByteData ByteData ByteData>
PkgLeadByte := <bit 7-6: ByteData count that follows (0-3)>
<bit 5-4: Only used if PkgLength < 63>
<bit 3-0: Least significant package length nibble>
Note:
The high 2 bits of the first byte reveal how many
follow bytes are in the PkgLength. If the
PkgLength has only one byte, bit 0 through 5 are
used to encode the package length (in other
words, values 0-63). If the package length value
is more than 63, more than one byte must be
used for the encoding in which case bit 4 and 5 of
the PkgLeadByte are reserved and must be zero.
If the multiple bytes encoding is used, bits 0-3 of
the PkgLeadByte become the least significant 4
bits of the resulting package length value. The next
ByteData will become the next least
significant 8 bits of the resulting value and so on,
up to 3 ByteData bytes. Thus, the maximum
package length is 2**28.
*/
LeadByte = *Buffer;
ByteCount = (LeadByte >> 6) & 0x03U;
Offset = ByteCount + 1U;
RealLength = 0;
// Switch on the number of bytes used to store the PkgLen.
switch (ByteCount) {
case 0:
{
RealLength = LeadByte;
break;
}
case 1:
{
RealLength = *(Buffer + 1);
RealLength = (RealLength << 4) | (LeadByte & 0xF);
break;
}
case 2:
{
RealLength = *(Buffer + 1);
RealLength |= ((UINT32)(*(Buffer + 2))) << 8;
RealLength = (RealLength << 4) | (LeadByte & 0xF);
break;
}
case 3:
{
RealLength = *(Buffer + 1);
RealLength |= ((UINT32)(*(Buffer + 2))) << 8;
RealLength |= ((UINT32)(*(Buffer + 3))) << 16;
RealLength = (RealLength << 4) | (LeadByte & 0xF);
break;
}
default:
{
ASSERT (0);
Offset = 0;
break;
}
} // switch
*PkgLength = RealLength;
return Offset;
}
/** Convert the Length to the AML PkgLen encoding,
then and write it in the Buffer.
@param [in] Length Length to convert.
Length cannot exceed 2^28.
@param [out] Buffer Write the result in this Buffer.
@return The number of bytes used to write the Length.
**/
UINT8
EFIAPI
AmlSetPkgLength (
IN UINT32 Length,
OUT UINT8 * Buffer
)
{
UINT8 LeadByte;
UINT8 Offset;
UINT8 CurrentOffset;
UINT8 CurrentShift;
UINT32 ComputedLength;
if (Buffer == NULL) {
ASSERT (0);
return 0;
}
LeadByte = 0;
Offset = 0;
if ((Length < (1 << 6))) {
// Length < 2^6, only need one byte to encode it.
LeadByte = (UINT8)Length;
} else {
// Need more than one byte to encode it.
// Test Length to find how many bytes are needed.
if (Length >= (1 << 28)) {
// Length >= 2^28, should not be possible.
ASSERT (0);
return 0;
} else if (Length >= (1 << 20)) {
// Length >= 2^20
Offset = 3;
} else if (Length >= (1 << 12)) {
// Length >= 2^12
Offset = 2;
} else if (Length >= (1 << 6)) {
// Length >= 2^6
Offset = 1;
} else {
// Should not be possible.
ASSERT (0);
return 0;
}
// Set the LeadByte.
LeadByte = (UINT8)(Offset << 6);
LeadByte = (UINT8)(LeadByte | (Length & 0xF));
}
// Write to the Buffer.
*Buffer = LeadByte;
CurrentOffset = 1;
while (CurrentOffset < (Offset + 1)) {
CurrentShift = (UINT8)((CurrentOffset - 1) * 8);
ComputedLength = Length & (UINT32)(0x00000FF0 << CurrentShift);
ComputedLength = (ComputedLength) >> (4 + CurrentShift);
LeadByte = (UINT8)(ComputedLength & 0xFF);
*(Buffer + CurrentOffset) = LeadByte;
CurrentOffset++;
}
return ++Offset;
}
/** Compute the number of bytes required to write a package length.
@param [in] Length The length to convert in the AML package length
encoding style.
Length cannot exceed 2^28.
@return The number of bytes required to write the Length.
**/
UINT8
EFIAPI
AmlComputePkgLengthWidth (
IN UINT32 Length
)
{
// Length >= 2^28, should not be possible.
if (Length >= (1 << 28)) {
ASSERT (0);
return 0;
} else if (Length >= (1 << 20)) {
// Length >= 2^20
return 4;
} else if (Length >= (1 << 12)) {
// Length >= 2^12
return 3;
} else if (Length >= (1 << 6)) {
// Length >= 2^6
return 2;
}
// Length < 2^6
return 1;
}
|
