summaryrefslogtreecommitdiff
path: root/MdePkg/Include/Uefi/UefiSpec.h
blob: e8feed120ded92565c511feeb7b8b3b03468c610 (plain)
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
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
/** @file
  Include file that supports UEFI.

  This include file must contain things defined in the UEFI 2.6 specification.
  If a code construct is defined in the UEFI 2.6 specification it must be included
  by this include file.

Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials are licensed and made available under 
the terms and conditions of the BSD License that accompanies this distribution.  
The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php.                                          
    
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,                     
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.

**/

#ifndef __UEFI_SPEC_H__
#define __UEFI_SPEC_H__

#include <Uefi/UefiMultiPhase.h>

#include <Protocol/DevicePath.h>
#include <Protocol/SimpleTextIn.h>
#include <Protocol/SimpleTextInEx.h>
#include <Protocol/SimpleTextOut.h>

///
/// Enumeration of EFI memory allocation types.
///
typedef enum {
  ///
  /// Allocate any available range of pages that satisfies the request.
  ///
  AllocateAnyPages,
  ///
  /// Allocate any available range of pages whose uppermost address is less than 
  /// or equal to a specified maximum address.
  ///
  AllocateMaxAddress,
  ///
  /// Allocate pages at a specified address.
  ///
  AllocateAddress,
  ///
  /// Maximum enumeration value that may be used for bounds checking.
  ///
  MaxAllocateType
} EFI_ALLOCATE_TYPE;

//
// Bit definitions for EFI_TIME.Daylight
//
#define EFI_TIME_ADJUST_DAYLIGHT  0x01
#define EFI_TIME_IN_DAYLIGHT      0x02

///
/// Value definition for EFI_TIME.TimeZone.
///
#define EFI_UNSPECIFIED_TIMEZONE  0x07FF

//
// Memory cacheability attributes
//
#define EFI_MEMORY_UC               0x0000000000000001ULL
#define EFI_MEMORY_WC               0x0000000000000002ULL
#define EFI_MEMORY_WT               0x0000000000000004ULL
#define EFI_MEMORY_WB               0x0000000000000008ULL
#define EFI_MEMORY_UCE              0x0000000000000010ULL
//
// Physical memory protection attributes
//
// Note: UEFI spec 2.5 and following: use EFI_MEMORY_RO as write-protected physical memory
// protection attribute. Also, EFI_MEMORY_WP means cacheability attribute.
//
#define EFI_MEMORY_WP               0x0000000000001000ULL
#define EFI_MEMORY_RP               0x0000000000002000ULL
#define EFI_MEMORY_XP               0x0000000000004000ULL
#define EFI_MEMORY_RO               0x0000000000020000ULL
//
// Physical memory persistence attribute. 
// The memory region supports byte-addressable non-volatility.
//
#define EFI_MEMORY_NV               0x0000000000008000ULL
//
// The memory region provides higher reliability relative to other memory in the system.
// If all memory has the same reliability, then this bit is not used.
//
#define EFI_MEMORY_MORE_RELIABLE    0x0000000000010000ULL
//
// Runtime memory attribute
//
#define EFI_MEMORY_RUNTIME          0x8000000000000000ULL

///
/// Memory descriptor version number.
///
#define EFI_MEMORY_DESCRIPTOR_VERSION 1

///
/// Definition of an EFI memory descriptor.
///
typedef struct {
  ///
  /// Type of the memory region.  See EFI_MEMORY_TYPE.
  ///
  UINT32                Type;
  ///
  /// Physical address of the first byte of the memory region.  Must aligned 
  /// on a 4 KB boundary.
  ///
  EFI_PHYSICAL_ADDRESS  PhysicalStart;
  ///
  /// Virtual address of the first byte of the memory region.  Must aligned 
  /// on a 4 KB boundary.
  ///
  EFI_VIRTUAL_ADDRESS   VirtualStart;
  ///
  /// Number of 4KB pages in the memory region.
  ///
  UINT64                NumberOfPages;
  ///
  /// Attributes of the memory region that describe the bit mask of capabilities
  /// for that memory region, and not necessarily the current settings for that 
  /// memory region.
  ///
  UINT64                Attribute;
} EFI_MEMORY_DESCRIPTOR;

/**
  Allocates memory pages from the system.

  @param[in]       Type         The type of allocation to perform.
  @param[in]       MemoryType   The type of memory to allocate.
                                MemoryType values in the range 0x70000000..0x7FFFFFFF
                                are reserved for OEM use. MemoryType values in the range
                                0x80000000..0xFFFFFFFF are reserved for use by UEFI OS loaders
                                that are provided by operating system vendors.
  @param[in]       Pages        The number of contiguous 4 KB pages to allocate.
  @param[in, out]  Memory       The pointer to a physical address. On input, the way in which the address is
                                used depends on the value of Type.

  @retval EFI_SUCCESS           The requested pages were allocated.
  @retval EFI_INVALID_PARAMETER 1) Type is not AllocateAnyPages or
                                AllocateMaxAddress or AllocateAddress.
                                2) MemoryType is in the range
                                EfiMaxMemoryType..0x6FFFFFFF.
                                3) Memory is NULL.
                                4) MemoryType is EfiPersistentMemory.
  @retval EFI_OUT_OF_RESOURCES  The pages could not be allocated.
  @retval EFI_NOT_FOUND         The requested pages could not be found.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_ALLOCATE_PAGES)(
  IN     EFI_ALLOCATE_TYPE            Type,
  IN     EFI_MEMORY_TYPE              MemoryType,
  IN     UINTN                        Pages,
  IN OUT EFI_PHYSICAL_ADDRESS         *Memory
  );

/**
  Frees memory pages.

  @param[in]  Memory      The base physical address of the pages to be freed.
  @param[in]  Pages       The number of contiguous 4 KB pages to free.

  @retval EFI_SUCCESS           The requested pages were freed.
  @retval EFI_INVALID_PARAMETER Memory is not a page-aligned address or Pages is invalid.
  @retval EFI_NOT_FOUND         The requested memory pages were not allocated with
                                AllocatePages().

**/
typedef
EFI_STATUS
(EFIAPI *EFI_FREE_PAGES)(
  IN  EFI_PHYSICAL_ADDRESS         Memory,
  IN  UINTN                        Pages
  );

/**
  Returns the current memory map.

  @param[in, out]  MemoryMapSize         A pointer to the size, in bytes, of the MemoryMap buffer.
                                         On input, this is the size of the buffer allocated by the caller.
                                         On output, it is the size of the buffer returned by the firmware if
                                         the buffer was large enough, or the size of the buffer needed to contain
                                         the map if the buffer was too small.
  @param[in, out]  MemoryMap             A pointer to the buffer in which firmware places the current memory
                                         map.
  @param[out]      MapKey                A pointer to the location in which firmware returns the key for the
                                         current memory map.
  @param[out]      DescriptorSize        A pointer to the location in which firmware returns the size, in bytes, of
                                         an individual EFI_MEMORY_DESCRIPTOR.
  @param[out]      DescriptorVersion     A pointer to the location in which firmware returns the version number
                                         associated with the EFI_MEMORY_DESCRIPTOR.

  @retval EFI_SUCCESS           The memory map was returned in the MemoryMap buffer.
  @retval EFI_BUFFER_TOO_SMALL  The MemoryMap buffer was too small. The current buffer size
                                needed to hold the memory map is returned in MemoryMapSize.
  @retval EFI_INVALID_PARAMETER 1) MemoryMapSize is NULL.
                                2) The MemoryMap buffer is not too small and MemoryMap is
                                   NULL.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_GET_MEMORY_MAP)(
  IN OUT UINTN                       *MemoryMapSize,
  IN OUT EFI_MEMORY_DESCRIPTOR       *MemoryMap,
  OUT    UINTN                       *MapKey,
  OUT    UINTN                       *DescriptorSize,
  OUT    UINT32                      *DescriptorVersion
  );

/**
  Allocates pool memory.

  @param[in]   PoolType         The type of pool to allocate.
                                MemoryType values in the range 0x70000000..0x7FFFFFFF
                                are reserved for OEM use. MemoryType values in the range
                                0x80000000..0xFFFFFFFF are reserved for use by UEFI OS loaders
                                that are provided by operating system vendors.
  @param[in]   Size             The number of bytes to allocate from the pool.
  @param[out]  Buffer           A pointer to a pointer to the allocated buffer if the call succeeds;
                                undefined otherwise.

  @retval EFI_SUCCESS           The requested number of bytes was allocated.
  @retval EFI_OUT_OF_RESOURCES  The pool requested could not be allocated.
  @retval EFI_INVALID_PARAMETER Buffer is NULL.
                                PoolType is in the range EfiMaxMemoryType..0x6FFFFFFF.
                                PoolType is EfiPersistentMemory.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_ALLOCATE_POOL)(
  IN  EFI_MEMORY_TYPE              PoolType,
  IN  UINTN                        Size,
  OUT VOID                         **Buffer
  );

/**
  Returns pool memory to the system.

  @param[in]  Buffer            The pointer to the buffer to free.

  @retval EFI_SUCCESS           The memory was returned to the system.
  @retval EFI_INVALID_PARAMETER Buffer was invalid.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_FREE_POOL)(
  IN  VOID                         *Buffer
  );

/**
  Changes the runtime addressing mode of EFI firmware from physical to virtual.

  @param[in]  MemoryMapSize     The size in bytes of VirtualMap.
  @param[in]  DescriptorSize    The size in bytes of an entry in the VirtualMap.
  @param[in]  DescriptorVersion The version of the structure entries in VirtualMap.
  @param[in]  VirtualMap        An array of memory descriptors which contain new virtual
                                address mapping information for all runtime ranges.

  @retval EFI_SUCCESS           The virtual address map has been applied.
  @retval EFI_UNSUPPORTED       EFI firmware is not at runtime, or the EFI firmware is already in
                                virtual address mapped mode.
  @retval EFI_INVALID_PARAMETER DescriptorSize or DescriptorVersion is invalid.
  @retval EFI_NO_MAPPING        A virtual address was not supplied for a range in the memory
                                map that requires a mapping.
  @retval EFI_NOT_FOUND         A virtual address was supplied for an address that is not found
                                in the memory map.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_SET_VIRTUAL_ADDRESS_MAP)(
  IN  UINTN                        MemoryMapSize,
  IN  UINTN                        DescriptorSize,
  IN  UINT32                       DescriptorVersion,
  IN  EFI_MEMORY_DESCRIPTOR        *VirtualMap
  );

/**
  Connects one or more drivers to a controller.

  @param[in]  ControllerHandle      The handle of the controller to which driver(s) are to be connected.
  @param[in]  DriverImageHandle     A pointer to an ordered list handles that support the
                                    EFI_DRIVER_BINDING_PROTOCOL.
  @param[in]  RemainingDevicePath   A pointer to the device path that specifies a child of the
                                    controller specified by ControllerHandle.
  @param[in]  Recursive             If TRUE, then ConnectController() is called recursively
                                    until the entire tree of controllers below the controller specified
                                    by ControllerHandle have been created. If FALSE, then
                                    the tree of controllers is only expanded one level.

  @retval EFI_SUCCESS           1) One or more drivers were connected to ControllerHandle.
                                2) No drivers were connected to ControllerHandle, but
                                RemainingDevicePath is not NULL, and it is an End Device
                                Path Node.
  @retval EFI_INVALID_PARAMETER ControllerHandle is NULL.
  @retval EFI_NOT_FOUND         1) There are no EFI_DRIVER_BINDING_PROTOCOL instances
                                present in the system.
                                2) No drivers were connected to ControllerHandle.
  @retval EFI_SECURITY_VIOLATION 
                                The user has no permission to start UEFI device drivers on the device path 
                                associated with the ControllerHandle or specified by the RemainingDevicePath.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_CONNECT_CONTROLLER)(
  IN  EFI_HANDLE                    ControllerHandle,
  IN  EFI_HANDLE                    *DriverImageHandle,   OPTIONAL
  IN  EFI_DEVICE_PATH_PROTOCOL      *RemainingDevicePath, OPTIONAL
  IN  BOOLEAN                       Recursive
  );

/**
  Disconnects one or more drivers from a controller.

  @param[in]  ControllerHandle      The handle of the controller from which driver(s) are to be disconnected.
  @param[in]  DriverImageHandle     The driver to disconnect from ControllerHandle.
                                    If DriverImageHandle is NULL, then all the drivers currently managing
                                    ControllerHandle are disconnected from ControllerHandle.
  @param[in]  ChildHandle           The handle of the child to destroy.
                                    If ChildHandle is NULL, then all the children of ControllerHandle are
                                    destroyed before the drivers are disconnected from ControllerHandle.

  @retval EFI_SUCCESS           1) One or more drivers were disconnected from the controller.
                                2) On entry, no drivers are managing ControllerHandle.
                                3) DriverImageHandle is not NULL, and on entry
                                   DriverImageHandle is not managing ControllerHandle.
  @retval EFI_INVALID_PARAMETER 1) ControllerHandle is NULL.
                                2) DriverImageHandle is not NULL, and it is not a valid EFI_HANDLE.
                                3) ChildHandle is not NULL, and it is not a valid EFI_HANDLE.
                                4) DriverImageHandle does not support the EFI_DRIVER_BINDING_PROTOCOL.
  @retval EFI_OUT_OF_RESOURCES  There are not enough resources available to disconnect any drivers from
                                ControllerHandle.
  @retval EFI_DEVICE_ERROR      The controller could not be disconnected because of a device error.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_DISCONNECT_CONTROLLER)(
  IN  EFI_HANDLE                     ControllerHandle,
  IN  EFI_HANDLE                     DriverImageHandle, OPTIONAL
  IN  EFI_HANDLE                     ChildHandle        OPTIONAL
  );



//
// ConvertPointer DebugDisposition type.
//
#define EFI_OPTIONAL_PTR     0x00000001

/**
  Determines the new virtual address that is to be used on subsequent memory accesses.

  @param[in]       DebugDisposition  Supplies type information for the pointer being converted.
  @param[in, out]  Address           A pointer to a pointer that is to be fixed to be the value needed
                                     for the new virtual address mappings being applied.

  @retval EFI_SUCCESS           The pointer pointed to by Address was modified.
  @retval EFI_INVALID_PARAMETER 1) Address is NULL.
                                2) *Address is NULL and DebugDisposition does
                                not have the EFI_OPTIONAL_PTR bit set.
  @retval EFI_NOT_FOUND         The pointer pointed to by Address was not found to be part
                                of the current memory map. This is normally fatal.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_CONVERT_POINTER)(
  IN     UINTN                      DebugDisposition,
  IN OUT VOID                       **Address
  );


//
// These types can be ORed together as needed - for example,
// EVT_TIMER might be Ored with EVT_NOTIFY_WAIT or
// EVT_NOTIFY_SIGNAL.
//
#define EVT_TIMER                         0x80000000
#define EVT_RUNTIME                       0x40000000
#define EVT_NOTIFY_WAIT                   0x00000100
#define EVT_NOTIFY_SIGNAL                 0x00000200

#define EVT_SIGNAL_EXIT_BOOT_SERVICES     0x00000201
#define EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE 0x60000202

//
// The event's NotifyContext pointer points to a runtime memory
// address.
// The event is deprecated in UEFI2.0 and later specifications.
//
#define EVT_RUNTIME_CONTEXT               0x20000000


/**
  Invoke a notification event

  @param[in]  Event                 Event whose notification function is being invoked.
  @param[in]  Context               The pointer to the notification function's context,
                                    which is implementation-dependent.

**/
typedef
VOID
(EFIAPI *EFI_EVENT_NOTIFY)(
  IN  EFI_EVENT                Event,
  IN  VOID                     *Context
  );

/**
  Creates an event.

  @param[in]   Type             The type of event to create and its mode and attributes.
  @param[in]   NotifyTpl        The task priority level of event notifications, if needed.
  @param[in]   NotifyFunction   The pointer to the event's notification function, if any.
  @param[in]   NotifyContext    The pointer to the notification function's context; corresponds to parameter
                                Context in the notification function.
  @param[out]  Event            The pointer to the newly created event if the call succeeds; undefined
                                otherwise.

  @retval EFI_SUCCESS           The event structure was created.
  @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
  @retval EFI_OUT_OF_RESOURCES  The event could not be allocated.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_CREATE_EVENT)(
  IN  UINT32                       Type,
  IN  EFI_TPL                      NotifyTpl,
  IN  EFI_EVENT_NOTIFY             NotifyFunction,
  IN  VOID                         *NotifyContext,
  OUT EFI_EVENT                    *Event
  );

/**
  Creates an event in a group.

  @param[in]   Type             The type of event to create and its mode and attributes.
  @param[in]   NotifyTpl        The task priority level of event notifications,if needed.
  @param[in]   NotifyFunction   The pointer to the event's notification function, if any.
  @param[in]   NotifyContext    The pointer to the notification function's context; corresponds to parameter
                                Context in the notification function.
  @param[in]   EventGroup       The pointer to the unique identifier of the group to which this event belongs.
                                If this is NULL, then the function behaves as if the parameters were passed
                                to CreateEvent.
  @param[out]  Event            The pointer to the newly created event if the call succeeds; undefined
                                otherwise.

  @retval EFI_SUCCESS           The event structure was created.
  @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
  @retval EFI_OUT_OF_RESOURCES  The event could not be allocated.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_CREATE_EVENT_EX)(
  IN       UINT32                 Type,
  IN       EFI_TPL                NotifyTpl,
  IN       EFI_EVENT_NOTIFY       NotifyFunction OPTIONAL,
  IN CONST VOID                   *NotifyContext OPTIONAL,
  IN CONST EFI_GUID               *EventGroup    OPTIONAL,
  OUT      EFI_EVENT              *Event
  );

///
/// Timer delay types
///
typedef enum {
  ///
  /// An event's timer settings is to be cancelled and not trigger time is to be set/
  ///
  TimerCancel,
  ///
  /// An event is to be signaled periodically at a specified interval from the current time.
  ///
  TimerPeriodic,
  ///
  /// An event is to be signaled once at a specified interval from the current time.
  ///
  TimerRelative
} EFI_TIMER_DELAY;

/**
  Sets the type of timer and the trigger time for a timer event.

  @param[in]  Event             The timer event that is to be signaled at the specified time.
  @param[in]  Type              The type of time that is specified in TriggerTime.
  @param[in]  TriggerTime       The number of 100ns units until the timer expires.
                                A TriggerTime of 0 is legal.
                                If Type is TimerRelative and TriggerTime is 0, then the timer
                                event will be signaled on the next timer tick.
                                If Type is TimerPeriodic and TriggerTime is 0, then the timer
                                event will be signaled on every timer tick.

  @retval EFI_SUCCESS           The event has been set to be signaled at the requested time.
  @retval EFI_INVALID_PARAMETER Event or Type is not valid.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_SET_TIMER)(
  IN  EFI_EVENT                Event,
  IN  EFI_TIMER_DELAY          Type,
  IN  UINT64                   TriggerTime
  );

/**
  Signals an event.

  @param[in]  Event             The event to signal.

  @retval EFI_SUCCESS           The event has been signaled.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_SIGNAL_EVENT)(
  IN  EFI_EVENT                Event
  );

/**
  Stops execution until an event is signaled.

  @param[in]   NumberOfEvents   The number of events in the Event array.
  @param[in]   Event            An array of EFI_EVENT.
  @param[out]  Index            The pointer to the index of the event which satisfied the wait condition.

  @retval EFI_SUCCESS           The event indicated by Index was signaled.
  @retval EFI_INVALID_PARAMETER 1) NumberOfEvents is 0.
                                2) The event indicated by Index is of type
                                   EVT_NOTIFY_SIGNAL.
  @retval EFI_UNSUPPORTED       The current TPL is not TPL_APPLICATION.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_WAIT_FOR_EVENT)(
  IN  UINTN                    NumberOfEvents,
  IN  EFI_EVENT                *Event,
  OUT UINTN                    *Index
  );

/**
  Closes an event.

  @param[in]  Event             The event to close.

  @retval EFI_SUCCESS           The event has been closed.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_CLOSE_EVENT)(
  IN EFI_EVENT                Event
  );

/**
  Checks whether an event is in the signaled state.

  @param[in]  Event             The event to check.

  @retval EFI_SUCCESS           The event is in the signaled state.
  @retval EFI_NOT_READY         The event is not in the signaled state.
  @retval EFI_INVALID_PARAMETER Event is of type EVT_NOTIFY_SIGNAL.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_CHECK_EVENT)(
  IN EFI_EVENT                Event
  );


//
// Task priority level
//
#define TPL_APPLICATION       4
#define TPL_CALLBACK          8
#define TPL_NOTIFY            16
#define TPL_HIGH_LEVEL        31


/**
  Raises a task's priority level and returns its previous level.

  @param[in]  NewTpl          The new task priority level.

  @return Previous task priority level

**/
typedef
EFI_TPL
(EFIAPI *EFI_RAISE_TPL)(
  IN EFI_TPL      NewTpl
  );

/**
  Restores a task's priority level to its previous value.

  @param[in]  OldTpl          The previous task priority level to restore.

**/
typedef
VOID
(EFIAPI *EFI_RESTORE_TPL)(
  IN EFI_TPL      OldTpl
  );

/**
  Returns the value of a variable.

  @param[in]       VariableName  A Null-terminated string that is the name of the vendor's
                                 variable.
  @param[in]       VendorGuid    A unique identifier for the vendor.
  @param[out]      Attributes    If not NULL, a pointer to the memory location to return the
                                 attributes bitmask for the variable.
  @param[in, out]  DataSize      On input, the size in bytes of the return Data buffer.
                                 On output the size of data returned in Data.
  @param[out]      Data          The buffer to return the contents of the variable. May be NULL
                                 with a zero DataSize in order to determine the size buffer needed.

  @retval EFI_SUCCESS            The function completed successfully.
  @retval EFI_NOT_FOUND          The variable was not found.
  @retval EFI_BUFFER_TOO_SMALL   The DataSize is too small for the result.
  @retval EFI_INVALID_PARAMETER  VariableName is NULL.
  @retval EFI_INVALID_PARAMETER  VendorGuid is NULL.
  @retval EFI_INVALID_PARAMETER  DataSize is NULL.
  @retval EFI_INVALID_PARAMETER  The DataSize is not too small and Data is NULL.
  @retval EFI_DEVICE_ERROR       The variable could not be retrieved due to a hardware error.
  @retval EFI_SECURITY_VIOLATION The variable could not be retrieved due to an authentication failure.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_GET_VARIABLE)(
  IN     CHAR16                      *VariableName,
  IN     EFI_GUID                    *VendorGuid,
  OUT    UINT32                      *Attributes,    OPTIONAL
  IN OUT UINTN                       *DataSize,
  OUT    VOID                        *Data           OPTIONAL
  );

/**
  Enumerates the current variable names.

  @param[in, out]  VariableNameSize The size of the VariableName buffer.
  @param[in, out]  VariableName     On input, supplies the last VariableName that was returned
                                    by GetNextVariableName(). On output, returns the Nullterminated
                                    string of the current variable.
  @param[in, out]  VendorGuid       On input, supplies the last VendorGuid that was returned by
                                    GetNextVariableName(). On output, returns the
                                    VendorGuid of the current variable.

  @retval EFI_SUCCESS           The function completed successfully.
  @retval EFI_NOT_FOUND         The next variable was not found.
  @retval EFI_BUFFER_TOO_SMALL  The VariableNameSize is too small for the result.
  @retval EFI_INVALID_PARAMETER VariableNameSize is NULL.
  @retval EFI_INVALID_PARAMETER VariableName is NULL.
  @retval EFI_INVALID_PARAMETER VendorGuid is NULL.
  @retval EFI_DEVICE_ERROR      The variable could not be retrieved due to a hardware error.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_GET_NEXT_VARIABLE_NAME)(
  IN OUT UINTN                    *VariableNameSize,
  IN OUT CHAR16                   *VariableName,
  IN OUT EFI_GUID                 *VendorGuid
  );

/**
  Sets the value of a variable.

  @param[in]  VariableName       A Null-terminated string that is the name of the vendor's variable.
                                 Each VariableName is unique for each VendorGuid. VariableName must
                                 contain 1 or more characters. If VariableName is an empty string,
                                 then EFI_INVALID_PARAMETER is returned.
  @param[in]  VendorGuid         A unique identifier for the vendor.
  @param[in]  Attributes         Attributes bitmask to set for the variable.
  @param[in]  DataSize           The size in bytes of the Data buffer. Unless the EFI_VARIABLE_APPEND_WRITE, 
                                 EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS, or 
                                 EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS attribute is set, a size of zero 
                                 causes the variable to be deleted. When the EFI_VARIABLE_APPEND_WRITE attribute is 
                                 set, then a SetVariable() call with a DataSize of zero will not cause any change to 
                                 the variable value (the timestamp associated with the variable may be updated however 
                                 even if no new data value is provided,see the description of the 
                                 EFI_VARIABLE_AUTHENTICATION_2 descriptor below. In this case the DataSize will not 
                                 be zero since the EFI_VARIABLE_AUTHENTICATION_2 descriptor will be populated). 
  @param[in]  Data               The contents for the variable.

  @retval EFI_SUCCESS            The firmware has successfully stored the variable and its data as
                                 defined by the Attributes.
  @retval EFI_INVALID_PARAMETER  An invalid combination of attribute bits, name, and GUID was supplied, or the
                                 DataSize exceeds the maximum allowed.
  @retval EFI_INVALID_PARAMETER  VariableName is an empty string.
  @retval EFI_OUT_OF_RESOURCES   Not enough storage is available to hold the variable and its data.
  @retval EFI_DEVICE_ERROR       The variable could not be retrieved due to a hardware error.
  @retval EFI_WRITE_PROTECTED    The variable in question is read-only.
  @retval EFI_WRITE_PROTECTED    The variable in question cannot be deleted.
  @retval EFI_SECURITY_VIOLATION The variable could not be written due to EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS 
                                 or EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACESS being set, but the AuthInfo 
                                 does NOT pass the validation check carried out by the firmware.
  
  @retval EFI_NOT_FOUND          The variable trying to be updated or deleted was not found.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_SET_VARIABLE)(
  IN  CHAR16                       *VariableName,
  IN  EFI_GUID                     *VendorGuid,
  IN  UINT32                       Attributes,
  IN  UINTN                        DataSize,
  IN  VOID                         *Data
  );


///
/// This provides the capabilities of the
/// real time clock device as exposed through the EFI interfaces.
///
typedef struct {
  ///
  /// Provides the reporting resolution of the real-time clock device in
  /// counts per second. For a normal PC-AT CMOS RTC device, this
  /// value would be 1 Hz, or 1, to indicate that the device only reports
  /// the time to the resolution of 1 second.
  ///
  UINT32    Resolution;
  ///
  /// Provides the timekeeping accuracy of the real-time clock in an
  /// error rate of 1E-6 parts per million. For a clock with an accuracy
  /// of 50 parts per million, the value in this field would be
  /// 50,000,000.
  ///
  UINT32    Accuracy;
  ///
  /// A TRUE indicates that a time set operation clears the device's
  /// time below the Resolution reporting level. A FALSE
  /// indicates that the state below the Resolution level of the
  /// device is not cleared when the time is set. Normal PC-AT CMOS
  /// RTC devices set this value to FALSE.
  ///
  BOOLEAN   SetsToZero;
} EFI_TIME_CAPABILITIES;

/**
  Returns the current time and date information, and the time-keeping capabilities
  of the hardware platform.

  @param[out]  Time             A pointer to storage to receive a snapshot of the current time.
  @param[out]  Capabilities     An optional pointer to a buffer to receive the real time clock
                                device's capabilities.

  @retval EFI_SUCCESS           The operation completed successfully.
  @retval EFI_INVALID_PARAMETER Time is NULL.
  @retval EFI_DEVICE_ERROR      The time could not be retrieved due to hardware error.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_GET_TIME)(
  OUT  EFI_TIME                    *Time,
  OUT  EFI_TIME_CAPABILITIES       *Capabilities OPTIONAL
  );

/**
  Sets the current local time and date information.

  @param[in]  Time              A pointer to the current time.

  @retval EFI_SUCCESS           The operation completed successfully.
  @retval EFI_INVALID_PARAMETER A time field is out of range.
  @retval EFI_DEVICE_ERROR      The time could not be set due due to hardware error.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_SET_TIME)(
  IN  EFI_TIME                     *Time
  );

/**
  Returns the current wakeup alarm clock setting.

  @param[out]  Enabled          Indicates if the alarm is currently enabled or disabled.
  @param[out]  Pending          Indicates if the alarm signal is pending and requires acknowledgement.
  @param[out]  Time             The current alarm setting.

  @retval EFI_SUCCESS           The alarm settings were returned.
  @retval EFI_INVALID_PARAMETER Enabled is NULL.
  @retval EFI_INVALID_PARAMETER Pending is NULL.
  @retval EFI_INVALID_PARAMETER Time is NULL.
  @retval EFI_DEVICE_ERROR      The wakeup time could not be retrieved due to a hardware error.
  @retval EFI_UNSUPPORTED       A wakeup timer is not supported on this platform.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_GET_WAKEUP_TIME)(
  OUT BOOLEAN                     *Enabled,
  OUT BOOLEAN                     *Pending,
  OUT EFI_TIME                    *Time
  );

/**
  Sets the system wakeup alarm clock time.

  @param[in]  Enable            Enable or disable the wakeup alarm.
  @param[in]  Time              If Enable is TRUE, the time to set the wakeup alarm for.
                                If Enable is FALSE, then this parameter is optional, and may be NULL.

  @retval EFI_SUCCESS           If Enable is TRUE, then the wakeup alarm was enabled. If
                                Enable is FALSE, then the wakeup alarm was disabled.
  @retval EFI_INVALID_PARAMETER A time field is out of range.
  @retval EFI_DEVICE_ERROR      The wakeup time could not be set due to a hardware error.
  @retval EFI_UNSUPPORTED       A wakeup timer is not supported on this platform.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_SET_WAKEUP_TIME)(
  IN  BOOLEAN                      Enable,
  IN  EFI_TIME                     *Time   OPTIONAL
  );

/**
  Loads an EFI image into memory.

  @param[in]   BootPolicy        If TRUE, indicates that the request originates from the boot
                                 manager, and that the boot manager is attempting to load
                                 FilePath as a boot selection. Ignored if SourceBuffer is
                                 not NULL.
  @param[in]   ParentImageHandle The caller's image handle.
  @param[in]   DevicePath        The DeviceHandle specific file path from which the image is
                                 loaded.
  @param[in]   SourceBuffer      If not NULL, a pointer to the memory location containing a copy
                                 of the image to be loaded.
  @param[in]   SourceSize        The size in bytes of SourceBuffer. Ignored if SourceBuffer is NULL.
  @param[out]  ImageHandle       The pointer to the returned image handle that is created when the
                                 image is successfully loaded.

  @retval EFI_SUCCESS            Image was loaded into memory correctly.
  @retval EFI_NOT_FOUND          Both SourceBuffer and DevicePath are NULL.
  @retval EFI_INVALID_PARAMETER  One or more parametes are invalid.
  @retval EFI_UNSUPPORTED        The image type is not supported.
  @retval EFI_OUT_OF_RESOURCES   Image was not loaded due to insufficient resources.
  @retval EFI_LOAD_ERROR         Image was not loaded because the image format was corrupt or not
                                 understood.
  @retval EFI_DEVICE_ERROR       Image was not loaded because the device returned a read error.
  @retval EFI_ACCESS_DENIED      Image was not loaded because the platform policy prohibits the 
                                 image from being loaded. NULL is returned in *ImageHandle.
  @retval EFI_SECURITY_VIOLATION Image was loaded and an ImageHandle was created with a 
                                 valid EFI_LOADED_IMAGE_PROTOCOL. However, the current 
                                 platform policy specifies that the image should not be started.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_IMAGE_LOAD)(
  IN  BOOLEAN                      BootPolicy,
  IN  EFI_HANDLE                   ParentImageHandle,
  IN  EFI_DEVICE_PATH_PROTOCOL     *DevicePath,
  IN  VOID                         *SourceBuffer OPTIONAL,
  IN  UINTN                        SourceSize,
  OUT EFI_HANDLE                   *ImageHandle
  );

/**
  Transfers control to a loaded image's entry point.

  @param[in]   ImageHandle       Handle of image to be started.
  @param[out]  ExitDataSize      The pointer to the size, in bytes, of ExitData.
  @param[out]  ExitData          The pointer to a pointer to a data buffer that includes a Null-terminated
                                 string, optionally followed by additional binary data.

  @retval EFI_INVALID_PARAMETER  ImageHandle is either an invalid image handle or the image
                                 has already been initialized with StartImage.
  @retval EFI_SECURITY_VIOLATION The current platform policy specifies that the image should not be started.
  @return Exit code from image

**/
typedef
EFI_STATUS
(EFIAPI *EFI_IMAGE_START)(
  IN  EFI_HANDLE                  ImageHandle,
  OUT UINTN                       *ExitDataSize,
  OUT CHAR16                      **ExitData    OPTIONAL
  );

/**
  Terminates a loaded EFI image and returns control to boot services.

  @param[in]  ImageHandle       Handle that identifies the image. This parameter is passed to the 
                                image on entry.
  @param[in]  ExitStatus        The image's exit code.
  @param[in]  ExitDataSize      The size, in bytes, of ExitData. Ignored if ExitStatus is EFI_SUCCESS.
  @param[in]  ExitData          The pointer to a data buffer that includes a Null-terminated string,
                                optionally followed by additional binary data. The string is a 
                                description that the caller may use to further indicate the reason 
                                for the image's exit. ExitData is only valid if ExitStatus 
                                is something other than EFI_SUCCESS. The ExitData buffer 
                                must be allocated by calling AllocatePool().

  @retval EFI_SUCCESS           The image specified by ImageHandle was unloaded.
  @retval EFI_INVALID_PARAMETER The image specified by ImageHandle has been loaded and
                                started with LoadImage() and StartImage(), but the
                                image is not the currently executing image.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_EXIT)(
  IN  EFI_HANDLE                   ImageHandle,
  IN  EFI_STATUS                   ExitStatus,
  IN  UINTN                        ExitDataSize,
  IN  CHAR16                       *ExitData     OPTIONAL
  );

/**
  Unloads an image.

  @param[in]  ImageHandle       Handle that identifies the image to be unloaded.

  @retval EFI_SUCCESS           The image has been unloaded.
  @retval EFI_INVALID_PARAMETER ImageHandle is not a valid image handle.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_IMAGE_UNLOAD)(
  IN  EFI_HANDLE                   ImageHandle
  );

/**
  Terminates all boot services.

  @param[in]  ImageHandle       Handle that identifies the exiting image.
  @param[in]  MapKey            Key to the latest memory map.

  @retval EFI_SUCCESS           Boot services have been terminated.
  @retval EFI_INVALID_PARAMETER MapKey is incorrect.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_EXIT_BOOT_SERVICES)(
  IN  EFI_HANDLE                   ImageHandle,
  IN  UINTN                        MapKey
  );

/**
  Induces a fine-grained stall.

  @param[in]  Microseconds      The number of microseconds to stall execution.

  @retval EFI_SUCCESS           Execution was stalled at least the requested number of
                                Microseconds.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_STALL)(
  IN  UINTN                    Microseconds
  );

/**
  Sets the system's watchdog timer.

  @param[in]  Timeout           The number of seconds to set the watchdog timer to.
  @param[in]  WatchdogCode      The numeric code to log on a watchdog timer timeout event.
  @param[in]  DataSize          The size, in bytes, of WatchdogData.
  @param[in]  WatchdogData      A data buffer that includes a Null-terminated string, optionally
                                followed by additional binary data.

  @retval EFI_SUCCESS           The timeout has been set.
  @retval EFI_INVALID_PARAMETER The supplied WatchdogCode is invalid.
  @retval EFI_UNSUPPORTED       The system does not have a watchdog timer.
  @retval EFI_DEVICE_ERROR      The watchdog timer could not be programmed due to a hardware
                                error.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_SET_WATCHDOG_TIMER)(
  IN UINTN                    Timeout,
  IN UINT64                   WatchdogCode,
  IN UINTN                    DataSize,
  IN CHAR16                   *WatchdogData OPTIONAL
  );

/**
  Resets the entire platform.

  @param[in]  ResetType         The type of reset to perform.
  @param[in]  ResetStatus       The status code for the reset.
  @param[in]  DataSize          The size, in bytes, of WatchdogData.
  @param[in]  ResetData         For a ResetType of EfiResetCold, EfiResetWarm, or
                                EfiResetShutdown the data buffer starts with a Null-terminated
                                string, optionally followed by additional binary data.

**/
typedef
VOID
(EFIAPI *EFI_RESET_SYSTEM)(
  IN EFI_RESET_TYPE           ResetType,
  IN EFI_STATUS               ResetStatus,
  IN UINTN                    DataSize,
  IN VOID                     *ResetData OPTIONAL
  );

/**
  Returns a monotonically increasing count for the platform.

  @param[out]  Count            The pointer to returned value.

  @retval EFI_SUCCESS           The next monotonic count was returned.
  @retval EFI_INVALID_PARAMETER Count is NULL.
  @retval EFI_DEVICE_ERROR      The device is not functioning properly.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_GET_NEXT_MONOTONIC_COUNT)(
  OUT UINT64                  *Count
  );

/**
  Returns the next high 32 bits of the platform's monotonic counter.

  @param[out]  HighCount        The pointer to returned value.

  @retval EFI_SUCCESS           The next high monotonic count was returned.
  @retval EFI_INVALID_PARAMETER HighCount is NULL.
  @retval EFI_DEVICE_ERROR      The device is not functioning properly.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_GET_NEXT_HIGH_MONO_COUNT)(
  OUT UINT32                  *HighCount
  );

/**
  Computes and returns a 32-bit CRC for a data buffer.

  @param[in]   Data             A pointer to the buffer on which the 32-bit CRC is to be computed.
  @param[in]   DataSize         The number of bytes in the buffer Data.
  @param[out]  Crc32            The 32-bit CRC that was computed for the data buffer specified by Data
                                and DataSize.

  @retval EFI_SUCCESS           The 32-bit CRC was computed for the data buffer and returned in
                                Crc32.
  @retval EFI_INVALID_PARAMETER Data is NULL.
  @retval EFI_INVALID_PARAMETER Crc32 is NULL.
  @retval EFI_INVALID_PARAMETER DataSize is 0.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_CALCULATE_CRC32)(
  IN  VOID                              *Data,
  IN  UINTN                             DataSize,
  OUT UINT32                            *Crc32
  );

/**
  Copies the contents of one buffer to another buffer.

  @param[in]  Destination       The pointer to the destination buffer of the memory copy.
  @param[in]  Source            The pointer to the source buffer of the memory copy.
  @param[in]  Length            Number of bytes to copy from Source to Destination.

**/
typedef
VOID
(EFIAPI *EFI_COPY_MEM)(
  IN VOID     *Destination,
  IN VOID     *Source,
  IN UINTN    Length
  );

/**
  The SetMem() function fills a buffer with a specified value.

  @param[in]  Buffer            The pointer to the buffer to fill.
  @param[in]  Size              Number of bytes in Buffer to fill.
  @param[in]  Value             Value to fill Buffer with.

**/
typedef
VOID
(EFIAPI *EFI_SET_MEM)(
  IN VOID     *Buffer,
  IN UINTN    Size,
  IN UINT8    Value
  );

///
/// Enumeration of EFI Interface Types
///
typedef enum {
  ///
  /// Indicates that the supplied protocol interface is supplied in native form.
  ///
  EFI_NATIVE_INTERFACE
} EFI_INTERFACE_TYPE;

/**
  Installs a protocol interface on a device handle. If the handle does not exist, it is created and added
  to the list of handles in the system. InstallMultipleProtocolInterfaces() performs
  more error checking than InstallProtocolInterface(), so it is recommended that
  InstallMultipleProtocolInterfaces() be used in place of
  InstallProtocolInterface()

  @param[in, out]  Handle         A pointer to the EFI_HANDLE on which the interface is to be installed.
  @param[in]       Protocol       The numeric ID of the protocol interface.
  @param[in]       InterfaceType  Indicates whether Interface is supplied in native form.
  @param[in]       Interface      A pointer to the protocol interface.

  @retval EFI_SUCCESS           The protocol interface was installed.
  @retval EFI_OUT_OF_RESOURCES  Space for a new handle could not be allocated.
  @retval EFI_INVALID_PARAMETER Handle is NULL.
  @retval EFI_INVALID_PARAMETER Protocol is NULL.
  @retval EFI_INVALID_PARAMETER InterfaceType is not EFI_NATIVE_INTERFACE.
  @retval EFI_INVALID_PARAMETER Protocol is already installed on the handle specified by Handle.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_INSTALL_PROTOCOL_INTERFACE)(
  IN OUT EFI_HANDLE               *Handle,
  IN     EFI_GUID                 *Protocol,
  IN     EFI_INTERFACE_TYPE       InterfaceType,
  IN     VOID                     *Interface
  );

/**
  Installs one or more protocol interfaces into the boot services environment.

  @param[in, out]  Handle       The pointer to a handle to install the new protocol interfaces on,
                                or a pointer to NULL if a new handle is to be allocated.
  @param  ...                   A variable argument list containing pairs of protocol GUIDs and protocol
                                interfaces.

  @retval EFI_SUCCESS           All the protocol interface was installed.
  @retval EFI_OUT_OF_RESOURCES  There was not enough memory in pool to install all the protocols.
  @retval EFI_ALREADY_STARTED   A Device Path Protocol instance was passed in that is already present in
                                the handle database.
  @retval EFI_INVALID_PARAMETER Handle is NULL.
  @retval EFI_INVALID_PARAMETER Protocol is already installed on the handle specified by Handle.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_INSTALL_MULTIPLE_PROTOCOL_INTERFACES)(
  IN OUT EFI_HANDLE           *Handle,
  ...
  );

/**
  Reinstalls a protocol interface on a device handle.

  @param[in]  Handle            Handle on which the interface is to be reinstalled.
  @param[in]  Protocol          The numeric ID of the interface.
  @param[in]  OldInterface      A pointer to the old interface. NULL can be used if a structure is not
                                associated with Protocol.
  @param[in]  NewInterface      A pointer to the new interface.

  @retval EFI_SUCCESS           The protocol interface was reinstalled.
  @retval EFI_NOT_FOUND         The OldInterface on the handle was not found.
  @retval EFI_ACCESS_DENIED     The protocol interface could not be reinstalled,
                                because OldInterface is still being used by a
                                driver that will not release it.
  @retval EFI_INVALID_PARAMETER Handle is NULL.
  @retval EFI_INVALID_PARAMETER Protocol is NULL.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_REINSTALL_PROTOCOL_INTERFACE)(
  IN EFI_HANDLE               Handle,
  IN EFI_GUID                 *Protocol,
  IN VOID                     *OldInterface,
  IN VOID                     *NewInterface
  );

/**
  Removes a protocol interface from a device handle. It is recommended that
  UninstallMultipleProtocolInterfaces() be used in place of
  UninstallProtocolInterface().

  @param[in]  Handle            The handle on which the interface was installed.
  @param[in]  Protocol          The numeric ID of the interface.
  @param[in]  Interface         A pointer to the interface.

  @retval EFI_SUCCESS           The interface was removed.
  @retval EFI_NOT_FOUND         The interface was not found.
  @retval EFI_ACCESS_DENIED     The interface was not removed because the interface
                                is still being used by a driver.
  @retval EFI_INVALID_PARAMETER Handle is NULL.
  @retval EFI_INVALID_PARAMETER Protocol is NULL.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_UNINSTALL_PROTOCOL_INTERFACE)(
  IN EFI_HANDLE               Handle,
  IN EFI_GUID                 *Protocol,
  IN VOID                     *Interface
  );

/**
  Removes one or more protocol interfaces into the boot services environment.

  @param[in]  Handle            The handle to remove the protocol interfaces from.
  @param  ...                   A variable argument list containing pairs of protocol GUIDs and
                                protocol interfaces.

  @retval EFI_SUCCESS           All the protocol interfaces were removed.
  @retval EFI_INVALID_PARAMETER One of the protocol interfaces was not previously installed on Handle.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_UNINSTALL_MULTIPLE_PROTOCOL_INTERFACES)(
  IN EFI_HANDLE           Handle,
  ...
  );

/**
  Queries a handle to determine if it supports a specified protocol.

  @param[in]   Handle           The handle being queried.
  @param[in]   Protocol         The published unique identifier of the protocol.
  @param[out]  Interface        Supplies the address where a pointer to the corresponding Protocol
                                Interface is returned.

  @retval EFI_SUCCESS           The interface information for the specified protocol was returned.
  @retval EFI_UNSUPPORTED       The device does not support the specified protocol.
  @retval EFI_INVALID_PARAMETER Handle is NULL.
  @retval EFI_INVALID_PARAMETER Protocol is NULL.
  @retval EFI_INVALID_PARAMETER Interface is NULL.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_HANDLE_PROTOCOL)(
  IN  EFI_HANDLE               Handle,
  IN  EFI_GUID                 *Protocol,
  OUT VOID                     **Interface
  );

#define EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL  0x00000001
#define EFI_OPEN_PROTOCOL_GET_PROTOCOL        0x00000002
#define EFI_OPEN_PROTOCOL_TEST_PROTOCOL       0x00000004
#define EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER 0x00000008
#define EFI_OPEN_PROTOCOL_BY_DRIVER           0x00000010
#define EFI_OPEN_PROTOCOL_EXCLUSIVE           0x00000020

/**
  Queries a handle to determine if it supports a specified protocol. If the protocol is supported by the
  handle, it opens the protocol on behalf of the calling agent.

  @param[in]   Handle           The handle for the protocol interface that is being opened.
  @param[in]   Protocol         The published unique identifier of the protocol.
  @param[out]  Interface        Supplies the address where a pointer to the corresponding Protocol
                                Interface is returned.
  @param[in]   AgentHandle      The handle of the agent that is opening the protocol interface
                                specified by Protocol and Interface.
  @param[in]   ControllerHandle If the agent that is opening a protocol is a driver that follows the
                                UEFI Driver Model, then this parameter is the controller handle
                                that requires the protocol interface. If the agent does not follow
                                the UEFI Driver Model, then this parameter is optional and may
                                be NULL.
  @param[in]   Attributes       The open mode of the protocol interface specified by Handle
                                and Protocol.

  @retval EFI_SUCCESS           An item was added to the open list for the protocol interface, and the
                                protocol interface was returned in Interface.
  @retval EFI_UNSUPPORTED       Handle does not support Protocol.
  @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
  @retval EFI_ACCESS_DENIED     Required attributes can't be supported in current environment.
  @retval EFI_ALREADY_STARTED   Item on the open list already has requierd attributes whose agent
                                handle is the same as AgentHandle.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_OPEN_PROTOCOL)(
  IN  EFI_HANDLE                Handle,
  IN  EFI_GUID                  *Protocol,
  OUT VOID                      **Interface, OPTIONAL
  IN  EFI_HANDLE                AgentHandle,
  IN  EFI_HANDLE                ControllerHandle,
  IN  UINT32                    Attributes
  );


/**
  Closes a protocol on a handle that was opened using OpenProtocol().

  @param[in]  Handle            The handle for the protocol interface that was previously opened
                                with OpenProtocol(), and is now being closed.
  @param[in]  Protocol          The published unique identifier of the protocol.
  @param[in]  AgentHandle       The handle of the agent that is closing the protocol interface.
  @param[in]  ControllerHandle  If the agent that opened a protocol is a driver that follows the
                                UEFI Driver Model, then this parameter is the controller handle
                                that required the protocol interface.

  @retval EFI_SUCCESS           The protocol instance was closed.
  @retval EFI_INVALID_PARAMETER 1) Handle is NULL.
                                2) AgentHandle is NULL.
                                3) ControllerHandle is not NULL and ControllerHandle is not a valid EFI_HANDLE.
                                4) Protocol is NULL.
  @retval EFI_NOT_FOUND         1) Handle does not support the protocol specified by Protocol.
                                2) The protocol interface specified by Handle and Protocol is not
                                   currently open by AgentHandle and ControllerHandle.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_CLOSE_PROTOCOL)(
  IN EFI_HANDLE               Handle,
  IN EFI_GUID                 *Protocol,
  IN EFI_HANDLE               AgentHandle,
  IN EFI_HANDLE               ControllerHandle
  );

///
/// EFI Oprn Protocol Information Entry
///
typedef struct {
  EFI_HANDLE  AgentHandle;
  EFI_HANDLE  ControllerHandle;
  UINT32      Attributes;
  UINT32      OpenCount;
} EFI_OPEN_PROTOCOL_INFORMATION_ENTRY;

/**
  Retrieves the list of agents that currently have a protocol interface opened.

  @param[in]   Handle           The handle for the protocol interface that is being queried.
  @param[in]   Protocol         The published unique identifier of the protocol.
  @param[out]  EntryBuffer      A pointer to a buffer of open protocol information in the form of
                                EFI_OPEN_PROTOCOL_INFORMATION_ENTRY structures.
  @param[out]  EntryCount       A pointer to the number of entries in EntryBuffer.

  @retval EFI_SUCCESS           The open protocol information was returned in EntryBuffer, and the
                                number of entries was returned EntryCount.
  @retval EFI_OUT_OF_RESOURCES  There are not enough resources available to allocate EntryBuffer.
  @retval EFI_NOT_FOUND         Handle does not support the protocol specified by Protocol.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_OPEN_PROTOCOL_INFORMATION)(
  IN  EFI_HANDLE                          Handle,
  IN  EFI_GUID                            *Protocol,
  OUT EFI_OPEN_PROTOCOL_INFORMATION_ENTRY **EntryBuffer,
  OUT UINTN                               *EntryCount
  );

/**
  Retrieves the list of protocol interface GUIDs that are installed on a handle in a buffer allocated
  from pool.

  @param[in]   Handle              The handle from which to retrieve the list of protocol interface
                                   GUIDs.
  @param[out]  ProtocolBuffer      A pointer to the list of protocol interface GUID pointers that are
                                   installed on Handle.
  @param[out]  ProtocolBufferCount A pointer to the number of GUID pointers present in
                                   ProtocolBuffer.

  @retval EFI_SUCCESS           The list of protocol interface GUIDs installed on Handle was returned in
                                ProtocolBuffer. The number of protocol interface GUIDs was
                                returned in ProtocolBufferCount.
  @retval EFI_OUT_OF_RESOURCES  There is not enough pool memory to store the results.
  @retval EFI_INVALID_PARAMETER Handle is NULL.
  @retval EFI_INVALID_PARAMETER Handle is not a valid EFI_HANDLE.
  @retval EFI_INVALID_PARAMETER ProtocolBuffer is NULL.
  @retval EFI_INVALID_PARAMETER ProtocolBufferCount is NULL.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_PROTOCOLS_PER_HANDLE)(
  IN  EFI_HANDLE      Handle,
  OUT EFI_GUID        ***ProtocolBuffer,
  OUT UINTN           *ProtocolBufferCount
  );

/**
  Creates an event that is to be signaled whenever an interface is installed for a specified protocol.

  @param[in]   Protocol         The numeric ID of the protocol for which the event is to be registered.
  @param[in]   Event            Event that is to be signaled whenever a protocol interface is registered
                                for Protocol.
  @param[out]  Registration     A pointer to a memory location to receive the registration value.

  @retval EFI_SUCCESS           The notification event has been registered.
  @retval EFI_OUT_OF_RESOURCES  Space for the notification event could not be allocated.
  @retval EFI_INVALID_PARAMETER Protocol is NULL.
  @retval EFI_INVALID_PARAMETER Event is NULL.
  @retval EFI_INVALID_PARAMETER Registration is NULL.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_REGISTER_PROTOCOL_NOTIFY)(
  IN  EFI_GUID                 *Protocol,
  IN  EFI_EVENT                Event,
  OUT VOID                     **Registration
  );

///
/// Enumeration of EFI Locate Search Types
///
typedef enum {
  ///
  /// Retrieve all the handles in the handle database.
  ///
  AllHandles,
  ///
  /// Retrieve the next handle fron a RegisterProtocolNotify() event.
  ///
  ByRegisterNotify,
  ///
  /// Retrieve the set of handles from the handle database that support a 
  /// specified protocol.
  ///
  ByProtocol
} EFI_LOCATE_SEARCH_TYPE;

/**
  Returns an array of handles that support a specified protocol.

  @param[in]       SearchType   Specifies which handle(s) are to be returned.
  @param[in]       Protocol     Specifies the protocol to search by.
  @param[in]       SearchKey    Specifies the search key.
  @param[in, out]  BufferSize   On input, the size in bytes of Buffer. On output, the size in bytes of
                                the array returned in Buffer (if the buffer was large enough) or the
                                size, in bytes, of the buffer needed to obtain the array (if the buffer was
                                not large enough).
  @param[out]      Buffer       The buffer in which the array is returned.

  @retval EFI_SUCCESS           The array of handles was returned.
  @retval EFI_NOT_FOUND         No handles match the search.
  @retval EFI_BUFFER_TOO_SMALL  The BufferSize is too small for the result.
  @retval EFI_INVALID_PARAMETER SearchType is not a member of EFI_LOCATE_SEARCH_TYPE.
  @retval EFI_INVALID_PARAMETER SearchType is ByRegisterNotify and SearchKey is NULL.
  @retval EFI_INVALID_PARAMETER SearchType is ByProtocol and Protocol is NULL.
  @retval EFI_INVALID_PARAMETER One or more matches are found and BufferSize is NULL.
  @retval EFI_INVALID_PARAMETER BufferSize is large enough for the result and Buffer is NULL.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_LOCATE_HANDLE)(
  IN     EFI_LOCATE_SEARCH_TYPE   SearchType,
  IN     EFI_GUID                 *Protocol,    OPTIONAL
  IN     VOID                     *SearchKey,   OPTIONAL
  IN OUT UINTN                    *BufferSize,
  OUT    EFI_HANDLE               *Buffer
  );

/**
  Locates the handle to a device on the device path that supports the specified protocol.

  @param[in]       Protocol     Specifies the protocol to search for.
  @param[in, out]  DevicePath   On input, a pointer to a pointer to the device path. On output, the device
                                path pointer is modified to point to the remaining part of the device
                                path.
  @param[out]      Device       A pointer to the returned device handle.

  @retval EFI_SUCCESS           The resulting handle was returned.
  @retval EFI_NOT_FOUND         No handles match the search.
  @retval EFI_INVALID_PARAMETER Protocol is NULL.
  @retval EFI_INVALID_PARAMETER DevicePath is NULL.
  @retval EFI_INVALID_PARAMETER A handle matched the search and Device is NULL.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_LOCATE_DEVICE_PATH)(
  IN     EFI_GUID                         *Protocol,
  IN OUT EFI_DEVICE_PATH_PROTOCOL         **DevicePath,
  OUT    EFI_HANDLE                       *Device
  );

/**
  Adds, updates, or removes a configuration table entry from the EFI System Table.

  @param[in]  Guid              A pointer to the GUID for the entry to add, update, or remove.
  @param[in]  Table             A pointer to the configuration table for the entry to add, update, or
                                remove. May be NULL.

  @retval EFI_SUCCESS           The (Guid, Table) pair was added, updated, or removed.
  @retval EFI_NOT_FOUND         An attempt was made to delete a nonexistent entry.
  @retval EFI_INVALID_PARAMETER Guid is NULL.
  @retval EFI_OUT_OF_RESOURCES  There is not enough memory available to complete the operation.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_INSTALL_CONFIGURATION_TABLE)(
  IN EFI_GUID                 *Guid,
  IN VOID                     *Table
  );

/**
  Returns an array of handles that support the requested protocol in a buffer allocated from pool.

  @param[in]       SearchType   Specifies which handle(s) are to be returned.
  @param[in]       Protocol     Provides the protocol to search by.
                                This parameter is only valid for a SearchType of ByProtocol.
  @param[in]       SearchKey    Supplies the search key depending on the SearchType.
  @param[in, out]  NoHandles    The number of handles returned in Buffer.
  @param[out]      Buffer       A pointer to the buffer to return the requested array of handles that
                                support Protocol.

  @retval EFI_SUCCESS           The array of handles was returned in Buffer, and the number of
                                handles in Buffer was returned in NoHandles.
  @retval EFI_NOT_FOUND         No handles match the search.
  @retval EFI_OUT_OF_RESOURCES  There is not enough pool memory to store the matching results.
  @retval EFI_INVALID_PARAMETER NoHandles is NULL.
  @retval EFI_INVALID_PARAMETER Buffer is NULL.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_LOCATE_HANDLE_BUFFER)(
  IN     EFI_LOCATE_SEARCH_TYPE       SearchType,
  IN     EFI_GUID                     *Protocol,      OPTIONAL
  IN     VOID                         *SearchKey,     OPTIONAL
  IN OUT UINTN                        *NoHandles,
  OUT    EFI_HANDLE                   **Buffer
  );

/**
  Returns the first protocol instance that matches the given protocol.

  @param[in]  Protocol          Provides the protocol to search for.
  @param[in]  Registration      Optional registration key returned from
                                RegisterProtocolNotify().
  @param[out]  Interface        On return, a pointer to the first interface that matches Protocol and
                                Registration.

  @retval EFI_SUCCESS           A protocol instance matching Protocol was found and returned in
                                Interface.
  @retval EFI_NOT_FOUND         No protocol instances were found that match Protocol and
                                Registration.
  @retval EFI_INVALID_PARAMETER Interface is NULL.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_LOCATE_PROTOCOL)(
  IN  EFI_GUID  *Protocol,
  IN  VOID      *Registration, OPTIONAL
  OUT VOID      **Interface
  );

///
/// EFI Capsule Block Descriptor
///
typedef struct {
  ///
  /// Length in bytes of the data pointed to by DataBlock/ContinuationPointer.
  ///
  UINT64                  Length;
  union {
    ///
    /// Physical address of the data block. This member of the union is
    /// used if Length is not equal to zero.
    ///
    EFI_PHYSICAL_ADDRESS  DataBlock;
    ///
    /// Physical address of another block of
    /// EFI_CAPSULE_BLOCK_DESCRIPTOR structures. This
    /// member of the union is used if Length is equal to zero. If
    /// ContinuationPointer is zero this entry represents the end of the list.
    ///
    EFI_PHYSICAL_ADDRESS  ContinuationPointer;
  } Union;
} EFI_CAPSULE_BLOCK_DESCRIPTOR;

///
/// EFI Capsule Header.
///
typedef struct {
  ///
  /// A GUID that defines the contents of a capsule.
  ///
  EFI_GUID          CapsuleGuid;
  ///
  /// The size of the capsule header. This may be larger than the size of
  /// the EFI_CAPSULE_HEADER since CapsuleGuid may imply
  /// extended header entries
  ///
  UINT32            HeaderSize;
  ///
  /// Bit-mapped list describing the capsule attributes. The Flag values
  /// of 0x0000 - 0xFFFF are defined by CapsuleGuid. Flag values
  /// of 0x10000 - 0xFFFFFFFF are defined by this specification
  ///
  UINT32            Flags;
  ///
  /// Size in bytes of the capsule.
  ///
  UINT32            CapsuleImageSize;
} EFI_CAPSULE_HEADER;

///
/// The EFI System Table entry must point to an array of capsules
/// that contain the same CapsuleGuid value. The array must be
/// prefixed by a UINT32 that represents the size of the array of capsules.
///
typedef struct {
  ///
  /// the size of the array of capsules.
  ///
  UINT32   CapsuleArrayNumber;
  ///
  /// Point to an array of capsules that contain the same CapsuleGuid value.
  ///
  VOID*    CapsulePtr[1];
} EFI_CAPSULE_TABLE;

#define CAPSULE_FLAGS_PERSIST_ACROSS_RESET          0x00010000
#define CAPSULE_FLAGS_POPULATE_SYSTEM_TABLE         0x00020000
#define CAPSULE_FLAGS_INITIATE_RESET                0x00040000

/**
  Passes capsules to the firmware with both virtual and physical mapping. Depending on the intended
  consumption, the firmware may process the capsule immediately. If the payload should persist
  across a system reset, the reset value returned from EFI_QueryCapsuleCapabilities must
  be passed into ResetSystem() and will cause the capsule to be processed by the firmware as
  part of the reset process.

  @param[in]  CapsuleHeaderArray Virtual pointer to an array of virtual pointers to the capsules
                                 being passed into update capsule.
  @param[in]  CapsuleCount       Number of pointers to EFI_CAPSULE_HEADER in
                                 CaspuleHeaderArray.
  @param[in]  ScatterGatherList  Physical pointer to a set of
                                 EFI_CAPSULE_BLOCK_DESCRIPTOR that describes the
                                 location in physical memory of a set of capsules.

  @retval EFI_SUCCESS           Valid capsule was passed. If
                                CAPSULE_FLAGS_PERSIT_ACROSS_RESET is not set, the
                                capsule has been successfully processed by the firmware.
  @retval EFI_INVALID_PARAMETER CapsuleSize is NULL, or an incompatible set of flags were
                                set in the capsule header.
  @retval EFI_INVALID_PARAMETER CapsuleCount is 0.
  @retval EFI_DEVICE_ERROR      The capsule update was started, but failed due to a device error.
  @retval EFI_UNSUPPORTED       The capsule type is not supported on this platform.
  @retval EFI_OUT_OF_RESOURCES  When ExitBootServices() has been previously called this error indicates the capsule 
                                is compatible with this platform but is not capable of being submitted or processed 
                                in runtime. The caller may resubmit the capsule prior to ExitBootServices().
  @retval EFI_OUT_OF_RESOURCES  When ExitBootServices() has not been previously called then this error indicates 
                                the capsule is compatible with this platform but there are insufficient resources to process.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_UPDATE_CAPSULE)(
  IN EFI_CAPSULE_HEADER     **CapsuleHeaderArray,
  IN UINTN                  CapsuleCount,
  IN EFI_PHYSICAL_ADDRESS   ScatterGatherList   OPTIONAL
  );

/**
  Returns if the capsule can be supported via UpdateCapsule().

  @param[in]   CapsuleHeaderArray  Virtual pointer to an array of virtual pointers to the capsules
                                   being passed into update capsule.
  @param[in]   CapsuleCount        Number of pointers to EFI_CAPSULE_HEADER in
                                   CaspuleHeaderArray.
  @param[out]  MaxiumCapsuleSize   On output the maximum size that UpdateCapsule() can
                                   support as an argument to UpdateCapsule() via
                                   CapsuleHeaderArray and ScatterGatherList.
  @param[out]  ResetType           Returns the type of reset required for the capsule update.

  @retval EFI_SUCCESS           Valid answer returned.
  @retval EFI_UNSUPPORTED       The capsule type is not supported on this platform, and
                                MaximumCapsuleSize and ResetType are undefined.
  @retval EFI_INVALID_PARAMETER MaximumCapsuleSize is NULL.
  @retval EFI_OUT_OF_RESOURCES  When ExitBootServices() has been previously called this error indicates the capsule 
                                is compatible with this platform but is not capable of being submitted or processed 
                                in runtime. The caller may resubmit the capsule prior to ExitBootServices().
  @retval EFI_OUT_OF_RESOURCES  When ExitBootServices() has not been previously called then this error indicates 
                                the capsule is compatible with this platform but there are insufficient resources to process.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_QUERY_CAPSULE_CAPABILITIES)(
  IN  EFI_CAPSULE_HEADER     **CapsuleHeaderArray,
  IN  UINTN                  CapsuleCount,
  OUT UINT64                 *MaximumCapsuleSize,
  OUT EFI_RESET_TYPE         *ResetType
  );

/**
  Returns information about the EFI variables.

  @param[in]   Attributes                   Attributes bitmask to specify the type of variables on
                                            which to return information.
  @param[out]  MaximumVariableStorageSize   On output the maximum size of the storage space
                                            available for the EFI variables associated with the
                                            attributes specified.
  @param[out]  RemainingVariableStorageSize Returns the remaining size of the storage space
                                            available for the EFI variables associated with the
                                            attributes specified.
  @param[out]  MaximumVariableSize          Returns the maximum size of the individual EFI
                                            variables associated with the attributes specified.

  @retval EFI_SUCCESS                  Valid answer returned.
  @retval EFI_INVALID_PARAMETER        An invalid combination of attribute bits was supplied
  @retval EFI_UNSUPPORTED              The attribute is not supported on this platform, and the
                                       MaximumVariableStorageSize,
                                       RemainingVariableStorageSize, MaximumVariableSize
                                       are undefined.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_QUERY_VARIABLE_INFO)(
  IN  UINT32            Attributes,
  OUT UINT64            *MaximumVariableStorageSize,
  OUT UINT64            *RemainingVariableStorageSize,
  OUT UINT64            *MaximumVariableSize
  );

//
// Firmware should stop at a firmware user interface on next boot
//
#define EFI_OS_INDICATIONS_BOOT_TO_FW_UI                    0x0000000000000001
#define EFI_OS_INDICATIONS_TIMESTAMP_REVOCATION             0x0000000000000002
#define EFI_OS_INDICATIONS_FILE_CAPSULE_DELIVERY_SUPPORTED  0x0000000000000004
#define EFI_OS_INDICATIONS_FMP_CAPSULE_SUPPORTED            0x0000000000000008
#define EFI_OS_INDICATIONS_CAPSULE_RESULT_VAR_SUPPORTED     0x0000000000000010
#define EFI_OS_INDICATIONS_START_PLATFORM_RECOVERY          0x0000000000000040

//
// EFI Runtime Services Table
//
#define EFI_SYSTEM_TABLE_SIGNATURE      SIGNATURE_64 ('I','B','I',' ','S','Y','S','T')
#define EFI_2_60_SYSTEM_TABLE_REVISION  ((2 << 16) | (60))
#define EFI_2_50_SYSTEM_TABLE_REVISION  ((2 << 16) | (50))
#define EFI_2_40_SYSTEM_TABLE_REVISION  ((2 << 16) | (40))
#define EFI_2_31_SYSTEM_TABLE_REVISION  ((2 << 16) | (31))
#define EFI_2_30_SYSTEM_TABLE_REVISION  ((2 << 16) | (30))
#define EFI_2_20_SYSTEM_TABLE_REVISION  ((2 << 16) | (20))
#define EFI_2_10_SYSTEM_TABLE_REVISION  ((2 << 16) | (10))
#define EFI_2_00_SYSTEM_TABLE_REVISION  ((2 << 16) | (00))
#define EFI_1_10_SYSTEM_TABLE_REVISION  ((1 << 16) | (10))
#define EFI_1_02_SYSTEM_TABLE_REVISION  ((1 << 16) | (02))
#define EFI_SYSTEM_TABLE_REVISION       EFI_2_60_SYSTEM_TABLE_REVISION
#define EFI_SPECIFICATION_VERSION       EFI_SYSTEM_TABLE_REVISION

#define EFI_RUNTIME_SERVICES_SIGNATURE  SIGNATURE_64 ('R','U','N','T','S','E','R','V')
#define EFI_RUNTIME_SERVICES_REVISION   EFI_SPECIFICATION_VERSION

///
/// EFI Runtime Services Table.
///
typedef struct {
  ///
  /// The table header for the EFI Runtime Services Table.
  ///
  EFI_TABLE_HEADER                Hdr;

  //
  // Time Services
  //
  EFI_GET_TIME                    GetTime;
  EFI_SET_TIME                    SetTime;
  EFI_GET_WAKEUP_TIME             GetWakeupTime;
  EFI_SET_WAKEUP_TIME             SetWakeupTime;

  //
  // Virtual Memory Services
  //
  EFI_SET_VIRTUAL_ADDRESS_MAP     SetVirtualAddressMap;
  EFI_CONVERT_POINTER             ConvertPointer;

  //
  // Variable Services
  //
  EFI_GET_VARIABLE                GetVariable;
  EFI_GET_NEXT_VARIABLE_NAME      GetNextVariableName;
  EFI_SET_VARIABLE                SetVariable;

  //
  // Miscellaneous Services
  //
  EFI_GET_NEXT_HIGH_MONO_COUNT    GetNextHighMonotonicCount;
  EFI_RESET_SYSTEM                ResetSystem;

  //
  // UEFI 2.0 Capsule Services
  //
  EFI_UPDATE_CAPSULE              UpdateCapsule;
  EFI_QUERY_CAPSULE_CAPABILITIES  QueryCapsuleCapabilities;

  //
  // Miscellaneous UEFI 2.0 Service
  //
  EFI_QUERY_VARIABLE_INFO         QueryVariableInfo;
} EFI_RUNTIME_SERVICES;


#define EFI_BOOT_SERVICES_SIGNATURE   SIGNATURE_64 ('B','O','O','T','S','E','R','V')
#define EFI_BOOT_SERVICES_REVISION    EFI_SPECIFICATION_VERSION

///
/// EFI Boot Services Table.
///
typedef struct {
  ///
  /// The table header for the EFI Boot Services Table.
  ///
  EFI_TABLE_HEADER                Hdr;

  //
  // Task Priority Services
  //
  EFI_RAISE_TPL                   RaiseTPL;
  EFI_RESTORE_TPL                 RestoreTPL;

  //
  // Memory Services
  //
  EFI_ALLOCATE_PAGES              AllocatePages;
  EFI_FREE_PAGES                  FreePages;
  EFI_GET_MEMORY_MAP              GetMemoryMap;
  EFI_ALLOCATE_POOL               AllocatePool;
  EFI_FREE_POOL                   FreePool;

  //
  // Event & Timer Services
  //
  EFI_CREATE_EVENT                  CreateEvent;
  EFI_SET_TIMER                     SetTimer;
  EFI_WAIT_FOR_EVENT                WaitForEvent;
  EFI_SIGNAL_EVENT                  SignalEvent;
  EFI_CLOSE_EVENT                   CloseEvent;
  EFI_CHECK_EVENT                   CheckEvent;

  //
  // Protocol Handler Services
  //
  EFI_INSTALL_PROTOCOL_INTERFACE    InstallProtocolInterface;
  EFI_REINSTALL_PROTOCOL_INTERFACE  ReinstallProtocolInterface;
  EFI_UNINSTALL_PROTOCOL_INTERFACE  UninstallProtocolInterface;
  EFI_HANDLE_PROTOCOL               HandleProtocol;
  VOID                              *Reserved;
  EFI_REGISTER_PROTOCOL_NOTIFY      RegisterProtocolNotify;
  EFI_LOCATE_HANDLE                 LocateHandle;
  EFI_LOCATE_DEVICE_PATH            LocateDevicePath;
  EFI_INSTALL_CONFIGURATION_TABLE   InstallConfigurationTable;

  //
  // Image Services
  //
  EFI_IMAGE_LOAD                    LoadImage;
  EFI_IMAGE_START                   StartImage;
  EFI_EXIT                          Exit;
  EFI_IMAGE_UNLOAD                  UnloadImage;
  EFI_EXIT_BOOT_SERVICES            ExitBootServices;

  //
  // Miscellaneous Services
  //
  EFI_GET_NEXT_MONOTONIC_COUNT      GetNextMonotonicCount;
  EFI_STALL                         Stall;
  EFI_SET_WATCHDOG_TIMER            SetWatchdogTimer;

  //
  // DriverSupport Services
  //
  EFI_CONNECT_CONTROLLER            ConnectController;
  EFI_DISCONNECT_CONTROLLER         DisconnectController;

  //
  // Open and Close Protocol Services
  //
  EFI_OPEN_PROTOCOL                 OpenProtocol;
  EFI_CLOSE_PROTOCOL                CloseProtocol;
  EFI_OPEN_PROTOCOL_INFORMATION     OpenProtocolInformation;

  //
  // Library Services
  //
  EFI_PROTOCOLS_PER_HANDLE          ProtocolsPerHandle;
  EFI_LOCATE_HANDLE_BUFFER          LocateHandleBuffer;
  EFI_LOCATE_PROTOCOL               LocateProtocol;
  EFI_INSTALL_MULTIPLE_PROTOCOL_INTERFACES    InstallMultipleProtocolInterfaces;
  EFI_UNINSTALL_MULTIPLE_PROTOCOL_INTERFACES  UninstallMultipleProtocolInterfaces;

  //
  // 32-bit CRC Services
  //
  EFI_CALCULATE_CRC32               CalculateCrc32;

  //
  // Miscellaneous Services
  //
  EFI_COPY_MEM                      CopyMem;
  EFI_SET_MEM                       SetMem;
  EFI_CREATE_EVENT_EX               CreateEventEx;
} EFI_BOOT_SERVICES;

///
/// Contains a set of GUID/pointer pairs comprised of the ConfigurationTable field in the
/// EFI System Table.
///
typedef struct {
  ///
  /// The 128-bit GUID value that uniquely identifies the system configuration table.
  ///
  EFI_GUID                          VendorGuid;
  ///
  /// A pointer to the table associated with VendorGuid.
  ///
  VOID                              *VendorTable;
} EFI_CONFIGURATION_TABLE;

///
/// EFI System Table
///
typedef struct {
  ///
  /// The table header for the EFI System Table.
  ///
  EFI_TABLE_HEADER                  Hdr;
  ///
  /// A pointer to a null terminated string that identifies the vendor
  /// that produces the system firmware for the platform.
  ///
  CHAR16                            *FirmwareVendor;
  ///
  /// A firmware vendor specific value that identifies the revision
  /// of the system firmware for the platform.
  ///
  UINT32                            FirmwareRevision;
  ///
  /// The handle for the active console input device. This handle must support
  /// EFI_SIMPLE_TEXT_INPUT_PROTOCOL and EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL.
  ///
  EFI_HANDLE                        ConsoleInHandle;
  ///
  /// A pointer to the EFI_SIMPLE_TEXT_INPUT_PROTOCOL interface that is
  /// associated with ConsoleInHandle.
  ///
  EFI_SIMPLE_TEXT_INPUT_PROTOCOL    *ConIn;
  ///
  /// The handle for the active console output device.
  ///
  EFI_HANDLE                        ConsoleOutHandle;
  ///
  /// A pointer to the EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL interface
  /// that is associated with ConsoleOutHandle.
  ///
  EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL   *ConOut;
  ///
  /// The handle for the active standard error console device.
  /// This handle must support the EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL.
  ///
  EFI_HANDLE                        StandardErrorHandle;
  ///
  /// A pointer to the EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL interface
  /// that is associated with StandardErrorHandle.
  ///
  EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL   *StdErr;
  ///
  /// A pointer to the EFI Runtime Services Table.
  ///
  EFI_RUNTIME_SERVICES              *RuntimeServices;
  ///
  /// A pointer to the EFI Boot Services Table.
  ///
  EFI_BOOT_SERVICES                 *BootServices;
  ///
  /// The number of system configuration tables in the buffer ConfigurationTable.
  ///
  UINTN                             NumberOfTableEntries;
  ///
  /// A pointer to the system configuration tables.
  /// The number of entries in the table is NumberOfTableEntries.
  ///
  EFI_CONFIGURATION_TABLE           *ConfigurationTable;
} EFI_SYSTEM_TABLE;

/**
  This is the declaration of an EFI image entry point. This entry point is
  the same for UEFI Applications, UEFI OS Loaders, and UEFI Drivers including
  both device drivers and bus drivers.

  @param[in]  ImageHandle       The firmware allocated handle for the UEFI image.
  @param[in]  SystemTable       A pointer to the EFI System Table.

  @retval EFI_SUCCESS           The operation completed successfully.
  @retval Others                An unexpected error occurred.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_IMAGE_ENTRY_POINT)(
  IN  EFI_HANDLE                   ImageHandle,
  IN  EFI_SYSTEM_TABLE             *SystemTable
  );

//
// EFI Load Option. This data structure describes format of UEFI boot option variables.
//
// NOTE: EFI Load Option is a byte packed buffer of variable length fields.
// The first two fields have fixed length. They are declared as members of the
// EFI_LOAD_OPTION structure. All the other fields are variable length fields.
// They are listed in the comment block below for reference purposes.
//
#pragma pack(1)
typedef struct _EFI_LOAD_OPTION {
  ///
  /// The attributes for this load option entry. All unused bits must be zero
  /// and are reserved by the UEFI specification for future growth.
  ///
  UINT32                           Attributes;
  ///
  /// Length in bytes of the FilePathList. OptionalData starts at offset
  /// sizeof(UINT32) + sizeof(UINT16) + StrSize(Description) + FilePathListLength
  /// of the EFI_LOAD_OPTION descriptor.
  ///
  UINT16                           FilePathListLength;
  ///
  /// The user readable description for the load option.
  /// This field ends with a Null character.
  ///
  // CHAR16                        Description[];
  ///
  /// A packed array of UEFI device paths. The first element of the array is a
  /// device path that describes the device and location of the Image for this
  /// load option. The FilePathList[0] is specific to the device type. Other
  /// device paths may optionally exist in the FilePathList, but their usage is
  /// OSV specific. Each element in the array is variable length, and ends at
  /// the device path end structure. Because the size of Description is
  /// arbitrary, this data structure is not guaranteed to be aligned on a
  /// natural boundary. This data structure may have to be copied to an aligned
  /// natural boundary before it is used.
  ///
  // EFI_DEVICE_PATH_PROTOCOL      FilePathList[];
  ///
  /// The remaining bytes in the load option descriptor are a binary data buffer
  /// that is passed to the loaded image. If the field is zero bytes long, a
  /// NULL pointer is passed to the loaded image. The number of bytes in
  /// OptionalData can be computed by subtracting the starting offset of
  /// OptionalData from total size in bytes of the EFI_LOAD_OPTION.
  ///
  // UINT8                         OptionalData[];
} EFI_LOAD_OPTION;
#pragma pack()

//
// EFI Load Options Attributes
//
#define LOAD_OPTION_ACTIVE              0x00000001
#define LOAD_OPTION_FORCE_RECONNECT     0x00000002
#define LOAD_OPTION_HIDDEN              0x00000008
#define LOAD_OPTION_CATEGORY            0x00001F00

#define LOAD_OPTION_CATEGORY_BOOT       0x00000000
#define LOAD_OPTION_CATEGORY_APP        0x00000100

#define EFI_BOOT_OPTION_SUPPORT_KEY     0x00000001
#define EFI_BOOT_OPTION_SUPPORT_APP     0x00000002
#define EFI_BOOT_OPTION_SUPPORT_SYSPREP 0x00000010
#define EFI_BOOT_OPTION_SUPPORT_COUNT   0x00000300

///
/// EFI Boot Key Data
///
typedef union {
  struct {
    ///
    /// Indicates the revision of the EFI_KEY_OPTION structure. This revision level should be 0.
    ///
    UINT32  Revision        : 8;
    ///
    /// Either the left or right Shift keys must be pressed (1) or must not be pressed (0).
    ///
    UINT32  ShiftPressed    : 1;
    ///
    /// Either the left or right Control keys must be pressed (1) or must not be pressed (0).
    ///
    UINT32  ControlPressed  : 1;
    ///
    /// Either the left or right Alt keys must be pressed (1) or must not be pressed (0).
    ///
    UINT32  AltPressed      : 1;
    ///
    /// Either the left or right Logo keys must be pressed (1) or must not be pressed (0).
    ///
    UINT32  LogoPressed     : 1;
    ///
    /// The Menu key must be pressed (1) or must not be pressed (0).
    ///
    UINT32  MenuPressed     : 1;
    ///
    /// The SysReq key must be pressed (1) or must not be pressed (0).
    ///
    UINT32  SysReqPressed    : 1;
    UINT32  Reserved        : 16;
    ///
    /// Specifies the actual number of entries in EFI_KEY_OPTION.Keys, from 0-3. If
    /// zero, then only the shift state is considered. If more than one, then the boot option will
    /// only be launched if all of the specified keys are pressed with the same shift state.
    ///
    UINT32  InputKeyCount   : 2;
  } Options;
  UINT32  PackedValue;
} EFI_BOOT_KEY_DATA;

///
/// EFI Key Option.
///
#pragma pack(1)
typedef struct {
  ///
  /// Specifies options about how the key will be processed.
  ///
  EFI_BOOT_KEY_DATA  KeyData;
  ///
  /// The CRC-32 which should match the CRC-32 of the entire EFI_LOAD_OPTION to
  /// which BootOption refers. If the CRC-32s do not match this value, then this key
  /// option is ignored.
  ///
  UINT32             BootOptionCrc;
  ///
  /// The Boot#### option which will be invoked if this key is pressed and the boot option
  /// is active (LOAD_OPTION_ACTIVE is set).
  ///
  UINT16             BootOption;
  ///
  /// The key codes to compare against those returned by the
  /// EFI_SIMPLE_TEXT_INPUT and EFI_SIMPLE_TEXT_INPUT_EX protocols.
  /// The number of key codes (0-3) is specified by the EFI_KEY_CODE_COUNT field in KeyOptions.
  ///
  //EFI_INPUT_KEY      Keys[];
} EFI_KEY_OPTION;
#pragma pack()

//
// EFI File location to boot from on removable media devices
//
#define EFI_REMOVABLE_MEDIA_FILE_NAME_IA32    L"\\EFI\\BOOT\\BOOTIA32.EFI"
#define EFI_REMOVABLE_MEDIA_FILE_NAME_IA64    L"\\EFI\\BOOT\\BOOTIA64.EFI"
#define EFI_REMOVABLE_MEDIA_FILE_NAME_X64     L"\\EFI\\BOOT\\BOOTX64.EFI"
#define EFI_REMOVABLE_MEDIA_FILE_NAME_ARM     L"\\EFI\\BOOT\\BOOTARM.EFI"
#define EFI_REMOVABLE_MEDIA_FILE_NAME_AARCH64 L"\\EFI\\BOOT\\BOOTAA64.EFI"

#if   defined (MDE_CPU_IA32)
  #define EFI_REMOVABLE_MEDIA_FILE_NAME   EFI_REMOVABLE_MEDIA_FILE_NAME_IA32
#elif defined (MDE_CPU_IPF)
  #define EFI_REMOVABLE_MEDIA_FILE_NAME   EFI_REMOVABLE_MEDIA_FILE_NAME_IA64
#elif defined (MDE_CPU_X64)
  #define EFI_REMOVABLE_MEDIA_FILE_NAME   EFI_REMOVABLE_MEDIA_FILE_NAME_X64
#elif defined (MDE_CPU_EBC)
#elif defined (MDE_CPU_ARM)
  #define EFI_REMOVABLE_MEDIA_FILE_NAME   EFI_REMOVABLE_MEDIA_FILE_NAME_ARM
#elif defined (MDE_CPU_AARCH64)
  #define EFI_REMOVABLE_MEDIA_FILE_NAME   EFI_REMOVABLE_MEDIA_FILE_NAME_AARCH64
#else
  #error Unknown Processor Type
#endif

#include <Uefi/UefiPxe.h>
#include <Uefi/UefiGpt.h>
#include <Uefi/UefiInternalFormRepresentation.h>

#endif