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
|
/** @file
ACPI Platform Driver
Copyright (c) 2004 - 2015, 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
which 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.
**/
#include <Base.h>
#include <Uefi.h>
#include <Protocol/FirmwareVolume2.h>
#include <Protocol/AcpiTable.h>
#include <Guid/PlatformInfo.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/MemoryAllocationLib.h>
#include <IndustryStandard/Acpi.h>
//
// Function definitions
//
EFI_STATUS
LocateSupportProtocol (
IN EFI_GUID *Protocol,
IN EFI_GUID gEfiAcpiMultiTableStorageGuid,
OUT VOID **Instance,
IN BOOLEAN Type
);
/**
Locate the first instance of a protocol. If the protocol requested is an
FV protocol, then it will return the first FV that contains the ACPI table
storage file.
@param[in] Protocol The protocol to find.
@param[in] Instance Return pointer to the first instance of the protocol.
@param[in] Type TRUE if the desired protocol is a FV protocol.
@retval EFI_SUCCESS The function completed successfully.
@retval EFI_NOT_FOUND The protocol could not be located.
@retval EFI_OUT_OF_RESOURCES There are not enough resources to find the protocol.
**/
EFI_STATUS
LocateSupportProtocol (
IN EFI_GUID *Protocol,
IN EFI_GUID gEfiAcpiMultiTableStorageGuid,
OUT VOID **Instance,
IN BOOLEAN Type
)
{
EFI_STATUS Status;
EFI_HANDLE *HandleBuffer;
UINTN NumberOfHandles;
EFI_FV_FILETYPE FileType;
UINT32 FvStatus;
EFI_FV_FILE_ATTRIBUTES Attributes;
UINTN Size;
UINTN i;
//
// Locate protocol.
//
Status = gBS->LocateHandleBuffer (
ByProtocol,
Protocol,
NULL,
&NumberOfHandles,
&HandleBuffer
);
if (EFI_ERROR (Status)) {
//
// Defined errors at this time are not found and out of resources.
//
return Status;
}
//
// Looking for FV with ACPI storage file
//
for (i = 0; i < NumberOfHandles; i++) {
//
// Get the protocol on this handle
// This should not fail because of LocateHandleBuffer
//
Status = gBS->HandleProtocol (
HandleBuffer[i],
Protocol,
Instance
);
ASSERT_EFI_ERROR (Status);
if (!Type) {
//
// Not looking for the FV protocol, so find the first instance of the
// protocol. There should not be any errors because our handle buffer
// should always contain at least one or LocateHandleBuffer would have
// returned not found.
//
break;
}
//
// See if it has the ACPI storage file
//
Size = 0;
FvStatus = 0;
Status = ((EFI_FIRMWARE_VOLUME2_PROTOCOL *) (*Instance))->ReadFile (
*Instance,
&gEfiAcpiMultiTableStorageGuid,
NULL,
&Size,
&FileType,
&Attributes,
&FvStatus
);
//
// If we found it, then we are done
//
if (Status == EFI_SUCCESS) {
break;
}
}
//
// Our exit status is determined by the success of the previous operations
// If the protocol was found, Instance already points to it.
//
//
// Free any allocated buffers
//
FreePool (HandleBuffer);
return Status;
}
EFI_STATUS
PublishAcpiTablesFromFv (
IN EFI_GUID gEfiAcpiMultiTableStorageGuid
)
{
EFI_STATUS Status;
EFI_FIRMWARE_VOLUME2_PROTOCOL *FwVol;
EFI_ACPI_COMMON_HEADER *CurrentTable;
UINT32 FvStatus;
UINTN Size;
UINTN TableHandle;
INTN Instance;
EFI_ACPI_TABLE_PROTOCOL *AcpiTable;
Instance = 0;
TableHandle = 0;
CurrentTable = NULL;
FwVol = NULL;
//
// Find the AcpiSupport protocol
//
Status = LocateSupportProtocol (
&gEfiAcpiTableProtocolGuid,
gEfiAcpiMultiTableStorageGuid,
&AcpiTable,
FALSE
);
ASSERT_EFI_ERROR (Status);
//
// Locate the firmware volume protocol
//
Status = LocateSupportProtocol (
&gEfiFirmwareVolume2ProtocolGuid,
gEfiAcpiMultiTableStorageGuid,
&FwVol,
TRUE
);
//
// Read tables from the storage file.
//
while (Status == EFI_SUCCESS) {
Status = FwVol->ReadSection (
FwVol,
&gEfiAcpiMultiTableStorageGuid,
EFI_SECTION_RAW,
Instance,
&CurrentTable,
&Size,
&FvStatus
);
if (!EFI_ERROR (Status)) {
//
// Add the table
//
TableHandle = 0;
Status = AcpiTable->InstallAcpiTable (
AcpiTable,
CurrentTable,
CurrentTable->Length,
&TableHandle
);
ASSERT_EFI_ERROR (Status);
//
// Increment the instance
//
Instance++;
CurrentTable = NULL;
}
}
//
// Finished
//
return EFI_SUCCESS;
}
/**
ACPI Platform driver installation function.
@param[in] ImageHandle Handle for this drivers loaded image protocol.
@param[in] SystemTable EFI system table.
@retval EFI_SUCCESS The driver installed without error.
@retval EFI_ABORTED The driver encountered an error and could not complete installation of
the ACPI tables.
**/
EFI_STATUS
InstallAcpiBraswellCherryHill (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_PLATFORM_INFO_HOB *PlatformInfoHob;
PlatformInfoHob = PcdGetPtr (PcdPlatformInfo);
if (PlatformInfoHob->BoardId != BOARD_ID_BSW_CH) {
return EFI_UNSUPPORTED;
}
//
// Platform ACPI Tables
//
PublishAcpiTablesFromFv(gEfiCallerIdGuid);
return EFI_SUCCESS;
}
|