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
|
/** @file
Platform GOP Driver Policy.
Copyright (c) 1999 - 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
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 <Library/BaseMemoryLib.h>
#include <Library/DebugLib.h>
#include <Protocol/FirmwareVolume2.h>
#include <Protocol/PlatformGopPolicy.h>
#include <Guid/SetupVariable.h>
#include <SetupMode.h>
#include <Library/UefiRuntimeServicesTableLib.h>
#include <Library/HobLib.h>
#include <Guid/PlatformInfo.h>
EFI_BOOT_SERVICES *gBS;
PLATFORM_GOP_POLICY_PROTOCOL mPlatformGOPPolicy;
extern EFI_GUID gPeiDefaultVbtGuid;
extern EFI_GUID gVbtMipiAuoGuid;
extern EFI_GUID gVbtMipiSharpGuid;
extern EFI_GUID gVbtMipiJdiGuid;
extern EFI_GUID gVbtEdpTypeCGuid;
//
// Function implementations
//
/**
The function will excute with as the platform policy, and gives the
Platform Lid Status. IBV/OEM can customize this code for their specific policy action.
@param[out] CurrentLidStatus Gives the current LID Status
@retval EFI_SUCCESS.
**/
EFI_STATUS
EFIAPI
GetPlatformLidStatus (
OUT LID_STATUS *CurrentLidStatus
)
{
if (CurrentLidStatus == NULL) {
return EFI_INVALID_PARAMETER;
}
*CurrentLidStatus = LidOpen;
return EFI_SUCCESS;
}
/**
The function will excute and gives the Video Bios Table Size and Address.
@param[in] VbtAddress Gives the Physical Address of Video BIOS Table
@param[in] VbtSize Gives the Size of Video BIOS Table
@retval EFI_STATUS
**/
EFI_STATUS
EFIAPI
GetVbtData (
OUT EFI_PHYSICAL_ADDRESS *VbtAddress,
OUT UINT32 *VbtSize
)
{
SYSTEM_CONFIGURATION SystemConfiguration;
UINTN VarSize;
EFI_STATUS Status;
EFI_GUID BmpImageGuid = { 0xE08CA6D5, 0x8D02, 0x43ae, 0xAB, 0xB1, 0x95, 0x2C, 0xC7, 0x87, 0xC9, 0x33 };
UINTN FvProtocolCount;
EFI_HANDLE *FvHandles;
EFI_FIRMWARE_VOLUME2_PROTOCOL *Fv;
UINTN Index;
UINT32 AuthenticationStatus;
UINT8 *Buffer;
UINTN VbtBufferSize;
if (VbtAddress == NULL || VbtSize == NULL){
return EFI_INVALID_PARAMETER;
}
VarSize = sizeof (SYSTEM_CONFIGURATION);
Status = gRT->GetVariable (
L"Setup",
&gEfiSetupVariableGuid,
NULL,
&VarSize,
&SystemConfiguration
);
ASSERT_EFI_ERROR (Status);
BmpImageGuid = gPeiDefaultVbtGuid;
Fv = NULL;
Buffer = 0;
FvHandles = NULL;
Status = gBS->LocateHandleBuffer(
ByProtocol,
&gEfiFirmwareVolume2ProtocolGuid,
NULL,
&FvProtocolCount,
&FvHandles
);
if (!EFI_ERROR (Status)) {
for (Index = 0; Index < FvProtocolCount; Index++) {
Status = gBS->HandleProtocol(
FvHandles[Index],
&gEfiFirmwareVolume2ProtocolGuid,
(VOID **) &Fv
);
VbtBufferSize = 0;
Status = Fv->ReadSection (
Fv,
&BmpImageGuid,
EFI_SECTION_RAW,
0,
&Buffer,
&VbtBufferSize,
&AuthenticationStatus
);
if (!EFI_ERROR (Status)) {
*VbtAddress = (EFI_PHYSICAL_ADDRESS) Buffer;
*VbtSize = (UINT32) VbtBufferSize;
Status = EFI_SUCCESS;
break;
}
}
} else {
Status = EFI_NOT_FOUND;
}
return Status;
}
/**
Entry point for the Platform GOP Policy Driver.
@param[in] ImageHandle Image handle of this driver.
@param[in] SystemTable Global system service table.
@retval EFI_SUCCESS Initialization complete.
@retval EFI_OUT_OF_RESOURCES Do not have enough resources to initialize the driver.
**/
EFI_STATUS
EFIAPI
PlatformGOPPolicyEntryPoint (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status = EFI_SUCCESS;
SYSTEM_CONFIGURATION SystemConfiguration;
UINTN VarSize;
gBS = SystemTable->BootServices;
gBS->SetMem (&mPlatformGOPPolicy, sizeof (PLATFORM_GOP_POLICY_PROTOCOL), 0);
mPlatformGOPPolicy.Revision = PLATFORM_GOP_POLICY_PROTOCOL_REVISION_01;
mPlatformGOPPolicy.GetPlatformLidStatus = GetPlatformLidStatus;
mPlatformGOPPolicy.GetVbtData = GetVbtData;
//
// Install protocol to allow access to this Policy.
//
VarSize = sizeof (SYSTEM_CONFIGURATION);
Status = gRT->GetVariable (
L"Setup",
&gEfiSetupVariableGuid,
NULL,
&VarSize,
&SystemConfiguration
);
ASSERT_EFI_ERROR (Status);
if (SystemConfiguration.GOPEnable == 1) {
Status = gBS->InstallMultipleProtocolInterfaces (
&ImageHandle,
&gPlatformGOPPolicyGuid,
&mPlatformGOPPolicy,
NULL
);
}
return Status;
}
|
