1 /*++ 2 3 Copyright (c) 1999 - 2014, Intel Corporation. All rights reserved 4 5 6 This program and the accompanying materials are licensed and made available under 7 8 the terms and conditions of the BSD License that accompanies this distribution. 9 10 The full text of the license may be found at 11 12 http://opensource.org/licenses/bsd-license.php. 13 14 15 16 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 17 18 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 19 20 21 22 23 --*/ 24 25 /** @file 26 **/ 27 28 #include <Library/BaseMemoryLib.h> 29 #include <Library/DebugLib.h> 30 #include <Protocol/FirmwareVolume2.h> 31 #include <Protocol/PlatformGopPolicy.h> 32 33 #include <Guid/SetupVariable.h> 34 #include <SetupMode.h> 35 #include <Library/UefiBootServicesTableLib.h> 36 #include <Library/UefiRuntimeServicesTableLib.h> 37 38 PLATFORM_GOP_POLICY_PROTOCOL mPlatformGOPPolicy; 39 40 // 41 // Function implementations 42 // 43 44 /** 45 The function will execute with as the platform policy, and gives 46 the Platform Lid Status. IBV/OEM can customize this code for their specific GetPlatformLidStatus(OUT LID_STATUS * CurrentLidStatus)47 policy action. 48 49 @param CurrentLidStatus Gives the current LID Status 50 51 @retval EFI_SUCCESS. 52 53 **/ 54 EFI_STATUS 55 EFIAPI 56 GetPlatformLidStatus ( 57 OUT LID_STATUS *CurrentLidStatus 58 ) 59 { 60 *CurrentLidStatus = LidOpen; 61 62 return EFI_SUCCESS; 63 } 64 65 /** 66 The function will execute and gives the Video Bios Table Size and Address. 67 68 @param VbtAddress Gives the Physical Address of Video BIOS Table GetVbtData(OUT EFI_PHYSICAL_ADDRESS * VbtAddress,OUT UINT32 * VbtSize)69 70 @param VbtSize Gives the Size of Video BIOS Table 71 72 @retval EFI_STATUS. 73 74 **/ 75 76 EFI_STATUS 77 EFIAPI 78 GetVbtData ( 79 OUT EFI_PHYSICAL_ADDRESS *VbtAddress, 80 OUT UINT32 *VbtSize 81 ) 82 { 83 EFI_STATUS Status; 84 UINTN FvProtocolCount; 85 EFI_HANDLE *FvHandles; 86 EFI_FIRMWARE_VOLUME2_PROTOCOL *Fv; 87 UINTN Index; 88 UINT32 AuthenticationStatus; 89 90 UINT8 *Buffer; 91 UINTN VbtBufferSize; 92 93 Buffer = 0; 94 FvHandles = NULL; 95 96 if (VbtAddress == NULL || VbtSize == NULL){ 97 return EFI_INVALID_PARAMETER; 98 } 99 Status = gBS->LocateHandleBuffer ( 100 ByProtocol, 101 &gEfiFirmwareVolume2ProtocolGuid, 102 NULL, 103 &FvProtocolCount, 104 &FvHandles 105 ); 106 107 if (!EFI_ERROR (Status)) { 108 for (Index = 0; Index < FvProtocolCount; Index++) { 109 Status = gBS->HandleProtocol ( 110 FvHandles[Index], 111 &gEfiFirmwareVolume2ProtocolGuid, 112 (VOID **) &Fv 113 ); 114 VbtBufferSize = 0; 115 Status = Fv->ReadSection ( 116 Fv, 117 &gBmpImageGuid, 118 EFI_SECTION_RAW, 119 0, 120 (void **)&Buffer, 121 &VbtBufferSize, 122 &AuthenticationStatus 123 ); 124 125 if (!EFI_ERROR (Status)) { 126 *VbtAddress = (EFI_PHYSICAL_ADDRESS)(UINTN)Buffer; 127 *VbtSize = (UINT32)VbtBufferSize; 128 Status = EFI_SUCCESS; 129 break; 130 } 131 } 132 } else { 133 Status = EFI_NOT_FOUND; 134 } 135 136 if (FvHandles != NULL) { 137 gBS->FreePool (FvHandles); 138 FvHandles = NULL; 139 } 140 141 return Status; 142 } 143 144 /** 145 Entry point for the Platform GOP Policy Driver. 146 147 @param ImageHandle Image handle of this driver. PlatformGOPPolicyEntryPoint(IN EFI_HANDLE ImageHandle,IN EFI_SYSTEM_TABLE * SystemTable)148 @param SystemTable Global system service table. 149 150 @retval EFI_SUCCESS Initialization complete. 151 @retval EFI_OUT_OF_RESOURCES Do not have enough resources to initialize the driver. 152 153 **/ 154 155 EFI_STATUS 156 EFIAPI 157 PlatformGOPPolicyEntryPoint ( 158 IN EFI_HANDLE ImageHandle, 159 IN EFI_SYSTEM_TABLE *SystemTable 160 ) 161 162 { 163 EFI_STATUS Status = EFI_SUCCESS; 164 SYSTEM_CONFIGURATION SystemConfiguration; 165 UINTN VarSize; 166 167 168 gBS = SystemTable->BootServices; 169 170 gBS->SetMem ( 171 &mPlatformGOPPolicy, 172 sizeof (PLATFORM_GOP_POLICY_PROTOCOL), 173 0 174 ); 175 176 mPlatformGOPPolicy.Revision = PLATFORM_GOP_POLICY_PROTOCOL_REVISION_01; 177 mPlatformGOPPolicy.GetPlatformLidStatus = GetPlatformLidStatus; 178 mPlatformGOPPolicy.GetVbtData = GetVbtData; 179 180 // 181 // Install protocol to allow access to this Policy. 182 // 183 VarSize = sizeof(SYSTEM_CONFIGURATION); 184 Status = gRT->GetVariable( 185 L"Setup", 186 &gEfiNormalSetupGuid, 187 NULL, 188 &VarSize, 189 &SystemConfiguration 190 ); 191 if (EFI_ERROR (Status) || VarSize != sizeof(SYSTEM_CONFIGURATION)) { 192 //The setup variable is corrupted 193 VarSize = sizeof(SYSTEM_CONFIGURATION); 194 Status = gRT->GetVariable( 195 L"SetupRecovery", 196 &gEfiNormalSetupGuid, 197 NULL, 198 &VarSize, 199 &SystemConfiguration 200 ); 201 ASSERT_EFI_ERROR (Status); 202 } 203 204 if (SystemConfiguration.GOPEnable == 1) 205 { 206 Status = gBS->InstallMultipleProtocolInterfaces ( 207 &ImageHandle, 208 &gPlatformGOPPolicyGuid, 209 &mPlatformGOPPolicy, 210 NULL 211 ); 212 } 213 214 return Status; 215 } 216