1 /** @file 2 Entrypoint of Extended SAL variable service module. 3 4 Copyright (c) 2009 - 2011, Intel Corporation. All rights reserved.<BR> 5 This program and the accompanying materials 6 are licensed and made available under the terms and conditions of the BSD License 7 which accompanies this distribution. The full text of the license may be found at 8 http://opensource.org/licenses/bsd-license.php 9 10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 12 13 **/ 14 15 #include "Variable.h" 16 #include "AuthService.h" 17 18 // 19 // Don't use module globals after the SetVirtualAddress map is signaled 20 // 21 EFI_EVENT mEfiVirtualNotifyEvent; 22 23 /** 24 Common entry for Extended SAL Variable Services Class. 25 26 This is the common entry of all functions of Extended SAL Variable Services Class. 27 28 @param[in] FunctionId The Function ID of member function in Extended SAL Variable Services Class. 29 @param[in] Arg2 The 2nd parameter for SAL procedure call. 30 @param[in] Arg3 The 3rd parameter for SAL procedure call. 31 @param[in] Arg4 The 4th parameter for SAL procedure call. 32 @param[in] Arg5 The 5th parameter for SAL procedure call. 33 @param[in] Arg6 The 6th parameter for SAL procedure call. 34 @param[in] Arg7 The 7th parameter for SAL procedure call. 35 @param[in] Arg8 The 8th parameter for SAL procedure call. 36 @param[in] VirtualMode The current calling mode for this function. 37 @param[in] Global The context of this Extended SAL Variable Services Class call. 38 39 @return The register of SAL. 40 41 **/ 42 SAL_RETURN_REGS 43 EFIAPI 44 EsalVariableCommonEntry ( 45 IN UINT64 FunctionId, 46 IN UINT64 Arg2, 47 IN UINT64 Arg3, 48 IN UINT64 Arg4, 49 IN UINT64 Arg5, 50 IN UINT64 Arg6, 51 IN UINT64 Arg7, 52 IN UINT64 Arg8, 53 IN BOOLEAN VirtualMode, 54 IN ESAL_VARIABLE_GLOBAL *Global 55 ) 56 { 57 SAL_RETURN_REGS ReturnVal; 58 59 ReturnVal.r9 = 0; 60 ReturnVal.r10 = 0; 61 ReturnVal.r11 = 0; 62 63 switch (FunctionId) { 64 case EsalGetVariableFunctionId: 65 ReturnVal.Status = EsalGetVariable ( 66 (CHAR16 *) Arg2, 67 (EFI_GUID *) Arg3, 68 (UINT32 *) Arg4, 69 (UINTN *) Arg5, 70 (VOID *) Arg6, 71 VirtualMode, 72 Global 73 ); 74 return ReturnVal; 75 76 case EsalGetNextVariableNameFunctionId: 77 ReturnVal.Status = EsalGetNextVariableName ( 78 (UINTN *) Arg2, 79 (CHAR16 *) Arg3, 80 (EFI_GUID *) Arg4, 81 VirtualMode, 82 Global 83 ); 84 return ReturnVal; 85 86 case EsalSetVariableFunctionId: 87 ReturnVal.Status = EsalSetVariable ( 88 (CHAR16 *) Arg2, 89 (EFI_GUID *) Arg3, 90 (UINT32) Arg4, 91 (UINTN) Arg5, 92 (VOID *) Arg6, 93 VirtualMode, 94 Global 95 ); 96 return ReturnVal; 97 98 case EsalQueryVariableInfoFunctionId: 99 ReturnVal.Status = EsalQueryVariableInfo ( 100 (UINT32) Arg2, 101 (UINT64 *) Arg3, 102 (UINT64 *) Arg4, 103 (UINT64 *) Arg5, 104 VirtualMode, 105 Global 106 ); 107 return ReturnVal; 108 109 default: 110 ReturnVal.Status = EFI_SAL_INVALID_ARGUMENT; 111 return ReturnVal; 112 } 113 } 114 115 /** 116 Notification function of EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE. 117 118 This is a notification function registered on EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE event. 119 It convers pointer to new virtual address. 120 121 @param[in] Event The event whose notification function is being invoked. 122 @param[in] Context The pointer to the notification function's context. 123 124 **/ 125 VOID 126 EFIAPI 127 VariableClassAddressChangeEvent ( 128 IN EFI_EVENT Event, 129 IN VOID *Context 130 ) 131 { 132 UINTN Index; 133 134 CopyMem ( 135 &mVariableModuleGlobal->VariableGlobal[Virtual], 136 &mVariableModuleGlobal->VariableGlobal[Physical], 137 sizeof (VARIABLE_GLOBAL) 138 ); 139 140 EfiConvertPointer ( 141 0x0, 142 (VOID **) &mVariableModuleGlobal->VariableGlobal[Virtual].NonVolatileVariableBase 143 ); 144 EfiConvertPointer ( 145 0x0, 146 (VOID **) &mVariableModuleGlobal->VariableGlobal[Virtual].VolatileVariableBase 147 ); 148 149 mVariableModuleGlobal->PlatformLangCodes[Virtual] = mVariableModuleGlobal->PlatformLangCodes[Physical]; 150 EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal->PlatformLangCodes[Virtual]); 151 152 mVariableModuleGlobal->LangCodes[Virtual] = mVariableModuleGlobal->LangCodes[Physical]; 153 EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal->LangCodes[Virtual]); 154 155 mVariableModuleGlobal->PlatformLang[Virtual] = mVariableModuleGlobal->PlatformLang[Physical]; 156 EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal->PlatformLang[Virtual]); 157 158 CopyMem ( 159 mVariableModuleGlobal->VariableName[Virtual], 160 mVariableModuleGlobal->VariableName[Physical], 161 sizeof (mVariableModuleGlobal->VariableName[Physical]) 162 ); 163 for (Index = 0; Index < NUM_VAR_NAME; Index++) { 164 EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal->VariableName[Virtual][Index]); 165 } 166 167 mVariableModuleGlobal->GlobalVariableGuid[Virtual] = &gEfiGlobalVariableGuid; 168 EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal->GlobalVariableGuid[Virtual]); 169 170 mVariableModuleGlobal->AuthenticatedVariableGuid[Virtual] = &gEfiAuthenticatedVariableGuid; 171 EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal->AuthenticatedVariableGuid[Virtual]); 172 173 mVariableModuleGlobal->CertRsa2048Sha256Guid[Virtual] = &gEfiCertRsa2048Sha256Guid; 174 EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal->CertRsa2048Sha256Guid[Virtual]); 175 176 mVariableModuleGlobal->ImageSecurityDatabaseGuid[Virtual] = &gEfiImageSecurityDatabaseGuid; 177 EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal->ImageSecurityDatabaseGuid[Virtual]); 178 179 mVariableModuleGlobal->HashContext[Virtual] = mVariableModuleGlobal->HashContext[Physical]; 180 EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal->HashContext[Virtual]); 181 } 182 183 /** 184 Entry point of Extended SAL Variable service module. 185 186 This function is the entry point of Extended SAL Variable service module. 187 It registers all functions of Extended SAL Variable class, initializes 188 variable store for non-volatile and volatile variables, and registers 189 notification function for EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE event. 190 191 @param[in] ImageHandle The Image handle of this driver. 192 @param[in] SystemTable The pointer of EFI_SYSTEM_TABLE. 193 194 @retval EFI_SUCCESS Extended SAL Variable Services Class successfully registered. 195 196 **/ 197 EFI_STATUS 198 EFIAPI 199 VariableServiceInitialize ( 200 IN EFI_HANDLE ImageHandle, 201 IN EFI_SYSTEM_TABLE *SystemTable 202 ) 203 { 204 EFI_STATUS Status; 205 206 Status = gBS->CreateEventEx ( 207 EVT_NOTIFY_SIGNAL, 208 TPL_NOTIFY, 209 VariableClassAddressChangeEvent, 210 NULL, 211 &gEfiEventVirtualAddressChangeGuid, 212 &mEfiVirtualNotifyEvent 213 ); 214 215 ASSERT_EFI_ERROR (Status); 216 217 Status = VariableCommonInitialize (ImageHandle, SystemTable); 218 ASSERT_EFI_ERROR (Status); 219 220 // 221 // Authenticated variable initialize 222 // 223 Status = AutenticatedVariableServiceInitialize (); 224 ASSERT_EFI_ERROR (Status); 225 226 FlushHob2Nv (); 227 228 // 229 // Register All the Functions with Extended SAL Variable Services Class 230 // 231 RegisterEsalClass ( 232 EFI_EXTENDED_SAL_VARIABLE_SERVICES_PROTOCOL_GUID_LO, 233 EFI_EXTENDED_SAL_VARIABLE_SERVICES_PROTOCOL_GUID_HI, 234 mVariableModuleGlobal, 235 EsalVariableCommonEntry, 236 EsalGetVariableFunctionId, 237 EsalVariableCommonEntry, 238 EsalGetNextVariableNameFunctionId, 239 EsalVariableCommonEntry, 240 EsalSetVariableFunctionId, 241 EsalVariableCommonEntry, 242 EsalQueryVariableInfoFunctionId, 243 NULL 244 ); 245 246 return EFI_SUCCESS; 247 } 248
