1 /** @file 2 The entry of the embedded BDS. This BDS does not follow the Boot Manager requirements 3 of the UEFI specification as it is designed to implement an embedded systmes 4 propriatary boot scheme. 5 6 This template assume a DXE driver produces a SerialIo protocol not using the EFI 7 driver module and it will attempt to connect a console on top of this. 8 9 10 Copyright (c) 2009, Apple Inc. All rights reserved.<BR> 11 12 This program and the accompanying materials 13 are licensed and made available under the terms and conditions of the BSD License 14 which accompanies this distribution. The full text of the license may be found at 15 http://opensource.org/licenses/bsd-license.php 16 17 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 18 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 19 20 **/ 21 22 #include "BdsEntry.h" 23 24 25 EFI_STATUS 26 FindApplicationMatchingUiSection ( 27 IN CHAR16 *UiString, 28 OUT EFI_HANDLE *FvHandle, 29 OUT EFI_GUID *NameGuid 30 ) 31 { 32 EFI_STATUS Status; 33 EFI_STATUS NextStatus; 34 UINTN NoHandles; 35 EFI_HANDLE *Buffer; 36 UINTN Index; 37 EFI_FV_FILETYPE FileType; 38 EFI_FIRMWARE_VOLUME2_PROTOCOL *Fv; 39 VOID *Key; 40 EFI_FV_FILE_ATTRIBUTES Attributes; 41 UINTN Size; 42 UINTN UiStringLen; 43 CHAR16 *UiSection; 44 UINT32 Authentication; 45 46 47 UiStringLen = 0; 48 if (UiString != NULL) { 49 DEBUG ((DEBUG_ERROR, "UiString %s\n", UiString)); 50 UiStringLen = StrLen (UiString); 51 } 52 53 Status = gBS->LocateHandleBuffer (ByProtocol, &gEfiFirmwareVolume2ProtocolGuid, NULL, &NoHandles, &Buffer); 54 if (!EFI_ERROR (Status)) { 55 for (Index = 0; Index < NoHandles; Index++) { 56 Status = gBS->HandleProtocol (Buffer[Index], &gEfiFirmwareVolume2ProtocolGuid, (VOID **)&Fv); 57 if (!EFI_ERROR (Status)) { 58 Key = AllocatePool (Fv->KeySize); 59 ASSERT (Key != NULL); 60 ZeroMem (Key, Fv->KeySize); 61 62 FileType = EFI_FV_FILETYPE_APPLICATION; 63 64 do { 65 NextStatus = Fv->GetNextFile (Fv, Key, &FileType, NameGuid, &Attributes, &Size); 66 if (!EFI_ERROR (NextStatus)) { 67 if (UiString == NULL) { 68 // 69 // If UiString is NULL match first application we find. 70 // 71 *FvHandle = Buffer[Index]; 72 FreePool (Key); 73 return Status; 74 } 75 76 UiSection = NULL; 77 Status = Fv->ReadSection ( 78 Fv, 79 NameGuid, 80 EFI_SECTION_USER_INTERFACE, 81 0, 82 (VOID **)&UiSection, 83 &Size, 84 &Authentication 85 ); 86 if (!EFI_ERROR (Status)) { 87 if (StrnCmp (UiString, UiSection, UiStringLen) == 0) { 88 // 89 // We found a UiString match. 90 // 91 *FvHandle = Buffer[Index]; 92 FreePool (Key); 93 FreePool (UiSection); 94 return Status; 95 } 96 FreePool (UiSection); 97 } 98 } 99 } while (!EFI_ERROR (NextStatus)); 100 101 FreePool (Key); 102 } 103 } 104 105 FreePool (Buffer); 106 } 107 108 return EFI_NOT_FOUND; 109 } 110 111 112 EFI_DEVICE_PATH * 113 FvFileDevicePath ( 114 IN EFI_HANDLE FvHandle, 115 IN EFI_GUID *NameGuid 116 ) 117 { 118 EFI_DEVICE_PATH_PROTOCOL *DevicePath; 119 MEDIA_FW_VOL_FILEPATH_DEVICE_PATH NewNode; 120 121 DevicePath = DevicePathFromHandle (FvHandle); 122 123 EfiInitializeFwVolDevicepathNode (&NewNode, NameGuid); 124 125 return AppendDevicePathNode (DevicePath, (EFI_DEVICE_PATH_PROTOCOL *)&NewNode); 126 } 127 128 129 130 EFI_STATUS 131 LoadPeCoffSectionFromFv ( 132 IN EFI_HANDLE FvHandle, 133 IN EFI_GUID *NameGuid 134 ) 135 { 136 EFI_STATUS Status; 137 EFI_DEVICE_PATH_PROTOCOL *DevicePath; 138 EFI_HANDLE ImageHandle; 139 140 DevicePath = FvFileDevicePath (FvHandle, NameGuid); 141 142 Status = gBS->LoadImage (TRUE, gImageHandle, DevicePath, NULL, 0, &ImageHandle); 143 if (!EFI_ERROR (Status)) { 144 PERF_END (NULL, "BDS", NULL, 0); 145 Status = gBS->StartImage (ImageHandle, NULL, NULL); 146 } 147 148 return Status; 149 } 150 151
