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Rev | Author | Line No. | Line |
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2726 | vana | 1 | /*++ |
2 | |||
3 | Copyright (c) 1998 Intel Corporation |
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4 | |||
5 | Module Name: |
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6 | |||
7 | hand.c |
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8 | |||
9 | Abstract: |
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10 | |||
11 | |||
12 | |||
13 | |||
14 | Revision History |
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15 | |||
16 | --*/ |
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17 | |||
18 | #include "lib.h" |
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19 | #include "efistdarg.h" // !!! |
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20 | |||
21 | |||
22 | EFI_STATUS |
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23 | LibLocateProtocol ( |
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24 | IN EFI_GUID *ProtocolGuid, |
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25 | OUT VOID **Interface |
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26 | ) |
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27 | // |
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28 | // Find the first instance of this Protocol in the system and return it's interface |
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29 | // |
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30 | { |
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31 | EFI_STATUS Status; |
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32 | UINTN NumberHandles, Index; |
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33 | EFI_HANDLE *Handles; |
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34 | |||
35 | |||
36 | *Interface = NULL; |
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37 | Status = LibLocateHandle (ByProtocol, ProtocolGuid, NULL, &NumberHandles, &Handles); |
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38 | if (EFI_ERROR(Status)) { |
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39 | DEBUG((D_INFO, "LibLocateProtocol: Handle not found\n")); |
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40 | return Status; |
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41 | } |
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42 | |||
43 | for (Index=0; Index < NumberHandles; Index++) { |
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44 | Status = BS->HandleProtocol (Handles[Index], ProtocolGuid, Interface); |
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45 | if (!EFI_ERROR(Status)) { |
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46 | break; |
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47 | } |
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48 | } |
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49 | |||
50 | if (Handles) { |
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51 | FreePool (Handles); |
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52 | } |
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53 | |||
54 | return Status; |
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55 | } |
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56 | |||
57 | EFI_STATUS |
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58 | LibLocateHandle ( |
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59 | IN EFI_LOCATE_SEARCH_TYPE SearchType, |
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60 | IN EFI_GUID *Protocol OPTIONAL, |
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61 | IN VOID *SearchKey OPTIONAL, |
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62 | IN OUT UINTN *NoHandles, |
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63 | OUT EFI_HANDLE **Buffer |
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64 | ) |
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65 | |||
66 | { |
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67 | EFI_STATUS Status; |
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68 | UINTN BufferSize; |
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69 | |||
70 | // |
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71 | // Initialize for GrowBuffer loop |
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72 | // |
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73 | |||
74 | Status = EFI_SUCCESS; |
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75 | *Buffer = NULL; |
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76 | BufferSize = 50 * sizeof(EFI_HANDLE); |
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77 | |||
78 | // |
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79 | // Call the real function |
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80 | // |
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81 | |||
82 | while (GrowBuffer (&Status, (VOID **) Buffer, BufferSize)) { |
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83 | |||
84 | Status = BS->LocateHandle ( |
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85 | SearchType, |
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86 | Protocol, |
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87 | SearchKey, |
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88 | &BufferSize, |
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89 | *Buffer |
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90 | ); |
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91 | |||
92 | } |
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93 | |||
94 | *NoHandles = BufferSize / sizeof (EFI_HANDLE); |
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95 | if (EFI_ERROR(Status)) { |
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96 | *NoHandles = 0; |
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97 | } |
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98 | |||
99 | return Status; |
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100 | } |
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101 | |||
102 | EFI_STATUS |
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103 | LibLocateHandleByDiskSignature ( |
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104 | IN UINT8 MBRType, |
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105 | IN UINT8 SignatureType, |
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106 | IN VOID *Signature, |
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107 | IN OUT UINTN *NoHandles, |
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108 | OUT EFI_HANDLE **Buffer |
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109 | ) |
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110 | |||
111 | { |
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112 | EFI_STATUS Status; |
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113 | UINTN BufferSize; |
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114 | UINTN NoBlockIoHandles; |
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115 | EFI_HANDLE *BlockIoBuffer; |
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116 | EFI_DEVICE_PATH *DevicePath; |
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117 | UINTN Index; |
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118 | EFI_DEVICE_PATH *Start, *Next, *DevPath; |
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119 | HARDDRIVE_DEVICE_PATH *HardDriveDevicePath; |
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120 | BOOLEAN Match; |
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121 | BOOLEAN PreviousNodeIsHardDriveDevicePath; |
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122 | |||
123 | // |
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124 | // Initialize for GrowBuffer loop |
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125 | // |
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126 | |||
127 | BlockIoBuffer = NULL; |
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128 | BufferSize = 50 * sizeof(EFI_HANDLE); |
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129 | |||
130 | // |
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131 | // Call the real function |
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132 | // |
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133 | |||
134 | while (GrowBuffer (&Status, (VOID **)&BlockIoBuffer, BufferSize)) { |
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135 | |||
136 | // |
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137 | // Get list of device handles that support the BLOCK_IO Protocol. |
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138 | // |
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139 | |||
140 | Status = BS->LocateHandle ( |
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141 | ByProtocol, |
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142 | &BlockIoProtocol, |
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143 | NULL, |
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144 | &BufferSize, |
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145 | BlockIoBuffer |
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146 | ); |
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147 | |||
148 | } |
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149 | |||
150 | NoBlockIoHandles = BufferSize / sizeof (EFI_HANDLE); |
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151 | if (EFI_ERROR(Status)) { |
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152 | NoBlockIoHandles = 0; |
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153 | } |
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154 | |||
155 | // |
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156 | // If there was an error or there are no device handles that support |
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157 | // the BLOCK_IO Protocol, then return. |
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158 | // |
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159 | |||
160 | if (NoBlockIoHandles == 0) { |
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161 | FreePool(BlockIoBuffer); |
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162 | *NoHandles = 0; |
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163 | *Buffer = NULL; |
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164 | return Status; |
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165 | } |
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166 | |||
167 | // |
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168 | // Loop through all the device handles that support the BLOCK_IO Protocol |
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169 | // |
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170 | |||
171 | *NoHandles = 0; |
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172 | |||
173 | for(Index=0;Index<NoBlockIoHandles;Index++) { |
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174 | |||
175 | Status = BS->HandleProtocol (BlockIoBuffer[Index], |
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176 | &DevicePathProtocol, |
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177 | (VOID*)&DevicePath |
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178 | ); |
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179 | |||
180 | // |
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181 | // Search DevicePath for a Hard Drive Media Device Path node. |
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182 | // If one is found, then see if it matches the signature that was |
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183 | // passed in. If it does match, and the next node is the End of the |
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184 | // device path, and the previous node is not a Hard Drive Media Device |
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185 | // Path, then we have found a match. |
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186 | // |
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187 | |||
188 | Match = FALSE; |
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189 | |||
190 | if (DevicePath != NULL) { |
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191 | |||
192 | PreviousNodeIsHardDriveDevicePath = FALSE; |
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193 | |||
194 | DevPath = DevicePath; |
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195 | Start = DevPath; |
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196 | |||
197 | // |
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198 | // Check for end of device path type |
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199 | // |
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200 | |||
201 | for (; ;) { |
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202 | |||
203 | if ((DevicePathType(DevPath) == MEDIA_DEVICE_PATH) && |
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204 | (DevicePathSubType(DevPath) == MEDIA_HARDDRIVE_DP)) { |
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205 | |||
206 | HardDriveDevicePath = (HARDDRIVE_DEVICE_PATH *)(DevPath); |
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207 | |||
208 | if (PreviousNodeIsHardDriveDevicePath == FALSE) { |
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209 | |||
210 | Next = NextDevicePathNode(DevPath); |
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211 | if (IsDevicePathEndType(Next)) { |
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212 | if ((HardDriveDevicePath->MBRType == MBRType) && |
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213 | (HardDriveDevicePath->SignatureType == SignatureType)) { |
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214 | switch(SignatureType) { |
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215 | case SIGNATURE_TYPE_MBR: |
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216 | if (*((UINT32 *)(Signature)) == *(UINT32 *)(&(HardDriveDevicePath->Signature[0]))) { |
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217 | Match = TRUE; |
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218 | } |
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219 | break; |
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220 | case SIGNATURE_TYPE_GUID: |
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221 | if (CompareGuid((EFI_GUID *)Signature,(EFI_GUID *)(&(HardDriveDevicePath->Signature[0]))) == 0) { |
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222 | Match = TRUE; |
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223 | } |
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224 | break; |
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225 | } |
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226 | } |
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227 | } |
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228 | } |
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229 | PreviousNodeIsHardDriveDevicePath = TRUE; |
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230 | } else { |
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231 | PreviousNodeIsHardDriveDevicePath = FALSE; |
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232 | } |
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233 | |||
234 | if (IsDevicePathEnd(DevPath)) { |
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235 | break; |
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236 | } |
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237 | |||
238 | DevPath = NextDevicePathNode(DevPath); |
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239 | } |
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240 | |||
241 | } |
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242 | |||
243 | if (Match == FALSE) { |
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244 | BlockIoBuffer[Index] = NULL; |
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245 | } else { |
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246 | *NoHandles = *NoHandles + 1; |
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247 | } |
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248 | } |
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249 | |||
250 | // |
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251 | // If there are no matches, then return |
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252 | // |
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253 | |||
254 | if (*NoHandles == 0) { |
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255 | FreePool(BlockIoBuffer); |
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256 | *NoHandles = 0; |
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257 | *Buffer = NULL; |
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258 | return EFI_SUCCESS; |
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259 | } |
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260 | |||
261 | // |
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262 | // Allocate space for the return buffer of device handles. |
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263 | // |
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264 | |||
265 | *Buffer = AllocatePool(*NoHandles * sizeof(EFI_HANDLE)); |
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266 | |||
267 | if (*Buffer == NULL) { |
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268 | FreePool(BlockIoBuffer); |
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269 | *NoHandles = 0; |
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270 | *Buffer = NULL; |
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271 | return EFI_OUT_OF_RESOURCES; |
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272 | } |
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273 | |||
274 | // |
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275 | // Build list of matching device handles. |
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276 | // |
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277 | |||
278 | *NoHandles = 0; |
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279 | for(Index=0;Index<NoBlockIoHandles;Index++) { |
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280 | if (BlockIoBuffer[Index] != NULL) { |
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281 | (*Buffer)[*NoHandles] = BlockIoBuffer[Index]; |
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282 | *NoHandles = *NoHandles + 1; |
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283 | } |
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284 | } |
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285 | |||
286 | FreePool(BlockIoBuffer); |
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287 | |||
288 | return EFI_SUCCESS; |
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289 | } |
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290 | |||
291 | EFI_FILE_HANDLE |
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292 | LibOpenRoot ( |
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293 | IN EFI_HANDLE DeviceHandle |
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294 | ) |
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295 | { |
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296 | EFI_STATUS Status; |
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297 | EFI_FILE_IO_INTERFACE *Volume; |
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298 | EFI_FILE_HANDLE File; |
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299 | |||
300 | |||
301 | // |
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302 | // File the file system interface to the device |
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303 | // |
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304 | |||
305 | Status = BS->HandleProtocol (DeviceHandle, &FileSystemProtocol, (VOID*)&Volume); |
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306 | |||
307 | // |
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308 | // Open the root directory of the volume |
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309 | // |
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310 | |||
311 | if (!EFI_ERROR(Status)) { |
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312 | Status = Volume->OpenVolume(Volume, &File); |
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313 | } |
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314 | |||
315 | // |
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316 | // Done |
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317 | // |
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318 | |||
319 | return EFI_ERROR(Status) ? NULL : File; |
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320 | } |
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321 | |||
322 | EFI_FILE_INFO * |
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323 | LibFileInfo ( |
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324 | IN EFI_FILE_HANDLE FHand |
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325 | ) |
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326 | { |
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327 | EFI_STATUS Status; |
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328 | EFI_FILE_INFO *Buffer; |
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329 | UINTN BufferSize; |
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330 | |||
331 | // |
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332 | // Initialize for GrowBuffer loop |
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333 | // |
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334 | |||
335 | Buffer = NULL; |
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336 | BufferSize = SIZE_OF_EFI_FILE_INFO + 200; |
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337 | |||
338 | // |
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339 | // Call the real function |
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340 | // |
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341 | |||
342 | while (GrowBuffer (&Status, (VOID **) &Buffer, BufferSize)) { |
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343 | Status = FHand->GetInfo ( |
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344 | FHand, |
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345 | &GenericFileInfo, |
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346 | &BufferSize, |
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347 | Buffer |
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348 | ); |
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349 | } |
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350 | |||
351 | return Buffer; |
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352 | } |
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353 | |||
354 | |||
355 | EFI_FILE_SYSTEM_INFO * |
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356 | LibFileSystemInfo ( |
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357 | IN EFI_FILE_HANDLE FHand |
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358 | ) |
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359 | { |
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360 | EFI_STATUS Status; |
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361 | EFI_FILE_SYSTEM_INFO *Buffer; |
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362 | UINTN BufferSize; |
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363 | |||
364 | // |
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365 | // Initialize for GrowBuffer loop |
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366 | // |
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367 | |||
368 | Buffer = NULL; |
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369 | BufferSize = SIZE_OF_EFI_FILE_SYSTEM_INFO + 200; |
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370 | |||
371 | // |
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372 | // Call the real function |
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373 | // |
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374 | |||
375 | while (GrowBuffer (&Status, (VOID **) &Buffer, BufferSize)) { |
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376 | Status = FHand->GetInfo ( |
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377 | FHand, |
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378 | &FileSystemInfo, |
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379 | &BufferSize, |
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380 | Buffer |
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381 | ); |
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382 | } |
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383 | |||
384 | return Buffer; |
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385 | } |
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386 | |||
387 | EFI_FILE_SYSTEM_VOLUME_LABEL_INFO * |
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388 | LibFileSystemVolumeLabelInfo ( |
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389 | IN EFI_FILE_HANDLE FHand |
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390 | ) |
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391 | { |
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392 | EFI_STATUS Status; |
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393 | EFI_FILE_SYSTEM_VOLUME_LABEL_INFO *Buffer; |
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394 | UINTN BufferSize; |
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395 | |||
396 | // |
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397 | // Initialize for GrowBuffer loop |
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398 | // |
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399 | |||
400 | Buffer = NULL; |
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401 | BufferSize = SIZE_OF_EFI_FILE_SYSTEM_VOLUME_LABEL_INFO + 200; |
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402 | |||
403 | // |
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404 | // Call the real function |
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405 | // |
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406 | |||
407 | while (GrowBuffer (&Status, (VOID **) &Buffer, BufferSize)) { |
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408 | Status = FHand->GetInfo ( |
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409 | FHand, |
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410 | &FileSystemVolumeLabelInfo, |
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411 | &BufferSize, |
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412 | Buffer |
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413 | ); |
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414 | } |
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415 | |||
416 | return Buffer; |
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417 | } |
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418 | |||
419 | |||
420 | |||
421 | EFI_STATUS |
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422 | LibInstallProtocolInterfaces ( |
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423 | IN OUT EFI_HANDLE *Handle, |
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424 | ... |
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425 | ) |
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426 | { |
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427 | va_list args; |
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428 | EFI_STATUS Status; |
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429 | EFI_GUID *Protocol; |
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430 | VOID *Interface; |
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431 | EFI_TPL OldTpl; |
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432 | UINTN Index; |
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433 | EFI_HANDLE OldHandle; |
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434 | |||
435 | // |
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436 | // Syncronize with notifcations |
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437 | // |
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438 | |||
439 | OldTpl = BS->RaiseTPL(TPL_NOTIFY); |
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440 | OldHandle = *Handle; |
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441 | |||
442 | // |
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443 | // Install the protocol interfaces |
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444 | // |
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445 | |||
446 | Index = 0; |
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447 | Status = EFI_SUCCESS; |
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448 | va_start (args, Handle); |
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449 | |||
450 | while (!EFI_ERROR(Status)) { |
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451 | |||
452 | // |
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453 | // If protocol is NULL, then it's the end of the list |
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454 | // |
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455 | |||
456 | Protocol = va_arg(args, EFI_GUID *); |
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457 | if (!Protocol) { |
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458 | break; |
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459 | } |
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460 | |||
461 | Interface = va_arg(args, VOID *); |
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462 | |||
463 | // |
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464 | // Install it |
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465 | // |
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466 | |||
467 | DEBUG((D_INFO, "LibInstallProtocolInterface: %d %x\n", Protocol, Interface)); |
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468 | Status = BS->InstallProtocolInterface (Handle, Protocol, EFI_NATIVE_INTERFACE, Interface); |
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469 | if (EFI_ERROR(Status)) { |
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470 | break; |
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471 | } |
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472 | |||
473 | Index += 1; |
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474 | } |
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475 | |||
476 | // |
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477 | // If there was an error, remove all the interfaces that were |
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478 | // installed without any errors |
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479 | // |
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480 | |||
481 | if (EFI_ERROR(Status)) { |
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482 | va_start (args, Handle); |
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483 | while (Index) { |
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484 | |||
485 | Protocol = va_arg(args, EFI_GUID *); |
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486 | Interface = va_arg(args, VOID *); |
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487 | BS->UninstallProtocolInterface (*Handle, Protocol, Interface); |
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488 | |||
489 | Index -= 1; |
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490 | } |
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491 | |||
492 | *Handle = OldHandle; |
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493 | } |
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494 | |||
495 | // |
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496 | // Done |
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497 | // |
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498 | |||
499 | BS->RestoreTPL(OldTpl); |
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500 | return Status; |
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501 | } |
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502 | |||
503 | |||
504 | VOID |
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505 | LibUninstallProtocolInterfaces ( |
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506 | IN EFI_HANDLE Handle, |
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507 | ... |
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508 | ) |
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509 | { |
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510 | va_list args; |
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511 | EFI_STATUS Status; |
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512 | EFI_GUID *Protocol; |
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513 | VOID *Interface; |
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514 | |||
515 | |||
516 | va_start (args, Handle); |
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517 | for (; ;) { |
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518 | |||
519 | // |
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520 | // If protocol is NULL, then it's the end of the list |
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521 | // |
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522 | |||
523 | Protocol = va_arg(args, EFI_GUID *); |
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524 | if (!Protocol) { |
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525 | break; |
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526 | } |
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527 | |||
528 | Interface = va_arg(args, VOID *); |
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529 | |||
530 | // |
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531 | // Uninstall it |
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532 | // |
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533 | |||
534 | Status = BS->UninstallProtocolInterface (Handle, Protocol, Interface); |
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535 | if (EFI_ERROR(Status)) { |
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536 | DEBUG((D_ERROR, "LibUninstallProtocolInterfaces: failed %g, %r\n", Protocol, Handle)); |
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537 | } |
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538 | } |
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539 | } |
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540 | |||
541 | |||
542 | EFI_STATUS |
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543 | LibReinstallProtocolInterfaces ( |
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544 | IN OUT EFI_HANDLE *Handle, |
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545 | ... |
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546 | ) |
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547 | { |
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548 | va_list args; |
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549 | EFI_STATUS Status; |
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550 | EFI_GUID *Protocol; |
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551 | VOID *OldInterface, *NewInterface; |
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552 | EFI_TPL OldTpl; |
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553 | UINTN Index; |
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554 | |||
555 | // |
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556 | // Syncronize with notifcations |
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557 | // |
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558 | |||
559 | OldTpl = BS->RaiseTPL(TPL_NOTIFY); |
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560 | |||
561 | // |
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562 | // Install the protocol interfaces |
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563 | // |
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564 | |||
565 | Index = 0; |
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566 | Status = EFI_SUCCESS; |
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567 | va_start (args, Handle); |
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568 | |||
569 | while (!EFI_ERROR(Status)) { |
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570 | |||
571 | // |
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572 | // If protocol is NULL, then it's the end of the list |
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573 | // |
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574 | |||
575 | Protocol = va_arg(args, EFI_GUID *); |
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576 | if (!Protocol) { |
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577 | break; |
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578 | } |
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579 | |||
580 | OldInterface = va_arg(args, VOID *); |
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581 | NewInterface = va_arg(args, VOID *); |
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582 | |||
583 | // |
||
584 | // Reinstall it |
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585 | // |
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586 | |||
587 | Status = BS->ReinstallProtocolInterface (Handle, Protocol, OldInterface, NewInterface); |
||
588 | if (EFI_ERROR(Status)) { |
||
589 | break; |
||
590 | } |
||
591 | |||
592 | Index += 1; |
||
593 | } |
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594 | |||
595 | // |
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596 | // If there was an error, undo all the interfaces that were |
||
597 | // reinstalled without any errors |
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598 | // |
||
599 | |||
600 | if (EFI_ERROR(Status)) { |
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601 | va_start (args, Handle); |
||
602 | while (Index) { |
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603 | |||
604 | Protocol = va_arg(args, EFI_GUID *); |
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605 | OldInterface = va_arg(args, VOID *); |
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606 | NewInterface = va_arg(args, VOID *); |
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607 | |||
608 | BS->ReinstallProtocolInterface (Handle, Protocol, NewInterface, OldInterface); |
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609 | |||
610 | Index -= 1; |
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611 | } |
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612 | } |
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613 | |||
614 | // |
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615 | // Done |
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616 | // |
||
617 | |||
618 | BS->RestoreTPL(OldTpl); |
||
619 | return Status; |
||
620 | } |