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1 | /*++\r | |
2 | \r | |
3 | Copyright (c) 2005 - 2007, Intel Corporation \r | |
4 | All rights reserved. This program and the accompanying materials \r | |
5 | are licensed and made available under the terms and conditions of the BSD License \r | |
6 | which accompanies this distribution. The full text of the license may be found at \r | |
7 | http://opensource.org/licenses/bsd-license.php \r | |
8 | \r | |
9 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r | |
10 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r | |
11 | \r | |
12 | Module Name:\r | |
13 | \r | |
14 | PciDriverOverride.c\r | |
15 | \r | |
16 | Abstract:\r | |
17 | \r | |
18 | PCI Bus Driver\r | |
19 | \r | |
20 | Revision History\r | |
21 | \r | |
22 | --*/\r | |
23 | \r | |
24 | #include "PciBus.h"\r | |
25 | \r | |
26 | EFI_STATUS\r | |
27 | EFIAPI\r | |
28 | GetDriver(\r | |
29 | IN struct _EFI_BUS_SPECIFIC_DRIVER_OVERRIDE_PROTOCOL *This,\r | |
30 | IN OUT EFI_HANDLE *DriverImageHandle\r | |
31 | );\r | |
32 | \r | |
33 | \r | |
34 | \r | |
35 | EFI_STATUS\r | |
36 | InitializePciDriverOverrideInstance (\r | |
37 | PCI_IO_DEVICE *PciIoDevice\r | |
38 | )\r | |
39 | /*++\r | |
40 | \r | |
41 | Routine Description:\r | |
42 | \r | |
43 | Initializes a PCI Driver Override Instance\r | |
44 | \r | |
45 | Arguments:\r | |
46 | \r | |
47 | Returns:\r | |
48 | \r | |
49 | None\r | |
50 | \r | |
51 | --*/\r | |
52 | \r | |
53 | {\r | |
54 | PciIoDevice->PciDriverOverride.GetDriver = GetDriver;\r | |
55 | return EFI_SUCCESS;\r | |
56 | }\r | |
57 | \r | |
58 | EFI_STATUS\r | |
59 | EFIAPI\r | |
60 | GetDriver (\r | |
61 | IN EFI_BUS_SPECIFIC_DRIVER_OVERRIDE_PROTOCOL *This,\r | |
62 | IN OUT EFI_HANDLE *DriverImageHandle\r | |
63 | )\r | |
64 | /*++\r | |
65 | \r | |
66 | Routine Description:\r | |
67 | \r | |
68 | Get a overriding driver image\r | |
69 | \r | |
70 | Arguments:\r | |
71 | \r | |
72 | Returns:\r | |
73 | \r | |
74 | None\r | |
75 | \r | |
76 | --*/\r | |
77 | {\r | |
78 | PCI_IO_DEVICE *PciIoDevice;\r | |
79 | LIST_ENTRY *CurrentLink;\r | |
80 | PCI_DRIVER_OVERRIDE_LIST *Node;\r | |
81 | \r | |
82 | PciIoDevice = PCI_IO_DEVICE_FROM_PCI_DRIVER_OVERRIDE_THIS (This);\r | |
83 | \r | |
84 | CurrentLink = PciIoDevice->OptionRomDriverList.ForwardLink;\r | |
85 | \r | |
86 | while (CurrentLink && CurrentLink != &PciIoDevice->OptionRomDriverList) {\r | |
87 | \r | |
88 | Node = DRIVER_OVERRIDE_FROM_LINK (CurrentLink);\r | |
89 | \r | |
90 | if (*DriverImageHandle == NULL) {\r | |
91 | \r | |
92 | *DriverImageHandle = Node->DriverImageHandle;\r | |
93 | return EFI_SUCCESS;\r | |
94 | }\r | |
95 | \r | |
96 | if (*DriverImageHandle == Node->DriverImageHandle) {\r | |
97 | \r | |
98 | if (CurrentLink->ForwardLink == &PciIoDevice->OptionRomDriverList ||\r | |
99 | CurrentLink->ForwardLink == NULL) {\r | |
100 | return EFI_NOT_FOUND;\r | |
101 | }\r | |
102 | \r | |
103 | //\r | |
104 | // Get next node\r | |
105 | //\r | |
106 | Node = DRIVER_OVERRIDE_FROM_LINK (CurrentLink->ForwardLink);\r | |
107 | *DriverImageHandle = Node->DriverImageHandle;\r | |
108 | return EFI_SUCCESS;\r | |
109 | }\r | |
110 | \r | |
111 | CurrentLink = CurrentLink->ForwardLink;\r | |
112 | }\r | |
113 | \r | |
114 | return EFI_INVALID_PARAMETER;\r | |
115 | }\r | |
116 | \r | |
117 | EFI_STATUS\r | |
118 | AddDriver (\r | |
119 | IN PCI_IO_DEVICE *PciIoDevice,\r | |
120 | IN EFI_HANDLE DriverImageHandle\r | |
121 | )\r | |
122 | /*++\r | |
123 | \r | |
124 | Routine Description:\r | |
125 | \r | |
126 | Add a overriding driver image\r | |
127 | \r | |
128 | Arguments:\r | |
129 | \r | |
130 | Returns:\r | |
131 | \r | |
132 | None\r | |
133 | \r | |
134 | --*/\r | |
135 | \r | |
136 | {\r | |
137 | EFI_STATUS Status;\r | |
138 | EFI_IMAGE_DOS_HEADER *DosHdr;\r | |
139 | EFI_IMAGE_NT_HEADERS *PeHdr;\r | |
140 | EFI_LOADED_IMAGE_PROTOCOL *LoadedImage;\r | |
141 | PCI_DRIVER_OVERRIDE_LIST *Node;\r | |
142 | #if (EFI_SPECIFICATION_VERSION < 0x00020000)\r | |
143 | EFI_DRIVER_OS_HANDOFF_HEADER *DriverOsHandoffHeader;\r | |
144 | EFI_DRIVER_OS_HANDOFF_HEADER *NewDriverOsHandoffHeader;\r | |
145 | EFI_DRIVER_OS_HANDOFF *DriverOsHandoff;\r | |
146 | EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r | |
147 | EFI_HANDLE DeviceHandle;\r | |
148 | UINTN NumberOfEntries;\r | |
149 | UINTN Size;\r | |
150 | UINTN Index;\r | |
151 | #endif\r | |
152 | \r | |
153 | Status = gBS->HandleProtocol (DriverImageHandle, &gEfiLoadedImageProtocolGuid, (VOID **) &LoadedImage);\r | |
154 | if (EFI_ERROR (Status)) {\r | |
155 | return Status;\r | |
156 | }\r | |
157 | \r | |
158 | Node = AllocatePool (sizeof (PCI_DRIVER_OVERRIDE_LIST));\r | |
159 | if (Node == NULL) {\r | |
160 | return EFI_OUT_OF_RESOURCES;\r | |
161 | }\r | |
162 | \r | |
163 | Node->Signature = DRIVER_OVERRIDE_SIGNATURE;\r | |
164 | Node->DriverImageHandle = DriverImageHandle;\r | |
165 | \r | |
166 | InsertTailList (&PciIoDevice->OptionRomDriverList, &(Node->Link));\r | |
167 | \r | |
168 | PciIoDevice->BusOverride = TRUE;\r | |
169 | \r | |
170 | DosHdr = (EFI_IMAGE_DOS_HEADER *) LoadedImage->ImageBase;\r | |
171 | if (DosHdr->e_magic != EFI_IMAGE_DOS_SIGNATURE) {\r | |
172 | return EFI_SUCCESS;\r | |
173 | }\r | |
174 | \r | |
175 | PeHdr = (EFI_IMAGE_NT_HEADERS *) ((UINTN) LoadedImage->ImageBase + DosHdr->e_lfanew);\r | |
176 | \r | |
177 | if (PeHdr->FileHeader.Machine != EFI_IMAGE_MACHINE_EBC) {\r | |
178 | return EFI_SUCCESS;\r | |
179 | }\r | |
180 | \r | |
181 | #if (EFI_SPECIFICATION_VERSION < 0x00020000)\r | |
182 | DriverOsHandoffHeader = NULL;\r | |
183 | Status = EfiLibGetSystemConfigurationTable (&gEfiUgaIoProtocolGuid, (VOID **) &DriverOsHandoffHeader);\r | |
184 | if (!EFI_ERROR (Status) && DriverOsHandoffHeader != NULL) {\r | |
185 | for (Index = 0; Index < DriverOsHandoffHeader->NumberOfEntries; Index++) {\r | |
186 | DriverOsHandoff = (EFI_DRIVER_OS_HANDOFF *)((UINTN)(DriverOsHandoffHeader) + \r | |
187 | DriverOsHandoffHeader->HeaderSize + \r | |
188 | Index * DriverOsHandoffHeader->SizeOfEntries);\r | |
189 | DevicePath = DriverOsHandoff->DevicePath;\r | |
190 | Status = gBS->LocateDevicePath (&gEfiDevicePathProtocolGuid, &DevicePath, &DeviceHandle);\r | |
191 | if (!EFI_ERROR (Status) && DeviceHandle != NULL && IsDevicePathEnd (DevicePath)) {\r | |
192 | if (DeviceHandle == PciIoDevice->Handle) {\r | |
193 | return EFI_SUCCESS;\r | |
194 | }\r | |
195 | }\r | |
196 | }\r | |
197 | \r | |
198 | NumberOfEntries = DriverOsHandoffHeader->NumberOfEntries + 1;\r | |
199 | } else {\r | |
200 | NumberOfEntries = 1;\r | |
201 | }\r | |
202 | \r | |
203 | Status = gBS->AllocatePool (\r | |
204 | EfiRuntimeServicesData,\r | |
205 | sizeof (EFI_DRIVER_OS_HANDOFF_HEADER) + NumberOfEntries * sizeof (EFI_DRIVER_OS_HANDOFF),\r | |
206 | (VOID **) &NewDriverOsHandoffHeader\r | |
207 | );\r | |
208 | if (EFI_ERROR (Status)) {\r | |
209 | return Status;\r | |
210 | }\r | |
211 | \r | |
212 | if (DriverOsHandoffHeader == NULL) {\r | |
213 | NewDriverOsHandoffHeader->Version = 0;\r | |
214 | NewDriverOsHandoffHeader->HeaderSize = sizeof (EFI_DRIVER_OS_HANDOFF_HEADER);\r | |
215 | NewDriverOsHandoffHeader->SizeOfEntries = sizeof (EFI_DRIVER_OS_HANDOFF);\r | |
216 | NewDriverOsHandoffHeader->NumberOfEntries = (UINT32) NumberOfEntries;\r | |
217 | } else {\r | |
218 | gBS->CopyMem (\r | |
219 | NewDriverOsHandoffHeader,\r | |
220 | DriverOsHandoffHeader,\r | |
221 | DriverOsHandoffHeader->HeaderSize + (NumberOfEntries - 1) * DriverOsHandoffHeader->SizeOfEntries\r | |
222 | );\r | |
223 | NewDriverOsHandoffHeader->NumberOfEntries = (UINT32) NumberOfEntries;\r | |
224 | }\r | |
225 | \r | |
226 | DriverOsHandoff = (EFI_DRIVER_OS_HANDOFF *)((UINTN)NewDriverOsHandoffHeader + \r | |
227 | NewDriverOsHandoffHeader->HeaderSize + \r | |
228 | (NumberOfEntries - 1) * NewDriverOsHandoffHeader->SizeOfEntries);\r | |
229 | \r | |
230 | //\r | |
231 | // Fill in the EFI_DRIVER_OS_HANDOFF structure\r | |
232 | //\r | |
233 | DriverOsHandoff->Type = EfiUgaDriverFromPciRom;\r | |
234 | \r | |
235 | //\r | |
236 | // Compute the size of the device path\r | |
237 | //\r | |
238 | Size = EfiDevicePathSize (PciIoDevice->DevicePath);\r | |
239 | if (Size == 0) {\r | |
240 | DriverOsHandoff->DevicePath = NULL;\r | |
241 | } else {\r | |
242 | \r | |
243 | //\r | |
244 | // Allocate space for duplicate device path\r | |
245 | //\r | |
246 | Status = gBS->AllocatePool (\r | |
247 | EfiRuntimeServicesData,\r | |
248 | Size,\r | |
249 | (VOID **) &DriverOsHandoff->DevicePath\r | |
250 | );\r | |
251 | if (EFI_ERROR (Status)) {\r | |
252 | gBS->FreePool (NewDriverOsHandoffHeader);\r | |
253 | return Status;\r | |
254 | }\r | |
255 | \r | |
256 | //\r | |
257 | // Make copy of device path\r | |
258 | //\r | |
259 | CopyMem (DriverOsHandoff->DevicePath, PciIoDevice->DevicePath, Size);\r | |
260 | }\r | |
261 | \r | |
262 | DriverOsHandoff->PciRomSize = (UINT64) PciIoDevice->PciIo.RomSize;\r | |
263 | Status = gBS->AllocatePool (\r | |
264 | EfiRuntimeServicesData,\r | |
265 | (UINTN) DriverOsHandoff->PciRomSize,\r | |
266 | (VOID **) &DriverOsHandoff->PciRomImage\r | |
267 | );\r | |
268 | if (EFI_ERROR (Status)) {\r | |
269 | gBS->FreePool (NewDriverOsHandoffHeader);\r | |
270 | return Status;\r | |
271 | }\r | |
272 | \r | |
273 | gBS->CopyMem (\r | |
274 | DriverOsHandoff->PciRomImage,\r | |
275 | PciIoDevice->PciIo.RomImage,\r | |
276 | (UINTN) DriverOsHandoff->PciRomSize\r | |
277 | );\r | |
278 | \r | |
279 | Status = gBS->InstallConfigurationTable (&gEfiUgaIoProtocolGuid, NewDriverOsHandoffHeader);\r | |
280 | if (EFI_ERROR (Status)) {\r | |
281 | return Status;\r | |
282 | }\r | |
283 | \r | |
284 | if (DriverOsHandoffHeader != NULL) {\r | |
285 | gBS->FreePool (DriverOsHandoffHeader);\r | |
286 | }\r | |
287 | #endif\r | |
288 | \r | |
289 | return EFI_SUCCESS;\r | |
290 | }\r |