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1 | /** @file\r | |
2 | Driver Binding functions implementation for UEFI HTTP boot.\r | |
3 | \r | |
4 | Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>\r | |
5 | This program and the accompanying materials are licensed and made available under \r | |
6 | the terms and conditions of the BSD License that accompanies this distribution. \r | |
7 | The full text of the license may be found at\r | |
8 | http://opensource.org/licenses/bsd-license.php. \r | |
9 | \r | |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r | |
12 | \r | |
13 | **/\r | |
14 | \r | |
15 | #include "HttpBootDxe.h"\r | |
16 | \r | |
17 | ///\r | |
18 | /// Driver Binding Protocol instance\r | |
19 | ///\r | |
20 | EFI_DRIVER_BINDING_PROTOCOL gHttpBootIp4DxeDriverBinding = {\r | |
21 | HttpBootIp4DxeDriverBindingSupported,\r | |
22 | HttpBootIp4DxeDriverBindingStart,\r | |
23 | HttpBootIp4DxeDriverBindingStop,\r | |
24 | HTTP_BOOT_DXE_VERSION,\r | |
25 | NULL,\r | |
26 | NULL\r | |
27 | };\r | |
28 | \r | |
29 | /**\r | |
30 | Destroy the HTTP child based on IPv4 stack.\r | |
31 | \r | |
32 | @param[in] This Pointer to the EFI_DRIVER_BINDING_PROTOCOL.\r | |
33 | @param[in] Private Pointer to HTTP_BOOT_PRIVATE_DATA.\r | |
34 | \r | |
35 | **/\r | |
36 | VOID\r | |
37 | HttpBootDestroyIp4Children (\r | |
38 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
39 | IN HTTP_BOOT_PRIVATE_DATA *Private\r | |
40 | )\r | |
41 | {\r | |
42 | ASSERT (This != NULL);\r | |
43 | ASSERT (Private != NULL);\r | |
44 | ASSERT (Private->UsingIpv6 == FALSE);\r | |
45 | \r | |
46 | if (Private->Dhcp4Child != NULL) {\r | |
47 | gBS->CloseProtocol (\r | |
48 | Private->Dhcp4Child,\r | |
49 | &gEfiDhcp4ProtocolGuid,\r | |
50 | This->DriverBindingHandle,\r | |
51 | Private->Controller\r | |
52 | );\r | |
53 | \r | |
54 | NetLibDestroyServiceChild (\r | |
55 | Private->Controller,\r | |
56 | This->DriverBindingHandle,\r | |
57 | &gEfiDhcp4ServiceBindingProtocolGuid,\r | |
58 | Private->Dhcp4Child\r | |
59 | );\r | |
60 | }\r | |
61 | \r | |
62 | if (Private->HttpCreated) {\r | |
63 | HttpIoDestroyIo (&Private->HttpIo);\r | |
64 | Private->HttpCreated = FALSE;\r | |
65 | }\r | |
66 | \r | |
67 | gBS->CloseProtocol (\r | |
68 | Private->Controller,\r | |
69 | &gEfiCallerIdGuid,\r | |
70 | This->DriverBindingHandle,\r | |
71 | Private->ChildHandle\r | |
72 | );\r | |
73 | \r | |
74 | gBS->UninstallMultipleProtocolInterfaces (\r | |
75 | Private->ChildHandle,\r | |
76 | &gEfiLoadFileProtocolGuid,\r | |
77 | &Private->LoadFile,\r | |
78 | &gEfiDevicePathProtocolGuid,\r | |
79 | Private->DevicePath,\r | |
80 | NULL\r | |
81 | );\r | |
82 | \r | |
83 | if (Private->DevicePath != NULL) {\r | |
84 | FreePool (Private->DevicePath);\r | |
85 | Private->DevicePath = NULL;\r | |
86 | }\r | |
87 | }\r | |
88 | \r | |
89 | /**\r | |
90 | Tests to see if this driver supports a given controller. If a child device is provided, \r | |
91 | it further tests to see if this driver supports creating a handle for the specified child device.\r | |
92 | \r | |
93 | This function checks to see if the driver specified by This supports the device specified by \r | |
94 | ControllerHandle. Drivers will typically use the device path attached to \r | |
95 | ControllerHandle and/or the services from the bus I/O abstraction attached to \r | |
96 | ControllerHandle to determine if the driver supports ControllerHandle. This function \r | |
97 | may be called many times during platform initialization. In order to reduce boot times, the tests \r | |
98 | performed by this function must be very small, and take as little time as possible to execute. This \r | |
99 | function must not change the state of any hardware devices, and this function must be aware that the \r | |
100 | device specified by ControllerHandle may already be managed by the same driver or a \r | |
101 | different driver. This function must match its calls to AllocatePages() with FreePages(), \r | |
102 | AllocatePool() with FreePool(), and OpenProtocol() with CloseProtocol(). \r | |
103 | Because ControllerHandle may have been previously started by the same driver, if a protocol is \r | |
104 | already in the opened state, then it must not be closed with CloseProtocol(). This is required \r | |
105 | to guarantee the state of ControllerHandle is not modified by this function.\r | |
106 | \r | |
107 | @param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.\r | |
108 | @param[in] ControllerHandle The handle of the controller to test. This handle \r | |
109 | must support a protocol interface that supplies \r | |
110 | an I/O abstraction to the driver.\r | |
111 | @param[in] RemainingDevicePath A pointer to the remaining portion of a device path. This \r | |
112 | parameter is ignored by device drivers, and is optional for bus \r | |
113 | drivers. For bus drivers, if this parameter is not NULL, then \r | |
114 | the bus driver must determine if the bus controller specified \r | |
115 | by ControllerHandle and the child controller specified \r | |
116 | by RemainingDevicePath are both supported by this \r | |
117 | bus driver.\r | |
118 | \r | |
119 | @retval EFI_SUCCESS The device specified by ControllerHandle and\r | |
120 | RemainingDevicePath is supported by the driver specified by This.\r | |
121 | @retval EFI_ALREADY_STARTED The device specified by ControllerHandle and\r | |
122 | RemainingDevicePath is already being managed by the driver\r | |
123 | specified by This.\r | |
124 | @retval EFI_ACCESS_DENIED The device specified by ControllerHandle and\r | |
125 | RemainingDevicePath is already being managed by a different\r | |
126 | driver or an application that requires exclusive access.\r | |
127 | Currently not implemented.\r | |
128 | @retval EFI_UNSUPPORTED The device specified by ControllerHandle and\r | |
129 | RemainingDevicePath is not supported by the driver specified by This.\r | |
130 | **/\r | |
131 | EFI_STATUS\r | |
132 | EFIAPI\r | |
133 | HttpBootIp4DxeDriverBindingSupported (\r | |
134 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
135 | IN EFI_HANDLE ControllerHandle,\r | |
136 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL\r | |
137 | )\r | |
138 | {\r | |
139 | EFI_STATUS Status;\r | |
140 | \r | |
141 | //\r | |
142 | // Try to open the DHCP4, HTTP4 and Device Path protocol.\r | |
143 | //\r | |
144 | Status = gBS->OpenProtocol (\r | |
145 | ControllerHandle,\r | |
146 | &gEfiDhcp4ServiceBindingProtocolGuid,\r | |
147 | NULL,\r | |
148 | This->DriverBindingHandle,\r | |
149 | ControllerHandle,\r | |
150 | EFI_OPEN_PROTOCOL_TEST_PROTOCOL\r | |
151 | );\r | |
152 | if (EFI_ERROR (Status)) {\r | |
153 | return Status;\r | |
154 | }\r | |
155 | \r | |
156 | Status = gBS->OpenProtocol (\r | |
157 | ControllerHandle,\r | |
158 | &gEfiHttpServiceBindingProtocolGuid,\r | |
159 | NULL,\r | |
160 | This->DriverBindingHandle,\r | |
161 | ControllerHandle,\r | |
162 | EFI_OPEN_PROTOCOL_TEST_PROTOCOL\r | |
163 | );\r | |
164 | if (EFI_ERROR (Status)) {\r | |
165 | return Status;\r | |
166 | }\r | |
167 | \r | |
168 | Status = gBS->OpenProtocol (\r | |
169 | ControllerHandle,\r | |
170 | &gEfiDevicePathProtocolGuid,\r | |
171 | NULL,\r | |
172 | This->DriverBindingHandle,\r | |
173 | ControllerHandle,\r | |
174 | EFI_OPEN_PROTOCOL_TEST_PROTOCOL\r | |
175 | );\r | |
176 | \r | |
177 | return Status;\r | |
178 | }\r | |
179 | \r | |
180 | \r | |
181 | /**\r | |
182 | Starts a device controller or a bus controller.\r | |
183 | \r | |
184 | The Start() function is designed to be invoked from the EFI boot service ConnectController().\r | |
185 | As a result, much of the error checking on the parameters to Start() has been moved into this \r | |
186 | common boot service. It is legal to call Start() from other locations, \r | |
187 | but the following calling restrictions must be followed, or the system behavior will not be deterministic.\r | |
188 | 1. ControllerHandle must be a valid EFI_HANDLE.\r | |
189 | 2. If RemainingDevicePath is not NULL, then it must be a pointer to a naturally aligned\r | |
190 | EFI_DEVICE_PATH_PROTOCOL.\r | |
191 | 3. Prior to calling Start(), the Supported() function for the driver specified by This must\r | |
192 | have been called with the same calling parameters, and Supported() must have returned EFI_SUCCESS. \r | |
193 | \r | |
194 | @param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.\r | |
195 | @param[in] ControllerHandle The handle of the controller to start. This handle \r | |
196 | must support a protocol interface that supplies \r | |
197 | an I/O abstraction to the driver.\r | |
198 | @param[in] RemainingDevicePath A pointer to the remaining portion of a device path. This \r | |
199 | parameter is ignored by device drivers, and is optional for bus \r | |
200 | drivers. For a bus driver, if this parameter is NULL, then handles \r | |
201 | for all the children of Controller are created by this driver. \r | |
202 | If this parameter is not NULL and the first Device Path Node is \r | |
203 | not the End of Device Path Node, then only the handle for the \r | |
204 | child device specified by the first Device Path Node of \r | |
205 | RemainingDevicePath is created by this driver.\r | |
206 | If the first Device Path Node of RemainingDevicePath is \r | |
207 | the End of Device Path Node, no child handle is created by this\r | |
208 | driver.\r | |
209 | \r | |
210 | @retval EFI_SUCCESS The device was started.\r | |
211 | @retval EFI_DEVICE_ERROR The device could not be started due to a device error.Currently not implemented.\r | |
212 | @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.\r | |
213 | @retval Others The driver failded to start the device.\r | |
214 | \r | |
215 | **/\r | |
216 | EFI_STATUS\r | |
217 | EFIAPI\r | |
218 | HttpBootIp4DxeDriverBindingStart (\r | |
219 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
220 | IN EFI_HANDLE ControllerHandle,\r | |
221 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL\r | |
222 | )\r | |
223 | {\r | |
224 | EFI_STATUS Status;\r | |
225 | HTTP_BOOT_PRIVATE_DATA *Private;\r | |
226 | EFI_DEV_PATH *Node;\r | |
227 | EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r | |
228 | UINT32 *Id;\r | |
229 | \r | |
230 | Status = gBS->OpenProtocol (\r | |
231 | ControllerHandle,\r | |
232 | &gEfiCallerIdGuid,\r | |
233 | (VOID **) &Id,\r | |
234 | This->DriverBindingHandle,\r | |
235 | ControllerHandle,\r | |
236 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
237 | );\r | |
238 | if (!EFI_ERROR (Status)) {\r | |
239 | return EFI_ALREADY_STARTED;\r | |
240 | }\r | |
241 | \r | |
242 | //\r | |
243 | // Initialize the private data structure.\r | |
244 | //\r | |
245 | Private = AllocateZeroPool (sizeof (HTTP_BOOT_PRIVATE_DATA));\r | |
246 | if (Private == NULL) {\r | |
247 | return EFI_OUT_OF_RESOURCES;\r | |
248 | }\r | |
249 | Private->Signature = HTTP_BOOT_PRIVATE_DATA_SIGNATURE;\r | |
250 | Private->Controller = ControllerHandle;\r | |
251 | Private->Image = This->ImageHandle;\r | |
252 | Private->UsingIpv6 = FALSE;\r | |
253 | InitializeListHead (&Private->CacheList);\r | |
254 | \r | |
255 | //\r | |
256 | // Create DHCP child instance.\r | |
257 | //\r | |
258 | Status = NetLibCreateServiceChild (\r | |
259 | ControllerHandle,\r | |
260 | This->DriverBindingHandle,\r | |
261 | &gEfiDhcp4ServiceBindingProtocolGuid,\r | |
262 | &Private->Dhcp4Child\r | |
263 | );\r | |
264 | if (EFI_ERROR (Status)) {\r | |
265 | goto ON_ERROR;\r | |
266 | }\r | |
267 | \r | |
268 | Status = gBS->OpenProtocol (\r | |
269 | Private->Dhcp4Child,\r | |
270 | &gEfiDhcp4ProtocolGuid,\r | |
271 | (VOID **) &Private->Dhcp4,\r | |
272 | This->DriverBindingHandle,\r | |
273 | ControllerHandle,\r | |
274 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
275 | );\r | |
276 | if (EFI_ERROR (Status)) {\r | |
277 | goto ON_ERROR;\r | |
278 | }\r | |
279 | \r | |
280 | //\r | |
281 | // Get the Ip4Config2 protocol, it's required to configure the default gateway address.\r | |
282 | //\r | |
283 | Status = gBS->OpenProtocol (\r | |
284 | ControllerHandle,\r | |
285 | &gEfiIp4Config2ProtocolGuid,\r | |
286 | (VOID **) &Private->Ip4Config2,\r | |
287 | This->DriverBindingHandle,\r | |
288 | ControllerHandle,\r | |
289 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
290 | );\r | |
291 | if (EFI_ERROR (Status)) {\r | |
292 | goto ON_ERROR;\r | |
293 | }\r | |
294 | \r | |
295 | //\r | |
296 | // Get the NII interface if it exists, it's not required.\r | |
297 | //\r | |
298 | Status = gBS->OpenProtocol (\r | |
299 | ControllerHandle,\r | |
300 | &gEfiNetworkInterfaceIdentifierProtocolGuid_31,\r | |
301 | (VOID **) &Private->Nii,\r | |
302 | This->DriverBindingHandle,\r | |
303 | ControllerHandle,\r | |
304 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
305 | );\r | |
306 | if (EFI_ERROR (Status)) {\r | |
307 | Private->Nii = NULL;\r | |
308 | }\r | |
309 | \r | |
310 | //\r | |
311 | // Open Device Path Protocol to prepare for appending IP and URI node.\r | |
312 | //\r | |
313 | Status = gBS->OpenProtocol (\r | |
314 | ControllerHandle,\r | |
315 | &gEfiDevicePathProtocolGuid,\r | |
316 | (VOID **) &Private->ParentDevicePath,\r | |
317 | This->DriverBindingHandle,\r | |
318 | ControllerHandle,\r | |
319 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
320 | );\r | |
321 | if (EFI_ERROR (Status)) {\r | |
322 | goto ON_ERROR;\r | |
323 | }\r | |
324 | \r | |
325 | //\r | |
326 | // Append IPv4 device path node.\r | |
327 | //\r | |
328 | Node = AllocateZeroPool (sizeof (IPv4_DEVICE_PATH));\r | |
329 | if (Node == NULL) {\r | |
330 | Status = EFI_OUT_OF_RESOURCES;\r | |
331 | goto ON_ERROR;\r | |
332 | }\r | |
333 | Node->Ipv4.Header.Type = MESSAGING_DEVICE_PATH;\r | |
334 | Node->Ipv4.Header.SubType = MSG_IPv4_DP;\r | |
335 | SetDevicePathNodeLength (Node, sizeof (IPv4_DEVICE_PATH));\r | |
336 | Node->Ipv4.StaticIpAddress = FALSE;\r | |
337 | DevicePath = AppendDevicePathNode (Private->ParentDevicePath, (EFI_DEVICE_PATH_PROTOCOL*) Node);\r | |
338 | FreePool (Node);\r | |
339 | if (DevicePath == NULL) {\r | |
340 | Status = EFI_OUT_OF_RESOURCES;\r | |
341 | goto ON_ERROR;\r | |
342 | }\r | |
343 | \r | |
344 | //\r | |
345 | // Append URI device path node.\r | |
346 | //\r | |
347 | Node = AllocateZeroPool (sizeof (EFI_DEVICE_PATH_PROTOCOL));\r | |
348 | if (Node == NULL) {\r | |
349 | Status = EFI_OUT_OF_RESOURCES;\r | |
350 | goto ON_ERROR;\r | |
351 | }\r | |
352 | Node->DevPath.Type = MESSAGING_DEVICE_PATH;\r | |
353 | Node->DevPath.SubType = MSG_URI_DP;\r | |
354 | SetDevicePathNodeLength (Node, sizeof (EFI_DEVICE_PATH_PROTOCOL));\r | |
355 | Private->DevicePath = AppendDevicePathNode (DevicePath, (EFI_DEVICE_PATH_PROTOCOL*) Node);\r | |
356 | FreePool (Node);\r | |
357 | FreePool (DevicePath);\r | |
358 | if (Private->DevicePath == NULL) {\r | |
359 | Status = EFI_OUT_OF_RESOURCES;\r | |
360 | goto ON_ERROR;\r | |
361 | }\r | |
362 | \r | |
363 | //\r | |
364 | // Create a child handle for the HTTP boot and install DevPath and Load file protocol on it.\r | |
365 | //\r | |
366 | CopyMem (&Private->LoadFile, &gHttpBootDxeLoadFile, sizeof (Private->LoadFile));\r | |
367 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
368 | &Private->ChildHandle,\r | |
369 | &gEfiLoadFileProtocolGuid,\r | |
370 | &Private->LoadFile,\r | |
371 | &gEfiDevicePathProtocolGuid,\r | |
372 | Private->DevicePath,\r | |
373 | NULL\r | |
374 | );\r | |
375 | if (EFI_ERROR (Status)) {\r | |
376 | goto ON_ERROR;\r | |
377 | }\r | |
378 | \r | |
379 | //\r | |
380 | // Install a protocol with Caller Id Guid to the NIC, this is just to build the relationship between\r | |
381 | // NIC handle and the private data.\r | |
382 | //\r | |
383 | Status = gBS->InstallProtocolInterface (\r | |
384 | &ControllerHandle,\r | |
385 | &gEfiCallerIdGuid,\r | |
386 | EFI_NATIVE_INTERFACE,\r | |
387 | &Private->Id\r | |
388 | );\r | |
389 | if (EFI_ERROR (Status)) {\r | |
390 | goto ON_ERROR;\r | |
391 | }\r | |
392 | \r | |
393 | //\r | |
394 | // Open the Caller Id child to setup a parent-child relationship between\r | |
395 | // real NIC handle and the HTTP boot child handle.\r | |
396 | //\r | |
397 | Status = gBS->OpenProtocol (\r | |
398 | ControllerHandle,\r | |
399 | &gEfiCallerIdGuid,\r | |
400 | (VOID **) &Id,\r | |
401 | This->DriverBindingHandle,\r | |
402 | Private->ChildHandle,\r | |
403 | EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER\r | |
404 | );\r | |
405 | if (EFI_ERROR (Status)) {\r | |
406 | goto ON_ERROR;\r | |
407 | }\r | |
408 | \r | |
409 | return EFI_SUCCESS;\r | |
410 | \r | |
411 | ON_ERROR:\r | |
412 | \r | |
413 | HttpBootDestroyIp4Children (This, Private);\r | |
414 | FreePool (Private);\r | |
415 | \r | |
416 | return Status;\r | |
417 | }\r | |
418 | \r | |
419 | /**\r | |
420 | Stops a device controller or a bus controller.\r | |
421 | \r | |
422 | The Stop() function is designed to be invoked from the EFI boot service DisconnectController(). \r | |
423 | As a result, much of the error checking on the parameters to Stop() has been moved \r | |
424 | into this common boot service. It is legal to call Stop() from other locations, \r | |
425 | but the following calling restrictions must be followed, or the system behavior will not be deterministic.\r | |
426 | 1. ControllerHandle must be a valid EFI_HANDLE that was used on a previous call to this\r | |
427 | same driver's Start() function.\r | |
428 | 2. The first NumberOfChildren handles of ChildHandleBuffer must all be a valid\r | |
429 | EFI_HANDLE. In addition, all of these handles must have been created in this driver's\r | |
430 | Start() function, and the Start() function must have called OpenProtocol() on\r | |
431 | ControllerHandle with an Attribute of EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER.\r | |
432 | \r | |
433 | @param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.\r | |
434 | @param[in] ControllerHandle A handle to the device being stopped. The handle must \r | |
435 | support a bus specific I/O protocol for the driver \r | |
436 | to use to stop the device.\r | |
437 | @param[in] NumberOfChildren The number of child device handles in ChildHandleBuffer.\r | |
438 | @param[in] ChildHandleBuffer An array of child handles to be freed. May be NULL \r | |
439 | if NumberOfChildren is 0.\r | |
440 | \r | |
441 | @retval EFI_SUCCESS The device was stopped.\r | |
442 | @retval EFI_DEVICE_ERROR The device could not be stopped due to a device error.\r | |
443 | \r | |
444 | **/\r | |
445 | EFI_STATUS\r | |
446 | EFIAPI\r | |
447 | HttpBootIp4DxeDriverBindingStop (\r | |
448 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
449 | IN EFI_HANDLE ControllerHandle,\r | |
450 | IN UINTN NumberOfChildren,\r | |
451 | IN EFI_HANDLE *ChildHandleBuffer OPTIONAL\r | |
452 | )\r | |
453 | {\r | |
454 | EFI_STATUS Status;\r | |
455 | EFI_LOAD_FILE_PROTOCOL *LoadFile;\r | |
456 | HTTP_BOOT_PRIVATE_DATA *Private;\r | |
457 | EFI_HANDLE NicHandle;\r | |
458 | UINT32 *Id;\r | |
459 | \r | |
460 | //\r | |
461 | // Try to get the Load File Protocol from the controller handle.\r | |
462 | //\r | |
463 | Status = gBS->OpenProtocol (\r | |
464 | ControllerHandle,\r | |
465 | &gEfiLoadFileProtocolGuid,\r | |
466 | (VOID **) &LoadFile,\r | |
467 | This->DriverBindingHandle,\r | |
468 | ControllerHandle,\r | |
469 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
470 | );\r | |
471 | if (EFI_ERROR (Status)) {\r | |
472 | //\r | |
473 | // If failed, try to find the NIC handle for this controller.\r | |
474 | //\r | |
475 | NicHandle = HttpBootGetNicByIp4Children (ControllerHandle);\r | |
476 | if (NicHandle == NULL) {\r | |
477 | return EFI_SUCCESS;\r | |
478 | }\r | |
479 | \r | |
480 | //\r | |
481 | // Try to retrieve the private data by the Caller Id Guid.\r | |
482 | //\r | |
483 | Status = gBS->OpenProtocol (\r | |
484 | NicHandle,\r | |
485 | &gEfiCallerIdGuid,\r | |
486 | (VOID **) &Id,\r | |
487 | This->DriverBindingHandle,\r | |
488 | ControllerHandle,\r | |
489 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
490 | );\r | |
491 | if (EFI_ERROR (Status)) {\r | |
492 | return Status;\r | |
493 | }\r | |
494 | Private = HTTP_BOOT_PRIVATE_DATA_FROM_ID (Id);\r | |
495 | } else {\r | |
496 | Private = HTTP_BOOT_PRIVATE_DATA_FROM_LOADFILE (LoadFile);\r | |
497 | NicHandle = Private->Controller;\r | |
498 | }\r | |
499 | \r | |
500 | //\r | |
501 | // Disable the HTTP boot function.\r | |
502 | //\r | |
503 | Status = HttpBootStop (Private);\r | |
504 | if (Status != EFI_SUCCESS && Status != EFI_NOT_STARTED) {\r | |
505 | return Status;\r | |
506 | }\r | |
507 | \r | |
508 | //\r | |
509 | // Destory all child instance and uninstall protocol interface.\r | |
510 | //\r | |
511 | HttpBootDestroyIp4Children (This, Private);\r | |
512 | \r | |
513 | //\r | |
514 | // Release the cached data.\r | |
515 | //\r | |
516 | HttpBootFreeCacheList (Private);\r | |
517 | \r | |
518 | gBS->UninstallProtocolInterface (\r | |
519 | NicHandle,\r | |
520 | &gEfiCallerIdGuid,\r | |
521 | &Private->Id\r | |
522 | );\r | |
523 | FreePool (Private);\r | |
524 | \r | |
525 | return EFI_SUCCESS;\r | |
526 | }\r | |
527 | \r | |
528 | /**\r | |
529 | This is the declaration of an EFI image entry point. This entry point is\r | |
530 | the same for UEFI Applications, UEFI OS Loaders, and UEFI Drivers including\r | |
531 | both device drivers and bus drivers.\r | |
532 | \r | |
533 | @param[in] ImageHandle The firmware allocated handle for the UEFI image.\r | |
534 | @param[in] SystemTable A pointer to the EFI System Table.\r | |
535 | \r | |
536 | @retval EFI_SUCCESS The operation completed successfully.\r | |
537 | @retval Others An unexpected error occurred.\r | |
538 | \r | |
539 | **/\r | |
540 | EFI_STATUS\r | |
541 | EFIAPI\r | |
542 | HttpBootDxeDriverEntryPoint (\r | |
543 | IN EFI_HANDLE ImageHandle,\r | |
544 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
545 | )\r | |
546 | {\r | |
547 | //\r | |
548 | // Install UEFI Driver Model protocol(s).\r | |
549 | //\r | |
550 | return EfiLibInstallDriverBindingComponentName2 (\r | |
551 | ImageHandle,\r | |
552 | SystemTable,\r | |
553 | &gHttpBootIp4DxeDriverBinding,\r | |
554 | ImageHandle,\r | |
555 | &gHttpBootDxeComponentName,\r | |
556 | &gHttpBootDxeComponentName2\r | |
557 | );\r | |
558 | }\r | |
559 | \r |