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d933e70a JW |
1 | /** @file\r |
2 | The implementation of EFI_LOAD_FILE_PROTOCOL for UEFI HTTP boot.\r | |
3 | \r | |
fa848a40 | 4 | Copyright (c) 2015 - 2016, Intel Corporation. All rights reserved.<BR>\r |
44a7d08b | 5 | (C) Copyright 2016 Hewlett Packard Enterprise Development LP<BR>\r |
d933e70a JW |
6 | This program and the accompanying materials are licensed and made available under \r |
7 | the terms and conditions of the BSD License that accompanies this distribution. \r | |
8 | The full text of the license may be found at\r | |
9 | http://opensource.org/licenses/bsd-license.php. \r | |
10 | \r | |
11 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r | |
12 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
13 | \r | |
14 | **/\r | |
15 | \r | |
16 | #include "HttpBootDxe.h"\r | |
17 | \r | |
18 | /**\r | |
19 | Enable the use of UEFI HTTP boot function.\r | |
20 | \r | |
587d204c FS |
21 | If the driver has already been started but not satisfy the requirement (IP stack and \r |
22 | specified boot file path), this function will stop the driver and start it again.\r | |
23 | \r | |
d933e70a | 24 | @param[in] Private The pointer to the driver's private data.\r |
b659408b ZL |
25 | @param[in] UsingIpv6 Specifies the type of IP addresses that are to be\r |
26 | used during the session that is being started.\r | |
27 | Set to TRUE for IPv6, and FALSE for IPv4.\r | |
fa848a40 | 28 | @param[in] FilePath The device specific path of the file to load.\r |
d933e70a JW |
29 | \r |
30 | @retval EFI_SUCCESS HTTP boot was successfully enabled.\r | |
587d204c FS |
31 | @retval EFI_INVALID_PARAMETER Private is NULL or FilePath is NULL.\r |
32 | @retval EFI_INVALID_PARAMETER The FilePath doesn't contain a valid URI device path node.\r | |
d933e70a | 33 | @retval EFI_ALREADY_STARTED The driver is already in started state.\r |
fa848a40 | 34 | @retval EFI_OUT_OF_RESOURCES There are not enough resources.\r |
d933e70a JW |
35 | \r |
36 | **/\r | |
37 | EFI_STATUS\r | |
38 | HttpBootStart (\r | |
b659408b | 39 | IN HTTP_BOOT_PRIVATE_DATA *Private,\r |
fa848a40 FS |
40 | IN BOOLEAN UsingIpv6,\r |
41 | IN EFI_DEVICE_PATH_PROTOCOL *FilePath\r | |
d933e70a JW |
42 | )\r |
43 | {\r | |
b659408b ZL |
44 | UINTN Index;\r |
45 | EFI_STATUS Status;\r | |
587d204c FS |
46 | CHAR8 *Uri;\r |
47 | \r | |
d933e70a | 48 | \r |
fa848a40 | 49 | if (Private == NULL || FilePath == NULL) {\r |
d933e70a JW |
50 | return EFI_INVALID_PARAMETER;\r |
51 | }\r | |
587d204c FS |
52 | \r |
53 | //\r | |
54 | // Check the URI in the input FilePath, in order to see whether it is\r | |
55 | // required to boot from a new specified boot file. \r | |
56 | //\r | |
57 | Status = HttpBootParseFilePath (FilePath, &Uri);\r | |
58 | if (EFI_ERROR (Status)) {\r | |
59 | return EFI_INVALID_PARAMETER;\r | |
60 | }\r | |
61 | \r | |
62 | //\r | |
63 | // Check whether we need to stop and restart the HTTP boot driver.\r | |
64 | //\r | |
d933e70a | 65 | if (Private->Started) {\r |
587d204c FS |
66 | //\r |
67 | // Restart is needed in 2 cases:\r | |
68 | // 1. Http boot driver has already been started but not on the required IP stack.\r | |
69 | // 2. The specified boot file URI in FilePath is different with the one we have\r | |
70 | // recorded before.\r | |
71 | //\r | |
72 | if ((UsingIpv6 != Private->UsingIpv6) || \r | |
73 | ((Uri != NULL) && (AsciiStrCmp (Private->BootFileUri, Uri) != 0))) {\r | |
74 | //\r | |
75 | // Restart is required, first stop then continue this start function.\r | |
76 | //\r | |
77 | Status = HttpBootStop (Private);\r | |
78 | if (EFI_ERROR (Status)) {\r | |
79 | return Status;\r | |
80 | }\r | |
81 | } else {\r | |
82 | //\r | |
83 | // Restart is not required.\r | |
84 | //\r | |
85 | if (Uri != NULL) {\r | |
86 | FreePool (Uri);\r | |
87 | }\r | |
88 | return EFI_ALREADY_STARTED;\r | |
89 | }\r | |
d933e70a JW |
90 | }\r |
91 | \r | |
b659408b ZL |
92 | //\r |
93 | // Detect whether using ipv6 or not, and set it to the private data.\r | |
94 | //\r | |
95 | if (UsingIpv6 && Private->Ip6Nic != NULL) {\r | |
96 | Private->UsingIpv6 = TRUE;\r | |
97 | } else if (!UsingIpv6 && Private->Ip4Nic != NULL) {\r | |
98 | Private->UsingIpv6 = FALSE;\r | |
99 | } else {\r | |
587d204c FS |
100 | if (Uri != NULL) {\r |
101 | FreePool (Uri);\r | |
102 | }\r | |
b659408b ZL |
103 | return EFI_UNSUPPORTED;\r |
104 | }\r | |
fa848a40 FS |
105 | \r |
106 | //\r | |
587d204c | 107 | // Record the specified URI and prepare the URI parser if needed.\r |
fa848a40 | 108 | //\r |
587d204c | 109 | Private->FilePathUri = Uri;\r |
fa848a40 FS |
110 | if (Private->FilePathUri != NULL) {\r |
111 | Status = HttpParseUrl (\r | |
112 | Private->FilePathUri,\r | |
113 | (UINT32) AsciiStrLen (Private->FilePathUri),\r | |
114 | FALSE,\r | |
115 | &Private->FilePathUriParser\r | |
116 | );\r | |
117 | if (EFI_ERROR (Status)) {\r | |
587d204c | 118 | FreePool (Private->FilePathUri);\r |
fa848a40 FS |
119 | return Status;\r |
120 | }\r | |
121 | }\r | |
b659408b ZL |
122 | \r |
123 | //\r | |
124 | // Init the content of cached DHCP offer list.\r | |
125 | //\r | |
126 | ZeroMem (Private->OfferBuffer, sizeof (Private->OfferBuffer));\r | |
d933e70a | 127 | if (!Private->UsingIpv6) {\r |
d933e70a JW |
128 | for (Index = 0; Index < HTTP_BOOT_OFFER_MAX_NUM; Index++) {\r |
129 | Private->OfferBuffer[Index].Dhcp4.Packet.Offer.Size = HTTP_BOOT_DHCP4_PACKET_MAX_SIZE;\r | |
130 | }\r | |
131 | } else {\r | |
b659408b ZL |
132 | for (Index = 0; Index < HTTP_BOOT_OFFER_MAX_NUM; Index++) {\r |
133 | Private->OfferBuffer[Index].Dhcp6.Packet.Offer.Size = HTTP_BOOT_DHCP6_PACKET_MAX_SIZE;\r | |
134 | }\r | |
d933e70a JW |
135 | }\r |
136 | \r | |
b659408b ZL |
137 | if (Private->UsingIpv6) {\r |
138 | //\r | |
139 | // Set Ip6 policy to Automatic to start the Ip6 router discovery.\r | |
140 | //\r | |
141 | Status = HttpBootSetIp6Policy (Private);\r | |
142 | if (EFI_ERROR (Status)) {\r | |
143 | return Status;\r | |
144 | }\r | |
145 | }\r | |
587d204c | 146 | Private->Started = TRUE;\r |
d933e70a JW |
147 | \r |
148 | return EFI_SUCCESS;\r | |
149 | }\r | |
150 | \r | |
151 | /**\r | |
b659408b | 152 | Attempt to complete a DHCPv4 D.O.R.A or DHCPv6 S.R.A.A sequence to retrieve the boot resource information.\r |
d933e70a JW |
153 | \r |
154 | @param[in] Private The pointer to the driver's private data.\r | |
155 | \r | |
156 | @retval EFI_SUCCESS Boot info was successfully retrieved.\r | |
157 | @retval EFI_INVALID_PARAMETER Private is NULL.\r | |
158 | @retval EFI_NOT_STARTED The driver is in stopped state.\r | |
159 | @retval EFI_DEVICE_ERROR An unexpected network error occurred.\r | |
160 | @retval Others Other errors as indicated.\r | |
161 | \r | |
162 | **/\r | |
163 | EFI_STATUS\r | |
164 | HttpBootDhcp (\r | |
165 | IN HTTP_BOOT_PRIVATE_DATA *Private\r | |
166 | )\r | |
167 | {\r | |
168 | EFI_STATUS Status;\r | |
169 | \r | |
170 | if (Private == NULL) {\r | |
171 | return EFI_INVALID_PARAMETER;\r | |
172 | }\r | |
173 | \r | |
174 | if (!Private->Started) {\r | |
175 | return EFI_NOT_STARTED;\r | |
176 | }\r | |
177 | \r | |
178 | Status = EFI_DEVICE_ERROR;\r | |
179 | \r | |
180 | if (!Private->UsingIpv6) {\r | |
b659408b ZL |
181 | //\r |
182 | // Start D.O.R.A process to get a IPv4 address and other boot information.\r | |
183 | //\r | |
d933e70a JW |
184 | Status = HttpBootDhcp4Dora (Private);\r |
185 | } else {\r | |
b659408b ZL |
186 | //\r |
187 | // Start S.A.R.R process to get a IPv6 address and other boot information.\r | |
188 | //\r | |
189 | Status = HttpBootDhcp6Sarr (Private);\r | |
d933e70a JW |
190 | }\r |
191 | \r | |
192 | return Status;\r | |
193 | }\r | |
194 | \r | |
195 | /**\r | |
196 | Attempt to download the boot file through HTTP message exchange.\r | |
197 | \r | |
198 | @param[in] Private The pointer to the driver's private data.\r | |
199 | @param[in, out] BufferSize On input the size of Buffer in bytes. On output with a return\r | |
200 | code of EFI_SUCCESS, the amount of data transferred to\r | |
201 | Buffer. On output with a return code of EFI_BUFFER_TOO_SMALL,\r | |
202 | the size of Buffer required to retrieve the requested file.\r | |
203 | @param[in] Buffer The memory buffer to transfer the file to. If Buffer is NULL,\r | |
204 | then the size of the requested file is returned in\r | |
205 | BufferSize.\r | |
587d204c | 206 | @param[out] ImageType The image type of the downloaded file.\r |
d933e70a JW |
207 | \r |
208 | @retval EFI_SUCCESS Boot file was loaded successfully.\r | |
587d204c FS |
209 | @retval EFI_INVALID_PARAMETER Private is NULL, or ImageType is NULL, or BufferSize is NULL.\r |
210 | @retval EFI_INVALID_PARAMETER *BufferSize is not zero, and Buffer is NULL.\r | |
d933e70a JW |
211 | @retval EFI_NOT_STARTED The driver is in stopped state.\r |
212 | @retval EFI_BUFFER_TOO_SMALL The BufferSize is too small to read the boot file. BufferSize has \r | |
213 | been updated with the size needed to complete the request.\r | |
214 | @retval EFI_DEVICE_ERROR An unexpected network error occurred.\r | |
215 | @retval Others Other errors as indicated.\r | |
216 | \r | |
217 | **/\r | |
218 | EFI_STATUS\r | |
219 | HttpBootLoadFile (\r | |
220 | IN HTTP_BOOT_PRIVATE_DATA *Private,\r | |
221 | IN OUT UINTN *BufferSize,\r | |
587d204c FS |
222 | IN VOID *Buffer, OPTIONAL\r |
223 | OUT HTTP_BOOT_IMAGE_TYPE *ImageType\r | |
d933e70a JW |
224 | )\r |
225 | {\r | |
226 | EFI_STATUS Status;\r | |
227 | \r | |
587d204c FS |
228 | if (Private == NULL || ImageType == NULL || BufferSize == NULL ) {\r |
229 | return EFI_INVALID_PARAMETER;\r | |
230 | }\r | |
231 | \r | |
232 | if (*BufferSize != 0 && Buffer == NULL) {\r | |
d933e70a JW |
233 | return EFI_INVALID_PARAMETER;\r |
234 | }\r | |
235 | \r | |
236 | if (!Private->Started) {\r | |
237 | return EFI_NOT_STARTED;\r | |
238 | }\r | |
239 | \r | |
240 | Status = EFI_DEVICE_ERROR;\r | |
241 | \r | |
242 | if (Private->BootFileUri == NULL) {\r | |
243 | //\r | |
244 | // Parse the cached offer to get the boot file URL first.\r | |
245 | //\r | |
246 | Status = HttpBootDiscoverBootInfo (Private);\r | |
247 | if (EFI_ERROR (Status)) {\r | |
248 | return Status;\r | |
249 | }\r | |
250 | }\r | |
251 | \r | |
252 | if (!Private->HttpCreated) {\r | |
253 | //\r | |
254 | // Create HTTP child.\r | |
255 | //\r | |
256 | Status = HttpBootCreateHttpIo (Private);\r | |
257 | if (EFI_ERROR (Status)) {\r | |
258 | return Status;\r | |
259 | }\r | |
260 | }\r | |
261 | \r | |
262 | if (Private->BootFileSize == 0) {\r | |
263 | //\r | |
264 | // Discover the information about the bootfile if we haven't.\r | |
265 | //\r | |
266 | \r | |
267 | //\r | |
268 | // Try to use HTTP HEAD method.\r | |
269 | //\r | |
270 | Status = HttpBootGetBootFile (\r | |
271 | Private,\r | |
272 | TRUE,\r | |
273 | &Private->BootFileSize,\r | |
587d204c | 274 | NULL,\r |
44a7d08b | 275 | &Private->ImageType\r |
d933e70a JW |
276 | );\r |
277 | if (EFI_ERROR (Status) && Status != EFI_BUFFER_TOO_SMALL) {\r | |
278 | //\r | |
279 | // Failed to get file size by HEAD method, may be trunked encoding, try HTTP GET method.\r | |
280 | //\r | |
281 | ASSERT (Private->BootFileSize == 0);\r | |
282 | Status = HttpBootGetBootFile (\r | |
283 | Private,\r | |
284 | FALSE,\r | |
285 | &Private->BootFileSize,\r | |
587d204c | 286 | NULL,\r |
44a7d08b | 287 | &Private->ImageType\r |
d933e70a JW |
288 | );\r |
289 | if (EFI_ERROR (Status) && Status != EFI_BUFFER_TOO_SMALL) {\r | |
290 | return Status;\r | |
291 | }\r | |
292 | }\r | |
293 | }\r | |
294 | \r | |
295 | if (*BufferSize < Private->BootFileSize) {\r | |
296 | *BufferSize = Private->BootFileSize;\r | |
44a7d08b | 297 | *ImageType = Private->ImageType;\r |
d933e70a JW |
298 | return EFI_BUFFER_TOO_SMALL;\r |
299 | }\r | |
300 | \r | |
301 | //\r | |
302 | // Load the boot file into Buffer\r | |
303 | //\r | |
304 | return HttpBootGetBootFile (\r | |
305 | Private,\r | |
306 | FALSE,\r | |
307 | BufferSize,\r | |
587d204c FS |
308 | Buffer,\r |
309 | ImageType\r | |
d933e70a JW |
310 | );\r |
311 | }\r | |
312 | \r | |
313 | /**\r | |
314 | Disable the use of UEFI HTTP boot function.\r | |
315 | \r | |
316 | @param[in] Private The pointer to the driver's private data.\r | |
317 | \r | |
318 | @retval EFI_SUCCESS HTTP boot was successfully disabled.\r | |
319 | @retval EFI_NOT_STARTED The driver is already in stopped state.\r | |
320 | @retval EFI_INVALID_PARAMETER Private is NULL.\r | |
321 | @retval Others Unexpected error when stop the function.\r | |
322 | \r | |
323 | **/\r | |
324 | EFI_STATUS\r | |
325 | HttpBootStop (\r | |
326 | IN HTTP_BOOT_PRIVATE_DATA *Private\r | |
327 | )\r | |
328 | {\r | |
329 | UINTN Index;\r | |
330 | \r | |
331 | if (Private == NULL) {\r | |
332 | return EFI_INVALID_PARAMETER;\r | |
333 | }\r | |
334 | \r | |
335 | if (!Private->Started) {\r | |
336 | return EFI_NOT_STARTED;\r | |
337 | }\r | |
338 | \r | |
339 | if (Private->HttpCreated) {\r | |
340 | HttpIoDestroyIo (&Private->HttpIo);\r | |
341 | Private->HttpCreated = FALSE;\r | |
342 | }\r | |
343 | \r | |
344 | Private->Started = FALSE;\r | |
345 | ZeroMem (&Private->StationIp, sizeof (EFI_IP_ADDRESS));\r | |
346 | ZeroMem (&Private->SubnetMask, sizeof (EFI_IP_ADDRESS));\r | |
347 | ZeroMem (&Private->GatewayIp, sizeof (EFI_IP_ADDRESS));\r | |
348 | Private->Port = 0;\r | |
349 | Private->BootFileUri = NULL;\r | |
350 | Private->BootFileUriParser = NULL;\r | |
351 | Private->BootFileSize = 0;\r | |
352 | Private->SelectIndex = 0;\r | |
b659408b | 353 | Private->SelectProxyType = HttpOfferTypeMax; \r |
d933e70a JW |
354 | \r |
355 | if (!Private->UsingIpv6) {\r | |
356 | //\r | |
357 | // Stop and release the DHCP4 child.\r | |
358 | //\r | |
359 | Private->Dhcp4->Stop (Private->Dhcp4);\r | |
360 | Private->Dhcp4->Configure (Private->Dhcp4, NULL);\r | |
361 | \r | |
362 | for (Index = 0; Index < HTTP_BOOT_OFFER_MAX_NUM; Index++) {\r | |
363 | if (Private->OfferBuffer[Index].Dhcp4.UriParser) {\r | |
364 | HttpUrlFreeParser (Private->OfferBuffer[Index].Dhcp4.UriParser);\r | |
365 | }\r | |
366 | }\r | |
367 | } else {\r | |
b659408b ZL |
368 | //\r |
369 | // Stop and release the DHCP6 child.\r | |
370 | //\r | |
371 | Private->Dhcp6->Stop (Private->Dhcp6);\r | |
372 | Private->Dhcp6->Configure (Private->Dhcp6, NULL);\r | |
373 | \r | |
374 | for (Index = 0; Index < HTTP_BOOT_OFFER_MAX_NUM; Index++) {\r | |
375 | if (Private->OfferBuffer[Index].Dhcp6.UriParser) {\r | |
376 | HttpUrlFreeParser (Private->OfferBuffer[Index].Dhcp6.UriParser);\r | |
377 | }\r | |
378 | }\r | |
d933e70a | 379 | }\r |
fa848a40 FS |
380 | \r |
381 | if (Private->FilePathUri!= NULL) {\r | |
382 | FreePool (Private->FilePathUri);\r | |
383 | HttpUrlFreeParser (Private->FilePathUriParser);\r | |
384 | Private->FilePathUri = NULL;\r | |
385 | Private->FilePathUriParser = NULL;\r | |
386 | }\r | |
d933e70a JW |
387 | \r |
388 | ZeroMem (Private->OfferBuffer, sizeof (Private->OfferBuffer));\r | |
389 | Private->OfferNum = 0;\r | |
390 | ZeroMem (Private->OfferCount, sizeof (Private->OfferCount));\r | |
391 | ZeroMem (Private->OfferIndex, sizeof (Private->OfferIndex));\r | |
fa848a40 FS |
392 | \r |
393 | HttpBootFreeCacheList (Private);\r | |
394 | \r | |
d933e70a JW |
395 | return EFI_SUCCESS;\r |
396 | }\r | |
397 | \r | |
398 | /**\r | |
399 | Causes the driver to load a specified file.\r | |
400 | \r | |
401 | @param This Protocol instance pointer.\r | |
402 | @param FilePath The device specific path of the file to load.\r | |
403 | @param BootPolicy If TRUE, indicates that the request originates from the\r | |
404 | boot manager is attempting to load FilePath as a boot\r | |
405 | selection. If FALSE, then FilePath must match as exact file\r | |
406 | to be loaded.\r | |
407 | @param BufferSize On input the size of Buffer in bytes. On output with a return\r | |
408 | code of EFI_SUCCESS, the amount of data transferred to\r | |
409 | Buffer. On output with a return code of EFI_BUFFER_TOO_SMALL,\r | |
410 | the size of Buffer required to retrieve the requested file.\r | |
411 | @param Buffer The memory buffer to transfer the file to. IF Buffer is NULL,\r | |
412 | then the size of the requested file is returned in\r | |
413 | BufferSize.\r | |
414 | \r | |
415 | @retval EFI_SUCCESS The file was loaded.\r | |
416 | @retval EFI_UNSUPPORTED The device does not support the provided BootPolicy\r | |
417 | @retval EFI_INVALID_PARAMETER FilePath is not a valid device path, or\r | |
418 | BufferSize is NULL.\r | |
419 | @retval EFI_NO_MEDIA No medium was present to load the file.\r | |
420 | @retval EFI_DEVICE_ERROR The file was not loaded due to a device error.\r | |
421 | @retval EFI_NO_RESPONSE The remote system did not respond.\r | |
422 | @retval EFI_NOT_FOUND The file was not found.\r | |
423 | @retval EFI_ABORTED The file load process was manually cancelled.\r | |
424 | @retval EFI_BUFFER_TOO_SMALL The BufferSize is too small to read the current directory entry.\r | |
425 | BufferSize has been updated with the size needed to complete\r | |
426 | the request.\r | |
427 | \r | |
428 | **/\r | |
429 | EFI_STATUS\r | |
430 | EFIAPI\r | |
431 | HttpBootDxeLoadFile (\r | |
432 | IN EFI_LOAD_FILE_PROTOCOL *This,\r | |
433 | IN EFI_DEVICE_PATH_PROTOCOL *FilePath,\r | |
434 | IN BOOLEAN BootPolicy,\r | |
435 | IN OUT UINTN *BufferSize,\r | |
436 | IN VOID *Buffer OPTIONAL\r | |
437 | )\r | |
438 | {\r | |
439 | HTTP_BOOT_PRIVATE_DATA *Private;\r | |
b659408b | 440 | HTTP_BOOT_VIRTUAL_NIC *VirtualNic;\r |
d933e70a | 441 | BOOLEAN MediaPresent;\r |
b659408b | 442 | BOOLEAN UsingIpv6;\r |
d933e70a | 443 | EFI_STATUS Status;\r |
587d204c | 444 | HTTP_BOOT_IMAGE_TYPE ImageType;\r |
d933e70a | 445 | \r |
fa848a40 | 446 | if (This == NULL || BufferSize == NULL || FilePath == NULL) {\r |
d933e70a JW |
447 | return EFI_INVALID_PARAMETER;\r |
448 | }\r | |
449 | \r | |
450 | //\r | |
451 | // Only support BootPolicy\r | |
452 | //\r | |
453 | if (!BootPolicy) {\r | |
454 | return EFI_UNSUPPORTED;\r | |
455 | }\r | |
456 | \r | |
b659408b ZL |
457 | VirtualNic = HTTP_BOOT_VIRTUAL_NIC_FROM_LOADFILE (This);\r |
458 | Private = VirtualNic->Private;\r | |
b659408b | 459 | \r |
d933e70a JW |
460 | //\r |
461 | // Check media status before HTTP boot start\r | |
462 | //\r | |
463 | MediaPresent = TRUE;\r | |
464 | NetLibDetectMedia (Private->Controller, &MediaPresent);\r | |
465 | if (!MediaPresent) {\r | |
466 | return EFI_NO_MEDIA;\r | |
467 | }\r | |
fa848a40 | 468 | \r |
b659408b ZL |
469 | //\r |
470 | // Check whether the virtual nic is using IPv6 or not.\r | |
471 | //\r | |
fa848a40 | 472 | UsingIpv6 = FALSE;\r |
b659408b ZL |
473 | if (VirtualNic == Private->Ip6Nic) {\r |
474 | UsingIpv6 = TRUE;\r | |
475 | }\r | |
fa848a40 | 476 | \r |
d933e70a | 477 | //\r |
fa848a40 | 478 | // Initialize HTTP boot.\r |
d933e70a | 479 | //\r |
fa848a40 | 480 | Status = HttpBootStart (Private, UsingIpv6, FilePath);\r |
587d204c FS |
481 | if (Status != EFI_SUCCESS && Status != EFI_ALREADY_STARTED) {\r |
482 | return Status;\r | |
b659408b | 483 | }\r |
587d204c | 484 | \r |
fa848a40 FS |
485 | //\r |
486 | // Load the boot file.\r | |
487 | //\r | |
587d204c FS |
488 | ImageType = ImageTypeMax;\r |
489 | Status = HttpBootLoadFile (Private, BufferSize, Buffer, &ImageType);\r | |
490 | if (EFI_ERROR (Status)) {\r | |
491 | if (Status == EFI_BUFFER_TOO_SMALL && (ImageType == ImageTypeVirtualCd || ImageType == ImageTypeVirtualDisk)) {\r | |
492 | Status = EFI_WARN_FILE_SYSTEM;\r | |
493 | } else if (Status != EFI_BUFFER_TOO_SMALL) {\r | |
494 | HttpBootStop (Private);\r | |
495 | }\r | |
496 | return Status;\r | |
d933e70a JW |
497 | }\r |
498 | \r | |
587d204c FS |
499 | //\r |
500 | // Register the RAM Disk to the system if needed.\r | |
501 | //\r | |
502 | if (ImageType == ImageTypeVirtualCd || ImageType == ImageTypeVirtualDisk) {\r | |
503 | Status = HttpBootRegisterRamDisk (Private, *BufferSize, Buffer, ImageType);\r | |
504 | if (!EFI_ERROR (Status)) {\r | |
505 | Status = EFI_WARN_FILE_SYSTEM;\r | |
b659408b | 506 | }\r |
d933e70a | 507 | }\r |
287f05cd FS |
508 | \r |
509 | //\r | |
510 | // Stop the HTTP Boot service after the boot image is downloaded.\r | |
511 | //\r | |
512 | HttpBootStop (Private);\r | |
d933e70a JW |
513 | return Status;\r |
514 | }\r | |
515 | \r | |
516 | ///\r | |
517 | /// Load File Protocol instance\r | |
518 | ///\r | |
519 | GLOBAL_REMOVE_IF_UNREFERENCED \r | |
520 | EFI_LOAD_FILE_PROTOCOL gHttpBootDxeLoadFile = {\r | |
521 | HttpBootDxeLoadFile\r | |
522 | };\r |