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Commit | Line | Data |
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6b40e66a RN |
1 | /** @file\r |
2 | Rewrite the BootOrder NvVar based on QEMU's "bootorder" fw_cfg file.\r | |
3 | \r | |
4 | Copyright (C) 2012 - 2014, Red Hat, Inc.\r | |
d27ec22d | 5 | Copyright (c) 2013 - 2016, Intel Corporation. All rights reserved.<BR>\r |
6b40e66a | 6 | \r |
b26f0cf9 | 7 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
6b40e66a RN |
8 | **/\r |
9 | \r | |
10 | #include <Library/QemuFwCfgLib.h>\r | |
11 | #include <Library/DebugLib.h>\r | |
12 | #include <Library/MemoryAllocationLib.h>\r | |
d27ec22d | 13 | #include <Library/UefiBootManagerLib.h>\r |
6b40e66a RN |
14 | #include <Library/UefiBootServicesTableLib.h>\r |
15 | #include <Library/UefiRuntimeServicesTableLib.h>\r | |
16 | #include <Library/BaseLib.h>\r | |
17 | #include <Library/PrintLib.h>\r | |
18 | #include <Library/DevicePathLib.h>\r | |
19 | #include <Library/QemuBootOrderLib.h>\r | |
20 | #include <Library/BaseMemoryLib.h>\r | |
21 | #include <Guid/GlobalVariable.h>\r | |
22 | #include <Guid/VirtioMmioTransport.h>\r | |
23 | \r | |
24 | #include "ExtraRootBusMap.h"\r | |
25 | \r | |
26 | /**\r | |
27 | OpenFirmware to UEFI device path translation output buffer size in CHAR16's.\r | |
28 | **/\r | |
ac0a286f | 29 | #define TRANSLATION_OUTPUT_SIZE 0x100\r |
6b40e66a RN |
30 | \r |
31 | /**\r | |
32 | Output buffer size for OpenFirmware to UEFI device path fragment translation,\r | |
33 | in CHAR16's, for a sequence of PCI bridges.\r | |
34 | **/\r | |
ac0a286f | 35 | #define BRIDGE_TRANSLATION_OUTPUT_SIZE 0x40\r |
6b40e66a RN |
36 | \r |
37 | /**\r | |
38 | Numbers of nodes in OpenFirmware device paths that are required and examined.\r | |
39 | **/\r | |
ac0a286f MK |
40 | #define REQUIRED_PCI_OFW_NODES 2\r |
41 | #define REQUIRED_MMIO_OFW_NODES 1\r | |
42 | #define EXAMINED_OFW_NODES 6\r | |
6b40e66a RN |
43 | \r |
44 | /**\r | |
45 | Simple character classification routines, corresponding to POSIX class names\r | |
46 | and ASCII encoding.\r | |
47 | **/\r | |
48 | STATIC\r | |
49 | BOOLEAN\r | |
50 | IsAlnum (\r | |
ac0a286f | 51 | IN CHAR8 Chr\r |
6b40e66a RN |
52 | )\r |
53 | {\r | |
54 | return (('0' <= Chr && Chr <= '9') ||\r | |
55 | ('A' <= Chr && Chr <= 'Z') ||\r | |
56 | ('a' <= Chr && Chr <= 'z')\r | |
57 | );\r | |
58 | }\r | |
59 | \r | |
6b40e66a RN |
60 | STATIC\r |
61 | BOOLEAN\r | |
62 | IsDriverNamePunct (\r | |
ac0a286f | 63 | IN CHAR8 Chr\r |
6b40e66a RN |
64 | )\r |
65 | {\r | |
66 | return (Chr == ',' || Chr == '.' || Chr == '_' ||\r | |
67 | Chr == '+' || Chr == '-'\r | |
68 | );\r | |
69 | }\r | |
70 | \r | |
6b40e66a RN |
71 | STATIC\r |
72 | BOOLEAN\r | |
73 | IsPrintNotDelim (\r | |
ac0a286f | 74 | IN CHAR8 Chr\r |
6b40e66a RN |
75 | )\r |
76 | {\r | |
77 | return (32 <= Chr && Chr <= 126 &&\r | |
78 | Chr != '/' && Chr != '@' && Chr != ':');\r | |
79 | }\r | |
80 | \r | |
6b40e66a RN |
81 | /**\r |
82 | Utility types and functions.\r | |
83 | **/\r | |
84 | typedef struct {\r | |
ac0a286f MK |
85 | CONST CHAR8 *Ptr; // not necessarily NUL-terminated\r |
86 | UINTN Len; // number of non-NUL characters\r | |
6b40e66a RN |
87 | } SUBSTRING;\r |
88 | \r | |
6b40e66a RN |
89 | /**\r |
90 | \r | |
91 | Check if Substring and String have identical contents.\r | |
92 | \r | |
93 | The function relies on the restriction that a SUBSTRING cannot have embedded\r | |
94 | NULs either.\r | |
95 | \r | |
96 | @param[in] Substring The SUBSTRING input to the comparison.\r | |
97 | \r | |
98 | @param[in] String The ASCII string input to the comparison.\r | |
99 | \r | |
100 | \r | |
101 | @return Whether the inputs have identical contents.\r | |
102 | \r | |
103 | **/\r | |
104 | STATIC\r | |
105 | BOOLEAN\r | |
106 | SubstringEq (\r | |
ac0a286f MK |
107 | IN SUBSTRING Substring,\r |
108 | IN CONST CHAR8 *String\r | |
6b40e66a RN |
109 | )\r |
110 | {\r | |
ac0a286f MK |
111 | UINTN Pos;\r |
112 | CONST CHAR8 *Chr;\r | |
6b40e66a RN |
113 | \r |
114 | Pos = 0;\r | |
115 | Chr = String;\r | |
116 | \r | |
117 | while (Pos < Substring.Len && Substring.Ptr[Pos] == *Chr) {\r | |
118 | ++Pos;\r | |
119 | ++Chr;\r | |
120 | }\r | |
121 | \r | |
122 | return (BOOLEAN)(Pos == Substring.Len && *Chr == '\0');\r | |
123 | }\r | |
124 | \r | |
6b40e66a RN |
125 | /**\r |
126 | \r | |
127 | Parse a comma-separated list of hexadecimal integers into the elements of an\r | |
128 | UINT64 array.\r | |
129 | \r | |
130 | Whitespace, "0x" prefixes, leading or trailing commas, sequences of commas,\r | |
131 | or an empty string are not allowed; they are rejected.\r | |
132 | \r | |
133 | The function relies on ASCII encoding.\r | |
134 | \r | |
135 | @param[in] UnitAddress The substring to parse.\r | |
136 | \r | |
137 | @param[out] Result The array, allocated by the caller, to receive\r | |
138 | the parsed values. This parameter may be NULL if\r | |
139 | NumResults is zero on input.\r | |
140 | \r | |
141 | @param[in out] NumResults On input, the number of elements allocated for\r | |
142 | Result. On output, the number of elements it has\r | |
143 | taken (or would have taken) to parse the string\r | |
144 | fully.\r | |
145 | \r | |
146 | \r | |
147 | @retval RETURN_SUCCESS UnitAddress has been fully parsed.\r | |
148 | NumResults is set to the number of parsed\r | |
149 | values; the corresponding elements have\r | |
150 | been set in Result. The rest of Result's\r | |
151 | elements are unchanged.\r | |
152 | \r | |
153 | @retval RETURN_BUFFER_TOO_SMALL UnitAddress has been fully parsed.\r | |
154 | NumResults is set to the number of parsed\r | |
155 | values, but elements have been stored only\r | |
156 | up to the input value of NumResults, which\r | |
157 | is less than what has been parsed.\r | |
158 | \r | |
159 | @retval RETURN_INVALID_PARAMETER Parse error. The contents of Results is\r | |
160 | indeterminate. NumResults has not been\r | |
161 | changed.\r | |
162 | \r | |
163 | **/\r | |
164 | STATIC\r | |
165 | RETURN_STATUS\r | |
166 | ParseUnitAddressHexList (\r | |
167 | IN SUBSTRING UnitAddress,\r | |
168 | OUT UINT64 *Result,\r | |
169 | IN OUT UINTN *NumResults\r | |
170 | )\r | |
171 | {\r | |
ac0a286f MK |
172 | UINTN Entry; // number of entry currently being parsed\r |
173 | UINT64 EntryVal; // value being constructed for current entry\r | |
174 | CHAR8 PrevChr; // UnitAddress character previously checked\r | |
175 | UINTN Pos; // current position within UnitAddress\r | |
176 | RETURN_STATUS Status;\r | |
6b40e66a RN |
177 | \r |
178 | Entry = 0;\r | |
179 | EntryVal = 0;\r | |
180 | PrevChr = ',';\r | |
181 | \r | |
182 | for (Pos = 0; Pos < UnitAddress.Len; ++Pos) {\r | |
ac0a286f MK |
183 | CHAR8 Chr;\r |
184 | INT8 Val;\r | |
6b40e66a RN |
185 | \r |
186 | Chr = UnitAddress.Ptr[Pos];\r | |
187 | Val = ('a' <= Chr && Chr <= 'f') ? (Chr - 'a' + 10) :\r | |
188 | ('A' <= Chr && Chr <= 'F') ? (Chr - 'A' + 10) :\r | |
ac0a286f | 189 | ('0' <= Chr && Chr <= '9') ? (Chr - '0') :\r |
6b40e66a RN |
190 | -1;\r |
191 | \r | |
192 | if (Val >= 0) {\r | |
193 | if (EntryVal > 0xFFFFFFFFFFFFFFFull) {\r | |
194 | return RETURN_INVALID_PARAMETER;\r | |
195 | }\r | |
ac0a286f | 196 | \r |
6b40e66a RN |
197 | EntryVal = LShiftU64 (EntryVal, 4) | Val;\r |
198 | } else if (Chr == ',') {\r | |
199 | if (PrevChr == ',') {\r | |
200 | return RETURN_INVALID_PARAMETER;\r | |
201 | }\r | |
ac0a286f | 202 | \r |
6b40e66a RN |
203 | if (Entry < *NumResults) {\r |
204 | Result[Entry] = EntryVal;\r | |
205 | }\r | |
ac0a286f | 206 | \r |
6b40e66a RN |
207 | ++Entry;\r |
208 | EntryVal = 0;\r | |
209 | } else {\r | |
210 | return RETURN_INVALID_PARAMETER;\r | |
211 | }\r | |
212 | \r | |
213 | PrevChr = Chr;\r | |
214 | }\r | |
215 | \r | |
216 | if (PrevChr == ',') {\r | |
217 | return RETURN_INVALID_PARAMETER;\r | |
218 | }\r | |
ac0a286f | 219 | \r |
6b40e66a RN |
220 | if (Entry < *NumResults) {\r |
221 | Result[Entry] = EntryVal;\r | |
ac0a286f | 222 | Status = RETURN_SUCCESS;\r |
6b40e66a RN |
223 | } else {\r |
224 | Status = RETURN_BUFFER_TOO_SMALL;\r | |
225 | }\r | |
ac0a286f | 226 | \r |
6b40e66a RN |
227 | ++Entry;\r |
228 | \r | |
229 | *NumResults = Entry;\r | |
230 | return Status;\r | |
231 | }\r | |
232 | \r | |
6b40e66a RN |
233 | /**\r |
234 | A simple array of Boot Option ID's.\r | |
235 | **/\r | |
236 | typedef struct {\r | |
ac0a286f MK |
237 | UINT16 *Data;\r |
238 | UINTN Allocated;\r | |
239 | UINTN Produced;\r | |
6b40e66a RN |
240 | } BOOT_ORDER;\r |
241 | \r | |
6b40e66a RN |
242 | /**\r |
243 | Array element tracking an enumerated boot option that has the\r | |
244 | LOAD_OPTION_ACTIVE attribute.\r | |
245 | **/\r | |
246 | typedef struct {\r | |
ac0a286f MK |
247 | CONST EFI_BOOT_MANAGER_LOAD_OPTION *BootOption; // reference only, no\r |
248 | // ownership\r | |
249 | BOOLEAN Appended; // has been added to a\r | |
250 | // BOOT_ORDER?\r | |
6b40e66a RN |
251 | } ACTIVE_OPTION;\r |
252 | \r | |
6b40e66a RN |
253 | /**\r |
254 | \r | |
255 | Append an active boot option to BootOrder, reallocating the latter if needed.\r | |
256 | \r | |
257 | @param[in out] BootOrder The structure pointing to the array and holding\r | |
258 | allocation and usage counters.\r | |
259 | \r | |
260 | @param[in] ActiveOption The active boot option whose ID should be\r | |
261 | appended to the array.\r | |
262 | \r | |
263 | \r | |
264 | @retval RETURN_SUCCESS ID of ActiveOption appended.\r | |
265 | \r | |
266 | @retval RETURN_OUT_OF_RESOURCES Memory reallocation failed.\r | |
267 | \r | |
268 | **/\r | |
269 | STATIC\r | |
270 | RETURN_STATUS\r | |
271 | BootOrderAppend (\r | |
ac0a286f MK |
272 | IN OUT BOOT_ORDER *BootOrder,\r |
273 | IN OUT ACTIVE_OPTION *ActiveOption\r | |
6b40e66a RN |
274 | )\r |
275 | {\r | |
276 | if (BootOrder->Produced == BootOrder->Allocated) {\r | |
ac0a286f MK |
277 | UINTN AllocatedNew;\r |
278 | UINT16 *DataNew;\r | |
6b40e66a RN |
279 | \r |
280 | ASSERT (BootOrder->Allocated > 0);\r | |
281 | AllocatedNew = BootOrder->Allocated * 2;\r | |
ac0a286f MK |
282 | DataNew = ReallocatePool (\r |
283 | BootOrder->Allocated * sizeof (*BootOrder->Data),\r | |
284 | AllocatedNew * sizeof (*DataNew),\r | |
285 | BootOrder->Data\r | |
286 | );\r | |
6b40e66a RN |
287 | if (DataNew == NULL) {\r |
288 | return RETURN_OUT_OF_RESOURCES;\r | |
289 | }\r | |
ac0a286f | 290 | \r |
6b40e66a RN |
291 | BootOrder->Allocated = AllocatedNew;\r |
292 | BootOrder->Data = DataNew;\r | |
293 | }\r | |
294 | \r | |
295 | BootOrder->Data[BootOrder->Produced++] =\r | |
ac0a286f | 296 | (UINT16)ActiveOption->BootOption->OptionNumber;\r |
6b40e66a RN |
297 | ActiveOption->Appended = TRUE;\r |
298 | return RETURN_SUCCESS;\r | |
299 | }\r | |
300 | \r | |
6b40e66a RN |
301 | /**\r |
302 | \r | |
d27ec22d | 303 | Create an array of ACTIVE_OPTION elements for a boot option array.\r |
6b40e66a | 304 | \r |
d27ec22d RN |
305 | @param[in] BootOptions A boot option array, created with\r |
306 | EfiBootManagerRefreshAllBootOption () and\r | |
307 | EfiBootManagerGetLoadOptions ().\r | |
6b40e66a | 308 | \r |
d27ec22d | 309 | @param[in] BootOptionCount The number of elements in BootOptions.\r |
6b40e66a | 310 | \r |
d27ec22d RN |
311 | @param[out] ActiveOption Pointer to the first element in the new array.\r |
312 | The caller is responsible for freeing the array\r | |
313 | with FreePool() after use.\r | |
314 | \r | |
315 | @param[out] Count Number of elements in the new array.\r | |
6b40e66a RN |
316 | \r |
317 | \r | |
318 | @retval RETURN_SUCCESS The ActiveOption array has been created.\r | |
319 | \r | |
320 | @retval RETURN_NOT_FOUND No active entry has been found in\r | |
d27ec22d | 321 | BootOptions.\r |
6b40e66a RN |
322 | \r |
323 | @retval RETURN_OUT_OF_RESOURCES Memory allocation failed.\r | |
324 | \r | |
325 | **/\r | |
326 | STATIC\r | |
327 | RETURN_STATUS\r | |
328 | CollectActiveOptions (\r | |
ac0a286f MK |
329 | IN CONST EFI_BOOT_MANAGER_LOAD_OPTION *BootOptions,\r |
330 | IN UINTN BootOptionCount,\r | |
331 | OUT ACTIVE_OPTION **ActiveOption,\r | |
332 | OUT UINTN *Count\r | |
6b40e66a RN |
333 | )\r |
334 | {\r | |
ac0a286f MK |
335 | UINTN Index;\r |
336 | UINTN ScanMode;\r | |
6b40e66a RN |
337 | \r |
338 | *ActiveOption = NULL;\r | |
339 | \r | |
340 | //\r | |
341 | // Scan the list twice:\r | |
342 | // - count active entries,\r | |
343 | // - store links to active entries.\r | |
344 | //\r | |
345 | for (ScanMode = 0; ScanMode < 2; ++ScanMode) {\r | |
6b40e66a | 346 | *Count = 0;\r |
d27ec22d RN |
347 | for (Index = 0; Index < BootOptionCount; Index++) {\r |
348 | if ((BootOptions[Index].Attributes & LOAD_OPTION_ACTIVE) != 0) {\r | |
6b40e66a | 349 | if (ScanMode == 1) {\r |
d27ec22d | 350 | (*ActiveOption)[*Count].BootOption = &BootOptions[Index];\r |
6b40e66a RN |
351 | (*ActiveOption)[*Count].Appended = FALSE;\r |
352 | }\r | |
ac0a286f | 353 | \r |
6b40e66a RN |
354 | ++*Count;\r |
355 | }\r | |
6b40e66a RN |
356 | }\r |
357 | \r | |
358 | if (ScanMode == 0) {\r | |
359 | if (*Count == 0) {\r | |
360 | return RETURN_NOT_FOUND;\r | |
361 | }\r | |
ac0a286f | 362 | \r |
6b40e66a RN |
363 | *ActiveOption = AllocatePool (*Count * sizeof **ActiveOption);\r |
364 | if (*ActiveOption == NULL) {\r | |
365 | return RETURN_OUT_OF_RESOURCES;\r | |
366 | }\r | |
367 | }\r | |
368 | }\r | |
ac0a286f | 369 | \r |
6b40e66a RN |
370 | return RETURN_SUCCESS;\r |
371 | }\r | |
372 | \r | |
6b40e66a RN |
373 | /**\r |
374 | OpenFirmware device path node\r | |
375 | **/\r | |
376 | typedef struct {\r | |
ac0a286f MK |
377 | SUBSTRING DriverName;\r |
378 | SUBSTRING UnitAddress;\r | |
379 | SUBSTRING DeviceArguments;\r | |
6b40e66a RN |
380 | } OFW_NODE;\r |
381 | \r | |
6b40e66a RN |
382 | /**\r |
383 | \r | |
384 | Parse an OpenFirmware device path node into the caller-allocated OFW_NODE\r | |
385 | structure, and advance in the input string.\r | |
386 | \r | |
387 | The node format is mostly parsed after IEEE 1275-1994, 3.2.1.1 "Node names"\r | |
388 | (a leading slash is expected and not returned):\r | |
389 | \r | |
390 | /driver-name@unit-address[:device-arguments][<LF>]\r | |
391 | \r | |
392 | A single trailing <LF> character is consumed but not returned. A trailing\r | |
393 | <LF> or NUL character terminates the device path.\r | |
394 | \r | |
395 | The function relies on ASCII encoding.\r | |
396 | \r | |
397 | @param[in out] Ptr Address of the pointer pointing to the start of the\r | |
398 | node string. After successful parsing *Ptr is set to\r | |
399 | the byte immediately following the consumed\r | |
400 | characters. On error it points to the byte that\r | |
401 | caused the error. The input string is never modified.\r | |
402 | \r | |
403 | @param[out] OfwNode The members of this structure point into the input\r | |
404 | string, designating components of the node.\r | |
405 | Separators are never included. If "device-arguments"\r | |
406 | is missing, then DeviceArguments.Ptr is set to NULL.\r | |
407 | All components that are present have nonzero length.\r | |
408 | \r | |
409 | If the call doesn't succeed, the contents of this\r | |
410 | structure is indeterminate.\r | |
411 | \r | |
a2e75595 | 412 | @param[out] IsFinal In case of successful parsing, this parameter signals\r |
6b40e66a RN |
413 | whether the node just parsed is the final node in the\r |
414 | device path. The call after a final node will attempt\r | |
415 | to start parsing the next path. If the call doesn't\r | |
416 | succeed, then this parameter is not changed.\r | |
417 | \r | |
418 | \r | |
419 | @retval RETURN_SUCCESS Parsing successful.\r | |
420 | \r | |
421 | @retval RETURN_NOT_FOUND Parsing terminated. *Ptr was (and is)\r | |
422 | pointing to an empty string.\r | |
423 | \r | |
424 | @retval RETURN_INVALID_PARAMETER Parse error.\r | |
425 | \r | |
426 | **/\r | |
427 | STATIC\r | |
428 | RETURN_STATUS\r | |
429 | ParseOfwNode (\r | |
ac0a286f MK |
430 | IN OUT CONST CHAR8 **Ptr,\r |
431 | OUT OFW_NODE *OfwNode,\r | |
432 | OUT BOOLEAN *IsFinal\r | |
6b40e66a RN |
433 | )\r |
434 | {\r | |
d63242bd GH |
435 | BOOLEAN AcceptSlash = FALSE;\r |
436 | \r | |
6b40e66a RN |
437 | //\r |
438 | // A leading slash is expected. End of string is tolerated.\r | |
439 | //\r | |
440 | switch (**Ptr) {\r | |
ac0a286f MK |
441 | case '\0':\r |
442 | return RETURN_NOT_FOUND;\r | |
6b40e66a | 443 | \r |
ac0a286f MK |
444 | case '/':\r |
445 | ++*Ptr;\r | |
446 | break;\r | |
6b40e66a | 447 | \r |
ac0a286f MK |
448 | default:\r |
449 | return RETURN_INVALID_PARAMETER;\r | |
6b40e66a RN |
450 | }\r |
451 | \r | |
452 | //\r | |
453 | // driver-name\r | |
454 | //\r | |
455 | OfwNode->DriverName.Ptr = *Ptr;\r | |
456 | OfwNode->DriverName.Len = 0;\r | |
457 | while (OfwNode->DriverName.Len < 32 &&\r | |
458 | (IsAlnum (**Ptr) || IsDriverNamePunct (**Ptr))\r | |
ac0a286f MK |
459 | )\r |
460 | {\r | |
6b40e66a RN |
461 | ++*Ptr;\r |
462 | ++OfwNode->DriverName.Len;\r | |
463 | }\r | |
464 | \r | |
ac0a286f | 465 | if ((OfwNode->DriverName.Len == 0) || (OfwNode->DriverName.Len == 32)) {\r |
6b40e66a RN |
466 | return RETURN_INVALID_PARAMETER;\r |
467 | }\r | |
468 | \r | |
d63242bd GH |
469 | if (SubstringEq (OfwNode->DriverName, "rom")) {\r |
470 | //\r | |
471 | // bug compatibility hack\r | |
472 | //\r | |
473 | // qemu passes fw_cfg filenames as rom unit address.\r | |
474 | // The filenames have slashes:\r | |
475 | // /rom@genroms/linuxboot_dma.bin\r | |
476 | //\r | |
477 | // Alow slashes in the unit address to avoid the parser trip up,\r | |
478 | // so we can successfully parse the following lines (the rom\r | |
479 | // entries themself are ignored).\r | |
480 | //\r | |
481 | AcceptSlash = TRUE;\r | |
482 | }\r | |
483 | \r | |
6b40e66a RN |
484 | //\r |
485 | // unit-address\r | |
486 | //\r | |
487 | if (**Ptr != '@') {\r | |
488 | return RETURN_INVALID_PARAMETER;\r | |
489 | }\r | |
ac0a286f | 490 | \r |
6b40e66a RN |
491 | ++*Ptr;\r |
492 | \r | |
493 | OfwNode->UnitAddress.Ptr = *Ptr;\r | |
494 | OfwNode->UnitAddress.Len = 0;\r | |
d63242bd | 495 | while (IsPrintNotDelim (**Ptr) || (AcceptSlash && **Ptr == '/')) {\r |
6b40e66a RN |
496 | ++*Ptr;\r |
497 | ++OfwNode->UnitAddress.Len;\r | |
498 | }\r | |
499 | \r | |
500 | if (OfwNode->UnitAddress.Len == 0) {\r | |
501 | return RETURN_INVALID_PARAMETER;\r | |
502 | }\r | |
503 | \r | |
6b40e66a RN |
504 | //\r |
505 | // device-arguments, may be omitted\r | |
506 | //\r | |
507 | OfwNode->DeviceArguments.Len = 0;\r | |
508 | if (**Ptr == ':') {\r | |
509 | ++*Ptr;\r | |
510 | OfwNode->DeviceArguments.Ptr = *Ptr;\r | |
511 | \r | |
512 | while (IsPrintNotDelim (**Ptr)) {\r | |
513 | ++*Ptr;\r | |
514 | ++OfwNode->DeviceArguments.Len;\r | |
515 | }\r | |
516 | \r | |
517 | if (OfwNode->DeviceArguments.Len == 0) {\r | |
518 | return RETURN_INVALID_PARAMETER;\r | |
519 | }\r | |
ac0a286f | 520 | } else {\r |
6b40e66a RN |
521 | OfwNode->DeviceArguments.Ptr = NULL;\r |
522 | }\r | |
523 | \r | |
524 | switch (**Ptr) {\r | |
ac0a286f MK |
525 | case '\n':\r |
526 | ++*Ptr;\r | |
6b40e66a RN |
527 | //\r |
528 | // fall through\r | |
529 | //\r | |
530 | \r | |
ac0a286f MK |
531 | case '\0':\r |
532 | *IsFinal = TRUE;\r | |
533 | break;\r | |
6b40e66a | 534 | \r |
ac0a286f MK |
535 | case '/':\r |
536 | *IsFinal = FALSE;\r | |
537 | break;\r | |
6b40e66a | 538 | \r |
ac0a286f MK |
539 | default:\r |
540 | return RETURN_INVALID_PARAMETER;\r | |
6b40e66a RN |
541 | }\r |
542 | \r | |
543 | DEBUG ((\r | |
544 | DEBUG_VERBOSE,\r | |
545 | "%a: DriverName=\"%.*a\" UnitAddress=\"%.*a\" DeviceArguments=\"%.*a\"\n",\r | |
546 | __FUNCTION__,\r | |
ac0a286f MK |
547 | OfwNode->DriverName.Len,\r |
548 | OfwNode->DriverName.Ptr,\r | |
549 | OfwNode->UnitAddress.Len,\r | |
550 | OfwNode->UnitAddress.Ptr,\r | |
6b40e66a RN |
551 | OfwNode->DeviceArguments.Len,\r |
552 | OfwNode->DeviceArguments.Ptr == NULL ? "" : OfwNode->DeviceArguments.Ptr\r | |
553 | ));\r | |
554 | return RETURN_SUCCESS;\r | |
555 | }\r | |
556 | \r | |
6b40e66a RN |
557 | /**\r |
558 | \r | |
559 | Translate a PCI-like array of OpenFirmware device nodes to a UEFI device path\r | |
560 | fragment.\r | |
561 | \r | |
562 | @param[in] OfwNode Array of OpenFirmware device nodes to\r | |
563 | translate, constituting the beginning of an\r | |
564 | OpenFirmware device path.\r | |
565 | \r | |
566 | @param[in] NumNodes Number of elements in OfwNode.\r | |
567 | \r | |
568 | @param[in] ExtraPciRoots An EXTRA_ROOT_BUS_MAP object created with\r | |
569 | CreateExtraRootBusMap(), to be used for\r | |
570 | translating positions of extra root buses to\r | |
571 | bus numbers.\r | |
572 | \r | |
573 | @param[out] Translated Destination array receiving the UEFI path\r | |
574 | fragment, allocated by the caller. If the\r | |
575 | return value differs from RETURN_SUCCESS, its\r | |
576 | contents is indeterminate.\r | |
577 | \r | |
578 | @param[in out] TranslatedSize On input, the number of CHAR16's in\r | |
579 | Translated. On RETURN_SUCCESS this parameter\r | |
580 | is assigned the number of non-NUL CHAR16's\r | |
581 | written to Translated. In case of other return\r | |
582 | values, TranslatedSize is indeterminate.\r | |
583 | \r | |
584 | \r | |
585 | @retval RETURN_SUCCESS Translation successful.\r | |
586 | \r | |
587 | @retval RETURN_BUFFER_TOO_SMALL The translation does not fit into the number\r | |
588 | of bytes provided.\r | |
589 | \r | |
590 | @retval RETURN_UNSUPPORTED The array of OpenFirmware device nodes can't\r | |
591 | be translated in the current implementation.\r | |
592 | \r | |
593 | @retval RETURN_PROTOCOL_ERROR The initial OpenFirmware node refers to an\r | |
594 | extra PCI root bus (by serial number) that\r | |
595 | is invalid according to ExtraPciRoots.\r | |
596 | \r | |
597 | **/\r | |
598 | STATIC\r | |
599 | RETURN_STATUS\r | |
600 | TranslatePciOfwNodes (\r | |
ac0a286f MK |
601 | IN CONST OFW_NODE *OfwNode,\r |
602 | IN UINTN NumNodes,\r | |
603 | IN CONST EXTRA_ROOT_BUS_MAP *ExtraPciRoots,\r | |
604 | OUT CHAR16 *Translated,\r | |
605 | IN OUT UINTN *TranslatedSize\r | |
6b40e66a RN |
606 | )\r |
607 | {\r | |
ac0a286f MK |
608 | UINT32 PciRoot;\r |
609 | CHAR8 *Comma;\r | |
610 | UINTN FirstNonBridge;\r | |
611 | CHAR16 Bridges[BRIDGE_TRANSLATION_OUTPUT_SIZE];\r | |
612 | UINTN BridgesLen;\r | |
613 | UINT64 PciDevFun[2];\r | |
614 | UINTN NumEntries;\r | |
615 | UINTN Written;\r | |
6b40e66a RN |
616 | \r |
617 | //\r | |
618 | // Resolve the PCI root bus number.\r | |
619 | //\r | |
620 | // The initial OFW node for the main root bus (ie. bus number 0) is:\r | |
621 | //\r | |
622 | // /pci@i0cf8\r | |
623 | //\r | |
624 | // For extra root buses, the initial OFW node is\r | |
625 | //\r | |
626 | // /pci@i0cf8,4\r | |
627 | // ^\r | |
628 | // root bus serial number (not PCI bus number)\r | |
629 | //\r | |
ac0a286f | 630 | if ((NumNodes < REQUIRED_PCI_OFW_NODES) ||\r |
6b40e66a | 631 | !SubstringEq (OfwNode[0].DriverName, "pci")\r |
ac0a286f MK |
632 | )\r |
633 | {\r | |
6b40e66a RN |
634 | return RETURN_UNSUPPORTED;\r |
635 | }\r | |
636 | \r | |
637 | PciRoot = 0;\r | |
ac0a286f MK |
638 | Comma = ScanMem8 (\r |
639 | OfwNode[0].UnitAddress.Ptr,\r | |
640 | OfwNode[0].UnitAddress.Len,\r | |
641 | ','\r | |
642 | );\r | |
6b40e66a | 643 | if (Comma != NULL) {\r |
ac0a286f MK |
644 | SUBSTRING PciRootSerialSubString;\r |
645 | UINT64 PciRootSerial;\r | |
6b40e66a RN |
646 | \r |
647 | //\r | |
648 | // Parse the root bus serial number from the unit address after the comma.\r | |
649 | //\r | |
650 | PciRootSerialSubString.Ptr = Comma + 1;\r | |
651 | PciRootSerialSubString.Len = OfwNode[0].UnitAddress.Len -\r | |
652 | (PciRootSerialSubString.Ptr -\r | |
653 | OfwNode[0].UnitAddress.Ptr);\r | |
654 | NumEntries = 1;\r | |
ac0a286f MK |
655 | if (RETURN_ERROR (\r |
656 | ParseUnitAddressHexList (\r | |
657 | PciRootSerialSubString,\r | |
658 | &PciRootSerial,\r | |
659 | &NumEntries\r | |
660 | )\r | |
661 | ))\r | |
662 | {\r | |
6b40e66a RN |
663 | return RETURN_UNSUPPORTED;\r |
664 | }\r | |
665 | \r | |
666 | //\r | |
667 | // Map the extra root bus's serial number to its actual bus number.\r | |
668 | //\r | |
ac0a286f MK |
669 | if (EFI_ERROR (\r |
670 | MapRootBusPosToBusNr (\r | |
671 | ExtraPciRoots,\r | |
672 | PciRootSerial,\r | |
673 | &PciRoot\r | |
674 | )\r | |
675 | ))\r | |
676 | {\r | |
6b40e66a RN |
677 | return RETURN_PROTOCOL_ERROR;\r |
678 | }\r | |
679 | }\r | |
680 | \r | |
681 | //\r | |
682 | // Translate a sequence of PCI bridges. For each bridge, the OFW node is:\r | |
683 | //\r | |
684 | // pci-bridge@1e[,0]\r | |
685 | // ^ ^\r | |
686 | // PCI slot & function on the parent, holding the bridge\r | |
687 | //\r | |
688 | // and the UEFI device path node is:\r | |
689 | //\r | |
690 | // Pci(0x1E,0x0)\r | |
691 | //\r | |
692 | FirstNonBridge = 1;\r | |
ac0a286f MK |
693 | Bridges[0] = L'\0';\r |
694 | BridgesLen = 0;\r | |
6b40e66a | 695 | do {\r |
ac0a286f MK |
696 | UINT64 BridgeDevFun[2];\r |
697 | UINTN BridgesFreeBytes;\r | |
6b40e66a RN |
698 | \r |
699 | if (!SubstringEq (OfwNode[FirstNonBridge].DriverName, "pci-bridge")) {\r | |
700 | break;\r | |
701 | }\r | |
702 | \r | |
703 | BridgeDevFun[1] = 0;\r | |
ac0a286f MK |
704 | NumEntries = sizeof BridgeDevFun / sizeof BridgeDevFun[0];\r |
705 | if (ParseUnitAddressHexList (\r | |
706 | OfwNode[FirstNonBridge].UnitAddress,\r | |
707 | BridgeDevFun,\r | |
708 | &NumEntries\r | |
709 | ) != RETURN_SUCCESS)\r | |
710 | {\r | |
6b40e66a RN |
711 | return RETURN_UNSUPPORTED;\r |
712 | }\r | |
713 | \r | |
714 | BridgesFreeBytes = sizeof Bridges - BridgesLen * sizeof Bridges[0];\r | |
ac0a286f MK |
715 | Written = UnicodeSPrintAsciiFormat (\r |
716 | Bridges + BridgesLen,\r | |
717 | BridgesFreeBytes,\r | |
718 | "/Pci(0x%Lx,0x%Lx)",\r | |
719 | BridgeDevFun[0],\r | |
720 | BridgeDevFun[1]\r | |
721 | );\r | |
6b40e66a RN |
722 | BridgesLen += Written;\r |
723 | \r | |
724 | //\r | |
725 | // There's no way to differentiate between "completely used up without\r | |
726 | // truncation" and "truncated", so treat the former as the latter.\r | |
727 | //\r | |
728 | if (BridgesLen + 1 == BRIDGE_TRANSLATION_OUTPUT_SIZE) {\r | |
729 | return RETURN_UNSUPPORTED;\r | |
730 | }\r | |
731 | \r | |
732 | ++FirstNonBridge;\r | |
733 | } while (FirstNonBridge < NumNodes);\r | |
734 | \r | |
735 | if (FirstNonBridge == NumNodes) {\r | |
736 | return RETURN_UNSUPPORTED;\r | |
737 | }\r | |
738 | \r | |
739 | //\r | |
740 | // Parse the OFW nodes starting with the first non-bridge node.\r | |
741 | //\r | |
742 | PciDevFun[1] = 0;\r | |
ac0a286f | 743 | NumEntries = ARRAY_SIZE (PciDevFun);\r |
6b40e66a RN |
744 | if (ParseUnitAddressHexList (\r |
745 | OfwNode[FirstNonBridge].UnitAddress,\r | |
746 | PciDevFun,\r | |
747 | &NumEntries\r | |
748 | ) != RETURN_SUCCESS\r | |
ac0a286f MK |
749 | )\r |
750 | {\r | |
6b40e66a RN |
751 | return RETURN_UNSUPPORTED;\r |
752 | }\r | |
753 | \r | |
ac0a286f | 754 | if ((NumNodes >= FirstNonBridge + 3) &&\r |
6b40e66a RN |
755 | SubstringEq (OfwNode[FirstNonBridge + 0].DriverName, "ide") &&\r |
756 | SubstringEq (OfwNode[FirstNonBridge + 1].DriverName, "drive") &&\r | |
757 | SubstringEq (OfwNode[FirstNonBridge + 2].DriverName, "disk")\r | |
ac0a286f MK |
758 | )\r |
759 | {\r | |
6b40e66a RN |
760 | //\r |
761 | // OpenFirmware device path (IDE disk, IDE CD-ROM):\r | |
762 | //\r | |
763 | // /pci@i0cf8/ide@1,1/drive@0/disk@0\r | |
764 | // ^ ^ ^ ^ ^\r | |
765 | // | | | | master or slave\r | |
766 | // | | | primary or secondary\r | |
767 | // | PCI slot & function holding IDE controller\r | |
768 | // PCI root at system bus port, PIO\r | |
769 | //\r | |
770 | // UEFI device path:\r | |
771 | //\r | |
772 | // PciRoot(0x0)/Pci(0x1,0x1)/Ata(Primary,Master,0x0)\r | |
773 | // ^\r | |
774 | // fixed LUN\r | |
775 | //\r | |
ac0a286f MK |
776 | UINT64 Secondary;\r |
777 | UINT64 Slave;\r | |
6b40e66a RN |
778 | \r |
779 | NumEntries = 1;\r | |
ac0a286f MK |
780 | if ((ParseUnitAddressHexList (\r |
781 | OfwNode[FirstNonBridge + 1].UnitAddress,\r | |
782 | &Secondary,\r | |
783 | &NumEntries\r | |
784 | ) != RETURN_SUCCESS) ||\r | |
785 | (Secondary > 1) ||\r | |
786 | (ParseUnitAddressHexList (\r | |
787 | OfwNode[FirstNonBridge + 2].UnitAddress,\r | |
788 | &Slave,\r | |
789 | &NumEntries // reuse after previous single-element call\r | |
790 | ) != RETURN_SUCCESS) ||\r | |
791 | (Slave > 1)\r | |
792 | )\r | |
793 | {\r | |
6b40e66a RN |
794 | return RETURN_UNSUPPORTED;\r |
795 | }\r | |
796 | \r | |
797 | Written = UnicodeSPrintAsciiFormat (\r | |
ac0a286f MK |
798 | Translated,\r |
799 | *TranslatedSize * sizeof (*Translated), // BufferSize in bytes\r | |
800 | "PciRoot(0x%x)%s/Pci(0x%Lx,0x%Lx)/Ata(%a,%a,0x0)",\r | |
801 | PciRoot,\r | |
802 | Bridges,\r | |
803 | PciDevFun[0],\r | |
804 | PciDevFun[1],\r | |
805 | Secondary ? "Secondary" : "Primary",\r | |
806 | Slave ? "Slave" : "Master"\r | |
807 | );\r | |
808 | } else if ((NumNodes >= FirstNonBridge + 3) &&\r | |
809 | SubstringEq (OfwNode[FirstNonBridge + 0].DriverName, "pci8086,2922") &&\r | |
810 | SubstringEq (OfwNode[FirstNonBridge + 1].DriverName, "drive") &&\r | |
811 | SubstringEq (OfwNode[FirstNonBridge + 2].DriverName, "disk")\r | |
812 | )\r | |
813 | {\r | |
6b40e66a RN |
814 | //\r |
815 | // OpenFirmware device path (Q35 SATA disk and CD-ROM):\r | |
816 | //\r | |
817 | // /pci@i0cf8/pci8086,2922@1f,2/drive@1/disk@0\r | |
818 | // ^ ^ ^ ^ ^\r | |
819 | // | | | | device number (fixed 0)\r | |
820 | // | | | channel (port) number\r | |
821 | // | PCI slot & function holding SATA HBA\r | |
822 | // PCI root at system bus port, PIO\r | |
823 | //\r | |
824 | // UEFI device path:\r | |
825 | //\r | |
d5aee61b LE |
826 | // PciRoot(0x0)/Pci(0x1F,0x2)/Sata(0x1,0xFFFF,0x0)\r |
827 | // ^ ^ ^\r | |
828 | // | | LUN (always 0 on Q35)\r | |
6b40e66a | 829 | // | port multiplier port number,\r |
d5aee61b | 830 | // | always 0xFFFF on Q35\r |
6b40e66a RN |
831 | // channel (port) number\r |
832 | //\r | |
ac0a286f | 833 | UINT64 Channel;\r |
6b40e66a RN |
834 | \r |
835 | NumEntries = 1;\r | |
ac0a286f MK |
836 | if (RETURN_ERROR (\r |
837 | ParseUnitAddressHexList (\r | |
838 | OfwNode[FirstNonBridge + 1].UnitAddress,\r | |
839 | &Channel,\r | |
840 | &NumEntries\r | |
841 | )\r | |
842 | ))\r | |
843 | {\r | |
6b40e66a RN |
844 | return RETURN_UNSUPPORTED;\r |
845 | }\r | |
846 | \r | |
847 | Written = UnicodeSPrintAsciiFormat (\r | |
ac0a286f MK |
848 | Translated,\r |
849 | *TranslatedSize * sizeof (*Translated), // BufferSize in bytes\r | |
850 | "PciRoot(0x%x)%s/Pci(0x%Lx,0x%Lx)/Sata(0x%Lx,0xFFFF,0x0)",\r | |
851 | PciRoot,\r | |
852 | Bridges,\r | |
853 | PciDevFun[0],\r | |
854 | PciDevFun[1],\r | |
855 | Channel\r | |
856 | );\r | |
857 | } else if ((NumNodes >= FirstNonBridge + 3) &&\r | |
6b40e66a RN |
858 | SubstringEq (OfwNode[FirstNonBridge + 0].DriverName, "isa") &&\r |
859 | SubstringEq (OfwNode[FirstNonBridge + 1].DriverName, "fdc") &&\r | |
860 | SubstringEq (OfwNode[FirstNonBridge + 2].DriverName, "floppy")\r | |
ac0a286f MK |
861 | )\r |
862 | {\r | |
6b40e66a RN |
863 | //\r |
864 | // OpenFirmware device path (floppy disk):\r | |
865 | //\r | |
866 | // /pci@i0cf8/isa@1/fdc@03f0/floppy@0\r | |
867 | // ^ ^ ^ ^\r | |
868 | // | | | A: or B:\r | |
869 | // | | ISA controller io-port (hex)\r | |
870 | // | PCI slot holding ISA controller\r | |
871 | // PCI root at system bus port, PIO\r | |
872 | //\r | |
873 | // UEFI device path:\r | |
874 | //\r | |
875 | // PciRoot(0x0)/Pci(0x1,0x0)/Floppy(0x0)\r | |
876 | // ^\r | |
877 | // ACPI UID\r | |
878 | //\r | |
ac0a286f | 879 | UINT64 AcpiUid;\r |
6b40e66a RN |
880 | \r |
881 | NumEntries = 1;\r | |
ac0a286f MK |
882 | if ((ParseUnitAddressHexList (\r |
883 | OfwNode[FirstNonBridge + 2].UnitAddress,\r | |
884 | &AcpiUid,\r | |
885 | &NumEntries\r | |
886 | ) != RETURN_SUCCESS) ||\r | |
887 | (AcpiUid > 1)\r | |
888 | )\r | |
889 | {\r | |
6b40e66a RN |
890 | return RETURN_UNSUPPORTED;\r |
891 | }\r | |
892 | \r | |
893 | Written = UnicodeSPrintAsciiFormat (\r | |
ac0a286f MK |
894 | Translated,\r |
895 | *TranslatedSize * sizeof (*Translated), // BufferSize in bytes\r | |
896 | "PciRoot(0x%x)%s/Pci(0x%Lx,0x%Lx)/Floppy(0x%Lx)",\r | |
897 | PciRoot,\r | |
898 | Bridges,\r | |
899 | PciDevFun[0],\r | |
900 | PciDevFun[1],\r | |
901 | AcpiUid\r | |
902 | );\r | |
903 | } else if ((NumNodes >= FirstNonBridge + 2) &&\r | |
6b40e66a RN |
904 | SubstringEq (OfwNode[FirstNonBridge + 0].DriverName, "scsi") &&\r |
905 | SubstringEq (OfwNode[FirstNonBridge + 1].DriverName, "disk")\r | |
ac0a286f MK |
906 | )\r |
907 | {\r | |
6b40e66a RN |
908 | //\r |
909 | // OpenFirmware device path (virtio-blk disk):\r | |
910 | //\r | |
911 | // /pci@i0cf8/scsi@6[,3]/disk@0,0\r | |
912 | // ^ ^ ^ ^ ^\r | |
913 | // | | | fixed\r | |
914 | // | | PCI function corresponding to disk (optional)\r | |
915 | // | PCI slot holding disk\r | |
916 | // PCI root at system bus port, PIO\r | |
917 | //\r | |
918 | // UEFI device path prefix:\r | |
919 | //\r | |
d796d33f LE |
920 | // PciRoot(0x0)/Pci(0x6,0x0) -- if PCI function is 0 or absent\r |
921 | // PciRoot(0x0)/Pci(0x6,0x3) -- if PCI function is present and nonzero\r | |
6b40e66a RN |
922 | //\r |
923 | Written = UnicodeSPrintAsciiFormat (\r | |
ac0a286f MK |
924 | Translated,\r |
925 | *TranslatedSize * sizeof (*Translated), // BufferSize in bytes\r | |
926 | "PciRoot(0x%x)%s/Pci(0x%Lx,0x%Lx)",\r | |
927 | PciRoot,\r | |
928 | Bridges,\r | |
929 | PciDevFun[0],\r | |
930 | PciDevFun[1]\r | |
931 | );\r | |
932 | } else if ((NumNodes >= FirstNonBridge + 3) &&\r | |
6b40e66a RN |
933 | SubstringEq (OfwNode[FirstNonBridge + 0].DriverName, "scsi") &&\r |
934 | SubstringEq (OfwNode[FirstNonBridge + 1].DriverName, "channel") &&\r | |
935 | SubstringEq (OfwNode[FirstNonBridge + 2].DriverName, "disk")\r | |
ac0a286f MK |
936 | )\r |
937 | {\r | |
6b40e66a RN |
938 | //\r |
939 | // OpenFirmware device path (virtio-scsi disk):\r | |
940 | //\r | |
941 | // /pci@i0cf8/scsi@7[,3]/channel@0/disk@2,3\r | |
942 | // ^ ^ ^ ^ ^\r | |
943 | // | | | | LUN\r | |
944 | // | | | target\r | |
945 | // | | channel (unused, fixed 0)\r | |
946 | // | PCI slot[, function] holding SCSI controller\r | |
947 | // PCI root at system bus port, PIO\r | |
948 | //\r | |
949 | // UEFI device path prefix:\r | |
950 | //\r | |
951 | // PciRoot(0x0)/Pci(0x7,0x0)/Scsi(0x2,0x3)\r | |
952 | // -- if PCI function is 0 or absent\r | |
953 | // PciRoot(0x0)/Pci(0x7,0x3)/Scsi(0x2,0x3)\r | |
954 | // -- if PCI function is present and nonzero\r | |
955 | //\r | |
ac0a286f | 956 | UINT64 TargetLun[2];\r |
6b40e66a RN |
957 | \r |
958 | TargetLun[1] = 0;\r | |
ac0a286f | 959 | NumEntries = ARRAY_SIZE (TargetLun);\r |
6b40e66a RN |
960 | if (ParseUnitAddressHexList (\r |
961 | OfwNode[FirstNonBridge + 2].UnitAddress,\r | |
962 | TargetLun,\r | |
963 | &NumEntries\r | |
964 | ) != RETURN_SUCCESS\r | |
ac0a286f MK |
965 | )\r |
966 | {\r | |
6b40e66a RN |
967 | return RETURN_UNSUPPORTED;\r |
968 | }\r | |
969 | \r | |
970 | Written = UnicodeSPrintAsciiFormat (\r | |
ac0a286f MK |
971 | Translated,\r |
972 | *TranslatedSize * sizeof (*Translated), // BufferSize in bytes\r | |
973 | "PciRoot(0x%x)%s/Pci(0x%Lx,0x%Lx)/Scsi(0x%Lx,0x%Lx)",\r | |
974 | PciRoot,\r | |
975 | Bridges,\r | |
976 | PciDevFun[0],\r | |
977 | PciDevFun[1],\r | |
978 | TargetLun[0],\r | |
979 | TargetLun[1]\r | |
980 | );\r | |
981 | } else if ((NumNodes >= FirstNonBridge + 2) &&\r | |
982 | SubstringEq (OfwNode[FirstNonBridge + 0].DriverName, "pci8086,5845") &&\r | |
983 | SubstringEq (OfwNode[FirstNonBridge + 1].DriverName, "namespace")\r | |
984 | )\r | |
985 | {\r | |
6b40e66a RN |
986 | //\r |
987 | // OpenFirmware device path (NVMe device):\r | |
988 | //\r | |
989 | // /pci@i0cf8/pci8086,5845@6[,1]/namespace@1,0\r | |
990 | // ^ ^ ^ ^ ^\r | |
991 | // | | | | Extended Unique Identifier\r | |
992 | // | | | | (EUI-64), big endian interp.\r | |
993 | // | | | namespace ID\r | |
994 | // | PCI slot & function holding NVMe controller\r | |
995 | // PCI root at system bus port, PIO\r | |
996 | //\r | |
997 | // UEFI device path:\r | |
998 | //\r | |
999 | // PciRoot(0x0)/Pci(0x6,0x1)/NVMe(0x1,00-00-00-00-00-00-00-00)\r | |
1000 | // ^ ^\r | |
1001 | // | octets of the EUI-64\r | |
1002 | // | in address order\r | |
1003 | // namespace ID\r | |
1004 | //\r | |
ac0a286f MK |
1005 | UINT64 Namespace[2];\r |
1006 | UINTN RequiredEntries;\r | |
1007 | UINT8 *Eui64;\r | |
6b40e66a | 1008 | \r |
10a82f7f | 1009 | RequiredEntries = ARRAY_SIZE (Namespace);\r |
ac0a286f MK |
1010 | NumEntries = RequiredEntries;\r |
1011 | if ((ParseUnitAddressHexList (\r | |
1012 | OfwNode[FirstNonBridge + 1].UnitAddress,\r | |
1013 | Namespace,\r | |
1014 | &NumEntries\r | |
1015 | ) != RETURN_SUCCESS) ||\r | |
1016 | (NumEntries != RequiredEntries) ||\r | |
1017 | (Namespace[0] == 0) ||\r | |
1018 | (Namespace[0] >= MAX_UINT32)\r | |
1019 | )\r | |
1020 | {\r | |
6b40e66a RN |
1021 | return RETURN_UNSUPPORTED;\r |
1022 | }\r | |
1023 | \r | |
ac0a286f | 1024 | Eui64 = (UINT8 *)&Namespace[1];\r |
6b40e66a | 1025 | Written = UnicodeSPrintAsciiFormat (\r |
ac0a286f MK |
1026 | Translated,\r |
1027 | *TranslatedSize * sizeof (*Translated), // BufferSize in bytes\r | |
1028 | "PciRoot(0x%x)%s/Pci(0x%Lx,0x%Lx)/"\r | |
1029 | "NVMe(0x%Lx,%02x-%02x-%02x-%02x-%02x-%02x-%02x-%02x)",\r | |
1030 | PciRoot,\r | |
1031 | Bridges,\r | |
1032 | PciDevFun[0],\r | |
1033 | PciDevFun[1],\r | |
1034 | Namespace[0],\r | |
1035 | Eui64[7],\r | |
1036 | Eui64[6],\r | |
1037 | Eui64[5],\r | |
1038 | Eui64[4],\r | |
1039 | Eui64[3],\r | |
1040 | Eui64[2],\r | |
1041 | Eui64[1],\r | |
1042 | Eui64[0]\r | |
1043 | );\r | |
1044 | } else if ((NumNodes >= FirstNonBridge + 2) &&\r | |
f9c59fa4 | 1045 | SubstringEq (OfwNode[FirstNonBridge + 0].DriverName, "usb") &&\r |
ac0a286f MK |
1046 | SubstringEq (OfwNode[FirstNonBridge + 1].DriverName, "storage"))\r |
1047 | {\r | |
f9c59fa4 LE |
1048 | //\r |
1049 | // OpenFirmware device path (usb-storage device in XHCI port):\r | |
1050 | //\r | |
1051 | // /pci@i0cf8/usb@3[,1]/storage@2/channel@0/disk@0,0\r | |
1052 | // ^ ^ ^ ^ ^ ^ ^\r | |
1053 | // | | | | fixed fixed\r | |
1054 | // | | | XHCI port number, 1-based\r | |
1055 | // | | PCI function corresponding to XHCI (optional)\r | |
1056 | // | PCI slot holding XHCI\r | |
1057 | // PCI root at system bus port, PIO\r | |
1058 | //\r | |
1059 | // UEFI device path prefix:\r | |
1060 | //\r | |
1061 | // PciRoot(0x0)/Pci(0x3,0x1)/USB(0x1,0x0)\r | |
1062 | // ^ ^\r | |
1063 | // | XHCI port number in 0-based notation\r | |
1064 | // 0x0 if PCI function is 0, or absent from OFW\r | |
1065 | //\r | |
ac0a286f MK |
1066 | RETURN_STATUS ParseStatus;\r |
1067 | UINT64 OneBasedXhciPort;\r | |
f9c59fa4 | 1068 | \r |
ac0a286f | 1069 | NumEntries = 1;\r |
f9c59fa4 LE |
1070 | ParseStatus = ParseUnitAddressHexList (\r |
1071 | OfwNode[FirstNonBridge + 1].UnitAddress,\r | |
1072 | &OneBasedXhciPort,\r | |
1073 | &NumEntries\r | |
1074 | );\r | |
ac0a286f | 1075 | if (RETURN_ERROR (ParseStatus) || (OneBasedXhciPort == 0)) {\r |
f9c59fa4 LE |
1076 | return RETURN_UNSUPPORTED;\r |
1077 | }\r | |
1078 | \r | |
1079 | Written = UnicodeSPrintAsciiFormat (\r | |
1080 | Translated,\r | |
1081 | *TranslatedSize * sizeof (*Translated), // BufferSize in bytes\r | |
1082 | "PciRoot(0x%x)%s/Pci(0x%Lx,0x%Lx)/USB(0x%Lx,0x0)",\r | |
1083 | PciRoot,\r | |
1084 | Bridges,\r | |
1085 | PciDevFun[0],\r | |
1086 | PciDevFun[1],\r | |
1087 | OneBasedXhciPort - 1\r | |
1088 | );\r | |
6b40e66a RN |
1089 | } else {\r |
1090 | //\r | |
1091 | // Generic OpenFirmware device path for PCI devices:\r | |
1092 | //\r | |
1093 | // /pci@i0cf8/ethernet@3[,2]\r | |
1094 | // ^ ^\r | |
1095 | // | PCI slot[, function] holding Ethernet card\r | |
1096 | // PCI root at system bus port, PIO\r | |
1097 | //\r | |
1098 | // UEFI device path prefix (dependent on presence of nonzero PCI function):\r | |
1099 | //\r | |
1100 | // PciRoot(0x0)/Pci(0x3,0x0)\r | |
1101 | // PciRoot(0x0)/Pci(0x3,0x2)\r | |
1102 | //\r | |
1103 | Written = UnicodeSPrintAsciiFormat (\r | |
ac0a286f MK |
1104 | Translated,\r |
1105 | *TranslatedSize * sizeof (*Translated), // BufferSize in bytes\r | |
1106 | "PciRoot(0x%x)%s/Pci(0x%Lx,0x%Lx)",\r | |
1107 | PciRoot,\r | |
1108 | Bridges,\r | |
1109 | PciDevFun[0],\r | |
1110 | PciDevFun[1]\r | |
1111 | );\r | |
6b40e66a RN |
1112 | }\r |
1113 | \r | |
1114 | //\r | |
1115 | // There's no way to differentiate between "completely used up without\r | |
1116 | // truncation" and "truncated", so treat the former as the latter, and return\r | |
1117 | // success only for "some room left unused".\r | |
1118 | //\r | |
1119 | if (Written + 1 < *TranslatedSize) {\r | |
1120 | *TranslatedSize = Written;\r | |
1121 | return RETURN_SUCCESS;\r | |
1122 | }\r | |
1123 | \r | |
1124 | return RETURN_BUFFER_TOO_SMALL;\r | |
1125 | }\r | |
1126 | \r | |
6b40e66a RN |
1127 | //\r |
1128 | // A type providing easy raw access to the base address of a virtio-mmio\r | |
1129 | // transport.\r | |
1130 | //\r | |
1131 | typedef union {\r | |
ac0a286f MK |
1132 | UINT64 Uint64;\r |
1133 | UINT8 Raw[8];\r | |
6b40e66a RN |
1134 | } VIRTIO_MMIO_BASE_ADDRESS;\r |
1135 | \r | |
6b40e66a RN |
1136 | /**\r |
1137 | \r | |
1138 | Translate an MMIO-like array of OpenFirmware device nodes to a UEFI device\r | |
1139 | path fragment.\r | |
1140 | \r | |
1141 | @param[in] OfwNode Array of OpenFirmware device nodes to\r | |
1142 | translate, constituting the beginning of an\r | |
1143 | OpenFirmware device path.\r | |
1144 | \r | |
1145 | @param[in] NumNodes Number of elements in OfwNode.\r | |
1146 | \r | |
1147 | @param[out] Translated Destination array receiving the UEFI path\r | |
1148 | fragment, allocated by the caller. If the\r | |
1149 | return value differs from RETURN_SUCCESS, its\r | |
1150 | contents is indeterminate.\r | |
1151 | \r | |
1152 | @param[in out] TranslatedSize On input, the number of CHAR16's in\r | |
1153 | Translated. On RETURN_SUCCESS this parameter\r | |
1154 | is assigned the number of non-NUL CHAR16's\r | |
1155 | written to Translated. In case of other return\r | |
1156 | values, TranslatedSize is indeterminate.\r | |
1157 | \r | |
1158 | \r | |
1159 | @retval RETURN_SUCCESS Translation successful.\r | |
1160 | \r | |
1161 | @retval RETURN_BUFFER_TOO_SMALL The translation does not fit into the number\r | |
1162 | of bytes provided.\r | |
1163 | \r | |
1164 | @retval RETURN_UNSUPPORTED The array of OpenFirmware device nodes can't\r | |
1165 | be translated in the current implementation.\r | |
1166 | \r | |
1167 | **/\r | |
1168 | STATIC\r | |
1169 | RETURN_STATUS\r | |
1170 | TranslateMmioOfwNodes (\r | |
ac0a286f MK |
1171 | IN CONST OFW_NODE *OfwNode,\r |
1172 | IN UINTN NumNodes,\r | |
1173 | OUT CHAR16 *Translated,\r | |
1174 | IN OUT UINTN *TranslatedSize\r | |
6b40e66a RN |
1175 | )\r |
1176 | {\r | |
ac0a286f MK |
1177 | VIRTIO_MMIO_BASE_ADDRESS VirtioMmioBase;\r |
1178 | CHAR16 VenHwString[60 + 1];\r | |
1179 | UINTN NumEntries;\r | |
1180 | UINTN Written;\r | |
6b40e66a RN |
1181 | \r |
1182 | //\r | |
1183 | // Get the base address of the virtio-mmio transport.\r | |
1184 | //\r | |
ac0a286f | 1185 | if ((NumNodes < REQUIRED_MMIO_OFW_NODES) ||\r |
6b40e66a | 1186 | !SubstringEq (OfwNode[0].DriverName, "virtio-mmio")\r |
ac0a286f MK |
1187 | )\r |
1188 | {\r | |
6b40e66a RN |
1189 | return RETURN_UNSUPPORTED;\r |
1190 | }\r | |
ac0a286f | 1191 | \r |
6b40e66a RN |
1192 | NumEntries = 1;\r |
1193 | if (ParseUnitAddressHexList (\r | |
1194 | OfwNode[0].UnitAddress,\r | |
1195 | &VirtioMmioBase.Uint64,\r | |
1196 | &NumEntries\r | |
1197 | ) != RETURN_SUCCESS\r | |
ac0a286f MK |
1198 | )\r |
1199 | {\r | |
6b40e66a RN |
1200 | return RETURN_UNSUPPORTED;\r |
1201 | }\r | |
1202 | \r | |
ac0a286f MK |
1203 | UnicodeSPrintAsciiFormat (\r |
1204 | VenHwString,\r | |
1205 | sizeof VenHwString,\r | |
1206 | "VenHw(%g,%02X%02X%02X%02X%02X%02X%02X%02X)",\r | |
1207 | &gVirtioMmioTransportGuid,\r | |
1208 | VirtioMmioBase.Raw[0],\r | |
1209 | VirtioMmioBase.Raw[1],\r | |
1210 | VirtioMmioBase.Raw[2],\r | |
1211 | VirtioMmioBase.Raw[3],\r | |
1212 | VirtioMmioBase.Raw[4],\r | |
1213 | VirtioMmioBase.Raw[5],\r | |
1214 | VirtioMmioBase.Raw[6],\r | |
1215 | VirtioMmioBase.Raw[7]\r | |
1216 | );\r | |
1217 | \r | |
1218 | if ((NumNodes >= 2) &&\r | |
1219 | SubstringEq (OfwNode[1].DriverName, "disk"))\r | |
1220 | {\r | |
6b40e66a RN |
1221 | //\r |
1222 | // OpenFirmware device path (virtio-blk disk):\r | |
1223 | //\r | |
1224 | // /virtio-mmio@000000000a003c00/disk@0,0\r | |
1225 | // ^ ^ ^\r | |
1226 | // | fixed\r | |
1227 | // base address of virtio-mmio register block\r | |
1228 | //\r | |
1229 | // UEFI device path prefix:\r | |
1230 | //\r | |
d796d33f | 1231 | // <VenHwString>\r |
6b40e66a RN |
1232 | //\r |
1233 | Written = UnicodeSPrintAsciiFormat (\r | |
1234 | Translated,\r | |
1235 | *TranslatedSize * sizeof (*Translated), // BufferSize in bytes\r | |
d796d33f | 1236 | "%s",\r |
6b40e66a RN |
1237 | VenHwString\r |
1238 | );\r | |
ac0a286f | 1239 | } else if ((NumNodes >= 3) &&\r |
6b40e66a | 1240 | SubstringEq (OfwNode[1].DriverName, "channel") &&\r |
ac0a286f MK |
1241 | SubstringEq (OfwNode[2].DriverName, "disk"))\r |
1242 | {\r | |
6b40e66a RN |
1243 | //\r |
1244 | // OpenFirmware device path (virtio-scsi disk):\r | |
1245 | //\r | |
1246 | // /virtio-mmio@000000000a003a00/channel@0/disk@2,3\r | |
1247 | // ^ ^ ^ ^\r | |
1248 | // | | | LUN\r | |
1249 | // | | target\r | |
1250 | // | channel (unused, fixed 0)\r | |
1251 | // base address of virtio-mmio register block\r | |
1252 | //\r | |
1253 | // UEFI device path prefix:\r | |
1254 | //\r | |
1255 | // <VenHwString>/Scsi(0x2,0x3)\r | |
1256 | //\r | |
ac0a286f | 1257 | UINT64 TargetLun[2];\r |
6b40e66a RN |
1258 | \r |
1259 | TargetLun[1] = 0;\r | |
ac0a286f | 1260 | NumEntries = ARRAY_SIZE (TargetLun);\r |
6b40e66a RN |
1261 | if (ParseUnitAddressHexList (\r |
1262 | OfwNode[2].UnitAddress,\r | |
1263 | TargetLun,\r | |
1264 | &NumEntries\r | |
1265 | ) != RETURN_SUCCESS\r | |
ac0a286f MK |
1266 | )\r |
1267 | {\r | |
6b40e66a RN |
1268 | return RETURN_UNSUPPORTED;\r |
1269 | }\r | |
1270 | \r | |
1271 | Written = UnicodeSPrintAsciiFormat (\r | |
1272 | Translated,\r | |
1273 | *TranslatedSize * sizeof (*Translated), // BufferSize in bytes\r | |
1274 | "%s/Scsi(0x%Lx,0x%Lx)",\r | |
1275 | VenHwString,\r | |
1276 | TargetLun[0],\r | |
1277 | TargetLun[1]\r | |
1278 | );\r | |
ac0a286f MK |
1279 | } else if ((NumNodes >= 2) &&\r |
1280 | SubstringEq (OfwNode[1].DriverName, "ethernet-phy"))\r | |
1281 | {\r | |
6b40e66a RN |
1282 | //\r |
1283 | // OpenFirmware device path (virtio-net NIC):\r | |
1284 | //\r | |
1285 | // /virtio-mmio@000000000a003e00/ethernet-phy@0\r | |
1286 | // ^ ^\r | |
1287 | // | fixed\r | |
1288 | // base address of virtio-mmio register block\r | |
1289 | //\r | |
90f09188 | 1290 | // UEFI device path prefix:\r |
6b40e66a | 1291 | //\r |
90f09188 | 1292 | // <VenHwString>\r |
6b40e66a RN |
1293 | //\r |
1294 | Written = UnicodeSPrintAsciiFormat (\r | |
1295 | Translated,\r | |
1296 | *TranslatedSize * sizeof (*Translated), // BufferSize in bytes\r | |
90f09188 | 1297 | "%s",\r |
6b40e66a RN |
1298 | VenHwString\r |
1299 | );\r | |
1300 | } else {\r | |
1301 | return RETURN_UNSUPPORTED;\r | |
1302 | }\r | |
1303 | \r | |
1304 | //\r | |
1305 | // There's no way to differentiate between "completely used up without\r | |
1306 | // truncation" and "truncated", so treat the former as the latter, and return\r | |
1307 | // success only for "some room left unused".\r | |
1308 | //\r | |
1309 | if (Written + 1 < *TranslatedSize) {\r | |
1310 | *TranslatedSize = Written;\r | |
1311 | return RETURN_SUCCESS;\r | |
1312 | }\r | |
1313 | \r | |
1314 | return RETURN_BUFFER_TOO_SMALL;\r | |
1315 | }\r | |
1316 | \r | |
6b40e66a RN |
1317 | /**\r |
1318 | \r | |
1319 | Translate an array of OpenFirmware device nodes to a UEFI device path\r | |
1320 | fragment.\r | |
1321 | \r | |
1322 | @param[in] OfwNode Array of OpenFirmware device nodes to\r | |
1323 | translate, constituting the beginning of an\r | |
1324 | OpenFirmware device path.\r | |
1325 | \r | |
1326 | @param[in] NumNodes Number of elements in OfwNode.\r | |
1327 | \r | |
1328 | @param[in] ExtraPciRoots An EXTRA_ROOT_BUS_MAP object created with\r | |
1329 | CreateExtraRootBusMap(), to be used for\r | |
1330 | translating positions of extra root buses to\r | |
1331 | bus numbers.\r | |
1332 | \r | |
1333 | @param[out] Translated Destination array receiving the UEFI path\r | |
1334 | fragment, allocated by the caller. If the\r | |
1335 | return value differs from RETURN_SUCCESS, its\r | |
1336 | contents is indeterminate.\r | |
1337 | \r | |
1338 | @param[in out] TranslatedSize On input, the number of CHAR16's in\r | |
1339 | Translated. On RETURN_SUCCESS this parameter\r | |
1340 | is assigned the number of non-NUL CHAR16's\r | |
1341 | written to Translated. In case of other return\r | |
1342 | values, TranslatedSize is indeterminate.\r | |
1343 | \r | |
1344 | \r | |
1345 | @retval RETURN_SUCCESS Translation successful.\r | |
1346 | \r | |
1347 | @retval RETURN_BUFFER_TOO_SMALL The translation does not fit into the number\r | |
1348 | of bytes provided.\r | |
1349 | \r | |
1350 | @retval RETURN_UNSUPPORTED The array of OpenFirmware device nodes can't\r | |
1351 | be translated in the current implementation.\r | |
1352 | \r | |
1353 | @retval RETURN_PROTOCOL_ERROR The array of OpenFirmware device nodes has\r | |
1354 | been (partially) recognized, but it contains\r | |
1355 | a logic error / doesn't match system state.\r | |
1356 | \r | |
1357 | **/\r | |
1358 | STATIC\r | |
1359 | RETURN_STATUS\r | |
1360 | TranslateOfwNodes (\r | |
ac0a286f MK |
1361 | IN CONST OFW_NODE *OfwNode,\r |
1362 | IN UINTN NumNodes,\r | |
1363 | IN CONST EXTRA_ROOT_BUS_MAP *ExtraPciRoots,\r | |
1364 | OUT CHAR16 *Translated,\r | |
1365 | IN OUT UINTN *TranslatedSize\r | |
6b40e66a RN |
1366 | )\r |
1367 | {\r | |
ac0a286f | 1368 | RETURN_STATUS Status;\r |
6b40e66a RN |
1369 | \r |
1370 | Status = RETURN_UNSUPPORTED;\r | |
1371 | \r | |
1372 | if (FeaturePcdGet (PcdQemuBootOrderPciTranslation)) {\r | |
ac0a286f MK |
1373 | Status = TranslatePciOfwNodes (\r |
1374 | OfwNode,\r | |
1375 | NumNodes,\r | |
1376 | ExtraPciRoots,\r | |
1377 | Translated,\r | |
1378 | TranslatedSize\r | |
1379 | );\r | |
6b40e66a | 1380 | }\r |
ac0a286f MK |
1381 | \r |
1382 | if ((Status == RETURN_UNSUPPORTED) &&\r | |
1383 | FeaturePcdGet (PcdQemuBootOrderMmioTranslation))\r | |
1384 | {\r | |
1385 | Status = TranslateMmioOfwNodes (\r | |
1386 | OfwNode,\r | |
1387 | NumNodes,\r | |
1388 | Translated,\r | |
1389 | TranslatedSize\r | |
1390 | );\r | |
6b40e66a | 1391 | }\r |
ac0a286f | 1392 | \r |
6b40e66a RN |
1393 | return Status;\r |
1394 | }\r | |
1395 | \r | |
1396 | /**\r | |
1397 | \r | |
1398 | Translate an OpenFirmware device path fragment to a UEFI device path\r | |
1399 | fragment, and advance in the input string.\r | |
1400 | \r | |
1401 | @param[in out] Ptr Address of the pointer pointing to the start\r | |
1402 | of the path string. After successful\r | |
1403 | translation (RETURN_SUCCESS) or at least\r | |
1404 | successful parsing (RETURN_UNSUPPORTED,\r | |
1405 | RETURN_BUFFER_TOO_SMALL), *Ptr is set to the\r | |
1406 | byte immediately following the consumed\r | |
1407 | characters. In other error cases, it points to\r | |
1408 | the byte that caused the error.\r | |
1409 | \r | |
1410 | @param[in] ExtraPciRoots An EXTRA_ROOT_BUS_MAP object created with\r | |
1411 | CreateExtraRootBusMap(), to be used for\r | |
1412 | translating positions of extra root buses to\r | |
1413 | bus numbers.\r | |
1414 | \r | |
1415 | @param[out] Translated Destination array receiving the UEFI path\r | |
1416 | fragment, allocated by the caller. If the\r | |
1417 | return value differs from RETURN_SUCCESS, its\r | |
1418 | contents is indeterminate.\r | |
1419 | \r | |
1420 | @param[in out] TranslatedSize On input, the number of CHAR16's in\r | |
1421 | Translated. On RETURN_SUCCESS this parameter\r | |
1422 | is assigned the number of non-NUL CHAR16's\r | |
1423 | written to Translated. In case of other return\r | |
1424 | values, TranslatedSize is indeterminate.\r | |
1425 | \r | |
1426 | \r | |
1427 | @retval RETURN_SUCCESS Translation successful.\r | |
1428 | \r | |
1429 | @retval RETURN_BUFFER_TOO_SMALL The OpenFirmware device path was parsed\r | |
1430 | successfully, but its translation did not\r | |
1431 | fit into the number of bytes provided.\r | |
1432 | Further calls to this function are\r | |
1433 | possible.\r | |
1434 | \r | |
1435 | @retval RETURN_UNSUPPORTED The OpenFirmware device path was parsed\r | |
1436 | successfully, but it can't be translated in\r | |
1437 | the current implementation. Further calls\r | |
1438 | to this function are possible.\r | |
1439 | \r | |
1440 | @retval RETURN_PROTOCOL_ERROR The OpenFirmware device path has been\r | |
1441 | (partially) recognized, but it contains a\r | |
1442 | logic error / doesn't match system state.\r | |
1443 | Further calls to this function are\r | |
1444 | possible.\r | |
1445 | \r | |
1446 | @retval RETURN_NOT_FOUND Translation terminated. On input, *Ptr was\r | |
1447 | pointing to the empty string or "HALT". On\r | |
1448 | output, *Ptr points to the empty string\r | |
1449 | (ie. "HALT" is consumed transparently when\r | |
1450 | present).\r | |
1451 | \r | |
1452 | @retval RETURN_INVALID_PARAMETER Parse error. This is a permanent error.\r | |
1453 | \r | |
1454 | **/\r | |
1455 | STATIC\r | |
1456 | RETURN_STATUS\r | |
1457 | TranslateOfwPath (\r | |
ac0a286f MK |
1458 | IN OUT CONST CHAR8 **Ptr,\r |
1459 | IN CONST EXTRA_ROOT_BUS_MAP *ExtraPciRoots,\r | |
1460 | OUT CHAR16 *Translated,\r | |
1461 | IN OUT UINTN *TranslatedSize\r | |
6b40e66a RN |
1462 | )\r |
1463 | {\r | |
ac0a286f MK |
1464 | UINTN NumNodes;\r |
1465 | RETURN_STATUS Status;\r | |
1466 | OFW_NODE Node[EXAMINED_OFW_NODES];\r | |
1467 | BOOLEAN IsFinal;\r | |
1468 | OFW_NODE Skip;\r | |
6b40e66a | 1469 | \r |
ac0a286f | 1470 | IsFinal = FALSE;\r |
6b40e66a RN |
1471 | NumNodes = 0;\r |
1472 | if (AsciiStrCmp (*Ptr, "HALT") == 0) {\r | |
ac0a286f | 1473 | *Ptr += 4;\r |
6b40e66a RN |
1474 | Status = RETURN_NOT_FOUND;\r |
1475 | } else {\r | |
1476 | Status = ParseOfwNode (Ptr, &Node[NumNodes], &IsFinal);\r | |
1477 | }\r | |
1478 | \r | |
1479 | if (Status == RETURN_NOT_FOUND) {\r | |
1480 | DEBUG ((DEBUG_VERBOSE, "%a: no more nodes\n", __FUNCTION__));\r | |
1481 | return RETURN_NOT_FOUND;\r | |
1482 | }\r | |
1483 | \r | |
1484 | while (Status == RETURN_SUCCESS && !IsFinal) {\r | |
1485 | ++NumNodes;\r | |
1486 | Status = ParseOfwNode (\r | |
1487 | Ptr,\r | |
1488 | (NumNodes < EXAMINED_OFW_NODES) ? &Node[NumNodes] : &Skip,\r | |
1489 | &IsFinal\r | |
1490 | );\r | |
1491 | }\r | |
1492 | \r | |
1493 | switch (Status) {\r | |
ac0a286f MK |
1494 | case RETURN_SUCCESS:\r |
1495 | ++NumNodes;\r | |
1496 | break;\r | |
6b40e66a | 1497 | \r |
ac0a286f MK |
1498 | case RETURN_INVALID_PARAMETER:\r |
1499 | DEBUG ((DEBUG_VERBOSE, "%a: parse error\n", __FUNCTION__));\r | |
1500 | return RETURN_INVALID_PARAMETER;\r | |
6b40e66a | 1501 | \r |
ac0a286f MK |
1502 | default:\r |
1503 | ASSERT (0);\r | |
6b40e66a RN |
1504 | }\r |
1505 | \r | |
1506 | Status = TranslateOfwNodes (\r | |
1507 | Node,\r | |
1508 | NumNodes < EXAMINED_OFW_NODES ? NumNodes : EXAMINED_OFW_NODES,\r | |
1509 | ExtraPciRoots,\r | |
1510 | Translated,\r | |
ac0a286f MK |
1511 | TranslatedSize\r |
1512 | );\r | |
6b40e66a | 1513 | switch (Status) {\r |
ac0a286f MK |
1514 | case RETURN_SUCCESS:\r |
1515 | DEBUG ((DEBUG_VERBOSE, "%a: success: \"%s\"\n", __FUNCTION__, Translated));\r | |
1516 | break;\r | |
6b40e66a | 1517 | \r |
ac0a286f MK |
1518 | case RETURN_BUFFER_TOO_SMALL:\r |
1519 | DEBUG ((DEBUG_VERBOSE, "%a: buffer too small\n", __FUNCTION__));\r | |
1520 | break;\r | |
6b40e66a | 1521 | \r |
ac0a286f MK |
1522 | case RETURN_UNSUPPORTED:\r |
1523 | DEBUG ((DEBUG_VERBOSE, "%a: unsupported\n", __FUNCTION__));\r | |
1524 | break;\r | |
6b40e66a | 1525 | \r |
ac0a286f MK |
1526 | case RETURN_PROTOCOL_ERROR:\r |
1527 | DEBUG ((\r | |
1528 | DEBUG_VERBOSE,\r | |
1529 | "%a: logic error / system state mismatch\n",\r | |
1530 | __FUNCTION__\r | |
1531 | ));\r | |
1532 | break;\r | |
6b40e66a | 1533 | \r |
ac0a286f MK |
1534 | default:\r |
1535 | ASSERT (0);\r | |
6b40e66a | 1536 | }\r |
ac0a286f | 1537 | \r |
6b40e66a RN |
1538 | return Status;\r |
1539 | }\r | |
1540 | \r | |
51bd1f76 LE |
1541 | /**\r |
1542 | Connect devices based on the boot order retrieved from QEMU.\r | |
1543 | \r | |
1544 | Attempt to retrieve the "bootorder" fw_cfg file from QEMU. Translate the\r | |
1545 | OpenFirmware device paths therein to UEFI device path fragments. Connect the\r | |
1546 | devices identified by the UEFI devpath prefixes as narrowly as possible, then\r | |
1547 | connect all their child devices, recursively.\r | |
1548 | \r | |
1549 | If this function fails, then platform BDS should fall back to\r | |
1550 | EfiBootManagerConnectAll(), or some other method for connecting any expected\r | |
1551 | boot devices.\r | |
1552 | \r | |
1553 | @retval RETURN_SUCCESS The "bootorder" fw_cfg file has been\r | |
1554 | parsed, and the referenced device-subtrees\r | |
1555 | have been connected.\r | |
1556 | \r | |
1557 | @retval RETURN_UNSUPPORTED QEMU's fw_cfg is not supported.\r | |
1558 | \r | |
1559 | @retval RETURN_NOT_FOUND Empty or nonexistent "bootorder" fw_cfg\r | |
1560 | file.\r | |
1561 | \r | |
1562 | @retval RETURN_INVALID_PARAMETER Parse error in the "bootorder" fw_cfg file.\r | |
1563 | \r | |
1564 | @retval RETURN_OUT_OF_RESOURCES Memory allocation failed.\r | |
1565 | \r | |
1566 | @return Error statuses propagated from underlying\r | |
1567 | functions.\r | |
1568 | **/\r | |
1569 | RETURN_STATUS\r | |
1570 | EFIAPI\r | |
1571 | ConnectDevicesFromQemu (\r | |
1572 | VOID\r | |
1573 | )\r | |
1574 | {\r | |
ac0a286f MK |
1575 | RETURN_STATUS Status;\r |
1576 | FIRMWARE_CONFIG_ITEM FwCfgItem;\r | |
1577 | UINTN FwCfgSize;\r | |
1578 | CHAR8 *FwCfg;\r | |
1579 | EFI_STATUS EfiStatus;\r | |
1580 | EXTRA_ROOT_BUS_MAP *ExtraPciRoots;\r | |
1581 | CONST CHAR8 *FwCfgPtr;\r | |
1582 | UINTN NumConnected;\r | |
1583 | UINTN TranslatedSize;\r | |
1584 | CHAR16 Translated[TRANSLATION_OUTPUT_SIZE];\r | |
51bd1f76 LE |
1585 | \r |
1586 | Status = QemuFwCfgFindFile ("bootorder", &FwCfgItem, &FwCfgSize);\r | |
1587 | if (RETURN_ERROR (Status)) {\r | |
1588 | return Status;\r | |
1589 | }\r | |
1590 | \r | |
1591 | if (FwCfgSize == 0) {\r | |
1592 | return RETURN_NOT_FOUND;\r | |
1593 | }\r | |
1594 | \r | |
1595 | FwCfg = AllocatePool (FwCfgSize);\r | |
1596 | if (FwCfg == NULL) {\r | |
1597 | return RETURN_OUT_OF_RESOURCES;\r | |
1598 | }\r | |
1599 | \r | |
1600 | QemuFwCfgSelectItem (FwCfgItem);\r | |
1601 | QemuFwCfgReadBytes (FwCfgSize, FwCfg);\r | |
1602 | if (FwCfg[FwCfgSize - 1] != '\0') {\r | |
1603 | Status = RETURN_INVALID_PARAMETER;\r | |
1604 | goto FreeFwCfg;\r | |
1605 | }\r | |
ac0a286f | 1606 | \r |
51bd1f76 LE |
1607 | DEBUG ((DEBUG_VERBOSE, "%a: FwCfg:\n", __FUNCTION__));\r |
1608 | DEBUG ((DEBUG_VERBOSE, "%a\n", FwCfg));\r | |
1609 | DEBUG ((DEBUG_VERBOSE, "%a: FwCfg: <end>\n", __FUNCTION__));\r | |
1610 | \r | |
1611 | if (FeaturePcdGet (PcdQemuBootOrderPciTranslation)) {\r | |
1612 | EfiStatus = CreateExtraRootBusMap (&ExtraPciRoots);\r | |
1613 | if (EFI_ERROR (EfiStatus)) {\r | |
1614 | Status = (RETURN_STATUS)EfiStatus;\r | |
1615 | goto FreeFwCfg;\r | |
1616 | }\r | |
1617 | } else {\r | |
1618 | ExtraPciRoots = NULL;\r | |
1619 | }\r | |
1620 | \r | |
1621 | //\r | |
1622 | // Translate each OpenFirmware path to a UEFI devpath prefix.\r | |
1623 | //\r | |
ac0a286f MK |
1624 | FwCfgPtr = FwCfg;\r |
1625 | NumConnected = 0;\r | |
51bd1f76 | 1626 | TranslatedSize = ARRAY_SIZE (Translated);\r |
ac0a286f MK |
1627 | Status = TranslateOfwPath (\r |
1628 | &FwCfgPtr,\r | |
1629 | ExtraPciRoots,\r | |
1630 | Translated,\r | |
1631 | &TranslatedSize\r | |
1632 | );\r | |
51bd1f76 | 1633 | while (!RETURN_ERROR (Status)) {\r |
ac0a286f MK |
1634 | EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r |
1635 | EFI_HANDLE Controller;\r | |
51bd1f76 LE |
1636 | \r |
1637 | //\r | |
1638 | // Convert the UEFI devpath prefix to binary representation.\r | |
1639 | //\r | |
1640 | ASSERT (Translated[TranslatedSize] == L'\0');\r | |
1641 | DevicePath = ConvertTextToDevicePath (Translated);\r | |
1642 | if (DevicePath == NULL) {\r | |
1643 | Status = RETURN_OUT_OF_RESOURCES;\r | |
1644 | goto FreeExtraPciRoots;\r | |
1645 | }\r | |
ac0a286f | 1646 | \r |
51bd1f76 LE |
1647 | //\r |
1648 | // Advance along DevicePath, connecting the nodes individually, and asking\r | |
1649 | // drivers not to produce sibling nodes. Retrieve the controller handle\r | |
1650 | // associated with the full DevicePath -- this is the device that QEMU's\r | |
1651 | // OFW devpath refers to.\r | |
1652 | //\r | |
1653 | EfiStatus = EfiBootManagerConnectDevicePath (DevicePath, &Controller);\r | |
1654 | FreePool (DevicePath);\r | |
1655 | if (EFI_ERROR (EfiStatus)) {\r | |
1656 | Status = (RETURN_STATUS)EfiStatus;\r | |
1657 | goto FreeExtraPciRoots;\r | |
1658 | }\r | |
ac0a286f | 1659 | \r |
51bd1f76 LE |
1660 | //\r |
1661 | // Because QEMU's OFW devpaths have lesser expressive power than UEFI\r | |
1662 | // devpaths (i.e., DevicePath is considered a prefix), connect the tree\r | |
1663 | // rooted at Controller, recursively. If no children are produced\r | |
1664 | // (EFI_NOT_FOUND), that's OK.\r | |
1665 | //\r | |
1666 | EfiStatus = gBS->ConnectController (Controller, NULL, NULL, TRUE);\r | |
ac0a286f | 1667 | if (EFI_ERROR (EfiStatus) && (EfiStatus != EFI_NOT_FOUND)) {\r |
51bd1f76 LE |
1668 | Status = (RETURN_STATUS)EfiStatus;\r |
1669 | goto FreeExtraPciRoots;\r | |
1670 | }\r | |
ac0a286f | 1671 | \r |
51bd1f76 LE |
1672 | ++NumConnected;\r |
1673 | //\r | |
1674 | // Move to the next OFW devpath.\r | |
1675 | //\r | |
1676 | TranslatedSize = ARRAY_SIZE (Translated);\r | |
ac0a286f MK |
1677 | Status = TranslateOfwPath (\r |
1678 | &FwCfgPtr,\r | |
1679 | ExtraPciRoots,\r | |
1680 | Translated,\r | |
1681 | &TranslatedSize\r | |
1682 | );\r | |
51bd1f76 LE |
1683 | }\r |
1684 | \r | |
ac0a286f MK |
1685 | if ((Status == RETURN_NOT_FOUND) && (NumConnected > 0)) {\r |
1686 | DEBUG ((\r | |
1687 | DEBUG_INFO,\r | |
1688 | "%a: %Lu OpenFirmware device path(s) connected\n",\r | |
1689 | __FUNCTION__,\r | |
1690 | (UINT64)NumConnected\r | |
1691 | ));\r | |
51bd1f76 LE |
1692 | Status = RETURN_SUCCESS;\r |
1693 | }\r | |
1694 | \r | |
1695 | FreeExtraPciRoots:\r | |
1696 | if (ExtraPciRoots != NULL) {\r | |
1697 | DestroyExtraRootBusMap (ExtraPciRoots);\r | |
1698 | }\r | |
1699 | \r | |
1700 | FreeFwCfg:\r | |
1701 | FreePool (FwCfg);\r | |
1702 | \r | |
1703 | return Status;\r | |
1704 | }\r | |
1705 | \r | |
5eeb088a GH |
1706 | /**\r |
1707 | Write qemu boot order to uefi variables.\r | |
1708 | \r | |
1709 | Attempt to retrieve the "bootorder" fw_cfg file from QEMU. Translate\r | |
1710 | the OpenFirmware device paths therein to UEFI device path fragments.\r | |
1711 | \r | |
406ad058 | 1712 | On Success store the device path in VMMBootOrderNNNN variables.\r |
5eeb088a GH |
1713 | **/\r |
1714 | VOID\r | |
1715 | EFIAPI\r | |
1716 | StoreQemuBootOrder (\r | |
1717 | VOID\r | |
1718 | )\r | |
1719 | {\r | |
1720 | RETURN_STATUS Status;\r | |
1721 | FIRMWARE_CONFIG_ITEM FwCfgItem;\r | |
1722 | UINTN FwCfgSize;\r | |
1723 | CHAR8 *FwCfg;\r | |
1724 | EFI_STATUS EfiStatus;\r | |
1725 | EXTRA_ROOT_BUS_MAP *ExtraPciRoots;\r | |
1726 | CONST CHAR8 *FwCfgPtr;\r | |
1727 | UINTN TranslatedSize;\r | |
1728 | CHAR16 Translated[TRANSLATION_OUTPUT_SIZE];\r | |
1729 | UINTN VariableIndex = 0;\r | |
1730 | CHAR16 VariableName[20];\r | |
1731 | \r | |
1732 | Status = QemuFwCfgFindFile ("bootorder", &FwCfgItem, &FwCfgSize);\r | |
1733 | if (RETURN_ERROR (Status)) {\r | |
1734 | return;\r | |
1735 | }\r | |
1736 | \r | |
1737 | if (FwCfgSize == 0) {\r | |
1738 | return;\r | |
1739 | }\r | |
1740 | \r | |
1741 | FwCfg = AllocatePool (FwCfgSize);\r | |
1742 | if (FwCfg == NULL) {\r | |
1743 | return;\r | |
1744 | }\r | |
1745 | \r | |
1746 | QemuFwCfgSelectItem (FwCfgItem);\r | |
1747 | QemuFwCfgReadBytes (FwCfgSize, FwCfg);\r | |
1748 | if (FwCfg[FwCfgSize - 1] != '\0') {\r | |
1749 | Status = RETURN_INVALID_PARAMETER;\r | |
1750 | goto FreeFwCfg;\r | |
1751 | }\r | |
1752 | \r | |
1753 | DEBUG ((DEBUG_VERBOSE, "%a: FwCfg:\n", __FUNCTION__));\r | |
1754 | DEBUG ((DEBUG_VERBOSE, "%a\n", FwCfg));\r | |
1755 | DEBUG ((DEBUG_VERBOSE, "%a: FwCfg: <end>\n", __FUNCTION__));\r | |
1756 | \r | |
1757 | if (FeaturePcdGet (PcdQemuBootOrderPciTranslation)) {\r | |
1758 | EfiStatus = CreateExtraRootBusMap (&ExtraPciRoots);\r | |
1759 | if (EFI_ERROR (EfiStatus)) {\r | |
1760 | Status = (RETURN_STATUS)EfiStatus;\r | |
1761 | goto FreeFwCfg;\r | |
1762 | }\r | |
1763 | } else {\r | |
1764 | ExtraPciRoots = NULL;\r | |
1765 | }\r | |
1766 | \r | |
1767 | //\r | |
1768 | // Translate each OpenFirmware path to a UEFI devpath prefix.\r | |
1769 | //\r | |
1770 | FwCfgPtr = FwCfg;\r | |
1771 | TranslatedSize = ARRAY_SIZE (Translated);\r | |
1772 | Status = TranslateOfwPath (\r | |
1773 | &FwCfgPtr,\r | |
1774 | ExtraPciRoots,\r | |
1775 | Translated,\r | |
1776 | &TranslatedSize\r | |
1777 | );\r | |
b7213bbd GH |
1778 | while (Status == EFI_SUCCESS ||\r |
1779 | Status == EFI_UNSUPPORTED)\r | |
1780 | {\r | |
1781 | if (Status == EFI_SUCCESS) {\r | |
1782 | EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r | |
1783 | \r | |
1784 | //\r | |
1785 | // Convert the UEFI devpath prefix to binary representation.\r | |
1786 | //\r | |
1787 | ASSERT (Translated[TranslatedSize] == L'\0');\r | |
1788 | DevicePath = ConvertTextToDevicePath (Translated);\r | |
1789 | if (DevicePath == NULL) {\r | |
1790 | Status = RETURN_OUT_OF_RESOURCES;\r | |
1791 | goto FreeExtraPciRoots;\r | |
1792 | }\r | |
5eeb088a | 1793 | \r |
b7213bbd GH |
1794 | UnicodeSPrint (\r |
1795 | VariableName,\r | |
1796 | sizeof (VariableName),\r | |
406ad058 | 1797 | L"VMMBootOrder%04x",\r |
b7213bbd GH |
1798 | VariableIndex++\r |
1799 | );\r | |
1800 | DEBUG ((DEBUG_INFO, "%a: %s = %s\n", __FUNCTION__, VariableName, Translated));\r | |
1801 | gRT->SetVariable (\r | |
1802 | VariableName,\r | |
406ad058 | 1803 | &gVMMBootOrderGuid,\r |
b7213bbd GH |
1804 | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r |
1805 | GetDevicePathSize (DevicePath),\r | |
1806 | DevicePath\r | |
1807 | );\r | |
1808 | FreePool (DevicePath);\r | |
5eeb088a GH |
1809 | }\r |
1810 | \r | |
5eeb088a GH |
1811 | //\r |
1812 | // Move to the next OFW devpath.\r | |
1813 | //\r | |
1814 | TranslatedSize = ARRAY_SIZE (Translated);\r | |
1815 | Status = TranslateOfwPath (\r | |
1816 | &FwCfgPtr,\r | |
1817 | ExtraPciRoots,\r | |
1818 | Translated,\r | |
1819 | &TranslatedSize\r | |
1820 | );\r | |
1821 | }\r | |
1822 | \r | |
1823 | FreeExtraPciRoots:\r | |
1824 | if (ExtraPciRoots != NULL) {\r | |
1825 | DestroyExtraRootBusMap (ExtraPciRoots);\r | |
1826 | }\r | |
1827 | \r | |
1828 | FreeFwCfg:\r | |
1829 | FreePool (FwCfg);\r | |
1830 | }\r | |
1831 | \r | |
6b40e66a RN |
1832 | /**\r |
1833 | \r | |
1834 | Convert the UEFI DevicePath to full text representation with DevPathToText,\r | |
1835 | then match the UEFI device path fragment in Translated against it.\r | |
1836 | \r | |
1837 | @param[in] Translated UEFI device path fragment, translated from\r | |
1838 | OpenFirmware format, to search for.\r | |
1839 | \r | |
1840 | @param[in] TranslatedLength The length of Translated in CHAR16's.\r | |
1841 | \r | |
1842 | @param[in] DevicePath Boot option device path whose textual rendering\r | |
1843 | to search in.\r | |
1844 | \r | |
1845 | @param[in] DevPathToText Binary-to-text conversion protocol for DevicePath.\r | |
1846 | \r | |
1847 | \r | |
1848 | @retval TRUE If Translated was found at the beginning of DevicePath after\r | |
1849 | converting the latter to text.\r | |
1850 | \r | |
1851 | @retval FALSE If DevicePath was NULL, or it could not be converted, or there\r | |
1852 | was no match.\r | |
1853 | \r | |
1854 | **/\r | |
1855 | STATIC\r | |
1856 | BOOLEAN\r | |
1857 | Match (\r | |
ac0a286f MK |
1858 | IN CONST CHAR16 *Translated,\r |
1859 | IN UINTN TranslatedLength,\r | |
1860 | IN EFI_DEVICE_PATH_PROTOCOL *DevicePath\r | |
6b40e66a RN |
1861 | )\r |
1862 | {\r | |
ac0a286f MK |
1863 | CHAR16 *Converted;\r |
1864 | BOOLEAN Result;\r | |
1865 | VOID *FileBuffer;\r | |
1866 | UINTN FileSize;\r | |
1867 | EFI_DEVICE_PATH_PROTOCOL *AbsDevicePath;\r | |
1868 | CHAR16 *AbsConverted;\r | |
1869 | BOOLEAN Shortform;\r | |
1870 | EFI_DEVICE_PATH_PROTOCOL *Node;\r | |
6b40e66a RN |
1871 | \r |
1872 | Converted = ConvertDevicePathToText (\r | |
1873 | DevicePath,\r | |
1874 | FALSE, // DisplayOnly\r | |
1875 | FALSE // AllowShortcuts\r | |
1876 | );\r | |
1877 | if (Converted == NULL) {\r | |
1878 | return FALSE;\r | |
1879 | }\r | |
1880 | \r | |
ac0a286f | 1881 | Result = FALSE;\r |
d27ec22d | 1882 | Shortform = FALSE;\r |
6b40e66a | 1883 | //\r |
d27ec22d | 1884 | // Expand the short-form device path to full device path\r |
6b40e66a | 1885 | //\r |
d27ec22d | 1886 | if ((DevicePathType (DevicePath) == MEDIA_DEVICE_PATH) &&\r |
ac0a286f MK |
1887 | (DevicePathSubType (DevicePath) == MEDIA_HARDDRIVE_DP))\r |
1888 | {\r | |
d27ec22d RN |
1889 | //\r |
1890 | // Harddrive shortform device path\r | |
1891 | //\r | |
1892 | Shortform = TRUE;\r | |
1893 | } else if ((DevicePathType (DevicePath) == MEDIA_DEVICE_PATH) &&\r | |
ac0a286f MK |
1894 | (DevicePathSubType (DevicePath) == MEDIA_FILEPATH_DP))\r |
1895 | {\r | |
d27ec22d RN |
1896 | //\r |
1897 | // File-path shortform device path\r | |
1898 | //\r | |
1899 | Shortform = TRUE;\r | |
1900 | } else if ((DevicePathType (DevicePath) == MESSAGING_DEVICE_PATH) &&\r | |
ac0a286f MK |
1901 | (DevicePathSubType (DevicePath) == MSG_URI_DP))\r |
1902 | {\r | |
d27ec22d RN |
1903 | //\r |
1904 | // URI shortform device path\r | |
1905 | //\r | |
1906 | Shortform = TRUE;\r | |
1907 | } else {\r | |
1908 | for ( Node = DevicePath\r | |
ac0a286f MK |
1909 | ; !IsDevicePathEnd (Node)\r |
1910 | ; Node = NextDevicePathNode (Node)\r | |
1911 | )\r | |
1912 | {\r | |
d27ec22d RN |
1913 | if ((DevicePathType (Node) == MESSAGING_DEVICE_PATH) &&\r |
1914 | ((DevicePathSubType (Node) == MSG_USB_CLASS_DP) ||\r | |
ac0a286f MK |
1915 | (DevicePathSubType (Node) == MSG_USB_WWID_DP)))\r |
1916 | {\r | |
d27ec22d RN |
1917 | Shortform = TRUE;\r |
1918 | break;\r | |
1919 | }\r | |
1920 | }\r | |
1921 | }\r | |
1922 | \r | |
1923 | //\r | |
1924 | // Attempt to expand any relative UEFI device path to\r | |
1925 | // an absolute device path first.\r | |
1926 | //\r | |
1927 | if (Shortform) {\r | |
1928 | FileBuffer = EfiBootManagerGetLoadOptionBuffer (\r | |
ac0a286f MK |
1929 | DevicePath,\r |
1930 | &AbsDevicePath,\r | |
1931 | &FileSize\r | |
d27ec22d RN |
1932 | );\r |
1933 | if (FileBuffer == NULL) {\r | |
6b40e66a RN |
1934 | goto Exit;\r |
1935 | }\r | |
ac0a286f | 1936 | \r |
d27ec22d | 1937 | FreePool (FileBuffer);\r |
6b40e66a | 1938 | AbsConverted = ConvertDevicePathToText (AbsDevicePath, FALSE, FALSE);\r |
d27ec22d | 1939 | FreePool (AbsDevicePath);\r |
6b40e66a RN |
1940 | if (AbsConverted == NULL) {\r |
1941 | goto Exit;\r | |
1942 | }\r | |
ac0a286f MK |
1943 | \r |
1944 | DEBUG ((\r | |
1945 | DEBUG_VERBOSE,\r | |
6b40e66a | 1946 | "%a: expanded relative device path \"%s\" for prefix matching\n",\r |
ac0a286f MK |
1947 | __FUNCTION__,\r |
1948 | Converted\r | |
1949 | ));\r | |
6b40e66a RN |
1950 | FreePool (Converted);\r |
1951 | Converted = AbsConverted;\r | |
1952 | }\r | |
1953 | \r | |
1954 | //\r | |
1955 | // Is Translated a prefix of Converted?\r | |
1956 | //\r | |
1957 | Result = (BOOLEAN)(StrnCmp (Converted, Translated, TranslatedLength) == 0);\r | |
1958 | DEBUG ((\r | |
1959 | DEBUG_VERBOSE,\r | |
1960 | "%a: against \"%s\": %a\n",\r | |
1961 | __FUNCTION__,\r | |
1962 | Converted,\r | |
1963 | Result ? "match" : "no match"\r | |
1964 | ));\r | |
1965 | Exit:\r | |
1966 | FreePool (Converted);\r | |
1967 | return Result;\r | |
1968 | }\r | |
1969 | \r | |
6b40e66a RN |
1970 | /**\r |
1971 | Append some of the unselected active boot options to the boot order.\r | |
1972 | \r | |
1973 | This function should accommodate any further policy changes in "boot option\r | |
1974 | survival". Currently we're adding back everything that starts with neither\r | |
1975 | PciRoot() nor HD() nor a virtio-mmio VenHw() node.\r | |
1976 | \r | |
1977 | @param[in,out] BootOrder The structure holding the boot order to\r | |
1978 | complete. The caller is responsible for\r | |
1979 | initializing (and potentially populating) it\r | |
1980 | before calling this function.\r | |
1981 | \r | |
1982 | @param[in,out] ActiveOption The array of active boot options to scan.\r | |
1983 | Entries marked as Appended will be skipped.\r | |
1984 | Those of the rest that satisfy the survival\r | |
1985 | policy will be added to BootOrder with\r | |
1986 | BootOrderAppend().\r | |
1987 | \r | |
1988 | @param[in] ActiveCount Number of elements in ActiveOption.\r | |
1989 | \r | |
1990 | \r | |
1991 | @retval RETURN_SUCCESS BootOrder has been extended with any eligible boot\r | |
1992 | options.\r | |
1993 | \r | |
1994 | @return Error codes returned by BootOrderAppend().\r | |
1995 | **/\r | |
1996 | STATIC\r | |
1997 | RETURN_STATUS\r | |
1998 | BootOrderComplete (\r | |
ac0a286f MK |
1999 | IN OUT BOOT_ORDER *BootOrder,\r |
2000 | IN OUT ACTIVE_OPTION *ActiveOption,\r | |
2001 | IN UINTN ActiveCount\r | |
6b40e66a RN |
2002 | )\r |
2003 | {\r | |
ac0a286f MK |
2004 | RETURN_STATUS Status;\r |
2005 | UINTN Idx;\r | |
6b40e66a RN |
2006 | \r |
2007 | Status = RETURN_SUCCESS;\r | |
ac0a286f | 2008 | Idx = 0;\r |
6b40e66a RN |
2009 | while (!RETURN_ERROR (Status) && Idx < ActiveCount) {\r |
2010 | if (!ActiveOption[Idx].Appended) {\r | |
ac0a286f MK |
2011 | CONST EFI_BOOT_MANAGER_LOAD_OPTION *Current;\r |
2012 | CONST EFI_DEVICE_PATH_PROTOCOL *FirstNode;\r | |
6b40e66a | 2013 | \r |
ac0a286f | 2014 | Current = ActiveOption[Idx].BootOption;\r |
d27ec22d | 2015 | FirstNode = Current->FilePath;\r |
6b40e66a | 2016 | if (FirstNode != NULL) {\r |
ac0a286f MK |
2017 | CHAR16 *Converted;\r |
2018 | STATIC CHAR16 ConvFallBack[] = L"<unable to convert>";\r | |
2019 | BOOLEAN Keep;\r | |
6b40e66a RN |
2020 | \r |
2021 | Converted = ConvertDevicePathToText (FirstNode, FALSE, FALSE);\r | |
2022 | if (Converted == NULL) {\r | |
2023 | Converted = ConvFallBack;\r | |
2024 | }\r | |
2025 | \r | |
2026 | Keep = TRUE;\r | |
ac0a286f MK |
2027 | if ((DevicePathType (FirstNode) == MEDIA_DEVICE_PATH) &&\r |
2028 | (DevicePathSubType (FirstNode) == MEDIA_HARDDRIVE_DP))\r | |
2029 | {\r | |
6b40e66a RN |
2030 | //\r |
2031 | // drop HD()\r | |
2032 | //\r | |
2033 | Keep = FALSE;\r | |
ac0a286f MK |
2034 | } else if ((DevicePathType (FirstNode) == ACPI_DEVICE_PATH) &&\r |
2035 | (DevicePathSubType (FirstNode) == ACPI_DP))\r | |
2036 | {\r | |
2037 | ACPI_HID_DEVICE_PATH *Acpi;\r | |
2038 | \r | |
2039 | Acpi = (ACPI_HID_DEVICE_PATH *)FirstNode;\r | |
2040 | if (((Acpi->HID & PNP_EISA_ID_MASK) == PNP_EISA_ID_CONST) &&\r | |
2041 | (EISA_ID_TO_NUM (Acpi->HID) == 0x0a03))\r | |
2042 | {\r | |
6b40e66a RN |
2043 | //\r |
2044 | // drop PciRoot() if we enabled the user to select PCI-like boot\r | |
2045 | // options, by providing translation for such OFW device path\r | |
2046 | // fragments\r | |
2047 | //\r | |
2048 | Keep = !FeaturePcdGet (PcdQemuBootOrderPciTranslation);\r | |
2049 | }\r | |
ac0a286f MK |
2050 | } else if ((DevicePathType (FirstNode) == HARDWARE_DEVICE_PATH) &&\r |
2051 | (DevicePathSubType (FirstNode) == HW_VENDOR_DP))\r | |
2052 | {\r | |
2053 | VENDOR_DEVICE_PATH *VenHw;\r | |
6b40e66a RN |
2054 | \r |
2055 | VenHw = (VENDOR_DEVICE_PATH *)FirstNode;\r | |
2056 | if (CompareGuid (&VenHw->Guid, &gVirtioMmioTransportGuid)) {\r | |
2057 | //\r | |
2058 | // drop virtio-mmio if we enabled the user to select boot options\r | |
2059 | // referencing such device paths\r | |
2060 | //\r | |
2061 | Keep = !FeaturePcdGet (PcdQemuBootOrderMmioTranslation);\r | |
2062 | }\r | |
2063 | }\r | |
2064 | \r | |
2065 | if (Keep) {\r | |
2066 | Status = BootOrderAppend (BootOrder, &ActiveOption[Idx]);\r | |
2067 | if (!RETURN_ERROR (Status)) {\r | |
ac0a286f MK |
2068 | DEBUG ((\r |
2069 | DEBUG_VERBOSE,\r | |
2070 | "%a: keeping \"%s\"\n",\r | |
2071 | __FUNCTION__,\r | |
2072 | Converted\r | |
2073 | ));\r | |
6b40e66a RN |
2074 | }\r |
2075 | } else {\r | |
ac0a286f MK |
2076 | DEBUG ((\r |
2077 | DEBUG_VERBOSE,\r | |
2078 | "%a: dropping \"%s\"\n",\r | |
2079 | __FUNCTION__,\r | |
2080 | Converted\r | |
2081 | ));\r | |
6b40e66a RN |
2082 | }\r |
2083 | \r | |
2084 | if (Converted != ConvFallBack) {\r | |
2085 | FreePool (Converted);\r | |
2086 | }\r | |
2087 | }\r | |
2088 | }\r | |
ac0a286f | 2089 | \r |
6b40e66a RN |
2090 | ++Idx;\r |
2091 | }\r | |
ac0a286f | 2092 | \r |
6b40e66a RN |
2093 | return Status;\r |
2094 | }\r | |
2095 | \r | |
6b40e66a RN |
2096 | /**\r |
2097 | Delete Boot#### variables that stand for such active boot options that have\r | |
2098 | been dropped (ie. have not been selected by either matching or "survival\r | |
2099 | policy").\r | |
2100 | \r | |
2101 | @param[in] ActiveOption The array of active boot options to scan. Each\r | |
2102 | entry not marked as appended will trigger the\r | |
2103 | deletion of the matching Boot#### variable.\r | |
2104 | \r | |
2105 | @param[in] ActiveCount Number of elements in ActiveOption.\r | |
2106 | **/\r | |
2107 | STATIC\r | |
2108 | VOID\r | |
2109 | PruneBootVariables (\r | |
ac0a286f MK |
2110 | IN CONST ACTIVE_OPTION *ActiveOption,\r |
2111 | IN UINTN ActiveCount\r | |
6b40e66a RN |
2112 | )\r |
2113 | {\r | |
ac0a286f | 2114 | UINTN Idx;\r |
6b40e66a RN |
2115 | \r |
2116 | for (Idx = 0; Idx < ActiveCount; ++Idx) {\r | |
2117 | if (!ActiveOption[Idx].Appended) {\r | |
ac0a286f | 2118 | CHAR16 VariableName[9];\r |
6b40e66a | 2119 | \r |
ac0a286f MK |
2120 | UnicodeSPrintAsciiFormat (\r |
2121 | VariableName,\r | |
2122 | sizeof VariableName,\r | |
2123 | "Boot%04x",\r | |
2124 | ActiveOption[Idx].BootOption->OptionNumber\r | |
2125 | );\r | |
6b40e66a RN |
2126 | \r |
2127 | //\r | |
2128 | // "The space consumed by the deleted variable may not be available until\r | |
2129 | // the next power cycle", but that's good enough.\r | |
2130 | //\r | |
ac0a286f MK |
2131 | gRT->SetVariable (\r |
2132 | VariableName,\r | |
2133 | &gEfiGlobalVariableGuid,\r | |
6b40e66a RN |
2134 | 0, // Attributes, 0 means deletion\r |
2135 | 0, // DataSize, 0 means deletion\r | |
2136 | NULL // Data\r | |
2137 | );\r | |
2138 | }\r | |
2139 | }\r | |
2140 | }\r | |
2141 | \r | |
6b40e66a RN |
2142 | /**\r |
2143 | \r | |
2144 | Set the boot order based on configuration retrieved from QEMU.\r | |
2145 | \r | |
2146 | Attempt to retrieve the "bootorder" fw_cfg file from QEMU. Translate the\r | |
2147 | OpenFirmware device paths therein to UEFI device path fragments. Match the\r | |
2542feea LE |
2148 | translated fragments against the current list of boot options, and rewrite\r |
2149 | the BootOrder NvVar so that it corresponds to the order described in fw_cfg.\r | |
6b40e66a | 2150 | \r |
51bd1f76 LE |
2151 | Platform BDS should call this function after connecting any expected boot\r |
2152 | devices and calling EfiBootManagerRefreshAllBootOption ().\r | |
6b40e66a RN |
2153 | \r |
2154 | @retval RETURN_SUCCESS BootOrder NvVar rewritten.\r | |
2155 | \r | |
2156 | @retval RETURN_UNSUPPORTED QEMU's fw_cfg is not supported.\r | |
2157 | \r | |
2158 | @retval RETURN_NOT_FOUND Empty or nonexistent "bootorder" fw_cfg\r | |
2159 | file, or no match found between the\r | |
2160 | "bootorder" fw_cfg file and BootOptionList.\r | |
2161 | \r | |
2162 | @retval RETURN_INVALID_PARAMETER Parse error in the "bootorder" fw_cfg file.\r | |
2163 | \r | |
2164 | @retval RETURN_OUT_OF_RESOURCES Memory allocation failed.\r | |
2165 | \r | |
2166 | @return Values returned by gBS->LocateProtocol ()\r | |
2167 | or gRT->SetVariable ().\r | |
2168 | \r | |
2169 | **/\r | |
2170 | RETURN_STATUS\r | |
5851b825 | 2171 | EFIAPI\r |
6b40e66a | 2172 | SetBootOrderFromQemu (\r |
2542feea | 2173 | VOID\r |
6b40e66a RN |
2174 | )\r |
2175 | {\r | |
ac0a286f MK |
2176 | RETURN_STATUS Status;\r |
2177 | FIRMWARE_CONFIG_ITEM FwCfgItem;\r | |
2178 | UINTN FwCfgSize;\r | |
2179 | CHAR8 *FwCfg;\r | |
2180 | CONST CHAR8 *FwCfgPtr;\r | |
6b40e66a | 2181 | \r |
ac0a286f MK |
2182 | BOOT_ORDER BootOrder;\r |
2183 | ACTIVE_OPTION *ActiveOption;\r | |
2184 | UINTN ActiveCount;\r | |
6b40e66a | 2185 | \r |
ac0a286f | 2186 | EXTRA_ROOT_BUS_MAP *ExtraPciRoots;\r |
6b40e66a | 2187 | \r |
ac0a286f MK |
2188 | UINTN TranslatedSize;\r |
2189 | CHAR16 Translated[TRANSLATION_OUTPUT_SIZE];\r | |
2190 | EFI_BOOT_MANAGER_LOAD_OPTION *BootOptions;\r | |
2191 | UINTN BootOptionCount;\r | |
d27ec22d | 2192 | \r |
6b40e66a RN |
2193 | Status = QemuFwCfgFindFile ("bootorder", &FwCfgItem, &FwCfgSize);\r |
2194 | if (Status != RETURN_SUCCESS) {\r | |
2195 | return Status;\r | |
2196 | }\r | |
2197 | \r | |
2198 | if (FwCfgSize == 0) {\r | |
2199 | return RETURN_NOT_FOUND;\r | |
2200 | }\r | |
2201 | \r | |
2202 | FwCfg = AllocatePool (FwCfgSize);\r | |
2203 | if (FwCfg == NULL) {\r | |
2204 | return RETURN_OUT_OF_RESOURCES;\r | |
2205 | }\r | |
2206 | \r | |
2207 | QemuFwCfgSelectItem (FwCfgItem);\r | |
2208 | QemuFwCfgReadBytes (FwCfgSize, FwCfg);\r | |
2209 | if (FwCfg[FwCfgSize - 1] != '\0') {\r | |
2210 | Status = RETURN_INVALID_PARAMETER;\r | |
2211 | goto ErrorFreeFwCfg;\r | |
2212 | }\r | |
2213 | \r | |
2214 | DEBUG ((DEBUG_VERBOSE, "%a: FwCfg:\n", __FUNCTION__));\r | |
2215 | DEBUG ((DEBUG_VERBOSE, "%a\n", FwCfg));\r | |
2216 | DEBUG ((DEBUG_VERBOSE, "%a: FwCfg: <end>\n", __FUNCTION__));\r | |
2217 | FwCfgPtr = FwCfg;\r | |
2218 | \r | |
2219 | BootOrder.Produced = 0;\r | |
2220 | BootOrder.Allocated = 1;\r | |
ac0a286f MK |
2221 | BootOrder.Data = AllocatePool (\r |
2222 | BootOrder.Allocated * sizeof (*BootOrder.Data)\r | |
2223 | );\r | |
6b40e66a RN |
2224 | if (BootOrder.Data == NULL) {\r |
2225 | Status = RETURN_OUT_OF_RESOURCES;\r | |
2226 | goto ErrorFreeFwCfg;\r | |
2227 | }\r | |
2228 | \r | |
d27ec22d | 2229 | BootOptions = EfiBootManagerGetLoadOptions (\r |
ac0a286f MK |
2230 | &BootOptionCount,\r |
2231 | LoadOptionTypeBoot\r | |
d27ec22d RN |
2232 | );\r |
2233 | if (BootOptions == NULL) {\r | |
2234 | Status = RETURN_NOT_FOUND;\r | |
6b40e66a RN |
2235 | goto ErrorFreeBootOrder;\r |
2236 | }\r | |
2237 | \r | |
d27ec22d | 2238 | Status = CollectActiveOptions (\r |
ac0a286f MK |
2239 | BootOptions,\r |
2240 | BootOptionCount,\r | |
2241 | &ActiveOption,\r | |
2242 | &ActiveCount\r | |
d27ec22d RN |
2243 | );\r |
2244 | if (RETURN_ERROR (Status)) {\r | |
2245 | goto ErrorFreeBootOptions;\r | |
2246 | }\r | |
2247 | \r | |
6b40e66a RN |
2248 | if (FeaturePcdGet (PcdQemuBootOrderPciTranslation)) {\r |
2249 | Status = CreateExtraRootBusMap (&ExtraPciRoots);\r | |
2250 | if (EFI_ERROR (Status)) {\r | |
2251 | goto ErrorFreeActiveOption;\r | |
2252 | }\r | |
2253 | } else {\r | |
2254 | ExtraPciRoots = NULL;\r | |
2255 | }\r | |
2256 | \r | |
2257 | //\r | |
2258 | // translate each OpenFirmware path\r | |
2259 | //\r | |
10a82f7f | 2260 | TranslatedSize = ARRAY_SIZE (Translated);\r |
ac0a286f MK |
2261 | Status = TranslateOfwPath (\r |
2262 | &FwCfgPtr,\r | |
2263 | ExtraPciRoots,\r | |
2264 | Translated,\r | |
2265 | &TranslatedSize\r | |
2266 | );\r | |
6b40e66a RN |
2267 | while (Status == RETURN_SUCCESS ||\r |
2268 | Status == RETURN_UNSUPPORTED ||\r | |
2269 | Status == RETURN_PROTOCOL_ERROR ||\r | |
ac0a286f MK |
2270 | Status == RETURN_BUFFER_TOO_SMALL)\r |
2271 | {\r | |
6b40e66a | 2272 | if (Status == RETURN_SUCCESS) {\r |
ac0a286f | 2273 | UINTN Idx;\r |
6b40e66a RN |
2274 | \r |
2275 | //\r | |
2276 | // match translated OpenFirmware path against all active boot options\r | |
2277 | //\r | |
2278 | for (Idx = 0; Idx < ActiveCount; ++Idx) {\r | |
a0e761b1 LE |
2279 | if (!ActiveOption[Idx].Appended &&\r |
2280 | Match (\r | |
6b40e66a RN |
2281 | Translated,\r |
2282 | TranslatedSize, // contains length, not size, in CHAR16's here\r | |
d27ec22d | 2283 | ActiveOption[Idx].BootOption->FilePath\r |
6b40e66a | 2284 | )\r |
ac0a286f MK |
2285 | )\r |
2286 | {\r | |
6b40e66a RN |
2287 | //\r |
2288 | // match found, store ID and continue with next OpenFirmware path\r | |
2289 | //\r | |
2290 | Status = BootOrderAppend (&BootOrder, &ActiveOption[Idx]);\r | |
2291 | if (Status != RETURN_SUCCESS) {\r | |
2292 | goto ErrorFreeExtraPciRoots;\r | |
2293 | }\r | |
6b40e66a RN |
2294 | }\r |
2295 | } // scanned all active boot options\r | |
2296 | } // translation successful\r | |
2297 | \r | |
10a82f7f | 2298 | TranslatedSize = ARRAY_SIZE (Translated);\r |
ac0a286f MK |
2299 | Status = TranslateOfwPath (\r |
2300 | &FwCfgPtr,\r | |
2301 | ExtraPciRoots,\r | |
2302 | Translated,\r | |
2303 | &TranslatedSize\r | |
2304 | );\r | |
6b40e66a RN |
2305 | } // scanning of OpenFirmware paths done\r |
2306 | \r | |
ac0a286f | 2307 | if ((Status == RETURN_NOT_FOUND) && (BootOrder.Produced > 0)) {\r |
6b40e66a RN |
2308 | //\r |
2309 | // No more OpenFirmware paths, some matches found: rewrite BootOrder NvVar.\r | |
2310 | // Some of the active boot options that have not been selected over fw_cfg\r | |
2311 | // should be preserved at the end of the boot order.\r | |
2312 | //\r | |
2313 | Status = BootOrderComplete (&BootOrder, ActiveOption, ActiveCount);\r | |
2314 | if (RETURN_ERROR (Status)) {\r | |
2315 | goto ErrorFreeExtraPciRoots;\r | |
2316 | }\r | |
2317 | \r | |
2318 | //\r | |
2319 | // See Table 10 in the UEFI Spec 2.3.1 with Errata C for the required\r | |
2320 | // attributes.\r | |
2321 | //\r | |
2322 | Status = gRT->SetVariable (\r | |
2323 | L"BootOrder",\r | |
2324 | &gEfiGlobalVariableGuid,\r | |
2325 | EFI_VARIABLE_NON_VOLATILE |\r | |
ac0a286f MK |
2326 | EFI_VARIABLE_BOOTSERVICE_ACCESS |\r |
2327 | EFI_VARIABLE_RUNTIME_ACCESS,\r | |
6b40e66a RN |
2328 | BootOrder.Produced * sizeof (*BootOrder.Data),\r |
2329 | BootOrder.Data\r | |
2330 | );\r | |
2331 | if (EFI_ERROR (Status)) {\r | |
ac0a286f MK |
2332 | DEBUG ((\r |
2333 | DEBUG_ERROR,\r | |
2334 | "%a: setting BootOrder: %r\n",\r | |
2335 | __FUNCTION__,\r | |
2336 | Status\r | |
2337 | ));\r | |
6b40e66a RN |
2338 | goto ErrorFreeExtraPciRoots;\r |
2339 | }\r | |
2340 | \r | |
2341 | DEBUG ((DEBUG_INFO, "%a: setting BootOrder: success\n", __FUNCTION__));\r | |
2342 | PruneBootVariables (ActiveOption, ActiveCount);\r | |
2343 | }\r | |
2344 | \r | |
2345 | ErrorFreeExtraPciRoots:\r | |
2346 | if (ExtraPciRoots != NULL) {\r | |
2347 | DestroyExtraRootBusMap (ExtraPciRoots);\r | |
2348 | }\r | |
2349 | \r | |
2350 | ErrorFreeActiveOption:\r | |
2351 | FreePool (ActiveOption);\r | |
2352 | \r | |
d27ec22d RN |
2353 | ErrorFreeBootOptions:\r |
2354 | EfiBootManagerFreeLoadOptions (BootOptions, BootOptionCount);\r | |
2355 | \r | |
6b40e66a RN |
2356 | ErrorFreeBootOrder:\r |
2357 | FreePool (BootOrder.Data);\r | |
2358 | \r | |
2359 | ErrorFreeFwCfg:\r | |
2360 | FreePool (FwCfg);\r | |
2361 | \r | |
2362 | return Status;\r | |
2363 | }\r | |
2364 | \r | |
6b40e66a RN |
2365 | /**\r |
2366 | Calculate the number of seconds we should be showing the FrontPage progress\r | |
2367 | bar for.\r | |
2368 | \r | |
2369 | @return The TimeoutDefault argument for PlatformBdsEnterFrontPage().\r | |
2370 | **/\r | |
2371 | UINT16\r | |
5851b825 | 2372 | EFIAPI\r |
6b40e66a RN |
2373 | GetFrontPageTimeoutFromQemu (\r |
2374 | VOID\r | |
2375 | )\r | |
2376 | {\r | |
ac0a286f MK |
2377 | FIRMWARE_CONFIG_ITEM BootMenuWaitItem;\r |
2378 | UINTN BootMenuWaitSize;\r | |
43f3cfce SB |
2379 | UINT16 Timeout = PcdGet16 (PcdPlatformBootTimeOut);\r |
2380 | \r | |
2381 | if (!QemuFwCfgIsAvailable ()) {\r | |
2382 | return Timeout;\r | |
2383 | }\r | |
6b40e66a RN |
2384 | \r |
2385 | QemuFwCfgSelectItem (QemuFwCfgItemBootMenu);\r | |
2386 | if (QemuFwCfgRead16 () == 0) {\r | |
2387 | //\r | |
2388 | // The user specified "-boot menu=off", or didn't specify "-boot\r | |
2389 | // menu=(on|off)" at all. Return the platform default.\r | |
2390 | //\r | |
2391 | return PcdGet16 (PcdPlatformBootTimeOut);\r | |
2392 | }\r | |
2393 | \r | |
ac0a286f MK |
2394 | if (RETURN_ERROR (\r |
2395 | QemuFwCfgFindFile (\r | |
2396 | "etc/boot-menu-wait",\r | |
2397 | &BootMenuWaitItem,\r | |
2398 | &BootMenuWaitSize\r | |
2399 | )\r | |
2400 | ) ||\r | |
2401 | (BootMenuWaitSize != sizeof (UINT16)))\r | |
2402 | {\r | |
6b40e66a RN |
2403 | //\r |
2404 | // "-boot menu=on" was specified without "splash-time=N". In this case,\r | |
2405 | // return three seconds if the platform default would cause us to skip the\r | |
2406 | // front page, and return the platform default otherwise.\r | |
2407 | //\r | |
6b40e66a RN |
2408 | if (Timeout == 0) {\r |
2409 | Timeout = 3;\r | |
2410 | }\r | |
ac0a286f | 2411 | \r |
6b40e66a RN |
2412 | return Timeout;\r |
2413 | }\r | |
2414 | \r | |
2415 | //\r | |
2416 | // "-boot menu=on,splash-time=N" was specified, where N is in units of\r | |
2417 | // milliseconds. The Intel BDS Front Page progress bar only supports whole\r | |
2418 | // seconds, round N up.\r | |
2419 | //\r | |
2420 | QemuFwCfgSelectItem (BootMenuWaitItem);\r | |
2421 | return (UINT16)((QemuFwCfgRead16 () + 999) / 1000);\r | |
2422 | }\r |