Commit | Line | Data |
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bcecde14 | 1 | /** @file\r |
2 | Helper Routines that use a PXE-enabled NIC option ROM.\r | |
0a6f4824 LG |
3 | \r |
4 | Copyright (c) 1999 - 2018, Intel Corporation. All rights reserved.<BR>\r | |
bcecde14 | 5 | \r |
6 | This program and the accompanying materials\r | |
7 | are licensed and made available under the terms and conditions\r | |
8 | of the BSD License which accompanies this distribution. The\r | |
9 | full text of the license may be found at\r | |
10 | http://opensource.org/licenses/bsd-license.php\r | |
11 | \r | |
12 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
13 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
14 | \r | |
15 | **/\r | |
16 | \r | |
17 | #include "BiosSnp16.h"\r | |
18 | \r | |
19 | #define TO_SEGMENT(x) ((UINT16) (RShiftU64 ((UINT32)(UINTN) (x), 4) & 0xF000))\r | |
20 | #define TO_OFFSET(x) ((UINT16) ((UINT32)(UINTN) (x) & 0xFFFF))\r | |
21 | #define PARAGRAPH_SIZE 0x10\r | |
22 | #define IVT_BASE 0x00000000\r | |
23 | \r | |
24 | #pragma pack(1)\r | |
25 | typedef struct {\r | |
26 | UINT16 Signature; ///< 0xaa55\r | |
27 | UINT8 ROMlength; ///< size of this ROM in 512 byte blocks\r | |
28 | UINT8 InitEntryPoint[4]; ///< a jump to the initialization routine\r | |
29 | UINT8 Reserved[0xf]; ///< various\r | |
30 | UINT16 PxeRomIdOffset; ///< offset of UNDI, $BC$, or BUSD ROM ID structure\r | |
31 | UINT16 PcirHeaderOffset; ///< offset of PCI Expansion Header\r | |
32 | UINT16 PnpHeaderOffset; ///< offset of Plug and Play Expansion Header\r | |
33 | } OPTION_ROM_HEADER;\r | |
34 | #pragma pack()\r | |
35 | \r | |
36 | UINT32 CachedVectorAddress[0x100];\r | |
37 | \r | |
38 | /**\r | |
39 | Cache Interrupt verctor address converted from IVT number.\r | |
40 | \r | |
41 | @param VectorNumber IVT number\r | |
0a6f4824 | 42 | \r |
bcecde14 | 43 | @retval EFI_SUCCESS Success to operation.\r |
44 | **/\r | |
45 | EFI_STATUS\r | |
46 | CacheVectorAddress (\r | |
47 | UINT8 VectorNumber\r | |
48 | )\r | |
49 | {\r | |
50 | UINT32 *Address;\r | |
51 | \r | |
aa5f60ae | 52 | Address = (UINT32 *) ((UINTN) IVT_BASE + VectorNumber * 4);\r |
bcecde14 | 53 | CachedVectorAddress[VectorNumber] = *Address;\r |
54 | return EFI_SUCCESS;\r | |
55 | }\r | |
56 | \r | |
57 | /**\r | |
0a6f4824 LG |
58 | Get interrupt vector address according to IVT number.\r |
59 | \r | |
bcecde14 | 60 | @param VectorNumber Given IVT number\r |
0a6f4824 | 61 | \r |
bcecde14 | 62 | @return cached interrupt vector address.\r |
63 | **/\r | |
64 | EFI_STATUS\r | |
65 | RestoreCachedVectorAddress (\r | |
66 | UINT8 VectorNumber\r | |
67 | )\r | |
68 | {\r | |
69 | UINT32 *Address;\r | |
70 | \r | |
aa5f60ae | 71 | Address = (UINT32 *) ((UINTN) IVT_BASE + VectorNumber * 4);\r |
bcecde14 | 72 | *Address = CachedVectorAddress[VectorNumber];\r |
73 | return EFI_SUCCESS;\r | |
74 | }\r | |
75 | \r | |
76 | /**\r | |
0a6f4824 LG |
77 | Print Undi loader table.\r |
78 | \r | |
79 | @param UndiLoaderStructure Point to Undi Loader table structure.\r | |
bcecde14 | 80 | \r |
bcecde14 | 81 | **/\r |
82 | VOID\r | |
83 | Print_Undi_Loader_Table (\r | |
84 | VOID *UndiLoaderStructure\r | |
85 | )\r | |
86 | {\r | |
87 | UNDI_LOADER_T *DisplayPointer;\r | |
88 | \r | |
89 | DisplayPointer = (UNDI_LOADER_T *) UndiLoaderStructure;\r | |
90 | \r | |
91 | DEBUG ((DEBUG_NET, "Before Parsing the table contents, the table itself lives\n"));\r | |
92 | DEBUG ((DEBUG_NET, "\tat the address 0x%X\n\r", (UINT32)(UINTN) UndiLoaderStructure));\r | |
93 | \r | |
94 | DEBUG ((DEBUG_NET, "\n\rStatus = 0x%X\n\r", DisplayPointer->Status));\r | |
95 | DEBUG ((DEBUG_NET, "\t_AX_= 0x%X\n\r", DisplayPointer->Ax));\r | |
96 | DEBUG ((DEBUG_NET, "\t_BX_= 0x%X\n\r", DisplayPointer->Bx));\r | |
97 | DEBUG ((DEBUG_NET, "\t_DX_= 0x%X\n\r", DisplayPointer->Dx));\r | |
98 | DEBUG ((DEBUG_NET, "\t_DI_= 0x%X\n\r", DisplayPointer->Di));\r | |
99 | DEBUG ((DEBUG_NET, "\t_ES_= 0x%X\n\r", DisplayPointer->Es));\r | |
100 | DEBUG ((DEBUG_NET, "\tUNDI_DS= 0x%X\n\r", DisplayPointer->Undi_Ds));\r | |
101 | DEBUG ((DEBUG_NET, "\tUNDI_CS= 0x%X\n\r", DisplayPointer->Undi_Cs));\r | |
102 | DEBUG ((DEBUG_NET, "\tPXEptr:SEG= 0x%X\n\r", (UINT16) DisplayPointer->PXEptr.Segment));\r | |
103 | DEBUG ((DEBUG_NET, "\tPXEptr:OFF= 0x%X\n\r", (UINT16) DisplayPointer->PXEptr.Offset));\r | |
104 | DEBUG ((DEBUG_NET, "\tPXENVptr:SEG= 0x%X\n\r", (UINT16) DisplayPointer->PXENVptr.Segment));\r | |
105 | DEBUG ((DEBUG_NET, "\tPXENVptr:OFF= 0x%X\n\r", (UINT16) DisplayPointer->PXENVptr.Offset));\r | |
106 | }\r | |
107 | \r | |
108 | /**\r | |
109 | Simple table dumper. The ROMID table is necessary in order to effect\r | |
110 | the "Early UNDI" trick. Herein, the UNDI layer can be loaded in the\r | |
0a6f4824 | 111 | pre-boot phase without having to download a Network Boot Program\r |
bcecde14 | 112 | across the wire. It is required in the implementation in that we\r |
113 | are not using PXE.\r | |
114 | \r | |
115 | @param RomIDStructure Point to RomID structure.\r | |
0a6f4824 | 116 | \r |
bcecde14 | 117 | **/\r |
118 | VOID\r | |
119 | Print_ROMID_Table (\r | |
120 | IN VOID *RomIDStructure\r | |
121 | )\r | |
122 | {\r | |
123 | UNDI_ROMID_T *DisplayPointer;\r | |
124 | \r | |
125 | DisplayPointer = (UNDI_ROMID_T *) RomIDStructure;\r | |
126 | \r | |
127 | DEBUG ((DEBUG_NET, "Before Parsing the table contents, the table itself lives\n"));\r | |
128 | DEBUG ((DEBUG_NET, "\tat the address 0x%X\n\r", (UINT32)(UINTN) RomIDStructure));\r | |
129 | \r | |
130 | DEBUG (\r | |
131 | (DEBUG_NET,\r | |
132 | "\n\rROMID %c%c%c%c\n\r",\r | |
133 | DisplayPointer->Signature[0],\r | |
134 | DisplayPointer->Signature[1],\r | |
135 | DisplayPointer->Signature[2],\r | |
136 | DisplayPointer->Signature[3])\r | |
137 | );\r | |
138 | \r | |
139 | DEBUG (\r | |
140 | (DEBUG_NET,\r | |
141 | "Length of this structure in bytes = 0x%X\n\r",\r | |
142 | DisplayPointer->StructLength)\r | |
143 | );\r | |
144 | DEBUG (\r | |
145 | (DEBUG_NET,\r | |
146 | "Use to make byte checksum of this structure == zero is = 0x%X\n\r",\r | |
147 | DisplayPointer->StructCksum)\r | |
148 | );\r | |
149 | DEBUG (\r | |
150 | (DEBUG_NET,\r | |
151 | "Structure format revision number= 0x%X\n\r",\r | |
152 | DisplayPointer->StructRev)\r | |
153 | );\r | |
154 | DEBUG (\r | |
155 | (DEBUG_NET,\r | |
156 | "API Revision number = 0x%X 0x%X 0x%X\n\r",\r | |
157 | DisplayPointer->UNDI_Rev[0],\r | |
158 | DisplayPointer->UNDI_Rev[1],\r | |
159 | DisplayPointer->UNDI_Rev[2])\r | |
160 | );\r | |
161 | DEBUG (\r | |
162 | (DEBUG_NET,\r | |
163 | "Offset of UNDI loader routine in the option ROM image= 0x%X\n\r",\r | |
164 | DisplayPointer->UNDI_Loader)\r | |
165 | );\r | |
166 | DEBUG ((DEBUG_NET, "From the data above, the absolute entry point of the UNDI loader is\n\r"));\r | |
167 | DEBUG (\r | |
168 | (DEBUG_NET,\r | |
169 | "\tat address 0x%X\n\r",\r | |
170 | (UINT32) (DisplayPointer->UNDI_Loader + ((UINT32) (UINTN)(DisplayPointer - 0x20) & 0xFFFF0)))\r | |
171 | );\r | |
172 | DEBUG ((DEBUG_NET, "Minimum stack segment size, in bytes,\n\r"));\r | |
173 | DEBUG (\r | |
174 | (DEBUG_NET,\r | |
175 | "needed to load and run the UNDI= 0x%X \n\r",\r | |
176 | DisplayPointer->StackSize)\r | |
177 | );\r | |
178 | DEBUG (\r | |
179 | (DEBUG_NET,\r | |
180 | "UNDI runtime code and data = 0x%X\n\r",\r | |
181 | DisplayPointer->DataSize)\r | |
182 | );\r | |
183 | DEBUG (\r | |
184 | (DEBUG_NET,\r | |
185 | "Segment size = 0x%X\n\r",\r | |
186 | DisplayPointer->CodeSize)\r | |
187 | );\r | |
188 | DEBUG (\r | |
189 | (DEBUG_NET,\r | |
190 | "\n\rBus Type = %c%c%c%c\n\r",\r | |
191 | DisplayPointer->BusType[0],\r | |
192 | DisplayPointer->BusType[1],\r | |
193 | DisplayPointer->BusType[2],\r | |
194 | DisplayPointer->BusType[3])\r | |
195 | );\r | |
196 | }\r | |
197 | \r | |
198 | /**\r | |
199 | Print PXE table.\r | |
200 | \r | |
201 | @param PxeTable Point to PXE table structure\r | |
0a6f4824 | 202 | \r |
bcecde14 | 203 | **/\r |
204 | VOID\r | |
205 | Print_PXE_Table (\r | |
206 | IN VOID* PxeTable\r | |
207 | )\r | |
208 | {\r | |
209 | PXE_T *DisplayPointer;\r | |
210 | UINTN Index;\r | |
211 | UINT8 *Dptr;\r | |
212 | \r | |
213 | DisplayPointer = (PXE_T *) PxeTable;\r | |
214 | Dptr = (UINT8 *) PxeTable;\r | |
215 | \r | |
216 | DEBUG ((DEBUG_NET, "This is the PXE table at address 0x%X\n\r", PxeTable));\r | |
217 | \r | |
218 | DEBUG ((DEBUG_NET, "A dump of the 0x%X bytes is:\n\r", sizeof (PXE_T)));\r | |
219 | \r | |
220 | for (Index = 0; Index < sizeof (PXE_T); Index++) {\r | |
221 | if ((Index % 0x10) == 0) {\r | |
222 | DEBUG ((DEBUG_NET, "\t\n\r"));\r | |
223 | }\r | |
224 | \r | |
225 | DEBUG ((DEBUG_NET, " 0x%X ", *Dptr++));\r | |
226 | }\r | |
227 | \r | |
228 | DEBUG ((DEBUG_NET, "\n\r"));\r | |
229 | DEBUG (\r | |
230 | (DEBUG_NET,\r | |
231 | "\n\rPXE %c%c%c%c%c%c\n\r",\r | |
232 | DisplayPointer->Signature[0],\r | |
233 | DisplayPointer->Signature[1],\r | |
234 | DisplayPointer->Signature[2],\r | |
235 | DisplayPointer->Signature[3])\r | |
236 | );\r | |
237 | DEBUG (\r | |
238 | (DEBUG_NET,\r | |
239 | "Length of this structure in bytes = 0x%X\n\r",\r | |
240 | DisplayPointer->StructLength)\r | |
241 | );\r | |
242 | DEBUG (\r | |
243 | (DEBUG_NET,\r | |
244 | "Use to make byte checksum of this structure == zero is = 0x%X\n\r",\r | |
245 | DisplayPointer->StructCksum)\r | |
246 | );\r | |
247 | DEBUG (\r | |
248 | (DEBUG_NET,\r | |
249 | "Structure format revision number = 0x%X\n\r",\r | |
250 | DisplayPointer->StructRev)\r | |
251 | );\r | |
252 | DEBUG (\r | |
253 | (DEBUG_NET,\r | |
254 | "Must be zero, is equal to 0x%X\n\r",\r | |
255 | DisplayPointer->Reserved1)\r | |
256 | );\r | |
257 | DEBUG (\r | |
258 | (DEBUG_NET,\r | |
259 | "Far pointer to UNDI ROMID = 0x%X\n\r",\r | |
260 | (UINT32) (DisplayPointer->Undi.Segment << 0x4 | DisplayPointer->Undi.Offset))\r | |
261 | );\r | |
262 | DEBUG (\r | |
263 | (DEBUG_NET,\r | |
264 | "Far pointer to base-code ROMID = 0x%X\n\r",\r | |
265 | (UINT32) ((DisplayPointer->Base.Segment << 0x04) | DisplayPointer->Base.Offset))\r | |
266 | );\r | |
267 | DEBUG ((DEBUG_NET, "16bit stack segment API entry point. This will be seg:off in \n\r"));\r | |
268 | DEBUG (\r | |
269 | (DEBUG_NET,\r | |
270 | "real mode and sel:off in 16:16 protected mode = 0x%X:0x%X\n\r",\r | |
271 | DisplayPointer->EntryPointSP.Segment,\r | |
272 | DisplayPointer->EntryPointSP.Offset)\r | |
273 | );\r | |
274 | \r | |
275 | DEBUG ((DEBUG_NET, "\n\tNOTE to the implementer\n\tThis is the entry to use for call-ins\n\r"));\r | |
276 | \r | |
277 | DEBUG ((DEBUG_NET, "32bit stack Segment API entry point. This will be sel:off. \n\r"));\r | |
278 | DEBUG (\r | |
279 | (DEBUG_NET,\r | |
280 | "In real mode, sel == 0 = 0x%X:0x%X\n\r",\r | |
281 | DisplayPointer->EntryPointESP.Segment,\r | |
282 | DisplayPointer->EntryPointESP.Offset)\r | |
283 | );\r | |
284 | DEBUG (\r | |
285 | (DEBUG_NET,\r | |
286 | "Reserved2 value, must be zero, is equal to 0x%X\n\r",\r | |
287 | DisplayPointer->Reserved2)\r | |
288 | );\r | |
289 | DEBUG (\r | |
290 | (DEBUG_NET,\r | |
291 | "Number of segment descriptors in this structur = 0x%X\n\r",\r | |
292 | (UINT8) DisplayPointer->SegDescCnt)\r | |
293 | );\r | |
294 | DEBUG (\r | |
295 | (DEBUG_NET,\r | |
296 | "First segment descriptor in GDT assigned to PXE = 0x%X\n\r",\r | |
297 | (UINT16) DisplayPointer->FirstSelector)\r | |
298 | );\r | |
299 | DEBUG (\r | |
300 | (DEBUG_NET,\r | |
301 | "The Stack is \n\r\tSegment Addr = 0x%X\n\r\tPhysical Addr = 0x%X\n\r\tSeg Size = 0x%X\n\r",\r | |
302 | (UINT16) DisplayPointer->Stack.Seg_Addr,\r | |
303 | (UINT32) DisplayPointer->Stack.Phy_Addr,\r | |
304 | (UINT16) DisplayPointer->Stack.Seg_Size)\r | |
305 | );\r | |
306 | DEBUG (\r | |
307 | (DEBUG_NET,\r | |
308 | "The UNDIData is \n\r\tSegment Addr = 0x%X\n\r\tPhysical Addr = 0x%X\n\r\tSeg Size = 0x%X\n\r",\r | |
309 | (UINT16) DisplayPointer->UNDIData.Seg_Addr,\r | |
310 | (UINT32) DisplayPointer->UNDIData.Phy_Addr,\r | |
311 | (UINT16) DisplayPointer->UNDIData.Seg_Size)\r | |
312 | );\r | |
313 | DEBUG (\r | |
314 | (DEBUG_NET,\r | |
315 | "The UNDICodeWrite is \n\r\tSegment Addr = 0x%X\n\r\tPhysical Addr = 0x%X\n\r\tSeg Size = 0x%X\n\r",\r | |
316 | (UINT16) DisplayPointer->UNDICode.Seg_Addr,\r | |
317 | (UINT32) DisplayPointer->UNDICode.Phy_Addr,\r | |
318 | (UINT16) DisplayPointer->UNDICode.Seg_Size)\r | |
319 | );\r | |
320 | DEBUG (\r | |
321 | (DEBUG_NET,\r | |
322 | "The Stack is \n\r\tSegment Addr = 0x%X\n\r\tPhysical Addr = 0x%X\n\r\tSeg Size = 0x%X\n\r",\r | |
323 | (UINT16) DisplayPointer->UNDICodeWrite.Seg_Addr,\r | |
324 | (UINT32) DisplayPointer->UNDICodeWrite.Phy_Addr,\r | |
325 | (UINT16) DisplayPointer->UNDICodeWrite.Seg_Size)\r | |
326 | );\r | |
327 | DEBUG (\r | |
328 | (DEBUG_NET,\r | |
329 | "The BC_Data is \n\r\tSegment Addr = 0x%X\n\r\tPhysical Addr = 0x%X\n\r\tSeg Size = 0x%X\n\r",\r | |
330 | (UINT16) DisplayPointer->BC_Data.Seg_Addr,\r | |
331 | (UINT32) DisplayPointer->BC_Data.Phy_Addr,\r | |
332 | (UINT16) DisplayPointer->BC_Data.Seg_Size)\r | |
333 | );\r | |
334 | DEBUG (\r | |
335 | (DEBUG_NET,\r | |
336 | "The BC_Code is \n\r\tSegment Addr = 0x%X\n\r\tPhysical Addr = 0x%X\n\r\tSeg Size = 0x%X\n\r",\r | |
337 | (UINT16) DisplayPointer->BC_Code.Seg_Addr,\r | |
338 | (UINT32) DisplayPointer->BC_Code.Phy_Addr,\r | |
339 | (UINT16) DisplayPointer->BC_Code.Seg_Size)\r | |
340 | );\r | |
341 | DEBUG (\r | |
342 | (DEBUG_NET,\r | |
343 | "The BC_CodeWrite is \n\r\tSegment Addr = 0x%X\n\r\tPhysical Addr = 0x%X\n\r\tSeg Size = 0x%X\n\r",\r | |
344 | (UINT16) DisplayPointer->BC_CodeWrite.Seg_Addr,\r | |
345 | (UINT32) DisplayPointer->BC_CodeWrite.Phy_Addr,\r | |
346 | (UINT16) DisplayPointer->BC_CodeWrite.Seg_Size)\r | |
347 | );\r | |
348 | }\r | |
349 | \r | |
350 | /**\r | |
351 | Print PXENV table.\r | |
352 | \r | |
353 | @param PxenvTable Point to PXENV\r | |
0a6f4824 | 354 | \r |
bcecde14 | 355 | **/\r |
356 | VOID\r | |
357 | Print_PXENV_Table (\r | |
358 | IN VOID *PxenvTable\r | |
359 | )\r | |
360 | {\r | |
361 | PXENV_T *DisplayPointer;\r | |
362 | \r | |
363 | DisplayPointer = (PXENV_T *) PxenvTable;\r | |
364 | \r | |
365 | DEBUG (\r | |
366 | (DEBUG_NET,\r | |
367 | "\n\rPXENV+ %c%c%c%c%c%c\n\r",\r | |
368 | DisplayPointer->Signature[0],\r | |
369 | DisplayPointer->Signature[1],\r | |
370 | DisplayPointer->Signature[2],\r | |
371 | DisplayPointer->Signature[3],\r | |
372 | DisplayPointer->Signature[4],\r | |
373 | DisplayPointer->Signature[5])\r | |
374 | );\r | |
375 | \r | |
376 | DEBUG (\r | |
377 | (DEBUG_NET,\r | |
378 | "PXE version number. \n\r\tLSB is minor version. \n\r\tMSB is major version = 0x%X\n\r",\r | |
379 | DisplayPointer->Version)\r | |
380 | );\r | |
381 | DEBUG (\r | |
382 | (DEBUG_NET,\r | |
383 | "Length of PXE-2.0 Entry Point structure in bytes = 0x%X\n\r",\r | |
384 | DisplayPointer->StructLength)\r | |
385 | );\r | |
386 | DEBUG ((DEBUG_NET, "Used to make structure checksum equal zero is now = 0x%X\n\r", DisplayPointer->StructCksum));\r | |
387 | DEBUG ((DEBUG_NET, "Real mode API entry point segment:Offset. = 0x%X\n\r", DisplayPointer->RMEntry));\r | |
388 | DEBUG ((DEBUG_NET, "Protected mode API entry point = 0x%X\n\r", DisplayPointer->PMEntryOff));\r | |
389 | DEBUG ((DEBUG_NET, " segment:Offset. This will always be zero. \n\r"));\r | |
390 | DEBUG ((DEBUG_NET, "Protected mode API calls = 0x%X\n\r", DisplayPointer->PMEntrySeg));\r | |
391 | DEBUG ((DEBUG_NET, "Real mode stack segment = 0x%X\n\r", DisplayPointer->StackSeg));\r | |
392 | DEBUG ((DEBUG_NET, "Stack segment size in bytes = 0x%X\n\r", DisplayPointer->StackSize));\r | |
393 | DEBUG ((DEBUG_NET, "Real mode base-code code segment = 0x%X\n\r", DisplayPointer->BaseCodeSeg));\r | |
394 | DEBUG ((DEBUG_NET, "Base-code code segment size = 0x%X\n\r", DisplayPointer->BaseCodeSize));\r | |
395 | DEBUG ((DEBUG_NET, "Real mode base-code data segment = 0x%X\n\r", DisplayPointer->BaseDataSeg));\r | |
396 | DEBUG ((DEBUG_NET, "Base-code data segment size = 0x%X\n\r", DisplayPointer->BaseDataSize));\r | |
397 | \r | |
398 | DEBUG (\r | |
399 | (DEBUG_NET,\r | |
400 | "UNDI code segment size in bytes = 0x%X\n\r",\r | |
401 | DisplayPointer->UNDICodeSize)\r | |
402 | );\r | |
403 | DEBUG (\r | |
404 | (DEBUG_NET,\r | |
405 | "Real mode segment:Offset pointer \n\r\tto PXE Runtime ID structure, address = 0x%X\n\r",\r | |
406 | DisplayPointer->RuntimePtr)\r | |
407 | );\r | |
408 | DEBUG (\r | |
409 | (\r | |
410 | DEBUG_NET,\r | |
411 | "From above, we have a linear address of 0x%X\n\r",\r | |
412 | (UINT32)\r | |
413 | (\r | |
414 | ((UINT32)(UINTN)(DisplayPointer->RuntimePtr) & 0xFFFF) +\r | |
415 | (((UINT32)(UINTN)(DisplayPointer->RuntimePtr) & 0xFFFF0000) >> 12)\r | |
416 | )\r | |
417 | )\r | |
418 | );\r | |
419 | }\r | |
420 | \r | |
421 | \r | |
422 | #define OPTION_ROM_PTR ((OPTION_ROM_HEADER *) RomAddress)\r | |
423 | \r | |
424 | /**\r | |
425 | If available, launch the BaseCode from a NIC option ROM.\r | |
426 | This should install the !PXE and PXENV+ structures in memory for\r | |
427 | subsequent use.\r | |
0a6f4824 | 428 | \r |
bcecde14 | 429 | \r |
430 | @param SimpleNetworkDevice Simple network device instance\r | |
431 | @param RomAddress The ROM base address for NIC rom.\r | |
0a6f4824 LG |
432 | \r |
433 | @retval EFI_NOT_FOUND The check sum does not match\r | |
434 | @retval EFI_NOT_FOUND Rom ID offset is wrong\r | |
435 | @retval EFI_NOT_FOUND No Rom ID structure is found\r | |
bcecde14 | 436 | **/\r |
437 | EFI_STATUS\r | |
438 | LaunchBaseCode (\r | |
439 | EFI_SIMPLE_NETWORK_DEV *SimpleNetworkDevice,\r | |
440 | UINTN RomAddress\r | |
441 | )\r | |
442 | {\r | |
443 | EFI_STATUS Status;\r | |
444 | EFI_IA32_REGISTER_SET InOutRegs;\r | |
445 | UNDI_ROMID_T *RomIdTableAddress;\r | |
446 | UNDI_LOADER_T *UndiLoaderTable;\r | |
447 | UINT16 Segment;\r | |
448 | UINT16 *StackPointer;\r | |
449 | VOID *Buffer;\r | |
450 | UINTN Size;\r | |
451 | PXE_T *Pxe;\r | |
452 | UINT32 RomLength;\r | |
453 | UINTN PciSegment;\r | |
454 | UINTN Bus;\r | |
455 | UINTN Device;\r | |
456 | UINTN Function;\r | |
457 | BOOLEAN ThunkFailed;\r | |
458 | \r | |
459 | DEBUG ((DEBUG_NET, "\n\r\n\rCheck for the UNDI ROMID Signature\n\r"));\r | |
460 | \r | |
461 | //\r | |
462 | // paranoia - check structures for validity\r | |
463 | //\r | |
464 | RomLength = OPTION_ROM_PTR->ROMlength << 9;\r | |
465 | if (CalculateSum8 ((UINT8 *) RomAddress, RomLength) != 0) {\r | |
466 | DEBUG ((DEBUG_ERROR, "ROM Header Checksum Error\n\r"));\r | |
467 | return EFI_NOT_FOUND;\r | |
468 | }\r | |
469 | \r | |
470 | RomIdTableAddress = (UNDI_ROMID_T *) (RomAddress + OPTION_ROM_PTR->PxeRomIdOffset);\r | |
471 | \r | |
aa5f60ae | 472 | if (((UINT32)OPTION_ROM_PTR->PxeRomIdOffset + RomIdTableAddress->StructLength) > RomLength) {\r |
bcecde14 | 473 | DEBUG ((DEBUG_ERROR, "ROM ID Offset Error\n\r"));\r |
474 | return EFI_NOT_FOUND;\r | |
475 | }\r | |
476 | //\r | |
477 | // see if this is a header for an UNDI ROM ID structure (vs. a $BC$ or BUSD type)\r | |
478 | //\r | |
479 | if (CompareMem (RomIdTableAddress->Signature, UNDI_ROMID_SIG, sizeof RomIdTableAddress->Signature) != 0) {\r | |
480 | DEBUG ((DEBUG_ERROR, "No ROM ID Structure found....\n\r"));\r | |
481 | return EFI_NOT_FOUND;\r | |
482 | //\r | |
483 | // its not - keep looking\r | |
484 | //\r | |
485 | }\r | |
486 | \r | |
487 | if (CalculateSum8 ((UINT8 *) RomIdTableAddress, RomIdTableAddress->StructLength) != 0) {\r | |
488 | DEBUG ((DEBUG_ERROR, "ROM ID Checksum Error\n\r"));\r | |
489 | return EFI_NOT_FOUND;\r | |
490 | }\r | |
491 | \r | |
492 | Print_ROMID_Table (RomIdTableAddress);\r | |
493 | \r | |
494 | DEBUG (\r | |
495 | (DEBUG_NET,\r | |
496 | "The ROM ID is located at 0x%X\n\r",\r | |
497 | RomIdTableAddress)\r | |
498 | );\r | |
499 | \r | |
500 | DEBUG (\r | |
501 | (DEBUG_NET,\r | |
502 | "With an UNDI Loader located at 0x%X\n\r",\r | |
503 | RomAddress + RomIdTableAddress->UNDI_Loader)\r | |
504 | );\r | |
505 | \r | |
506 | //\r | |
507 | // found an UNDI ROM ID structure\r | |
508 | //\r | |
509 | SimpleNetworkDevice->Nii.ImageAddr = RomAddress;\r | |
510 | SimpleNetworkDevice->Nii.ImageSize = RomLength;\r | |
511 | SimpleNetworkDevice->Nii.MajorVer = RomIdTableAddress->UNDI_Rev[2];\r | |
512 | SimpleNetworkDevice->Nii.MinorVer = RomIdTableAddress->UNDI_Rev[1];\r | |
513 | \r | |
514 | DEBUG ((DEBUG_NET, "Allocate area for the UNDI_LOADER_T structure\n\r"));\r | |
515 | //\r | |
516 | // Allocate 1 page below 1MB to put real mode thunk code in\r | |
517 | //\r | |
518 | // Undi Loader Table is a PXE Specification prescribed data structure\r | |
519 | // that is used to transfer information into and out of the Undi layer.\r | |
520 | // Note how it must be located below 1 MB.\r | |
521 | //\r | |
522 | SimpleNetworkDevice->UndiLoaderTablePages = EFI_SIZE_TO_PAGES (PARAGRAPH_SIZE + sizeof (UNDI_LOADER_T));\r | |
523 | Status = BiosSnp16AllocatePagesBelowOneMb (\r | |
524 | SimpleNetworkDevice->UndiLoaderTablePages,\r | |
525 | &SimpleNetworkDevice->UndiLoaderTable\r | |
526 | );\r | |
527 | if (EFI_ERROR (Status)) {\r | |
528 | DEBUG ((DEBUG_ERROR, "We had a failure in AllocatePages, status code = 0x%X\n", Status));\r | |
529 | return EFI_OUT_OF_RESOURCES;\r | |
530 | }\r | |
531 | \r | |
532 | UndiLoaderTable = SimpleNetworkDevice->UndiLoaderTable;\r | |
533 | \r | |
534 | DEBUG ((DEBUG_NET, "Allocate area for the real-mode stack whose sole purpose\n\r"));\r | |
535 | DEBUG ((DEBUG_NET, "in life right now is to store a SEG:OFFSET combo pair that\n\r"));\r | |
536 | DEBUG ((DEBUG_NET, "points to an Undi_Loader_t table structure\n\r"));\r | |
537 | \r | |
538 | Size = 0x100;\r | |
539 | Status = gBS->AllocatePool (EfiLoaderData, Size, &Buffer);\r | |
540 | if (EFI_ERROR (Status)) {\r | |
541 | return Status;\r | |
542 | }\r | |
543 | //\r | |
544 | // Now we want to put a pointer to the Under Loader Table in our MemPage\r | |
545 | // Buffer. This will be the argument stack for the call into the Undi Loader\r | |
546 | //\r | |
547 | StackPointer = (UINT16 *) Buffer;\r | |
548 | *StackPointer++ = TO_OFFSET (UndiLoaderTable);\r | |
549 | //\r | |
550 | // push the OFFSET\r | |
551 | //\r | |
552 | *StackPointer++ = TO_SEGMENT (UndiLoaderTable);\r | |
553 | //\r | |
554 | // push the SEGMENT\r | |
555 | //\r | |
556 | StackPointer = (UINT16 *) Buffer;\r | |
557 | //\r | |
558 | // reset the stack pointer\r | |
559 | //\r | |
560 | DEBUG (\r | |
561 | (DEBUG_NET,\r | |
562 | "After the fixups, the stack pointer is 0x%X\n\r",\r | |
563 | (UINT64)(UINTN) StackPointer)\r | |
564 | );\r | |
565 | \r | |
566 | //\r | |
567 | // Allocate memory for the Deployed UNDI.\r | |
568 | // The UNDI is essentially telling us how much space it needs, and\r | |
569 | // it is up to the EFI driver to allocate sufficient, boot-time\r | |
570 | // persistent resources for the call\r | |
571 | //\r | |
572 | SimpleNetworkDevice->DestinationDataSegmentPages = EFI_SIZE_TO_PAGES (RomIdTableAddress->DataSize);\r | |
573 | Status = BiosSnp16AllocatePagesBelowOneMb (\r | |
574 | SimpleNetworkDevice->DestinationDataSegmentPages,\r | |
575 | &SimpleNetworkDevice->DestinationDataSegment\r | |
576 | );\r | |
577 | if (EFI_ERROR (Status)) {\r | |
578 | DEBUG ((DEBUG_ERROR, "We had a failure in AllocatePages, status code = 0x%X\n", Status));\r | |
579 | return Status;\r | |
580 | }\r | |
581 | \r | |
582 | UndiLoaderTable->Undi_Ds = (UINT16) ((UINTN) SimpleNetworkDevice->DestinationDataSegment >> 4);\r | |
583 | \r | |
584 | //\r | |
585 | // Allocate memory for the Deployed UNDI stack\r | |
586 | // The UNDI is essentially telling us how much space it needs, and\r | |
587 | // it is up to the EFI driver to allocate sufficient, boot-time\r | |
588 | // persistent resources for the call\r | |
589 | //\r | |
590 | SimpleNetworkDevice->DestinationStackSegmentPages = EFI_SIZE_TO_PAGES (RomIdTableAddress->StackSize);\r | |
591 | Status = BiosSnp16AllocatePagesBelowOneMb (\r | |
592 | SimpleNetworkDevice->DestinationStackSegmentPages,\r | |
593 | &SimpleNetworkDevice->DestinationStackSegment\r | |
594 | );\r | |
595 | if (EFI_ERROR (Status)) {\r | |
596 | DEBUG ((DEBUG_ERROR, "We had a failure in AllocatePages, status code = 0x%X\n", Status));\r | |
597 | return Status;\r | |
598 | }\r | |
599 | //\r | |
600 | // Allocate memory for the Deployed UNDI.\r | |
601 | // The UNDI is essentially telling us how much space it needs, and\r | |
602 | // it is up to the EFI driver to allocate sufficient, boot-time\r | |
603 | // persistent resources for the call\r | |
604 | //\r | |
605 | SimpleNetworkDevice->DestinationCodeSegmentPages = EFI_SIZE_TO_PAGES (RomIdTableAddress->CodeSize);\r | |
606 | Status = BiosSnp16AllocatePagesBelowOneMb (\r | |
607 | SimpleNetworkDevice->DestinationCodeSegmentPages,\r | |
608 | &SimpleNetworkDevice->DestinationCodeSegment\r | |
609 | );\r | |
610 | if (EFI_ERROR (Status)) {\r | |
611 | DEBUG ((DEBUG_ERROR, "We had a failure in AllocatePages, status code = 0x%X\n", Status));\r | |
612 | return Status;\r | |
613 | }\r | |
614 | \r | |
615 | UndiLoaderTable->Undi_Cs = (UINT16) ((UINTN) SimpleNetworkDevice->DestinationCodeSegment >> 4);\r | |
616 | \r | |
617 | //\r | |
618 | // these are in the Input and Output Parameter to be sent to the UNDI Loader code\r | |
619 | //\r | |
620 | UndiLoaderTable->Status = 0xAA55;\r | |
621 | //\r | |
622 | // -------------------- Changed by Michael_Huang@3Com.com -----------------\r | |
623 | // UndiLoaderTable->_AX is AX value when UNDI ROM is initialized by BIOS, it is the PCI bus device\r | |
624 | // function of the NIC. Please refer to PXE Spec for detail info.\r | |
625 | // old code is:\r | |
626 | // UndiLoaderTable->Ax = 0x0;\r | |
627 | // -----------------------------------------------------------------------\r | |
628 | //\r | |
629 | SimpleNetworkDevice->PciIo->GetLocation (\r | |
630 | SimpleNetworkDevice->PciIo,\r | |
631 | &PciSegment,\r | |
632 | &Bus,\r | |
633 | &Device,\r | |
634 | &Function\r | |
635 | );\r | |
636 | UndiLoaderTable->Ax = (UINT16) ((Bus << 0x8) | (Device << 0x3) | (Function));\r | |
637 | UndiLoaderTable->Bx = 0x0;\r | |
638 | UndiLoaderTable->Dx = 0x0;\r | |
639 | UndiLoaderTable->Di = 0x0;\r | |
640 | UndiLoaderTable->Es = 0x0;\r | |
641 | \r | |
642 | //\r | |
643 | // set these OUT values to zero in order to ensure that\r | |
644 | // uninitialized memory is not mistaken for display data\r | |
645 | //\r | |
646 | UndiLoaderTable->PXEptr.Offset = 0;\r | |
647 | UndiLoaderTable->PXEptr.Segment = 0;\r | |
648 | UndiLoaderTable->PXENVptr.Segment = 0;\r | |
649 | UndiLoaderTable->PXENVptr.Offset = 0;\r | |
650 | \r | |
651 | DEBUG (\r | |
652 | (DEBUG_INIT,\r | |
653 | "The NIC is located at Bus 0x%X, Device 0x%X, Function 0x%X\n\r",\r | |
654 | Bus,\r | |
655 | Device,\r | |
656 | Function)\r | |
657 | );\r | |
658 | \r | |
659 | //\r | |
660 | // These are the values that set up the ACTUAL IA32 machine state, whether in\r | |
661 | // Real16 in EFI32 or the IVE for IA64\r | |
662 | // register values are unused except for CS:IP and SS:SP\r | |
663 | //\r | |
664 | InOutRegs.X.AX = 0;\r | |
665 | InOutRegs.X.BX = 0;\r | |
666 | InOutRegs.X.CX = 0;\r | |
667 | InOutRegs.X.DX = 0;\r | |
668 | InOutRegs.X.SI = 0;\r | |
669 | InOutRegs.X.DI = 0;\r | |
670 | InOutRegs.X.BP = 0;\r | |
671 | InOutRegs.X.DS = 0;\r | |
672 | InOutRegs.X.ES = 0;\r | |
673 | //\r | |
674 | // just to be clean\r | |
675 | //\r | |
676 | DEBUG ((DEBUG_NET, "The way this game works is that the SS:SP +4 should point\n\r"));\r | |
677 | DEBUG ((DEBUG_NET, "to the contents of the UndiLoaderTable\n\r"));\r | |
678 | DEBUG (\r | |
679 | (DEBUG_NET,\r | |
680 | "The Undi Loader Table is at address = 0x%X\n\r",\r | |
681 | (UINT32)(UINTN) UndiLoaderTable)\r | |
682 | );\r | |
683 | DEBUG (\r | |
684 | (DEBUG_NET,\r | |
685 | "The segment and offsets are 0x%X and 0x%X, resp\n",\r | |
686 | TO_SEGMENT (UndiLoaderTable),\r | |
687 | TO_OFFSET (UndiLoaderTable))\r | |
688 | );\r | |
689 | \r | |
690 | DEBUG (\r | |
691 | (DEBUG_NET,\r | |
692 | "The Linear Address of the UNDI Loader entry is 0x%X\n",\r | |
693 | RomAddress + RomIdTableAddress->UNDI_Loader)\r | |
694 | );\r | |
695 | \r | |
696 | DEBUG (\r | |
697 | (DEBUG_NET,\r | |
698 | "The Address offset of the UNDI Loader entry is 0x%X\n",\r | |
699 | RomIdTableAddress->UNDI_Loader)\r | |
700 | );\r | |
701 | \r | |
702 | DEBUG ((DEBUG_NET, "Before the call, we have...\n\r"));\r | |
703 | Print_Undi_Loader_Table (UndiLoaderTable);\r | |
704 | \r | |
705 | Segment = ((UINT16) (RShiftU64 (RomAddress, 4) & 0xFFFF));\r | |
706 | DEBUG ((DEBUG_NET, "The Segment of the call is 0x%X\n\r", Segment));\r | |
707 | \r | |
708 | //\r | |
709 | // make the call into the UNDI Code\r | |
710 | //\r | |
711 | DEBUG ((DEBUG_INIT, "Make the call into the UNDI code now\n\r"));\r | |
712 | \r | |
713 | DEBUG ((DEBUG_NET, "\nThe 20-BIt address of the Call, and the location \n\r"));\r | |
714 | DEBUG ((DEBUG_NET, "\twhere we should be able to set a breakpoint is \n\r"));\r | |
715 | DEBUG (\r | |
716 | (DEBUG_NET,\r | |
717 | "\t\t0x%X, from SEG:OFF 0x%X:0x%X\n\r\n\r",\r | |
718 | Segment * 0x10 + RomIdTableAddress->UNDI_Loader,\r | |
719 | Segment,\r | |
720 | RomIdTableAddress->UNDI_Loader)\r | |
721 | );\r | |
722 | \r | |
723 | ThunkFailed = SimpleNetworkDevice->LegacyBios->FarCall86 (\r | |
724 | SimpleNetworkDevice->LegacyBios,\r | |
725 | Segment, // Input segment\r | |
726 | (UINT16) RomIdTableAddress->UNDI_Loader, // Offset\r | |
727 | &InOutRegs, // Ptr to Regs\r | |
728 | Buffer, // Reference to Stack\r | |
729 | Size // Size of the Stack\r | |
730 | );\r | |
731 | if (ThunkFailed) {\r | |
732 | return EFI_ABORTED;\r | |
733 | }\r | |
734 | \r | |
735 | DEBUG (\r | |
736 | (DEBUG_NET,\r | |
737 | "The return code UndiLoaderTable->Status is = 0x%X\n\r",\r | |
738 | UndiLoaderTable->Status)\r | |
739 | );\r | |
740 | DEBUG (\r | |
741 | (DEBUG_NET,\r | |
742 | "This error code should match eax, which is = 0x%X\n\r",\r | |
743 | InOutRegs.X.AX)\r | |
744 | );\r | |
745 | \r | |
9f6c5db2 EL |
746 | if ((UndiLoaderTable->Status != 0) || (InOutRegs.X.AX != PXENV_EXIT_SUCCESS)) {\r |
747 | DEBUG ((DEBUG_NET, "LaunchBaseCode exits with error, RomAddress = 0x%X\n\r", RomAddress));\r | |
748 | return EFI_ABORTED;\r | |
749 | }\r | |
750 | \r | |
bcecde14 | 751 | DEBUG ((DEBUG_NET, "Now returned from the UNDI code\n\r"));\r |
752 | \r | |
753 | DEBUG ((DEBUG_NET, "After the call, we have...\n\r"));\r | |
754 | Print_Undi_Loader_Table (UndiLoaderTable);\r | |
755 | \r | |
756 | DEBUG ((DEBUG_NET, "Display the PXENV+ and !PXE tables exported by NIC\n\r"));\r | |
aa5f60ae HW |
757 | Print_PXENV_Table ((VOID *)(((UINTN)UndiLoaderTable->PXENVptr.Segment << 4) | UndiLoaderTable->PXENVptr.Offset));\r |
758 | Print_PXE_Table ((VOID *)(((UINTN)UndiLoaderTable->PXEptr.Segment << 4) + UndiLoaderTable->PXEptr.Offset));\r | |
bcecde14 | 759 | \r |
aa5f60ae | 760 | Pxe = (PXE_T *)(((UINTN)UndiLoaderTable->PXEptr.Segment << 4) + UndiLoaderTable->PXEptr.Offset);\r |
bcecde14 | 761 | SimpleNetworkDevice->Nii.Id = (UINT64)(UINTN) Pxe;\r |
762 | \r | |
9f6c5db2 EL |
763 | gBS->FreePool (Buffer);\r |
764 | \r | |
bcecde14 | 765 | //\r |
bcecde14 | 766 | // paranoia - make sure a valid !PXE structure\r |
767 | //\r | |
768 | if (CompareMem (Pxe->Signature, PXE_SIG, sizeof Pxe->Signature) != 0) {\r | |
769 | DEBUG ((DEBUG_ERROR, "!PXE Structure not found....\n\r"));\r | |
770 | return EFI_NOT_FOUND;\r | |
771 | //\r | |
772 | // its not - keep looking\r | |
773 | //\r | |
774 | }\r | |
775 | \r | |
776 | if (CalculateSum8 ((UINT8 *) Pxe, Pxe->StructLength) != 0) {\r | |
777 | DEBUG ((DEBUG_ERROR, "!PXE Checksum Error\n\r"));\r | |
778 | return EFI_NOT_FOUND;\r | |
779 | }\r | |
780 | \r | |
781 | if (Pxe->StructLength < (UINT8 *) &Pxe->FirstSelector - (UINT8 *) Pxe->Signature) {\r | |
782 | DEBUG ((DEBUG_ERROR, "!PXE Length Error\n\r"));\r | |
783 | return EFI_NOT_FOUND;\r | |
784 | }\r | |
785 | \r | |
786 | if ((((UINTN) Pxe->Undi.Segment) << 4) + Pxe->Undi.Offset != (UINTN) RomIdTableAddress) {\r | |
787 | DEBUG ((DEBUG_ERROR, "!PXE RomId Address Error\n\r"));\r | |
788 | return EFI_NOT_FOUND;\r | |
789 | }\r | |
790 | //\r | |
791 | // This is the magic to bind the global PXE interface\r | |
792 | // This dirtiness is for non-protocol shrouded access\r | |
793 | //\r | |
794 | SimpleNetworkDevice->PxeEntrySegment = Pxe->EntryPointSP.Segment;\r | |
795 | \r | |
796 | if (SimpleNetworkDevice->PxeEntrySegment == 0) {\r | |
797 | DEBUG ((DEBUG_ERROR, "!PXE EntryPointSP segment Error\n\r"));\r | |
798 | return EFI_NOT_FOUND;\r | |
799 | }\r | |
800 | \r | |
801 | SimpleNetworkDevice->PxeEntryOffset = Pxe->EntryPointSP.Offset;\r | |
802 | \r | |
803 | DEBUG (\r | |
804 | (\r | |
805 | DEBUG_NET, "The entry point is 0x%X:0x%X\n\r", SimpleNetworkDevice->PxeEntrySegment, SimpleNetworkDevice->\r | |
806 | PxeEntryOffset\r | |
807 | )\r | |
808 | );\r | |
809 | \r | |
810 | return EFI_SUCCESS;\r | |
811 | }\r | |
812 | \r | |
813 | /**\r | |
814 | Effect the Far Call into the PXE Layer\r | |
815 | \r | |
816 | Note: When using a 32-bit stack segment do not push 32-bit words onto the stack. The PXE API\r | |
817 | services will not work, unless there are three 16-bit parameters pushed onto the stack.\r | |
818 | push DS ;Far pointer to parameter structure\r | |
819 | push offset pxe_data_call_struct ;is pushed onto stack.\r | |
820 | push Index ;UINT16 is pushed onto stack.\r | |
821 | call dword ptr (s_PXE ptr es:[di]).EntryPointSP\r | |
0a6f4824 | 822 | add sp, 6 ;Caller cleans up stack.\r |
bcecde14 | 823 | \r |
824 | @param SimpleNetworkDevice Device instance for simple network\r | |
825 | @param Table Point to parameter/retun value table for legacy far call\r | |
70d3fe9d | 826 | @param TableSize The size of parameter/return value table\r |
bcecde14 | 827 | @param CallIndex The index of legacy call.\r |
0a6f4824 LG |
828 | \r |
829 | @return EFI_STATUS\r | |
bcecde14 | 830 | **/\r |
831 | EFI_STATUS\r | |
832 | MakePxeCall (\r | |
833 | EFI_SIMPLE_NETWORK_DEV *SimpleNetworkDevice,\r | |
834 | IN OUT VOID *Table,\r | |
835 | IN UINTN TableSize,\r | |
836 | IN UINT16 CallIndex\r | |
837 | )\r | |
838 | {\r | |
839 | EFI_STATUS Status;\r | |
840 | EFI_IA32_REGISTER_SET InOutRegs;\r | |
841 | UINT16 *BPtr;\r | |
842 | VOID *Buffer;\r | |
843 | UINTN Size;\r | |
844 | VOID *MemPageAddress;\r | |
845 | UINTN Index;\r | |
846 | BOOLEAN ThunkFailed;\r | |
847 | \r | |
848 | DEBUG ((DEBUG_NET, "MakePxeCall(CallIndex = %02x, Table = %X, TableSize = %d)\n", CallIndex, Table, TableSize));\r | |
849 | \r | |
850 | if (SimpleNetworkDevice->PxeEntrySegment == 0 && SimpleNetworkDevice->PxeEntryOffset == 0) {\r | |
851 | return EFI_DEVICE_ERROR;\r | |
852 | }\r | |
853 | \r | |
854 | Status = EFI_SUCCESS;\r | |
855 | \r | |
856 | //\r | |
857 | // Allocate a transient data structure for the argument table\r | |
858 | // This table needs to have the input XXX_t structure copied into here.\r | |
859 | // The PXE UNDI can only grab this table when it's below one-MB, and\r | |
860 | // this implementation will not try to push this table on the stack\r | |
861 | // (although this is a possible optimization path since EFI always allocates\r | |
862 | // 4K as a minimum page size...............)\r | |
863 | //\r | |
864 | Status = BiosSnp16AllocatePagesBelowOneMb (\r | |
865 | TableSize / EFI_PAGE_SIZE + 1,\r | |
866 | &MemPageAddress\r | |
867 | );\r | |
868 | if (EFI_ERROR (Status)) {\r | |
869 | DEBUG ((DEBUG_ERROR, "We had a failure in AllocatePages, status code = 0x%X\n", Status));\r | |
870 | return Status;\r | |
871 | }\r | |
872 | //\r | |
873 | // Copy the > 1MB pool table to a sub-1MB buffer\r | |
874 | //\r | |
875 | CopyMem (MemPageAddress, Table, TableSize);\r | |
876 | \r | |
877 | //\r | |
878 | // Allocate space for IA-32 register context\r | |
879 | //\r | |
880 | ZeroMem (&InOutRegs, sizeof (InOutRegs));\r | |
881 | InOutRegs.X.ES = SimpleNetworkDevice->PxeEntrySegment;\r | |
882 | InOutRegs.X.DI = SimpleNetworkDevice->PxeEntryOffset;\r | |
883 | \r | |
884 | //\r | |
885 | // The game here is to build the stack which will subsequently\r | |
886 | // get copied down below 1 MB by the FarCall primitive.\r | |
887 | // This is now our working stack\r | |
888 | //\r | |
889 | Size = 6;\r | |
890 | Status = gBS->AllocatePool (\r | |
891 | EfiRuntimeServicesData,\r | |
892 | Size,\r | |
893 | &Buffer\r | |
894 | );\r | |
895 | if (EFI_ERROR (Status)) {\r | |
896 | return Status;\r | |
897 | }\r | |
898 | \r | |
899 | BPtr = (UINT16 *) Buffer;\r | |
900 | *BPtr++ = CallIndex;\r | |
901 | //\r | |
902 | // SP + 2\r | |
903 | //\r | |
904 | *BPtr++ = TO_OFFSET (MemPageAddress);\r | |
905 | *BPtr++ = TO_SEGMENT (MemPageAddress);\r | |
906 | \r | |
907 | DEBUG ((DEBUG_NET, "State before FarCall86\n"));\r | |
908 | DEBUG ((DEBUG_NET, "The Buffer is at 0x%X\n\r", Buffer));\r | |
909 | BPtr = (UINT16 *) Buffer;\r | |
910 | DEBUG ((DEBUG_NET, " Buffer = %04X %04X %04X", *BPtr, *(BPtr + 1), *(BPtr + 2)));\r | |
911 | DEBUG ((DEBUG_NET, " MemPage = "));\r | |
912 | for (Index = 0; Index < TableSize; Index++) {\r | |
913 | DEBUG ((DEBUG_NET, " %02x", *((UINT8 *) MemPageAddress + Index)));\r | |
914 | }\r | |
915 | \r | |
916 | DEBUG ((DEBUG_NET, "\n"));\r | |
917 | \r | |
918 | ThunkFailed = SimpleNetworkDevice->LegacyBios->FarCall86 (\r | |
919 | SimpleNetworkDevice->LegacyBios,\r | |
920 | SimpleNetworkDevice->PxeEntrySegment, // Input segment\r | |
921 | SimpleNetworkDevice->PxeEntryOffset,\r | |
922 | &InOutRegs, // Ptr to Regs\r | |
923 | Buffer, // Reference to Stack\r | |
924 | 6 // Size of the Stack\r | |
925 | );\r | |
926 | if (ThunkFailed) {\r | |
927 | return EFI_ABORTED;\r | |
928 | }\r | |
929 | \r | |
930 | DEBUG ((DEBUG_NET, "State after FarCall86\n"));\r | |
931 | DEBUG ((DEBUG_NET, "The Buffer is at 0x%X\n\r", Buffer));\r | |
932 | BPtr = (UINT16 *) Buffer;\r | |
933 | DEBUG ((DEBUG_NET, " Buffer = %04X %04X %04X", *BPtr, *(BPtr + 1), *(BPtr + 2)));\r | |
934 | DEBUG ((DEBUG_NET, " MemPage = "));\r | |
935 | for (Index = 0; Index < TableSize; Index++) {\r | |
936 | DEBUG ((DEBUG_NET, " %02x", *((UINT8 *) MemPageAddress + Index)));\r | |
937 | }\r | |
938 | \r | |
939 | DEBUG ((DEBUG_NET, "\n"));\r | |
940 | \r | |
941 | //\r | |
942 | // Copy the sub 1MB table to > 1MB table\r | |
943 | //\r | |
944 | CopyMem (Table, MemPageAddress, TableSize);\r | |
945 | \r | |
946 | //\r | |
947 | // For PXE UNDI call, AX contains the return status.\r | |
948 | // Convert the PXE UNDI Status to EFI_STATUS type\r | |
949 | //\r | |
950 | if (InOutRegs.X.AX == PXENV_EXIT_SUCCESS) {\r | |
951 | Status = EFI_SUCCESS;\r | |
952 | } else {\r | |
953 | Status = EFI_DEVICE_ERROR;\r | |
954 | }\r | |
955 | //\r | |
956 | // Clean up house\r | |
957 | //\r | |
958 | gBS->FreePool (Buffer);\r | |
959 | gBS->FreePages ((EFI_PHYSICAL_ADDRESS) (UINTN) MemPageAddress, TableSize / EFI_PAGE_SIZE + 1);\r | |
960 | \r | |
961 | return Status;\r | |
962 | }\r |