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fce4ecd9 | 1 | /** @file\r |
5930f541 | 2 | This PEIM will parse coreboot table in memory and report resource information into pei core.\r |
fce4ecd9 | 3 | This file contains the main entrypoint of the PEIM.\r |
5930f541 | 4 | \r |
29845447 | 5 | Copyright (c) 2014 - 2016, Intel Corporation. All rights reserved.<BR>\r |
fce4ecd9 MM |
6 | This program and the accompanying materials\r |
7 | are licensed and made available under the terms and conditions of the BSD License\r | |
8 | which accompanies this distribution. The full text of the license may be found at\r | |
9 | http://opensource.org/licenses/bsd-license.php\r | |
10 | \r | |
11 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
12 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
13 | \r | |
14 | **/\r | |
15 | #include "CbSupportPei.h"\r | |
16 | \r | |
7b7fc3e7 MM |
17 | #define LEGACY_8259_MASK_REGISTER_MASTER 0x21\r |
18 | #define LEGACY_8259_MASK_REGISTER_SLAVE 0xA1\r | |
19 | \r | |
fce4ecd9 | 20 | EFI_MEMORY_TYPE_INFORMATION mDefaultMemoryTypeInformation[] = {\r |
29845447 MM |
21 | { EfiACPIReclaimMemory, FixedPcdGet32 (PcdMemoryTypeEfiACPIReclaimMemory) },\r |
22 | { EfiACPIMemoryNVS, FixedPcdGet32 (PcdMemoryTypeEfiACPIMemoryNVS) },\r | |
23 | { EfiReservedMemoryType, FixedPcdGet32 (PcdMemoryTypeEfiReservedMemoryType) },\r | |
24 | { EfiRuntimeServicesData, FixedPcdGet32 (PcdMemoryTypeEfiRuntimeServicesData) },\r | |
25 | { EfiRuntimeServicesCode, FixedPcdGet32 (PcdMemoryTypeEfiRuntimeServicesCode) },\r | |
fce4ecd9 MM |
26 | { EfiMaxMemoryType, 0 }\r |
27 | };\r | |
28 | \r | |
29 | EFI_PEI_PPI_DESCRIPTOR mPpiBootMode[] = {\r | |
30 | {\r | |
31 | EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST,\r | |
32 | &gEfiPeiMasterBootModePpiGuid,\r | |
33 | NULL\r | |
34 | }\r | |
35 | };\r | |
36 | \r | |
37 | /**\r | |
5930f541 MM |
38 | Create memory mapped io resource hob.\r |
39 | \r | |
fce4ecd9 MM |
40 | @param MmioBase Base address of the memory mapped io range\r |
41 | @param MmioSize Length of the memory mapped io range\r | |
5930f541 | 42 | \r |
fce4ecd9 MM |
43 | **/\r |
44 | VOID\r | |
45 | BuildMemoryMappedIoRangeHob (\r | |
46 | EFI_PHYSICAL_ADDRESS MmioBase,\r | |
47 | UINT64 MmioSize\r | |
48 | )\r | |
49 | {\r | |
5930f541 | 50 | BuildResourceDescriptorHob (\r |
fce4ecd9 MM |
51 | EFI_RESOURCE_MEMORY_MAPPED_IO,\r |
52 | (EFI_RESOURCE_ATTRIBUTE_PRESENT |\r | |
53 | EFI_RESOURCE_ATTRIBUTE_INITIALIZED |\r | |
54 | EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE |\r | |
55 | EFI_RESOURCE_ATTRIBUTE_TESTED),\r | |
56 | MmioBase,\r | |
57 | MmioSize\r | |
58 | );\r | |
5930f541 | 59 | \r |
fce4ecd9 MM |
60 | BuildMemoryAllocationHob (\r |
61 | MmioBase,\r | |
62 | MmioSize,\r | |
63 | EfiMemoryMappedIO\r | |
5930f541 | 64 | );\r |
fce4ecd9 MM |
65 | }\r |
66 | \r | |
67 | /**\r | |
68 | Check the integrity of firmware volume header\r | |
69 | \r | |
70 | @param[in] FwVolHeader A pointer to a firmware volume header\r | |
71 | \r | |
72 | @retval TRUE The firmware volume is consistent\r | |
73 | @retval FALSE The firmware volume has corrupted.\r | |
74 | \r | |
75 | **/\r | |
76 | STATIC\r | |
77 | BOOLEAN\r | |
78 | IsFvHeaderValid (\r | |
79 | IN EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader\r | |
80 | )\r | |
81 | {\r | |
5930f541 MM |
82 | UINT16 Checksum;\r |
83 | \r | |
84 | // Skip nv storage fv\r | |
85 | if (CompareMem (&FwVolHeader->FileSystemGuid, &gEfiFirmwareFileSystem2Guid, sizeof(EFI_GUID)) != 0 ) {\r | |
86 | return FALSE;\r | |
87 | }\r | |
88 | \r | |
89 | if ( (FwVolHeader->Revision != EFI_FVH_REVISION) ||\r | |
90 | (FwVolHeader->Signature != EFI_FVH_SIGNATURE) ||\r | |
91 | (FwVolHeader->FvLength == ((UINTN) -1)) ||\r | |
92 | ((FwVolHeader->HeaderLength & 0x01 ) !=0) ) {\r | |
93 | return FALSE;\r | |
94 | }\r | |
95 | \r | |
96 | Checksum = CalculateCheckSum16 ((UINT16 *) FwVolHeader, FwVolHeader->HeaderLength);\r | |
fce4ecd9 MM |
97 | if (Checksum != 0) {\r |
98 | DEBUG (( DEBUG_ERROR,\r | |
99 | "ERROR - Invalid Firmware Volume Header Checksum, change 0x%04x to 0x%04x\r\n",\r | |
100 | FwVolHeader->Checksum,\r | |
101 | (UINT16)( Checksum + FwVolHeader->Checksum )));\r | |
102 | return FALSE;\r | |
103 | }\r | |
104 | \r | |
5930f541 | 105 | return TRUE;\r |
fce4ecd9 MM |
106 | }\r |
107 | \r | |
108 | /**\r | |
109 | Install FvInfo PPI and create fv hobs for remained fvs\r | |
5930f541 | 110 | \r |
fce4ecd9 MM |
111 | **/\r |
112 | VOID\r | |
113 | CbPeiReportRemainedFvs (\r | |
114 | VOID\r | |
115 | )\r | |
116 | {\r | |
5930f541 MM |
117 | UINT8* TempPtr;\r |
118 | UINT8* EndPtr;\r | |
119 | \r | |
120 | TempPtr = (UINT8* )(UINTN) PcdGet32 (PcdPayloadFdMemBase);\r | |
121 | EndPtr = (UINT8* )(UINTN) (PcdGet32 (PcdPayloadFdMemBase) + PcdGet32 (PcdPayloadFdMemSize));\r | |
122 | \r | |
123 | for (;TempPtr < EndPtr;) {\r | |
124 | if (IsFvHeaderValid ((EFI_FIRMWARE_VOLUME_HEADER* )TempPtr)) {\r | |
125 | if (TempPtr != (UINT8* )(UINTN) PcdGet32 (PcdPayloadFdMemBase)) {\r | |
126 | // Skip the PEI FV\r | |
127 | DEBUG((EFI_D_ERROR, "Found one valid fv : 0x%lx.\n", TempPtr, ((EFI_FIRMWARE_VOLUME_HEADER* )TempPtr)->FvLength));\r | |
128 | \r | |
129 | PeiServicesInstallFvInfoPpi (\r | |
130 | NULL,\r | |
131 | (VOID *) (UINTN) TempPtr,\r | |
132 | (UINT32) (UINTN) ((EFI_FIRMWARE_VOLUME_HEADER* )TempPtr)->FvLength,\r | |
133 | NULL,\r | |
134 | NULL\r | |
135 | );\r | |
136 | BuildFvHob ((EFI_PHYSICAL_ADDRESS)(UINTN) TempPtr, ((EFI_FIRMWARE_VOLUME_HEADER* )TempPtr)->FvLength);\r | |
137 | }\r | |
138 | }\r | |
139 | TempPtr += ((EFI_FIRMWARE_VOLUME_HEADER* )TempPtr)->FvLength;\r | |
140 | }\r | |
fce4ecd9 MM |
141 | }\r |
142 | \r | |
143 | /**\r | |
144 | This is the entrypoint of PEIM\r | |
5930f541 | 145 | \r |
fce4ecd9 MM |
146 | @param FileHandle Handle of the file being invoked.\r |
147 | @param PeiServices Describes the list of possible PEI Services.\r | |
148 | \r | |
5930f541 | 149 | @retval EFI_SUCCESS if it completed successfully.\r |
fce4ecd9 MM |
150 | **/\r |
151 | EFI_STATUS\r | |
152 | EFIAPI\r | |
153 | CbPeiEntryPoint (\r | |
154 | IN EFI_PEI_FILE_HANDLE FileHandle,\r | |
155 | IN CONST EFI_PEI_SERVICES **PeiServices\r | |
156 | )\r | |
157 | {\r | |
5930f541 MM |
158 | EFI_STATUS Status;\r |
159 | UINT64 LowMemorySize, HighMemorySize;\r | |
160 | UINT64 PeiMemSize = SIZE_64MB; // 64 MB\r | |
161 | EFI_PHYSICAL_ADDRESS PeiMemBase = 0;\r | |
162 | UINT32 RegEax;\r | |
fce4ecd9 MM |
163 | UINT8 PhysicalAddressBits;\r |
164 | VOID* pCbHeader;\r | |
165 | VOID* pAcpiTable;\r | |
5930f541 MM |
166 | UINT32 AcpiTableSize;\r |
167 | VOID* pSmbiosTable;\r | |
168 | UINT32 SmbiosTableSize;\r | |
169 | SYSTEM_TABLE_INFO* pSystemTableInfo;\r | |
170 | FRAME_BUFFER_INFO FbInfo;\r | |
171 | FRAME_BUFFER_INFO* pFbInfo;\r | |
172 | ACPI_BOARD_INFO* pAcpiBoardInfo;\r | |
173 | UINTN PmCtrlRegBase, PmTimerRegBase, ResetRegAddress, ResetValue;\r | |
cb3e201f GD |
174 | UINTN PmEvtBase;\r |
175 | UINTN PmGpeEnBase;\r | |
5930f541 MM |
176 | \r |
177 | LowMemorySize = 0;\r | |
178 | HighMemorySize = 0;\r | |
179 | \r | |
180 | Status = CbParseMemoryInfo (&LowMemorySize, &HighMemorySize);\r | |
181 | if (EFI_ERROR(Status))\r | |
182 | return Status;\r | |
183 | \r | |
184 | DEBUG((EFI_D_ERROR, "LowMemorySize: 0x%lx.\n", LowMemorySize));\r | |
185 | DEBUG((EFI_D_ERROR, "HighMemorySize: 0x%lx.\n", HighMemorySize));\r | |
186 | \r | |
187 | ASSERT (LowMemorySize > 0);\r | |
188 | \r | |
1d7258fa SD |
189 | //\r |
190 | // Report lower 640KB of RAM. Attribute EFI_RESOURCE_ATTRIBUTE_TESTED \r | |
191 | // is intentionally omitted to prevent erasing of the coreboot header \r | |
192 | // record before it is processed by CbParseMemoryInfo.\r | |
193 | //\r | |
5930f541 | 194 | BuildResourceDescriptorHob (\r |
fce4ecd9 MM |
195 | EFI_RESOURCE_SYSTEM_MEMORY,\r |
196 | (\r | |
197 | EFI_RESOURCE_ATTRIBUTE_PRESENT |\r | |
198 | EFI_RESOURCE_ATTRIBUTE_INITIALIZED |\r | |
fce4ecd9 MM |
199 | EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE |\r |
200 | EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE |\r | |
201 | EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE |\r | |
202 | EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE\r | |
203 | ),\r | |
204 | (EFI_PHYSICAL_ADDRESS)(0),\r | |
205 | (UINT64)(0xA0000)\r | |
206 | );\r | |
5930f541 MM |
207 | \r |
208 | \r | |
209 | BuildResourceDescriptorHob (\r | |
fce4ecd9 MM |
210 | EFI_RESOURCE_MEMORY_RESERVED,\r |
211 | (\r | |
212 | EFI_RESOURCE_ATTRIBUTE_PRESENT |\r | |
213 | EFI_RESOURCE_ATTRIBUTE_INITIALIZED |\r | |
214 | EFI_RESOURCE_ATTRIBUTE_TESTED |\r | |
215 | EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE |\r | |
216 | EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE |\r | |
217 | EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE |\r | |
218 | EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE\r | |
219 | ),\r | |
220 | (EFI_PHYSICAL_ADDRESS)(0xA0000),\r | |
221 | (UINT64)(0x60000)\r | |
222 | );\r | |
5930f541 | 223 | \r |
fce4ecd9 | 224 | BuildResourceDescriptorHob (\r |
5930f541 MM |
225 | EFI_RESOURCE_SYSTEM_MEMORY,\r |
226 | (\r | |
fce4ecd9 MM |
227 | EFI_RESOURCE_ATTRIBUTE_PRESENT |\r |
228 | EFI_RESOURCE_ATTRIBUTE_INITIALIZED |\r | |
229 | EFI_RESOURCE_ATTRIBUTE_TESTED |\r | |
230 | EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE |\r | |
231 | EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE |\r | |
232 | EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE |\r | |
233 | EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE\r | |
234 | ),\r | |
235 | (EFI_PHYSICAL_ADDRESS)(0x100000),\r | |
236 | (UINT64) (LowMemorySize - 0x100000)\r | |
237 | );\r | |
5930f541 | 238 | \r |
fce4ecd9 | 239 | if (HighMemorySize > 0) {\r |
5930f541 MM |
240 | BuildResourceDescriptorHob (\r |
241 | EFI_RESOURCE_SYSTEM_MEMORY,\r | |
242 | (\r | |
fce4ecd9 MM |
243 | EFI_RESOURCE_ATTRIBUTE_PRESENT |\r |
244 | EFI_RESOURCE_ATTRIBUTE_INITIALIZED |\r | |
245 | EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE |\r | |
246 | EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE |\r | |
247 | EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE |\r | |
248 | EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE\r | |
249 | ),\r | |
c3911fd8 | 250 | (EFI_PHYSICAL_ADDRESS)(0x100000000ULL),\r |
fce4ecd9 | 251 | HighMemorySize\r |
5930f541 MM |
252 | );\r |
253 | }\r | |
254 | \r | |
255 | //\r | |
256 | // Should be 64k aligned\r | |
257 | //\r | |
258 | PeiMemBase = (LowMemorySize - PeiMemSize) & (~(BASE_64KB - 1));\r | |
259 | \r | |
260 | DEBUG((EFI_D_ERROR, "PeiMemBase: 0x%lx.\n", PeiMemBase));\r | |
261 | DEBUG((EFI_D_ERROR, "PeiMemSize: 0x%lx.\n", PeiMemSize));\r | |
262 | \r | |
263 | Status = PeiServicesInstallPeiMemory (\r | |
264 | PeiMemBase,\r | |
265 | PeiMemSize\r | |
266 | );\r | |
267 | ASSERT_EFI_ERROR (Status);\r | |
268 | \r | |
269 | //\r | |
270 | // Set cache on the physical memory\r | |
271 | //\r | |
272 | MtrrSetMemoryAttribute (BASE_1MB, LowMemorySize - BASE_1MB, CacheWriteBack);\r | |
fce4ecd9 | 273 | MtrrSetMemoryAttribute (0, 0xA0000, CacheWriteBack);\r |
5930f541 MM |
274 | \r |
275 | //\r | |
fce4ecd9 MM |
276 | // Create Memory Type Information HOB\r |
277 | //\r | |
278 | BuildGuidDataHob (\r | |
279 | &gEfiMemoryTypeInformationGuid,\r | |
280 | mDefaultMemoryTypeInformation,\r | |
281 | sizeof(mDefaultMemoryTypeInformation)\r | |
282 | );\r | |
5930f541 MM |
283 | \r |
284 | //\r | |
285 | // Create Fv hob\r | |
286 | //\r | |
287 | CbPeiReportRemainedFvs ();\r | |
288 | \r | |
289 | BuildMemoryAllocationHob (\r | |
fce4ecd9 MM |
290 | PcdGet32 (PcdPayloadFdMemBase),\r |
291 | PcdGet32 (PcdPayloadFdMemSize),\r | |
292 | EfiBootServicesData\r | |
293 | );\r | |
5930f541 | 294 | \r |
fce4ecd9 MM |
295 | //\r |
296 | // Build CPU memory space and IO space hob\r | |
297 | //\r | |
298 | AsmCpuid (0x80000000, &RegEax, NULL, NULL, NULL);\r | |
299 | if (RegEax >= 0x80000008) {\r | |
5930f541 | 300 | AsmCpuid (0x80000008, &RegEax, NULL, NULL, NULL);\r |
fce4ecd9 MM |
301 | PhysicalAddressBits = (UINT8) RegEax;\r |
302 | } else {\r | |
303 | PhysicalAddressBits = 36;\r | |
304 | }\r | |
305 | //\r | |
306 | // Create a CPU hand-off information\r | |
5930f541 | 307 | //\r |
fce4ecd9 | 308 | BuildCpuHob (PhysicalAddressBits, 16);\r |
5930f541 | 309 | \r |
fce4ecd9 MM |
310 | //\r |
311 | // Report Local APIC range\r | |
312 | //\r | |
313 | BuildMemoryMappedIoRangeHob (0xFEC80000, SIZE_512KB);\r | |
5930f541 MM |
314 | \r |
315 | //\r | |
316 | // Boot mode\r | |
317 | //\r | |
318 | Status = PeiServicesSetBootMode (BOOT_WITH_FULL_CONFIGURATION);\r | |
fce4ecd9 | 319 | ASSERT_EFI_ERROR (Status);\r |
5930f541 | 320 | \r |
fce4ecd9 MM |
321 | Status = PeiServicesInstallPpi (mPpiBootMode);\r |
322 | ASSERT_EFI_ERROR (Status);\r | |
5930f541 | 323 | \r |
fce4ecd9 MM |
324 | //\r |
325 | // Set pcd to save the upper coreboot header in case the dxecore will\r | |
326 | // erase 0~4k memory\r | |
327 | //\r | |
328 | pCbHeader = NULL;\r | |
5930f541 MM |
329 | if ((CbParseGetCbHeader (1, &pCbHeader) == RETURN_SUCCESS)\r |
330 | && ((UINTN)pCbHeader > BASE_4KB)) {\r | |
331 | DEBUG((EFI_D_ERROR, "Actual Coreboot header: %p.\n", pCbHeader));\r | |
332 | PcdSet32 (PcdCbHeaderPointer, (UINT32)(UINTN)pCbHeader);\r | |
fce4ecd9 | 333 | }\r |
5930f541 | 334 | \r |
fce4ecd9 MM |
335 | //\r |
336 | // Create guid hob for system tables like acpi table and smbios table\r | |
337 | //\r | |
338 | pAcpiTable = NULL;\r | |
339 | AcpiTableSize = 0;\r | |
340 | pSmbiosTable = NULL;\r | |
341 | SmbiosTableSize = 0;\r | |
342 | Status = CbParseAcpiTable (&pAcpiTable, &AcpiTableSize);\r | |
343 | if (EFI_ERROR (Status)) {\r | |
5930f541 MM |
344 | // ACPI table is oblidgible\r |
345 | DEBUG ((EFI_D_ERROR, "Failed to find the required acpi table\n"));\r | |
346 | ASSERT (FALSE);\r | |
fce4ecd9 MM |
347 | }\r |
348 | CbParseSmbiosTable (&pSmbiosTable, &SmbiosTableSize);\r | |
5930f541 MM |
349 | \r |
350 | pSystemTableInfo = NULL;\r | |
351 | pSystemTableInfo = BuildGuidHob (&gUefiSystemTableInfoGuid, sizeof (SYSTEM_TABLE_INFO));\r | |
352 | ASSERT (pSystemTableInfo != NULL);\r | |
353 | pSystemTableInfo->AcpiTableBase = (UINT64) (UINTN)pAcpiTable;\r | |
354 | pSystemTableInfo->AcpiTableSize = AcpiTableSize;\r | |
355 | pSystemTableInfo->SmbiosTableBase = (UINT64) (UINTN)pSmbiosTable;\r | |
356 | pSystemTableInfo->SmbiosTableSize = SmbiosTableSize;\r | |
357 | DEBUG ((EFI_D_ERROR, "Detected Acpi Table at 0x%lx, length 0x%x\n", pSystemTableInfo->AcpiTableBase, pSystemTableInfo->AcpiTableSize));\r | |
358 | DEBUG ((EFI_D_ERROR, "Detected Smbios Table at 0x%lx, length 0x%x\n", pSystemTableInfo->SmbiosTableBase, pSystemTableInfo->SmbiosTableSize));\r | |
359 | DEBUG ((EFI_D_ERROR, "Create system table info guid hob\n"));\r | |
360 | \r | |
361 | //\r | |
362 | // Create guid hob for acpi board information\r | |
363 | //\r | |
cb3e201f | 364 | Status = CbParseFadtInfo (&PmCtrlRegBase, &PmTimerRegBase, &ResetRegAddress, &ResetValue, &PmEvtBase, &PmGpeEnBase);\r |
5930f541 MM |
365 | ASSERT_EFI_ERROR (Status);\r |
366 | pAcpiBoardInfo = NULL;\r | |
367 | pAcpiBoardInfo = BuildGuidHob (&gUefiAcpiBoardInfoGuid, sizeof (ACPI_BOARD_INFO));\r | |
368 | ASSERT (pAcpiBoardInfo != NULL);\r | |
369 | pAcpiBoardInfo->PmCtrlRegBase = (UINT64)PmCtrlRegBase;\r | |
370 | pAcpiBoardInfo->PmTimerRegBase = (UINT64)PmTimerRegBase;\r | |
371 | pAcpiBoardInfo->ResetRegAddress = (UINT64)ResetRegAddress;\r | |
372 | pAcpiBoardInfo->ResetValue = (UINT8)ResetValue;\r | |
cb3e201f GD |
373 | pAcpiBoardInfo->PmEvtBase = (UINT64)PmEvtBase;\r |
374 | pAcpiBoardInfo->PmGpeEnBase = (UINT64)PmGpeEnBase;\r | |
5930f541 MM |
375 | DEBUG ((EFI_D_ERROR, "Create acpi board info guid hob\n"));\r |
376 | \r | |
377 | //\r | |
378 | // Create guid hob for frame buffer information\r | |
379 | //\r | |
380 | ZeroMem (&FbInfo, sizeof (FRAME_BUFFER_INFO));\r | |
381 | Status = CbParseFbInfo (&FbInfo);\r | |
382 | if (!EFI_ERROR (Status)) {\r | |
383 | pFbInfo = BuildGuidHob (&gUefiFrameBufferInfoGuid, sizeof (FRAME_BUFFER_INFO));\r | |
384 | ASSERT (pSystemTableInfo != NULL);\r | |
385 | CopyMem (pFbInfo, &FbInfo, sizeof (FRAME_BUFFER_INFO));\r | |
386 | DEBUG ((EFI_D_ERROR, "Create frame buffer info guid hob\n"));\r | |
387 | }\r | |
7b7fc3e7 MM |
388 | \r |
389 | //\r | |
390 | // Mask off all legacy 8259 interrupt sources\r | |
391 | //\r | |
392 | IoWrite8 (LEGACY_8259_MASK_REGISTER_MASTER, 0xFF);\r | |
393 | IoWrite8 (LEGACY_8259_MASK_REGISTER_SLAVE, 0xFF);\r | |
394 | \r | |
fce4ecd9 MM |
395 | return EFI_SUCCESS;\r |
396 | }\r | |
397 | \r |