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1 | /** @file\r | |
2 | \r | |
3 | Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>\r | |
4 | This program and the accompanying materials \r | |
5 | are licensed and made available under the terms and conditions of the BSD License \r | |
6 | which accompanies this distribution. The full text of the license may be found at \r | |
7 | http://opensource.org/licenses/bsd-license.php \r | |
8 | \r | |
9 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r | |
10 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r | |
11 | \r | |
12 | Module Name:\r | |
13 | LegacyTable.c\r | |
14 | \r | |
15 | Abstract:\r | |
16 | \r | |
17 | Revision History:\r | |
18 | \r | |
19 | **/\r | |
20 | \r | |
21 | #include "DxeIpl.h"\r | |
22 | #include "HobGeneration.h"\r | |
23 | #include "Debug.h"\r | |
24 | \r | |
25 | #define MPS_PTR SIGNATURE_32('_','M','P','_')\r | |
26 | #define SMBIOS_PTR SIGNATURE_32('_','S','M','_')\r | |
27 | \r | |
28 | #define EBDA_BASE_ADDRESS 0x40E\r | |
29 | \r | |
30 | VOID *\r | |
31 | FindAcpiRsdPtr (\r | |
32 | VOID\r | |
33 | )\r | |
34 | {\r | |
35 | UINTN Address;\r | |
36 | UINTN Index;\r | |
37 | \r | |
38 | //\r | |
39 | // First Seach 0x0e0000 - 0x0fffff for RSD Ptr\r | |
40 | //\r | |
41 | for (Address = 0xe0000; Address < 0xfffff; Address += 0x10) {\r | |
42 | if (*(UINT64 *)(Address) == EFI_ACPI_3_0_ROOT_SYSTEM_DESCRIPTION_POINTER_SIGNATURE) {\r | |
43 | return (VOID *)Address;\r | |
44 | }\r | |
45 | }\r | |
46 | \r | |
47 | //\r | |
48 | // Search EBDA\r | |
49 | //\r | |
50 | \r | |
51 | Address = (*(UINT16 *)(UINTN)(EBDA_BASE_ADDRESS)) << 4;\r | |
52 | for (Index = 0; Index < 0x400 ; Index += 16) {\r | |
53 | if (*(UINT64 *)(Address + Index) == EFI_ACPI_3_0_ROOT_SYSTEM_DESCRIPTION_POINTER_SIGNATURE) {\r | |
54 | return (VOID *)Address;\r | |
55 | }\r | |
56 | }\r | |
57 | return NULL;\r | |
58 | }\r | |
59 | \r | |
60 | VOID *\r | |
61 | FindSMBIOSPtr (\r | |
62 | VOID\r | |
63 | )\r | |
64 | {\r | |
65 | UINTN Address;\r | |
66 | \r | |
67 | //\r | |
68 | // First Seach 0x0f0000 - 0x0fffff for SMBIOS Ptr\r | |
69 | //\r | |
70 | for (Address = 0xf0000; Address < 0xfffff; Address += 0x10) {\r | |
71 | if (*(UINT32 *)(Address) == SMBIOS_PTR) {\r | |
72 | return (VOID *)Address;\r | |
73 | }\r | |
74 | }\r | |
75 | return NULL;\r | |
76 | }\r | |
77 | \r | |
78 | VOID *\r | |
79 | FindMPSPtr (\r | |
80 | VOID\r | |
81 | )\r | |
82 | {\r | |
83 | UINTN Address;\r | |
84 | UINTN Index;\r | |
85 | \r | |
86 | //\r | |
87 | // First Seach 0x0e0000 - 0x0fffff for MPS Ptr\r | |
88 | //\r | |
89 | for (Address = 0xe0000; Address < 0xfffff; Address += 0x10) {\r | |
90 | if (*(UINT32 *)(Address) == MPS_PTR) {\r | |
91 | return (VOID *)Address;\r | |
92 | }\r | |
93 | }\r | |
94 | \r | |
95 | //\r | |
96 | // Search EBDA\r | |
97 | //\r | |
98 | \r | |
99 | Address = (*(UINT16 *)(UINTN)(EBDA_BASE_ADDRESS)) << 4;\r | |
100 | for (Index = 0; Index < 0x400 ; Index += 16) {\r | |
101 | if (*(UINT32 *)(Address + Index) == MPS_PTR) {\r | |
102 | return (VOID *)Address;\r | |
103 | }\r | |
104 | }\r | |
105 | return NULL;\r | |
106 | }\r | |
107 | \r | |
108 | #pragma pack(1)\r | |
109 | \r | |
110 | typedef struct {\r | |
111 | EFI_ACPI_DESCRIPTION_HEADER Header;\r | |
112 | UINT32 Entry;\r | |
113 | } RSDT_TABLE;\r | |
114 | \r | |
115 | typedef struct {\r | |
116 | EFI_ACPI_DESCRIPTION_HEADER Header;\r | |
117 | UINT64 Entry;\r | |
118 | } XSDT_TABLE;\r | |
119 | \r | |
120 | #pragma pack()\r | |
121 | \r | |
122 | VOID\r | |
123 | ScanTableInRSDT (\r | |
124 | RSDT_TABLE *Rsdt,\r | |
125 | UINT32 Signature,\r | |
126 | EFI_ACPI_DESCRIPTION_HEADER **FoundTable\r | |
127 | )\r | |
128 | {\r | |
129 | UINTN Index;\r | |
130 | UINT32 EntryCount;\r | |
131 | UINT32 *EntryPtr;\r | |
132 | EFI_ACPI_DESCRIPTION_HEADER *Table;\r | |
133 | \r | |
134 | *FoundTable = NULL;\r | |
135 | \r | |
136 | EntryCount = (Rsdt->Header.Length - sizeof (EFI_ACPI_DESCRIPTION_HEADER)) / sizeof(UINT32);\r | |
137 | \r | |
138 | EntryPtr = &Rsdt->Entry;\r | |
139 | for (Index = 0; Index < EntryCount; Index ++, EntryPtr ++) {\r | |
140 | Table = (EFI_ACPI_DESCRIPTION_HEADER*)((UINTN)(*EntryPtr));\r | |
141 | if (Table->Signature == Signature) {\r | |
142 | *FoundTable = Table;\r | |
143 | break;\r | |
144 | }\r | |
145 | }\r | |
146 | \r | |
147 | return;\r | |
148 | }\r | |
149 | \r | |
150 | VOID\r | |
151 | ScanTableInXSDT (\r | |
152 | XSDT_TABLE *Xsdt,\r | |
153 | UINT32 Signature,\r | |
154 | EFI_ACPI_DESCRIPTION_HEADER **FoundTable\r | |
155 | )\r | |
156 | {\r | |
157 | UINTN Index;\r | |
158 | UINT32 EntryCount;\r | |
159 | UINT64 EntryPtr;\r | |
160 | UINTN BasePtr;\r | |
161 | EFI_ACPI_DESCRIPTION_HEADER *Table;\r | |
162 | \r | |
163 | *FoundTable = NULL;\r | |
164 | \r | |
165 | EntryCount = (Xsdt->Header.Length - sizeof (EFI_ACPI_DESCRIPTION_HEADER)) / sizeof(UINT64);\r | |
166 | \r | |
167 | BasePtr = (UINTN)(&(Xsdt->Entry));\r | |
168 | for (Index = 0; Index < EntryCount; Index ++) {\r | |
169 | CopyMem (&EntryPtr, (VOID *)(BasePtr + Index * sizeof(UINT64)), sizeof(UINT64));\r | |
170 | Table = (EFI_ACPI_DESCRIPTION_HEADER*)((UINTN)(EntryPtr));\r | |
171 | if (Table->Signature == Signature) {\r | |
172 | *FoundTable = Table;\r | |
173 | break;\r | |
174 | }\r | |
175 | }\r | |
176 | \r | |
177 | return;\r | |
178 | }\r | |
179 | \r | |
180 | VOID *\r | |
181 | FindAcpiPtr (\r | |
182 | IN HOB_TEMPLATE *Hob,\r | |
183 | UINT32 Signature\r | |
184 | )\r | |
185 | {\r | |
186 | EFI_ACPI_DESCRIPTION_HEADER *AcpiTable;\r | |
187 | EFI_ACPI_3_0_ROOT_SYSTEM_DESCRIPTION_POINTER *Rsdp;\r | |
188 | RSDT_TABLE *Rsdt;\r | |
189 | XSDT_TABLE *Xsdt;\r | |
190 | \r | |
191 | AcpiTable = NULL;\r | |
192 | \r | |
193 | //\r | |
194 | // Check ACPI2.0 table\r | |
195 | //\r | |
196 | if ((int)Hob->Acpi20.Table != -1) {\r | |
197 | Rsdp = (EFI_ACPI_3_0_ROOT_SYSTEM_DESCRIPTION_POINTER *)(UINTN)Hob->Acpi20.Table;\r | |
198 | Rsdt = (RSDT_TABLE *)(UINTN)Rsdp->RsdtAddress;\r | |
199 | Xsdt = NULL;\r | |
200 | if ((Rsdp->Revision >= 2) && (Rsdp->XsdtAddress < (UINT64)(UINTN)-1)) {\r | |
201 | Xsdt = (XSDT_TABLE *)(UINTN)Rsdp->XsdtAddress;\r | |
202 | }\r | |
203 | //\r | |
204 | // Check Xsdt\r | |
205 | //\r | |
206 | if (Xsdt != NULL) {\r | |
207 | ScanTableInXSDT (Xsdt, Signature, &AcpiTable);\r | |
208 | }\r | |
209 | //\r | |
210 | // Check Rsdt\r | |
211 | //\r | |
212 | if ((AcpiTable == NULL) && (Rsdt != NULL)) {\r | |
213 | ScanTableInRSDT (Rsdt, Signature, &AcpiTable);\r | |
214 | }\r | |
215 | }\r | |
216 | \r | |
217 | //\r | |
218 | // Check ACPI1.0 table\r | |
219 | //\r | |
220 | if ((AcpiTable == NULL) && ((int)Hob->Acpi.Table != -1)) {\r | |
221 | Rsdp = (EFI_ACPI_3_0_ROOT_SYSTEM_DESCRIPTION_POINTER *)(UINTN)Hob->Acpi.Table;\r | |
222 | Rsdt = (RSDT_TABLE *)(UINTN)Rsdp->RsdtAddress;\r | |
223 | //\r | |
224 | // Check Rsdt\r | |
225 | //\r | |
226 | if (Rsdt != NULL) {\r | |
227 | ScanTableInRSDT (Rsdt, Signature, &AcpiTable);\r | |
228 | }\r | |
229 | }\r | |
230 | \r | |
231 | return AcpiTable;\r | |
232 | }\r | |
233 | \r | |
234 | #pragma pack(1)\r | |
235 | typedef struct {\r | |
236 | UINT64 BaseAddress;\r | |
237 | UINT16 PciSegmentGroupNumber;\r | |
238 | UINT8 StartBusNumber;\r | |
239 | UINT8 EndBusNumber;\r | |
240 | UINT32 Reserved;\r | |
241 | } MCFG_STRUCTURE;\r | |
242 | #pragma pack()\r | |
243 | \r | |
244 | VOID\r | |
245 | PrepareMcfgTable (\r | |
246 | IN HOB_TEMPLATE *Hob\r | |
247 | )\r | |
248 | {\r | |
249 | EFI_ACPI_DESCRIPTION_HEADER *McfgTable;\r | |
250 | MCFG_STRUCTURE *Mcfg;\r | |
251 | UINTN McfgCount;\r | |
252 | UINTN Index;\r | |
253 | \r | |
254 | McfgTable = FindAcpiPtr (Hob, EFI_ACPI_3_0_PCI_EXPRESS_MEMORY_MAPPED_CONFIGURATION_SPACE_BASE_ADDRESS_DESCRIPTION_TABLE_SIGNATURE);\r | |
255 | if (McfgTable == NULL) {\r | |
256 | return ;\r | |
257 | }\r | |
258 | \r | |
259 | Mcfg = (MCFG_STRUCTURE *)((UINTN)McfgTable + sizeof(EFI_ACPI_DESCRIPTION_HEADER) + sizeof(UINT64));\r | |
260 | McfgCount = (McfgTable->Length - sizeof(EFI_ACPI_DESCRIPTION_HEADER) - sizeof(UINT64)) / sizeof(MCFG_STRUCTURE);\r | |
261 | \r | |
262 | //\r | |
263 | // Fill PciExpress info on Hob\r | |
264 | // Note: Only for 1st segment\r | |
265 | //\r | |
266 | for (Index = 0; Index < McfgCount; Index++) {\r | |
267 | if (Mcfg[Index].PciSegmentGroupNumber == 0) {\r | |
268 | Hob->PciExpress.PciExpressBaseAddressInfo.PciExpressBaseAddress = Mcfg[Index].BaseAddress;\r | |
269 | break;\r | |
270 | }\r | |
271 | }\r | |
272 | \r | |
273 | return ;\r | |
274 | }\r | |
275 | \r | |
276 | VOID\r | |
277 | PrepareFadtTable (\r | |
278 | IN HOB_TEMPLATE *Hob\r | |
279 | )\r | |
280 | {\r | |
281 | EFI_ACPI_3_0_FIXED_ACPI_DESCRIPTION_TABLE *Fadt;\r | |
282 | EFI_ACPI_DESCRIPTION *AcpiDescription;\r | |
283 | \r | |
284 | Fadt = FindAcpiPtr (Hob, EFI_ACPI_3_0_FIXED_ACPI_DESCRIPTION_TABLE_SIGNATURE);\r | |
285 | if (Fadt == NULL) {\r | |
286 | return ;\r | |
287 | }\r | |
288 | \r | |
289 | AcpiDescription = &Hob->AcpiInfo.AcpiDescription;\r | |
290 | //\r | |
291 | // Fill AcpiDescription according to FADT\r | |
292 | // Currently, only for PM_TMR\r | |
293 | //\r | |
294 | AcpiDescription->PM_TMR_LEN = Fadt->PmTmrLen;\r | |
295 | AcpiDescription->TMR_VAL_EXT = (UINT8)((Fadt->Flags & 0x100) != 0);\r | |
296 | \r | |
297 | //\r | |
298 | // For fields not included in ACPI 1.0 spec, we get the value based on table length\r | |
299 | //\r | |
300 | if (Fadt->Header.Length >= OFFSET_OF (EFI_ACPI_3_0_FIXED_ACPI_DESCRIPTION_TABLE, XPmTmrBlk) + sizeof (Fadt->XPmTmrBlk)) {\r | |
301 | CopyMem (\r | |
302 | &AcpiDescription->PM_TMR_BLK,\r | |
303 | &Fadt->XPmTmrBlk,\r | |
304 | sizeof(EFI_ACPI_3_0_GENERIC_ADDRESS_STRUCTURE)\r | |
305 | );\r | |
306 | }\r | |
307 | if (Fadt->Header.Length >= OFFSET_OF (EFI_ACPI_3_0_FIXED_ACPI_DESCRIPTION_TABLE, ResetValue) + sizeof (Fadt->ResetValue)) {\r | |
308 | CopyMem (\r | |
309 | &AcpiDescription->RESET_REG,\r | |
310 | &Fadt->ResetReg,\r | |
311 | sizeof(EFI_ACPI_3_0_GENERIC_ADDRESS_STRUCTURE)\r | |
312 | );\r | |
313 | AcpiDescription->RESET_VALUE = Fadt->ResetValue;\r | |
314 | }\r | |
315 | \r | |
316 | if (AcpiDescription->PM_TMR_BLK.Address == 0) {\r | |
317 | AcpiDescription->PM_TMR_BLK.Address = Fadt->PmTmrBlk;\r | |
318 | AcpiDescription->PM_TMR_BLK.AddressSpaceId = EFI_ACPI_3_0_SYSTEM_IO;\r | |
319 | }\r | |
320 | \r | |
321 | //\r | |
322 | // It's possible that the PM_TMR_BLK.RegisterBitWidth is always 32,\r | |
323 | // we need to set the correct RegisterBitWidth value according to the TMR_VAL_EXT\r | |
324 | // A zero indicates TMR_VAL is implemented as a 24-bit value. \r | |
325 | // A one indicates TMR_VAL is implemented as a 32-bit value\r | |
326 | //\r | |
327 | AcpiDescription->PM_TMR_BLK.RegisterBitWidth = (UINT8) ((AcpiDescription->TMR_VAL_EXT == 0) ? 24 : 32);\r | |
328 | \r | |
329 | \r | |
330 | return ;\r | |
331 | }\r | |
332 | \r | |
333 | VOID\r | |
334 | PrepareHobLegacyTable (\r | |
335 | IN HOB_TEMPLATE *Hob\r | |
336 | )\r | |
337 | {\r | |
338 | CHAR8 PrintBuffer[256];\r | |
339 | \r | |
340 | Hob->Acpi.Table = (EFI_PHYSICAL_ADDRESS)(UINTN)FindAcpiRsdPtr ();\r | |
341 | AsciiSPrint (PrintBuffer, 256, "\nAcpiTable=0x%x ", (UINT32)(UINTN)Hob->Acpi.Table);\r | |
342 | PrintString (PrintBuffer);\r | |
343 | Hob->Acpi20.Table = (EFI_PHYSICAL_ADDRESS)(UINTN)FindAcpiRsdPtr ();\r | |
344 | Hob->Smbios.Table = (EFI_PHYSICAL_ADDRESS)(UINTN)FindSMBIOSPtr ();\r | |
345 | AsciiSPrint (PrintBuffer, 256, "SMBIOS Table=0x%x ", (UINT32)(UINTN)Hob->Smbios.Table);\r | |
346 | PrintString (PrintBuffer);\r | |
347 | Hob->Mps.Table = (EFI_PHYSICAL_ADDRESS)(UINTN)FindMPSPtr ();\r | |
348 | AsciiSPrint (PrintBuffer, 256, "MPS Table=0x%x\n", (UINT32)(UINTN)Hob->Mps.Table);\r | |
349 | PrintString (PrintBuffer);\r | |
350 | \r | |
351 | PrepareMcfgTable (Hob);\r | |
352 | \r | |
353 | PrepareFadtTable (Hob);\r | |
354 | \r | |
355 | return ;\r | |
356 | }\r | |
357 | \r |