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49ba9447 | 1 | /**@file\r |
2 | Platform PEI driver\r | |
3 | \r | |
a1726e30 | 4 | Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR>\r |
eec7d420 | 5 | Copyright (c) 2011, Andrei Warkentin <andreiw@motorola.com>\r |
6 | \r | |
b26f0cf9 | 7 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
49ba9447 | 8 | \r |
9 | **/\r | |
10 | \r | |
11 | //\r | |
12 | // The package level header files this module uses\r | |
13 | //\r | |
14 | #include <PiPei.h>\r | |
15 | \r | |
16 | //\r | |
17 | // The Library classes this module consumes\r | |
18 | //\r | |
5133d1f1 | 19 | #include <Library/BaseLib.h>\r |
49ba9447 | 20 | #include <Library/DebugLib.h>\r |
21 | #include <Library/HobLib.h>\r | |
22 | #include <Library/IoLib.h>\r | |
77ba993c | 23 | #include <Library/MemoryAllocationLib.h>\r |
24 | #include <Library/PcdLib.h>\r | |
49ba9447 | 25 | #include <Library/PciLib.h>\r |
26 | #include <Library/PeimEntryPoint.h>\r | |
9ed65b10 | 27 | #include <Library/PeiServicesLib.h>\r |
7cdba634 | 28 | #include <Library/QemuFwCfgLib.h>\r |
687f7521 | 29 | #include <Library/QemuFwCfgS3Lib.h>\r |
49ba9447 | 30 | #include <Library/ResourcePublicationLib.h>\r |
9ed65b10 | 31 | #include <Ppi/MasterBootMode.h>\r |
83357313 | 32 | #include <IndustryStandard/I440FxPiix4.h>\r |
931a0c74 | 33 | #include <IndustryStandard/Pci22.h>\r |
83357313 LE |
34 | #include <IndustryStandard/Q35MchIch9.h>\r |
35 | #include <IndustryStandard/QemuCpuHotplug.h>\r | |
97380beb | 36 | #include <OvmfPlatforms.h>\r |
49ba9447 | 37 | \r |
38 | #include "Platform.h"\r | |
3ca15914 | 39 | #include "Cmos.h"\r |
49ba9447 | 40 | \r |
9ed65b10 | 41 | EFI_PEI_PPI_DESCRIPTOR mPpiBootMode[] = {\r |
42 | {\r | |
43 | EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST,\r | |
44 | &gEfiPeiMasterBootModePpiGuid,\r | |
45 | NULL\r | |
46 | }\r | |
47 | };\r | |
48 | \r | |
49 | \r | |
589756c7 PA |
50 | UINT16 mHostBridgeDevId;\r |
51 | \r | |
979420df JJ |
52 | EFI_BOOT_MODE mBootMode = BOOT_WITH_FULL_CONFIGURATION;\r |
53 | \r | |
7cdba634 JJ |
54 | BOOLEAN mS3Supported = FALSE;\r |
55 | \r | |
45a70db3 | 56 | UINT32 mMaxCpuCount;\r |
979420df | 57 | \r |
49ba9447 | 58 | VOID\r |
59 | AddIoMemoryBaseSizeHob (\r | |
60 | EFI_PHYSICAL_ADDRESS MemoryBase,\r | |
61 | UINT64 MemorySize\r | |
62 | )\r | |
63 | {\r | |
991d9563 | 64 | BuildResourceDescriptorHob (\r |
65 | EFI_RESOURCE_MEMORY_MAPPED_IO,\r | |
49ba9447 | 66 | EFI_RESOURCE_ATTRIBUTE_PRESENT |\r |
67 | EFI_RESOURCE_ATTRIBUTE_INITIALIZED |\r | |
68 | EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE |\r | |
991d9563 | 69 | EFI_RESOURCE_ATTRIBUTE_TESTED,\r |
49ba9447 | 70 | MemoryBase,\r |
71 | MemorySize\r | |
72 | );\r | |
73 | }\r | |
74 | \r | |
eec7d420 | 75 | VOID\r |
76 | AddReservedMemoryBaseSizeHob (\r | |
77 | EFI_PHYSICAL_ADDRESS MemoryBase,\r | |
cdef34ec LE |
78 | UINT64 MemorySize,\r |
79 | BOOLEAN Cacheable\r | |
eec7d420 | 80 | )\r |
81 | {\r | |
82 | BuildResourceDescriptorHob (\r | |
83 | EFI_RESOURCE_MEMORY_RESERVED,\r | |
84 | EFI_RESOURCE_ATTRIBUTE_PRESENT |\r | |
85 | EFI_RESOURCE_ATTRIBUTE_INITIALIZED |\r | |
86 | EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE |\r | |
cdef34ec LE |
87 | (Cacheable ?\r |
88 | EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE |\r | |
89 | EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE |\r | |
90 | EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE :\r | |
91 | 0\r | |
92 | ) |\r | |
eec7d420 | 93 | EFI_RESOURCE_ATTRIBUTE_TESTED,\r |
94 | MemoryBase,\r | |
95 | MemorySize\r | |
96 | );\r | |
97 | }\r | |
49ba9447 | 98 | \r |
99 | VOID\r | |
100 | AddIoMemoryRangeHob (\r | |
101 | EFI_PHYSICAL_ADDRESS MemoryBase,\r | |
102 | EFI_PHYSICAL_ADDRESS MemoryLimit\r | |
103 | )\r | |
104 | {\r | |
105 | AddIoMemoryBaseSizeHob (MemoryBase, (UINT64)(MemoryLimit - MemoryBase));\r | |
106 | }\r | |
107 | \r | |
108 | \r | |
109 | VOID\r | |
110 | AddMemoryBaseSizeHob (\r | |
111 | EFI_PHYSICAL_ADDRESS MemoryBase,\r | |
112 | UINT64 MemorySize\r | |
113 | )\r | |
114 | {\r | |
991d9563 | 115 | BuildResourceDescriptorHob (\r |
116 | EFI_RESOURCE_SYSTEM_MEMORY,\r | |
49ba9447 | 117 | EFI_RESOURCE_ATTRIBUTE_PRESENT |\r |
118 | EFI_RESOURCE_ATTRIBUTE_INITIALIZED |\r | |
119 | EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE |\r | |
120 | EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE |\r | |
121 | EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE |\r | |
122 | EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE |\r | |
991d9563 | 123 | EFI_RESOURCE_ATTRIBUTE_TESTED,\r |
49ba9447 | 124 | MemoryBase,\r |
125 | MemorySize\r | |
126 | );\r | |
127 | }\r | |
128 | \r | |
129 | \r | |
130 | VOID\r | |
131 | AddMemoryRangeHob (\r | |
132 | EFI_PHYSICAL_ADDRESS MemoryBase,\r | |
133 | EFI_PHYSICAL_ADDRESS MemoryLimit\r | |
134 | )\r | |
135 | {\r | |
136 | AddMemoryBaseSizeHob (MemoryBase, (UINT64)(MemoryLimit - MemoryBase));\r | |
137 | }\r | |
138 | \r | |
c0e10976 | 139 | \r |
bb6a9a93 | 140 | VOID\r |
4b455f7b | 141 | MemMapInitialization (\r |
bb6a9a93 WL |
142 | VOID\r |
143 | )\r | |
144 | {\r | |
32e083c7 LE |
145 | UINT64 PciIoBase;\r |
146 | UINT64 PciIoSize;\r | |
147 | RETURN_STATUS PcdStatus;\r | |
c4df7fd0 LE |
148 | \r |
149 | PciIoBase = 0xC000;\r | |
150 | PciIoSize = 0x4000;\r | |
151 | \r | |
bb6a9a93 WL |
152 | //\r |
153 | // Video memory + Legacy BIOS region\r | |
154 | //\r | |
155 | AddIoMemoryRangeHob (0x0A0000, BASE_1MB);\r | |
156 | \r | |
4b455f7b | 157 | if (!mXen) {\r |
305cd4f7 | 158 | UINT32 TopOfLowRam;\r |
7b8fe635 | 159 | UINT64 PciExBarBase;\r |
c68d3a69 | 160 | UINT32 PciBase;\r |
03845e90 | 161 | UINT32 PciSize;\r |
c68d3a69 | 162 | \r |
305cd4f7 | 163 | TopOfLowRam = GetSystemMemorySizeBelow4gb ();\r |
02d6f4ce | 164 | PciExBarBase = 0;\r |
c68d3a69 LE |
165 | if (mHostBridgeDevId == INTEL_Q35_MCH_DEVICE_ID) {\r |
166 | //\r | |
eb4d62b0 LE |
167 | // The MMCONFIG area is expected to fall between the top of low RAM and\r |
168 | // the base of the 32-bit PCI host aperture.\r | |
c68d3a69 | 169 | //\r |
7b8fe635 | 170 | PciExBarBase = FixedPcdGet64 (PcdPciExpressBaseAddress);\r |
eb4d62b0 | 171 | ASSERT (TopOfLowRam <= PciExBarBase);\r |
7b8fe635 | 172 | ASSERT (PciExBarBase <= MAX_UINT32 - SIZE_256MB);\r |
eb4d62b0 | 173 | PciBase = (UINT32)(PciExBarBase + SIZE_256MB);\r |
c68d3a69 | 174 | } else {\r |
49edde15 LE |
175 | ASSERT (TopOfLowRam <= mQemuUc32Base);\r |
176 | PciBase = mQemuUc32Base;\r | |
c68d3a69 | 177 | }\r |
49ba9447 | 178 | \r |
4b455f7b JJ |
179 | //\r |
180 | // address purpose size\r | |
181 | // ------------ -------- -------------------------\r | |
182 | // max(top, 2g) PCI MMIO 0xFC000000 - max(top, 2g)\r | |
183 | // 0xFC000000 gap 44 MB\r | |
184 | // 0xFEC00000 IO-APIC 4 KB\r | |
185 | // 0xFEC01000 gap 1020 KB\r | |
186 | // 0xFED00000 HPET 1 KB\r | |
90721ba5 PA |
187 | // 0xFED00400 gap 111 KB\r |
188 | // 0xFED1C000 gap (PIIX4) / RCRB (ICH9) 16 KB\r | |
189 | // 0xFED20000 gap 896 KB\r | |
4b455f7b JJ |
190 | // 0xFEE00000 LAPIC 1 MB\r |
191 | //\r | |
d4534984 | 192 | PciSize = 0xFC000000 - PciBase;\r |
03845e90 | 193 | AddIoMemoryBaseSizeHob (PciBase, PciSize);\r |
32e083c7 LE |
194 | PcdStatus = PcdSet64S (PcdPciMmio32Base, PciBase);\r |
195 | ASSERT_RETURN_ERROR (PcdStatus);\r | |
196 | PcdStatus = PcdSet64S (PcdPciMmio32Size, PciSize);\r | |
197 | ASSERT_RETURN_ERROR (PcdStatus);\r | |
198 | \r | |
4b455f7b JJ |
199 | AddIoMemoryBaseSizeHob (0xFEC00000, SIZE_4KB);\r |
200 | AddIoMemoryBaseSizeHob (0xFED00000, SIZE_1KB);\r | |
90721ba5 PA |
201 | if (mHostBridgeDevId == INTEL_Q35_MCH_DEVICE_ID) {\r |
202 | AddIoMemoryBaseSizeHob (ICH9_ROOT_COMPLEX_BASE, SIZE_16KB);\r | |
7b8fe635 LE |
203 | //\r |
204 | // Note: there should be an\r | |
205 | //\r | |
206 | // AddIoMemoryBaseSizeHob (PciExBarBase, SIZE_256MB);\r | |
207 | //\r | |
208 | // call below, just like the one above for RCBA. However, Linux insists\r | |
209 | // that the MMCONFIG area be marked in the E820 or UEFI memory map as\r | |
210 | // "reserved memory" -- Linux does not content itself with a simple gap\r | |
211 | // in the memory map wherever the MCFG ACPI table points to.\r | |
212 | //\r | |
213 | // This appears to be a safety measure. The PCI Firmware Specification\r | |
214 | // (rev 3.1) says in 4.1.2. "MCFG Table Description": "The resources can\r | |
215 | // *optionally* be returned in [...] EFIGetMemoryMap as reserved memory\r | |
216 | // [...]". (Emphasis added here.)\r | |
217 | //\r | |
218 | // Normally we add memory resource descriptor HOBs in\r | |
219 | // QemuInitializeRam(), and pre-allocate from those with memory\r | |
220 | // allocation HOBs in InitializeRamRegions(). However, the MMCONFIG area\r | |
221 | // is most definitely not RAM; so, as an exception, cover it with\r | |
222 | // uncacheable reserved memory right here.\r | |
223 | //\r | |
224 | AddReservedMemoryBaseSizeHob (PciExBarBase, SIZE_256MB, FALSE);\r | |
225 | BuildMemoryAllocationHob (PciExBarBase, SIZE_256MB,\r | |
226 | EfiReservedMemoryType);\r | |
90721ba5 | 227 | }\r |
4b455f7b | 228 | AddIoMemoryBaseSizeHob (PcdGet32(PcdCpuLocalApicBaseAddress), SIZE_1MB);\r |
bba734ab LE |
229 | \r |
230 | //\r | |
231 | // On Q35, the IO Port space is available for PCI resource allocations from\r | |
232 | // 0x6000 up.\r | |
233 | //\r | |
234 | if (mHostBridgeDevId == INTEL_Q35_MCH_DEVICE_ID) {\r | |
235 | PciIoBase = 0x6000;\r | |
236 | PciIoSize = 0xA000;\r | |
237 | ASSERT ((ICH9_PMBASE_VALUE & 0xF000) < PciIoBase);\r | |
238 | }\r | |
4b455f7b | 239 | }\r |
c4df7fd0 LE |
240 | \r |
241 | //\r | |
242 | // Add PCI IO Port space available for PCI resource allocations.\r | |
243 | //\r | |
244 | BuildResourceDescriptorHob (\r | |
245 | EFI_RESOURCE_IO,\r | |
246 | EFI_RESOURCE_ATTRIBUTE_PRESENT |\r | |
247 | EFI_RESOURCE_ATTRIBUTE_INITIALIZED,\r | |
248 | PciIoBase,\r | |
249 | PciIoSize\r | |
250 | );\r | |
32e083c7 LE |
251 | PcdStatus = PcdSet64S (PcdPciIoBase, PciIoBase);\r |
252 | ASSERT_RETURN_ERROR (PcdStatus);\r | |
253 | PcdStatus = PcdSet64S (PcdPciIoSize, PciIoSize);\r | |
254 | ASSERT_RETURN_ERROR (PcdStatus);\r | |
49ba9447 | 255 | }\r |
256 | \r | |
ab081a50 LE |
257 | EFI_STATUS\r |
258 | GetNamedFwCfgBoolean (\r | |
259 | IN CHAR8 *FwCfgFileName,\r | |
260 | OUT BOOLEAN *Setting\r | |
261 | )\r | |
262 | {\r | |
263 | EFI_STATUS Status;\r | |
264 | FIRMWARE_CONFIG_ITEM FwCfgItem;\r | |
265 | UINTN FwCfgSize;\r | |
266 | UINT8 Value[3];\r | |
267 | \r | |
268 | Status = QemuFwCfgFindFile (FwCfgFileName, &FwCfgItem, &FwCfgSize);\r | |
269 | if (EFI_ERROR (Status)) {\r | |
270 | return Status;\r | |
271 | }\r | |
272 | if (FwCfgSize > sizeof Value) {\r | |
273 | return EFI_BAD_BUFFER_SIZE;\r | |
274 | }\r | |
275 | QemuFwCfgSelectItem (FwCfgItem);\r | |
276 | QemuFwCfgReadBytes (FwCfgSize, Value);\r | |
277 | \r | |
278 | if ((FwCfgSize == 1) ||\r | |
279 | (FwCfgSize == 2 && Value[1] == '\n') ||\r | |
280 | (FwCfgSize == 3 && Value[1] == '\r' && Value[2] == '\n')) {\r | |
281 | switch (Value[0]) {\r | |
282 | case '0':\r | |
283 | case 'n':\r | |
284 | case 'N':\r | |
285 | *Setting = FALSE;\r | |
286 | return EFI_SUCCESS;\r | |
287 | \r | |
288 | case '1':\r | |
289 | case 'y':\r | |
290 | case 'Y':\r | |
291 | *Setting = TRUE;\r | |
292 | return EFI_SUCCESS;\r | |
293 | \r | |
294 | default:\r | |
295 | break;\r | |
296 | }\r | |
297 | }\r | |
298 | return EFI_PROTOCOL_ERROR;\r | |
299 | }\r | |
300 | \r | |
301 | #define UPDATE_BOOLEAN_PCD_FROM_FW_CFG(TokenName) \\r | |
302 | do { \\r | |
32e083c7 LE |
303 | BOOLEAN Setting; \\r |
304 | RETURN_STATUS PcdStatus; \\r | |
ab081a50 LE |
305 | \\r |
306 | if (!EFI_ERROR (GetNamedFwCfgBoolean ( \\r | |
307 | "opt/ovmf/" #TokenName, &Setting))) { \\r | |
32e083c7 LE |
308 | PcdStatus = PcdSetBoolS (TokenName, Setting); \\r |
309 | ASSERT_RETURN_ERROR (PcdStatus); \\r | |
ab081a50 LE |
310 | } \\r |
311 | } while (0)\r | |
312 | \r | |
313 | VOID\r | |
314 | NoexecDxeInitialization (\r | |
315 | VOID\r | |
316 | )\r | |
317 | {\r | |
318 | UPDATE_BOOLEAN_PCD_FROM_FW_CFG (PcdPropertiesTableEnable);\r | |
319 | UPDATE_BOOLEAN_PCD_FROM_FW_CFG (PcdSetNxForStack);\r | |
320 | }\r | |
49ba9447 | 321 | \r |
7b8fe635 LE |
322 | VOID\r |
323 | PciExBarInitialization (\r | |
324 | VOID\r | |
325 | )\r | |
326 | {\r | |
327 | union {\r | |
328 | UINT64 Uint64;\r | |
329 | UINT32 Uint32[2];\r | |
330 | } PciExBarBase;\r | |
331 | \r | |
332 | //\r | |
333 | // We only support the 256MB size for the MMCONFIG area:\r | |
334 | // 256 buses * 32 devices * 8 functions * 4096 bytes config space.\r | |
335 | //\r | |
336 | // The masks used below enforce the Q35 requirements that the MMCONFIG area\r | |
337 | // be (a) correctly aligned -- here at 256 MB --, (b) located under 64 GB.\r | |
338 | //\r | |
339 | // Note that (b) also ensures that the minimum address width we have\r | |
340 | // determined in AddressWidthInitialization(), i.e., 36 bits, will suffice\r | |
341 | // for DXE's page tables to cover the MMCONFIG area.\r | |
342 | //\r | |
343 | PciExBarBase.Uint64 = FixedPcdGet64 (PcdPciExpressBaseAddress);\r | |
344 | ASSERT ((PciExBarBase.Uint32[1] & MCH_PCIEXBAR_HIGHMASK) == 0);\r | |
345 | ASSERT ((PciExBarBase.Uint32[0] & MCH_PCIEXBAR_LOWMASK) == 0);\r | |
346 | \r | |
347 | //\r | |
348 | // Clear the PCIEXBAREN bit first, before programming the high register.\r | |
349 | //\r | |
350 | PciWrite32 (DRAMC_REGISTER_Q35 (MCH_PCIEXBAR_LOW), 0);\r | |
351 | \r | |
352 | //\r | |
353 | // Program the high register. Then program the low register, setting the\r | |
354 | // MMCONFIG area size and enabling decoding at once.\r | |
355 | //\r | |
356 | PciWrite32 (DRAMC_REGISTER_Q35 (MCH_PCIEXBAR_HIGH), PciExBarBase.Uint32[1]);\r | |
357 | PciWrite32 (\r | |
358 | DRAMC_REGISTER_Q35 (MCH_PCIEXBAR_LOW),\r | |
359 | PciExBarBase.Uint32[0] | MCH_PCIEXBAR_BUS_FF | MCH_PCIEXBAR_EN\r | |
360 | );\r | |
361 | }\r | |
362 | \r | |
49ba9447 | 363 | VOID\r |
364 | MiscInitialization (\r | |
0e20a186 | 365 | VOID\r |
49ba9447 | 366 | )\r |
367 | {\r | |
32e083c7 LE |
368 | UINTN PmCmd;\r |
369 | UINTN Pmba;\r | |
370 | UINT32 PmbaAndVal;\r | |
371 | UINT32 PmbaOrVal;\r | |
372 | UINTN AcpiCtlReg;\r | |
373 | UINT8 AcpiEnBit;\r | |
374 | RETURN_STATUS PcdStatus;\r | |
97380beb | 375 | \r |
49ba9447 | 376 | //\r |
377 | // Disable A20 Mask\r | |
378 | //\r | |
55cdb67a | 379 | IoOr8 (0x92, BIT1);\r |
49ba9447 | 380 | \r |
381 | //\r | |
86a14b0a LE |
382 | // Build the CPU HOB with guest RAM size dependent address width and 16-bits\r |
383 | // of IO space. (Side note: unlike other HOBs, the CPU HOB is needed during\r | |
384 | // S3 resume as well, so we build it unconditionally.)\r | |
49ba9447 | 385 | //\r |
86a14b0a | 386 | BuildCpuHob (mPhysMemAddressWidth, 16);\r |
c756b2ab | 387 | \r |
97380beb | 388 | //\r |
589756c7 | 389 | // Determine platform type and save Host Bridge DID to PCD\r |
97380beb | 390 | //\r |
589756c7 | 391 | switch (mHostBridgeDevId) {\r |
97380beb | 392 | case INTEL_82441_DEVICE_ID:\r |
e2ab3f81 | 393 | PmCmd = POWER_MGMT_REGISTER_PIIX4 (PCI_COMMAND_OFFSET);\r |
da372167 | 394 | Pmba = POWER_MGMT_REGISTER_PIIX4 (PIIX4_PMBA);\r |
1466b76f LE |
395 | PmbaAndVal = ~(UINT32)PIIX4_PMBA_MASK;\r |
396 | PmbaOrVal = PIIX4_PMBA_VALUE;\r | |
da372167 LE |
397 | AcpiCtlReg = POWER_MGMT_REGISTER_PIIX4 (PIIX4_PMREGMISC);\r |
398 | AcpiEnBit = PIIX4_PMREGMISC_PMIOSE;\r | |
97380beb GS |
399 | break;\r |
400 | case INTEL_Q35_MCH_DEVICE_ID:\r | |
e2ab3f81 | 401 | PmCmd = POWER_MGMT_REGISTER_Q35 (PCI_COMMAND_OFFSET);\r |
bc9d05d6 | 402 | Pmba = POWER_MGMT_REGISTER_Q35 (ICH9_PMBASE);\r |
1466b76f LE |
403 | PmbaAndVal = ~(UINT32)ICH9_PMBASE_MASK;\r |
404 | PmbaOrVal = ICH9_PMBASE_VALUE;\r | |
bc9d05d6 LE |
405 | AcpiCtlReg = POWER_MGMT_REGISTER_Q35 (ICH9_ACPI_CNTL);\r |
406 | AcpiEnBit = ICH9_ACPI_CNTL_ACPI_EN;\r | |
97380beb GS |
407 | break;\r |
408 | default:\r | |
409 | DEBUG ((EFI_D_ERROR, "%a: Unknown Host Bridge Device ID: 0x%04x\n",\r | |
589756c7 | 410 | __FUNCTION__, mHostBridgeDevId));\r |
97380beb GS |
411 | ASSERT (FALSE);\r |
412 | return;\r | |
413 | }\r | |
32e083c7 LE |
414 | PcdStatus = PcdSet16S (PcdOvmfHostBridgePciDevId, mHostBridgeDevId);\r |
415 | ASSERT_RETURN_ERROR (PcdStatus);\r | |
97380beb | 416 | \r |
0e20a186 | 417 | //\r |
e2ab3f81 GS |
418 | // If the appropriate IOspace enable bit is set, assume the ACPI PMBA\r |
419 | // has been configured (e.g., by Xen) and skip the setup here.\r | |
420 | // This matches the logic in AcpiTimerLibConstructor ().\r | |
0e20a186 | 421 | //\r |
e2ab3f81 | 422 | if ((PciRead8 (AcpiCtlReg) & AcpiEnBit) == 0) {\r |
eec7d420 | 423 | //\r |
e2ab3f81 | 424 | // The PEI phase should be exited with fully accessibe ACPI PM IO space:\r |
931a0c74 | 425 | // 1. set PMBA\r |
eec7d420 | 426 | //\r |
1466b76f | 427 | PciAndThenOr32 (Pmba, PmbaAndVal, PmbaOrVal);\r |
931a0c74 | 428 | \r |
429 | //\r | |
430 | // 2. set PCICMD/IOSE\r | |
431 | //\r | |
97380beb | 432 | PciOr8 (PmCmd, EFI_PCI_COMMAND_IO_SPACE);\r |
931a0c74 | 433 | \r |
434 | //\r | |
e2ab3f81 | 435 | // 3. set ACPI PM IO enable bit (PMREGMISC:PMIOSE or ACPI_CNTL:ACPI_EN)\r |
931a0c74 | 436 | //\r |
e2ab3f81 | 437 | PciOr8 (AcpiCtlReg, AcpiEnBit);\r |
eec7d420 | 438 | }\r |
90721ba5 PA |
439 | \r |
440 | if (mHostBridgeDevId == INTEL_Q35_MCH_DEVICE_ID) {\r | |
441 | //\r | |
442 | // Set Root Complex Register Block BAR\r | |
443 | //\r | |
444 | PciWrite32 (\r | |
445 | POWER_MGMT_REGISTER_Q35 (ICH9_RCBA),\r | |
446 | ICH9_ROOT_COMPLEX_BASE | ICH9_RCBA_EN\r | |
447 | );\r | |
7b8fe635 LE |
448 | \r |
449 | //\r | |
450 | // Set PCI Express Register Range Base Address\r | |
451 | //\r | |
452 | PciExBarInitialization ();\r | |
90721ba5 | 453 | }\r |
49ba9447 | 454 | }\r |
455 | \r | |
456 | \r | |
9ed65b10 | 457 | VOID\r |
458 | BootModeInitialization (\r | |
8f5ca05b | 459 | VOID\r |
9ed65b10 | 460 | )\r |
461 | {\r | |
8f5ca05b LE |
462 | EFI_STATUS Status;\r |
463 | \r | |
464 | if (CmosRead8 (0xF) == 0xFE) {\r | |
979420df | 465 | mBootMode = BOOT_ON_S3_RESUME;\r |
8f5ca05b | 466 | }\r |
9be75189 | 467 | CmosWrite8 (0xF, 0x00);\r |
667bf1e4 | 468 | \r |
979420df | 469 | Status = PeiServicesSetBootMode (mBootMode);\r |
667bf1e4 | 470 | ASSERT_EFI_ERROR (Status);\r |
471 | \r | |
472 | Status = PeiServicesInstallPpi (mPpiBootMode);\r | |
473 | ASSERT_EFI_ERROR (Status);\r | |
9ed65b10 | 474 | }\r |
475 | \r | |
476 | \r | |
77ba993c | 477 | VOID\r |
478 | ReserveEmuVariableNvStore (\r | |
479 | )\r | |
480 | {\r | |
481 | EFI_PHYSICAL_ADDRESS VariableStore;\r | |
32e083c7 | 482 | RETURN_STATUS PcdStatus;\r |
77ba993c | 483 | \r |
484 | //\r | |
485 | // Allocate storage for NV variables early on so it will be\r | |
486 | // at a consistent address. Since VM memory is preserved\r | |
487 | // across reboots, this allows the NV variable storage to survive\r | |
488 | // a VM reboot.\r | |
489 | //\r | |
490 | VariableStore =\r | |
491 | (EFI_PHYSICAL_ADDRESS)(UINTN)\r | |
c9e7907d LE |
492 | AllocateRuntimePages (\r |
493 | EFI_SIZE_TO_PAGES (2 * PcdGet32 (PcdFlashNvStorageFtwSpareSize))\r | |
27f58ea1 | 494 | );\r |
77ba993c | 495 | DEBUG ((EFI_D_INFO,\r |
c9e7907d | 496 | "Reserved variable store memory: 0x%lX; size: %dkb\n",\r |
77ba993c | 497 | VariableStore,\r |
c9e7907d | 498 | (2 * PcdGet32 (PcdFlashNvStorageFtwSpareSize)) / 1024\r |
77ba993c | 499 | ));\r |
32e083c7 LE |
500 | PcdStatus = PcdSet64S (PcdEmuVariableNvStoreReserved, VariableStore);\r |
501 | ASSERT_RETURN_ERROR (PcdStatus);\r | |
77ba993c | 502 | }\r |
503 | \r | |
504 | \r | |
3ca15914 | 505 | VOID\r |
506 | DebugDumpCmos (\r | |
507 | VOID\r | |
508 | )\r | |
509 | {\r | |
6394c35a | 510 | UINT32 Loop;\r |
3ca15914 | 511 | \r |
512 | DEBUG ((EFI_D_INFO, "CMOS:\n"));\r | |
513 | \r | |
514 | for (Loop = 0; Loop < 0x80; Loop++) {\r | |
515 | if ((Loop % 0x10) == 0) {\r | |
516 | DEBUG ((EFI_D_INFO, "%02x:", Loop));\r | |
517 | }\r | |
518 | DEBUG ((EFI_D_INFO, " %02x", CmosRead8 (Loop)));\r | |
519 | if ((Loop % 0x10) == 0xf) {\r | |
520 | DEBUG ((EFI_D_INFO, "\n"));\r | |
521 | }\r | |
522 | }\r | |
523 | }\r | |
524 | \r | |
525 | \r | |
5133d1f1 LE |
526 | VOID\r |
527 | S3Verification (\r | |
528 | VOID\r | |
529 | )\r | |
530 | {\r | |
531 | #if defined (MDE_CPU_X64)\r | |
532 | if (FeaturePcdGet (PcdSmmSmramRequire) && mS3Supported) {\r | |
533 | DEBUG ((EFI_D_ERROR,\r | |
534 | "%a: S3Resume2Pei doesn't support X64 PEI + SMM yet.\n", __FUNCTION__));\r | |
535 | DEBUG ((EFI_D_ERROR,\r | |
536 | "%a: Please disable S3 on the QEMU command line (see the README),\n",\r | |
537 | __FUNCTION__));\r | |
538 | DEBUG ((EFI_D_ERROR,\r | |
539 | "%a: or build OVMF with \"OvmfPkgIa32X64.dsc\".\n", __FUNCTION__));\r | |
540 | ASSERT (FALSE);\r | |
541 | CpuDeadLoop ();\r | |
542 | }\r | |
543 | #endif\r | |
544 | }\r | |
545 | \r | |
546 | \r | |
e0ed7a9b LE |
547 | VOID\r |
548 | Q35BoardVerification (\r | |
549 | VOID\r | |
550 | )\r | |
551 | {\r | |
552 | if (mHostBridgeDevId == INTEL_Q35_MCH_DEVICE_ID) {\r | |
553 | return;\r | |
554 | }\r | |
555 | \r | |
556 | DEBUG ((\r | |
557 | DEBUG_ERROR,\r | |
558 | "%a: no TSEG (SMRAM) on host bridge DID=0x%04x; "\r | |
559 | "only DID=0x%04x (Q35) is supported\n",\r | |
560 | __FUNCTION__,\r | |
561 | mHostBridgeDevId,\r | |
562 | INTEL_Q35_MCH_DEVICE_ID\r | |
563 | ));\r | |
564 | ASSERT (FALSE);\r | |
565 | CpuDeadLoop ();\r | |
566 | }\r | |
567 | \r | |
568 | \r | |
45a70db3 | 569 | /**\r |
83357313 LE |
570 | Fetch the boot CPU count and the possible CPU count from QEMU, and expose\r |
571 | them to UefiCpuPkg modules. Set the mMaxCpuCount variable.\r | |
45a70db3 LE |
572 | **/\r |
573 | VOID\r | |
574 | MaxCpuCountInitialization (\r | |
575 | VOID\r | |
576 | )\r | |
577 | {\r | |
83357313 | 578 | UINT16 BootCpuCount;\r |
45a70db3 LE |
579 | RETURN_STATUS PcdStatus;\r |
580 | \r | |
45a70db3 | 581 | //\r |
83357313 | 582 | // Try to fetch the boot CPU count.\r |
45a70db3 | 583 | //\r |
83357313 LE |
584 | QemuFwCfgSelectItem (QemuFwCfgItemSmpCpuCount);\r |
585 | BootCpuCount = QemuFwCfgRead16 ();\r | |
586 | if (BootCpuCount == 0) {\r | |
587 | //\r | |
588 | // QEMU doesn't report the boot CPU count. (BootCpuCount == 0) will let\r | |
589 | // MpInitLib count APs up to (PcdCpuMaxLogicalProcessorNumber - 1), or\r | |
590 | // until PcdCpuApInitTimeOutInMicroSeconds elapses (whichever is reached\r | |
591 | // first).\r | |
592 | //\r | |
593 | DEBUG ((DEBUG_WARN, "%a: boot CPU count unavailable\n", __FUNCTION__));\r | |
45a70db3 | 594 | mMaxCpuCount = PcdGet32 (PcdCpuMaxLogicalProcessorNumber);\r |
83357313 LE |
595 | } else {\r |
596 | //\r | |
597 | // We will expose BootCpuCount to MpInitLib. MpInitLib will count APs up to\r | |
598 | // (BootCpuCount - 1) precisely, regardless of timeout.\r | |
599 | //\r | |
600 | // Now try to fetch the possible CPU count.\r | |
601 | //\r | |
602 | UINTN CpuHpBase;\r | |
603 | UINT32 CmdData2;\r | |
604 | \r | |
605 | CpuHpBase = ((mHostBridgeDevId == INTEL_Q35_MCH_DEVICE_ID) ?\r | |
606 | ICH9_CPU_HOTPLUG_BASE : PIIX4_CPU_HOTPLUG_BASE);\r | |
607 | \r | |
608 | //\r | |
609 | // If only legacy mode is available in the CPU hotplug register block, or\r | |
610 | // the register block is completely missing, then the writes below are\r | |
611 | // no-ops.\r | |
612 | //\r | |
613 | // 1. Switch the hotplug register block to modern mode.\r | |
614 | //\r | |
615 | IoWrite32 (CpuHpBase + QEMU_CPUHP_W_CPU_SEL, 0);\r | |
616 | //\r | |
617 | // 2. Select a valid CPU for deterministic reading of\r | |
618 | // QEMU_CPUHP_R_CMD_DATA2.\r | |
619 | //\r | |
620 | // CPU#0 is always valid; it is the always present and non-removable\r | |
621 | // BSP.\r | |
622 | //\r | |
623 | IoWrite32 (CpuHpBase + QEMU_CPUHP_W_CPU_SEL, 0);\r | |
624 | //\r | |
625 | // 3. Send a command after which QEMU_CPUHP_R_CMD_DATA2 is specified to\r | |
626 | // read as zero, and which does not invalidate the selector. (The\r | |
627 | // selector may change, but it must not become invalid.)\r | |
628 | //\r | |
629 | // Send QEMU_CPUHP_CMD_GET_PENDING, as it will prove useful later.\r | |
630 | //\r | |
631 | IoWrite8 (CpuHpBase + QEMU_CPUHP_W_CMD, QEMU_CPUHP_CMD_GET_PENDING);\r | |
632 | //\r | |
633 | // 4. Read QEMU_CPUHP_R_CMD_DATA2.\r | |
634 | //\r | |
635 | // If the register block is entirely missing, then this is an unassigned\r | |
636 | // IO read, returning all-bits-one.\r | |
637 | //\r | |
638 | // If only legacy mode is available, then bit#0 stands for CPU#0 in the\r | |
639 | // "CPU present bitmap". CPU#0 is always present.\r | |
640 | //\r | |
641 | // Otherwise, QEMU_CPUHP_R_CMD_DATA2 is either still reserved (returning\r | |
642 | // all-bits-zero), or it is specified to read as zero after the above\r | |
643 | // steps. Both cases confirm modern mode.\r | |
644 | //\r | |
645 | CmdData2 = IoRead32 (CpuHpBase + QEMU_CPUHP_R_CMD_DATA2);\r | |
646 | DEBUG ((DEBUG_VERBOSE, "%a: CmdData2=0x%x\n", __FUNCTION__, CmdData2));\r | |
647 | if (CmdData2 != 0) {\r | |
648 | //\r | |
649 | // QEMU doesn't support the modern CPU hotplug interface. Assume that the\r | |
650 | // possible CPU count equals the boot CPU count (precluding hotplug).\r | |
651 | //\r | |
652 | DEBUG ((DEBUG_WARN, "%a: modern CPU hotplug interface unavailable\n",\r | |
653 | __FUNCTION__));\r | |
654 | mMaxCpuCount = BootCpuCount;\r | |
655 | } else {\r | |
656 | //\r | |
657 | // Grab the possible CPU count from the modern CPU hotplug interface.\r | |
658 | //\r | |
659 | UINT32 Present, Possible, Selected;\r | |
660 | \r | |
661 | Present = 0;\r | |
662 | Possible = 0;\r | |
663 | \r | |
664 | //\r | |
665 | // We've sent QEMU_CPUHP_CMD_GET_PENDING last; this ensures\r | |
666 | // QEMU_CPUHP_RW_CMD_DATA can now be read usefully. However,\r | |
667 | // QEMU_CPUHP_CMD_GET_PENDING may have selected a CPU with actual pending\r | |
668 | // hotplug events; therefore, select CPU#0 forcibly.\r | |
669 | //\r | |
670 | IoWrite32 (CpuHpBase + QEMU_CPUHP_W_CPU_SEL, Possible);\r | |
671 | \r | |
672 | do {\r | |
673 | UINT8 CpuStatus;\r | |
674 | \r | |
675 | //\r | |
676 | // Read the status of the currently selected CPU. This will help with a\r | |
677 | // sanity check against "BootCpuCount".\r | |
678 | //\r | |
679 | CpuStatus = IoRead8 (CpuHpBase + QEMU_CPUHP_R_CPU_STAT);\r | |
680 | if ((CpuStatus & QEMU_CPUHP_STAT_ENABLED) != 0) {\r | |
681 | ++Present;\r | |
682 | }\r | |
683 | //\r | |
684 | // Attempt to select the next CPU.\r | |
685 | //\r | |
686 | ++Possible;\r | |
687 | IoWrite32 (CpuHpBase + QEMU_CPUHP_W_CPU_SEL, Possible);\r | |
688 | //\r | |
689 | // If the selection is successful, then the following read will return\r | |
690 | // the selector (which we know is positive at this point). Otherwise,\r | |
691 | // the read will return 0.\r | |
692 | //\r | |
693 | Selected = IoRead32 (CpuHpBase + QEMU_CPUHP_RW_CMD_DATA);\r | |
694 | ASSERT (Selected == Possible || Selected == 0);\r | |
695 | } while (Selected > 0);\r | |
696 | \r | |
697 | //\r | |
698 | // Sanity check: fw_cfg and the modern CPU hotplug interface should\r | |
699 | // return the same boot CPU count.\r | |
700 | //\r | |
701 | if (BootCpuCount != Present) {\r | |
702 | DEBUG ((DEBUG_WARN, "%a: QEMU v2.7 reset bug: BootCpuCount=%d "\r | |
703 | "Present=%u\n", __FUNCTION__, BootCpuCount, Present));\r | |
704 | //\r | |
705 | // The handling of QemuFwCfgItemSmpCpuCount, across CPU hotplug plus\r | |
706 | // platform reset (including S3), was corrected in QEMU commit\r | |
707 | // e3cadac073a9 ("pc: fix FW_CFG_NB_CPUS to account for -device added\r | |
708 | // CPUs", 2016-11-16), part of release v2.8.0.\r | |
709 | //\r | |
710 | BootCpuCount = (UINT16)Present;\r | |
711 | }\r | |
712 | \r | |
713 | mMaxCpuCount = Possible;\r | |
714 | }\r | |
45a70db3 | 715 | }\r |
83357313 LE |
716 | \r |
717 | DEBUG ((DEBUG_INFO, "%a: BootCpuCount=%d mMaxCpuCount=%u\n", __FUNCTION__,\r | |
718 | BootCpuCount, mMaxCpuCount));\r | |
719 | ASSERT (BootCpuCount <= mMaxCpuCount);\r | |
720 | \r | |
721 | PcdStatus = PcdSet32S (PcdCpuBootLogicalProcessorNumber, BootCpuCount);\r | |
45a70db3 | 722 | ASSERT_RETURN_ERROR (PcdStatus);\r |
83357313 | 723 | PcdStatus = PcdSet32S (PcdCpuMaxLogicalProcessorNumber, mMaxCpuCount);\r |
45a70db3 | 724 | ASSERT_RETURN_ERROR (PcdStatus);\r |
45a70db3 LE |
725 | }\r |
726 | \r | |
727 | \r | |
49ba9447 | 728 | /**\r |
729 | Perform Platform PEI initialization.\r | |
730 | \r | |
731 | @param FileHandle Handle of the file being invoked.\r | |
732 | @param PeiServices Describes the list of possible PEI Services.\r | |
733 | \r | |
734 | @return EFI_SUCCESS The PEIM initialized successfully.\r | |
735 | \r | |
736 | **/\r | |
737 | EFI_STATUS\r | |
738 | EFIAPI\r | |
739 | InitializePlatform (\r | |
740 | IN EFI_PEI_FILE_HANDLE FileHandle,\r | |
741 | IN CONST EFI_PEI_SERVICES **PeiServices\r | |
742 | )\r | |
743 | {\r | |
a1726e30 SZ |
744 | EFI_STATUS Status;\r |
745 | \r | |
7707c9fd | 746 | DEBUG ((DEBUG_INFO, "Platform PEIM Loaded\n"));\r |
49ba9447 | 747 | \r |
3ca15914 | 748 | DebugDumpCmos ();\r |
749 | \r | |
b98b4941 | 750 | XenDetect ();\r |
c7ea55b9 | 751 | \r |
7cdba634 JJ |
752 | if (QemuFwCfgS3Enabled ()) {\r |
753 | DEBUG ((EFI_D_INFO, "S3 support was detected on QEMU\n"));\r | |
754 | mS3Supported = TRUE;\r | |
a1726e30 SZ |
755 | Status = PcdSetBoolS (PcdAcpiS3Enable, TRUE);\r |
756 | ASSERT_EFI_ERROR (Status);\r | |
7cdba634 JJ |
757 | }\r |
758 | \r | |
5133d1f1 | 759 | S3Verification ();\r |
869b17cc | 760 | BootModeInitialization ();\r |
bc89fe48 | 761 | AddressWidthInitialization ();\r |
869b17cc | 762 | \r |
d5e06444 LE |
763 | //\r |
764 | // Query Host Bridge DID\r | |
765 | //\r | |
766 | mHostBridgeDevId = PciRead16 (OVMF_HOSTBRIDGE_DID);\r | |
767 | \r | |
83357313 LE |
768 | MaxCpuCountInitialization ();\r |
769 | \r | |
23bfb5c0 | 770 | if (FeaturePcdGet (PcdSmmSmramRequire)) {\r |
e0ed7a9b | 771 | Q35BoardVerification ();\r |
23bfb5c0 | 772 | Q35TsegMbytesInitialization ();\r |
73974f80 | 773 | Q35SmramAtDefaultSmbaseInitialization ();\r |
23bfb5c0 LE |
774 | }\r |
775 | \r | |
f76e9eba JJ |
776 | PublishPeiMemory ();\r |
777 | \r | |
49edde15 LE |
778 | QemuUc32BaseInitialization ();\r |
779 | \r | |
2818c158 | 780 | InitializeRamRegions ();\r |
49ba9447 | 781 | \r |
b621bb0a | 782 | if (mXen) {\r |
c7ea55b9 | 783 | DEBUG ((EFI_D_INFO, "Xen was detected\n"));\r |
b98b4941 | 784 | InitializeXen ();\r |
c7ea55b9 | 785 | }\r |
eec7d420 | 786 | \r |
bd386eaf | 787 | if (mBootMode != BOOT_ON_S3_RESUME) {\r |
5e167d7e LE |
788 | if (!FeaturePcdGet (PcdSmmSmramRequire)) {\r |
789 | ReserveEmuVariableNvStore ();\r | |
790 | }\r | |
bd386eaf | 791 | PeiFvInitialization ();\r |
d42fdd6f | 792 | MemTypeInfoInitialization ();\r |
bd386eaf | 793 | MemMapInitialization ();\r |
ab081a50 | 794 | NoexecDxeInitialization ();\r |
bd386eaf | 795 | }\r |
49ba9447 | 796 | \r |
d20ae95a | 797 | InstallClearCacheCallback ();\r |
13b5d743 | 798 | AmdSevInitialize ();\r |
0e20a186 | 799 | MiscInitialization ();\r |
dbab9949 | 800 | InstallFeatureControlCallback ();\r |
49ba9447 | 801 | \r |
802 | return EFI_SUCCESS;\r | |
803 | }\r |