OvmfPkg/PlatformPei/Platform.c

   1 /**@file
   2   Platform PEI driver
   3
   4   Copyright (c) 2006 - 2014, Intel Corporation. All rights reserved.<BR>
   5   Copyright (c) 2011, Andrei Warkentin <andreiw@motorola.com>
   6
   7   This program and the accompanying materials
   8   are licensed and made available under the terms and conditions of the BSD License
   9   which accompanies this distribution.  The full text of the license may be found at
  10   http://opensource.org/licenses/bsd-license.php
  11
  12   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  13   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  14
  15 **/
  16
  17 //
  18 // The package level header files this module uses
  19 //
  20 #include <PiPei.h>
  21
  22 //
  23 // The Library classes this module consumes
  24 //
  25 #include <Library/DebugLib.h>
  26 #include <Library/HobLib.h>
  27 #include <Library/IoLib.h>
  28 #include <Library/MemoryAllocationLib.h>
  29 #include <Library/PcdLib.h>
  30 #include <Library/PciLib.h>
  31 #include <Library/PeimEntryPoint.h>
  32 #include <Library/PeiServicesLib.h>
  33 #include <Library/QemuFwCfgLib.h>
  34 #include <Library/ResourcePublicationLib.h>
  35 #include <Guid/MemoryTypeInformation.h>
  36 #include <Ppi/MasterBootMode.h>
  37 #include <IndustryStandard/Pci22.h>
  38 #include <OvmfPlatforms.h>
  39
  40 #include "Platform.h"
  41 #include "Cmos.h"
  42
  43 EFI_MEMORY_TYPE_INFORMATION mDefaultMemoryTypeInformation[] = {
  44   { EfiACPIMemoryNVS,       0x004 },
  45   { EfiACPIReclaimMemory,   0x008 },
  46   { EfiReservedMemoryType,  0x004 },
  47   { EfiRuntimeServicesData, 0x024 },
  48   { EfiRuntimeServicesCode, 0x030 },
  49   { EfiBootServicesCode,    0x180 },
  50   { EfiBootServicesData,    0xF00 },
  51   { EfiMaxMemoryType,       0x000 }
  52 };
  53
  54
  55 EFI_PEI_PPI_DESCRIPTOR   mPpiBootMode[] = {
  56   {
  57     EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST,
  58     &gEfiPeiMasterBootModePpiGuid,
  59     NULL
  60   }
  61 };
  62
  63
  64 EFI_BOOT_MODE mBootMode = BOOT_WITH_FULL_CONFIGURATION;
  65
  66 BOOLEAN mS3Supported = FALSE;
  67
  68
  69 VOID
  70 AddIoMemoryBaseSizeHob (
  71   EFI_PHYSICAL_ADDRESS        MemoryBase,
  72   UINT64                      MemorySize
  73   )
  74 {
  75   BuildResourceDescriptorHob (
  76     EFI_RESOURCE_MEMORY_MAPPED_IO,
  77       EFI_RESOURCE_ATTRIBUTE_PRESENT     |
  78       EFI_RESOURCE_ATTRIBUTE_INITIALIZED |
  79       EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE |
  80       EFI_RESOURCE_ATTRIBUTE_TESTED,
  81     MemoryBase,
  82     MemorySize
  83     );
  84 }
  85
  86 VOID
  87 AddReservedMemoryBaseSizeHob (
  88   EFI_PHYSICAL_ADDRESS        MemoryBase,
  89   UINT64                      MemorySize
  90   )
  91 {
  92   BuildResourceDescriptorHob (
  93     EFI_RESOURCE_MEMORY_RESERVED,
  94       EFI_RESOURCE_ATTRIBUTE_PRESENT     |
  95       EFI_RESOURCE_ATTRIBUTE_INITIALIZED |
  96       EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE |
  97       EFI_RESOURCE_ATTRIBUTE_TESTED,
  98     MemoryBase,
  99     MemorySize
 100     );
 101 }
 102
 103 VOID
 104 AddIoMemoryRangeHob (
 105   EFI_PHYSICAL_ADDRESS        MemoryBase,
 106   EFI_PHYSICAL_ADDRESS        MemoryLimit
 107   )
 108 {
 109   AddIoMemoryBaseSizeHob (MemoryBase, (UINT64)(MemoryLimit - MemoryBase));
 110 }
 111
 112
 113 VOID
 114 AddMemoryBaseSizeHob (
 115   EFI_PHYSICAL_ADDRESS        MemoryBase,
 116   UINT64                      MemorySize
 117   )
 118 {
 119   BuildResourceDescriptorHob (
 120     EFI_RESOURCE_SYSTEM_MEMORY,
 121       EFI_RESOURCE_ATTRIBUTE_PRESENT |
 122       EFI_RESOURCE_ATTRIBUTE_INITIALIZED |
 123       EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE |
 124       EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE |
 125       EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE |
 126       EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE |
 127       EFI_RESOURCE_ATTRIBUTE_TESTED,
 128     MemoryBase,
 129     MemorySize
 130     );
 131 }
 132
 133
 134 VOID
 135 AddMemoryRangeHob (
 136   EFI_PHYSICAL_ADDRESS        MemoryBase,
 137   EFI_PHYSICAL_ADDRESS        MemoryLimit
 138   )
 139 {
 140   AddMemoryBaseSizeHob (MemoryBase, (UINT64)(MemoryLimit - MemoryBase));
 141 }
 142
 143
 144 VOID
 145 AddUntestedMemoryBaseSizeHob (
 146   EFI_PHYSICAL_ADDRESS        MemoryBase,
 147   UINT64                      MemorySize
 148   )
 149 {
 150   BuildResourceDescriptorHob (
 151     EFI_RESOURCE_SYSTEM_MEMORY,
 152       EFI_RESOURCE_ATTRIBUTE_PRESENT |
 153       EFI_RESOURCE_ATTRIBUTE_INITIALIZED |
 154       EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE |
 155       EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE |
 156       EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE |
 157       EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE,
 158     MemoryBase,
 159     MemorySize
 160     );
 161 }
 162
 163
 164 VOID
 165 AddUntestedMemoryRangeHob (
 166   EFI_PHYSICAL_ADDRESS        MemoryBase,
 167   EFI_PHYSICAL_ADDRESS        MemoryLimit
 168   )
 169 {
 170   AddUntestedMemoryBaseSizeHob (MemoryBase, (UINT64)(MemoryLimit - MemoryBase));
 171 }
 172
 173 VOID
 174 MemMapInitialization (
 175   VOID
 176   )
 177 {
 178   //
 179   // Create Memory Type Information HOB
 180   //
 181   BuildGuidDataHob (
 182     &gEfiMemoryTypeInformationGuid,
 183     mDefaultMemoryTypeInformation,
 184     sizeof(mDefaultMemoryTypeInformation)
 185     );
 186
 187   //
 188   // Add PCI IO Port space available for PCI resource allocations.
 189   //
 190   BuildResourceDescriptorHob (
 191     EFI_RESOURCE_IO,
 192     EFI_RESOURCE_ATTRIBUTE_PRESENT     |
 193     EFI_RESOURCE_ATTRIBUTE_INITIALIZED,
 194     0xC000,
 195     0x4000
 196     );
 197
 198   //
 199   // Video memory + Legacy BIOS region
 200   //
 201   AddIoMemoryRangeHob (0x0A0000, BASE_1MB);
 202
 203   if (!mXen) {
 204     UINT32  TopOfLowRam;
 205     TopOfLowRam = GetSystemMemorySizeBelow4gb ();
 206
 207     //
 208     // address       purpose   size
 209     // ------------  --------  -------------------------
 210     // max(top, 2g)  PCI MMIO  0xFC000000 - max(top, 2g)
 211     // 0xFC000000    gap                           44 MB
 212     // 0xFEC00000    IO-APIC                        4 KB
 213     // 0xFEC01000    gap                         1020 KB
 214     // 0xFED00000    HPET                           1 KB
 215     // 0xFED00400    gap                         1023 KB
 216     // 0xFEE00000    LAPIC                          1 MB
 217     //
 218     AddIoMemoryRangeHob (TopOfLowRam < BASE_2GB ?
 219                          BASE_2GB : TopOfLowRam, 0xFC000000);
 220     AddIoMemoryBaseSizeHob (0xFEC00000, SIZE_4KB);
 221     AddIoMemoryBaseSizeHob (0xFED00000, SIZE_1KB);
 222     AddIoMemoryBaseSizeHob (PcdGet32(PcdCpuLocalApicBaseAddress), SIZE_1MB);
 223   }
 224 }
 225
 226
 227 VOID
 228 MiscInitialization (
 229   VOID
 230   )
 231 {
 232   UINT16 HostBridgeDevId;
 233   UINTN  PmCmd;
 234   UINTN  Pmba;
 235   UINTN  PmRegMisc;
 236
 237   //
 238   // Disable A20 Mask
 239   //
 240   IoOr8 (0x92, BIT1);
 241
 242   //
 243   // Build the CPU hob with 36-bit addressing and 16-bits of IO space.
 244   //
 245   BuildCpuHob (36, 16);
 246
 247   //
 248   // Query Host Bridge DID to determine platform type
 249   //
 250   HostBridgeDevId = PciRead16 (OVMF_HOSTBRIDGE_DID);
 251   switch (HostBridgeDevId) {
 252     case INTEL_82441_DEVICE_ID:
 253       PmCmd     = POWER_MGMT_REGISTER_PIIX4 (PCI_COMMAND_OFFSET);
 254       Pmba      = POWER_MGMT_REGISTER_PIIX4 (0x40);
 255       PmRegMisc = POWER_MGMT_REGISTER_PIIX4 (0x80);
 256       break;
 257     case INTEL_Q35_MCH_DEVICE_ID:
 258       PmCmd     = POWER_MGMT_REGISTER_Q35 (PCI_COMMAND_OFFSET);
 259       Pmba      = POWER_MGMT_REGISTER_Q35 (0x40);
 260       PmRegMisc = POWER_MGMT_REGISTER_Q35 (0x80);
 261       break;
 262     default:
 263       DEBUG ((EFI_D_ERROR, "%a: Unknown Host Bridge Device ID: 0x%04x\n",
 264         __FUNCTION__, HostBridgeDevId));
 265       ASSERT (FALSE);
 266       return;
 267   }
 268
 269   //
 270   // If PMREGMISC/PMIOSE is set, assume the ACPI PMBA has been configured (for
 271   // example by Xen) and skip the setup here. This matches the logic in
 272   // AcpiTimerLibConstructor ().
 273   //
 274   if ((PciRead8 (PmRegMisc) & 0x01) == 0) {
 275     //
 276     // The PEI phase should be exited with fully accessibe PIIX4 IO space:
 277     // 1. set PMBA
 278     //
 279     PciAndThenOr32 (Pmba, (UINT32) ~0xFFC0, PcdGet16 (PcdAcpiPmBaseAddress));
 280
 281     //
 282     // 2. set PCICMD/IOSE
 283     //
 284     PciOr8 (PmCmd, EFI_PCI_COMMAND_IO_SPACE);
 285
 286     //
 287     // 3. set PMREGMISC/PMIOSE
 288     //
 289     PciOr8 (PmRegMisc, 0x01);
 290   }
 291 }
 292
 293
 294 VOID
 295 BootModeInitialization (
 296   VOID
 297   )
 298 {
 299   EFI_STATUS    Status;
 300
 301   if (CmosRead8 (0xF) == 0xFE) {
 302     mBootMode = BOOT_ON_S3_RESUME;
 303   }
 304
 305   Status = PeiServicesSetBootMode (mBootMode);
 306   ASSERT_EFI_ERROR (Status);
 307
 308   Status = PeiServicesInstallPpi (mPpiBootMode);
 309   ASSERT_EFI_ERROR (Status);
 310 }
 311
 312
 313 VOID
 314 ReserveEmuVariableNvStore (
 315   )
 316 {
 317   EFI_PHYSICAL_ADDRESS VariableStore;
 318
 319   //
 320   // Allocate storage for NV variables early on so it will be
 321   // at a consistent address.  Since VM memory is preserved
 322   // across reboots, this allows the NV variable storage to survive
 323   // a VM reboot.
 324   //
 325   VariableStore =
 326     (EFI_PHYSICAL_ADDRESS)(UINTN)
 327       AllocateAlignedRuntimePages (
 328         EFI_SIZE_TO_PAGES (2 * PcdGet32 (PcdFlashNvStorageFtwSpareSize)),
 329         PcdGet32 (PcdFlashNvStorageFtwSpareSize)
 330         );
 331   DEBUG ((EFI_D_INFO,
 332           "Reserved variable store memory: 0x%lX; size: %dkb\n",
 333           VariableStore,
 334           (2 * PcdGet32 (PcdFlashNvStorageFtwSpareSize)) / 1024
 335         ));
 336   PcdSet64 (PcdEmuVariableNvStoreReserved, VariableStore);
 337 }
 338
 339
 340 VOID
 341 DebugDumpCmos (
 342   VOID
 343   )
 344 {
 345   UINTN  Loop;
 346
 347   DEBUG ((EFI_D_INFO, "CMOS:\n"));
 348
 349   for (Loop = 0; Loop < 0x80; Loop++) {
 350     if ((Loop % 0x10) == 0) {
 351       DEBUG ((EFI_D_INFO, "%02x:", Loop));
 352     }
 353     DEBUG ((EFI_D_INFO, " %02x", CmosRead8 (Loop)));
 354     if ((Loop % 0x10) == 0xf) {
 355       DEBUG ((EFI_D_INFO, "\n"));
 356     }
 357   }
 358 }
 359
 360
 361 /**
 362   Perform Platform PEI initialization.
 363
 364   @param  FileHandle      Handle of the file being invoked.
 365   @param  PeiServices     Describes the list of possible PEI Services.
 366
 367   @return EFI_SUCCESS     The PEIM initialized successfully.
 368
 369 **/
 370 EFI_STATUS
 371 EFIAPI
 372 InitializePlatform (
 373   IN       EFI_PEI_FILE_HANDLE  FileHandle,
 374   IN CONST EFI_PEI_SERVICES     **PeiServices
 375   )
 376 {
 377   DEBUG ((EFI_D_ERROR, "Platform PEIM Loaded\n"));
 378
 379   DebugDumpCmos ();
 380
 381   XenDetect ();
 382
 383   if (QemuFwCfgS3Enabled ()) {
 384     DEBUG ((EFI_D_INFO, "S3 support was detected on QEMU\n"));
 385     mS3Supported = TRUE;
 386   }
 387
 388   BootModeInitialization ();
 389
 390   PublishPeiMemory ();
 391
 392   InitializeRamRegions ();
 393
 394   if (mXen) {
 395     DEBUG ((EFI_D_INFO, "Xen was detected\n"));
 396     InitializeXen ();
 397   }
 398
 399   if (mBootMode != BOOT_ON_S3_RESUME) {
 400     ReserveEmuVariableNvStore ();
 401
 402     PeiFvInitialization ();
 403
 404     MemMapInitialization ();
 405   }
 406
 407   MiscInitialization ();
 408
 409   return EFI_SUCCESS;
 410 }