OvmfPkg/PlatformPei/Platform.c

   1 /**@file
   2   Platform PEI driver
   3
   4   Copyright (c) 2006 - 2009, Intel Corporation
   5   All rights reserved. This program and the accompanying materials
   6   are licensed and made available under the terms and conditions of the BSD License
   7   which accompanies this distribution.  The full text of the license may be found at
   8   http://opensource.org/licenses/bsd-license.php
   9
  10   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12
  13 **/
  14
  15 //
  16 // The package level header files this module uses
  17 //
  18 #include <PiPei.h>
  19
  20 //
  21 // The Library classes this module consumes
  22 //
  23 #include <Library/DebugLib.h>
  24 #include <Library/HobLib.h>
  25 #include <Library/IoLib.h>
  26 #include <Library/PciLib.h>
  27 #include <Library/PeimEntryPoint.h>
  28 #include <Library/ResourcePublicationLib.h>
  29 #include <Guid/MemoryTypeInformation.h>
  30
  31 #include "Platform.h"
  32
  33 EFI_MEMORY_TYPE_INFORMATION mDefaultMemoryTypeInformation[] = {
  34   { EfiACPIMemoryNVS,       0x004 },
  35   { EfiACPIReclaimMemory,   0x01C },
  36   { EfiRuntimeServicesData, 0x050 },
  37   { EfiRuntimeServicesCode, 0x020 },
  38   { EfiBootServicesCode,    0x0F0 },
  39   { EfiBootServicesData,    0xA00 },
  40   { EfiMaxMemoryType,       0x000 }
  41 };
  42
  43
  44 VOID
  45 AddIoMemoryBaseSizeHob (
  46   EFI_PHYSICAL_ADDRESS        MemoryBase,
  47   UINT64                      MemorySize
  48   )
  49 {
  50   STATIC EFI_RESOURCE_ATTRIBUTE_TYPE Attributes =
  51     (
  52       EFI_RESOURCE_ATTRIBUTE_PRESENT     |
  53       EFI_RESOURCE_ATTRIBUTE_INITIALIZED |
  54       EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE |
  55       EFI_RESOURCE_ATTRIBUTE_TESTED
  56     );
  57
  58   BuildResourceDescriptorHob (
  59     EFI_RESOURCE_MEMORY_MAPPED_IO,
  60     Attributes,
  61     MemoryBase,
  62     MemorySize
  63     );
  64 }
  65
  66
  67 VOID
  68 AddIoMemoryRangeHob (
  69   EFI_PHYSICAL_ADDRESS        MemoryBase,
  70   EFI_PHYSICAL_ADDRESS        MemoryLimit
  71   )
  72 {
  73   AddIoMemoryBaseSizeHob (MemoryBase, (UINT64)(MemoryLimit - MemoryBase));
  74 }
  75
  76
  77 VOID
  78 AddMemoryBaseSizeHob (
  79   EFI_PHYSICAL_ADDRESS        MemoryBase,
  80   UINT64                      MemorySize
  81   )
  82 {
  83   STATIC EFI_RESOURCE_ATTRIBUTE_TYPE Attributes =
  84     (
  85       EFI_RESOURCE_ATTRIBUTE_PRESENT |
  86       EFI_RESOURCE_ATTRIBUTE_INITIALIZED |
  87       EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE |
  88       EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE |
  89       EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE |
  90       EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE |
  91       EFI_RESOURCE_ATTRIBUTE_TESTED
  92     );
  93
  94   BuildResourceDescriptorHob (
  95     EFI_RESOURCE_SYSTEM_MEMORY,
  96     Attributes,
  97     MemoryBase,
  98     MemorySize
  99     );
 100 }
 101
 102
 103 VOID
 104 AddMemoryRangeHob (
 105   EFI_PHYSICAL_ADDRESS        MemoryBase,
 106   EFI_PHYSICAL_ADDRESS        MemoryLimit
 107   )
 108 {
 109   AddMemoryBaseSizeHob (MemoryBase, (UINT64)(MemoryLimit - MemoryBase));
 110 }
 111
 112
 113 VOID
 114 MemMapInitialization (
 115   )
 116 {
 117   //
 118   // Create Memory Type Information HOB
 119   //
 120   BuildGuidDataHob (
 121     &gEfiMemoryTypeInformationGuid,
 122     mDefaultMemoryTypeInformation,
 123     sizeof(mDefaultMemoryTypeInformation)
 124     );
 125
 126   //
 127   // Local APIC range
 128   //
 129   AddIoMemoryBaseSizeHob (0xFEC80000, 0x80000);
 130
 131   //
 132   // I/O APIC range
 133   //
 134   AddIoMemoryBaseSizeHob (0xFEC00000, 0x80000);
 135
 136   //
 137   // Video memory + Legacy BIOS region
 138   //
 139   AddMemoryRangeHob (0x0A0000, 0x0B0000);
 140   AddIoMemoryRangeHob (0x0B0000, 0x100000);
 141 }
 142
 143
 144 VOID
 145 MiscInitialization (
 146   )
 147 {
 148   //
 149   // Disable A20 Mask
 150   //
 151   IoWrite8 (0x92, (UINT8) (IoRead8 (0x92) | 0x02));
 152
 153   //
 154   // Build the CPU hob with 36-bit addressing and 16-bits of IO space.
 155   //
 156   BuildCpuHob (36, 16);
 157 }
 158
 159
 160 /**
 161   Perform Platform PEI initialization.
 162
 163   @param  FileHandle      Handle of the file being invoked.
 164   @param  PeiServices     Describes the list of possible PEI Services.
 165
 166   @return EFI_SUCCESS     The PEIM initialized successfully.
 167
 168 **/
 169 EFI_STATUS
 170 EFIAPI
 171 InitializePlatform (
 172   IN       EFI_PEI_FILE_HANDLE  FileHandle,
 173   IN CONST EFI_PEI_SERVICES     **PeiServices
 174   )
 175 {
 176   DEBUG ((EFI_D_ERROR, "Platform PEIM Loaded\n"));
 177
 178   MemDetect ();
 179
 180   PeiFvInitialization ();
 181
 182   MemMapInitialization ();
 183
 184   MiscInitialization ();
 185
 186   return EFI_SUCCESS;
 187 }
 188