DuetPkg/DxeIpl/DxeInit.c

   1 /** @file
   2
   3 Copyright (c) 2006 - 2007, Intel Corporation
   4 All rights reserved. This program and the accompanying materials
   5 are licensed and made available under the terms and conditions of the BSD License
   6 which accompanies this distribution.  The full text of the license may be found at
   7 http://opensource.org/licenses/bsd-license.php
   8
   9 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  10 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  11
  12 Module Name:
  13   DxeInit.c
  14
  15 Abstract:
  16
  17 Revision History:
  18
  19 **/
  20
  21 #include "DxeIpl.h"
  22
  23 #include "LegacyTable.h"
  24 #include "HobGeneration.h"
  25 #include "PpisNeededByDxeCore.h"
  26 #include "Debug.h"
  27
  28 /*
  29 --------------------------------------------------------
  30  Memory Map: (XX=32,64)
  31 --------------------------------------------------------
  32 0x0
  33         IVT
  34 0x400
  35         BDA
  36 0x500
  37
  38 0x7C00
  39         BootSector
  40 0x10000
  41         EfiLdr (relocate by efiXX.COM)
  42 0x15000
  43         Efivar.bin (Load by StartXX.COM)
  44 0x20000
  45         StartXX.COM (E820 table, Temporary GDT, Temporary IDT)
  46 0x21000
  47         EfiXX.COM (Temporary Interrupt Handler)
  48 0x22000
  49         EfiLdr.efi + DxeIpl.Z + DxeMain.Z + BFV.Z
  50 0x86000
  51         MemoryFreeUnder1M (For legacy driver DMA)
  52 0x90000
  53         Temporary 4G PageTable for X64 (6 page)
  54 0x9F800
  55         EBDA
  56 0xA0000
  57         VGA
  58 0xC0000
  59         OPROM
  60 0xE0000
  61         FIRMEWARE
  62 0x100000 (1M)
  63         Temporary Stack (1M)
  64 0x200000
  65
  66 MemoryAbove1MB.PhysicalStart <-----------------------------------------------------+
  67         ...                                                                        |
  68         ...                                                                        |
  69                         <- Phit.EfiMemoryBottom -------------------+               |
  70         HOB                                                        |               |
  71                         <- Phit.EfiFreeMemoryBottom                |               |
  72                                                                    |     MemoryFreeAbove1MB.ResourceLength
  73                         <- Phit.EfiFreeMemoryTop ------+           |               |
  74         MemoryDescriptor (For ACPINVS, ACPIReclaim)    |    4M = CONSUMED_MEMORY   |
  75                                                        |           |               |
  76         Permament 4G PageTable for IA32 or      MemoryAllocation   |               |
  77         Permament 64G PageTable for X64                |           |               |
  78                         <------------------------------+           |               |
  79         Permament Stack (0x20 Pages = 128K)                        |               |
  80                         <- Phit.EfiMemoryTop ----------+-----------+---------------+
  81         DxeCore                                                                    |
  82                                                                                 DxeCore
  83         DxeIpl                                                                     |
  84                         <----------------------------------------------------------+
  85         NvFV + FtwFV                                                               |
  86                                                                                  MMIO
  87         BFV                                                                        |
  88                         <- Top of Free Memory reported by E820 --------------------+
  89         ACPINVS        or
  90         ACPIReclaim    or
  91         Reserved
  92                         <- Memory Top on RealMemory
  93
  94 0x100000000 (4G)
  95
  96 MemoryFreeAbove4G.Physicalstart <--------------------------------------------------+
  97                                                                                    |
  98                                                                                    |
  99                                                                   MemoryFreeAbove4GB.ResourceLength
 100                                                                                    |
 101                                                                                    |
 102                                 <--------------------------------------------------+
 103 */
 104
 105 VOID
 106 EnterDxeMain (
 107   IN VOID *StackTop,
 108   IN VOID *DxeCoreEntryPoint,
 109   IN VOID *Hob,
 110   IN VOID *PageTable
 111   );
 112
 113 VOID
 114 DxeInit (
 115   IN EFILDRHANDOFF  *Handoff
 116   )
 117 /*++
 118
 119   Routine Description:
 120
 121     This is the entry point after this code has been loaded into memory.
 122
 123 Arguments:
 124
 125
 126 Returns:
 127
 128     Calls into EFI Firmware
 129
 130 --*/
 131 {
 132   VOID                  *StackTop;
 133   VOID                  *StackBottom;
 134   VOID                  *PageTableBase;
 135   VOID                  *MemoryTopOnDescriptor;
 136   VOID                  *MemoryDescriptor;
 137   VOID                  *NvStorageBase;
 138
 139   PrintString("Enter DxeIpl ...\n");
 140 /*
 141   ClearScreen();
 142   PrintString("handoff:\n");
 143   PrintString("Handoff.BfvBase = ");
 144   PrintValue64((UINT64)(UINTN)Handoff->BfvBase);
 145   PrintString(", ");
 146   PrintString("BfvLength = ");
 147   PrintValue64(Handoff->BfvSize);
 148   PrintString("\n");
 149   PrintString("Handoff.DxeIplImageBase = ");
 150   PrintValue64((UINT64)(UINTN)Handoff->DxeIplImageBase);
 151   PrintString(", ");
 152   PrintString("DxeIplImageSize = ");
 153   PrintValue64(Handoff->DxeIplImageSize);
 154   PrintString("\n");
 155   PrintString("Handoff.DxeCoreImageBase = ");
 156   PrintValue64((UINT64)(UINTN)Handoff->DxeCoreImageBase);
 157   PrintString(", ");
 158   PrintString("DxeCoreImageSize = ");
 159   PrintValue64(Handoff->DxeCoreImageSize);
 160   PrintString("\n");
 161 */
 162   //
 163   // Hob Generation Guild line:
 164   //   * Don't report FV as physical memory
 165   //   * MemoryAllocation Hob should only cover physical memory
 166   //   * Use ResourceDescriptor Hob to report physical memory or Firmware Device and they shouldn't be overlapped
 167
 168   PrepareHobCpu ();
 169   //
 170   // 1. BFV
 171   //
 172   PrepareHobBfv (Handoff->BfvBase, Handoff->BfvSize);
 173
 174   //
 175   // 2. Updates Memory information, and get the top free address under 4GB
 176   //
 177   MemoryTopOnDescriptor = PrepareHobMemory (Handoff->MemDescCount, Handoff->MemDesc);
 178
 179   //
 180   // 3. Put [NV], [Stack], [PageTable], [MemDesc], [HOB] just below the [top free address under 4GB]
 181   //
 182
 183   //   3.1 NV data
 184   NvStorageBase = PrepareHobNvStorage (MemoryTopOnDescriptor);
 185   //   3.2 Stack
 186   StackTop = NvStorageBase;
 187   StackBottom = PrepareHobStack (StackTop);
 188   //   3.3 Page Table
 189   PageTableBase = PreparePageTable (StackBottom, gHob->Cpu.SizeOfMemorySpace);
 190   //   3.4 MemDesc (will be used in PlatformBds)
 191   MemoryDescriptor = PrepareHobMemoryDescriptor (PageTableBase, Handoff->MemDescCount, Handoff->MemDesc);
 192   //   3.5 Copy the Hob itself to EfiMemoryBottom, and update the PHIT Hob
 193   PrepareHobPhit (StackTop, MemoryDescriptor);
 194
 195   //
 196   // 4. Register the memory occupied by DxeCore and DxeIpl together as DxeCore
 197   //
 198   PrepareHobDxeCore (
 199     Handoff->DxeCoreEntryPoint,
 200     (EFI_PHYSICAL_ADDRESS)(UINTN)Handoff->DxeCoreImageBase,
 201     (UINTN)Handoff->DxeIplImageBase + (UINTN)Handoff->DxeIplImageSize - (UINTN)Handoff->DxeCoreImageBase
 202     );
 203
 204   PrepareHobLegacyTable (gHob);
 205   PreparePpisNeededByDxeCore (gHob);
 206
 207   CompleteHobGeneration ();
 208
 209 /*
 210   //
 211   // Print Hob Info
 212   //
 213   ClearScreen();
 214   PrintString("Hob Info\n");
 215   PrintString("Phit.EfiMemoryTop = ");
 216   PrintValue64(gHob->Phit.EfiMemoryTop);
 217   PrintString(" Phit.EfiMemoryBottom = ");
 218   PrintValue64(gHob->Phit.EfiMemoryBottom);
 219   PrintString("\n");
 220   PrintString("Phit.EfiFreeMemoryTop = ");
 221   PrintValue64(gHob->Phit.EfiFreeMemoryTop);
 222   PrintString(" Phit.EfiFreeMemoryBottom = ");
 223   PrintValue64(gHob->Phit.EfiFreeMemoryBottom);
 224   PrintString("\n");
 225   PrintString("Bfv = ");
 226   PrintValue64(gHob->Bfv.BaseAddress);
 227   PrintString(" BfvLength = ");
 228   PrintValue64(gHob->Bfv.Length);
 229   PrintString("\n");
 230   PrintString("NvStorageFvb = ");
 231   PrintValue64(gHob->NvStorageFvb.FvbInfo.Entries[0].Base);
 232   PrintString(" Length = ");
 233   PrintValue64(gHob->NvStorageFvb.FvbInfo.Entries[0].Length);
 234   PrintString("\n");
 235   PrintString("NvFtwFvb = ");
 236   PrintValue64(gHob->NvFtwFvb.FvbInfo.Entries[0].Base);
 237   PrintString(" Length = ");
 238   PrintValue64(gHob->NvFtwFvb.FvbInfo.Entries[0].Length);
 239   PrintString("\n");
 240   PrintString("Stack = ");
 241   PrintValue64(gHob->Stack.AllocDescriptor.MemoryBaseAddress);
 242   PrintString(" StackLength = ");
 243   PrintValue64(gHob->Stack.AllocDescriptor.MemoryLength);
 244   PrintString("\n");
 245   PrintString("MemoryFreeUnder1MB = ");
 246   PrintValue64(gHob->MemoryFreeUnder1MB.PhysicalStart);
 247   PrintString(" MemoryFreeUnder1MBLength = ");
 248   PrintValue64(gHob->MemoryFreeUnder1MB.ResourceLength);
 249   PrintString("\n");
 250   PrintString("MemoryAbove1MB = ");
 251   PrintValue64(gHob->MemoryAbove1MB.PhysicalStart);
 252   PrintString(" MemoryAbove1MBLength = ");
 253   PrintValue64(gHob->MemoryAbove1MB.ResourceLength);
 254   PrintString("\n");
 255   PrintString("MemoryAbove4GB = ");
 256   PrintValue64(gHob->MemoryAbove4GB.PhysicalStart);
 257   PrintString(" MemoryAbove4GBLength = ");
 258   PrintValue64(gHob->MemoryAbove4GB.ResourceLength);
 259   PrintString("\n");
 260   PrintString("DxeCore = ");
 261   PrintValue64(gHob->DxeCore.MemoryAllocationHeader.MemoryBaseAddress);
 262   PrintString(" DxeCoreLength = ");
 263   PrintValue64(gHob->DxeCore.MemoryAllocationHeader.MemoryLength);
 264   PrintString("\n");
 265   PrintString("MemoryAllocation = ");
 266   PrintValue64(gHob->MemoryAllocation.AllocDescriptor.MemoryBaseAddress);
 267   PrintString(" MemoryLength = ");
 268   PrintValue64(gHob->MemoryAllocation.AllocDescriptor.MemoryLength);
 269   PrintString("\n");
 270   EFI_DEADLOOP();
 271 */
 272
 273   ClearScreen();
 274   PrintString("\n\n\n\n\n\n\n\n\n\n");
 275   PrintString("                         WELCOME TO EFI WORLD!\n");
 276
 277   EnterDxeMain (StackTop, Handoff->DxeCoreEntryPoint, gHob, PageTableBase);
 278
 279   //
 280   // Should never get here
 281   //
 282   CpuDeadLoop ();
 283 }
 284