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   CHAR8                 PrintBuffer[256];
 139
 140   PrintString("Enter DxeIpl ...\n");
 141 /*
 142   ClearScreen();
 143   PrintString("handoff:\n");
 144   PrintString("Handoff.BfvBase = ");
 145   PrintValue64((UINT64)(UINTN)Handoff->BfvBase);
 146   PrintString(", ");
 147   PrintString("BfvLength = ");
 148   PrintValue64(Handoff->BfvSize);
 149   PrintString("\n");
 150   PrintString("Handoff.DxeIplImageBase = ");
 151   PrintValue64((UINT64)(UINTN)Handoff->DxeIplImageBase);
 152   PrintString(", ");
 153   PrintString("DxeIplImageSize = ");
 154   PrintValue64(Handoff->DxeIplImageSize);
 155   PrintString("\n");
 156   PrintString("Handoff.DxeCoreImageBase = ");
 157   PrintValue64((UINT64)(UINTN)Handoff->DxeCoreImageBase);
 158   PrintString(", ");
 159   PrintString("DxeCoreImageSize = ");
 160   PrintValue64(Handoff->DxeCoreImageSize);
 161   PrintString("\n");
 162 */
 163   //
 164   // Hob Generation Guild line:
 165   //   * Don't report FV as physical memory
 166   //   * MemoryAllocation Hob should only cover physical memory
 167   //   * Use ResourceDescriptor Hob to report physical memory or Firmware Device and they shouldn't be overlapped
 168
 169   PrepareHobCpu ();
 170   //
 171   // 1. BFV
 172   //
 173   PrepareHobBfv (Handoff->BfvBase, Handoff->BfvSize);
 174
 175   //
 176   // 2. Updates Memory information, and get the top free address under 4GB
 177   //
 178   MemoryTopOnDescriptor = PrepareHobMemory (Handoff->MemDescCount, Handoff->MemDesc);
 179
 180   //
 181   // 3. Put [NV], [Stack], [PageTable], [MemDesc], [HOB] just below the [top free address under 4GB]
 182   //
 183
 184   //   3.1 NV data
 185   NvStorageBase = PrepareHobNvStorage (MemoryTopOnDescriptor);
 186   AsciiSPrint (PrintBuffer, 256, "NV Storage Base=0x%x\n", (UINTN)NvStorageBase);
 187   PrintString (PrintBuffer);
 188
 189   //   3.2 Stack
 190   StackTop = NvStorageBase;
 191   StackBottom = PrepareHobStack (StackTop);
 192   AsciiSPrint (PrintBuffer, 256, "Stack Top=0x%x, Stack Bottom=0x%x\n",
 193               (UINTN)StackTop, (UINTN)StackBottom);
 194   PrintString (PrintBuffer);
 195   //   3.3 Page Table
 196   PageTableBase = PreparePageTable (StackBottom, gHob->Cpu.SizeOfMemorySpace);
 197   //   3.4 MemDesc (will be used in PlatformBds)
 198   MemoryDescriptor = PrepareHobMemoryDescriptor (PageTableBase, Handoff->MemDescCount, Handoff->MemDesc);
 199   //   3.5 Copy the Hob itself to EfiMemoryBottom, and update the PHIT Hob
 200   PrepareHobPhit (StackTop, MemoryDescriptor);
 201
 202   //
 203   // 4. Register the memory occupied by DxeCore and DxeIpl together as DxeCore
 204   //
 205   PrepareHobDxeCore (
 206     Handoff->DxeCoreEntryPoint,
 207     (EFI_PHYSICAL_ADDRESS)(UINTN)Handoff->DxeCoreImageBase,
 208     (UINTN)Handoff->DxeIplImageBase + (UINTN)Handoff->DxeIplImageSize - (UINTN)Handoff->DxeCoreImageBase
 209     );
 210
 211   PrepareHobLegacyTable (gHob);
 212   PreparePpisNeededByDxeCore (gHob);
 213
 214   CompleteHobGeneration ();
 215
 216   AsciiSPrint (PrintBuffer, 256, "HobStart=0x%x\n", (UINTN)gHob);
 217   PrintString (PrintBuffer);
 218
 219   AsciiSPrint (PrintBuffer, 256, "Memory Top=0x%x, Bottom=0x%x\n",
 220               (UINTN)gHob->Phit.EfiMemoryTop, (UINTN)gHob->Phit.EfiMemoryBottom);
 221   PrintString (PrintBuffer);
 222
 223   AsciiSPrint (PrintBuffer, 256, "Free Memory Top=0x%x, Bottom=0x%x\n",
 224               (UINTN)gHob->Phit.EfiFreeMemoryTop, (UINTN)gHob->Phit.EfiFreeMemoryBottom);
 225   PrintString (PrintBuffer);
 226
 227   AsciiSPrint (PrintBuffer, 256, "Nv Base=0x%x, Length=0x%x\n",
 228               (UINTN)gHob->NvStorageFvb.FvbInfo.Entries[0].Base,
 229               (UINTN)gHob->NvFtwFvb.FvbInfo.Entries[0].Length);
 230   PrintString (PrintBuffer);
 231 /*
 232   //
 233   // Print Hob Info
 234   //
 235   ClearScreen();
 236   PrintString("Hob Info\n");
 237   PrintString("Phit.EfiMemoryTop = ");
 238   PrintValue64(gHob->Phit.EfiMemoryTop);
 239   PrintString(" Phit.EfiMemoryBottom = ");
 240   PrintValue64(gHob->Phit.EfiMemoryBottom);
 241   PrintString("\n");
 242   PrintString("Phit.EfiFreeMemoryTop = ");
 243   PrintValue64(gHob->Phit.EfiFreeMemoryTop);
 244   PrintString(" Phit.EfiFreeMemoryBottom = ");
 245   PrintValue64(gHob->Phit.EfiFreeMemoryBottom);
 246   PrintString("\n");
 247   PrintString("Bfv = ");
 248   PrintValue64(gHob->Bfv.BaseAddress);
 249   PrintString(" BfvLength = ");
 250   PrintValue64(gHob->Bfv.Length);
 251   PrintString("\n");
 252   PrintString("NvStorageFvb = ");
 253   PrintValue64(gHob->NvStorageFvb.FvbInfo.Entries[0].Base);
 254   PrintString(" Length = ");
 255   PrintValue64(gHob->NvStorageFvb.FvbInfo.Entries[0].Length);
 256   PrintString("\n");
 257   PrintString("NvFtwFvb = ");
 258   PrintValue64(gHob->NvFtwFvb.FvbInfo.Entries[0].Base);
 259   PrintString(" Length = ");
 260   PrintValue64(gHob->NvFtwFvb.FvbInfo.Entries[0].Length);
 261   PrintString("\n");
 262   PrintString("Stack = ");
 263   PrintValue64(gHob->Stack.AllocDescriptor.MemoryBaseAddress);
 264   PrintString(" StackLength = ");
 265   PrintValue64(gHob->Stack.AllocDescriptor.MemoryLength);
 266   PrintString("\n");
 267   PrintString("MemoryFreeUnder1MB = ");
 268   PrintValue64(gHob->MemoryFreeUnder1MB.PhysicalStart);
 269   PrintString(" MemoryFreeUnder1MBLength = ");
 270   PrintValue64(gHob->MemoryFreeUnder1MB.ResourceLength);
 271   PrintString("\n");
 272   PrintString("MemoryAbove1MB = ");
 273   PrintValue64(gHob->MemoryAbove1MB.PhysicalStart);
 274   PrintString(" MemoryAbove1MBLength = ");
 275   PrintValue64(gHob->MemoryAbove1MB.ResourceLength);
 276   PrintString("\n");
 277   PrintString("MemoryAbove4GB = ");
 278   PrintValue64(gHob->MemoryAbove4GB.PhysicalStart);
 279   PrintString(" MemoryAbove4GBLength = ");
 280   PrintValue64(gHob->MemoryAbove4GB.ResourceLength);
 281   PrintString("\n");
 282   PrintString("DxeCore = ");
 283   PrintValue64(gHob->DxeCore.MemoryAllocationHeader.MemoryBaseAddress);
 284   PrintString(" DxeCoreLength = ");
 285   PrintValue64(gHob->DxeCore.MemoryAllocationHeader.MemoryLength);
 286   PrintString("\n");
 287   PrintString("MemoryAllocation = ");
 288   PrintValue64(gHob->MemoryAllocation.AllocDescriptor.MemoryBaseAddress);
 289   PrintString(" MemoryLength = ");
 290   PrintValue64(gHob->MemoryAllocation.AllocDescriptor.MemoryLength);
 291   PrintString("\n");
 292   EFI_DEADLOOP();
 293 */
 294   ClearScreen();
 295   PrintString("\n\n\n\n\n\n\n\n\n\n");
 296   PrintString("                         WELCOME TO EFI WORLD!\n");
 297
 298
 299   EnterDxeMain (StackTop, Handoff->DxeCoreEntryPoint, gHob, PageTableBase);
 300
 301   //
 302   // Should never get here
 303   //
 304   CpuDeadLoop ();
 305 }
 306