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   ClearScreen();
 141   PrintString("Enter DxeIpl ...\n");
 142 /*
 143   ClearScreen();
 144   PrintString("handoff:\n");
 145   PrintString("Handoff.BfvBase = ");
 146   PrintValue64((UINT64)(UINTN)Handoff->BfvBase);
 147   PrintString(", ");
 148   PrintString("BfvLength = ");
 149   PrintValue64(Handoff->BfvSize);
 150   PrintString("\n");
 151   PrintString("Handoff.DxeIplImageBase = ");
 152   PrintValue64((UINT64)(UINTN)Handoff->DxeIplImageBase);
 153   PrintString(", ");
 154   PrintString("DxeIplImageSize = ");
 155   PrintValue64(Handoff->DxeIplImageSize);
 156   PrintString("\n");
 157   PrintString("Handoff.DxeCoreImageBase = ");
 158   PrintValue64((UINT64)(UINTN)Handoff->DxeCoreImageBase);
 159   PrintString(", ");
 160   PrintString("DxeCoreImageSize = ");
 161   PrintValue64(Handoff->DxeCoreImageSize);
 162   PrintString("\n");
 163 */
 164   //
 165   // Hob Generation Guild line:
 166   //   * Don't report FV as physical memory
 167   //   * MemoryAllocation Hob should only cover physical memory
 168   //   * Use ResourceDescriptor Hob to report physical memory or Firmware Device and they shouldn't be overlapped
 169
 170   PrepareHobCpu ();
 171   //
 172   // 1. BFV
 173   //
 174   PrepareHobBfv (Handoff->BfvBase, Handoff->BfvSize);
 175
 176   //
 177   // 2. Updates Memory information, and get the top free address under 4GB
 178   //
 179   MemoryTopOnDescriptor = PrepareHobMemory (Handoff->MemDescCount, Handoff->MemDesc);
 180
 181   //
 182   // 3. Put [NV], [Stack], [PageTable], [MemDesc], [HOB] just below the [top free address under 4GB]
 183   //
 184
 185   //   3.1 NV data
 186   NvStorageBase = PrepareHobNvStorage (MemoryTopOnDescriptor);
 187   AsciiSPrint (PrintBuffer, 256, "NV Storage Base=0x%x\n", (UINTN)NvStorageBase);
 188   PrintString (PrintBuffer);
 189
 190   //   3.2 Stack
 191   StackTop = NvStorageBase;
 192   StackBottom = PrepareHobStack (StackTop);
 193   AsciiSPrint (PrintBuffer, 256, "Stack Top=0x%x, Stack Bottom=0x%x\n",
 194               (UINTN)StackTop, (UINTN)StackBottom);
 195   PrintString (PrintBuffer);
 196   //   3.3 Page Table
 197   PageTableBase = PreparePageTable (StackBottom, gHob->Cpu.SizeOfMemorySpace);
 198   //   3.4 MemDesc (will be used in PlatformBds)
 199   MemoryDescriptor = PrepareHobMemoryDescriptor (PageTableBase, Handoff->MemDescCount, Handoff->MemDesc);
 200   //   3.5 Copy the Hob itself to EfiMemoryBottom, and update the PHIT Hob
 201   PrepareHobPhit (StackTop, MemoryDescriptor);
 202
 203   //
 204   // 4. Register the memory occupied by DxeCore and DxeIpl together as DxeCore
 205   //
 206   PrepareHobDxeCore (
 207     Handoff->DxeCoreEntryPoint,
 208     (EFI_PHYSICAL_ADDRESS)(UINTN)Handoff->DxeCoreImageBase,
 209     (UINTN)Handoff->DxeIplImageBase + (UINTN)Handoff->DxeIplImageSize - (UINTN)Handoff->DxeCoreImageBase
 210     );
 211
 212   PrepareHobLegacyTable (gHob);
 213   PreparePpisNeededByDxeCore (gHob);
 214
 215   CompleteHobGeneration ();
 216
 217   AsciiSPrint (PrintBuffer, 256, "HobStart=0x%x\n", (UINTN)gHob);
 218   PrintString (PrintBuffer);
 219
 220   AsciiSPrint (PrintBuffer, 256, "Memory Top=0x%x, Bottom=0x%x\n",
 221               (UINTN)gHob->Phit.EfiMemoryTop, (UINTN)gHob->Phit.EfiMemoryBottom);
 222   PrintString (PrintBuffer);
 223
 224   AsciiSPrint (PrintBuffer, 256, "Free Memory Top=0x%x, Bottom=0x%x\n",
 225               (UINTN)gHob->Phit.EfiFreeMemoryTop, (UINTN)gHob->Phit.EfiFreeMemoryBottom);
 226   PrintString (PrintBuffer);
 227
 228   AsciiSPrint (PrintBuffer, 256, "Nv Base=0x%x, Length=0x%x\n",
 229               (UINTN)gHob->NvStorageFvb.FvbInfo.Entries[0].Base,
 230               (UINTN)gHob->NvFtwFvb.FvbInfo.Entries[0].Length);
 231   PrintString (PrintBuffer);
 232 /*
 233   //
 234   // Print Hob Info
 235   //
 236   ClearScreen();
 237   PrintString("Hob Info\n");
 238   PrintString("Phit.EfiMemoryTop = ");
 239   PrintValue64(gHob->Phit.EfiMemoryTop);
 240   PrintString(" Phit.EfiMemoryBottom = ");
 241   PrintValue64(gHob->Phit.EfiMemoryBottom);
 242   PrintString("\n");
 243   PrintString("Phit.EfiFreeMemoryTop = ");
 244   PrintValue64(gHob->Phit.EfiFreeMemoryTop);
 245   PrintString(" Phit.EfiFreeMemoryBottom = ");
 246   PrintValue64(gHob->Phit.EfiFreeMemoryBottom);
 247   PrintString("\n");
 248   PrintString("Bfv = ");
 249   PrintValue64(gHob->Bfv.BaseAddress);
 250   PrintString(" BfvLength = ");
 251   PrintValue64(gHob->Bfv.Length);
 252   PrintString("\n");
 253   PrintString("NvStorageFvb = ");
 254   PrintValue64(gHob->NvStorageFvb.FvbInfo.Entries[0].Base);
 255   PrintString(" Length = ");
 256   PrintValue64(gHob->NvStorageFvb.FvbInfo.Entries[0].Length);
 257   PrintString("\n");
 258   PrintString("NvFtwFvb = ");
 259   PrintValue64(gHob->NvFtwFvb.FvbInfo.Entries[0].Base);
 260   PrintString(" Length = ");
 261   PrintValue64(gHob->NvFtwFvb.FvbInfo.Entries[0].Length);
 262   PrintString("\n");
 263   PrintString("Stack = ");
 264   PrintValue64(gHob->Stack.AllocDescriptor.MemoryBaseAddress);
 265   PrintString(" StackLength = ");
 266   PrintValue64(gHob->Stack.AllocDescriptor.MemoryLength);
 267   PrintString("\n");
 268   PrintString("MemoryFreeUnder1MB = ");
 269   PrintValue64(gHob->MemoryFreeUnder1MB.PhysicalStart);
 270   PrintString(" MemoryFreeUnder1MBLength = ");
 271   PrintValue64(gHob->MemoryFreeUnder1MB.ResourceLength);
 272   PrintString("\n");
 273   PrintString("MemoryAbove1MB = ");
 274   PrintValue64(gHob->MemoryAbove1MB.PhysicalStart);
 275   PrintString(" MemoryAbove1MBLength = ");
 276   PrintValue64(gHob->MemoryAbove1MB.ResourceLength);
 277   PrintString("\n");
 278   PrintString("MemoryAbove4GB = ");
 279   PrintValue64(gHob->MemoryAbove4GB.PhysicalStart);
 280   PrintString(" MemoryAbove4GBLength = ");
 281   PrintValue64(gHob->MemoryAbove4GB.ResourceLength);
 282   PrintString("\n");
 283   PrintString("DxeCore = ");
 284   PrintValue64(gHob->DxeCore.MemoryAllocationHeader.MemoryBaseAddress);
 285   PrintString(" DxeCoreLength = ");
 286   PrintValue64(gHob->DxeCore.MemoryAllocationHeader.MemoryLength);
 287   PrintString("\n");
 288   PrintString("MemoryAllocation = ");
 289   PrintValue64(gHob->MemoryAllocation.AllocDescriptor.MemoryBaseAddress);
 290   PrintString(" MemoryLength = ");
 291   PrintValue64(gHob->MemoryAllocation.AllocDescriptor.MemoryLength);
 292   PrintString("\n");
 293   EFI_DEADLOOP();
 294 */
 295   ClearScreen();
 296   PrintString("\n\n\n\n\n\n\n\n\n\n");
 297   PrintString("                         WELCOME TO EFI WORLD!\n");
 298
 299   EnterDxeMain (StackTop, Handoff->DxeCoreEntryPoint, gHob, PageTableBase);
 300
 301   //
 302   // Should never get here
 303   //
 304   CpuDeadLoop ();
 305 }
 306
 307 EFI_STATUS
 308 EFIAPI
 309 _ModuleEntryPoint (
 310   IN EFILDRHANDOFF  *Handoff
 311   )
 312 {
 313   DxeInit(Handoff);
 314   return EFI_SUCCESS;
 315 }