mirror of https://github.com/acidanthera/audk.git
284 lines
10 KiB
C
284 lines
10 KiB
C
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/*++
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Copyright (c) 2006 - 2007, Intel Corporation
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All rights reserved. This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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Module Name:
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DxeInit.c
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Abstract:
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Revision History:
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--*/
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#include "DxeIpl.h"
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#include "LegacyTable.h"
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#include "HobGeneration.h"
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#include "PpisNeededByDxeCore.h"
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#include "Debug.h"
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/*
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--------------------------------------------------------
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Memory Map: (XX=32,64)
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--------------------------------------------------------
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0x0
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IVT
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0x400
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BDA
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0x500
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0x7C00
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BootSector
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0x10000
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EfiLdr (relocate by efiXX.COM)
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0x15000
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Efivar.bin (Load by StartXX.COM)
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0x20000
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StartXX.COM (E820 table, Temporary GDT, Temporary IDT)
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0x21000
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EfiXX.COM (Temporary Interrupt Handler)
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0x22000
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EfiLdr.efi + DxeIpl.Z + DxeMain.Z + BFV.Z
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0x86000
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MemoryFreeUnder1M (For legacy driver DMA)
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0x90000
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Temporary 4G PageTable for X64 (6 page)
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0x9F800
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EBDA
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0xA0000
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VGA
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0xC0000
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OPROM
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0xE0000
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FIRMEWARE
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0x100000 (1M)
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Temporary Stack (1M)
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0x200000
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MemoryAbove1MB.PhysicalStart <-----------------------------------------------------+
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... |
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... |
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<- Phit.EfiMemoryBottom -------------------+ |
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HOB | |
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<- Phit.EfiFreeMemoryBottom | |
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| MemoryFreeAbove1MB.ResourceLength
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<- Phit.EfiFreeMemoryTop ------+ | |
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MemoryDescriptor (For ACPINVS, ACPIReclaim) | 4M = CONSUMED_MEMORY |
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| | |
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Permament 4G PageTable for IA32 or MemoryAllocation | |
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Permament 64G PageTable for X64 | | |
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<------------------------------+ | |
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Permament Stack (0x20 Pages = 128K) | |
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<- Phit.EfiMemoryTop ----------+-----------+---------------+
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DxeCore |
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DxeCore
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DxeIpl |
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<----------------------------------------------------------+
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NvFV + FtwFV |
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MMIO
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BFV |
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<- Top of Free Memory reported by E820 --------------------+
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ACPINVS or
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ACPIReclaim or
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Reserved
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<- Memory Top on RealMemory
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0x100000000 (4G)
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MemoryFreeAbove4G.Physicalstart <--------------------------------------------------+
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MemoryFreeAbove4GB.ResourceLength
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<--------------------------------------------------+
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*/
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VOID
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EnterDxeMain (
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IN VOID *StackTop,
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IN VOID *DxeCoreEntryPoint,
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IN VOID *Hob,
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IN VOID *PageTable
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);
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VOID
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DxeInit (
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IN EFILDRHANDOFF *Handoff
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)
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/*++
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Routine Description:
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This is the entry point after this code has been loaded into memory.
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Arguments:
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Returns:
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Calls into EFI Firmware
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--*/
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{
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VOID *StackTop;
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VOID *StackBottom;
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VOID *PageTableBase;
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VOID *MemoryTopOnDescriptor;
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VOID *MemoryDescriptor;
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VOID *NvStorageBase;
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/*
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ClearScreen();
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PrintString("handoff:\n");
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PrintString("Handoff.BfvBase = ");
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PrintValue64((UINT64)(UINTN)Handoff->BfvBase);
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PrintString(", ");
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PrintString("BfvLength = ");
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PrintValue64(Handoff->BfvSize);
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PrintString("\n");
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PrintString("Handoff.DxeIplImageBase = ");
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PrintValue64((UINT64)(UINTN)Handoff->DxeIplImageBase);
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PrintString(", ");
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PrintString("DxeIplImageSize = ");
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PrintValue64(Handoff->DxeIplImageSize);
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PrintString("\n");
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PrintString("Handoff.DxeCoreImageBase = ");
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PrintValue64((UINT64)(UINTN)Handoff->DxeCoreImageBase);
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PrintString(", ");
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PrintString("DxeCoreImageSize = ");
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PrintValue64(Handoff->DxeCoreImageSize);
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PrintString("\n");
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*/
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//
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// Hob Generation Guild line:
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// * Don't report FV as physical memory
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// * MemoryAllocation Hob should only cover physical memory
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// * Use ResourceDescriptor Hob to report physical memory or Firmware Device and they shouldn't be overlapped
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PrepareHobCpu ();
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//
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// 1. BFV
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//
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PrepareHobBfv (Handoff->BfvBase, Handoff->BfvSize);
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//
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// 2. Updates Memory information, and get the top free address under 4GB
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//
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MemoryTopOnDescriptor = PrepareHobMemory (Handoff->MemDescCount, Handoff->MemDesc);
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//
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// 3. Put [NV], [Stack], [PageTable], [MemDesc], [HOB] just below the [top free address under 4GB]
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//
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// 3.1 NV data
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NvStorageBase = PrepareHobNvStorage (MemoryTopOnDescriptor);
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// 3.2 Stack
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StackTop = NvStorageBase;
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StackBottom = PrepareHobStack (StackTop);
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// 3.3 Page Table
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PageTableBase = PreparePageTable (StackBottom, gHob->Cpu.SizeOfMemorySpace);
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// 3.4 MemDesc (will be used in PlatformBds)
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MemoryDescriptor = PrepareHobMemoryDescriptor (PageTableBase, Handoff->MemDescCount, Handoff->MemDesc);
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// 3.5 Copy the Hob itself to EfiMemoryBottom, and update the PHIT Hob
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PrepareHobPhit (StackTop, MemoryDescriptor);
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//
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// 4. Register the memory occupied by DxeCore and DxeIpl together as DxeCore
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//
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PrepareHobDxeCore (
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Handoff->DxeCoreEntryPoint,
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(EFI_PHYSICAL_ADDRESS)(UINTN)Handoff->DxeCoreImageBase,
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(UINTN)Handoff->DxeIplImageBase + (UINTN)Handoff->DxeIplImageSize - (UINTN)Handoff->DxeCoreImageBase
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);
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PrepareHobLegacyTable (gHob);
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PreparePpisNeededByDxeCore (gHob);
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CompleteHobGeneration ();
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/*
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//
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// Print Hob Info
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//
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ClearScreen();
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PrintString("Hob Info\n");
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PrintString("Phit.EfiMemoryTop = ");
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PrintValue64(gHob->Phit.EfiMemoryTop);
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PrintString(" Phit.EfiMemoryBottom = ");
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PrintValue64(gHob->Phit.EfiMemoryBottom);
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PrintString("\n");
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PrintString("Phit.EfiFreeMemoryTop = ");
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PrintValue64(gHob->Phit.EfiFreeMemoryTop);
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PrintString(" Phit.EfiFreeMemoryBottom = ");
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PrintValue64(gHob->Phit.EfiFreeMemoryBottom);
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PrintString("\n");
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PrintString("Bfv = ");
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PrintValue64(gHob->Bfv.BaseAddress);
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PrintString(" BfvLength = ");
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PrintValue64(gHob->Bfv.Length);
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PrintString("\n");
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PrintString("NvStorageFvb = ");
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PrintValue64(gHob->NvStorageFvb.FvbInfo.Entries[0].Base);
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PrintString(" Length = ");
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PrintValue64(gHob->NvStorageFvb.FvbInfo.Entries[0].Length);
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PrintString("\n");
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PrintString("NvFtwFvb = ");
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PrintValue64(gHob->NvFtwFvb.FvbInfo.Entries[0].Base);
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PrintString(" Length = ");
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PrintValue64(gHob->NvFtwFvb.FvbInfo.Entries[0].Length);
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PrintString("\n");
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PrintString("Stack = ");
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PrintValue64(gHob->Stack.AllocDescriptor.MemoryBaseAddress);
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PrintString(" StackLength = ");
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PrintValue64(gHob->Stack.AllocDescriptor.MemoryLength);
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PrintString("\n");
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PrintString("MemoryFreeUnder1MB = ");
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PrintValue64(gHob->MemoryFreeUnder1MB.PhysicalStart);
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PrintString(" MemoryFreeUnder1MBLength = ");
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PrintValue64(gHob->MemoryFreeUnder1MB.ResourceLength);
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PrintString("\n");
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PrintString("MemoryAbove1MB = ");
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PrintValue64(gHob->MemoryAbove1MB.PhysicalStart);
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PrintString(" MemoryAbove1MBLength = ");
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PrintValue64(gHob->MemoryAbove1MB.ResourceLength);
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PrintString("\n");
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PrintString("MemoryAbove4GB = ");
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PrintValue64(gHob->MemoryAbove4GB.PhysicalStart);
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PrintString(" MemoryAbove4GBLength = ");
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PrintValue64(gHob->MemoryAbove4GB.ResourceLength);
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PrintString("\n");
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PrintString("DxeCore = ");
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PrintValue64(gHob->DxeCore.MemoryAllocationHeader.MemoryBaseAddress);
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PrintString(" DxeCoreLength = ");
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PrintValue64(gHob->DxeCore.MemoryAllocationHeader.MemoryLength);
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PrintString("\n");
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PrintString("MemoryAllocation = ");
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PrintValue64(gHob->MemoryAllocation.AllocDescriptor.MemoryBaseAddress);
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PrintString(" MemoryLength = ");
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PrintValue64(gHob->MemoryAllocation.AllocDescriptor.MemoryLength);
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PrintString("\n");
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EFI_DEADLOOP();
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*/
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ClearScreen();
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PrintString("\n\n\n\n\n\n\n\n\n\n");
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PrintString(" WELCOME TO EFI WORLD!\n");
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EnterDxeMain (StackTop, Handoff->DxeCoreEntryPoint, gHob, PageTableBase);
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//
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// Should never get here
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//
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CpuDeadLoop ();
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}
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