X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=DuetPkg%2FDxeIpl%2FX64%2FPaging.c;fp=DuetPkg%2FDxeIpl%2FX64%2FPaging.c;h=0000000000000000000000000000000000000000;hp=3b4de18a2ee02d234efc11d2c5750d1e6738a93e;hb=9fb5c5c4a33248764b24cb710b56d6c32ce237b4;hpb=8efc6d84ca41e692cc60702e1f27276f7883b6db

diff --git a/DuetPkg/DxeIpl/X64/Paging.c b/DuetPkg/DxeIpl/X64/Paging.c
deleted file mode 100644
index 3b4de18a2e..0000000000
--- a/DuetPkg/DxeIpl/X64/Paging.c
+++ /dev/null
@@ -1,238 +0,0 @@
-/** @file
-
-Copyright (c) 2006 - 2007, Intel Corporation. All rights reserved.<BR>
-This program and the accompanying materials                          
-are licensed and made available under the terms and conditions of the BSD License         
-which accompanies this distribution.  The full text of the license may be found at        
-http://opensource.org/licenses/bsd-license.php                                            
-                                                                                          
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,                     
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.             
-
-Module Name:
-  Paging.c
-
-Abstract:
-
-Revision History:
-
-**/
-
-#include "HobGeneration.h"
-#include "VirtualMemory.h"
-
-//
-// Create 2M-page table
-// PML4 (47:39)
-// PDPTE (38:30)
-// PDE (29:21)
-//
-
-#define EFI_2M_PAGE_BITS_NUM    21
-#define EFI_MAX_ENTRY_BITS_NUM  9
-
-#define EFI_PAGE_SIZE_4K        0x1000
-#define EFI_PAGE_SIZE_2M        (1 << EFI_2M_PAGE_BITS_NUM)
-
-#ifndef MIN
-  #define MIN(a, b)               ((a) < (b) ? (a) : (b))
-#endif
-#define ENTRY_NUM(x)            ((UINTN)1 << (x))
-
-UINT8 gPML4BitsNum;
-UINT8 gPDPTEBitsNum;
-UINT8 gPDEBitsNum;
-
-UINTN gPageNum2M;
-UINTN gPageNum4K;
-
-VOID
-EnableNullPointerProtection (
-  UINT8                       *PageTable
-  )
-{
-  X64_PAGE_TABLE_ENTRY_4K *PageTableEntry4KB;
-
-  PageTableEntry4KB = (X64_PAGE_TABLE_ENTRY_4K *) (PageTable + gPageNum2M * EFI_PAGE_SIZE_4K);
-  //
-  // Fill in the Page Table entries
-  // Mark 0~4K as not present
-  //
-  PageTableEntry4KB->Bits.Present = 0;
-
-  return ;
-}
-
-VOID
-X64Create4KPageTables (
-  UINT8                       *PageTable
-  )
-/*++
-Routine Description:
-  Create 4K-Page-Table for the low 2M memory.
-  This will change the previously created 2M-Page-Table-Entry.
---*/
-{
-  UINT64                                        PageAddress;
-  UINTN                                         PTEIndex;
-  X64_PAGE_DIRECTORY_ENTRY_4K                   *PageDirectoryEntry4KB;
-  X64_PAGE_TABLE_ENTRY_4K                       *PageTableEntry4KB;
-
-  //
-  //  Page Table structure 4 level 4K.
-  //
-  //                   PageMapLevel4Entry        : bits 47-39
-  //                   PageDirectoryPointerEntry : bits 38-30
-  //  Page Table 4K  : PageDirectoryEntry4K      : bits 29-21
-  //                   PageTableEntry            : bits 20-12
-  //
-
-  PageTableEntry4KB = (X64_PAGE_TABLE_ENTRY_4K *)(PageTable + gPageNum2M * EFI_PAGE_SIZE_4K);
-
-  PageDirectoryEntry4KB = (X64_PAGE_DIRECTORY_ENTRY_4K *) (PageTable + 2 * EFI_PAGE_SIZE_4K);
-  PageDirectoryEntry4KB->Uint64 = (UINT64)(UINTN)PageTableEntry4KB;
-  PageDirectoryEntry4KB->Bits.ReadWrite = 1;
-  PageDirectoryEntry4KB->Bits.Present = 1;
-  PageDirectoryEntry4KB->Bits.MustBeZero = 0;
-
-  for (PTEIndex = 0, PageAddress = 0; 
-       PTEIndex < ENTRY_NUM (EFI_MAX_ENTRY_BITS_NUM); 
-       PTEIndex++, PageTableEntry4KB++, PageAddress += EFI_PAGE_SIZE_4K
-      ) {
-    //
-    // Fill in the Page Table entries
-    //
-    PageTableEntry4KB->Uint64 = (UINT64)PageAddress;
-    PageTableEntry4KB->Bits.ReadWrite = 1;
-    PageTableEntry4KB->Bits.Present = 1;
-  }
-
-  return ;
-}
-
-VOID
-X64Create2MPageTables (
-  UINT8 *PageTable
-  )
-{
-  UINT64                                        PageAddress;
-  UINT8                                         *TempPageTable;
-  UINTN                                         PML4Index;
-  UINTN                                         PDPTEIndex;
-  UINTN                                         PDEIndex;
-  X64_PAGE_MAP_AND_DIRECTORY_POINTER_2MB_4K     *PageMapLevel4Entry;
-  X64_PAGE_MAP_AND_DIRECTORY_POINTER_2MB_4K     *PageDirectoryPointerEntry;
-  X64_PAGE_TABLE_ENTRY_2M                       *PageDirectoryEntry2MB;
-
-  TempPageTable = PageTable;
-  PageAddress   = 0;
-
-  //
-  //  Page Table structure 3 level 2MB.
-  //
-  //                   PageMapLevel4Entry        : bits 47-39
-  //                   PageDirectoryPointerEntry : bits 38-30
-  //  Page Table 2MB : PageDirectoryEntry2M      : bits 29-21
-  //
-
-  PageMapLevel4Entry = (X64_PAGE_MAP_AND_DIRECTORY_POINTER_2MB_4K *)TempPageTable;
-
-  for (PML4Index = 0; PML4Index < ENTRY_NUM (gPML4BitsNum); PML4Index++, PageMapLevel4Entry++) {
-    //
-    // Each PML4 entry points to a page of Page Directory Pointer entires.
-    //  
-    TempPageTable += EFI_PAGE_SIZE_4K;
-    PageDirectoryPointerEntry = (X64_PAGE_MAP_AND_DIRECTORY_POINTER_2MB_4K *)TempPageTable;
-
-    //
-    // Make a PML4 Entry
-    //
-    PageMapLevel4Entry->Uint64 = (UINT64)(UINTN)(TempPageTable);
-    PageMapLevel4Entry->Bits.ReadWrite = 1;
-    PageMapLevel4Entry->Bits.Present = 1;
-
-    for (PDPTEIndex = 0; PDPTEIndex < ENTRY_NUM (gPDPTEBitsNum); PDPTEIndex++, PageDirectoryPointerEntry++) {
-      //
-      // Each Directory Pointer entries points to a page of Page Directory entires.
-      //       
-      TempPageTable += EFI_PAGE_SIZE_4K;
-      PageDirectoryEntry2MB = (X64_PAGE_TABLE_ENTRY_2M *)TempPageTable;
-
-      //
-      // Fill in a Page Directory Pointer Entries
-      //
-      PageDirectoryPointerEntry->Uint64 = (UINT64)(UINTN)(TempPageTable);
-      PageDirectoryPointerEntry->Bits.ReadWrite = 1;
-      PageDirectoryPointerEntry->Bits.Present = 1;
-
-      for (PDEIndex = 0; PDEIndex < ENTRY_NUM (gPDEBitsNum); PDEIndex++, PageDirectoryEntry2MB++) {
-        //
-        // Fill in the Page Directory entries
-        //
-        PageDirectoryEntry2MB->Uint64 = (UINT64)PageAddress;
-        PageDirectoryEntry2MB->Bits.ReadWrite = 1;
-        PageDirectoryEntry2MB->Bits.Present = 1;
-        PageDirectoryEntry2MB->Bits.MustBe1 = 1;
-
-        PageAddress += EFI_PAGE_SIZE_2M;
-      }
-    }
-  }
-
-  return ;
-}
-
-VOID *
-PreparePageTable (
-  VOID  *PageNumberTop,
-  UINT8 SizeOfMemorySpace
-  )
-/*++
-Description:
-  Generate pagetable below PageNumberTop, 
-  and return the bottom address of pagetable for putting other things later.
---*/
-{
-  VOID  *PageNumberBase;
-
-  SizeOfMemorySpace -= EFI_2M_PAGE_BITS_NUM;
-  gPDEBitsNum        = (UINT8) MIN (SizeOfMemorySpace, EFI_MAX_ENTRY_BITS_NUM);
-  SizeOfMemorySpace  = (UINT8) (SizeOfMemorySpace - gPDEBitsNum);
-  gPDPTEBitsNum      = (UINT8) MIN (SizeOfMemorySpace, EFI_MAX_ENTRY_BITS_NUM);
-  SizeOfMemorySpace  = (UINT8) (SizeOfMemorySpace - gPDPTEBitsNum);
-  gPML4BitsNum       = SizeOfMemorySpace;
-  if (gPML4BitsNum > EFI_MAX_ENTRY_BITS_NUM) {
-    return NULL;
-  }
-
-  //
-  // Suppose we have:
-  // 2MPage:
-  //   Entry:       PML4   ->     PDPTE     ->     PDE    -> Page
-  //   EntryNum:     a              b               c
-  // then
-  //   Occupy4KPage: 1              a              a*b
-  // 
-  // 2M 4KPage:
-  //   Entry:       PTE    ->     Page
-  //   EntryNum:    512
-  // then
-  //   Occupy4KPage: 1
-  //   
-
-  gPageNum2M = 1 + ENTRY_NUM (gPML4BitsNum) + ENTRY_NUM (gPML4BitsNum + gPDPTEBitsNum);
-  gPageNum4K = 1;
-
-
-  PageNumberBase = (VOID *)((UINTN)PageNumberTop - (gPageNum2M + gPageNum4K) * EFI_PAGE_SIZE_4K);
-  ZeroMem (PageNumberBase, (gPageNum2M + gPageNum4K) * EFI_PAGE_SIZE_4K);
-
-  X64Create2MPageTables (PageNumberBase);
-  X64Create4KPageTables (PageNumberBase);
-  //
-  // Not enable NULL Pointer Protection if using INTx call
-  //
-//  EnableNullPointerProtection (PageNumberBase);
-
-  return PageNumberBase;
-}